Dinoflagellate cyst biostratigraphy of the Patasar Shale Member (Upper Jurassic) of the Wagad Uplift, Kachchh, Gujarat, western India

Two samples were analysed from the lowermost Patasar Shale Member of the Patasar Tank section on the western margin of the Wagad Uplift in the Kachchh Basin of Gujarat, western India. One of the samples produced an abundant, diverse and well-preserved palynobiota. The other sample produced a significantly sparser association, but of similar character. The overall assemblage is dominated by relatively long-ranging Jurassic gymnospermous pollen grains, but also includes dinoflagellate cysts of definite Gondwanan affinity. The dinoflagellate cysts are confidently correlated to the Australian Dingodinium swanense Interval Zone, which is of Kimmeridgian (Late Jurassic) age. This indicates that the Australasian Jurassic dinoflagellate cyst biostratigraphical scheme can be applied in western India, and probably throughout the Indian subcontinent. Due to evidence from ammonites and calcareous nannofossils in the Patasar Shale Member, allied with other biostratigraphical evidence from New Zealand and Papua New Guinea, the age of the D. swanense Interval Zone is reinterpreted as being of Early Kimmeridgian age. The D. swanense Interval Zone was previously assigned to the Early to Late Kimmeridgian. Its refinement and revision to an older age are entirely consistent with recent reassessments of these dinoflagellate cyst biozones

Observation of a Low-viscosity Interface Between Immiscible Polymer Layers

この論文は国立情報学研究所の電子図書館事業により電子化されました。研究会報告X-ray Photon Correlation Spectroscopy (XPCS) was employed in a surface standing wave geometry in order to resolve the thermally diffusive in-plane dynamics at both the surface/vacuum (top) and polymer/polymer (bottom) interfaces of a thin Polystyrene (PS) film on top of Poly (4-bromo styrene) (PBrS) and supported on a Si substrate. The top vacuum interface shows two relaxation modes: one fast and one slow, while the buried polymerpolymer interface shows a single slow mode. The slow mode of the top interface is similar in magnitude and wavevector dependence to the single mode of the buried interface. The dynamics are consistent with a low-viscosity mixed layer between the PS and PBrS and coupling of the capillary wave fluctuations between this layer and the PS

TAVI for aortic regurgitation – India's first case with Corevalve Evolut R

Transcatheter Aortic Valve Implantation (TAVI) is a well-described treatment for symptomatic calcific severe aortic stenosis. However, TAVI technology is being increasingly used around the world to treat selected cases of severe aortic regurgitation (AR). One of the main limitations of using TAVI technology for AR is the lack of calcification, which is common in such cases. This makes anchoring of a TAVI prosthesis to the aortic annulus difficult and risks displacement or embolization. However, with the availability of recapturable and repositionable TAVI technologies, these limitations have been overcome to a large extent. This is the first Corevalve Evolut R device that was used in India and the first TAVI to treat AR in India

Patterns of Post Operative Wound Infection and their Antibiotic Sensitivity in Bir Hospital

Abstrac

A comparative study to assess the accuracy of the SRK T and HOFFER Q formulas in the intraocular lens calculation of long eyes undergoing phacoemulsification with posterior chamber intraocular lens in a tertiary care center

Aims and Objectives: The aim is to compare the accuracy of the SRK T and HOFFER Q formulas in intraocular lens (IOL) power calculation in long eyes by noting the postoperative visual outcome. Introduction: Senile cataract is a leading cause of blindness in India. Cataracts are managed by cataract extraction with implantation IOL. Before surgery, IOL power is calculated by biometry. IOL power calculation is the main key to obtaining a good refractive outcome after cataract surgery. Materials and Methods: A hospital-based study was conducted prospectively to evaluate IOL power using SRK T and HOFFER Q formulae in patients undergoing phacoemulsification with posterior chamber intraocular lens in long eyes over a period of 18 months. Thirty patients were studied based on inclusion criteria. A detailed clinical examination, pre- and postoperative visual acuity, anterior chamber depth (ACD), and refraction were done on day 30 postsurgery. Results: The study included 30 cases with 15 patients in either group, of which 63% were male and 37% were female; 95% of the patients were aged above 50 years; the maximum number of patients in either group had an axial length in the range of 24.5–25 mm; the maximum preoperative ACD was between 3 and 4.5 mm and the maximum postoperative ACD was between 4 and 4.5 mm in both groups; 40% of the patients in either group had 6/6 vision; spherical refractive error postoperative was seen in 73% in the SRK T group and 68% in the HOFFER Q group; and cylindrical refractive error was seen in 27% in SRK T group and 32% in HOFFER Q group. Conclusion: Either formula can be used for IOL power calculation in eyes up to 26.5 mm, as not much difference in postoperative refractive error was observed. Both formulas had a lesser degree of spherical error and an equally good visual outcome postoperatively. Careful biometry is important to prevent postoperative surprises

Not Available

Not AvailablePCR amplification of callipyge gene yielded an amplified product of 426 bp in Indian sheep breeds. RFLP study of callipyge gene with FaqI (BsmFI) restriction enzyme revealed presence of wild type allele A with only one genotype (AA) and absence of the mutant allele G which is responsible for callipyge phenotype and enhanced mutton quality. The results revealed that there is absence of polymorphism at this locus and callipyge mutation is not found in all the studied Indian sheep breeds and fat tailed dumba sheep.Not Availabl

Resonantly enhanced off-specular X-ray scattering from polymer/polymer interfaces

We have used measurements of the absolute intensity of diffuse X-ray scattering to extract the interfacial tension of a buried polymer/polymer interface. Diffuse scattering was excited by an X-ray standing wave whose phase was adjusted to have a high intensity at the polymer/polymer interface and simultaneously a node at the polymer/air interface. This method permits the capillary-wave-induced roughness of the interface, and hence the interfacial tension, to be measured independently of the polymer/polymer interdiffusion