GET https://dev.normadoc.fr/_partial/products/cross-sell?limit=2&products=%5B8492%5D&template=%40SyliusShop%2FProduct%2FsimilarList.html.twig

Response
200 OK
IP
216.73.216.149
Profiled on
Token
62860a

Forms

  • sylius_add_to_cart
    • cartItem
    • _token

sylius_add_to_cart

Form type: 
"Sylius\Bundle\CoreBundle\Form\Type\Order\AddToCartType"

Errors

This form has no errors.

Default Data

Property Value
Model Format same as normalized format
Normalized Format 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113953
  -cart: App\Entity\Order\Order {#13332 …}
  -cartItem: App\Entity\Order\OrderItem {#113941
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113965 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113966 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8101
      #id: 2278
      #code: "IEEE00000555PDF"
      #product: App\Entity\Product\Product {#7309
        #id: 8492
        #code: "IEEE00000555"
        #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
        #variants: Doctrine\ORM\PersistentCollection {#7745 …}
        #options: Doctrine\ORM\PersistentCollection {#7917
          #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7309}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7901 …}
        #createdAt: DateTime @1751037463 {#7274
          date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754606304 {#7322
          date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7923 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7922
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7309}
            #id: 28977
            #name: "IEEE 356:1974 (R1981)"
            #slug: "ieee-356-1974-r1981-ieee00000555-240144"
            #description: """
              New IEEE Standard - Inactive-Withdrawn.<br />\n
              Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
              \t\t\t\t<br />\n
              The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
              When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
              The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
              In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
              SI units are employed throughout this guide.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
            -notes: "Inactive-Withdrawn"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
        #channels: Doctrine\ORM\PersistentCollection {#7629 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7646 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @130546800 {#7318
          date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: DateTime @347151600 {#7316
          date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
        }
        -canceledAt: DateTime @811116000 {#7315
          date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
        }
        -edition: null
        -coreDocument: "356"
        -bookCollection: ""
        -pageCount: 36
        -documents: Doctrine\ORM\PersistentCollection {#7466 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8317 …}
      #position: 0
      #createdAt: DateTime @1751041116 {#7283
        date: 2025-06-27 18:18:36.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611955 {#8118
        date: 2025-08-19 15:59:15.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8261 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93335
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8101}
          #id: 2296
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8133 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8295 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8292 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8100
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-4367-5"
      -ean: "9780738143675"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/b4EWJ4"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8129 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8121 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
View Format same as normalized format

Submitted Data

This form was not submitted.

Passed Options

Option Passed Value Resolved Value
data 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113953
  -cart: App\Entity\Order\Order {#13332 …}
  -cartItem: App\Entity\Order\OrderItem {#113941
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113965 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113966 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8101
      #id: 2278
      #code: "IEEE00000555PDF"
      #product: App\Entity\Product\Product {#7309
        #id: 8492
        #code: "IEEE00000555"
        #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
        #variants: Doctrine\ORM\PersistentCollection {#7745 …}
        #options: Doctrine\ORM\PersistentCollection {#7917
          #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7309}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7901 …}
        #createdAt: DateTime @1751037463 {#7274
          date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754606304 {#7322
          date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7923 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7922
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7309}
            #id: 28977
            #name: "IEEE 356:1974 (R1981)"
            #slug: "ieee-356-1974-r1981-ieee00000555-240144"
            #description: """
              New IEEE Standard - Inactive-Withdrawn.<br />\n
              Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
              \t\t\t\t<br />\n
              The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
              When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
              The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
              In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
              SI units are employed throughout this guide.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
            -notes: "Inactive-Withdrawn"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
        #channels: Doctrine\ORM\PersistentCollection {#7629 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7646 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @130546800 {#7318
          date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: DateTime @347151600 {#7316
          date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
        }
        -canceledAt: DateTime @811116000 {#7315
          date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
        }
        -edition: null
        -coreDocument: "356"
        -bookCollection: ""
        -pageCount: 36
        -documents: Doctrine\ORM\PersistentCollection {#7466 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8317 …}
      #position: 0
      #createdAt: DateTime @1751041116 {#7283
        date: 2025-06-27 18:18:36.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611955 {#8118
        date: 2025-08-19 15:59:15.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8261 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93335
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8101}
          #id: 2296
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8133 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8295 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8292 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8100
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-4367-5"
      -ean: "9780738143675"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/b4EWJ4"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8129 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8121 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
 same as passed value
product 
App\Entity\Product\Product {#7309
  #id: 8492
  #code: "IEEE00000555"
  #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
  #variants: Doctrine\ORM\PersistentCollection {#7745 …}
  #options: Doctrine\ORM\PersistentCollection {#7917
    #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
    #initialized: true
    -snapshot: [ …4]
    -owner: App\Entity\Product\Product {#7309}
    -association: [ …21]
    -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
    -backRefFieldName: null
    -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7901 …}
  #createdAt: DateTime @1751037463 {#7274
    date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1754606304 {#7322
    date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
  }
  #enabled: true
  #translations: Doctrine\ORM\PersistentCollection {#7923 …}
  #translationsCache: [
    "en_US" => App\Entity\Product\ProductTranslation {#7922
      #locale: "en_US"
      #translatable: App\Entity\Product\Product {#7309}
      #id: 28977
      #name: "IEEE 356:1974 (R1981)"
      #slug: "ieee-356-1974-r1981-ieee00000555-240144"
      #description: """
        New IEEE Standard - Inactive-Withdrawn.<br />\n
        Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
        \t\t\t\t<br />\n
        The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
        When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
        The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
        In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
        SI units are employed throughout this guide.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
      -notes: "Inactive-Withdrawn"
    }
  ]
  #currentLocale: "en_US"
  #currentTranslation: null
  #fallbackLocale: "en_US"
  #variantSelectionMethod: "match"
  #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
  #channels: Doctrine\ORM\PersistentCollection {#7629 …}
  #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
  #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
  #averageRating: 0.0
  #images: Doctrine\ORM\PersistentCollection {#7646 …}
  -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
  -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
  -apiLastModifiedAt: DateTime @1754517600 {#7317
    date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
  }
  -lastUpdatedAt: DateTime @1578006000 {#7292
    date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
  }
  -author: ""
  -publishedAt: DateTime @130546800 {#7318
    date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
  }
  -releasedAt: null
  -confirmedAt: DateTime @347151600 {#7316
    date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
  }
  -canceledAt: DateTime @811116000 {#7315
    date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
  }
  -edition: null
  -coreDocument: "356"
  -bookCollection: ""
  -pageCount: 36
  -documents: Doctrine\ORM\PersistentCollection {#7466 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
}
 same as passed value

Resolved Options

Option Value
action 
""
allow_extra_fields 
false
allow_file_upload 
false
attr 
[]
attr_translation_parameters 
[]
auto_initialize 
true
block_name 
null
block_prefix 
null
by_reference 
true
compound 
true
constraints 
[]
csrf_field_name 
"_token"
csrf_message 
"The CSRF token is invalid. Please try to resubmit the form."
csrf_protection 
true
csrf_token_id 
null
csrf_token_manager 
Symfony\Component\Security\Csrf\CsrfTokenManager {#113973
  -generator: Symfony\Component\Security\Csrf\TokenGenerator\UriSafeTokenGenerator {#113974 …}
  -storage: Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage {#113975 …}
  -namespace: Closure() {#113977 …}
}
data 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113953
  -cart: App\Entity\Order\Order {#13332 …}
  -cartItem: App\Entity\Order\OrderItem {#113941
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113965 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113966 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8101
      #id: 2278
      #code: "IEEE00000555PDF"
      #product: App\Entity\Product\Product {#7309
        #id: 8492
        #code: "IEEE00000555"
        #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
        #variants: Doctrine\ORM\PersistentCollection {#7745 …}
        #options: Doctrine\ORM\PersistentCollection {#7917
          #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7309}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7901 …}
        #createdAt: DateTime @1751037463 {#7274
          date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754606304 {#7322
          date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7923 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7922
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7309}
            #id: 28977
            #name: "IEEE 356:1974 (R1981)"
            #slug: "ieee-356-1974-r1981-ieee00000555-240144"
            #description: """
              New IEEE Standard - Inactive-Withdrawn.<br />\n
              Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
              \t\t\t\t<br />\n
              The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
              When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
              The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
              In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
              SI units are employed throughout this guide.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
            -notes: "Inactive-Withdrawn"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
        #channels: Doctrine\ORM\PersistentCollection {#7629 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7646 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @130546800 {#7318
          date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: DateTime @347151600 {#7316
          date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
        }
        -canceledAt: DateTime @811116000 {#7315
          date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
        }
        -edition: null
        -coreDocument: "356"
        -bookCollection: ""
        -pageCount: 36
        -documents: Doctrine\ORM\PersistentCollection {#7466 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8317 …}
      #position: 0
      #createdAt: DateTime @1751041116 {#7283
        date: 2025-06-27 18:18:36.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611955 {#8118
        date: 2025-08-19 15:59:15.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8261 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93335
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8101}
          #id: 2296
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8133 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8295 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8292 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8100
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-4367-5"
      -ean: "9780738143675"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/b4EWJ4"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8129 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8121 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
data_class 
"Sylius\Bundle\OrderBundle\Controller\AddToCartCommand"
disabled 
false
empty_data 
Closure(FormInterface $form) {#114000
  class: "Symfony\Component\Form\Extension\Core\Type\FormType"
  use: {
    $class: "Sylius\Bundle\OrderBundle\Controller\AddToCartCommand"
  }
}
error_bubbling 
true
error_mapping 
[]
extra_fields_message 
"This form should not contain extra fields."
form_attr 
false
getter 
null
help 
null
help_attr 
[]
help_html 
false
help_translation_parameters 
[]
inherit_data 
false
invalid_message 
"This value is not valid."
invalid_message_parameters 
[]
is_empty_callback 
null
label 
null
label_attr 
[]
label_format 
null
label_html 
false
label_translation_parameters 
[]
mapped 
true
method 
"POST"
post_max_size_message 
"The uploaded file was too large. Please try to upload a smaller file."
priority 
0
product 
App\Entity\Product\Product {#7309
  #id: 8492
  #code: "IEEE00000555"
  #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
  #variants: Doctrine\ORM\PersistentCollection {#7745 …}
  #options: Doctrine\ORM\PersistentCollection {#7917
    #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
    #initialized: true
    -snapshot: [ …4]
    -owner: App\Entity\Product\Product {#7309}
    -association: [ …21]
    -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
    -backRefFieldName: null
    -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7901 …}
  #createdAt: DateTime @1751037463 {#7274
    date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1754606304 {#7322
    date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
  }
  #enabled: true
  #translations: Doctrine\ORM\PersistentCollection {#7923 …}
  #translationsCache: [
    "en_US" => App\Entity\Product\ProductTranslation {#7922
      #locale: "en_US"
      #translatable: App\Entity\Product\Product {#7309}
      #id: 28977
      #name: "IEEE 356:1974 (R1981)"
      #slug: "ieee-356-1974-r1981-ieee00000555-240144"
      #description: """
        New IEEE Standard - Inactive-Withdrawn.<br />\n
        Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
        \t\t\t\t<br />\n
        The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
        When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
        The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
        In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
        SI units are employed throughout this guide.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
      -notes: "Inactive-Withdrawn"
    }
  ]
  #currentLocale: "en_US"
  #currentTranslation: null
  #fallbackLocale: "en_US"
  #variantSelectionMethod: "match"
  #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
  #channels: Doctrine\ORM\PersistentCollection {#7629 …}
  #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
  #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
  #averageRating: 0.0
  #images: Doctrine\ORM\PersistentCollection {#7646 …}
  -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
  -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
  -apiLastModifiedAt: DateTime @1754517600 {#7317
    date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
  }
  -lastUpdatedAt: DateTime @1578006000 {#7292
    date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
  }
  -author: ""
  -publishedAt: DateTime @130546800 {#7318
    date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
  }
  -releasedAt: null
  -confirmedAt: DateTime @347151600 {#7316
    date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
  }
  -canceledAt: DateTime @811116000 {#7315
    date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
  }
  -edition: null
  -coreDocument: "356"
  -bookCollection: ""
  -pageCount: 36
  -documents: Doctrine\ORM\PersistentCollection {#7466 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
}
property_path 
null
required 
true
row_attr 
[]
setter 
null
translation_domain 
null
trim 
true
upload_max_size_message 
Closure() {#114002
  class: "Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension"
  use: {
    $translator: Symfony\Component\Translation\DataCollectorTranslator {#2251 …}
    $message: Closure() {#114001 …}
    $translationDomain: "validators"
  }
}
validation_groups 
[
  "sylius"
]

View Vars

Variable Value
action 
""
attr 
[]
attr_translation_parameters 
[]
block_prefixes 
[
  "form"
  "sylius_add_to_cart"
  "_sylius_add_to_cart"
]
cache_key 
"_sylius_add_to_cart_sylius_add_to_cart"
compound 
true
data 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113953
  -cart: App\Entity\Order\Order {#13332 …}
  -cartItem: App\Entity\Order\OrderItem {#113941
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113965 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113966 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8101
      #id: 2278
      #code: "IEEE00000555PDF"
      #product: App\Entity\Product\Product {#7309
        #id: 8492
        #code: "IEEE00000555"
        #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
        #variants: Doctrine\ORM\PersistentCollection {#7745 …}
        #options: Doctrine\ORM\PersistentCollection {#7917
          #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7309}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7901 …}
        #createdAt: DateTime @1751037463 {#7274
          date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754606304 {#7322
          date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7923 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7922
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7309}
            #id: 28977
            #name: "IEEE 356:1974 (R1981)"
            #slug: "ieee-356-1974-r1981-ieee00000555-240144"
            #description: """
              New IEEE Standard - Inactive-Withdrawn.<br />\n
              Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
              \t\t\t\t<br />\n
              The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
              When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
              The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
              In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
              SI units are employed throughout this guide.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
            -notes: "Inactive-Withdrawn"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
        #channels: Doctrine\ORM\PersistentCollection {#7629 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7646 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @130546800 {#7318
          date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: DateTime @347151600 {#7316
          date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
        }
        -canceledAt: DateTime @811116000 {#7315
          date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
        }
        -edition: null
        -coreDocument: "356"
        -bookCollection: ""
        -pageCount: 36
        -documents: Doctrine\ORM\PersistentCollection {#7466 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8317 …}
      #position: 0
      #createdAt: DateTime @1751041116 {#7283
        date: 2025-06-27 18:18:36.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611955 {#8118
        date: 2025-08-19 15:59:15.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8261 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93335
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8101}
          #id: 2296
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8133 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8295 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8292 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8100
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-4367-5"
      -ean: "9780738143675"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/b4EWJ4"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8129 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8121 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
disabled 
false
errors 
Symfony\Component\Form\FormErrorIterator {#114027
  -form: Symfony\Component\Form\Form {#114032 …}
  -errors: []
}
form 
Symfony\Component\Form\FormView {#114003 …5}
full_name 
"sylius_add_to_cart"
help 
null
help_attr 
[]
help_html 
false
help_translation_parameters 
[]
id 
"sylius_add_to_cart"
label 
null
label_attr 
[]
label_format 
null
label_html 
false
label_translation_parameters 
[]
method 
"POST"
multipart 
false
name 
"sylius_add_to_cart"
priority 
0
required 
true
row_attr 
[]
submitted 
false
translation_domain 
null
unique_block_prefix 
"_sylius_add_to_cart"
valid 
true
value 
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113953
  -cart: App\Entity\Order\Order {#13332 …}
  -cartItem: App\Entity\Order\OrderItem {#113941
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113965 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113966 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8101
      #id: 2278
      #code: "IEEE00000555PDF"
      #product: App\Entity\Product\Product {#7309
        #id: 8492
        #code: "IEEE00000555"
        #attributes: Doctrine\ORM\PersistentCollection {#7702 …}
        #variants: Doctrine\ORM\PersistentCollection {#7745 …}
        #options: Doctrine\ORM\PersistentCollection {#7917
          #collection: Doctrine\Common\Collections\ArrayCollection {#7919 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7309}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#223792 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7901 …}
        #createdAt: DateTime @1751037463 {#7274
          date: 2025-06-27 17:17:43.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754606304 {#7322
          date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7923 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7922
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7309}
            #id: 28977
            #name: "IEEE 356:1974 (R1981)"
            #slug: "ieee-356-1974-r1981-ieee00000555-240144"
            #description: """
              New IEEE Standard - Inactive-Withdrawn.<br />\n
              Withdrawn Standard. Withdrawn Date: Sep 15, 1995. This guide is the result of a survey of radio techniques employed for measuring the conductivity of the earth. Results are applicable to the design of communication channels that are influenced by the electrical characteristics of the earth. Emphasized are those techniques used at frequencies where the loss tangent is large. The techniques are classed broadly into those that make use of drill holes into the earth and those that do not. Also, a distinction is made between active and passive methods. Comments and critiques on the various techniques are included. Theoretical and practical details underlying some of the methods are given in the appendixes.<br />\n
              \t\t\t\t<br />\n
              The earth’s surface and the material below it affect both the point-to-point radio-wave propagation above and below the earth’s surface and the impedance of the antennas employed. For this reason the radio engineer is concerned with the macroscopic electrical properties of the earth. The properties of concern here are the conductivity and dielectric constant (or permittivity). We are also concerned with the horizontal stratification that may exist. However, we do not consider the effects of surface roughness in any detail. In what follows, the magnetic permeability of the earth is taken to be that of free space po = 4~ x lo-’ H/m. Exceptions, of course, occur in localized regions containing magnetic material for which the magnetic permeability p differs from p, (for example magnetite). The techniques for determining the electrical constants of the earth can be broadly divided into two categories: (1) those where drill-hole access into the earth does not exist (2) those where drill holes can be employed Where a drill hole can be used, the methods for single drill holes give localized values of the constants in the vicinity of the hole. Propagation between two holes can be used to deduce bulk values of the electrical constants of the earth between. To characterize a broad area of the earth’s surface would require data from an impractically large number of costly holes.<br />\n
              When interest is in the earth constants over a large area, such as coverage for broadcast stations, or where drill holes do not exist, techniques are employed which may be characterized as those which use surface probes.<br />\n
              The material in this guide is drawn from numerous articles and papers; most of it is available in the open literature. Useful summary texts are those of Keller and Frischknecht, Ref [l] and Grant and West, Ref [2]. Theoretical background is found in the prolific writings of Wait, including his book, Ref [3]. These sources treat for the most part surface-probing techniques, although one chapter of Keller and Frischknecht, Ref [l] treats some well-logging methods. Additional material is reported below with pertinent references (Ref [4]).<br />\n
              In Section 2, we discuss techniques using surface probes and in Section 3 we discuss methods suitable for drill holes (including well logging) and, additionally, a few miscellaneous specialized cases. In what follows we exclude discussion of those arrangements which employ gamma, x-ray radiation, or similar sources of radiation.<br />\n
              SI units are employed throughout this guide.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Guide for Radio Methods for Measuring Earth Conductivity"
            -notes: "Inactive-Withdrawn"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7535 …}
        #channels: Doctrine\ORM\PersistentCollection {#7629 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7308 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7614 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7646 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7422 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7420 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @130546800 {#7318
          date: 1974-02-20 00:00:00.0 Europe/Paris (+01:00)
        }
        -releasedAt: null
        -confirmedAt: DateTime @347151600 {#7316
          date: 1981-01-01 00:00:00.0 Europe/Paris (+01:00)
        }
        -canceledAt: DateTime @811116000 {#7315
          date: 1995-09-15 00:00:00.0 Europe/Paris (+02:00)
        }
        -edition: null
        -coreDocument: "356"
        -bookCollection: ""
        -pageCount: 36
        -documents: Doctrine\ORM\PersistentCollection {#7466 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7501 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8317 …}
      #position: 0
      #createdAt: DateTime @1751041116 {#7283
        date: 2025-06-27 18:18:36.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611955 {#8118
        date: 2025-08-19 15:59:15.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8261 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93335
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8101}
          #id: 2296
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8133 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8295 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8292 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8100
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-4367-5"
      -ean: "9780738143675"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/b4EWJ4"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8129 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8121 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}