Results 41 to 50 of about 56,474 (245)
Influence of Root Secretion Flavonoids on the Biogeochemistry Behavior of Cadmium in Avicennia marina (Forsk.) Vierh Rhizosphere [PDF]
, 2015 红树林生态系统主要分布于热带和亚热带的海岸潮间带，其具有独特的生态学和生物学特性，为污染物的吸附治理提供了最佳场所。然而，近年来，随着工业化、城市化和地区经济的快速发展，导致大量生活污水和工业废水流向红树林湿地，使得红树林生态系统面临越来越严重的重金属污染，从而使得滨海湿地面临着日益严峻的重金属污染。进入红树林湿地的污染物最先在红树植物根际区进行一系列形态转化等过程，而后被植物吸收累积。因此，红树林根际区重金属化学行为已经成为近年来污染生态学的研究热点。 类黄酮是植物体内广泛存在的一类重要次生代谢产物 ...
李健
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Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Photodetectors, based on GaAs nanowires (NWs), hold significant promise in the fields of high integration micro‐ and nano‐optoelectronics applications because of their outstanding electronic and optical properties. To date, significant efforts have been directed toward enhancing the performance of photodetectors, aiming for high detectivity ...
Yu Hao +11 more
wiley +1 more source
Response of stable states of simple marine plankton ecosystems to warming [PDF]
, 2016 温度是影响海洋浮游生态系统结构和功能的关键环境因子。从上个世纪初以来，受到人类排放温室气体的影响，全球海洋平均温度明显升高。但温度影响浮游生态系统变化和浮游生物生物量变动的机制还不明确。本文采用理论模型与实验生态相结合的方法探究温度对简单浮游生态系统稳态的影响，并一同考虑营养盐的输入，得到如下主要结果： 1.建立描绘以亚心形扁藻(PlatymonasSubcordiformis，绿藻)为被捕食者、海洋尖尾藻(Oxyrrhismarina，甲藻 ...
李奕慧
core
Rare Metals, EarlyView.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
wiley +1 more source
油茶籽淀粉的结构与体外模拟消化特性研Structure and digestion property in vitro of Camellia oleifera starch
Zhongguo youzhi为促进油茶籽淀粉资源的开发利用，采用“碱提+酶解”工艺从油茶籽粕中提取油茶籽淀粉，并以市售玉米淀粉和马铃薯淀粉为对照，比较其结构和体外消化特性。结果表明：本工艺所得油茶籽淀粉的提取率为64.25%，纯度为92.66%；与市售玉米淀粉、马铃薯淀粉相比，油茶籽淀粉呈圆球形或椭球形，颗粒更小；油茶籽淀粉为典型的A型淀粉，其长程结构不稳定，相对结晶度更低；油茶籽淀粉的短程有序程度与市售玉米淀粉、马铃薯淀粉相似，但双螺旋度数更低；油茶籽淀粉抗性淀粉含量（16.91%）更高。综上 ...
向敏1，韩小苗1,2，吴苏喜1,2，李万元2，彭邵锋3 XIANG Min1,HAN Xiaomiao1,2,WU Suxi1,2， LI Wanyuan2,PENG Shaofeng3"
doaj +1 more source
近25 a 银川市城市化进程中热力景观格局演变分析 [PDF]
, 2016 ： Based on the Landsat images and statistical data，in this paper the urbanization process and thermal landscape dynamics of Yinchuan City were analyzed． The objectives of this study were as follows: ① To analyze the spatial and dynamic characteristics of
吕荣芳, 张建明, 王浩, 王鹏龙
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Smart Biomaterials and Dressings for the Treatment of Chronic Inflammatory Skin Diseases
Rare Metals, EarlyView.ABSTRACT Chronic inflammatory skin diseases, encompassing immune‐inflammatory conditions and infection‐associated dermatoses, pose significant clinical challenges due to high prevalence, recurrence, and therapeutic resistance, affect over 30% of the global population.
Zehao Lan +5 more
wiley +1 more source
Island Ecosystem Assessment：A Case Study of Baishashan Island in Zhoushan, Zhejiang Province [PDF]
, 2015 我国是海洋大国，岛屿众多，海岛是我国国土的重要组成部分，海岛蕴藏着极为丰富的生物、矿物、能源、港口、旅游、生态环境资源等，海岛地理位置特殊，在维护国家领土完整、维护海洋权益等关系到民族生存与发展等方面具有不可估量的社会、经济、科研、生态和政治及军事价值。近年来，国家高度重视海岛开发与保护，对海洋强国、海洋战略、海洋产业、海洋资源作出了一系列决策部署。 目前我国在海岛开发、保护和管理中存在诸多问题，许多海岛开发是在未开展生态调查，缺乏开发规划的情况下开展的，导致海岛生态系统遭受破坏或生态功能下降 ...
王丰
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Rare Metals, EarlyView.ABSTRACT Transition metal‐based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost‐effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging.
Haoran Li +3 more
wiley +1 more source