Selected Experimental Results from Heavy Ion Collisions at LHC

We review a subset of experimental results from the heavy-ion collisions at the Large Hadron Collider (LHC) facility at CERN. Excellent consistency is observed across all the experiments at the LHC (at center of mass energy of 2.76 TeV) for the measurements such as charged particle multiplicity density, azimuthal anisotropy coefficients and nuclear modification factor of charged hadrons. Comparison to similar measurements from the Relativistic Heavy Ion Collider (RHIC) at lower energy (center of mass energy of 200 GeV) suggests that system formed at LHC has a higher energy density, larger system size, and lives for a longer time. These measurements are compared to model calculations to obtain physical insights on the properties of matter created at the RHIC and LHC.Comment: 19 pages and 26 figures. Accepted for publication in the special issue of Advances in High Energy Physics dedicated to Physics of Quark Gluon Plasma: An Update and Status Repor

Viability of Bianchi type V Universe in f(R,T)=f1(R)+f2(R)f3(T)f(R,T)= f_{1}(R)+f_{2}(R)f_{3}(T) gravity

In this paper, we examine the viability of Bianchi type V universe in $f(R,T)$ theory of gravitation. To solve the field equations, we have considered the power law for scale factor and constructed a singular Lagrangian model which is based on the coupling between Ricci scalar R and trace of energy-momentum tensor T. We find the constraints on Hubble constant $H_{0}$ and free parameter $n$ with 46 observational Hubble dataset and obtain pretty satisfactory results. The physical features of the model and transitional behavior of equation of state (EOS) parameter are analyzed. We examine the nature of physical parameters and validity of energy conditions as well as stability condition. We also present the Om(z) and statefinder diagnostic analysis for the derived model.Comment: 11 Figures, 12 page

A hospital based eye health survey to see the pattern of eye diseases in Uttarakhand, India

Background: The cause of blindness and low vision differs in different countries and communities. The requirements of eye services also vary according to the need of the native population. Studies showing the pattern of ocular morbidity are needed to build better infrastructure of eye care facilities.Methods: This prospective study was conducted in eye department of Government Doon Medical College, Dehradun, Uttarakhand, India between April 2016 to May 2016.the patients were seen in eye OPD by ophthalmologists. Proper anterior and posterior segment evaluation was done and patients were treated accordingly. Data including the registration number, name of the patient, age, sex and diagnosis were recorded in OPD register and analysed.Results: Total 1259 patients were examined. 605 were male and 654 were female. The mean age of male patients was 43 years and for females was 41.33 years. Refractive error (20.97%) was the commonest ocular morbidity in our study followed by cataract (20.02%), follow ups of cataract surgeries and allergic conjunctivitis. Besides refractive errors total 137 (10.88%) patients were presbyopic.Conclusions: This study shows a slightly exceeding number of female patients, which shows that females are equally aware of their health problems. Refractive errors are the most common cause in present study with cataract being second, may be because of higher mean age of the patients presenting to OPD. In present study allergic conjunctivitis was third commonest cause of ocular morbidity in our district may be due to windy weather. The leading causes of ocular morbidity in our study were refractive errors, cataract, allergic conjunctivitis and, presbyopia. The high prevalence of refractive errors and cataracts shows that hospital still requires an improved infrastructure with spectacle provision to the patients

PHARMACEUTICO ANALYTICAL STUDY AND COMPARATIVE ANTIMICROBIAL EFFECT OF HARTALA BHASMA AND HARTALAGODANTI BHASMA

Hartala (Orpiment) is a deep orange-yellow colored mineral with formula As2S3 and Godanti (Gypsum) is a very soft sulfate mineral with the chemical formula CaSO4 2H2O. Hartala bhasma and Hartalagodanti bhasma is being in practice widely in Ayurvedic formulation in spite of its toxic nature. This study includes, Sodhan (purification) of Haratala and Godanti, Marana of Hartala, Godanti and Hartalagodanti, Chemical Analysis of Hartala bhasma and Hartalagodanti bhasma and Comparative antimicrobial study of Hartala bhasma and Hartalagodanti bhasma. Antimicrobial activity of Hartala bhasma and Hartalagodanti bhasma was conducted against gram positive, gram negative bacteria to evaluate its efficacy as broad spectrum antibiotic. So an attempt had been made to put Hartala bhasma and Hartalagodanti bhasma as an antimicrobial agent. Hartala bhasma and Hartalagodanti bhasma has an effective antimicrobial activity against Streptococcus pneumoniae, Klebsiella pneumoniae, Pseudomonas aeruginosa and Staphylococcus aureus in both Diffusion methods (Kirby- Bauer disc diffusion method and Stokes disc diffusion method) and Dilution methods (Broth dilution method & Agar dilution method)

Organoaxial volvulus of descending colon: a case report

“Colonic volvulus” refers to the twisting of colon, which most commonly involves sigmoid colon causing obstruction, ischemia and gangrene. But very rarely segment of descending colon can be involved. This is a case of 42 year old male with vomiting, abdomen pain and distension since one day, showing organoaxial volvulus of descending colon loop with a twist of mesentery

Personal Social Capital and Socio-occupational Function of Persons with Schizophrenia: A Comparative Study

Background: Personal social capital is an individual’s networks and connections between individuals that can provide support which is characterized by reciprocity, trustworthiness and resources. Individual who are excluded from accessing social capital have a higher risk of schizophrenia and may have informal social control. Social functioning of individuals with schizophrenia gets disturbed therefore improving the functioning levels is considered to be an important goal in treating schizophrenia. Aim: To assess and compare personal social capital and socio-occupational functioning of patients with schizophrenia and normal controls. Materials and Methods: The sample consisted of 60 individuals (30 patients diagnosed with schizophrenia and 30 normal population) selected from outpatient department (OPD) of the Central Institute of Psychiatry, Ranchi by using purposive sampling method. Positive and negative syndrome scale (for study group) and General health questionnaire (for normal population) applied for screening. Participants who fulfilled inclusion criteria were informed about study and consent was obtained. Socio-demographic and clinical datasheet, Personal Social Capital Scale and socio-occupational functioning scale was administered. Results: Present study shows significant difference in personal social capital and socio-occupational functioning of persons with schizophrenia and normal controls. Conclusion: The patients with schizophrenia hold lower personal social capital and socio-occupational functioning than normal population. Personal social capital and socio-occupational functioning showed significant positive correlation therefore improvement in socio-occupational functioning can help to enhance personal social capital. Keywords: Schizophrenia, personal social capital, socio-occupational functionin

Deterrent Action of Acamprosate: A Case Report

Background: Among the three pharmacological agents available for alcohol de-addiction, acamprosate and naltrexone are considered anti-craving agents. Among these two, acamprosate is better tolerated, has low abuse potential, and is safe in overdose. But the mechanism of action of acamprosate still remains unclear. Case Report: This case report gives a description of a 46-year-old male patient diagnosed with alcohol dependence syndrome with prior admissions and failed treatments with naltrexone and baclofen. He developed skin reaction after relapsing with alcohol use while receiving acamprosate therapy. The severity of the adverse effects varied with the amount of alcohol consumed by the patient. This suggests the possibility of deterrent-like action of acamprosate in our patient. The symptoms reduced after abstinence from alcohol and the patient was continued on acamprosate and relapse prevention therapy (RPT). Conclusion: Clinicians should consider the possible deterrent effect of acamprosate and manage such patients accordingly

Performance characteristics and reliability assessment of self-excited induction generator for wind power generation

Abstract The paper presents the performance analysis‐based reliability estimation of a self‐excited induction generator (SEIG) using the Monte‐Carlo simulation (MCS) method with data obtained from a self‐excited induction motor operating as a generator. The global acceptance of a SEIG depends on its capability to improve the system's poor voltage regulation and frequency regulation. In the grid‐connected induction generator, the magnetizing current is drawn from the grid, making the grid weak. In contrast, in the SEIG stand‐alone operation, an external capacitor arrangement is implemented to render the reactive power support. This capacitor arrangement is connected across the stator terminals during the stand‐alone configuration of SEIG. The capacitor serves two purposes, which include voltage build‐up and power factor improvement. Therefore, the paper deals with obtaining the minimum capacitor value required for SEIG excitation in isolated mode applications, including stand‐alone wind power generation. The SEIG performance characteristics have been evaluated for different SEIG parameters. The simulation and experimental results are then compared and found satisfactory. Then, SEIG reliability is estimated considering the MCS method utilizing SEIG excitation's failure and success rates during experimental work in the laboratory. Finally, the SEIG reliability evaluation is performed considering different wind speeds

A Non aqueous Formulation for Efficient Detoxification of Chemical Weapons at Sub zero Temperatures

An effective decontamination methodology based on nucleophilic non-aqueous decontaminant has been developed against chemical weapons sulfur mustard and soman. This new formulation consists of non-aqueous solution of 2-aminoethanol (60%, w/v), potassium hydroxide (2%, w/v), and N-methyl-2-pyrrolidone (38 %, w/v) and detoxified more than 99 % of sulfur mustard and soman within a period of 30 min at -35 °C. It was found to be operable over a wide range of temperatures starting from -35 °C to +55 °C without losing its fluidity and detoxicant efficiency at sub-zero temperatures promising hassle-free application against chemical weapons. It degrades sulfur mustard to divinyl sulfide and 2-chloroethyl vinyl sulfide and converted soman into O-pinacolyl O’-(2-amino) ethyl methylphosphonate, which are relatively non toxic to humans. This formulation is environmentally benign, relatively non corrosive and has an improved capability to dissolve and decontaminate chemical weapons within 15 minutes at ambient conditions. This approach paves the way for efficient and rapid decontamination platform for chemical weapons and holds considerable promise for field application in near future