130 research outputs found

    Physiological antioxidant system and oxidative stress in stomach cancer patients with normal renal and hepatic function

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    Role of free radicals has been proposed in the pathogenesis of many diseases. Gastric cancer is a common disease worldwide, and leading cause of cancer death in India. Severe oxidative stress produces reactive oxygen species (ROS) and induces uncontrolled lipid peroxidation. Albumin, uric acid (UA) and Bilirubin are important physiological antioxidants. We aimed to evaluate and assess the role of oxidative stress (OS) and physiological antioxidant system in stomach cancer patients. Lipid peroxidation measured as plasma Thio Barbituric Acid Reactive substances (TBARS), was found to be elevated significantly (p=0.001) in stomach cancer compared to controls along with a decrease in plasma physiological antioxidant system. The documented results were due to increased lipid peroxidation and involvement of physiological antioxidants in scavenging free radicals but not because of impaired hepatic and renal functions

    Performance of PIXE Technique through a Geochemical Analysis of High Grade Rocks

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    It has been an argument that some of the elements present in geological material by using PIXE analysis are purely determined or could not be determined at all, due to various reasons including the matrix. It is felt that a systematic investigation needs to be designed and implemented to understand the limitation of PIXE in certain elements. The high-grade rocks selected are analyzed both by PIXE as well as AAS and the results are authenticated by using a USGS reference material, Basalt, studies of literature. It is believed that the accuracy of problematic elements, especially from high grade rock can be improved and the conditions of PIXE can be standardized for various elements under different combinations. The reasons behind the poor performance of Proton Induced X- ray Emission in case of certain elements have been established

    Effect of Temperature on Free Vibration of Functionally Graded Plate With Cutout

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    Present article performs the parametric study on vibration characteristics of functionally graded (FG) plate with central hole in thermal environment. ANSYS Parametric Design language is used in developing Finite element model and discretization of the material is done using an eight-node serendipity shell element. Displacement field of the present model is developed using first-order shear deformation theory (FOSDT) with six degrees of freedom. Frequency responses are extracted using Block Lanczos eigenvalue extraction method. To show the accurateness of the  model developed convergence study is done for various mesh sizes to obtain the suitable mesh density. Present results which are computed are compared and validated with the previously reported results. Finally, the effect of temperature on various parameters like cut-out size to thickness ratio, cut-out size to side ratio, power law index, side to thickness ratio, boundary conditions are shown through various numerical illustrations

    Sexual and Reproductive Health Research and Research Capacity Strengthening in Africa: Perspectives from the region.

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    Developing the capacity to effectively carry out public health research is an integral part of health systems at both the national and global levels and strengthening research capacity is recognized as an approach to better health and development in low- and middle-income countries (LMICs). Especially fields such as sexual and reproductive health (SRH) would require inter-disciplinary teams of researchers equipped with a range of methodologies to achieve this. In November 2013, as part of the International Family Planning Conference in Addis Ababa, Ethiopia, a group of African researchers came together to discuss the gaps and strategies to improve sexual and reproductive health research and research capacity strengthening in Africa. This commentary summarizes the three broad areas where the issues and proposed solutions have concentrated around: 1) Addressing research gaps that are most relevant to policies and programmes in SRH, 2) Carrying out high quality and collaborative research, and 3) Translating research findings into SRH policies and programmes. Even though the focus of the discussions was Africa, the issues and proposed solutions can also be applied to other regions facing a high burden of disease with limited resources. The time is now and these can be achieved through synergistic commitment of African and global researchers, funders and organization

    iPrevent

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    Curso de Especial Inter茅sLa siguiente propuesta, contiene la informaci贸n necesaria para poder asesorar y brindar una mejor atenci贸n a los procesos que son inherentes a la sexualidad del ser humano. El dise帽o de la creaci贸n de una aplicaci贸n llamada iPrevent, usada en aparatos tecnol贸gicos como los m贸viles con sistema Android y Apple. Esta aplicaci贸n est谩 encaminada a presentar y a exponer los distintos m茅todos anticonceptivos que se encuentran en el mercado, as铆 mismo brindar un marco de conocimiento de cada uno, para facilitar la toma de decisiones de los adolescentes; de esta manera teniendo una correlaci贸n con la salud p煤blica y mitigar los embarazos no deseados y posibles interrupciones voluntarias del embarazo (IVE) y uso de M茅todos Anticonceptivos de emergencia en esta poblaci贸n.101 p.1. Resumen 2. Justificaci贸n 3. Marco te贸rico 4. Objetivos 5. Metodolog铆a 6. Estudio de mercadeo 7. Resultados 8. Discusi贸n 9. Conclusiones y recomendaciones 10. Referencias 11. Ap茅ndicesPregradoPsic贸log

    "Eat and you will be eaten": a qualitative study exploring costs and benefits of age-disparate sexual relationships in Tanzania and Uganda: implications for girls' sexual and reproductive health interventions

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    BACKGROUND: Age-disparate sex is associated with increased HIV risk among adolescent girls and young women (AGYW) in sub-Saharan Africa. However, little has been done to understand the dynamics of such relationships from the perspectives of either AGYW or older men, and the communities in which these relationships are embedded. This article explores the motivations and perceived benefits of such relationships for AGYW and older men, plus the social and sexual and reproductive health (SRH) consequences. METHODS: This study held 37 participatory focus group discussions and 87 in-depth interviews with young people aged 14-24 and adult community members aged 25-49 in rural and urban Tanzania and Uganda. Participants were sampled using purposive and snowball techniques. Thematic analysis was conducted with the aid of NVIVO 10 software. RESULTS: Motivations, perceived benefits and costs for AGYW centred around four main themes: financial motivations, emotional support, meeting social expectations and reflections on sexual health. Specifically, AGYW noted that older partners gave gifts/money of higher value compared with younger men. Men's perceived benefits and costs revolved around the need to satisfy their sexual desire, the perception that AGYW were capable of engaging in new and creative sexual styles and their desire for prestige among male peers. Both AGYW and men recognised the social and SRH consequences as: risk of violence, social stigma, risk of unplanned pregnancy and risk of sexually transmitted infections including HIV. CONCLUSION: Interventions need to acknowledge the perceived benefits of age-disparate sexual relationships for AGYW and older men and engage them in critical reflection on the medium- to longer-term consequences versus the shorter-term satisfaction of needs, desires and aspirations, as a way to navigate the constrained opportunities they face given existing structural limitations. Interventions should also tackle the structural constraints AGYW face by helping them access resources, become empowered and challenge the expectation of having to depend financially on men. Interventions with men should unpack the assumption that men are naturally hypersexual. The role of peers for both girls and men should be acknowledged, and a shift from individual targeted interventions to changing norms at the community level should be considered

    Integrating community health assistant- driven sexual and reproductive health services in the community health system in Nyimba district in Zambia: Mapping key actors, points of integration, and conditions shaping the process

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    Introduction: Although large scale public sector community health worker programs have been key in providing sexual and reproductive health (SRH) services in low- and middle-income countries, their integration process into community health systems is not well understood. This study aimed to identify the conditions and strategies through which Community Health Assistants (CHAs) gained entry and acceptability into community health systems to provide SRH services to youth in Zambia. The country鈥檚 CHA program was launched in 2010. Methodology: A phenomenological design was conducted in Nyimba district. All nine CHAs deployed in Nyimba district were interviewed in-depth on their experiences of navigating the introduction of SRH services for youth in community settings, and the data obtained analyzed thematically. Results: In delivering SRH services targeting youth, CHAs worked with a range of community actors, including other health workers, safe motherhood action groups, community health workers, neighborhood health committees, teachers, as well as political, traditional and religious leaders. CHAs delivered SRH education and services in health facilities, schools, police stations, home settings, and community spaces. They used their health facility service delivery role to gain trust and entry into the community, and they also worked to build relationships with other community level actors by holding regular joint meetings, and acting as brokers between the volunteer health workers and the Ministry of Health. CHAs used their existing social networks to deliver SRH services to adolescents. By embedding the provision of information about SRH into general life skills at community level, the topic鈥檚 sensitivity was reduced and its acceptability was enhanced. Further, support from community leaders towards CHA-driven services promoted the legitimacy of providing SRH for youth. Factors limiting the acceptability of CHA services included the taboo of discussing sexuality issues, a gender discriminatory environment, competition with other providers, and challenges in conducting household visits
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