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The Journal of Biomedical Research 2016年第5期30卷 349-352页

作者： dinesh kumar Centre of Biomedical Research (CBMR) SGPGIMS Campus Lucknow-226014 Uttar Pradesh India

Peritoneal dialysis （PD） is a well-established renal replacement therapy （RRT） for end-stage renal failure （ESRF） and offers certain clear advantages over hemodialysis. However, PD is often associated with a high risk of infection of the intraperitoneal cavity, subcutaneous tunnel and catheter exit site, which may subsequently form microbial biofilms.

关键词： Use of biologically synthesized antimicrobial nanoparticles for improving peritoneal dialysis technique

The effect of mate removal on dawn singing behaviour in male pied bush chats

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Current Zoology 2011年第1期57卷 72-76页

作者： Vinaya kumar SETHI dinesh BHATT Amit kUMAR Avian Diversity and Bioacoustics Lab Department of Zoology and Environmental Science Gurukul Kangri University Haridwar249 404 Uttarakhand India

To determine the influence of pairing status on dawn singing behaviour in pied bush chats Saxicola caprata, we conducted mate removal experiments across eight territories. The experiment was divided into three stages： pre-removal （pairs were present on their respective territories）, removal （females were experimentally removed）, and returned （females were released into the focal pairs＇ territories）. Dawn bout length, song rate, song complexity, percentage performance time, song perch height, and distance of singing location to territory boundary were measured for each male during each experimental stage. We did not find an effect of mate removal on any dawn song characteristics of male pied bush chats suggesting that the presence or absence of a mate does not influence male dawn singing behaviour. Our findings further suggest that males use dawn chorus to mediate social relationships with neighbouring males to proclaim an established territory

关键词： Dawn chorus Mate removal Pied Bush Chat Saxicola caprata

Feature selection for face recognition:a memetic algorithmic approach

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第8期10卷 1140-1152页

作者： dinesh kUMAR Shakti kUMAR C.S.RAI Department of Computer Science & Engineering Guru Jambheshwar University of Science & Technology Institute of Science and Technology University School of Information Technology GGS Indraprastha University

The eigenface method that uses principal component analysis(PCA) has been the standard and popular method used in face *** paper presents a PCA-memetic algorithm(PCA-MA) approach for feature *** has been extended by MAs where the former was used for feature extraction/dimensionality reduction and the latter exploited for feature *** were performed over ORL and YaleB face databases using Euclidean norm as the *** was found that as far as the recognition rate is concerned,PCA-MA completely outperforms the eigenface *** compared the performance of PCA extended with genetic algorithm(PCA-GA) with our proposed PCA-MA *** results also clearly established the supremacy of the PCA-MA method over the PCA-GA *** further extended linear discriminant analysis(LDA) and kernel principal component analysis(kPCA) approaches with the MA and observed significant improvement in recognition rate with fewer *** paper also compares the performance of PCA-MA,LDA-MA and kPCA-MA approaches.

关键词： Face recognition Memetic algorithm (MA) Principal component analysis (PCA) Linear discriminant analysis (LDA) kernel principal component analysis (kPCA) Feature selection

INFLUENCE OF RIGID BOUNDARY ON THE LOVE WAVE PROPAGATION IN ELASTIC LAYER WITH VOID PORES

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Acta Mechanica Solida Sinica 2013年第5期26卷 551-558页

作者： Sumit kumar Vishwakarma Shishir Gupta dinesh kumar Majhi Department of Applied Mathematics Indian School of Mines Department of Mathematics Birla Institute of Technology and Science

In this paper, a mathematical model for Love wave propagation in a porous elastic layer under a rigid boundary resting over a poro-elastic half-space has been developed. The study shows that such a medium transmits two types of Love waves. The first front depends on the change in volume fraction of the pores whereas the second front depends upon the modulus of rigidity of the elastic matrix of the medium and is the same as the Love wave in an elastic layer over an elastic half-space. It is observed that the first front is many times faster than the shear wave in the medium with void pores due to the change in the volume fraction of the pores and is significant.

关键词： Love waves void pores volume fraction rigid boundary wave front

Screening colonoscopy:The present and the future

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World Journal of Gastroenterology 2021年第3期27卷 233-239页

作者： Chelsea V Hayman dinesh Vyas College of Medicine California Northstate UniversityElk GroveCA 95757United States Department of Surgery San Joaquin General HospitalFrench CampCA 95231United States

In the United States,colorectal cancer(CRC)is the second leading cause of mortality in men and *** are now seeing an increasing number of patients with advanced-stage diagnosis and mortality from colorectal cancer before 50 years of age,which requires earlier *** the increasing need for CRC screening through colonoscopy,and thus endoscopists,easier and simpler techniques are needed to train proficient *** most widely used approach by endoscopists is air insufflation colonoscopy,where air distends the colon to allow visualization of the colonic *** technique is uncomfortable for patients and requires an anesthetist to administer *** addition,patients commonly complain about discomfort post-op as air escapes into the small bowel and cannot be adequately *** research into the use of water insufflation colonoscopies has proved promising in reducing the need for sedation,decreasing discomfort,and increasing the visibility of the colonic *** direction into water insufflation colonoscopies which have shown to be simpler and easier to teach may increase the number of proficient endoscopists in training to serve our aging population.

关键词： Colorectal cancer Water-insufflation colonoscopy Air-insufflation colonoscopy Adenomatous polyps Adenoma detection rate

Synthesis of Micron-sized Hexagonal and Flowerlike Nanostructures of Lead Oxide (PbO_2) by Anodic Oxidation of Lead

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Nano-Micro Letters 2011年第4期3卷 223-227页

作者： dinesh Pratap Singh Onkar Nath Srivastava Estación Central Departamento de Física Department of Physics Banaras Hindu University

Micron sized hexagon- and flower-like nanostructures of lead oxide（α-PbO2） have been synthesized by very simple and cost effective route of anodic oxidation of lead sheet. These structures were easily obtained by the simple variation of applied voltage from 2-6 V between the electrodes. Lead sheet was used as an anode and platinum sheet served as a cathode. Anodic oxidation at 2 V resulted in the variable edge sized（1-2 μm） hexagon-like structures in the electrolyte. When the applied potential was increased to 4 V a structure of distorted hexagons consisting of some flower-like structures were obtained. Further increment of potential up to 6 V resulted in flower like structures of α-PbO2 having six petals. The diameter of the flower-like structures was 200-500 nm and the size of a petal was 100-200 nm.

关键词： Lead oxide nanostructures Anodic oxidation Hexagon-like structures Flower-like nanostructures

Development of Algorithm for Person Re-Identification Using Extended Openface Method

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Computer Systems Science & Engineering 2023年第1期44卷 545-561页

作者： S.Michael dinesh A.R.kavitha Anna University Chennai600025India Department of Computer Science&Engineering SRM Institute of Science&TechnologyChennai600026India

Deep learning has risen in popularity as a face recognition technology in recent ***,a deep convolutional neural network(DCNN)developed by Google,recognizes faces with 128 bytes per *** also claims to have achieved 99.96%on the reputed Labelled Faces in the Wild(LFW)***-ever,the accuracy and validation rate of Facenet drops down eventually,there is a gradual decrease in the resolution of the *** research paper aims at developing a new facial recognition system that can produce a higher accuracy rate and validation rate on low-resolution face *** proposed system Extended Openface performs facial recognition by using three different features i)facial landmark ii)head pose iii)eye *** extracts facial landmark detection using Scattered Gated Expert Network Constrained Local Model(SGEN-CLM).It also detects the head pose and eye gaze using Enhanced Constrained Local Neur-alfield(ECLNF).Extended openface employs a simple Support Vector Machine(SVM)for training and testing the face *** system’s performance is assessed on low-resolution datasets like LFW,Indian Movie Face Database(IMFDB).The results demonstrated that Extended Openface has a better accuracy rate(12%)and validation rate(22%)than Facenet on low-resolution images.

关键词： Constrained local model enhanced constrained local neuralfield enhanced hog scattered gated expert network support vector machine

Hybrid Machine Learning Model for Face Recognition Using SVM

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Computers, Materials & Continua 2022年第8期72卷 2697-2712页

作者： Anil kumar Yadav R.k.Pateriya Nirmal kumar Gupta Punit Gupta dinesh kumar Saini Mohammad Alahmadi IES College of Technology Bhopal462044India Maulana Azad National Institute of Technology Bhopal462003India Department of Information Technology Manipal University JaipurJaipur303007India Department of Computer and Communication Engineering Manipal University JaipurJaipur303007India Department of Software Engineering College of Computer Science and EngineeringUniversity of JeddahJeddah23218Saudi Arabia

Face recognition systems have enhanced human-computer interactions in the last ten ***,the literature reveals that current techniques used for identifying or verifying faces are not immune to *** Component Analysis-Support Vector Machine(PCA-SVM)and Principal Component Analysis-Artificial Neural Network(PCA-ANN)are among the relatively recent and powerful face analysis *** to PCA-ANN,PCA-SVM has demonstrated generalization capabilities in many tasks,including the ability to recognize objects with small or large data *** from requiring a minimal number of parameters in face detection,PCA-SVM minimizes generalization errors and avoids overfitting problems better than ***-SVM,however,is ineffective and inefficient in detecting human faces in cases in which there is poor lighting,long hair,or items covering the subject’s *** study proposes a novel PCASVM-based model to overcome the recognition problem of PCA-ANN and enhance face *** experimental results indicate that the proposed model provides a better face recognition outcome than PCA-SVM.

关键词： Face recognition system(FRS) face identification SVM discrete cosine transform(DCT) artificial neural network(ANN) machine learning

Prospects for 3D bioprinting of organoids

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Bio-Design and Manufacturing 2021年第3期4卷 627-640页

作者： Preety Rawal dinesh M.Tripathi Seeram Ramakrishna Savneet kaur Department of Molecular and Cellular Medicine Institute of Liver and Biliary Sciences(ILBS)D1Vasant KunjNew Delhi 110070India School of Biotechnology Gautam Buddha UniversityGreater NoidaIndia Department of Mechanical Engineering National University of SingaporeSingaporeSingapore

Three-dimensional(3D)organoids derived from pluripotent or adult tissue stem cells seem to possess excellent potential for studying development and disease mechanisms alongside having a myriad of applications in regenerative ***,lack of precise architectures and large-scale tissue sizes are some of the key limitations of current organoid technologies.3D bioprinting of organoids has recently emerged to address some of these *** this review,we discuss 3D bioprinting with respect to the use of bioinks and bioprinting methods and highlight recent studies that have shown success in bioprinting of stem cells and *** also summarize the use of several vascularization strategies for the bioprinted organoids,that are critical for a complex tissue *** fully realize the translational applications of organoids in disease modeling and regenerative medicine,these areas in 3D bioprinting need to be appropriately harnessed and channelized.

关键词： Three-dimensional bioprinting Bioink Organoid Microfluidics Extracellular matrix(ECM) Biomaterial

Effective parameter study for the facile and controlled growth of silver molybdate nano/micro rods

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Frontiers of Materials Science 2016年第4期10卷 375-384页

作者： Javier Esteban Enriquez MONTENEGRO dinesh Pratap SINGH Department of Physics University of Santiago Chile Avenida Ecuador 3493 Estacion Central Santiago 9170124 Chile

Controlled growth of nano/micro structures by controlling the effective parameters is the basic requirement for the application point of view in various areas. Here we report the facile growth of silver molybdate nanolmicro rods by mixing the solution of silver nitrate and ammonium molybdate at ambient condition followed by hydrothermal treatment at various temperatures for 12 h. To achieve the goal for the synthesis of long, high yield and homogeneous nanorods various effective parameters have been studied to set the most effective conditions for the growth. Among possible effective parameters first the temperature of the furnace was set by warring the temperature and then at the set temperature the concentration of reactants （NH4）6Mo7O24 and silver nitrate are varied respect to each other. The pH and temperature values were monitored during the mixing of the reactants. Structurallmicrostructural characterization revealed the optimum condition of 150℃ of the furnace and the concentration of （NH4）sMo7O24 and silver nitrate as described in various tables.

关键词： silver molybdate nanorod Ag6Mo10O33 controlled growth silver nitrate