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Gastroenterology Report 2020年第2期8卷 85-89,I0001页

作者： Vishal Singh Matam vijay-kumar Department of Nutritional Sciences The Pennsylvania State UniversityUniversity ParkPAUSA UT-Microbiome Consortium Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesOHUSA Department of Medical Microbiology&Immunology The University of ToledoOHUSA

Consumption of processed foods—which are generally composed of nutritionally starved refined ingredients—has increased exponentially worldwide.A rise in public health awareness that low fiber intake is strongly linked to new-age disorders has spurred food manufacturers to fortify processed foods with refined dietary fibers(RDFs).Consumption of whole foods rich in natural fibers undoubtedly confers an array of health ***,it is not clear whether RDFs extracted from the whole plant,kernel,and fruit peels exert similar physiological effects to their naturally occurring *** studies caution that RDFs are not universally beneficial and that inappropriate consumption of RDFs may risk both gastrointestinal and liver ***,we briefly summarize the beneficial and detrimental effects of RDFs on digestive health and discuss the contribution of metabolites derived from microbial fermentation of RDFs in driving such positive or negative health outcomes.

关键词： gut microbiota fermentation IBD metabolic syndrome liver cancer

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Journal of Ocean Engineering and Science 2023年第2期8卷 111-123页

作者： Raj kumar Ravi Shankar verma Atul kumar Tiwari Department of Mathematics Faculty of Engineering&TechnologyVeer Bahadur Singh Purvanchal UniversityJaunpur222003India Department of Mathematics Motihari College of EngineeringMotihari845401BiharIndia

This work is devoted to get a new family of analytical solutions of the(2+1)-coupled dispersive long wave equations propagating in an infinitely long channel with constant depth,and can be observed in an open sea or in wide *** solutions are obtained by using the invariance property of the similarity transformations method via one-parameter Lie group *** repeated use of the similarity transformations method can transform the system of PDEs into system of *** adequate restrictions,the reduced system of ODEs is *** simulation is performed to describe the solutions in a physically meaningful *** profiles of the solutions are simulated by taking an appropriate choice of functions and constants involved *** each animation,a frame for dominated behavior is *** exhibit elastic multisolitons,single soliton,doubly solitons,stationary,kink and parabolic *** results are significant since these have confirmed some of the established results of *** et al.(2020)and *** et al.(2020).Some of their solutions can be deduced from the results derived in this *** results in the existing literature are different from those in this work.

关键词： Dispersive long wave equations Solitons Invariants Lie-group Similarity solutions

A novel reconfiguration of the solar array to enhance peak power and efficiency under partial shading conditions:experimental validation

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Clean Energy 2023年第4期7卷 824-842页

作者： vijay Laxmi Mishra Yogesh K.Chauhan K.S.verma EED KNIT SultanpurU.P.Pin-228118India

Non-homogeneous irradiation patterns and temperature levels immensely affect the performance of solar photovoltaic *** shading conditions on solar arrays reduce the peak power and *** paper provides a new remedy called a novel Ramanujan reconfiguration(NRR)to eliminate this physical shading problem in solar photovoltaic *** is a static-based reconfigured technique that is built using a three-diode model with the help of the MATLAB®/Simulink®*** special feature of the proposed NRR technique is that when shade occurs on the solar modules,it gets realigned in a particular row,column,diagonal,corner,centre and middle peripheral *** helps over a wide range of shade dispersion on the solar *** novel topology is tested against the conventional total cross-tied(TCT)model and recently introduced advanced reconfigured models,namely odd–even topology(OET)and Kendoku topology(KDT).The results are tested under certain shading *** proposed NRR technique increases the peak power by 4.45,2.15 and 2.17 W under the first shading condition regarding TCT,OET and *** efficiency is improved by 0.51–2.18%under the third shading condition compared with other considered models in this *** addition,NRR leads to smooth output curves under the second,third and fourth shading conditions,effectively mitigating the local power *** experimental results show the proposed enhanced performance of the novel model against the other *** Abstract Remedy for physical problem correlated with solar photovoltaics Comparison with traditional and recent solar models Conclusion:NRR has effectively handled the problem related with solar *** has improved the efficiency up to 31.44%under ***,smooth output curves under S2-S4 shows its effectiveness in mitigating the local power *** power gain at 3.94%under S4 is achieved by novel ***-time verification proves the supremacy of novel proposed model over o

关键词： efficiency partial shading conditions peak power Ramanujan reconfiguration solar array total cross-tied three-diode model

Acclimatization of microalgae Arthrospira platensis for treatment of heavy metals in Yamuna River

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Water Science and Engineering 2020年第3期13卷 214-222页

作者： Nilesh kumar Shriya Hans Ritu verma Aradhana Srivastava University School of Chemical Technology Guru Gobind Singh Indraprastha UniversityNew Delhi 110078India

Bioaccumulation and biosorption in microalgae are effective approaches for the removal of heavy metals(HMs)from river *** objective of this study was to investigate the potential for use of acclimatized microalgae in the removal of HMs from the Yamuna River water as an acclimatizing *** active culture of Arthrospira platensis(***)was acclimatized to HMs up to a concentration of 100 mg/*** was gradually exposed to increasing concentrations of HMs in five subsequent batches with a step increase of 20 mg/L to acclimatize live cells in the simulated Yamuna River *** presence of high levels of HMs in the Yamuna River water caused growth *** empirical growth inhibition model was developed,and it predicted high threshold concentrations of HMs(210.7e424.5 mg/L),producing a positive specific growth rate of *** also showed high average removal efficiencies of HMs,including 74.0%for Cu,77.0%for Cd,50.5%for Ni,76.0%for Cr,76.5%for Pb,and 63.5%for Co,from HMs-enriched Yamuna River *** findings demonstrated that the maximum specific removal amounts of Cu,Cd,Ni,Cr,Pb,and Co were 54.0,58.0,39.0,62.8,58.9,and 45.3 mg/g,*** maximum yields of the value-added products chlorophyll and phycocyanin were 2.5 mg/g(in a batch of 40 mg/L for Cd)and 1054 mg/g(in a batch of 20 mg/L for Cu),***,acclimatized *** was proven to be a potential microalga not only for sequestration of HMs but also for production of valuable pigments.

关键词： Yamuna River A.platensis Heavy metals Acclimatization Biosorption Pigments

Low-velocity pneumatic conveying in horizontal pipe for coarse particles and fine powders

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Particuology 2008年第5期6卷 316-321页

作者： Yuji Tomita vijay kumar Agarwal Hiroyuki Asou Katsuya Funatsu Kyushu Institute of Technology 1-1 SensuichoTobataKitakyushu 804-5500Japan Indian Institute of Technology Hauz KhasNew Delhi 110016India

First, the characteristics of low-velocity conveying of particles having different hardness are experimentally investigated in a horizontal pipeline in terms of flow pattern and pressure drop to show that the slug flow can be classified into two types depending on the settling of particles along the pipeline, and the period is small for slug flow without the settled layer, which is called solitary slug flow. The pressure drop for soft particles is shown to be larger than that for hard particles. Then, experimental results are presented on horizontal fluidized-bed conveying of fine powders to show that air release from the top surface of the conveying channel is an imnortant factor for high mass flow rate of particles.

关键词： Low-velocity conveying Slug flow Soft particle Horizontal fluidized-bed conveying Fine powder

Role of MgF2 addition on high energy ball milled kalsilite:Implementation as dental porcelain with low temperature frit

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Journal of Advanced Ceramics 2014年第4期3卷 332-338页

作者： Pattem Hemanth kumar Abhinav SRIVASTAVA vijay kumar Nandini JAISWAL Pradeep kumar Vinay kumar SINGH Department of Ceramic Engineering Indian Institute of Technology(BHU)VaranasiIndia Department of Chemical Engineering Indian Institute of Technology(BHU)VaranasiIndia

Porcelain fused to metal(PFM)has received great attention over the last few years due to its importance in the ***(K_(2)O·Al_(2)O_(3)·SiO_(2))is a high thermal expansion porcelain,suitable for bonding to ***,kalsilite is a metastable phase which gets converted into crystalline leucite upon *** the current work feasibility of developing stable kalsilite phase,dispersion of MgF2 in it as an additive and using mechanochemical synthesis are *** fine dental material has been formulated by mixing prepared kalsilite with low temperature frit(LTF)in different *** crystalline phases evolved in fired powders are characterized by powder X-ray diffraction(XRD)*** with different ratio of LTF has been cold pressed and heat treated to examine its coefficient of thermal expansion(CTE),flexural strength,apparent porosity(AP),bulk density(BD)and *** indicate that MgF_(2) addition and high milling duration help in kalsilite *** also plays an important role in this stabilization,and at 1100℃single phase kalsilite formation is *** outcomes demonstrate that it is easily possible to synthesize a stable single phase kalsilite with desirable properties.

关键词： kalsilite porcelain fused to metal(PFM) dental ceramic mechanochemical synthesis thermal expansion X-ray diffraction(XRD)

Optimal promotional policy of an innovation diffusion model incorporating the brand image in a segment-specific market

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Journal of Management Analytics 2022年第1期9卷 120-136页

作者： Kuldeep Chaudhary Pradeep kumar Sudipa Chauhan vijay kumar Department of Mathematics AIASAmity UniversityNoidaIndia

This paper addresses the problem of determining the optimal promotional policy for a diffusion model in a segment-specific market under the assumption that the additional demand of the new product also improves brand image in the form of goodwill of the *** model is framed with the assumption that the firm uses the mass and differentiated promotion effort for each *** differentiated promotional efforts target each market segment independently and the mass promotional effort reaches different segments with a fixed *** derive the optimal promotional effort policy for each segment using maximumprinciple and also analyze the stability of the dynamical system by constructing a Lyapunov function through the graph theoretic *** analysis gives a deep insight into how the promotional effort should be planned by the decision makers keeping in mind the financial constrains without hindering the promotional effort at the end of the planning period.

关键词： market-segmentation brand-image maximum-principle stability analysis graph theoretic approach

Improved thermoelectric property of cation-substituted CaMnO_3

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Chinese Physics B 2015年第9期24卷 542-547页

作者： Pradeep kumar Subhash C.Kashyap vijay kumar Sharma H.C.Gupta Department of Physics Shyam Lal CollegeUniversity of Delhi Department of Physics Indian Institute of Technology Delhi

Single-phase pristine and cation-substituted calcium manganite（Ca1-xBixMn1-yVyO3-δ） polycrystalline samples were synthesized by the solid state reaction technique. Their thermoelectric properties were measured by a set up that was designed and assembled in the laboratory. The Ca1-x BixMn1-yVyO3-δsample with x = y = 0.04 has shown a power factor（S^2σ） of 176 μW/m/K^2 at 423 K, which is nearly two orders of magnitude higher than that of the pristine sample（2.1 μW/m/K2）. The power factor of the substituted oxide remains almost temperature independent as the Seebeck coefficient increases monotonically with temperature, along with the simultaneous decrease in electrical resistivity which is attributed to enhanced electron density due to co-doping of bismuth and vanadium and grain boundary scattering. These cation-substituted calcium manganites can be used as a potential candidate for an n-type leg in a thermoelectric generator（module）.

关键词： thermoelectric materials solid state reaction Seebeck coefficient power factor

SARS-CoV-2 infection in people with pre-existing liver disease:Further research is warranted

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World Journal of Gastroenterology 2021年第45期27卷 7855-7858页

作者： Henu kumar verma LVKS Bhaskar Department of Immunopathology Institute of lungs Biology and DiseaseComprehensive Pneumology CenterNeuherberg 85764MunichGermany Zoology Guru Ghasidas VishwavidyalayaBilaspur 495001ChhattisgarhIndia

Patients with severe liver disease who have been infected with severe acute respiratory syndrome coronavirus-2(coronavirus disease 2019)frequently develop acute respiratory distress syndrome and multiple organ failure,with a high mortality rate,as a result of the hyper-proinflammatory state known as the cytokine *** must recognize cytokine storms earlier to avoid intensive care admission and multi-organ damage,a critical life-threatening condition with prognostic and therapeutic implications.

关键词： Cytokine storm Liver disease Angiotensin-converting enzyme 2 Therapeutics Inflammatory markers

Gender differences in the relationship between alcohol consumption and gastric cancer risk are uncertain and not well-delineated

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World Journal of Gastrointestinal Oncology 2021年第12期13卷 2216-2218页

作者： Henu kumar verma LVKS Bhaskar Department of Immunopathology Institute of lungs Biology and DiseaseComprehensive Pneumology CenterHelmholtz ZentrumNeuherberg 85764MunichGermany Department of Zoology Guru Ghasidas VishwavidyalayaBilaspur 495001ChhattisgarhIndia

The role of alcoholic and other beverage consumption in the etiology of gastric cancer is *** studies have summarized and established a significant association between heavy alcohol consumption and gastric cancer risk... 详细信息

关键词： Alcohol Gastric cancer Meta-analysis Gender and alcohol intake Alcohol consumption