检索结果-南通市图书馆

Effect of benzaldehyde on the electrodeposition and corrosion properties of Ni–W alloys

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2015年第10期22卷 1060-1066页

作者： U.pramod kumar C.Joseph Kennady Department of Chemistry Karunya Institute of Technology and SciencesKarunya NagarCoimbatore 641114Tamil NaduIndia

The effect of different concentrations of benzaldehyde on the electrodeposition of Ni–W alloy coatings on a mild steel substrate from a citrate electrolyte was investigated in this study. The electrolytic alkaline bath(p H 8.0) contained stoichiometric amounts of nickel sulfate, sodium tungstate, and trisodium citrate as precursors. The corrosion resistance of the Ni–W-alloy-coated specimens in 0.2 mol/L H2SO4 was studied using various electrochemical techniques. Tafel polarization studies reveal that the alloy coatings obtained from the bath containing 50 ppm benzaldehyde exhibit a protection efficiency of 95.33%. The corrosion rate also decreases by 21.5 times compared with that of the blank. A higher charge-transfer resistance of 1159.40 ?·cm2 and a lower double-layer capacitance of 29.4 μF·cm-2 further confirm the better corrosion resistance of the alloy coating. X-ray diffraction studies reveal that the deposits on the mild steel surface are consisted of nanocrystals. A lower surface roughness value(Rmax) of the deposits is confirmed by atomic force microscopy.

关键词： nickel–tungsten alloys benzaldehyde electrodeposit

Approximate analytical solution of fractional order biochemical reaction model and its stability analysis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2019年第5期12卷 241-261页

作者： Ved Prakash dubey Rajnesh kumar Devendra kumar Faculty of Mathematical and Statistical Sciences Shri Ramswaroop Memorial University Lucknow-Deva Road Uttar Pradesh-225003India Department of Mathematics University of Rajasthan Jaipur-302004RajasthanIndia

Approximate analytical solution of the system of coupled nonlinear Ordinary Differential Equations (ODEs) of a biochemical reaction model is much relevant due to its practical significance to *** this paper,an effective and powerful mathematical technique,*** homotopy analysis transform method (FHATM),is employed to get the numerical solutions of biochemical reaction model with time fractional *** adopted scheme is the beautiful copulation of homotopy analysis technique and Laplace transform *** paper shows that the adopted scheme is quite easy as well as computationally attractive in the context of a solution *** Caputo-type fractional derivatives are considered in the present *** results of the probability density functions of the time fractional biochemical reaction model are computed for miscellaneous fractional Brownian motions as well as for classical motion and are presented *** time fractional biochemical reaction model with respect to stability analysis for various values of fractional order q is also *** the context of stability discussion,we have used the fractional Routh-Hurwitz stability criterion to establish the local stability of the biochemical reaction model of fractional order.

关键词： Biochemical reaction model FHATM Laplace transform homotopy stability analysis fractional order

Numerical solution of time-fractional three-species food chain model arising in the realm of mathematical ecology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2020年第2期13卷 53-74页

作者： Ved Prakash dubey Rajnesh kumar Devendra kumar Faculty of Mathematical and Statistical Sciences Shri RamswaroopMemorial University Lucknow-Deva Road Barabanki 225003Uttar PradeshIndia Department of Mathematics University of Rajasthan Jaipur 302004RajasthanIndia

T'his research paper implements the fractional homotopy analysis transform technique to compute the approximate analytical solution of the nonlinear three-species food chain model with time-fractional *** offered technique is a fantastic blend of homotopy analysis method(HAM)and Laplace transform(LT)operator and has been used fruitfully in the numerical computation of various fractional differential equations(FDEs).This paper involves the fractional derivatives of Caputo *** numerical solutions of this selected fractional-order food chain model are evaluated by making use of the associated initial *** is revealed by the adopting procedure that the more desirable estimation of the solution can be easily acquired through the calculation of some number of iteration terms only-a fact which authenticates the easiness and soundness of the suggested hybrid *** variations of fractional order of time derivative on the solutions for different specific cases have been depicted through graphical *** outcomes demonstrated through the graphs expound that the adopted scheme is very fantastic and accurate.

关键词： Three-species food chain model homotopy analysis transform method Laplace transform fractional order FDEs

Epidemiology of lung cancer and approaches for its prediction:a systematic review and analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Cancer 2016年第9期35卷 455-467页

作者： Ashutosh kumar dubey Umesh Gupta Sonal Jain Institute of Engineering and Technology JK Lakshmipat UniversityNear

Background: Owing to the use of tobacco and the consumption of alcohol and adulterated food, worldwide cancer incidence is increasing at an alarming and frightening rate. Since the last decade of the twentieth century, lung cancer has been the most common cancer type. This study aimed to determine the global status of lung cancer and to evaluate the use of computational methods in the early detection of lung ***: We used lung cancer data from the United Kingdom(UK), the United States(US), India, and Egypt. For statistical analysis, we used incidence and mortality as well as survival rates to better understand the critical state of lung ***: In the UK and the US, we found a significant decrease in lung cancer mortalities in the period of 1990–2014, whereas, in India and Egypt, such a decrease was not much promising. Additionally, we observed that, in the UK and the US, the survival rates of women with lung cancer were higher than those of men. We observed that the data mining and evolutionary algorithms were efficient in lung cancer ***: Our findings provide an inclusive understanding of the incidences, mortalities, and survival rates of lung cancer in the UK, the US, India, and Egypt. The combined use of data mining and evolutionary algorithm can be efficient in lung cancer detection.

关键词：肺癌流行病学系统预测早期检测临界状态进化算法数据挖掘

An experimental study for optimization of high range water reducing superplasticizer in self compacting concrete

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2013年第1期7卷 62-71页

作者： Rahul dubey Pardeep kumar Department of Civil Engineering National Institute of TechnologyHamirpur 177005India

Concrete is extensively used construction material in the infrastructure development *** increase in technical knowhow,the need of research for high performance concretes such as self-compacting concrete(SCC)has increased in the last *** adaptability of SCC is due to its fluidic behavior in fresh ***,to develop SCC using indigenous materials,the lack of standardized mix design procedures is the biggest *** with the advent of chemical admixtures,it is possible to achieve concrete with high fluidity,but at the same time durability issues require more *** have these fresh state properties SCC mixes are typically designed with high powder contents,and chemical *** and optimization of these materials is a key issue in the mix design of *** paper focuses mainly on experimental study to optimize dosages of superplasticizer for mortar of SCC and then in concrete mixture itself.

关键词： self-compacting concrete(SCC) fresh properties superplasticizer optimization compressive strength

Medical Data Clustering and Classification Using TLBO and Machine Learning Algorithms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第3期70卷 4523-4543页

作者： Ashutosh kumar dubey Umesh Gupta Sonal Jain Chitkara University Institute of Engineering and Technology Chitkara UniversityPunjabIndia Institute of Engineering and Technology JK Lakshmipat UniversityJaipurIndia

This study aims to empirically analyze teaching-learning-based optimization(TLBO)and machine learning algorithms using k-means and fuzzy c-means(FCM)algorithms for their individual performance evaluation in terms of clustering and *** the first phase,the clustering(k-means and FCM)algorithms were employed independently and the clustering accuracy was evaluated using different *** the second phase,the non-clustered data obtained from the first phase were preprocessed with *** was performed using k-means(TLBO-KM)and FCM(TLBO-FCM)(TLBO-KM/FCM)*** objective function was determined by considering both minimization and maximization ***-clustered data obtained from the first phase were further utilized and fed as input for threshold *** benchmark datasets were considered from theUniversity of California,Irvine(UCI)Machine Learning Repository for comparative study and *** are breast cancer Wisconsin(BCW),Pima Indians Diabetes,Heart-Statlog,Hepatitis,and Cleveland Heart Disease *** combined average accuracy obtained collectively is approximately 99.4%in case of TLBO-KM and 98.6%in case of *** approach is also capable of finding the dominating *** findings indicate that TLBO-KM/FCM,considering different computational measures,perform well on the non-clustered data where k-means and FCM,if employed independently,fail to provide significant *** different feature sets,the TLBO-KM/FCM and SVM(GS)clearly outperformed all other classifiers in terms of sensitivity,specificity and ***/FCM attained the highest average sensitivity(98.7%),highest average specificity(98.4%)and highest average accuracy(99.4%)for 10-fold cross validation with different test data.

关键词： K-means FCM TLBO TLBO-KM TLBO-FCM TLBO-KM/FCM machine learning algorithms

A Quasi-3D Threshold Voltage Model for Dual-Metal Quadruple-Gate MOSFETs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2014年第12期31卷 154-156页

作者： Visweswara Rao Samoju Satyabrata Jit pramod kumar Tiwarit Department of Electronics & Communication Engineering National Institute of Technology Rourkela 769008 India Department of Electronics Engineering Indian Institute of Technology (BHU) Varanasi 221005 India

Due to challenges with relentless scaling of conventional bulk complementary metal-oxide- semiconductor （CMOS） devices, non-conventional CMOS devices have been of great interest to scale metaboxide-semiconductor field effect transistors （MOSFETs） to the 32nm gate length and below effectively. Among non-conventional CMOS devices, quadruple-gate （QG） MOSFETs have been gaining interest because they are sup- posed to provide excellent electrostatic controllability for ultra-large-scale integration （ULSI） applications. A number of attempts have been made to analyze QG MOSFETs analytically with a great amount of success. Sharma et al. have presented an an- alytical threshold voltage model for QG MOSFETs using an isomorphic polynomial function for solv- ing the 3D Poisson equation. Chiang has presented a number of models of scaling length,threshold voltage and subthreshold current for QG MOS- FETs adopting a concept of the so-called equivalent number of gates （ENGs）.

关键词： Quasi-3DThreshold Voltage Model Quadruple-Gate MOSFETs

In vivo immunostimulatory effect of the amoebocyte lysate and plasma of Asian horseshoe crab,Tachypleus gigas in a piscine model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Marine Life Science & Technology 2021年第3期3卷 355-362页

作者： Sukanta kumar Nayak pramod kumar Nanda Priyabrat Swain Department of Biotechnology Maharaja Sriram Chandra Bhanja Deo University(Erstwhile North Orissa University)Odisha757003India ICAR-Indian Veterinary Research Institute Eastern Regional StationKolkata700037India Fish Health Management Division Central Institute of Freshwater AquacultureBhubaneswar751002India

Antimicrobial proteins/peptides are becoming a new generation of immunostimulants for prevention and disease control in human and animals,including aquatic *** the haemolymph of horseshoe crabs(Tachypleus)contains broad ranges of bioactive compounds,we have explored the in vivo immunostimulating potential of amoebocyte lysate and plasma using a fish *** major carp,Labeo rohita,yearlings were injected intraperitoneally with two doses of lysate and plasma at 50 and 100µg protein per *** abnormalities and/or mortalities were recorded in any *** injected with 50µg lysate and 100µg plasma protein showed significant enhancement(P0.01)in any *** the contrary,a significantly high hemolysin titre was recorded in fish that received 100µg plasma *** challenge with Aeromonas hydrophila,both lysate and plasma protein(s)cross protected the fish after 30 *** highest survival(50%)was recorded in group injected with 50µg lysate protein,followed by 45%in both 100µg lysate and plasma protein injected groups.

关键词： Amoebocyte lysate Immunostimulatory Labeo rohita Plasma Tachypleus gigas

An efficient computational technique for time-fractional modified Degasperis-Procesi equation arising in propagation of nonlinear dispersive waves

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2021年第1期6卷 30-39页

作者： Ved Prakash dubey Rajnesh kumar Jagdev Singh Devendra kumar Faculty of Mathematical and Statistical Sciences Shri Ramswaroop Memorial UniversityLucknow-Deva RoadUttar Pradesh-225003India Department of Applied Science and Humanities Government Engineering CollegeNawadaDepartment of Science and TechnologyBihar-805122India Department of Mathematics JECRC UniversityJaipur-303905RajasthanIndia Department of Mathematics University of RajasthanJaipur-302004RajasthanIndia

In this paper,an efficient hybrid numerical scheme which is based on a joint venture of the q-homotopy analysis method and Sumudu transform is applied to investigate the time-fractional modified Degasperis-Procesi(DP)*** present study considers the Caputo fractional *** fractional order modified DP model is very important and plays a great role in study of ocean engineering and *** proposed scheme provides a beautiful opportunity for proper selection of the auxiliary parameter h and the asymptotic parameterρ(≥1)to handle mainly the differential equations of nonlinear *** offered scheme produces the solution in the shape of a convergent series in a large admissible domain which is helpful to regulate the region of convergence of a series *** proposed work computes the approximate analytical solution of the fractional modified DP equation systematically and also presents graphically the variation of the obtained solution for diverse values of the fractional parameterβ.

关键词： Fractional Degasperis-Procesi equation Nonlinear dispersive waves Analytical solution q-homotopy analysis method Sumudu transform