Radiation dosimeters exhibit several performance properties characterized by their precision and accuracy, linearity, dose and energy dependence, stability and spatial resolution. However, these characteristics may not be satisfied by all dosimeters. The dosimetric performances of Instadose and Thermolumniscence dosimeters (TLDs) which are the two most commonly used personal dosimeters in health care institutions were comparatively assessed under clinical settings in which a GE haulum XR 6000 X-ray machine with a frequency of 50/60 Hz was used to serially irradiate Mironinstadose and TLD 100H badges to a controlled exposure factors and readings of absorbed doses for instadose were obtained from a portable computer with internet access, while that of TLDs was obtained through heating using Harshaw 4500 automatic TLD reader at Center for Energy Research and Training (CERT), Zaria. The dose equivalent quantities measured were; Hp (10), Hp (3) and Hp(0.07) all in mSv, representing deep, ey.....

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Glassesin  the  series  30MgSO4-(70-x)  P2O5-xSm2O3 0.2 ≤x≤1.0  mol  percentwere  prepared  by  single  step melt-quenchtechniques,   thestructure,   physicalandoptical propertiesofsamarium   oxide   at   different concentrationswere   studied.The   amorphous phase   of   the   samples   was   verifiedby   X-ray   diffraction spectroscopy,  the  structural  units  were  investigated  using  Fourier Transform  Infrared, Raman  and  NMR spectroscopy where the spectra revealthe presence of symmetric, asymmetric, torsoionalandbending vibration of phosphate groups,the NMR spectra reveals the changes in Qndistributionhere discussed,thecompositional dependenceonphysical (density,  average  molar  weight,dielectric  constant,Inter-nuclear  distance, Field strength,Molar volume, Molar refractivity  etc) and optical  parameterswere determined. In  terms  of  structural modifications, there  is variation of density and molar volume, t.....

800 hits

In this paper, we present the distribution of some maximal eigenvalues that are obtained numerically from the discrete Dirichlet Boundary Domain Integro-Dierential Equation (BDIDE) operator. We also discuss the convergence of the discrete Dirichlet BDIDE that corresponds with the obtained absolute value of the largest eigenvalues of the discrete BDIDE operator. There are three test domains that are considered in this paper, i.e., a square, a circle, and a parallelogram. In our numerical test, the eigenvalues disperse as the power of the variable coecient increases. Not only that, we also note that the dispersion of the eigenvalues corresponds with the characteristic size of the test domains. It enables us to predict the convergence of an iterative method. This is an advantage as it enables the use of an iterative method in solving Dirichlet BDIDE as an alternative to the direct methods  ..

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The  purpose  of  this  study  was  to  investigate  the  effectiveness  of  six  weeks  CoBAgi  Training on coordination, dynamic balance and agility of adolescent handball players in order  to   improve  performance.  Quasi-experimental  design  with  pretest  and  posttest evaluation was used  for this study. A total of 30 adolescent handball players from SMK Lahat were chosen as  participants using purposive sampling methods. The participants were  assigned  randomly  into  two   groups  consists  of  control  group  (CG:  N=15)  and experimental group (EG: N=15). The EG  undergone CoBAgi Training three times per week for six weeks while the CG continue with their  normal standard training program. Carioca Test was used to measure coordination, Star Excursion  Balance Test (SEBT) was used to measure dynamic balance and L-Run Test was used to measure agility.  Pretest and posttest of SEBT Test score, Carioca Test score and L-Run Te.....

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This study highlights the daily consumption of spices in human diet and the potential of aflatoxin B1 (AFBI) contamination which attributable to the risk of developing liver cancer. All the AFBI contamination data in spices from various studies in Malaysia were considered for calculation of risk assessment by dietary exposure and margin of exposure (MOE). The mean dietary exposure to AFB1 ranges from 0.21-1.32 ng/kg-bw/day (overall mean, 0.59 ng/kgbw/day), and 12.27 ng/kg-bw/day was the highest reported level of AFBI contamination. The MOEs derived from these dietary exposures at a benchmark dose lower confidence limit (BMDL10) of 0.305 µg/kg-bw/day were 230-1,450 (overall mean, 520). The MOE of less than 10,000 indicates the risk of AFBI contamination in spices should be a high priority for risk management actions. Based on the tolerable daily intake (TDI) in Asia of 0.11-0.19 ng AFB1/kg-bw/day for liver cancer risk per 100,000 populations, the overall mean of 0.59 ng/kg-bw/day repre.....

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Safety assessment for traditional herbal medicinal products such as “jamu” and “makjun” in Malaysia include the laboratory tests for heavy metals, microbiology and scheduled poisons. Test for aflatoxins is not included. Aflatoxin B1 (AFB1) is genotoxic and carcinogenic. Its possible contamination in these products should be ruled out. In this study, 12 samples of “jamu” and “makjun”, analyzed using IAC clean-up and HPLC were found to have a mean levels of positive samples (incidence) as 0.97 (17%), 0.24 (17%), 0.92 (8%), 0.30 (8%) and 1.82 (17%) µg/kg, and the range was 0.94 - 0.99, 0.06 - 0.42, 0.92, 0.30 and 1.00 - 2.63 µg/kg, for AFB1, AFB2, AFG1,AFG2 and total AF, respectively. Low contamination level might be attributed to the antifungal effects of some medicinal herbs.  ..

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While tertiary education provides many benefits to the individual, the community and the nation, we cannot deny that the cost is high and continues to rise each year. The younger generation have to take up loans to finance their study costs and then they have to pay back  the loans after completing their studies. As such, the funds from the parents can be seen as an alternative which could help in realizing the tertiary education goal. The question is, do the parents realize and know the importance of tertiary education savings? Have they saved for their children’s education? How much do they save per month? Are the savings enough for their children’s university education? What is the savings medium utilized to make savings? Therefore, this paper focuses on two main objectives. The first objective is to identify the patterns of children's tertiary education savings among parents in Malaysia and the second objective is to determine the medium of saving used by parents to save their.....

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This work reports the synthesis, characterization and in vitro response of a novel chitosan-hydroxyapatite composite doped with magnesium. Hydroxyapatite (HA), magnesium doped HA, chitosan-hydroxyapatite composite and the novel magnesium doped chitosan-hydroxyapatite composite were synthesised using coprecipitation method. The effects of magnesium and chitosan incorporation on the structural properties of the samples were studied by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Bioactivity studies of the samples in simulated body fluid (SBF) was carried out. The incorporation of magnesium and chitosan into the lattice of the HA reduced the crystallinity and crystallite size of the HA. The chemical composition of the novel magnesium doped chitosan-HA composite was found to have resemblance to that of bone mineral. The novel material showed good bioactivity in SBF.     ..

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This study was conducted to test the validity and reliability of Strategical Instrument on Memorizing al-Quran (ISMEQ) using Rasch Measurement Model that was aided with the Winstep 3.72 software. This instrument contains 54 items that consist of four construct and 10 sub-construct. The first construct was the objective strategy with two sub-construct which were the ability to memorize with a given timeline and the ability to memorize by per page a day. Meanwhile, the second construct was planning strategy with a sub-construct that consist of prior, during and after memorizing planning. The third construct was memorizing enforcement activity with two sub-construct which were preservation of hafazan and practice. Then, the fourth construct was effective strategy with four sub-construct whichconsist of internal and external motivational, interest and behavior. This study was conducted  on 31 SMA Imtiyaz Besut students and 55 students from SMKA Kota Kinabalu. The result from this study sh.....

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This study was conducted to test the validity and reliability of Strategical Instrument on Memorizing al-Quran (ISMEQ) using Rasch Measurement Model that was aided with the Winstep 3.72 software. This instrument contains 54 items that consist of four construct and 10 sub-construct. The first construct was the objective strategy with two sub-construct which were the ability to memorize with a given timeline and the ability to memorize by per page a day. Meanwhile, the second construct was planning strategy with a sub-construct that consist of prior, during and after memorizing planning. The third construct was memorizing enforcement activity with two sub-construct which were preservation of hafazan and practice. Then, the fourth construct was effective strategy with four sub-construct which consist of internal and external motivational, interest and behavior. This study was conducted on 31 SMA Imtiyaz Besut students and 55 students from SMKA Kota Kinabalu. The result from this study sho.....

1034 hits