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  • 1
    Online Resource
    Online Resource
    SINGLE AND PRODUCT MOMENTS OF ORDER STATISTICS FROM SYMMETRICALLY TRUNCATED LOGISTIC DISTRIBUTION
    Walter de Gruyter GmbH ; 1983
    In:  Demonstratio Mathematica Vol. 16, No. 4 ( 1983-10-1)
    Details
    In: Demonstratio Mathematica, Walter de Gruyter GmbH, Vol. 16, No. 4 ( 1983-10-1)
    Type of Medium: Online Resource
    ISSN: 2391-4661
    URL: Article
    DOI: 10.1515/dema-1983-0405
    Language: Unknown
    Publisher: Walter de Gruyter GmbH
    Publication Date: 1983
    detail.hit.zdb_id: 2693084-5
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  • 2
    Online Resource
    Online Resource
    Micellar Characterisation of Saponin from Sapindus Mukorossi
    Walter de Gruyter GmbH ; 2006
    In:  Tenside Surfactants Detergents Vol. 43, No. 5 ( 2006-11-01), p. 262-268
    Details
    In: Tenside Surfactants Detergents, Walter de Gruyter GmbH, Vol. 43, No. 5 ( 2006-11-01), p. 262-268
    Abstract: The micellar characteristics of a non-ionic, natural surfactant, saponin obtained from the soapnut tree, Sapindus mukorossi, were studied in aqueous solution. Critical micelle concentration of Sapindus saponin determined using conductivity measurements and UV absorption studies was 0.045 wt%. Increase in temperature and salt concentration led to decrease in the critical micelle concentration of Sapindus saponin. The critical micelle concentration was found to increase with increase in hardness of water and increase in pH. The micellar aggregation number was determined using cyclic voltammetry and was found to be between 13 and 21. The size of the Sapindus saponin micelles was determined using intrinsic viscosity measurements and was found to be independent of saponin concentration for concentrations above the CMC. Solubilisation of two types of crude oils and a vegetable oil was studied using micellar solubilisation technique. At lower concentrations of the surfactant, the micellar solubilisation of crude oils in saponin was better than synthetic surfactants like Triton X100® and SDS where as, the solubilisation of vegetable oil was better in synthetic surfactants.
    Type of Medium: Online Resource
    ISSN: 2195-8564 , 0932-3414
    URL: Article
    DOI: 10.3139/113.100315
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2006
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  • 3
    Online Resource
    Online Resource
    Association between a guided meditation practice, sleep and psychological well-being in type 2 diabetes mellitus patients
    Walter de Gruyter GmbH ; 2018
    In:  Journal of Complementary and Integrative Medicine Vol. 15, No. 4 ( 2018-10-25)
    Details
    In: Journal of Complementary and Integrative Medicine, Walter de Gruyter GmbH, Vol. 15, No. 4 ( 2018-10-25)
    Abstract: Type 2 diabetes mellitus [T2DM] is one of the leading causes for mortality. This study examined the role of an self-awareness based guided meditation practice, Cyclic Meditation [CM] on perceived stress, anxiety, depression, sleep and quality of life in T2DM patients. Design A single arm pre-post design was used for the study. Setting The study was conducted in an auditorium for general public diagnosed with T2DM in Ernakulam, Kerala, India. Subjects Subjects were 30 T2DM patients, both male and female of age 50.12 ± 11.15 years and BMI 25.14 ± 4.37 Kg/m2 and not having a history of hospitalisation were randomly recruited for the study following advertisements in national dailies. Intervention Participants completed a supervised CM programs in the evenings, 5 days a week for 4 weeks, in addition to their regular medication. Measures Perceived stress, anxiety and depression were assessed with Perceived Stress Scale, State Anxiety Inventory and Beck’s depression inventory, respectively. Sleep and quality of life were assessed with Pittsburgh Sleep Quality Index and WHO-Quality of Life – BREF respectively. Analysis Changes in the outcome measures from baseline to 4 weeks were compared using paired “t” test. Results After 4 weeks, the quality of life and sleep scores increased 7.1% [ p = 0.001] and 32.7% [ p = 0.001], respectively. The perceived stress, anxiety and depression reduced 26.1% [ p = 0.001], 16.01% [ p = 0.003] and 37.63% [ p = 0.006] as compared to their baseline reports. The CM practice also reduced daytime dysfunction. Conclusions A guided self-awareness based meditation program was safe and effective in improving depression, anxiety, perceived stress and enhance sleep and quality of life in T2DM patients, which could be helpful in reducing the future complications of T2DM. Mind management is essential along with medical management to achieve better clinical results.
    Type of Medium: Online Resource
    ISSN: 1553-3840 , 2194-6329
    URL: Article
    DOI: 10.1515/jcim-2015-0026
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2018
    detail.hit.zdb_id: 2197618-1
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  • 4
    Online Resource
    Online Resource
    Diazo-pyrazole analogues as photosensitizers in dye sensitised solar cells: tuning for a better photovoltaic efficiency using a new modelling strategy using experimental and computational data
    Walter de Gruyter GmbH ; 2021
    In:  Zeitschrift für Physikalische Chemie Vol. 235, No. 9 ( 2021-09-27), p. 1227-1245
    Details
    In: Zeitschrift für Physikalische Chemie, Walter de Gruyter GmbH, Vol. 235, No. 9 ( 2021-09-27), p. 1227-1245
    Abstract: The designing of a dye sensitised solar cell (DSSC) is one of the frontiers in harvesting solar energy as it provides an alternative to economic photovoltaic devices with increased efficiency. In this manuscript, we report a new methodology using experimental and theoretical data for the evaluation of the photosensitiser activity of organic dyes using theoretical simulations and experimental cell efficiency data. As a representative example, we designed a series of 54 novel pyrazole derivatives which are subjected to TD-DFT simulations (CAM-B3LYP/6-311G++ (2d, p)) and photovoltaic modelling. Data from computational simulations, as well as known experimental cells, are used for the calculation of photovoltaic efficiency. We selected pyrazole derivatives because of its proven use in DSSC as an effective dopant in a blended polymer electrolyte in nanocrystalline DSSC. Fine-tuning with the effect of substitution and with the π spacers at the ortho, meta and para positions for −OCH 3 , −OH, −CHO, −NO 2 respectively were done. Enhanced efficiency of 7.439% was observed as compared to the standard cell of efficiency of 5.530%. An increase in efficiency was not observed with the effect of π spacers. The newly designed dyes demonstrate desirable energetic and spectroscopic parameter that can lead to efficient metal-free organic dye sensitiser for DSSC’s. The main advantage of this strategy is the incorporation of both simulated and experimental data. It will reduce the possible errors from the simulations and also, helps in performing time-consuming experimental studies.
    Type of Medium: Online Resource
    ISSN: 0942-9352 , 2196-7156
    URL: Article
    DOI: 10.1515/zpch-2020-1722
    RVK:
    VA 8450
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2021
    detail.hit.zdb_id: 201103-7
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  • 5
    Online Resource
    Online Resource
    Risk Factors for Coronary Artery Diseases: A Study Among Patients With Ischemic Heart Disease in India (Kerala)
    Walter de Gruyter GmbH ; 2013
    In:  Journal of Biomedical and Clinical Research Vol. 6, No. 2 ( 2013-12-1), p. 118-124
    Details
    In: Journal of Biomedical and Clinical Research, Walter de Gruyter GmbH, Vol. 6, No. 2 ( 2013-12-1), p. 118-124
    Abstract: Coronary artery disease (CAD) is a condition that develops due to accumulation of atherosclerotic plaque in the epicardial coronary arteries, leading to myocardial ischemia. It is the leading cause of death worldwide and is a common complex disease. A study was carried out in a group of 496 patients with acute coronary syndrome or with angiographic or stress test evidence for coronary artery disease, admitted to the Department of Cardiology at Lourdes Heart Institute and Neuro Centre during the period June-August 2012. The risk factors studied were hypertension, diabetes mellitus, dyslipidemia, body mass index, smoking and family history of CAD. The results demonstrated that in both males and females of the Indian population studies, diabetes and dyslipidemia were major risk factors for CAD, while hypertension was not a major risk factor. Therefore, early detection and treatment of diabetes mellitus and dyslipidemia play a vital role in prevention of CAD in Indian population.
    Type of Medium: Online Resource
    ISSN: 1313-9053
    URL: Article
    DOI: 10.1515/jbcr-2015-0112
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2013
    detail.hit.zdb_id: 2860343-6
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  • 6
    Online Resource
    Online Resource
    Corrosion characteristics of sulfate-reducing bacteria (SRB) and the role of molecular biology in SRB studies: an overview
    Walter de Gruyter GmbH ; 2016
    In:  Corrosion Reviews Vol. 34, No. 1-2 ( 2016-03-1), p. 41-63
    Details
    In: Corrosion Reviews, Walter de Gruyter GmbH, Vol. 34, No. 1-2 ( 2016-03-1), p. 41-63
    Abstract: Sulfate-reducing bacteria (SRB), an anaerobic bacterial group, are found in many environments like freshwater, marine sediments, agricultural soil, and oil wells where sulfate is present. SRB derives energy from electron donors such as sulfate, elemental sulfur or metals, and fermenting nitrate. It is the major bacterial group involved in the microbiologically influenced corrosion (MIC), souring, and biofouling problems in oil-gas-producing facilities as well as transporting and storage facilities. SRB utilizes sulfate ions as an electron acceptor and produce H 2 S, which is an agent of corrosion, causing severe economic damages. Various theories have been proposed on the direct involvement of H 2 S and iron sulfides in corrosion; H 2 S directly attacks and causes corrosion of metals and alloys. Many reviews have been presented on the aforementioned aspects. This review specifically focused on SRB corrosion and the role of molecular biology tools in SRB corrosion studies viz. cathodic and anodic depolarization theories, corrosion characteristics of thermophilic SRB and influence of hydrogenase, temperature, and pressure in thermophilic SRB corrosion, SRB taxonomy, molecular approaches adopted in SRB taxonomical studies, sulfate and citrate metabolism analyses in completed SRB genomes, and comparative studies on SRB’s dissimilatory sulfite reductase structures.
    Type of Medium: Online Resource
    ISSN: 2191-0316 , 0334-6005
    URL: Article
    DOI: 10.1515/corrrev-2015-0055
    Language: Unknown
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2016
    detail.hit.zdb_id: 2592645-7
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