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鸟类生理学是研究鸟类生活机能、机能变化和反应的科学。主要是应用化学和物理学手段,特别是生物化学和生物物理学方法。近代,由于科学技术的不断发展,鸟类的消化生理、呼吸生理、循环生理、水和盐调节等方面的研究进展较快。
许维枢
doaj
The Ecophysiological Effect Research of Heavy Metal Cd on Mangrove Species Bruguiera gymnorrhiza Seedlings [PDF]
采用砂基栽培,研究红树植物木榄(Bruguieragymnorrhiza)在不同Cd浓度梯度系列和不同暴污处理时间条件下幼苗的萌发生长以及生理生态效应的影响。设置Cd胁迫浓度系列为0.1、0.5、2.5、5、25、50、100mg/L,以不加Cd为对照,培养基海水盐度均为15‰,培养期180d。试验期间,全过程计录及观测各暴污级木榄种苗的萌发及生长状况,定期记录幼苗的高度生长、叶片大小、根系生长、幼苗各组分生物生长量,以及幼苗含水量以及光合生理、抗氧化酶系活性、膜脂过氧化、盐分代谢等指标参数 ...
孙娟
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ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu +4 more
wiley +1 more source
恶性肿瘤因其较高的发病率和死亡率,成为严重威胁人类健康的主要疾病之一。液体活检能够应用于肿瘤的早期诊断、预后监测、复发转移、个体化治疗和疗效评估等方面[1]。液体活检用于检测的生物标志物有:循环肿瘤DNA(circulating tumor DNA,ctDNA),循环肿瘤细胞 ...
杨梅 +5 more
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Stand functional diversity (RaoQ) and stand functional composition in terms of the functional traits of the component species (CWM trait) are critical for ecosystem processes and functioning, such as litter decomposition and associated nutrient cycling.
Bai‐Yu Yang +12 more
wiley +1 more source
Rhizosphere Soil Nutrient and Enzyme Activity in Different Stand Age of Casurina equisetifolia Protection Forest [PDF]
在福建省东山县滨海沙地,开展了不同年龄木麻黄林地根际和非根际土壤养分和酶活性的测定,研究结果表明:(1)不同年龄木麻黄林地根际pH小于非根际土壤,随林龄增长根际土壤和非根际土壤pH值均表现为下降趋势;根际土壤有机质、全氮和水解氮含量高于非根际土壤,各土层有机质含量在中龄林时最大;从中龄林阶段至过熟林,水解氮含量下降;全磷和速效磷含量从幼林发育至中龄林、近熟林逐渐减少,至过熟林略有恢复;根际土壤全钾、速效钾含量呈增加趋势。(2)不同年龄木麻黄林地根际CEC值、水解性总酸度、交换性盐基总量、交换性M g2 ...
侯杰 +5 more
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ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
从城市生态系统分析入手,阐述了城市生态系统内涵、特征及其平衡的基本原理,在参考国内外相关资料基础上探讨城市生态系统的规律,指出城市生态系统是高度人工化的脆弱生态系统.其所需的物质循环、能量循环,乃至粮食供应都需要依赖外地补给,应变能力差。人类应当研究城市生态系统的特征,并运用科学的理念,防止城市生态系统失调,以至建立新的生态平衡,创造出良好的人居环境。并且有针对性地探讨了城市生态系统的平衡及其调控机制。
姜乃力
doaj +2 more sources
INTERANNUAL DYNAMIC of LITTER FALL of Kandelia Candel MANGROVE AND ENERGY FLOW THROUGH THE LITTER IN JIULONGJIANG ESTUARY, FUJIAN PROVINCE,CHINA [PDF]
福建九龙江口红树林生态系统研究的一个主要部分。通过对秋茄红树群落凋落物进行为期11A(1982~1992年)逐月连续测定。结果表明:凋落物产量年际波动在651.2~1108.6g/M2A,11A平均为862.9g/M2A,其中,叶占总量的63.3%,枝15.9%,果15.3%,花5.5%。不同年份凋落物量变化率(r)为1.7。1年中凋落物量以夏季>秋季>春季>冬季。凋落物能流量达12702~21664kJ/M2A,年际均值为16832kJ/M2A,其中春季3847,夏季6557,秋季4214 ...
卢昌义, 林鹏, 郑文教, 郑逢中
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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

