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  1. Article ; Online: EFFECT OF HIGH INITIAL STRESS ON THE PROPAGATION OF STONELEY WAVES AT THE INTERFACE OF TWO ISOTROPIC ELASTIC INCOMPRESSIBLE MEDIA

    A. DASGUPTA

    Proceedings of Indian National Science Academy, Vol 12, Iss

    2015  Volume 7

    Abstract: EFFECT OF HIGH INITIAL STRESS ON THE PROPAGATION OF STONELEY WAVES AT THE INTERFACE OF TWO ISOTROPIC ELASTIC INCOMPRESSIBLE ... ...

    Abstract EFFECT OF HIGH INITIAL STRESS ON THE PROPAGATION OF STONELEY WAVES AT THE INTERFACE OF TWO ISOTROPIC ELASTIC INCOMPRESSIBLE MEDIA
    Keywords Science ; Q
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher Indian National Science Academy
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Denaturing Gradient Gel Electrophoresis (DGGE) Analysis Indicating Increased Microbial Diversity in Landfill Area Near Conserved Wetland

    M. B. Chakraborty / S. R. Patgiri / A. S. Rahman / A. Dasgupta and G. Pegu

    Nature Environment and Pollution Technology, Vol 22, Iss 2, Pp 1003-

    2023  Volume 1007

    Abstract: The ecological balance of an ecosystem has a relation to its biodiversity. Although it has been established that biodiversity and ecological stability are related, generalization about the exact nature of this relation remains elusive and more so in ... ...

    Abstract The ecological balance of an ecosystem has a relation to its biodiversity. Although it has been established that biodiversity and ecological stability are related, generalization about the exact nature of this relation remains elusive and more so in microbial diversity. A growing volume of studies has indicated that anthropogenic activities impact biodiversity, but it is difficult to generalize the impact of anthropogenic activities on microbial diversity. Landfilling by municipal solid waste is one such activity where microbes play a major role, and leachates are released from the landfill, altering the soil’s physical and chemical nature. Change in factors like carbon source, pH, and toxicity of the soil is most likely to affect the indigenous microflora of the soil. The present study was undertaken to compare the microbial diversity of soil receiving landfill leachate with that of the soil not receiving any landfill leachate to assess the impact of the landfilling activity on microbial diversity. The landfill site selected for the study was that of Kamrup Metro District of Assam, located at Boragaon, near the Ramsar wetland called Deeporbeel. By using the Denaturing Gradient Gel Electrophoresis (DGGE) method, it has been found that the microbial diversity of the soil receiving leachate was higher than that of the soil not receiving any leachate from the landfill.
    Keywords anthropogenic disturbance ; landfill ; leachate ; microbial diversity ; dgge ; Environmental effects of industries and plants ; TD194-195 ; Science (General) ; Q1-390
    Subject code 910
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher Technoscience Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: ON THE EFFECT OF GRAVITY-INDUCED INITIAL STRESSESS ON THE DISTURBANCES IN AN ELASTIC HALF-SPACE DUE TO A MOVING LOAD

    A. DASGUPTA, S. K. CHAKRABORTY

    Proceedings of Indian National Science Academy, Vol 13, Iss

    2015  Volume 11

    Abstract: ON THE EFFECT OF GRAVITY-INDUCED INITIAL STRESSESS ON THE DISTURBANCES IN AN ELASTIC HALF-SPACE DUE TO A MOVING ... ...

    Abstract ON THE EFFECT OF GRAVITY-INDUCED INITIAL STRESSESS ON THE DISTURBANCES IN AN ELASTIC HALF-SPACE DUE TO A MOVING LOAD
    Keywords Science ; Q
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher Indian National Science Academy
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Genetic Variation of Blood Group Polymorphism among an Endogamous Human Population from Andhra Pradesh, India

    A Dasgupta / SG Reddy / PJ Varma / DSRS Prakash

    International Journal of Scientific Study, Vol 1, Iss 2, Pp 22-

    2013  Volume 25

    Abstract: Genetic polymorphic traits like blood groups are widely used genetic markers in human population genetics. The present paper reports the genetic variation in phenotype and allele frequencies of ABO and Rh (D) blood groups among Kshatriyas, an endogamous ... ...

    Abstract Genetic polymorphic traits like blood groups are widely used genetic markers in human population genetics. The present paper reports the genetic variation in phenotype and allele frequencies of ABO and Rh (D) blood groups among Kshatriyas, an endogamous population from Visakhapatnam district, Andhra Pradesh, India. Blood samples of 100 unrelated Kshatriyas, individuals were screened for ABO and Rh (D) blood groups. The order of occurrence of ABO phenotypes is O > B > A > AB. The corresponding allele frequencies of O, A and B are 0.420, 0.155 and 0.415, respectively. The allele frequency of D (0.990) is more than d (0.010). The present results were compared with the other populations to understand the population variations.
    Keywords Genetic polymorphism ; Genetic variation ; Blood groups ; Science (General) ; Q1-390 ; Science ; Q ; DOAJ:Science (General) ; DOAJ:Science General
    Language English
    Publishing date 2013-09-01T00:00:00Z
    Publisher Medical Students Association of India
    Document type Article ; Online
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  5. Article ; Online: Status of 25(OH)D levels in pregnancy

    A Dasgupta / U K Saikia / D Sarma

    Indian Journal of Endocrinology and Metabolism, Vol 16, Iss 8, Pp 405-

    A study from the North Eastern part of India

    2012  Volume 407

    Abstract: Introduction: An increased prevalence of vitamin D deficiency has been reported from across the globe including India. Various studies have shown an intrinsic relation between various parameters of maternal and fetal wellbeing with maternal vitamin D ... ...

    Abstract Introduction: An increased prevalence of vitamin D deficiency has been reported from across the globe including India. Various studies have shown an intrinsic relation between various parameters of maternal and fetal wellbeing with maternal vitamin D status during pregnancy. Aims: To look for any association of vitamin D status during pregnancy with the modifiable factors - extent of sun exposure, sunscreen use, vegetarian diet, dietary calcium intake, and multivitamin supplementation. Materials and Methods: A total of 50 pregnant females, aged 20-40 years were studied during the first trimester of pregnancy. Fifty age and body mass index (BMI) matched females were taken as controls. Serum 25(OH)D was measured by radioimmunoassay (Diasorin). Result: Forty-two percent of the cases were found to have vitamin D deficiency and 14% were found to have vitamin D insufficiency, whereas 20% of the controls had vitamin D deficiency and 24% had vitamin D insufficiency (P =0.0375). There was a significant association of 25(OH)D levels with extent of sun exposure, sunscreen use, and vegetarian diet. There was no association of 25(OH)D levels with multivitamin supplementation or dietary calcium intake. Conclusion: Vitamin D deficiency was less in our study group as compared with that reported in other Indian studies. Sun exposure, sunscreen use, and vegetarian diet are important modifiable variables significantly associated with vitamin D status in pregnancy.
    Keywords Vitamin D status ; pregnancy ; sun exposure ; dietary calcium ; Diseases of the endocrine glands. Clinical endocrinology ; RC648-665 ; Specialties of internal medicine ; RC581-951 ; Internal medicine ; RC31-1245 ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2012-01-01T00:00:00Z
    Publisher Endocrine Society of India
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Intimate partner violence and condom versus other modern contraception use among married women in rural India

    A. Dasgupta / N. Saggurti / B. Donta / M. Battala / M. Ghule / S. Nair / J. Ritter / J. Silverman / A. Raj

    Annals of Global Health, Vol 81, Iss 1, Pp 218-

    2015  Volume 219

    Keywords Infectious and parasitic diseases ; RC109-216 ; Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2015-03-01T00:00:00Z
    Publisher Ubiquity Press
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Equatorial scintillations in relation to the development of ionization anomaly

    S. Ray / A. Paul / A. DasGupta

    Annales Geophysicae, Vol 24, Iss 5, Pp 1429-

    2006  Volume 1442

    Abstract: The irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals. Development of a ... ...

    Abstract The irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals. Development of a specification and forecast system for scintillations is needed in view of the increased reliance on space-based communication and navigation systems, which are vulnerable to ionospheric scintillations. It has been suggested in recent years that a developed equatorial anomaly in the afternoon hours, with a steep gradient of the F-region ionization or Total Electron Content (TEC) in the region between the crest and the trough, may be taken as a precursor to scintillations on transionospheric links. Latitudinal gradient of TEC measured using Faraday Rotation technique from LEO NOAA 12/14 transmissions during the afternoon hours at Calcutta shows a highly significant association with L-band scintillations recorded on the INMARSAT link, also from Calcutta, during the equinoxes, August through October 2000, and February through April 2001. The daytime equatorial electrojet is believed to control the development of the equatorial anomaly and plays a crucial role in the subsequent development of F-region irregularities in the post-sunset hours. The diurnal maximum and integrated value (integrated from the time of onset of plasma influx to off-equatorial latitudes till local sunset) of the strength of the electrojet in the Indian longitude sector shows a significant association with post-sunset L-band scintillations recorded at Calcutta during the two equinoxes mentioned earlier. Generation of equatorial irregularities over the magnetic equator in the post-sunset hours is intimately related to the variation of the height of the F-layer around sunset. Ionosonde data from Kodaikanal, a station situated close to the magnetic equator, has been utilized to calculate the vertical drift of the F-layer over the magnetic equator for the period August through October 2000. The post-sunset F-region height rise over the magnetic equator shows a remarkable correspondence with the occurrence of scintillations at Calcutta located near the northern crest of the equatorial anomaly. Existence of a flat-topped ionization distribution over the magnetic equator around sunset has been suggested as a possible indication of occurrence of post-sunset scintillations. Width of the latitudinal distribution of ionization obtained from DMSP satellite shows some correspondence with post-sunset L-band scintillations. During the period of observation of the present study (August through October 2000, and February through April 2001), it has been observed that although the probability of occurrence of scintillations is high on days with flat-topped ion density variation over the equator, there are cases when no scintillations were observed even when a pronounced flat top variation was recorded.
    Keywords Science ; Q ; Physics ; QC1-999 ; Geophysics. Cosmic physics ; QC801-809
    Subject code 551
    Language English
    Publishing date 2006-07-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Equatorial scintillations in relation to the development of ionization anomaly

    S. Ray / A. Paul / A. DasGupta

    Annales Geophysicae, Vol 24, Pp 1429-

    2006  Volume 1442

    Abstract: The irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals. Development of a ... ...

    Abstract The irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals. Development of a specification and forecast system for scintillations is needed in view of the increased reliance on space-based communication and navigation systems, which are vulnerable to ionospheric scintillations. It has been suggested in recent years that a developed equatorial anomaly in the afternoon hours, with a steep gradient of the F-region ionization or Total Electron Content (TEC) in the region between the crest and the trough, may be taken as a precursor to scintillations on transionospheric links. Latitudinal gradient of TEC measured using Faraday Rotation technique from LEO NOAA12/14 transmissions during the afternoon hours at Calcutta shows a highly significant association with L-band scintillations recorded on the INMARSAT link, also from Calcutta, during the equinoxes, August through October 2000, and February through April 2001. The daytime equatorial electrojet is believed to control the development of the equatorial anomaly and plays a crucial role in the subsequent development of F-region irregularities in the post-sunset hours. The diurnal maximum and integrated value (integrated from the time of onset of plasma influx to off-equatorial latitudes till local sunset) of the strength of the electrojet in the Indian longitude sector shows a significant association with post-sunset L-band scintillations recorded at Calcutta during the two equinoxes mentioned earlier. Generation of equatorial irregularities over the magnetic equator in the post-sunset hours is intimately related to the variation of the height of the F-layer around sunset. Ionosonde data from Kodaikanal, a station situated close to the magnetic equator, has been utilized to calculate the vertical drift of the F-layer over the magnetic equator for the period August through October2000. The post-sunset ...
    Keywords Science ; Q ; Physics ; QC1-999 ; Geophysics. Cosmic physics ; QC801-809
    Subject code 551
    Language English
    Publishing date 2006-07-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Response of the equatorial ionosphere to the total solar eclipse of 22 July 2009 and annular eclipse of 15 January 2010 as observed from a network of stations situated in the Indian longitude sector

    A. Paul / T. Das / S. Ray / A. Das / D. Bhowmick / A. DasGupta

    Annales Geophysicae, Vol 29, Pp 1955-

    2011  Volume 1965

    Abstract: Dual-frequency GPS TEC monitors have been used to study the response of the ionosphere to the solar eclipses of 22 July 2009 and 15 January 2010. The receivers were located at three stations, Calcutta, Kharagpur and Baharampore which are situated outside ...

    Abstract Dual-frequency GPS TEC monitors have been used to study the response of the ionosphere to the solar eclipses of 22 July 2009 and 15 January 2010. The receivers were located at three stations, Calcutta, Kharagpur and Baharampore which are situated outside the umbra zone in the Indian longitude sector with each baseline being ~200 km. Effects of obscuration of the solar disc were noted in the ambient TEC recorded at the three stations. A series of depletions in TEC along the track of a GPS satellite and associated wave-like structures were identified on some GPS links during both the eclipses.
    Keywords Science ; Q ; Physics ; QC1-999 ; Geophysics. Cosmic physics ; QC801-809
    Language English
    Publishing date 2011-10-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Quinary prevention in diabetes care

    D. Dutta / V. Arora / A. Dhingra / A.K. Das / Md Fariduddin / K. Shaikh / G. Priya / P. Shah / A.A. Rehim / M. John / S. Shaikh / A. Orabi / M.R. Saraswati / S. Selim / M.P. Baruah / K.K. Gangopadhyay / Y.A. Langi / T. Nair / D. Dhanwal /
    S.D. Thapa / V. Deshmukh / H. Khalfan / R. Maskey / S. Das / A. Dasgupta / A. Bajaj / N. Pandey / A. AlAni / M. Moosa / S. Kalra

    Clinical Epidemiology and Global Health, Vol 11, Iss , Pp 100757- (2021)

    Need for multidisciplinary approach

    2021  

    Abstract: Problem considered: Type 2 diabetes mellitus (T2DM) is a global pandemic with increasing prevalence worldwide. Hearsay, or reported speech, is an important contributor to diabetes care related behavior and may influence the outcomes of diabetes treatment. ...

    Abstract Problem considered: Type 2 diabetes mellitus (T2DM) is a global pandemic with increasing prevalence worldwide. Hearsay, or reported speech, is an important contributor to diabetes care related behavior and may influence the outcomes of diabetes treatment. An emerging concept in preventive medicine is Quinary prevention which aims at preventing health-related hearsay or misinformation. Methods: A group of international clinical experts comprising endocrinologists, diabetologists, cardiologists and community medicine specialists gathered in India and discussed ways to restrain the menace of de-hearsay in diabetes care. Results: Based on the discussion, the expert panel endorsed the term ‘quinary prevention,’ which is a mode of preventing the spread of false health information. The panel also outlined several means through which the physician community can prevent the spread of misinformation. Conclusions: Considering the increasing use of technology by the general population, treating health care professionals should keep updating with the newer research evidences in their fields and disseminate authentic knowledge on diabetes care on social media, print media as well as other mass media, thereby diabetes promoting self-management, as well as public health.
    Keywords Type 2 diabetes mellitus ; Quinary prevention ; de-hearsay ; e-hearsay ; Misinformation ; Public aspects of medicine ; RA1-1270
    Subject code 360
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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