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240 articles for “cross-section”
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Research ArticleOpen accessIn the abstractCo-expression of Apoptosis-Related Molecules on Activated CD8+ CD38+ T-cells is Associated with HIV-1 Disease ProgressionJosé W. Rodríguez, Luis A. Rodríguez, Griselle Font et al.CD8+ T cells play a major role in controlling HIV-1 infection through the release of soluble lytic and non-lytic antiviral factors. Their decrease or defective function contributes to the HIV-1 disease progression. HIV-1 disease progression has been associated with a remarkable increase of CD38 expression on CD8+ T-cells. It has been also documented that a significant distribution of HIV-specific CD8+T-cells … …American Journal of Infectious Diseases, Vol. 3, Issue 4 · 31 Dec 2007 · 7,009 accessesView PDFCite
Research ArticleOpen accessIn the abstractStress and Job Satisfaction among Air Force Military PilotsKhodabakhsh Ahmadi, Kolivand AlirezaStress induces impairment of performance is a relatively common issue in pilots of military aviation. The present study aimed at gathering preliminary data on the relationship between stress and job satisfaction among military pilots, so determine to what extent military pilots suffering from job satisfaction. This study was cross- sectional in design and used survey methodology. The survey was offered … …Journal of Social Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 10,957 accessesView PDFCite
Research ArticleOpen accessIn the abstractIncome Distribution and Health Status: Econometric Evidence from OECD CountriesVasudeva N.R. MurthyThis research note, using a cross-sectional sample consisting of 27 Organization for Economic Co-operation and Development countries (OECD) for the reference year 2002, empirically examines the relationship between health status as measured by infant mortality and the degree of income inequality, given the effect of certain controlled variables. The empirical findings based on the estimation by robust econometric methods, show … …American Journal of Applied Sciences, Vol. 4, Issue 4 · 30 Apr 2007 · 7,251 accessesView PDFCite
Research ArticleOpen accessIn the abstractFinite Element Simulation and Parametric Studies of Perfobond Rib ConnectorSuhaib Yahya Kasim Al-Darzi, Ai Rong Chen, Yu Qing LiuSimulating the push-out test and conducting parametric study using finite element model are conducted using perfobond connectors. The finite element model was verified through comparing with push-out test results. The verified finite element model was then used to conduct parametric study aiming to investigate the effect of several parameters, such as height and thickness of connector, cross sectional area and … …American Journal of Applied Sciences, Vol. 4, Issue 3 · 31 Mar 2007 · 8,218 accessesView PDFCite
Research ArticleOpen accessIn the abstractValidity and Reliability of the Short Form- 36 Items Questionnaire as a Measure of Quality of Life in Elderly Iranian PopulationSeyed-Reza Eshaghi, Mohammad Arash Ramezani, Armindokht Shahsanaee, Arash PooyaThe utility of The SF-36 questionnaire for evaluation of health related quality of life was not clear in elderly people. The Cross-Sectional study was designed and Iranian version of The SF-36 was administered to random sample of 100 old subjects over 60 years old. Finding showed good internal consistency over 0.7 for all subscales of questionnaire. Convergent validity was obtained … …American Journal of Applied Sciences, Vol. 3, Issue 3 · 31 Mar 2006 · 7,959 accessesView PDFCite
Research ArticleOpen accessIn the abstractFinite Element Study Using FE Code (PLAXIS) on the Geotechnical Behavior of Shell FootingsBujang B.K. Huat, Thamer A. MohammedThis study describes a study on the geotechnical behavior of shell footing using a non-linear finite element analysis with a finite element code, PLAXIS. The shell footing is found to have a better load carrying capacity compared with the conventional slab/flat footing of similar cross sectional area. The FE analysis also showed a reasonably good agreement with the laboratory experimental … …Journal of Computer Science, Vol. 2, Issue 1 · 31 Jan 2006 · 7,884 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Incidence Rate of Carcinoid Tumors in Appendectomy Specimens in Iran 1993-2003Mahammad-Arash Ramezani, Mehdi Hayatbakhsh, Mohammad-Bagher Daneshtalab et al.Carcinoid tumors are the most common neoplasm of the appendix vermiform and appear to have increased in incidence in the past 20 years. In the cross sectional study 5048 appendectomy specimens at 10 years periods of year -1993 to 2003- were evaluated in pathology department. Twelve Carcinoid tumor of the appendix were identified (0.2%). There was female rate higher than … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 6,805 accessesView PDFCite
Research ArticleOpen accessIn the abstractSupporting the Josephson Interpretation of Low Energy Nuclear Reactions and Stabilization of Nuclear WasteF. Osman, H. Hora, X. Z. Li et al.Brian Josephson appealed at the meeting of the Nobel Laureates July 2004 against the ignorance of physicist to the phenomenon of cold fusion. Though there are good reasons against many publications on this topic but not for all what was reported. It seems to be indicated to summarize the following serious, reproducible and confirmed observations on the reactions of protons … …American Journal of Applied Sciences, Vol. 2, Issue 6 · 30 Jun 2005 · 7,162 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamical Properties Analysis of Frictional Winding Mechanism with Bobbin Elastic SupportMohammed A. Alnawafleh, Faisal M. Al-GhathianA mathematical model of the Frictional Winding Mechanism (FWM) with bobbin elastic supports for a search of optimal structural and physical parameters for developing new and updating existing FWMs has been carried out. The model was derived from bobbin equipped with pendulum suspension for forming cylinder shaped packages. In the derivation method it was considered that the model corresponds the … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 6,879 accessesView PDFCite
Research ArticleOpen accessIn the abstractHIV/AIDS Knowledge and Sexual Behavior Among Junior Secondary School Students in South AfricaKarl Peltzer, Supa PromtussananonThe aim of the study was to assess HIV/AIDS knowledge and sexual behaviour among jun-ior Secondary School students in South Africa using a cross-sectional survey design. The sample con-sisted of 3150 students, with 44.1% were male and 55.9% female students. Their mean age was 15.75 yrs (SD=1.61) ranging from 13 to 24 years chosen from 150 schools in South Africa. … …Journal of Social Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 7,770 accessesView PDFCite