奶犊牛肺炎的治疗对比试验     

候振中  赵林山 《黑龙江畜牧兽医》1996,(7):9-10

将６９头肺炎奶犊牛分成３组，分别为２４，２５和２０头，分别应用双莴连注射液。氨基苄青霉素和恩诺沙星进行治疗，治愈率分别为６２．５％，，６８．０％和９０％，治愈时间分别为１１．３±１．２０，９．８±１．４和４．４±１．１ｄ。治疗结果表明恩诺沙星组的治疗效果明显优于另外２组，该药可作为治疗犊牛肺炎的首选药物。  相似文献   

黄山松球果生命表的研究   总被引：6，自引：2，他引：4  

袁荣兰  余其龙 《浙江林学院学报》1996,13(4):427-434

１９９２－１９９４年，在浙江省天台县华顶林场北山区铁泉湖黄山松种子园研究了黄山松球果生命表。结果表明，从雌球花开放球果成熟过程中，导致球果死亡的主要因子是松实小卷蛾幼虫的危害。  相似文献   

Concentration of Serum Prealbumin (Pr) Protein in Sick Horses and Its Correlation to Blood Leucocyte Count and Albumin Content in Serum     

Nils Ek 《Acta veterinaria Scandinavica》1980,21(4):482

Studies of Pr protein concentrations in sera of sick horses were carried out using Mancini et al.’s (1965) immunodiffusion technique. Relative values against a chosen standard of 100 % were determined for a total of 102 horses. Horses with acute infections had Pr protein values significantly above the normal. The highest individual Pr protein value recorded in this group was 202. Horses suffering from acute laminitis and malignant tumours also had increased Pr protein values.There was a positive correlation between the Pr protein value and the blood leucocyte count and a negative correlation between the Pr protein value and the albumin content in serum.  相似文献   

水分亏缺条件下草莓幼苗几个水分生理指标的变化     

姚允聪  王有年  张瑞  赵玉田 《果树学报》1992,(4)

在离体脱水和不同浓度蔗糖溶液培养条件下,对草莓幼苗的脂质过氧化作用产物丙二醛、过氧化物歧化酶、细胞膜相对透性和组织相对含水量的变化及其相互关系进行研究。结果表明:随着组织相对含水量降低,丙二醛含量增高,细胞膜相对透性增大;丙二醛含量和组织相对含水量之间呈负相关;r新茎=0.89(HS),r叶片=0.75(HS),组织细胞膜相对透性随着丙二醛含量的增高而增大;在离体条件下过氧化物歧化酶对丙二醛含量增高有一定抑制作用。  相似文献   

海南香蕉花叶病病毒分离物的研究     

刘志昕  郑学勤 《热带作物学报》1993,14(2):93-97,T000

对海南产区感染花叶病的香蕉病株进行生物学分离获得一种直径为28—30nm的球形病毒分离物,该分离物汁液接种可引起香蕉花叶症状,并侵染一些黄瓜花叶病毒(CMV)的诊断寄主植物,提纯病毒外壳蛋白由一种分子量约为3.2×10~6道尔顿的亚基构成,琼脂免疫双扩散试验表明,该病毒分离物和CMV有血清学关系,根据这些性质该病毒分离物被鉴定为黄瓜花叶病毒。  相似文献   

化学镀铜中Cu（Ⅱ）—EDTA电还原机理     

黄树坤  邝少林 《湖南农业大学学报(自然科学版)》1993,20(1)

The mechanism of electrochemical reduction for species Cu(I)-EDTA in eiectroless copper plating was studied by means of polarization curve,rotating disc electrode,chrono-potentiometry and chronocoulometry.The result of reaction order determination indicat  相似文献   

Studies on Nitrogen Economy and Productivity of Wheat as Affected by Rainy Season Legumes under Irrigated Conditions     

S. Singh    I. P. S. Ahlawat  K. N. Ahuja 《Journal of Agronomy and Crop Science》1993,171(5):343-349

A field experiment was conducted during July 1986–April 1988 at New Delhi, to evaluate the relative contribution of rainy-season legumes towards the growth and productivity of succeeding wheat ( Triticum aestivum [L.] emend. Fiori & Paol), find out economic optimum dose of nitrogen for succeeding wheat and screen a legume which can be best knitted in wheat based cropping system.
HD 2329 wheat performed better when grown after legumes than when grown after Local fodder sorghum ( Sorghum bicolor [L.] Moench). N economy in wheat was greater (65–78 kg/ha) after Sona clusterbean ( Cyamopsis tetragonoloba [L.] Taubert) and T-9 blackgram ( Phaseolus mungo L.) over sorghum. The economic optimum dose of N for wheat following pigeonpea ( Cajanus cajan [L.] Millsp.), soybean (Glycine max [L.] Merr.), groundnut ( Aracbis bypogaea L.), blackgram ( Phaseolus mungo L.) and clusterbean were 110.1, 103.6, 113.7, 109.6 and 92.3 kg/ha respectively.  相似文献   

孕牛血清中早孕因子的分离纯化   总被引：2，自引：0，他引：2  

赵明  孙文东  努尔·波拉提  邓雁如  吴瑞英  迈迪娜  王祥  石国良 《畜牧兽医学报》2001,32(2):129-133

采用DEAE－Sepharose(DEAE-琼脂糖凝胶）、CM－Sepharose(CM-琼脂糖凝胶）等离子交换层析、抗孕牛全血清IgG-Sepharose 4B亲和层析等技术，分离纯化妊娠4－5个月健康孕牛全血清中的早孕因子（EPF），用玫瑰花环抑制实验对各阶段产物EPF活性进行检测。结果表明，经层析过柱后的CM－ⅡA提取物有EPF活性。经SDS－PAGE银染显色证实它含有分子量为21、67、80KD的蛋白，实验结果支持21KD的多肽为主要EPF活性物成分。同时实验表明了亲和层析对进一步纯化EPF是可行的。  相似文献   

对合半群中元素的*·Moore-Penrose逆     

庄瓦金 《福建林学院学报》1991,11(1):26-29

本文给出了对合半群中元素的*·Moore-Penrose逆的十种刻划,证得了此广义逆的八个表达式,从而将〔2～5〕的相应结果推广到半群中。  相似文献   

裂褶菌发酵生产苹果酸的提取和鉴定   总被引：1，自引：1，他引：0  

钱秀萍  杨庆尧 《食用菌学报》1994,(2)

裂褶菌(Schizophyllum commune)的液体培养基能发酵产生苹果酸,经10天振荡培养后,发酵液中的苹果酸积累量为1600mg/100ml。采用离子交换法提取的苹果酸,经纸层析鉴定其hRf值为61.5,熔点为97～100℃,旋光度(?)=-5.0,红外谱的吸收高峰在3200cm~(-1)、1700cm~(-1)、1400cm~(-1)、1300cm~(-1)、1200cm~(-1)和660cm附近,结果与标准苹果酸一致。  相似文献