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Electron-acoustic supernonlinear waves and their multistability in the framework of the nonlinear Schrödinger equation

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Communications in Theoretical Physics 2020年第7期72卷 71-80页

作者： Alireza Abdikian Jharna tamang Asit Saha Department of Physics Malayer UniversityMalayer 65719-95863Iran Department of Mathematics Sikkim Manipal Institute of TechnologySikkim Manipal UniversityMajitarRangpoEast-Sikkim 737136India

Finite-amplitude supernonlinear electron-acoustic waves(EAWs)are investigated under the nonlinear Schrödinger(NLS)equation in a plasma system that is composed of cold electronfluid,immobile ions and q-nonextensive hot *** the wave transfiguration,the NLS equation is deduced in a dynamical *** presence of finite-amplitude nonlinear and supernonlinear EAWs is shown by phase plane *** effects of the nonextensive parameter(q)and the speed of waves(v)on different traveling wave solutions of EAWs are ***,by introducing a small external periodic force in the dynamical system,multistability behaviors of EAWs under the NLS equation are shown for the first time in classical plasmas.

关键词： electron-acoustic wave dynamical system phase plane analysis nonextensive plasma

Comparative study of polyhydroxyalkanoates production from acidified and anaerobically treated brewery wastewater using enriched mixed microbial culture

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Journal of Environmental Sciences 2019年第4期31卷 137-146页

作者： Pravesh tamang Rintu Banerjee Stephan K?ster Regina Nogueira Institute for Sanitary Engineering and Waste Management Leibniz Universitat Hannover Welfengarten 1D-30167 HannoverGermany Indian Institute of Technology Kharagpur Department of Agricultural and Food Engineering721302 KharagpurIndia

The production of polyhydroxyalkanoates(PHA) from wastewaters using microbial mixed cultures(MMC) has been attracting increased interest because of PHA's biodegradability characteristics. Production of PHA by an MMC enriched with PHA-accumulating bacteria was compared using anaerobically treated and acidified brewery wastewaters under various feeding strategies, namely pulse and batch feed addition. To obtain an enriched MMC, a sequencing batch reactor was inoculated with activated sludge fed with acetate and subjected to aerobic dynamic feeding. The enriched MMC was able to accumulate PHA up to 72.6% of cell dry weight(CDW) with pulse addition of acetate controlled by the dissolved oxygen(DO) concentration in the reactor. In a batch accumulation experiment with acetate,the PHA content achieved(28.5% CDW) was less than that of the pulse feeding strategy with the same amount of acetate(～2000 mg C/L). Using anaerobically treated and acidified brewery wastewater fed in pulses, the maximum PHA accumulated by the enriched MMC was similar for both wastewaters(45% CDW), in spite of the higher volatile fatty acid concentration in acidified brewery wastewater. The pulse feed addition controlled by the DO concentration was difficult to implement for wastewater as compared to acetate because the difference in DO concentration between substrate availability and depletion was low. For the batch addition of acidified wastewater, a slightly lower PHA content(39%CDW) was obtained. These results show that both brewery wastewaters can be utilized for PHA production with a similar maximum PHA storage capacity.

关键词： Polyhydroxyalkanoates PHA-accumulating bacteria Microbial mixed culture Brewery wastewater Aerobic dynamic feeding Pulse feeding and batch feeding

Superperiodicity,chaos and coexisting orbits of ion-acoustic waves in a four-component nonextensive plasma

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Communications in Theoretical Physics 2020年第11期72卷 87-98页

作者： Asit Saha Jharna tamang Guo-Cheng Wu Santo Banerjee Department of Mathematics Sikkim Manipal Institute of TechnologySikkim Manipal UniversityMajitarRangpoEast-Sikkim 737136India Data Recovery Key Laboratory of Sichuan Province College of Mathematics and Information ScienceNeijiang Normal UniversityNeijiang 641100China Department of Mathematical Sciences "Giuseppe Luigi Lagrange"Politecnico di TorinoCorso Duca degli Abruzzi 24TorinoItaly

Superperiodicity,chaos and coexisting orbits of ion-acoustic waves(IAWs)are studied in a multi-component plasma consisting of fluid ions,q-nonextensive cold and hot electrons and Maxwellian hot *** significant impacts of the system parameters on superperiodic and nonlinear periodic IAWs are *** an external periodic perturbation various types of quasiperiodic and chaotic features for IAWs are studied in different parametric ranges through time series’plots,phase spaces and Lyapunov *** has been observed that there exist some coexisting orbits for *** orbits for IAWs in a classical electron-positron-ion plasma system are reported.

关键词： dynamical system supernonlinear periodic wave quasiperiodicity multistability

Bamboo resources of Sikkim Himalaya: diversity, distribution and utilization

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Journal of Forestry Research 2014年第4期25卷 929-934页

作者： Deo Kumar tamang Dinesh Dhakal D. G. Shrestha Sikkim State Remote Sensing Application Centre Sikkim State Council of Science and Technology Development Area Gangtok 737101 Sikkim

We recorded 8 genera and over 30 species of bamboo in Sikkim of the reported 23 genera and 125 species in Indi＆ Thirty percent of bamboo species were recorded in tropical forests （0-900 m）, 40% of species in sub-tropical forests （900-1,800 m）, 17% of species in temper- ate forests （1,800-2,700 m）, 9% of species in sub-alpine forests （2,700-3,500 m） and 4% of species in alpine vegetation （3,500-4,500 m）. Bamboo is used for various purposes and its versatility qualifies it to be a multiple-use alternative to timber, food for villagers and for tribal in particular. Bamboo is also equally important to Red Panda （Ailurusful- gens）, the state animal of Sikkim. We develop a list of bamboos occur- ring in Sikkim with their vernacular names, distributions and uses in the Himalayan state. However, more extensive study is required to fully describe the bamboo diversity of the Himalayan state.

关键词： bamboo Dendrocalamus diversity uses Sikkim

Flammulina yunnanensis(Agaricales),a new record from Darjeeling Hills,India

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Studies in Fungi 2022年第1期7卷 85-88页

作者： Alisha Thapa Juna tamang Krishnendu Acharya Molecular and Applied Mycology and Plant Pathology Laboratory Department of BotanyUniversity of CalcuttaKolkata 700019India Department of Botany Bangabasi Evening College19 Raj Kumar Chakraborty LnBaithakkhanaKolkataWest Bengal 700009India

Morphological and phylogenetic studies were carried out on the collected specimen of Flammulina yunnanensis.A detailed morphological description along with field images and ITS(internal transcribed spacer region)sequence analyses suggested that the collected specimen is *** has a hymeniform suprapellis with clavate-shaped terminal elements without ixohyphidia which is a distinguishing feature amongst other species of the genus *** yunnanensis is recorded for the first time in India.

关键词： Flammulina supra record

Bamboo stumps as mosquito larval habitats in Darjeeling Himalayas, India： A spatial scale analysis

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Insect Science 2008年第3期15卷 245-249页

作者： Gautam Aditya Rakesh tamang Dipendra Sharma Francis Subba Goutam K. Saha Department of Zoology Darjeeling Govemment College Darjeeling 734101 Department of Zoology University of Calcutta 35 Ballygunge Circular Road Kolkata 700019 Department of Zoology the University of Burdwan Golapbag Burdwan 713104 India

Bamboo stumps can be a congenial breeding habitat of the mosquitoes. In view of this, a preliminary assessment of the dipteran immatures inhabiting the stumps of bamboo groves in the Darjeeling Himalayas was carded out at a spatial scale. Of the 104 stumps of Dendrocalamus hamiltoni surveyed, 70 were found to host immatures of three dipteran species, the mosquitoes Aedes aegypti and Culex quinquefasciatus and the midges Chironomus sp. in varying densities. Though the stumps varied in diameter, in each stump on average 12. 1 immatures were found. The abundance of the immatures was positively correlated with the diameter of the stumps （r = ＋0.382; P 〈 0.001） but negatively with the pH of the water present in the stumps （r = -0.336; P 〈 0.01）. The coefficient of association was found to be ＋8.4 for the Ae. aegypti and Chironomus immatures, while in the rest of the species pair the association seemed to be independent. Thus it can be concluded that the stumps in the bamboo groves of Darjeeling Himalayas provides a favourable habitat for the mosquito and chironomid immatures.

关键词： Aedes aegypti bamboo stumps Chironomus sp. Culex quinquefasciatus,Darjeeling interspecific association phytotelmata

Mucosal healing and inflammatory bowel disease:Therapeutic implications and new targets

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World Journal of Gastroenterology 2023年第7期29卷 1157-1172页

作者： Megan Lynn Otte Raju Lama tamang Julia Papapanagiotou Rizwan Ahmad Punita Dhawan Amar B Singh Department of Pathology and Microbiology University of Nebraska Medical CenterOmahaNE 68198United States Department of Biochemistry and Molecular Biology University of Nebraska Medical CenterOmahaNE 68198United States

Mucosal healing(MH)is vital in maintaining homeostasis within the gut and protecting against injury and *** factors and signaling pathways contribute in a dynamic and coordinated manner to maintain intestinal homeostasis and mucosal regeneration/***,when intestinal homeostasis becomes chronically disturbed and an inflammatory immune response is constitutively active due to impairment of the intestinal epithelial barrier autoimmune disease results,particularly inflammatory bowel disease(IBD).Many proteins and signaling pathways become dysregulated or impaired during these pathological conditions,with the mechanisms of regulation just beginning to be ***,there remains a relative lack of broadly effective therapeutics that can restore MH due to the complexity of both the disease and healing processes,so tissue damage in the gastrointestinal tract of patients,even those in clinical remission,*** increased understanding of the molecular mechanisms of IBD and MH,tissue damage from autoimmune disease may in the future be ameliorated by developing therapeutics that enhance the body’s own healing *** this review,we introduce the concept of mucosal healing and its relevance in IBD as well as discuss the mechanisms of IBD and potential strategies for altering these processes and inducing MH.

关键词： Inflammation Injury/repair Mucosal healing Mucosal barrier Therapeutics Colitis

Frontier Analysis of Nepalese Commercial Banks： DEA Approach

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Journal of Mathematics and System Science 2014年第10期4卷 675-682页

作者： Sunity Shrestha Hada Govinda tamang Central Department of Management Tribhuvan University Nepal

The efficiency of any organizations at manufacturing sector or service sector, profit making or non-profit making, is most important factor for survival and growth of the organization. The Data Envelopment Analysis （DEA） technique is one of the most popular and effective tool to measure relative efficiency hence is appropriate to make comparison among similar organizations with multiple output and input. This study performs frontier analysis and measures the relative efficiency of Nepalese commercial banks using DEA approach with two output and two input variables.

关键词： Data envelopment analysis frontier analysis commercial banks relative efficiency

A Single Bundle Anterior Cruciate Ligament Reconstruction (ACL-R) Using Hamstring Tendon Autograft and Tibialis Anterior Tendon Allograft:A Comparative Study

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Current Medical Science 2018年第5期38卷 818-826页

作者： Saroj Rai Sheng-yang JIN Bimal RAI Nira tamang Wei HUANG Xian-zhe LIU Chun-qing MENG Hong WANG Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Radiology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China School of Nursing Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China National Trauma Center National Academy of Medical SciencesKathmandu 44600Nepal

The main purpose of this study patients undergoing a single bundle anterior was to compare the clinical outcomes of cruciate ligament reconstruction (ACL-R) of using quadrupled hamstring (4HT)autografts and two-strand tibialis anterior (2TA) aUografts,and to find out the rate of graft failure and possible *** hypothesized that there would be no difference in the clinical outcome,and graft failure would be associated with the use of small sized allograft in young active males with high demand of sports *** retrospectively evaluated 222 patients (male,n=167,female,n=55) undergoing ACL-R between January 2010 and July *** 222 patients,115 were included in the 4HT autograft group and 107 patients in the 2TA allograft *** criteria were primary unilateral ACL-R with a minor MCL (

关键词： anterior cruciate ligament reconstruction autograft allograft hamstring tendon tibialis anterior tendon