A Simple Measuring Method of Fish Scale Strength

A measurement method and scale technology, which are applied in the field of simple measurement of the strength of fish scales, and can solve problems such as inapplicability of fish scales.

Active Publication Date: 2016-05-18
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple method for measuring the strength of fish scales, which solves the problem that the scales are very small and thin, and the clamps of conventional instruments cannot be clamped at all, so in the conventional strength test, both ends of the object are clamped and then pulled. The cracking method is not suitable for the problem of fish scale strength measurement

Method used

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  • A Simple Measuring Method of Fish Scale Strength

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: First, the fixed frame 1 is placed on a flat test bench, and then the hook 2 is fixed on the top of the fixed frame 1, and the height between the hook 2 and the experimental table is kept at 40 cm; two cotton threads 3 with a length of 20 cm are taken. Insert two embroidery needles respectively for later use; take a round plastic cup 5, and pierce a small hole near the upper edge of the plastic cup 5, and then pierce a small hole at a symmetrical point in diameter, and tie the two ends of the 8cm-long rope to the two small holes. Fix it in the hole as a hanging rope; measure the treatment of the front scale 4, take carp with a body length of 8-14 cm as the research object, and the scale 4 is collected from the scales directly below the left dorsal fin and the row above the lateral line scales. Take the scale 4 and use it. Wipe and clean with clean water and silk cloth to remove the tissue adhering to the surface of the scale 4, then place the scale 4 on a g...

Embodiment 2

[0030] Embodiment 2: Determination of the strength of the paper sheet; since the scales 4 of different fish and even the same fish have differences in shape and strength, it is inconvenient to verify the accuracy of the device. In order to measure the accuracy of this device more accurately, select conventional high-quality A4 printing paper for measurement, first cut the measurement paper into a square with a side length of 1cm to simulate the scale 4, and measure the small strength of paper. The strength of 12 small pieces of paper was measured in total (Table 2), the average strength was 304.42g (or 2.98N), the standard error was 5.45g (or 0.05N), and the standard error was 1.68% of the mean value.

[0031] Table 2 The strength of conventional A4 printing paper cut into square sheets with a side length of 1cm

[0032] Assay number

[0033] As can be seen from the test results in Table 2, the measurement results of the inventive method are very accurate.

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Abstract

The invention discloses a simple strength measurement method for a fish scale. The simple strength measurement method comprises the following steps: arranging a fixed frame, wherein a hanging hook is hung at the top end of the fixed frame; cleaning and air-drying the fish scale, and finding and marking a scale focus; running through the scale focus with two cotton threads, and tying two ends of one cotton thread on the hanging hook, so as to hang the fish scale on the fixed frame; fixing two ends of the other cotton thread to a cup, and hanging the cup below the fish scale; naturally and vertically connecting the cotton threads, the fish scale and the cup by virtue of gravity, and continuously adding dry fine sand into the cup by little and little until the fish scale is completely torn by virtue of gravity of the fine sand; weighing the total weight of the cup and the fine sand in the cup, and multiplying a numerical value of the total weight with a gravitational constant, so as to obtain the strength of the fish scale. The simple strength measurement method for the fish scale has the beneficial effects that a clamp is not required, furthermore, a uniform measurement standard is determined, and the strength of the fish scale can be accurately measured.

Description

technical field [0001] The invention belongs to the field of strength measurement, in particular to a simple method for measuring the strength of fish scales. Background technique [0002] Scale is the tissue covering the body surface of most fishes, which has important biological significance. The scales cover the body surface of the fish, providing the first protective barrier for the fish and reducing friction when swimming. At the same time, the scales also have other functions such as sensation. Although scholars have realized the importance of scales, there is still a lack of research on scales. The strength of the scales has an important impact on the anti-predation and disease resistance of fish. Evolutionarily, differences in scale strength may reveal adaptations to specific environments. For the comparison of scale strength between species, research conclusions such as developmental differences and nutritional stress can also be drawn. At present, evaluation s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/14
Inventor 朱挺兵张堂林杨德国
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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