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香港前肠外科现状

中华普通外科杂志 2024年第6期39卷 418-422页

作者：黄宇匡罗英杰香港大学临床医学院外科学系中国

前肠是指胚胎时期的消化道上部,进一步发育成为食管、肺、胃、肝脏、胰腺及部分十二指肠等器官.在中国香港,针对治疗和研究前肠相关良性疾病的前肠外科已经拥有相对成熟的技术和先进仪器配合,包括采用一系列的辅助检查方法,率先开展新... 详细信息

前肠是指胚胎时期的消化道上部,进一步发育成为食管、肺、胃、肝脏、胰腺及部分十二指肠等器官.在中国香港,针对治疗和研究前肠相关良性疾病的前肠外科已经拥有相对成熟的技术和先进仪器配合,包括采用一系列的辅助检查方法,率先开展新颖的抗反流手术方式,如机器人辅助下食管裂孔疝修补、磁珠环括约肌增强术等.目前亚洲各地学者开始越来越重视前肠相关疾病,本文通过介绍中国香港前肠外科情况促进与国际进行学术交流合作,谋求与亚太地区进一步共同建设亚洲前肠相关协会,分享诊治经验和学术成果.

关键词：胃食管反流疝,食管裂孔肥胖症机器人贲门失驰缓症前肠外科

LIOUVILLE TYPE THEOREM FOR THE STATIONARY EQUATIONS OF MAGNETO-HYDRODYNAMICS

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Acta Mathematica Scientia 2019年第2期39卷 491-497页

作者： simon SCHULZ Mathematical Institute University of Oxford

We show that any smooth solution(u, H) to the stationary equations of magnetohydrodynamics belonging to both spaces L^6(R^3) and BMO^(-1)(R^3) must be identically *** is an extension of previous results, all of which systematically required stronger integrability and the additional assumption ▽u, ▽H∈L^2(R^3), i.e., finite Dirichlet integral.

关键词： Liouville theorem Caccioppoli inequality Navier-Stokes equations MHD

Some remarks and problems on complex homogeneous domains Dedicated to Professor Sheng GONG on the occasion of his 75th birthday

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Science China Mathematics 2006年第11期49卷 1655-1661页

作者： GINDIKIN simon Department of Mathematics Hill Center Rutgers University110 Frelinghysen RoadPiscatawayNJ 088548019USA

We discuss some problems on rigidity of canonical realizations of complex homogeneous domains at Cn

关键词： complex homogeneous domain, Siegel domain, Cartan domain, homogeneous cone, tube domain, Cauchy kernel.

Prevalence of Precancerous Lesions Based on Digital Cervicography with VIA/VILI among Women Positive for High-Risk Human Papillomavirus Serotypes: A Screening Center-Based Study in Cameroon

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Open Journal of Obstetrics and Gynecology 2024年第6期14卷 967-978页

作者： Jeffrey-Lewis Nzang Cliford Ebontane Ebong simon Manga Florence Manjuh Félix Essiben Isidore Tompeen Judith Seungue Serge Robert Nyada Jeanne Hortence Fouedjio Ymele Fouelifack Julius Sama Dohbit Kloukanmey Zonal Hospital Mdecins Sans Frontires Kloukanmey Benin Faculty of Medicine and Biomedical Sciences University of Yaound 1 Yaound Cameroon Gynecology and Obstetrics Unit Central Hospital of Yaound Yaound Cameroon Womens Health Program Cameroon Baptist Convention Health Services Yaound Cameroon Department of Obstetrics and Gynaecology Gyneco-Obstetric and Pediatric Hospital of Yaound Yaound Cameroon Expanded Program of Immunization Ministry of Health Yaound Cameroon Department of Obstetrics and Gynaecology Gynaecological Endoscopic Surgery and Human Reproductive Teaching Hospital Yaounde Cameroon Department of Obstetrics and Gynaecology University of Dschang Dschang Cameroon Higher Institute of Medical Technology Nkolondom Yaound Cameroon

Background: Since 2021, high-risk Human Papilloma Virus (HR-HPV) testing has been the recommended screening test for cervical cancer for all settings;either used alone in a “test and treat” strategy, or with a triage test, with or without biopsy, before treatment. Cameroon has rolled out immunization against HPV 16 and 18, but studies show a higher prevalence of non-16/18 HR-HPV types. Objectives: Determine the prevalence of precancerous lesions, in women with HR-HPV infection and evaluate association of digital cervicography (DC) VIA/VILI positivity with HPV serotype, as a measure of their contribution to precancer and cancer incidence. Methodology: The study was cross-sectional, descriptive, and analytic. It took place at the Etoug-Ebe and Ekoudoum Baptist Hospitals in Yaoundé, during the period April-September 2022. We reviewed the records of women screened for cervical cancer between February 2020 and December 2021 and evaluated the prevalence of lesions on digital cervicography (DC) with VIA/VILI for women positive for HR-HPV serotypes. The data were analyzed using SPSS version 20.0 for Windows. P values Results: We identified 315 cases with a positive HR-HPV deoxyribonucleic acid (DNA) test, 224 (71.1%) had a DC VIA/VILI triage test done. Of these, 30 (13.4%) women had a positive DC VIA/VILI, with five women (2.2%) having lesions suggestive of cancer. Out of 11 cases positive for HPV 16 alone, 05 (45.5%) had a positive DC VIA/VILI test. Of the 14 cases positive for HPV 18 alone, 03 (21.4%) had a positive VIA/VILI, meanwhile only 19 (10.7%) of the 177 cases positive for non-16/18 HPV had a positive VIA/VILI test. Conclusion: A high proportion of women (13.4%) with HR HPV had a positive DC VIA/VILI, with a significant proportion (2.2%) having lesions suggestive of invasive cervical cancer HR-HPV serotype was associated with DC VIA/VILI positivity;HPV 16 had the strongest association (45.5%), followed by HPV 18 (21.4%), and non-16/18 HR-HPV (10.7%), suggesting a

关键词： High-Risk Human Papillomavirus Precancerous Digital Cervicography VIA/VILI Serotype

The Quantum Consistency of the Ten-Dimensional Heterotic String Effective Action

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Communications in Theoretical Physics 2011年第5期55卷 857-862页

作者： simon Davis Research Foundation of Southern California

The finiteness of superstring theory at each order in perturbation theory is considered with respect to the ten-dimensional effective action. The quantum consistency of the ten-dimensional superstring effective action is confirmed with an analysis of the perturbative expansion of the quartic sector. It is found to be compatible with the finiteness of reduced four-dimensional theory. Furthermore, implications for the validity of superstring perturbation theory at lower energies is considered.

关键词： effective action gauge potential renormalizability

Prevalence and Study of the Clonality of Extended-Spectrum Beta-Lactamase-Producing Klebsiella pneumoniae Strains in Neonatology at the University Hospitals of Abidjan by the Pulsed Field Gel Electrophoresis and the Quantitative Antibiogram

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Advances in Microbiology 2024年第9期14卷 416-429页

作者： Valérie M’Bengue Gbonon Sidjè Arlette Afran Stanislas Assohoun Egomli Djeda Franck Arnaud Gnahoré Aboubakar Sylla N’Golo David Coulibaly Nathalie Guessennd Assanvo simon-Pierre N’Guetta Mireille Dosso Antibiotics Natural Substances and Anti-Infectious Resistance Surveillance Unit Pasteur Institute of Cte dIvoire Abidjan Cte dIvoire Molecular Genetics Platform Pasteur Institute of Cte dIvoire Abidjan Cte dIvoire Genetics and Species Improvement Laboratory Flix Houphout Boigny University Abidjan Cte dIvoire Mechanics and Computer Sciences Laboratory Flix Houphout Boigny University Abidjan Cte dIvoire Biology and Health Laboratory Flix Houphout Boigny University Abidjan Cte dIvoire Molecular Biology Platform Pasteur Institute of Cte dIvoire Abidjan Cte dIvoire

Background: ESBL-producing strains of Klebsiella pneumoniae, one of the main causes of nosocomial and hospital-acquired infections, are commonly associated with therapeutic impasses. Surveillance of these multidrug-resistant pathogens is a crucial tool for controlling and preventing infections. This surveillance involves the use of appropriate molecular and phenotypic typing techniques. The choice of techniques is based on criteria such as discriminatory power, intra- and inter-laboratory reproducibility, epidemiological concordance, ease of use and cost. The aim of our study was to identify clusters of Extended-Spectrum Beta-Lactamase-producing Klebsiella pneumoniae (ESBL-K. pneumoniae) strains circulating in neonatology using quantitative antibiogram (QA) and Pulsed Field Gel Electrophoresis (PFGE). Materials and Methods: This cross-sectional study included 55 K. pneumoniae strains isolated from a total of 513 samples. These various samples are taken from newborns, healthcare personnel, and the environment. K. pneumoniae identification followed standard bacteriological procedures and was confirmed using the Vitek® 2 (bioMérieux). The detection of the ESBL phenotype was performed using the synergy test. QA and PFGE were used to identify clonal relationships between the various strains isolated. Concordance between these two methods was assessed by calculating Cohen’s KAPPA coefficient and Simpson’s diversity index. Results: Among the 55 K. pneumoniae strains included in this study, 58.2% (32/55) were found to be Extended-Spectrum Beta-Lactamase (ESBL) producers. Most of these strains were isolated from neonatal samples (blood samples and rectal swabs). The quantitative antibiogram method applied to 28 out of the 32 ESBL-producing strains revealed that the isolates were grouped into 5 clusters. Pulsed Field Gel Electrophoresis performed on a total of 16 ESBL-producing strains showed the existence of four profiles. A perfect concordance was observed between the two m

关键词： Resistance-Clone-Klebsiella pneumoniae-Pulsed Field Gel Electrophoresis-Quantitative Antibiogram

Arsenobetaine and thio-arsenic species in marine macroalgae and herbivorous animals: Accumulated through trophic transfer or produced in situ?

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Journal of Environmental Sciences 2016年第11期28卷 131-139页

作者： simon Foster William Maher Ecochemistry Laboratory Institute for Applied Ecology University of Canberra

Arsenobetaine（AB） and thio-arsenoribosides were measured in common macroalgae species（8 phaeophyta, 4 rhodophyta and 2 chlorphyta）, along the Australian south east coast line. As well, arsenic species profiles were measured for two common marine herbivores, the sea urchin Centrostephanus rodgersii and the fish Odax cyanomelas that graze on these macroalgae to understand if trophic transfer of these species would account for their presence in marine herbivores. AB was found in seven of the fourteen macroalgae species investigated but does not contributed significantly to any of the macroalgae arsenic content（0.01-1.2 μg/g）. AB was found in only two of the brown macroalgae and all the red and green macroalgae（with the exception of Corallina officinalis）. Thio-arsenic species were found sporadically, but not in high concentrations in any of the macroalgae *** present in macroalgae is likely to be associated with epiphytic organisms while thio-arsenoribosides are likely to be produced by decaying parts of damaged macroalgae.A laboratory feeding experiment in which the herbivorous gastropod, Austrocochlea constricta, was fed macroalgae containing thio-arsenoribosides for a 24 hr period every three days showed that these are readily accumulated over a short period. Thio-arsenoribosides in herbivores are therefore probably obtained through trophic transfer. Some AB is also obtained through trophic transfer; however, the presence of trimethylated arsonioribosides,a hypothesized precursor of AB formation in herbivores, suggests that some AB is produced within herbivores from the transformation of arsenoribosides accumulated from their diet.

关键词： Arsenobetaine Arsenic Metabolism Thio-arsenosugars Macroalgae Gastropods

Holomorphic Factorization of Superstring Scattering Amplitudes

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Communications in Theoretical Physics 2011年第1期55卷 1-5页

作者： simon Davis Research Foundation of Southern Califoria

The holomorphic factorization of the superstring partition function is verified at arbitrary genus. The evaluation of scattering amplitudes and the implications of genus-dependent estimates on the string coupling are ... 详细信息

关键词： holomorphic factorization Ramond measure supermoduli space coordinate

Univalent Functions and Diff(S^1)/S^1

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Acta Mathematica Sinica,English Series 2012年第6期28卷 1233-1236页

作者： simon DAVIS Research Foundation of Southern California

The relation between Diff（S^1）/S^1 and the space of univalent analytic functions on the disk is elucidated and shown to provide upper bounds for the volumes of exhaustive approximations to an analytic submanifold of an infinite-dimensional space. The maximum magnitudes of the coefficients in the series expansions of univalent superanalytic functions on the superdisk are inferred.

关键词： Univalent diffeomorphism group superanalytic functions