Results 51 to 60 of about 13,490 (164)
急性冠状动脉综合征患者血浆B型钠尿肽及超敏C反应蛋白水平的临床分析
Zhongguo shiyan zhenduanxue, 2011 目的探讨急性冠状动脉综合征患者血浆B型钠尿肽（BNP）和超敏CRP（hs-CRP）水平变化及临床意义。方法对32例不稳定型心绞痛（UAP组）、28例急性心肌梗死患者（AMI组）和30例健康人（对照组）进行血浆BNP和超敏CRP水平检测。结果急性心肌梗死患者血浆BNP水平高于不稳定心绞痛组 ...
顾红娟
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Skin wound injuries are often accompanied by bacterial infections and severe inflammation. Especially, M1‐type macrophages at the wound site can trigger a cascade of inflammatory responses, mediating a vicious cycle of inflammation. Meanwhile, hypoxia further exacerbates vascular damage and constriction in the wound microenvironment, thereby ...
Xianfeng Wang +6 more
wiley +1 more source
Performance Research and Infrared Spectroscopy Analysis of Asphalt Concrete with Iron Tailings [PDF]
This is an article in the field of ceramics and composites. The performance of asphalt mixtures with different iron tailings content was analyzed. The rutting resistance, water stability and crack resistance of the asphalt mixture were analyzed.
Heping CHENG, Li WANG, Youtao WANG
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 采用野外调查与室内分析相结合的方法，研究名山地区稻田植茶后土壤团聚体水稳性变化特征及其影响因素。结果表明：稻田及植茶后的土壤水稳性团聚体含量在各粒径及土层间表现不同，稻田、茶园5年和10年土壤水稳性团聚体含量总体上随着粒径的减小呈先降低后上升的趋势，茶园15年水稳性团聚体含量则随着粒径的减小逐渐增加。从不同土层来看，在0—20，20—40 cm土层中，随着稻田植茶年限的增加，土壤团聚体含量以＞2 mm粒径团聚体为主转变为以＜0.25 mm粒径团聚体为主，而在40—60 cm土层中，总体上＜0.25 ...
李欣雨, 夏建国, 田汶艳
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Shuitu Baochi Xuebao, 2023 退耕还林工程是黄土高原控制水土流失的主要措施之一,探讨退耕还林对土壤团聚体稳定性与土壤可蚀性的影响,可为黄土高原地区生态恢复和水土保持效益评价提供科学依据。以农田为对照,选取不同退耕年限(5,10,15,20,25,30年)刺槐林为研究对象,研究退耕还林后0—30 cm土层土壤团聚体稳定性和土壤可蚀性动态变化,并探讨土壤可蚀性与土壤团聚体稳定性之间的关系。结果表明:(1)＞0.25 mm水稳性团聚体含量、平均重量直径、几何平均直径随着退耕年限增加呈递增趋势,三者相比退耕前(农田)分别增加32%~79 ...
范家伟 +3 more
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Insist on the Strategy of Forestry Sustainable Developmnet [PDF]
, 1999 该文分析比较了前人在杉木林和火力楠林两种林分的林冠、枯枝落叶层、土壤结构与肥力、土壤微生物等因素保持水土方面的研究成果,从战略上提出了长泰县林业可持续发展对策。The paper analyzes and makes comparison among the research achievements in water and soil conservation by leaves, defoliation layer,soil structure and fertility, soil ...
史大林, 洪海征, 黄璜
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Response Characteristics of Soil Saturated Hydraulic Conductivity after Returning Orchard to Farmland on the Loess Plateau [PDF]
[Objective] To explore the change rule and influencing factors of soil saturated hydraulic conductivity (Ks) after returning orchard to farmland. [Methods] Aging apple orchards (AO) and orchards with different tillage years (2 a, 4 a, 6 a, 10 a) on the ...
JIA Xiaoxu +6 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 为探究大气氮沉降增加导致的土壤团聚体结构变化规律及其对土壤水分入渗性能的影响,在贡嘎山针叶成熟林和中龄林内分别设计2种氮肥形态[(NH4)2SO4、KNO3]和4个浓度水平(0,10,20,40 kg/(hm2·a)N)的添加试验,研究不同形态大气氮沉降对亚高山森林土壤团聚体结构和土壤水分入渗特征的影响。结果表明:(1)随施氮量增加,中龄林土壤大团聚体含量逐渐增加,土壤持水量、孔隙度和水分稳定入渗率逐渐增大;成熟林土壤大团聚体含量、土壤持水量、孔隙度和水分稳定入渗率均表现出先增加后降低的趋势;(2 ...
郭海云, 王根绪, 孙守琴
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