Results 41 to 50 of about 50,870 (171)

色散补偿光纤及其应用前景

open access: yesGuangtongxin yanjiu, 1994
本文从理论上阐述了色散补偿光纤的工作原理和特点。并综述了国外探索实验研究的现状及试用情况。
陈永诗, 邹林森
doaj  

Effect of Lending Behavior on Profitability of Commercial Bank: Based on Empirical Evidence in Financial Marketization [PDF]

open access: yes, 2016
当前在金融市场化背景下,中国商业银行面临着日益激烈的市场竞争格局,银行业经营环境发生较大变化,传统业务面临挑战,长期以来以利差收入为主导的商业银行盈利模式产生较大冲击,使“信贷业务是否以及如何保持持续增长的盈利能力”成为商业银行面临的难题。其中,随着金融市场化改革的不断推进,资本市场和货币市场直接融资功能得到较大发挥,企业的融资渠道更加多样化,许多企业集团通过股权等直接融资方式筹集资金,对商业银行传统信贷业务的需求进一步下降。作为商业银行基础业务,信贷行为的盈利能力效应问题 ...
肖静怡
core  

Trends and Challenges in Water Governance Systematic Review and Bibliographic Study of Scientific Publications (2018–2025)

open access: yesWorld Water Policy, Volume 12, Issue 2, May 2026.
ABSTRACT Water governance has emerged as a critical analytical framework for addressing the complexity of socioecological water systems in contexts of increasing climate vulnerability and anthropogenic pressure. This study presents a systematic review and bibliometric analysis of 50 scientific articles indexed on water governance published between 2018
Roger Pichis‐García   +1 more
wiley   +1 more source

心脏肌钙蛋白Ⅰ:心肌损伤的敏感性和特异性指标

open access: yesZhongguo shiyan zhenduanxue, 1998
心脏肌钙蛋白I:心肌损伤的敏感性和特异性指标朱玉胜综述吕元审校心脏肌钙蛋白I(cTnI)是一项新的心肌损伤的特异性和敏感性指标。本文仅就cTnI在心肌损伤时的变化进行综述,并与CK-MB、肌红蛋白、肌钙蛋白T进行比较。1995年美国FDA批准cTnI...
朱玉胜
doaj  

Study on the Gender Wage Gap in China [PDF]

open access: yes, 2016
自我国首次提出男女平等这一项基本国策以来,我国广大女性的社会地位得到了极大的提高。但我国社会仍面临着男女工资存在巨大差异这一严峻问题。男女工资差异不仅造成了社会不公,引发了社会矛盾,更不利于我国的经济发展,社会的和谐进步。因此,研究中国男女工资差异问题,具有重要的现实意义。 目前学术界关于性别工资差异的研究,视角大多集中在均值或者工资分布的变化上,并且,有关工资差异影响因素的分析大多停留在,剔除性别而单独对因素的讨论上,并没有考虑这些因素对工资的影响是因性别的不同而不同的 ...
李晓雯
core  

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

Single-Factor and Total-Factor Energy Efficiency of Fujian in China [PDF]

open access: yes, 2015
随着世界经济的快速发展,能源需求日益增长,温室气体排放与日剧增,开展国家、区域层面的能源效率研究和能源政策制定已成为全世界的热点。中国提出到2015年单位GDP能耗、碳排放比2010年分别下降16%、17%,到2030年非化石能源占一次能源消费比重提高至20%的目标。在以福建省为主体的海峡西岸经济区跨越式发展的关键时期,传统粗放式发展模式带来了能源“消费大省”和“生产小省”的矛盾日益突出,本文在这样的选题背景下研究中国福建能源效率,对实现福建省乃至全国的经济、社会、能源 ...
汪叶俊
core  

Recent Advances in Piezocatalysis and Piezo‐Photocatalysis in Energy and Environment: Materials, Design, and Applications

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou   +5 more
wiley   +1 more source

Long-term Stock Price Performance of China's A-share Listed Companies Following Private Placement [PDF]

open access: yes, 2016
我国资本市场的融资功能在股权分置改革之后逐渐被恢复。在2006年5月8日我国颁布的《上市公司证券发行管理办法》对非公开发行进行规范之后,定向增发股票逐渐发展成为我国资本市场上主流的再融资方式。其原因在于:第一,定向增发股票能为上市公司筹集资金,帮助提高上市公司的经营业绩;第二,定向增发股票可以在并购重组中发挥作用,缓解购买资产的资金压力,避免公开竞价,降低交易成本;第三,大股东及关联股东可以通过定向增发股票方式向上市公司注入优质资产,以提高上市公司的资产质量和盈利能力,从而增加股东的财富;第四 ...
刘翩翩
core  

A Review on Cracking in Laser Additive Manufacturing of Nickel‐Based Superalloys: Types, Formation Mechanisms, and Suppression Strategies

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin   +9 more
wiley   +1 more source

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