Results 11 to 20 of about 501 (114)

Defoliation and fertilisation differentially moderate root trait effects on soil abiotic and biotic properties

open access: yesJournal of Ecology, Volume 111, Issue 12, Page 2733-2749, December 2023., 2023
Our results indicate that defoliation and fertilisation, two common grassland perturbations, have contrasting impacts on root traits of grassland plant species, with direct and indirect short‐term consequences for a wide range of soil abiotic and biotic properties that underpin ecosystem functioning.
Yan Liu   +2 more
wiley   +1 more source

离子液体固定化材料在固相萃取中的应用研究进展

open access: yesSe pu = Chinese journal of chromatography, 2021
离子液体是由阴、阳离子组成的低温熔融盐,几乎没有蒸汽压,具有稳定性好、溶解能力强、结构可设计、导电性好等优良性能。离子液体作为一种广受关注的新型“绿色溶剂”,具有代替传统有机溶剂的潜力,其制备方法和应用范围研究日趋完善和多样,已广泛应用于催化化学、光电化学、材料化学和分析化学等领域。离子液体通过功能化导向设计后,可以将羟基、氨基、羧基、氰基等活性基团键合在离子液体结构上,促使其更加易于与目标分子通过生成π-π键、氢键、离子键和范德华力等而产生相互作用,更加易于发生固定化反应 ...
Yicong Wang, Leilei Liu
semanticscholar   +1 more source

Carbon, Nitrogen and Phosphorus nutrients and stoichiometric characteristics of reclaimed soil aggregate in coal mining subsidence land [PDF]

open access: yes, 2022
In order to clarify the nutrients and stoichiometric changes of soil aggregates in different forest types, reveal the soil nutrient retention and limitation characteristics of coal mining subsidence land, and then screen out the best reclaimed-forest ...
Jing ZHAO   +3 more
core   +1 more source

用于眼内药物递送的有机纳米载体研究

open access: yesZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences, 2023
眼睛特殊的解剖和生理学结构形成多种生理障碍和清除机制,导致眼内药物递送严重受阻。有机纳米药物载体具有多种优异的理化以及生物特性,赋予药物颗粒以良好的黏附性、渗透性、靶向改性和控释能力以及优越的生物相容性,能够有效克服眼睛的多重障碍,显著提高药物的递送以及利用效率。固体脂质纳米载体能够将活性组分包载在脂质结构中,在提高药物稳定性的同时大大降低了生产成本;脂质体可以转运疏水或亲水分子,包括小分子药物、蛋白质和核酸等;相较于线性大分子,树枝状大分子具有规整的结构和明确的分子量及分子尺寸 ...
Wan-Ru Chang   +3 more
semanticscholar   +1 more source

Erosive Rainfall Thresholds for Five Typical Soils in Water Erosion Region of China [PDF]

open access: yes, 2022
[Objective] The practical thresholds separating erosive from non-erosive rainfall events were determined to effectively reduce the workload of soil erosion prediction, and to provide references for regional soil erosion prevention.
Liu Baoyuan   +3 more
core   +1 more source

Relationship Between Land Use Carbon Balance and Human Activity Intensity in Tuojiang River Basin [PDF]

open access: yes, 2023
[Objective] The synergistic relationship between land use carbon balance and human activity intensity were studied in order to provide a reference for regional collaborative carbon emission reduction planning in the Tuojiang River basin, and thereby meet
Gao Xuesong, Wang Qi, Zhang Wenying
core   +1 more source

Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area [PDF]

open access: yes, 2023
[Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources ...
He Xuyang   +7 more
core   +1 more source

Characteristics of Erosive Rainfall and Its Effects on Runoff and Sediment Yield in a Low Mountain and Hilly Area of Lianyungang City [PDF]

open access: yes, 2022
[Objective] The effects of different rainfall characteristics and different underlying surface conditions on soil erosion and sediment yield were determined in a low mountain and hilly area of Lianyungang City, Jiangsu Province, in order to provide a ...
Cheng Jianmin   +3 more
core   +1 more source

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

Characteristics of Changes in Factors Influencing Wind Erosion and Erodibility of Soils in Mu Us Sandland During Desertification Reversal [PDF]

open access: yes, 2023
[Objective] The influences of the desertification reversal process on soil wind erosion in the Mu Us sandland were studied in order to provide a scientific reference for the prevention and control of wind erosion and for ecological reconstruction in this
Feng Jiaxin   +3 more
core   +1 more source

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