582 research outputs found

    Quality Management System In Construction

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    This paper describes the Quality Management System (QMS) concept and its application in the construction industry. A misunderstanding among the construction players on the QMS concept has become the stumbling block for its successful implementation

    Study the effect of volume fraction concentration and particles materials on thermal conductivity and thermal diffusivity of nanofluids.

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    Nanofluids, a mixture of nanoparticles and fluids, have exceptional potential to improve their effective thermal conductivity and thermal diffusivity, aluminum and aluminum oxide nanofluids with five different volume fractions of nanoparticle suspensions in different base fluids, i.e., distilled water, ethylene glycol (EG), and ethanol were prepared by mixing nanopowder and base fluids. Sonication with high-powered pulses was used to ensure the dispersion of nanoparticles in good uniformity in the base fluids. The hot wire-laser beam displacement technique was used to measure thermal conductivity and thermal diffusivity of the prepared nanofluids. The effects of the volume fraction concentration and particle materials on the thermal conductivity and thermal diffusivity of nanofluids were determined. The results showed that the thermal conductivity and thermal diffusivity increased linearly with increasing volume fraction concentration of nanoparticles in the respective base fluids. In addition, the thermal conductivity and thermal diffusivity increased faster in the Al2O3 nanofluids than in all the three base fluids

    Effect of fractional crystallyzation on composition and thermal behavior of coconut oil

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    This study was aimed to fractionate coconut oil into its high- and low-melting fractions and determine the compositional and thermal property changes. A sample of coconut oil was dissolved in acetone, and allowed to crystallize isothermally at a desired temperature to separate into the low- and high-melting components. The isolated fractions were compared to the original sample with respect to fatty acid and triacylglycerol compositions as well as thermal behavior. There were considerable deviations in the fatty acid and triacylglycerol compositions of the two components with respect to those of the original sample. As a consequence, the overall melting behaviors of the two components differed considerably from that of the original sample. In the high-melting fraction, the onset and endset were shifted toward the higher temperature region with a concurrent reduction in its melting range, and vice-versa, the onset and endset of the low-melting fraction had shifted toward the low-temperature region with an increase in its melting range. The reduction of the melting range of the high-melting fraction could make it a specialty fat for applications in confectionery

    A review on medicinal properties of saffron toward major diseases

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    The stigma of Crocus sativus, known as saffron, is one of the most expensive spices in the world. The bioactive components in saffron, picrocrocin, crocin, and safranal, have demonstrated a wide range of uses and capabilities in the medical field. This review is focused on the potential therapeutic applications of saffron on diabetes mellitus (DM), antitumor, anticancer, anti-depressant, Alzheimer’s disease (AD), cardiovascular disease (CVD), erectile dysfunction and antibacterial effects

    Discrimination of plant and animal derived MAG and DAG by principal component analysis of fatty acid composition and thermal profile data

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    A study was carried out to distinguish mono- (MAG) and di-acylglycerol (DAG) from plant lipids such as sunflower, rapeseed and soybean oil, from those derived from animal fats such as lard, goat fat and beef fat using fatty acid and thermal profile data. MAG and DAG of both plant and animal lipids were synthesized according to a chemical glycerolysis method catalyzed by sodium hydroxide. MAG and DAG of individual lipid were isolated and purified using the standard column chromatography method and subjected to fatty acid analysis by gas chromatography (GC) and thermal analysis by differential scanning calorimetry (DSC). The application of principal component analysis (PCA) to the data collected from the individual instrumental technique showed that it was possible to distinctly classify MAG and DAG of plant lipids from those derived from animal fats

    1.KAJIAN BAHASA PERHUBUNGAN MASYARAKAT DI SEMPADAN MALAYSIATHAILAND:ANALISIS PILIHAN BAHASA. 2.SALAM DALAM BEBERAPA BAHASA DI DUNIA

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    Kajian pilihan bahasa yang merentas sempadan belum pernah dilakukan, misalnya sempadan antara Malaysia dan Thailand. Kajian yang merentasi sempadan sebenarnya lebih menarik untuk diteliti kerana melibatkan aspek politik, sosioekonomi dan sosiobudaya yang berbeza. Malaysia dan Thailand misalnya menggunakan bahasa kebangsaan dan rasmi yang berbeza. Dengan ini, penutur di kedua-dua sempadan tersebut mempunyai banyak pilihan bahasa untuk berhubung, misalnya, dialek Kelantan, dialek Pattani, bahasa Thailand, bahasa Melayu standard atau mungkin bahasa Inggeris. Kajian pilihan bahasa merupakan satu penelitian awal dan hanya memberi tumpuan kepada pilihan bahasa yang dipilih oleh masyarakat di sempadan Malaysia, iaitu di negeri Kelantan apabila berhubung atau berkomunikasi dengan masyarakat Thailand di sempadan tersebut. Kebiasaannya, pelbagai aktiviti dan urusan berlaku di sempadan dua negara ini seperti perniagaan, kekeluargaan dan pelancongan. Kajian ini dilihat sangat bertepatan untuk dilakukan di sempadan Malaysia-Thailand kerana dapat menentukan bahasa perhubungan utama antara dua negara yang bersempadanan. Kajian ini berlandaskan konsep domain, berlangsung di lapangan dengan mengedarkan borang soal selidik. Secara keseluruhannya, hasil kajian ini telah memperlihatkan masyarakat di Malaysia berbeza pilihan bahasa mereka apabila mereka berkomunikasi dengan masyarakat Thailand, iaitu mereka yang berumur 20-40 tahun didapati memilih dialek Melayu Kelantan, bahasa Thai dan bahasa Cina dan mereka yang berumur 40 tahun ke atas hanya memilih dialek Melayu Kelantan sahaja. Setiap bahasa memiliki sistem salam yang cenderung berbeda antara bahasa yang satu dengan lainnya. Dalam artikel ini, dibahas sistem salam bahasa beberapa bahasa yang berada pada benua yang berbeda. Penelitian ini dilakukan dengan memperhatikan faktor geografi lingkungan masyarakat pendukung bahasa tersebut. Metode yang dilakukan dalam penelitian ini adalah gabungan dari beberapa metode penelitian bahasa dan kebudayaan yang lazim digunakan. Penggunaan salam dalam bahasa Indonesia, Korea, Magyar, Spanyol, Swedish, dan Swahili memiliki keterkaitan dengan keadaan alam daerah penuturnya. Sistem salam yang digunakan jika ditilik dari waktu pagi, siang, petang, dan malam dapat diklasifikasikan dalam dua golongan. Pertama, berdasarkan waktu tersebut dan kedua, tidak berdasarkan waktu. Kecenderungannya adalah masyarakat yang menetap di daerah yang mengalami empat musim menggunakan sistem salam tanpa berbasis pada waktu pagi, siang, petang, dan malam berdasarkan jam GMT. Kalaupun menggunakan sistem pagi, siang, petang, dan malam, didasarkan pada kapan matahari terbit, hari terang, atau gelap

    Oxidative stability of virgin coconut oil compared with RBD palm olein in deep-fat frying of fish crackers

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    The oxidative stability of virgin coconut oil (VCO) in deep fat frying at 185 ± 5°C for a total of 30 hours was evaluated and compared with that of similarly-treated RBD palm olein (RBDPO) based on changes in the peroxide value (PV), p-anisidine value (p-AV), total oxidation (TOTOX) value, total polar compound (TPC) content and color. The sample used in the frying study is a favorite Malaysian snack, fish crackers, a dried product comprising mainly of sago starch and comminuted fish. Twenty grams of the crackers were fried for 60-90 seconds in 1.5 kg of oil, 12 batches a day at an interval of 5 minutes, for five consecutive days. On each day of frying, fresh oil was added to replenish the oil used to its original volume before the next frying was carried out. Results show that there was a significant increase (P<0.05) in all the parameters tested with frying time, regardless of the oil use. However, the rate of change differed between the two oils. The highest values for peroxides (meqO2/kg) were 14.02 (initial value, 1.31) for RBDPO recorded after the third day of frying and a significantly (P<0.05) lower value of 10.07 (initial value, 3.62) for VCO over the same period of time. These represented a 10.7- and 2.8-folds increase in peroxide values, respectively, for VCO and RBDPO. The highest peroxide value for VCO (12.24) was recorded after the fourth day of frying. For p-anisidine result, the value recorded at the end of the frying period was 6.27 for RBDPO and 5.87 for VCO. The rate of increase in total oxidation (TOTOX) value was faster inRBDPO (5.19 units per day) compared to VCO (3.67 units per day) during the five consecutive days of frying. The amount of total polar compounds (TPC) in VCO (15.11%) was significantly lower (P<0.05) than that of RBDPO (19.3%). The color of the oils increased with frying time, and being initially near colorless, the change in redcolor index for VCO was far greater than for RBDPO. RBDPO did not undergo a significant red color change until the third day of frying

    Detection of animal fat contaminations in sunflower oil by differential scanning calorimetry.

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    In this study, the use of differential scanning calorimetric heating thermograms was investigated to detect the presence of lard, beef tallow, and chicken fat as contaminants in sunflower oil. Sunflower oil samples spiked separately with lard, beef tallow, and chicken fat in levels ranging from 1 to 20% (w/w) were analyzed using high performance liquid chromatography to get triacyl-glycerol profiles and differential scanning calorimetric to obtain their heating profiles. The results showed that below 20% (w/w) level of contamination, both lard and beef tallow in sunflower oil can be detected using characteristic contaminant peaks appearing in the higher temperature region (0-50°C) of differential scanning calorimetric curve. However, chicken fat contamination in sunflower oil did not show any characteristic peaks in this region, but caused changes only in the exiting thermal transitions in the low temperature region of the differential scanning calorimetric curve. Based on the characteristic differences in the peak size, shape, and position, it was also possible to make a distinction between lard and beef tallow contaminations in sunflower oil

    Key drivers in enhancing actual purchase of local brand in Saudi Arabia: Intention, patriotism, trust, family and government support

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    The study empirically investigates the important antecedents: intention, patriotism, trust, family and government support to actual purchase of local brand in Saudi Arabia.Though lot of attention is given to study the relationship between key drivers in enhancing actual purchase and intention,patriotism, trust, family and government support.But still there is a considerable confusion about how this relationship is developed and where it is directed.Each of the construct was measured on 7- point likert scale ranging from 1 strongly disagree to 7 strongly agree, where actual purchase has 6 items, intention has 8 items, patriotism has 11 items, trust has 8 items, family has 8 items and government support has 8 items.Four hundred self-administered questionnaires were distributed to target respondents among education specialists in Riyadh, Eastern Province, and Northern Borders of Saudi Arabia.252 questionnaires were completed and returned, so the response rate was 63%. The data was analyzed using Structural Equation Modeling (SEM) through AMOS 21.The goodness of fit indices of the revised structural model indicate adequate fit (GFI: 0.956, CFI: 0.984, RMSEA: 0.033, Ratio: 1.274, P-value: 0.066).The regression parameter estimates show three significant relationships between intention and patriotism (β=0.244, P-value> 0.002 and C. R=3.039), intention and family ((β=0.692, P-value = P <. 001*** and C.R=7.668), actual purchase and intention (β = 0.786, P –value = P <. 001*** and C.R = 6.904).The results show that purchase intention is positively related to consumer patriotism and purchase intention positively related to family.In addition, the results also indicate that the impacts of purchase intention on the actual purchase are significant. These results are discussed in the context of improving domestic product brand in Saudi Arabia
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