CARE1, a TY3-gypsy long terminal repeat retrotransposon in the food legume chickpea (Cicer arietinum L)

We report a novel Ty3-gypsy long terminal repeat retrotransposon CARE1 (_Cicer arietinum_ retro-element 1) in chickpea. This 5920-bp AT-rich (63%) element carries 723-bp 5' and 897-bp 3' LTRs respectively flanking an internal region of 4300-bp. The LTRs of CARE1 show 93.9% nucleotide identity to each other and have 4-bp (ACTA) terminal inverted repeats. A 17-bp potential tRNAmet primer binding site downstream to 5' LTR and a 13-bp polypurine tract upstream to 3' LTR have been identified. The order of domains (Gag-proteinase-reverse transcriptase-RNaseH-integrase) in the deduced amino acid sequence and phylogenetic tree constructed using reverse transcriptase sequences places CARE1 in the gypsy group of retrotransposons. Homologues of a number of _cis_-elements including CCAAT, TATA and GT-1 have been detected in the regulatory region or the 5' LTR of CARE1. Transgenic tobacco plants containing 5' LTR:GUS construct show that its 5'-LTR is inactive in a heterologous system under normal as well as tissue culture conditions. Genomic Southern blot experiments using 5’LTR of the element as a probe show that CARE1 or its related elements are present in the genomes of various chickpea accessions from various geographic regions

Lattice dynamics of II-VI materials using the adiabatic bond-charge model

We extend the adiabatic bond-charge model, originally developed for group IV semiconductors and III-V compounds, to study phonons in more ionic II-VI compounds with a zinc-blende structure. Phonon spectra, density of states, and specific heats are calculated for six II-VI compounds and compared with both experimental data and the results of other models. We show that the six-parameter bond-charge model gives a good description of the lattice dynamics of these materials. We also discuss trends in the parameters with respect to the ionicity and metallicity of these compounds. © 1996 The American Physical Society

Quaternion Gravi-Electromagnetism

Defining the generalized charge, potential, current and generalized fields as complex quantities where real and imaginary parts represent gravitation and electromagnetism respectively, corresponding field equation, equation of motion and other quantum equations are derived in manifestly covariant manner. It has been shown that the field equations are invariant under Lorentz as well as duality transformations. It has been shown that the quaternionic formulation presented here remains invariant under quaternion transformations.Comment: Key Words: Quaternion, dyons, gravito-dyons, gravi-electromagnetism. PACS No.: 04.90. +e ; 14.80. H

Unified Angular Momentum of Dyons

Unified quaternionic angular momentum for the fields of dyons and gravito-dyons has been developed and the commutation relations for dynamical variables are obtained in compact and consistent manner. Demonstrating the quaternion forms of unified fields of dyons (electromagnetic fields) and gravito-dyons (gravito-Heavisidian fields of linear gravity), corresponding quantum equations are reformulated in compact, simpler and manifestly covariant way

Study of impact of COVID-19 infection on ectopic pregnancy in a tertiary care center

Background: COVID-19 is an infectious disease caused by a recently discovered coronavirus (SARS-CoV-2). Most of the people infected with the coronavirus experience mild to moderate respiratory illness and recover without requiring any special treatment. In current study we have studied impact of COVID-19 pandemic on clinical outcome and management of ectopic pregnancy.Methods: Women with confirmed or suspected ectopic pregnancy admitted in emergency for further management and tested via nasopharyngeal (NP) or oropharyngeal swab for SARS-CoV-2 using reverse transcriptase polymerase chain reaction (RT-PCR) from April 1, 2020 to November 30, 2020 were included in the study.Results: In our study out of 32 case of ectopic pregnancy, 3 patients were COVID-19 positive. Total non COVID-19 patients were 29. Out of 32 ectopic pregnancies only 4 were unruptured ectopic pregnancy and rest 28 had ruptured ectopic pregnancy. Mortality among ectopic pregnancy was noted only in 1 case (3.12%).Conclusions: Timely diagnosis and initiating management at first point of care can reduce the morbidity and mortality due to ectopic pregnancy. Patient’s knowledge attitude and awareness will be achieved through health education. Women with clinical signs and physical symptoms of a ruptured ectopic pregnancy, such as hemodynamic instability or an acute abdomen, should be evaluated and treated urgently. In pandemic situation where some part of hospital facilities devoted to COVID-19 patients, so planned distribution of resources to tackle medical emergency will bear fruitful positive outcome