PALYNOLOGY EVIDENCES OF HITHERTO UNRECOGNISED JURASSIC SEDIMENTATION IN RAJMAHAL BASIN, INDIA

In Rajmahal Basin the Upper Gondwana (Mesozoic) sequences are represented by the Dubrajpur and Rajmahal Formations. Palynologically, the Dubrajpur Formation is shown to be a time transgressive unit spanning from Early Triassic to Early Cretaceous. Out of seven palynological assemblages recorded from this formation four have Early Jurassic to Early Cretaceous age. Arcuatipollenites tethyensis Assemblage Zone represents the Late Triassic to Early Jurassic time interval. Callialasporites turbatus Assemblage Zone registers presence of dinoflagellate taxon Phallocysta indicating Late Early to Early Middle Jurassic age. The Contignisporites cooksonii Assemblage Zone has Late Middle Jurassic age. The topmost Ruffordiaspora australiensis Assemblage Zone represents Late Jurassic - Early Cretaceous age. The palynological information from Rajmahal Basin evidently reveals presence of nonmarine Jurassic sediments on Indian peninsula, on the contrary to the old assumption of their absence

Pregnant patient presenting with headache and medulloblastoma and hydrocephalous: a case report

Medulloblastoma, a primitive neuroectodermal tumor (PNET), is a second most brain tumor in children, accounting for about 20% of cases but is very rare in adults, 1% of all cancers in adults with only one third of cases occur in women and even less in pregnant women. It is primarily a cerebellar tumor. Symptoms include nausea, vomiting, loss of coordination, morning headache, seizures and personality changes. Treatment is surgical removal of tumor followed by radiotherapy. A grand-multipara presented in casualty with 30 weeks pregnancy & complains of headache, visual disturbances & disorientation. MRI findings were suggestive of medulloblastoma with hydrocephalus. Ventriculo-peritoneal shunting was done followed by termination of pregnancy. She delivered vaginally a live female child. After 15 days, her definitive neurosurgery was done. The uniqueness of this case is its rarity and symptoms of which are often masked by symptoms of pregnancy as syncope during pregnancy could be due to hypoglycemia, anxiety, orthostatic hypotension or cardiac causes

RECURRENT PREGNANCY LOSS AND ASSOCIATION OF MTHFR, PAI-1 AND ACE GENE POLYMORPHISMS IN WOMEN

Recurrent pregnancy loss (RPL) is a significant clinical problem that may occur before the 20th week of gestation. There is no general consensus on how many consecutive abortions are considered as RPL. The goal of this study is to investigate the correlation between recurrent miscarriage (RM) and common polymorphisms in angiotensin-converting enzyme (ACE), plasminogen activator inhibitor 1 (PAI-1) and Methylenetetrahydrofolate Reductase (MTHFR) genes among women experiencing RM. The literature existing in different population was searched and based on these finding we conclude that polymorphism in either one of these genes may increase chances of miscarriage. KEYWORDS: Polymorphism; Recurrent pregnancy; Plasminogen activator inhibitor 1

RECURRENT PREGNANCY LOSS AND ASSOCIATION OF MTHFR, PAI-1 AND ACE GENE POLYMORPHISMS IN WOMEN

Recurrent pregnancy loss (RPL) is a significant clinical problem that may occur before the 20th week of gestation. There is no general consensus on how many consecutive abortions are considered as RPL. The goal of this study is to investigate the correlation between recurrent miscarriage (RM) and common polymorphisms in angiotensin-converting enzyme (ACE), plasminogen activator inhibitor 1 (PAI-1) and Methylenetetrahydrofolate Reductase (MTHFR) genes among women experiencing RM. The literature existing in different population was searched and based on these finding we conclude that polymorphism in either one of these genes may increase chances of miscarriage. KEYWORDS: Polymorphism; Recurrent pregnancy; Plasminogen activator inhibitor 1

Penetration depth and tunneling studies in very thin epitaxial NbN films

We investigate evolution of the magnetic penetration depth and superconducting energy gap in epitaxial NbN films using a low frequency mutual inductance technique and tunneling spectroscopy using a low temperature scanning tunneling microscope (STM). The superconducting transition temperature (Tc) for films grown under optimal growth conditions decreases monotonically from 15.87K to 9.16K as the film thickness is decreased from 50nm to 3nm. With decrease in film thickness delta(0) monotonically decreases, whereas lambda(0) monotonically increases. We observe that Tc, lambda(o) and delta(0) are well described by Bardeen-Cooper-Schrieffer (BCS) theory in all films other than the two thinnest ones where we see evidence of the Kosterlitz-Thouless-Berezinski (KTB) transition close to Tc.Comment: Modified version with extensive analysis of the KTB transition. One new author adde

Tunneling studies in a homogeneously disordered s-wave superconductor: NbN

We report the evolution of superconducting properties as a function of disorder in homogeneously disordered epitaxial NbN thin films grown on (100) MgO substrates, studied through a combination of electrical transport, Hall Effect and tunneling measurements. The thickness of all our films are >50nm much larger than the coherence length ~5nm. The effective disorder in different films encompasses a large range, with the Ioffe-Regel parameter varying in the range kFl~1.38-8.77. Tunneling measurements on films with different disorder reveals that for films with large disorder the bulk superconducting transition temperature (Tc) is not associated with a vanishing of the superconducting energy gap, but rather a large broadening of the superconducting density of states. Our results provide strong evidence of the loss of superconductivity via phase-fluctuations in a disordered s-wave superconductor.Comment: pdf file including figure

Temperature dependence of resistivity and Hall-coefficient in a strongly disordered metal: NbN

We report the temperature dependence of resistivity (rho) and Hall coefficient (R_H) in the normal state of homogeneously disordered epitaxial NbN thin films with kFl~3.27-10.12. The superconducting transition temperature (Tc) of these films varies from 8.13K to 16.8K. While our least disordered film displays usual metallic behavior, for all the films with kFl<8.13, both and are negative up to 300K. We observe that R_H(T) varies linearly with rho(T) for all the films. Measurements performed on a 2nm thick Be film shows similar behavior >. This behavior is inconsistent with existing theories of localization and e-e interactions in a disordered metal.Comment: pdf file with figure

Medium optimization for the production of lipstatin by Streptomyces toxytricini using full factorial design of experiment

Abstract: Full factorial design of experiment for medium optimization was employed for lipstatin production by Streptomyces toxytricini in shake flask study. The full factorial DOE was very much effective in screening of nutritional parameters within the stipulated time frame in a limited number of experiments. A maximum lipstatin production was achieved 3.290 g/l with the following optimized factors: soya flour 35g/l and soya oil 25g/l. Validation experiments were also carried out to verify the adequacy and the accuracy of the model. The results also give a scope for large scale fermentation of lipstatin production. [Luthra, U., Kumar, H., Kulshreshtha, N., Tripathi, A., Trivedi, A., Khadpekar, S., Chaturvedi, A. and Dubey, R.C. Medium optimization for the production of lipstatin by Streptomyces toxytricini using full factorial design of experiment. Nat Sci 2013;1