Browse publications by year: 2018

  1. Mohd Sharif NA, Che Hasan MK, Che Jamaludin FI, Zul Hasymi Firdaus MK
    Enferm Clin, 2018 Feb;28 Suppl 1:13-18.
    PMID: 29650169 DOI: 10.1016/S1130-8621(18)30028-7
    OBJECTIVE: The objective of this study is to identify the need for basic first aid knowledge and skills among adolescents.

    METHOD: A cross-sectional study using multistage sampling was conducted among 375 secondary school students in Kuantan, Pahang, Malaysia. The survey was adapted from a Hong Kong Red Cross survey. A back to back translation of this instrument was carried out by two bilingual medical experts with Cronbach's alpha 0.8. The data were analyzed using SPSS (Statistical Package for the Social Sciences) in terms of descriptive analysis, and an independent t-test and chi-square test were carried out.

    RESULTS: There were 149 respondents from the lower form (grade level) and 226 respondents from the upper form. The majority of respondents (81.6%) were Malay. An independent t-test revealed a significant association between knowledge and attitude, as students who scored higher on first aid questions showed a more positive attitude towards first aid (1.475%). There were also significant associations between race and experience learning first aid.

    CONCLUSIONS: Adolescents receive minimal first aid education. Thus, there is an urgent need to educate adolescents more in first aid to promote a safer community and to prevent any further injuries.

    MeSH terms: Adolescent; Cross-Sectional Studies; Female; First Aid*; Health Education; Humans; Health Knowledge, Attitudes, Practice*; Male
  2. Thandar Aung K, Ain Binti Jamal NQ
    Enferm Clin, 2018 Feb;28 Suppl 1:139-143.
    PMID: 29650172 DOI: 10.1016/S1130-8621(18)30054-8
    OBJECTIVE: The aim of this study was to explore the nurse managers' perspectives on nurses' performance in a mentorship program.

    METHOD: A cross-sectional survey was conducted on 51 nurse managers in Hospital Tengku Ampuan Afzan (HTAA), Kuantan, Pahang, by using modified and self-developed questionnaire with the Cronbach's alpha value 0.994. The data were analyzed by using descriptive statistics such as central tendency, frequency and percentage.

    RESULTS: The gender of respondents was predominantly female (100%). The mean age is 45.41 (SD ± 4.51). In terms of level of education, the majority of the respondents (76.5%) were having a diploma. The majority has been in practice as a staff nurse between 11 to 20 years, and most of them have been practicing as nurse managers for about five years and less. Meanwhile, results showed that the nurse managers had positive perceptions upon newly graduated nurses' performance in the mentorship program, concerning on their effective communication, professional development and creative thinking.

    CONCLUSIONS: It is vital to identify the effectiveness of the mentorship program among nurses; hence, it enhances job satisfaction among new nurses.

    MeSH terms: Adult; Cross-Sectional Studies; Female; Humans; Male; Mentors*; Middle Aged; Nurse Administrators*
  3. Saidi S, Iliani Jaafar SN, Daud A, Musa R, Nik Ahmad NNF
    Enferm Clin, 2018 Feb;28 Suppl 1:180-183.
    PMID: 29650181 DOI: 10.1016/S1130-8621(18)30063-9
    OBJECTIVE: The aim of this study was to investigate the correlation between levels of depression symptoms and age, thyroid-stimulating hormone levels, and stressful life events of the participants.

    METHOD: Patients above 18 years old, with any thyroid disorders, and without psychiatric disorders were included in this study. All participants completed the Depression Anxiety Stress Scale 21 (DASS-21). The depression symptom score was calculated and interpreted as follows: less than 9: no depression; between 10 and 13: mild depression; between 14 and 20: moderate depression; between 21 and 27: severe depression, and more than 28: extremely severe depression.

    RESULTS: The total number of participants in this study was 199. There was no correlation between age, thyroid stimulating hormone, and the DASS score. There was also no significant difference in the DASS-21 score between genders. However, there was a positive correlation between depression symptoms and stressful life events (r=0.201, n=199, p < 0.05).

    CONCLUSIONS: These findings would suggest that increased depression symptom scores correlate with increased stressful life events. A larger study should be undertaken to confirm these findings.

    MeSH terms: Adolescent; Adult; Age Factors; Aged; Aged, 80 and over; Cross-Sectional Studies; Depression/blood*; Depression/diagnosis*; Depression/etiology; Female; Humans; Male; Middle Aged; Psychological Tests; Sex Factors; Thyroid Diseases/blood*; Thyroid Diseases/complications; Thyrotropin/blood*; Young Adult
  4. Mohamad Ismail MF, Abdullahi Hashi A, Bin Nurumal MS, Bin Md Isa ML
    Enferm Clin, 2018 Feb;28 Suppl 1:212-216.
    PMID: 29650189 DOI: 10.1016/S1130-8621(18)30070-6
    Health workers, like nurses are tasked to save the lives of their patients, however, there are instances in which health workers have to deal with difficult cases in taking a life, such as abortion. Scholars in the field of healthcare assert that abortion is morally justified if it is sought for health reasons. Nevertheless, there are a number of cases in which abortion is sought on other grounds other than health, such as the individual choice to do so. Can a nurse refuse to provide their professional service towards these people? This paper uses analytical and comparative methods to address ethical issues in abortion from the Islamic and conventional perspectives. Nursing implication: Since the nurses instruct and assist people in forming a decision as they engage in nursing care, utilising a comprehensive view of abortion based on Islamic sources would provide a foundation in Muslim perspectives as they interact with Muslim patients. The subject area to investigate the degree of knowledge among nurses regarding the Islamic moral judgement on this event is extremely recommended for future management.
    MeSH terms: Abortion, Induced/ethics*; Ethics, Nursing*; Female; Humans; Islam*; Morals*
  5. Nik Mohd Hatta NNK, Lokman M, Said N M, Daud A, Ibrahim M, Sharifudin MA, et al.
    Enferm Clin, 2018 Feb;28 Suppl 1:232-235.
    PMID: 29650194 DOI: 10.1016/S1130-8621(18)30074-3
    OBJECTIVE: The study aims to identify the risk of obtaining a fracture among post-menopausal women with osteopenia and osteoporosis.

    METHOD: This work was a cross-sectional study involving a purposive sample of 87 post-menopausal women who attended the orthopedic and menopause clinics of Hospital Tengku Ampuan Afzan, Kuantan. The data were entered into the WHO fracture risk assessment tool (FRAX®) to predict major fracture and risk for hip fracture in 10 years' time.

    RESULTS: The mean age of the respondents was 61.6 years (SD=7.9). Among the respondents, 50.6% had osteopenia and nearly half (48.3%) had osteoporosis. The mean number of menopausal years of the respondents was 11.9 (SD=8.5), ranging between 1 and 44 years. The FRAX findings indicated 9.7% major osteoporotic fracture probability and 3.5% hip fracture probability, which were denoted as high risk. A Pearson correlation coefficient was computed to assess the relationship between menopausal years and the FRAX major osteoporotic fracture probability. A significant positive correlation was found between the two, but the correlation was weak (r=0.581, n=87, p < 0.001).

    CONCLUSIONS: The present findings indicate that menopausal years have a positive correlation with the risk of obtaining a fracture.

    Study site: orthopedic and menopause clinics of Hospital Tengku Ampuan Afzan, Kuantan.
    MeSH terms: Bone Diseases, Metabolic/complications*; Cross-Sectional Studies; Female; Forecasting; Hip Fractures/etiology*; Hip Fractures/epidemiology; Hospitals, General; Humans; Malaysia; Middle Aged; Osteoporosis/complications*; Outpatient Clinics, Hospital; Osteoporosis, Postmenopausal*; Risk Assessment
  6. Kleinschmidt I, Bradley J, Knox TB, Mnzava AP, Kafy HT, Mbogo C, et al.
    Lancet Infect Dis, 2018 Jun;18(6):640-649.
    PMID: 29650424 DOI: 10.1016/S1473-3099(18)30172-5
    BACKGROUND: Scale-up of insecticide-based interventions has averted more than 500 million malaria cases since 2000. Increasing insecticide resistance could herald a rebound in disease and mortality. We aimed to investigate whether insecticide resistance was associated with loss of effectiveness of long-lasting insecticidal nets and increased malaria disease burden.

    METHODS: This WHO-coordinated, prospective, observational cohort study was done at 279 clusters (villages or groups of villages in which phenotypic resistance was measurable) in Benin, Cameroon, India, Kenya, and Sudan. Pyrethroid long-lasting insecticidal nets were the principal form of malaria vector control in all study areas; in Sudan this approach was supplemented by indoor residual spraying. Cohorts of children from randomly selected households in each cluster were recruited and followed up by community health workers to measure incidence of clinical malaria and prevalence of infection. Mosquitoes were assessed for susceptibility to pyrethroids using the standard WHO bioassay test. Country-specific results were combined using meta-analysis.

    FINDINGS: Between June 2, 2012, and Nov 4, 2016, 40 000 children were enrolled and assessed for clinical incidence during 1·4 million follow-up visits. 80 000 mosquitoes were assessed for insecticide resistance. Long-lasting insecticidal net users had lower infection prevalence (adjusted odds ratio [OR] 0·63, 95% CI 0·51-0·78) and disease incidence (adjusted rate ratio [RR] 0·62, 0·41-0·94) than did non-users across a range of resistance levels. We found no evidence of an association between insecticide resistance and infection prevalence (adjusted OR 0·86, 0·70-1·06) or incidence (adjusted RR 0·89, 0·72-1·10). Users of nets, although significantly better protected than non-users, were nevertheless subject to high malaria infection risk (ranging from an average incidence in net users of 0·023, [95% CI 0·016-0·033] per person-year in India, to 0·80 [0·65-0·97] per person year in Kenya; and an average infection prevalence in net users of 0·8% [0·5-1·3] in India to an average infection prevalence of 50·8% [43·4-58·2] in Benin).

    INTERPRETATION: Irrespective of resistance, populations in malaria endemic areas should continue to use long-lasting insecticidal nets to reduce their risk of infection. As nets provide only partial protection, the development of additional vector control tools should be prioritised to reduce the unacceptably high malaria burden.

    FUNDING: Bill & Melinda Gates Foundation, UK Medical Research Council, and UK Department for International Development.

    MeSH terms: Adolescent; Animals; Child; Child, Preschool; Humans; India/epidemiology; Infant; Insecticide Resistance; Prospective Studies; World Health Organization; Cohort Studies; Africa South of the Sahara/epidemiology; Internationality; Insecticide-Treated Bednets*
  7. Rizan N, Yew CY, Niknam MR, Krishnasamy J, Bhassu S, Hong GZ, et al.
    Sci Rep, 2018 Apr 12;8(1):6009.
    PMID: 29651139 DOI: 10.1038/s41598-018-24116-5
    A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
    MeSH terms: Paper; Publications
  8. Yik LY, Chin GJWL, Budiman C, Joseph CG, Musta B, Rodrigues KF
    Indian J Microbiol, 2018 Jun;58(2):165-173.
    PMID: 29651175 DOI: 10.1007/s12088-017-0701-1
    The adaptive process in bacteria is driven by specific genetic elements which regulate phenotypic characteristics such as tolerance to high metal ion concentrations and the secretion of protective biofilms. Extreme environments such as those associated with heavy metal pollution and extremes of acidity offer opportunities to study the adaptive mechanisms of microorganisms. This study focused on the genome analysis of Bacillus thuringiensis (Bt MCMY1), a gram positive rod shaped bacterium isolated from an acid mine drainage site in Sabah, Malaysia by using a combination of Single Molecule Real Time DNA Sequencing, Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The genome size of Bt MCMY1 was determined to be 5,458,152 bases which was encoded on a single chromosome. Analysis of the genome revealed genes associated with resistance to Copper, Mercury, Arsenic, Cobalt, Zinc, Cadmium and Aluminum. Evidence from SEM and FTIR indicated that the bacterial colonies form distinct films which bear the signature of polyhydroxyalkanoates (PHA) and this finding was supported by the genome data indicating the presence of a genetic pathway associated with the biosynthesis of PHAs. This is the first report of a Bacillus sp. isolated from an acid mine drainage site in Sabah, Malaysia and the genome sequence will provide insights into the manner in which B. thuringiensis adapts to acid mine drainage.
  9. Mohamad NI, Harun A, Hasan H, Deris ZZ
    Indian J Microbiol, 2018 Jun;58(2):244-247.
    PMID: 29651186 DOI: 10.1007/s12088-018-0722-4
    Although doxycycline is active against Burkholderia pseudomallei and has been used in the eradication stage of melioidosis therapy, it is not regularly used during the initial intensive phase. In order to assess its potential use in intensive phase therapy, we investigated in vitro pharmacodynamic activity of doxycycline and β-lactams alone and in combination against four Malaysian strains of B. pseudomallei. Using a checkerboard assay, the combinations of doxycycline and imipenem, doxycycline and ceftazidime, and doxycycline and amoxicillin-clavulanate tested against four strains showed indifferent effects with summation fractional inhibitory concentration values ranging from 0.62 to 2.12. Time-kill experiments also indicated that the combinations of doxycycline/β-lactam antibiotics against four tested strains did not fulfil synergy criteria, in which all combinations showed indifferent effects with - 1.36 to 1.26-log CFU/mL compared to the most active monotherapy regimen in each combination. No re-growth of bacteria was detected after the early killing in doxycycline/β-lactam combination regimens compared to β-lactam monotherapy regimens, in which 9 out of 10 were associated with re-growth of bacteria. As no synergistic activity was observed, this in vitro study showed that doxycycline offers no additional benefit to be used in combination with β-lactams in the intensive phase of therapy.
  10. Bharosay A, Bharosay VV, Saxena K, Varma M
    Indian J Clin Biochem, 2018 Apr;33(2):178-183.
    PMID: 29651208 DOI: 10.1007/s12291-017-0664-3
    This study was undertaken to evaluate the role of serum neuron specific enolase (NSE) in prediction of disability and neurological worsening in hypertensive ischemic cerebrovascular stroke. 80 hypertensive ischemic stroke patients diagnosed by a neurologist as per WHO definition along with radiological findings suggestive of cerebrovascular stroke and differentiating from hemorrhagic stroke and 60 controls having essential hypertension coming to hospital because of regular checkup or headache but with no neurological disease were included in the study. Neurological disability was assessed by NIHSS at the time of admission (within 72 h from the onset of stroke) and on 7th day after admission and cases were categorized into mild, moderate and severe disability. Venous blood samples were drawn within 72 h from the onset of symptoms. The samples were processed as per the laboratory protocol. The serum NSE samples were analyzed using an enzyme immunoassay based on the sandwich technique. We observed raised serum NSE in hypertensive ischemic stroke (17.4 ± 5.4 ng/ml) with significant association between different hypertensive groups than in hypertensive controls (9.1 ± 0.75 ng/ml). Greater degree of disability was observed in hypertensive stroke patients with raised serum NSE and hypertensive patients with mean serum NSE level of 22.9 ± 3.6 ng/ml and dyslipidemia had greater probability of neurological worsening as compared to those with mean serum NSE level of 12.7 ± 1.2 ng/ml. Serum NSE levels can serve as a peripheral indicator of neuronal damage and assist in the prediction of disability and clinical outcome in hypertensive cerebrovascular ischemic stroke patients.
  11. Solarin SA, Gil-Alana LA, Al-Mulali U
    Environ Sci Pollut Res Int, 2018 Jun;25(18):17289-17299.
    PMID: 29651729 DOI: 10.1007/s11356-018-1920-7
    In this article, we have examined the hypothesis of convergence of renewable energy consumption in 27 OECD countries. However, instead of relying on classical techniques, which are based on the dichotomy between stationarity I(0) and nonstationarity I(1), we consider a more flexible approach based on fractional integration. We employ both parametric and semiparametric techniques. Using parametric methods, evidence of convergence is found in the cases of Mexico, Switzerland and Sweden along with the USA, Portugal, the Czech Republic, South Korea and Spain, and employing semiparametric approaches, we found evidence of convergence in all these eight countries along with Australia, France, Japan, Greece, Italy and Poland. For the remaining 13 countries, even though the orders of integration of the series are smaller than one in all cases except Germany, the confidence intervals are so wide that we cannot reject the hypothesis of unit roots thus not finding support for the hypothesis of convergence.
    MeSH terms: Australia; France; Germany; Greece; Italy; Japan; Mexico; Poland; Portugal; Spain; Sweden; Switzerland; Confidence Intervals; Czech Republic; Republic of Korea; Renewable Energy; Organisation for Economic Co-Operation and Development
  12. Abdullah N, Borhanuddin B, Patah AEA, Abdullah MS, Dauni A, Kamaruddin MA, et al.
    J Evid Based Integr Med, 2018 4 14;23:2515690X18765945.
    PMID: 29651870 DOI: 10.1177/2515690X18765945
    BACKGROUND: This study aimed to identify the factors of CAM usage for general health and to determine the factors associated with the usage of different types of CAM after the diagnosis of chronic diseases among The Malaysian Cohort participants.
    METHODS: This was a cross-sectional study derived from The Malaysian Cohort (TMC) project, a prospective population-based cohort aged between 35 to 65 years old that recruited from April 2006 to September 2012. Association between the CAM usage and contributing factors were determined via logistic regression.
    RESULTS: The sample were mostly female (58.1%), Malays (43.1%), came from urban (71.9%), aged 44 years and below (26.8%) and had secondary education (45.9%). The prevalence of CAM usage varied across diseases; 62.8% in cancer patients, 53.3% in hypercholesterolemia, 49.4% in hypertensives and 48.6% in diabetics. General CAM usage was greater among female (OR: 1.54, 95% CI: 1.49, 1.59), Chinese (OR: 1.15, 95% CI: 1.12, 1.19), those with higher education (OR: 3.12, 95% CI: 3.00, 3.25), urban residents (OR: 1.55, 95% CI: 1.50, 1.61) and older people (OR ranging from 1.15 to 1.75) while for post-diagnosis of chronic diseases usage, the odds were higher among those with lower education and living in rural areas.
    CONCLUSION: Health status, educational level, age, living location and types of chronic diseases were significant factors that influence CAM usage for the intent of either health maintenance or disease treatment. Further exploration on CAM safety and benefit are crucial to minimize the adverse effect and to ensure the efficacy of CAM product.
    Study name: The Malaysian Cohort (TMC) project
    MeSH terms: Complementary Therapies; Chronic Disease; Cross-Sectional Studies; Diabetes Mellitus; Female; Health Status; Humans; Hypercholesterolemia; Hyperlipidemias; Malaysia; Neoplasms; Prospective Studies; Prevalence; Logistic Models
  13. Allotey-Reidpath KD, Allotey P, Reidpath DD
    Reprod Health Matters, 2018 Dec;26(52):1451173.
    PMID: 29651926 DOI: 10.1080/09688080.2018.1451173
    Recent globally compiled evidence suggests that one-quarter of pregnancies end in abortions. However, abortions remain illegal in many countries, resulting in unsafe practices. Debates have largely stalled with the pro-life, pro-choice epithets. To provide further arguments in support of legalising abortion services, we argue that the state cannot demand of a woman that she maintains an unwanted pregnancy because that demand places her in a state of involuntary servitude. Involuntary servitude would put states in breach of international human rights law (Article 8 of International Covenant on Civil and Political Rights). Furthermore, we argue that the fact that a life may be forfeit when a woman withdraws her service is no basis for enforcing the servitude. We draw on the 13th Amendment of the US Constitution as an example to extend the argument and highlight the need to test involuntary servitude in international human rights law through mechanisms offered in the international periodic review of member states. This could provide a robust approach to support and strengthen access to safe abortion services.
    MeSH terms: Abortion, Legal/legislation & jurisprudence*; Female; Humans; Pregnancy; Pregnancy, Unwanted/psychology*; United States; Women's Rights; Personal Autonomy*
  14. Othman NA, Abdul Manaf M, Harith S, Wan Ishak WR
    J Am Coll Nutr, 2018 04 13;37(7):583-588.
    PMID: 29652576 DOI: 10.1080/07315724.2018.1451408
    OBJECTIVE: The feasibility of developing reduced-fat muffins with avocado is investigated by preparing muffins with 25%, 50%, 75%, and 100% avocado purée as a fat (butter) replacer.

    METHODOLOGY: The resulting products were compared to the control muffin, which was made with 100% butter. Muffins were analyzed for nutritional content, fatty acid profiles, and sensory acceptability.

    RESULT: Muffins incorporated with avocado purée revealed a significant increase (p < 0.05) with respect to moisture, ash, and carbohydrate in comparison with the control sample. However, no significant changes (p > 0.05) were detected in all muffin formulations for protein and dietary fiber content. Both fat content and caloric value of muffins incorporated with avocado purée were significantly decreased (p < 0.05). The fatty acid profile showed that there was an increment in the monounsaturated fatty acids (MUFA) content by 16.51% at full-fat substitution. The sensory evaluation test demonstrated that muffins had acceptability at up to 50% substitution. Fat substitution at higher than 50% lead to undesirable flavor and aftertaste, which was significant (p < 0.05) to the panelists.

    CONCLUSION: The findings indicated the feasibility of avocado purée in fat-reduced muffin preparation with an optimal level of 50% avocado purée substitution.

    MeSH terms: Butter; Carbohydrates; Dietary Fiber; Fatty Acids; Fatty Acids, Monounsaturated; Flavoring Agents; Fat Substitutes; Persea
  15. Tan GW, Visser L, Tan LP, van den Berg A, Diepstra A
    Pathogens, 2018 04 13;7(2).
    PMID: 29652813 DOI: 10.3390/pathogens7020040
    The Epstein–Barr virus (EBV) can cause a wide variety of cancers upon infection of different cell types and induces a highly variable composition of the tumor microenvironment (TME). This TME consists of both innate and adaptive immune cells and is not merely an aspecific reaction to the tumor cells. In fact, latent EBV-infected tumor cells utilize several specific mechanisms to form and shape the TME to their own benefit. These mechanisms have been studied largely in the context of EBV+ Hodgkin lymphoma, undifferentiated nasopharyngeal carcinoma, and EBV+ gastric cancer. This review describes the composition, immune escape mechanisms, and tumor cell promoting properties of the TME in these three malignancies. Mechanisms of susceptibility which regularly involve genes related to immune system function are also discussed, as only a small proportion of EBV-infected individuals develops an EBV-associated malignancy.
    MeSH terms: Herpesvirus 4, Human; Hodgkin Disease; Humans; Immune System; Lymphoma, Non-Hodgkin; Nasopharyngeal Neoplasms; Stomach Neoplasms; Tumor Microenvironment
  16. Biabanikhankahdani R, Ho KL, Alitheen NB, Tan WS
    Nanomaterials (Basel), 2018 Apr 13;8(4).
    PMID: 29652827 DOI: 10.3390/nano8040236
    Modifications of virus-like nanoparticles (VLNPs) using chemical conjugation techniques have brought the field of virology closer to nanotechnology. The huge surface area to volume ratio of VLNPs permits multiple copies of a targeting ligand and drugs to be attached per nanoparticle. By exploring the chemistry of truncated hepatitis B core antigen (tHBcAg) VLNPs, doxorubicin (DOX) was coupled covalently to the external surface of these nanoparticles via carboxylate groups. About 1600 DOX molecules were conjugated on each tHBcAg VLNP. Then, folic acid (FA) was conjugated to lysine residues of tHBcAg VLNPs to target the nanoparticles to cancer cells over-expressing folic acid receptor (FR). The result demonstrated that the dual bioconjugated tHBcAg VLNPs increased the accumulation and uptake of DOX in the human cervical and colorectal cancer cell lines compared with free DOX, resulting in enhanced cytotoxicity of DOX towards these cells. The fabrication of these dual bioconjugated nanoparticles is simple, and drugs can be easily conjugated with a high coupling efficacy to the VLNPs without any limitation with respect to the cargo's size or charge, as compared with the pH-responsive system based on tHBcAg VLNPs. These dual bioconjugated nanoparticles also have the potential to be modified for other combinatorial drug deliveries.
    MeSH terms: Cell Line; Doxorubicin; Folic Acid; Hepatitis B Core Antigens; Humans; Hydrogen-Ion Concentration; Lysine; Colorectal Neoplasms; Nanotechnology; Nanoparticles
  17. Alias NH, Jaafar J, Samitsu S, Yusof N, Othman MHD, Rahman MA, et al.
    Chemosphere, 2018 Aug;204:79-86.
    PMID: 29653325 DOI: 10.1016/j.chemosphere.2018.04.033
    Separation and purification of oilfield produced water (OPW) is a major environmental challenge due to the co-production of the OPW during petroleum exploration and production operations. Effective capture of oil contaminant and its in-situ photodegradation is one of the promising methods to purify the OPW. Based on the photocatalytic capability of graphitic carbon nitride (GCN) which was recently rediscovered, photodegradation capability of GCN for OPW was investigated in this study. GCN was synthesized by calcination of urea and further exfoliated into nanosheets. The GCNs were incorporated into polyacrylonitrile nanofibers using electrospinning, which gave a liquid-permeable self-supporting photocatalytic nanofiber mat that can be handled by hand. The photocatalytic nanofiber demonstrated 85.4% degradation of OPW under visible light irradiation, and improved the degradation to 96.6% under UV light. Effective photodegradation of the photocatalytic nanofiber for OPW originates from synergetic effects of oil adsorption by PAN nanofibers and oil photodegradation by GCNs. This study provides an insight for industrial application on purification of OPW through photocatalytic degradation under solar irradiation.
    MeSH terms: Acrylic Resins; Catalysis; Nitriles/chemistry*; Photolysis*; Ultraviolet Rays; Water/chemistry*; Water Pollutants, Chemical/chemistry; Water Purification/methods; Nanofibers/chemistry*; Oil and Gas Fields/chemistry*
  18. Lee KKS, Chong JQ, Abu Bakar AK
    Asian J Psychiatr, 2018 Apr;34:59-60.
    PMID: 29653342 DOI: 10.1016/j.ajp.2018.04.021
    MeSH terms: Absenteeism*; Adolescent; Anxiety Disorders/etiology*; Anxiety Disorders/therapy; Child; Combined Modality Therapy; Desensitization, Psychologic/methods; Female; Humans; Lupus Erythematosus, Systemic/psychology*; Malaysia; Male; Patient Education as Topic/methods; Psychotherapy/methods; Schools; Students/psychology
  19. Chen W, Li H, Hou E, Wang S, Wang G, Panahi M, et al.
    Sci Total Environ, 2018 Sep 01;634:853-867.
    PMID: 29653429 DOI: 10.1016/j.scitotenv.2018.04.055
    The aim of the current study was to produce groundwater spring potential maps using novel ensemble weights-of-evidence (WoE) with logistic regression (LR) and functional tree (FT) models. First, a total of 66 springs were identified by field surveys, out of which 70% of the spring locations were used for training the models and 30% of the spring locations were employed for the validation process. Second, a total of 14 affecting factors including aspect, altitude, slope, plan curvature, profile curvature, stream power index (SPI), topographic wetness index (TWI), sediment transport index (STI), lithology, normalized difference vegetation index (NDVI), land use, soil, distance to roads, and distance to streams was used to analyze the spatial relationship between these affecting factors and spring occurrences. Multicollinearity analysis and feature selection of the correlation attribute evaluation (CAE) method were employed to optimize the affecting factors. Subsequently, the novel ensembles of the WoE, LR, and FT models were constructed using the training dataset. Finally, the receiver operating characteristic (ROC) curves, standard error, confidence interval (CI) at 95%, and significance level P were employed to validate and compare the performance of three models. Overall, all three models performed well for groundwater spring potential evaluation. The prediction capability of the FT model, with the highest AUC values, the smallest standard errors, the narrowest CIs, and the smallest P values for the training and validation datasets, is better compared to those of other models. The groundwater spring potential maps can be adopted for the management of water resources and land use by planners and engineers.
    MeSH terms: Altitude; Engineering; Surveys and Questionnaires; ROC Curve; Soil; Trees; Confidence Intervals; Logistic Models; Area Under Curve; Rivers; Groundwater; Natural Springs; Water Resources
  20. Ahmadi F, Akmar Abdullah SN, Kadkhodaei S, Ijab SM, Hamzah L, Aziz MA, et al.
    Plant Physiol Biochem, 2018 Jun;127:320-335.
    PMID: 29653435 DOI: 10.1016/j.plaphy.2018.04.004
    Oil palm is grown in tropical soils with low bioavailability of Pi. A cDNA clone specifically expressed under phosphate-starvation condition in oil palm roots was identified as a high-affinity phosphate transporter (EgPHT1). The deduced amino acid sequence has 6 transmembrane domains each at the N- and C-termini separated by a hydrophilic linker. Comparison of promoter motifs within 1500 bp upstream of ATG of 10 promoters from high- and low-affinity phosphate transporter from both dicots and monocots including EgPHT1 was performed. The EgPHT1 promoter was fused to β-glucuronidase (GUS) reporter gene and its activity was analysed by histochemical and fluorometric GUS assays in transiently transformed oil palm tissues and T3 homozygous transgenic Arabidopsis plants. In response to Pi-starvation, no GUS activity was detected in oil palm leaves, but a strong inducible activity was observed in the roots (1.4 times higher than the CaMV35S promoter). GUS was specifically expressed in transgenic Arabidopsis roots under Pi deficiency and starvation of the other macronutrients (N and K) did not induce GUS activity. Eight motifs including ABRERATCAL (abscisic-acid responsive), RHERPATEXPA7 (root hair-specific), SURECOREATSULTR11 (sulfur-deficiency response), LTRECOREATCOR15 (temperature-stress response), MYB2CONSENSUSAT and ACGTATERD1 (water-stress response) as well as two novel motifs, 3 (TAAAAAAA) and 26 (TTTTATGT) identified through pattern discovery, occur at significantly higher frequency (p 
    MeSH terms: Phosphates/deficiency*; Promoter Regions, Genetic/physiology*; Plant Leaves/genetics; Plant Leaves/metabolism
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