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Penilaian Kesan Antropogenik terhadap Kualiti Air di Tanah Bencah Setiu, Terengganu (Evaluation of the effect of Anthropogenics towards air quality in Tanah Bencah, Setiu, Terengganu).

Suhaimi Suratman, Norhayati Mohd Tahir, Rosnani Jusoh, Marinah Mohd Ariffin

Sains Malaysiana, 2005;34.

A study was carried out to determine the distribution of nutrient, chlorophyll-a and the physical properties of water at Setiu Wetland from May-October 2001. Ten sampling stations were selected to represent various locations within the study area. The analyses of dissolved nutrients and chlorophyll-a were carried out based on colorimetric methods while the physical parameters were measured in situ. The results indicated that pH values between 5.15-8.03, dissolved oxygen 4.89-6.85 mg/L, biological oxygen demand 0.04-1.80 mg/L and total suspended solids 1.3-19.7 mg/L. The concentrations of orthophosphate, total dissolved phosphate, nitrate, ammonia, total dissolved nitrogen and chlorophyll-a were in the range of 0.19-2.85 Î¼g P/L, 1.06-25.81 Î¼g P/L, 1.48-89.66 Î¼g N/L. 6.0-125.7 Î¼g N/L. 122.50-432.34 Î¼g N/L and 0.03Â4.32 mg/L, respectively. In addition, the results obtained also suggest possible linkage between land use practices and deteriorations of water quality in the wetland area.
[Satu kajian telah dijalankan untuk menentukan taburan nutrien, klorofil-a dan sifat fizikal air di Tanah Bencah Setiu dari bulan Mei-Oktober 2001. Sepuluh stesen pensampelan telah dipilih untuk mewakili kawasan-kawasan yang berlainan di kawasan kajian. Analisis nutrien terlarut dan klorofil-a dijalankan berdasarkan kaedah kolorimetrik manakala parameter fizikal diukur secara in situ. Hasil kajian menunjukkan bahawa pH mempunyai nilai antara 5.15-8.03, oksigen terlarut 4.89-6.85 mg/L, permintaan oksigen biokimia 0.04-1.80 mg/L dan jumlah pepejal terampai 1.3-19.7 mg/L. Kepekatan ortofosfat, jumlah fosfat terlarut, nitrat, ammonia, jumlah nitrogen terlarut dan klorofil-a adalah masing-Âmasing dalam julat 0.19-2.85 Î¼g P/L, 1.06-25.81 Î¼g P/L, 1.48-89.66 Î¼g N/L, 6.0-125.7 Î¼g N/L, 122.50-432.34 Î¼g N/L dan 0.03-4.32 mg/L. Disamping itu, keputusan yang didapati turut mencadangkan kemungkinan wujudnya hubungan antara kepelbagaian aktiviti guna tanah dan kemerosotan kualiti air di kawasan tanal: bencah].
Synthesis of dichlorprop-Zn/Al-hydrotalcite nanohybrid and its controlled release property

Mohd Zobir Hussein, Norhayati Hashim, Zulkarnain Zainal, Asmah Yahaya

Sains Malaysiana, 2011;40:1179-1186.

New phase-pure nanohybrids of dichlorprop[2(2,4-dichlorophenoxy)propionate]-intercalated Zn/Al-LDH were successfully prepared using either co-precipitation or ion exchange methods. The basal spacing expansion from 8.9 Å in the layered double hydroxide (LDH) to 18.7 and 21.7 Å of the nanohybrids was observed. This together with FTIR, DTG/TGA and compositional studies show that dichlorprop was successfully intercalated into the Zn/Al-layered double hydroxides interlayer. Release study of dichlorprop showed that it is dependent on the concentration of the incoming ionic species and governed by the pseudo-second order kinetic. This study suggests that the layered double hydroxide might be used as a matrix for controlled release formulation for a herbicide, dichlorprop and the release of the herbicide can be tuned using parameters such as method of synthesis and the concentration of the incoming ionic species to be ion exchange with. This is towards new generation of agrochemicals which are safer as well as user- and environmentally-friendly.
Fulltext Wonders of halal and balanced, diet’ instructions

Norhaslinda, R., Adzim, M. K. R., Norhayati, A. H.

Asian Journal of Medicine and Biomedicine, 2018;1(1):23-27.
MyJurnal

Food defined as material that can be brought into the body of a human, animal or plant sources for
upholding the balance of life and it includes rice, vegetables, bread and others. However, in Islam, its
emphasized more on clean, harmless food and also with a code known as Halal diet. Halal is a term from
the Quran which means permissible or lawful. In Islam, known special regulations in the slaughter of
animals to be Halal diet include with saying the name of Allah the Almighty and make an incision to cut
the lifeblood of the animal's neck, letting the action veins and organs intact. In contrast, Haram means 'not
allowed' or 'forbidden' in Islam. Among the Haram foods as mentioned in the Qur'an and the Sunnah, it
includes carrion, blood, dogs, pigs, and alcohol.
The evaluation of spatial variation of water quality in Sungai Setiu Basin, Terengganu

Izyan Munirah M. Zaideen, Suhaimi Suratman, Norhayati Mohd Tahir

Sains Malaysiana, 2017;46:1513-1520.

This study investigates the spatial variation of water quality parameters in Sungai Setiu Basin at ten different locations from March 2010 to February 2011. The water quality was assessed using the Water Quality Index by Malaysian Department of Environment (DOE-WQI) and classified according to the Malaysia Interim National Water Quality Standard (INWQS). Six water quality parameters embedded in the DOE-WQI were dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), pH, ammoniacal nitrogen (AN) and total suspended solid (TSS). In addition, this study also examined the changes in water quality over the past 10 years by comparing the present water quality to the previous works. The overall mean WQI value obtained was 84.0 which indicate that the Sungai Setiu basin is in clean condition and all measured water quality parameters gave value within the permissible limits of the INWQS classification except for pH which fall in Class III. It can be concluded that water quality in Sungai Setiu does not varies greatly over a decade. Hence continuous monitoring is needed to improve the water quality and minimize water pollution.
Seasonal variability and fractionation of p-based nutrients in Setiu River Basin, Terengganu, Malaysia

Hee YY, Suhaimi Suratman, Norhayati Mohd Tahir, Timothy Jickells

Sains Malaysiana, 2018;47:883-891.

A seasonal study of phosphorus (P)-based nutrients was carried out in Sungai Setiu basin which is located in the southern
region of the South China Sea (Malaysia) from July 2010 until June 2011. Parameters measured were dissolved inorganic
P (DIP), dissolved organic P (DOP) and total particulate P (TPP). In addition, DOP concentration was size fractionated
into high molecular weight (HMW, 0.7 µm-100 kDa), middle MW (MMW, 100-30 kDa) and low MW (LMW, <30 kDa). The
results show that the mean concentration of P-based nutrients ranged between 3.2-7.0 µg/L P for DIP, 5.6-12.1 µg/L P
for DOP and 9.2-119.4 µg/L P for TPP. Higher mean concentrations of P were recorded at urban and agricultural areas.
In addition, the distribution of P was affected by season as higher mean concentrations of P were observed during the
north-east monsoon due to the surface runoff of nutrients during this heavy raining season. The fractionation study of
DOP further revealed that HMW fraction was abundant in Sungai Setiu, making up approximately 60% of the total DOP.
This high percentage of HMW DOP was recorded at stations in the vicinity of agriculture area and towns suggesting
an important contribution from anthropogenic activities. The LMW DOP fraction was not significantly associated with
chlorophyll-a, suggesting that the phytoplankton might not be the predominant contributor for LMW fraction in this river.
We suggest that these organic nutrient inputs should be monitored as part of the management of the aquatic system.
Fulltext Improvement process of partially cooked corn grit (PCCG) preparation

Sari, A. R., Rahman, R.A., Shukri, R., Norhayati, H.

International Food Research Journal, 2019;26(2):537-546.
MyJurnal

used to substitute rice, particularly in the central part of Java and Madura regions, Indonesia. However, there is limited information regarding the preparation of partially cooked corn grits (PCCG). The objective of the present work was therefore to compare the preparation of PCCG in terms of characteristics and time of preparation using optimised initial moisture content in the traditional process with optimised corn particle size, initial moisture content and processing temperature of the improved process. Water absorption index (WAI), water solubility index (WSI), yellowness index (YI), and resistant starch (RS) of dried PCCG, as well as textural properties of rehydrated PCCG, were compared between optimised PCCG prepared using traditional and improved processes to obtain the best PCCG. Results showed that the optimum initial moisture content to prepare PCCG by the traditional process was approximately 40%. The optimum conditions to prepare PCCG by the improved process were 300 μm corn particle size, 52.33% initial moisture content and 123.67°C processing temperature. PCCG prepared using the improved process had higher values of YI (99.51) and RS (3.65 g/100 g) but lower WAI value (3.74) than YI (95.78), RS (1.96 g/100 g) and WAI (3.96) of PCCG prepared using the traditional process. The textural properties of rehydrated PCCG, except for adhesiveness and cohesiveness, prepared using the improved process were not different from those of PCCG prepared using the traditional process. The improved process also had a shorter preparation time of PCCG, which was 4-6 h as compared to normally 3-4 d in the traditional process. Therefore, a more rapid process with more consistent qualities for preparing PCCG will be of benefit to the target population.
Fulltext Traditional and complementary treatments among Malay, Chinese and Indian chronic diseases: a systematic review

Salihah Yusoff, Siti Aishah Hassan, Wan Norhayati Wan Othman

Malaysian Journal of Medicine and Health Sciences, 2019;15(101):178-183.
MyJurnal

Although the modern medicine has progressed for a long time, there are empirical studies shows the effectiveness of traditional and complementary treatments (TCT) in curing chronic diseases. In Malaysia, TCT is often related to the use of herbs and meditation that vary according to ethnicity. Each ethnic group has its own beliefs system in curing diseases. This study mainly aims to provide an overview on the perceptions of the effectiveness TCT in curing chronic diseases. The authors used electronic database to select 10 journal articles according to inclusion and exclusion criteria. Findings show the highest statistic among Sabah natives and followed by Malay ethnic on believing in the effectiveness of TCT. Price and encouragement from family and friends are the main influencing factors of taking TCT. We suggest that counsellors need to be aware of the TCT practices on particular culture in order to increase respect and trust in the helping relationships.
Breast imaging using electrical impedance tomography: correlation of quantitative assessment with visual interpretation

Zain NM, Chelliah KK

Asian Pac J Cancer Prev, 2014;15(3):1327-31.
PMID: 24606460

BACKGROUND: Electrical impedance tomography (EIT) is a new non-invasive, mobile screening method which does not use ionizing radiation to the human breast; allows conducting quantitative assessment of the images besides the visual interpretation. The aim of this study was to correlate the quantitative assessment and visual interpretation of breast electrical impedance tomographs and associated factors.
MATERIALS AND METHODS: One hundred and fifty mammography patients above 40 years and undergoing EIT were chosen using convenient sampling. Visual interpretation of the images was carried out by a radiologist with minimum of three years experience using the breast imaging - electrical impedance (BI-EIM) classification for detection of abnormalities. A set of thirty blinded EIT images were reinterpreted to determine the intra-rater reliability using kappa. Quantitative assessment was by comparison of the breast average electric conductivity with the norm and correlations with visual interpretation of the images were determined using Chi-square. One-way ANOVA was used to compare the mean electrical conductivity between groups and t-test was used for comparisons with pre-existing Caucasians statistics. Independent t-tests were applied to compare the mean electrical conductivity of women with factors like exogenous hormone use and family history of breast cancer.
RESULTS: The mean electrical conductivity of Malaysian women was significantly lower than that of Caucasians (p<0.05). Quantitative assessment of electrical impedance tomography was significantly related with visual interpretation of images of the breast (p<0.05).
CONCLUSIONS: Quantitative assessment of electrical impedance tomography images was significantly related with visual interpretation.
Fulltext The antibacterial activity of sodium hypochlorite and chlorhexidine against Enterococcus faecalis: A review on agar diffusion and direct contact methods

Luddin N, Ahmed HM

J Conserv Dent, 2013 Jan;16(1):9-16.
PMID: 23349569 DOI: 10.4103/0972-0707.105291

Complete debridement and disinfection of the root canal system are fundamental requirements for successful endodontic treatment. Despite the morphological challenges of the internal root anatomy, root canal irrigants play an important role in the optimization of the root canal preparation, which is essentially a chemo-mechanical procedure. Enterococcus faecalis is one of the most resistant microorganisms that dominants the microbial ecosystem of persistent periradicular lesions in retreatment cases. For that reason, many in vitro and in vivo studies evaluated and compared the antibacterial activity of sodium hypochlorite and chlorhexidine at varying concentrations using different experimental models against this microorganism. However, many controversies with regard to the ideal irrigant and concentration do in fact exist. Hence, this review aims to discuss the antibacterial activity of these two main root canal irrigants against Enterococcus faecalis using the agar diffusion and direct contact methods and the possible modulating factors responsible for inconsistent findings among different studies. In addition, the disinfection potential of both chemical agents on gutta percha and Resilon cones are also discussed. The source of this review was conducted through an electronic literature search using PubMed database from December 1997 until December 2011, which analyze the related laboratory investigations of both irrigants, published in major endodontic journals.
Fulltext Some risk factors of Ascaris and Trichuris infection in Malaysian aborigine (Orang Asli) children

Norhayati M, Oothuman P, Fatmah MS

Med J Malaysia, 1998 Dec;53(4):401-7.
PMID: 10971984

A study on risk factors of soil-transmitted helminths was conducted in a highly endemic area. In all 205 children (95 boys and 110 girls) participated in this study. The overall prevalences of Ascaris, Trichuris and hookworm infection were 62.5%, 91.7% and 28.8% respectively. Only 22.4% of the children had a single infection either by Ascaris or Trichuris; 69.3% had mixed infection and the most prevalent of mixed infection was a combination of Ascaris and Trichuris. Logistic regression analysis confirmed that low level mother's education was a risk factor for moderate and severe infection of Ascaris and age < or = 6-year-old was a protective factor. In Trichuris infection logistic regression analysis confirmed that usage of well-water and age < or = 6-year-old were the risk factors. Logistic regression analysis on worm scores confirmed that usage of well-water and non-usage of toilets were the risk factors from getting severe worm scores and age < or = 6-year-old was a protective factor. Our finding suggest that socio-behavioural (related to mother's education), demographic (children age) and environmental-factors (usage of well-water and non-usage of toilets) are the elements to be considered in the design of long term soil-transmitted helminths (STH) control in an endemic areas.
Fulltext Prevalence and some risk factors of Giardia duodenalis infection in a rural community in Malaysia

Norhayati M, Penggabean M, Oothuman P, Fatmah MS

Southeast Asian J. Trop. Med. Public Health, 1998 Dec;29(4):735-8.
PMID: 10772555

A study on prevalence and risk factors of Giardia duodenalis infection was conducted in rural communities of Malaysia. A total of 917 individuals between 2-70 years old (431 males and 486 females), participated in this study. The overall prevalence of G. duodenalis infection was 19.2%. The prevalence was significantly different between different age groups, but not genders. Our study indicated that age < or = 12 years old and the presence of family members infected with G. duodenalis were the risk factors of infection. Person-to-person contact within the family members was the possible mode of transmission. Health education on personal hygiene, together with the treatment of the infected people, may help in reducing and controlling this infection in these communities.
Fulltext Comparison of conventional versus real-time PCR detection of Brugia malayi DNA from dried blood spots from school children in a low endemic area

Rahmah N, Nurulhasanah O, Norhayati S, Zulkarnain I, Norizan M

Trop Biomed, 2010 Apr;27(1):54-9.
PMID: 20562814 MyJurnal

Microscopic detection of active phase of lymphatic filariasis is indicated by the presence of microfilaria in whole blood. This method is not sensitive and requires relatively large amount of blood sample. PCR allows very sensitive detection of the parasite DNA using a smaller amount of blood; and the use of dried blood spots facilitates sample transportation. Nevertheless, limited studies have been reported on PCR using dried blood spot for detection of Brugia malayi. In this study, we investigated the effects of concentrating whole blood genomic DNA sample and the amplification methods [conventional PCR (C-PCR) and real-time PCR] on the detection of B. malayi DNA from dried blood spots from a very low endemic area in Malaysia. Both C-PCR and real-time PCR detected 2 out of 18 (11%) samples as positive from non-concentrated genomic DNA preparations. After the DNA samples were pooled and concentrated, both C-PCR and realtime PCR detected B. malayi DNA amplifications in 7 out of 18 (39%) samples. However one sample which showed faint band in C-PCR was detected as highly positive in real-time PCR. In conclusion, both C-PCR and real-time PCR using dried blood spots from a low endemic area demonstrated equal sensitivity for detection of B. malayi DNA.
Fulltext Silver nanostar films for surface-enhanced Raman spectroscopy (SERS) of the pesticide imidacloprid

Abu Bakar N, Shapter JG

Heliyon, 2023 Mar;9(3):e14686.
PMID: 36994401 DOI: 10.1016/j.heliyon.2023.e14686

Strategies for synthetic control of anisotropic metal nanostructures have grown in recent years in part due to their great potential for application as surface-enhanced Raman scattering (SERS) sensing substrates. It has been shown that SERS using silver substrates is a powerful tool for identification and qualification of trace chemical analysis on the basis of their unique molecular vibrations. In this work, we synthesized star-shaped silver nanostructures and fabricated SERS substrates to use the SERS enhancement of the Raman signal to detect neonicotinoid pesticides. These silver nanostar substrates were prepared by assembling the nanostar particles on a glass substrate surface using a self-assembly technique with various layers of silver nanostars film. The silver nanostar distribution on the solid substrate surface was found to have good reproducibility, reusability and were a stable SERS substrate giving SERS enhancements for pesticide detection at concentrations as low as 10-6 mg/ml. The distribution of these silver nanostars on the surface allowed excellent reproducibility of the detection with a low relative standard derivation (RSD) of SERS intensity of 8%. This work potentially builds a platform for an ultrasensitive detector where samples can be probed with little to no pre-processing and a range of pollutants can be detected at very low levels.
Fulltext Colorectal cancer screening practices of primary care providers: results of a national survey in Malaysia

Norwati D, Harmy MY, Norhayati MN, Amry AR

Asian Pac J Cancer Prev, 2014;15(6):2901-4.
PMID: 24761922

The incidence of colorectal cancer has been increasing in many Asian countries including Malaysia during the past few decades. A physician recommendation has been shown to be a major factor that motivates patients to undergo screening. The present study objectives were to describe the practice of colorectal cancer screening by primary care providers in Malaysia and to determine the barriers for not following recommendations. In this cross sectional study involving 132 primary care providers from 44 Primary Care clinics in West Malaysia, self-administered questionnaires which consisted of demographic data, qualification, background on the primary care clinic, practices on colorectal cancer screening and barriers to colorectal cancer screening were distributed. A total of 116 primary care providers responded making a response rate of 87.9%. About 21% recommended faecal occult blood test (FOBT) in more than 50% of their patients who were eligible. The most common barrier was "unavailability of the test". The two most common patient factors are "patient in a hurry" and "poor patient awareness". This study indicates that colorectal cancer preventive activities among primary care providers are still poor in Malaysia. This may be related to the low availability of the test in the primary care setting and poor awareness and understanding of the importance of colorectal cancer screening among patients. More awareness programmes are required for the public. In addition, primary care providers should be kept abreast with the latest recommendations and policy makers need to improve colorectal cancer screening services in health clinics.
Fulltext Lens-induced glaucoma in a tertiary centre in northeast of Malaysia

Azhany Y, Norhayati A, Siti Raihan I, Liza Sharmini AT

Malays Fam Physician, 2014;9(2):48-52.
PMID: 25883765 MyJurnal

To determine the clinical presentations, management and outcome of lens-induced glaucoma (LIG) in Hospital Universiti Sains Malaysia.
Fulltext Prevalence and factors influencing smoking amongst Malay primary school children in Tumpat, Kelantan

Norbanee TH, Norhayati MN, Norsa'adah B, Naing NN

Southeast Asian J. Trop. Med. Public Health, 2006 Jan;37(1):230-5.
PMID: 16771239

The aims of this study were to determine the prevalence, knowledge and factors that influence smoking in Malay primary school children in Tumpat, Kelantan. A cross-sectional study was conducted in February 2004 among primary school children in Tumpat District. Two hundred-twelve children in standard one to six were randomly selected from three rural schools. An interview that included information on history of ever smoking, knowledge related to smoking and health, and potential factors that could influence smoking was done. Twenty-five children had previously smoked, with a prevalence of 11.8% (95%CI=8.0, 17.0) and 8 were current smokers (3.8%, 95%CI=1.2, 6.4). More than half (64.6%) of the children had a good knowledge of smoking. However, only 105 (49.5%) of them knew that passive smokers have a higher risk of developing diseases. Of those who had ever smoked, 12 (36.6%) were influenced by peers and 17 (51.5%) had a self-desire to smoke. The earliest age to start smoking was at 6 years. Factors found to be significantly associated with smoking on multivariate analysis were increasing age (OR=2.8, 95%CI=1.6, 5.1), being boys (OR=5.8, 95%CI=2.0, 16.8), being at second school level (standard 4, 5, 6)(OR=7.8, 95%CI=1.3, 45.3) and having other family members (excluding father) who smoked (OR=2.8, 95%CI=1.2, 6.5). However, having a father who smoked and a good knowledge were not reported as influencing factors.
Fulltext Severe maternal morbidity and near misses in tertiary hospitals, Kelantan, Malaysia: a cross-sectional study

Norhayati MN, Nik Hazlina NH, Sulaiman Z, Azman MY

BMC Public Health, 2016;16(1):229.
PMID: 26944047 DOI: 10.1186/s12889-016-2895-2

Severe maternal conditions have increasingly been used as alternative measurements of the quality of maternal care and as alternative strategies to reduce maternal mortality. We aimed to study severe maternal morbidity and maternal near miss among women in two tertiary hospitals in Kota Bharu, Kelantan, Malaysia.
Fulltext Functional status of women with and without severe maternal morbidity: A prospective cohort study

Norhayati MN, Nik Hazlina NH, Aniza AA

Women Birth, 2016 Oct;29(5):443-449.
PMID: 26972285 DOI: 10.1016/j.wombi.2016.02.002

Little is known regarding the impact on maternal functional status in women who have survived severe obstetric complications.
Psychometric properties of the revised Malay version Medical Outcome Study Social Support Survey using confirmatory factor analysis among postpartum mothers

Norhayati MN, Aniza AA, Nik Hazlina NH, Azman MY

Asia Pac Psychiatry, 2015 Dec;7(4):398-405.
PMID: 25808643 DOI: 10.1111/appy.12184

Social support is an essential component for the physical and emotional well-being of postpartum mothers. The objective of this study is to determine the psychometric properties of the revised Malay version Medical Outcome Study (MOS) Social Support Survey using a confirmatory validity approach.
Premature ejaculation and its associated factors among men attending a primary healthcare clinic in Kelantan, Malaysia

Ahmad Zamree MR, Shaiful Bahari I, Faridah MZ, Norhayati MN

J Taibah Univ Med Sci, 2018 Apr;13(2):173-179.
PMID: 31435320 DOI: 10.1016/j.jtumed.2017.10.001

Objectives: This study aimed to determine the prevalence of premature ejaculation and its associated factors among men attending a primary healthcare clinic in Kota Bharu, Kelantan, Malaysia.

Methods: A cross-sectional study was conducted on 18- to 60-year-old sexually active men during at least the past 6 months. Patients with unstable psychiatric illnesses, mental retardation, and illiteracy were excluded. A questionnaire on sociodemographic factors, Malay version Premature Ejaculation Diagnostic Tool, and Malay version International Index Erectile Function-5 were distributed. Premature ejaculation was defined as a Premature Ejaculation Diagnostic Tool score of 9 and above. Descriptive analysis and simple and multiple logistic regression analyses were performed using SPSS version 22.

Results: A total of 294 of 313 eligible men responded, with a response rate of 93.9%. The prevalence of premature ejaculation was 21.4% (n = 63). The multiple logistic regression analysis showed that mild [adj. OR (95% CI): 5.6 (1.89, 16.91); P = 0.002], mild-moderate [adj. OR (95% CI): 8.2 (2.72, 24.46); P

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