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78812019
Article
Surfactant-assisted imidacloprid intercalation of layered zinc hydroxide nitrate:synthesis, characterisation and controlled resease formulation
Norhayati Hashim
A neutrally charged insecticide, imidacloprid (IC), has been intercalated into zinc hydroxide nitrate (ZHN) with the assistance of sodium dodecylsulphate (SDS). The presence of SDS assists the intercalation of IC by forming a hydrophobic region in the interlayer gallery of ZHN. The intercalated compound, ZHN–SDS–IC, was characterised using powder X-ray difraction (PXRD), thermogravimetric analysis, Fourier transform infrared spectroscopy, elemental analysis, feld emission scanning electron microscopy, and gas sorption analysis. The PXRD studies demonstrated intercalation peaks at lower 2θ, which confrmed the intercalation of IC and SDS in the interlayer gallery of ZHN. The release and kinetic studies of ZHN–SDS–IC reveals that the IC were successfully released in controlled manner (with release time up to 1478 min), and were governed by pseudo second order kinetic model. The ZHN–SDS–IC synthesised is hopefully benefcial in overcoming the consequences of excessive usage of .....

645 hits

78822019
Article
Release behavior of dichlorprop from zn/al-ldh-dichlorprop nanocomposite into chloride, carbonate and phosphate solutions
Norhayati Hashim
A release study of dichlorprop phenoxyherbicides from the interlayer of a Zn/Allayered double hydroxide-dichlorprop nanocomposite was performed with various concentrations of sodium chloride, sodium carbonate and sodium phosphate and a mixture of sodium chloride, sodium carbonate and sodium phosphate in aqueous solution. The release study of dichlorprop showed that release is dependent on the concentration of the aqueous solution. The accumulated release percentage of dichlorprop phenoxyherbicides into the solution was found to be higher in solutions containing carbonate, phosphate, and a mixture of carbonate or phosphate anions. Confirmation of the releaseprocess was confirmed by the PXRD pattern of the powder recovered from highly concentrated solutions of sodium chloride, sodium carbonate, and sodium phosphate with basal spacing of 7.8 Å, 7.6 Å and 7.4 Å, is due to chloride, carbonate, and phosphate intercalation, respectively. The kinetic study revealed that dichlorprop release .....

557 hits

78832019
Article
Controlled release formulation of zinc hydroxide nitrate intercalated with sodium dodecylsulphate and bispyribac anions: a novel herbicide nanocomposite for paddy cultivation
Norhayati Hashim
Bispyribac (BP) anions have been successfully intercalated in the interlayer region of zinc hydroxide nitrate (ZHN) in the presence of sodium dodecylsulphate (SDS) surfactant. The physicochemical properties of the intercalation compound ZHN–SDS–BP have been characterised herein with different instrumental techniques. The intercalation of BP and SDS is clearly reflected in the PXRD analysis, based on the appearance of symmetrical, sharp and intense intercalation peaks at lower 2h with a basal spacing of 28.2–28.6 A? . The thermal studies show that the ZHN–SDS– BP nanocomposite has better thermal stability than the pristine BP. The intercalation of BP leads to significant changes in the surface area, porosity, and morphology. Nitrogen adsorption–desorption isotherms reveal that both ZHN–SDS and ZHN–SDS–BP are of Type IV. The release and kinetic studies were also carried out on the ZHN–SDS–BP, in aqueous solution of Na3PO4, Na2-SO4 and NaCl as the release media. The .....

1022 hits

78842019
Article
Knowledge management process as a predictor on the organizational performances in Dubai government departments
Nek Kamal Bin Yeop Yunus
In recent years, the concept of Knowledge Management has expanded widely in government and private sectors. The last five years have witnessed intensive discussions on Knowledge Management and its importance. The aim of this study is to examine the relationship between Knowledge Management and its aspects and its impact on the performance of the governmental institutions in the Emirate of Dubai from the point of view of the managers of these institutions. This study attempts to use the analytical descriptive method to address the subject of the research. In this light, the analytical framework drawn integrates these approaches and can be applied in empirical studies. The study uses the questionnaire in data collection, which is valid and reliable according to the Cronbach’s Alpha value. A Multiple linear regression analysis has been used to predict the OP based on KG, KSR and KST. The findings showed that KG, KSR and KST were the key predictors of OP as these explained 49.6 perc.....

717 hits

78852019
Article
Preparation of fibrillated cellulose from kenaf bast fiber using high speed homogenizer without pressure
Rosazley Ramly
The aim of the study is to characterize the fibrillated cellulose (FC), which has been extracted from kenaf bast fiber using high speed homogenizer (HSH). The FC was prepared by applying 10,000, 15,000 and 20,000 rpm of homogenization process for 10, 15 and 20 mins. Morphological observation via Field Emission Scanning Electron Microscope (FESEM) was carried out in order to observe the sur-face morphology of FC while Fourier Transform Infrared (FTIR) spectroscopy was performed to determine the changing of functional groups. Thermogravimetric Analysis (TGA) was done for thermal decomposition of FC. Results showed that the diameter of the FC from kenaf bast was determined below 100 nm. The Fourier Transform Infrared (FTIR) spectroscopy showed that lignin and hemicellulose were almost completely removed during the bleaching process at peak 1,737 cm-1. In addition, thermogravimetric analysis (TGA) displayed 272°C as the highest temperature for thermal stability of FC. In conclusion, by co.....

1084 hits

78862019
Article
Social impacts in the novel
Franklin Thambi Jose Selistus Darling
1247 hits

78872019
Article
Using interactive media to support reading skills among underachieving children
Noor Aini Ahmad
This article presents a literature review on improving reading skills, and recommendations for reading skills that prepare children for the world of tomorrow. Remediation should begin as soon as a child is diagnosed as having problems with reading. As the demand for digital know-how has dramatically increased in recent years, interactive media has become a basic tool in today’s classroom. Children with weak working memory, and with difficulties in the rapid processing of information, need to be assisted to use digital literacy skills. Underachievers usually show a gap between their functional knowledge and performance potential. In order to prevent this gap from widening, underachievers are advised to work at their own functional level to overcome their deficits. Recommendations are made which are related to interventions that use interactive media as instructional material, and which may underscore an ability or desire to perform independently and more effectively. Three canvases fo.....

1763 hits

78882019
Article
Kesedaran sensitiviti moral melalaui aktiviti analisis filem pendek: satu kajian tindakan di kelas Pendidikan Moral
Nadarajan Thambu
Sensitiviti moral merupakan unsur yang menjadi tunjang kepada sesuatu perlakuan moral. Sensitiviti moral melibatkan proses mentafsir perasaan orang lain, kemahiran empati dan patuh kepada prinsip moral. Justeru artikel ini membincangkan hasil kajian tentang potensi aktiviti menonton dan analisis filem pendek sebagai kaedah pengajaran dalam mencungkil unsur sensitiviti moral dalam kalangan murid sekolah menengah. Seramai 18 orang murid perempuan dan lelaki (tiga kumpulan berfokus) dari kelas Pendidikan Moral tingkatan empat digunakan untuk tujuan pengumpulan data. Teknik pensampelan bertujuan digunakan untuk memilih peserta kajian. Kajian ini menggunakan pendekatan kualitatif dengan reka bentuk kajian tindakan yang menggunakan kaedah temu bual, pemerhatian dan penulisan jurnal murid. Dapatan kajian menunjukkan aktiviti menonton dan analisis filem pendek dalam pengajaran dan pembelajaran Pendidikan Moral mampu mencungkil sensitiviti moral dalam kalangan murid tingkatan empat. Mempunyai s.....

2075 hits

78892019
Article
Kesahan dan kebolehpercayaan instrumen pentaksiran ekstensif modifikasi permainan kategori memadang dalam mata pelajaran Pendidikan Jasmani tahun 5
Azali Rahmat
Secara umumnya, kajian ini bertujuan untuk menentukan kesahan dan kebolehpercayaan instrumen Pentaksiran Ekstensif Modifikasi Permainan Kategori Memadang Dalam Mata Pelajaran Pendidikan Jasmani Tahun 5. Kajian ini menggunakan instrumen yang holistik dan realistik bagi menilai tahap pencapaian murid bagi permainan kategori memadang. Pentaksiran Ekstensif merangkumi penilaian domain psikomotor, kognitif, afektif dan juga elemen penaakulan (memukul dan memadang). Penilaian domain psikomotor, afektif dan elemen penaakulan dilaksanakan secara pemerhatian guru, dan bagi domain kognitif pula, penilaian kendiri dilaksanakan oleh murid. Lima sumber utama dijadikan sebagai rujukan dan panduan supaya instrumen pentaksiran yang dibina bersesuaian dengan kehendak dan keperluan kurikulum Pendidikan Jasmani. Instrumen kajian ini dibina berdasarkan Buku Teks Pendidikan Jasmani Tahun 5, Buku Panduan Pengajaran Pendidikan Jasmani Tahun 5, Dokumen Standard Kurikulum dan Pentaksiran Pendidikan Jasmani Tah.....

1792 hits

78902019
Thesis
The effects of task-based language teaching and audio-lingual teaching approach in Mandarin oral skills learning
Chua, Hui Wen
This  study  investigates  the  effects  of  Task-based  Language  Teaching  (TBLT)  and  Audio-Lingual   Teaching   Approach   (ALTA)   on  oral   skills   learning   and   learning  motivation among non-native Mandarin in Teaching Mandarin as a Third Language (TMTL).  TBLT   applied  Adaptation  of  Willis’s  TBL  Framework,  while  ALTA  applied Sar?çoban’s dialogue  memorisation. Quasi experimental design was used in the study with convenience sampling of 21  students (TBLT) and 22 students (ALTA). Simulated conversation oral test and Motivational  Strategies for Learning Questionnaire (MSLQ) were  employed.  Independent  sample  t-test  was   used  to  examine  if  there  are  any differences between the two groups, and paired sample t-test  was used to identify the differences  between  Test  1  and  Test  2  for  both  groups,  in  the   aspect  of  students’ performances. The findings showed.....

2067 hits

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