Studies on Longshore Sediment Transport Along Coast of Nagapattinam, India

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Model Study of River Cooum in Chennai, India

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Teacher Effectiveness and Digital Competence of High School Teachers in Shopian District, Jammu and Kashmir

Effectiveness of teaching is essential condition, to make learning more meaningful, clear and fruitful to a student. Through the present study an attempt has been made by the investigator to study the Teaching Effectiveness and digital competence of High School Teachers in the Shopian District of Jammu and Kashmir. Two scales were adopted and applied in the study namely (i) Teacher Effectiveness Scale (KTES) developed by the investigator (2021) and (ii) the Digital Competence scale developed by Ramakrishna (2017) for collection of the required data. The sample for the study was 330 (190 Male and 140 Female) High school teachers including contractual teachers. Stratified random sampling technique is used in this study. To make the statistical analysis descriptive method has been used by the investigator in the present study. The study reveals that Teacher Effectiveness of female teachers was found to be significantly higher as compared to the male teachers. Also, Teachers having higher levels of Digital Competence were found to be more effective than those having low levels of Digital Competence

Rhizopine biosensors for plant-dependent control of bacterial gene expression

Engineering signalling between plants and microbes could be exploited to establish host-specificity between plant-growth-promoting bacteria and target crops in the environment. We previously engineered rhizopine-signalling circuitry facilitating exclusive signalling between rhizopine-producing (RhiP) plants and model bacterial strains. Here, we conduct an in-depth analysis of rhizopine-inducible expression in bacteria. We characterize two rhizopine-inducible promoters and explore the bacterial host-range of rhizopine biosensor plasmids. By tuning the expression of rhizopine uptake genes, we also construct a new biosensor plasmid pSIR05 that has minimal impact on host cell growth in vitro and exhibits markedly improved stability of expression in situ on RhiP barley roots compared to the previously described biosensor plasmid pSIR02. We demonstrate that a sub-population of Azorhizobium caulinodans cells carrying pSIR05 can sense rhizopine and activate gene expression when colonizing RhiP barley roots. However, these bacteria were mildly defective for colonization of RhiP barley roots compared to the wild-type parent strain. This work provides advancement towards establishing more robust plant-dependent control of bacterial gene expression and highlights the key challenges remaining to achieve this goal

Realisation of CdS/Mn3O4nanocomposites for potential Photocatalytic Applications

The present work reports the realisation of high-quality crystalline CdS/Mn3O4(CM) nanocomposites by a simple cost-effective chemical method in air atmosphere. The authors have performed theoretical calculations and experimental analysis in order to understand the synthesised nanocomposites. X-ray diffraction results showed that the CM nanocomposites were cubic and orthorhombic mixed structure which is in good agreement with the theoretical studies. Field emission scanning electron microscopy images of CM confirmed the formation of well distributed nanocomposites. The outcomes of DFT calculations provide results for the bandgap calculation of pure CdS, Mn3O4and the CM nanocomposites. Photoluminescence studies with interesting visible light absorption demonstrated the great potentiality of the as-synthesised nanocomposites towards photocatalytic applications that could be a detailed research scope for the authors' future studies. © 2020 Institution of Engineering and Technology. All rights reserved.Acknowledgments: The author P. Joice Sophia kindly acknowledges DST-INSPIRE Faculty Scheme (DST/INSPIRE/04/2016/ 000292) and SERB-EMR (EMR/2017/004764) for the financial support and funding. One of the authors, M. Rajesh Kumar thanks the contract no. 40/is2

Iron Behaving Badly: Inappropriate Iron Chelation as a Major Contributor to the Aetiology of Vascular and Other Progressive Inflammatory and Degenerative Diseases

The production of peroxide and superoxide is an inevitable consequence of aerobic metabolism, and while these particular "reactive oxygen species" (ROSs) can exhibit a number of biological effects, they are not of themselves excessively reactive and thus they are not especially damaging at physiological concentrations. However, their reactions with poorly liganded iron species can lead to the catalytic production of the very reactive and dangerous hydroxyl radical, which is exceptionally damaging, and a major cause of chronic inflammation. We review the considerable and wide-ranging evidence for the involvement of this combination of (su)peroxide and poorly liganded iron in a large number of physiological and indeed pathological processes and inflammatory disorders, especially those involving the progressive degradation of cellular and organismal performance. These diseases share a great many similarities and thus might be considered to have a common cause (i.e. iron-catalysed free radical and especially hydroxyl radical generation). The studies reviewed include those focused on a series of cardiovascular, metabolic and neurological diseases, where iron can be found at the sites of plaques and lesions, as well as studies showing the significance of iron to aging and longevity. The effective chelation of iron by natural or synthetic ligands is thus of major physiological (and potentially therapeutic) importance. As systems properties, we need to recognise that physiological observables have multiple molecular causes, and studying them in isolation leads to inconsistent patterns of apparent causality when it is the simultaneous combination of multiple factors that is responsible. This explains, for instance, the decidedly mixed effects of antioxidants that have been observed, etc...Comment: 159 pages, including 9 Figs and 2184 reference

Renal lesions in rhabdomyolysis caused by Pseudechis australis snake myotoxin

Kidney International5161956-1969KDYI

Establishment of an animal model for myoglobinuria by use of a myotoxin from Pseudechis australis (king brown snake) venom in mice

Laboratory Animal Science464393-398LBAS