Celastrol,a Chinese herbal medicine,has exhibited anticancer activity in many types of cancer cells.However,the further clinical application of celastrol is restricted by its poor water solubility and serious side effects.Furthermore,the apoptosis mechani
An unexpected in-situ hydrolysis reaction occurred during the solvothermal reaction of N,N’-bis(4-carboxy-2-methylphenyl)pyromellitic di-imide)and Ba(NO3)2,and a novel porous Ba-MOF,[H
2N(CH
3)
2]
0.5[Ba
1.5
Catalytic transfer hydroge nation(CTH)of furfural(FF)to furfu ryl alcohol(FFA)has received great intere st in recent years.He rein,Cu-Cs bimetallic supported catalyst,CuCs(2)-MCM,was developed for the CTH of FF to FFA using formic as hydrogen donor.CuCs(2
The 1D microwires based on π-extended azaBODIPY were successfully prepared and characterized for the first time. The bisphenanthrene-fused azaBPP-12C with four
Using particle swarm optimization (PSO) methodology for crystal structure prediction, we predicted a novel two-dimensional (2D) monolayer of silicide diphosphor
Doping and increasing specific surface area by forming highly porous structures are two effective ways to enhance the photocatalytic performances of TiO2 particles.He re for the first time,we report a new facile method to prepare the macroporou
为了研究现有建筑物平移中上轨道设计方法在砌体结构中的适用性,以某平移工程为研究对象,分析施工过程中结构的受力状态及监测数据,选取典型工况进行有限元分析。在有限元分析的基础上,对上轨道各构件进行参数分析,分别研究各构件对结构整体受力的影响。分析结果表明:上轨道各构件在不同工况下的传力比不同,且不同工况下的主要受力构件也不同;连梁刚度的提高可以有效改善建筑外墙的受力。同时给出了一种合理的斜撑布置方式,供其他工程参考。
针对避险车道末端悬崖安装的柔性防护网在实际工程应用中存在理论依据不完善的问题,采用ANSYS APDL和LS-DYNA软件对防护网总体尺寸、材料、网目边长、编织形式、网体形状等进行设计,并结合假人及驾驶室模型对防护网进行冲击仿真试验,以验证设计的合理性。仿真结果表明:在受2种不同姿势假人和驾驶室的冲击时,宽度为6000 mm、跨度为6000 mm、深度为5196 mm、网体边绳索单元长度为150 mm(网目边长为106 mm)、网目45°斜织、网片夹角为60°的V形钢丝绳防护网综合体现了较好的缓冲吸能和保
Using the global particle-swarm optimization method and density functional theory, we predict a new stable two-dimensional layered material: MgSiP2 with a low-b
为了获得合理的浅埋软弱围岩隧道掌子面锚杆加固参数,基于理论分析与数值模拟相结合的手段,对黏土地层浅埋隧道掌子面锚杆的加固参数进行研究。结果表明:1)基于相关规范要求,并考虑围岩扰动区及塑性区分布,掌子面锚杆的合理加固长度应取值为18 m;2)考虑掌子面锚杆加固的安全性与经济性,其加固根数为150根(1根/m2)时最优;3)采用中部圆形的方案布设掌子面锚杆,其加固效果与全断面加固基本一致,且比全断面加固更具经济性。