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Evaluation and management of acute pancreatitis

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World Journal of Clinical Cases 2019年第9期7卷 1006-1020页

作者： Ahmed T Chatila Mohammad Bilal praveen Guturu Department of Internal Medicine The University of Texas Medical Branch Division of Gastroenterology and Hepatology The University of Texas Medical Branch Division of Gastroenterology and Hepatology the University of Texas Medical Branch

Acute pancreatitis(AP) is one of the most common gastrointestinal causes for hospi-talization in the United States. In 2015, AP accounted for approximately390000 hospitalizations. The burden of AP is only expected to increase over *** recent advances in medicine, pancreatitis continues to be associated with a substantial morbidity and mortality. The most common cause of AP is gallstones, followed closely by alcohol use. The diagnosis of pancreatitis is established with any two of three following criteria:(1) Abdominal pain consistent with that of AP;(2) Serum amylase and/or lipase greater than three times the upper limit of normal; and(3) Characteristics findings seen in crosssectional abdominal imaging. Multiple criteria and scoring systems have been established for assessing severity of AP. The cornerstones of management include aggressive intravenous hydration, appropriate nutrition and pain *** retrograde cholangiopancreatography and surgery are important aspects in management of acute gallstone pancreatitis. We provide a comprehensive review of evaluation and management of AP.

关键词： Acute pancreatitis Necrotizing pancreatitis Resuscitation Gallstone pancreatitis

Data mining-based algorithm for assortment planning

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Journal of Management Analytics 2020年第3期7卷 443-457页

作者： praveen Ranjan Srivastava Satyendra Sharma Simran Kaur Information Technology Indian Institute of Management(IIM)RohatakRohtakIndia Operation and Supply Chain Birla Institute of Technology and Science(BITS)PilaniPilaniRajasthanIndia Computer Science Birla Institute of Technology and Science(BITS)PilaniPilaniRajasthanIndia

With increasing varieties and products,management of limited shelf space becomes quite difficult for ***,an efficient product assortment,which in turn helps to plan the organization of various products across limited shelf space,is extremely important for *** can be distinguished based on quality,price,brand,and other attributes,and decision needs to be made about an assortment of the products based on these *** efficient assortment planning improves the financial performance of the retailer by increasing profits and reducing operational *** techniques can be very effective in grouping products,stores,*** help managers solve the problem of assortment *** paper proposes data mining approaches for assortment planning for profit maximization with space,and cost constraints by mapping it into well-known knapsack problem.

关键词： Retail assortment SKU rationalization data mining

Experimental and Numerical Study of Penguin Mode Flapping Foil Propulsion System for Ships

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Journal of Bionic Engineering 2017年第4期14卷 770-780页

作者： Naga praveen Babu Mannam Parameswaran Krishnankutty Harikrishnan Vijayakumaran Richards Chizhuthanickel Sunny Ocean Engineering Indian Institute of Technology Madras Chennai 600036 India Texas A&M University College Station TX 77840 USA

The use of biomimetic tandem flapping foils for ships and underwater vehicles is considered as a unique and interesting concept in the area of marine propulsion. The flapping wings can be used as a thrust producing, stabilizer and control devices which has both propulsion and maneuvering applications for marine vehicles. In the present study, the hydrodynamic per- formance of a pair of flexible flapping foils resembling penguin flippers is studied. A ship model of 3 m in length is fitted with a pair of counter flapping foils at its bottom mid-ship region. Model tests are carried out in a towing tank to estimate the propulsive performance of flapping foils in bollard and self propulsion modes. The same tests are performed in a numerical environment using a Computational Fluid Dynamics （CFD） software. The numerical and experimental results show reasonably good agreement in both bollard pull and self propulsion trials. The numerical studies are carried out on flexible flapping hydrofoil in unsteady conditions using moving unstructured grids. The efficiency and force coefficients of the flexible flapping foils are determined and presented as a function of Strouhal number.

关键词： biomimetic propulsion flapping foil penguin locomotion Strouhal number tandem arrangement thrust coefficient

Thermally insulating robust carbon composite foams with high EMI shielding from natural cotton

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Journal of Materials Science & Technology 2021年第35期94卷 113-122页

作者： A.Chithra praveen Wilson Sujith Vijayan R.Rajeev K.Prabhakaran Department of Chemistry Indian Institute of Space Science and TechnologyThiruvananthapuram 695547India Analytical and Spectroscopy Division Vikram Sarabhai Space CentreThiruvananthapuram 695022India

Thermally insulating and fire-resistant carbon composite foams are prepared by consolidating natural cotton fibre dispersed in aqueous sucrose solution by filter-pressing followed by drying and *** compressive strength(5 kPa to 1.4 MPa)and thermal conductivity(0.069 to 0.185 W m^(-1)K^(-1))depend on the foam density(0.06 to 0.31 g cm^(-3))which is modulated by varying the sucrose solutions concentration(100 to 700 g L^(-1)).Partially flexible to the rigid transition of the carbon composite foams occurs at sucrose concentration above 200 g L^(-1).The tubular carbon fibre formed from cotton is welded at their contact points by the amorphous carbon produced from sucrose leading to partial flexibility at low sucrose concentration and advancement of fibre-to-fibre bonding area at higher sucrose concentration results in rigid *** porosity in the inter-fibre space and lumen of the carbonized cotton fibre contributes to the low thermal *** carbon composite foams prepared at a sucrose solution concentration of 500 g L^(-1) and above are amenable to machining using conventional machines and *** rigid carbon foams show EMI shielding effectiveness and specific shielding effectiveness in the ranges of 21.5 to 38.9 d B and 108-138 dB cm^(3) g^(-1),respectively.

关键词： Foams natural fibres thermal properties consolidation mechanical properties emi shielding properties

Influence of geometric design characteristics on safety under heterogeneous traffic flow

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Journal of Traffic and Transportation Engineering(English Edition) 2016年第6期3卷 559-570页

作者： praveen Vayalamkuzhi Veeraragavan Amirthalingam Department of Civil Engineering Indian Institute of Technology MadrasChennai 600036India

This paper focuses on analysing the influence of geometric design characteristics on traffic safety using bi-directional data on a divided roadway operated under heterogeneous traffic conditions in India. The study was carried out on a four lane divided inter-city highway in plain and rolling terrain. Statistical modelling approach by Poisson regression and Negative binomial regression were used to assess the safety performance as occurrence of crashes are random events and to identify the influence of the geometric design variables on the crash frequency. Negative binomial regression model was found to be more suitable to identify the variables contributing to road crashes. The study enabled better understanding of the factors related to road geometrics that influence road crash frequency. The study also established that operating speed has a significant contribution to the total number of crashes. Negative binomial models are found to be appropriate to predict road crashes on divided roadways under heterogeneous traffic conditions.

关键词： Road safety Geometric design Regression modelling Road crash Heterogeneous traffic flow

Formulation development and evaluation of pioglitazone hydrochloride self-emulsifying drug delivery systems

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Journal of Chinese Pharmaceutical Sciences 2015年第7期24卷 433-441页

作者： Gannu praveen kumar D.Bikshapathi P.Madhukar Department of Pharmaceutics Sahasra Instituite of Pharmaceutical SciencesNear Ayyappa Swamy TempleWarangal–506007India Department of Pharmaceutics Vijaya college of Pharmacy Vijaya College of Pharmacy

As a widely prescribed anti diabetic drug, pioglitazone belongs to class II under BCS and exhibits low and variable oral bioavailability due to its poor aqueous solubility. Its oral absorption is dissolution rate limited, and its solubility and dissolution rate need to be enhanced in order to increase its oral bioavailability. In the present study, we aimed to screen various oils, surfactants and cosolvents. The highest solubility was observed in Labrafac, Tween-80 and propylene glycol. Then the feasibility of formulating pioglitazone SEDDS was evaluated, and the effect of dilution on the dissolution rate and dissolution efficiency of pioglitazone was also analyzed. A comparative evaluation of pioglitazone from SEDDS was made in SGF and 1% SLS. Dissolution of pioglitazone from SEDDS was rapid and higher compared with pure drug. The rate and extent of release of pioglitazone hydrochloride from stable SEDDS （F1） were higher in 1% SLS compared with SGF. The FTIR spectra proved that there was on chemical interaction between excipients and drug. SEM studies confirmed that the size was small and spherical.

关键词： Pioglitazone SEDDS Solubility Size Zeta Potential

Charging infrastructure planning for electric vehicle in India:Present status and future challenges

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Regional Sustainability 2022年第4期3卷 335-345页

作者： Sulabh SACHAN praveen Prakash SINGH Department of Electrical Engineering GLA UniversityMathura281406India Tallin University of Technology Tallin19086Estonia

The challenge to deal with environmental contamination along with national goals such as energy security,reliability,and self-dependency due to depleting fossil fuel resources has motivated researchers to find an alternate solution in the transport *** to this,electrification of the transport sector has become an achievable solution that has caught attention with increasing penetration in the market *** is a participant in the Paris Agreement which aims to curtail the production of greenhouse gases and limit the escalating *** intervention and changes in policy and regulations are the key aspects of technological *** to internal combustion engine(ICE)-based vehicles,the consumers’frame of mind concerns about adapting to e-mobility is anxiety over charging times and driving ***,the development of charging stations plays a crucial role in promoting electric vehicles(EVs).This study investigates to identify different barriers that exist in the Indian context related to the adoption of ***,this work emphasizes the recent developments in charging infrastructure planning in ***,the status of installed charging stations is *** appropriate charging stations are associated with several challenges,which are also highlighted to provide guidance to public and private entities that can be adopted in their respective business *** India has the second largest population and is the seventh largest country in the world,the EV adoption rate of India is considerably low compared to other countries;for India,there is a long way to match the growth rate of EV *** it becomes essential to develop a robust and suitable charging infrastructure to promote the sale and use of EVs in India.

关键词： Charging infrastructure planning E-mobility Electric vehicle Government initiatives Market player Vehicle to grid(V2G)

Nitrogen-doped biochars as adsorbents for mitigation of heavy metals and organics from water:a review

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Biochar 2022年第1期4卷 906-935页

作者： Nitesh Kasera praveen Kolar Steven G.Hall Department of Biological and Agricultural Engineering North Carolina State UniversityRaleighNCUSA

Mitigation of toxic contaminants from wastewater is crucial to the safety and sustainability of the aquatic ecosystem and human *** is a pressing need to find economical and efficient technologies for municipal,agricultural,aquacultural,and industrial wastewater ***-doped biochar,which is synthesized from waste biomass,is shown to exhibit good adsorptive performance towards harmful aqueous contaminants,including heavy metals and organic ***-porating nitrogen into the biochar matrix changes the overall electronic structure of biochar,which favors the interaction of N-doped biochar with *** this review,we start the discussion with the preparation techniques and raw materials used for the production of N-doped biochar,along with its structural ***,the adsorption of heavy metals and organic pollutants on N-doped biochars is systematically *** adsorption mechanisms of contaminant removal by N-doped biochar are also clearly ***,mathematical analyses of adsorption,crucial to the quantification of adsorption,process design,and understanding of the mechanics of the process,are ***,the influence of environmental parameters on the adsorption process and the reusability of N-doped biochars are critically ***,future research trends for the design and development of application-specific preparation of N-doped biochars for wastewater treatment are suggested.

关键词： N-doped Nitrogen-enriched Adsorption Wastewater Mechanism

Genetic Variability and Direct Selection Criterion for Seed Yield in Segregating Generations of Barley (<i>Hordeum vulgare</i>L.)

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American Journal of Plant Sciences 2015年第9期6卷 1543-1549页

作者： Sunil K. Yadav Ashok K. Singh praveen pandey Smita Singh Department of Genetics and Plant Breeding Jawahar Lal Nehru Krishi Vishwavidyalaya Rewa India Department of Genetics and Plant Breeding Narendra Deva University of Agriculture and Technology Kumarganj Faizabad India

The aim of this study was to determine nature and extent of variability parameters and their utilization in barley breeding programme. A total of 45 F1s along with their parents and F2 populations were evaluated in a randomized block design with 3 replications during Rabi (winter season) 2014. The various traits measured were days to 50% flowering, days to maturity, plant height, flag leaf area, upper leaf area, tillers-plant, spikes-plant, spike length, grains-spike, spike weight, grain weight-spike, spike harvest index, 1000 grain weight, biological yield-plant, grain yield-plant (g), harvest index, grain size, husk content and protein content. Results showed that significant variation was observed for all the traits studied in the entire gene pool. The degree of genotypic and phenotypic coefficient of variation was high for tillers-plant, spike-plant, grain yield-plant, flag leaf area, harvest index, 1000 grain weight, grain weight-spike, upper leaf area and husk content. High heritability coupled with high genetic advance was recorded for tillers-plant, spikes-plant, grain yield-plant, flag leaf area, harvest index, grain weight-spike, upper leaf area, husk content, grain size and plant height suggesting that these traits are highly heritable and governed by additive gene action. Moderate heritability coupled with high genetic advance was observed for 1000 grain weight, biological yield-plant, spike length, protein content, grains-spike and spike weight;however, days to 50% flowering and days to maturity had moderate heritability coupled with low genetic advance suggesting preponderance on non-additive gene action in the inheritance of these traits. It could be concluded that the traits of tillers-plant, spikes-plant, grain yield-plant, flag leaf area, harvest index, grain weight-spike, upper leaf area, husk content, grain size and plant height were identified as most decisive factor intended towards developing high yielding barley cultivars.

关键词： Barley Genetic Variability Heritability Genetic Advance