TY型保鲜袋对黄瓜贮藏品质影响

本试验采用两种规格的TY型黄瓜保鲜袋和市售2．5kg普通食品袋以及在袋内是否加KMnO4载体对黄瓜进行贮藏试验，分别在12℃-15℃及冰箱冷藏温度条件下贮藏。贮藏期间对黄瓜的叶绿素含量、水分含量、Vc含量等6项指标进行定期测定。结果表明：TY型保鲜袋内的黄瓜外观品质好，营养成分损失明显少于对照食品袋，另外加KMnO4载体袋内黄瓜贮藏效果好于没加的，12℃-13℃条件下的贮藏效果优于冰箱冷藏条件下的贮藏效果。     

我国草坪发展现状及前景

阐述了我国草坪业发展的现状及存在的一些问题，草坪草种主要靠进口，草坏建设重建植轻管理及草坏产业的不完善等。并根据社会和市场的需求预测我国草坪业发展的前景，提出草坏草种的育种目标。     

汽车QD高压线的研制

研究了汽车ＱＤ高压线的结构及增强点火能量的原理。该线安装后与普通高压线比较，具有提高动力，节约燃油、减少污染，起动迅速等优点。     

汽车车身模型表面点位测定的近景摄影测量方法

近景摄影测量是一种不接触物体而精确地测量物体的空间坐标及绘图的新型测量方法。本文简述了近景摄影测量的基本原理,通过对汽车模型外壳的近最摄影测量试验,绘制出汽车车身外形图和解算出模型点的空间坐标,其精度可达±0.302mm。研究表明,在汽车外型设计和品质检测中采用这种方法是行之有效的。     

整形修剪方式对高密桃园桃树生长和结果的影响

1988—1990年桃树高度密植栽培试验结果表明:多主枝自然形整形修剪,树高1.3—1.6m,结果枝比率高,花芽质量好,丰产、稳产;集约化整形修剪树体内膛通风透光虽好,但对提高结果枝比例和花芽质量无显著促进作用,可用于树冠部分交替更新;机械化整形修剪经重短截后,剪口萌发的新梢木质化程度与花芽着果率均低,经一年培育能形成良好树冠,宜用于隔年结果栽培制度.试材所用3个品种中以锦绣密植栽培表现最佳,果实质量较好,3年生树累积产量每666.7m~2为3382.7kg,金晖最差仅336.0kg,雨花露为1158.7kg.锦绣密植园栽后3年累积经济收入比同期种植的传统园高26倍.因此高效省工的桃树密植栽培制度有广泛推广应用价值.     

禽霍乱免疫母鸡血清抗体和蛋黄抗体消长规律及其相互关系的研究

通过对禽霍乱菌苗免疫产蛋母鸡的血清和蛋黄的抗体定时检测后发现，免疫母鸡的血清抗体和蛋黄抗体的升降趋势基本一致（ｒ＝０．９４），但后者较前者迟后３～６ｄ；血清抗体和蛋黄抗体的滴度分别在加强免疫后的１～３ｄ和３～６ｄ都有不同程度下降，加强免疫前的滴度越高，免疫后的滴度下降幅度越大；蛋黄抗体水平普遍比血清抗体水平低，两者间的差异极显著（Ｐ＜０．０１），这可能是与禽多杀性巴氏杆菌本身的主要抗原成分（ＴＩ抗原）在鸡体内主要产金ＩｇＭ有关。     

Effects of oxidized low density lipoprotein and vitamin E on the levels of IL-6,IL-8 and TNF-α in cultured human umbilical vein endothelial cells

AIM:To investigate effects of OX-LDL and VitE on the levels of IL-6,IL-8 and TNF-α in human umbilical vein endothelial cells(HUVEC).METHODS: Human umbilical vein endothelial cells were obtained by in vitro culture. HUVEC treated with or without Vit E was incubated with OX-LDL, and the levels of IL-6, IL-8 and TNF-α were determined by enzyme-linked immunosorbent assy technique. RESULTS:50 μg/L,100 μg/L, 200 μg/L OX-LDL induced the release of IL-6,IL-8 and TNF-α by HUVEC in a dose-dependent manner. Compared with the control group , the levels of IL-6 and IL-8 were significantly increased at 6-12 h of stimulation with OX-LDL . Maximal levels of IL-6 and IL-8 occurred after 24-36 h, reaching a plateau maintained for at least 48 h. TNF-α rose after 2-6 h in HUVEC, and reached a maximum after 12 h. In contrast to IL-6 and IL-8, TNF-α declined after 48 h. However, when VitE (50 mg/L,100 mg/L,200 mg/L)was added, it can significant inhibited the release of IL-6, IL-8 and TNF-α in a dose-dependent manner, and after 48 h these cytokines have no diference between OX-LDL+VitE groups and OX-LDL groups. CONCLUSION: OX-LDL can obviously stimulate the production of IL-6,IL-8 and TNF-α in vascular endothelial cells, which can significantly be inhibited by VitE in a short time.     

PERCUTANEOUS NEPHROPYELOCENTESIS AND ANTEGRADE URETEROGRAPHY: A FLUOROSCOPICALLY ASSISTED DIAGNOSTIC TECHNIC IN CANINE UROLOGY

Fluoroscopically assisted percutaneous nephropyelocentesis and/or antegrade ureterography was performed on six dogs. These technics were useful for obtaining renal pelvic urine specimens for culture. Percutaneous nephropyelocentesis confirmed diagnoses of pyelonephritis. Injection of a radiopaque contrast medium into the ureter or renal pelvis was useful in evaluating the ureter in those dogs in which excretory urography provided insufficient detail. No complication was associated with the technics.     

根区不同改土模式对葡萄根系生长的影响

利用草炭对葡萄根区进行改良,比较研究了传统混合和局部改土方式对葡萄根系形态、生物量、冠根比、根系活力和根系激素状况的影响。结果表明:草炭可有效提高根系干物重、根系活力以及根系Zip、IAA和GA的含量,降低根系ABA含量。不同改土模式对葡萄根系的影响不同,局部改土一定程度提高根系干重和根系活力,并有效促进了地上和根系的平衡生长。     

计算机病毒传染的防止

讨论了一种修改中断以及检测内存和文件长度来检查和预防某些计算机病毒的方法,同时对所编程序中使用的主要技术作了比较详细的说明。