Myoclonic-Atonic Epilepsy Masquerading as Subacute Sclerosing Panencephalitis: A Clinical Conundrum

Rahul Sinha(Rahul Sinha ),Sonali Singh(Sonali Singh ),Nagarajan Balamurugan(Nagarajan Balamurugan ),Abhishek Pandey(Abhishek Pandey ) 대한소아신경학회 2022 대한소아신경학회지 Vol.30 No.4

3D Printing: It’s Microfluidic Functions and Environmental Impacts

Abhishek Sharma,Jitendra K. Pandey,Surajit Mondal,Amit Kumar Mondal,Soumadeep Baksi,Ravi Kumar Patel,추원식 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.4 No.3

Innovative micro products essential for the utilization of a wide variety of macro subjects have complicated three-dimensional (3D) microstructures in addition to a high aspect ratio. Till date, many micro manufacturing processes have been developed, but a specific class of such processes is applicable for fabrication of true 3D micro assembly. The aptitude to process a broad range of materials and the ability to fabricate functional and geometrically complicated, 3D microstructures provides the additive manufacturing (AM) processes which significant profits over traditional methods, such as lithography-based or micromachining approaches investigated widely in the past. In this paper, 3D micro-AM processes have been classified into three main groups, including scalable micro-AM systems, 3D direct writing, and hybrid processes, and the key processes have been reviewed comprehensively. Principle and recent progress of each 3D micro-AM process have been described, and the advantages and disadvantages of each process have low-cost along with its occupational health safety & environmental issues.

Some Geometric Properties of η_∗-Ricci Solitons on α-Lorentzian Sasakian Manifolds

Shashikant, Pandey,Abhishek, Singh,Rajendra, Prasad Department of Mathematics 2022 Kyungpook mathematical journal Vol.62 No.4

We investigate the geometric properties of 𝜂_*-Ricci solitons on α-Lorentzian Sasakian (α-LS) manifolds, and show that a Ricci semisymmetric 𝜂_*-Ricci soliton on an α-LS manifold is an 𝜂_*-Einstein manifold. Further, we study 𝜑_*-symmetric 𝜂_*-Ricci solitons on such manifolds. We prove that 𝜑_*-Ricci symmetric 𝜂_*-Ricci solitons on an α-LS manifold are also 𝜂_*-Einstein manifolds and provide an example of a 3-dimensional α-LS manifold for the existence of such solitons.

Nano-CeO2 Doped Cu–Al–Ni SMAs with Enhanced Mechanical as well as Shape Recovery Characteristics

Shahadat Hussain,Abhishek Pandey,Rupa Dasgupta 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.6

Effect of nano-CeO2 doping was studied on self-accommodating Cu–12Al–4Ni based shape memory alloys. Cu–Al–Ni basedalloys are known for their high thermal stability and good shape memory properties but mechanical processing of thesealloys is very difficult due to their high brittle nature and susceptibility to inter-granular failure. The present work deals withthe enhancement of mechanical as well as shape recovery characteristics of these alloys with the addition of nano-CeO2. Significant improvements in ductility (1.8 times), strength and shape recovery were observed with the addition of nano-CeO2with respect to the base alloy.

Time-series analysis of open data for studying urban heat island phenomenon: a geospatial approach

Rao Priyanka,Singh Abhishek,Pandey Kamal 대한공간정보학회 2021 Spatial Information Research Vol.29 No.6

Urbanization is increasing with a faster pace in almost all the cities of India, which has somehow prompted the anthropogenic activities eventually influencing the environment in this climate change scenario. This has led to the more prominent urban heat island (UHI) effect in urban areas, significantly raising the surface temperature of urban built-up. To focus on this issue, a spatio-temporal analysis of UHI over the Jaipur site of Rajasthan has been performed using moderate-resolution imaging spectroradiometer (MODIS) land surface temperature (LST) and MODIS Normalized Difference Vegetation Index (NDVI) for 16 years i.e., from 2003 to 2018 wherein NDVI has been used to analyze the status of vegetation in the urban and non-urban area w.r.t. UHI phenomenon. Study of UHI phenomenon has been done by computing the difference of mean LST between urban area and urban periphery (at a buffer distance of 2 km from urban boundary) both for day and night time. The difference of LST day time observed between urban and non-urban (buffer) is 0.06 C in May, 2003 and 0.51 C in May, 2018 whereas, difference of LST night time between urban and area surrounding to urban is 0.58 C in May, 2003 and 1.41 C in May, 2018. From the quantitative analysis of land use land cover it has been observed that there is a rapid increase of urban area from 63% in 2003 to 69% in 2018 and vegetation cover decreased from 36% in 2003 to 31% in 2018. The percentage decrease of vegetation cover from 2003 to 2018 is 5% and the percentage increase in urban area is 6% which is still continuing at an even faster rate. Data preparation tasks can be greatly minimized by using analysis ready open data available in the public domain for carrying out such studies. The approach followed in the study will assist researchers to carry out a quick spatio-temporal analysis for the identification of areas susceptible to increasing variability of LST. Also, it provides a basis to understand and manage urban stress, one of the major causes of unalterable damages to the environment.

Nutrient recycling of source-separated human faeces using biochar immobilized indigenous psychrotrophic bacteria for sustaining the agroecosystems of north-western Himalaya

Borker Shruti Sinai,Thakur Aman,Pandey Krishna Kanta,Sharma Pallavi,Manyapu Vivek,Khatri Abhishek,Kumar Rakshak 한국응용생명화학회 2024 Applied Biological Chemistry (Appl Biol Chem) Vol.67 No.-

The Himalayan composting toilets (CTs) offer a sustainable solution for converting human faeces (HF) into com post, supplementing the low-fertile land of the region. However, CTs face challenges such as delayed composting processes (6–8 months), increased heavy metal content, and foul odour. Therefore, the current study evaluated biochar-amended psychrotrophic bacteria for HF degradation under low-temperature conditions (10 ± 2 °C). Out of 153 psychrotrophic bacteria isolated from HF compost, 17 bacterial strains were selected based on highest and two or more hydrolytic activities. Furthermore, considering the isolation source, bacterial strains were exam ined for haemolytic activity, biofilm formation, cytotoxicity and seed germination assay. In total, 14 potential strains belonging to Pseudomonas, Microbacterium, Arthrobacter, Streptomyces, Glutamicibacter, Rhodococcus, Serratia, Exig uobacterium, and Jeotgalicoccus genera were considered safe for both human handling and plants. The composting process was conducted in modified plastic drums at 10 ± 2 °C for 90 days through two treatments: Treatment 1 (T1) involving HF, non-immobilized biochar and cocopeat, and Treatment 2 (T2) involving HF, consortium-immobilized biochar and cocopeat. The consortium-immobilized biochar (T2) degraded HF within 90 days with hemicellulose and cellulose degradation ratios of 73.9% and 62.4%, respectively (p ≤ 0.05). The compost maturation indices like C/N ratio (16.5 ± 1.85), total nitrogen (2.66 ± 0.07), total phosphate (0.4 ± 0.005), total potassium (1.8 ± 0.05) also improved in T2 treatment (p ≤ 0.05). Additionally, T2 was more effective in achieving safe levels of faecal coliforms (< 1000 MPN g−1) and reducing heavy metal content compared to T1. 16S rRNA amplicon-based analysis demonstrated an enhancement of bacterial community diversity in T2, with the presence of Rhodococcus, Pseudomonas, Arthro bacter, and Streptomyces at the end of the composting period promoting HF degradation. Furthermore, T2-fertilized soil showed a germination index (121 ± 0.4, p ≤ 0.05) and stimulated root, shoot and yield by 110%, 45.2%, and 288%, respectively, in pea (Pisum sativum var. AS-10) compared to T1 (49.6%, 19%, and 5.8%, respectively) (p ≤ 0.05). In con clusion, the developed biochar-based formulation proved effective in degrading HF at low temperatures, mitigating foul odours, reducing heavy metals, and enhancing the agronomic value of the final compost. This study presents a promising approach for the sustainable management of HF that can supplement the non-nutritive soil of high altitude regions.

Understanding the electrocatalysis OER and ORR activity of ultrathin spinel Mn3O4

Chinmayee Chowde Gowda,Ankita Mathur,Arko Parui,Partha Kumbhakar,Prafull Pandey,Sudhanshu Sharma,Amreesh Chandra,Abhishek K. Singh,Aditi Halder,Chandra Sekhar Tiwary 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-

Rapid depletion of non-renewable sources has made us look into possible green energy alternatives tomeet energy challenges. Electrocatalytic reactions involving oxygen evolution reaction (OER) and oxygenreduction reaction (ORR) play crucial roles in assisting the derivation of clean forms of energy. Here, wedemonstrate that few layers of the manganese oxide: hausmannitene (atomically thin two dimensional(2D-Mn3O4) can be exfoliated from its bulk form hausmannite (Mn3O4). Most significantly, the hausmanniteneexhibits catalytic activity towards oxygen reduction and evolution reactions. The hausmannitenehas enhanced Mn(III) ions (65%) compared to its parent structure hausmannite (31%). The Mn(III) ionsin a distorted lattice show the highest catalytic activity towards OER performance with the oxygen electrodeactivity (DE) of 1.08 eV for hausmannitene. The density functional theory (DFT) calculations, confirmedthe presence of both Mn(III) and Mn(II) sites on the (112)-oriented surface of Mn3O4 which arehighly active for OER and ORR, having vacant and filled orbitals of lowest and highest energy, respectively. Increased oxidation sites aiding to better performance of 2D structure was theoretically manifested. Therefore, demonstrating that similar mechanisms can be used to explore other 2D oxides aspossible efficient stable electrocatalyst substitute for energy conversion.