65 research outputs found

    Sustainable irrigation strategy for the Babai area in Nepal

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    Effect of Temperature, Rainfall, Cloud, and Humidity on Production of Large Cardamom in Sankhuwasabha, Nepal

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    The objective of this work was to assess the status of Large cardamom production in the past ten years and impact of meteorological parameters on production of Large cardamom in Sankhuwasabha district, Nepal. Cardamom production data of ten years are taken from statistical information on Nepalese agriculture, Ministry of Agriculture Development. Apart from this monthly data of temperature, rainfall, cloud and humidity are collected from the Department of Hydrology and Meteorology, Khadbari station. The variables under consideration are the cardamom production as a dependent variable and the temperature, cloud, humidity and rainfall as independent variables. P-values and correlation between the dependent and independent variables are calculated using MS EXCEL. Findings of the study shows that Rainfall and Humidity made a significant contribution to the rate of cardamom production forming an upward trend. Temperature gives a downward trend and possesses negative correlation with productivity. Clouds is not significantly related with the cardamom production. The implication of this study for the improvement of cardamom production was discussed

    Response of maize (Zea mays L.) hybrids to different levels of nitrogen

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    Nitrogen is one of the key factors for higher grain production of hybrid maize (Zea mays L.). The use of improved varieties and optimal use of nitrogen (N) fertilizer is important for exploiting yield potential of maize. This work was carried out to evaluate the effects of N rates on grain yield and yield attributing traits of hybrid maize. Two hybrids (RML-86/RML-96 and RML-95/RML-96) and five levels of nitrogen (120, 150, 180, 210 and 240 kg N/ha) were evaluated at research field of National Maize Research Program (NMRP), Rampur, Chitwan, Nepal in spring season of  2017 and 2018. The experiments were conducted in two factorial randomized complete block design (RCBD) with three replications under rainfed condition. The pooled analysis (2017 and 2018) showed that the highest grain yield 10.5 and 10.5 t/ha were given by hybrids RML86/RML96 and RML95/RML96, respectively with the use of 150 kg N/ha in 2017. The hybrids RML-86/RML-96 and RML-95/RML-96 produced the highest grain yield 7.49 and 7.68 t/ha, respectively with the use of 150 kg N/ha in 2018. The mean grain yield (2017 and 2018) showed that both maize hybrids produced the highest grain yield 10.5 t/ha in 2017 and 7.58 t/ha year in 2018 with the application of 150 kg N/ha. The application of nitrogen fertilizer on grain yield was found significant (P<0.05) in both years. Therefore, the application of 150 kg N/ha has significantly increased grain yield of maize, Therefore, this dose of nitrogen can be recommended for higher maize production in Chitwan, Nepal in spring season under rainfed condition

    Star varietal cube: A New Large Scale Parallel Interconnection Network

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    This paper proposes a new interconnection network topology, called the Star varietalcube SVC(n,m), for large scale multicomputer systems. We take advantage of the hierarchical structure of the Star graph network and the Varietal hypercube to obtain an efficient method for constructing the new topology. The Star graph of dimension n and a Varietal hypercube of dimension m are used as building blocks. The resulting network has most of the desirable properties of the Star and Varietal hypercube including recursive structure, partionability, strong connectivity. The diameter of the Star varietal hypercube is about two third of the diameter of the Star-cube. The average distance of the proposed topology is also smaller than that of the Star-cube

    Central Retinal Artery Occlusion Associated with Atrial Septal Defect: A Case Report

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    Introduction: Central retinal artery occlusion (CRAO) is characterized by sudden obstruction of the arterial blood flow in the retinal circulation with consequent ischemic damage to the retina resulting in vision loss. An interesting case of unilateral CRAO associated with atrial septal defect (ASD) in a young female is reported here. Case: A young female presented to emergency department with history of sudden and painless loss of vision in her right eye for one day. Her visual acuity at the time of presentation was perception of light in right eye and 6/6 in left eye. On examination, anterior segments of both the eyes were normal. However, relative afferent pupillary defect was positive in her right eye. On fundus examination, right eye showed pale retina and cherry red spot whereas left eye was unremarkable. Findings were suggestive of right eye CRAO. Ocular massage was done and oral carbonic anhydrase inhibitor was given. Patient was referred to a cardiologist for further evaluation and establishment of the etiology. All tests were within reference limit except a large ASD (secundum type with left to right shunt) with a diameter of 28 mm was revealed on transthoracic echocardiogram. Conclusion: The association between ASD and CRAO is rare. Intracardiac shunts through defect may predispose the disease. Detailed cardiac evaluation is mandatory to rule out possible causes to prevent ocular or systemic embolic events and associated morbidity

    Correlation of Alfvén Mach number with field aligned current, polar cap potential and dawn dusk electric field during Quiet and extreme solar wind conditions

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    128-138This paper has been performed to study the Alfvenic Mach number (M­A) in relation to Field Aligned Currents (FACs), Polar Cap Potential (PCV), Dawn Dusk Electric Field (Ey) during different geomagnetic conditions. The relations of M­A with FACs, PCV and interplanetary electric field (IEF)-EY not solely dependent on any solar wind parameter but also associate with prior, main, and post conditions of geomagnetic storms. This study has shown that Prior to the arrival of interplanetary shock (IS),  and  show good relationship with FAC, PCV, EFY, and solar wind parameters, as the space weather seems unperturbed. The positive correlations among the various parameters have obtained due to the merging of two different interplanetary coronal mass ejections (ICMEs) driven solar storms and consequential intense southward interplanetary magnetic field. The negative relationships among the selected parameters may have been due to the slow recovery of the IMF-Bz component. This study indicate that the preceding solar winds could be associatedon the variance of M­A of a geomagnetic event, in turn might have its effects on FACs, PCV, Ey and in other solar wind parameters

    Political economy of urban change: contestations and contradictions in urban development in Kathmandu Valley focusing on a case of Southern Part of Lalitpur Metropolitan City

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    Being one of the top ten fastest urbanizing countries in the world with almost 60% urban areas, Nepal and mostly Kathmandu valley (KV), is undergoing rapid urban transition of spatial, demographic and economic changes, especially after the restoration of democracy in 1990 and subsequent political turmoil and changes. As a capital city with opportunities like access to education, jobs, health facilities and others, KV has been constantly pulling people from different parts of the country that led to densification of the city cores and uncontrolled urban sprawl, leading to unplanned growth of the built-up areas in the peri-urban landscape. This working paper, taking a case from a southern settlement of KV called Khokana, analyses the current trend of urbanization in KV with a reference of land use in general, and examines the responses from the local Newar communities as part of the tension and contradictions brought by the urbanization process and development interventions there in. Based on ethnographic fieldwork and review of literature, this study found that there is increasing demand of land creating speculative rise in land prices espoused by the infrastructure development projects being implemented by the federal government. Ultimately, the traditional place and culture are threatened so is the alienation of local people from their land, impacting their livelihood. Also, these development projects do not have resilient plans for their negative impacts in case of natural hazards, risking the achievement of resilient development in tomorrow's cities

    Rejuvenating Star Formation Activity in an Early-type Dwarf Galaxy, LEDA 1915372, with Accreted HI Gas

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    We report a rare astrophysical phenomenon, in which an early-type dwarf galaxy (dE), LEDA 1915372, is accreting gas from a nearby star-forming dwarf galaxy, MRK 0689, and is rejuvenating star-formation activity at the center. Both LEDA 1915372 and MRK 0689 have similar brightness of MrM_{r} = -16.99 and -16.78 mag, respectively. They are located in a small group environment, separated by a sky-projected distance of 20.27 kpc (up to 70 kpc in three dimension), and have a relative line-of-sight radial velocity of 6 km/s. The observation of 21 cm emission with the Giant Metrewave Radio Telescope provides strong evidence of interaction between the pair dwarf galaxies in terms of neutral hydrogen (HI) morphology and kinematics. In particular, the HI map reveals that the two galaxies are clearly connected by a gas bridge, and the gas components of both LEDA 1915372 and MRK 0689 share a common direction of rotation. We also find that the HI emission peak deviates from LEDA 1915372 toward its optical blue plume, suggesting a tidal origin of ongoing central star formation. Our findings provide a new path to the formation of blue-cored dEs.Comment: Accepted for publication in ApJ
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