Results 1 to 10 of about 11,179 (112)

Fatty acid β‐oxidation and mitochondrial fusion are involved in cardiac microvascular endothelial cell protection induced by glucagon receptor antagonism in diabetic mice 脂肪酸β‐氧化和线粒体融合参与胰高血糖素受体拮抗剂对糖尿病小鼠心脏微血管内皮细胞的保护作用

open access: yesJournal of Diabetes, Volume 15, Issue 12, Page 1081-1094, December 2023., 2023
Highlights Glucagon receptor (GCGR) monoclonal antibody (mAb) improves cardiac function and attenuates microvascular damage in db/db mice. GCGR mAb ameliorates the oxidative stress of cardiac microvascular endothelial cells in diabetic mice. GCGR mAb counteracts the diabetes‐induced upregulation of carnitine palmitoyltransferase 1B, optic atrophy type ...
Peng Wang   +6 more
wiley   +1 more source

连续失水-复水中不同粒径保水剂对土壤结构和水分特性的影响

open access: yesShuitu Baochi Xuebao, 2021
为明确土壤干湿交替环境下保水剂与土壤颗粒之间的作用方式及保水剂对土壤结构和水分有效性的影响。通过土柱模拟试验,研究连续失水—复水条件下,不同粒径(>0.85,0.6~0.85,0.30~0.45 mm)保水剂对土壤水分特性、土壤团聚体分布和结构稳定性的作用,以及保水剂—土壤混合体价键结构的微观变化特征。结果表明:第1次(T1)和第2次(T2)失水取样阶段,除T2阶段的最小粒径处理外,其余各粒径保水剂促使土壤相对含水量较对照显著增加72.9%以上 ...
纪冰祎   +5 more
doaj  

施用保水剂对花岗岩红壤坡面侵蚀过程的影响

open access: yesShuitu Baochi Xuebao, 2021
南方花岗岩普遍存在红壤颗粒粗、物理特性差、保水保肥能力弱、水土流失严重等问题。为了探讨施用保水剂对花岗岩红壤坡面防治水土流失的作用,通过模拟降雨试验和室内分析试验,研究层施(K1)、沟施(K2)、混施(K3)保水剂和不施保水剂(CT)条件下坡面的侵蚀过程。结果表明:3种保水剂施用方式下,花岗岩红壤坡面初始产流时间较对照坡面延长1.09~1.61倍。坡面入渗率、含水量分别表现为K2>K3>K1>CT和K3>K1>K2>CT;在不同处理方式下,坡面减流率表现为K3>K2>K1,减沙率表现为K2>K3>K1 ...
陈诗婷   +4 more
doaj  

PAAM-atta复合保水剂对土壤持水性及其物理性能的影响

open access: yesShuitu Baochi Xuebao, 2005
以丙烯酸、丙烯酰胺和凹凸棒土为原料,合成了有机无机复合保水剂(PAAM—atta).与丙烯酸和丙烯酰胺聚合保水剂(PAAM)作对比,在室外考察了复合保水剂与纯有机保水剂对土壤物理性质的影响。结果表明.在土壤含水量、pH值、电导率、团粒结构、土壤容重和土壤孔隙度等土壤物理化学性能方面,PAAM—atta复合保水剂的改善效果较纯有机类保水剂明显。
杨红善 刘瑞凤 张俊平 王爱勤
doaj   +2 more sources

凝胶状保水剂使用效果研究

open access: yesShuitu Baochi Xuebao, 2005
保水剂凝胶是一种保证有效使用保水剂的重要措施。在黄土高原半干旱地区最干旱的春季,通过对比试验分析了在沙棘、杏树、梨树等幼树林中不同保水剂凝胶使用方法与使用量对土壤水分及杏树、梨树前期坐果率的影响,表明使用方法与使用量对土壤水分的维持和对果树生长有显著的影响。在试验的保水剂用量范围内(4 5~15 75kg)使用保水剂凝胶后土壤水分明显提高,提高幅度为5 %~4 8%。棒状保水剂凝胶在埋入土壤2 0天后,贮存的水分可在2 5 30cm半径范围内使得土壤水分比对照提高5 %~4 6 % ,在2 ...
王百田 马丰斌 张府娥 史常青 侯青海
doaj   +2 more sources

保水保肥材料对废弃离子型稀土矿区尾砂土壤理化性质及皇竹草生长的影响

open access: yesShuitu Baochi Xuebao, 2023
针对废弃稀土矿区氨氮减低后的土壤结构性差、肥力低下和种植植物生产力低的问题,土壤改良成为快速提升植被恢复的关键。通过田间试验,比较单施不同浓度保水剂(S1、S2、S3)和保水保肥材料(F1、F2、F3)对土壤理化性质、皇竹草生长以及作物耗水和水分利用效率(WUE)等相关指标影响,并运用主成分分析和模糊隶属度函数方法筛选出最佳改良材料。结果表明:(1)保水保肥材料通过改善废弃稀土矿区尾砂土土壤理化性质,促进皇竹草生长,土壤理化性质与植物生长的关系表现为土壤pH和养分含量越高,皇竹草分蘖数、氮磷含量 ...
贺燕子   +4 more
doaj  

Thermite‐Synthesized Fe–Ti–Al–Mg High‐Entropy Intermetallic Compound for Efficient Azo Dye Degradation

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Most high‐entropy alloys (HEAs) tailored for contaminant degradation suffer from complex fabrication processes and high‐cost alloy design. Furthermore, low‐cost active elements such as Fe and Mg cannot be readily alloyed into HEAs via conventional routes.
Jiajia Si   +5 more
wiley   +1 more source

Multi‐Site Chelation Enabled by 3D‐Printed TiO2 Hydrogel Monoliths for Dynamic Ge(IV) Recovery in Fixed Beds

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo   +6 more
wiley   +1 more source

Developmental plasticity drives converge nt shifts in phosphorus acquisition strategies towards root phosphatase activity in Moso bamboo under nitrogen addition

open access: yesFunctional Ecology, Volume 40, Issue 7, Page 2221-2236, July 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li   +11 more
wiley   +1 more source

Synergistic Enhancement of Toluene Catalytic Oxidation via Pt‐Induced Oxygen Vacancies and Heterojunction Built‐In Electric Field

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He   +13 more
wiley   +1 more source

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