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Search Results: 1 - 10 of 496533 matches for " M.H. Sani "
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Farm Planning Model for Sustainable Vegetable Crop Production in the Eastern Part of Kogi State, Nigeria
M.H. Sani,U. Haruna
Journal of Agronomy , 2010,
Abstract: The study examined the farm planning model for sustainable vegetable crop production in the Eastern part of Kogi State, Nigeria. Specific objectives of the study were to: identify the various cultural practice, irrigation sources and application methods and also to determine the net benefits of the farmers with respect to vegetable crop production. Multi-stage random sampling technique was used. From the study area, three local government areas were randomly selected. In each local government area, two villages each where there is extensive irrigation cultivation were purposively selected making a total of 6 villages. Samples of twenty farmers from each of the 6 villages were selected giving a total sample of 120 farmers in all. Data were collected with the assistance of trained enumerators using structured questionnaire, interview and on-the-farm observation. Farm budget planning model was used to determine the net benefits of the vegetable crop production by the farmers. The result reveals that gross total variable cost was N23, 378.59 and gross total fixed cost was 603.80 representing 97.48 and 2.52% of the gross total cost of N23, 982.39, respectively. Cost of fertilizer and fuel constitutes 30.62 and 38.38%, respectively of the gross total variable cost. The gross returns was N447,136.00 having the highest contribution margins of 51.47 and 27.86% from onion and pepper, respectively. The results of the profitability index revealed that RRI was 1,764.43%; RRFC was 70,181.75%; RRVC was 1,910.00% and CTO was 18.64. The result of RRI which is above 100% signifies that the 120 sample farmers do not require additional capital for crop production. The RRVC and RRFC were also above 100% meaning that some of the vegetable crop production inputs are high and as such needed to be subsidized in order to increase CTO of the sample farmers. The CTO has a value of 18.64 implying that for every additional Naira spent by the sampled farmers on inputs will yield about N18.64 net returns. The study recommend the need for the Government to subsidize some of the farm inputs based on the results of RRVC and RRFC which were above 100% revealing that some of the vegetable crop production inputs are high.
Amlodipine Reduce Pyrethroid Neurotoxicity in Mice
M.H. Khayatnouri
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2011.678.681
Abstract: Permethrin a synthetic pyrethroid poisons are used as insecticide. These toxins can be used insecticides in agriculture and medicine for destruction and/or eradication of ectoparasites of animals. Studies have shown that Permethrin creation seizure effects in different animals. Amlodipine, calcium channel blocker, widely used for treatment of cardiovascular diseases. Studies have shown that the calcium channel blockers are anti-convulsant effects in different animal models. The aim of this study was to determine the effect of Amlodipine on Permethrin-induced seizures in mice. In this experiment, the animals were received different doses of Amlodipine (2.5, 5, 10, 20 and 40 mg kg-1 b.wt.) intraperitoneally 30 min before intraperitoneal injection of Permethrin (200 mg kg-1 b.wt). After Permethrin injection, clonic and tonic seizures and finally, death was the fate was investigated. Results showed that Amlodipine dose dependently reduced the severity of Permethrin-induced seizures so that Amlodipine at dose of 10 mg kg-1 (the lowest, p<0.05) and 40 mg kg-1 b.wt. (the highest, p<0.001) which had anti-convulsant effects. The anti-convulsant activity of Amlodipine suggests that possibly due to antagonistic effect on voltage-dependent calcium channel.
Anti-Convulsant Effect of Diltiazem on Lindane-Induced Toxicity in Mice
M.H. Khayatnouri
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2011.666.669
Abstract: Lindane a synthetic organochlorate poisons are used as insecticide. These toxins can be used insecticides in agriculture and medicine for destruction and/or eradication of ectoparasites of animals. Studies have shown that Lindane creation seizure effects in different animals. Diltiazem, calcium channel blocker, widely used for treatment of cardiovascular diseases. Studies have shown that the calcium channel blockers are anti-convulsant effects in different animal models. The aim of this study was to determine the effect of Diltiazem on Lindane-induced seizures in mice. In this experiment, the animals were received different doses of Diltiazem (2.5, 5, 10, 20 and 40 mg kg-1 b.wt.) intraperitoneally 30 min before intraperitoneal injection of Lindane (50 mg kg-1 b.wt). After Lindane injection, clonic and tonic seizures and finally death was the fate was investigated. Results showed that Diltiazem dose dependently reduced the severity of Diltiazem-induced seizures so that Diltiazem at dose of 10 mg kg-1 (the lowest, p<0.05) and 40 mg kg-1 b.wt. (the highest, p<0.001) which had anti-convulsant effects. The anti-convulsant activity of Diltiazem suggests that possibly due to antagonistic effect on voltage-dependent calcium channel.
Responses of Different Wheat Genotypes to Drought Stress Applied at Different Growth Stages
M.H. Sangtarash
Pakistan Journal of Biological Sciences , 2010,
Abstract: Environmental stress especially drought stress can play an important role in the reduction of plant growth and development. In order to study the effects of drought stress on different growth stages of wheat, an experiment was conducted with five Iranian variety included Atrak, Red-Seed, Cross-Flat, Hirmand and Darab. A split plot design was used with drought treatment being the main plot and cultivar the subplot with three replications. Poorest yield were when drought stress was applied at flowering. It was shown that the most sensitive crop stage in terms of the total number of spikelets is at early stem elongation. Onset of the drought stress at flowering had the greatest damaging effect on seeds per spikelet. The most damaging to seed size was drought stresses applied at and just after flowering. Significant interactions occurred because Darab the highest yielding cultivar and Red-Seed the lowest yielding cultivar both showed an equal and great reduction in seed size under the drought stress while Hirmand was much less responsive. Morphological characters are likely to be affected by water stress. The results of this study indicate that if water for irrigation is scarce and needs to be conserve any saving should not be at the risk of causing drought stress around anthesis. Hirmand, while not the highest yielding cultivar is more stable over the range of moisture stresses applied and it could be considered as a parent to combine its stability with the higher yield potential of say, Darab.
Postsynaptic Alpha 2-Adrenoceptors Mediate Melanosome Aggregation in Melanophores of the White-Spotted Rabbitfish (Siganus canaliculatus)
M.H. Amiri
Pakistan Journal of Biological Sciences , 2009,
Abstract: The present investigation was undertaken to study the nature of neuro-melanophore junction in the white-spotted rabbit fish Siganus cancliculatus. In vitro experiments using split fin preparation indicated that melanophores of S. cancliculatus are highly responsive to potassium ions and adrenergic agonists. Potassium ions and the adrenergic agonists induced prompt melanosome aggregation that could be competitively blocked by yohimbine (alpha-2 specific adrenergic antagonist) and phentolamine (non-specific alpha adrenergic antagonist). The melanophore responses to repeated potassium stimulation (up to 20 stimuli) did not show any sign of fatigue. However, statistically significant enhancement was observed in responses to potassium that followed the first five stimulations. Adrenergic agonists acted in a time and concentration-dependent manner and their relative potency had the following rank order: clonidine (alpha-2 specific agonist) > norepinephrine (non-specific adrenergic agonist) > phenylephrine (alpha-1 specific agonist) > methoxamine (alpha-1-specific agonist). Yohimbine exerted a more potent inhibiting effect on norepinephrine induced melanosome aggregation compared to phentolamine. Prazosine (alpha-1 specific antagonist) had no effect on such aggregation. Chemically denervated melanophores displayed hypersensitivity to alpha-adrenergic agonists but were refractive to potassium ion stimulation. The refractivity of denervated melanophores to potassium indicates the effect of potassium ion is not direct on melanophores but it is rather through depolarization effect of potassium on the neuro-melanophore peripheral sympathetic fibers and hence release of norepinephrine. In denervated melanophores, similar to intact melanophores, only phentolamine and yohimbine but not prazosine, significantly inhibited melanosome aggregation effect of norepinephrine, indicating that norepinephrine effect is through postsynaptic alpha-2 adrenoceptors. The present data demonstrate that the nature of melanophore innervation in this teleost is adrenergic and neuro-melanophore signals mediating melanosome aggregation are transmitted through alpha-2 postsynaptic adrenoceptors.
Analysis of the Word-Initial Segment with Reference to Lemmatising Zulu Nasal Nouns
M.H. Mpungose
Lexikos , 2012, DOI: 10.5788/8-1-945
Abstract: The process of lemmatising nasal nouns in the Zulu lexicon is problematic. The traditional method is to lemmatise a Zulu lexical noun by etymological noun-stem. This practice creates difficulties in harmonising lexical nouns with their syntactic application. Most authors and dictionary-makers are inconsistent in identifying the word-initial segment which determines the letter of the alphabet under which the lexical noun should be included. Consequently, dictionary users do not find Zulu dictionaries user-friendly. This article therefore proposes the principle of "a noun without initial vowel" as a method for lemmatising Zulu nasal nouns. It concludes that it is not necessary to delve into the derivational history of a lexical noun, but rather to focus on the product of the operation of morphophonological rules. The article also suggests the need to identify the distinctiveness of the segments of a syllable and to acknowledge that identical forms of a segment do occur at different segmental positions (initial, medial and final). Finally it is argued that the Zulu nasal noun class prefix is constructed according to an open syllable pattern defined by a general CV-formula based on a VCV noun prefix open syllable pattern. Keywords: adjoined letter; compound; composite; consonant; element; etymological; evolutionary; homorganic; initial; intravowel; lemma; lemmatise; lexical; morphophonological; nasal; noun class prefix; segment; syllable; vowel Die proses van lemmatisering van nasale naamwoorde in die Zoeloeleksikon is problematies. Die tradisionele metode is om leksikale selfstandige naamwoorde in Zoeloe volgens die etimologiese naamwoordstam te lemmatiseer. Hierdie gebruik veroorsaak moeilikhede by die harmonisering van leksikale selfstandige naamwoorde met hul sintaktiese toepassing. Die meeste outeurs en leksikograwe is inkonsekwent in die identifisering van die woordinisi le segment wat die letter van die alfabet bepaal waaronder die leksikale selfstandige naamwoord geplaas moet word. Gevolglik vind woordeboekgebruikers Zoeloewoordeboeke nie gebruikersvriendelik nie. In hierdie artikel word die beginsel van "'n selfstandige naamwoord sonder inisi le klinker" dus voorgestel as 'n metode om nasale naamwoorde in Zoeloe te lemmatiseer. Daar word tot die gevolgtrekking gekom dat dit nie nodig is om op die afleidingsgeskiedenis van 'n leksikale naamwoord in te gaan nie, maar dat daar eerder gefokus moet word op die produk van die werking van die morfofonologiese re ls. Die artikel gee dit ook ter oorweging dat dit nodig is om die onderskeidende kenm
POLITICAL MOBILIZATION PROCESS OF BACKWARD CLASSES IN KARNATAKA
M.H. PRAHALLADAPPA
Indian Streams Research Journal , 2013,
Abstract: Though the powerful contradictions are existed between social, economic and political system vs. the backward castes, the mobilization has got fragmented due to internal contradictions like heterogeneous character and social stratification, class differences and political accommodation of few backward castes elite to prevent alternative political platform and to marginalize the majority of backward classes. They often violently agitate for their legitimate share in economic opportunities, educational privileges and political power. Widespread collective mobilization centered around such interests has led to organized social movements with defined ideologies and leadership, which have brought significant structural and organizational changes in the societies from where they originate.
Efficient Algorithm for Overlap-Join
M.H. Saheb
Information Technology Journal , 2011,
Abstract: This study introduces Overlap-Join which is non-equi self join that joins a table to itself with a non-equal condition for joining. Overlap-Join arises in real word queries that deal with time. Time scheduling and time tabling applications are clear examples for time overlapping, this in addition to its usage in temporal databases. JOIN is the most expensive operation in relational databases. For this reason an efficient algorithm is needed. Overlap-Join and two parameters for Overlapping; Overlap Coefficient (OC) and Span Coefficient (SC) have been defined. Three properties for overlapping has been developed and discussed. Two algorithms have been proposed. These algorithms are modified versions of two known join algorithms; the block nested-loop join and the Sort-merge join. Models for joining costs have been presented and analyzed. The modifications take advantage of the fact that overlap-Join is self-join and the sc concept. The study shows that performance of sort-merge join is not better than the performance of block nested loop join for Overlap-Join when the SC is high.
Investigation on Incidence of Marek's Disease in Broiler Flocks of some Regions in Tehran Province, Iran
Hablolvarid, M.H.
Archives of Razi Institute , 2011,
Abstract: Marek's disease (MD) is a common lymphoproliferative disease of chickens, usually characterized bymononuclear cellular infiltration in different organs. The disease is caused by a herpes virus and istransmissible. MD has been a common, important problem for poultry industry worldwide, as well as, inour country, Iran. The aim of present study was to have an estimation of the incidence of MD in broilerflocks of some major regions of chicken rearing in Tehran province (Savojbolagh, Karaj, Shahriar andVaramin). This was implemented by 35 times visiting of some poultry slaughterhouses and thoroughlyinspection of chicken's carcasses and histopathological examination of various tissues and organs ofsuspected and normal slaughtered chickens from 80 broiler flocks, that was reared in Tehran province.Gross and microscopic examinations of chickens, in four mentioned regions, showed that 24 out of 80flocks (30%) had been infected to different forms of the disease. This result indicated that MD has a highincidence in broiler flocks of Tehran province. The incidence of cutaneous, visceral and mixed cutaneousand visceral forms in these regions (four regions) was determined as 16.2%, 3.8% and 10%, respectively.Moreover, no case of nervous and ocular forms was seen in this study. The result of the current study gives a hint for the importance and losses behind the high incidence of the MD in broiler flocks of Tehran province, Iran. Further detailed study on MD in broiler flocks and on the effectiveness of available MD vaccines in reducing the incidence and losses of the disease is recommended.
Some Technological and Morphological Characteristics of Safflower (Carthamus tinctorius L.) from Iran
M.H. Pahlavani
Asian Journal of Plant Sciences , 2005,
Abstract: In this study, ten breeding lines of safflower (Carthamus tinctorius L.) from Iran were evaluated in respect to technological and morphological traits for their utilization aspects in both food industry and agricultural applications. A considerable variation was found among the genotypes for hull, protein and oil content, iodine value, plant height, seed yield per plant, number of heads per plant and 100-seed weight. Oil content of seeds had a positive and considerable correlation with Iodine value and plant height and also, a negative correlation with seed yield per plant. Also, protein content recorded the highest positive association with oil content followed by plant height. Seed yield per plant showed positive and considerable correlation with hull content and number of days to flowering and a considerable negative correlation with protein content of seeds. Our results suggest that evaluated breeding lines of safflower could be valuable materials for breeding programs in which the main goals are improving oil yield and oil quality. The low correlation between oil content and seed yield in this study implied that it is possible to improve the seed yield and oil content simultaneously in safflower. Also, the results of this study indicated that improvement of seed yield could be achieved by selection for number of days to flowering.
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