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| 1 | Ultrasonographic Monitoring of Previous Pregnant Corpus Luteum in Postpartum Cow显示文摘UltrasonographicMonitoringofPreviousPregnantCorpusLuteuminPostpartumCowTianWenru(NortheastAgriculturalUniversity,Harbin,1500... | Tian Wenru (Northeast Agricultural University, Harbin, 150030 PRC) | 1997 | Journal of Northeast Agricultural University(English Edition)1997，4，2： | 0 |
| 2 | Developmental competence and ultrastructural changes of heat-stressed mouse early blastocysts produced in vitro显示文摘Mouse early blastocysts were exposed to temperatures of 39℃ and 41℃ for 2 h,respectively,to determine their developmental competence and ultrastructural changes. The results showed that heat stress at 41℃ for 2 h,significantly reduced the percentages of expanded and hatched blastocysts,but not at 39℃ for 2 h. The average cell numbers in expanded blastocysts,which developed from early blastocysts heat-stressed at temperatures of 39℃ and 41℃,were significantly reduced. The average cell numbers in hatched blastocysts subjected to heat stress were no different from those in the control group cultured at 37℃. The mitochondria of the early blastocysts heat-stressed at 39℃ for 2 h,were slightly swollen,but they had recovered after culturing at 37℃ for 2 h. However,the mitochondria in the blastocysts heat stressed at 41℃ for 2 h were severely swollen,and their number increased. The ribosomes shed from the rough endoplasmic reticulum,and the number of secondary lysosomes in the plasma increased. The integrity of desmosomes was disrupted. The space between the nuclear envelope and the perivitelline membrane enlarged. The fibre fraction and the particulate fraction of nucleoli were separated. The heterochromatin in nucleoli was also increased in its quantity. There were some lamellar-shape structures and heterogeneous dense materials exhibiting in the cytoplasm. The ultrastructural changes induced by heat shock at 41℃ for 2 h were not reversible. In conclusion,the damage of heat stress to mitochondria,lysosomes,ribosomes and cell nucleus,may be one of the most important factors that inhibit the normal development of mouse early | Pingping Qu Wenru TIAN Tao LI Zhongling JIANG Shansong GAO Zhongjie TIAN Mingzhi WANG | 2009 | Current Zoology2009，55，1： | 0 |
| 3 | The Ultrasonic Immages of the Cervix in Postpartum Cow显示文摘Sequential ultrasonograms of the ccrvix and uterus were taken in both cross and longitudinal sections at different periods of involution in eleven postparturn Jersey cows, and in the meantime the concentrations of ocstndiol-17β and progesterone in peripheral circulation of the cows were measured by radioimmunoassay(RIA). Cervical involution was showed in detail by using ultrasound scanner during its whole involuting phase, and the oestrus could be indicated by the differences of the ultrasonograms of the genital tract at the time. It took 46.7+3.9 days for the cervix to complete involution after calving, and its involuting rate was delayed by the occurence of the periparturient fatty liver and injury of the cervix during parturtion. | Tian Wenru, Zhang Xueqing(Northcast Agricultural University:, Harbin 150030, P R C) | 1995 | Journal of Northeast Agricultural University(English Edition)1995，2，2： | 0 |
| 4 | Efficacy of oral nicotinic acid and choline in the treatment and preventionoffattyliverindairycow显示文摘Efficacy of oral nicotinic acid and choline in the treatment and preventionoffattyliverindairycowEfficacyoforalnicotinicacida... | Tian Wenru Zheng Changle Li Shoujun Zhou Jnanping Yang Hongjiang(Northeast Agricultural University,Harbin 150030,P.R.China)Wang Tao(Dairy Farm of Harbin City)Hu Qingde,Bai Yinmin,Ma Chengchang(Dairy Farm of Songhuajiang)Yang Dianjun (Dairy Farm of Sandao, | 1994 | Journal of Northeast Agricultural University(English Edition)1994，1，1： | 0 |
| 5 | The Resumption of Ovarian Activity in Postpartum of Chinese-Holstein Cows显示文摘TheResumptionofOvarianActivityinPostpartumofChinese-HolsteinCowsZhouHongzhe,TianWenru(NortheastAgriculturalUniversity,Harbin... | Zhou Hongzhe, Tian Wenru (Northeast Agricultural University, Harbin 150030, P R China) | 1998 | Journal of Northeast Agricultural University(English Edition)1998，5，1： | 0 |
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