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Amperometric hydrogen peroxide sensor based on the use of CoFe2O4 hollow nanostructures
Vasuki, K.,Babu, K. J.,Sheet, S.,Siva, G.,Kim, A. R.,Yoo, D. J.,kumar, G. G. Springer Science + Business Media 2017 Mikrochimica acta Vol.184 No.8
<P>The authors report on the preparation of a hollowstructured cobalt ferrite (CoFe2O4) nanocomposite for use in a non-enzymatic sensor for hydrogen peroxide ( H2O2). Silica (SiO2) nanoparticles were exploited as template for the deposition of Fe3O4/CoFe2O4 nanosheets, which was followed by the removal of SiO2 template under mild conditions. This leads to the formation of hollow-structured Fe3O4/CoFe2O4 interconnected nanosheets with cubic spinel structure of high crystallinity. The material was placed on a glassy carbon electrode where it acts as a viable sensor for non-enzymatic determination of H2O2. Operated at a potential of -0.45 V vs. Ag/AgCl in 0.1 M NaOH solution, the modified GCE has a sensitivity of 17 nA mu M-1 cm(-2), a linear response in the range of 10 to 1200 mu M H2O2 concentration range, and a 2.5 mu M detection limit. The sensor is reproducible and stable and was applied to the analysis of spiked urine samples, where it provided excellent recoveries.</P>
Nursing Care of Arteo Venous Fistula for the Patient Undergoing Hemodialysis
Vasuki, R,Kim, Jeongmi The Institute of Internet 2020 International Journal of Internet, Broadcasting an Vol.12 No.4
Purpose: This study aimed to review the recent scientific literature regarding nursing care of arteriovenous fistula (AVF) for the patients with Chronic Renal Failure (CRF) undergoing hemodialysis. Methods: An integrative review was conducted and articles were searched from Cochrane library, Medline, PubMed, Science direct and CINAHL databases by using the terms "nursing", 'Chronic Renal Failure', 'Haemodialysis', renal failure', 'or 'AV Fistula' nursing care', 'self-care'. The inclusion criteria were articles published in English in the year of 2015-2020 with availability of free full text. Reviewed data were carefully analyzed and charted regard to the nursing care of the patient with AVF. Results: 12 articles papers met the inclusion criteria. Three themes were derived from the data: (a) Intervention (b). Patient and nurse education (c) KPA Assessment of (Knowledge, Practice and Attitude) Conclusions: This review indicates the challenges that nursing care of AVF patients undergoing hemodialysis. The identified themes can be used in the development of more effective educational- programs. Future studies should focus on the development and evaluation of educational programs that include these selected themes.
On Certain New Modular Relations for the Rogers-Ramanujan type functions of order Twelve
K. R. Vasuki,P. S. Guruprasad 장전수학회 2010 Advanced Studies in Contemporary Mathematics Vol.20 No.3
In this paper, we define the Rogers-Ramanujan type functions M(q) and N(q) of order twelve and obtain some modular relations involving these identities, which are analogues to Ramanujan’s well known forty identities for Rogers-Ramanujan functions. Further, we establish certain color partition identities from them.
On certain continued fraction expansions for ratios of basic hypergeometric series
K. R. Vasuki,K. R. Rajanna 장전수학회 2007 Proceedings of the Jangjeon mathematical society Vol.10 No.2
In this paper, we establish three new continued fraction expansions for the ratios of the basic hypergeometric series 2'1 by employing four q-difference equations. As particular case of these, we obtain certain new continued fractions including the continued fractions for the quotient of Ramanujan-G¨ollnitz-Gordon function.
General Formulas for Evaluation of Singular Modulus of the Complete Elliptic Integral
K. R. Vasuki,G. Sharath,N. Bhaskar 장전수학회 2010 Advanced Studies in Contemporary Mathematics Vol.20 No.1
The complete elliptic integral of the first kind K(k) is defined for 0 < k < 1 by K(k) := π /2Ɵ=0dƟ/√1 − k2 sin2 ƟThe real number k is called the modulus of the elliptic integral. The complementary modulus is k' = √1 − k2 (0 < k' < 1). Let ⋋ be a positive integer. The equation K(k') = √K(k),defines a unique real number k(k') (0 < k' < 1) called the singular modulus of K(k). In this paper, we establish certain general formulas for evaluating k(λ), by employing Ramanujan’s modular equation.
On Certain Continued Fractions Related To 3ψ3 Basic Bilateral Hypergeometric Functions
K. R. Vasuki,G. Sharath,Abdulrawf A. A. Kahtan 장전수학회 2010 Advanced Studies in Contemporary Mathematics Vol.20 No.3
In this paper, we obtain several new continued fraction expansions for the ratios of the basic bilateral hypergeometric series 3ψ3 with its contigu-ous functions. Further, as special cases of these identities, we generate several classical and some new continued fraction expansions.
On certain Ramanujan's modular equations of degree 7
K. R. Vasuki,R. G. veeresha 장전수학회 2016 Advanced Studies in Contemporary Mathematics Vol.26 No.1
In this paper, we give alternative proofs of Ramanujan's modular equations of degree 7, by employing certain theta-function identities.
김정미,Vasuki R 한국인터넷방송통신학회 2019 Journal of Advanced Smart Convergence Vol.8 No.4
The purpose of this study was to examine the relationship between sleep disorders, job satisfaction, health promotion behavior, quality of life, turnover intention. And also to find the predicting factors on turnover intention of shift and non-shift nurses. A descriptive study design was used. Study subjects were 239 nurses worked as a shift (167) and non-shift (72) in two general hospitals in P city. Turnover Intent, Sleep disorders, Job satisfaction, practicing health promotion profile and quality of life scales were used to collect the data. Data were analyzed by descriptive statistics and Pearson's correlation coefficient for find the relationship between study variables. Stepwise multiple regressions used to find predicting factors of turnover intention with other variables. The shift group showed lower Job satisfaction, practice of health promotion behavior and intention of turnover than non-shift nurses. The most important predictive factors of turnover intention in of shift group was job satisfaction (β =-. 477, p <.001) and non-shift group was health promotion behavior (β =-. 295, p = .040) than other factors. Findings showed that turnover intention highly influenced by job satisfaction than health promoting behavior and quality of life. This study suggests organizational efforts to provide sufficient staffing and nurse managers should make more concentration to allot work schedule in order to avoid over load shift nurses and promote quality of client care.