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Thermal x-ray radiation was generated and confined inside a spherical gold cavity of 1.2 mm diameter that was heated by a 50 J/1 ns laser pulse at 1.053 mum wavelength. The laser intensity on the inner surface of the cavity was ~5x1013 W/cm2. The x-ray spectra recorded on high sensitivity x-ray film using a transmission grating spectrometer (TGS) positioned normal

An intense short-pulse laser propagating through a plasma undergoes self-pulse distortion due to the combined effects of nonlinearity-induced self-focusing and dispersion. The nonlinearity arises as a result of relativistic mass variation. The low-intensity front of the pulse converges mildly, while the high-intensity later portions self-focus strongly. However, at the intensity maxima, the self-focusing effect is masked by the saturation effect of the nonlinear refractive index. The group velocity is also a function of intensity; as a result, the front of the pulse becomes sharpened, while the tail tends to be broadened.

Objectives This study aimed to determine the prevalence of neonatal deaths and its underlying correlates in tribal area of Andhra Pradesh, India Methods We conducted a two phase cross-sectional study (N=230). Semistructured questionnaire schedules (in the vernacular-Telugu) were used in the initial qualitative phase, to obtain specific information from mothers who delivered in a one year period prior to the study. Information from the analysed qualitative data was used to construct a questionnaire-schedule for the 2 nd phase which used quantitative survey techniques. Results It was observed that Infant Mortality ratio (IMR) in Vizianagaram district was 239 per 1000 live births in the tribal areas under study. This was ten times higher than that reported by the district (22/1000) and 4-5 times higher than SRS data of 2011 for AP. It was observed that 28% of infants died within first day, 68% within first week (including the first day) and 81% within first month. Conclusions The high ...

ObjectivesThis study used a population-based cross-sectional survey to describe the prevalence of psychosocial disability and unmet need for access to services in North India.SettingThis study was conducted in Dehradun district, Uttarakhand, in 2014.ParticipantsA population-based sample of 2441 people over the age of 18 years.Primary outcome measuresThe Rapid Assessment of Disability survey tool identified people with disability and used an adapted version of the Kessler scale to identify those with psychosocial disability. It additionally collected information on socioeconomic variables, access to community services and barriers to participation. Prevalence of psychosocial disability and unmet needs and descriptions of barriers to services were calculated, and multivariable logistic regression was used to assess associations between risk factors and psychosocial disability.ResultsPrevalence of psychosocial disability was 4.8% and 75% of participants with psychological distress also...

Purpose: In low- and middle-income countries, reliable and disaggregated disability data on prevalence, participation and barriers is often not available.  This study aimed to estimate disability prevalence, determine associated socio-demographic factors and compare access in the community between people with and without disability in Dehradun district of Uttarakhand, India, using the Rapid Assessment of Disability Survey.Methods: A cross-sectional population-based survey was conducted on a sample of 2431 adults, selected using a two-stage cluster randomised sampling technique.  The survey comprised an interviewer-administered household survey and an individual survey measuring disability, wellbeing and participation.  For each person with disability, an age and sex-matched control (without disability) was selected. In addition to prevalence, the difference in participation and barriers faced by people with and without disability were analysed.Results and Conclusions: The prevalence...

To evaluate glaucoma-associated mortality in a rural cohort in India. The study cohort comprised individuals aged 40 years and above who took part in the Andhra Pradesh Eye Disease Study (APEDS1) during 1996-2000. All participants underwent detailed comprehensive eye examination. Glaucoma was defined using International Society of Geographic and Epidemiologic Ophthalmology criteria. This cohort was followed up after a decade (June 2009 to January 2010; APEDS2). Mortality HR analysis for ocular risk factors was performed using Cox proportional hazards regression after adjusting for sociodemographic, lifestyle and clinical variables. In APEDS1, 2790 individuals aged more than or equal to 40 years were examined. 47.4% were male. Forty-five participants had primary open angle glaucoma (POAG) and 66 had primary angle closure disease (PACD). Ten years later, 1879 (67.3%) were available, 739 (26.5%) had died and 172 (6.2%) had migrated; whereas 22 of the 45 (48.8%) with POAG and 22 of the ...

There is a lack of evidence on barriers faced by persons with disability in accessing employment opportunities in India. This study was undertaken to ascertain both employee and employer perceptions on barriers existing among Information Technology (IT) and IT-enabled sectors to employ persons with disabilities. Two hundred participants from six IT/IT-enabled sector organizations were included in the study; study was conducted at Hyderabad, India. A semi-structured questionnaire was administered to the participants. Physical access to and within the worksite was highlighted as a concern by 95% of respondents. Majority perceived that communication, attitude of people, discrimination, harassment at work place, and information were critical barriers. Only 3.8% of employers were aware that their company had a written policy on employing persons with disabilities. Employers stated that commitment and perseverance were important facilitators among persons with disabilities. Evidence from ...

Orofacial clefts (OFC) are linked with several genetic and environmental factors. The aim of this study was to explore the association of potential risk factors with OFCs in India. This was a hospital-based, matched case-control (1:4 ratio; matching done for parity) study conducted in Hyderabad, Bengaluru, and Delhi-National Capital Region. Cases (nonsyndromic clefts) were recruited from treatment centers, while controls (live births) were recruited from maternity centers. Information on exposures was collected during personal interviews. Exposures of interest included folic acid supplementation during the peri-conceptional period, consanguineous marriage, exposure to drugs, infections during pregnancy, family history of OFC, and dietary factors. A total of 785 participants were included in the study: 157 cases and 628 controls. A family history of cleft lip/palate (adjusted odds ratio [AOR], 15.48; 95% confidence interval [CI], 4.36-54.96; p value = 0.001), exclusive vegetarianism ...

In the last two decades, India has witnessed a substantial decrease in infant mortality attributed to infectious disease and malnutrition. However, the mortality attributed to birth defects remains constant. Studies on the prevalence of birth defects such as neural tube defects and orofacial clefts in India have reported inconsistent results. Therefore, we conducted a systematic review of observational studies to document the birth prevalence of neural tube defects and orofacial clefts. A comprehensive literature search for observational studies was conducted in MEDLINE and EMBASE databases using key MeSH terms (neural tube defects OR cleft lip OR cleft palate AND Prevalence AND India). Two reviewers independently reviewed the retrieved studies, and studies satisfying the eligibility were included. The quality of included studies was assessed using selected criteria from STROBE statement. The overall pooled birth prevalence (random effect) of neural tube defects in India is 4.5 per ...

The study was conducted to determine whether trained key informants (KI) could identify children with impairments. Trained KI identified children with defined impairments/epilepsy who were then examined by a medical team at a nearby assessment centre (Key Informant Methodology: KIM). A population-based household randomised sample survey was also conducted for comparing the prevalence estimates. Three districts in North Bangladesh. Study population of approximately 258 000 children aged 0-<18 years, within which 3910 children were identified by KI, 94.8% of whom attended assessment camps. In the household survey, 8120 children were examined, of whom 119 were identified with an impairment/epilepsy. Prevalence estimates of severe visual impairment (SVI), moderate/severe hearing impairment (HI), substantial physical impairment (PI) and epilepsy. Overall prevalence estimates of impairments, including presumed HI, showed significant differences comparing KIM (9.0/1000 (95% CI 8.7 to 9....

Women suffer disproportionately more from cataract blindness compared to males in low- and middle-income countries. Two large population-based surveys have been undertaken in India at an interval of 7 years and data from these surveys provided an opportunity to assess the trends in gender differentials in cataract blindness. Data were extracted from the surveys to discern sex differences in cataract blindness. Multivariate analysis was performed to adjust for confounders and their impact on gender differences in cataract blindness. Blindness was defined as presenting vision <20/400 in the better eye, and a cataract blind person was defined as a blind person where the principal cause of loss of vision was cataract. Prevalence of cataract blindness was higher in females compared to males in both surveys. The odds of cataract blindness for females did not change over time as observed in the surveys (1999-2001 and 2006-2007). Adjusted odds ratio from logistic regression analysis reve...

Parents of children with hearing impairment are at increased risk of mental health morbidities. We examined the predictive factors associated with caregiver's strain and psychological morbidities in parents and family caregivers of children with hearing impairment. In total, n = 201 parents and family caregivers of children with and without hearing impairment aged 3 to 16 years were recruited. Caregiver's strain and psychological morbidities were measured using the Zarit Burden scale and the World Health Organization's Self-Reporting Questionnaire (SRQ-20). Presence of behavioural problems in children was measured using the Strengths and Difficulties Questionnaire. After adjustment, low educational attainment and domestic violence were found to be associated with caregiving strain, whereas dissatisfaction with social support from family, behavioural problems in children, and domestic violence strongly predicted psychological morbidities. Addressing the mental healthcare needs of parents may help in downsizing the impact of psychological morbidities on the well-being of children with hearing impairment.