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91.
研究效益的未来经济分析:高粱晚施氮素的原因——(P.D.Chudleigh等),InProceedingsoftheSecondAust-ralianSorghumConference,Gatton,4to6February1992,Vol.2,No... 相似文献
92.
93.
Objective To characterize the flash electroretinogram (ERG) in the Golden Retriever muscular dystrophy (GRMD) dog and to compare the results with those from a control group of Golden Retrievers. To investigate whether similar abnormalities of the ERG as those found in a majority of human patients with Duchenne muscular dystrophy (DMD) are also observed in the GRMD dog, the canine model for DMD. Animals Five GRMD dogs and five age‐matched clinically normal Golden Retrievers. Procedure An ophthalmic examination was carried out prior to performing electroretinography under general anesthesia. Rod, combined rod–cone and oscillatory potentials responses were recorded after dark adaptation. Responses to 30‐Hz‐flicker were recorded after light adaptation. The ERG responses of the GRMD dogs were compared with those of the control dogs by use of a Wilcoxon signed rank test. Results GRMD dogs had significantly reduced a and b‐wave amplitudes after dim white flash stimuli (rod response) and reduced a‐wave amplitude after bright white flash stimuli (rod–cone response). Conclusion and clinical relevance The ERG abnormalities observed in the GRMD dog suggest a dysfunction in the rod signaling pathway. These ERG alterations are different from those observed in human patients with DMD. 相似文献
94.
【目的】研究不同坡向、不同海拔梯度的草地植物群落特征差异,为合理利用草地资源提供科学依据。【方法】以位于西天山支脉乌孙山南麓的昭苏县和乌孙山北麓的察布查尔县天然草地为对象,采用典型的样方调查法,分析不同坡向(南坡、北坡)和海拔梯度(1 600~3 000 m)的草地植物群落物种组成,群落数量特征、物种多样性,研究草地植物群落物种多样性在不同海拔和坡向上的分布规律。【结果】同一海拔梯度上,南坡植物物种数多于北坡;在不同坡向上,基本上南坡各海拔草地植物群落高度大于北坡,而密度和盖度小于北坡。南坡各多样性指数沿着海拔高度变化呈现出双峰格局;北坡Simpson指数、Shannon-Wiener指数和Pielou指数沿着海拔高度变化均呈现出波浪型变化趋势,Patrick指数则呈现出双峰格局。【结论】乌孙山植物群落特征及物种多样性的变化是由海拔和坡向为主的多种环境因子综合作用的结果。 相似文献
95.
由新疆维吾尔自治区农牧业机械管理局、新疆维吾尔自治区科技兴新办公室联合主办的自治区玉米、水稻收获机械化演示会在2007年9月20日至21日伊犁隆重召开。 相似文献
96.
Jiménez-Escrig A Dragsted LO Daneshvar B Pulido R Saura-Calixto F 《Journal of agricultural and food chemistry》2003,51(18):5540-5545
Artichoke (Cynara scolymus L.), an edible vegetable from the Mediterranean area, is a good source of natural antioxidants such as vitamin C, hydroxycinnamic acids, and flavones. The antioxidant activity of aqueous-organic extracts of artichoke were determined using three methods: (a) free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH(*)) scavenging, (b) ferric-reducing antioxidant power (FRAP), and (c) inhibition of copper(II)-catalyzed in vitro human low-density lipoprotein (LDL) oxidation. In addition, the present study was performed to investigate the ability of the edible portion of artichoke to alter in vivo antioxidative defense in male rats using selected biomarkers of antioxidant status. One gram (dry matter) had a DPPH(*) activity and a FRAP value in vitro equivalent to those of 29.2 and 62.6 mg of vitamin C and to those of 77.9 and 159 mg of vitamin E, respectively. Artichoke extracts showed good efficiency in the inhibition in vitro of LDL oxidation. Neither ferric-reducing ability nor 2,2'-azinobis(3-ethylbenzothiazolin-6-sulfonate) radical scavenging activity was modified in the plasma of the artichoke group with respect to the control group. Among different antioxidant enzymes measured (superoxide dismutase, gluthatione peroxidase, gluthatione reductase, and catalase) in erythrocytes, only gluthatione peroxidase activity was elevated in the artichoke group compared to the control group. 2-Aminoadipic semialdehyde, a protein oxidation biomarker, was decreased in plasma proteins and hemoglobin in the artichoke-fed group versus the control group. In conclusion, the in vitro protective activity of artichoke was confirmed in a rat model. 相似文献
97.
斯拉浦尔·伊斯玛依尔 《新疆农机化》2011,(6):10-10
<正>为提高预算完整性,加快支出进度,近日财政部印发通知,安排各省(区、市)农机购置补贴资金2012年提前通知的部分共130亿元,与2011年第一批补贴资金110亿元相比,同比增加20亿元。通知要 相似文献
98.
[目的]检测新疆南疆7个县/市瓜类褪绿黄化病毒(Cucurbit chlorotic yellows virus,CCYV),进行系统发育分析,为新疆南疆CCYV预警和防控提供参考.[方法]于2019年,从中国新疆南疆7个县/市采集带有黄化特征的51份甜瓜叶片样品,RT-PCR进行CCYV的检测,进行特异性片段的克隆、... 相似文献
99.
采用PCR—SSCP技术研究绵羊高繁殖力候选基因FecX^H位点在多浪羊中的单核苷酸多态性。试验结果表明,多浪羊中BMP15基因的FecX^H位点并不存在多态性,推断FecX^H位点与多浪羊多胎性状无关。 相似文献
100.
The splenic lobe (Lobus splenicus) of the pancreas of young meat-type quails (Coturnix c. japonica) was examined by immunohistochemical and light microscopic methods. The endocrine cells are mainly grouped as alpha, beta and mixed islets. A large region consisting of alpha cells is located in the central region of the splenic lobe whereas numerous beta islets are detected in the periphery of the splenic lobe. Alpha islets are in the majority composed of toluidine blue positive A cells and a few toluidine blue negative D and / or avian pancreatic polypeptide (APP) endocrine cells. Beta islets contain only a few toluidine blue negative B and a few D cells. Immunohistochemical staining of the splenic lobe reveal in the centre of beta islets numerous insulin immunoreactive cells and scarcely in alpha islets, exocrine tissue and / or among acinar cells. Somatostatin immune-reactive cells form a circular layer in the periphery of beta islets whereas these cells are uniformly distributed throughout the alpha islet parenchyma and exocrine tissue. In conclusion, the morphology but also the endo- and exocrine functions of the splenic lobe of quails are similar to observations in other avian species such as chicken, duck, goose and pigeon. 相似文献