People Location Tracking System for Indoor Environmants Using Distributed Wireless Sensor Network

Vinay Kumar Singh,Wan-Young Chung,Hyotaek Lim 제어로봇시스템학회 2006 제어로봇시스템학회 국내학술대회 논문집 Vol.2006 No.6

Indoor Passive Location Tracking and Activity Monitoring using WSN for Ubiquitous Healthcare

Singh, Vinay Kumar,Lee, Seung-Chul,Lim, Hyo-Taek,Myllyla, Risto,Chung, Wan-Young The Korea Institute of Information and Commucation 2007 Journal of information and communication convergen Vol.5 No.4

Indoor location system using wireless sensor network technology was applied for the status evaluation and activity monitoring of elderly person or chronic invalid at home. Location awareness application is transparent to the daily activities, while providing the embedded computing infrastructure with an awareness of what is happening in this space. To locate an object, the active ceiling-mounted reference beacons were placed throughout the building. Reference beacons periodically publish location information on RF and ultrasonic signals to allow application running on mobile or static nodes to study and determine their physical location. Once object-carried passive listener receives the information, it subsequently determines it's location from reference beacons. By using only the sensor nodes without any external network infrastructure the cost of the system was reduced while the accuracy in our experiments. was fairly good and fine grained between 7 and 15 cm for location awareness in indoor environments. Passive architecture used here provides the security of the user privacy while at the server the privacy was secured by providing the authentication using Geopriv approach. This information from sensor nodes is further forwarded to base station where further computation is performed to determine the current position of object and several applications are enabled for context awareness.

Eye Blinking 기반의 장애인용 오락 시스템의 설계

Vinay Kumar Singh,임효택(Hyotaek Lim),정완영(Wan-Young Chun) 한국통신학회 2006 한국통신학회 학술대회논문집 Vol.2006 No.11

A wireless sensor network approach to enable Location awareness in ubiquitous healthcare applications

( Vinay Kumar Singh ),( Hyo Taek Lim ),( Wan Young Chung ) 한국센서학회 2007 센서학회지 Vol.16 No.4

Mirizzi’s syndrome

Ashok Kumar,Ganesan Senthil,Anand Prakash,Anu Behari,Rajneesh Kumar Singh,Vinay Kumar Kapoor,Rajan Saxena 한국간담췌외과학회 2016 한국간담췌외과학회지 Vol.20 No.1

Backgrounds/Aims: Mirizzi’s syndrome (MS) poses great diagnostic and management challenge to the treating physician. We presented our experience of MS cases with respect to clinical presentation, diagnostic difficulties, surgical procedures and outcome. Methods: Prospectively maintained data of all surgically treated MS patients were analyzed. Results: A total of 169 MS patients were surgically managed between 1989 and 2011. Presenting symptoms were jaundice (84%), pain (75%) and cholangitis (56%). Median symptom duration s was 8 months (range, <1 to 240 months). Preoperative diagnosis was possible only in 32% (54/169) of patients based on imaging study. Csendes Type II was the most common diagnosis (57%). Fistulization to the surrounding organs (bilio-enteric fistulization) were found in 14% of patients (24/169) during surgery. Gall bladder histopathology revealed xanthogranulomatous cholecystitis in 33% of patients (55/169). No significant difference in perioperative morbidity was found between choledochoplasty (use of gallbladder patch) (15/89, 17%) and bilio-enteric anastomosis (4/28, 14%) (p=0.748). Bile leak was more common with choledochoplasty (5/89, 5.6%) than bilio-enteric anastomosis (1/28, 3.5%), without statistical significance (p=0.669). Conclusions: Preoperative diagnosis of MS was possible in only one-third of patients in our series. Significant number of patients had associated fistulae to the surrounding organs, making the surgical procedure more complicated. Awareness of this entity is important for intraoperative diagnosis and consequently, for optimal surgical strategy and good outcome.

Management of residual gall bladder

Ashish Singh,Abhimanyu Kapoor,Rajneesh Kumar Singh,Anand Prakash,Anu Behari,Ashok Kumar,Vinay Kumar Kapoor,Rajan Saxena 한국간담췌외과학회 2018 Annals of hepato-biliary-pancreatic surgery Vol.22 No.1

Backgrounds/Aims: A residual gallbladder (RGB) following a partial/subtotal cholecystectomy may cause symptoms that require its removal. We present our large study regarding the problem of a RGB over a 15 year period. Methods: This study involved a retrospective analysis of patients managed for symptomatic RGB from January 2000 to December 2015. Results: A RGB was observed in 93 patients, who had a median age of 45 (25-70) years, and were comprised of 69 (74.2%) females. The most common presentation was recurrence pain (n=64, 68.8%). Associated choledocholithiasis was present in 23 patients (24.7%). An ultrasonography (USG) failed to diagnose RGB calculi in 10 (11%) patients; whereas, magnetic resonance cholangio-pancreatography (MRCP) accurately diagnosed RGB calculi in all the cases except for 2 (4%) and, additionally, detected common bile duct (CBD) stones in 12 patients. Completion cholecystectomy was performed in all patients (open 45 [48.4%]; laparoscopic 48 [51.6%] and 19 [20.4%] patients required a conversion to open). The RGB pathology included stones in 90 (96.8%), Mirizzi’s syndrome in 10 (10.8%) and an internal fistula in 9 (9.7%) patients. Additional procedures included CBD exploration (n=6); Choledocho-duodenostomy (n=4) and Roux-en-Y hepatico-jejunostomy (n=3). The mortality and morbidity were nil and 11% (all wound infection), respectively. Two patients developed incisional hernia during follow up. The mean follow up duration was 23.1 months (3-108) in 65 patients and the outcome was excellent and good in 97% of the patients. Conclusions: Post-cholecystectomy recurrent biliary colic should raise suspicion of RGB. MRCP is a useful investigation for the diagnosis and assessment of any associated problems and provides a roadmap for surgery. Laparoscopic completion cholecystectomy is feasible, but is technically difficult and has a high conversion rate.

Genome‑wide mining of respiratory burst homologs and its expression in response to biotic and abiotic stresses in Triticum aestivum

Sudhir Navathe,Sakshi Singh,Vinay Kumar Singh,Ramesh Chand,Vinod Kumar Mishra,Arun Kumar Joshi 한국유전학회 2019 Genes & Genomics Vol.41 No.9

Background Membrane-bound NADPH oxidases (Nicotinamide adenine ainucleotide phosphate oxidase) also called respiratory burst oxidase homologs (Rboh) play an essential role in ROS production under normal as well as environmental stress conditions in plants. Objective To identify and study respiratory burst homologs (Rboh) from the wheat genome as well as characterize their role in various biological and molecular processes along with expression in response to biotic and abiotic stresses. Methods The Rboh homologs in the wheat genome were predicted based on data processing, alignment of sequences and phylogenetic analysis of sequences in numerous plant species and wheat. The conserved motifs were known followed by domain design study. The 3-D structure prediction and similarity modeling were administered for NADPH enzyme domain. Gene ontology and a functional study were done in addition to expression analysis of Triticum aestivum respiratory burst oxidase (TaRboh) gene family in response to biotic as well as abiotic stress. Results Phylogenetic analysis of Rboh gene family members among seven plant species including wheat, classified the family into four subfamilies. Rboh genes are mainly involved in various biological processes such as Response to oxidative stress, Superoxide anion generation, Hydrogen peroxide biosynthetic process. Among the molecular functions, calcium ion binding, peroxidase activity, oxidoreductase activity, superoxide-generating NADPH oxidase activity are essential. Enzyme annotation of the family and superfamily revealed that it encodes to five structural clusters and coding to enzymes NAD(P)H oxidase ( H2O2-forming) (EC:1.6.3.1), Ferric-chelate reductase (NADH) (EC: 1.16.1.7), Peroxidase (EC: 1.11.1.7), Ribose-phosphate diphosphokinase (EC: 2.7.6.1). The enzymes contain six membrane-spanning domains, two hemes, and conserved motifs associated with NADPH, EF-hand and FAD binding. The outcomes additionally reflect a distinct role of this enzyme in different molecular functions which are responsible for the stress signaling. Further, the transcripts of TaRboh found expressed in various plant parts such as stem, leaves, spike, seed, and roots. We also observed expression of these gene family members under drought/combination of drought + heat and important wheat pathogens such as Puccinia striformis, Blumeria graminis f.sp. tritici, Fusarium graminiarum, F. pseudograminiarum, and Zymoseptoria tritici. Conclusions The investigation demonstrated that identified respiratory burst homologs (Rboh) in T. aestivum were involved in pathogen activated ROS production and have regulatory functions in cell death and defense responses.

Effect of Sintering Temperature on the Physico‑Mechanical Behavior of SiC Reinforced Zinc‑Magnesium Based Composite

Amrendra Rai,Pooja Rai,Vijay Kumar,Naresh Kumar Singh,Vinay Kumar Singh 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.9

The present research work deals with study the effect of sintering temperature on the physical and mechanical behavior ofZn2Mg6SiCcomposite, which can be used as a biodegradable implant. Sintering of the composite has been done at a temperatureof 430 °C, 450 °C, 470 °C and 490 °C. The mechanical and physical properties of the samples have been observedto vary with sintering temperature. The grain size of the samples has observed to be optimized at 450 °C with grain size0.2587 μm and provides maximum strength to the samples. The densification of the composites achieved was found to bemaximum at 450 °C having a value 90.30%. Wear rate, hardness, Young’s Modulus of elasticity and flexural strength wereobserved to be maximum at this temperature. Scanning electron microscopy and X-ray diffraction spectroscopy of the samplesat various temperatures were done to find microstructural changes and surface morphology of the composite.

Exploiting the bioactive properties of essential oils and their potential applications in food industry

Vinay Kumar Pandey,Anjali Tripathi,Shivangi Srivastava,Aamir Hussain Dar,Rahul Singh,Alvina Farooqui,Sneha Pandey 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.7

Fruits are an abundant source of minerals and nutrients. High nutritional value and easy-to-consume property have increased its demand. In a way to fulfil this need, farmers have increased production, thus making it available for consumers in various regions. This distribution of fruits to various regions deals with many associated problems like deterioration and spoilage. In a way, the common practices that are being used are stored at low temperatures, preservation with chemicals, and many more. Recently, edible coating has emerged as a promising preservation technique to combat the above-mentioned problems. Edible coating stands for coating fruits with bioactive compounds which maintains the nutritional characteristics of fruit and also enhances the shelf life. The property of edible coating to control moisture loss, solute movement, gas exchange, and oxidation makes it most suitable to use. Preservation is uplifted by maintaining the nutritional and physicochemical properties of fruits with the effectiveness of essential oils. The essential oil contains antioxidant, antimicrobial, flavor, and probiotic properties. The utilization of essential oil in the edible coating has increased the property of coating. This review includes the process of extraction, potential benefits and applications of essential oils in food industry.

Extracellular Novel Metalloprotease from Xenorhabdus indica and Its Potential as an Insecticidal Agent

( Kumar Pranaw ),( Surender Singh ),( Debjani Dutta ),( Nirpendra Singh ),( Garima Sharma ),( Sudershan Ganguly ),( Vinay Kalia ),( Lata Nain ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.11

Proteases produced by Xenorhabdus are known to play a significant role in virulence leading to insect mortality. The present study was undertaken to purify and characterize protease from Xenorhabdus indica, an endosymbiont of nematode Steinernema thermophilum, and to decipher its role in insect mortality and its efficacy to control Helicoverpa armigera. A set of 10 strains of Xenorhabdus isolated from different regions of India were screened for protease activity on the basis of zone of clearing on gelatin agar plates. One potent strain of Xenorhabdus indica was selected for the production of protease, and the highest production (1,552 U/ml) was observed at 15-18 h of incubation at 28oC in soya casein digest broth. The extracellular protease was purified from culture supernatant using ammonium sulfate precipitation and ion-exchange chromatography. The enzyme was further characterized by SDS-PAGE and zymography, which confirmed the purity of the protein and its molecular mass was found to be ~52 kDa. Further MALDI-TOF/TOF analysis and effect of metal chelating agent 1,10-phenanthrolin study revealed the nature of the purified protease as a secreted alkaline metalloprotease. The bioefficacy of the purified protease was also tested against cotton bollworm (Helicoverpa armigera) and resulted in 67.9 ± 0.64% mortality within one week. This purified protease has the potential to be developed as a natural insecticidal agent against a broad range of agriculturally important insects.