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Error Control in Multi-Element Generalized Polynomial Chaos Method for Elliptic Problems with Random Coefficients

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Communications in Computational Physics 2009年第2期5卷 793-820页

作者： Xiaoliang Wan George em Karniadakis Division of Applied Mathematics Brown UniversityProvidenceRI 02912USA

We develop the theory for a robust and efficient adaptive multi-element generalized polynomial chaos(ME-gPC)method for elliptic equations with random coefficients for a moderate number(O(10))of random *** employ loworder(p≤3)polynomial chaos and refine the solution using adaptivity in the parametric *** first study the approximation error of ME-gPC and prove its *** subsequently generate local and global a posteriori error *** order to resolve the error equations efficiently,we construct a reduced space using much smaller number of terms in the enhanced polynomial chaos space to capture the errors of ME-gPC *** on the a posteriori estimators,we propose and implement an adaptive ME-gPC algorithm for elliptic problems with random *** results for convergence and efficiency are also presented.

关键词： Stochastic PDE a posteriori error estimate elliptic problems adaptive numerical methods uncertainty quantification

A novel package system based on an EBV replicon vector for producing high titer recombinant adeno-associated virus vector

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Chinese Science Bulletin 1997年第20期42卷 1741-1744页

作者： Yan, ZY Yao, em Zhang, T Shu, YL Hou, YD Chinese Acad Prevent Med Inst Virol State Key Lab Mol Virol & Genet Engn Beijing 100052 Peoples R China

ADENO-ASSOCIATED virus (AAV) was a human parvovirus considered as a gene delivery vehiclefor human gene therapy. Recombinant AAV vector (rAAV) could mediate the foreign DNAintegration into chromosome and establish a stable expression in the infected cells. As a viraltransduction vector, rAAV was superior to the traditional retrovirus vector for its high *** pathogenicity, and capacity of infecting postmitosis cells. The current strategy for produc-

关键词： recombinant AAV vector EBV replicon vector package cell line.

Risk Factors for Cardiovascular Disease among Hotel Workers, Bohicon, Benin

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Occupational Diseases and Environmental Medicine 2024年第2期12卷 130-141页

作者： Mênonli Adjobimey Rose Mikponhoué eméline Gbaguidi Esdras Hountohotegbè Hélène Sacca Paul Ayélo Vikkey Antoine Hinson Unité de Recherche et d&#8217Enseignement en Sant&#233 au Travail et Environnement FSS Cotonou Cotonou Benin Service de Santé au Travail du Centre National Hospitalier Universitaire de Pneumo Phtisiologie de Cotonou Cotonou Benin Laboratoire d’ Epid&#233miologie des Maladies Chroniques et Neurologiques FSS Cotonou Benin

Introduction: Non-communicable diseases (NCDs) are on the increase in several sectors of activity. The aim of the study was to determine the frequencies of cardiovascular risk factors (CVRF) and factors associated with hypertension among hotel workers in the city of Bohicon. Methods: This was a descriptive and analytical cross-sectional study conducted in the period from December 2018 to January 2019. The variables studied were sociodemographic, occupational, anthropometric and behavioral. Participant recruitment was exhaustive. A standardized questionnaire inspired by the STEPS-WHO questionnaire was used for data collection. After the descriptive analysis, a bivariate analysis was performed using Pearson’s Chi-square test or Fisher’s test at the 5% threshold. Results: A total of 101 workers, 53 (52.47%) of them male, participated in the study. The mean age was 30.60 ± 8.20 years, with extremes of 18 and 55 years. The frequencies of the main risk factors were: 68.32% sitting position > 6 hours/day;38.61% shift work;21.78% high psychological demand, 82.18% low decision latitude, 24.75% low social support, 21.78% occupational stress;7 (6.93%) harmful alcohol consumption;6.93% tobacco consumption;48.51% insufficient physical activity;98.02% insufficient fruit and vegetable consumption;59.41% overweight;14.85% HTA. Factors associated with hypertension were: sex, age and marital status. Conclusion: Occupational factors need to be taken into account when assessing CVRFs. NCD control programs are needed in all sectors of activity. A larger study is needed in the hotel sector.

关键词： FDRCV Occupational Factors Hypertension Hotels Benin

Detection of influenza A virus RNA in birds by optimized Real-Time PCR system

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Asian Pacific Journal of Tropical Medicine 2010年第5期3卷 337-340页

作者： Ilinykh Ph A Shestopalova em Khripko Yu I Durimanov AG Sharshov KA Shestopalov AM State Research Center of Virology and Biotechnology Vector RussiaNovosibirsk region630559 Koltsovo

Objective:To evaluate the use of Real-Time PCR system based on specific amplification of matrix protein gene fragment for influenza A virus RNA detection in cloacal swabs from wild ***:Sensitivity,specificity and reproducibility of analysis results were identified. Study of cloacal swabs from wild birds for influenza A virus presence was ***: Reproducibility of low concentrations of virus detection in samples by Real-Time PCR was significantly higher than that of detection based on cytopathic effect of viruses grown on MDCK cell ***:Real-Time PCR system for influenza A virus RNA detection is developed and applied for virus surveillance study.

关键词： Influenza A virus RNA Real-Time PCR MDCK cell culture Virus surveillance Wild birds

Utilization of traditional healers for treatment of malaria among female residents in Makurdi city and its environs

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Asian Pacific Journal of Tropical Medicine 2010年第7期3卷 563-566页

作者： Jombo GTA Mbaawuaga em Denen Akaa P Dauda AM Eyong KI Akosu JT Etukumana EA Department of Medical Microbiology and Parasitology College of Health SciencesBenue State UniversityPMB 102119 MakurdiNigeria Department of Biological Sciences Faculty of ScienceBenue State UniversityPMB 102119 MakurdiNigeria Department of Surgery College of Health SciencesBenue State University MakurdiNigeria Department of Histopathology Faculty of Medical SciencesUniversity of JosJosNigeria Department of Paediatrics College of Medical SciencesUniversity of CalabarCalabarNigeria Department of Community Medicine College of Medical SciencesUniversity of JosNigeria Department of Family Medicine University of Uyo Teaching Hospital UyoNigeria

Objective:To ascertain the role of traditional healers in malaria treatment and its impact on control of the ***:The study was cross-sectional in ***-run structured and semi-structured questionnaires were either interviewer or self administered to adult women aged 18 years old and *** holds were selected using systematic random sampling *** such as age,educational level,marital status,occupation and methods of malaria treatment were *** group discussions about beliefs and perceptions on utilization of traditional healers and in depth discussions on treatment and control of malaria were also carried ***:Of the 2 075 respondents studied,49.7%(n=1 031) utilized traditional healers for treatment of malaria,including 16.7%(n=172) utilizing traditional healers strictly while 83.3%(n=859) combining it with other treatment methods such as hospital/clinic, pharmacy/chemist shop,herbs or spiritual *** major contributors to utilization of traditional healers were:illiteracy and ignorance,poverty,unemployment/underemployment and slow pace of the comprehensive package implementation of the "roll back malaria"(RBM) programme initiate in the ***:Health education should be intensified while adequate facilities put in place to commence home management of malaria and probable free distribution of the artemisinin-based combination therapy(ACT).

关键词： Traditional healers Utilization Malaria treatment Adult-women

Relationship between Inter Canine Width and Inter Alar Width, Inter Commissural Width, and Inter Canthal Distance: A Pilot Study

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Open Journal of Stomatology 2024年第6期14卷 279-290页

作者： Grevisse Bindele Ndombolo Augustin Mantshumba Milolo Fidele Nyimi Bushabu em Kalala Kazadi Pierrot Kumpanya Ntumba Jean Marie Kayembe Bukama Elias Lubadi Tshilumba Jean Paul Sekele Isouradi Department of Prosthodontics Teaching Hospital of Kinshasa University Kinshasa Democratic Republic of the Congo National Center of Research in Dental Sciences Kinshasa Democratic Republic of the Congo Department of Oral and Maxillofacial Surgery Teaching Hospital of Kinshasa University Kinshasa Democratic Republic of the Congo Department of Periodontology Teaching Hospital of Kinshasa University Kinshasa Democratic Republic of the Congo Department of Operative Dentistry Teaching Hospital of Kinshasa University Kinshasa Democratic Republic of the Congo

The aim of this study was to determine the relationship between inter canine width (ICW) and inter alar width (IAW), inter commissural width (ICoW), and inter canthal distance (ICaD) in Bantu population. Materials and Methods: It was a pilot study included all participants who were aged at least 18 years, without a history of orthodontics treatment from Prosthodontics Department, Faculty of Dental Medicine, University of Kinshasa. The Ethics committee of the National Center of Research for Dental Sciences in DR Congo approved the study protocol (CNRSB 1504.218). The participants medical records were obtained from the interview and dental examination. Nature of the study was explained with participant information sheet, and an informed consent of all participants was obtained. The inclusion criteria were no missing maxillary and mandibular teeth, no diastema, and no anterior restorations, 18 years old before enrollment in the study. The exclusion criteria were inability to meet the above requirements, pregnancy, and refusal to participate in the study. The inter-canine width (ICW), inter alar width (IAW), inter canthal distance (ICaD) and inter-commissural width (ICoW) of each participant were measured with a digital Vernier caliper (Mitutoyo, UK Ltd.,) (0.01 mm) three times and the average value was recorded. The inter canthal distance (ICaD) was measured without applying pressure by bringing the recording parts of the caliper just in contact with the medial angle. The inter alar width (IAW) was marked with a fine marked pencil on the widest outer surface of the alae of the nose on either side or width. Those two points were measured without applying pressure by bringing the recording parts of the caliper just in contact with the outer surface. The participant was told to stop breathing shortly to avoid any change in shape of the nose. The inter-commissural width (ICoW) was determined by measuring the maxillary lip vermilion from commissure to commissure without the

关键词： Relationship Inter-Canine Width Inter Alar Width Inter Canthal Distance Inter Commissural Width

Mechanism of frost heave by film water migration under temperature gradient

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Chinese Science Bulletin 1997年第15期42卷 1290-1294页

作者： Xu, XZ Wang, JC Zhang, LX Deng, YS Chuvilin, em Yershov, ED Ishizaki, T Fukuda, M State Key Laboratory of Frozen Soil Engineering Lanzhou Institute of Glaciology and Geocryology Chinese Academy of Sciences Lanzhou China Geological Faculty of Moscow University Russia Institute of Low Temperature Science Hokkaido University Japan

IT is well known that there exists unfrozen film water in frozen soils due to the action of sur-face energy among soil particles and frost heave occurs by water migration under the tempera-ture gradient. The problem is how to determine the amount of frost heave quantitatively. The amount of frost heave induced by ice segregation can be calculated by the following e-quations:

关键词： temperature gradient film water frost heave.