Results 41 to 50 of about 579,974 (159)
We comprehensively evaluated the seed plant diversity of Jiangxi province to address the regional biodiversity conservation of Asian subtropical evergreen broad‐leaved forests (EBLFs). Higher species diversity of seed plants was observed in eastern, southern, and western Jiangxi, with elevation and precipitation as mainly environmental factors.
Minqin Duan +8 more
wiley +1 more source
ABSTRACT Esophageal squamous cell carcinoma (ESCC) remains associated with frequent local recurrence and distant metastasis despite advances in radiochemotherapy and immunotherapy, highlighting the need for therapeutic strategies that improve both local tumor control and systemic antitumor immune responses.
Dongdong Wang +7 more
wiley +1 more source
VO2 Hollow Nano‐Reactor: Enabling Near‐Room‐Temperature and Ultrafast Hydrogen Release From α‐AlH3
ABSTRACT α‐phase aluminum trihydride (α‐AlH3) is a promising high‐capacity hydrogen storage material, but its practical application is limited by slow dehydrogenation kinetics and high reaction temperatures. This study demonstrates, for the first time, effective modulation of the hydrogen release kinetics of AlH3 by employing a hollow nanostructured ...
Haoyuan Zheng +8 more
wiley +1 more source
ABSTRACT The escalating severity of global environmental pollution necessitates the development of sustainable and efficient adsorption materials. Nanocellulose (NC), sourced from the most abundant natural polymer on earth, has shown great potential in this field due to its renewability, biodegradability, and exceptional nanoscale properties.
Yaqian Yu +5 more
wiley +1 more source
降水是全球水分和能量循环中关键的气候要素。降水量是水分循环、水资源评价、气候分析、水文模型等计算和研究中非常重要的输入参数。因此获得高分辨率、高精度的降水数据具有重要的意义。在我国西部地区,尤其是地势复杂,海拔较高的天山山区,水文气象观测站点稀少,站网密度远远不能满足流域水文模型的应用需求。目前,遥感技术可以提供在空间上连续分布的降水资料,其中TRMM遥感数据应用广泛,已成为研究降雨变化的一种重要手段。但其空间分辨率较低,数据精度相对不高,对遥感降水数据进行降尺度和校正,能够有效解决该问题 ...
李慧
core
摘 要:在全球气候变化背景下,我国黄土高原的降水格局将呈现出季节波动增强和极端降水事件增加的趋势。土壤水分是黄土丘陵区的主要限制因子,降水变化所引起的土壤水分的改变必然对该区生态系统的结构和功能产生显著的影响。选取黄土丘陵区退耕草地为研究对象,连续定位观测自然恢复小区不同降雨梯度下(0,±20%,±40%,±60%, ±80%)土壤水分动态变化,研究土壤水分变化特征及其对降水变化的响应。结果表明:(1)随年内季节性降水变化 ...
杜好田, 李冬冬, 姚静, 方昭
core +1 more source
ABSTRACT Cisplatin‐related acute kidney injury (CP‐AKI) is a serious complication of cisplatin (CP) treated patients with cancer with high morbidity and mortality rates. It is directly related to the abnormal accumulation of CP in renal tubular epithelial cells, causing metabolic toxicity, DNA damage, and oxidative stress.
Minghe Jiang +12 more
wiley +1 more source
依据我国北方荒漠区35个站点1951—2005年月降水资料及NCEP/NCAR再分析资料,运用降水集度、游程检验、功率谱、Morlet小波分析、Mann-Kendall秩次相关及气候趋势系数等方法,分析了北方荒漠地区降水在年内,年际和年代际几种时间尺度的变异规律及其变化趋势,探讨了同期该地区上空大尺度环流异常对当地降水时空分布及变化趋势的影响。结果表明:我国北方荒漠区降水存在5a、9a及准14a主周期,1988年以来以9a及14a周期为主;降水年内分配的差异趋缓,年际波动呈增加趋势。年代尺度下 ...
梁川, 吴安琪, 徐利岗, 周宏飞
core
目的为识别多源数据融合方法在区域高精度降水数据构建中的适用性。方法以塔里木河流域为研究区,对比了4种机器学习方法(随机森林、支持向量机、XGBoost及回归树)对区域多源融合降水模拟的效果差异,探讨不同卫星降水融合源(GPM IMERG-v06(简称GPMv06)和GPM IMERG-v07(简称GPMv07))及考虑NDVI对降水响应的滞后性对融合模型精度的影响。结果GPMv06和GPMv07均呈高估低海拔降水、低估高海拔降水的特征。与GPMv06相比,GPMv07夏冬季节的降水精度均有提升 ...
王晓燕 +5 more
doaj +2 more sources
降水是荒漠草原生态系统重要的水分来源,也是不同时空尺度上各种生物过程的重要驱动因子。为了解荒漠草原土壤水分对降水的响应,以3种典型土地利用方式(天然草地、灌木地和沙地)为研究对象,研究荒漠草原降水事件对不同土地利用类型土壤水分的影响。结果表明 ...
陈林, 宋乃平, 杨新国, 李学斌
doaj

