23 research outputs found
100 persoalan mengenai kesihatan gigi dan gusi
No full textBuku 100 Persoalan Mengenai Kesihatan Gigi dan Gusi ialah garapan penulisan usaha sama para penulis yang merupakan graduan Ijazah Sarjana Muda Doktor Pergigian, Universiti Kebangsaan Malaysia. Tujuan utama buku ini ditulis untuk memberikan penjelasan kepada permasalahan pergigian serta penyakit gusi yang sering berlaku dalam kalangan masyarakat. Skop penulisan buku ini mencakupi pelbagai perkara asas dalam penjagaan kesihatan gigi dan gusi, antaranya termasuklah kaedah memberus gigi dengan betul, penggunaan ubat gigi yang sesuai, peralatan lain yang boleh digunakan dalam memastikan ruang mulut sentiasa bersih, dan penjagaan gigi serta gusi yang lebih komprehensif, khususnya kepada mereka yang memakai pendakap gigi atau braces. Selain itu, buku ini juga menyentuh berkenaan gigi yang berlubang serta penyakit gusi yang boleh dihidapi oleh seseorang jika tidak menjaga kebersihan mulut dengan baik. Penyakit gusi mempunyai beberapa peringkat mengikut tahap keterukan jangkitan ke atas tisu penyokong gigi sehingga menyebabkan gigi menjadi goyang dan tidak boleh diselamatkan. Masalah yang berlaku ini disebabkan keadaan tisu penyokong gigi yang semakin berkurangan. Terdapat pelbagai rawatan untuk mengatasi masalah pergigian dimuatkan di dalam buku ini sebagai panduan dan rujukan kepada pembaca. Buku ini sesuai untuk dibaca oleh semua peringkat usia sehinggalah kepada warga emas kerana kandungannya yang relevan kepada semua golongan masyarakat. Kandungan buku ini disusun mengikut bab berdasarkan cara penjagaan gigi dan gusi, permasalahan gigi dan gusi, rawatan yang sesuai, pemakaian pendakap gigi serta permasalahan pergigian dalam kalangan kanak-kanak. Setiap persoalan yang dikemukakan dalam setiap bab telah distrukturkan supaya lebih memfokuskan permasalahan yang paling sering berlaku dalam kalangan masyarakat.
Dr. Intan Suhana Munira Mat Azmi
Dr. Wan Noor Nazayan Wan Nik
Dr. Zubaidah Ismai
Development of magnetorheological elastomers based on Deproteinised natural rubber as smart damping materials
No full textMempercepatkan proses pendaftaran transit selepas waktu pejabat di kolej kediaman UiTM Kampus Teluk Intan
No full textPendaftaran transit dari pelajar Fakulti Perubatan UiTM Kampus Sungai Buloh dan Selayang dilakukan pada hari sabtu atau ahad sepanjang tahun. Staf perlu bekerja setiap hari sabtu atau ahad sepanjang tahun untuk pendaftaran pelajar transit. Staf bekerja menunggu kehadiran pelajar dari jam 8 pagi sehingga 10 malam. Kekerapan pelajar tiba lewat adalah tinggi dan menyebabkan staf perlu menunggu lama sehingga kesemua pelajar tiba dengan selamat di kampus. Selepas ketibaan pelajar staf UPK Teluk Intan perlu menghantar laporan kehadiran pelajar transit di teluk intan kepada Pengurusan UiTM Kampus Sg Buloh dan Rektor UCS
Prediction of alcohol consumption among Portuguese secondary school students: A data mining approach
No full textImproving heat ageing and thermal properties of silicone rubber using montmorillonite clay
No full textHeat ageing and thermal stability of a silicone rubber (SR) filled with montmorillonite clay (MMT) was investigated.
Three types of rubber nanocomposites were prepared with hig hly exfoliated Cloisite 30B (SR/C30B), intercalated/exfoliated Cloisite
Na
1
(SR/Na
1
MMT), and highly intercalated Cloisite 20A (SR/C20A). This study showed that the SR/C30B nanocomposite exhibited
excellent heat resistance in comparison to the other two nanocomposites and neat SR as revealed by higher retention strength. The
thermal stability of the rubber in air was strongly dependent on the clay morphology and increased in the following order: highly
intercalated/exfoliated SR/Na
1
MMT < highly intercalated SR/C20A < highly exfoliated SR/C30B. The thermogravimetric analyses of the SR/C30B nanocomposite showed a substantial increase in the final residue in comparison with the neat SR. This indicated a
major improvement in the thermal stability of the rubber containing the exfoliated clay, which was also supported by the higher activation energy of decomposition measured for the nanocomposite
EKOPRENATM AS A REINFORCEMENT MODIFIER FOR GRAPHENE OXIDE/CARBON BLACK FILLED NATURAL RUBBER
No full textGraphene oxide (GO) has emerged as a new layered carbon nanomaterial due to its outstanding strength. However, to disperse GO sheets into a nonpolar rubber matrix such as natural rubber is a challenge. In this study, EkoprenaTM or epoxidised natural rubber (ENR) was used as a reinforcement modifier for hybrid filler graphene oxide/carbon black (GO/CB) filled natural rubber (NR). Three grades of ENR containing different levels of epoxide functional group (eg. 50%, 60% and 75%) were used to investigate the effect of polar functionality on the reinforcing efficiency of graphene oxide in natural rubber. The study has shown that the incorporation of ENR was found to reduce filler-filler interaction and to improve technological properties. The epoxide functionality on natural rubber opens the possibility of interaction with graphene oxide as indicated by the significant changes in the Tg.  The  best  levels of  reinforcement were  found with  the  addition  of  ENR-60 as reinforcement modifier.Keywords:  EkoprenaTM; epoxidised natural rubber; graphene oxide; natural rubber nanocomposite; reinforcement modifier
Characterization of functionalized multi-walled carbon nanotubes in pre-vulcanized natural rubber latex
No full text(2,2&#8242;-Bipyridine-&#954;2N,N&#8242;)bis(N-ethyl-N-phenyldithiocarbamato-&#954;2S,S&#8242;)cadmium(II) chloroform solvate
No full textIn the title compound, [Cd(C9H10NS2)2(C10H8N2)]&#183;CHCl3, the CdII atom exists in an all-cis distorted octahedral geometry. Chelation is isobidentate for one dithiocarbamate ligand and anisobidentate for the other. The chloroform solvent molecule is disordered over two positions of equal occupancy
Urine Untargeted Metabolomic Profiling Is Associated with the Dietary Pattern of Successful Aging among Malaysian Elderly
No full textFood intake biomarkers (FIBs) can reflect the intake of specific foods or dietary patterns (DP). DP for successful aging (SA) has been widely studied. However, the relationship between SA and DP characterized by FIBs still needs further exploration as the candidate markers are scarce. Thus, 1H-nuclear magnetic resonance (1H-NMR)-based urine metabolomics profiling was conducted to identify potential metabolites which can act as specific markers representing DP for SA. Urine sample of nine subjects from each three aging groups, SA, usual aging (UA), and mild cognitive impairment (MCI), were analyzed using the 1H-NMR metabolomic approach. Principal components analysis (PCA) and partial least-squares discriminant analysis (PLS-DA) were applied. The association between SA urinary metabolites and its DP was assessed using the Pearson’s correlation analysis. The urine of SA subjects was characterized by the greater excretion of citrate, taurine, hypotaurine, serotonin, and melatonin as compared to UA and MCI. These urinary metabolites were associated with alteration in “taurine and hypotaurine metabolism” and “tryptophan metabolism” in SA elderly. Urinary serotonin (r = 0.48, p < 0.05) and melatonin (r = 0.47, p < 0.05) were associated with oat intake. These findings demonstrate that a metabolomic approach may be useful for correlating DP with SA urinary metabolites and for further understanding of SA development
Implementation of functionalized multiwall carbon nanotubes on magnetorheological elastomer
No full textThis work studies the effects of loading various functionalized multiwall carbon nanotubes (carboxyl, –COOH-MWCNTs) on the morphological and the field-dependent rheological properties of magnetorheological elastomers (MREs). A new type of MRE, which is reinforced by various loading from 0 to 1.5 wt% of COOH-MWCNT, is fabricated and experimentally investigated. The morphology of COOH-MWCNT and MRE with COOH-MWCNTs is characterized using field emission scanning electron microscopy and transmission electron microscopy. The results indicate that the COOH-MWCNTs are well embedded and dispersed randomly in the MRE structures. The rheological properties under different magnetic fields are evaluated using parallel plate rheometers. The influence of COOH-MWCNT content on the viscoelastic performance of the MRE is systematically investigated. It is found that when a higher content of COOH-MWCNT (up to 1.0 wt%) is added in the MRE, the MRE exhibits a higher MR effect of up to 17.5%. It is also shown that COOH-MWCNT acts as a reinforcing agent that leads to an enhancement in MR performance
