Effects of aminoglycoside antibiotics on renal antioxidants, malondialdehyde levels, and some serum biochemical parameters

Effects of amikacin, gentamicin, kanamycin, and streptomycin on renal tissue superoxide dismutase, glutathione peroxidase, glutathione and malondialdehyde, serum creatinine, potassium, sodium, total protein, glucose, uric acid, and total bilirubin levels were investigated. All aminoglycoside antibiotics decreased renal tissue glutathione levels.     

灭菌肥Ⅰ型涂治苹果树腐烂病效果

试验于１９９２～１９９４年在山东和北京的６个地区，１４个苹果园进行。田间试验表明，用灭菌肥Ⅰ型５０倍液涂治苹果树腐烂病患处，平均治愈率可达９０％以上，比对照２％福美砷当年平均治愈率提高７．２２─２９．５１％，周年平均治愈率提高１８．０５％～３２．３９％，愈伤组织宽度增加３．０３％～２９．２３％。室内试验表明，灭菌肥Ⅰ型最低抑菌剂量１０００倍，抑菌面积可达２２８９．０６ｍｍ２。     

Presentation of postweaning Escherichia coli diarrhea in southern Ontario, prevalence of hemolytic E. coli serogroups involved, and their antimicrobial resistance patterns

Post-weaning Escherichia coli diarrhea (PWECD) in Ontario was investigated using a case-control study involving 50 Ontario nurseries. The clinical signs and the impact on productive parameters were determined by means of a producer survey. The hemolytic E. coli serogroups involved in PWECD (O149:K91:K88) were examined in this study. Based on a polymerase chain reaction test, the hemolytic E. coli from 82% of the case herds were positive for 3 enterotoxins (STa, STb, and LT), those from 12% of the case herds were positive for STb and LT only, and those from one herd (6%) were positive for 3 enterotoxins, as well as for verotoxin and F18 pili. The E. coli involved in disease were resistant to multiple antibiotics. Case farms commonly used a wide variety of antibiotics either in the feed or water, or as injectable drugs. The most common antibiotic used to treat PWECD on the study farms was apramycin, but evidence of resistance to this antibiotic was noted. The PWECD problem was commonly seen within a week of weaning but onset of diarrhea was reported as late as the grower-finisher stage. Growth rate was poorer in case herds and mortality was higher than in control herds, demonstrating that PWECD is an economically important disease in Ontario.     

跑车带锯机列的电气改造

本文通过对木工跑车带锯机列摇尺制动和摇尺操纵的电器改造，实现了摇尺自控和跑车摇控。提高了木材出材率，改善了工人的劳动条件。     

类风湿关节炎的蜂疗医治法

类风湿关节炎多为对称性，发病原因不明，多发于20-45岁，女性多于男性。现代医学认为此病与感染、自身免疫下降、遗传因素、内分泌失调等有关，而寒冷和潮湿是诱发本病的重要因素。     

2005年12月份全国饲料生产情况分析

1生产总况2005年12月份抽查筛选了28个省95家饲料企业,总产量90.6万t,同比下降8.01%,环比下降8.47%。其中配合饲料65.6万t,同比下降9.62%,环比下降11.77%;浓缩饲料21.20万t,同比下降4.37%,环比增长1.65%;复合预混料3.6万t,同比增长2.35%,环比增长1.46%。配合饲料、浓缩饲料和复     

橄榄星室木虱的发生为害及综合防治

莆田栽培橄榄的历史悠久，百年以上的橄榄树随处可见。因其果肉中含有丰富的营养物质，具有较高的药用价值，且耐旱性强，寿命长，产量高，经济效益好，因而成了主产地果农的摇钱树。然而近几年来，橄榄星室木虱为害日趋严重，导致橄榄产量逐年减少，有些产区甚至到了濒临绝收的地步。如西天尾镇溪白村原有30多公顷橄榄树，每年可摘果100吨左右。现已有4／5的橄榄枯死，年采摘量不足2吨。为指导广大果农防治。现将橄榄星室木虱（以下简称木虱）的发生规律、原因及综合防治措施介绍如下：     

尕海地区弃耕地土壤可溶性盐分测定

１９９０～１９９３年在柴达盆地尕海地区弃耕地进行土壤可溶性盐分测定，测定结果，该地区土壤盐分组成为氯化物－硫酸盐和硫酸盐－氯化物，大部分地区耕层盐分含量小于１０ｇ．ｋｇ＾－１，少部分盐荒地表层含盐量高达７０ｇ．ｋｇ＾－１，牧草生长季节中，土壤盐分含量最低期在６月份。