Photo Physical Studies of PVP Arrested ZnS Quantum Dots

Ashutosh Kumar Shahi,Bishnu Kumar Pandey,Bheeshma Pratap Singh,Bipin Kumar Gupta,Sukhvir Singh,Ram Gopal 대한금속·재료학회 2017 ELECTRONIC MATERIALS LETTERS Vol.13 No.2

Monodispersed polyvinylpyrrolidone (PVP) arrested ZnS quantumdots (QDs) having diameter in range ~2-5 nm are synthesized by acolloidal precipitation method using PVP as the stabilizing agent. X-ray diffraction (XRD), transmission electron microscopy (TEM),high resolution transmission electron microscopy (HRTEM),selective area electron diffraction (SAED) and Fourier transforminfrared (FT-IR) spectroscopy are probed to investigate thestructural information. The optical properties are studied usingdiffuse UV-visible reflectance and photoluminescence (PL)spectroscopy techniques. TEM images as well as XRD reflectionpeak broadening indicate the nanometer size particles formationwith cubic (sphalerite) phase within the polymer matrix. Opticalabsorbance studies reveal an excitonic peak at around ~310 nmdictates the effect of quantum confinement effect in the ZnS QDs. PL emission spectra for ZnS QDs in PVP exhibit four emissionpeaks at ~382 nm, ~414 nm, ~480 nm and ~527 nm are observed. These excitonic emissions from ZnS QDs are caused by theinterstitial sulfur/Zn vacancies and surface states.

Interleukin-1B (IL-1B-31 and IL-1B-511) and interleukin-1 receptor antagonist (IL-1Ra) gene polymorphisms in primary immune thrombocytopenia

Deependra Kumar Yadav,Anil Kumar Tripathi,Divya Gupta,Saurabh Shukla,Aloukick Kumar Singh,Ashutosh Kumar,Jyotsna Agarwal,K. N. Prasad 대한혈액학회 2017 Blood Research Vol.52 No.4

Background: Immune thrombocytopenia (ITP) is an immune-mediated disease caused by autoanti-bodies against platelets membrane glycoproteins GPIIb/IIIa and GPIb/IX. The etiology of ITP remains unclear. This study evaluated the association of polymorphisms in interleukin (IL)-1B-31, IL-1B-511, and IL-1Ra with ITP. Methods: Genotyping of IL-1B-31, IL-1B-511, and IL-1Ra was performed in 118 ITP patients and 100 controls by polymerase chain reaction restriction fragment length polymorphism and detection of variable number tandem repeats. Results: Genotype differences in IL-1B-31 and IL-1Ra were significantly associated with ITP. Patients showed a higher frequency of the IL-1B-31 variant allele (T) and a 1.52-fold greater risk of susceptibility to ITP (odds ratio [OR]=1.52, 95% confidence interval [CI]=1.04‒2.22, P=0.034). The frequencies of both homozygous and heterozygous variant geno-types of IL-1B-31 were higher (OR=2.33, 95% CI=1.069‒5.09, P=0.033 and OR=2.044, 95% CI=1.068‒39, P=0.034) among patients and were significantly associated with ITP susceptibility. Both homozygous and heterozygous variant genotypes of IL-1Ra were also more frequent (OR=4.48, 95% CI=1.17‒17.05, P=0.0230 and OR=1.80, 95% CI=1.03‒3.14, P=0.0494) among patients and were associated with ITP risk. IL-1B-31 and IL-1Ra also showed significant association with severe ITP. However, IL-1B-511 was not asso-ciated with ITP. Conclusion: IL-1B-31 and IL-1Ra polymorphisms may significantly impact ITP risk, and they could be associated with disease severity, which may contribute to the pathogenesis of ITP.

Interleukin-1B (IL-1B-31 and IL-1B-511) and interleukin-1 receptor antagonist (IL-1Ra) gene polymorphisms in primary immune thrombocytopenia

Deependra Kumar Yadav,Anil Kumar Tripathi,Divya Gupta,Saurabh Shukla,Aloukick Kumar Singh,Ashutosh Kumar,Jyotsna Agarwal,K. N. Prasad 대한혈액학회 2017 Blood Research Vol.51 No.4

Background: Immune thrombocytopenia (ITP) is an immune-mediated disease caused by autoanti-bodies against platelets membrane glycoproteins GPIIb/IIIa and GPIb/IX. The etiology of ITP remains unclear. This study evaluated the association of polymorphisms in interleukin (IL)-1B-31, IL-1B-511, and IL-1Ra with ITP. Methods: Genotyping of IL-1B-31, IL-1B-511, and IL-1Ra was performed in 118 ITP patients and 100 controls by polymerase chain reaction restriction fragment length polymorphism and detection of variable number tandem repeats. Results: Genotype differences in IL-1B-31 and IL-1Ra were significantly associated with ITP. Patients showed a higher frequency of the IL-1B-31 variant allele (T) and a 1.52-fold greater risk of susceptibility to ITP (odds ratio [OR]=1.52, 95% confidence interval [CI]=1.04‒2.22, P=0.034). The frequencies of both homozygous and heterozygous variant geno-types of IL-1B-31 were higher (OR=2.33, 95% CI=1.069‒5.09, P=0.033 and OR=2.044, 95% CI=1.068‒39, P=0.034) among patients and were significantly associated with ITP susceptibility. Both homozygous and heterozygous variant genotypes of IL-1Ra were also more frequent (OR=4.48, 95% CI=1.17‒17.05, P=0.0230 and OR=1.80, 95% CI=1.03‒3.14, P=0.0494) among patients and were associated with ITP risk. IL-1B-31 and IL-1Ra also showed significant association with severe ITP. However, IL-1B-511 was not asso-ciated with ITP. Conclusion: IL-1B-31 and IL-1Ra polymorphisms may significantly impact ITP risk, and they could be associated with disease severity, which may contribute to the pathogenesis of ITP.

Resource-efficient load-balancing framework for cloud data center networks

Kumar, Jitendra,Singh, Ashutosh Kumar,Mohan, Anand Electronics and Telecommunications Research Instit 2021 ETRI Journal Vol.43 No.1

Cloud computing has drastically reduced the price of computing resources through the use of virtualized resources that are shared among users. However, the established large cloud data centers have a large carbon footprint owing to their excessive power consumption. Inefficiency in resource utilization and power consumption results in the low fiscal gain of service providers. Therefore, data centers should adopt an effective resource-management approach. In this paper, we present a novel load-balancing framework with the objective of minimizing the operational cost of data centers through improved resource utilization. The framework utilizes a modified genetic algorithm for realizing the optimal allocation of virtual machines (VMs) over physical machines. The experimental results demonstrate that the proposed framework improves the resource utilization by up to 45.21%, 84.49%, 119.93%, and 113.96% over a recent and three other standard heuristics-based VM placement approaches.

Strategic Planning for Effective Hospitality and Tourism Rducation: Some Observations and Suggestions

Kumar Ashutosh 한국문화관광학회 2021 문화관광연구 Vol.23 No.1

Tourism education has been considered as one of the important tool for the sustainability of tourism industry. In fact, we cannot think the development of hospitality and tourism industry without imparting education in this field. The current status of tourism education in India as well as future need which might arise soon is discussed in this paper. The aim of the study is to suggest a strategic approach in order to make tourism education more effective and worthy.. Deans, Directors of the institutions offering tourism education in India were asked to complete a questionnaire. A total of 40 usable questionnaires were seveted . Participants were asked to rate the extent of their business schools collaborating with industry on 23 listed areas on a scale of 1 to 5. The various modes of academia- industry interface were also highlighted to understand the pedagogy. The importance of guest lectures, training and internship of students was also discussed with participants. The Paper also highlights the number of avenues through which hospitality & tourism institutions can collaborate with industry. The top five modes are- Guest lectures, training and internship of students, inclusion of industry experts in board of studies executive level programme and industry inputs in curriculum designing. The paper also highlights the extent of perceived benefits from mentioned partnership methods. It was found that joint seminars and case reading were the most useful in this regard.

Prediction of the impact of HRT and the biodegradability on sludge acidogenesis using artificial neural network

Ashutosh Kumar Pandey(아슈토시 쿠마 판디),Jungsu Park(박정수),Morya Raj(라지 모리야),Sang-Hyoun Kim(김상현) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11

Strategic Planning for Effective Hospitality and Tourism Education -Some Observations and Suggestions-

( Kumar Ashutosh ) 세계문화관광학회 2014 International Journal of Culture and tourism Resea Vol.7 No.1

Tourism education has been considered as one of the important tool for the sustainability of tourism industry. In fact, we cannot think the development of hospitality and tourism industry without imparting education in this field. The current status of tourism education in India as well as future need which might arise soon is discussed in this paper. The aim of the study is to suggest a strategic approach in order to make tourism education more effective and worthy. Deans, Directors of the institutions offering tourism education in India were asked to complete a questionnaire. A total of 40 usable questionnaires were seveted . Participants were asked to rate the extent of their business schools collaborating with industry on 23 listed areas on a scale of 1 to 5. The various modes of academia- industry interface were also highlighted to understand the pedagogy. The importance of guest lectures, training and internship of students was also discussed with participants. The Paper also highlights the number of avenues through which hospitality & tourism institutions can collaborate with industry. The top five modes are- Guest lectures, training and internship of students, inclusion of industry experts in board of studies executive level programme and industry inputs in curriculum designing. The paper also highlights the extent of perceived benefits from mentioned partnership methods. It was found that joint seminars and case reading were the most useful in this regard.

Ventilatory Strategies in Traumatic Cervical Spinal Cord Injury: Controversies and Current Updates

Kumar Ashutosh,Khandelwal Ankur,Jamil Shaista 대한척추외과학회 2023 Asian Spine Journal Vol.17 No.4

Ventilatory management of patients with traumatic cervical spinal cord injury (CSCI) is a complex and controversial area of critical care medicine. Despite significant advances in our understanding of the pathophysiology of CSCI and the development of novel interventions, there remains a lack of consensus about the optimal approach to ventilatory management in these patients. Some of the key controversies in CSCI ventilatory management include timing of tracheal intubation, non-invasive ventilation versus invasive ventilation, high versus low tidal volume, and early versus late tracheostomy. The objective of this review is to discuss the existing controversies and provide an insight on the current evidence.

Experimental strategy for acid-free plutonium recovery from assorted matrices: Non-aqueous leaching followed by selective solid phase extraction

Kumar Shiny Suresh,Rao Ankita,Srivastava Ashutosh,Yadav Kartikey Kumar,Lenka Raja Kishore 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.11

Methodologies comprising usage of innocuous reagents, lower overall chemical inventory and simplification of process scheme for plutonium recovery from assorted matrices, solid as well as liquid, are key to establishing sustainability of the nuclear fuel cycle. The present study demonstrates, for the first-time, plutonium leaching from different refractory matrices: oxide, mixed oxide as well as simulated cellulosic waste using the benign halide anion free choline citrate - urea (1 : 2 mole ratio) based eutectic solvent (referred to as CU). This mineral acid and hydrofluoric acid-free, non-aqueous route of plutonium recovery with controlled infra-red heating yielded ≥93% efficiency. CU was diluted with biodegradable, less viscous propylene glycol (referred to as PG), which was chosen as the non-aqueous polar phase for facile solid phase extraction (SPE), which is a green alternative to liquid-liquid extraction owing to process simplification and solvent inventory reduction. Exclusive stabilization of tetravalent plutonium in the novel media, confirmed by ultraviolet-visible spectrophotometry and electrochemical methods, led to process simplification, eliminating any pre-extraction requirement for oxidation state adjustment. Extractant, di-2-ethyl hexyl phosphoric acid encapsulated polyether sulfone beads, prepared by phase inversion method, were employed for efficient SPE of plutonium (Distribution co-efficient, kD=950±6). Selectivity of non-aqueous SPE was found to be Pu(IV)≫UO 2+ 2 >Am(III) vis-à-vis aqueous acid medium.

The rich heritage of anatomical texts during Renaissance and thereafter: a lead up to Henry Gray’s masterpiece

Sanjib Kumar Ghosh,Ashutosh Kumar 대한해부학회 2019 Anatomy & Cell Biology Vol.52 No.4

The practice of modern human anatomy was started by Vesalius in sixteenth century Europe during the Renaissance. His exploits are documented in his legendary anatomical text De humani corporis fabrica. Remarkable success of De humani encouraged noted anatomists to publish their own texts over the years. Such a cascading effect started an ongoing process of refining the text based presentation of anatomical details that eventually led to the emanation of Gray’s Anatomy, the masterpiece from Henry Gray. In this review article we have tried to revisit the journey from De humani to Gray’s Anatomy and have also highlighted on other anatomical texts that form important landmarks in this journey. The article attempts to focus on the rectification of Galenic errors, description of new discoveries in human anatomy, introduction of the concept of clinical anatomy, emergence of surgical anatomy and the advent of sectional anatomy. The article also put emphasis on the efforts to make anatomical illustrations used in texts more scientific and in tune with the printed matter. We noted with interest that luminary anatomists over the years have contributed in their own individual manner towards the development of text based anatomy and from cumulative perspective their visionary efforts have shaped the outlook of anatomical texts in present times.