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integration of a fused silica capillary and in-situ Raman spectroscopy for investigating CO_(2) solubility in n-dodecane at near-critical and supercritical conditions of CO_(2)

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Petroleum Science 2022年第6期19卷 3124-3133页

作者： Jun-Liang Wang Zi-Hao song Lin-Jun Li Li-Li Yang Quan-Yuan Wang i.ming chou Zhi-Yan Pan College of Environment Zhejiang University of TechnologyHangzhouZhejiang310032China Hangzhou Academy of Environmental Protection HangzhouZhejiang310032China Laboratory for Experimental Study Under Deep-sea Extreme Conditions Institute of Deep-sea Science and EngineeringChinese Academy of SciencesSanyaHainan572000China

To determine the solubility of CO_(2)in n-dodecane at T=303.15-353.15 K,P≤11.00 MPa,an integrated fused silica capillary and in-situ Raman spectroscopy system was *** Raman peak intensity ratio(i_(CO_(2))/iC-H)between the upper band of CO_(2)Fermi diad(i_(CO_(2)))and the C-H stretching band of n-dodecane(iC-H)was employed to determine the solubility of CO_(2)in n-dodecane based on the calibrated correlation equation between the known CO_(2)molality in n-dodecane and the i_(CO_(2))/iC-Hratio with R^(2)=*** results indicated that the solubility of CO_(2)decreased with increasing temperature and increased with increasing *** maximum CO_(2)molality(30.7314 mol/kg)was obtained at 303.15 K and7.00 ***,a solubility prediction model(lnS=(P-A)/B)based on the relationship with temperature(T in K)and pressure(P in MPa)was developed,where S is CO_(2)molality,A=-8×10^(-6)T^(2)+0.0354T-8.1605,and B=*** results indicated that the solubilities of CO_(2)derived from this model were in good agreement with the experimental data.

关键词： CO_(2)solubility n-dodecane Raman spectroscopy Fused silica capillary in-situ

Expression of altered retinoblastoma protein inversely correlates with tumor invasion in gastric carcinoma

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World Journal of Gastroenterology 2006年第44期12卷 7188-7191页

作者： Nan-Hua chou Hui-Chun Chen Nan-song chou Ping-i Hsu Hui-Hwa Tseng Department of Surgery Veterans General Hospital-Kaohsiung Taiwan China Department of Radiation Oncology Chang Gung Memorial Hospital-Kaohsiung Taiwan China Department of Surgery Chi Mei Foundation Hospital Taiwan China Department of internal Medicine Veterans General Hospital-Kaohsiung Taiwan China Department of Pathology Veterans General Hospital-Kaohsiung Taiwan China

AiM: To investigate the clinical and pathological significance of altered retinoblastoma (Rb) encoding protein (pRb) in gastric carcinoma. METHODS: Expression of altered pRb was analyzed in 91 patients with gastric adenocarcinoma by immunohistochemistry. RESULTS: Sixty-five percent (59/91) of the tumors were positively stained and the staining in tumor nuclei of gastric carcinoma ranged 0%-90%. Moreover, strong expression of altered pRb was found in 35% (6/17), 24% (5/21), 17% (8/46) and 0% (0/7) of T1, T2, T3 and T4 gastric carcinomas, respectively. altered pRb expression was inversely correlated with the depth of tumor invasion (P = 0.047). Degree of immunoreactivity had no significant correlation with tumor grade, node metastasis and distant metastasis. in terms of prognostic significance, univariate analysis showed that poor differentiation [41 (66.1%) vs 34 (42.5%) P = 0.051], advanced tumor stage (P ion [17 (80.5%) vs 58 (49.6%) P = 0.044] were associated with worse prognosis in these patients. However, multivariate analysis revealed that advanced tumor stage was the only independent poor prognostic factor (P iON: The mutation of Rb gene is frequent in gastric carcinoma. The expression of altered pRb inversely correlates with tumor invasion and is not an independent prognostic marker in gastric adenocarcinoma.

关键词： Gastric adenocarcinoma Altered retinoblastoma protein immunohlstochemistry

Characteristics of Breccias and C-O-Sr-S isotope Geochemistry of the Duocaima Pb-Zn Deposit in Tuotuohe, Qinghai Province: implications for the Ore-forming Process

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Acta Geologica Sinica(English Edition) 2015年第5期89卷 1568-1587页

作者： HAO Hongda song yucai Li Liansong JiA Zongyong WANG Yuankui LiU Qun institute of Geology Chinese Academy of Geological Sciences School of Earth Sciences and Resources China University of Geosciences NO.5 institute of Geology and Mineral Resources Exploration

The Duocaima carbonate-hosted Pb-Zn deposit is a newly found large deposit in the southern area of Qinghai *** this paper, the characteristics, genesis, significance to Pb-Zn mineralization of the widely developed breccias, and the ore-forming process have been carefully studied based on geological documentation of drilling holes, microscopic observations of petrography and microstructure and some stable isotope *** on the compositions of the clast and matrix, the breccias can be classified into three types： limestone clasts cemented by marl; limestone clasts with fine-grained calcareous materials; and limestone clasts cemented by hydrothermal *** mineralization in the first type of breccia is weak, whereas it is strong in the latter two types of *** to the locations of occurrence and structural characteristics of the breccias along with the relationship between the breccias and mineralization, part of the limestone clasts that are cemented by marl and outcrop in the contact zone between the Wudaoliang Formation（Nw） and the underlying Jiushidaoban Formation（Pj） are attributed to synsedimentary fault-genetic breccia, whereas the last of the limestone clasts that are cemented by marl and developed in the Jiushidaoban Formation（Pj） are attributed to the breccia generated by karst cave collapse; the limestone clasts with fine-grained calcareous materials and the limestone clasts cemented by hydrothermal calcite are attributed to breccia formed by hydrothermal *** breccia formed by karst collapse had consistently evolved for a long period of time, while the breccias with other origins were formed around the period of mineralization（i.e., about or slightly later than 20–16 Ma）.The breccia generated by karst cave collapse and hydrothermal dissolution are somewhat related; the formation of the breccia from karst cave collapse provided open space for the later mineralization and reaction between hydrothermal fluids an

关键词： breccias hydrothermal dissolution karst cave Mississippi Valley Type Pb-Zn deposit Duocaima

Amino acid assisted aqueous synthesis of highly stable CsPbBr_(3)nanocrystals for cell imaging

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Nano Research 2025年第1期18卷 675-683页

作者： Xue Li Yanan Guo Guoying Tan Qingyi Liu Nan song Yu Tang State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Lead halide perovskite nanocrystals(NCs)exhibit excellent optoelectronic performance and have drawn great interests in the fields of biological imaging and ***,the poor stability of CsPbX_(3)(X=Cl,Br,i)in water is still a challenge to hinder their practical *** this work,a facile strategy has been developed for aqueous synthesis of CsPbX_(3) nanocrystals,in which L-glutamic acid(LGlu)has been used to replace oleic acid in the synthetic *** from the synergic effects of L-Glu and oleylamine(OAm),CsPbBr_(3)nanocrystals(L-Glu/OAm-CsPbBr_(3)NCs)with high water stability have been directly prepared under a mild condition at room temperature in water,facilitated by the process of crystal phase transformation from Cs_(4)PbBr_(6) to CsPbBr_(3).L-Glu/OAm-CsPbBr_(3)NCs exhibit a high quantum yield of 85%and a narrow full width at half maximum of 16 nm,demonstrating their efficient luminescence in ***,L-Glu on the surface have contributed greatly to an acidic environment and passivation of surface defects,improving the water stability and dispersibility of CsPbBr_(3)***,L-Glu/OAm-CsPbBr_(3)NCs exhibit great biocompatibility due to the presence of L-Glu,resulting in their good performance for HeLa cell ***,we propose a facile and effective method to prepare CsPbBr_(3)nanocrystals with excellent water stability by using L-Glu and OAm as cooperated ligands and expand their application in cell imaging.

关键词： aqueous synthesis cell imaging lead halide perovskite nanocrystals L-glutamic acid phase transformation

A high-dexterity low-degree-of-freedom hybrid manipulator structure for robotic lion dance

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第4期11卷 240-249页

作者： Liang YAN i.ming CHEN song-huat YEO Yan CHEN Gui-lin YANG School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China School of Mechanical and Aerospace Engineering Nanyang Technological University Nanyang 639798 Singapore Mechatronics Gnmp Singapore Institute of Mastrfacturing Technology Nanyang 638075 Singapore

Lion dance is a very popular and lively Chinese traditional art form.A robotic project in Singapore has been dedicated to the design and demonstration for similar traditional art forms using modern mechatronics *** paper deals with a novel six-degree-of-freedom (6-DOF) hybrid manipulator with high stiffness,high loading capability and high dexterity,mimicking the lion dancer's upper body motions along with the lion head *** design of the hybrid manipulator consists of a 2-DOF torso structure in serial configuration and a 4-DOF dual arm structure in parallel *** combined 6-DOF hybrid manipulator can support the weight and dynamics of the lion head during the lion dance *** kinematics of the manipulator has been formulated and visualized for design *** kinematics of the hybrid manipulator were analytically derived for real-time motion *** on the design and modeling,a complete hybrid manipulator has been fabricated,implemented into the robotic lion,and successfully demonstrated for real robotic lion dance performance.

关键词： Parallel mechanism Hybrid manipulator Kinematics analysis

METHOD TO CALCULATE STRESS iNTENSiTY FACTOR OF V-NOTCH iN Bi-MATERiALS

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Acta Mechanica Solida Sinica 2008年第4期21卷 337-346页

作者： Youtang Li.ming song Key Laboratory of Digital Manufacturing Technology and Application Ministry of Education Lanzhou University of Technology Lanzhou 730050 China College of Meehano-Electronic Engineering Lanzhou University of Technology Lanzhou 730050 China

Based on Zak＇s stress function, the eigen-equation of stress singularity ofbi-materials with a V-notch was obtained. A new definition of stress intensity factor for a perpendicular interfacial V-notch of bi-material was put forward. The effects of shear modulus and Poisson＇s ratio of the matrix material and attaching material on eigen-values were analyzed. A generalized expression for calculating/（i of the perpendicular V-notch of bi-materials was obtained by means of stress extrapolation. Effects of notch depth, notch angle and Poisson＇s ratio of materials on the singular stress field near the tip of the V-notch were analyzed systematically with numerical simulations. As an example, a finite plate with double edge notches under uniaxial uniform tension was calculated by the method presented and the influence of the notch angle and Poisson＇s ratio on the stress singularity near the tip of notch was obtained.

关键词： bi-material V-notch eigen-equation stress intensity factor finite element method

Drift intermittent Synchronization and Controllability in a Simple Model

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Communications in Theoretical Physics 2005年第2X期44卷 297-302页

作者： XiE Bai-song YU ming-Young The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education Beijing Normal University Beijing 100875 China institute of Low Energy Nuclear Physics Beijing Normal University Beijing 100875 China Beijing Radiation Center Beijing Normal University Beijing 100875 China institut fiir Theoretische Physik i Ruhr-Universitaet Bochum D-44780 Bochum Germany

A simple model of three coupled oscillators as an approximation of main modes behaviors in a spatial extended system is proposed. Multi-looping generalized synchronization and drift intermittent lag phase synchronization phenomena are found in this simple model. For a certain of parameters in which chaotic-like intermittent behavior exhibit the amplitudes and phases of three modes are controlled to be synchronized states via coupling them with an external periodic mode.

关键词： nolinear dynamics synchronization

Catalytic behavior of Mo-Bi-Fe-Co-K-M-O(M=Ce,Gd,CeGd)catalysts for selective oxidation of isobutene

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Journal of Rare Earths 2024年第1期42卷 84-93,I0003页

作者： Qinghui Li Huahua Zhao Jian Yang Jun Zhao Liang Yan Huanling song Lingjun chou State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China University of Chinese Academy of Sciences Beijing100049China

The further improvement of methacrolein(MAL)selectivity from isobutene(iB)oxidation is crucial and *** this study,based on the typical Mo-Bi-Fe-Co-K-O mixed metal oxide,the rare earth element Gd-doped,Ce-doped and CeGd co-doped catalysts were prepared by co-precipitation strategy to increase the selectivity of MAL from 47.9%to 49.8%,64.2% and 68.6%,*** order to elucidate in-depth the promoting effect of Ce and/or Gd,various characterizations were utilized including X-ray diffraction patterns(XRD),Raman,X-ray fluorescence spectrometry(XRF),X-ray photoelectron spectroscopy(XPS),O_(2)-temperature programmed desorption(O_(2)-TPD),H2-temperature programmed reduction(H2-TPR),CO_(2)-temperature programmed desorption(CO_(2)-TPD),iB-temperature programmed desorption(i-C4-TPD)and in-situ iB-Fourier transform infrared spectroscopy(iB-FTiR).Both Ce and Gd finely regulate the bulk and surface structure of the catalyst,thus altering the redox ability,oxygen mobility and storage ability and *** with Ce,Gd addition slightly regulates the variation of Co^(2+)/Co^(3+)redox couples,greatly enhances the interaction among the components on the catalyst,thus only increases the content of surface oxygen species and has little effect on their *** Cecontaining catalyst performs stronger oxygen storage and migration ability,thus leading to the overproduction of surface Odefectspecies,which are proposed to be the active sites for the production of MAL and *** CeGd co-doped catalyst possesses the proper content of surface Odefectspecies,thus exhibits much higher MAL ***,the promoting mechanism of Ce and/or Gd over iB oxidation is ***,this work is helpful for understanding the influence of rare earth elements on the structure of mixed metal oxides and the olefin selective oxidation reaction.

关键词： Mixed metal oxide catalyst Rare earth element isobutene Selective oxidation Methacrolein

Compressed Data Separation via ℓ_(q)-Split Analysis with ℓ_(∞)-Constraint

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1655-1673页

作者： ming Yang Gu song Li Jun Hong Lin School of Mathematical Science Zhejiang UniversityHangzhou310027P.R.China Center for Data Science Zhejiang UniversityHangzhou310027P.R.China

in this paper,we study compressed data separation(CDS)problem,i.e.,sparse data separation from a few linear random *** propose the nonconvex ℓ_(q)-split analysis with ℓ_(∞)-constraint and 0ithm ℓ_(q)-split-analysis Dantzig selector(ℓ_(q)-split-analysis DS).We show that the two distinct subcomponents that are approximately sparse in terms of two different dictionaries could be stably approximated via the ℓ_(q)-split-analysis DS,provided that the measurement matrix satisfies either a classical D-RiP(Restricted isometry Property with respect to Dictionaries and ℓ_(2) norm)or a relatively new(D,q)-RiP(RiP with respect to Dictionaries and ℓ_(q)-quasi norm)condition and the two different dictionaries satisfy a mutual coherence condition between *** the Gaussian random measurements,the measurement number needed for the(D,q)-RiP condition is far less than those needed for the D-RiP condition and the(D,1)-RiP condition when q is small enough.

关键词： Data separation ℓ_(q)-split analysis Dantzig selector frames restricted isometry property compressed sensing