Results 41 to 50 of about 609,728 (152)
Gongye shui chuli, 2021 以土霉素制药废水为研究对象进行电子束辐照试验，研究了辐照剂量、初始COD、pH及无机离子浓度对COD去除效果的影响。结果表明：电子束辐照技术可有效降低废水中的COD，COD去除率随辐照剂量的增加而不断升高，相同辐照剂量下COD去除率随废水初始浓度的升高而降低，辐照降解规律符合准一级动力学方程。废水最佳pH=5，且不同初始pH的废水经辐照后，水样pH均随辐照剂量的增加而不断降低，主要由产生的小分子有机酸所致。较高的无机离子浓度会导致COD去除率降低。
宋旺旺 +4 more
doaj +2 more sources
Zhongguo shiyan zhenduanxue, 2018 目的通过对低剂量CT窦道造影扫描与常规CT扫描的辐射剂量、图像质量及病灶的显示情况的对比研究,探讨低剂量CT窦道造影扫描在臀部窦道中的应用价值。方法搜集2012年3月至2017年10月在本院诊断为臀部窦道的患者78例,随机分为A、B两组,窦道造影前后均行CT扫描,造影前均采用常规剂量(120kV,200mA)扫描,造影后两组分别采用100mA和50mA的低剂量扫描,其他参数保持一致。通过统计学方法比较低剂量造影扫描和常规扫描的辐射剂量、图像质量及病灶的显示情况等。结果 ...
方进智 +4 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The pathogenesis of diabetic foot ulcers is complex, often involving polymicrobial infection and persistent inflammatory responses, which lead to delayed or nonhealing wounds, posing a formidable clinical challenge. Existing photodynamic therapy reagents and traditional treatments generally address only a single pathological aspect, and the ...
Yu Zhang +16 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Defect engineering has been widely demonstrated as an effective strategy for enhancing the activity of OER metal catalysts, among which the introduction of twin boundaries (TBs) has proven particularly efficient. However, single‐type defects offer limited performance enhancement.
Wentao Cai +11 more
wiley +1 more source
, 2005 一种降低汽油烯烃含量保辛烷值催化剂，是由分子筛活性组份，无定型硅铝氧化物和高岭土组成，其中活性组份是由0.5-10％(占催化剂的重量百分比，下同)稀土-ZSM5/ZSM11共结晶分子筛，15-40％稀土Y分子筛组成。复合分子筛与氧化铝，高岭土混合均匀后，喷雾成型，干燥，水蒸汽处理，制得本发明催化剂，具有明显降低汽油烯烃含量，保持汽油辛烷值至少不下降的特点 ...
陈福存 +5 more
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Zhongguo shiyan zhenduanxue, 2020 目的探究吉非替尼对兔膝骨性关节炎的病理特征及相关因子的影响。方法选取雌性新西兰大白兔60只,采用随机分组法将大白兔分为空白对照组、模型组、低剂量吉非替尼组和高剂量吉非替尼组各15只。除15只空白对照组,其他各组大白兔制成骨性关节炎(OA)模型,造模1周后,低剂量吉非替尼组使用4×10-1 mg/kg吉非替尼处理,高剂量吉非替尼组使用8×10-1 mg/kg吉非替尼处理。分别使用蛋白质印记法检测各组大白兔自噬蛋白Beclin1、LC3、p62表达情况;采用免疫荧光检测LC3含量 ...
谢大伟 +4 more
doaj
Functional Ecology, Volume 40, Issue 7, Page 2221-2236, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
wiley +1 more source
, 2000 一种低碳烯烃水合制低碳醇用催化剂，其特征在于：该催化剂由改性的β分子筛和粘结剂组成，改性元素选自La、B、Fe、Ge、Ni、Cr、Co、Cu、Mg、Ca、Sr、Ge中至少一种，粘结剂选自硅溶胶、水玻璃、氢氧化铝、一水薄铝石、高岭土、氢氧化锆、氧化钛、粘土之一种；催化剂组成为（重量百分比）改性元素１—５％，β沸石分子筛４０—８０％，粘结剂余量。本发明对原料纯度无要求，低温活性好，单程寿命长，可反复再生 ...
孙承林 +6 more
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Dehydrogenation Thermodynamic and Kinetic Challenges of Mg‐Ni‐Based Alloy Hydrides
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Solid‐state hydrogen storage stands as a pivotal, safe, and efficient solution for the future hydrogen economy. Among diverse hydrogen storage systems, Mg‐Ni‐based alloy hydrides are recognized as cornerstone materials. However, their practical application is hindered by two core challenges: the high thermodynamic stability of the hydride ...
Jinglan He +6 more
wiley +1 more source
, 2011 本发明属于卷烟材料制备技术领域，涉及一种能有效降低卷烟烟气中CO含量的催化剂及其制备和应用。本发明的降低卷烟烟气中CO含量的催化剂，为过渡金属-锰复合氧化物催化剂，其晶相为α-MnO2相、γ-MnO2相或者二种晶相的混相。本发明的过渡金属-锰复合氧化物催化剂，应用时将其加入醋酸纤维丝束后卷制成的滤嘴，可有效降低卷烟烟气中的CO含量，降低比例为4-11%。本发明的过渡金属-锰复合氧化物催化剂生产成本低，生产工艺简单，催化剂本身性质稳定，能够克服工业生产及销售过程中环境变化带来的影响 ...
刘百战 +6 more
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