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Legumes crop rotation can improve food and nutrition security in Nepal
S Pokhrel, S Pokhrel
Agronomy Journal of Nepal , 2013, DOI: 10.3126/ajn.v3i0.9014
Abstract: An intensive review of the literatures was made to access the importance of crop rotation for sustainable agriculture in Nepal. Result shows that an appropriate crop sequences improves soil fertility, reduces fertilizer cost, controls soil erosion, makes environment healthy, increases crop yields and develop sustainable crop production in the long run. Based on the study, identification of location specific crop sequences, their extension and evaluation of the impact on food production are recommended.
Chemical control of rice whitefly (Aleurocybotus occiduus Maria) in Chitwan, Nepal
S Pokhrel, SP Pokhrel
Agronomy Journal of Nepal , 2011, DOI: 10.3126/ajn.v2i0.7520
Abstract: Effectiveness of five common insecticides was evaluated against a newly established rice insect, Whitefly ( Aleurocybotus occiduus Maria) on main season rice (var: Sabitri) at Bharatpur-10, Chitwan (350 m) in 2005. The insecticides tested were: Noorani (Chloropyrifos 50% + Cypermethrin 5% EC) @ 2ml/litre of water, Rogar @ 1.5ml/litre of water, Phoskil (monocrotophos) @ 2ml/litre of water, Furadan @ 1kg a.i/ha and Anumida (Imidacloprid 17.8% SL) @ 1ml/4 litre of water. The plant growth parameters: plant height, number of yellow and green leaves, active and dead tillers and the grain yield were recorded. Anumida (Imidacloprid 17.8% SL) provided perfect control of Whitefly and gave the highest plant height (60 vs 50 cm), highest leaf number (46.7 vs 3.7), highest tillering (4.4 folds), highest green infertile tillers (16.3 vs6.7) with highest number of ears (3.0 vs 0.0) and grain number (26.3 vs 0.0)/hill. Anumida (Imidacloprid 17.8% SL) also provided comparatively lower leaf yellowing and drying (8.5 vs 22.5) then the control. Anumida (Imidacloprid 17.8% SL) @ 1ml/ 4 liter of water is recommended against rice Whitefly however, Rogar @ 1.5 ml/litre of water, Phoskil (monocrotophos) @ 2ml/litre of water, Noorani (Chloropyrifos 50% + Cypermethrine 5% EC) @ 2ml/liter of water and Furadan @ 1kg a.i./ha also can serve the purpose. The hills not using insecticide were completely failure to produce ears and grains. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7520 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.42-55
Development of semi-synthetic diet for laboratory rearing of western corn borer (Ostrinia spp.) in Kobe, Japan
S Pokhrel, S Wijarn
Agronomy Journal of Nepal , 2010, DOI: 10.3126/ajn.v1i0.7549
Abstract: A pair wise experiment was conducted, aiming to develop an artificial diet for laboratory rearing of Ostrinia species and for understanding their developmental characteristics in the control environment in insect physiology lab, Kobe University, Japan. Eleven different diets with various recipes were tested to observe the performance of diets and to evaluate the developmental characteristics of three Ostrinia species. In general, the survival was highest with O zaguliaevi adapted nearly all diets we prepared, O furnacalis survived fairy well but none of the diet was found satisfactory for rearing O scapulalis . The period of larval stage was shortest in O zaguliaevi, longest in O furnacalis and intermediate in O scapulalis . Photoperiodism was observed with both O scapulalis and O furnacalis . The type of photoperiodoic response was a typical long day type. Different diet resulted in one hour difference in the critical photoperiod in case of O scapulalis . DOI: http://dx.doi.org/10.3126/ajn.v1i0.7549 Agronomy Journal of Nepal (Agron JN) Vol. 1: 2010 pp.103-106
Community based maize seed production in the hills and mountains of Nepal: A review
D Sapkota, S Pokhrel
Agronomy Journal of Nepal , 2010, DOI: 10.3126/ajn.v1i0.7550
Abstract: A review on the community based maize seed production and technology dissemination in Nepal was made in 2009 to know the seed production situation and technology dissemination approaches. Twenty three open pollinated maize varieties and one hybrid were released by the Nepal Agricultural Research Council (NARC) up to 2009. A number of stakeholders were involved on improved technologies dissemination, seed production and marketing. Approaches for technology dissemination include district seed self sufficiency program (DISSPRO) and community based seed production (CBSP) program. About 4500 ton of cereal seeds annually has been producing from these approaches. Approach include subsidies on source seeds, creation of revolving funds, group/co-operative formation, their mobilization for participatory varietal selection (PVS), demonstrations, training, informal research and development (IRD) kit distribution and exchange visits. In community level, activities such as community based seed production approaches, particiapatory technology development, verification and dissemination for sustainable seed production and marketing has been taken place. DOI: http://dx.doi.org/10.3126/ajn.v1i0.7550 Agronomy Journal of Nepal (Agron JN) Vol. 1: 2010 pp.107-112
Rice Whitefly (Aleurocybotus occiduus Maria), a new emerging threat of rice production and its natural control in Chitwan, Nepal
S Pokhrel, RB Thapa
Agronomy Journal of Nepal , 2011, DOI: 10.3126/ajn.v2i0.7521
Abstract: An intensive field study was carried out to identify the problem causing reddish yellowing of the rice plants, access potential natural control of the suspected pests, estimate yield losses and to suggest an immediate, environmentally safe, possible control measures. Whitefly ( Aleurocybotus occiduus Maria) was outbreak on main season rice in Chitwan valley, which affected a total of 20561 ha (Severly 177.3 ha, medium 2787.6 ha, low 6945.4 ha and mild 10691.7 ha) land, losing 9448 mt rice yield in 2003. Use of monoculture, susceptible varieties (Sabitri) and improper cultural operations, excess use of agrochemicals and unconsciousness on the population build up of pest and natural enemies were the causes of outbreak. A maximum of 1000 Whitefly nymphs /tiller were counted. Parasitoid, Encarsia sp was fond most functional natural enemy in the field. However, the population build up of the parasitoid was observed quite late. Rice plants recovered in some extent after heading when the Whiteflies were found naturally controlled. Higher the population of Whitefly proportionally decreased the tillers number/hill, fertile tillers/hill, grain weight/panicle and the grain yield/ha. Rice plants infested with high population of Whitefly (898/tiller) failed to gave rice yield, where medium population (335 / tiller) gave 1287 kg and low population (103 Whitefly/tiller) gave 3456.0 kg (30.8% less than of last year) /ha. Kanchhi Mansuli (4200 kg/ha) and Mansuli (3960 kgs/ha) were comparative tolerant varieties than the Sabitri. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7521 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.56-74
Hydroxyapatite: Preparation, Properties and Its Biomedical Applications  [PDF]
Shanta Pokhrel
Advances in Chemical Engineering and Science (ACES) , 2018, DOI: 10.4236/aces.2018.84016
Abstract: Hydroxyapatite, a naturally occurring form of calcium phosphate, is the main mineral component of bones and teeth. Natural hydroxyapatite and bone have similar physical and chemical characteristics make it biocompatible. Its porous structure resembles native bone. The biocompatibility, biodegradability and bioactivity make it extensively useful in interdisciplinary fields of sciences like chemistry, biology, and medicine. Calcium phosphate-based ceramics are of great interest as substitutes of synthetic bone graft due to their similarities in composition to bone mineral and bioactivity as well as osteoconductivity. This article gives an overview of hydroxyapatite from its preparation and properties to biomedical applications of its composites.
Clinico-bacteriological profile and antibiotic sensitivity pattern in pyodermas: A Hospital Based Study
U Paudel,S Parajuli,DB Pokhrel
Nepal Journal of Dermatology, Venereology & Leprology , 2013, DOI: 10.3126/njdvl.v11i1.7935
Abstract: DOI: http://dx.doi.org/10.3126/njdvl.v11i1.7935
Histoid leprosy with ENL reaction
K Pokhrel,R Ghimire,S Subedi
Nepal Journal of Dermatology, Venereology & Leprology , 2013, DOI: 10.3126/njdvl.v11i1.7938
Abstract: DOI: http://dx.doi.org/10.3126/njdvl.v11i1.7938
In patient dermatology: characteristics of patients and admissions in Tribhuvan University (TU) Teaching Hospital
S Parajuli,U Paudel,DB Pokhrel
Nepal Journal of Dermatology, Venereology & Leprology , 2013, DOI: 10.3126/njdvl.v11i1.7936
Abstract: DOI: http://dx.doi.org/10.3126/njdvl.v11i1.7936
MicroRNA and Its Role in Cardiovascular Disease  [PDF]
Suvash Pokhrel, Yin Guotian
World Journal of Cardiovascular Diseases (WJCD) , 2017, DOI: 10.4236/wjcd.2017.710032
Abstract: MicroRNAs play a key role in regulation of gene expression during cardiac development and cardiac remodeling. MicroRNAs that present in bodily fluids may?be?useful for screening, diagnosis or therapeutic implication as a treatment. MicroRNAs are relatively new approach targets for researchers and clinicians in today world.MicroRNAs are small noncoding RNA (ncRNA) having approximately 21 to 25 nucleotides in length, and they mainly act as a transcriptional regulators of gene expression in diverse biological processes such as cellular proliferation, differentiation, tumorigenesis to death and so on. There is no doubt that lethiferous cardiac disease is one of the most common causes of deaths worldwide.MicroRNAs may regulate in several cardiovascular pathologies, not only limited to hypertrophy, heart failure, arrhythmias, hypertension, myocardial infarction, dyslipidemias and congenital heart diseases, but in circulation and bodily fluids are potential novel biomarkers for above mentioned cardiac pathologies. Knowing abnormalities in genetic level, early and accurate detection, effective treatment and prevention is the ideal management of cardiovascular diseases in today’s world.However, every detail of an individual microRNA and their system is huge and beyond the scope of this article. Therefore, in this review we try to cover the overall major aspects of the microRNAs and its role in cardiovascular system.
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