Non Existence of 𝒫ℛ-semi-slant Warped Product Submanifolds in a Para-Kähler Manifold

Sharma, Anil Department of Mathematics 2020 Kyungpook mathematical journal Vol.60 No.1

In this paper, we prove that there are no non-trivial 𝒫ℛ-semi-slant warped product submanifolds with proper slant coefficients in para-Kähler manifolds ${\bar{M}}$. We also present a numerical example that illustrates the existence of a 𝒫ℛ-warped product submanifold in ${\bar{M}}$.

Design and Performance Study of a Hot Water Driven 5 TR Capacity Absorption Cooling System

Anil Sharma,Bimal Kumar Mishra,Abhinav Dinesh,Ashok Misra 보안공학연구지원센터 2014 International Journal of u- and e- Service, Scienc Vol.7 No.6

Use of high grade electrical energy, generated from fossil fuels, for cooling has increased environmental concerns like global warming and ozone layer depletion. Hence, there is a need to reduce dependence on them and explore potential environmental friendly options. In this aspect, vapor absorption system has scope of utilizing low grade energy source i.e. hot water from solar panel, to generate cooling effect and are environment friendly as no chloro-floro-carbons are used. The most usual combination of absorber refrigerant pair in such system is lithium bromide water (LiBr–H2O), where water vapor is the refrigerant. In present work, a hot water driven, single stage, absorption cooling system, using a lithium bromide water solution, is analyzed for determining the effect of various parameters on coefficient of performance (COP). Four basic stages in the absorption cycle are generation, condensation, evaporation and absorption with ideally no moving part. A configuration of theses four stages, having 5 TR cooling capacity is determined and examined for the variation in COP corresponds to the change in pressure and concentration. The pressure parameter is varied in condenser and evaporator, resulting graph shows that the increment in pressure of evaporator increases the COP whereas increment of pressure in condenser decreases the COP. At lower inlet concentration of LiBr solution to the absorber gives increment in COP.

Prevalence of Phytophthora Blight of Pigeonpea in the Deccan Plateau of India

Sharma, M.,Pande, S.,Pathak, M.,Rao, J. Narayana,Kumar, P. Anil,Reddy, D. Madhusudan,Benagi, V.I.,Mahalinga, D.M.,Zhote, K.K.,Karanjkar, P.N.,Eksinghe, B.S. The Korean Society of Plant Pathology 2006 Plant Pathology Journal Vol.22 No.4

Phytophthora blight(PB), caused by Phytophthora drechsleri f. sp. cajani is the third potentially important disease of pigeonpea in the Deccan Plateau(DP) of India after wilt and sterility mosaic. In the rainy-season of 2005, an outbreak of PB was seen throughout DP. To quantify the incidence and spread of the disease, a systematic survey was conducted in the major pigeonpea growing regions of DP during the crop season 2005. Attempts were made to determine the effect of cropping systems on the PB development and identify resistant cultivars, if any, grown by farmers and on research farms. Widespread incidence of PB was recorded on improved, and or local cultivars grown in different intercropping systems. Majority of improved cultivars grown at research farms were found susceptible to PB(>10% disease incidence). Pigeonpea intercropped with groundnut, black gram and coriander had less disease incidence(${\leq}10%$). Three wilt and SM resistant pigeonpea cultivars KPL 96053, ICPL 99044, and ICPL 93179 were found resistant(<10%) to PB as well. However, their resistance to PB needs confirmation under optimum disease development environments.

Study of Temperature Effect on Conductivity Distribution in Monolayer Graphene Using Electrical Resistance Tomography

Anil Kumar Khambampati,Felipe Alberto Solano Sanchez,Sunam Kumar Sharma,Kyung Youn Kim 대한전자공학회 2022 대한전자공학회 학술대회 Vol.2022 No.6

Fractal to monolayer growth of AgCl and Ag/AgCl nanoparticles on vanadium oxides (VOx) for visible-light photocatalysis

Sharma, Mukesh,Das, Biraj,Sarmah, Jugal Charan,Hazarika, Anil,Deka, Biplab K.,Park, Young-Bin,Bania, Kusum K. The Royal Society of Chemistry 2017 Journal of Materials Chemistry A Vol.5 No.32

<P>A facile and simple methodology was adopted for the trapping of highly crystalline AgCl and Ag/AgCl nanoparticles (NPs) into the interlayer spacings of vanadium oxides (VOx). Self-organization of AgCl and Ag/AgCl-NPs on VOxwas found to be governed by the nature of the dicarboxylic acids used during the synthesis of the nanocomposites. A “fractal-like” morphology of the AgCl@VOxnanocomposite was achieved in the presence of<I>cis</I>-1,2 cyclohexanedicarboxylic acid. Heating of the AgCl@VOxnanocomposite above 68 °C resulted in the growth of polydispersed and ultrafine (3-4 nm) Ag/AgCl-NPs and its self-organization into monolayer formation on a partly crystalline VOxmatrix. Change in the conformation of the dicarboxylic acid to the<I>trans</I>-isomer resulted in the formation of a ‘rod-like’ structure of Ag/AgCl-NPs on a highly crystalline VOxmatrix. The band gaps of the nanocomposites were within the range of 1.8 to 2.9 eV. Because of such a low band gap, the synthesized nanocomposites were found to be highly active toward the photooxidation of methylene (MB) and methyl orange (MO) under sunlight.</P>

An Identity-based Ring Signcryption Scheme: Evaluation for Wireless Sensor Networks

Sharma, Gaurav,Bala, Suman,Verma, Anil K. The Institute of Electronics and Information Engin 2013 IEIE Transactions on Smart Processing & Computing Vol.2 No.2

Wireless Sensor Networks consist of small, inexpensive, low-powered sensor nodes that communicate with each other. To achieve a low communication cost in a resource constrained network, a novel concept of signcryption has been applied for secure communication. Signcryption enables a user to perform a digital signature for providing authenticity and public key encryption for providing message confidentiality simultaneously in a single logical step with a lower cost than that of the sign-then-encrypt approach. Ring signcryption maintains the signer's privacy, which is lacking in normal signcryption schemes. Signcryption can provide confidentiality and authenticity without revealing the user's identity of the ring. This paper presents the security notions and an evaluation of an ID-based ring signcryption scheme for wireless sensor networks. The scheme has been proven to be better than the existing schemes. The proposed scheme was found to be secure against adaptive chosen ciphertext ring attacks (IND-IDRSC-CCA2) and secure against an existential forgery for adaptive chosen message attacks (EF-IDRSC-ACMA). The proposed scheme was found to be more efficient than scheme for Wireless Sensor Networks reported by Qi. et al. based on the running time and energy consumption.

Temperature and Salt-Dependent Dielectric Properties of Blend Solid Polymer Electrolyte Complexed with LiBOB

Anil Arya,Achchhe Lal Sharma 한국고분자학회 2019 Macromolecular Research Vol.27 No.4

In the present paper, the temperature and salt-dependent dielectric properties of poly(ethylene oxide) (PEO) and poly(vinyl pyrrolidone) (PVP) blend matrix complexed with LiBOB are investigated in the frequency range 1 Hz to 1 MHz and temperature range 40 oC to 100 oC (@10 oC). The real and imaginary part of the complex permittivity, complex conductivity have been simulated in the whole frequency window and the various fitted parameters were evaluated respectively. The estimated value of the dielectric constant and the ac conductivity increases with the increase of temperature. The lowering of relaxation time and hopping length is observed with the salt addition that is in correlation with the complex conductivity results. The modulus formalism was used to analyze the recorded dielectric data. The dc conductivity, hopping frequency, and segmental motion are strongly coupled with each other as evidenced by the Debye-Stoke-Einstein (DSE) plot. An interaction mechanism has also been proposed to explore the effect of temperature on the hopping length, relaxation time, hopping potential barrier and the segmental motion of the polymer chain

Optical dating of late Quaternary carbonate sequences of Saurashtra, western India

Sharma, Komal,Bhatt, Nilesh,Shukla, Anil Dutt,Cheong, Dae-Kyo,Singhvi, Ashok Kumar Cambridge University Press 2017 Quaternary research Vol.87 No.1

<B>Abstract</B><P>Bioclastic carbonate deposits that formed because of a combination of nearshore marine, fluvial, and aeolian processes, occur along the Saurashtra coast and in the adjacent interior regions of western India. Whether these carbonates formed by marine or aeolian processes has been debated for many decades. The presence of these deposits inland poses questions as to whether they are climate controlled or attributable to postdepositional tectonic uplift. In particular, the debate centres on chronologic issues including (1) appropriate sampling strategies and (2) the use of <SUP>230</SUP>Th/<SUP>234</SUP>U and <SUP>14</SUP>C ages on the bulk carbonates. Using traces (<1%) of quartz grains trapped in carbonate matrices, optically stimulated luminescence (OSL) dating of quartz grains, deposited along with the carbonate grains, provides ages for the most recent deposition events. The OSL ages range from >165 to 44 ka for the shell limestones, 75-17 ka for the fluvially reworked sheet deposits, and 80-11 ka for miliolites deposited by aeolian processes. These are younger than the <SUP>230</SUP>Th/<SUP>234</SUP>U and <SUP>14</SUP>C ages and suggest that the inland carbonate deposits were reworked from older carbonate sediments that were transported during more arid phases.</P>

Room temperature synthesis of nanostructured mixed-ordered-vacancy compounds (OVCs) and chalcopyrite CuInSe₂ (CIS) thin films in alkaline chemical bath

Sharma, Ramphal,Mane, Rajaram S,Ghule, Gangri Cai Anil,Ham, Duk-Ho,Min, Sun-Ki,Lee, Seung-Eon,Han, Sung-Hwan Institute of Physics [etc.] 2009 Journal of Physics. D, Applied Physics Vol.42 No.5

<P>Room temperature synthesis of ordered-vacancy-compounds (OVCs) and copper indium diselenide (CuInSe<SUB>2</SUB>, CIS) by cation and anion exchange reactions of solid CdS thin films with CIS ionic solution in an alkaline chemical bath is reported. The growth parameters such as pH, deposition time and concentration of the solutions were optimized to achieve uniform thin films. Nanostructured CdS thin films (150 nm thick) prepared by chemical bath deposition are used for the deposition of OVC and CIS thin films. The ion exchange reaction between the CdS thin film and the CIS ionic solutions transforms the yellow colour CdS film into faint black, indicating the formation of OVC and CIS film. The resultant films were annealed in air at 200 °C for 1 h and further subjected to characterization using the x-ray diffraction, transmission electron microscopy, energy dispersive x-ray analysis, x-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy, optical absorption and electrical measurement techniques. The OVC and CuIn<SUB>3</SUB>Se<SUB>5</SUB> nanodomains are observed in chalcopyrite CIS thin films and these films have nanostructured morphology onto amorphous/nanocrystalline phase of CdS. The OVC–CIS films are p-type with a band gap energy of 1.453 eV.</P>

An Overview on Taxol Production Technology and Its Applications as Anticancer Agent

Aparajita Sharma,BHATIA SHASHI KANT,Aditya Banyal,Ishita Chanana,Anil Kumar,Duni Chand,Saurabh Kulshrestha,Pradeep Kumar 한국생물공학회 2022 Biotechnology and Bioprocess Engineering Vol.27 No.5

Cancer is undeniably a major health risk factor that is growing rapidly globally despite promising medicinal and pharmaceutical development. Treatment of cancer remains an issue due to financial constrains in most of the developing countries. The majority of todayʼs medicines are derived from medicinal plants, as we all know. Taxol is such a plant-based chemotherapeutic agent which has blown the anticancer research field. The extinction of Taxus spp., which is the main natural source of taxol synthesis, required the development of novel alternative approaches in the oncology field. Many novel discoveries have been in trend in which endophytic microbial fermentation process is more focused as this area is cost-efficacious, less time consumable, and eco-friendly. Endophytes are one of another alternative approach for the taxol production, preserving the natural resources of Taxus plants worldwide. Endophytic microorganisms can be exploited in the taxol industry because most of the endophytic microbes have yet to be explored for the eco-friendly and economical production of this wonder drug. The aim of this review article is to cover everything from the discovery of taxol through the development of new natural resource-based biotechnology techniques. Furthermore, the current review has emphasised the use of taxol in fields other than anti-cancer properties, as well as pointing to some future opportunities.