Studies on gluon evolution and geometrical scaling in kinematic constrained unitarized BFKL equation: application to high-precision HERA DIS data

We suggest a modified form of a unitarized BFKL equation imposing the so-called kinematic constraint on the gluon evolution in multi-Regge kinematics. The underlying nonlinear effects on the gluon evolution are investigated by solving the unitarized BFKL equation analytically. We obtain an equation of the critical boundary between dilute and dense partonic system, following a new differential geometric approach and sketch a phenomenological insight on geometrical scaling. Later we illustrate the phenomenological implication of our solution for unintegrated gluon distribution $f(x,k_T^2)$ towards exploring high precision HERA DIS data by theoretical prediction of proton structure functions ($F_2$ and $F_L$) as well as double differential reduced cross section $(\sigma_r)$. The validity of our theory in the low $Q^2$ transition region is established by studying virtual photon-proton cross section in light of HERA data

A study of abnormal semen parameters in infertile couples in Assam, India

Background: The importance of male factor contribution to infertility is well recognised. Semen analysis is an indispensable diagnostic tool in the evaluation of the male partners of infertile couples.  Aim and objective of the study was conducted to determine the abnormalities in semen among male partners in infertile couples.Methods: Detailed history, examination and semen analysis was done. Semen samples were analysed for volume, viscosity, sperm concentration, motility, and morphology, according to WHO guidelines.Results: This study, done at a tertiary care center in north eastern India has demonstrated that abnormal semen quality is a major factor contributing to infertility in couples. Total number of participants were 94. Most of the male partners i.e. 65.96%, who came for infertility evaluation were between 30-39 years of age with 56.38% participants having abnormal semen parameters. The most common abnormality found was asthenozoospermia seen in 35.11% of cases followed by oligozoospermia seen in 25.53% of cases. Teratozoospermia and azoospermia were seen in 7.45% and 4.26% of cases respectively.Conclusions: Males contribute towards infertility in couples significantly. Abnormal semen pattern is a common cause. More research is needed to render more valuable and significant results regarding male infertility

WRKY Transcription Factors: Molecular Regulation and Stress Responses in Plants

Plants in their natural habitat have to face multiple stresses simultaneously. Evolutionary adaptation of developmental, physiological and biochemical parameters give advantage over a single window of stress but not multiple. On the other hand transcription factors like WRKY can regulate diverse responses through a complicated network of genes. So molecular orchestration of WRKYs in plant may provide the most anticipated outcome of simultaneous multiple responses. Activation or repression through W-box and W-box like sequences is regulated at transcriptional, translational and domain level. Because of the tight regulation involved in specific recognition and binding of WRKYs to downstream promoters, they have become promising candidate for crop improvement. Epigenetic, retrograde and proteasome mediated regulation enable WRKYs to attain the dynamic cellular homeostatic reprograming. Overexpression of several WRKYs face the paradox of having several beneficial affects but with some unwanted traits. These overexpression-associated undesirable phenotypes need to be identified and removed for proper growth, development and yeild. Taken together, we have highlighted the diverse regulation and multiple stress response of WRKYs in plants along with the future prospects in this field of research

A two years study of histopathological spectrum of skin adnexal tumors in a tertiary care centre of Southern Assam, India

Background: Skin adnexal tumors (SAT) encompass a wide spectrum of benign and malignant tumors that differentiate toward one or more adnexal structures found in normal skin. Overall incidence of SATs is low yet they can be challenging to diagnose. Our study aims at analysis of histopathological spectrum of various SATs according to age, sex and anatomic locations along with histopathological features.Methods: It was a retrospective cross-sectional study conducted over a period of 2 years from June 2017 to May 2019. All cases were retrieved from department registries and analyzed.Results: Out of the total 4013 biopsies, 25 cases were diagnosed as SATs comprising 44% of tumors with eccrine sweat gland differentiation followed by tumors showing hair follicle differentiation (32%), sebaceous differentiation (16%) and apocrine gland differentiation (8%). The age ranged from 4 years to 68 years and male: female ratio was 1:1.5. Most of the tumors were benign (84%) while only 16% were malignant. Pilomatricoma (19%) was the most common benign tumor while sebaceous carcinoma (75%) was the most common malignant tumor.Conclusions: Skin adnexal tumors are relatively rare neoplasm. Malignant cases are less common than benign ones. Histopathology is quite essential for diagnostic point of view