Results 41 to 50 of about 167,960 (336)
A framework linking silicon fertilisation, plant silicification and soil carbon cycling
PLANTS, PEOPLE, PLANET, EarlyView.Soil organic carbon (SOC) is vital for soil health, food security, and climate change mitigation. We reviewed how silicon (Si) fertilisers, commonly used to improve plant health, may also influence SOC dynamics. We developed a framework linking Si and SOC and discussed the possibility of Si‐mediated plant changes contributing to SOC sequestration.
Xuqing Li +2 more
wiley +1 more source
The retinol-retinoic acid metabolic pathway is impaired in the lumbar spine of a rat model of congenital kyphoscoliosis [PDF]
, 1976 学位記番号 ...
園田, 裕之 +2 more
core +2 more sources
Investigation of Research Method for Raman Spectroscopy and Microfluidics on Yeast Cell [PDF]
, 2015 酿酒酵母细胞是真核细胞研究的模式生物之一，本论文以酵母细胞为研究对象，开展适用于酵母细胞的微流控芯片及拉曼光谱方法研究，具体的研究内容如下： 1.拉曼检测过程中要求酵母固定不动，而酵母细胞由于具有较硬的细胞壁，形状呈椭球形且不易变形，在芯片上固定是个难题。在初步摸索酵母细胞生长特性的基础上，提出两种在芯片上固定酵母并制备酵母细胞阵列的方法：其一，基于PDMS微柱制备酵母细胞阵列，在微柱表面捕获酵母细胞，通过调节微柱尺寸与间隔，可以很容易地控制微柱上酵母细胞的数量，当微柱尺寸足够小时，能够获得单细胞阵列 ...
张维
core
Harnessing entomopathogenic fungi: A meta‐analysis on their role as plant growth promoters
PLANTS, PEOPLE, PLANET, EarlyView.Our meta‐analysis highlights the potential of entomopathogenic fungi (EPF) as sustainable alternatives to chemical pesticides and fertilisers. By promoting plant growth and reducing reliance on agrochemicals, EPF can support healthier crops, minimise environmental contamination and improve profitability within food production systems.
Luke A. Crosby +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2015 冷弯薄壁型钢组合墙体立柱与导轨间不可避免地存在间隙,并可能对墙体立柱性能产生影响。考虑初始缺陷、材料非线性和几何非线性,应用有限元分析法研究立柱-导轨间距对墙体立柱轴压承载力和屈曲模态的影响。研究表明,随着立柱-导轨间距的增加,立柱轴压承载力不断降低,屈曲模态逐渐趋向于整体屈曲,提出了满足立柱承载力和美观要求的立柱-导轨间距限值;进而以立柱-导轨间距为限值的组合墙体为典型组合墙体,研究钢材强度、覆面板厚度和强度对其立柱轴压承载力的影响。分析表明:钢材强度 ...
刘涛, 郭成喜
doaj
Jianzhu Gangjiegou Jinzhan, 2021 为研究不同梁柱节点构造形式对中心支撑框架抗震性能的影响,完成了4个1层1跨的中心支撑框架试件的拟静力试验,研究参数分别为:柱截面形式、梁柱连接方式、梁柱刚度比。试验结果表明:梁柱节点处构造措施的改变,使各试件的局部损伤也存在着差异;各试件的水平力-层间位移角滞回曲线均为S形,箱形柱截面的开裂与梁柱铰接连接会导致滞回曲线有一定程度的捏拢;当柱截面形式为箱形柱时,节点板附近的柱发生局部破坏,框架分担水平力降低;由于节点板的存在,梁柱间的铰接节点近似为半刚接,框架分担水平力降低,但并不影响支撑充分发挥其性能 ...
崔瑶 +4 more
doaj
“Æ e trønder, æ, sjø!” Den pragmatiske partikkelen sjø i midt-norske dialektar
Norsk Lingvistisk Tidsskrift, 2018 Sjø er ein pragmatisk partikkel som har sitt primære bruksområde i trønderske dialektar. Med utgangspunkt i spontantaledata frå Nordisk dialektkorpus analyserer vi bruken av sjø både geografisk, semantisk og pragmatisk. Ved hjelp av det relevansteoretiske rammeverket forklarer vi korleis semantikken til sjø kan gi opphav til ulike kommunikative ...
Søfteland, Åshild, Borthen, Kaja
openaire +3 more sources
Chemical constituents from Wedelia prostrata and their cytotoxicity activity [PDF]
, 2016 卤地菊（Wedeliaprostrata（Hook.etArn.）Hemsl.）为菊科蟛蜞菊属植物。对蟛蜞菊属植物研究调查表明，其主要含有二萜，倍半萜，黄酮和有机酸等化学成分。二萜尤其是对映-贝壳杉二萜类是蟛蜞菊属植物的主要活性成分，具有抗菌、抗病毒、抗氧化、抗癌、抗血管生成等生物活性。 本文首先用石油醚、乙酸乙酯、正丁醇三种不同极性的溶剂依次对卤地菊的乙醇提取物进行萃取，初步得到三个萃取部位，对卤地菊石油醚部位进行系统的化学成分研究，采用硅胶柱层析、聚酰胺柱层析、葡聚糖凝胶柱层析 ...
林剑虹
core
Chloroplast genome diversity and phylogenetic insights of Saccharum spontaneum across Southeast Asia
PLANTS, PEOPLE, PLANET, EarlyView.Climate change and threats to global food security have increased the urgency of conserving genetic resources in key crops like sugarcane. In this study, we analyzed the chloroplast genomes of wild sugarcane to assess their genetic diversity and population structure. We found a high level of diversity, regardless of geographic location, and patterns of
Sicheng Li +8 more
wiley +1 more source
, 2023 Det har de siste årene skjedd flere store endringer i norske barnehager. Barnehager har gått fra å være et omsorgstilbud til å gå i retning av å være en læringsarena for barn. Omsorg står enda helt sentralt i barnehagen, samtidig som læring, danning og demokrati stadig får en større plass (Jansen, 2016, s. 23).
openaire +1 more source