Connecting anomaly and tunneling methods for Hawking effect through chirality

The role of chirality is discussed in unifying the anomaly and the tunneling formalisms for deriving the Hawking effect. Using the chirality condition and starting from the familiar form of the trace anomaly, the chiral (gravitational) anomaly, manifested as a nonconservation of the stress tensor, near the horizon of a black hole, is derived. Solution of this equation yields the stress tensor whose asymptotic infinity limit gives the Hawking flux. Finally, use of the same chirality condition in the tunneling formalism gives the Hawking temperature that is compatible with the flux obtained by anomaly method.Comment: LaTex, 8 pages, no figures, reformulation of tunneling mechanism, to appear in Phys. Rev.

Deformation Induced Phase Transformation of 304L Stainless Steel and its Structural Characterization

This report aims to examine deformation induced phase transformation in 304L stainless steel up on compressive loading at room temperature of 300K. For this, compression tests were carried out using specimens of varying length to diameter ratios. To avoid effects of any friction, teflon tapes were use at the specimen platen interfaces. The results indicate that homogenous deformation takes place up to 15% of total compressive engineering strain. X-ray diffraction and scanning electron microscopic studies indicate that metastable austenite transforms to martensite due to compressive loading. “The volume fraction of martensite increases with increase in percentage of deformation.” Post deformation hardness also increases monotonically. Nature of homogenous deformation also gets reduced due to prevailing friction at the interfaces. In the course of the study, the amounts of particular phase fractions have also been calculated from the integrated intensity of XRD results. The results are then correlated with the extent of deformation in the respective samples and the behavior is compared as-against tensile loading conditions

Design and development of FRP mobile fish vending trolley for hygienic fish marketing

A mobile fish vending trolley has been designed and developed by Indian Council of Agricultural Research (ICAR) - All India Coordinated Research Project on Plasticulture Engineering and Technology (AICRP on PET) centre at ICAR-Central Institute of Freshwater Aquaculture (ICAR-CIFA), Bhubaneswar to aid the fisher folks for vending their fish harvests in hygienic condition. The unique selling proposition (USP) of the vending unit is its unibody design, where icebox for storing fish, 20 l capacity water storage tank for hand washing, tool box, fish cutting deck and waste collection chambers are integrated into the unit. The icebox can store 100 kg of fish in ice which can be sold in a single day by the fisher folks. The complete unit of mobile fish vending carriage is fabricated with fibre reinforced plastic (FRP), because of its high strength compared to other plastics, ease of fabrication and good insulation property of fiberglass (i.e. thermal conductivity= 0.04 w/mK at normal room temperature 25 ºC). The dimensions of the carriage unit is 4.0’x2’9”x2’6” in which half portion is dedicated for the insulated ice box and the remaining portion houses the fish cutting deck, waste collection chamber and tool box. This fish vending trolley would be a boon for the marginal fish vendors, who want to sell fish in a hygienic condition and to increase income generation potential by selling 100 kg fish in a day

Nutritional status vis-a-vis iodine deficiency in children of "Save Our Soul"children’s village in rural Varanasi: a micro-level study

Background: There is paucity of data with regard to the Iodine deficiency in an organized sector like SOS children’s village which is an independent, non-governmental, social development organization located in urban Varanasi. Uttar Pradesh is one of the endemic states for goiter. It is expected that similar situation of goiter may prevail in children as well. It is a matter of concern that micro nutrient deficiency and under-nutrition may exist side by side. The objectives of the study were to assess nutritional status and find out the extent of Iodine deficiency in the study subjects, to find out the association between under nutrition and Iodine deficiency and to find out the Iodine content of salt used for cooking in the family.Methods: 118 children of age group 6 to 15 years, from a Non-Governmental Organization (Save Our Soul) in Rural Varanasi constituted materials of the study. Consent from the director of the institution and assent from the individual children was taken prior to examination. All the subjects were examined clinically for the Presence of Goiter. They were subjected to weight and height recording following standard technique. Salt samples from the houses were tested by spot Iodine detection kit.Results: In case of 72.6% female and 91.3% male subjects, BMI for age was <100% of the respective reference values; in all 76.3% subjects belonged to this category. Presence of Goiter among male children was 34.7% and among female children it was 22.2% and overall it was 24.6%. Significant association was observed between nutritional status and iodine deficiency (p<0.05). In 37.5% of salt samples, iodine content was 7 ppm and rest 62.5% shows iodine content 15ppm.Conclusions: Nutritional status of the children under reference was far from being satisfactory. High prevalence of Goiter is matter of serious concern. Iodized salt consumption in the houses was up to the mark but Iodine content of the salt samples from houses was not satisfactory

Noncommutative Black Hole Thermodynamics

We give a general derivation, for any static spherically symmetric metric, of the relation $T_h=\frac{\cal K}{2\pi}$ connecting the black hole temperature ($T_h$) with the surface gravity ($\cal K$), following the tunneling interpretation of Hawking radiation. This derivation is valid even beyond the semi classical regime i. e. when quantum effects are not negligible. The formalism is then applied to a spherically symmetric, stationary noncommutative Schwarzschild space time. The effects of back reaction are also included. For such a black hole the Hawking temperature is computed in a closed form. A graphical analysis reveals interesting features regarding the variation of the Hawking temperature (including corrections due to noncommutativity and back reaction) with the small radius of the black hole. The entropy and tunneling rate valid for the leading order in the noncommutative parameter are calculated. We also show that the noncommutative Bekenstein-Hawking area law has the same functional form as the usual one.Comment: LaTex, 17 pages, 2 figures, minor changes, references added, to appear in Phys. Rev.

NLO Corrections to lepton pair production beyond the Standard Model at hadron colliders

We consider lepton pair production at a hadron collider in a class of effective theories with the relevant operators being four-fermion contact interaction. Despite the nonrenormalizable nature of the interaction, we explicitly demonstrate that calculating QCD corrections is both possible and meaningful. Calculating the corrections for various differential distributions, we show that these can be substantial and significantly different from those within the SM. Furthermore, the corrections have a very distinctive flavour dependence. And finally, the scale dependence of the cross sections are greatly reduced once the NLO corrections are taken into account.Comment: 23 pages, 14 figures, few typos corrected, written in JHEP styl

Psychiatric Social Work Program in Rural Community: A Multi-sectoral Initiative

Background: Community based programmes with the combined focus on promotive and curative aspects are the planned objective of interventions and services organised by psychiatric social workers in a rural community for identification and treatment linkage provision for mental health problems. Aim of the Study: The aim of the survey is to find out the mental health related problems in the rural community and to provide psychiatric social work services in the rural community by providing linkages to community based psychiatric extension services. Methods:  This research cum intervention program used a survey method, with the universe of the study consisting of all the persons residing in Samardoloni village in Sootea Block, in Sonitpur district of Assam.  People, who are permanent members of their respective household of Samardoloni village, formed the sample for the present study. Household survey was done with data being collected through the semi-structured tool for socio-demographic data and clinical information. Psychiatric social work programme was conducted in the community for awareness' and de-stigmatization of mental illness. Results: In the survey, 271 households were assessed and it was found that in the surveyed village, forty-seven (47) persons were identified as having mental illness and other related problems; eleven (11) persons were having Epilepsy, thirteen (13) persons had Psychosis, eight (8) persons had Somatization disorder, five (5) persons had Child related psychiatric disorder  and ten(10) people were having substance related disorders. Awareness program on mental health and illness was conducted in the community at three levels. First, at the Community-level, sensitization for acceptance and de-stigmatizations of mental illness, secondly, at the School-level, addressing various problems of children and adolescents for teachers and children, and thirdly, at the group level, targeted knowledge and information was given to the persons identified with mental disorders during the survey and were further motivated to access treatment at the local PHC where psychiatric treatment was available. Conclusion: Psychiatric social worker services can address various mental health issues through inter-sectoral collaboration with local rural functionaries. Focused activities for various groups can be useful at community-level for identifications, acceptance, de-stigmatization of mental illness and providing psychosocial care in the community. The role of a psychiatric social worker as a networker for linkage building and coordinating is emphasized apart from being a researcher and as an interventionist in psychiatric social work.  Initiative resulted in treatment accession for 37 patients of the 47 identified. Community participation formed an integral component in mobilizing and utilizing community members and for early identification and linkage provision for treatment. The initiative impacted inter-sectoral systems to plan, coordinate, assess, educate, counsel and link- up and sustain within the community resources. Keywords: Community, psychiatric social work, mental illnes

Crypto-Harmonic Oscillator in Higher Dimensions: Classical and Quantum Aspects

We study complexified Harmonic Oscillator models in two and three dimensions. Our work is a generalization of the work of Smilga \cite{sm} who initiated the study of these Crypto-gauge invariant models that can be related to $PT$-symmetric models. We show that rotational symmetry in higher spatial dimensions naturally introduces more constraints, (in contrast to \cite{sm} where one deals with a single constraint), with a much richer constraint structure. Some common as well as distinct features in the study of the same Crypto-oscillator in different dimensions are revealed. We also quantize the two dimensional Crypto-oscillator.Comment: 17 pages, Latex, enlarges version, added ref.s., accepted in J.Phys.A, slight alteration in reference section and text, matches journal versio