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Astible Rivularis: Bioactive Compounds and Pharmacological Functions

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Chinese Journal of Integrative Medicine 2019年第10期25卷 795-799页

作者： Sunita Timalsena Prem prasad Lamichhane Department of Pharmacology Faculty of Medicine Siriraj Hospital Mahidol University Bangkok (10700) Thailand Department of Microbiology Faculty of Medicine Siriraj Hospital Mahidol University Bangkok (10700) Thailand

Astilbe rivularis Buch. Ham., a rhizomatous perennial herb of the Saxifragaceae family, has been listed in rare species. In traditional medicine the plant has been used for the treatment of ulcer, bleeding during child birth, inflammation, body ache, diarrhea, and dysentery. This article reviews and analyses the traditional use, pharmacological activities of the corresponding bioactive compounds, and toxicological data on A. rivularis species. A. rivularis has been used across Indian subcontinent to treat various human ailments. Its extract consists of alkaloids, flavonoids, coumarins and glycosides. These extracts as well as isolated bioactive compounds demonstrated various biological activities including antimicrobial, anti-peptic ulcer, anti-inflammatory, and antioxidant activity. Toxicological studies of the extract on brine shrimp larvae demonstrated mild toxicity;however no acute toxicity in mice. Although the pharmacological effect of A. rivularis has been poorly explored, the available data validated its use in ethnomedicine. To reveal the cryptic therapeutic potential of the species, research should focus on identification and mechanistic studies of the bioactive compounds.

关键词： Astilbe rivularis ethnomedical pharmacological bioactive compounds toxicological

Study of Electronic Density of States: Zintl Alloys

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Communications in Theoretical Physics 2011年第2期55卷 362-364页

作者： Ashwani Kumar Durga prasad Ojha Post Graduate Department of Physics Andhra Loyola College

In the present work the electronic density of states of liquid,viz.,Zintli alloys,have been studied only at the composition of their maximum resistivity to have an elementary idea about the behaviors of the alloys with respect to nearly free electron *** study reveals that the anomalous electronic behavior of liquid Li-Pb,Na-Pb,Li-Sn,and Na-Sn can be attributed to the preferential ordering of unlike atoms.

关键词： alloys thermodynamics of solutions density of states phase diagram

Fabrication and functional characterization of engineered features on pyrolytic carbon

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Advances in Manufacturing 2016年第2期4卷 134-141页

作者： Vivek Bajpai Bablu prasad Ramesh Singh Department of Mechanical Engineering Indian Institute ofTechnology Bombay Powai Mumbai 400076 India Centre for Environmental Science and Engineering IndianInstitute of Technology Bombay Powai Mumbai 400076India

Engineered features on pyrolytic carbon （PyC） have been reported to improve the functional performance of the bio-implants. This paper is focused on the functional characterization of micro-features created on the surface of PyC. Two different types of micro-features （wide channels and arrayed holes） have been created by micro-electrical discharge machining （micro-EDM）. Two other micro-fea- tures （fine channels and micro-pillars） have been created by micromilling process. Coliform bacterial strain was iso- lated from a sample of water and grown on all four tex- tured. Cell growth was carried out on an unmachined surface to see the behavior of the isolated bacterial strain on the textured/non-textured surfaces. The samples were examined under SEM before and after wash to see cell growth and cell adhesion capability of the textures. The wide channels by micro-EDM show the maximum cell growth but poor cell adhesion. 184% higher cell growth has been observed on the wide channels in comparison with unmachined surface. The fine channels by micro-milling show comparatively lower growth but the cell adhesion on this surface was found excellent. 71% cells remain unwa- shed after washing of the surface having fine channel textures. It means that the channels structure shows the maximum cell growth and adhesion independent of machining process.

关键词： Pyrolytic carbon Micro-features Surfacetexturing Cell growth and adhesion

Habitat heterogeneity influences avian feeding guild composition in urban landscapes:evidence from Bhubaneswar,India

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Ecological Processes 2021年第1期10卷 418-427页

作者： Bibhu prasad Panda B.Anjan Kumar Prusty Biswajit Panda Abanti Pradhan Siba prasad Parida Environmental Sciences Department of Chemistry and BBRCITERSiksha‘O’Anusandhan(Deemed to be University)BhubaneswarOdishaIndia Department of Natural Resources Management and Geoinformatics Khallikote UniversityBerhampurOdishaIndia Department of Stem Cell Facility All India Institute of Medical SciencesNew DelhiIndia Department of Zoology School of Applied SciencesCenturion University of Technology and ManagementBhubaneswarOdishaIndia.

Background:Habitat heterogeneity clearly distinguished in terms of availability of food and habitat resources and landscape features(natural or human-modified)play a crucial role in the avian species composition and population *** examine this,a study was carried out in Bhubaneswar,India,to understand the ecological niche distinction in birds based on habitat *** sampling was conducted in 30 sampling sites covering six different habitat types in a predominantly urban landscape of Bhubaneswar for understanding the ecological niche in *** birds were classified into 11 types of foraging ***:The insectivorous guild had the highest bird species richness(181 species)and the omnivorous guild had the lowest(11 species).The piscivorous guild and wetland habitat had the strongest linkage,followed by the insectivorous guild and agricultural *** frugivorous guild was significantly correlated with forest habitats(r=0.386,p<0.01)and park and garden habitats(r=0.281,p<0.01).This urban area hosted a higher number of bird species in certain habitat types,viz.,agricultural lands(52%,115 species)and forest patches(50%,111 species).Conclusion:The present study highlights the importance of agricultural lands,forest patches,parks and gardens,and wetlands inside the cityscape for supporting *** is therefore suggested that such habitats should be conserved inside an urban area to protect native ***,the city development plan must invariably include strategies for conserving the forest patches inside the urban *** must be taken to restrain the degradation of agricultural lands and reduce their utilization for non-agricultural purposes,which will help in further reducing the bird population decline in the urban landscape.

关键词： Bird species richness Community structure Feeding guild Habitat characteristics Urban area

Wind pollination in Pinus roxburghii

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Progress in Natural Science:Materials International 2007年第1期17卷 32-38页

作者： Vinod prasad KHANDURI Chandra Mohan SHARMA Department of Forestry Mizoram University Aizawl(Mizoram)India Department of Forestry HNB Garhwal University Srinagar Garhwal-246 174(Uttaranchal)India

Stigmatic pollen load and pollen concentration in the air were studied in the natural population of Pinus roxburghii at Ashtavakra (900 m asl), in the Pauri forest division of Garhwal Himalaya, India. The results reflect diurnal pollen occurrence in P. roxburghii , with the strong significant correlations between pollen concentrations in the air and wind speed, air temperature and relative air humidity. A significant correlation was also observed between microsporangium dehiscence and pollen occurrence in the air. The maximum concentration of pollen grains in the air and higher rates of pollen deposition onto the megasporophylls were between 12 pm and 16 pm of the day, which conforms the best time for pollination in a day in P. roxburghii. The receptivity of Ovulate strobili varied from 3 to 5 days, however, the bagged strobili remained receptive up to 6 days.

关键词： ovulate strobili pollen cones pollination receptivity wind speed P. roxburghii.

Bianchi type V universe with bulk viscous matter and time varying gravitational and cosmological constants

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Research in Astronomy and Astrophysics 2012年第11期12卷 1457-1466页

作者： Prashant Singh Baghel Jagdish prasad Singh Department of Mathematical Sciences A. P. S. University

We consider spatially homogeneous and anisotropic Bianchi type V space- time with a bulk viscous fluid source, and time varying gravitational constant G and cosmological term A. The coefficient of bulk viscosity ζ is assumed to be a simple linear function of the Hubble parameter H （i.e. ζ = ζ0 ＋ ζ1H, where ζ0 and ζ1 are constants）. The Einstein field equations are solved explicitly by using a law of varia- tion for the Hubble parameter, which yields a constant value of the deceleration pa- rameter. Physical and kinematical parameters of the models are discussed. The models are found to be compatible with the results of astronomical observations.

关键词： bulk viscosity -- Bianchi V -- relativity: equation of state -- cosmology:cosmological parameters -- miscellaneous

Genetic Enhancement of Indigenous Cowpea with Gamma-Ray Induced Trait Variation

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American Journal of Plant Sciences 2024年第8期15卷 651-676页

作者： Mathurin Tiergnin Dabiré Minimassom Philippe Nikiéma Djibril Yonli Safiatou Sanna Wossoguim Josué Gouba Siébou Palé Hamidou Traoré Joseph T. B. Batieno Varra prasad Zacharia Stewart Jan B. Middendorf Abhishek Rathore Anupama J. Hingane Unit de Formation et de Recherches en Sciences et Technologies Dpartement des Sciences de la Vie et de la Terre Universit Norbert ZONGO Koudougou Burkina Faso Institut de lEnvironnement et de Recherches Agricoles (INERA) Ouagadougou Burkina Faso Department of Agronomy Kansas State University Manhattan USA Center for Agriculture-Led Growth Bureau for Resilience and Food Security United States Agency for International Development United States Agency for International Development Washington DC USA International Maize and Wheat Improvement Center (CIMMYT) ICRISAT Campus Patancheru India Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture Department of Nuclear Sciences and Applications Plant Breeding and Genetics Laboratory International Atomic Energy Agency (IAEA) Seibersdorf Vienna Austria

Production of cowpea (Vigna unguiculata (L.) Walp.), a staple legume crop in Sub-Saharan Africa, faces challenges due to biotic and abiotic constraints. Induced mutagenesis was deployed to create genetic variation in two cowpea varieties (KVX396-4-5-2D and Moussa local). The radio-sensitivity tests led to determe the lethal dose 50 (LD50) corresponding to 230 Gy and 220 Gy for KVX396-4-5-2D and Moussa local varieties, respectively. Dried seeds (M0) of each variety were gamma-ray irradiated with LD50 − 50, LD50 and LD50 + 50. M1 seeds were advanced to generate M2, M3 and M4 mutants using the single-seed-descent method. M4 mutant lines were evaluated in rain-fed conditions using a randomized complete block design to assess phenotypic differences. Data on seven qualitative and eleven quantitative traits were collected. The results indicated that the mutation induced variability in three qualitative traits: in KVX 396-4-5-2D mutant lines, with flower and seed color frequencies at 2.61% and 0.56% respectively, and pod dehiscence at a frequency of 0.24%. While in Moussa local mutants, a pod color changed at a frequency of 17%. ANOVA results revealed significant differences between mutants of both varieties for all quantitative traits, including photosynthetic parameters. Positive correlations were observed between leaf diameter and 100-seed weight, and between branch number and 100-seed weight. Hierarchical clustering revealed three clusters among KVX 396-4-5-2D mutants and six clusters among Moussa local mutants. Early maturity and high foliage were induced traits in Cluster 3 of KVX 396-4-5-2D mutants while high hundred-seed weight was induced in Cluster 6 of Moussa local mutants.

关键词： Cowpea Mutagenesis Gamma Rays Radio-Sensitivity Phenotyping

Diversity,population structure and regeneration status of arboreal species in the four sacred groves of Kushalnagar,Karnataka

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Journal of Forestry Research 2017年第2期28卷 357-370页

作者： Shwetha Bharathi A.G.Devi prasad Department of Studies in Environmental Science Universityof MysoreManasagangotriMysoreKamataka 70 006India

Assessment of tree species diversity, structure and regeneration status of four sacred groves of Kushalnagar,southern Karnataka was carried out. The random quadrat method was employed in each grove for enumeration of tree diversity and regeneration status. A total of 98 tree species belonging to 38 families were found from the sampled *** groves possess higher diversity and basal area. Some67 % of species have shown regeneration, while 17 % of species had no regeneration. Another 15 % of species were reappearing or immigrating. It is observed that increased disturbance was directly proportional to number of reappearing or immigrating species and inversely proportional to the diversity in all the sacred groves. Significant impact on diversity, species richness and regeneration status of the flora due to manifold anthropogenic activities have been recorded.

关键词： regeneration grove disturbance anthropogenic quadrat Regeneration forests sampled manifold Family

Assessment of active tectonics from geomorphic indices and morphometric parameters in part of Ganga basin

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Journal of Mountain Science 2019年第8期16卷 1943-1961页

作者： Aditya Kumar ANAND Sarada prasad PRADHAN Department of Earth Sciences Indian Institute of Technology Roorkee

Ganga river basins exposed to active erosional and deformational processes. The recurrence of landslides, floods, and seismic activities makes it more susceptible to deformational activities. The tectonic analysis using geomorphic indices and morphometric parameters will help in determining the hazard-prone area of the river basin. Geomorphic indices and morphometric parameters are calculated to investigate the role of neotectonic activities, as it acts as a controlling factor in the development of landforms in the tectonically active terrains. Neotectonic activities influence the terrain topography, which significantly affects the drainage system and geomorphological setup of the area. In this study, the assessment of active tectonics of study area was determined using Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER) Global Digital Elevation Model(GDEM) based on Geomorphic Indices(Stream Length Gradient index, Hypsometric integral, Asymmetry factor, Basin shape, Valley floor width to Valley height ratio, Mountain front sinuosity index) cumulatively with Linear, Areal and Relief morphometric parameters on 27 delineated basins of the study area. The combined classification of Relative Tectonic Activity Index(Iat) and morphometric parameters of 27 basins categorized all the zones into four different classes:Class 1 – Very High(2.21;299 km^2). The basins with tectonic activities have a consistent relationship with structural disturbances, basin geometry, and field studies. The tectonically active zonation of a part of Ganga basin using geomorphic indices and morphometric parameters suggest that it has significant influence of neotectonic activities in a part of Ganga basin.

关键词： Linear parameters Areal parameters Relief parameters Geomorphic Indices Relative Tectonic Activity Index Ganga river basins