2,228 research outputs found

    Effect of Heat Transfer on Peristaltic Transport of a Johnson Segalman Fluid Through a Porous Medium in an Inclined Asymmetric Channel

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    In This paper  the influence of heat transfer on peristaltic transport of Johnson Segalman fluid in an inclined asymmetric channel are investigated theoretically and graghically .Aregular perturbation method is used to obtain the analytical solutions for the streame functions, temperature fields, axial pressure gradient, and pressure rise.The effects of the physical parameters of the problem on these distributions are discussed and illustrated graphically through a set of figures. Keywords: Johnson Segalman fluid;  Peristaltic transport; Heat transfer; Porous medium; Inclined       asymmetric channe

    Status of the shrimp sector in Bangladesh in the context of HACCP and trade issues: a review

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    Shrimp culture in Bangladesh has emerged as an important aquaculture industry over the last three decades although its culture in greater parts of the farming area is done in traditional ways. In the meantime, the government of Bangladesh has taken necessary measures along with the private sectors to increase production, upgrade processing industries and to promote export performance. Long supply chain in raw material collection, inadequate infrastructure facilities, poor level of cool chain and lack of adequate HACCP-based training on hygiene and sanitation of different groups of people involved in the field level are the main problems of quality loss of raw materials. Shortage of raw materials results in poor capacity utilization of the processing plants. The growth of bagda (P. monodon) hatchery has expanded rapidly over the last few years, remaining mostly concentrated in Cox's Bazar region is enough to meet the target production. However, there is a shortage of pelleted shrimp feed in Bangladesh. A large number of export processors are now producing increasing amounts of value-added products such as individually quick-frozen, peeled and divined, butterfly cut shrimp, as well as cooked products. The export earnings from value added products is about half of the total export value. About 95% of total fish products are exported to European countries, USA and Japan and the remaining to the Southeast Asia and the Middle East. Most of the EU approved shrimp processing industries have been upgraded with laboratory facilities and provided HACCP training to their workers. As of now, HACCP is applied on the processing plants, but to ensure the quality of raw materials and to reduce risks, shrimp farms are also required to adopt HACCP plan. There is increased pressure time to time from importing countries for fish processors to establish effective quality assurance system in processing plants. Fish Inspection and Quality Control (FIQC) of the Department of Fisheries while having moderately equipped laboratories with chemical, bio-chemical and microbiological testing facilities and qualified technical personnel, the creation of facilities for testing of antibiotics is underway. FIQC mainly supervises quality aspects of the processing plants and has little or no control over raw material supply chains from farm to processing plants. Bangladesh export consignments sometimes face rejection due to reported poor quality of the products. Three types of barriers are reported for export of shrimp to EU countries. These are:(1) government participation in trade and restrictive practices (state aid, countervailing duties, state trading enterprises, government monopoly practices), customs and administrative entry procedures (anti-dumping duties, customs valuation, classification, formalities, rules of origin); (2) technical barriers to trade or TBT (technical regulations, standards, testing, certification arrangement); (3) specific limitations (quantitative restrictions, import licensing, embargoes, exchange control, discriminatory sourcing, export restraints, measures to regulate domestic prices, requirements concerning marking, labeling and packaging)

    Lipidoptera morphological structure as a basic of toxonomy in the area of lafarge cement indonesia plant in Lhoknga, Aceh Besar Distric, Indonesia

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    .  The study of Lepidoptera that took place around the factory of Lafarge Cement Indonesia (LCI) was aimed to determine the structure of dominance of Lepidoptera and  morphological structure as basic determination of taxonomy chategory of LCI plant Lhoknga Kabupaten Aceh Besar. The study was conducted from April to June 2012. The area of the study was divided into four locations; Gunung Bale Area (location I), Gunung Badak Area (Location II), LCI factory (Location III) and Gunung Oshing (location IV). The methods were survey and capture. The structure of the dominance was analysed by dominance formula and the species was analysed descriptivelly. The findings showed that there were 13 species and 1 species with dominance index (ID)  were  0.0-0.25 and 0.26-0.50 respectivelly, and none of them with ID ˃ 0.50. The species can be potentially used as the learning media of the course were 13 species, including the morphology and anatomy of each species. The parts of the body of Lepidoptera comprising of podos, chephal, torax, abdomen, and ptera are the basic determination of the taxonomy. In brief, it was found that Lepidoptera with categories were sub-dominant and not dominant. Determination of the taxonomy relied on the various structure of morphology of each members of Lepidoptera according to examinated level of taxonomy

    Wild food trees in Eastern Nuba Mountains, Sudan: Use diversity and threatening factors

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    This study was conducted in 2010 in Eastern Nuba Mountains, Sudan to investigate ethnobotanical food and non-food uses of 16 wild edible fruit producing trees. Quantitative and qualitative information was collected from 105 individuals distributed in 7 villages using a semi-structured questionnaire. Also gathering of data was done using a number of rapid rural appraisal techniques, including key informant interviews, group discussion, secondary data sources and direct observations. Data was analysed using fidelity level and informant consensus factor methods to reveal the cultural importance of species and use category. Utilizations for timber products were found of most community importance than food usages, especially during cultivated food abundance. Balanites aegyptiaca, Ziziphus spina-christi and Tamarindus indica fruits were asserted as most preferable over the others and of high marketability in most of the study sites. Harvesting for timber-based utilizations in addition to agricultural expansion and overgrazing were the principal threats to wild edible food producing trees in the area. The on and off prevailing armed conflict in the area make it crucial to conserve  wild food trees which usually play a more significant role in securing food supply during emergency times, especially in times of famine and wars. Increasing the awareness of population on importance of wild food trees and securing alternative income sources, other than wood products, is necessary in any rural development programme aiming at securing food and sustaining its resources in the area

    Water quality of Krueng Balee in Lafarge Cement Indonesia Factory in Lhoknga Aceh Besar according to benthos biodiversity

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    The study of the quality of water of Krueng (River) Bale in Factory Environment Lafarge Cement Indonesia (LCI) in Lhoknga Aceh Besar according to benthos biodiversity was aimed to determine the species of benthos and water quality of Krueng Bale according to benthos diversity. The study area was divided into four locations that were the upstream of the tunnel (Location 1), bridge area at the south (Location 2), branch of the river area (Location 3), and the downstream of the two creeks. The study was done from April to June 2012. The method was survey and destructive sampling. The species of benthos was analysed descriptivelly and the diversity was analysed by diversity index formula (H). The results showed that there were 20 species of benthos found in the area and the index of diversity was between 1.996 and 2.652. In brief,  River Bale is still suitable as the habitat of aquatic organisms

    DINAMIKA PRAKTEK TANGGUNGJAWAB SOSIAL BANK SYARIAH (Studi Bank Muamalat Makassar)

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    Artikel ini akan mengkaji bagaimana pelaksanaan tanggungjawab sosial bank Muamalat cabang Makassar dengan melihat fungsi sosial dari bank syariah yang sangat strategis dalam upaya mewujudkan kesejahteraan masyarakat. Tanggungjawab sosial perusahaan atau dikenal sebagai Corporate Social Responsibility telah menjadi trend baru yang menarik. Pelaksanaan CSR menjadi strategi bisnis bagi bank syariah meningkatkan citra bank syariah. Sebagai tanggungjawab sosial kepada masyarakat, Bank Muamalat cabang Makassar setiap tahun melaksanakan program community development secara berkelanjutan. Pelaksanaan CSR Bank Muamalat Cabang Makassar sudah sangat baik untuk lembaga keuangan syariah khususnya perbankan syariah. Hal ini terbukti dengan adanya kegiatan CSR dan juga dengan berjalannya program-program yang berhubungan dengan sosial kemasyarakatan sehingga dapat mengurangi sedikit beban ekonomi masyarakat dengan memberikan santunan sosial keagamaan, dengan memberi bantuan pembangunan tempat ibadah, lembaga pendidikan sosial, panti asuhan yatim piatu. Dari kacamata nilai-nilai syariah, yaitu hubungan kepada Allah (hablumminallah), hubungan sesama manusia (habluminannas), dan hubungan dengan alam (hablum fil ardh), CSR yang dilaksanakan oleh Bank Muamalat Cabang Makassar memerhatikan ketiga aspek tersebut. Karena dalam setiap pelaksanaan kegiatannya, entitas tersebut selalu berkiblat pada visi dan misi-ny

    Purification and biochemical characterization of a Ca2+- independent, thermostable and acidophilic α-amylase from Bacillus sp. RM16

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    Bacillus sp. RM16 was isolated from a hot spring in Karachi and screened for the production of α- amylase. The enzyme was obtained after 72 h cultivation of strain in Luria broth containing 1% starch (w/v). Enzyme Amy RM16 was purified to electrophoretic homogeneity by a series of sequential steps including precipitation with ammonium sulfate at 70% saturation, Q-Sepharose, Phenyl Sepharose and reversed phase chromatography. The purified enzyme is made up of a single polypeptide chain of 66 kDa as established by a combination of SDS-PAGE and zymographic analysis. In our experimental conditions, a total yield of 1.35% with specific activity of 6380U/mg was obtained providing 17 fold final purification of the enzyme. Biochemical characterization of the Amy RM16 such as optimum temperature and pH, substrate specificity and enzymatic susceptibilities towards different metal ions and inhibitors were also performed. Results of these studies revealed that, the enzyme is active at wide temperature range with optimum activity at 80°C and retained 85% of the activity for 3 h at 50°C and around 50% of remaining activity for 1 h at 80°C. The enzyme showed optimum activity at pH 5.0. On the other hand, Ca+2 and EDTA (1 to 5 mM) did not significantly affect the enzyme activity. The main substrate for the enzyme was found to be starch but it could also hydrolyze raw starch, dextrin, γ-cyclodextrin and pullulan.Key words: Ca2+-independent, Bacillus sp, thermostable α-amylases, low pH profile, enzyme, raw starch digestion, HPLC

    Factorization and Nonfactorization in B Decays

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    Using NLL values for Wilson coefficients and including the contributions from the penguin diagrams, we estimate the amount of nonfactorization in two-body hadronic B decays. Also, we investigate the model dependence of the nonfactorization parameters by performing the calculation using different models for the form factors. The results support the universality of nonfactorizable contributions in both Cabibbo-favored and Cabibbo-suppressed B decays.Comment: 17 pages, 5 figures, revte

    A Parabolic Transform and Averaging Methods for General Partial Differential Equations

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    Averaging method of the fractional general partial differential equations and a special case of these equations are studied, without any restrictions on the characteristic forms of the partial differential operators. We use the parabolic transform, existence and stability results can be obtained

    Influence of Leadership Styles in Creating Quality Work Culture

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    AbstractFor many years culture has been claimed as an important element of organizational successful in the business world. Organizations take very different approaches to build quality work culture. For some organizations, quality work culture has never mattered most. But in some organizations, quality work culture is crucial to ensure the employees served a better service to the customers. The purpose of this study is to identify which leadership style creates quality work culture at financial institution. Data collected through survey and direct interviews with several executives in order to gain accurate information. The respondents were chosen among employees from first line managers up to top management. Bass and Avolio's (1995), Multifactor Leadership Questionnaire (MLQ Form 5X) was used to measure leadership styles and questions on quality work culture adopted from Geri McKeown. In addition, IFE matrix was applied to determine current work culture in the financial institutions. Findings revealed that transactional leadership had greatest influence towards quality work culture. A strong quality work culture may due to number of years the financial institutions existed in the industry. This statement was supported by a strong correlation between quality work culture and leadership styles. The strong significant relationship between leadership style and quality work culture clearly shows that transactional leadership style possessed by majority of leaders influence the level of quality work culture. The paper is hoped to contribute towards improving the quality work culture by identifying the prominent leadership style practiced by financial institutions
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