经销艺术漆 前景广阔

艺术漆是一种新型的油漆,它可通过不同的模具和滚花机,在墙面上粉刷彩色图案。产品特点     

积极发展订单农业努力做大香猪产业

从江香猪是我国稀有的优良地方猪种，它以其“体型矮小、肉质香嫩、基因纯合、纯净无污染”等独特优点而享誉国内外。自１９８０年以来，全国各地许多科研单位和高等院校对从江香猪进行了深入广泛的研究，一致认为：从江香猪的肉质品位高，营养价值丰富，１８种必需氨基酸含量齐全，特别是有利人体脑神经健康的谷氨酸含量较高，是有益于人们健康的时尚食品。同时，从江香猪的生理指标与人体相似。因此，从江香猪不仅是制作高档肉食制品的上乘原料，而且还是医学实验动物的理想猪种。１９８２年，从江香猪已被编入《贵州省地方畜禽品种志》；…     

大力推进硬件升级时风步入“高端智造”时代

<正>今年以来,时风集团主动迎接新常态,依托重点项目建设,打造产业发展新亮点,落实产业结构调整,转变新的增长方式,走进高端智慧制造新时代。时风集团总经理刘成强告诉记者:"加大重点项目建设是时风适应新常态、打造新亮点的迫切需要,是加快调结构、促转型的重要途径,是增强企业发展新活力的关键举措。"实际上,近年来,时风就按照"传统产业转型升级,战略新兴产业加快发展"的总体要求,从传统产业到战略新品,从工艺     

苗族传统体育项目“滚山珠”发展初探

随着经济社会的发展，很多优秀的少数民族传统体育项目面临着消失的危险，比如苗族独具特色的项目“滚山珠”。因此，笔者从探寻“滚山珠”一个项目的发展出发，来引发更多的人对民族传统体育的关注和热爱。以此来促进民族传统体育健康良性地发展。本文主要通过文献资料法、访谈法、田野调查法等方法，从“滚山珠”的基本情况、“滚山珠”的演变、“滚山珠”的发展（挖掘阶段、快速发展阶段、寂寞阶段、传承和保护阶段）来阐述“滚山珠”的发展概貌，进而从三方面：一加大经济的投入、二加强宣传的力度、三加快“滚山珠”的转型入手，做好“滚山珠”的传承与发展，从而使“滚山珠”转变成为纳雍县、毕节市乃至贵州省的文化品牌，为贵州地方经济建设服务。     

Cloning of Inhibin-α Gene and its mRNA Expression Pattern in the Ovary of Congjiang Xiang Pig

To reveal the relationship between inhibin-α(INHA) gene and the reproductive traits of Congjiang Xiang pig, INHA gene was cloned and sequenced taking the genomic DNA of Congjiang Xiang pigs as templates by polymerase chain reaction(PCR) method.The polymorphisms of INHA gene were tested in Congjiang Xiang pig populations with high-litter size and low-litter size using allele-specific PCR(AS-PCR) method.The expression profile of INHA gene in ovaries was detected from Congjiang Xiang pigs with high-litter yiled or low-litter yiled by Real-time PCR method.The complete coding region of INHA gene was 1095 bp in length, which coded for 364 amino acid residues.Compared with the known sequence, two candidate sites, G359A and A373G, were found out from exon 2 region of INHA gene in Congjiang Xiang pig.After investigation for the two sites in a large population, the frequency of alleles between two populations was not significant and without obvious relativity with the litter yiled of Congjiang Xiang pig.However, the INHA mRNA level in the ovary of Congjiang Xiang pig with high-litter yiled was higher than that with low-litter yiled.It suggested that INHA gene was much conserved, INHA gene expression level might be concerned for the regulation of ovary growth and follicle development in Congjiang Xiang pig breed.     

滚齿芯轴加工工艺的改进

内孔为花键孔的齿轮用滚齿芯轴,以其锥面及带有螺纹端的中心孔与滚齿机相联接来定位,原工艺的花轴为整体淬火,并以其中心孔为基准磨削锥面及外圆,而螺纹部分未进行精加工。由于热处理过程中,螺纹部分曲线弯曲,造成与花     

飞轮滚键的原因及预防

小型柴油机的飞轮与曲轴之间是依靠两者配合锥面的静摩擦力来紧密联接和传递动力的，飞轮平键只起定位作用。当飞轮与曲轴配合松动、飞轮滚键后，平键被滚去棱角而变形，曲轴和飞轮上的键槽槽口磨宽，甚至有金属剥落，这时柴油机运转中会     

拖拉机齿轮与花键轴干切技术应用研究

针对传统的滚齿加工中需要使用冷却液的弊端,提出了一种滚齿干切加工技术。通过对国内外干切技术发展状况进行调研,选择了合适的加工机床和刀具,对典型的齿轮和花键轴零件进行干切工艺试验,探索掌握干切加工适宜的工艺参数。研究结果表明,低温冷风干切加工技术不仅能满足实际使用要求,还解决了切削液带来的环境污染、资源消耗的难题。