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猪精液保存的一些方法 被引量:1
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作者 李和进 冯佩平 《猪业科学》 2020年第1期140-140,共1页
猪精液的保存对精液的质量维持至关重要,目前猪液态精液的保存还是主流,但在国际贸易中冻精是较受欢迎的,而近些年猪冻精发展迅速,其中的保存方法也有了一些新的尝试。1冻精的保存,猪精子对低温比较敏感,单次用量大,而常温保存也能满足... 猪精液的保存对精液的质量维持至关重要,目前猪液态精液的保存还是主流,但在国际贸易中冻精是较受欢迎的,而近些年猪冻精发展迅速,其中的保存方法也有了一些新的尝试。1冻精的保存,猪精子对低温比较敏感,单次用量大,而常温保存也能满足用量需求,随着牛等冻精的发展,对优良品种的需求、跨国运输的成本以及生物安全的内在要求,使得猪冻精得到一定发展。 展开更多
关键词 精液保存 常温保存 冻精 保存方法 猪精液 猪精子 优良品种 国际贸易
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A new kind of resin-based wet friction material:Non-woven fabrics with isotropic fiber networks as preforms 被引量:2
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作者 Yewei FU Le ZHOU +3 位作者 Tao YIN Zhongyao LUO hejin li Lehua QI 《Friction》 SCIE EI CAS CSCD 2021年第1期92-103,共12页
As an alternative to short fibers,non-woven fabrics(NWFs)were made using different types of long fibers to optimize the performance of paper-based friction materials and their technology.In this investigation,the fill... As an alternative to short fibers,non-woven fabrics(NWFs)were made using different types of long fibers to optimize the performance of paper-based friction materials and their technology.In this investigation,the fillers and resin were impregnated into these NWFs to prepare three kinds of wet friction material.The tribological,mechanical,and thermal properties of the new wet friction material were studied.The results indicate that the dynamic friction coefficient of the new friction material is approximately 0.12 and the static friction coefficient is approximately 0.15;the better wear rate is 0.81334×10^(-14)m^(3)·(N·m)^(-1).In addition,the temperature for 10%mass loss yielded 100°C enhancement and the tensile strength was improved by 200%,compared to previously reported values.Most importantly,the advantages include a simple preparation flow,low cost,and resource conservation.This is a promising approach for the future development of paper-based friction materials. 展开更多
关键词 non-woven fabric wet friction material continued friction film green manufacture speed
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