Results 41 to 50 of about 10,132 (156)
Jingshui jishu【目的】本文旨在系统综述放射性水污染的现状，并深入探讨吸附法、膜分离法、光催化法、电化学法及生物富集法等主流新兴处理方法，以期为开发高效、经济的放射性废水处理技术提供理论参考与实践指导。【方法】本文通过系统梳理现有研究，重点分析了多种主流处理技术的原理、材料特性与应用特点；详细阐述了吸附法中碳基材料、硅基材料、金属氧化物/硫化物和高分子聚合物等吸附剂的性能及其吸附模型，并评估了纳滤、反渗透、正渗透等膜分离技术的效能与规模化应用潜力；还探讨了多种技术联用的协同效应与系统优化策略 ...
Huang Kun, Zheng Yihong, Jia Daqing
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New Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
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Zhongguo shiyan zhenduanxue, 2009 目的探讨乙型肝炎病毒（HBV）相关性肾炎临床病理特点。方法分析17例HBV相关性肾炎的临床表现及肾活检病理、免疫荧光和超微病理特点。结果17例HBV相关性肾炎临床表现以肾病综合征最常见10例（58.82%）,肾炎综合征7例（41.18%）。病理类型多样化,其中膜性肾病（MN）8例（47.06%）,系膜增生性肾炎（MsPGN）7例（41.18%）,系膜毛细血管性肾炎（MPGN）1例（5.88%）,IgA肾病（IgAN）1例（5.88%）。免疫荧光检查5.88%的病例呈"满堂亮"现象 ...
孙珉丹, 耿兴花, 王欣, 金明华
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Shuitu Baochi Xuebao, 2022 为阐明黄淮海平原滴灌条件下施氮对不同高产冬小麦品种的调控机理,明确高产高效优质的施氮方式,以高产品种济麦22和烟农1212为试材,于2018—2020年2年间在大田滴灌条件下设置0,150,210,270 kg/hm2 4个施氮水平(济麦22用J0、J1、J2、J3;烟农1212用Y0、Y1、Y2、Y3),研究不同施氮量对滴灌冬小麦光合生理特性、籽粒灌浆特性、产量和品质的影响。结果表明:施氮可显著提高冬小麦上三叶的SPAD值,适量施氮显著提高了灌浆中后期的SPAD值和旗叶净光合速率(Pn ...
曲文凯 +8 more
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Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
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Shuitu Baochi Xuebao, 2017 旨在通过改变生物质炭在植烟土壤中的施入量，明确优质烤烟在生产环节的根系发育、叶片光合特性及地上和地下部分协调生长的生理指标，以改善东北植烟区烤烟品质较差的现状，于2015—2016年采用大田试验方式，设置6个处理（CK、T1、T2、T3、T4、T5），与当地常规施肥相比，各处理氮肥施入量均减少40%，分析不同生物质炭用量对烤烟旺长期根系生理指标与叶片光合生理指标的影响。结果表明，烤烟烟株在旺长期根系发育状况与光合生理指标、叶绿素含量、叶面积系数的状况是协调一致的；施用生物质炭2 400 kg ...
王欢欢 +7 more
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The enigmatic life history of the bamboo explained as a strategy to arrest succession
Ecological Monographs, Volume 94, Issue 4, November 2024.Abstract Bamboos are perennial woody grasses that display an enigmatic mix of traits. Bamboo is highly shade intolerant like early‐successional trees. Without secondary xylem, bamboos cannot continue to grow once they reach a maximum height or replace xylem damaged by hydraulic stress and must instead replace each stem after a few years using ...
Aiyu Zheng, Stephen W. Pacala
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Shuitu Baochi Xuebao, 2017 为阐明紫金牛属植物在镉胁迫下的生理响应，比较2种紫金牛属植物抗逆性强弱，通过水培试验，研究了不同浓度镉(0，0.025，0.05，0.1，0.2，0.4 mol/L)对2 a生扦插苗虎舌红和朱砂根株高、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性、脯氨酸(Pro)、叶片丙二醛(MDA)含量、光合特性及荧光特性等生理指标的影响。结果表明：(1)镉胁迫处理后，朱砂根和虎舌红的株高、SOD、POD以及CAT活性均有不同程度的上升，但随着处理时间的延长 ...
张建新 +5 more
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Zhongguo shiyan zhenduanxue, 2020 青光眼睫状体炎综合征简称青睫综合征,1948年最先由Posner和Schlossman描述并命名[1],也称Posner-Schlossman综合征(PSS),是青光眼和非肉芽肿性前葡萄膜炎兼有的疾病,同时具有前葡萄膜炎和原发性开角型青光眼(POAG)的病理学特征。好发于20-50岁的青年男性,以单眼发病为主,房角开放,眼压升高反复发作。一般认为PSS能自行缓解,预后良好,但是病程长、眼压波动大、反复发作的患者也可产生视功能损害。了解该病的病因,
黄婧, 石小佳, 张文松
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Global status, impacts, and management of rocky temperate mesophotic ecosystems
Conservation Biology, Volume 38, Issue 1, February 2024.Abstract The ecology and function of rocky temperate mesophotic ecosystems (TMEs) remain poorly understood globally despite their widespread distribution. They typically occur at 20–150 m (the limit of photosynthesis), and on rocky substratum they support rich benthic communities and mobile fauna.
James J. Bell +5 more
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