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Performance assessment of aged binder rejuvenated with Polanga oil

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第6期6卷 608-620页

作者： Sujit Kumar Pradhan umesh chandra Sahoo School of Infrastructure Indian Institute of Technology BhubaneswarOdisha 752050India

Presently,there is a necessity of increasing the reclaimed asphalt pavement(RAP)content in recycling of asphalt pavements to save material cost,preserve energy and protect the environment and efforts are being made to utilize 100%RAP in the *** binder is usually stiff due to oxidation and loss of *** addition of high amount of RAP to the asphalt mix,may make it prone to fatigue *** to this reason,rejuvenators are added to restore some of the physical and chemical properties for desired performance of the *** this study,a locally available non-edible oil known as Polanga oil(biological name:Calophyllum inophyllum)has been explored as rejuvenator to study its effect on performance of the aged *** binder prepared in the laboratory using the Pressure Aging Vessel(PAV)and binder extracted from the RAP collected from a nearby source were used in this study for *** binder and RAP binder mixed with the rejuvenator at varying *** rheological characterizations in terms of flow,rutting,fatigue and creep recovery of rejuvenated PAV aged&RAP binders were carried out using a dynamic shear rheometer(DSR)to determine the optimum dosage of the *** was observed that,5 percent of Polanga oil is able to divulge the desirable rheological properties of the rejuvenated binder.

关键词： Virgin bitumen Reclaimed asphalt pavement Rejuvenator Polanga oil Aged bitumen Rheology

An efficient algorithm to clip a 2D-polygon against a rectangular clip window

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Applied Mathematics(A Journal of Chinese Universities) 2022年第1期37卷 147-158页

作者： Sushil chandra Dimri umesh Kumar Tiwari Mangey Ram Department of Computer Science and Engineering Graphic Era(Deemed to be University)DehradunUttarakhandIndia

Polygon clipping is of great importance in computer *** of the popular algorithms to clip a polygon is Cohan–Sutherland Hodgeman algorithm which is based on line ***–Sutherland Hodgeman algorithm clips the polygon against the given rectangular clip window with the help of line clipping ***–Sutherland algorithm requires traversing the polygon in anti clockwise direction(positive orientation).In this work we propose an efficient polygon clipping algorithm against a rectangular clip *** algorithm uses parametric representation of polygon *** the concept of point clipping,we can find required intersection points of edges of polygon with clip window *** suited numerical illustrations are used to explain the proposed polygon clipping *** proposed algorithm is computationally less expensive and comprehensive.

关键词： point clipping polygon clipping clip window line segment computational complexity

Recent advances on pathogenesis,diagnosis,prevention,immunological aspects,and vectors of dengue:A review

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Asian Pacific Journal of Tropical Biomedicine 2023年第8期13卷 325-338页

作者： Mahesh chandra Sahu Rakesh Kumar Samantaray Aditi Pal Sanghamitra pati Division of Medical Entomology ICMR-Regional Medical Research CentreChandrasekharpurBhubaneswar-751023OdishaIndia ICMR-Regional Medical Research Centre ChandrasekharpurBhubaneswar-751023OdishaIndia

Dengue is a vector-borne disease caused by the dengue virus(DENV)of family *** fever is common in both developed and developing ***,approximately 400 million cases of dengue fever are reported annually,resulting in approximately 22000 *** cases in India have progressively increased in the last *** recent years,substantial progress has been made in understanding various aspects of dengue,including its pathogenesis,diagnosis,prevention strategies,immunological responses,and the role of vectors in its *** transmission of a positive RNA virus occurs through Aedes mosquitoes,specifically Aedes aegypti and Aedes *** virus is associated with a wide spectrum of symptoms,ranging from mild undifferentiated fever to severe hemorrhagic fever and shock,posing a potential threat to human *** are 4 types of antigenically distinct dengue serotypes(DENV-1 to DENV-4)and among them,DENV-2 is more lethal and extremely *** overcome the severity of dengue,Dengvaxia is administered to children 9 to 16 years old with evidence of previous dengue *** diagnosis of dengue is carried out by ELISA-based non-structural protein(NS1)and immunoglobulin ***,there are no specific biomarkers to identify severe disease *** factors and temperature play an important role in complex interaction among host,vector,and virus to manifest the severity of *** is a need for the refinement of climate-based disease forecasting models in India to effectively control the spread of *** mosquito repellent should be used periodically to kill or repel the Aedes mosquito to prevent the spread of dengue in humans.

关键词： Dengue Aedes mosquitoes Insecticide NS1 Immunoglobulin

In vitro antioxidant assessment and a rapid HPTLC bioautographic method for the detection of anticholinesterase inhibitory activity of Geophila repens

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Journal of Integrative Medicine 2017年第3期15卷 231-241页

作者： umesh chandra Dash Atish Kumar Sahoo Regional Plant Resource Centre Medicinal & Aromatic Plant Division Forest & Environment DepartmentGovt. of Odisha Nayapalli Bhubaneswar 751015 India

OBJECTIVE： Geophila repens （L.） I. M. Johnst. （Rubiaceae）, a small, creeping, perennial herb, is claimed to have memory-enhancing property. The goal of this study was to assess its antioxidant and anticholinesterase activity and conduct a rapid bioautographic enzyme assay for screening acetylcholinesterase （ACHE） and butyrylcholinesterase （BChE） inhibition of G. repens extracts. METHODS： Antioxidant activity of G. repens extracts was assessed by performing 1,1-diphenyl-2- picrylhydrazyl （DPPH）, nitric oxide （NO）, superoxide （SOD）, hydroxyl （OH） and total antioxidant capacity （TAC） assays. Anticholinesterase activity was investigated by quantifying the AChE and BChE inhibitory activities of chloroform （CGR）, ethyl acetate （EGR） and methanol （MGR） extract fractions from G. repens leaves. A rapid high-performance thin-layer chromatography （HPTLC） bioautographic method for the detection of AChE and BChE inhibition was performed. RESULTS： Among all extract fractions, EGR exhibited the highest half maximal inhibitory concentration （IC50） in DPPH, SOD, NO, OH and TAC assays, with IC50 of （38.33 ± 3.21）, （45.14 ±1.78）, （59.81± 1.32）, （39.45 ± 0.79） and （43.76 ± 0.81 ） μg/mL respectively. EGR displayed competitive, reversible inhibition of AChE and BChE activities with IC50 of （68.63±0.45） and （59.45 ±0.45）μg/mL, respectively. Total phenolic and flavonoids contents of EGR were found to be 360.42 mg gallic acid equivalents and 257.31 mg quercetin equivalents per gram of extract. Phytoconstituents of the EGR extract that were inhibitors of cholinesterase produced white spots on the yellow background of HPTLC plates in the bioautographic test. CONCLUSION： The results of this study revealed that phenols and flavonoids could be responsible for the antioxidant, anticholinesterase activities of G. repens.

关键词： Geophila repens Alzheimer disease acetylcholinesterase butyrylcholinesterase fingerprint bioautographic phenolic, antioxidant

Recombinant HIV to kill latent reservoir cells: a hypothetical therapeutic strategy

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Medical Theory and Hypothesis 2022年第4期5卷 32-38页

作者： umesh chandra Hader Department of Zoology Raniganj Girls’CollegeSearsole-RajbariPaschim BardhamanRaniganj 713358West BengalIndia.

Latency is the pivotal factor that governs the long-term pathogenecity and persistence of HIV-1 *** is also the primary impediment to cure and successful treatment,resulting in patient *** of HIV-1 infection promotes failure of the conventional antiretroviral therapy(ART).Cessation of ART immediately leads to viral reactivation and attainment of viral load in peripheral *** comes with severe side effects and is ineffective at treating latent *** eliminate latent infection,alternate therapeutic strategies such as Shock and Kill,Block and Lock,gene editing and vaccination have been *** these strategies have experimentally been proven successful,they possess major ***,in this hypothesis,an alternate therapeutic strategy has been proposed to solve the threat of *** proposed model encompasses the generation and administration of recombinant HIV-1 particles whose genomes having pro-apoptotic gene,tBid,will activate apoptotic cell death pathways after infecting only the latent cells,thereby removing latent HIV host cells from patients’bodies.

关键词： HIV latency recombinant HIV tBid homologous recombination antiretroviral therapy lentiviral vectors

A Comprehensive View on the Progress of Organoid Research with an Emphasis on its Relevance to Disease Characterization

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Biomedical and Environmental Sciences 2023年第10期36卷 959-971页

作者： chandra KISHORE Vaishali Ji Saurav Mallik Ayan MUKHERJI Namrata TOMAR Soumen Kumar pati LI Ai Min Sinthia Roy BANERJEE Soumadip GHOSH Raza Ali NAQVI University of California Irvine Medical CenterOrangeCA 92868USA Department of Botany J.D.Women’s CollegeBailey RoadPatna-800023India Harvard T.H.Chan School of Public Health BostonMA 02115USA Department of Information Technology Haldia Institute of TechnologyHaldiaWest BengalIndia Medical College of Wisconsin MilwaukeeWI 53226USA Department of Bioinformatics Maulana Abul Kalam Azad University of TechnologyNadiaWest BengalIndia Center for Precision Health School of Biomedical InformaticsThe University of Texas Health Science Center at HoustonHoustonTX 77030USA School of Computer Science and Engineering Xi’an University of TechnologyXi'an 710048ShaanxiChina Department of Information Technology Guru Nanak Institute of TechnologyKolkataWest BengalIndia Department of Computer Science and Engineering Sister Nivedita UniversityKolkataWest BengalIndia Center for Precision Health School of Biomedical InformaticsUniversity of IllinoisChicago60612USA

INTRODUCTION Organoids are primary tissue or stem cells derived cell aggregates that have the capacity for self-organization,self-renewal,and the capacity to mimic cellular and tissue level *** can overcome the shortc... 详细信息

关键词： functions. overcome shortcomings

Poly(amaranth) film based sensor for resolution of dopamine in the presence of uric acid:A voltammetric study

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Chinese Chemical Letters 2010年第12期21卷 1490-1492页

作者： umesh chandra B.E.Kumara Swamy Ongera Gilbert M.Pandurangachar Sathish Reddy S.Sharath Shankar B.S.Sherigara Department of P.G.Studies and Research in Industrial Chemistry Kuvempu UniversityJnana SahyadriShankaraghattaShimoga 577 451KarnatakaIndia Department of Chemistry SSMRV Degree CollegeJayanagara 4T BlockBanglore 41KarnatakaIndia

The electropolymerized film of amaranth was prepared on the surface of graphite pencil electrode（GPE） using cyclic voltammetric *** poly（amaranth） film coated electrode exhibited an excellent electrocatalytic activity towards the detection of dopamine（DA） in the presence of uric acid（UA） in 0.2 mol/L phosphate buffer solution at pH *** effect of interference study was carried out using differential pulse voltammetric *** poly（amaranth） modified GPE was applied for the detection of DA in dopamine injection with satisfactory results.

关键词： Poly(amaranth) Graphite pencil electrode Dopamine Uric acid Sensor

Optical and Physical Analysis of Nd3. Doped Borosilicate Glasses

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材料科学与工程（中英文B版） 2015年第11期5卷 406-417页

作者： Yogesh Kumar Sharma Priyanka Goyal Sudha Pal umesh chandra Bind Department of Physics S.B.S. Govt. P. G. College Rudrapur (Kumaun University Nainital)-263153 Uttarakhand India Centre of Nano Technology Indian Institute of Technology Roorkee India

Determination of Dopamine in Presence of Uric Acid at Poly (Eriochrome Black t) Film Modified Graphite Pencil Electrode

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American Journal of Analytical Chemistry 2011年第2期2卷 262-269页

作者： umesh chandra B. E. Kumara Swamy Ongera Gilbert Sathish Reddy B. S. Sherigara 不详

A simple commercial graphite pencil electrode was used to investigate the electrochemical oxidation of dopamine. The electropolymerised film of eriochrome black t was prepared on the surface of graphite pencil electrode by using cyclic voltammetry technique. The prepared electrode exhibits an excellent electrocatalytical activity towards the determination of dopamine. The effects of concentration, pH and scan rate were investigated. Simultaneous detection of dopamine and uric acid was investigated by using both cyclic voltammetric and differential pulse voltammetry technique. The modified electrode was also used for the detection of dopamine in injection.

关键词： Poly (Eriochrome Black T) Graphite Pencil Electrode Dopamine Uric Acid Cyclic Voltammetry Differential Pulse Voltammetry