Results 21 to 30 of about 19,463 (115)
World Medical &Health Policy, Volume 18, Issue 3, September 2026.ABSTRACT Confrontational violence still puts catastrophic burdens on children, with 2024 being the highest recorded levels of displacement, malnutrition, injury, and deprivation in contemporary humanitarian history. Children's surgical care is still grossly underrepresented in health responses worldwide in the prevention of avoidable deaths and long ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2002 中国南方地下河分布广泛,仅湘、川(渝)、黔、桂、滇、鄂等地就有流量>50L/s的地下河2444条。每一条地下河都构成一个相对独立的系统。因此,运用系统科学的方法开发利用地下河系统是解决南方岩溶区水土资源利用中长期存在的不合理现象的关键。初步分析了地下河系统的水土资源基本特征。山地多,耕地少,山高坡陡,土壤瘠薄,利用方式原始粗糙。降雨在不同的地下河系统中具有显著的时空不均一性,在同一系统的不同部位也存在着差异;地下河对暴雨响应灵敏。在此基础上探讨了地下河系统水土资源的基本格局以及相互关系 ...
谢运球 袁道先
doaj +2 more sources
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The electrocatalytic co‐reduction of CO2 and nitrate (NO3− ${\text{NO}}_{3}^{-}$) to synthesize urea presents a sustainable alternative to traditional industrial processes, yet its efficiency is fundamentally limited by the kinetically mismatched activation and coupling of CO2 and NO3− ${\text{NO}}_{3}^{-}$.
Jiayu Liu +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2007 通过对研究区内多年水质监测资料的分析,查明了昆明盆地浅层地下水中三氮的含量及其分布规律,在此基础上,从地下水污染源、区内的地质环境条件以及地下水开采等方面探讨了地下水中三氮的迁移、转化及其污染机理.最后,指出三氮污染已成为昆明盆地浅层地下水污染的普遍问题,地下水三氮入湖通量在一定程度上对滇池的富营养化发展起了作用.
叶许春 +8 more
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Shuitu Baochi Xuebao, 2023 通过在榆溪河流域沿地下水埋深增大方向设置植被调查样带,基于植被盖度、地下水埋深及土壤含水量等数据,利用多元经验模态分解(MEMD)获取植被盖度及其影响因子所表征的空间尺度,结构方程解析植被盖度空间分布的驱动因素,并结合聚类分析划分了植被群落自然恢复演替空间格局状态变化特征。结果表明:(1) MEMD将空间多元数据分解为3个本征模态函数,经希尔伯特转换得到各模态函数相应的空间尺度分别为14,27,38 km;(2)结构方程模型和MEMD分解后的最大表征尺度相关分析表明 ...
贺军奇 +8 more
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Sexuality, Gender &Policy, Volume 9, Issue 3, August 2026.ABSTRACT Menstrual justice is deeply interconnected with water justice, yet these topics remain largely siloed in policy and research—particularly in Canada, where water access is often assumed to be a non‐issue. However, existing literature reveals that inadequate water and infrastructure significantly affect menstrual hygiene, dignity, and health ...
Emma Cowman +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 为揭示生长在不同地下水埋深和土壤质地的胡杨实生幼苗根系的不同生长适应策略，以胡杨实生幼苗为试验材料，设置30（A1），60（A2），90 cm （A3）3个地下水埋深处理，砂土（B1）、砂壤土（B2）和黏壤土（B3）3种土壤质地处理，研究了塔里木河流域地下水埋深和土壤质地对胡杨（Populus euphratica）实生幼苗根系生长及构型的影响。结果表明：（1）地下水埋深的增加，可促进胡杨幼苗根系形态的发育和根系生物量的积累，胡杨幼苗扎根深度、根系总长度 ...
丁晓雪, 赵成义, 曾勇, 马晓飞
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World Water Policy, Volume 12, Issue 3, August 2026.ABSTRACT Groundwater depletion is a major challenge in semiarid, hard‐rock regions where irrigation demands often exceed natural recharge. This study evaluates the effectiveness of farm‐scale recharge pits as a local, supplementary, and community‐managed groundwater recharge solution in the Dharta catchment of Rajasthan, India. Alongside check dams and
Prahlad Soni +4 more
wiley +1 more source
World Water Policy, Volume 12, Issue 3, August 2026.ABSTRACT Village tank cascade systems (VTCS) are a long‐established form of water management in Sri Lanka's dry zone. However, their role in groundwater recharge, climate adaptation, and water governance remains insufficiently recognized in policy and planning.
Ananthini Nanthakumaran +1 more
wiley +1 more source
Shuitu Baochi Xuebao, 2007 通过室内均质土柱试验,以Br-为示踪剂,研究了90 mm/15 d和30 mm/5 d两种灌水频率下,1.7,1.2,0.8 m地下水埋深土壤中溶质(Br-)的运移规律。结果表明:不同地下水埋深或同一地下水埋深条件下,高、低灌水频率土壤中溶质运移快慢的趋势是变化的。地下水埋深由深变浅,高灌水频率土壤中溶质(Br-)运移由慢于低灌水频率逐渐转变为快于低灌水频率;高灌水频率土壤中Br-较集中地向下运移,低灌水频率土壤中地下水埋深越大,Br-分布越均匀分散;高灌水频率不利于土壤溶质(Br-)积聚于土表。
曹红霞, 康绍忠, 时学双
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