Results 11 to 20 of about 6,666 (151)
ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao +3 more
wiley +1 more source
Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
wiley +1 more source
Research Progress on Nutritional Characteristics, Taste Quality Improvement and Functional Evaluation of Germinated Brown Rice [PDF]
Germinated brown rice (GBR) is a whole grain containing the intact bran and embryo, concentrating most nutrients and functional active compounds. However, the dense fiber structure of the bran hinders the rate and capacity of water absorption and starch ...
REN Chuanying, HONG Bin, ZHANG Shan, YUAN Di, FENG Junran, SHAN Shan, ZHANG Jingyi, GUAN Lijun, LI Bo, HUANG Wengong, LU Shuwen
core +1 more source
于2006年7~8月通过对京西百花山区6种植物群落凋落物的不同分解层次的蓄积量、自然含水率、最大持水率、吸水速度以及有效拦蓄水量进行测定。研究结果表明:凋落物蓄积量油松(Pinus tabulaef ormis)群落最高达到18.5 t/hm2,杂类草凋落物最低只有3.9 t/hm2,同一植物群落凋落物不同层次蓄积量未分解层低于半分解层,自然含水率未分解层低于半分解层,不同层次自然含水率差值最大的青杨(Populuscathayana)凋落物差值为97.1%;同一植物群落凋落物不同层次持水能力 ...
刘尚华 +7 more
doaj +2 more sources
Summary Abscisic acid (ABA) induces stomatal closure, reducing transpirational water loss, a critical adaptation for agriculture under drought. However, ABA is often viewed cautiously as stomatal closure limits CO2 uptake for photosynthesis and growth.
Jinghui Liu +4 more
wiley +1 more source
Summary Seagrasses are important contributors to environmental nutrient cycling in marine ecosystems and can improve water quality by absorbing excess nitrogen (N). However, these ecosystems are vulnerable to human‐mediated pressures, including marine heatwaves (MHWs), particularly those of longer duration. We performed an experiment simulating a 30‐d,
Alissa V. Bass +5 more
wiley +1 more source
Formation and Control of Porous Structure of Acrylate Super-absorbent Resin Micro-spheres and Mechanism Research of Pore-forming [PDF]
高吸水性树脂(SAR)是一类具有高吸水保水性能的高分子材料,已在医用卫生、农林园艺等众多领域扮演重要角色。理想的SAR应具备高吸水能力、高吸水速率、良好的机械强度;多孔性SAR在吸水能力和吸水速率上具有很大优势,已受到广泛关注。国内对多孔性SAR的研究较少,且主要集中于制备方法上,特别集中于水溶液均相聚合上,对多孔性的形成机理没有具体描述,对孔结构的准确控制还有待深入研究。据此,本论文采用反相悬浮聚合法(ISP)制备丙烯酸系多孔性SAR微球,探索微球多孔结构与性能关系 ...
雷光财
core
基于2017—2019年樟树(Cinnamomum camphora)生长季(4—10月)的茎干水、叶片水和土壤水稳定同位素及同期环境因子数据,并结合2019—2021年樟树生长季的蒸腾速率,分析了日间樟树植物水同位素与其影响因子之间的关系,探究樟树在生长季和不同环境条件下吸水深度的变化特征,旨在加深对樟树自身水分利用特征的了解。结果表明:在晴日,樟树蒸腾速率与叶片水δ18O的值在日间高于夜间,茎干水δ18O的值在日间低于夜间。蒸腾速率与叶片水δ18O之间的时滞在8月晴日较5月晴日大,平均时滞为2.32
夏银华 +7 more
doaj
Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li +10 more
wiley +1 more source
在海拔2 500,2 700,2 850,3 000 m的草原上利用Li-6400-09土壤呼吸叶室测定仪测定一个生长季节祁连山排露沟流域放牧草原土壤呼吸速率,分析不同环境条件下土壤CO2释放速率对气候和土地利用的反馈作用。辅助测定地面温度(0 cm、最低温度和最高温度)、地下温度(5,10,15,20 cm)、空气温度、土壤含水量。通过2003-2006年的观测结果表明:(1)土壤呼吸速率有明显日变化规律,7:00-14:00逐渐升高,14:00达到最大值,其值为8.92μmol/(m2.s ...
车宗玺 +4 more
doaj

