Solid-state batteries have received increasing attention in scientific and industrial communities,which benefits from the intrinsically safe solid electrolytes(SEs).Although much effort has been devoted to designing S...Solid-state batteries have received increasing attention in scientific and industrial communities,which benefits from the intrinsically safe solid electrolytes(SEs).Although much effort has been devoted to designing SEs with high ionic conductivities,it is extremely difficult to fully understand the ionic diffusion mechanisms in SEs through conventional experimental and theoretical methods.Herein,the temperature-dependent concerted diffusion mechanism of ions in SEs is explored through machinelearning molecular dynamics,taking Li_(10)GeP_(2)S_(12) as a prototype.Weaker diffusion anisotropy,more disordered Li distributions,and shorter residence time are observed at a higher temperature.Arrhenius-type temperature dependence is maintained within a wide temperature range,which is attributed to the linear temperature dependence of jump frequencies of various concerted diffusion modes.These results provide a theoretical framework to understand the ionic diffusion mechanisms in SEs and deepen the understanding of the chemical origin of temperature-dependent concerted diffusions in SEs.展开更多
A novel soluble regular ladder poly（benzoyl-3-aminopropyl） silsesquioxane （LPBAS） was facilely prepared under effective assistance of concerted H-bonding self-assembly of amido groups of side chains and silanol gr...A novel soluble regular ladder poly（benzoyl-3-aminopropyl） silsesquioxane （LPBAS） was facilely prepared under effective assistance of concerted H-bonding self-assembly of amido groups of side chains and silanol groups, respectively, of a new template monomer [1,3-bis（benzoyl-3-aminopropyl）-1,1,3,3-tetraethoxydisiloxane] （M）. The ordered ladder structure of LPBAS is manifested in： （1） the presence of two Bragg peaks representing the ladder width （d） and ladder thickness （t） in X-ray diffraction （XRD） pattern; （2） narrow base-line width （w = 6） of resonance absorption for -CH2SiO3/2 moiety in 29Si-NMR and （3） high glass transition temperature Tg = 1 12℃ in differential scanning calorimetry （DSC） analysis.展开更多
By exploring the space and the design techniques of roof garden in Frank Gehry's Walt Disney Concert Hall, this paper made further research on the combination of architectural functions and pedestrian fl ow lines,...By exploring the space and the design techniques of roof garden in Frank Gehry's Walt Disney Concert Hall, this paper made further research on the combination of architectural functions and pedestrian fl ow lines, and attempted to summarize the unique design techniques of Frank Gehry by analyzing his works, improve and develop design theories of roof garden, and attract more attention from the public to roof garden design.展开更多
The rearrangement of α-substituted phenyl-α, α′-dimethoxypropanones (R1) was recently proved to he an [1, 3] siqmatropic migration of methoxy group by study of LFER, solvent effect, crossover experiment, and by ot...The rearrangement of α-substituted phenyl-α, α′-dimethoxypropanones (R1) was recently proved to he an [1, 3] siqmatropic migration of methoxy group by study of LFER, solvent effect, crossover experiment, and by other means. The rearrangement catalysed by trace of totuenesulfonic acid gave a negligible value of the Hammett reaction constant. Further experimental results show that the electronic effect of substituent on the aromatic ring for the rearrangement in neutral medium is much greater (Table 1). We propose sigmatropic migration展开更多
At 11:00 a.m. of February 10, 2002, the"China National Concert in the Spring Festival ofthe Year of the Horse" was solemnly given in thegolden hall of Vienna. The Hong Kong ChineseFolk Music Orchestra, under...At 11:00 a.m. of February 10, 2002, the"China National Concert in the Spring Festival ofthe Year of the Horse" was solemnly given in thegolden hall of Vienna. The Hong Kong ChineseFolk Music Orchestra, under the direction of thechief inspector and famous conductor展开更多
Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International ...Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International Department of the CPC Central Committee,the organizer of this event.Thanks to the concerted efforts展开更多
Known as the biggest national pavilion,in INTERTEXTILE 2008 held in Shanghai New International Expo Center in October,Italian Trade Commission-I.C.E. and their knighthoods came again.
THRONGS of people were overwhelmed by tears and cheers on December 12, 2015 as French Foreign Minister Laurent Fabius, president of the Paris climate change conference, struck a green gavel. It signaled the conclusion...THRONGS of people were overwhelmed by tears and cheers on December 12, 2015 as French Foreign Minister Laurent Fabius, president of the Paris climate change conference, struck a green gavel. It signaled the conclusion of a marathon 13- day negotiation between delegates representing nearly 200 different countries and regions, who had gathered in Paris. The representatives at the 2015 United Nations Climate Change Conference made a deal that will go down in history as a rare moment of worldwide cooperation in the face of a monumental challenge, But as fellow negotiators hugged each other in celebration, grave concerns lurked in the recesses of their minds - this was just the beginning of a war against climate change that is expected to last for generations.展开更多
文摘目的 探讨CONCERT-CL闭环靶控输注系统在腹腔镜胃肠手术患者中的应用效果及对患者术后胃肠功能和免疫功能的影响。方法 选取2022年8月至2023年5月上海市徐汇区中心医院收治的80例腹腔镜胃肠手术患者作为研究对象,按随机数表法分为观察组和对照组各40例。两组患者均采用相同的麻醉方案,但观察组患者采用CONCERT-CL闭环靶控输注系统进行麻醉管理,而对照组患者则采用开放式麻醉维持。比较两组患者的围术期相关指标、胃肠功能和围术期白细胞分化抗原(CD) TT细胞数量和自然杀伤细胞(NK)细胞数量,同时比较两组患者术后不良反应发生情况。结果 观察组患者的手术时间、麻醉时间分别为(183.60±30.15) min、(206.69±10.54) min,对照组分别为(189.12±43.85) min、(211.65±16.83) min,差异均无统计学意义(P>0.05);观察组患者术中丙泊酚用量和顺式阿曲库铵用量分别为(13.34±2.00) mg/kg、(0.26±0.09) mg/kg,明显低于对照组的(15.96±1.41) mg/kg、(0.35±0.11) mg/kg,拔管即刻警觉-镇静(OAA/S)评分和术中BIS时间为40~60的占比分别为(3.46±0.25)分、(82.60±4.22)%,明显高于对照组的(3.12±0.46)分、(64.02±3.65)%,差异均有统计学意义(P<0.05);观察组和对照组患者的肠鸣音恢复[(22.60±4.52) h vs (30.57±6.84) h]、腹痛缓解[(26.88±4.11) h vs (30.17±2.94) h]、术后首次排气时间[(32.69±4.25) h vs (44.35±1.68) h]比较,观察组明显短于对照组,差异均有统计学意义(P<0.05);术后12 h,观察组和对照组患者的CD4+TT数量[(35.69±1.54)%vs (32.01±6.21)%]、NK细胞数量[(20.36±2.41)%vs (18.73±2.65)%]比较,观察组明显高于对照组,CD8+TT数量[(27.01±1.79)%vs (29.28±3.87)%]比较,观察组明显低于对照组,差异均有统计学意义(P<0.05);观察组患者的不良反应总发生率为5.00%,略低于对照组的10.00%,但差异无统计学意义(P>0.05)。结论 CONCERT-CL闭环靶控输注系统在腹腔镜胃肠手术患者中的应用能够降低术中麻醉维持药物用量,患者苏醒速度更快。同时还能够促进患者术后胃肠功能的恢复,并且对免疫功能起到一定改善作用。
基金supported by the National Key Research and Development Program(2021YFB2500210)the Beijing Municipal Natural Science Foundation(Z20J00043)+4 种基金the National Natural Science Foundation of China(22109086 and 21825501)the China Postdoctoral Science Foundation(2021TQ0161 and 2021 M691709)the Guoqiang Institute at Tsinghua University(2020GQG1006)the support from the Shuimu Tsinghua Scholar Program of Tsinghua Universitythe support from the Tsinghua National Laboratory for Information Science and Technology for theoretical simulations。
文摘Solid-state batteries have received increasing attention in scientific and industrial communities,which benefits from the intrinsically safe solid electrolytes(SEs).Although much effort has been devoted to designing SEs with high ionic conductivities,it is extremely difficult to fully understand the ionic diffusion mechanisms in SEs through conventional experimental and theoretical methods.Herein,the temperature-dependent concerted diffusion mechanism of ions in SEs is explored through machinelearning molecular dynamics,taking Li_(10)GeP_(2)S_(12) as a prototype.Weaker diffusion anisotropy,more disordered Li distributions,and shorter residence time are observed at a higher temperature.Arrhenius-type temperature dependence is maintained within a wide temperature range,which is attributed to the linear temperature dependence of jump frequencies of various concerted diffusion modes.These results provide a theoretical framework to understand the ionic diffusion mechanisms in SEs and deepen the understanding of the chemical origin of temperature-dependent concerted diffusions in SEs.
基金This work was financially supported by NSFC (Nos. 50073028, 29974036 and 20174047).
文摘A novel soluble regular ladder poly（benzoyl-3-aminopropyl） silsesquioxane （LPBAS） was facilely prepared under effective assistance of concerted H-bonding self-assembly of amido groups of side chains and silanol groups, respectively, of a new template monomer [1,3-bis（benzoyl-3-aminopropyl）-1,1,3,3-tetraethoxydisiloxane] （M）. The ordered ladder structure of LPBAS is manifested in： （1） the presence of two Bragg peaks representing the ladder width （d） and ladder thickness （t） in X-ray diffraction （XRD） pattern; （2） narrow base-line width （w = 6） of resonance absorption for -CH2SiO3/2 moiety in 29Si-NMR and （3） high glass transition temperature Tg = 1 12℃ in differential scanning calorimetry （DSC） analysis.
文摘By exploring the space and the design techniques of roof garden in Frank Gehry's Walt Disney Concert Hall, this paper made further research on the combination of architectural functions and pedestrian fl ow lines, and attempted to summarize the unique design techniques of Frank Gehry by analyzing his works, improve and develop design theories of roof garden, and attract more attention from the public to roof garden design.
文摘The rearrangement of α-substituted phenyl-α, α′-dimethoxypropanones (R1) was recently proved to he an [1, 3] siqmatropic migration of methoxy group by study of LFER, solvent effect, crossover experiment, and by other means. The rearrangement catalysed by trace of totuenesulfonic acid gave a negligible value of the Hammett reaction constant. Further experimental results show that the electronic effect of substituent on the aromatic ring for the rearrangement in neutral medium is much greater (Table 1). We propose sigmatropic migration
文摘At 11:00 a.m. of February 10, 2002, the"China National Concert in the Spring Festival ofthe Year of the Horse" was solemnly given in thegolden hall of Vienna. The Hong Kong ChineseFolk Music Orchestra, under the direction of thechief inspector and famous conductor
文摘Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International Department of the CPC Central Committee,the organizer of this event.Thanks to the concerted efforts
文摘Known as the biggest national pavilion,in INTERTEXTILE 2008 held in Shanghai New International Expo Center in October,Italian Trade Commission-I.C.E. and their knighthoods came again.
文摘THRONGS of people were overwhelmed by tears and cheers on December 12, 2015 as French Foreign Minister Laurent Fabius, president of the Paris climate change conference, struck a green gavel. It signaled the conclusion of a marathon 13- day negotiation between delegates representing nearly 200 different countries and regions, who had gathered in Paris. The representatives at the 2015 United Nations Climate Change Conference made a deal that will go down in history as a rare moment of worldwide cooperation in the face of a monumental challenge, But as fellow negotiators hugged each other in celebration, grave concerns lurked in the recesses of their minds - this was just the beginning of a war against climate change that is expected to last for generations.
