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Editorial

Science China(Physics,Mechanics & Astronomy) 2009年第12期52卷 1813-1814页

作者： Ping JinSong Qian ZhiHan Fung Lai-wa Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai200030China

Since the 1990s, a new round of lunar exploration missions have aroused profound interest of such big aerospace nations as U.S., Japan, Europe, China and India in broad-based active participation. In

关键词： VLBI Editorial CE

Added value of ratio of cross diameters of the appendix in ultrasound diagnosis of acute appendicitis

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World Journal of gastrointestinal Surgery 2024年第1期16卷 21-28页

作者： Feng-wa.gu Si-Ze Wu Department of Ultrasound The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102Hainan ProvinceChina

BACKgROUND The maximum outer diameter(MOD)of the appendix is an essential parameter for diagnosing acute appendicitis,but there is space for improvement in ultrasound(US)diagnostic *** To investigate whether combining the ratio of the cross diameters(RATIO)of the appendix with MOD of the appendix can enhance the diagnostic performance of acute *** A retrospective study was conducted,and medical records of 233 patients with acute appendicitis and 112 patients with a normal appendix were *** MOD and RATIO of the appendix were calculated and tested for their diagnostic performance of acute appendicitis,both individually and in *** The RATIO for a normal appendix was 1.32±0.16,while for acute appendicitis it was 1.09±*** cut-off value for RATIO was determined to be≤*** area under the receiver operating characteristic curve(AUC)for diagnosing acute appendicitis using RATIO≤1.18 and MOD>6 mm was 0.870 and 0.652,*** was a significant difference in AUC between RATIO≤1.18 and MOD>6 mm(Pg the combination of RATIO≤1.18 and MOD>6 mm with MOD>6 mm alone,the combination showed increased specificity,positive predictive value(PPV),and ***,the sensitivity and negative predictive value *** Combining RATIO of the appendix≤1.18 and MOD>6 mm can significantly improve the specificity,PPV,and AUC in the US diagnosis of acute appendicitis.

关键词： Acute appendicitis Diameter Ratio Diagnosis Ultrasound

Theoretical Study on the Localizations and Conversions of Excess Dielectrons inside Double-Cage-Like Single Molecule

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Theoretical Study on the Localizations and Conversions of Ex...

Theoretical Study on the Localizations and Conversions of Excess Dielectrons inside Double-Cage-Like Single Molecule

中国化学会第十二届全国量子化学会议

作者： yin-Feng wa.g Jia Li Jiangen Huang Ding-wa Zhang Jiangxi Province Key Laboratory of Coordination Chemistry/School of Chemistry and Chemical Engineering Jinggangshan University

The perfluorinated cages with all the exo polarized Cδ+-Fδ-bonds have been proposed to be efficient containers of excess *** manipulate the localizations and conversions of excess electrons and spin states,we presented the theoretical investigations on the double-cage-like single molecular solvated dielectron systems,e2@C20F18（NH）2C20F18（e2@BB’）at the B3LYP/6-31g（d）+4s4p theory ***’s found that the lone pair of excess electrons is confined inside one cage（left or right）to form two different singlet electromers（1L and 1R）,while the two excess electrons are,respectively,trapped inside different cages to form triplet structure（3,ground state）.Interestingly,the application of small external electric field of 21（-21）×10-4 au results in single electron transfer of 3→1L（1R）and such transfer is also a spin state conversion of T→S.

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Theoretical Study on the Localizations and Conversions of Ex...

Impact of climate change on outdoor design conditions and implications to peak loads

中国化学会2013年中西部地区无机化学化工学术研讨会

作者： yin-Feng wa.g Jia Li Jiangen Huang Ding-wa Zhang Jiangxi Province Key Laboratory of Coordination Chemistry Institute of Applied ChemistrySchool of Chemistry and Chemical EngineeringJinggangshan University

The perfiuorinated cages with all the exo polarized C-F bonds have been proposed to be efficient containers of excess *** manipulate the localizations and conversions of excess electrons and spin states,we presented the theoretical investigations on the double-cage-like single molecular solvated dielectron systems,e@CF(NH)CF(e@BB’) at the B3LYP/6-31g(d) + 4s4p theory ***’s found that the lone pair of excess electrons is confined inside one cage(left or

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Building Simulation 2022年第12期15卷 2051-2065页

作者： Xujie Huo Liu Yang Danny Hin wa Li Isaac Lun Siwei Lou Yuan Shi School of Architecture&Urban Planning Shenzhen UniversityShenzhen 518060China BenYuan Design and Research Center Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Architecture for Health&Well-being(in preparation) Shenzhen 518060China School of Architecture Xi’an University of Architecture and TechnologyXi’an 710055China Building Energy Research group Department of Architecture and Civil EngineeringCity University of Hong KongHong KongChina Centre for Sustainable Energy Technologies University of Nottingham Ningbo ChinaNingbo 315100China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China

This study exams the impact of climate change on outdoor design conditions and peak loads of five Chinese cities over the five major climate zones for the winter and summer *** design dry-bulb temperature(DDBT)and the coincident wet-bulb temperature(CWBT)for two 30-year periods;1971–2000 and 1984–2013 were *** was found that the DDBT of the period 1984–2013 was higher than that of the period 1971–2000,whereas the CWBT and the corresponding outdoor enthalpy of the period 1984–2013 was lower than that of 1971–2000 at the various cumulative *** trend implies that the increment in conductive heat gain through the building envelope due to the rising temperature can be lower than the reduction in fresh air load due to the lower outdoor air *** this case,the peak cooling loads may reduce in all five cities under study,and this is different from the widely held view that global warming will lead to more stringent outdoor design conditions,higher peak cooling loads and larger heating,ventilation and air conditioning(HVAC)plants than the current or historical *** implications to the“free-cooling”of HVAC systems with enthalpy control are discussed as well.

关键词： outdoor design conditions outdoor air enthalpy climate change peak loads

Reduction of residual stress in porous Ti6Al4V by in situ double scanning during laser additive manufacturing

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International Journal of Minerals,Metallurgy and Materials 2021年第11期28卷 1844-1853页

作者： Yi-wa Luo Ming-yong wa.g Ji-guo Tu Yu Jiang Shu-qiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Department of Orthopedics Peking University Third HospitalBeijing 100191China

Selective laser melting(SLM)technology plays an important role in the preparation of porous titanium(Ti)implants with complex structures and precise ***,the processing characteristics of this technology,which include rapid melting and solidification,lead to products with high residual ***,an in situ method was developed to restrain the residual stress and improve the mechanical strength of porous Ti alloys during laser additive *** brief,porous Ti6Al4V was prepared by an SLM three-dimensional(3D)printer equipped with a double laser system that could rescan each layer immediately after solidification of the molten powder,thus reducing the temperature gradient and avoiding rapid melting and *** indicated that double scanning can provide stronger bonding conditions for the honeycomb structure and improve the yield strength and elastic modulus of the *** with an energy density of 75%resulted in 33.5%–38.0%reductions in residual *** porosities of double-scanned specimens were 2%–4%lower than those of singlescanned specimens,and the differences noted increased with increasing sheet *** rescanning laser power should be reduced during the preparation of porous Ti with thick cell walls to ensure dimensional accuracy.

关键词： porous titanium selective laser melting additive manufacturing residual stress mechanical properties

Desferrioxamine in warm reperfusion media decreases liver injury aggravated by cold storage

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World Journal of gastroenterology 2013年第5期19卷 673-681页

作者： Peter g Arthur Xian-wa Niu Wen-Hua Huang Bastiaan DeBoer Ching Tat Lai Enrico Rossi John Joseph gary P Jeffrey School of Biomedical Biomolecular and Chemical Sciencesthe University of Western AustraliaCrawleyWA 6009Australia School of Medicine and Pharmacology the University of Western AustraliaCrawleyWA 6009Australia gastroenterology/Hepatology Sir Charles Gairdner HospitalNedlandsWA 6009Australia wa Liver and Kidney Transplantation Services QEII Medical CentreHospital AvenueNedlandsWA 6009Australia Division of Anatomical Pathology PathWestQEII Medical CentreHospital AvenueNedlandsWA 6009Australia Department of Biochemistry Path-WestQEII Medical CentreHospital AvenueNedlandsWA6009Australia

AIM:To evaluate whether desferrioxamine decreases ischemia and perfusion injury aggravated by cold storage(CS)in a rat liver perfusion model. METHODS:Isolated rat livers were kept in CS in University of Wisconsin Solution for 20 h at 4℃,then exposed to 25 min of warm ischemia(WI)at 37℃ followed by 2 h of warm perfusion(WP)at 37℃with oxygenated(95%oxygen and 5%carbon dioxide) Krebs-Henseleit ***(DFO),an iron chelator,was added at different stages of storage,ischemia and perfusion:in CS only,in WI only,in WP only, in WI and perfusion,or in all *** samples were collected after CS and after *** samples and bile were collected every 30 min(0,0.5,1,1.5 and 2 h)during liver *** injury was assessed by the determination of lactate dehydrogenase(LDH) and aspartate aminotransferase(AST)in the effluent and perfusate *** iron was analysed in the perfusate *** WP,the liver was collected for the determination of liver swelling(wet to dry ratio) and liver morphological examination(hematoxylin and eosin staining). RESULTS:Increased CS time caused increased liver dysfunction during *** 2 h of WP,liver injury was indicated by increased release of AST(0.5 h CS:9.4± 2.2 U/g liver vs 20 h CS:45.9±10.8 U/g liver,Pg liver vs 20 h CS:297 ±71 U/g liver,Pwas an associated increase in iron release into the perfusate(0.5 h CS:0.11 ±0.03μmoL/g liver vs 20 h CS:0.58±0.10μmoL/g liver,Pg vs 20 h CS:71±8μL/g liver,Pwas added during WI and WP following 20 h of CS,release of iron into the perfusate was de- creased(DFO absent 0.58±0.10μmoL/g liver vs DFO present 0.31±0.06μmoL/g liver,Pg liver vs DFO present 8.1±0.9 U/g liver,Pg liver vs DFO present 56±7 U/g liver,P<0.05),and inc

关键词： Iron chelation Ischemia and perfusion injury Liver Organ preservation Rat

Source-type solutions of heat equations with convection in several variables space

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Science China Mathematics 2011年第6期54卷 1145-1173页

作者： LU guoFu yin HongMin Institute of Applied Mathematics Putian University Putian 351100 China Department of Mathematics Washington State University Pullman WA 99164 USA

In this paper we study the source-type solution for the heat equation with convection： ut = △u ＋ b·▽un for （x,t） ∈ ST→ RN × （0,T] and u（x,0） = δ（x） for x ∈ RN, where δ（x） denotes Dirac measure in = RN,N 2,n 0 and b = （b1,...,bN） ∈ RN is a vector. It is shown that there exists a critical number pc = N＋2 such that the source-type solution to the above problem exists and is unique if 0 N n 〈 pc and there exists a unique similarity source-type solution in the case n = N＋1 , while such a solution does not exist N if n 〉 pc. Moreover, the asymptotic behavior of the solution near the origin is studied. It is shown that when 0 〈 n 〈 N＋1 the convection is too weak and the short time behavior of the source-type solution near the origin N is the same as that for the heat equation without convection.

关键词： source-type solution heat equation with convection existence and nonexistence

Numerical investigation on the effects of current headings on vortex induced motions of a semi-submersible

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Journal of Hydrodynamics 2022年第3期34卷 382-394页

作者： Wei-wen Zhao Zhi-yuan Wei De-cheng wa Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Marine Design&Research Institute of China Shanghai200011China Ocean College Zhejiang UniversityZhoushan316021China

In this paper,numerical simulations on vortex-induced motions(VIM)of a semi-submersible at two different current headings are conducted over a wide range of current *** simulations are performed with the computational fluid dynamics(CFD)solver VIM-FOAM-SJTU which is an in-house solver developed based on the OpenFOAM *** turbulent flows are resolved with a shear stress transport-delayed detached eddy simulation(SST-DDES)*** decay tests for transverse and yaw motion are performed in calm still water to make sure the equivalent stiffness is setup *** the results of VIM,including motion response,forces and moments,and flow patterns are presented and analyzed *** including transverse,in-line and yaw motion at different current headings and velocities are *** vorticity in the wake regions at different time stamps are also illustrated for different current headings and velocities.

关键词： Vortex-induced motions(VIM) vortex-induced yaw vim-FOAM-SJTU solver Reynolds stress