8 results on '"Mahich S"'
Search Results
2. P0603 / #941: CLINICO-MICROBIOLOGICAL PROFILE, ANTIMICROBIAL SUSCEPTIBILITY PATTERN, AND OUTCOME OF NEONATES WITH CULTURE POSITIVE SEPSIS.
- Author
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Kumar, S., primary, Mahich, S., additional, Sundaram, V., additional, and Gautam, V., additional
- Published
- 2021
- Full Text
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3. CSF Interleukins-12, 17 and Interferon-γ Levels in Children with Subacute Sclerosing Panencephalitis.
- Author
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Dewan V, Mahich S, and Sachan D
- Abstract
Subacute sclerosing panencephalitis (SSPE) is a devastating fatal condition caused by mutated measles virus. It predominantly affects children of younger age and invariably leads to mortality. Though reported rarely, the disease continues to cause significant morbidity in children. The authors conducted an observational study in which CSF was withdrawn from 24 cases of confirmed SSPE (Dyken's criteria) and interleukin levels were estimated by ELISA method. On analysis, IL-12 was significantly elevated in CSF of stage 3 SSPE patients with p value of 0.02. It was elevated in only 2 patients of stage 3 which is the major limitation of this study. No significant difference was seen in IL-17 and interferon-γ levels between different stages of SSPE in serum and CSF. This study highlights the significant elevation of IL-12 cytokine while other studied cytokines (IL-17/ IFN-γ) were not significantly altered in these patients., (© 2024. The Author(s), under exclusive licence to Dr. K C Chaudhuri Foundation.)
- Published
- 2024
- Full Text
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4. Metal-free adsorption and photodegradation methods for methylene blue dye removal using different reduction grades of graphene oxide.
- Author
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Mahich S, Saini YK, Devra V, Aggarwal K, Kumar A, Kumar D, Singh A, and Arya Y
- Abstract
The release of organic pollutants and dyes into the environment by industries has had profound and harmful effects on both humans and ecosystems. Graphene oxide (GO) and its reduced form have been investigated for their effectiveness in removing pollutant dyes. GO nano-powder was synthesized using an improved version of Hummer's method and subsequently thermally reduced at various temperatures, including 125, 150, 175, and 200 °C, under vacuum conditions. In the X-ray diffraction spectra, an intense (001) diffraction peak was initially observed at 9.136° (2θ) for pristine GO. This peak gradually shifted towards higher angles as the reduction process took place and eventually disappeared when the GO was reduced at 200 °C. The intensity ratio of the D and G bands (ID/IG ratio) for GO nano-powder in the Raman spectra decreased from 0.94 to 0.76 due to the reduction process. The FTIR spectra of GO and reduced graphene oxide (rGO) also illustrated the reduction process. The bandgap of pristine GO significantly decreased from 2.31 to 0.73 eV, as determined by ultraviolet-visible (UV-Vis) diffuse reflectance spectrophotometry during the reduction process. The surface area and pore volume of both pristine GO and rGO-150 were determined using the BET (Brunauer-Emmett-Teller) and BJH (Barrett-Joyner-Halenda) methods. The results indicated an increase in the BET surface area from 6.61 to 7.86 m
2 /g and a corresponding enhancement in pore volume from 0.118 to 0.128 cc/g after reduction. The adsorption and photocatalytic degradation behavior of pristine GO and reduced graphene oxides (rGOs) were examined using methylene blue dye. The pristine GO demonstrated impressive adsorption capability, effectively removing the dye by 85.78 % within just 15 min and achieving nearly 97 % removal after 4 h. In contrast, the highest photocatalytic degradation of methylene blue, about 47.58 %, was attained for the rGO sample reduced at 150 °C under the illumination of visible light., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)- Published
- 2024
- Full Text
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5. A Comparative Study of Endoscopic Assisted Powered Adenoidectomy Versus Conventional Adenoidectomy.
- Author
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Beemrote DS, Aseri Y, Rawat DS, Mahich S, and Verma PC
- Abstract
Adenoidectomy is one of the most common procedures performed in children today, either alone or in conjunction with tonsillectomy or insertion of ventilating tubes. The present study was planned to compare the endoscopic powered adenoidectomy versus conventional adenoidectomy. The present prospective observational randomized study was carried out in the Department of Otorhinolaryngology of a tertiary care teaching hospital of Rajasthan. Fifty patients with adenoid hypertrophy in the age group between 5-13 years were enrolled in the study and divided in to two groups viz. cases undergoing conventional adenoidectomy using curettage method (group A = 25) and cases undergoing endoscopic powered adenoidectomy (group B = 25). Intra operative time, primary bleeding, completeness of adenoid removal, depth of resection, and collateral damage were noted intra operatively in both the groups. Postoperative pain, recovery time, postoperative complications were also compared. Intra operative time taken in Group A was 25.6 ± 2.90 min while it was 35.04 ± 5.24 min in Group B. (p < 0.0001) Average blood loss in Group A was 18.4 ± 4.72 ml compared to an average blood loss of 29.32 ± 2.59 ml in Group B. (p < 0.0001) The postoperative recovery time in Group A was 4.93 days and it was 3.06 days in group B. (p = 0.00). The present study concluded that newer method of endoscopic powered adenoidectomy was found to be a safe and useful tool for adenoidectomy in terms of completeness of resection, better control of depth of resection and minimal collateral damage intra-operatively and less postoperative pain, complications and fast recovery period., Supplementary Information: The online version contains supplementary material available at 10.1007/s12070-023-03633-4., Competing Interests: Conflicts of interest/Competing InterestsNone., (© Association of Otolaryngologists of India 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
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- 2023
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6. Solution-processed CZTS thin films and its simulation study for solar cell applications with ZnTe as the buffer layer.
- Author
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Prakash B, Meena A, Saini YK, Mahich S, Singh A, Kumari S, Tripathi CSP, and Choudhary BL
- Subjects
- Tellurium, Zinc, Computer Simulation, Zinc Oxide, Solar Energy
- Abstract
Using zinc tellurium (ZnTe) as the buffer layer in the Cu
2 ZnSnS4 (CZTS)-based solar cells showed an improvement in overall efficiency. ZnTe is investigated as an alternative to replace the conventional toxic Cd-contained buffer layers. It may also reduce the overall cost of these cells as both layers (ZnTe and CZTS) have eco-friendly and earth-abundant constituents. The sol-gel spin coating method is used for the deposition of CZTS thin films on the corning glass substrates. The X-ray diffraction studies showed the peaks corresponding to (112), (200), (220), and (312) planes which confirmed the formation of the essential kesterite phase. The optical band gap of the deposited films was found at around 1.45 eV by the UV-visible-NIR spectrophotometer. The optimum thickness of the absorber layer (CZTS) and buffer layer (ZnTe) was investigated based on the performance of the ZnO:Al/ZnO/ZnTe/CZTS/Mo cell structure by using the AMPS-1D simulation tool. In contrast, the tool was molded by the experimentally investigated data for the constituent materials of the cell structure. The solar cells' efficiency was increased by 23.47% at 2500 nm and 50 nm thickness of the CZTS and ZnTe layers, respectively. In addition, it was analyzed and found that the current density value showed an improvement with operating temperature as it is one of the requirements in the high solar radiation areas where the temperature even rises more than 50 °C in the summer., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2023
- Full Text
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7. Epidemiology, microbiological profile, and outcome of culture positive sepsis among outborn neonates at a tertiary hospital in Northern India.
- Author
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Mahich S, Angurana SK, Sundaram V, and Gautam V
- Subjects
- Infant, Newborn, Male, Humans, Female, Microbial Sensitivity Tests, Tertiary Care Centers, Anti-Bacterial Agents therapeutic use, Escherichia coli, Staphylococcus aureus, India epidemiology, Sepsis drug therapy, Sepsis epidemiology, Sepsis microbiology, Neonatal Sepsis drug therapy, Neonatal Sepsis epidemiology, Neonatal Sepsis microbiology
- Abstract
Aims and Objectives: To study the epidemiology, microbiological profile, and outcome of culture positive sepsis among outborn neonates at a tertiary care teaching hospital in Northern India., Materials and Methods: Neonates ( n = 406) with blood culture positive sepsis were enrolled prospectively over a period of 1 year (February 2018-January 2019). Demographic details, clinical features, microbiological profile, antibiotic sensitivity pattern, treatment, and outcome were recorded., Results: The mean (±SD) age at presentation was 2.4 (±0.6) days and 2/3rd were males. The mean (±SD) gestation was 35.5 (±3.4) weeks, birth weight was 2215 (±219) g, and 42.4% were preterm. The proportion of neonates with early and late onset sepsis were 69% and 31%, respectively. Predominant isolates were Gram-negative (46.5%), Gram-positive (27.6%) organisms, and yeast (25.9%). Klebsiella pneumoniae (46.5%), Acinetobacter baumannii (17.5%), and Escherichia coli (8%) were common Gram-negative; and coagulase negative Staphylococcus (CONS) (70%), Staphylococcus aureus (13.4%), and Enterococcus (12.5%) were common Gram-positive organisms. Among Gram-negative organisms, the antibiotic sensitivity pattern was ciprofloxacin 45%, cephalosporins 15-40%, aminoglycosides 20-42%, piperacillin-tazobactam 49%, carbapenems 34-51%, tetracyclines 55-70%, doxycycline 55%, chloramphenicol 42%, and colistin 98%; and among Gram-positive organisms were methicillin 30%, clindamycin 52%, vancomycin 100%, teicoplanin 98%, and linezolid 99%. The survival rate was 60.3%. The neonates with Gram-negative sepsis had higher requirement of oxygen, mechanical ventilation, and vasoactive drugs; had more complications; and lower survival (50.3% vs. 72.3%, p = .003) when compared to Gram-positive sepsis., Conclusions: Gram-negative organisms were commonest cause of neonatal sepsis, had low sensitivity to commonly used antibiotics, and associated with poor outcome.
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- 2022
- Full Text
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8. Acinetobacter Sepsis Among Out-born Neonates Admitted to Neonatal Unit in Pediatric Emergency of a Tertiary Care Hospital in North India.
- Author
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Mahich S, Angurana SK, Suthar R, Sundaram V, Munda VS, and Gautam V
- Subjects
- Anti-Bacterial Agents therapeutic use, Child, Female, Humans, India epidemiology, Infant, Newborn, Male, Microbial Sensitivity Tests, Prospective Studies, Tertiary Care Centers, Acinetobacter, Neonatal Sepsis drug therapy, Neonatal Sepsis epidemiology, Sepsis drug therapy, Sepsis epidemiology
- Abstract
Objectives: To study the clinical profile, complications, antibiotic resistance pattern, treatment, and outcome of out-born neonates with Acinetobacter spp. sepsis admitted in Pediatric emergency of a tertiary care hospital in North India., Methods: In this subgroup analysis of a prospective study (conducted over 1 y, February 2018 through January 2019), neonates with Acinetobacter spp. sepsis were included. The data collection included demographic details, clinical features, pre-referral treatment, complications, antibiotic resistance pattern, treatment, and final outcome., Results: Acinetobacter spp. accounted for 10.6% (43/406) of all isolates and 22.7% (43/189) of Gram-negative isolates. The median (IQR) age at presentation was 1 (1-2) d, 2/3rd were male, and 46.5% were preterm. All were admitted in peripheral hospitals before referral to authors' centre and all received intravenous antibiotics and fluids. The resistance to different antibiotics was: Ciprofloxacin 82%, cephalosporins 78-100%, amikacin 75%, pipercillin-tazobactum 62%, carbapenems 50-85%, chloramphenicol 83%, and tetracycline 50-60%. All isolates were sensitive to colistin. The survival rate was 37.2% (n = 16) and 62.8% (n = 27) had poor outcome [death and Left against medical advice (LAMA)]. Higher proportion of neonates with Acinetobacter sepsis had septic shock, multi-organ dysfunctional syndrome (MODS), and disseminated intravascular coagulation (DIC); and higher proportion required mechanical ventilation, vasoactive drugs, and had poor outcome compared to those with sepsis due to other organisms., Conclusions: Acinetobacter spp. accounts for high burden of sepsis among out-born neonates and is associated with alarmingly high resistance to cephalosporins, fluroquinolones, aminoglycosides, pipercillin-tazobactum, tetracyclines, and carbapenems. Neonates with Acinetobacter spp. sepsis had higher rates of complications, requirement of mechanical ventilation and vasoactive drugs, and poor survival.
- Published
- 2021
- Full Text
- View/download PDF
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