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JY/T 0191-2011: (Root longitudinal model)
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JY/T 0191-2011
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Basic data | Standard ID | JY/T 0191-2011 (JY/T0191-2011) | | Description (Translated English) | (Root longitudinal model) | | Sector / Industry | Education Industry Standard (Recommended) | | Classification of Chinese Standard | Y51 | | Word Count Estimation | 6,648 | | Date of Issue | 2013-07-11 | | Date of Implementation | 2013-07-11 | | Older Standard (superseded by this standard) | JY 191-1985 | | Issuing agency(ies) | Ministry of Education of the People's Republic of China | JY/T 0191-2011: (Root longitudinal model)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Root longitudinal model)
ICS 03.180
Y51
Record number 46920-2014 JY
Education Industry Standard of the People's Republic of China
Replacing JY l91-1985
Root longitudinal model
Root vertical dissect model
2013- 07-11 released
2013-07-11 Implementation
Published by the Ministry of Education of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work_Part 1. Structure and Preparation of Standards"
This standard replaces JY 191-1985 "Technical Conditions for Root Profile Model". In addition to editorial changes, the main technical changes are as follows.
-Appearance size has increased allowable tolerances;
-Added the requirement that the main parts of the model should be affixed with name or number tags;
-Specifies the materials that should and should not be used for the model;
-Specify the limit of heavy metal content in the paint of the model.
Please note that some elements of this standard may involve patents. The issuer of this standard is not responsible for identifying these patents.
This standard was proposed by the National Technical Committee for Standardization of Teaching Instruments (SAC/TC125).
This standard is under the jurisdiction of the National Technical Committee for Standardization of Teaching Instruments (SAC/TC125).
The main drafters of this standard are. Zhejiang Educational Technology Center, Ministry of Education Teaching Instrument Research Institute, Wenzhou Wuxing Industrial Co., Ltd.
The main drafters of this standard. Ren Weide, Song Meilun, Huang Ruiqing.
This standard replaces JY 191-1985.
The standard JY 191 was first issued in 1985.
Root longitudinal model
1 Scope
This standard specifies the nomenclature, requirements, test methods, inspection rules and signs, packaging, transportation, and storage of the root profile model.
This standard applies to the plant root longitudinal profile model for biology teaching.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 21746-2008 General requirements for safety requirements of teaching instruments and equipment
JY 0001-2003 General quality requirements for teaching instruments and equipment products
JY 0002 Inspection rules for teaching instruments and equipment products
JY 0026-1991 teaching instrument and teaching equipment product model naming method
JY 0213-1994 Teaching mechanical, thermal instrument transportation, storage environmental conditions and test methods
3 Naming
3.1 Naming rules
The model name of the product is JY 0026-1991.
3.2 Nomenclature
The root profile model is named.
SM-GZP-D-520
Product height, 520mm
Product feature code, monocotyledon
Product name Pinyin prefix, "root longitudinal profile"
Product model classification code, biological model
Model example.
SM-GZP-D-520 represents a biological model, a root profile model, a monocotyledon, and a height of 520mm.
4 Requirements
4.1 Use environmental conditions
Temperature. -10 ℃ ～ 40 ℃, relative humidity. not more than 90%.
4.2 Anatomy
4.2.1 General requirements
4.2.1.1 The product should use the root tip of monocotyledonous corn as a reference material, showing the anatomical structure of the root tip. Model height is not less than 520mm, put
On the stand.
4.2.1.2 Make different longitudinal sections in the middle of the root tip to highlight the vascular column, showing the root crown, meristematic zone (growth point), elongation zone, mature zone (root
Hair area) and the original formation layer.
4.2.1.3 The maturity zone shall be layered (stepped) cross-section.
4.2.1.4 The characteristics of various types of cells should be obvious and correct, and the transition should be natural. Allows slightly imperfect colors or spray transitions or
Location is slight.
4.2.2 Specific requirements
4.2.2.1 Root canopy. The height is about 13% of the height of the model, and it looks like a cap. Cells are large, irregularly shaped and loosely arranged, with worn surfaces
shape.
4.2.2.2 Meristematic area. The height is about 19% of the model height. It should show the characteristics of square cells, large nuclei, small volume, and close arrangement without gaps.
4.2.2.3 Elongation zone. The height is about 35% of the model height. It should be shown that the cells develop from square, rectangular, and long rectangles. And shows young ducts
Continuous relationship with mature ducts.
4.2.2.4 Mature area. Shows longitudinal and transverse sections of the epidermis, cortex, and vascular columns.
4.2.2.4.1 Epidermis. Shows the outermost layer of thin-walled cells and the root hairs protruding from the outer wall of the cells. Root hair should be no less than 30, and
The developmental sequence is shown from short to long, at least two of which are longitudinally cross-sectioned and show nucleoli.
4.2.2.4.2 Cortex. Inside the epidermis, outer cortical cells (one to two layers), cortical thin-walled cells (multilayer, loosely arranged) and
Endothelial cells (one layer, neatly arranged).
4.2.2.4.3 Vascular columns. The longitudinal and cross-sectional views of ring-shaped conduits, threaded conduits and perforated conduits, and screens shall be shown on the longitudinal section. three
The thick-walled part of the catheter is shown in red. The xylem and phloem in the vascular column on the cross section should be arranged alternately.
4.2.2.5 The following parts of the model shall be affixed with name or number tags. root canopy, meristematic zone, elongation zone, mature zone, epidermis, outer cortex, endothelial layer,
Vascular columns, catheters.
4.3 Materials and processes
4.3.1 The model shall be made of rigid PVC material, and the root hair may be made of soft plastic. Glass fiber reinforced plastic (FRP) or
Fragile and deformable materials.
4.3.2 The content of heavy metals in the coating of the model shall conform to GB 5.2.5.4 of GB 21746-2008.
4.3.3 The cross section of the model should be neat, the structures indicated should be accurate, the decoration should be natural and correct, and the bonding and splicing should be firm.
4.3.4 The spray color transition in each area should be natural and there should be no spillage.
4.3.5 The product shall also comply with JY 0001-2003 sections 5.2, 6.9, 6.12, 6.27, 7.4.3, 7.7 and 9.1 to 9.6.
4.4 Environmental test
4.4.1 The product shall be tested for temperature, humidity, and free drop in accordance with JY 0213-1994 Section 3.1, and shall be subjected to a drop test in an unpackaged state.
4.4.2 The drop height of the drop test in the non-packaging state is 1m. The drop surface shall be the largest surface of the model outline. After the test, it shall not be broken or cracked.
If there is a stand, it should not be included.
5 Test method
5.1 Relevant dimensions
Measured with a steel ruler with a division value of 1 mm.
5.2 Anatomy, appearance and workmanship
Sensory test.
5.3 Environmental test
5.3.1 Temperature, humidity and free fall test According to JY 0213-1994 Section 4.1, 4.2, 4.6.
5.3.2 Drop test in unpacked state. Lay a wooden board with a thickness of 20mm ± 3mm on the cement floor, and keep the board rigidly connected to the cement floor
touch. During the test, the model's falling surface is downward, and it will fall freely from a height of 1m. Once tested, it shall meet 4.4.2.
6 Inspection rules
6.1 Inspection classification
The inspection of this product is divided into factory inspection, type inspection and quality supervision inspection.
6.2 Inspection items
The inspection items and methods of factory inspection and type inspection are shown in Table 1.
Table 1 Inspection items and methods of factory inspection and type inspection
Item No. Inspection Item Standard Provisions Factory Inspection Type Inspection
1 General requirements 4.2.1 ● ●
2 Specific requirements 4.2.2 ● ●
3 Materials and processes 4.3 ● ●
4 Environmental test 4.4-●
Note. “●” in the table means all inspection items, and “-” means no inspection items.
6.3 Sampling method
6.3.1 The factory inspection shall be batched according to the natural batch of delivery, and the type inspection shall be batched according to the stock array.
6.3.2 During the factory inspection, all the inspection items shall be inspected first, and the sampling inspection items shall be inspected among the qualified products.
6.3.3 The samples for type inspection shall be taken from the products that passed the factory inspection.
6.3.4 The sampling methods for factory inspection and type inspection shall be in accordance with JY 0002.
6.4 Non-conformance determination
6.4.1 The judgment of sampling inspection shall be in accordance with JY 0002.
6.4.2 The failure criterion of a single sample shall be in accordance with JY 0002.
6.4.3 The factory inspection shall be determined according to the unqualified criterion of a single sample.
6.4.4 The main performance indicators of this standard are 4.2, 4.3.1, 4.3.2 and 4.3.3.
6.5 Review rules
6.5.1 Unqualified products can be submitted for inspection again after rework.
6.5.2 If the cause of the batch failure is a sampling inspection item, the item shall be changed to a full inspection during the re-inspection.
6.6 Quality supervision inspection
Quality supervision and inspection shall be in accordance with JY 0002.
7 Marking, packaging, transportation, storage
The rest are according to chapters 11 and 12 of JY 0001-2003.
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