Displaying publications 21 - 40 of 155 in total

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  1. Mohamad N, Badrin S, Wan Abdullah WNH
    Korean J Fam Med, 2018 Mar;39(2):126-129.
    PMID: 29629046 DOI: 10.4082/kjfm.2018.39.2.126
    Fixed cutaneous sporotrichosis is a differential diagnosis that can be considered in diabetic patients who present with a poorly healing ulcer. Although its prevalence is low, it can occur in patients with immunocompromised status. Here we report a case of a 70-year-old man with diabetes mellitus who presented with a 1-month history of an unhealed ulcer over the tip of his left middle finger. He experienced a cat bite over his left middle finger 1 month prior to the appearance of the lesion. A skin biopsy revealed the presence of Sporothrix schenckii. Oral itraconazole 200 mg twice daily was started empirically and the patient showed marked improvement in the skin lesion after 2 months of therapy.
  2. Jamaludin J, Nordin NM, Mohamad N, Etta KM
    Malays J Reprod Health, 1988 Jun;6(1):65-9.
    PMID: 12281593
    Subcutaneous body fat and Quetelet's Indices (QI) of 52, 18-29 year old normal female volunteers were determined. These body mass indices were then grouped according to the phase of each subject's menstrual cycle, early or late follicular and early or late luteal phase. The subcutaneous body fat is 27.07 +or- 1.0% in the early follicular but drops to 24.68 +or- 1.84% in the late follicular phase. The value then rises significantly higher than that in the late follicular phase to 30.14 +or- 1.15% (P0.02) in the early luteal drops to 27.17 +or- 0.55% towards the level of the early follicular phase (P0.05). Variations in the values of QI during each menstrual cycle exactly mirror those for subcutaneous body fat. The fall in the 2 body mass indices during the late follicular phase coincides somewhat with the established preovulatory LH and FSH surges as well as the high levels of estrogen of this period. On the other hand the significant rise in the 2 parameters during the early luteal phase coincides with the marked rise in the ratio of progesterone to estrogen. Clearly, increased levels of progesterone relative to estrogen appear to cause an increase in the body fat during each menstrual cycle. The implication of this finding for women on contraceptive pills which are predominantly progesterone and those whose normal menstrual cycle is "interrupted" at the early luteal phase by a successful fertilization raises very interesting questions with regards to prediction of ovulation.
  3. Loh SY, Zakaria R, Mohamad N
    Medeni Med J, 2023 Mar 28;38(1):45-53.
    PMID: 36974481 DOI: 10.4274/MMJ.galenos.2023.14478
    OBJECTIVE: Tuberculosis (TB) is an old disease and it has infected millions of people worldwide. Since it is a highly infectious disease, many people became TB contact due to prolonged exposure to a person with TB infection. This group of people is at a higher risk of getting latent and active TB infection, hence a vulnerable group for active TB screening. This study explored the factors that determined the attitude score, the level of knowledge, attitude, and stigma (KAS) regarding TB disease among TB contact.

    METHODS: This cross-sectional study used a validated KAS questionnaire, performed among 338 TB contacts from 5 health clinics in Kedah, Malaysia. The respondents were selected via convenience sampling. Simple and multiple linear regressions were used to analyze the data.

    RESULTS: The mean KAS scores of participants are 73.5% [standard deviation (SD)=17.06], 83.0% (SD=10.33), and 67.0% (SD=16.72), respectively. Higher income (p=0.001), better knowledge score (p<0.001), and higher stigma score (p=0.003) are the significant associated factors for the attitude score.

    CONCLUSIONS: This study revealed that most of the TB contacts have good knowledge and constructive attitude toward TB prevention and screening, but their level of stigma on TB is high. The implementation of TB education and intervention programs among TB contacts are required especially among low-income groups.

  4. Ismail MA, Norhayati MN, Mohamad N
    PeerJ, 2021;9:e11173.
    PMID: 33868820 DOI: 10.7717/peerj.11173
    BACKGROUND: This systematic review and meta-analysis aimed to determine the effectiveness of olive leaf extract on cardiometabolic profiles among prehypertensive and hypertensive groups.

    METHODOLOGY: The Cochrane central register of controlled trials, Medline (1966 to April week 1, 2020), Embase (1966 to April week 1, 2020) and trial registries for relevant randomized clinical trials were used. Published and unpublished randomized clinical trials were reviewed and evaluated. Random effects models were used to estimate the continuous outcomes and mean differences (MDs); both with 95% confidence intervals (CIs). The primary outcomes were changes in systolic and diastolic BP. The secondary outcomes were changes in lipid profile, glucose metabolism, inflammatory markers for CVD, kidney and liver functions safety parameters. We assessed the data for risk of bias, heterogeneity, sensitivity, reporting bias and quality of evidence.

    RESULTS: Five trials were included involving 325 patients aged 18-80 years. Two trials involved high-income countries and three trials involved moderate-income countries. The analysis performed was based on three comparisons. No significant changes were found between systolic or diastolic blood pressure (BP) for the first comparison, 1,000 mg per day for a combined formulation of olive leaf extract versus a placebo. The second comparison, 500 mg per day of olive leaf extract versus placebo or no treatment, showed a significant reduction in systolic BP over a period of at least 8 weeks of follow up (MD -5.78 mmHg, 95% CI [-10.27 to -1.30]) and no significant changes on diastolic BP. The third comparison, 1,000 mg per day of olive leaf extract versus placebo shows no significant difference but an almost similar reduction in systolic BP (-11.5 mmHg in olive leaf extract and -13.7 mmHg in placebo, MD 2.2 mmHg, 95% CI [-0.43-4.83]) and diastolic BP (-4.8 mmHg in olive leaf extract and -6.4 mmHg in placebo, MD 1.60 mmHg, 95% CI [-0.13-3.33]). For secondary outcomes, 1,000 mg per day of olive leaf extract versus captopril showed a reduction in LDL (MD -6.00 mg/dl, 95% CI [-11.5 to -0.50]). The 500 mg per day olive leaf extract versus placebo showed a reduction in inflammatory markers for CVD IL-6 (MD -6.83 ng/L, 95% CI [-13.15 to -0.51]), IL-8 (MD -8.24 ng/L, 95% CI [-16.00 to -0.48) and TNF-alpha (MD -7.40 ng/L, 95% CI [-13.23 to -1.57]).

    CONCLUSIONS: The results from this review suggest the reduction of systolic BP, LDL and inflammatory biomarkers, but it may not provide a robust conclusion regarding the effects of olive leaf extract on cardiometabolic profile due to the limited number of participants in the included trials.

    REVIEW REGISTRATIONS: PROSPERO CDR 42020181212.

  5. Aaqillah-Amr MA, Hidir A, Azra MN, Ahmad-Ideris AR, Abualreesh MH, Noordiyana MN, et al.
    Animals (Basel), 2021 Jun 12;11(6).
    PMID: 34204676 DOI: 10.3390/ani11061761
    The increasing market demand for decapods has led to a considerable interest in cultivating decapod species at a larger scale. Following the development of hatchery technologies, most research has focused on the development of formulated feeds for commercially farmed decapods once they enter the juvenile stages. The use of formulated feed for decapods at a commercial scale is still in the early stages. This is probably because of the unique feeding behavior that decapods possess: being robust, slow feeders and bottom dwellers, their feeding preferences change during the transition from pelagic larvae to benthic juveniles as their digestive systems develop and become more complex. The current practice of decapod aquaculture involves the provision of juveniles with food such as natural diet, live feed, and formulated feed. Knowledge of nutrient requirements enables diets to be better formulated. By manipulating the levels of proteins and lipids, a formulated feed can be expected to lead to optimal growth in decapods. At the same time, the pellet's physical characteristics are important factors to be considered upon formulating commercially farmed decapod feeds, considering the unique feeding behavior of the decapod. However, most published studies on decapod nutrition lack data on the physical characteristics of the feed types. Thus, it is difficult to establish a standard feed formulation that focuses on the physical pellet properties. Moreover, careful consideration must be given to the feeding behavior of species, as decapods are known as bottom feeders and are robust in terms of handling feed. Information on the pellet forms, diet composition, and unique feeding behaviors in commercially farmed decapods is gathered to suggest potential better formulated diets that can optimize growth and reproduction. Thus, the purpose of this review is to summarize the information that has been published to date and to come up with suggestions on ways to improve the feed formulation in decapods that comply with their feeding behavior and nutrient requirements. Further research is needed to explore the potential of the pelleted feed at the adult stage so the decapod can take full advantage of the nutrients present in the pellets.
  6. Shafiee MN, Mongan N, Seedhouse C, Chapman C, Deen S, Abu J, et al.
    Acta Obstet Gynecol Scand, 2017 May;96(5):556-562.
    PMID: 28176325 DOI: 10.1111/aogs.13106
    INTRODUCTION: Women with polycystic ovary syndrome have a three-fold higher risk of endometrial cancer. Insulin resistance and hyperlipidemia may be pertinent factors in the pathogenesis of both conditions. The aim of this study was to investigate endometrial sterol regulatory element binding protein-1 gene expression in polycystic ovary syndrome and endometrial cancer endometrium, and to correlate endometrial sterol regulatory element binding protein-1 gene expression with serum lipid profiles.

    MATERIAL AND METHODS: A cross-sectional study was performed at Nottingham University Hospital, UK. A total of 102 women (polycystic ovary syndrome, endometrial cancer and controls; 34 participants in each group) were recruited. Clinical and biochemical assessments were performed before endometrial biopsies were obtained from all participants. Taqman real-time polymerase chain reaction for endometrial sterol regulatory element binding protein-1 gene and its systemic protein expression were analyzed.

    RESULTS: The body mass indices of women with polycystic ovary syndrome (29.28 ± 2.91 kg/m(2) ) and controls (28.58 ± 2.62 kg/m(2) ) were not significantly different. Women with endometrial cancer had a higher mean body mass index (32.22 ± 5.70 kg/m(2) ). Sterol regulatory element binding protein-1 gene expression was significantly increased in polycystic ovary syndrome and endometrial cancer endometrium compared with controls (p 

  7. Bhawani SA, Albishri HM, Khan ZA, Mohamad Ibrahim MN, Mohammad A
    J Anal Methods Chem, 2013;2013:973280.
    PMID: 24455427 DOI: 10.1155/2013/973280
    This review incorporates a large number of chromatographic systems modified by the surfactants. A large number of solvent systems and stationary phases are summarized in this paper. Three different kinds of surfactants (anionic, cationic, and nonionic) are used as modifiers for stationary phases as well as solvent systems. Surfactants are used at all the three different concentration levels (below, above, and at critical micelle concentration) where surfactants behave differently. Modifications of both stationary phases and solvent systems by surfactants produced a new generation of chromatographic systems. Microemulsion solvent systems are also incorporated in this paper. Microemulsion thin-layer chromatography is a new approach in the field of chromatography.
  8. Vasudevan R, Ismail P, Jaafar N, Mohamad N, Etemad E, Wan Aliaa W, et al.
    Balkan J. Med. Genet., 2014 Jun;17(1):37-40.
    PMID: 25741213 DOI: 10.2478/bjmg-2014-0023
    The aim of this study was to determine the association of the c.894G>T; p.Glu298Asp polymorphism and the variable number tandem repeat (VNTR) polymorphism of the endothelial nitric oxide synthase (eNOS) gene and c.181C>T polymorphism of the bradykinin type 2 receptor gene (B2R) in Malaysian end-stage renal disease (ESRD) subjects. A total of 150 ESRD patients were recruited from the National Kidney Foundation's (NKF)dialysis centers in Malaysia and compared with 150 normal healthy individuals. Genomic DNA was extracted from buccal cells of all the subjects. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was carried out to amplify the products and the restricted fragments were separated by agarose gel electrophoresis. Statistical analyses were carried out using software where a level of p <0.05 was considered to be statistically significant. The genotypic and allelic frequencies of the B2R gene (c.181C>T, 4b/a) and eNOS gene (c.894G>T) polymorphisms were not statistically significant (p >0.05) when compared to the control subjects. The B2R and eNOS gene polymorphisms may not be considered as genetic susceptibility markers for Malaysian ESRD subjects.
  9. Abdullah WZ, Ismail R, Nasir A, Mohamad N, Hassan R
    Fetal Pediatr Pathol, 2013 Apr;32(2):77-81.
    PMID: 22536947 DOI: 10.3109/15513815.2012.671447
    Combined factor V and VIII deficiency is a rare bleeding disorder. Diagnosis of congenital coagulation factor deficiency in a neonate is challenging due to "immaturity" of the hemostatic system. A 2-day-old baby girl presented with spontaneous cephalhematoma. She was found to have persistent abnormal coagulation tests and finally diagnosed as combined factor V and VIII deficiency. Interestingly, factor V and factor VIII in developmental hemostasis are quite similar with adult levels in newborn, and hence early diagnosis is possible. An investigation to detect underlying hemostatic defects is recommended in newborns with spontaneous cephalhematoma.
  10. Mohamad N, Bakar NH, Musa N, Talib N, Ismail R
    Harm Reduct J, 2010;7:30.
    PMID: 21167035 DOI: 10.1186/1477-7517-7-30
    BACKGROUND: Methadone is a synthetic opiate mu receptor agonist that is widely used to substitute for illicit opiates in the management of opiate dependence. It helps prevent opiate users from injecting and sharing needles which are vehicles for the spread of HIV and other blood borne viruses. This study has the objective of determining the utility of daily methadone dose to predict retention rates and re-injecting behaviour among opiate dependents.
    METHODS: Subjects comprised opiate dependent individuals who met study criteria. They took methadone based on the Malaysian guidelines and were monitored according to the study protocols. At six months, data was collected for analyses. The sensitivity and specificity daily methadone doses to predict retention rates and re-injecting behaviour were evaluated.
    RESULTS: Sixty-four patients volunteered to participate but only 35 (54.69%) remained active and 29 (45.31%) were inactive at 6 months of treatment. Higher doses were significantly correlated with retention rate (p < 0.0001) and re-injecting behaviour (p < 0.001). Of those retained, 80.0% were on 80 mg or more methadone per day doses with 20.0% on receiving 40 mg -79 mg.
    CONCLUSIONS: We concluded that a daily dose of at least 40 mg was required to retain patients in treatment and to prevent re-injecting behaviour. A dose of at least 80 mg per day was associated with best results.
  11. Tan PC, Hassan SK, Mohamad NA, Gan SH
    J Clin Pharm Ther, 2012 Feb;37(1):100-4.
    PMID: 21128989 DOI: 10.1111/j.1365-2710.2010.01232.x
    WHAT IS KNOWN AND OBJECTIVE: Interindividual variability in drug responses may be attributable to genetically determined alteration in enzyme activity. In this study, we investigated the association between cytochrome P450 3A4 (CYP3A4) genetic polymorphisms and post-operative fentanyl requirements.

    METHODS: Patients (n = 94) scheduled for gynaecological laparotomy received i.v. fentanyl infusion (3 μg/kg/h) after induction of general anaesthesia. Post-operative fentanyl requirements were quantified by using a patient-controlled analgesia and the number of i.v. fentanyl rescue analgesia required were recorded. Pain control was assessed using visual analogue scores (VAS) and fentanyl's adverse effects were documented. CYP3A4*4, CYP3A4*5 and CYP3A4*18 alleles of cytochrome P450 3A4 were identified by polymerase chain reaction-restriction fragment length polymorphism. Differences in fentanyl requirements, VAS scores and adverse effects among the various genotypes were compared.

    RESULTS AND DISCUSSION: No CYP3A4*4 and CYP3A4*5 alleles were detected. Eighty-nine patients (94·7%) were wild-type, five (5·3%) were heterozygous and none was homozygous. No significant difference was demonstrated between the genotype groups in terms of fentanyl consumption, pain control and adverse effects.

    WHAT IS NEW AND CONCLUSION: CYP3A4*4 and CYP3A4*5 are rare in the Malaysian Malay population. Genetic polymorphism of CYP3A4*18 may not play an important role in influencing postoperative fentanyl requirements.

  12. Adnan LH, Bakar NH, Mohamad N
    Iran J Basic Med Sci, 2014 Dec;17(12):926-8.
    PMID: 25859295
    Methadone is widely being used for opioid substitution therapy. However, the administration of methadone to opioid dependent individual is frequently accompanied by withdrawal syndrome and chemical dependency develops. Other than that, it is also difficult to retain patients in the treatment programme making their retention rates are decreasing over time. This article is written to higlights the potential use of prophetic medicines, Nigella sativa, as a supplement for opioid dependent receiving methadone. It focuses on the potential role of N. sativa and its major active compound, Thymoquinone (TQ) as a calcium channel blocking agent to reduce withdrawal syndrome and opioid dependency.
  13. Mohamad N, Saddki N, Azman KNK, Aziz IDA
    Korean J Fam Med, 2019 Jul;40(4):261-268.
    PMID: 30625269 DOI: 10.4082/kjfm.18.0021
    BACKGROUND: Breastmilk is the best nourishment for an infant for the first 6 months of life. Health professionals like medical doctors and dentists can help promote and support exclusive breastfeeding. We aimed to assess knowledge, attitudes, exposure, and future intentions toward exclusive breastfeeding among final year medical and dental students at Universiti Sains Malaysia, Kelantan, Malaysia.

    METHODS: A total of 162 students participated in this cross-sectional study that was conducted between May and September of 2015. Self-administered questionnaires were used to collect the variables of interest.

    RESULTS: Most students knew exclusive breastfeeding is recommended for the first 6 months of life (98.1%). However, some students incorrectly thought formula milk can be given if the infant appears hungry after having been breastfed (61.7%). Additionally, some incorrectly thought expressed breastmilk can be warmed on direct heat (47.5%) and left-over expressed milk can be re-stored (60.5%). Most students agreed that exclusive breastfeeding is easier to practice than formula feeding and that it is the best choice for working mothers. Most students (93.2%) intend to breastfeed their children, and this intention was significantly associated with their experience being breastfed as infants and attitudes toward exclusive breastfeeding.

    CONCLUSION: Generally, final year medical and dental students have favorable attitudes and future intentions toward exclusive breastfeeding, although some of them lacked knowledge about certain important aspects of the practice. Past experience of being exclusively breastfed and a more positive attitude toward the practice were associated with their future intentions to practice exclusive breastfeeding.

  14. Draman N, Mohamad N, Yusoff HM, Muhamad R
    J Taibah Univ Med Sci, 2017 Oct;12(5):412-417.
    PMID: 31435272 DOI: 10.1016/j.jtumed.2017.05.005
    Objectives: This study aimed to determine the association between decision making for breastfeeding practices and associated factors for exclusive breastfeeding practices among parents attending primary health care facilities.

    Methods: This cross-sectional study involved 196 parents who attended primary health care facilities in suburban Malaysia. A self-administered questionnaire was given to assess decision-making styles and factors associated with exclusive breastfeeding practices. Systematic random sampling was used for the non-exclusive breastfeeding group, and convenience sampling was used for the exclusive breastfeeding group. Multiple logistic regression analysis was conducted to determine the associated factors for exclusive breastfeeding practices.

    Results: We found an association between the mutual decision of parents on exclusive breastfeeding and exclusive breastfeeding practices. Previous exclusive breastfeeding experience, fathers' ages, mothers' occupations and mutual decisions had significant impact on exclusive breastfeeding practices.

    Conclusion: The important determinant for practising exclusive breastfeeding is parents' mutual decisions. Therefore, practitioners need to continuously educate and emphasize the fathers' role in the breastfeeding process.

  15. Azmi NS, Mohamad N, Razali NA, Zamli AKT, Sapiai NA
    Med J Malaysia, 2021 03;76(2):264-266.
    PMID: 33742643
    Septic arthritis (SA) occurrence for temporomandibular joint (TMJ) is rare. Pain, fever, swelling or loss of TMJ function are the typical presentation. The more common diagnosis for these presentations is internal derangement, osteoarthritis and rheumatoid arthritis. Therefore, TMJ septic arthritis is a challenging diagnosis and at risk of delayed diagnosis. We present a case of TMJ septic arthritis in a 46 year old Malay female with underlying hypertension and hypercholestrolemia, which was diagnosed as internal derangement in the initial presentation. The initial radiograph was normal. Arthrocentesis procedure had temporarily relieved the symptoms before progressive facial swelling developed after a week. Contrast enhanced computed tomography (CECT) brain revealed left TMJ abscess formation with left condylar erosion. Patient subsequently improved after wound debridement, left condylectomy and antimicrobial therapy.
  16. Johar N, Mohamad N, Saddki N, Tengku Ismail TA, Sulaiman Z
    Korean J Fam Med, 2021 Mar;42(2):140-149.
    PMID: 32423181 DOI: 10.4082/kjfm.19.0178
    BACKGROUND: Cesarean delivery is linked with lower rates of early breastfeeding initiation. This study aimed to determine the prevalence and associated factors of early initiation of breastfeeding among women admitted for elective cesarean delivery in Kelantan, Malaysia.

    METHODS: A total of 171 women admitted for elective cesarean delivery at two tertiary hospitals in Kelantan, Malaysia, participated in this study. On day two after cesarean delivery, face-to-face interviews were conducted with the mothers to get information on feeding practice. Descriptive statistics, including simple and multiple logistic regressions, were used for data analysis.

    RESULTS: Seventy-three percent of mothers initiated breastfeeding within 1 hour of birth. Approximately 15.8% and 10.5% of mothers initiated breastfeeding within 24 hours and ≥24 hours, respectively. Skin-to-skin contact between mothers and their infants occurred in 77.8% of cases after cesarean delivery. Breastfeeding initiation was significantly associated with skin-to-skin contact (odds ratio [OR], 14.42; 95% confidence interval [CI], 3.58-58.06), mothers who exclusively breastfed during hospitalization (OR, 36.37; 95% CI, 5.60-236.24), and infants who were not sleepy during attempts at breastfeeding (OR, 5.17; 95% CI, 1.32-20.21).

    CONCLUSION: Based on our results, it is possible to increase the proportion of mothers initiating breastfeeding within 1 hour among women who undergo elective cesarean delivery. Therefore, it is important that health practitioners educate women beginning in the antenatal period who plan to undergo cesarean delivery by emphasizing the importance of early initiation of breastfeeding.

  17. Mohamad N, Sulaiman Z, Tengku Ismail TA, Ahmad S
    Korean J Fam Med, 2021 Jul;42(4):339-341.
    PMID: 32475105 DOI: 10.4082/kjfm.20.0057
    "Rusty pipe syndrome" is a condition that needs to be considered in a primiparous woman who presents with bilateral bloody nipple discharge in the early postpartum period. Its prevalence is low and can occur due to physiological condition that arises primarily in primiparous women with increased alveolar and ductal vascularization associated with the onset of lactation. Here, we report a case of a 29-year-old primigravida who presented with bilateral painless bloody nipple discharge after delivery. Her breast examination showed no signs of infection or structural changes, and breast ultrasound did not reveal any significant observations except for a bilateral simple breast cyst. Six days after the onset of lactation, the bloody nipple discharge ceased and lactation continued on demand.
  18. Yee LS, Zakaria R, Mohamad N, Fong OW
    J Taibah Univ Med Sci, 2021 Aug;16(4):632-636.
    PMID: 34408618 DOI: 10.1016/j.jtumed.2021.01.001
    Non-gestational choriocarcinoma of the ovary is an extremely rare clinical condition. Very few cases of this high-grade malignancy of the ovary are reported in the literature worldwide. Given the rarity of the tumour, this disease is generally overlooked, which leads to delayed diagnosis and management. For the attending clinicians, the non-gestational choriocarcinoma of the ovary poses a diagnostic challenge due to its non-specific clinical presentations. A 16-year-old girl presented with pain in the right iliac fossa and with a positive urine pregnancy test. Despite being sexually inactive, the patient was diagnosed with an ectopic pregnancy and underwent emergency laparoscopic surgery. Six weeks later, the histopathological analysis revealed a diagnosis of non-gestational choriocarcinoma of the ovary. Further evaluations showed that her cancer had already advanced to stage IV. In this case report, the non-specific presentations of the disease, radiological features, current treatments, and possible safety strategies are discussed.
  19. Mohammad KN, Badrul MM, Mohamad N, Zainal-Abidin AH
    Trop Biomed, 2013 Dec;30(4):615-20.
    PMID: 24522131 MyJurnal
    The parasitic protozoan fauna in sixty-six anurans comprising of Duttaphrynus melanostictus, Phrynoidis juxtaspera, Hylarana erythraea and Polypedates leucomystax collected from Zoo Negara Malaysia was investigated. The distribution and prevalence rate of parasitic species in the digestive tract and blood were examined. Seven species of intestinal protozoa (Opalina ranarum, Cepedea dimidiata, Nycthetorus cordiformis, Entamoeba ranarum, Iodamoeba butschlii, Endamoeba blattae, and Tritrichomonas sp.) and two species of blood protozoa (Lankesterella sp. and Trypanosoma sp.) were recorded. Opalina ranarum was the most common protozoan found in the rectum and intestine (prevalence rate: 34.8%) infecting all host species, with P. juxtaspera heavily infected with the parasite, whereas Tritrichomonas sp. was the least prevalent intestinal species infecting only D. melanostictus. Both Lankesterella sp. and Trypanosoma sp. were found in the blood of H. erythraea.
  20. Mohamad N, Ubaidillah, Mazlan SA, Imaduddin F, Choi SB, Yazid IIM
    PLoS One, 2018;13(4):e0191795.
    PMID: 29630595 DOI: 10.1371/journal.pone.0191795
    In this study, a new magnetorheological (MR) grease was made featuring plate-like carbonyl iron (CI) particles, and its magnetic field-dependent rheological properties were experimentally characterized. The plate-like CI particles were prepared through high-energy ball milling of spherical CI particles. Then, three different ratios of the CI particles in the MR grease, varying from 30 to 70 wt% were mixed by dispersing the plate-like CI particles into the grease medium with a mechanical stirrer. The magnetic field-dependent rheological properties of the plate-like CI particle-based MR grease were then investigated using a rheometer by changing the magnetic field intensity from 0 to 0.7 T at room temperature. The measurement was undertaken at two different modes, namely, a continuous shear mode and oscillation mode. It was shown that both the apparent viscosity and storage modulus of the MR grease were heavily dependent on the magnetic field intensity as well as the CI particle fraction. In addition, the differences in the yield stress and the MR effect between the proposed MR grease featuring the plate-like CI particles and the existing MR grease with the spherical CI particles were investigated and discussed in detail.
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