http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Drug adsorption and anti-microbial activity of functionalized multiwalled carbon nanotubes
Saxena, Megha,Mittal, Disha,Boudh, Richa,Kumar, Kapinder,Verma, Anita K.,Saxena, Reena Techno-Press 2021 Advances in nano research Vol.11 No.6
Multiwalled carbon nanotubes (MWCNTs) were first oxidized (O-CNTs) to introduce carboxylic group and then further functionalized (F-CNTs) with m-phenylenediamine, which was confirmed by FTIR and SEM. It was used as an effective adsorbent for the adsorptive removal of diclofenac drug from water. Under optimum conditions of pH 6, stirring speed 600 rpm, the maximum adsorption capacity obtained was 532 mg g<sup>-1</sup> which is superior to the values reported in literature. The adsorption was quite rapid as 25 mg L<sup>-1</sup> drug solution was adsorbed in only 3 minutes of contact time with 10 mg of adsorbent dose. The adsorption kinetics and isotherms were studied using various models to evaluate the adsorption process. The results showed that the data best fit in kinetics pseudo-second order and Langmuir isotherm model. Furthermore, the oxidized and functionalized MWCNTs were applied on gram-negative Escherichia coli and gram-positive Staphylococcus aureus using agar disc diffusion assay to validate their anti-microbial activity. Results were unique as both oxidized and functionalized MWCNTs were equally active against both E. coli and S. aureus. The newly synthesized F-CNTs have great potential in water treatment, with their dual action of removing drug and pathogens from water, makes it potential applicant to save environment.
Systematic review of the effectiveness of homoeopathy in the treatment of autism spectrum disorder
Vibha Saxena,Gish Chacko,Udit Saxena 한국언어재활사협회 2021 Clinical Archives of Communication Disorders Vol.6 No.1
Purpose: Over the years there is a significant increase in Autism Spectrum Disorder (ASD), yet there is no standard medical treatment available for this population. Homoeopathy as reported in literature can prove to be a boon for ASD treatment as in homoeopathy patients are prescribed medicine based on specific symptoms in light of associated physical and mental aspect. A systematic review of literature was required to put together the reported information on the relation between homoeopathy and ASD. This work reviews all the related literature in-depth. Methods: Literature on the concerned issue was searched from databases like Scopus, PubMed, ScienceDirect, JASTOR, Google Scholar, PsycINFO (psychology and psychiatry literature), and ERIC (Education Resources Information Center). Results: In total, 19 published articles were found on the investigation of using homoeopathy in the treatment of ASD. Seventeen studies showed that homoeopathy can be effective in the treatment of ASD. Result of 1 study was inconclusive and 1 more study found homoeopathy to be not suitable in treating ASD. Conclusions: Most reports support the use of homoeopathy in the treatment of ASD. They describe that homoeopathy efficiently control ASD symptoms and also supplements other therapies used in the treatment of ASD. Few authors suggested otherwise too.
QuESt: a QoS-based energy efficient sensor routing protocol
Saxena, Navrati,Roy, Abhishek,Shin, Jitae John Wiley Sons, Ltd. 2009 WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Vol.9 No.3
<P>Rapid penetration of smart wireless devices and enormous growth of wireless communication technologies has already set the stage for deployment of wireless sensor networks (WSNs). While these small sensor nodes are often considered as the future of wireless communications, they also suffer from energy constraints. On the other hand, with increasing demand for real-time services in next generation wireless networks, quality-of-service (QoS)-based routing has emerged as an interesting research topic. Naturally offering some QoS-guarantee in sensor networks raises significant challenges. The network needs to cope up with battery-constraints, while providing precise QoS (end-to-end delay and bandwidth requirement) guarantee. More precisely, designing such QoS-protocols, optimizing multiple objectives, is computationally intractable. Based on the multi-objective genetic algorithm (MOGA), in this paper we propose a QoS-based energy-efficient sensor routing (QuESt) protocol that determines application-specific, near-optimal sensory-routes demand, by optimizing multiple QoS parameters, (end-to-end delay and bandwidth requirements) and energy consumption. Simulation results demonstrate that the proposed protocol is capable of discovering a set of QoS-based, near-optimal routes, even with imprecise network information. Copyright © 2007 John Wiley & Sons, Ltd.</P>
LOWER FORMATION RADICAL FOR NEAR RINGS
Saxena, P.K.,Bhandari, M.C. Department of Mathematics 1978 Kyungpook mathematical journal Vol.18 No.1
In [7) Scott has defined C-formation radical for a class C of near rings and has studied its porperties under chain conditions. A natural question that arises is: Does there exist a Lower C-Formation radical class L(M) containing a given class M of ideals of near rings in C? In this paper we answer this by giving. two constructions for L(M) and prove that prime radical is hereditary.
Polycrystalline Silicon Thin-Film Transistor Using Xe Flash-Lamp Annealing
Saxena, Saurabh,Dong Cheol Kim,Jeang Hun Park,Jin Jang IEEE 2010 IEEE electron device letters Vol.31 No.11
<P>We report a high-performance thin-film transistor (TFT) using polycrystalline silicon (poly-Si) by short-pulse Flash-lamp annealing of amorphous silicon. Large grains of average size of ~15 μm with wide branchlike grain boundaries were found in the poly-Si, and there was no amorphous phase inside. The fabricated p-channel poly-Si TFT on the grain exhibited field-effect mobility of 138 cm<SUP>2</SUP>/V · sec, a threshold voltage of -1.3 V, and an on/off current ratio of 10<SUP>8</SUP>.</P>
Authentication and Authorization Scheme for Various User Roles and Devices in Smart Grid
Saxena, Neetesh,Bong Jun Choi,Rongxing Lu IEEE 2016 IEEE transactions on information forensics and sec Vol.11 No.5
<P>The smart grid, as the next generation of the power grid, is characterized by employing many different types of intelligent devices, such as intelligent electronic devices located at substations, smart meters positioned in the home area network, and outdoor field equipment deployed in the fields. In addition, there are various users in the smart grid network, including customers, operators, maintenance personnel, and so on, who use these devices for various purposes. Therefore, a secure and efficient mutual authentication and authorization scheme is needed in the smart grid to prevent various insider and outsider attacks on many different devices. In this paper, we propose an authentication and authorization scheme for mitigating outsider and insider threats in the smart grid by verifying the user authorization and performing the user authentication together whenever a user accesses the devices. The proposed scheme computes each user role dynamically using an attribute-based access control and verifies the identity of the user together with the device. Security and performance analysis show that the proposed scheme resists various insider as well as outsider attacks, and is more efficient in terms of communication and computation costs in comparison with the existing schemes. The correctness of the proposed scheme is also proved using BAN-Logic and Proverif.</P>
Optimal Tracking Area Update in LTE Systems
SAXENA, Navrati,ROY, Abhishek,WON, Jeong-Jae The Institute of Electronics, Information and Comm 2010 IEICE TRANSACTIONS ON COMMUNICATIONS - Vol.93 No.8
<P>Continuous processing and servicing of a new incoming session in LTE systems demands optimal tracking of the mobile user. In this letter, an optimal, information-theoretic framework is developed for tracking area update for next-generation LTE cellular systems. Shannon's entropy is used to characterize the location uncertainty of mobile user. The framework captures users' mobility patterns online and performs profile-based paging for optimizing the tracking area update cost. Simulation results demonstrate reductions in both update and paging costs in comparison to existing LTE systems.</P>