Browse publications by year: 2016

  1. Low, Chia Yen, Cheang, QingJun, Lim, Pek Hong
    MyJurnal
    Background: Clinical teaching is an important and
    essential teaching tool in the clinical area. Clinical
    teaching and learning is essential for the development
    and progression of experiential nursing knowledge.

    Objectives: This research study aims to identify the
    perceptions and evaluations regarding clinical teaching
    among Year 2 and Year 3 nursing students, and also to
    find out if there are any differences in the perceptions
    and evaluations of the nursing students in regards to
    clinical teaching.

    Methods: The formula for calculating the sample
    size was adopted from Morris (2005). The sample size
    obtained from the calculation with the confidence
    interval of 95%, was 132 participants. The participants
    were taken from a universal population of 142 diploma
    nursing students: 50 Year 2 nursing students and
    92 Year 3 nursing students from the International
    Medical College in Selangor. The research instrument
    used was the Bedside Teaching Evaluation questionnaire
    that was adapted with approval by the writer from
    the University of Witwatersrand Department of
    Surgery (2008). A pilot study was conducted on 20
    participants of Year 1 to Year 3 nursing students from the
    Assunta College of Nursing, with a Cronbach’s alpha
    reliability index of 0.89.

    Results: The data collected were analysed using
    descriptive statistics to find out the participant’s
    perceptions and evaluations regards clinical teaching;
    and also to compare the perceptions and evaluations
    between the two groups of nursing students from Years 2
    and 3. The study findings showed that 46% (n=142) of
    the respondents had a good feedback on all the five (5)
    items under the perceptions of clinical teaching whereas
    42% (n=142) of the respondents had a moderate view
    on all the five (5) items in the perceptions of clinical
    teaching sessions. With regards to the evaluation of
    clinical teaching sessions, 50% of the respondents had
    a moderate feedback on all the three (3) items in this
    section.

    Conclusion: Most of the participants perceived and evaluated the clinical teaching as an important teachinglearning
    strategy in enhancing clinical learning.
  2. Tang, Wai Mun, Abdul Rahman Idris
    MyJurnal
    Background: The escalating rate of private hospital
    nurses leaving their workplace raised serious concern
    among the stakeholders. Past studies had found that
    nursing practice environment was the key influence
    on nurses’ leaving intention, but studies examining
    the quality of nursing practice environment of private
    hospital settings was scarce and therefore warrant
    investigation to provide direction for interventions in
    addressing nursing turnover.

    Objectives: To determine nurses’ perceptions towards
    nursing practice environment and whether there is
    any significant associations with nurses’ demographic
    variables.

    Methods: Cross-sectional inferential survey study was
    conducted at four private hospitals in the Peninsular
    Malaysia using the Practice Environment Scale of
    the Nursing Work Index (PES-NWI) and 885 nurses
    participated in the study.

    Results: Nurses rated their practice environment as
    favourable. However, items stated in “staffing and
    resource adequacy” subscale warrant serious attention
    because nurses rated poorly on item related to “enough
    staff to get the work done” (M = 2.37, SD = .81) and
    “enough registered nurses to provide quality patient
    care” (M = 2.41, SD = .82). Furthermore, t-test analyses
    found that nurses with educational sponsorship bond
    (p < .001), higher educational qualifications (p < .05),
    and have been working in the hospital since graduation
    (p < .001) were more likely to rate their practice
    environment lower.

    Conclusion: Hospital administrators play significant
    role in sustaining and creating positive nursing practice
    environment in order to ensure steady supply of nurses
    to meet the challenging healthcare needs.
  3. Lim, Swee Geok, Muhamad Asyraf Muhtar
    MyJurnal
    Background: Nurses are the “front line” staff in most
    health systems and their contribution is recognised as
    essential in meeting development goals and delivering
    safe and effective care (ICN, 2007). Nurses are in high
    demand not only in developed countries but also in
    developing countries like Malaysia. However, more
    than 70% of Malaysian hospitals currently do not have
    adequate nursing staff. At least 174,000 nurses need to
    be trained by 2020 to meet WHO’s nurse-to-patient
    ratio of 1:200. The purpose of this study is to identify
    the main factors that influence the nursing students’
    decision to choose nursing as their career.

    Method: A descriptive study guided by Self
    Determination Theory was used for this study. A 29-
    item questionnaire adapted from McCabe, Nowak
    and Mullen (2005) was distributed to all students in a
    nursing college (n=117).

    Results: The five main reasons for choosing nursing
    as a career were “ability to help others”, “training was
    provided on the job”, “ability to work closely with
    people”, “parental advice”, and “accommodation was
    provided while training”. The top three main domains
    that influenced the nursing students’ decision to choose
    nursing as their career include “travel opportunities
    of nursing”, “intrinsic attraction of nursing” and
    “immediacy of support on entry to nursing”. A total of
    19 (0.2%) will not choose nursing if given a chance.
    The main reasons were “want to take another course”,
    “no time to spend with family” and “nursing is a stressful
    job”.

    Conclusion: The findings of this study provided valuable
    information regarding motivating factors which attract
    the current generation to join nursing. It is of concern
    that items representing nurses’ image were not rated
    highly.
  4. Rafiqahmed Vasiwala, Ismail Burud
    MyJurnal
    Malignant melanoma is a rare malignancy of the external auditory canal. The vast majority of them occur in the areas of the body that are exposed to the sun. Early histological examination may possibly favor better prognosis. We report a case of a 38-year-old female who presented with a small mass in right ear canal, earache and minimum discharge since 4 months. Initially scraping was done in the ENT clinic. Subsequently she had a wide excision done by the end aural approach at a different hospital. A year later the patient presented with a swelling involving the ear canal which extended to the helix and supratemporal region with the histology report as malignant melanoma. A literature review of the disease, radiological findings, immunohistochemical features and treatment options are discussed.
    MeSH terms: Adult; Ear Canal; Earache; Female; Humans; Melanoma; Prognosis; Skin Neoplasms
  5. Tumin M, Noh A, Mohd Satar N, Tafran K, Abdullah N, Wan Md Adnan WAH, et al.
    MyJurnal
    Background: Some argue that Malaysia’s extremely low organ donation rate is attributed to religion, specifically Islam. Testing this argument, this study asked Malaysian Muslims their views regarding various issues on organ donation and examined whether their decisions to donate organs are framed by religious beliefs.
    Materials and Methods: This study investigated the perspectives of Malaysian Muslims between October and December 2013 in Kuala Lumpur. Self-administered questionnaires were distributed to 900 people, with 829 responses collected (92% response rate). Respondents’ verbal consent was taken before proceeding with the survey.
    Results: The survey found that more than half of respondents felt that organ donation is permitted in
    Islam and that it is a communal responsibility. However, the same proportions were unsure on the issues of rewards for organs or on whether Islam permits the procuring of organs from brain dead patients.
    Conclusions: Malaysian Muslims are not against organ donation; however, encouraging organ donation requires the state to address public concerns on Islam’s views on this sensitive issue through effective policy tools to help address these gaps in Malaysian Muslims’ understanding of organ donation. The organ donation rate could improve by using Islamic scholars as ambassadors for an organ donation drive to convey the message of Malaysia’s urgent need for organ donation.
    MeSH terms: Adult; Cross-Sectional Studies; Humans; Islam; Health Knowledge, Attitudes, Practice*; Malaysia; Tissue and Organ Procurement*; Religion
  6. Velayudhan Menon, Rifdy Mohideen
    MyJurnal
    Background: Clinical reasoning is the name given to
    the cognitive processes by which doctors evaluate and
    analyse information from patients. It is a skill developed
    by experiential learning and is difficult to assess
    objectively. The script concordance test, an assessment
    tool introduced into the health sciences about 15 years
    ago, is a way of assessing clinical reasoning ability in
    an objective manner and allows comparisons of the
    decisions made by medical students and experts in
    situations of uncertainty.

    Methods: Twenty-six final year medical students from
    the International Medical University, Kuala Lumpur,
    were tested on their decision making skills regarding a
    young febrile patient. The students evaluated different
    pieces of information in five different scenarios and
    made decisions on a five-point Likert scale in the
    standard format of the script concordance test. Their
    decisions were compared to the decisions of a panel of
    experienced clinicians in Internal Medicine.

    Results: The script concordance test scores for the
    different scenarios were calculated with higher scores
    being indicative of greater concordance between the
    reasoning of students and doctors. The students showed
    poor concordance with doctors in evaluating clinical
    information. Overall, only 20 percent of the choices
    made by students were the same as the choices made by
    the majority of doctors.

    Conclusion: Medical students vary in their ability to
    interpret the significance of clinical information. Using
    the script concordance test, this preliminary study looked
    at the ability of final year medical students to interpret
    information about a patient with a febrile illness. The
    results showed poor concordance between students and
    doctors in the way they interpreted clinical information.
    The script concordance test has the potential to be a
    tool for teaching and assessing clinical reasoning.
    MeSH terms: Choice Behavior; Cognition; Humans; Internal Medicine; Problem Solving; Students, Medical; Universities; Problem-Based Learning; Uncertainty
  7. Tang, Wai Mun, Abdul Rahman Idris
    MyJurnal
    Background: Many nurses are leaving for various
    destinations and leaving intention was found to be the
    immediate precursor for actual turnover, but studies
    examining the different forms of leaving intention (unit,
    hospital, country, and profession) and exit destinations
    are scarce.

    Objectives: To determine the different forms of nurses’
    leaving intention (i.e., leaving the unit, hospital, country,
    and profession), exit destinations and associations of
    demographic variables on the different forms of leaving
    intention and exit destinations.

    Methods: The study design was a cross-sectional survey.
    Private hospital nurses in the Peninsular Malaysia were
    the study population and a total of 942 (73% response
    rate) nurses participated in the study. A self-reported
    questionnaire was used for data collection.

    Results: The results revealed that intention of leaving
    the organisation (M = 2.81, SD = 1.33) was the
    highest and followed by intention of leaving the unit
    (M = 2.54, SD = 1.31). In terms of exit destinations,
    advancing nursing qualification (M = 2.95, SD = 1.31)
    and practising nursing in another country (M = 2.55,
    SD = 1.31) were the most preferred exit destinations
    among the nurses.

    Conclusions: Nursing managers play a significant role in
    retaining nurses within the units and organisations. The
    findings on nurses’ exit destinations are crucial because
    they serve as the direction for nurses’ retention strategies
    which include professional development opportunities
    through training, education and staff mobility.
  8. Ng, Tony Kock Wai, Jia, Yu Tang, Low, Yip Onn, Yeoh, Loo Zheng Wei Yeoh, Gan, Cai Li
    MyJurnal
    Introduction: Dietary fibre (DF) and fluid intakes
    have been reported elsewhere to reduce the risk
    of constipation. The association of these dietary
    components on Agachand’s Constipation Score (CS)
    was investigated in the present study.

    Methods: A total of 202 Malaysian participants
    comprising 50 adolescents (aged 12.4 ± 5.3 yrs),
    50 adults (aged 46.3 ± 11.3 yrs), 52 women of childbearing
    age (aged 29.1 ± 9.3 yrs) and 50 elderly persons
    (aged 70.0 ± 7.4 yrs) were recruited by convenience
    sampling from five venues - two communities in Cheras,
    one community in Klang, the IMU campus, Bukit Jalil
    and a private secondary school in Klang. All participants
    were interviewed with a previously-evaluated food
    frequency questionnaire (FFQ) and an Agachand’s
    Constipation Score (CS) Questionnaire.

    Results: Mean daily DF intakes were low across all
    age groups with means ranging from 10.0 – 15.6g.
    The percentage of subjects with daily DF intakes below
    the “deficient” cut-off of 20g was alarmingly high;
    80% in adolescents, 45% in adults, 85% in women of
    child-bearing age and 70% in the elderly. About onefifth
    or 20% of subjects in all age groups had CS values
    ≥15 which indicated a problem of constipation.
    Mean daily total fluid consumption (TFC) ranged
    from 2128 – 5490 ml in the four categories of subjects.
    Overall, both daily DF intakes and TFC were negatively
    associated with CS values. This inverse association was
    significant for DF vs CS scores in adolescents (r = -0.500,
    p = 0.001), adults (r = -0.351, p = 0.013), the elderly
    (r = -0.392, p = 0.005) and all subjects combined
    (r = -0.366, p=0.001). For TFC vs CS scores, the
    inverse association was only significant for the elderly
    (r = -0.312, p = 0.027) and all subjects combined
    (r = -0.245, p = 0.001).

    Conclusion: The results of this study support the role
    of dietary fibre intake and TFC in reducing the risk of
    constipation, as well as reinforcing previous data for low
    DF intakes among the Malaysian population.
  9. Leng CH, Lim SY, Siew WF
    MyJurnal
    Background: Nurses are the highest numbered healthcare professionals who work in a knowledgedriven environment, where accurate and updated information is needed when delivering care to clients. Information literacy has therefore become one of the criteria in determining nurses’ readiness for evidencebased practice in recent years. In the actual day-to-day care practice, are nurses ready for this?
    Objective: To determine the information literacy competency in readiness for evidence-based practice among clinical practicing registered nurses in a private hospital in Penang, Malaysia.
    Methods: This cross sectional descriptive study was conducted in the selected private hospital. Universal sampling method was used. At the time of study, there were 443 registered nurses who met the eligibility criteria of this study. The registered nurses were asked to complete a self-reporting questionnaire about information literacy for evidence-based practice.
    Results: The response rate was 86.2%, with a total of 382 returned questionnaires. Less than half of the participants (47%) stated that they frequently sourced information to support nursing practice. Poor research experiences among these participants were identified where 56% of the registered nurses never identified researchable problems, 59% have not evaluated a research report and 54% have never utilised research into practice. Registered nurses frequently sought information sources from colleagues or peers (65%) rather than from printed resources, where only 43% and 33% respectively make use of CINAHL and MEDLINE bibliography databases as the electronic resources for their practice.
    Conclusions: Results demonstrated that information literacy among registered nurses from this hospital was lacking. Organisation efforts are needed to create awareness of information for evidence-based practice as well as to encourage more research activities and the search of bibliography database among its registered nurses.
    Study site: Private hospital, Pulau Pinang, Malaysia
    MeSH terms: Cross-Sectional Studies; Humans; Malaysia; Nurses; Hospitals, Private; Evidence-Based Nursing; Information Literacy*
  10. Leela Chellamuthu, Ho, Siew Eng, Joel Hoashea Munjan, Susanna Emmanuel Vijayan
    MyJurnal
    Aim: This study aims to determine the perception of adult patients towards the importance of prevention of coronary artery diseases (CAD) in order to raise awareness on the risk of CAD.
    Method: 80 adults between 18-40 years old were enrolled in the out-patient department at a private hospital. The awareness and perception of the importance of preventing CAD were assessed using a questionnaire.
    Result: The level of perception on the importance of prevention of CAD was quite good. 75% of the subjects (n = 60) recorded good level of perception meaning they are aware of the importance of prevention of CAD. 22.5% of the subjects (n = 18) recorded a satisfactory level of perception while only 2.5% of the subjects (n = 2) recorded a poor level of perception towards the importance of prevention of CAD. Majority of the subjects had good perception on importance of a balanced diet, exercise and active lifestyle.
    Conclusion: In conclusion it can be said that although people are aware of the risk posed by CAD, recommendations such as proper health teachings and guide lines are still required to ensure that the community is able to understand the risk and take preventive measure in order to reduce the risk of obtaining the risk of heart disease.
    Study site: Outpatient clinic, private hospital, Malaysia
    MeSH terms: Adult; Awareness; Coronary Artery Disease; Cross-Sectional Studies; Diet; Heart Diseases; Humans; Life Style; Malaysia; Outpatient Clinics, Hospital; Outpatients; Surveys and Questionnaires; Risk; Exercise; Hospitals, Private
  11. Nur Syakilah Mahyiddin, Rosmawati Mohamed, Hamid Jan Jan Mohamed, Norfarhana Ramly
    MyJurnal
    Dengue incidence has grown dramatically in recent decades and become a global incidence especially in the
    urban area. Ministry of Health (MOH) Malaysia reported that the number of dengue cases since January
    2014 until June 2014 was 38. 411 cases which was higher compared to the number reported in year 2013 (10,
    910 cases). The objective of the study was to determine the knowledge and preventive practices of dengue
    among residents in Flat Pandan Indah, Ampang Selangor. A cross sectional study design with convenience
    sampling method was adopted in this study. A total of 298 respondents living in Flat Pandan Indah were
    recruited based on the inclusion criteria. A validated questionnaire that measures knowledge and preventive
    practices of dengue was completed by respondents. More than half of the respondents had scored 61.7%
    with good knowledge regarding dengue. However, 50.3% of the respondents had a limited extent of dengue
    practice. Almost all of the respondents (95.6%) reported that television or radio as the main source for
    information on dengue. The common preventive measures used by the respondents were cleaning the
    house (n=148, 49.7%), eliminating standing water around the house (n=123, 41.3%) and covering water
    containers in the home (n=120, 40.a3%). There was no correlation between dengue knowledge and
    preventive practice score (p = 0.109). The study revealed that majority of the respondents had good
    knowledge regarding dengue but the practices to prevent dengue are poor. Thus, health education program
    focusing on dengue prevention practices should be done on the community members in the future.
    MeSH terms: Cross-Sectional Studies; Dengue; Drama; Health Education; Health Promotion; Malaysia; Surveys and Questionnaires; Television; Water; Incidence
  12. Lai, Sue Yi, Soon, Lean Keng, Nik Mohamed Zaki Nik Mahmood, Naji Mahat
    MyJurnal
    The prevalence of gestational diabetes mellitus (GDM) is increasing worldwide and even in Malaysia. Hence, the knowledge of adiponectin with regards to gestational diabetes mellitus is a key contributor to disparity in maternal and neonatal morbidities. This study aimed to assess nurses' knowledge of adiponectin and its association with gestational diabetes and obesity in pregnancy. A cross-sectional survey was employed. Respondents were selected by purposive sampling using a pre-tested, structured questionnaire. Ninety one nurses (100%) were aware that obesity increased adverse health outcome among pregnant women, but some confusion exits among nurses about adiponectin with regards to pregnancy. Most of the nurses lack condence in providing care to pregnant women with many (82.4%) addressed the need for education on this topic. In the one-way ANOVA analysis, nurses' knowledge score was significantly associated with education level (p<0.001) and working experience in maternity units (p<0.001). This study demonstrates gaps in the knowledge of adiponectin and its association with obesity and pregnancy. Continuous nursing education for nurses on adiponectin and obesity-related issues in early pregnancy should be strengthened to enhance knowledge and confidence in providing quality antenatal services.
    Keywords : Nurses, adiponectin, obesity, pregnancy, gestational diabetes
    MeSH terms: Adult; Cross-Sectional Studies; Female; Health Knowledge, Attitudes, Practice*; Malaysia; Nurses; Obesity; Pregnancy*; Diabetes, Gestational*; Adiponectin*
  13. Dariah Mohd Yusoff, Junaiti Yusof, Kueh, Yee Cheng
    MyJurnal
    Patients with chronic diseases such as diabetes, hypertension and cardiovascular diseases are known as
    high-risk groups for developing chronic kidney disease (CKD). Adequate related knowledge among them
    helps to increase their awareness towards CKD and adapt healthy attitude and practices for CKD
    prevention, which will result in better health outcomes. This study aimed to identify the patients'
    knowledge, attitude, and practices (KAP) towards the risks for CKD. This cross-sectional study used a selfadministered
    survey questionnaire on 103 adult male and female patients at four general surgical and
    medical wards in a teaching hospital using convenient sampling method. The data were computed using
    STATA version 12. Data on KAP were obtained through the Chronic Kidney Disease Screening Index
    questionnaire. The majority of respondents had poor knowledge (69.9%, n=72), but most of them had good
    attitude (68.9%, n=71) and good practices (88.3%, n=91) towards the risk of CKD. Significant associations
    were indicated between education level, occupation and monthly family income with knowledge (p-value <
    0.05). Significant associations were also indicated between age, sex, marital status and occupation with
    their attitude (p-value < 0.05). Meanwhile, marital status was found to be significantly associated with the
    practices towards the risk for CKD (p-value=0.008).
    Poor knowledge on the risk of getting CKD among hospitalized adults in this study implied the need for
    improvement in the public understanding towards the risk for CKD.
    MeSH terms: Adult; Awareness; Cardiovascular Diseases; Chronic Disease; Cross-Sectional Studies; Diabetes Mellitus; Female; Hospitals, Teaching; Humans; Hypertension; Male; Occupations; Surveys and Questionnaires; Marital Status; Renal Insufficiency, Chronic
  14. Malek, M.F., Mamat, M.H., Ismail, A.S., Mohamed, R., Salifairus, M.J., Khusaimi, Z., et al.
    Science Letters, 2016;11(2):36-40.
    MyJurnal
    We had successfully synthesised Mg-doped zinc oxide (MZO) and Cudoped zinc oxide (CZO) nanorod arrays (NRAs) on Al-doped ZnO (ZAO)-coated glass substrates using immersion method and investigated their structural properties. With the incorporation of the Mg dopant, the length and crystallinity of MZO NRAs is higher compared to that of the CZO NRAs. The average optical transmittance of MZO NRAs was slightly lower than that of the CZO NRAs over the visible wavelength region. With the incorporation of the Cu dopant, the morphology of the CZO sample was slightly different from that of the MZO NRAs. The CZO NRAs present granular with small sphere shape. On the other hand, the MZO NRAs exhibit a hexagonal shape structure with a flat-top facet. Rods with a diameter of 58.9-96.7 nm were uniformly grown on the ZAO-coated glass substrate. This paper presents the growth behaviors of the MZO and CZO NRAs.
    MeSH terms: Clothing; Glass; Zinc Oxide; Retinal Rod Photoreceptor Cells; Nanotubes
  15. Erfan Mohammadian, Deana Qarizada, Azil Bahari Alias, Zulkafli Hassan, Sabet, Maziyar
    Science Letters, 2016;11(2):30-35.
    MyJurnal
    The demand for sustainable fuels on one hand and the shortage of conventional energy resources on the other hand, has led to the need for the development of alternative, environmentalfriendly fuels. Hence, the objectives of the current study were to produce a liquid fuel (bio-oil) from Empty fruit bunch (EFB) and to characterizes the bio oil by fast pyrolysis method, in a batch feeding and fixed bed reactor. The Temperature was set to 500°C for all the distillation experiments and the bio oil was collected from the condenser. The total yield of bio oil based on EFB was 66wt.%. The non-condensable gases obtained from the process were CO2, CO, CH4, C2H6, C2H4, C3H8 and C3H6. The higher heating value (HHV) was 27 MJ/Kg. The physical and chemical properties of the produced oil was also determined and discussed in this paper.The moisture, volatile mater and ash were determined and found to be around 1.4391wt %, 6.0182wt% and 1.3906wt%respectively.

    The outcomes of this research demonstrated that the produced bio-oil could be considered as an eco-friendly fuel. However, further modifications are required to make it more efficient for industrial-scale (mass production) of EFBproduced bio oil in the near future.
  16. Mohammad Hafizudden Mohd Zaki, Yusairie Mohd, Nik Norziehana Che Isa
    Science Letters, 2016;11(2):20-29.
    MyJurnal
    Mild steel is the most common metal used in industry. However, mild steel easily corrodes when exposed to environment. One way to protect mild steel from corrodes is by coating it with more noble metal like copper and its alloys. In this study, copper and Cu-Ni alloys were successfully coated on the mild steel substrate by electrodeposition technique using alkaline citrate solutions containing Cu and Ni ions precursors. The reaction and mechanisms of the electrodeposition of copper and Cu-Ni alloys on the mild steel substrate were investigated by cyclic voltammetry and chronoamperometry methods. Surface morphology of the coatings was examined by FESEM. The elemental compositions of the coatings were confirmed by EDAX analysis. The molar ratios of Cu-Ni solutions have affected the formation of the coatings. Corrosion study shows that copper coated mild steel can improve the corrosion resistance of the mild steel in 0.5 M NaCl. Cu-Ni coating prepared from Cu60-Ni40 showed the highest corrosion resistance. The order of the corrosion resistance of the samples in 0.5 M NaCl at 25 oC is Cu60-Ni40> Cu75- Ni25> Cu90-Ni10> Cu100> mild steel.
    MeSH terms: Alloys; Citrates; Copper; Corrosion; Electroplating; Ions; Metals; Steel; Citric Acid
  17. Siti Norbayu Mohd Subari, Rozita Osman, Norashikin Saim
    Science Letters, 2016;11(2):15-19.
    MyJurnal
    Acetaminophen, an analgesic drug was evaluated as potential chemical marker for wastewater contamination. Water samples of various sources were analysed using online solid phase extraction liquid chromatography with diode array detector. Acetaminophen was detected in the range of 0.17-1.29 ng/mL in surface water samples contaminated with wastewater. Relatively high concentrations (16.7-74.61 ng/mL) of acetaminophen were observed in water samples from Universiti Teknologi MARA (UiTM) treatment plant monitored from March to August 2014. Positive correlation was obtained between the concentrations of acetaminophen with the students’ population based on UiTM academic calendar.
  18. Husham, M., Hassan, Z., Ahmed A. Al-Dulaimi
    Science Letters, 2016;11(2):11-14.
    MyJurnal
    Nanocrystalline lead sulfide (PbS) thin films have been successfully grown on glass substrate using the chemical bath deposition technique. Microwave oven was used as a heating source to facilitate the growth process of the thin films. Aqueous solutions of lead nitrate Pb(NO3) and thiourea [SC(NH2)2] were used as lead and sulfur ion sources, respectively. Structural, morphological and optical analyses revealed good quality growth of nanocrystalline PbS thin films. This study introduced a facile and low cost method to prepare high quality nanocrystalline PbS thin films in a relatively short growth time for optoelectronic applications.
    MeSH terms: Baths; Glass; Heating; Lead; Microwaves; Nitrates; Sulfides; Sulfur; Thiourea
  19. Masar Hadi Jawad, Azizan Aziz, Sulaiman Ab Ghani
    Science Letters, 2016;11(2):1-10.
    MyJurnal
    A differential pulse adsorptive cathodic stripping voltammetric (DPAdCSV) method for the determination of lead levels in water sample by using pairs of ligands (complexing agents) / – nitrite and 1,10 phennanthroline - nitrite were investigated. Variables affecting the response such as pH, supporting electrolyte, deposition potential, deposition time, stirring speed, drop size, sweep rate, pulse amplitude and ligand concentration were studied. Under optimized conditions the relationship between peak current and lead concentration with 2,2ʹ-bipyridine - nitrite and 1,10 phennanthroline - nitrite were linear in the range of 10 - 500 ng mL-1 and 7–500 ng mL-1 with limit of detection of 0.48 ng mL-1 and 0.36 ng mL -1 respectively . The relative standard deviations (RSD) for 9 determinations of 25 ng mL−1 Pb (II) using 2,2ʹ-bipyridine - nitrite and 1,10 phennanthroline - nitrite were 1.74% and 1.84%, respectively. The values obtained for the proposed technique correlated well with those of atomic absorption spectrometry (AAS) as the standard method with correlation coefficient (R2 ) of 0.9991 and 0.9986. The method was applied for the determination of lead in sea, lake and tap waters. The interferences of other metals and major salts present were negligible except iron (III) and Aluminum (III)
  20. Ahmad Lutfi Anis, Talari, Mahesh Kumar, Widyani Darham
    Science Letters, 2016;10(1):24-26.
    MyJurnal
    Superhydrophobic surfaces have attracted significant research interest because of their use for design of water-repellent and self-cleaning coatings. A superhydrophobic surface can be created by modifying a rough surface with a material of low surface energy through a sol-gel coating technique. Adjusting the amount of precursor and the low surface energy material can optimize the hydrophobicity of the coating. In this work, different ratios (4:1, 3:2, 1:1 and 2:3) of silane: alumina coatings were synthesized and applied on glass substrates through sol-gel method. Characterization of the coated samples showed that volume ratios of silane sol and alumina sol in sol-gel coating affected the superhydrophobicity of the coated glass substrate. The solution of alumina sol and silane sol with ratio 4:1 produced superhydrophobic films with contact angle for water larger than 150 and FESEM images showed very intense roughness compared to the other ratios.
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