Browse publications by year: 2007

  1. Adeeb, N., Nur Azurah, A.G., Ong, F.B., Seri, S.S., Shamsuddin, K., Noor Aini, M.Y.
    Medicine & Health, 2007;2(1):66-79.
    MyJurnal
    Cancers of the ovary and corpus uteri afflict 5% and 3.6% Malaysian women respectively. Ovarian cancer (OC) remained the deadliest gynaecological malignancy in perimenopausal women mainly due to the lack of symptoms until the disease had spread. Ultrasonography could provide a preliminary screening allowing the clinician to tailor subsequent management and counselling for these women.  To support the basis for selective screening, a study on 517 urban disease free women aged 45 years and above, uterus-intact, non-users of HRT was undertaken. This study presented normograms of ovary, uterus and endometrium derived from entry ultrasound assessment. The sample comprised of 58.0% premenopaused and 42.0% postmenopaused women with an average age of 51.27±5.35 years old. Over two thirds were Chinese followed by Malays and Indians. The findings indicated that the average uterine size and endometrial thickness (ET) was 7.21±1.67x4.36±1.30cm and 6.36±3.73mm respectively. Premenopausal women had larger uterus compared to those postmenopaused (p
    MeSH terms: Counseling; Endometrium; Female; Humans; Ovarian Neoplasms; Uterine Diseases; Perimenopause
  2. Nurismah, M.I., Sharifah, N.A., Usama, A.E., Rohaizak, M., Naqiyah, I., Jasmi, A.
    Medicine & Health, 2007;2(1):58-65.
    MyJurnal
    Thyroid nodules are common but thyroid malignancies are not. Fine needle aspiration (FNA) cytology is a diagnostic tool used to screen patients with thyroid nodules who require surgery. We study the diagnostic accuracy of FNA as the initial diagnostic modality in the clinical assessment of thyroid nodules. Between January 1995 until December 2000, 2131 FNA of thyroid nodules were performed. Four hundred and forty-one (20.7%) of these were unsatisfactory and 1690 (79.3%) cases were satisfactory for cytological evaluation. Histopathological diagnosis were available for 361 cases. Cyto-histopathological correlation was carried out  for these cases. Our results showed a diagnostic accuracy of 96.2% with sensitivity and specificity rates of 87.7% and 98.4% res- pectively. Our positive predictive value is  93.4% and our negative  predictive value is 96.8%.  From this study, we conclude that fine needle aspiration is an important initial screening diagnostic tool for the investigation of thyroid nodules.           
    MeSH terms: Cytodiagnosis; Humans; Sensitivity and Specificity; Thyroid Neoplasms; Thyroid Nodule; Biopsy, Fine-Needle
  3. Sidi H, Wan Puteh SE, Midin M, Abdullah N
    Medicine & Health, 2007;2(1):48-57.
    MyJurnal
    The aim of the study was to compare sexual functioning among Malaysian women in a primary care setting between those with a low and high frequency sexual intercourse. Across-sectional study on 230 married Malaysian women in a primary-care setting was conducted at the Bandar Tun Razak Clinic, Cheras. A validated Malay version of Female Sexual Function Index questionnaire (MVFSFI) was used to assess the sexual functioning profiles among women with low and high sexual activity.  The percentage of women who had sexual intercourse 3-4 times a week, 1-2 times a week and < 1-2 times a month were 13.4%, 44.3 % and 42.4 % respectively. Women with a low frequency of sexual intercourse (Low SI) tended to suffer from more sexual dysfunction, (χ²=28.98, p < 0.001) compared to those with a high frequency of sexual intercourse (High SI) group. Women who were less sexually active (having low frequency intercourse, ie. ≤ 1 – 2 times per week) were found to be less sexually aroused (χ²= 25.9, p< 0.001), less orgasmic (χ²=19.8, p< 0.001), less lubricated during sexual activity (χ²=11.1, p< 0.001), complain of sexual pain (χ²=4.3, p = 0.033) and feels less satisfied sexually (χ²=12.6, p< 0.001).The problem of female sexual dysfunction (FSD) in the Malaysian primary care population with low sexual activity needs to be addressed.
    MeSH terms: Adult; Ambulatory Care Facilities; China/ethnology; Coitus; Cross-Sectional Studies; Female; Humans; India/ethnology; Malaysia; Malaysia/ethnology; Male; Marriage; Orgasm; Pain; Primary Health Care; Surveys and Questionnaires; Sexual Behavior
  4. Liliwati I, Lee VKM, Omar K
    Medicine & Health, 2007;2(1):42-47.
    MyJurnal
    The objective of this study is to determine the prevalence of dysmenorrhoea, its associated factors and its effects on school activities among adolescent girls in a secondary school in a rural district of Selangor, Malaysia. This is a cross-sectional study conducted in a public secondary school. A stratified random sampling of 300 female students (12 to 17 years old) from Form one to Form five classes were selected. A self-administered questionnaire consisting of 20-items was used to collect sociodemographic and menstrual data. Pain intensity for dysmenorrhoea was measured by numerical rating scale. The prevalence of dysmenorrhoea was 62.3%. It was significantly higher in the middle adolescence (15 to 17 years old) age group (p=0.003), girls with regular menstrual cycle (p=0.007) and a positive family history (p
    MeSH terms: Adolescent; Cross-Sectional Studies; Dysmenorrhea; Female; Humans; Malaysia; Menstrual Cycle; Surveys and Questionnaires; Schools; Students; Prevalence
  5. Raja Lexshimi RG, Ho SE, Hamidah H, Rohani M, Syed Zulkifli SZ
    Medicine & Health, 2007;2(1):34-41.
    MyJurnal
    Pregnancy is perceived by many pregnant mothers as a period of happiness in anticipation of motherhood. Not all pregnant mothers experience cheerfulness as some may experience a high anxiety and depression level for unknown reasons. The purpose of this study was to determine the level of anxiety and depression among high risk pregnant women and the factors that contribute to their level of anxiety and depression. A descriptive cross-sectional study was conducted on 38 high risk mothers whose stay in hospital exceeded more than three days in the obstetric ward of Hospital Universiti Kebangsaan Malaysia. A self assessment questionnaire “Hospital Anxiety Depression scale” was used to measure the level of anxiety and depression among high risk pregnant women. Of the 38 participants, 16 (42.1%) women experienced a mild level of anxiety and 22 (57.9%) experienced a severe level of anxiety. Seventeen (44.7%) women was classified as having mild depression and 21 (55.3%) severe depression. The factors contributing to the level of anxiety and depression, include those related with “lack of information on disease”, “family matters” and “finance”. High risk pregnant women in this study experienced a significant level of anxiety and depression during their stay in hospital. It is therefore important for nurses and doctors to be aware and sensitive to the influencing factors that cause anxiety and depression as to enable high risk pregnant mothers to enjoy their pregnancy and childbirth.
    Study site: Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM), Kuala Lumpur, Malaysia
    MeSH terms: Anxiety; Anxiety Disorders; Cross-Sectional Studies; Depression; Depressive Disorder, Major; Female; Happiness; Hospitals, University; Humans; Inpatients; Malaysia; Mothers; Pregnancy; Surveys and Questionnaires; Self-Assessment; Prevalence; Parturition
  6. Ho, Siew Eng, Syed Zulkifli Syed, Lexshimi RG, Raja, Hamidah Hassan, Letchmi, Santhna, Teoh, Koi Hong, et al.
    Medicine & Health, 2007;2(1):26-33.
    MyJurnal
    Percutaneous coronary intervention (PCI) is an invasive diagnostic investigation that may result in high level of anxiety and “fear of the unknown” among cardiac patients. An increment in anxiety among PCI patients will augment the level of stress and this extreme stress level will then aggravate depression. The objective of this study was to determine the incidence of anxiety and depression before and after PCI. This was a cross-sectional descriptive study. The Hospital Anxiety and Depression Scale (HADS) was used. It measured two elements, namely, the anxiety and depression levels of patients before and after PCI. This study was conducted in the cardiology wards Anggerik and Dahlia, and Day Care of the National Heart Institute, from January to February 2006.  A sample of 61 patients before and after PCI who fulfilled the inclusion criteria were recruited in this study. Of these, 40 and 38 patients before and after PCI respectively, had low anxiety levels; while, 47 and 46 patients before and after PCI respectively, had low depression levels. Anxiety and depression levels before and after PCI were not significantly correlated to socio demographic status. However, a significant correlation (p
    MeSH terms: Anxiety; Anxiety Disorders; Cross-Sectional Studies; Day Care, Medical; Depression; Depressive Disorder; Fear; Humans; Incidence; Dahlia; Percutaneous Coronary Intervention
  7. Cheek, Ken Lim, So, Har Ton
    Medicine & Health, 2007;2(1):1-25.
    MyJurnal
    Infection by hepatitis B virus (HBV) is a major global health-care problem. HBV is an accepted factor in the elevated risks for liver disease such as cirrhosis and development of hepatocellular carcinoma. This problem is particularly prevalent in the Asia-Pacific region which includes Malaysia. During infection, the hepatitis B e antigen (HBeAg) is produced in the hosts. This antigen is an important serological marker for diagnosing chronic hepatitis B. Seroconversion to anti-body (anti-HBe) corresponds to the improvement of disease prognosis. However, certain mutations such as the core promoter dual mutations (A1762G1764→T1762A1764), the codon 15 variants (C1858/ T1858) and the precore stop codon mutations (TGG→TAG) can affect the HBeAg expression. This has diagnostic and clinical implications. Besides that, the HBV can be grouped into eight genotypes (A to H). Moreover, genotypic subtypes and recombinants have been observed as well. Studies have observed that these can differ in their affiliations with the mutations above as well as with disease prognosis.
    MeSH terms: Seroconversion; Asia; Genotype; Hepatitis B e Antigens; Hepatitis B virus; Carcinoma, Hepatocellular; Liver Cirrhosis; Liver Neoplasms; Malaysia; Mutation; Prognosis; Global Health; Codon, Terminator; Hepatitis B, Chronic
  8. Gani, A.N., Megat Shiraz, M.A.R., Siti Aishah, M.A., Norazizah, M., Mozita, A., Sharifah, N.A.
    Medicine & Health, 2007;2(2):164-168.
    MyJurnal
    Pleomorphic adenoma (PA) typically presents as a benign slow growing, painless neoplasm of the parotid gland. PA arising from the submandibular gland in the paediatric age group is rare. Surgical excision is the treatment of choice. A case of PA in an 8-year-old Malay girl is presented. Clinically she presented with a painless right submandibular mass measuring 2x2cm. A diagnosis of Pleomorphic adenoma was made on Fine Needle Aspiration Cytology (FNAC). She underwent submandibulectomy uneventfully. Postoperatively after two years follow up, she is asymptomatic.
    MeSH terms: Child; Cytodiagnosis; Female; Follow-Up Studies; Humans; Adenoma, Pleomorphic; Parotid Gland; Parotid Neoplasms; Submandibular Gland; Submandibular Gland Neoplasms; Biopsy, Fine-Needle
  9. Gani, A.N., Abdullah, A., Hazim, M.Y.S., Rozman, Z.
    Medicine & Health, 2007;2(2):158-163.
    MyJurnal
    Parapharyngeal abscess is a serious medical condition that may lead to life-threatening complications. Its incidence has dramatically decreased since the advent of antibiotics. We report two cases of parapharyngeal abscesses in immunocompromised patients. We believe that early diagnosis, broad-spectrum antibiotics, surgery and pus drainage can prevent serious complications.
    MeSH terms: Anti-Bacterial Agents; Drainage; Humans; Pharyngeal Diseases; Incidence; Immunocompromised Host; Retropharyngeal Abscess; Early Diagnosis
  10. Anisah, O., Osman, C.B.
    Medicine & Health, 2007;2(2):154-157.
    MyJurnal
    The traditional physical and cosmetic-centered model without paying serious attention on the underlying psychosocial issues of care are ill suited to successful treatment outcome of obesity. The objective of this article is to report a case of a retired Malay army sergeant who presented with night eating syndrome (NES) with morbid obesity and dysthymia, and to discuss the psychobiological aspect of the case including to evaluate the effectiveness of the combination treatment of pharmacotherapy and cognitive behavior therapy along with diet counseling. The diagnosis was made by using the Structured Clinical Interview Diagnosis (SCID) for DSM-III-R diagnosis and the severity of depression was assessed by Hamilton Depressive Rating Scale. The patient’s body mass index was 45, He was found to have dysthymia and the Hamilton Depressive Rating Scale score was 13. We found that the combination of pharmacotherapy, cognitive behavior therapy and nutritional education with the help of the physician proved to be effective in treating morbid obesity with NES and Dysthymia.
    MeSH terms: Attention; Counseling; Depression; Depressive Disorder; Diet; Eating; Humans; Male; Obesity, Morbid; Cognitive Therapy; Body Mass Index; Treatment Outcome; Dysthymic Disorder; Diagnostic and Statistical Manual of Mental Disorders
  11. Lexshimi RG, Raja, Saadiah Tahir, Santhna, L.P., Md Nizam, J.
    Medicine & Health, 2007;2(2):146-153.
    MyJurnal
    The working environment of intensive care unit (ICU) nurses is a constant source of stress. Researchers have described ICU as a stressful environment because of the complex nature of patients’ health problems requiring an extensive use of very sophisticated technology. This study aimed to identify the prevalence of stress among staff nurses working in ICU, Hospital Universiti Kebangsaan Malaysia (HUKM), factors influencing stress and to explore the symptoms of stress experienced. This descriptive study was conducted on 67 staff nurses working in ICU, HUKM. Data was collected using self-administered questionnaires. The questionnaires included sections on socio-demographic data, factors influencing stress and symptoms of stress experienced. Data was analyzed using frequency and percentage. The Chi square test was used to examine the relationship between socio-demographic data and factors influencing stress. Findings indicated that stress symptoms were experienced by 100 per cent (n =67) of staff nurses Knowledge, working experience, critically ill patients, and environmental factors were one of  the many  factors contributing to the stress experienced by the ICU nurses in HUKM. Nurses working in ICU, HUKM are found to have a high level of stress. Recommendations like encouraging ICU nurses to take up post basic ICU courses and increasing the nurses quota can reduce the prevalence of stress among ICU nurses. Hospital management has an important role to play in reducing the stress levels of nurses working  in  ICU as stress has an effect on job performance and quality of nursing care.
    MeSH terms: Work Performance; Humans; Intensive Care Units; Malaysia; Nurses; Surveys and Questionnaires; Research Personnel; Prevalence; Chi-Square Distribution; Critical Illness; Workplace
  12. Tan, KC, Chuah, CY, Fong, KY, Phang, SL, Nor Azlin, M.I.
    Medicine & Health, 2007;2(2):139-145.
    MyJurnal
    Placenta praevia  is a known obstetric condition  that causes complications  to mother and fetus. This study was done to evaluate the knowledge of placenta praevia amongst the obstetric patients. A cross sectional study was carried out in Hospital Ipoh, Perak among 323 antenatal and postnatal patients. Socio-demographic parameters (ie age, race, parity, occupation, educational  level) and history of placenta praevia were studied  in relation to level of knowledge and attitude towards placenta praevia. Twenty (6.2%) from 323 women had current or past history of placenta praevia. Three had history of placenta praevia while 17 had current placenta praevia with prevalence of 5.3%. The mean score of knowledge achieved by patients was 11.8 which indicated overall poor knowledge. Occupation, level of education and history of placenta praevia were found to have a relationship with level of knowledge regarding placenta praevia in all obstetric patients. There was a significant relationship between attitude of patients with current and history of placenta praevia to level of knowledge regarding placenta praevia. (p=0.037,
    MeSH terms: Cross-Sectional Studies; Female; Fetus; Humans; Obstetric Labor Complications; Mothers; Occupations; Parity; Placenta Previa; Pregnancy; Prevalence
  13. Asma, A., Hazim, M.Y.S., Marina, M.B., Azizi, A.B., Suraya, A., Norlaili, M.T., et al.
    Medicine & Health, 2007;2(2):133-138.
    MyJurnal
    Proper management of chronic otitis media may reduce the incidence of otogenic brain abscess. The aim of this study was to describe the clinical profile, treatment and surgical outcome of patients presenting with otogenic brain abscess. The medical record of patients in Universiti Kebangsaan Malaysia Medical Centre (UKMMC) with otogenic brain abscess were retrospectively analyzed from January 1997-January 2006. Within this eriod we had approximately 10,800 of follow up cases of chronic otitis media  (COM) in our clinic. Ten patients  (2  females, 8 males) with an average age of 42  (age  range 11  to 69 years) were identified with otogenic brain abscess and included in this study. The mean follow-up period was 14 months.  All patients had cholesteatoma. All patients had a history of chronic ear discharge, headache, otalgia and fever. Six of the 10 patients had cerebellar abscess and 4 had temporal lobe abscess.  Cerebellar signs were present in 3 patients All  the  patients  were  treated  with  broad-spectrum  antibiotics. In 5 patients, mastoid exploration was the primary surgical treatment and the brain abscesses were treated conservatively. In the other 5 patients, craniotomy and drainage were performed followed by mastoid exploration when their neurological conditions had stabilized. All our patients had uneventful recovery. There were no permanent cerebellar signs during the follow up and no mortality reported in our series. In this series we demonstrated that early diagnosis and proper treatment of otogenic abscess leads to good neurological outcome.
    MeSH terms: Anti-Bacterial Agents; Brain Abscess; Cerebellar Diseases; Cholesteatoma; Craniotomy; Drainage; Earache; Female; Follow-Up Studies; Headache; Humans; Malaysia; Male; Mastoid; Medical Records; Otitis Media; Retrospective Studies; Temporal Lobe; Incidence; Early Diagnosis
  14. Tan, GC, Sharifah, N.A., Salwati, S., Hatta, A.Z., Shiran, M.S, Ng, Ho
    Medicine & Health, 2007;2(2):125-132.
    MyJurnal
    One of the most important cervical cancer risk factors is human papillomavirus (HPV) infection. The p53 gene is one of the most important targets of the HPV E6 gene. E6 protein has the ability to stimulate p53 degradation, inhibits several functions of wild-type p53 and it competes with its function including suppression of malignant growth. The aim of this study is to determine the differences in p53 expressions in pre-malignant and malignant cervical neoplasms. This is a retrospective study on 100 cases of cervical neoplasms. There were 21 cases of CIN 1, 8 cases of CIN 2, 25 cases of CIN 3, 36 cases of squamous cell carcinoma, 7 cases of adenocarcinoma and 3 cases of adenosquamouscarcinoma. All cases were evaluated by immunohistochemistry using p53 monoclonalantibody. Thirty six of the 54 pre-malignant cases (66.7%) were positive for p53 protein, n contrast to the malignant cases in which, 40 of the 46 cases (87.0%) were positive. he majority of CIN showed absent to focal staining (29/54, 53.7%). In contrast, 84.8% (39/46( of the invasive carcinoma showed regional to diffuse staining. The expression of p53 is greater in the malignant cervical neoplasms than the pre-malignant cervical lesions, suggesting that p53 overexpression is not an early phenomenon in the pathogenesis of cervical cancer. It is also shown to be slightly higher in percentage in CIN 2 and 3 when compared with CIN 1. However, a number of cases were p53 negative, suggesting that other factors may be involved and further HPV studies are indicated.
    MeSH terms: Adenocarcinoma; Carcinoma, Squamous Cell; Uterine Cervical Dysplasia; Uterine Cervical Neoplasms; DNA-Binding Proteins; Female; Humans; Immunohistochemistry; Oncogene Proteins, Viral; Retrospective Studies; Risk Factors; Staining and Labeling; Genes, p53; Cervical Intraepithelial Neoplasia
  15. Samsiah, M., Santhna, L.P., Hamidah, H., Ruth, P.R.D.
    Medicine & Health, 2007;2(2):117-124.
    MyJurnal
    Home Care Nursing Program (HCNP) at HUKM was started in 1998 and evaluation of the program was required. The objective of this study is to evaluate the effectiveness of HCNP on stroke rehabilitation at HUKM. A retrospective study using a matched pair design involving 69 stroke patients admitted to HUKM from August 1998 to December 2000 was carried out. The participants of this study were the HCNP group (n=35), and Non- HCNP (n=34). The matching was based on five criteria; age, sex, race, data of admission and severity of disability. The HCNP group was identified through data at the HCNP unit and their medical reports were traced. For the Non-HCNP group, the participants were identified based on criteria which were similar to that of the HCNP group. Based on the criteria identified, there was no significant difference between the two groups. The Activities of Daily Living was measured using the Modified Barthel Index twice; once on admission (based on record) and one post stroke. The t-test was applied to parametric data and non-parametric data; Chi-square was used to detect any significant relationships between the scores of the two groups. Results showed no significant difference (p=0.1990) in ADL on admission and ADL post stroke patients between the two groups.  However, there were significant difference (HCNP p=0.000 and Non-HCNP p=0.000) in ADL on admission and post stroke for stroke patients who sought alternative treatment compared to those who had not.
    MeSH terms: Activities of Daily Living; Disabled Persons; Home Care Services; Hospitalization; Humans; Retrospective Studies; Stroke; Continental Population Groups
  16. Ismail Mohd Saiboon, Noraliza Mohd Ariffin, Teodoro Javier Herbosa, Ahmad Khaldun Ismail, Nariman Singmamae, Shamsuriani Md Jamal, et al.
    Medicine & Health, 2007;2(2):110-116.
    MyJurnal
    Cardio-pulmonary Resuscitation (CPR) is important and should be mastered by House Officers (HO). House officers who have just completed their studies are assigned to acute medical and surgical wards. If a patient in the ward has a cardiac arrest (CA), these doctors are usually the first to attend.  Therefore an HO must be confident with CPR skills. They must be competent in performing CPR. The authors assessed 26 new HOs from Universiti Kebangsaan Malaysia Hospital (HUKM) with respect to their self-perception about CPR skills, confidence level in performing CPR and knowledge in performing CPR. Knowledge was assessed by a questionnaire. We found that 16 of 26 (61.5%) assessed themselves to have inadequate knowledge and 46.2% had no confidence in performing CPR. The mean score of the written test was 5.7 ± 1.8. Seven out of 26 (27.0%) HOs had incorrect hand placement position for CPR. Only 4 and 9 out of 26 HOs had their sternal paddle and cardiac apex paddle positions correctly placed respectively. In conclusion, knowledge, perception of skills and confidence levels of HOs on CPR are inadequate and need further assessment and improvement. Medical schools need to review their CPR curriculum in order to prepare HOs adequately to work in emergency situations.
    MeSH terms: Curriculum; Heart Arrest; Humans; Malaysia; Physicians; Surveys and Questionnaires; Schools, Medical; Self Concept; Cardiopulmonary Resuscitation
  17. Muhd Helmi Azmi, Karis Misiran
    Medicine & Health, 2007;2(2):103-109.
    MyJurnal
    This was a prospective randomized double blind controlled study to compare intubating conditions at 60 seconds with rocuronium 0.6 mg/kg by using three different induction techniques: propofol-placebo (PP), propofol-ephedrine (PE) and propofol-placebo-crystalloid (PC). Ninety patients were included and randomly allocated to receive one of the three combinations. The  patients  were  induced  using  fentanyl 2 µg/kg,  followed by propofol 2.5 mg/kg with normal saline as placebo (Group PP and Group PC) or ephedrine 70  µg/kg  (Group PE)  given  over  30  seconds. Subsequently, rocuronium 0.6 mg/kg was given over five seconds and endotracheal intubations were performed 60 seconds later. Intubating conditions were clinically acceptable in all patients except in four patients in PP group, who had poor intubating conditions. The proportion of excellent intubating conditions was significantly highest in Group PE (94%) followed by Group PC (81%) and lowest in Group PP (50%). In conclusion, induction with propofol-ephedrine and propofol-placebo-crystalloid combinations rovided significantly better intubating conditions than propofol alone, when rocuronium 0.6 mg/kg was used for intubation at 60 seconds.
    MeSH terms: Androstanols; Double-Blind Method; Ephedrine; Fentanyl; Humans; Intubation, Intratracheal; Isotonic Solutions; Prospective Studies; Propofol
  18. Adinata D, Wan Daud WM, Aroua MK
    Bioresour Technol, 2007 Jan;98(1):145-9.
    PMID: 16380249
    Palm shell was used to prepare activated carbon using potassium carbonate (K2CO3) as activating agent. The influence of carbonization temperatures (600-1000 degrees C) and impregnation ratios (0.5-2.0) of the prepared activated carbon on the pore development and yield were investigated. Results showed that in all cases, increasing the carbonization temperature and impregnation ratio, the yield decreased, while the adsorption of CO2 increased, progressively. Specific surface area of activated carbon was maximum about 1170 m2/g at 800 degrees C with activation duration of 2 h and at an impregnation ratio of 1.0.
    MeSH terms: Adsorption; Carbon/chemistry*; Carbon Dioxide/chemistry; Carbonates/chemistry*; Potassium/chemistry*; Arecaceae/chemistry*
  19. Aziz HA, Alias S, Adlan MN, Faridah, Asaari AH, Zahari MS
    Bioresour Technol, 2007 Jan;98(1):218-20.
    PMID: 16386895
    A study was conducted to investigate the efficiency of coagulation and flocculation processes for removing colour from a semi-aerobic landfill leachate from one of the landfill sites in Malaysia. Four types of coagulant namely aluminium (III) sulphate (alum), ferric (III) chloride, ferrous (II) sulphate and ferric (III) sulphate were studied using standard jar test apparatus. Results indicated that ferric chloride was superior to the other coagulants and removed 94% of colour at an optimum dose of 800 mg/l at pH 4. The effect of coagulant dosages on colour removal showed similar trend as for COD, turbidity and suspended solids. This suggested that colour in landfill leachate was mainly contributed by organic matters with some insoluble forms that exhibited turbidity and suspended solids readings. The results from this study suggested that ferric chloride could be a viable coagulant in managing colour problems associated with landfill leachate.
    MeSH terms: Color; Flocculation; Hydrogen-Ion Concentration; Refuse Disposal/methods; Waste Disposal, Fluid/methods*; Water Pollutants, Chemical/chemistry*; Water Purification/methods*
  20. Chang YM, Perumal R, Keat PY, Kuehn DL
    Forensic Sci Int, 2007 Mar 22;167(1):70-6.
    PMID: 16457976
    We have analyzed 16 Y-STR loci (DYS456, DYS389I, DYS390, DYS389II, DYS458, DYS19, DYS385a/b, DYS393, DYS391, DYS439, DYS635 or Y-GATA C4, DYS392, Y-GATA H4, DYS437, DYS438 and DYS448) from the non-recombining region of the human Y-chromosome in 980 male individuals from three main ethnic populations in Malaysia (Malay, Chinese, Indian) using the AmpFlSTR((R)) Y-filertrade mark (Applied Biosystems, Foster City, CA). The observed 17-loci haplotypes and the individual allele frequencies for each locus were estimated, whilst the locus diversity, haplotype diversity and discrimination capacity were calculated in the three ethnic populations. Analysis of molecular variance indicated that 88.7% of the haplotypic variation is found within population and 11.3% is between populations (fixation index F(ST)=0.113, p=0.000). This study has revealed Y-chromosomes with null alleles at several Y-loci, namely DYS458, DYS392, DYS389I, DYS389II, DYS439, DYS448 and Y-GATA H4; and several occurrences of duplications at the highly polymorphic DYS385 loci. Some of these deleted loci were in regions of the Y(q) arm that have been implicated in the occurrence of male infertility.
    MeSH terms: Ethnic Groups/genetics*; Gene Frequency; Genetics, Population*; Haplotypes*; Humans; Malaysia; Male; Polymerase Chain Reaction; DNA Fingerprinting; Tandem Repeat Sequences*; Chromosomes, Human, Y*
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