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Rahul,Singh, Pramod K.,Singh, Rahul,Singh, Vijay,Tomar, S.K.,Bhattacharya, B.,Khan, Zishan H. Elsevier 2017 Materials research bulletin Vol.89 No.-
<P><B>Abstract</B></P> <P>A nanocrystalline sensitizer CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> is synthesized by reacting methylammonium iodide with lead iodide, and its structural and photovoltaic properties were studied. In this paper we have succeeded in achieving a promising way of synthesizing powder and crystals of CH<SUB>3</SUB>NH<SUB>3</SUB>I. The powder of CH<SUB>3</SUB>NH<SUB>3</SUB>I was synthesized by making a solution of methyl amine and hydroiodic acid (HI) while for getting the crystal of CH<SUB>3</SUB>NH<SUB>3</SUB>I the same procedure was followed with the treatment of ethanol and further CH<SUB>3</SUB>NH<SUB>3</SUB>I powder solution was left in refrigerator (48h). For synthesize perovskite solution of powder and crystal, the equimolar ratio of CH<SUB>3</SUB>NH<SUB>3</SUB>I and PbI<SUB>2</SUB> were mixed in gamma-butyrolactone (GBL) solution. The powder and crystal solution of CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> were further characterized using various experimental techniques such as x-ray diffraction pattern (XRD), UV⬜visible absorption spectroscopy, scanning electron microscope (SEM), transmission electron microscopy (TEM). A standard perovskite sensitized solar cell (PSSC) has been fabricated using CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> perovskite and polyethylene oxide (PEO) solid polymer electrolyte.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Clearcut comparative data of perovskite powder vs crystal. </LI> <LI> First clearcut evidence of beneficiality of crystals of pervoskite. </LI> <LI> Science behind PSSC datas are successfully presented. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P> <P>Shows the formation of CH<SUB>3</SUB>NH<SUB>3</SUB>PbI<SUB>3</SUB> (a) synthesised precipitate of methyl ammonium iodide (b) recrystallized perovskite (c) Solution of methyl ammonium tri-lead iodide.</P>
Rahul,Kulbhushan Haldeniya,Ashish Singh,Neha Bhatt,Prabhakar Mishra,Rajneesh Kumar Singh,Rajan Saxena 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.4
Backgrounds/Aims: Re-resection of incidental gallbladder carcinoma (IGBC) is possible in a select group of patients. However, the optimal timing for re-intervention lacks consensus. Methods: A retrospective analysis was performed for a prospective database of 91 patients with IGBC managed from 2009 to 2018. Patients were divided into three groups based on the duration between the index cholecystectomy and re-operation or final staging: Early (E), < 4 weeks; Intermediate (I), > 4 weeks and < 12 weeks; and Late (L), > 12 weeks. Demographic data, tumor characteristics, and operative details of patients were analyzed to determine factors affecting the re-resectability of IGBC. Results: Twenty-two patients in ‘E’, 48 in ‘I’, and 21 in ‘L’ groups were evenly matched. Nearly two thirds were asymptomatic. Curative resection was possible in 48 (52.7%) patients. Metastasis was detected during staging laparoscopy (SL)/laparotomy in 26 (28.6%) patients. The yield of SL was more in the ‘L’ group (30.8%) than in the ‘I’ (11.1%) or ‘E’ (nil) group, avoiding unnecessary laparotomy in 13.6%. Only 28.5% of patients in the ‘L’ group could undergo curative resection (R0/R1 resection), significantly less than that in the ‘E’ (50.0%) or ‘I’ group (64.6%) (both p < 0.001). On multivariate analysis, presentation in intermediate period and tumor differentiation increased the chance of curative resection (p < 0.05). Conclusions: Asymptomatic patients in the ‘I’ group with well differentiated IGBC have the best chance of obtaining a curative resection.
Swapnil Singh THAKUR(Swapnil Singh THAKUR ),Rahul Singh GAUTAM(Rahul Singh GAUTAM ),Ajay Kumar YADAV(Ajay Kumar YADAV ),Hitesh PATOLE(Hitesh PATOLE ),Aashi RAWAL(Aashi RAWAL ),Shailesh RASTOGI(Shailes 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.2
The goal of this study is to understand how financial inclusion (FI) as influenced by Internet subscribers in India, affects India’s Sustainable Development Goals (SDG). This study makes use of secondary data that was collected from 16 Indian states and one Union Territory between the fiscal years of 2018 and 2020. The goal of this study has been investigated using panel data regression analysis (PDR). And the study’s findings indicate that wages received through MNREGA accounts and post office operating accounts under the supervision of Internet subscribers have a significant negative impact on India’s SDGs, demonstrating how financial inclusion is harming the country’s efforts to achieve sustainable development. This study suggests that it is important to pay attention to rural areas’ access to the digital environment and their degree of digital literacy. These findings imply that improving the MGNREGA program and employees’ pay might help the government alleviate poverty in India. Financial inclusion also depends heavily on financial literacy. The government should improve its digital infrastructure in rural and urban areas so that people there may better understand and utilize it given that it promotes financial inclusion, digitalization, economic advancement, rural development, and poverty reduction.
Rahul Sinha(Rahul Sinha ),Sonali Singh(Sonali Singh ),Gautam Kamila(Gautam Kamila ),Ashish Upadhyay(Ashish Upadhyay ) 대한소아신경학회 2022 대한소아신경학회지 Vol.31 No.1
Purpose: This study investigated the diagnostic utility of short-term video electroencephalography (EEG) recordings at a tertiary care center in North India. Methods: A retrospective analysis was conducted of 30 minutes of video EEG recordings done between January 2021 and January 2022 in children between 1 and 10 years of age. Demographic and clinical data were collected from the EEG register. Age, sex, the clinical diagnosis, the number of anti-seizure medicines (ASMs), the activation procedures used, and EEG abnormalities were recorded. Results: Data from 100 children (male-to-female ratio, 1.9:1) were analysed. The mean age was 5.39±2.02 years. The indications for EEG recordings were epileptic disorders, neurodevelopmental disorders, paroxysmal non-epileptic events, and miscellaneous in 66%, 18%, 9%, and 7% of children, respectively. EEG abnormalities were seen in 50 children (50%) and about 45% of children were on two or more ASMs. EEG abnormalities in sleep were seen in 35 of 66 (53%) children, whereas abnormalities were observed on awake recordings with activation procedures (hyperventilation and photic) in 23 of 34 (68%) children; this difference was not statistically significant (P=0.16) Conclusion: EEG abnormalities were significantly more common in children taking multiple ASMs; however, there was no statistically significant difference in the EEG yield between asleep and awake records with activation procedures. A better selection of patients for routine EEG, through an assessment of their clinical history and comorbidities, is warranted to increase its diagnostic yield.
Singh, Rahul,Bhattacharya, B.,Gupta, Meenal,Rahul, Meenal,Khan, Zishan H.,Tomar, S.K.,Singh, Vijay,Singh, Pramod K. Pergamon Press 2017 International journal of hydrogen energy Vol.42 No.21
<P><B>Abstract</B></P> <P>This paper reports the synthesis, characterization and dual electrochemical application of a new kind of ionic liquid (IL) based polymer electrolyte. The ionic liquid 1, 2-dimethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide (DMPImTFSI) and polymer Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) have been chosen for present study. The electrical conductivity measurement shows many fold enhancement of ionic conductivity by blending IL into polymer matrix. Scanning electron microscopy (SEM) image confirms the uniform surface morphology of the synthesized thin film and cross-section image shows the interface layer of polymer and electrode. We have fabricated an efficient dye sensitized solar cell (DSSC) and electric double layer capacitor (EDLC) using IL-polymer electrolyte (optimized maximum conductivity) system which further affirms that this material is highly stable and reliable for long duration in energy devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Novel polymer gel electrolyte system for dual energy storage electrochemical application. </LI> <LI> Liquid like ionic conductivity of gel polymer electrolyte with high transparency in the film. </LI> <LI> Highly stable electrical performance of DSSC and EDLC devices. </LI> </UL> </P>
Visible upconversion in Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped LaAlO<sub>3</sub> phosphors
Singh, Vijay,Rai, V.K.,Singh, N.,Pathak, M.S.,Rathaiah, M.,Venkatramu, V.,Patel, Rahul V.,Singh, Pramod K.,Dhoble, S.J. Elsevier 2017 Spectrochimica acta. Part A, Molecular and biomole Vol.171 No.-
<P><B>Abstract</B></P> <P>The Er<SUP>3+</SUP> doped and Er<SUP>3+</SUP>/Yb<SUP>3+</SUP> co-doped LaAlO<SUB>3</SUB> phosphors have been synthesized by the combustion method and characterized their structural, morphological, elemental, vibrational and optical properties. The optical absorption and upconversion properties of the synthesized phosphors have been studied. Upon co-doping Yb<SUP>3+</SUP> ions into Er<SUP>3+</SUP>:LaAlO<SUB>3</SUB>, the blue, green and red upconversion emissions of Er<SUP>3+</SUP> ions have been enhanced about ~20, ~54 and ~22 times, under 978nm laser excitation. The observed upconversion emissions could be due to excited state absorption in Er<SUP>3+</SUP>:LaAlO<SUB>3,</SUB> whereas energy transfer is dominant mechanism in Er<SUP>3+</SUP>/Yb<SUP>3+</SUP>:LaAlO<SUB>3</SUB> phosphors. The tuning in the color emitted from the synthesized phosphors towards the green region has been found due to incorporation of the Yb<SUP>3+</SUP> ions. With increase in the pump power, the color emitted from the co-doped phosphor is not tuned significantly, showing its applicability in making the green display devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> By facile combustion synthesis, Er<SUP>3+</SUP> and Er<SUP>3+</SUP>/Yb<SUP>3+</SUP> doped LaAlO<SUB>3</SUB> phosphors are obtained. </LI> <LI> Phosphor was characterized using XRD, SEM-EDX, FTIR and Up-conversion spectroscopy. </LI> <LI> Upon excitation at 978nm, intense up-conversion emission is observed. </LI> <LI> Prepared materials could be suitable for up-conversion lasers and green display device. </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>