Modelling of Heat Loss in Closed Vessels during propellant Burning

Closed vessel technique is essentially used to determine the force constant, vivacity and the burning rate of gun propellants. In fact, it is the only method to find out these three parameters experimentally. It is a well-known fact that however small the propellant burning time may be, there will be heat loss to the walls of the vessel due to conduction, convection, radiation and also due to the expansion of the vessel. This fact necessitates applying correction to the observed maximum pressure in the experiment. An analysis is presented in this paper as to how this heat loss can be modelled along with discussion about other models reported in this field

Effects of Different Meteorological Standards on Projectile Path

Projectile path is dictated by estimated line of fire. Line of fire can be estimated by referring RT as well as trajectory model on computer. RT is prepared under ISA/ICAO meteorological standard conditions without wind effect. Meteorological conditions like density, humidity, pressure, wind, temperature affect the path of the trajectory. Meteorological data plays very important role in trajectory prediction. Trajectory is predicted using RT for a particular weapon where ICAO standard met data is used. Ind Std met data is different from ICAO data. Use of Ind Std data improves the accuracy of trajectory prediction for Indian field deployment. In this paper, comparative study of effect on projectile path under ICAO, Ind Std and actual Indian prevailing met have been carried out and analyzed. From this analysis, a new model has been established that if actual prevailing met is not available then trajectory prediction can be carried out using Ind Std met data with wind data as perdate and time. It predicts trajectory very close to actual. Effect of wind has been studied and found that wind effect is very dominant on projectile path. Study of effect of density also has been carried out in this paper. It is observed that Ind Std density values are much close to actual as compared to ICAO. Therefore, if insufficient met is recorded then Ind std density can be used to fill density values for that region.Defence Science Journal, 2013, 63(1), pp.101-107, DOI:http://dx.doi.org/10.14429/dsj.63.264

Study on awareness, perceptions, experiences in decision process of hysterectomy in women presenting to Goa Medical College

Background: Hysterectomy (removal of uterus) has many indications like fibroids, dysfunctional uterine bleeding, uterine prolapse and chronic pelvic pain. The purpose of this study is to know the level of awareness of women about hysterectomy, to study their experiences, to assess their involvement in decision making process and to develop a suitable protocol, counselling and education material to ensure women’s involvement.Methods: This is a cross sectional study using validated semi-structured interview questionnaire over 6 months (1st December, 2018 to 31st May, 2019) in Goa Medical College. Data was entered in epidata manager and analysed using SPSS 22 version. Categorical variables were expressed in percentages and proportions and quantitative variables in mean±SD. Significance was checked using Chi square test and association between dependent and independent variables was assessed by using bivariate analysis. P value <0.05 was taken as significant.Results: A total of 149 women were recruited into the study who were admitted for hysterectomy. The mean age of women was 49.3 years. The awareness with respect to various aspects of hysterectomy was good in 23.4% subjects and poor in 76.6% subjects. The awareness was significantly related to level of education (p=0.002), urban location (p=0.016) and socioeconomic status (p=0.028). Education was significant factor in decision-making process (p< 0.05). It was observed that good experience had positive correlation to their perception about hysterectomy.Conclusions: It was concluded that awareness about hysterectomy was significantly related to education, urban location and socio-economic status of women. Pre-operative education would help to reduce the post-operative symptoms for a women undergoing hysterectomy

A survey to evaluate the efficacy of virechana, basti and knee dhara in patients with Osteoarthritis of knee joint

Background: The objective of this study was to evaluate the role of Virechana (Arhtrox) followed by Kalbasti (14 in number), Knee dhara and Matrabastiin knee osteoarthritis patients.Methods: From OPD of Ayushakti Ayurveda Pvt. Ltd., 60 Patients suffering from knee Osteoarthritis (Janusandhigatavata) were selected randomly as per the inclusion and exclusion criteria. On the basis of specific criteria prepared. Group-I-(30 patients) received only Ayushakti herbs for Osteoarthritis, viz. Painmuktimj, Painmukti sandhical and Painmukti cream for LA Group-II-(30 patients) received Virechana (Arthrox), KalBastikrama (14 Bastis) and Knee dhara with oil followed by Matrabasti (60 ml) twice a week for 6 months along with Ayushakti herbs for Osteoarthritis. Each participant was in the study for 6 months. The entire study duration was 12 months.Result: About 87 patients were enrolled in the study of which 60 completed the study, 27 patients were drop out of the study, at the different stages of project mainly due to poor follow up. Significant reduction in pain was observed in Groups I and II as compared to the baseline (p <0.001) Pain scale (p <0.001).Conclusion: In this study, good relief was offered in knee joint pain, stiffness and mobility, and daily activities like standing, walking, and climbing. Painmukti mj, Painmukti cream and Painmukti Sandhical tablets are Anti-inflammatory, Analgesic but their efficacy can be increased with Virechana

Lay health worker led intervention for depressive and anxiety disorders in India: impact on clinical and disability outcomes over 12 months.

BACKGROUND: Depressive and anxiety disorders (common mental disorders) are the most common psychiatric condition encountered in primary healthcare. AIMS: To test the effectiveness of an intervention led by lay health counsellors in primary care settings (the MANAS intervention) to improve the outcomes of people with common mental disorders. METHOD: Twenty-four primary care facilities (12 public, 12 private) in Goa (India) were randomised to provide either collaborative stepped care or enhanced usual care to adults who screened positive for common mental disorders. Participants were assessed at 2, 6 and 12 months for presence of ICD-10 common mental disorders, the severity of symptoms of depression and anxiety, suicidal behaviour and disability levels. All analyses were intention to treat and carried out separately for private and public facilities and adjusted for the design. The trial has been registered with clinical trials.gov (NCT00446407). RESULTS: A total of 2796 participants were recruited. In public facilities, the intervention was consistently associated with strong beneficial effects over the 12 months on all outcomes. There was a 30% decrease in the prevalence of common mental disorders among those with baseline ICD-10 diagnoses (risk ratio (RR) = 0.70, 95% CI 0.53-0.92); and a similar effect among the subgroup of participants with depression (RR = 0.76, 95% CI 0.59-0.98). Suicide attempts/plans showed a 36% reduction over 12 months (RR=0.64, 95% CI0.42–0.98) among baseline ICD-10 cases. Strong effects were observed on days out of work and psychological morbidity, and modest effects on overall disability [corrected]. In contrast, there was little evidence of impact of the intervention on any outcome among participants attending private facilities. CONCLUSIONS: Trained lay counsellors working within a collaborative-care model can reduce prevalence of common mental disorders, suicidal behaviour, psychological morbidity and disability days among those attending public primary care facilities

Effectiveness of a community-based intervention for people with schizophrenia and their caregivers in India (COPSI): a randomised controlled trial

Background: Observational evidence suggests that community-based services for people with schizophrenia can be successfully provided by community health workers, when supervised by specialists, in low-income and middleincome countries. We did the COmmunity care for People with Schizophrenia in India (COPSI) trial to compare the eff ectiveness of a collaborative community-based care intervention with standard facility-based care. Methods: We did a multicentre, parallel-group, randomised controlled trial at three sites in India between Jan 1, 2009 and Dec 31, 2010. Patients aged 16–60 years with a primary diagnosis of schizophrenia according to the tenth edition of the International Classifi cation of Diseases, Diagnostic Criteria for Research (ICD-10-DCR) were randomly assigned (2:1), via a computer-generated randomisation list with block sizes of three, six, or nine, to receive either collaborative community-based care plus facility-based care or facility-based care alone. Randomisation was stratifi ed by study site. Outcome assessors were masked to group allocation. The primary outcome was a change in symptoms and disabilities over 12 months, as measured by the positive and negative syndrome scale (PANSS) and the Indian disability evaluation and assessment scale (IDEAS). Analysis was by modifi ed intention to treat. This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN 56877013. Findings: 187 participants were randomised to the collaborative community-based care plus facility-based care group and 95 were randomised to the facility-based care alone group; 253 (90%) participants completed follow-up to month 12. At 12 months, total PANSS and IDEAS scores were lower in patients in the intervention group than in those in the control group (PANSS adjusted mean diff erence –3·75, 95% CI −7·92 to 0·42; p=0·08; IDEAS –0·95, −1·68 to −0·23; p=0·01). However, no diff erence was shown in the proportion of participants who had a reduction of more than 20% in overall symptoms (PANSS 85 [51%] in the intervention group vs 44 [51%] in the control group; p=0·89; IDEAS 75 [48%] vs 28 [35%]). We noted a signifi cant reduction in symptom and disability outcomes at the rural Tamil Nadu site (−9·29, −15·41 to −3·17; p=0·003). Two patients (one in each group) died by suicide during the study, and two patients died because of complications of a road traffi c accident and pre-existing cardiac disease. 18 (73%) patients (17 in the intervention group) were admitted to hospital during the course of the trial, of whom seven were admitted because of physical health problems, such as acute gastritis and vomiting, road accident, high fever, or cardiovascular disease. Interpretation: The collaborative community-based care plus facility-based care intervention is modestly more eff ective than facility-based care, especially for reducing disability and symptoms of psychosis. Our results show that the study intervention is best implemented as an initial service in settings where services are scarce, for example in rural areas

Experiences of stigma and discrimination faced by family caregivers of people with schizophrenia in India.

Stigma associated with schizophrenia significantly affects family caregivers, yet few studies have examined the nature and determinants of family stigma and its relationship to their knowledge about the condition. This paper describes the experiences and determinants of stigma reported by the primary caregivers of people living with schizophrenia (PLS) in India. The study used mixed methods and was nested in a randomised controlled trial of community care for people with schizophrenia. Between November 2009 and October 2010, data on caregiver stigma and functional outcomes were collected from a sample of 282 PLS-caregiver dyads. In addition, 36 in-depth-interviews were conducted with caregivers. Quantitative findings indicate that 'high caregiver stigma' was reported by a significant minority of caregivers (21%) and that many felt uncomfortable to disclose their family member's condition (45%). Caregiver stigma was independently associated with higher levels of positive symptoms of schizophrenia, higher levels of disability, younger PLS age, household education at secondary school level and research site. Knowledge about schizophrenia was not associated with caregiver stigma. Qualitative data illustrate the various ways in which stigma affected the lives of family caregivers and reveal relevant links between caregiver-stigma related themes ('others finding out', 'negative reactions' and 'negative feelings and views about the self') and other themes in the data. Findings highlight the need for interventions that address both the needs of PLS and their family caregivers. Qualitative data also illustrate the complexities surrounding the relationship between knowledge and stigma and suggest that providing 'knowledge about schizophrenia' may influence the process of stigmatisation in both positive and negative ways. We posit that educational interventions need to consider context-specific factors when choosing anti-stigma-messages to be conveyed. Our findings suggest that messages such as 'recovery is possible' and 'no-one is to blame' may be more helpful than focusing on bio-medical knowledge alone

The effectiveness and cost-effectiveness of lay counsellor-delivered psychological treatments for harmful and dependent drinking and moderate to severe depression in primary care in India: PREMIUM study protocol for randomized controlled trials.

BACKGROUND: The leading mental health causes of the global burden of disease are depression in women and alcohol use disorders in men. A major hurdle to the implementation of evidence-based psychological treatments in primary care in developing countries is the non-availability of skilled human resources. The aim of these trials is to evaluate the effectiveness and cost-effectiveness of two psychological treatments developed for the treatment of depression and alcohol use disorders in primary care in India. METHODS/DESIGN: This study protocol is for parallel group, randomized controlled trials (Healthy Activity Program for moderate to severe depression, Counselling for Alcohol Problems for harmful and dependent drinking) in eight primary health centres in Goa, India. Adult primary care attendees will be screened with the Patient Health Questionnaire for depression and, in men only, the Alcohol Use Disorders Identification Test for drinking problems. Screen-positive attendees will be invited to participate; men who screen positive for both disorders will be invited to participate in the Counselling for Alcohol Problems trial. Those who consent will be allocated in a 1:1 ratio to receive either the respective psychological treatment plus enhanced usual care or enhanced usual care only using a computer generated allocation sequence, stratified by primary health centre and, for depression, by sex. The enhanced usual care comprises providing primary health centre doctors with contextualized World Health Organization guidelines and screening results. Psychological treatments will be delivered by lay counsellors, over a maximum period of three months. Primary outcomes are severity of disorder and remission rates at three months post-enrolment and, for the Counselling for Alcohol Problems trial, drinking and the impact of drinking on daily lives. Secondary outcomes include severity of disorder and remission rates at 12 months, disability scores, suicidal behaviour and economic impact, and cost-effectiveness at three and 12 months. 500 participants with depression and 400 participants with harmful drinking will be recruited. Primary analyses will be intention-to-treat. DISCUSSION: These trials may offer a new approach for the treatment of moderate-severe depression and drinking problems in primary care that is potentially scalable as it relies on delivery by a single pool of lay counsellors. TRIAL REGISTRATION: Both trials are registered with the International Society for the Registration of Clinical Trials (Healthy Activity Programme registration number ISRCTN95149997; Counselling for Alcohol Problems registration number ISRCTN76465238)

Experiences of stigma and discrimination of people with schizophrenia in India.

Stigma contributes greatly to the burden of schizophrenia and is a major obstacle to recovery, yet, little is known about the subjective experiences of those directly affected in low and middle income countries. This paper aims to describe the experiences of stigma and discrimination of people living with schizophrenia (PLS) in three sites in India and to identify factors influencing negative discrimination. The study used mixed methods and was nested in a randomised controlled trial of community care for schizophrenia. Between November 2009 and October 2010, data on four aspects of stigma experienced by PLS and several clinical variables were collected from 282 PLS and 282 caregivers and analysed using multivariate regression. In addition, in-depth-interviews with PLS and caregivers (36 each) were carried out and analysed using thematic analysis. Quantitative findings indicate that experiences of negative discrimination were reported less commonly (42%) than more internalised forms of stigma experience such as a sense of alienation (79%) and significantly less often than in studies carried out elsewhere. Experiences of negative discrimination were independently predicted by higher levels of positive symptoms of schizophrenia, lower levels of negative symptoms of schizophrenia, higher caregiver knowledge about symptomatology, lower PLS age and not having a source of drinking water in the home. Qualitative findings illustrate the major impact of stigma on 'what matters most' in the lives of PLS and highlight three key domains influencing the themes of 'negative reactions' and 'negative views and feelings about the self', i.e., 'others finding out', 'behaviours and manifestations of the illness' and 'reduced ability to meet role expectations'. Findings have implications for conceptualising and measuring stigma and add to the rationale for enhancing psycho-social interventions to support those facing discrimination. Findings also highlight the importance of addressing public stigma and achieving higher level social and political structural change