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Avian influenza virus was isolated from the caecal tonsil, faeces, and kidney of the domestic ducks. The isolated virus was identified as a highly pathogenic H5N1, with a haemagglutinin proteolytic cleavage site deduced amino acid sequence of ... QREKRKKR/GLFGAIAG ... In order to determine the pathogenicity of the isolate, eight 6-week-old specific pathogen free chickens were inoculated intravenously with the virus, and all birds died within 24 h after inoculation.

病毒抗原可以从鸭的盲肠,扁桃体,肾脏及粪便分离出来,并且确定这种病毒是高致病性的H5N1,还从血凝素蛋白分解位点推断出病毒的氨基酸序列,为了了解独立群的发病机理,对8只6周龄鸡静脉注射这种病毒,结果所有的均在注射后24小时死亡。

Aian influenza irus was isolated from the caecal tonsil, faeces, and kidney of the domestic ducks. The isolated irus was identified as a highly pathogenic H5N1, with a haemagglutinin proteolytic cleaage site deduced amino acid sequence of ... QREKRKKR/GLFGAIAG ... In order to determine the pathogenicity of the isolate, eight 6-week-old specific pathogen free chickens were inoculated intraenously with the irus, and all birds died within 24 h after inoculation.

病毒抗原可以从鸭的盲肠,扁桃体,肾脏及粪便分离出来,并且确定这种病毒是高致病性的H5N1,还从血凝素蛋白分解位点推断出病毒的氨基酸序列,为了了解独立群的发病机理,对8只6周龄鸡静脉注射这种病毒,结果所有的均在注射后24小时死亡。

Results The main imaging of adult polycystic kidney disease signs: abdominal plain film (45 cases) showed renal shadow was lobulated increase; cystic wall calcification (14 cases); polycystic kidney disease and renal milk of calcium (8 cases); pelvis angiography (61 cases), the performance of the renal pelvis, renal calices separated, distorted, elongated; retroperitoneal inflatable angiography (6 cases): Performance increases of renal kidney shadow Shadow and the relationship between the neighboring organs, its boundaries clear and identified; CT scan (30 cases): the performance of the majority of the size of the renal low-density areas, ranging from thin-walled circular; B-mode ultrasonography (47 cases) showed a circular echo-free renal multiple classes of liquid dark area .

结果 成人多囊肾的主要影像学征象:腹部平片(45 例)显示肾影呈分叶状增大;囊壁钙化(14例);多囊肾合并肾钙乳(8例);肾盂造影(61例),表现为肾盂、肾盏相互分离、变形、拉长;腹膜后充气造影(6例):表现为肾影增大肾影与邻近器官之间的关系,其界限清晰可辨;CT扫描(30例):表现为肾内多数大小不等的薄壁圆形低密度区;B型超声(47例)表现为肾内多个类圆形无回声的液性暗区。结论影像学检查有助于提高多囊肾的诊断的准确性。

METHODS Volatile oil was extracted from Capparis spinosa L seeds using steam distillation method and the extractive rate was 1.12%.

用水蒸气蒸馏法提取种子中的挥发油并采用GC-MS技术分离鉴定其中的挥发性成分。

Cevadine was isolated from Eranthis hyemalis and its effects on normal cats blood pressure, hypertension rats and their tolerance to cevadine were determined by using direct carotis and indirect arteria caudilis manometric methods.

目的 开发新型降压药奠定理论基础方法从藜芦中提取分离出藜芦碱,采用颈动脉直接测压法和尾动脉间接测压法,测定了其对正常猫血压、高血压鼠的影响及其快速耐受性。

The results showed that Cpchia encoded the protein with chitinase activity and probably was related to cold tolerance of Chimonanthus praecox blooming.

上述结果说明,分离的Cpchia基因编码蛋白具有几丁质酶活性,而且可能与蜡梅花的抗寒性形成有关。

In this article,the development of molecular imprinted technology and mechanism of chiral recognition were introduced.

介绍了分子印迹技术及其手性识别机理的最新研究进展,对该技术在色谱分离领域的应用现状、存在的问题及解决方法进行了重点评述,并展望了其今后的发展方向。

The effects of cholic acid concentration and pH of the buffer on separation were studied, and the influences of organic additives such as methanol, acetonitrile, isopropyl alcohol were also examined.

该实验表明电化学检测同样可用于手性物质的分离,从而扩宽了电化学检测的应用范围,并为对映体的定量合成和纯度测定找到了灵敏的检测方法。

To study the bioactive components from water soluble extract of the Chinese eaglewood, various column chromatography of Chinese eaglewood led to the isolation of ten compounds. Their structures were elucidated as 2,3-bis(3-hydroxyphenyl)- propan-1-ol (1), [(2R,3R)-3-(4-amino-3,5-dimethoxyphenyl)oxiran-2-yl]methanol (2), 8-chloro-4'- methoxy-5,6,7,3'-tetrahydroxy-2-(2-phenethyl)-5,6,7,8-tetrahydrochromone (3), 4'-methoxy-5,6,7,3'-tetrahydroxy-2--5,6,7,8-tetrahydrochromone (4), the isomer of 4 (5), 4'-methoxy-5,6,7,8-tetrahydroxy-2-(3'-hydroxyphenethyl)-5,6,7,8- tetrahydrochromenone (6), 4'-methoxyisoagarotetrol (7), 6-hydroxy-2-(2-hydroxy-2- phenethyl)-chromone (8), 6-hydroxy-2-(2-phenethyl)-chromone (9), 6-hydroxy-2-(4'- hydroxy-2-phenethyl)-chromone (10), and Guaiacylacetone (11) by means of spectral analysis and comparison with references.

为了进一步发现沉香中具有生理活性的化学成分,本文对国产沉香的水溶性成分进行了研究,从中分离得到11个化合物,通过红外、紫外、质谱、核磁共振(1H-NMR, 13C-NMR, COSY, HSQC, HMBC, ROESY)波谱解析,分别鉴定为:2,3-二(3-羟基苯基)-丙-1-醇(1),[(2R,3R)-3-(4-氨基-3,5-二甲氧苯基)-2-氧化烯基]甲醇(2),8-氯-4'-甲氧基-5,6,7,3'-四羟基-2-(2-苯乙基)-5,6,7,8-四氢色原酮(3),4'-甲氧基-5,6,7,3'-四羟基-2-(2-苯乙基)-5,6,7,8-四氢色原酮(4),化合物3的差向异构体(5),4'-甲氧基-5,6,7,8-四羟基-2-(3'-羟基-2-苯乙基)-5,6,7,8-四氢色原酮(6),4'-甲氧基异沉香四醇(7),6-羟基-2-(2-羟基-2-苯乙基)色原酮(8),6-羟基-2-(2-苯乙基)色原酮(9),6-羟基-2-(4'-羟基-2-苯乙基)色原酮(10)和Guaiacylacetone (11)。

Results: The 12 kinds of toxicants including methyl acetate, ethyl acetate, benzene, toluene, ethylbenzene, butyl acetate, p-dimethylbenzene, m-dimethylbenzene, o-dimethylbenzene, n-butanol, cinnamene and cyclohexanone were separated well. Good linear relationship sensitivity and reproducibility were obtained and detection limits (S/N=3) of them were 0.2 mg/l respectively. Conclusion: In this paper, a new method for simultaneous determination of 12 kinds of toxicants by using gas chromatography has been described.

结果:对乙酸甲酯、乙酸乙酯、苯、甲苯、乙酸丁酯、乙苯、对二甲苯、间二甲苯、邻二甲苯、正丁醇、苯乙烯、环己酮12种有毒物质的分离效果好,线性和重现性均较好,方法的检测限达到0.2 mg/L。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。