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Search Results: 1 - 10 of 412364 matches for " M.U. Mallah "
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An Assessment of Regulatory Framework for Monitoring of Pesticides in Sindh Province of Pakistan
A.A. Khooharo,R.A. Memon,M.Y. Memon,M.U. Mallah
Journal of Applied Sciences , 2006,
Abstract: Numerous companies have entered the pesticide market in Pakistan due to windfall profits and liberal policies of the government since 1980s, when new agriculture policy was announced and the import and sale of pesticides were shifted to private sector. Easy imports, low prices and availability of a variety of pesticides are the distinct advantages of liberal policies. On the other hand, sale of substandard pesticides is a common problem of farming community due to regulatory and institutional deficiencies. This study was conducted to evaluate and to redesign regulatory framework for monitoring of pesticides by Agriculture Extension in view of stakeholders` perceptions during 2003-04. Finding of the study revealed that during three years (2000-2002) 2190 samples were tested in provincial laboratories of Sindh and 268 (12%) were declared substandard. Out of 268, 150 FIRs (56%) were lodged and 86 (32%) cases were challenged in courts while only 47 (18%) cases were decided by the courts. Majority of the stakeholders including District Officers Agriculture (100%) and Sales Executives(63%) were not satisfied with the present monitoring system for pesticides. All the Pesticide Dealers interviewed were of the opinion that pesticide companies be named in FIR when samples are declared unfit by the laboratories, because they purchase sealed pesticides from pesticide companies.
A Linear Regression Model to Study the Relationship of Pesticide Imports with Agricultural Productivity Growth in Pakistan
A.A. Khooharo,R.A. Memon,M.U. Mallah
Journal of Applied Sciences , 2006,
Abstract: The purpose of this study was to examine the import of pesticides in Pakistan since February 1980, when import and sale of pesticide was shifted to private sector and subsidy on ground spraying was withdrawn. Various pesticide registration schemes of import have been discussed and number of pesticides registered in each scheme has been reported. The pros and cons of registration schemes have been discussed. An appropriate regression model satisfying basic assumptions has been developed for the import and consumption of pesticides. Using the model estimates, it was concluded that the growth rate of pesticide import was computed to be 35% in 1981 taking 1980 as base year, 30% in 1982 taking 1981 as base year; and for subsequent years, the growth rate of pesticide import has lowered and has reached at 8% in 1999 taking corresponding preceding year as base year. The same growth rate has been calculated till 2002. The agricultural growth rate has been recorded lower than that of pesticide import excepting 1995-96, when highest agricultural growth rate of the decade was recorded to be 11.7% and with pesticide import growth rate of 10%. This indicates that the trend of using pesticide for pest control is higher when compared to agricultural growth trend.
Comparative Efficacy of Some Organic Amendments and a Nematicide (Furadan-3G) Against Root-knot on Two Local Varieties of Groundnut
Sayeeda Fatema,M.U. Ahmad
Plant Pathology Journal , 2005,
Abstract: Six treatments with organic amendments like neem oil, mustard oil cake, til oil cake, garlic extract and a chemical Furadan-3G including control were tested against root-knot on two local varieties of groundnut caused by Meloidogyne javanica. Treatment with Furadan-3G as side-dressing after 7 and 14 days of inoculation gave the best response in plant growth characters including nodulation correspondingly with the lowest number of galls, adult females and different juvenile stages of the nematode within the treated plants. Neem oil gave better effect with the reduction of galls and nematode population like that of Furadan-3G. Garlic bulb extract showed comparatively higher response in promoting plant growth and suppressing the nematode. Good effects were observed with the oil cakes of mustard and til.
Promise of translational medicine: An evidence-based therapeutics
Naidu M.U.R
Indian Journal of Pharmacology , 2011,
Parameter Selection Schemes for Web Proxy Servers and their Performance Evaluation
M.U. Kharat,Narendra S. Chaudhari
Information Technology Journal , 2005,
Abstract: Tremendous increase in number of Internet users enforces the study of bandwidth optimization parameters. Analysis of Internet uses, in the specific educational locality, has shown importance of various parameters for satisfying the requirement of users. Results based on the simulation model are presented in this study. With this approach, in present experiment, we have cached 65111 number of web documents at proxy servers so that those can be accessed locally. This leads in the saving of the Internet bandwidth required to fetch 65111 number of web objects bearing average size of 10.87 kb. The total size of these documents is 707.756 Mbytes. Effectively, the bandwidth required to fetch 707.756 Mbytes has been saved whenever there is request for these web documents. Caching web proxy servers, popularity of web objects and their reference of locality, image-storing strategies are shown to be important issues for optimizing the bandwidth utilization.
Efficient Caching Proxy Server Parameters: An Integrated Approach
M.U. Kharat,Narendra S. Chaudhari
Information Technology Journal , 2006,
Abstract: Caching web proxy server improves the performance of over all web access. Since all the parameters of efficient cache performance are time and locality dependent, no single policy of caching proxy servers is ultimate and applicable for ever. To get more and more efficient performance of caching proxies, history based analysis for a specific locality is found advantageous. Using the history based algorithm popularity of web objects was determined which then further utilized for replacement of cache objects. This approach assures service of updated documents to the clients. Soft caching was used for storing low resolution versions of images which provides efficient and effective services to the clients. Study of various formats of image storing policies have enabled us for getting memory requirements of web objects which turn is closely related to the bandwidth utilization. An integrated approach of studying caching proxy server, recording history of web access, soft caching, improve over all efficiency of web proxy servers.
The Combine Effect of Synchronous and Asynchronous E-Learning on Distance Education
Iqrar Ahmad,M.U. Bokhari
International Journal of Computer Science Issues , 2013,
Abstract: The aim of this paper is to highlight the combine effect of synchronous as well as asynchronous in E-learning environment. Both type of learning have importance in different scenario. Not one of them can fulfill whole requirement individually. Synchronous training is done in real-time with a live instructor facilitating the training. Everyone logs in at a set time and can communicate directly with the instructor and with each other. It lasts for a set amount of time - from a single session to several weeks, months or even years. Asynchronous is e-learning in the more traditional sense of the word. It involves self-paced learning, CD-ROM-based, Network-based, Intranet-based or Internet-based. It may include access to instructors through on-line bulletin boards, on-line discussion groups and e-mail.
Echocardiographic ventricular function evaluation in pulmonary valve insufficiency after surgical repair of Fallot tetralogy
Aarabi M.U,Meraji M,Mortezaeian H
Tehran University Medical Journal , 2007,
Abstract: Background: Tetralogy of Fallot is the most common cyanotic congenital heart disease. The systolic and diastolic function in both ventricles is altered even after successful corrective surgery for this defect with a transannular patch. Pulmonary regurgitation, a common complication after this treatment, is usually well tolerated in childhood. The aim of this study was to assess the combined diastolic and systolic function of both ventricles using the Doppler-derived myocardial performance index (Tei index) in patients who underwent surgical repair of tetralogy of Fallot using a transannular patch. In this article we discuss the impact of pulmonary regurgitation on right ventricular function and clinical outcome, the role of echocardiographic imaging, and current management strategies for patients with pulmonary regurgitation after this treatment. Methods: Sixty eight patients with tetralogy Fallot were studied in Shahid Rajaie referral Cardiovascular Center during 2003-2005. The studied population, 36 male and 32 female with a mean age of 7.5±4 years and a history of corrective surgery for tetralogy of Fallot using a transannular patch. These patients were randomly selected and assessed by Doppler echocardiography. Results: Fifty-seven patients (84%) had mild to moderate pulmonary regurgitation, whereas 11 patients (16%) had severe pulmonary regurgitation. Right ventricular Tei index was significantly increased in patients with severe pulmonary regurgitation compared those with mild to moderate pulmonary regurgitation (0.54±0.18 vs 0.24±0.11, P<0.01). Left ventricular Tei index was increased in patients with severe pulmonary regurgitation compared those with mild to moderate pulmonary regurgitation (0.46±0.22 vs 0.32±0.14, P<0.05). Conclusions: The findings of this study suggest that pulmonary regurgitation is a serious complication after repair of tetralogy of Fallot with a transannular patch. Delaying surgery in such patients risks irreversible ventricular function.
Isolation and Characterization of Antibacterial Peptides from the Mud-crab, Scylla serrata
M.I. Hoq,M.U. Seraj,S. Chowdhury
Pakistan Journal of Biological Sciences , 2003,
Abstract: Both induced and non-induced hemolymphs were collected from the mud-crab, Scylla serrata and were subjected to antibacterial assay to investigate the presence of inducible and constitutive antibacterial protein(s). Induction was done by injecting Escherichia coli ATCC 25922. The induced hemolymph showed antibacterial activity against a range of different strains of marine or non-marine gram-positive and gram-negative bacteria including few antibiotic resistant strains, whereas the non-induced hemolymph was not appeared to be active against those tested. The induced hemolymph was subjected to SDS-PAGE and seven proteins were detected. The molecular weight of which were in the range from 36 to 84.5 kDa. The hemolymph proteins were fractionated by gel filtration chromatography. Repeated antibacterial assay of the chromatographic fractions against previously proved hemolymph sensitive bacteria showed that only a few fractions were responsible for the activity and that the fraction purified proteins showed better activity than the crude hemolymph. Total five different proteins were present in all the fractions detected by SDS-PAGE analysis. The molecular weights were 64 kDa, 61 kDa, 56.5 kDa, 49 kDa and 36 kDa.
Toxicidade para lagartas de Phthorimaea operculella (Zell.) dos aleloquímicos 2-tridecanona e 2-undecanona presentes em tomateiro (Lycopersicon spp.)
Ventura, M.U.;Vendramim, J.D.;
Scientia Agricola , 1995, DOI: 10.1590/S0103-90161995000300009
Abstract: this research deals with the toxicity of 2-tridecanone and 2-undecanone allelochemicals, present in the grandular trichomes of lycopersicon spp., to phthorimaea operculella (zell.). the toxicity of the exsudates of l. hirsutum f. glabratum pi 134117 (ld50), of the 2-tridecanone (lethal dose: ld50and lethal concentration: lc50) and 2-undecanone (lc50) to first instar larvae of this pest were determined. the ld50value was 5.54 glands and 775.53 ng per larvae, respectively. with respect to the lethal concentration, the 2-tridecanone was more toxic than the 2-undecanone. the toxicity (cl50) of the 2-tridecanone increased with the elevation of the temperature from 27 to 32°c, but decreased with the 2-undecanone. it was concluded that these compounds can have great importance in the resistance of the tomato plant to this pest.
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