The influence of rock mechanical properties on the electromagnetic radiation(EMR)mechanism of rock fracturing is an important research topic in solid mechanics and earthquake prediction.In this study,an EMR model of rock fracturing considering the fractur
As a potential engineered barrier material for disposal of radioactive waste in clay formations,claystone aggregate excavated from the Opalinus clay(OPA),its mixture with bentonite MX80 in a mass ratio of 7/3,and pure bentonite were extensively investigat
基于2015—2016年福建、广东青枣主产区田间试验的62个鲜果样本主要品质要素,采用相关分析、加权指数求和法,结合文献查阅、专家调研以及常规农业气象条件定量化等级评价标准,筛选影响青枣品质的关键气候因子,构建青枣气候品质等级评价模型,并利用2014—2019年青枣产区36个独立样本进行验证,分析福建主产区青枣气候品质时空分布规律。结果表明:影响青枣品质的3个关键气候因子分别为采收前90 d平均气温、采收前30 d气温日较差和采收前30 d日照时数,模型准确率达86.1%,青枣气候品质等级评价模型可客观反
采用增强型脂质去除吸附剂(Enhanced Matrix Removal-lipid,EMR-Lipid)对样品进行净化,结合超高效液相色谱-串联质谱(UPLC-MS/MS)检测,建立快速测定动物源性食品中5种α2-受
以东北春大豆为研究对象,分早熟、中熟和晚熟3类熟型构建东北春大豆气候区划指标.利用基于模糊数学的区划指标隶属度函数和作物反应函数两种气候适宜度评价方法,结合精细化插
The complex geometric features of subsurface fractures at different scales makes mesh generation challenging and/or expensive.In this paper,we make use of neural style transfer(NST),a machine learning technique,to generate mesh from rock fracture images.I
This paper aims to propose an explicit formulation of the macroscopic strength criterion for porous media with spherical voids.The matrix is assumed rigid and perfectly plastic with yield surface described by the three-parameter strength criterion,which i
氨是人们生产生活最重要的化工原料之一,但传统的合成氨过程需要在高温高压条件下进行,其年均能耗约占到世界能源总消耗的1％～2％.同时,由于其能量来自于化石燃料燃烧,此过程会不
To meet the ever-increasing construction demands around the world during recent years,reinforcement and stabilization methods have been widely used by geotechni
以中性红和硫脲为原料,一步水热法制备了近红外荧光硫氮共掺杂碳量子点(SN-CQDs).通过透射电子显微镜(TEM)、紫外-可见吸收光谱、荧光光谱、X射线光电子能谱等技术对制备的SN