http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dinesh Bose,Aadhav Anantharamakrishnan,Devi K. S. Shalini,Krishnan Uma Maheswari 한국탄소학회 2022 Carbon Letters Vol.32 No.4
Nitrophenol sensors have garnered interest in pharmaceuticals, agriculture, environment safety and explosives. Various methods have been proposed to detect 4-nitrophenol, but nitrophenol isomers such as 2,4-dinitrophenol (DNP) and 2,4,6-trinitrophenol have been comparatively less studied. For the first time, the present work explores graphitic nanocarbon, i.e., carbon black (CB) interface for sensing of DNP. Two reduction potentials were noted at − 0.48 and − 0.64 V for o-NO2 and p-NO2 moieties, respectively, at CB/GCE. At the same time, bare GCE (glassy carbon electrode) shows a single reduction potential at − 0.7 V. The electrocatalytic effect and adsorption ability of the interface was studied from the DNP concentration effect. Scan rate and pH studies suggest that the CB acquires four electrons for NO2 reduction by the diffusion phenomenon. A broad detection range of 10–250 µM DNP with a very low detection limit of 0.13 (o-form) and 0.15 µM (p-form) was achieved using the CB interface. The real-time applicability of the fabricated sensor was evaluated using commercially available beverages with excellent recovery values. The stability, repeatability and reproducibility of the CB interface were successfully confirmed. Comparison of the sensing parameters of the developed sensor with those reported in literature reveals excellent detection limit and response time for the CB-interfaced DNP sensor, indicating its potential for environmental and commercial applications.
Wireless distributed computing: a survey of research challenges
Datla, Dinesh,Chen, X.,Tsou, T.,Raghunandan, S.,Hasan, S. M. S.,Reed, J. H.,Dietrich, C. B.,Bose, T.,Fette, B.,Kim, J. IEEE 2012 IEEE communications magazine Vol.50 No.1
<P>Recent advancements in radio technology provide great flexibility and enhanced capabilities in executing wireless services. One of these capabilities that can provide significant advantages over traditional approaches is the concept of collaborative computing in wireless networks. With collaborative radio nodes, multiple independent radio nodes operate together to form a wireless distributed computing (WDC) network with significantly increased performance, operating efficiency, and abilities over a single node. WDC exploits wireless connectivity to share processing- intensive tasks among multiple devices. The goals are to reduce per-node and network resource requirements, and enable complex applications not otherwise possible, e.g., image processing in a network of small form factor radio nodes. As discussed in this article, WDC research aims to quantify the benefits of distributed processing over local processing, extend traditional distributed computing (DC) approaches to allow operation in dynamic radio environments, and meet design and implementation challenges unique to WDC with the help of recently available enabling technologies, such as software radios and cognitive radios.</P>
Vilian, A. T. Ezhil,Dinesh, Bose,Rethinasabapathy, Muruganantham,Hwang, Seung-Kyu,Jin, Chang-Soo,Huh, Yun Suk,Han, Young-Kyu The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.29
<P>Reduced graphene oxide (RGO) incorporated onto metal-organic framework (MOF)-derived Co3O4 hexagons is prepared <I>via</I> a hydrothermal route for supercapacitor and glucose sensor applications. Various analysis techniques demonstrate that the Co3O4 hexagons were uniformly spread over the thin graphene sheets to assist the electron accessibility of the electrode materials. Under optimized conditions, using 0.1 M KOH electrolyte at a current density of 4 A g<SUP>−1</SUP>, a specific capacitance value of 1300 F g<SUP>−1</SUP> is obtained. The fabricated asymmetric supercapacitor cycled reversibly and exhibits high energy and power density values of 65.8 W h kg<SUP>−1</SUP> and 2048 W kg<SUP>−1</SUP>, respectively, over the voltage range of −0.1 V to 0.4 V. The asymmetric supercapacitor shows 80.5% capacitance retention even after 5000 cycles at a current density of 4 A g<SUP>−1</SUP>, which indicates its high cycling stability in view of the fact that it is binder-free. Furthermore, the RGO-Co3O4 hexagon-modified electrode was optimized to realize the reliable amperometric determination of glucose concentration with a very low detection limit and excellent sensitivity value of 0.4 μM and 1.315 mA mM<SUP>−1</SUP> cm<SUP>−2</SUP>, respectively. All of these remarkable performance indicators suggest that RGO-Co3O4 is a promising electrode material for next-generation energy storage devices and electrochemical sensors.</P>