291 research outputs found

    Broodstock development and breeding of black-finned anemone fish Amphiprion nigripes Regan, 1908 under captive conditions

    Get PDF
    Due to recent advances in saltwater fish-keeping, there is great demand for marine ornamental fishes, especially for those from the tropical coral reef habitats. Exploitation of wild stock has depleted their availability, thus making it difficult to meet the market demand. This paper describes the development of brood stock and a viable technology for commercial production of black-finned anemone fish Amphiprion nigripes. Fecundity of this species ranged from 350-450 per spawning and continuous spawning could be achieved at 12 to 16 days interval. The incubation period was 6 to 7 days. Larvae were successfully fed with rotifer Brachionus plicatilis, Artemia nauplii and particulate feed at appropriate stages of development using green-water system of larval rearing. Juveniles with average size of 15 mm were produced in 40 days with an average survival rate of 72% and marketable size of 25 mm or more was achieved in less than four months time

    A Comparative Analysis on the Causes of Occupational Stress among Men and Women Employees and its Effect on Performance at the workplace of Information Technology Sector, Hyderabad

    Get PDF
    The research study presents the outcome of a comparative analysis on causes of occupational stress among the Men and Women employees and its effect on the employee performance at the workplace of Information Technology Sector (ITS), Hyderabad. A survey of 200 employees consisting 110 Men and 90 Women working in the IT sector was carried out to assess the six independent stress causing factors Job related, Organizational Related, Career, Physiological, Behavioral and Individual factors and its effect on employees’ Performance a dependent factor. The descriptive analysis, correlation techniques and parametric statistics like t-test, F-test and multiple regression analysis carried out to arrive at the conclusions. To measure the reliability of the scale used for this study, and internal consistencies of the survey questionnaire, the reliability static Cronbach’s alpha (C-alpha) and Spearman-Brown split-half reliability statistics were estimated. The overall C-alpha is 0.89 whereas the Spearman-Brown split half statistic is 0.83. The C-alpha values ranged from 0.62 to 0.76 for Men and 0.60 to 0.74 for Women, for all the 6 independent and one dependent factor. The results of the study indicate that the medium level occupational stress exists at the workplace in general, effecting the performance moderately. Health-wise, some employees developed chronic neck and back pain, an effect of long sitting hours at work. The study confirms that Women will have more stress than Men, however the factors causing the stress among the Men and Women are not similar

    Acute metheamoglobinemia due to nitrobenzene poisoning: Case series

    Get PDF
    Nitrobenzene is a nitrite compound; its toxic effects are due to its ability to convert hemoglobin to\ud methaemoglobin by oxidizing iron. The clinical features of nitrobenzene poisoning vary based on the\ud concentration of methaemoglobin in blood. Immediate identification based on clinical features, odour of the\ud compound with supporting evidence of increased methaemoglobin levels will help in a timely intervention thus\ud preventing fatal outcome. Early haemodynamic and ventilator support along with administration of methylene\ud blue as an antidote has been proved crucial in saving some lives. An acute nitrobenzene poisoning presenting with\ud methaemoglobinemia is becoming quite common in this part of the country. Here authorsreport a series of cases\ud of nitrobenzene poisoning where immediate clinical evaluation, with repeated intravenous methylene blue saved\ud three patients, but two patients presenting late and with heavy exposure could not be save

    Evaluating rice germplasm for iron and zinc concentration in brown rice and seed dimensions

    Get PDF
    The lack of micronutrients such as Fe and Zn in staple food crops is a widespread nutrition and health problem in developing countries. Biofortification is one of the sustainable approaches, for improving the Fe and Zn content and their bioavailability in rice grain. Screening germplasm for Fe and Zn content is the initial step of biofortification. We analyzed brown rice of 126 accessions of rice genotypes for Fe and Zn concentration. Iron concentration ranged from 6.2 ppm to 71.6 ppm and zinc from 26.2 ppm to 67.3 ppm. Zn concentration and grain elongation (-0.25) was significantly correlated. The wild accessions had the highest Fe and Zn. Thus, wild species are a good source for biofortification of popular rice cultivars using conventional, acceptable, non transgenic methods. Â

    MENCA experiment aboard India’s Mars Orbiter Mission

    Get PDF
    The Mars Exospheric Neutral Composition Analyser (MENCA) aboard the Indian Mars Orbiter Mission (MOM) is a quadrupole mass spectrometer-based experiment. Making use of the highly elliptical and low inclination (~150°) orbit of MOM, MENCA will conduct in situ measurements of the composition and radial distribution of the Martian neutral exosphere in the 1–300 amu mass range in the equatorial and low latitudes of Mars. The functionality of MENCA has been tested during the Earth-bound and heliocentric phases of MOM before its operation in the Martian orbit. This article describes the scientific objectives, instrument details, design and development, test and evaluation, and calibration of the MENCA instrument

    Identification of prognostic phenotypes of esophageal adenocarcinoma in two independent cohorts.

    Get PDF
    BACKGROUND & AIMS: Most patients with esophageal adenocarcinoma (EAC) present de novo. Although this may be due to inadequate screening strategies, the precise reason for this observation is not clear.. We compared survival of patients with prevalent EAC with and without synchronous BE/intestinal metaplasia of the esophagus (IM) at the time of EAC diagnosis. METHODS: Clinical data were studied using Cox Proportional Hazards regression to evaluate the effect of synchronous BE/IM on EAC survival independent of age, sex, TNM stage and tumor location. Two cohorts from the Mayo Clinic and a U.K. multicenter prospective cohort were included. RESULTS: The Mayo cohort had 411 EAC patients with 49.3% with BE/IM demonstrating a survival benefit as compared to those without (hazard ratio (HR), 0.44; 95% CI: 0.34 - 0.57, P<0.001). In a multivariable analysis BE/IM was associated with better survival independent of age, sex, stage and tumor location and length (adjusted HR: 0.66, 95% CI: 0.5-0.88, P=0.005). The UK cohort contained 1417 patients, 45% with BE/IM demonstrating a survival benefit as compared with non-BE/IM patients (HR 0.59, 95% CI: 0.5-0.69, P<0.001) with continued significance in multivariable analysis that included age, sex, stage, and tumor location (adjusted HR 0.77, 95% CI: 0.64-0.93, P=0.006). CONCLUSION: Two types of esophageal adenocarcinoma can be characterized based on the presence or absence of Barrett's epithelium. These findings have implications for understanding the etiology of EAC and determining prognosis as well as for development of optimal clinical strategies to identify patients at risk

    Multiorder coherent Raman scattering of a quantum probe field

    Full text link
    We study the multiorder coherent Raman scattering of a quantum probe field in a far-off-resonance medium with a prepared coherence. Under the conditions of negligible dispersion and limited bandwidth, we derive a Bessel-function solution for the sideband field operators. We analytically and numerically calculate various quantum statistical characteristics of the sideband fields. We show that the multiorder coherent Raman process can replicate the statistical properties of a single-mode quantum probe field into a broad comb of generated Raman sidebands. We also study the mixing and modulation of photon statistical properties in the case of two-mode input. We show that the prepared Raman coherence and the medium length can be used as control parameters to switch a sideband field from one type of photon statistics to another type, or from a non-squeezed state to a squeezed state and vice versa.Comment: 12 pages, 7 figures, to be published in Phys. Rev.

    Common variants in CLDN2 and MORC4 genes confer disease susceptibility in patients with chronic pancreatitis

    Get PDF
    A recent Genome-wide Association Study (GWAS) identified association with variants in X-linked CLDN2 and MORC4 and PRSS1-PRSS2 loci with Chronic Pancreatitis (CP) in North American patients of European ancestry. We selected 9 variants from the reported GWAS and replicated the association with CP in Indian patients by genotyping 1807 unrelated Indians of Indo-European ethnicity, including 519 patients with CP and 1288 controls. The etiology of CP was idiopathic in 83.62% and alcoholic in 16.38% of 519 patients. Our study confirmed a significant association of 2 variants in CLDN2 gene (rs4409525—OR 1.71, P = 1.38 x 10-09; rs12008279—OR 1.56, P = 1.53 x 10-04) and 2 variants in MORC4 gene (rs12688220—OR 1.72, P = 9.20 x 10-09; rs6622126—OR 1.75, P = 4.04x10-05) in Indian patients with CP. We also found significant association at PRSS1-PRSS2 locus (OR 0.60; P = 9.92 x 10-06) and SAMD12-TNFRSF11B (OR 0.49, 95% CI [0.31–0.78], P = 0.0027). A variant in the gene MORC4 (rs12688220) showed significant interaction with alcohol (OR for homozygous and heterozygous risk allele -14.62 and 1.51 respectively, P = 0.0068) suggesting gene-environment interaction. A combined analysis of the genes CLDN2 and MORC4 based on an effective risk allele score revealed a higher percentage of individuals homozygous for the risk allele in CP cases with 5.09 fold enhanced risk in individuals with 7 or more effective risk alleles compared with individuals with 3 or less risk alleles (P = 1.88 x 10-14). Genetic variants in CLDN2 and MORC4 genes were associated with CP in Indian patients

    Fracture fixation in the operative management of hip fractures (FAITH): an international, multicentre, randomised controlled trial

    Get PDF
    © 2017 Elsevier Ltd Background Reoperation rates are high after surgery for hip fractures. We investigated the effect of a sliding hip screw versus cancellous screws on the risk of reoperation and other key outcomes. Methods For this international, multicentre, allocation concealed randomised controlled trial, we enrolled patients aged 50 years or older with a low-energy hip fracture requiring fracture fixation from 81 clinical centres in eight countries. Patients were assigned by minimisation with a centralised computer system to receive a single large-diameter screw with a side-plate (sliding hip screw) or the present standard of care, multiple small-diameter cancellous screws. Surgeons and patients were not blinded but the data analyst, while doing the analyses, remained blinded to treatment groups. The primary outcome was hip reoperation within 24 months after initial surgery to promote fracture healing, relieve pain, treat infection, or improve function. Analyses followed the intention-to-treat principle. This study was registered with ClinicalTrials.gov, number NCT00761813. Findings Between March 3, 2008, and March 31, 2014, we randomly assigned 1108 patients to receive a sliding hip screw (n=557) or cancellous screws (n=551). Reoperations within 24 months did not differ by type of surgical fixation in those included in the primary analysis: 107 (20%) of 542 patients in the sliding hip screw group versus 117 (22%) of 537 patients in the cancellous screws group (hazard ratio [HR] 0·83, 95% CI 0·63–1·09; p=0·18). Avascular necrosis was more common in the sliding hip screw group than in the cancellous screws group (50 patients [9%] vs 28 patients [5%]; HR 1·91, 1·06–3·44; p=0·0319). However, no significant difference was found between the number of medically related adverse events between groups (p=0·82; appendix); these events included pulmonary embolism (two patients [\u3c1%] vs four [1%] patients; p=0·41) and sepsis (seven [1%] vs six [1%]; p=0·79). Interpretation In terms of reoperation rates the sliding hip screw shows no advantage, but some groups of patients (smokers and those with displaced or base of neck fractures) might do better with a sliding hip screw than with cancellous screws. Funding National Institutes of Health, Canadian Institutes of Health Research, Stichting NutsOhra, Netherlands Organisation for Health Research and Development, Physicians\u27 Services Incorporated
    corecore