JY/T 0194-2011Leaf structure model (English PDF)

3.1 Naming rules

The model name of the product is JY 0026-1991.

3.2 Nomenclature

The leaf structure model is named.

SM - YGZ - P - 400

Product length, 400mm Product feature code, profile Product name Pinyin prefix, "leaf structure" Product model classification code, biological model Model example.

SM-YGZ-P-400 stands for biological model, leaf structure model, section, 400mm in length.

4.1 Use environmental conditions

Temperature. -10 °C ~ 40 °C, relative humidity. not more than 90%.

4.2 Anatomy

4.2.1 General requirements

4.2.1.1 The product shall use broad bean leaves as a reference material to show the structure of dicotyledonous plant leaves. The model is 400mm ± 30mm long and 140mm ± 10mm wide.

The height of the main vein of the leaf is 180mm ± 10mm.

4.2.1.2 Part of the leaves should be transected through the main vein, showing main veins, fine veins, upper and lower epidermis, fence tissue and sponge tissue on one side on one side, various sections should be used to show the connection between the main and lateral veins, as well as the longitudinal and lateral cross-sections of the main and lateral veins.

4.2.1.3 The morphology, structure and position of each cell shall be correct, and the color shall be different.

4.2.2 Specific requirements

4.2.2.1 Leaf veins. It should be located between the palisade tissue and the sponge tissue, and the connection between the main vein and the side veins should be appropriate. The xylem of the veins should be on the stem surface, the bast is on the dorsal stem surface, and there should be a layer in the main vein.

4.2.2.2 Epidermis. covering the upper and lower sides of the leaves, the epidermal cells are irregularly flat and covered with cuticle.

4.2.2.3 Fence organization. It is close to the upper epidermis and accounts for about 1/3 of the leaf thickness. The cells are cylindrical and arranged vertically and closely to the epidermis, Some cells were made longitudinal and transverse sections. The complete morphology of cells and the distribution, location, number and arrangement of chloroplasts on the cell profile should be correctly displayed point. Part of the longitudinal and transverse cells should show the nucleus.

4.2.2.4 Sponge tissue. it should show complete morphology and profile, with loosely arranged cells, large cell gaps, and a small amount of cells on the cell profile.

Chloroplast.

4.2.2.5 The shape, location and distribution of stomata shall be correctly displayed. The cross section of the guard cell should show the nucleus, chloroplast and its inner Chamber under the square hole.

4.2.2.6 The following parts of the model shall be affixed with name or number tags. upper epidermis, lower epidermis, fence tissue, sponge tissue, main vein, lateral vein, wood Part, phloem, formation layer, stomata.

4.3 Materials and processes

4.3.1 The model should be made of rigid PVC material, and glass fiber reinforced plastic (FRP) or fragile and deformable materials should not be used.

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 structures represented on the model should be accurate in position and modified naturally and correctly. Bonding and splicing should be firm.

4.3.4 The color of the structure of each part should be correct and clear, and the spraying transition should be natural and there should be no spillage.

4.3.5 The cut surface of the model shall be flat and not deformed.

4.3.6 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.

5.1 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.

6.1 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 methods

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 This standard 4.2 (except for slight defects in the color and spray transition or slight inaccuracy in the spray transition), 4.3.1, 4.3.2 and 4.3.5 is the main performance indicator.

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.