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Pressure-induced color change arising from transformation between intra-and inter-band transitions in LuH_(2±x)N_(y)

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Science China(Physics,Mechanics & Astronomy) 2024年第2期67卷 161-166页

作者： Zhe Liu Yingjie Zhang shenyang Huang Xue Ming Qing Li Chenghao Pan Yaomin Dai Xiaoxiang Zhou Xiyu Zhu Hugen Yan Hai-Hu Wen Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of PhysicsNational Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China State Key Laboratory of Surface Physics Key Laboratory of Micro and Nano-Photonic Structures of the Ministry of EducationDepartment of PhysicsFudan UniversityShanghai 200433China

The pressure-induced color change in the nitrogen-doped lutetium hydride has triggered extensive discussions about the underlying physics and potential ***,we study the optical response of LuH_(2±x)N_(y)in a broad frequency range at ambient pressure and its evolution with pressure in the visible spectral *** broad-band optical spectra at ambient pressure reveal a Drude component associated with intra-band electronic transitions and two Lorentz components(L1 and L2)arising from inter-band electronic *** application of pressure causes a spectral weight transfer from L1 to the Drude component,leading to a blue shift of the plasma edge in the reflectivity spectrum alongside a reduction of the high-frequency *** results suggest that the pressure-induced color change in LuH_(2±x)N_(y)is closely related to the transformation between intra-and inter-band electronic transitions,providing new insights into the mechanism of the pressure-induced color change in LuH_(2±x)N_(y).

关键词： nitrogen-doped lutetium hydride optical spectroscopy high-pressure technique color change

Volumetric lattice Boltzmann method for pore-scale mass diffusionadvection process in geopolymer porous structures

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2126-2136页

作者： Xiaoyu Zhang Zirui Mao Floyd W.Hilty Yulan Li Agnes Grandjean Robert Montgomery Hans-Conrad zur Loye Huidan Yu shenyang Hu Purdue University IndianapolisIN46202USA Pacific Northwest National Laboratory RichlandWA99352USA CEA DESISECDMRCUniv.MontpellierMarcouleFrance Department of Chemistry and Biochemistry University of South CarolinaColumbiaSC29208USA

Porous materials present significant advantages for absorbing radioactive isotopes in nuclear waste *** improve absorption efficiency in nuclear waste treatment,a thorough understanding of the diffusion-advection process within porous structures is essential for material *** this study,we present advancements in the volumetric lattice Boltzmann method(VLBM)for modeling and simulating pore-scale diffusion-advection of radioactive isotopes within geopolymer porous *** structures are created using the phase field method(PFM)to precisely control pore *** our VLBM approach,we introduce a concentration field of an isotope seamlessly coupled with the velocity field and solve it by the time evolution of its particle population *** address the computational intensity inherent in the coupled lattice Boltzmann equations for velocity and concentration fields,we implement graphics processing unit(GPU)*** of the developed model involves examining the flow and diffusion fields in porous ***,good agreement is observed for both the velocity field from VLBM and multiphysics object-oriented simulation environment(MOOSE),and the concentration field from VLBM and the finite difference method(FDM).Furthermore,we investigate the effects of background flow,species diffusivity,and porosity on the diffusion-advection behavior by varying the background flow velocity,diffusion coefficient,and pore volume fraction,***,all three parameters exert an influence on the diffusion-advection *** background flow and diffusivity markedly accelerate the process due to increased advection intensity and enhanced diffusion capability,***,increasing the porosity has a less significant effect,causing a slight slowdown of the diffusion-advection process due to the expanded pore *** comprehensive parametric study provides valuable insights into the kinetics of isotope

关键词： Volumetric lattice Boltzmann method(VLBM) Phase field method(PFM) Pore-scale diffusion-advection Nuclear waste treatment Porous media flow Graphics processing unit(GPU) parallelization

Study on Green Residential Space Design

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IJLAI Transactions on Science and Engineering

IJLAI Transactions on Science and Engineering 2024年第1期2卷 32-37页

作者： Yu Jiang shenyang Normal University No.253.Huanghe North Street Shenyang 110034China

With the ever-changing nature,green ecology has become an international trend of ***,the green ecological design of residential space has become the main melody of people’s *** always implement the concept of ecological and environmental protection in the design process,attach importance to the ecological effect of residential space,carry out reasonable budget and use of environmentally friendly decorative materials,reduce the waste of materials,save money and save resources at the same time,and protect the *** the same time,people began to put their hopes on the residential space design,which made the green residential space design began to *** the bold exploration and practice of designers,the design of green residential space will be endowed with more distinctive characteristics and unique *** from the concept of green design,this paper explores the method of green space design through typical analysis.

关键词： Green Residential space Haze

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当代欧美“共同性”思潮的演进

学术月刊 2024年第4期56卷 89-102页

作者：潘沈阳清华大学哲学系北京100084

当下流行于欧美学界的“共同性”思想尚未在国内学界被系统研究,但这股思想潮流不仅是国外学界前沿理论动态,更是马克思主义最新思想资源。“共同性”思想根植于近年来在欧美流行的公地运动及其相关研究,以及在这一实践与理论进程中产... 详细信息

当下流行于欧美学界的“共同性”思想尚未在国内学界被系统研究,但这股思想潮流不仅是国外学界前沿理论动态,更是马克思主义最新思想资源。“共同性”思想根植于近年来在欧美流行的公地运动及其相关研究,以及在这一实践与理论进程中产生的治理方法与公地形态两个层次的突破性进展。以奈格里、哈特等人主导的思想共同体作为参考点,对目前“共同性”思想的整体发展情况可从两个层面展开分析:从对话性补充一侧来看,这一思想共同体内部的拓展,使得“共同性”从物的单一维度拓展至物—关系的双重维度,并最终将“共同性”锚定为一种生产方式;从论战性批判一侧来看,针对“共同性”思想的自治主义政治取向、公地运动渊源和马克思主义理论底色,各自形成了分别基于上述三个维度的批判。更进一步地,激进左翼学者将从公地研究中抽象出的“共同性”思想与马克思主义传统中的共产主义思想相结合,试图一方面借助最新的思想与实践资源在当代激活马克思曾提出的共产主义设想,一方面又以共产主义自身深厚的历史积淀来为“共同性”思想注入革命力量。

关键词：共同性公地运动共产主义共同主义马克思主义

Optimal guaranteed cost control for fuzzy descriptor systems with time-varying delay

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Journal of Systems Engineering and Electronics 2008年第3期19卷 584-591页

作者： Tian Weihua1,2 & Zhang Huaguang3.1. School of Information Science and Engineering, Northeastern Univ., shenyang 110004, P. R. China 2. Dept. of Automatic Control, shenyang Inst. of Engineering, shenyang 11013., P. R. China 3. School of Information Science and Engineering, Northeastern Univ., shenyang 110004, P. R. China. (Received December 27, 2006) [a]School of Information Science and Engineering Northeastern Univ. shenyang 110004 P. R. China [b]Dept. of Automatic Control shenyang Inst. of Engineering shenyang 11013. P. R. China [c]School of Information Science and Engineering Northeastern Univ. shenyang 110004 P. R. China

Based on the delay-independent rule, the problem of optimal guaranteed cost control for a class of Takagi-Sugeno （T-S） fuzzy descriptor systems with time-varying delay is studied. A linear quadratic cost function is considered as the performance index of the closed-loop system. Sufficient conditions for the existence of guaranteed cost controllers via state feedback are given in terms of linear matrix inequalities （LMIs）, and the design of an optimal guaranteed cost controller can be reduced to a convex optimization problem. It is shown that the designed controller not only guarantees the asymptotic stability of the closed-loop fuzzy descriptor delay system, but also provides an optimized upper bound of the guaranteed cost. At last, a numerical example is given to illustrate the effectiveness of the proposed method and the perfect performance of the optimal guaranteed cost controller.

关键词： fuzzy descriptor systems optimal guaranteed cost control time-varying delay linear matrix inequalities (LMIs).

KAI1/CD82 suppresses hepatocyte growth factorinduced migration of hepatoma cells via upregulationof Sprouty2

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Science China(Life Sciences) 2008年第7期51卷 648-654页

作者： MU ZhenBin1 ,3.WANG Hua 2,ZHANG Jing 2,LI QingFang 2,WANG LiSheng 2&GUO XiaoZhong 3.1State Key Laboratory of Cancer Biology and Institute of Digestive Diseases,Xijing Hospital,Fourth Military Medical University,Xi’an 71003.,China 2Department of Experimental Hematology,Beijing Institute of Radiation Medicine,Beijing 100850,China 3.epartment of Gastroenterology,shenyang General Hospital of pla,shenyang 110016,China 1. State Key Laboratory of Cancer Biology and Institute of Digestive Diseases Xijing Hospital Fourth Military Medical University Xi’an 710032 China 3. Department of Gastroenterology Shenyang General Hospital of PLA Shenyang 110016 China 2. Department of Experimental Hematology Beijing Institute of Radiation Medicine Beijing 100850 China

We conducted a study concerning the suppressive mechanism of KAI1/CD82 on hepatoma cell *** growth factor(HGF)induces the migration of hepatoma cells through activation of cellular sphingosine kinase 1(SphK1).Adenovirus-mediated gene transfer of KAI1(Ad-KAI1)downregulates the SphK1 expression and suppresses the HGF-induced migration of SMMC-7721 human hepatocellcular carcinoma *** of KAI1/CD82 significantly elevates Sprouty2 at the protein *** of Sprouty2 with RNA interference can block the KAI1/CD82-induced suppression of hepatoma cell migration and downregulation of SphK1 *** is demonstrated that KAI1/CD82 suppresses HGF-induced migration of hepatoma cells via upregulation of Sprouty2.

关键词： KAI1/CD82 Sprouty2 migration hepatocyte growth factor

An omnidirectional mobile robot

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Science China(Information Sciences) 2011年第12期54卷 2651-2658页

作者： YE ChangLong 1,2 , MA ShuGen 2,3.& HUI Li 1 1 School of Mechatronics Engineering, shenyang Aerospace University, shenyang 11013., China 2 State Robotics Laboratory, shenyang Institute of Automation, shenyang 110016, China 3.Department of Robotics, Ritsumeikan University, Kusatsu 525-8577, Japan 1. School of Mechatronics Engineering Shenyang Aerospace University Shenyang 110136 China2. State Robotics Laboratory Shenyang Institute of Automation Shenyang 110016 China3. Department of Robotics Ritsumeikan University Kusatsu 525-8577 Japan

A novel omnidirectional wheeled mobile robot, mainly composed of three special wheeled structures-MY wheel, is developed in this paper. Based on the movement principle of sphere, the sphere of the special wheel is divided into contact part and non-contact part. The function of the omnidirectional wheel is realized utilizing the mutual complementarities of the two parts of the sphere. The passive rotational axes of two parts of the sphere are in staggered arrangement to each other at an angle of 45 degrees to realize continuous contact with the ground. At the same time, this structure also improves the strength of omnidirectional wheel. It is verified by the kinematic analysis and simulation of the wheeled mobile mechanism that the mechanism can achieve the omnidirectional movement. It is also proved by the movement experiment of the mobile robot that the omnidirectional mechanism can not only achieve the omnidirectional movements but also step over obstacles.

关键词： omnidirectional mobile robot mechanism design kinematics

Prediction of the thermodynamic properties of 1-alkyl-3.methylimidazolium lactate ionic liquids [C_nmim][Lact](n=2,3.4,5,and 6) by parachor

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Science China Chemistry 2010年第12期53卷 2564-2570页

作者： FANG DaWei 1,3.TONG Jing 2,GUAN Wei 2,WANG Han 2 & YANG JiaZhen 1,3.1 Institute of Rare and Scattered Elements Chemistry,Liaoning University,shenyang 11003.,China 2 College of Chemistry,Liaoning University,shenyang 11003.,China 3.Key Laboratory of Rare and Scattered Elements,Liaoning Province,shenyang 11003.,China 1. Institute of Rare and Scattered Elements Chemistry Liaoning University Shenyang 110036 China3. Key Laboratory of Rare and Scattered Elements Liaoning Province Shenyang 110036 China2. College of Chemistry Liaoning University Shenyang 110036 China

An ionic liquid (IL) based on lactate,1-butyl-3.methylimidazolium lactate ([C4mim][Lact]),has been prepared and characterized by 1H nuclear magnetic resonance (NMR) spectroscopy and differential scanning calorimetry (DSC).Since the IL can form strong hydrogen bonds with water,trace water is a problematic impurity in the *** the standard addition method (SAM),the density,refractive index and surface tension of [C4mim][Lact] were measured in the temperature range (3.8.15 to 3.3.15 ± 0.05) *** the basis of the experimental data,the parachor and molar volume for [C4mim][Lact],and the molecular volume V m,surface tension γ,molar enthalpy of vaporization △lgHm 0,refractive index n D,and the thermal expansion coefficients,for the homologues [Cnmim][Lact] (n=2,3.4,5,and 6) were estimated using semi-empirical *** estimated values are in good agreement with the experimental data.

关键词： parachor lactate ionic liquid density surface tension refractive index

Localization of genes for lateral branch and female sex expression and construction of a molecular linkage map in cucumber (Cucumis sativus L.) with RAPD markers

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Progress in Natural Science:Materials International 2005年第2期15卷 48-53页

作者： LI Xiaozun1*, PAN Junsong1*, WANG Gang1, TIAN Libo3. SI Longting3. WU Aizhong2** and CAI Run1**(1. Agriculture and Biology School, Shanghai Jiaotong University, Shanghai 201101, China 2. Shanghai Academy of Agricultural Science, Shanghai 201106, China 3. Horticulture School, shenyang Agricultural University, shenyang 110161, China) Agriculture and Biology School Shanghai Jiaotong University Shanghai 201101 China. Horticulture School Shenyang Agricultural University Shenyang 110161 China. Shanghai Academy of Agricultural Science Shanghai 201106 China

A cucumber (Cucumis sativus L.) molecular linkage map, including 79 random-amplified polymorphic DNAs (RAPD) and two genes , lb for lateral branch and f for female sex expression, is constructed from a cross between a line, S52, with weak lateral growing ability and staminate from Dabieshan Mountains area in China and another line, S06, with strong lateral growing ability and gynoecious from Europe. The map contains nine linkage groups and spans 1110.0 cM with an average distance of 13.7 cM between loci. The lb locus is located in a longer linkage group LG-2 and flanked by two markers, OP-Q5-1 and OP-M-2-2, at 9.3.cM and 15.9 cM, respectively. In the meantime, the RAPD loci, OP-Q5-2 and BC151, in a short linkage group were found to flank f at 13.7 cM and 13.4 cM, respectively. The construction of RAPD map has paved a way for further study of the genes for lateral branch, female sex expression and other agronomic traits in cucumber.

关键词： cucumber (Cucumis sativus L.) lateral branch gynoecy RAPD genetic mapping