Results 61 to 70 of about 27,177 (219)
New Phytologist, EarlyView.Summary The morphology of starch granules is a major determinant of the functional and nutritional properties of starch and is highly variable among cereal species. Much of this morphological variation stems from differences in the spatial and temporal patterns of starch granule initiation in amyloplasts during grain development.
Lara Esch +6 more
wiley +1 more source
[宮崎演習林]B.本年度おこなつた試験調査 : 天然更新に関する研究 [PDF]
(1)植生調査 (2)伐根調査 (3)モミ球果着生状態調査 (4)根系調査目次ページに「no.10 ...
椎葉, 康喜 +2 more
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PEP725: 15 years of driving European and global phenology science
New Phytologist, EarlyView.Summary Phenology – the timing of seasonal biological events – is a sensitive indicator of climate change and ecosystem dynamics. Long‐term, broad‐scale phenological data are crucial for understanding and predicting plant responses to environmental change.
Barbara Templ +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 通过水培试验,研究了在不同Cu浓度处理条件下海州香薷和紫花香薷根系形态和植物各器官铜含量、累积量间的差异。结果表明:低浓度Cu处理(
田生科 李廷轩 彭红云 杨肖娥 李廷强 Ejaz
doaj
針葉樹林および隣接する草地における土壌中の二酸化炭素の生産・輸送過程 [PDF]
, 1999 筑波大学University of Tsukuba博士（理学）Doctor of Philosophy in ScienceTo quantitatively assess the processes of the production and transport of carbon dioxide in soil profiles, and to examine the effect of vegetation on the processes, the temporal and spatial ...
34920, Hamada, Yohhei, 濱田, 洋平
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Decoding Paradoxes in Digital Government: Strategies for the Pursuit of Public Value
Public Administration, EarlyView.ABSTRACT This study aims to analyze the complexities of paradoxes in digital government. Through a focused analysis of 34 selected articles, adhering to PRISMA guidelines, it codifies seven paradoxes, categorized into “internal governance paradoxes” and “external engagement paradoxes.” These paradoxes arise from conflicting values among governments ...
Yifan Wang, Bing Ran, Liang Ma
wiley +1 more source
On the intersection and derivative bound estimation for triangular Bézier surfaces [PDF]
, 2016 近年来，在CAGD和CAD中，三角Bézier曲面受到越来越广泛关注.它在表示拓扑结构复杂的几何模型时比张量积型Bézier曲面更灵活.因此，它更适合作为复杂几何体的拟合、插值离散数据点的工具.本文我们以三角Bézier曲面为研究对象，针对三角Bézier曲面在求交问题及其有理形式在低阶导矢界的改进两大方面的应用进行了研究.主要成果如下: 1.提出了implicitBézierlinearclipping(IBLC)算法来解决两平面Bézier曲线的交.在研究射线与三角Bézier曲面的求交方法之前 ...
刘颜红
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Coproduction as a Causal Process
Policy Studies Journal, EarlyView.ABSTRACT That many public goods and services are coproduced jointly by government agencies (regular producers) together with clients and citizens (consumer producers) represents a fundamental insight, although it has proven a challenge to define coproduction clearly and to study it rigorously.
Gregg G. Van Ryzin
wiley +1 more source
Shuitu Baochi Xuebao, 2004 以研究植物根系密度、根量及根层土壤剖面特征为基础,以退耕自然生草地和农耕地(横坡玉米 红薯)为对照,对两种果草模式根系提高土壤抗蚀性进行了定量研究。结果表明:土壤的抗蚀性与土体中根系含量密切相关,两种果草模式的根系总长度、根系表面积和根系总生物量都要明显高于自然生草地,而且这些根系指标与土壤抗蚀性呈正相关变化,这与水稳性团聚体和有机质含量与土壤抗蚀性呈正相关变化的趋势一致;果草模式土壤抗分散的能力得到了相当程度的改善,颗粒间团聚程度有了明显提高,土壤团粒结构得到了一定程度的改良 ...
卢喜平 史东梅 蒋光毅 刘立志
doaj
The impacts of habitat heterogeneity of mangroves on mollusks diversity at Dongzhaigang Bay, Hainan [PDF]
, 2016 包括软体动物在内的大型底栖动物是红树林生态系统的重要组成部分，几乎在所有的红树林生境类型中都能够发现它们的存在，其在红树林中占据了重要的生态位，通过穴居、取食等活动改变着红树林有机物循环的物理和化学过程，对红树林生态系统的结构和功能的维持具有非常重要的作用，是红树林生态系统中食物网的重要环节。本文选取了海南省东寨港国家级自然保护区内三个不同地点的红树林从空间尺度方面对其中的软体动物分布进行了研究。此外还比较了不同地点的红树植物群落内软体动物分布的特点。 选择了海南东寨港的湾口(塔市)、中部(后排 ...
章慧
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