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智慧农业, 2023 目的/意义人工智能（Artificial Intelligence，AI）技术已在学术和工程应用领域掀起了研究高潮，在地球物理参数和农业气象遥感参数反演方面也表现出了强大的应用潜力。目前大部分AI技术在地学和农学的应用还是“黑箱”，没有物理意义或缺乏可解释性及通用性。为了促进AI在地学和农学的应用和培养交叉学科的人才，本研究提出基于AI耦合物理和统计方法的地球物理参数反演范式理论。方法首先基于物理能量平衡方程进行物理逻辑推理，从理论上构造反演方程组，然后基于物理推导构建泛化的统计方法 ...
MAO Kebiao +15 more
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Quantitative structure-activity relationship study for quinolones(喹诺酮药物的定量结构-活性关系)
Zhejiang Daxue xuebao. Lixue ban, 2009 喹诺酮类抗菌素是一类重要的抗菌药物.本文对32个喹诺酮类分子进行了 HF/6-31G*水平的结构优化,在优化结构上获得了分子的表面静电势分布,并在此基础上对其统计导出的参数进行了计算,同时计算了反映三维信息的3D-Morse参数,其后,运用多元线性回归方法对喹诺酮分子抑制金黄色葡萄球菌DNA促旋酶(QR-gyrase)活性、人类II型拓扑异构酶(TOPO- II)的抑制活性、以及二者抑制活性之差与分子的结构参数进行了关联.结果表明：分子静电势参数结合三维3D ...
ZHAOWen-na(赵文娜) +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2003 合成了以氟哌酸药物分子和邻菲咯啉为配体的铜(Ⅱ)配合物[Cu(NFLX)(phen)(H2O)]NO3·3H2O(NFLX为氟哌酸,phen为1,10'-邻菲咯啉).记录了在不同状态(固态或溶液)、不同溶剂(CHCl3,Py(吡啶))及不同温度(室温、77 K)下的EPR波谱.在[Cu(NFLX)(phen)(H2O)]NO3·3H2O的溶液中观察到二级效应和弛豫效应,利用自旋哈密顿给予了满意的解释.由低温溶液谱波谱参数计算了配合物的键参数,讨论了成键特性和配合物的稳定性 ...
WANGGuo-ping(王国平) +1 more
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Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2005 利用多元线性回归和偏最小二乘分析方法，研究分子表面静电势参数，VolSurf参数与双十四酰基磷脂酰基胆碱(DMPC)-水分配系数之间的定量结构-性质关系(QSPR)，均得到较好的结果.分子表面静电势参数分析表明化合物分子表面上负的静电势越分散，越倾向于分配在水相中；与水分子的作用越强，越有利于分配在水相中.此外，具有较大体积和偶极密度的分子倾向于分配在弱极性相中.VolSurf参数分析表明大体积的分子易于分配在DMPC中;分子表面亲水区域较大的分子则倾向于分配在水相中 ...
HUGui-xiang(胡桂香) +5 more
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Conservation Biology, EarlyView.Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis +7 more
wiley +1 more source
QSAR studies on indazolyl urea TRPV1 channel antagonists(吲唑脲类辣椒素受体通道拮抗剂的定量构效关系)
Zhejiang Daxue xuebao. Lixue ban, 2010 研究了吲唑脲类辣椒素受体(TRPV1)通道拮抗剂的定量构效关系(QSAR).首先,采用1H-吲唑异构形式,对27个TRPV1通道拮抗剂分子进行了HF/6-31G*水平上的结构优化,在优化结构上进行了5类拓扑指数和分子静电势及其导出参数的计算.运用多元线性回归方法对这些化合物的生物活性与其分子结构参数进行了关联.对所有化合物采用另一异构形式重复上述过程,以探讨互变异构对QSAR建模的影响.结果表明：互变异构对QSAR结果具有一定的影响,采用1H-吲唑异构形式得到的模型,在质量上均高于采用2H-吲唑异构体 ...
SANGPeng(桑鹏) +4 more
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Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, EarlyView.Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman +6 more
wiley +1 more source
Gongye shui chuli, 2021 基于电磁超声预催化Fenton技术在天津某综合工业园区污水处理厂的工程应用，开展了四种关键工艺参数（过氧化氢、硫酸亚铁、硫酸和氢氧化钠的投加量）的关联性特征研究。分别开展了参数年度特征分布，参数间的相关性分析，以及COD去除与参数之间的定量关系评估。研究结果表明：硫酸亚铁、过氧化氢及氢氧化钠三者投加量相关性较高；在一定范围内，有机物去除量随过氧化氢和硫酸亚铁增加而线性增加，其线性相关度在0.9以上。
邓林 +5 more
doaj
Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca +23 more
wiley +1 more source