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Nil Clean Graphs of Rings

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Algebra Colloquium 2017年第3期24卷 481-492页

作者： dhiren kumar Basnet Jayanta Bhattacharyya Department of Mathematical Sciences Tezpur University Napaazn Tezpur-784028 Assam India

In this article, we define the nil clean graph of a ring R. The vertex set is the ring R, and two ring elements a and b are adjacent if and only if a ＋ b is nil clean in R. Graph theoretic properties like the girth, ... 详细信息

关键词： nil clean ring weak nil clean ring nil clean graph

Right versus left fully robotic live donor nephrectomy and open kidney transplantation:Does the laterality of the donor kidney really matter?

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Asian Journal of Urology 2023年第4期10卷 453-460页

作者： Brianna Ruch Deki Tsering Chandra Bhati dhiren kumar Muhammad Saeed Seung Duk Lee Aamir Khan Daisuke Imai David Bruno Marlon Levy Adrian Cotterell Amit Sharma Hume-Lee Transplant Center Virginia Commonwealth UniversityRichmondVAUSA Division of Transplant Surgery University of MarylandBaltimoreMDUSA

Objective Robotic-assisted live donor nephrectomy(LDN)is being gradually adopted across transplant *** left donor kidney is preferred over right due to anatomical factors and ease of *** aimed to study donor and recipient outcomes after robotic procurement and subsequent open implantation of right and left *** All fully robotic LDNs and their corresponding open kidney transplants performed at our center between February 2016 and December 2021 were retrospectively *** Out of 196 robotic LDN(49[right]vs.147[left]),10(5.1%)donors had intra-operative events(6.1%[right]vs.4.8%[left],p=0.71).None of the LDN required conversion to open *** operative times were comparable for the two ***(13.3%)was the most common post-operative *** was no mortality in either LDN ***,we report our outcomes on 156 recipients(39 right and 117 left allografts)excluding robotic implants,exports,and pediatric *** were no significant differences between right and left kidney recipients with respect to 1-year post-transplant patient survival(100.0%vs.98.1%,p=0.45)or graft survival(93.9%vs.97.1%,p=0.11),or delayed graft function(7.7%vs.5.1%,p=0.55).Conclusion Non-hand-assisted robotic live donor nephrectomies can be safely performed with excellent *** LDN was not associated with higher incidence of complications compared to left *** implantation of robotically procured right renal allografts was not associated with higher risk of recipient complications.

关键词： Robotics Laparoscopy Donor nephrectomy Complication Renal transplant Outcome

An efficient technique for solving fractional-order diffusion equations arising in oil pollution

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Journal of Ocean Engineering and Science 2023年第3期8卷 217-225页

作者： Hardik Patel Trushit Patel dhiren Pandit Department of Mathematics Uka Tarsadia UniversityBardoliGujaratIndia Computer Science University of the PeoplePasadenaCA 91101United States Department of Mathematics and Humanities Nirma UniversityAhmedabadIndia

In this article,non-linear time-fractional diffusion equations are considered to describe oil pollution in the *** latest technique,fractional reduced differential transform method(FRDTM),is used to ac-quire approximate solutions of the time fractional-order diffusion equation and two cases of Allen-Cahn *** acquired results are collated with the exact solutions and other results from literature for integer-orderα,which reveal that the proposed method is ***,FRDTM can be employed to obtain solutions for different types of nonlinear fractional-order IVPs arising in engineering and science.

关键词： FRDTM Time-fractional nonlinear partial differential equation Diffusion equation Allen-Cahn(AC)equation Parabolic equations

Structural and photoluminescence properties of terbium-doped zinc oxide nanoparticles

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Chinese Physics B 2014年第5期23卷 607-611页

作者： Ningthoujam Surajkumar Singh Shougaijam Dorendrajit Singh Sanoujam dhiren Meetei Department of Physics Manipur UniversityCanchipur Department of Physics Pachhunga University CollegeCollege Veng

We present in this paper a study of the structural and photoluminescence （PL） properties of terbium （Tb） doped zinc oxide （ZnO） nanoparticles synthesized by a simple low temperature chemical precipitation method, using zinc acetate and terbium nitrate in an isopropanol medium with diethanolamine （DEA） as the capping agent at 60 ℃. The as-prepared samples were heat treated and the PL of the annealed samples were studied. The prepared nanoparticles were characterized with X-ray diffraction （XRD）. The XRD patterns show the pattern of typical ZnO nanoparticles and correspond with the standard XRD pattern given by JCPDS card No. 36-1451, showing the hexagonal phase structure. The PL intensity was enhanced due to Tb^3＋ doping, and it decreased at higher concentrations of Tb^3＋ doping after reaching a certain optimum concentration. The PL spectra of Tb^3＋ doped samples exhibited blue, bluish green, and green emissions at 460 nm （5^D3 - 7^F3）, 484 nm （5^D4 - 7^F6）, and 530 nm （5^D4 - 7^F5）, respectively, which were more intense than the emissions for the undoped ZnO sample. Based on the results, an energy level schematic diagram was proposed to explain the possible electron transition processes.

关键词： zinc oxide nanoparticles photoluminescence chemical precipitation

Origin and geochemical characterization of the glauconites in the Upper Cretaceous Lameta Formation, Narmada Basin, central India

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Journal of Palaeogeography 2018年第2期7卷 99-116页

作者： Udita Bansal Santanu Banerjee dhiren K.Ruidas Kanchan Pande Department of Earth Sciences Indian Institute of Technology Bombay

This study presents geochemical characteristics of glauconites in estuarine deposits within the Maastrichtian Lameta Formation in central India. Resting conformably over the Bagh Group, the Lameta Formation consists of ~4-5 m thick arenaceous, argillaceous and calcareous green sandstones underlying the Deccan Traps. The sandstone is friable, medium-to coarse-grained, well-sorted and thoroughly crossstratified, and contains marine fossils. Detailed petrography, spectroscopy and mineral chemistry indicates unique chemical composition of glauconite with high KO, MgO, AlOand moderate TFeO. Glauconite is formed by the replacement of K-feldspars, initially as stringers in the cleavages and fractures of feldspars. Incipient glauconite subsequently evolves fully, appearing as pellets. Fully-evolved glauconite pellets often leave tiny relics of K-feldspar. XRD exhibits characteristic peak of 10A from basal(001)reflection of glauconite, indicating the "evolved" character. The KO content of glauconites in the Lameta Formation varies from 5.51% to 8.29%, corroborating the "evolved" to "highly-evolved" maturation *** TFeOcontent of glauconite varies from 12.56% to 18.90%. The PASS-normalized-REE patterns of glauconite exhibit a "hat-shape" confirming the authigenic origin of glauconites. The slightly-negative to slightly-positive Ce anomaly value and the moderate TFeOcontent of glauconite agree well with a suboxic,estuarine condition. The replacement of K-feldspar by the glauconite contributes towards the high KO content. Compositional evolution of glauconites in the Lameta Formation is similar to those observed in many Precambrian sedimentary sequences.

关键词： Glauconite Estuary Mineral chemistry Cerium anomaly Redox condition Lameta Formation Narmada Basin

On Generalized Non-commuting Graph of a Finite Ring

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Algebra Colloquium 2018年第1期25卷 149-160页

作者： Jutirekha Dutta dhiren K. Basnet Rajat K. Nath Department of Mathematical Sciences Tezpur University Napaam-784028 Sonitpur Assam India

让的 S 和 K 是有限戒指 R 的二 subrings。然后 subrings S 的概括的非变换的图， R 的 K ，由 S ， K ,是集合是其顶点的一张简单的图( SK )\( CK CS (K))，并且在哪儿二个不同顶点一， b 是邻近的如果并且仅当作为或 bS 和父亲。... 详细信息

让的 S 和 K 是有限戒指 R 的二 subrings。然后 subrings S 的概括的非变换的图， R 的 K ，由 S ， K ,是集合是其顶点的一张简单的图( SK )\( CK CS (K))，并且在哪儿二个不同顶点一， b 是邻近的如果并且仅当作为或 bS 和父亲。我们决定直径，尺寸和为 S， K 。在 S， K 和 Pr (S， K ) 也被获得。进一步，在二枚有限戒指之间的 -isoclinism 被定义，并且我们证明二等斜的对的概括的非变换的图在一些条件下面是同形的。

关键词：戒指顶点集合直径

在海上航运中用于位置感知管理和控制系统的可重用C++类的开发(英文)

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Journal of Marine Science and Application 2012年第4期11卷 504-510页

作者： dhiren Dave Sanjay Nalbalwar Ashok Ghatol Department of Electronics & Telecommunication Engineering Dr. Babasaheb Ambedkar Technological University

Location aware management and location based automation are fast upcoming technologies which are facilitated by availability of reliable, accurate, and cheap global positioning systems and location based services. This paper discusses the development of C++ classes, which may be used for development of software for location aware management and control, specifically in merchant shipping, so as to provide improved safety, increased automation, prevention of pollution and reducing the work burden of the crew. The GPS is used in conjunction with the regionally accessible nested global shorelines (RANGS) dataset for this purpose. The design of two main C++ classes named CShorelines and CGPSInput have been discussed. A control system mandatory on all oil-tankers above 150 GRT (and few other vessels) called ODMCS has been made location aware using the novel software developed and the results obtained have been critically examined and presented.

关键词： GPS Location Aware Control ODMCS RANGS

Relativity of Speed of Light with Speed of Universe Expansion

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Journal of Modern Physics 2014年第14期5卷 1332-1339页

作者： dhiren Sampat Mumbai University Mumbai India

Theory of “Relativity of speed of light with speed of universe expansion” explains relation of speed of light with speed of universe expansion. This theory provides an evidence that the time cannot be relative as stated by Theory of General Relativity. Theory of Special Relativity and Theory of General Relativity were based on two fundamental propositions i.e. constancy of speed of light and independence of physical laws (especially the constancy of speed of light) from the choice of inertial system. However, postulate of these theories is not correct. Theory of “Relativity of speed of light with speed of universe expansion” answers fundamental propositions i.e. constancy of speed of light and independence of physical laws in logical manner. This theory also explains real reason behind E = mc2.

关键词： Speed of Light Theory of General Relativity Theory of Special Relativity E = mc2

A Quantitative Analysis of Collision Resolution Protocol for Wireless Sensor Network

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Journal of Software Engineering and Applications 2015年第8期8卷 361-371页

作者： Reema Patel dhiren Patel Computer Engineering Department NIT Surat India

In this paper, we present formal analysis of 2CS-WSN collision resolution protocol for wireless sensor networks using probabilistic model checking. The 2CS-WSN protocol is designed to be used during the contention phase of IEEE 802.15.4. In previous work on 2CS-WSN analysis, authors formalized protocol description at abstract level by defining counters to represent number of nodes in specific local state. On abstract model, the properties specifying individual node behavior cannot be analyzed. We formalize collision resolution protocol as a Markov Decision Process to express each node behavior and perform quantitative analysis using probabilistic model checker PRISM. The identical nodes induce symmetry in the reachable state space which leads to redundant search over equivalent areas of the state space during model checking. We use “ExplicitPRISMSymm” on-the-fly symmetry reduction approach to prevent the state space explosion and thus accommodate large number of nodes for analysis.

关键词： Wireless Sensor Network Collision Resolution Protocol Probabilistic Model Checking Symmetry Reduction