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Communications in Theoretical Physics 2013年第12期60卷 691-694页

作者： ch’ng Han Siong Shahidan Radiman School of Applied Physics Faculty of Science and Technology Universiti Kebangsaan Malaysia

The Einstein＇s genera/relativity is formulated in the Hamiltonian form for a spatia/ly Bat, isotropic and homogeneous universe. Subsequently, we perform the canonical quantization procedure to the Hamiltonian to obtain the Wheeler-DeWitt equation. Solving the Wheeler-DeWitt equation and employing the de Broglie-Bohm interpretation to the wave function of the universe, we obtain a new version of spatia/ly fiat Friedmann equation for the early universe where the scale factor of the universe is taken to be sufilcientlv small.

关键词： de Broglie-Bohm interpretation canonical quantum cosmology Friedmann equation Wheeler-DeWitt equation

RATIONAL GENERAL SOLUTIONS OF HIGHER ORDER ALGEBRAIC ODES

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Journal of Systems Science & Complexity 2013年第2期26卷 261-280页

作者： HUAng Yanli ng L X chu WINKLER Franz School of Computer Science and Software Engineering Tianjin Polytechnic University Research Institute for Symbolic Computation(RISC) Johannes Kepler University Department of Mathematics Quy Nhon University

This paper generalizes the method of ng6 and Winkler （2010, 2011） for finding rational general solutions of a first order non-autonomous algebraic ordinary differential equation （AODE） to the case of a higher order AODE, provided a proper parametrization of its solution hypersurface. The authors reduce the problem of finding the rational general solution of a higher order AODE to finding the rational general solution of an associated system. The rational general solutions of the original AODE and its associated system are in computable 1-1 correspondence. The authors give necessary and sufficient conditions for the associated system to have a rational solution based on proper reparametrization of invariant algebraic space curves. The authors also relate invariant space curves to first integrals and characterize rationally solvable systems by rational first integrals.

关键词： Algebraic ODE associated system invariant algebraic space curve rational first integral rational general solution.

Intraductal Prostatic Carcinoma: Epidemiological and Anatomopathological Aspects in Dakar

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Open Journal of Pathology 2024年第2期14卷 54-63页

作者： Ibou Thiam Fabrice Senghor Omar Sow Kor Ndiaye Mohamed Moustapha chérif Dial Anatomical Pathology Department Aristide Le Dantec University Hospital Dakar Senegal Anatomical Pathology Department Peace Hospital Ziguinchor Senegal General Surgery Department Peace Hospital Ziguinchor Senegal Anatomical Pathology Department Idrissa Pouye University Hospital Dakar Senegal

Introduction: Intraductal carcinoma is often associated with high-grade, high-stage adenocarcinoma. Its frequency is variable and it is considered a poor prognostic factor. In our context, when prostatic carcinoma is diagnosed, pathologists do not always report the presence of this anatomopathological entity. We therefore conducted a study to determine the epidemiological and anatomopathological profile of patients with this lesion in Dakar. Materials and Methods: This is a retrospective descriptive study covering a 1-year period from January to December 2022. It focused on cases of intraductal carcinoma diagnosed among prostatic carcinomas collected in the anatomopathology laboratories of Hôpital Général Idrissa Pouye (HOGIP) and Hôpital Militaire de Ouakam (HMO). It was based on archives of anatomopathological reports, blocks and slides. A total of 200 cases of prostatic carcinoma were collated and reviewed to identify those presenting with intraductal carcinoma according to the diagnostic criteria of Guo and Epstein. Results: 87 cases of intraductal carcinoma were found, representing 43.5% of prostatic carcinomas. The mean age was 71 years. Patients in their seventh decade were the most represented, i.e. 42.5%. The majority of samples examined were biopsies (72.4%). The mean PSA level was 965.91 ng/ml, with extremes ranging from 0.03 to 10,000 ng/ml. Histologically, 96.5% of cases (N = 84) were invasive prostatic carcinoma. Gleason score 8 (4 + 4) was the most common, accounting for 42.53% (N = 37). On average, the study found four (04) foci of intraductal carcinoma per specimen, with extremes ranging from 1 to 30. Dense cribriform architecture accounted for 78.16%, loose cribriform for 11.5%, solid for 8.04% and micropapillary for 2.3%. Six cases (6.9%) showed foci of comedonecrosis. The vast majority of radical prostatectomies (87.5%) were classified as pT3. Node invasion and perineural sheathing were observed in 12.5% and 52.32% of cases respectively. Conclusi

关键词： Intraductal Carcinoma Prostate Pathological Anatomy Senegal

Designing a practical ATM Campus Network

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High Technology Letters 1995年第1期1卷 61-65页

作者： Bin, L. Yong, zh. Shiduan, ch. Yan, M. Beijing Univ of Posts and Telecommunications Beijing China

A typical distributed ATM campus network——BUPT(Beijing University of Posts andTelecommunications)ATM Campus Network is presented in this *** network iscomposed of several small ATM switches in a distributed manner and will be connected tothe china Education and Research Network(CERNET).First,an architecture of BUPTATM Campus Network is *** the interworking and protocol conversion be-tween ATM network and existing 802.X LAN are ***,some of the typicalbroadband applications such as multimedia communications,virtual workgroups,remotevideo-teaching and LAN emulation are described.

关键词： ATM Campus network LAN CERNET Broadband services

Studies on Thermal Conductivity of Diamond Film

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High Technology Letters 1995年第1期1卷 91-94页

作者： Jingbiao, C. Hong, ch. Jifa, zh. Dayan, B. Rongchuan, F. Univ of Science and Technology of China Hefei China

Diamond films were prepared by electron-assisted chemical vapor deposition (EACVD) system, and the thermal diffusivities of the films with or without substrate were studied by use of photothermal deflection (PTD) technique. The results show that less non-diamond component and larger crystalline size result in higher thermal conductivity of CVD diamond film. The influence of substrate on the measurement of thermal conductivity of the film was investigated, and a simple two-layer heat conduction model is given to account for the influence and used to draw the thermal conductivity of the film from the effective thermal diffusivity of film/substrate system.

关键词： Diamond film Photothermal deflection Thermal conductivity Substrate

Embolization of brain arteriovenous malformations with squid co-polymer embolic material:Initial experience

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Journal of Interventional Medicine 2023年第4期6卷 175-178页

作者： Li Shyan ch'ng Zulkifli Zaki Ahmad Sobri Muda Radiology Department Faculty of Medicine UiTMSungai BulohMalaysia Radiology Department Hospital Sungai BulohSungai BulohMalaysia Radiology Department HSAASFaculty of Medicine and Health SciencesUniversiti Putra MalaysiaMalaysia Radiology Department Faculty of Medicine UiTM Sungai Buloh47000Malaysia

Objective:To analyze the safety and effectiveness of the ethylene-vinyl alcohol copolymer(EVOH)liquid embolic agent Squid(Emboflu,Switzerland)for the treatment of brain arteriovenous *** and procedures:Between April 2015 and July 2017,46 embolization treatments for brain arteriovenous malformations(BAVM)were performed in 25 patients using two Squid formulations(18 and 12).Six female and 19 male patients with a mean age of 34 years(range,9–62 years)were included.A total of 46 procedures were *** BAVMs were classified as Spetzler-Martin gradeⅡin 4 procedures,Ⅲin 27 procedures,and 1V in 15 *** the 25 patients,15 presented with hemorrhage,5 with seizures,and 5 with headache and *** BAVMs were located in the temporal lobe in 5 patients,parietal lobe in 7 patients,frontal lobe in 3 patients,posterior fossa in 6 patients,basal ganglia in 3 patients,and parasagittal lobe in 1 ***:The obliteration rate of the BAVMs ranged from 10%to 100%,with a mean of 33%.Most patients underwent their first or second embolization *** patients(8%)developed intracranial bleeding post procedure,with one death(2%).One patient(2%)experienced a seizure during the procedure;however,no intracranial bleeding was *** patients(15%)experienced perforations during catheter *** case(2%)of fractured catheter was recorded,but no significant complications were *** average volume of copolymer injected was 0.6 ml per *** procedures used the Squid-12 formulation,29 procedures used the Squid-18 formulation,and 3 procedures used a combination of Squid-12 and-18 ***:Squid is a safe and effective embolic agent for treating BAVMs.

关键词： Brain arteriovenous malformation Embolization Ethylene vinyl alcohol copolymer SQUID

Local Interactions and the Emergence of a Twitter Small-World Network

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Social Networking 2015年第2期4卷 33-40页

作者： Eugene ch’ng School of Computer Science Big Data and Visual Analytics Lab University of Nottingham Ningbo China Ningbo China

The small-world phenomenon is found in many self-organising systems. Systems configured in small-world networks spread information more easily than in random or regular lattice-type networks. Whilst it is a known fact that small-world networks have short average path length and high clustering coefficient in self-organising systems, the ego centralities that maintain the cohesiveness of small-world network have not been formally defined. Here we show that instantaneous events such as the release of news items via Twitter, coupled with active community arguments related to the news item form a particular type of small-world network. Analysis of the centralities in the network reveals that community arguments maintain the small-world network whilst ac-tively maintaining the cohesiveness and boundary of the group. The results demonstrate how an active Twitter community unconsciously forms a small-world network whilst interacting locally with a bordering community. Over time, such local interactions brought about the global emergence of the small-world network, connecting media channels with human activities. Understanding the small-world phenomenon in relation to online social or civic movement is important, as evident in the spate of online activists that tipped the power of governments for the better or worst in recent times. The support, or removal of high centrality nodes in such networks has important ramifications in the self-expression of society and civic discourses. The presentation in this article anticipates further exploration of man-made self-organising systems where a larger cluster of adhoc and active community maintains the overall cohesiveness of the network.

关键词： Social Network Analysis Social Movement Community #Freejahar Small-World Networks

‘Whole-molecule Disorder’ Refinement of 4-(4-Hydroxybenzylideneiminio)phenol Hemichloride Hemihydroxide

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chinese Journal of Structural chemistry 2011年第9期30卷 1283-1285页

作者： ng Seik Weng Department of chemistry University of Malaya

The two independent cations of the salt, [HO-C6H4-ch=NH-C6H4-OH]·1/2OH·1/2Cl, are both disordered about an axis connecting the two oxygen atoms at the para-positions of the aromatic rings, the disorder being in a 83：17 ratio in one cation and 91：9 in the other. The hydroxide and chloride anions are ordered. The treatment of the nearly ‘whole-molecule disorder’ by employing a small number of restraints is described. Crystal data： C13H12.5Cl0.5NO2.5, triclinic, P , a = 9.1731（4）, b = 9.2048（4）, c = 15.9144（7） , α = 104.822（1）, β = 90.077（1）, γ = 118.641（1）o and V = 1127.86（9） 3 at –173 K.

关键词： whole-molecule disorder

chemical constituents and pharmacological effects of durian shells in ASEAN countries:A review

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chinese Herbal Medicines 2021年第4期13卷 461-471页

作者： Yuan-fei zhan Xiao-tao Hou Li-li Fan zh.ng-cai Du Soo Ee ch'ng Siok Meng ng Khamphanh Thepkaysone Er-wei Hao Jia-gang Deng Faculty of Pharmacy Guangxi University of Chinese MedicineNanning 530200China Guangxi Key Laboratory of Efficacy Study on chinese Materia Medica Guangxi University of Chinese MedicineNanning 530001China Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues Guangxi University of Chinese MedicineNanning 530200China china-ASEAN Joint Laboratory for International Cooperation in Traditional Medicine Research Guangxi University of Chinese MedicineNanning 530200China Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases Guangxi University of Chinese MedicineNanning530001China CAIQ Test Innovation(Malaysia)Service Center Selangor 40150Malaysia Bio-Axis Healthcare Limited Hong Kong 999077China Institute of Traditional Medicine VientianeLao PDR

Durio zibethnus is mainly distributed in Southeast *** chinese medicine believes that durian shells have the effects of clearing heat and purging fire,nourishing yin and moisturizing ***,it is often used as a pharmaceutic food in the chinese folk to assist treating *** present,the chemical constituents isolated from durian shell include phenolic acids,phenolic glycosides,flavonoids,coumarins,triterpenes,simple glycosides and other *** pharmacological studies show that durian shell has many pharmacological activities,such as antioxidant,antiinflammatory,regulation of glucose and lipid *** chemical composition and pharmacological effects of durian shells are summarized in order to provide references for the further research and application of durian shell.

关键词： agricultural residues chemical constituents durian shell Durio zibethnus Murr. pharmacological effects

2001—2021年中国湿地碳汇研究进展与热点趋势分析

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湿地科学与管理 2024年第1期20卷 70-75页

作者：何苏南王凯郁凯孙果丽朱小梅陈环宇邢锦城乔干群卢明海江苏沿海地区农业科学研究所江苏盐城224000 江苏银宝控股集团有限公司江苏盐城224000

明确湿地碳汇研究进展对于寻找突破点和研究方向具有重要意义。利用CiteSpace软件对中国知网2001—2021年湿地碳含量研究的1183条文献进行了发文量、研究团队、研究机构、研究热点等的可视化分析,得出我国湿地碳汇研究特点和发展趋势。... 详细信息

明确湿地碳汇研究进展对于寻找突破点和研究方向具有重要意义。利用CiteSpace软件对中国知网2001—2021年湿地碳含量研究的1183条文献进行了发文量、研究团队、研究机构、研究热点等的可视化分析,得出我国湿地碳汇研究特点和发展趋势。结果表明:1)2005年后发文量显著增长,2017年达到顶峰后呈波动增加趋势;2)中科院东北地理与农业生态研究所、东北林业大学、北京师范大学是我国湿地碳汇研究的主要机构;3)我国湿地碳汇研究从湿地—气候变化的响应关系起步,发展到湿地土壤修复模式的探究,现阶段主要为碳中和背景下湿地固碳植物的选育与驯化;4)我国湿地碳汇研究稳步发展,但仍存在湿地碳汇计算综合评价体系缺乏、较少从湿地修复与保护双角度出发去考虑湿地碳库在“碳中和”中的相关影响问题。本研究指出了加强区域合作,结合本土化数据构建我国湿地碳汇参数库可能是未来研究的重要课题。

关键词：湿地碳汇 CiteSpace 可视化分析