精子减少

Results: The incidence of cryptorchidism of male offsprings in group C and D was 10.8% and 63.5% respectively. The organ/weight of cryptorchid testis and epididymis significantly decreased compared with the control. Abnormal pathological and micro-structural alternations of seminiferous epithelium and sertoli cells were also observed.

结果：C、D组雄仔鼠隐睾发生率为10.8%和63.5%；隐睾睾丸、附睾的脏器系数显著减轻；睾丸生精上皮萎缩，生精细胞层减少甚至消失，曲精小管体积减小；同时附睾管腔中精子缺如。

Previous research suggests that men may have evolved tactics such as mate retention behaviors that reduce the risk of sperm competition and cuckoldry.

过去研究表明进化而来的男性配偶监控策略可以防止女性不贞，减少精子竞争失败的危险。

In order to find a way to lessen DNA problems of sperm, Dr. David Greening, a gynecologist and endocrinologist from Australia, studied the effects of daily ejaculations on damage rates.

为了找到一种方法，以减少问题的精子DNA的博士大卫绿化，一个医生和内分泌来自澳大利亚，研究了影响日常ejaculations损伤率。

The billions of tons of synthetic chemicals that have been heedlessly released into the environment have not only damaged the ecosystem and wildlife, but have also affected human endocrine systems, damaged infants in the womb, and reduced sperm counts.

数十亿吨的化学合成剂不计后果地进入了我们的环境里，不仅破坏了生态系统和野生动植物，而且影响人类内分泌系统，伤害母亲体内的胎儿，减少男人精子的数量。

Pharmacologist reported: male patients will have serious long-term use of nifedipine to reduce the number of sperm, thereby affecting their spouse's pregnancy rate.

据美国药理学家报导：男性病人长期服用硝苯地平会严重减少精子数目，从而影响其配偶的受孕率。

The porine is the polyembryony animal, many obtains the ovocyte from the porine ovary although but the maturity quite to be low; Because the ROSI technology is does not have to grow the mature sole round sperm cell to pour into directly completely in the ovicell nature, jumped over the spermatozoon in to pass through the physiology and the biochemistry, if the ovicell nature mature or the activation degree were insufficient, added the round immature sperm cell maturity quite inferior reason, very possibly Causes the ROSI micro fertilization defeat.

猪是多胎动物，从猪卵巢上获得的卵母细胞数量虽然较多，但成熟度比较低；由于ROSI技术是将没有完全发育成熟的单一圆形精细胞直接注入卵胞质内，跳越了精子在穿过透明带和卵质膜等过程中所发生的生理和生化反应；如果卵胞质成熟或活化程度不够，加之圆形未成熟精细胞成熟度比较差等原因，很可能造成ROSI受精的卵母细胞内部激活因子蓄积减少和生成不足，引起精核解聚困难、精圆核不能形成、第二极体不能排出、卵母细胞孤雌发育率增加等，使ROSI显微受精失败。

Pem gene is expressed in a time and stage specific manner. Pem transcripts are detectable as early as day 6 in mouse embryonic development, and are abundant in day 7 and 8, but decrease precipitously thereafter. Although Pem transcripts are not detectable in most of adult tissues, they are present in reproductive system. Furthermore, Pem has also shown to be specifically expressed in the proximal cauda and distal corpus regions of the epididymis, the regions where spermatozoa gain forward motility and fertilization competence.

Pem基因的表达具有明显的时间和空间特异性：在鼠胚发育的第6天，即可检测到Pem转录本的表达；第7-8天，Pem表达量达到最高，随后迅速减少；Pem基因在成年组织中一般不表达，但可在生殖组织表达；另外，Pem特异地在附睾近侧尾部和远侧的体部中表达，此处是精子获得运动性和受精能力的地方。

In addition, the Medical Scientific Committee on the British Government scientists have found that in recent decades to reduce male sperm count and testicular volume of octyl phenol with narrow, double-Fen A and D n-methyl-phthalic acid resin, and these substances are widely used in manufacture of baby bottles, canned food boxes, food packaging bags, such as coating the inner wall.

此外，英国政府医学科学委员会的科学家们发现，近几十年来男性精子数量减少和睾丸体积缩小与辛基苯酚、双芬A和丁基苯甲基酞酸脂有关，这些物质广泛用于制造奶瓶、罐头盒、食品包装袋等的内壁涂层。

Of the eons of geological periods recorded in the stratifications of the earth: of the myriad minute entomological organic existences concealed in cavities of the earth, beneath removable stones, in hives and mounds, of microbes, germs, bacteria, bacilli, spermatozoa: of the incalculable trillions of billions of millions of imperceptible molecules contained by cohesion of molecular affinity in a single pinhead: of the universe of human serum constellated with red and white bodies, themselves universes of void space constellated with other bodies, each, in continuity, its universe of divisible component bodies of which each was again divisible in divisions of redivisible component bodies, dividends and divisors ever diminishing without actual division till, if the progress were carried far enough, nought nowhere was never reached.

349在地球的层理留下记录的太古以来的地质时代。隐藏在大地的洞穴里和能移动的石头底下、蜂巢和土墩子中那无数微小的昆虫类的有机生物：微生物、病菌、细菌、杆菌、精子；凭着分子的亲和之凝聚力而粘在一根针尖上那几万几亿几兆个多不胜数、肉眼看不到的微小颗粒；人类的血浆是一个宇宙，群集着白血球和红血球，每个血球又各自形成一个空虚的宇宙空间，群集着其他球体；各个球体连续性地也是由可分割的构成体形成的宇宙，各个构成体又可以分割成为几个能够进一步分割的构成体。就这样，分子与分母实际上在并未分割的情况下就不断地减少了。如果这个过程延续到一定时候，就永远在任何地方也不会达到零。

RESULTS: The sperm count and activity were increased significantly, and abnormality percentage was reduced in stress group.

结果： 应激组大鼠体重的增重较对照组降低，精子数量减少，精子活率降低，畸形率升高，血清睾酮含量降低(P均。01)。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐