Results 31 to 40 of about 175 (114)
Investigation on the toxicity interaction mechanisms of Benzalkonium Chloride on the Rabbits’ cornea [PDF]
, 2010 目的:观察苯扎氯氨对兔角膜急性毒性作用并探讨其机制。方法：按照局部点眼的方法，分别给兔滴用不同浓度的苯扎氯氨（0.01%、0.05%和0.10%），每天两次，连续4天。对侧未治疗眼做为对照。裂隙灯显微镜及泪液分泌实验（Scherimer’s）观察其眼表及泪膜变化。共焦显微镜观察活体角膜各层细胞结构变化。观察角膜MUC5AC、ZO-1表达及分布情况，结合荧光渗透试验（CF）了解其对角膜内皮屏障结构及功能的影响。结果：裂隙灯显微镜及Scherimer’s实验未发现泪膜及角、结膜改变 ...
李植源
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Shuitu Baochi Xuebao, 2017 通过室内培养试验，采用PAM、腐殖酸、壳聚糖、硫酸铝4种土壤结构胶结剂对促进黄绵土＜0.25 mm团聚体形成大团聚体的过程和效果开展研究。结果表明：（1）从新形成土壤团聚体的粒径分布来看，4种胶结剂均有利于＜0.25 mm粒径的团聚体形成更大的团聚体，尤其是对于增加＞5 mm的土壤团聚体含量效果明显；（2）4种胶结剂施入＜0.25 mm黄绵土团聚体，均可有效地增加黄绵土团聚体的平均重量直径和几何平均直径，提高了团聚体稳定性，且随胶结剂施用浓度的增加呈升高趋势；（3 ...
尚应妮, 赵世伟, 霍
doaj
Degradation of HPAM-containing wastewater with integrated process of UASB and immobilized microorganism reactor [PDF]
, 2013 随着聚合物驱油技术在油田的广泛推广,部分水解聚丙烯酰胺(HPAM)在为油田提高采收率的同时,对当地环境也产生了相当大的危害。本文在对含聚污水水质分析和可生化性分析的基础上对污水进行可生化性调整,运用“气浮-uASb-水解酸化-微生物固定化反应器“组合工艺对含聚污水进行了生化处理模拟实验。模拟实验分为静态模拟和动态模拟两部分。静态模拟实验中,降解6天后,聚丙烯酰胺降解率达到89.7%。动态模拟试验中,组合工艺处理2天以后,HPAM降解率为88.65%,原油总去除率为99.40%,出水COd总去除率为93 ...
刘江红 +4 more
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Research progress on extraction, physiological function and application of pectin [PDF]
Pectin is a kind of natural polysaccharide polymer, which is an important part of the cell wall of higher plants. It has physiological functions such as cholesterol-lowering, anti-tumor, anti-oxidation and hypoglycemic, and beneficial to intestinal ...
FEI Congxuan +4 more
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Impact of phosphorus loss on water environment in intensive livestock rearing areas and the countermeasures. [PDF]
, 2004 概述了畜禽养殖废物中磷的流失对水环境的影响,分析养殖废物中磷的来源和流失途径,并从保护水资源的角度提出减少畜禽粪便中磷流失的管理和控制措施。Impacts of the phosphorus losts from livestock waste on water environment were reviewed,and sources and pathways of the loss of phosphorus from livestock waste were analyzed.On such a ...
曾悦, 洪华生, 郑彧, 陈伟琪
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Whole Grain Food Standard System Construction Status and Development Direction [PDF]
Existing studies have clearly demonstrated that people eating more whole grains have reduced risks of many chronic metabolic diseases compared to those eating less.
TAN Bin, TIAN Xiao-hong, ZHAI Xiao-tong
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Synthesis of compact ZSM-5 zeolite membrane by adding the promoter NaCl [PDF]
, 2003 The compact ZSM-5 membranes was synthesized on porous alumina substrates by pre-coating narrosized ZSM-5 seeds and then employing the twice hydrothermal synthesis with adding the promoter NaCl. Effect of Na+ concentration on the formation of membrane was
Chao, ZS +9 more
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Dianci bileiqi, 1975 提高绝缘子金属附件热镀锌层均匀性,对延长绝缘子的使用寿命是有好处的。在批林批孔运动的推动下,我们对提高热镀锌层均匀性的问题进行了研究,已初见成效。实践证明,提高热镀锌层均匀性的关键在于工艺方法的改进。我厂旧的热镀锌工艺的特点是：(1)镀锌温度高,一般在550—600℃; (2)在锌液中加铝,增加锌液的流动性和提高锌层表面的光泽;(3)不使用"助镀溶剂",酸洗烘干后立即镀锌;(4)锌层镀后没有冷却就用"卡"、"墩"的方法除掉表面的积锌。这就使锌层薄而不均匀,致使锌层硫酸铜试验次数很低 ...
大连电瓷厂
doaj
Dianci bileiqi, 2007 为了缩短生产周期,更好地保证瓷套的胶装质量。开发了新型的S1胶合剂（硫铝酸盐水泥胶合剂）.并与S胶合剂（硅酸盐水泥胶合剂）各项技术性能进行了对比试验。结果表明,S1水泥胶合剂具有早期强度高、后期强度发展快的特点,并有较好的流动性且不分层;S1水泥胶合剂比S水泥胶合剂的机械强度高,1d的强度提高了81.3%,3d的机械强度提高了59.0%,28d的强度提高了50.9%。S1水泥胶合剂还具有凝结时间较快、低收缩、低碱性、耐蚀性及抗冻性好的特点,增加了产品的整体强度,显著提高了经济效益。
张秀华, 张海滨, 马智强
doaj
Creep and water loss characteristics in hardening bodies of water-rich filling materials [PDF]
, 2016 In order to investigate the characteristics of deformation and water loss of hardened paste of water-rich filling material under aging effect,the creep property of water-rich filling materials with a certain mass ratio of water to solid was studied in ...
LIU Juan-hong, ZHAO Xiang-hui, ZHOU Qian
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