Ahmad Fauzi | Ukm - Academia.edu (original) (raw)

Papers by Ahmad Fauzi

The Medical journal of Malaysia, 2004

Systemic Lupus Erythematosus (SLE) is a disease with multiorgan involvement and multiple autoanti... more Systemic Lupus Erythematosus (SLE) is a disease with multiorgan involvement and multiple autoantibody production including antineutrophil cytoplasmic antibodies (ANCA). Despite its reported prevalence in more than one third of SLE patients, the role of ANCA in the pathogenesis or otherwise in SLE remains unresolved. 131 SLE patients had been previously studied for various serologic parameters of disease activity. Their cumulative organ involvement in the course of their disease had also been determined and the Lupus Activity Index (LAI) calculated. Their stored sera were then screened for the presence of ANCA by two methods viz Indirect immunofluorescence (IIF) and also enzyme-linked immunosorbent assay (ELISA). ANCA was present in 24.8% of these SLE patients. The atypical ANCA pattern was predominant and accounted for an overall of 20.6%. Anti-MPO and anti-PR3 were detected in 1.5% of patients respectively. No association was found between ANCA positivity and disease activity. Ther...

Jurnal Teknik Kimia, Aug 1, 2010

Latex is a white colored that resembles milk out derived from planta wounded Havea Brasiliensi. H... more Latex is a white colored that resembles milk out derived from planta wounded Havea Brasiliensi. Havea Brasiliensi latex can be processed into rubber because it has a good nature that has the content of rubber particles in the form of hydrocarbon poly isopropena which is the main component of the rubber. Manufacture of rubber can be done to dense of latex with a coagulant called coagulation with coagulation materials. In research, the coagulation latex used gadung extract. The variables are used type of coagulant, volume of gadung's extract, and time.

Acta Medica Indonesiana, Oct 1, 2012

Tujuan: untuk mengevaluasi manfaat endoscopic retrograde cholangiopancreatography (ERCP) dalam pe... more Tujuan: untuk mengevaluasi manfaat endoscopic retrograde cholangiopancreatography (ERCP) dalam penanganan pasien yang memiliki gambaran klinis ikterus. Metode: sebuah studi deskriptif retrospektif dilakukan dengan menganalisa 129 prosedur ERCP yang dilaksanakan untuk 122 pasien di Rumah Sakit Umum Pusat Cipto Mangunkusumo dari Januari 2008 hingga Desember 2010. Tujuh orang pasien menjalani prosedur ERCP kedua. Keluhan utama adalah gambaran ikterus pada kulit pasien. ERCP dilaksanakan sesuai indikasi, dengan catatan lengkap mengenai distribusi penyakit yang diderita, hasil dari prosedur serta komplikasi yang terjadi. Hasil: subjek pada studi ini terdiri dari 63 pria (52%) dan 59 wanita (48%). Tujuh pasien menjalani ERCP dua kali. Data menunjukkan bahwa 68 prosedur (pada 63 pasien) diindikasikan oleh batu empedu, 53 prosedur (pada 52 pasien) diindikasikan oleh tumor atau massa, dan 8 prosedur (pada 7 pasien) dengan indikasi infeksi. Sepuluh dari 129 prosedur (8%) menunjukkan hasil normal, 96 prosedur (74%) menunjukkan hasil yang abnormal. Pada 23 kasus (18%), kanulasi yang sulit terjadi selama ERCP dan akses ke duktus koledokus (common bile duct) tidak tercapai. Dari 53 pasien dengan temuan batu positif, ektraksi berhasil dilakukan pada 43 pasien (81%); termasuk 12 pasien dengan ERCP sulit yang masih menyisakan fragmen-fragmen batu (23%). Ekstraksi tidak berhasil dilakukan pada 10 pasien (19%). Dari 53 pasien, 51 (96%) diantaranya memiliki batu radiolusen dan 2 pasien (4%) memiliki batu radioopak. Stent terpasang pada duktus koledokus (30 kasus, 83%), duktus pankreas (4 kasus, 11%), dan diluar duktus koledokus (2 kasus, 5%). Komplikasi terjadi pada 3 kasus (2%), termasuk migrasi stent keluar dari duktus koledokus (2 kasus) dan satu kasus dengan basket yang pecah. Kesimpulan: prosedur ERCP sangat berguna membantu klinisi dalam diagnosa dan tindakan terapi kelainankelainan pankreatobilier yang membutuhkan ektstraksi batu empedu dan pemasangan stent. ABSTRACT Aim:.to evaluate endoscopic retrograde cholangiopancreatography (ERCP) benefits in treating patients with clinical appearance of yellowish discoloration. Methods: a descriptive retrospective cross-sectional study was performed on 122 patients at Cipto Mangunkusumo Hospital from January 2008 to December 2010. The main complained was yellowish discoloration of the skin. ERCPs were performed as appropriate, and then the distribution of disease entity, results of procedure and complications were noted. Results: subjects of this study consist of 63 males (52%) and 59 females (48%), 7 patients have undergone ERCP 2 times. Data showed 63 cases (51%) were indicated by stone and 52 cases (43%) by tumor/mass and 7 cases by infection (6%). Ten out of 122 cases (7%) showed normal results. Difficult canulation was encountered in 23 cases (18%) as access to the CBD could not be obtained. From 53 cases with stone, the extraction was successful in 43 (81%) Vol 44 • Number 4 • October 2012

Jurnal Penelitian Pembelajaran Fisika, 2012

International Journal of Education and Literacy Studies, 2015

In spite of growing amount of technologies, tools and information communication and technology (I... more In spite of growing amount of technologies, tools and information communication and technology (ICT) by providing pre-service teacher education courses, pre-service teachers' ICT utilization is not still as predicted. Research shows many barriers influencing pre-service teachers' utilization of ICT. Many researchers have identified a number of factors to describe why student teachers do not feel ready to use ICT in their classrooms. The purpose of this review of research literature is to discover what reasons are key obstacles that prevent utilization of ICT in pre-service teachers' educational courses. The review results show that most of the researchers believe that lack of enough training, lack of suitable software and hardware, lack of knowledge and skills, lack of ICT leadership support, lacking time, and lack of self-efficacy are the key barriers for utilization of ICTs in pre-service teachers' educational courses. The study also concluded that understanding the amount to which these obstacles affect ICT users and institutes can support decisionmaking on how to equip them.

Learning statistics with its mathematical nature is one of the principal stumbling blocks among u... more Learning statistics with its mathematical nature is one of the principal stumbling blocks among university students in various faculties. Hence, managing an internet-based tutorial module to support students is value added specifically, when this online tutorial module is well organized in line with learners' needs and characteristics. Instructional design is defined as a combination of approaches arranged to improve the instructional programs and educational methods. Analysis as the first phase of generic ADDIE model is usually downplayed through instructional design processes. This study focuses on the analysis of target learners concerning characteristics of learning environment and effective strategies for collaborative online learning by reporting and generalizing results from an evaluative single case study. This design was based upon observation and discussion conducted in a face-to-face statistics course and asynchronous communication managed by Facebook-as a discussion ...

Friction welding is widely used for joining similar and dissimilar metals. However, joining of ce... more Friction welding is widely used for joining similar and dissimilar metals. However, joining of ceramic to metal is very challenging and requires very systematic experiments. The ceramic materials are brittle and hard as compared to metal that are ductile and soft. At the same time, both materials have different coefficient of thermal expansion. Extensive study have been devoted to investigate the appropriate processes to join dissimilar materials. The aim of this work was to study the effect of rotational speeds on the mechanical strength of ceramic and metal alloy joints formed by friction welding of alumina – 6061 aluminum alloy rods with diameters of 15 mm. The alumina rods were prepared through slip casting in Plaster of Paris molds and subsequently sintered at 1600°C, while the aluminum rods were machine down using a lathe machine to the dimension required. Rotational speeds were ranging between 1250 to 2500 rpm. A friction pressure was maintained at 14 MPa and friction time of...

Nowadays, use of ICT in higher education is one of the main consideration in educational improvem... more Nowadays, use of ICT in higher education is one of the main consideration in educational improvements. Integrating ICT into the training procedures is extensively apparent as a critical assert in educational reforms. In spite of remarkable improvement higher education in many countries, integration of ICT into universities to be astonishingly low. The purpose of current paper is based on a review of 68 refereed article and dissertation that focused on introducing Ely's (1990) eight conditions that simplify implementation of an invention. Also identify which conditions more affected on successful implementation an innovation in higher education. The results shown that although there were important efforts and positive approaches toward the use of ICT in higher education, but the procedure of ICT integration at the university challenged factors that have effect on utilization of ICT by faculty members in universities. The review finding revealed that effective implementation of an...

Journal of forensic and legal medicine, 2015

Incinerated human remains may require dental comparison to establish identity. The remains are of... more Incinerated human remains may require dental comparison to establish identity. The remains are often fragile and minor forces can damage teeth and facial bones, disrupting anatomical relationships, and impairing the ability to compare with antemortem records. This study evaluated the ability of a commercially available gloss spray to stabilize teeth in incinerated remains. Lower anterior teeth of scavenged sheep mandibles were incinerated in a furnace at a temperature of 500 °C for 35 min. Before a series of vibration tests, the left side of each sample was treated with the spray, with the right side acting as a control. Significant retention of dental data was achieved utilizing the spray in comparison to the non-stabilized sides. This study showed that a commercial clear gloss spray did not affect the ability to document or perform radiographic assessment of restorations, and statistically improved the stability and anatomical relationships of incinerated dental remains in scaveng...

Solid State Ionics - Trends in the New Millennium - Proceedings of the 8th Asian Conference, 2002

This paper describes the synthesis and electrochemical behavior of the oxygen deficient brannerit... more This paper describes the synthesis and electrochemical behavior of the oxygen deficient brannerite LiVWO6-delta Brannerite LiVWO6-delta has been synthesized by means of a simple aqueous solution reaction (ASR) technique namely soft-combustion process employing glycine as a soft combustion agent. The synthesized product has been subjected to thermal treatment in various stages in order to best understand the phase formation and

2011 IEEE 7th International Colloquium on Signal Processing and its Applications, 2011

The process of grading Malaysia Pepper berries are still semi-automatic. One of the grading crite... more The process of grading Malaysia Pepper berries are still semi-automatic. One of the grading criteria is based on the extraneous and foreign matters that exist in pepper berries samples. Therefore, in this paper we propose image processing techniques to identify the foreign matter. We analyse the number of foreign matters in the image and locate them using the xPepper Identification

Applied Mechanics and Materials, 2014

This manuscript provides modeling and validation of a quarter car vehicle model to study the whee... more This manuscript provides modeling and validation of a quarter car vehicle model to study the wheel dynamics behavior in longitudinal direction. The model is consists of a longitudinal slip model subsystem, a quarter body dynamic and tire subsystems. The quarter vehicle model was then validated using an instrumented experimental vehicle based on the driver input from brake and throttle pedals. Vehicle transient handling dynamic tests known as sudden braking test was performed for the purpose of validation. Several behaviors of the vehicle dynamics were observed during braking maneuvers such as body longitudinal velocity, wheel linear velocity and tire longitudinal slip at a quarter of the vehicle. Comparisons of the experimental results and model responses with sudden braking imposed motions were made. Consequently, the trends between simulation results and experimental data were found almost similar with an acceptable level of error for the application at hand.

The Journal of Rheumatology, 2008

To assess bone mineral density (BMD) changes in patients with systemic lupus erythematosus (SLE) ... more To assess bone mineral density (BMD) changes in patients with systemic lupus erythematosus (SLE) undergoing longterm therapy with corticosteroids (CS) while taking calcium, calcitriol, or alendronate. The primary endpoint was BMD changes at 2 years. Premenopausal SLE patients were randomized into 3 groups according to medication: calcium carbonate 500 mg bd (calcium alone), calcitriol 0.25 microg bd plus calcium carbonate 500 mg bd (calcitriol + calcium), and alendronate 70 mg/week plus calcium carbonate 500 mg bd (alendronate + calcium). BMD was measured at baseline and at the end of the first and second years. Ninety-eight patients were recruited. There were 33 patients taking calcium alone, 33 calcitriol + calcium, and 32 alendronate + calcium. On randomization, median duration of CS use was 2.5 years (range 0-20 yrs). Seventy-seven patients (78.6%) completed the study (23 taking calcium alone, 27 calcitriol + calcium, 27 alendronate + calcium). There were no significant differences in mean CS dosages among the 3 groups at the time of BMD measurements. After 2 years, there were no significant changes in BMD in the calcium-alone and calcitriol + calcium groups, apart from a 0.93% (p < 0.001) reduction in total hip BMD in the calcium-alone group. In contrast, the alendronate + calcium group showed significant increases in BMD of 2.69% (p < 0.001) in the lumbar spine and 1.41% (p < 0.001) in total hip. Both calcium alone and calcitriol + calcium preserved lumbar spine BMD in premenopausal patients with SLE taking longterm CS at 2 years, whereas alendronate + calcium led to increases in BMD in lumbar spine and total hip. Premenopausal women taking CS should be considered for osteoporosis prophylaxis.

Journal of Power Sources, 2001

Brannerite-LiVWO 6 , has been synthesized by employing a wet-chemical soft-combustion (low temper... more Brannerite-LiVWO 6 , has been synthesized by employing a wet-chemical soft-combustion (low temperature) technique and its batteryactive character as candidate cathode material in lithium-containing batteries is reported in the light of electrochemical means. Structural and thermal properties have also been studied by means of classical techniques such as XRD and thermal analysis. The structural features are found to be similar to its analogous counterpart, brannerite-LiVMoO 6 previously reported. Quasi-layered type LiVWO 6 crystallizes in brannerite structure of AB 2 O 6 type, having a general formula LiM H 2 O 6 (M H transition metal) with lattice parameters a 9:347 A Ê , b 3:670 A Ê , c 6:593 A Ê and b 111 50 H . The thermochemical reactions that occur during the soft-combustion of the precursor mass facilitate the formation of the above compound at 4348C as deduced from TG±DTA scan. The product (LiVWO 6 ) thus prepared (calcined at 7008C) exhibits the submicrometer grains (<1 mm) whose speci®c surface area is found to be 4.97 m 2 /g as deduced from BET analysis. The redox behavior of the above compound has been examined for LiVWO 6 /Li /Li under the wet electrolyte (1 M LiPF 6 : EC DMC) environment in the voltage regime 4.0 and 1.5 V using constant current technique at a current density of 0.8 mA/cm 2 . It has been found that the test cell containing LiVWO 6 /Li couple demonstrates excellent charge±discharge behavior in the voltage regime 3.0±1.5 V and the speci®c capacity of 240mAh/ghasbeendeducedfromthe®rstcharge±dischargecycleinthevoltageregime240 mAh/g has been deduced from the ®rst charge±discharge cycle in the voltage regime 240mAh/ghasbeendeducedfromtheR◯rstcharge±dischargecycleinthevoltageregime4.0±1.5 V. #

penerbit.uthm.edu.my

The used of computers is increasingly becoming important in Malaysian education system. This occu... more The used of computers is increasingly becoming important in Malaysian education system. This occurs due to the rapid development of information technology in the world. Every educational policy that is planned involves the integration of information and communication ...

wseas.us

Abstract. Calculus is most important subject for science and engineering students but phenomenall... more Abstract. Calculus is most important subject for science and engineering students but phenomenally it is abstract, difficult and highly boring. Underpinning with in constructivism theories, problem-based learning (PBL) is one of student centred and active learning strategies or ...

European Journal of …, 2009

Numerous studies have shown the positive impact of integrating technological tool in the teaching... more Numerous studies have shown the positive impact of integrating technological tool in the teaching and learning process of mathematics in the classroom. The teaching and learning of algebra utilizing dynamic softwares have been explicitly indicated in the Malaysian ...

This paper examines the effects of laptops on science teachers' pedagogical roles in science labo... more This paper examines the effects of laptops on science teachers' pedagogical roles in science laboratories measured in terms of student and teacher centredness. A sample of 209 science teachers participated in this study where 124 teachers were granted laptops. The result of the study suggested that laptop ownership does not affect the pedagogical roles of science teachers. This study also found that teachers with and without laptops perceived that computer technology was useful but those with laptops exhibited greater use of computer technology in the science laboratory learning environment.

… Online Journal of …, 2005

Past studies have identified several obstacles that hinder the use of technology in instruction b... more Past studies have identified several obstacles that hinder the use of technology in instruction by school teachers. What conditions will help teachers overcome these obstacles and thus facilitate the use of technology in instruction? Ely (1999) proposed ...

The Medical journal of Malaysia, 2004

Systemic Lupus Erythematosus (SLE) is a disease with multiorgan involvement and multiple autoanti... more Systemic Lupus Erythematosus (SLE) is a disease with multiorgan involvement and multiple autoantibody production including antineutrophil cytoplasmic antibodies (ANCA). Despite its reported prevalence in more than one third of SLE patients, the role of ANCA in the pathogenesis or otherwise in SLE remains unresolved. 131 SLE patients had been previously studied for various serologic parameters of disease activity. Their cumulative organ involvement in the course of their disease had also been determined and the Lupus Activity Index (LAI) calculated. Their stored sera were then screened for the presence of ANCA by two methods viz Indirect immunofluorescence (IIF) and also enzyme-linked immunosorbent assay (ELISA). ANCA was present in 24.8% of these SLE patients. The atypical ANCA pattern was predominant and accounted for an overall of 20.6%. Anti-MPO and anti-PR3 were detected in 1.5% of patients respectively. No association was found between ANCA positivity and disease activity. Ther...

Jurnal Teknik Kimia, Aug 1, 2010

Latex is a white colored that resembles milk out derived from planta wounded Havea Brasiliensi. H... more Latex is a white colored that resembles milk out derived from planta wounded Havea Brasiliensi. Havea Brasiliensi latex can be processed into rubber because it has a good nature that has the content of rubber particles in the form of hydrocarbon poly isopropena which is the main component of the rubber. Manufacture of rubber can be done to dense of latex with a coagulant called coagulation with coagulation materials. In research, the coagulation latex used gadung extract. The variables are used type of coagulant, volume of gadung's extract, and time.

Acta Medica Indonesiana, Oct 1, 2012

Tujuan: untuk mengevaluasi manfaat endoscopic retrograde cholangiopancreatography (ERCP) dalam pe... more Tujuan: untuk mengevaluasi manfaat endoscopic retrograde cholangiopancreatography (ERCP) dalam penanganan pasien yang memiliki gambaran klinis ikterus. Metode: sebuah studi deskriptif retrospektif dilakukan dengan menganalisa 129 prosedur ERCP yang dilaksanakan untuk 122 pasien di Rumah Sakit Umum Pusat Cipto Mangunkusumo dari Januari 2008 hingga Desember 2010. Tujuh orang pasien menjalani prosedur ERCP kedua. Keluhan utama adalah gambaran ikterus pada kulit pasien. ERCP dilaksanakan sesuai indikasi, dengan catatan lengkap mengenai distribusi penyakit yang diderita, hasil dari prosedur serta komplikasi yang terjadi. Hasil: subjek pada studi ini terdiri dari 63 pria (52%) dan 59 wanita (48%). Tujuh pasien menjalani ERCP dua kali. Data menunjukkan bahwa 68 prosedur (pada 63 pasien) diindikasikan oleh batu empedu, 53 prosedur (pada 52 pasien) diindikasikan oleh tumor atau massa, dan 8 prosedur (pada 7 pasien) dengan indikasi infeksi. Sepuluh dari 129 prosedur (8%) menunjukkan hasil normal, 96 prosedur (74%) menunjukkan hasil yang abnormal. Pada 23 kasus (18%), kanulasi yang sulit terjadi selama ERCP dan akses ke duktus koledokus (common bile duct) tidak tercapai. Dari 53 pasien dengan temuan batu positif, ektraksi berhasil dilakukan pada 43 pasien (81%); termasuk 12 pasien dengan ERCP sulit yang masih menyisakan fragmen-fragmen batu (23%). Ekstraksi tidak berhasil dilakukan pada 10 pasien (19%). Dari 53 pasien, 51 (96%) diantaranya memiliki batu radiolusen dan 2 pasien (4%) memiliki batu radioopak. Stent terpasang pada duktus koledokus (30 kasus, 83%), duktus pankreas (4 kasus, 11%), dan diluar duktus koledokus (2 kasus, 5%). Komplikasi terjadi pada 3 kasus (2%), termasuk migrasi stent keluar dari duktus koledokus (2 kasus) dan satu kasus dengan basket yang pecah. Kesimpulan: prosedur ERCP sangat berguna membantu klinisi dalam diagnosa dan tindakan terapi kelainankelainan pankreatobilier yang membutuhkan ektstraksi batu empedu dan pemasangan stent. ABSTRACT Aim:.to evaluate endoscopic retrograde cholangiopancreatography (ERCP) benefits in treating patients with clinical appearance of yellowish discoloration. Methods: a descriptive retrospective cross-sectional study was performed on 122 patients at Cipto Mangunkusumo Hospital from January 2008 to December 2010. The main complained was yellowish discoloration of the skin. ERCPs were performed as appropriate, and then the distribution of disease entity, results of procedure and complications were noted. Results: subjects of this study consist of 63 males (52%) and 59 females (48%), 7 patients have undergone ERCP 2 times. Data showed 63 cases (51%) were indicated by stone and 52 cases (43%) by tumor/mass and 7 cases by infection (6%). Ten out of 122 cases (7%) showed normal results. Difficult canulation was encountered in 23 cases (18%) as access to the CBD could not be obtained. From 53 cases with stone, the extraction was successful in 43 (81%) Vol 44 • Number 4 • October 2012

Jurnal Penelitian Pembelajaran Fisika, 2012

International Journal of Education and Literacy Studies, 2015

In spite of growing amount of technologies, tools and information communication and technology (I... more In spite of growing amount of technologies, tools and information communication and technology (ICT) by providing pre-service teacher education courses, pre-service teachers' ICT utilization is not still as predicted. Research shows many barriers influencing pre-service teachers' utilization of ICT. Many researchers have identified a number of factors to describe why student teachers do not feel ready to use ICT in their classrooms. The purpose of this review of research literature is to discover what reasons are key obstacles that prevent utilization of ICT in pre-service teachers' educational courses. The review results show that most of the researchers believe that lack of enough training, lack of suitable software and hardware, lack of knowledge and skills, lack of ICT leadership support, lacking time, and lack of self-efficacy are the key barriers for utilization of ICTs in pre-service teachers' educational courses. The study also concluded that understanding the amount to which these obstacles affect ICT users and institutes can support decisionmaking on how to equip them.

Learning statistics with its mathematical nature is one of the principal stumbling blocks among u... more Learning statistics with its mathematical nature is one of the principal stumbling blocks among university students in various faculties. Hence, managing an internet-based tutorial module to support students is value added specifically, when this online tutorial module is well organized in line with learners' needs and characteristics. Instructional design is defined as a combination of approaches arranged to improve the instructional programs and educational methods. Analysis as the first phase of generic ADDIE model is usually downplayed through instructional design processes. This study focuses on the analysis of target learners concerning characteristics of learning environment and effective strategies for collaborative online learning by reporting and generalizing results from an evaluative single case study. This design was based upon observation and discussion conducted in a face-to-face statistics course and asynchronous communication managed by Facebook-as a discussion ...

Friction welding is widely used for joining similar and dissimilar metals. However, joining of ce... more Friction welding is widely used for joining similar and dissimilar metals. However, joining of ceramic to metal is very challenging and requires very systematic experiments. The ceramic materials are brittle and hard as compared to metal that are ductile and soft. At the same time, both materials have different coefficient of thermal expansion. Extensive study have been devoted to investigate the appropriate processes to join dissimilar materials. The aim of this work was to study the effect of rotational speeds on the mechanical strength of ceramic and metal alloy joints formed by friction welding of alumina – 6061 aluminum alloy rods with diameters of 15 mm. The alumina rods were prepared through slip casting in Plaster of Paris molds and subsequently sintered at 1600°C, while the aluminum rods were machine down using a lathe machine to the dimension required. Rotational speeds were ranging between 1250 to 2500 rpm. A friction pressure was maintained at 14 MPa and friction time of...

Nowadays, use of ICT in higher education is one of the main consideration in educational improvem... more Nowadays, use of ICT in higher education is one of the main consideration in educational improvements. Integrating ICT into the training procedures is extensively apparent as a critical assert in educational reforms. In spite of remarkable improvement higher education in many countries, integration of ICT into universities to be astonishingly low. The purpose of current paper is based on a review of 68 refereed article and dissertation that focused on introducing Ely's (1990) eight conditions that simplify implementation of an invention. Also identify which conditions more affected on successful implementation an innovation in higher education. The results shown that although there were important efforts and positive approaches toward the use of ICT in higher education, but the procedure of ICT integration at the university challenged factors that have effect on utilization of ICT by faculty members in universities. The review finding revealed that effective implementation of an...

Journal of forensic and legal medicine, 2015

Incinerated human remains may require dental comparison to establish identity. The remains are of... more Incinerated human remains may require dental comparison to establish identity. The remains are often fragile and minor forces can damage teeth and facial bones, disrupting anatomical relationships, and impairing the ability to compare with antemortem records. This study evaluated the ability of a commercially available gloss spray to stabilize teeth in incinerated remains. Lower anterior teeth of scavenged sheep mandibles were incinerated in a furnace at a temperature of 500 °C for 35 min. Before a series of vibration tests, the left side of each sample was treated with the spray, with the right side acting as a control. Significant retention of dental data was achieved utilizing the spray in comparison to the non-stabilized sides. This study showed that a commercial clear gloss spray did not affect the ability to document or perform radiographic assessment of restorations, and statistically improved the stability and anatomical relationships of incinerated dental remains in scaveng...

Solid State Ionics - Trends in the New Millennium - Proceedings of the 8th Asian Conference, 2002

This paper describes the synthesis and electrochemical behavior of the oxygen deficient brannerit... more This paper describes the synthesis and electrochemical behavior of the oxygen deficient brannerite LiVWO6-delta Brannerite LiVWO6-delta has been synthesized by means of a simple aqueous solution reaction (ASR) technique namely soft-combustion process employing glycine as a soft combustion agent. The synthesized product has been subjected to thermal treatment in various stages in order to best understand the phase formation and

2011 IEEE 7th International Colloquium on Signal Processing and its Applications, 2011

The process of grading Malaysia Pepper berries are still semi-automatic. One of the grading crite... more The process of grading Malaysia Pepper berries are still semi-automatic. One of the grading criteria is based on the extraneous and foreign matters that exist in pepper berries samples. Therefore, in this paper we propose image processing techniques to identify the foreign matter. We analyse the number of foreign matters in the image and locate them using the xPepper Identification

Applied Mechanics and Materials, 2014

This manuscript provides modeling and validation of a quarter car vehicle model to study the whee... more This manuscript provides modeling and validation of a quarter car vehicle model to study the wheel dynamics behavior in longitudinal direction. The model is consists of a longitudinal slip model subsystem, a quarter body dynamic and tire subsystems. The quarter vehicle model was then validated using an instrumented experimental vehicle based on the driver input from brake and throttle pedals. Vehicle transient handling dynamic tests known as sudden braking test was performed for the purpose of validation. Several behaviors of the vehicle dynamics were observed during braking maneuvers such as body longitudinal velocity, wheel linear velocity and tire longitudinal slip at a quarter of the vehicle. Comparisons of the experimental results and model responses with sudden braking imposed motions were made. Consequently, the trends between simulation results and experimental data were found almost similar with an acceptable level of error for the application at hand.

The Journal of Rheumatology, 2008

To assess bone mineral density (BMD) changes in patients with systemic lupus erythematosus (SLE) ... more To assess bone mineral density (BMD) changes in patients with systemic lupus erythematosus (SLE) undergoing longterm therapy with corticosteroids (CS) while taking calcium, calcitriol, or alendronate. The primary endpoint was BMD changes at 2 years. Premenopausal SLE patients were randomized into 3 groups according to medication: calcium carbonate 500 mg bd (calcium alone), calcitriol 0.25 microg bd plus calcium carbonate 500 mg bd (calcitriol + calcium), and alendronate 70 mg/week plus calcium carbonate 500 mg bd (alendronate + calcium). BMD was measured at baseline and at the end of the first and second years. Ninety-eight patients were recruited. There were 33 patients taking calcium alone, 33 calcitriol + calcium, and 32 alendronate + calcium. On randomization, median duration of CS use was 2.5 years (range 0-20 yrs). Seventy-seven patients (78.6%) completed the study (23 taking calcium alone, 27 calcitriol + calcium, 27 alendronate + calcium). There were no significant differences in mean CS dosages among the 3 groups at the time of BMD measurements. After 2 years, there were no significant changes in BMD in the calcium-alone and calcitriol + calcium groups, apart from a 0.93% (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001) reduction in total hip BMD in the calcium-alone group. In contrast, the alendronate + calcium group showed significant increases in BMD of 2.69% (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001) in the lumbar spine and 1.41% (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001) in total hip. Both calcium alone and calcitriol + calcium preserved lumbar spine BMD in premenopausal patients with SLE taking longterm CS at 2 years, whereas alendronate + calcium led to increases in BMD in lumbar spine and total hip. Premenopausal women taking CS should be considered for osteoporosis prophylaxis.

Journal of Power Sources, 2001

Brannerite-LiVWO 6 , has been synthesized by employing a wet-chemical soft-combustion (low temper... more Brannerite-LiVWO 6 , has been synthesized by employing a wet-chemical soft-combustion (low temperature) technique and its batteryactive character as candidate cathode material in lithium-containing batteries is reported in the light of electrochemical means. Structural and thermal properties have also been studied by means of classical techniques such as XRD and thermal analysis. The structural features are found to be similar to its analogous counterpart, brannerite-LiVMoO 6 previously reported. Quasi-layered type LiVWO 6 crystallizes in brannerite structure of AB 2 O 6 type, having a general formula LiM H 2 O 6 (M H transition metal) with lattice parameters a 9:347 A Ê , b 3:670 A Ê , c 6:593 A Ê and b 111 50 H . The thermochemical reactions that occur during the soft-combustion of the precursor mass facilitate the formation of the above compound at 4348C as deduced from TG±DTA scan. The product (LiVWO 6 ) thus prepared (calcined at 7008C) exhibits the submicrometer grains (<1 mm) whose speci®c surface area is found to be 4.97 m 2 /g as deduced from BET analysis. The redox behavior of the above compound has been examined for LiVWO 6 /Li /Li under the wet electrolyte (1 M LiPF 6 : EC DMC) environment in the voltage regime 4.0 and 1.5 V using constant current technique at a current density of 0.8 mA/cm 2 . It has been found that the test cell containing LiVWO 6 /Li couple demonstrates excellent charge±discharge behavior in the voltage regime 3.0±1.5 V and the speci®c capacity of 240mAh/ghasbeendeducedfromthe®rstcharge±dischargecycleinthevoltageregime240 mAh/g has been deduced from the ®rst charge±discharge cycle in the voltage regime 240mAh/ghasbeendeducedfromtheR◯rstcharge±dischargecycleinthevoltageregime4.0±1.5 V. #

penerbit.uthm.edu.my

The used of computers is increasingly becoming important in Malaysian education system. This occu... more The used of computers is increasingly becoming important in Malaysian education system. This occurs due to the rapid development of information technology in the world. Every educational policy that is planned involves the integration of information and communication ...

wseas.us

Abstract. Calculus is most important subject for science and engineering students but phenomenall... more Abstract. Calculus is most important subject for science and engineering students but phenomenally it is abstract, difficult and highly boring. Underpinning with in constructivism theories, problem-based learning (PBL) is one of student centred and active learning strategies or ...

European Journal of …, 2009

Numerous studies have shown the positive impact of integrating technological tool in the teaching... more Numerous studies have shown the positive impact of integrating technological tool in the teaching and learning process of mathematics in the classroom. The teaching and learning of algebra utilizing dynamic softwares have been explicitly indicated in the Malaysian ...

This paper examines the effects of laptops on science teachers' pedagogical roles in science labo... more This paper examines the effects of laptops on science teachers' pedagogical roles in science laboratories measured in terms of student and teacher centredness. A sample of 209 science teachers participated in this study where 124 teachers were granted laptops. The result of the study suggested that laptop ownership does not affect the pedagogical roles of science teachers. This study also found that teachers with and without laptops perceived that computer technology was useful but those with laptops exhibited greater use of computer technology in the science laboratory learning environment.

… Online Journal of …, 2005

Past studies have identified several obstacles that hinder the use of technology in instruction b... more Past studies have identified several obstacles that hinder the use of technology in instruction by school teachers. What conditions will help teachers overcome these obstacles and thus facilitate the use of technology in instruction? Ely (1999) proposed ...