oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 10 )

2018 ( 10 )

2017 ( 13 )

Custom range...

Search Results: 1 - 10 of 8515 matches for " Regina;Tabaru "
All listed articles are free for downloading (OA Articles)
Page 1 /8515
Display every page Item
Geographic distribution and morphometric differentiation of Triatoma nitida usinger 1939 (Hemiptera: Reduviidae: Triatominae) in Guatemala
Monroy, Carlota;Bustamante, Dulce María;Rodas, Antonieta;Rosales, Regina;Mejía, Mildred;Tabaru, Yuichiro;
Memórias do Instituto Oswaldo Cruz , 2003, DOI: 10.1590/S0074-02762003000100006
Abstract: triatoma nitida was found in 14 (0.4%) out of 3,726 houses located in six departments across guatemala, which were surveyed from 1994 to 1998 by the man-hour collection method. compared to previous information, the distribution of t. nitida in guatemala has increased from five to nine departments; the species is present in mild climates at altitudes from 960 to 1,500 m. fourteen percent of the intradomestic t. nitida were infected with trypanosoma cruzi. the species was often found in conjunction with other triatomines (t. dimidiata and rhodnius prolixus). the domestic and peridomestic presence of t. nitida in guatemala was rare, but occasionally this species was colonizing human-made constructions. t. nitida appears to have a low importance as chagas disease vector in guatemala, as indicated by its scarce presence in the domestic habitats and defecation patterns. however, it clearly has potential to become a chagas vector so we recommend an on-going study of the intradomestic presence of t. nitida following the control programs in guatemala. morphometric analysis of 47 t. nitida males from three localities showed quantitative differences between the populations, which indicates that geographic distance is an important factor in the structuring of t. nitida populations.
Epidemiology of Chagas disease in Guatemala: infection rate of Triatoma dimidiata, Triatoma nitida and Rhodnius prolixus (Hemiptera, Reduviidae) with Trypanosoma cruzi and Trypanosoma rangeli (Kinetoplastida, Trypanosomatidae)
Monroy, Carlota;Rodas, Antonieta;Mejía, Mildred;Rosales, Regina;Tabaru, Yuichiro;
Memórias do Instituto Oswaldo Cruz , 2003, DOI: 10.1590/S0074-02762003000300003
Abstract: a five-year domiciliary collection in the 22 departments of guatemala showed that out of 4,128 triatomines collected, 1,675 were triatoma dimidiata (latreille, 1811), 2,344 were rhodnius prolixus stal 1859, and only 109 were t. nitida usinger 1939. the chagas disease parasite, trypanosoma cruzi, was found in all three species. their natural infection rates were similar in the first two species (20.6%; 19.1%) and slightly lower in t. nitida(13.8%). however there was no significant difference in the infection rates in the three species (p = 0.131). t. dimidiata males have higher infection rates than females (p = 0.030), whereas for r. prolixus there is no difference in infection rates between males and females (p = 0.114). the sex ratios for all three species were significantly skewed. more males than females were found inside houses for t. dimidiata (p < 0.0001) and t. nitida (p = 0.011); a different pattern was seen for r. prolixus (p = 0.037) where more females were found. sex ratio is proposed as an index to show the mobility of t. dimidiata in different populations. t. dimidiata is widely distributed in the country, and is also the main vector in at least ten departments, but r. prolixus with higher vectorial capacity is an important vector in at least two departments.
Heavy quark and J/psi production at RHIC/PHENIX
Tsuguchika Tabaru,for the PHENIX Collaboration
Physics , 2006, DOI: 10.1088/1742-6596/50/1/042
Abstract: Single electrons from open heavy quarks and di-leptons from J/psi mesons have been studied systematically at RHIC/PHENIX using data from p + p, d + Au and Au + Au collisions at $\sqrt{s_{NN}}$ = 62.4 GeV, 130 GeV and 200 GeV. From the single electron study, the charm quark yield is found to scale with the number of binary collisions. This scaling has recently been confirmed using Au+Au collisions at 62.4 GeV. A new analysis shows that a high p_T suppression of single electrons is observed in Au + Au collisions at 200 GeV. This suppression suggests that heavy quarks lose significant energy in the medium. A weak rapidity dependence is seen in J/psi yields from d + Au data, which can be interpreted as a cold matter effect. We report also the results of a measurement of the spin alignment of the J/psi in the p_T range around 1.5 GeV/c.
Neptune′s Trojans
Tabaru00E9 Gallardo
Revista mexicana de astronomía y astrofísica , 2001,
Abstract: A numerical exploration of the dynamical evolution of hypothetical bodies located at 1:1 resonance with Neptune is performed. We roughly estimate a time-scale of some 100 Myrs for the destruction of the librations, so we cannot expect to find primordial Neptune′s trojans. Temporary satellite capture s were also observed.
Helicobacter Pylori Infections in Chronic Obstructive Pulmonary Disease
Ali Tabaru,Metin Gorguner,Metin Akgun,Mehmet Meral
Eurasian Journal of Medicine , 2012,
Abstract: Objective: We aimed to investigate the prevalence of Helicobacter pylori (H. pylori) in patients with chronic obstructive pulmonary disease (COPD) using the C-14 urea-breath test (C14UBT) and to determine whether there is an association between H. pylori infection and the severity of COPD. This is the first report in the literature of the use of C14UBT to investigate the prevalence of H. pylori in patients with COPD.Materials and Methods: Fifty subjects with COPD (38 males and 12 females, aged 61±10 years) and 20 control subjects (10 males and 10 females, aged 55±11 years) were evaluated. C14UBT was used to determine H. pylori infection. Results: The prevalences of H. pylori infection in subjects with COPD and in controls were 72% and 65%, respectively (p=0.56). Forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) values were significantly higher in the H. pylori-infected subjects with COPD than in the uninfected subjects (p=0.008 and p=0.006, respectively). Conclusion: The presence of H. pylori infection in COPD patients affects pulmonary functions, but the effects of H. pylori infection on the respiratory system and COPD are not clear.
Empowerment Online: Feminist Adult Learning Strategies  [PDF]
Regina Juchun Chu
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.53022
Abstract:

The purpose of this is to investigate how adult female learners constitute their perceptions of self and learning behavior in an internet learning environmentweblog. Based on previous qualitative research method and literature review, this study intended to develop and validate a feminist adult learning strategy scale (FALSS) to understand the women’s learning strategy by applying weblogs. 417 valid data from the participants in two studies (exploratory and confirmatory factor analysis) were analyzed for the purpose. The results of these studies supported a 15-item, 4-factor FALSS: Empowerment Attempt, Sharing Expe- riences, Participatory Learning, and Critical Thinking and Open-Mindedness.

Gender Differences in Perceived Equality and Personal Knowledge System Development on Personal Learning Network  [PDF]
Regina Juchun Chu
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.212008
Abstract: The purpose of this research is to investigate how personal learning network (PLN) facilitates individuals to build up their own epistemologies of the interpretation for their knowledge system. Based on three interviews and literature reviews, this study intends to develop and validate a personal epistemology development scale (PEDS) on PLNs to understand learner knowledge constructions. 561 valid data from the participants in two studies (exploratory and confirmatory factor analysis) were analyzed for the research purpose. The results of these studies supported an 18-item, 4-factor PEDS: description, analysis, vision, and strategy. The results also reveal that equality significantly influences the process of theory development especially for the stage of vision. The result moreover shows gender differences existing in the perception of equality on PLN environment, in the description and in the vision stages.
Forces in Struggle in the Country and the City Today in Brazil: Beyond a Dualistic Understanding  [PDF]
Célia Regina Vendramini
Current Urban Studies (CUS) , 2015, DOI: 10.4236/cus.2015.31006
Abstract: Is it still possible to distinguish the line that separates the country and the city? How do rural and urban workers produce their life today? What are the characteristics that distinguish or approximate them? What movements of resistance have been observed? These questions guide our reflections about the relationship between urban and rural space. Based on a study in the urban pe-riphery and in encampments and settlements of the Landless Rural Workers Movements in Brazil, we seek to understand alternative forms of occupation of space today.
Presentation of a Validated Checklist as a Tool for Assessing, Preventing and Managing Food Waste in Foodservices  [PDF]
Tania Regina Kinasz, Regina Baptista Reis, Tania Beninga Morais
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.611102
Abstract: More researches are needed to identify the relevant factors influencing the generation of food waste and devise preventive strategies. The objective of this study is to develop a checklist to assess the good management practices that have a positive impact on eliminating or minimizing food waste in food service units. A theoretical list of relevant factors impacting the generation of food waste during meal production is developed, taking into account administrative planning, receipt and storage of foods, and the preparation and distribution of meals by food service units. For each factor, several administrative and/or technical actions are identified. To validate the content, this list is submitted to a ten-member expert panel for a final evaluation. The factor (and its respective actions) is considered relevant if 80% of the expert panel members agree on its relevance. All actions employ a dichotomous response of Yes/No. Affirmative responses are expected because these actions are considered to be good management practices that have a positive impact on eliminating or minimizing food waste. Following the panel approval process, a checklist of 12 factors and 102 actions is detailed. The conceptual structure of the checklist for food waste management presented in this study enables a comprehensive understanding of the factors that impact food waste, providing a theoretical basis for future research into the relative importance of the relevant factors and actions identified in this study.
Use of Male Condoms among Adolescents with Free Access at Emergency Contraception—Study among Students from the Public Education System of the Sao Paulo, Brazil  [PDF]
Regina Figueiredo, Neuber Jose Segri
World Journal of AIDS (WJA) , 2014, DOI: 10.4236/wja.2014.42023
Abstract:

The research conducted in public schools in Sao Paulo city, Brazil, studied the awareness and use of emergency contraception (EC) and its possible implications on the condoms use. Among the 4929 students, 55.6% had already had sex, 19.5% had got pregnant and 7.3% had had abortions. Condoms were used by 88.6% and were options for those who did not have a steady relationship. The EC was used by 30.3% after a faulty condom usage, and by the older ones, with a steady partner. It is needed to be given contraceptive alternatives to reduce the risk and provide access to other contraceptives.

Page 1 /8515
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.