114 research outputs found
The people behind the papers – Léa Rambaud-Lavigne, Namrata Gundiah, Arezki Boudaoud and Pradeep Das
No full textInternational audienceThe shoot apical meristem is a key stem cell niche in plants, and proper stem cell maintenance is partly regulated by CLAVATA3 (CLV3). Without CLV3 meristems overgrow, but the mechanistic basis of this phenotype was unclear. A new paper in Development suggests that CLV3 modulates the physical properties of meristematic stem cells, and that these properties help shape meristem morphology. To learn more about the story behind the paper, we caught up with first author Léa Rambaud-Lavigne and corresponding authors Namrata Gundiah, Arezki Boudaoud and Pradeep Das
Sign reversals of magnetoresistance in ion-irradiated Co/Cu multilayers at high fluences
No full textEthnomedicinal knowledge on Rai community of Ramprasadrai rural municipality, Bhojpur district, eastern Nepal
No full textIn Nepal, about 7000 vascular plants are noted. Some plants are medicinally important, so need to be explore for their medicinal value. Primary data for this research was collected by interviewing respondents. Secondary data was collected by reviewing early published research works on the internet. All herbaria were identified with the help of villagers, books, the internet, and by visiting of National Herbarium and Plant Laboratories (NHPL), Nepal. 35 plant species belonging to 28 families and 35 genera were documented as medicinal plants in the study area. Among these species, more plants were found to be herbs (51%) and the most useful parts were leaves (27%). Throat pain was the most common disease cured by more plant species (8 spp.). The most-used plant species were Acorus calamus, Terminalia chebula, Zanthoxylum armatum, Swertia chirayita, Phyllanthus emblica, Ageratina adenophora, Drymaria cordata, Curcuma caesia, Amomum subulatum, and Cinnamomum camphora. The Rai community of this area is rich in knowledge of traditional medicines. Elderly persons are found to be more thinkable about the curative properties of plants, methods of preparation, and diseases diagnosis than young people. Ethnomedicinal knowledge is important for various diseases in the Rai community. Conservation and preserve these plants for future generation as well for the reasons of traditional knowledge is going extinct gradually. The main purpose of this research was to find out the medicinal plants used by the Rai community of Khoksik village in Ramprasadrai Rural Municipality-8 in Bhojpur district.
DOI: http://dx.doi.org/10.5281/zenodo.513972
Establishment of plant residues and inorganic fertilizer application for growth and yield of Vigna unguiculata (L.) in flood-affected cropland of Koshi Tappu Region, Eastern Nepal
No full textFlood increases due to an increase in river overflow which affects on abiotic and biotic factors. The preliminary study of flood-affected crops was carried out in flood-affected cropland of Koshi Tappu Region of Eastern Nepal. For the experiment the plant residues of Eichhornia crassipes and Sesbania rostrata and inorganic fertilizer were selected to examine the growth and yield in Vigna unguiculata. The appropriate treatments for the production of V. unguiculata were analyzed. Before applying treatments, soil was collected and analyzed for physicochemical, microbial biomass and available nitrogen. Soil texture, soil moisture, water holding capacity and bulk density (BD) were calculated. The parameters such as soil pH organic carbon, organic matter and total nitrogen were determined. Soil microbe increases the significance of organic carbon and soil nitrogen is correlated for growth and yield. The results showed that the combined urea and plant residue increases the highest yield. And the Eichhornia compost represents the highest leaf area index and biomass. The total pod production was found in the Echhhornia compost. The dry weight per single pod in Eichhornia fresh was 7.82 g and in Sesbania fresh was 7.42 g. It proves that the land pattern is significant for the soil organic compounds. The experiment showed that the use of plant residues enhanced the increase of physicochemical properties of soil by adding the nutrients. The combined Urea + Eichhornia supports the best growth and development of the plant.
DOI: http://dx.doi.org/10.5281/zenodo.433815
Isolation and characterization of rhizobia from the root nodule of some cultivated legume crops
No full textBiological nitrogen fixation (BNF) as a result of mutual symbiosis between the rhizobia and the cultivated legume have a vital role to balance the nutrient paucity in the soil. Modern researches shows that the BNF can be the important factors regulating and maintaining the defendable agriculture and ensuring food security especially in the developing countries. The use of artificial nitrogen fertilizers to rise crop yield is an internment farming practice, despite its unfavorable effects and hazards to the environment and human population which can be substituted by rhizobial inoculants as a bio-fertilizers. The present study was aimed to isolate and characterize the Rhizobium from the nine different selected legumes. The Rhizobium bacterium was isolated from the nodules of the nine legume plants on YEMA medium which was found to show white translucent, circular convex colonies and characterized by the non-absorption of Congo red dye. The strains were found to be fast growing except for the rhizobial strains isolated from the Soybean and cowpeas (Bradyrhizobium) which were slow growing. The various biochemical tests of the isolated strains like catalase, bromothymol blue, Urea hydrolysis were favorable while Glucose-Peptone Agar (GPA), starch hydrolysis, Citrate utilization were found to be negative. For the ability to utilize the 2% NaCl, the strains TFR showed positive growth, the strains PSR, PhVR, VUR showed the poor tolerance while the rest of the strains showed no tolerance to the 2% NaCl.
DOI: http://dx.doi.org/10.5281/zenodo.490625
Das nepalische Mikrofinanzsystem: Formelle und nichtformelle Finanzinstitutionen im Spannungsfeld zwischen Armutsbezug und wirtschaftlicher Tragfähigkeit
No full textHow to develop in third world countries a sector of viable financial institutions with sustainable financial services for the whole populace including the poor? During the 90s an answer to that question is being sought in the field of microfinance, which comprises formal and nonformal financial institutions in cooperative, communal or private ownership as well as governmental and nongovernmental national financial institutions with microsavings, microcredit and microinsurance services. The crucial issue in the current debate is the compatibility of outreach to the poor and institutional viability and sustainability. It is claimed that institutions reaching the poor at not viable, while viable institutions ignore the poor. However, there are exceptions to this rule, also in Nepal. What is their secret of sound banking practices? The project is geared to a study of the system of microfinance in Nepal concerning (a) the economic viability and financial sustainability of various types of institutions with microfinance services; (b) their outreach to the poor; (c) the compatibility of outreach and viability; and (d) the impact of the policy and legal framework on that compatibility. With support from the German Research Council, DFG, the project proposal was jointly prepared in April 1998 in Kathmandu with the project partner, the private University of Kathmandu, in cooperation with the central bank, Nepal Rastra Bank, the agricultural development bank ADBN and GTZ. These institutions plan to cooperate closely in the execution of the proposed project, expecting from the project management a catalytic role. It is expected that through the project, scholars of the Dept. of Finance of University of Kathmandu (as well as graduate students) will be enabled to analyze MFIs, coordinate research of participating institutions, provide financial management training and contribute to both the outreach and sustainability of MFIs in Nepal. -- Wie entsteht in Entwicklungsländern ein leistungsfähiger Sektor wirtschaftlich tragfähiger Finanzinstitutionen mit einem nachhaltigen Angebot von Finanzdienstleitungen für die gesamte Bevölkerung einschließlich der Armen? In den 90er Jahren wird die Antwort auf diese Frage zunehmend im Bereich des Mikrofinanzwesens gesucht. Dieses umfaßt formelle und nichtformelle Finanzinstitutionen im genossenschaftlichen, kommunalen oder privaten Eigentum sowie nationale staatliche und nichtstaatliche Finanzinstitutionen mit Dienstleistungen für Kleinsparer, Kleinkreditnehmer und Kleinversicherungsnehmer. Im Mittelpunkt der gegenwärtigen Diskussion steht die Frage nach der Vereinbarkeit von Breitenwirkung bzw. Armutsbezug und institutioneller Tragfähigkeit: Institutionen für die Armen seien nicht tragfähig, tragfähige Institutionen dagegen nicht auf Arme ausgerichtet. Allerdings gibt es Ausnahmen von dieser Regel, darunter auch in Nepal, deren Geheimnis effektiver Finanzpraktiken zu ergründen ist. Ziel des Vorhabens ist daher die Untersuchung des nepalischen Mikrofinanzwesens unter besonderer Berücksichtigung (a) der institutionellen Tragfähigkeit und Nachhaltigkeit der verschiedenen Institutionen mit Mikrofinanzdienstleistungen; (b) ihrer Breitenwirkung und Ausrichtung auf die Ärmeren; (c) der institutionenspezifischen Vereinbarkeit von Armutsbezug und wirtschaftlicher Tragfähigkeit; und (d) der institutionellen Rahmenbedingungen, die die Vereinbarkeit beeinflussen. Der Projektantrag wurde im April 1998 mit Unterstützung der DFG gemeinsam mit dem Partner, der privaten Universität Kathmandu, unter Beteiligung der Zentralbank Nepal Rastra Bank, der Agrarentwicklungsbank ADBN und der GTZ ausgearbeitet. Die genannten Institutionen erwarten von dem Projekt eine Katalysatorrolle and beabsichtigen, bei der Durchführung ihrer Forschungsaktivitäten im Bereich des Mikrofinanzwesens eng zusammenzuarbeiten. Von dem Projekt wird eine nachhaltige Qualifizierung der kooperierenden nepalischen Wissenschaftler erwartet. Sie sollten befähigt werden, eigene Untersuchungen über das Mikrofinanzwesendurchzuführen, die Untersuchungen der beteiligten und weiterer Institutionen zu koordinieren, ein Ausbildungsangebot in Finanzmanagement zu erstellen und zur Verbesserung der Breitenwirkung und der institutionellen Tragfähigkeit der Mikrofinanzinstitutionen beizutragen.
Some Medicinal Plants Uses in Ethnical Group from Biratnagar, Eastern, Nepal
No full textThis paper aims to explore of medicinal plants and their uses for the local communities in Biratnagar Nepal. We have explained here 32 medicinal plants with their habitat and part used for medicinal uses. The plants were Collected through the direct visit in a different interval of time after that plants were identified 32 species were described as their medicinal value with their plant Parts. The used of medicinal value of the medicinal plant is great Knowledge of ethnical society
Impact on the productivity of preparation on rhizobial inoculant carriers
No full textSelection of a suitable carrier material for rhizobial inoculants is essential for biofertilizers production. Locally available wastes or by-products as carrier material will increase the cost effectiveness of the inoculants preparation. Here, were evaluated four such waste materials from local ground viz. charcoal, saw dust, garden soil and sugarcane bagasse with carrier based inoculums (108 viable cells/ml) and kept at room temperature (30 ± 20C). The colony forming unit (CFU) count of each strain in different carriers was monitored every month. The charcoal, garden soil and saw dust resulted to allow a better survival of the inoculums. The viable counts in charcoal, soil, saw dust and sugarcane bagasse after 240 days of storage was recorded as 107, 106, 105 and 103 for MPR8 and 107, 105, 105 and 103 for TFR3 strains respectively. The effects of storage of carrier on plant productivity showed better plant biomass accumulation and nodulation in cases of charcoal, sawdust and garden soil. However it was insignificant with the sugarcane bagasse based inoculants.
DOI: http://dx.doi.org/10.5281/zenodo.464143
IVI sheet VARIATION IN SHORELINE MACROPHYTES AND WATER QUALITY OF BEESHAZARI LAKE, CENTRAL NEPAL: IVI Table
No full textThe research has been designed to examine the variation of macrophyte diversity with references to water parameters, which determines the ecological status of Beeshazari Lake (a Ramsar site). Field data were collected in two seasons (monsoon and winter) from 42 plots with 1 m x 1 m quadrat size, laid down at shoreline of the Beeshazari Lake, each plot being 30 m apart from adjacent plot along the lake perimeter for the quantitative analysis of the macrophytes. A total of 42 macrophytes (40 in monsoon and 31 in winter) were recorded during the sampling seasons. Poaceae was the dominant during both seasons, followed by Asteraceae and Euphorbiaceae families during monsoon, whereas Asteraceae and Polygonaceae were found to be dominant during winter seasons. On the basis of growth form, emergent macrophytes were dominant during both seasons. The Shannon-Weiner Diversity Index (SWI) value of macrophytes was higher during the winter (H = 0.98± 0.04) than monsoon (H = 0.97± 0.04). Lemna perpusilla (Importance Value Index, IVI = 22.8) was the dominant species during the monsoon and Azolla pinnata (IVI = 38.2) during the winter. Macrophytes species richness was positively correlated with temperature, pH, DO, and conductivity whereas negatively correlated with TDS during the monsoon season. Further, in the winter season, the richness was positively correlated with pH, DO, TDS, and electric conductivity, whereas negatively correlated with temperature
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