Design and Analysis of Hydraulic Operated Press Brake

Hydraulic press brake is a machine tool and it is used for bending the sheet and plate material, most commonly used for sheet metal. The present work includes the simulation (stress analysis) of hydraulic operated press brake subjected to load. The stress analysis is carried out using advanced fem tool ANSYS. The static structural analysis was done for hydraulic operated press brake that analysis may be static or dynamic analysis. A number of analysis techniques like analytical and experimental are available for the structural analysis of hydraulic press brake. Same as number of optimization techniques are available for optimization of it like Taguchi method. Determination of the different structural analysis and optimization through the various methods lie FEA in a hydraulic press brake has been reported in literature

Relationship between reported prior condom use and current self-perceived risk of acquiring HIV among mobile female sex workers in southern India

<p>Abstract</p> <p>Background</p> <p>With the evolution of Health Belief Model, risk perception has been identified as one of several core components of public health interventions. While female sex workers (FSWs) in India continue to be at most risk of acquiring and transmitting HIV, little is known about their perception towards risk of acquiring HIV and how this perception depends upon their history of consistent condom use behavior with different type of partners. The objective of this study is to fill this gap in the literature by examining this relationship among mobile FSWs in southern India.</p> <p>Methods</p> <p>We analyzed data for 5,413 mobile FSWs from a cross-sectional behavioral survey conducted in 22 districts from four states in southern India. This survey assessed participants’ demographics, condom use in sex with different types of partners, continuation of sex while experiencing STI symptoms, alcohol use before having sex, and self-perceived risk of acquiring HIV. Descriptive analyses and multilevel logistic regression models were used to examine the associations between risky sexual behaviors and self-perceived risk of acquiring HIV; and to understand the geographical differences in HIV risk perception.</p> <p>Results</p> <p>Of the total mobile FSWs, only two-fifths (40%) perceived themselves to be at high risk of acquiring HIV; more so in the state of Andhra Pradesh (56%) and less in Maharashtra (17%). FSWs seem to assess their current risk of acquiring HIV primarily on the basis of their past condom use behavior with occasional clients and less on the basis of their past condom use behaviors with regular clients and non-paying partners. Prior inconsistent condom use with occasional clients was independently associated with current perception of high HIV risk (adjusted odds ratio [aOR)] = 2.1, 95% confidence interval [CI]: 1.7-2.6). In contrast, prior inconsistent condom use with non-paying partners was associated with current perception of low HIV risk (aOR= 0.7, 95% CI: 0.5-0.9). The congruence between HIV risk perception and condom use with occasional clients was high: only 12% of FSWs reported inconsistent condom use with occasional clients but perceived themselves to be at low risk of acquiring HIV.</p> <p>Conclusion</p> <p>The association between high risk perception of acquiring HIV and inconsistent condom use, especially with regular clients and non-paying partners, has not been completely internalized by this high risk group of mobile FSWs in India. Motivational efforts to prevent HIV should emphasize the importance of accurately assessing an individual’s risk of acquiring HIV based on condom use behavior with all types of partners: occasional and regular clients as well as non-paying partners; and encourage behavior change based on an accurate self-assessment of HIV risk.</p

Genome-wide associations for heat stress response suggest potential candidate genes underlying milk fatty acid composition in dairy cattle

peer reviewe

Short-Term Effect of Forage Grasses on Carbon Sustainability, Fodder Security, and Soil Properties in Poor Soils of Semi-Arid India

Grasses are essential sources of fodder for livestock and provide options for climate resilience due to their broad range of adoption. They are also valuable resources for soil quality enhancement. Therefore, a six-year field study using nine grasses (2013 to 2019) was initiated in a semi-arid region of central India. The study aimed to assess the short-term impact of these nine grasses on soil carbon stock, selected soil physiochemical and biological properties, and green fodder yield. Results (after six years) revealed that a greater carbon stock (7.0 and 7.2 Mg ha–1), carbon sustainability index (71.6 and 89.3), and sustainable yield index for green fodder (0.89 and 0.91), respectively, were observed in lampagrass [Heteropogon contortus (L.)] and guineagrass [Megathyrsus maximus(Jacq.)]. These improvements could be due to the greater root length (1700 and 2220 cm plant–1) and root weight density of grasses in the upper soil layer (0–10 cm, 70%), and the higher green biomass production (~44.1 t ha–1 year–1). These beneficial changes might have further led to the lower soil bulk density (~1.05 g cm–3), higher water-filled porosity (14.7 and 16.1%), and soil organic carbon content (~0.67%) over other grasses and barren soil. Consequently, the highest total bacterial count (21.9 and 44.5 × 107 CFU g–1), soil microbial biomass carbon and enzyme activities such as acid phosphatase (17.7 and 22.6 µg p-nitrophenyl g–1 h–1) and alkaline phosphatase (9.6 and 15.9 µg p-nitrophenyl g–1 h–1) were noticed in lampagrass and guineagrass rhizospheres. Therefore, cultivation of perennial grasses in the low fertile soils of semi-arid environments can be an eco-friendly approach to enhance soil fertility, green fodder supply, and soil carbon build-up

The Extent and Nature of Fluidity in Typologies of Female Sex Work in Southern India: Implications for HIV Prevention Programs

These authors examine the nature and extent of fluidity in defining the typology of female sex work based on the place of solicitation or place of sex or both places together, and whether sex workers belonging to a particular typology are at increased risk of HIV in southern India. Data are drawn from a cross-sectional survey conducted during 2007–2008 among mobile female sex workers (N = 5301) in four Indian states. Findings from this study address an important policy issue: Should programmatic prevention interventions be spread to cover all places of sex work or be focused on a few places that cover a large majority of sex workers? Results indicate that most female sex workers, including those who are usually hard to reach such as those who are mobile or who use homes for soliciting clients or sex, can be reached programmatically multiple times by concentrating on a smaller number of categories, such as street-, lodge-, and brothel-based sex workers

Migration/mobility and vulnerability to HIV among male migrant workers: Karnataka 2007-08

The present study was undertaken by the Population Council and the Karnataka Health Promotion Trust to study the patterns and factors driving migration among men and the extent to which they engage in high-risk activities associated with HIV. The specific objectives of the study were: to understand the patterns and factors driving the migration of men seeking work in the state of Karnataka; to describe the characteristics of vulnerable subpopulations among migrant men; and to examine the determinants of high-risk sexual behavior among the subpopulations of migrant men, with an emphasis on their mobility as one possible factor. Results suggest no relationship between degree of mobility and risky sexual behaviors among the migrants surveyed, and no systematic pattern of a relationship between condom use with the various types of sex partners and degree of mobility, indicating the need for HIV-prevention initiatives in their home areas as well as in their work destinations. Future research is needed to improve understanding of the behavior of men working in specific occupational groups in terms of their sexual networks and HIV-prevention needs

Patterns of migration/mobility and HIV risk among female sex workers: Karnataka 2007-08

In Karnataka, South India, HIV infection is spreading, with female sex workers (FSWs) a high-risk group. In an effort to gain control over the epidemic, the HIV/AIDS program has made substantial efforts in the last few years toward offering FSWs access to information about sexually transmitted infections/HIV/AIDS and to condoms, clinics, and other medical services. The present study was undertaken by the Karnataka Health Promotion Trust and the Population Council to determine the patterns and factors that drive mobility among FSWs and the association of mobility with HIV risk. The report’s findings—including mobility routes, sociodemographic profiles of FSWs, membership in self-help groups and collectives, and locations for soliciting—will be used to help increase the impact of program intervention

Calibration of a Neutron Polarimeter

This research was sponsored by the National Science Foundation Grant NSF PHY-931478