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Design and Implementation of GUSNI 1.1： VI Tool for WSN Data Monitoring Applications

通讯和计算机（中英文版） 2011年第7期8卷 550-559页

作者： Roop Pahuja Harish kumar verma Moin Uddin Department of Instrumentation and Control Engineering National Institute of Technology Jalandhar 144011 India Department of Electrical Engineering Indian Institute of Technology Roorkee 247667 India Delhi Technological University Delhi 110042 India

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Design of a Concentration Sensor Based on Photonic Crystal Fiber Placed between Two Single Mode Fibers

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Soft Nanoscience Letters 2013年第4期3卷 36-38页

作者： Jitesh kumar verma Sonali Prava Dash Sukanta kumar Tripathy Maulana Azad National Institute of Technology (MANIT) Bhopal India National Institute of Science and Technology (NIST) Berhampur India.

We demonstrate the use of photonic crystal fiber (PCF) joined in between two single mode fibers (SMF) as a concentration sensor. To realize this, one micrometer length PCF of hexagonal lattice is sandwiched between two SMF having one micrometer length each. To maximize the coupling between SMF and PCF, the core diameters are made equal. Then the output from a given input through this structure is analyzed with respect to different concentrations in the air holes of PCF using Finite Difference Time Domain (FDTD) method. It is found that the variation of electric field intensity at the output is linear with respect to concentration of alcohol.

关键词： Concentration Sensor FDTD Method Photonic Crystal Fiber

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An HIV 1/2 point of care test on sputum for screening TB/HIV coinfection in central India-Will it work?

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Asian Pacific Journal of Tropical Medicine 2013年第3期6卷 216-219页

作者： Prabha Desikan Sajal De Nitika Pant Pai Pradyumna K Mishra Kaushal kumar Nikita Panwalkar Mayanka verma Zia Ul Hasan Kewal K Maudar Department of Microbiology Bhopal Memorial Hospital and Research CentreBhopalIndia Department of Pulmonary Medicine Bhopal Memorial Hospital and Research CentreBhopalIndia Department of Medicine Division of Clinical EpidemiologyMcGill University Health CentreMontrealCanada Department of Research Bhopal Memorial Hospital and Research CentreBhopalIndia TB Hospital Idgah HillsBhopalIndia

Objective:To determine whether the OraQuick(?).HIV-1/2 Assay(OraSure Technologies, Inc.,Bethlehem,PA,USA) in sputum is a valid tool for HIV surveillance among TB patients. Methods:A cross sectional study was carried out on sputa of patients diagnosed with *** were tested for antibodies to HIV using OraQuick. HIV-1/2 Assay(OraSure Technologies,Inc.,Bethlehem,PA,USA).The results were compared with results of serum ***:Compared to serum ELISA,the OraQuick(?).HIV-1/2 Assay in sputum specimens reported 90%sensitivity(9/10)and 100%specificity(307/307),with a positive predictive value of 100%(95%CI:66.37%-100.00%)and a negative predictive value of 99.68%(95%CI:98.20%-99.99%). Conclusions:This testing method may provide a useful strategy for conducting HIV surveillance in possible co-infected TB patients at peripheral *** there is no investment on infrastructure,it may be possible for paramedical health professionals to carry out the test. particularly in areas with low HIV endemicity.

关键词： Oraquick HIV Tuberculosis Sputum

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Ground bounce noise reduction aware combinational multi threshold CMOS circuits for nanoscale CMOS multiplier

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Frontiers of Optoelectronics 2013年第3期6卷 327-337页

作者： Bipin kumar verma Shyam Babu SINGH Shyam AKASHE Department of Electronics and Communication Engineering ITM University Gwalior (M.P.) 474001 India

Multi-threshold complementary metal-oxide- semiconductor （MTCMOS） is ofbn used to reduce the leakage current in idle circuit. Ground bounce noise produced during a transition mode （sleep-to-active） is an important challenge in MTCMOS. In this paper, various noise-aware combinational MTCMOS circuit was used to evaluate the ground bounce noise. An intermediate mode was applied in the sleep-to-active mode transition to reduce the charge stored on virtual lines to real ground. The dependence of ground bounce noise on voltage, transistor size and temperature was investigated with different MTCMOS circuit technique. The peak amplitude of ground bounce noise was reduced up to 78.82%. The leakage current of the circuit was decreased up to 99.73% and the active power of the circuit was reduced up to 62.32%. Simulation of multiplier with different MTCMOS circuit techniques was performed on 45nm CMOS technology.

关键词： multi-threshold complementary metal-oxide-semiconductor (MTCMOS) mode transition groundbounce noise sleep transistor

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Hematological, antioxidant and protective performance of Usnea longissima on chemical induced hepatotoxicity in experimental animals

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Journal of Coastal Life Medicine 2017年第5期5卷 224-232页

作者： Pritt verma Shravan kumar Paswan Abhisek Raj Virendra Nath Ramesh kumar Gupta Shikhar verma Sajal Srivastava ChandanaVenketshwara Rao Pharmacognosy and Ethnopharmacology Division CSIR-National Botanical Research InstituteLucknowIndia Amity Institute of Pharmacy Amity UniversityLucknowIndia Department of Pharmaceutical Sciences Central University of RajasthanRajasthanIndia Sherwood College of Pharmacy Barabanki-225001India

Objective: To investigated the hematological, antioxidant and protective performance of Usnea longissima (U. longissima) on CCl4 induced hepatotoxicity in experimental animals. Methods: Hepatotoxicity was induced by CCl4 (1 mL/kg body weigt 1:1 CCl4 i.p.), ethanolic U. longissima extracts at a doses (200 and 400 mg/kg body weigt) were administered to and compared with Silymarin (25 mg/kg body weigt) and hematological, antioxidant and enzymatic, non-enzymatic parameters were assessed through the liver functions test. All the observation was also supplemented with histopathological examination of liver sections. Results: Phytochemical investigation showed that ethanolic extract contains poly phenolic compounds tannins, flavonoids, alkaloids and saponins and acute toxicity study shows that ethanolic extract was safe up to 2000 mg/kg body weight. The toxicant induced a rise in the plasma enzyme levels of ALT, AST, ALP and total bilirubin level. This increased level was significantly decreased by the extract at 400 mg/kg body weight than 200 mg/kg body weight. The animals were prevented (partly or fully) which was showed in the histopathological changes using ethonolic U. longissima extract. Conclusions: The outcome of this study reveals that, there is a powerful antioxidant and hepatoprotective activity of U. longissima. It is believed that the present constituents are responsible for courting the hepatic disease and alternative components have the power to act as free radical scavenging properties.

关键词： Usnea longissima Carbon tetra chloride (CCl4) Hematological Antioxidant Histopathological

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Diagnosis of osteopetrosis in bilateral congenital aural atresia: Turning point in treatment strategy

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World Journal of Clinical Pediatrics 2016年第2期5卷 228-233页

作者： Ritu verma Manisha Jana Ashu Seith Bhalla Arvind kumar Rakesh kumar Department of Radiodiagnosis All India Institute of Medical Sciences Department of Otorhino--laryngology All India Institute of Medical Sciences

Aural atresia is a rare congenital malformation of the external and middle ear. There are several syndromic associations of this anomaly with those involving the first and second branchial arches. Occurrence of aural atresia with sclerosing skeletal dysplasia is unknown and has never been reported. The coexistence of a sclerosing dysplasia can make the surgical treatment in aural atresia difficult and risky; and the auditory improvement may not be as expected. Moreover, internal auditory canal narrowing and hence sensorineural hearing loss in sclerosing dysplasia might add to the already existing conductive hearing loss in such patients. In this case report we have described an unknown association of bilateral microtia with sclerosing skeletal dysplasia(autosomal dominant osteopetrosis) and clinical implications of these two conditions occurring together leading to a change in the management plan.

关键词： Aural atresia Osteopetrosis Congenital hearing loss Microtia

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Mathematical Modeling of Diffusion Phenomenon in a Moderately Constricted Geometry

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Applied Mathematics 2011年第2期2卷 241-246页

作者： Shailesh Mishra Narendra kumar verma Shafi Ullah Siddiqui 不详

The incorporation of fluid flow through modelled normal and stenosed capillary-tissue exchange system has highlighted issues that may have major applications for the study of diffusion phenomenon. Results clearly demonstrate the important roles played by various physiological characteristics and diffusion variables involved in the analysis on blood flow. Assessment of the severity of the disease could be made possible through the variation of a parameter named as retention parameter. An attempt has been made to study the effects of local variation of viscosity on flow, wall-shearing stress and distribution of dissolved material in diseased artery as compared to the normal.

关键词： Stenosis Diffusion Wall Shear Stress Viscosity Retention Parameter

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HPTLC-MS as a Neoteric Hyphenated Technique for Separation and Forensic Identification of Drugs

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Journal of Analytical Sciences, Methods and Instrumentation 2018年第1期8卷 1-15页

作者： Kanak Lata verma Manoj kumar Amar Pal Singh Regional Forensic Science Laboratory Government of NCT of Delhi New Delhi India Forensic Science Post Graduate Course Department of Anthropology University of Delhi New Delhi India

Drugs are traditionally been identified on basis of chromatographic-spectroscopic hyphenated techniques in instrumental analysis. Gas chromatography (GC) and Liquid chromatography (LC) hyphenated with mass spectroscopy (MS) i.e. GC-MS and LC-MS give reliable and confirmatory results in drugs identification. In the present work the novel hyphenated technique High Performance Thin Layer Chromatography-Mass Spectroscopy (HPTLC-MS) has been used. This technique provides efficient, quick and simple method for identification and separation of Narcotic drugs and psychotropic substances. The drugs under study are Papaverine, Methadone, Cocaine, Ketamine, Caffeine, Codeine, Diazepam, Thebaine, Heroin, Methamphetamine, Carbamazepine, Morphine, Narcotine and Ephedrine. The present study comprising of sixteen drugs has been carried out on CAMAG HPTLC instrument with automatic sampling. Thin layer chromatography (TLC) plates were developed in various solvent systems, scanned under TLC scanner and the results in terms of Retention Factor (Rf value) and UV spectrum (λmax) are presented in the manuscript. Using hyphenated technique of HPTLC-MS (MS 2020 SHIMADZU) spots of these drugs from TLC plate was lifted with CAMAG TLC-MS interface and confirmed by the mass spectrum of the individual drugs by their m/z values thus delivering fast and accurate confirmatory result on the TLC plate.

关键词： Narcotic Drugs Psychotropic Substances HPTLC-MS Chromatography Mass Spectroscopy Hyphenated Techniques Forensic Science

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Experimental Studies on Thermal Performance of a Pulsating Heat Pipe with Methanol/DI Water

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Journal of Electronics Cooling and Thermal Control 2013年第1期3卷 27-34页

作者： Bhawna verma Vijay Lakshmi Yadav Kaushal kumar Srivastava Department of Chemical Engineering Indian Institute of Technology Banaras Hindu University Varanasi India

The effect of working fluid on the start-up and thermal performance in terms of thermal resistance and heat transfer coefficient of a pulsating heat pipe have been studied in the present paper. Methanol and de-ionized water has been selected as the working fluid. The minimum startup power for DI water was obtained at 50% filling ratio and for methanol at 40%. The optimum filling ratio in terms of minimum startup power and minimum thermal resistance was 50% for DI water and 40% for methanol. The minimum thermal resistances for DI water and methanol were observed at vertical orientation. The evaporator side heat transfer coefficient for water was slightly more, while the condenser side heat transfer coefficient was appreciably more than that of methanol. Studies were also conducted for start-up time and temperature at different orientations and it was found that the PHP charged with methanol worked efficiently at all orientations.

关键词： Pulsating Heat Pipe Start-Up Power Working Fluid Thermal Resistance Heat Transfer Coefficient

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Role of Cartilage as a Graft Material for Tympanic Membrane and in Middle Ear Reconstruction

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International Journal of Otolaryngology and Head & Neck Surgery 2015年第2期4卷 66-72页

作者： Anant Chouhan Bhuvnesh kumar Singh Praveen Chandra verma Department of ENT JLN Medical College Ajmer India

Objective: The work was planned to evaluate the results of cartilage graft in the surgical treatment of chronic suppurative otitis media. Study Design: A prospective study. Materials and Methods: The present study was a prospective study of tympanoplasties and tympanomastoid surgeries performed on 100 patients. The main outcome measures were both anatomical and functional in form of graft incorporation and postoperative hearing function. Results: Cartilage was used as tympanic membrane and/or ossicle graft in the cases. There were no immediate postoperative or long term complications of surgery except for 10 cases in which there was a failure of graft uptake. There was a 7.6-decibel (dB) improvement in mean air conduction threshold post-operatively. A mean closure of average air bone gap of 8.4 decibels (dB) was noted which was statistically significant. Conclusion: The cartilage graft is a very effective option for the repair of the conducting mechanism of the ear with good take-up rates, less chances of rejection or extrusion and very few significant complications. The thickness of cartilage creates stiffness that is more resistant than the fascia to the anatomic deformities caused by negative middle ear pressure thus improving the long term integrity of the graft.

关键词： Cartilage Graft Pure Tone Audiometry Air Bone Gap

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