માધ્યમિક શાળાના શિક્ષકોના મૂલ્યો, સિદ્ધિપ્રેરણા અને શીખવવા પ્રત્યેના વલણનો અભ્યાસ

“ઈન્ડિયા-૨૦૨૦ નવી સહસ્ત્રાબ્દીનું સ્વપ્ન”માં ડૉ. એ. પી. જે. અબ્દુલ કલામ લખે છે કે “કોઈપણ હેસિયતમાં પણ તમે જો શિક્ષક છો તો તમારે એક વિશેષ ભૂમિકા ભજવવાની છે પણ બીજી કોઈપણ વ્યક્તિ કરતાં વધુ તમે પેઢીઓને આકાર આપી રહ્યા છો. આ દેશમાં એક જમાનો હતો જ્યારે શિક્ષકોનો ગુરુઓ તરીકે આદર થતો. આજે જોકે, શિક્ષકને ખૂણામાં ફેંકી દેવામાં આવ્યા છે. ઘણા શિક્ષકો અત્યંત કંગાળ પરિસ્થિતિઓમાં કામ કરે છે. તેમની પ્રશ્ર્નો ઉકેલવાની જરૂર અંગે અમે વાકેફ છીએ. છતાંય અમે શિક્ષકોને કામ કરવાની વિનંતી કરીએ છીએ.” ડૉ. કલામનાં સ્વપ્નનું ભારત નિર્માણ કરવામાં શિક્ષકો ખૂબ જ મહત્ત્વની ભૂમિકા ભજવી રહ્યા છે. સમાજ અને રાષ્ટ્રના ભાવિ નાગરિકોનો મહત્ત્વનો વિકાસ શાળાઓમાં થાય છે. મનોવૈજ્ઞાનિકોનો મતે બાળકના તરુણાવસ્થાના શરૂઆતના વર્ષો તેના વિકાસ માટે ખૂબ જ અગત્યના છે અને આ બાળવિકાસના શ્રેષ્ઠ તબક્કામાં શિક્ષક વિવિધ પ્રકારની ભૂમિકા ભજવે છે. પ્રવર્તમાન શિક્ષણમાં આજે સંપૂર્ણ ગુણવત્તા વ્યવસ્થાપન (TQM)નો વિચાર રાષ્ટ્ર કક્ષાએ અમલમાં મૂકાય રહ્યો છે. તેના જ ભાગ રૂપે હાલ વર્ષ ૨૦૦૨થી ગુજરાત સરકાર દ્વારા કર્મયોગી યોજના હેઠળ શિક્ષણ સાથે સંકળાયેલાં તમામ લોકોને ગુણવત્તા-સભર તાલીમ અપાઈ રહી છે. સંશોધકને આ તાલીમ યોજના અંતર્ગત રાજય કક્ષાના તજજ્ઞ તરીકે કામગીરી કરવાનો અવસર પ્રાપ્ત થયો હતો. આ તાલીમ દરમ્યાન દિવસો સુધી શિક્ષકો સાથે આંતર પ્રક્રિયા, જૂથ ચર્ચા અને વિચાર વિનિમય દ્વારા એવી અનુભૂતિ થઈ કે શિક્ષકોના વિવિધ મૂલ્યો, સિધ્ધિપ્રેરણા અને તેમને શીખવવા પ્રત્યેના વલણનું સ્તર જાણી શિક્ષણમાં સંપૂર્ણ ગુણવત્તા સુધારણા અભિયાનના આ મહાયજ્ઞમાં કેવી રીતે ઉપયોગી થઈ શકાય ? તેવા વિચારબીજ સંશોધકને સતત ઢંઢોળતા હતાં તેનાં પરિપાકરૂપે પ્રસ્તુત સમસ્યાનો ઉદ્ભવ થયો હતો. અંતે દેવત્ત્વને પોષવાના ઉમદા ક્ષેત્રમાં કાર્ય કરી રહેલાં આ શિક્ષક સમાજ માટે કંઈક શ્રેષ્ઠ કરી છુટવાના પ્રયાસમાંથી એક શિક્ષક કેમ અલિપ્ત રહી શકે

Sustainable Approaches for Recycling Solar Panel Materials: A Circular Economy Perspective

A record number of photovoltaic (PV) systems have been installed around the globe as a result of the shift towards renewable energy sources, especially solar electricity. But the problem of how to sustainably handle solar panels at the end of their lifecycle will inevitably arise with this increase. Using empirical data to provide light on important trends and consequences, this paper explores sustainable alternatives of recycling solar panel materials within the framework of a circular economy. The majority of solar panels are made of silicon, which accounts for 60% of their composition. Aluminum makes up 10%, glass is 20%, copper is 5%, plastic is 3%, and other materials make up 2%. The need for efficient waste management solutions became acute as yearly garbage output climbed from 1,000 tons to 1,250 tons during a five-year period. As far as recycling efficiency rates go, silicon was at 95%, then copper at 85%, glass at 90%, aluminum at 80%, plastics at 70%, and other materials at 60%. Plastics produced 700 tons, silicon 950 tons, aluminum 800 tons, copper 850 tons, glass 900 tons, and other materials 600 tons, all thanks to recycling efforts that overcame obstacles. Based on these results, it's clear that the solar energy industry needs more efficient use of resources and better recycling procedures. Solar energy may be ensured to remain a clean and sustainable source of energy for the long term by using technical advancements, regulatory assistance, and stakeholder engagement to speed the transition towards a circular economy model for solar panel materials

Neurodevelopmental disorders in children aged 2-9 years: Population-based burden estimates across five regions in India.

BACKGROUND: Neurodevelopmental disorders (NDDs) compromise the development and attainment of full social and economic potential at individual, family, community, and country levels. Paucity of data on NDDs slows down policy and programmatic action in most developing countries despite perceived high burden. METHODS AND FINDINGS: We assessed 3,964 children (with almost equal number of boys and girls distributed in 2-<6 and 6-9 year age categories) identified from five geographically diverse populations in India using cluster sampling technique (probability proportionate to population size). These were from the North-Central, i.e., Palwal (N = 998; all rural, 16.4% non-Hindu, 25.3% from scheduled caste/tribe [SC-ST] [these are considered underserved communities who are eligible for affirmative action]); North, i.e., Kangra (N = 997; 91.6% rural, 3.7% non-Hindu, 25.3% SC-ST); East, i.e., Dhenkanal (N = 981; 89.8% rural, 1.2% non-Hindu, 38.0% SC-ST); South, i.e., Hyderabad (N = 495; all urban, 25.7% non-Hindu, 27.3% SC-ST) and West, i.e., North Goa (N = 493; 68.0% rural, 11.4% non-Hindu, 18.5% SC-ST). All children were assessed for vision impairment (VI), epilepsy (Epi), neuromotor impairments including cerebral palsy (NMI-CP), hearing impairment (HI), speech and language disorders, autism spectrum disorders (ASDs), and intellectual disability (ID). Furthermore, 6-9-year-old children were also assessed for attention deficit hyperactivity disorder (ADHD) and learning disorders (LDs). We standardized sample characteristics as per Census of India 2011 to arrive at district level and all-sites-pooled estimates. Site-specific prevalence of any of seven NDDs in 2-<6 year olds ranged from 2.9% (95% CI 1.6-5.5) to 18.7% (95% CI 14.7-23.6), and for any of nine NDDs in the 6-9-year-old children, from 6.5% (95% CI 4.6-9.1) to 18.5% (95% CI 15.3-22.3). Two or more NDDs were present in 0.4% (95% CI 0.1-1.7) to 4.3% (95% CI 2.2-8.2) in the younger age category and 0.7% (95% CI 0.2-2.0) to 5.3% (95% CI 3.3-8.2) in the older age category. All-site-pooled estimates for NDDs were 9.2% (95% CI 7.5-11.2) and 13.6% (95% CI 11.3-16.2) in children of 2-<6 and 6-9 year age categories, respectively, without significant difference according to gender, rural/urban residence, or religion; almost one-fifth of these children had more than one NDD. The pooled estimates for prevalence increased by up to three percentage points when these were adjusted for national rates of stunting or low birth weight (LBW). HI, ID, speech and language disorders, Epi, and LDs were the common NDDs across sites. Upon risk modelling, noninstitutional delivery, history of perinatal asphyxia, neonatal illness, postnatal neurological/brain infections, stunting, LBW/prematurity, and older age category (6-9 year) were significantly associated with NDDs. The study sample was underrepresentative of stunting and LBW and had a 15.6% refusal. These factors could be contributing to underestimation of the true NDD burden in our population. CONCLUSIONS: The study identifies NDDs in children aged 2-9 years as a significant public health burden for India. HI was higher than and ASD prevalence comparable to the published global literature. Most risk factors of NDDs were modifiable and amenable to public health interventions

Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples

Funder: NCI U24CA211006Abstract: The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts

Engineered polyallylamine nanoparticles for efficient in vitro transfection

Purpose: Cationic polymers (i.e. polyallylamine, poly-L-lysine) having primary amino groups are poor transfection agents and possess high cytotoxicity index when used without any chemical modification and usually entail specific receptor mediated endocytosis or lysosomotropic agents to execute efficient gene delivery. In this report, primary amino groups of polyallylamine (PAA, 17 kDa) were substituted with imidazolyl functions, which are presumed to enhance endosomal release, and thus enhance its gene delivery efficiency and eliminate the requirement of external lysosomotropic agents. Further, systems were cross-linked with polyethylene glycol (PEG) to prepare PAA-IAA-PEG (PIP) nanoparticles and evaluated them in various model cell lines. Materials and Methods: The efficacy of PIP nanoparticles in delivering a plasmid encoding enhanced green fluorescent protein (EGFP) gene was assessed in COS-1, N2a and HEK293 cell lines, while their cytotoxicity was investigated in COS-1 and HEK293 cell lines. The PAA was chemically modified using imidazolyl moieties and ionically cross-linked with PEG to engineer nanoparticles. The extent of substitution was determined by ninhydrin method. The PIP nanoparticles were further characterized by measuring the particle size (dynamic light scattering and transmission electron microscopy), surface charge (zeta potential), DNA accessibility and buffering capacity. The cytotoxicity was examined using the MTT method. Results: In vitro transfection efficiency of synthesized nanoparticles is increased up to several folds compared to native polymer even in the presence of serum, while maintaining the cell viability over 100% in COS-1 cells. Nanoparticles possess positive zeta potential between 5.6-13 mV and size range of 185-230 nm in water. The accessibility experiment demonstrated that nanoparticles with higher degree of imidazolyl substitution formed relatively loose complexes with DNA. An acid-base titration showed enhanced buffering capacity of modified PAA. Conclusions: The PIP nanoparticles reveal tremendous potential as novel delivery system for achieving improved transfection efficiency, while keeping the cells at ease

Development of Decadal (1985–1995–2005) Land Use and Land Cover Database for India

India has experienced significant Land-Use and Land-Cover Change (LULCC) over the past few decades. In this context, careful observation and mapping of LULCC using satellite data of high to medium spatial resolution is crucial for understanding the long-term usage patterns of natural resources and facilitating sustainable management to plan, monitor and evaluate development. The present study utilizes the satellite images to generate national level LULC maps at decadal intervals for 1985, 1995 and 2005 using onscreen visual interpretation techniques with minimum mapping unit of 2.5 hectares. These maps follow the classification scheme of the International Geosphere Biosphere Programme (IGBP) to ensure compatibility with other global/regional LULC datasets for comparison and integration. Our LULC maps with more than 90% overall accuracy highlight the changes prominent at regional level, i.e., loss of forest cover in central and northeast India, increase of cropland area in Western India, growth of peri-urban area, and relative increase in plantations. We also found spatial correlation between the cropping area and precipitation, which in turn confirms the monsoon dependent agriculture system in the country. On comparison with the existing global LULC products (GlobCover and MODIS), it can be concluded that our dataset has captured the maximum cumulative patch diversity frequency indicating the detailed representation that can be attributed to the on-screen visual interpretation technique. Comparisons with global LULC products (GlobCover and MODIS) show that our dataset captures maximum landscape diversity, which is partly attributable to the on-screen visual interpretation techniques. We advocate the utility of this database for national and regional studies on land dynamics and climate change research. The database would be updated to 2015 as a continuing effort of this study

Multicenter Case–Control Study of COVID-19–Associated Mucormycosis Outbreak, India

We performed a case–control study across 25 hospitals in India for the period of January–June 2021 to evaluate the reasons for an COVID-19–associated mucormycosis (CAM) outbreak. We investigated whether COVID-19 treatment practices (glucocorticoids, zinc, tocilizumab, and others) were associated with CAM. We included 1,733 cases of CAM and 3,911 age-matched COVID-19 controls. We found cumulative glucocorticoid dose (odds ratio [OR] 1.006, 95% CI 1.004–1.007) and zinc supplementation (OR 2.76, 95% CI 2.24–3.40), along with elevated C-reactive protein (OR 1.004, 95% CI 1.002–1.006), host factors (renal transplantation [OR 7.58, 95% CI 3.31–17.40], diabetes mellitus [OR 6.72, 95% CI 5.45–8.28], diabetic ketoacidosis during COVID-19 [OR 4.41, 95% CI 2.03–9.60]), and rural residence (OR 2.88, 95% CI 2.12–3.79), significantly associated with CAM. Mortality rate at 12 weeks was 32.2% (473/1,471). We emphasize the judicious use of COVID-19 therapies and optimal glycemic control to prevent CAM