Results 51 to 60 of about 11,519 (169)
The Diagnosis of the Ancient Trees of Ficus microcarpa [PDF]
, 2010 通过对鼓浪屿古榕树的普查,选择其健康诊断的生长指标和生理指标,包括当年生枝叶、果实生长状况、叶绿素荧光等,对不同生长势的古榕树进行分析,旨在探讨基于生长指标与生理指标相结合的古榕树的健康诊断方法,为古榕树的养护与复壮提供依据。结果表明,生长指标与生理指标能较一致地指示古榕树的健康状况。因此,可通过生长指标与生理指标相结合的方法诊断古榕树的健康状况。Based on the general investigation and analysis of the ancient trees of Ficus ...
刘海桑 +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He +9 more
wiley +1 more source
Effects of magnesium supplement on the growth and physiology of Bruguiera sexangula [PDF]
, 2012 镁是海水中含量仅次于钠的阳离子，红树植物镁含量及红树林生态系统中镁循环速率明显高于相同地区其他生态系统，但镁对红树植物生长和生理影响的研究尚未深入。为此，本文以海莲（Bruguierasexangula）为实验材料，主要开展了2个方面的实验：采用砂培方式研究钠和镁两种盐分以及不同供镁水平对海莲胚轴萌苗、生长和生理的影响；采用土培方式研究淡水和盐水（10‰氯化钠）条件下不同供镁水平对海莲植株生长和生理的影响。研究结果如下： 采用砂培研究结果表明 ...
陈顺洋
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The impact of dopamine on the photosynthetic performance and quality of Shine Muscat grape in the Hexi Corridor of Gansu province [PDF]
[Objective] The Hexi Corridor region in Gansu Province experiences high temperatures in summer, cold and cool conditions in autumn and winter, scarce rainfall, barren soils, and varying degrees of salinization, which can lead to early yellowing and ...
CHEN Yajuan +5 more
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source
Guangtongxin yanjiu, 1983 由于光纤心线是由石英材料和塑料复合而成的,其特性容易随环境温度改变。当塑料材料的机械特性和物理性能随温度变化时,改变了光纤本身的机械特性和传输特性,使得光纤心线损耗在低温和异常高温条件下都大于室温时的值。本文主要介绍一年四季的自然气候变化对光缆传输特性的影响,同时给出了一年多耒我们对480米试验光缆在各种自然气候条件下实际测量的实验教据,最后分析讨论了测量结果。
朱四池
doaj
Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth [PDF]
[Objective] To study the effects of brackish water irrigation on soil water and salt characteristics and crop growth is helpful to guide the safe utilization of brackish water.
CHENG Yu +7 more
core +1 more source
Fetoscopic laser ablation vs standard management for Type‐II and Type‐III vasa previa
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 320-328, March 2026.ABSTRACT Objective The standard management (SM) for vasa previa (VP) includes antepartum inpatient admission at 28–32 weeks' gestation followed by Cesarean delivery at 34–37 weeks. Case reports and case series have reported on fetoscopic laser ablation (FLA) as an alternative management approach for Types‐II and ‐III VP.
S. Backley +11 more
wiley +1 more source
, 2018 光是人、动物和植物赖以生存的基本条件。光环境作为一种物理环境因素,其生物效应具有十分重要的理论和应用价值。光环境对人的生理、心理及行为产生重要影响,对动物昼夜节律、定位系统和生长繁育的影响也已受到诸多关注;同时,光是植物赖以生存的基础,是植物一切生化反应的能量来源。综述了光环境生物效应的研究进展,指出已有的文献仅限于以复色光为研究对象,对特定波长的光效应、光暴露时间及光质效应的研究甚少。进一步阐明目前光环境模拟实验装备的研制所遇到的关键\"瓶颈\"是缺乏能够在一定波长范围内输出较高功率的单色光光源 ...
唐超 +6 more
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