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Venkateswarlu, K.
- Marine Magnetic Anomalies as a Link Between the Granulite Belts of East Coast of India and Enderby Land of Antarctica
Authors
1 Regional Centre, National Institute of Oceanography, 176, Lawson's Bay Colony, Visakhapatnam-530017, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 49, No 2 (1997), Pagination: 153-158Abstract
Magnetic data of the eastern continental margin of India (ECMI) helped in demarcating the offshore extension of the granulite belts of east coast of India and their possible link to those of the East Antarctica. Short wavelength and high amplitude negative magnetic anomalies (200 to 1600 nT) are observed over the northern part of ECMI between Kakinada and Chilka lake and also off Madras shelf, the coastal regions of which are associated with granulite facies rocks . This part of the shelf is associated with structural lineaments with predominant NE-SW trends . In contrast, the offshore basins off Cauvery, Krishna - Godavari (K-G) and Mahanadi rivers are associated with subdued positive anomalies (less than 200 nT) indicating subsidence off these basins by heavy load of Phanerozoic/younger shelf sediments. Structural lineaments with NW-SE or W-E trends delineated over these basins are related to the offshore extension of these rift related Gondwana grabens. Similarity in the trends of the magnetic anomalies and the granulite facies on the east coast of India and their correlation with the granulite belt of Enderby Land of Antarctica supports the view that the entire region comprised of a single and stable block of granulite rocks prior to the fragmentation of the Gondwanaland. The study also suggests probable continuation of Mahanadi and Godavari grabens into East Antarctica.Keywords
Marine Geophysics, Magnetic Anomalies, Eastern Ghat Granulite Belt, Enderby Land , Antarctica.- Geochemistry of the Unusual Mafic Intrusions in Betul Fold Belt, Central India: Implications for Ni-Cu-Au-PGE Metallogeny
Authors
1 CSIR-National Geophysical Research Institute, Hyderabad 500 007, IN
2 Geomysore Services (India) Pvt Ltd, Bengaluru 560 037, IN
Source
Current Science, Vol 108, No 4 (2015), Pagination: 713-722Abstract
We report here the recent occurrence of native gold and platinoids, associated with Fe-Ni-Cu-Pb-Zn sulphides and tungsten-bearing phases in the gabbroic intrusions emplaced in the Betul-Chhindwara Belt in the Central Indian Tectonic Zone (CITZ). The ore minerals are represented mainly by native gold, pentlandite, chalcopyrite, pyrite, bowieite and rare phases of tungsten, cadmium and palladium, which were identified by scanning electron microscopy. The whole rock geochemistry shows anomalous Ni-Cu and platinum group elements (PGE) in which palladium is always higher in concentration than in platinum. The inter-element relationships of PGE such as Pd versus Ir and Pt versus Ir indicate their fractionation by a sulphide phase and also suggest that the parental magmas are primitive in nature having high-Mg, low- Ti characteristics, which indicate the boninitic/picritic nature of magmas. A thorough investigation is essential for exploring the Betul mafic-ultramafic intrusions for proving their potential as the host rocks for Au and Ni-Cu-PGE ores.Keywords
Gabbro Intrusions, Geochemistry, Citz, Native Gold, Platinum Group Elements.- Evaluation of Safety and Efficay of Nifedipine in Pregnancy Induced Hypertension:A Prospective Observational Study
Authors
1 Assistant Professor, Department of Pharmacy Practice, CMR College of Pharmacy, Hyderabad, IN
2 Associate Professor, Department of Pharmacy Practice, CMR College of Pharmacy, Hyderabad, IN
3 Pharm. D, Department of Pharmacy Practice, CMR College of Pharmacy, Hyderabad, IN
Source
Indian Journal of Public Health Research & Development, Vol 11, No 1 (2020), Pagination: 726-731Abstract
Introduction: Pregnancy induced hypertension (PIH) is a pregnancy specific, multisystem disorder characterized by development of edema, hypertension and proteinuria after 20 weeks of gestation. The group of diseases includes preeclampsia and eclampsia, which are peculiar to pregnancy. Antihypertensive treatment should be commenced in all women with a systolic blood pressure ≥170 mm Hg or a diastolic blood pressure ≥110 mm Hg because of the risk of intracerebral hemorrhage and eclampsia.
Aim: To evaluate the safety and efficacy of nifedipine in gestational hypertension.
Methodology: A Prospective observational study was conducted in outpatient and inpatient department of obstetrics and gynaecology of Government hospital for a period of one year (November 2017-November 2018). Inclusion criterion of the study was to collect and analyse the case sheets of patients having Gestational hypertension and Gestational age of >20 weeks admitted in the hospital and visited outpatient department during one year duration. Exclusion criterion of this study was patients having chronic hypertension, Gestational age of <20 weeks, Patients who were diagnosed with other causes of convulsions in pregnancy like cerebral malaria and epilepsy and Patients not willing to participate in the study.
Results and Discussion: In the present study, 70(68.62%) patients were treated with nifedipine and rest 32(31.37%) patients were treated with other antihypertensive. Nifedipine showed significantly better clinical outcomes in comparison to other anti hypertensive. Nifedipine safety profile in terms of adverse effects was significantly better than other anti hypertensive. IUGR had greater relative risk compared to other fetal outcomes while relative risk was significantly less for maternal outcomes in patients treated with nifedipine.
Conclusion: Our study results implicated the efficacy of nifedipine in pregnancy induced hypertension in terms of clinical outcomes, type of delivery, maternal outcomes and fetal outcomes and incidence of adverse effects.