http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이용필, Bramhe Sachin N, 김택남 배재대학교 공학연구소 2013 공학논문집 Vol.15 No.1
Zirconia has many excellent mechanical properties which has helped it gain attention as a dental material. Sol-gel method is universally accepted as the best method for the synthesis of zirconia. Here we have tried to synthesize zirconia by combining hydrothermal and sol-gel method. NaOH is added as the precipitating agent who forms salt in the reaction mixture which can be easily separated from the final solution. Zirconium and yttrium salts are used as precursors and PVA is used to separate the metal ions. Finally the zirconia powder obtained is calcined at 900oC for 2hrs. XRD analysis was done on the samples to confirm the crystal structure of the synthesized zirconia. SEM was taken to check the morphology of zirconia. Finally transparency of the synthesized zirconia was checked which shows that 10% PVA shows highest percentage of transparency among all the synthesized powder.
David Karamankodu Jacob,Hancock David Lawrence,Sachin K.,Gracy Gandhi R,Swathi R.S. 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1
Rhabdochaeta nigroapicalis David, Hancock and Sachin, sp. n., is described from Assam, NE India. A key to all species of Schistopterini and Eutretini recorded from India is provided and taxonomic notes on previously described species are included. DNA barcode sequences of Calloptera asteria (Schiner), Rhabdochaeta pulchella de Meijere, Rhabdochaeta nigroapicalis David, Hancock and Sachin, sp. n. and Rhochmopterum venustum (de Meijere) were obtained and reported. Phylogenetic analysis using 62 mtCOI sequences of Tephritinae revealed Schis topterini to be a monophyletic group and the new species closely related to Rhabdochaeta pulchella, justifying its placement in Rhabdochaeta de Meijere. http://zoobank.org/A97337B3-E2BD-460D-BA62-6D3D4A1A60A2
Multiscale Modeling of Dynamic Characteristics of Carbon Nanotube Reinforced Nanocomposites
Sachin O. Gajbhiye,S. P. Singh 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.7
A unique atomic structure of carbon nanotube unveils outstanding properties. This makes it potentially highly valued reinforcing material to strengthen composite materials. The methodology is established in this research paper to investigate the static and dynamic characteristics of the nanocomposites. Repol polypropylene H110MA is used as a matrix material along with the different percentages of single-walled carbon nanotubes (SWCNTs). A concept of representative volume element (RVE) is considered to study the various properties of the nanocomposite material. The carbon–carbon bond of nanotube is modeled using Tersoff–Brenner potential and represented by space frame element. The matrix material properties are tested in the laboratory which are further used to model it and represented by three-dimensional continuum elements. The interaction between nanotube and polymer matrix is modeled using "Lennard–Jones 6-12" potential represented by nonlinear spring elements. The effect of reinforcement, chirality, % volume of SWCNT, atomic vacancy defect and Stone–Wales defect on the properties of nanocomposite are investigated. To see the effect of reinforcement, the eigenvalues of the RVE are extracted for different boundary conditions. The viscoplastic behavior of the matrix material is considered and the rate-dependent characteristics of the nanocomposite are studied. The damping property of the nanocomposite material is also investigated based on the phase lag between stress and strain field by applying harmonic strain at different frequencies.
Sachin S. Salunkhe,Neela M. Bhatia,Jyoti D. Thorat,Prafulla B. Choudhari,Manish S. Bhatia 한국약제학회 2014 Journal of Pharmaceutical Investigation Vol.44 No.4
The objective of this study was to optimizeibuprofen loaded nanoemulsion by using a factorial designapproach. In the present study attempts have been made toformulate and evaluate nanoemulsion for topical deliveryof ibuprofen. Solvent precipitation technique was used fordevelopment of ibuprofen nanoemulsion. Miglyol 840 wasscreened as the oil phase due to a good solubilisationcapacity (0.197 ± 0.012 g/mL) for ibuprofen. On the basisof RHLB of an oil phase Labrasol and Triton X 100 wereused as surfactant and cosurfactant, respectively. The studyinvestigated the utility of 23 factorial design for optimizationprocess of nanoemulsion batches. Present modeldemonstrated the significance of factors such as drugconcentration (X1), anti-solvent volume (X2) and surfactantcosurfactant combination concentration (X3) on particlesize (Y1) and encapsulation efficiency (Y2). Optimizednanoemulsion showed better flux value (Jss), skin permeationcoefficient (Kp) as compared to plain ibuprofen gel. Drug deposition study revealed that optimized ibuprofennanoemulsion showed deposition of 26.13 ± 3.47 lg cm-2in comparison to the deposition of 16.50 ± 2.34 lg cm-2shown by plain ibuprofen loaded gel. While the antiinflammatorystudy has shown faster onset of action withthe nanoemulsion which was confirmed by 75 ± 1.27 %inhibition of inflammation at the end of 1 h and63.97 ± 1.71 % at the end of 24 h. The effect of drug wasenhanced by prepared nanoemulsion formulation andhence confirms the utility of nanoemulsion system as avehicle for better topical delivery of ibuprofen.
Semantic Interoperability Architecture for Smart Spaces
Sachin Bhardwaj,Tanir Ozcelebi,Johan J. Lukkien,Keon Myung Lee 한국지능시스템학회 2018 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.18 No.1
The advancements in the smart space research bring us closer and closer to a future, in which the living standards of people are greatly enhanced. Smart spaces are composed of heterogeneous networks of embedded devices that communicate, perform computations and actuate. From a system point of view, a smart space is a specific type of ubiquitous system. Like any ubiquitous system, a smart space is usually heterogeneous, i.e. it is made up of embedded devices with various hardware, software and communication platforms. There is need for information exchange and interoperability between these embedded devices and their services. However, embedded devices in a smart space vary in terms of their sensing, actuation and control capabilities, as well as their resources of processing, storage, and networking. For an interoperability solution, this paper proposes a semantic interoperability architecture for smart spaces. The description details of an ontology model and interoperability interactions between smart objects are explained. An example implementation of a heterogeneous smart lighting system as a smart space using the proposed semantic interoperability architecture is discussed.
Sachin Singh,A. K. Sharma,Pooja Lohia,D. K. Dwivedi 한국전기전자재료학회 2022 Transactions on Electrical and Electronic Material Vol.23 No.3
In this study, an angular interrogation technique has been used for modeling a highly sensitive surface plasmon resonance (SPR)based biosensor. The large surface area of the heterostructure of the blue phosphorene (BP/MoS 2 ) layer facilitates the biomolecules absorption. A four-layer Kretschmann model of the SPR biosensor containing the BP/MoS 2 heterostructure with a gold layer is proposed. Compared to the traditional gold fi lmbased SPR biosensors, the sensitivity of the proposed SPR biosensor has been signifi cantly improved. An enhanced sensitivity 224.57°/RIU has been achieved by optimizing the proposed structure with 50 nm thick gold layer and a monolayer of heterostructure BP/MoS 2 with a thickness of 0.75 nm. Moreover, the proposed BP/MoS 2 heterostructure off ers extremely small FWHM, high detection accuracy, and highquality factor parameters. The highest sensitivity of 252°/RIU was found with two-layers of BP/MoS 2 heterostructure confi guration. It is observed that, compared to previously reported sensitivity, the proposed SPR biosensor shows better results.
Sachin K. Verma,Shailendra Singh,Girish Wadhwa,Balwinder Raj 한국전기전자재료학회 2020 Transactions on Electrical and Electronic Material Vol.21 No.5
In this Paper, Dielectric Modulated Dopingless Double Gate Transistor (DM-DLDGTFET) device is proposed for the free label detection of the charged and neutral biomolecules. A charge-plasma principle is used for label-free detection of biosensors to reduce the processing complexity and cost of nanoscale products. Firstly, the simulations for the proposed device are carried using Atlas and diff erent electrical parameters are analyzed using the same. It is observed that the dielectric constant and diff erent biomolecule charges for example, protein, DNA, enzyme, cell and many more molecules aff ects the electrical characteristic of the device. The deposition of diff erent workfunction materials over silicon body will do the formation of p+ source and n+ drain region in the DM-DLDGTFET. In addition, by etching the segment of the gate oxide layer to the source end for sensing biomolecules, a nano gap cavity is embedded within the dielectric gate. When biomolecule get immobilized at cavity region, the electrostatic properties of device for example, drain current, I on /I off , subthreshold slope, average subthreshold slope, sensitivity get infl uenced. The energy band diagram and the device’s surface potential for both neutral and charged biomolecules are also discussed. For the validation of the proposed DL-TFET structure, the simulation results are calibrated with reported results and signifi cant improvement are observed in the proposed structure.