炮孔中的水中爆炸冲击波

本文分析了含水炮孔爆破时,水中爆炸冲击波形成和传播的规律以及对孔壁的冲击作用.     

测定保温材料导热系数的自补偿圆管法

测定保温材料导热系数的自补偿圆管法⒇王素美宗祥康施明恒（东南大学动力工程系，南京２１００１８）测定工程保温材料，特别是管形保温材料导热性能，一般采用圆管法［１］．圆管法的基本原理是通过圆筒壁的一维稳态导热［１，２］．被测试材做成圆管状，置于圆管导热装...     

石英管烧结成型设备的微机控制

介绍石英管烧成型设备－－气炼机的微机控制系统，系统采用双ＣＰＵ单片微机微机控制四台步进电机以完成气炼机的多种复杂运动，文中介绍了控制系统的硬件和软件结构。     

乳状液的热力学特征及其它

本文较详尽地介绍了乳状液的稳定性理论、乳状液类型的测定、变型、去乳化等基本特征。     

烟尘水热化合反应制备钙基脱硫剂工艺优化

运用均匀试验设计和回归分析方法优化烟尘水热化合反应制备钙基脱硫剂工艺,得到比表面积回归方程．分析不同水热条件及其相互作用对钙基脱硫剂比表面积的影响,经优化筛选并兼顾实际操作得到最佳水热条件,制备的高效钙基脱硫剂比表面积超过120 m2/g,是单一Ca(OH)2的10倍以上,优化效果显著,可以为工业生产提供依据．     

Induction of nicotine in tobacco by herbivory and its relation to glucose oxidase activity in the labial gland of three noctuid caterpillars

Tobacco Nicotiana tabacum L. is a host plant ofHelicoverpa armigera (Huibner), Helicoverpa assulta Guenee and Spodoptera litura (Fabricius) (Lepidoptera, Noctuidae). The difference in leaf nicotine response to the feeding by these three larvae and the mechanical simulation of their feeding was examined by HPLC. Results indicated that nicotine induction was suppressed by H. armigera and H. assulta larvae feeding or by simulated damage treated with their labial glands extracts. The production of nicotine was also suppressed by the glucose oxidase from Aspergillus niger when it was treated on mechanically wounded leaf area. On the contrary, the nicotine production was stimulated by S. litura larva feeding or by simulated damage treated with its labial gland extract. Heat denature can not counteract the stimulation effect of the S. litura labial gland extracts to tobacco nicotine production. The glucose oxidase activity was detected in labial gland extracts of both H. armigera and H. assulta, but the activity in H. armigera was significantly higher than that in H. assulta. No glucose oxidase activity was detected in labial gland extracts of S. litura. It is shown that the glucose oxidase activity in labial glands of caterpillars plays an important role in the nicotine response to herbivory. The glucose oxidase was mainly contained in the labial gland of H. armigera larva, and had the highest activity at pH 7.0. D-Glucose was the optimal substrate of the glucose oxidase. Labial gland glucose oxidase activities varied daily during larval development with high activities found when larvae were actively feeding.     

心绞痛患者经PCI治疗后不良心脏事件与血清总胆红素水平相关性分析

目的分析心绞痛患者经PCI治疗后不良心脏事件与血清总胆红素水平的相关性.方法选取行PCI的129例心绞痛患者,根据血清TBIL水平将患者分为对照组和观察组,比较两组患者实验室检查指标;比较分析两组患者冠状动脉造影检查结果;比较分析两组患者行PCI的相关指标;比较两组患者发生不良心血管事件(MACE)的情况,并进行Cox比例风险回归分析.结果观察组患者TG,TC水平高于对照组,差异具有统计学意义(P0.05),而其余指标(血糖、Scr、Hb、LDL-C、HDL-C、AST)两组患者比较差异无统计学意义(P0.05);观察组患者冠状动脉病变支数、靶病变部位、慢性闭塞病变及LVEF≤40%与对照组比较差异均无统计学意义(P0.05);观察组患者置入支架长度长于对照组,差异具有统计学意义(P0.05);两组患者经桡动脉途径行PCI者所占比例、置入支架数和置入支架直径与对照组比较,差异无统计学意义(P0.05);术后观察组患者随访期间MACE发生率为24.1%,高于对照组的8.4%,差异具有统计学意义(P0.05);Cox比例风险回归分析结果显示:血清TBIL水平是心绞痛患者PCI后MACE的保护因素,置入支架长度则是危险因素.结论心绞痛患者PCI后血清TBIL水平越低其预后越差;血清TBIL水平是心绞痛患者PCI后MACE的保护因素,置入支架长度则是危险因素.     

向海自然保护区昆虫资源调查

湿地是一种特殊的土地资源和生态环境,具有调节水分循环、维持湿地特有动植物生存等基本生态功能.调查向海国家级自然保护区昆虫资源,共采集昆虫114种,隶属12目63科.在物种组成上,以鳞翅目、鞘翅目和直翅目为主要优势类群,主要优势种有中华蚱蜢(Acrida cinerca Thunberg)、黑足婪步甲(Harpalus roninus Bate)、榆紫叶甲(Ambrostoma quadriimpressum(Motschulsky)).沙丘榆林生境有11目51科95种,其中,鞘翅目有16科31种;芦苇沼泽生境有9目33科56种,其中,鳞翅目有9科20种;羊草草原生境有8目32科67种,其中,鳞翅目有9科17种.对向海自然保护区主要害虫种类及资源昆虫进行了初步分析.     

Complementation in the composition of steel slag and red mud for preparation of novel ceramics

A method for preparing novel ceramics was developed in this study. Different ratios red muds were added to steel slags to optimize the preparation of novel ceramics by a traditional ceramic preparation process. The sintering mechanism, microstructure, and performance were studied by X-ray diffraction techniques, scanning electron microscopy, and combined experiments of linear shrinkage, water absorption, and flexural strength. The results confirmed that red mud can reduce the volumetric instabilities through the complementarity of red mud and ferroalloy slag. The crystal phases in the ceramics are all pyroxene group minerals, including diopside ferrian, augite, and diopside. The flexural strength of the ceramic that contains 40wt% red mud and was prepared at the optimal sintering temperature (1140℃) is greater than 93 MPa; its corresponding water absorption is less than 0.05%.