Displaying publications 41 - 60 of 1702 in total

Abstract:
Sort:
  1. Fulltext Delayed spontaneous traumatic pneumocephalus
    Chandran TH, Prepageran N, Philip R, Gopala K, Zubaidi AL, Jalaludin MA
    Med J Malaysia, 2007 Dec;62(5):411-2.
    PMID: 18705478 MyJurnal
    Pneumocephalus or collection of air in the intracranial cavity can occur after trauma or surgery. However, delayed pneumocephalus occurring months after the initial injury is not common. We would like to report a case of spontaneous traumatic pneumoencephalocele presenting with transient recurrent hemiparesis 14 months after the initial trauma.
    Matched MeSH terms: Time Factors
  2. Size-related flowering and fecundity in the tropical canopy tree species, Shorea acuminata (Dipterocarpaceae) during two consecutive general flowerings
    Naito Y, Kanzaki M, Numata S, Obayashi K, Konuma A, Nishimura S, et al.
    J Plant Res, 2008 Jan;121(1):33-42.
    PMID: 17943228
    We monitored the reproductive status of all trees with diameters at breast height (dbh) >30 cm in a 40-ha plot at Pasoh, west Malaysia, and investigated the individual fecundity of 15 Shorea acuminata Dyer (Dipterocarpaceae) trees using seed-trapping methods during two consecutive general flowering periods in 2001 (GF2001) and 2002 (GF2002). The proportion of flowering trees was higher, and not dependent on size, in GF2002 (84.2%), than in GF2001 (54.5%), when flowering mainly occurred in trees with a dbh < or =70 cm. Fecundity parameters of individual trees per event varied widely (221,000-35,200,000 flowers, 0-139,000 mature seeds, and 1.04-177 kg total dry matter mass of fruit (TDM) per tree). Monotonic increases with increasing tree size were observed for flower production and TDM amongst trees up to 90 cm in dbh, but not for mature seed production or for any of these parameters amongst larger trees. The pattern of reproductive investment during the two consecutive reproductive events clearly differed between medium-sized and large trees; the former concentrated their reproductive investment in one of the reproductive events whereas the latter allocated their investment more evenly to both reproductive events. Our results suggest size-related differences in the resource allocation pattern for reproduction.
    Matched MeSH terms: Time Factors
  3. Comparison of the Newtonian and relativistic predicted trajectories for a low-speed periodically delta-kicked system
    Lan BL
    Chaos, 2006 Sep;16(3):033107.
    PMID: 17014212
    The dynamics of a periodically delta-kicked Hamiltonian system moving at low speed (i.e., at speed much less than the speed of light) is studied numerically. In particular, the trajectory of the system predicted by Newtonian mechanics is compared with the trajectory predicted by special relativistic mechanics for the same parameters and initial conditions. We find that the Newtonian trajectory, although close to the relativistic trajectory for some time, eventually disagrees completely with the relativistic trajectory, regardless of the nature (chaotic, nonchaotic) of each trajectory. However, the agreement breaks down very fast if either the Newtonian or relativistic trajectory is chaotic, but very much slower if both the Newtonian and relativistic trajectories are nonchaotic. In the former chaotic case, the difference between the Newtonian and relativistic values for both position and momentum grows, on average, exponentially. In the latter nonchaotic case, the difference grows much slower, for example, linearly on average.
    Matched MeSH terms: Time Factors
  4. The rapid-response: a break during lecture
    Rao M
    Adv Physiol Educ, 2006 Jun;30(2):95.
    PMID: 16709743
    Matched MeSH terms: Time Factors
  5. Fulltext Sequential push-pull pumping mechanism for washing and evacuation of an immunoassay reaction chamber on a microfluidic CD platform
    Thio TH, Ibrahim F, Al-Faqheri W, Soin N, Kahar Bador M, Madou M
    PLoS One, 2015;10(4):e0121836.
    PMID: 25853411 DOI: 10.1371/journal.pone.0121836
    A centrifugal compact disc (CD) microfluidic platform with reservoirs, micro-channels, and valves can be employed for implementing a complete immunoassay. Detection or biosensor chambers are either coated for immuno-interaction or a biosensor chip is inserted in them. On microfluidic CDs featuring such multi-step chemical/biological processes, the biosensor chamber must be repeatedly filled with fluids such as enzymes solutions, buffers, and washing solutions. After each filling step, the biosensor chamber needs to be evacuated by a passive siphoning process to prepare it for the next step in the assay. However, rotational speed dependency and limited space on a CD are two big obstacles to performing such repetitive filling and siphoning steps. In this work, a unique thermo-pneumatic (TP) Push-Pull pumping method is employed to provide a superior alternative biosensor chamber filling and evacuation technique. The proposed technique is demonstrated on two CD designs. The first design features a simple two-step microfluidic process to demonstrate the evacuation technique, while the second design shows the filling and evacuation technique with an example sequence for an actual immunoassay. In addition, the performance of the filling and evacuation technique as a washing step is also evaluated quantitatively and compared to the conventional manual bench top washing method. The two designs and the performance evaluation demonstrate that the technique is simple to implement, reliable, easy to control, and allows for repeated push-pulls and thus filling and emptying of the biosensor chamber. Furthermore, by addressing the issue of rotational speed dependency and limited space concerns in implementing repetitive filling and evacuation steps, this newly introduced technique increases the flexibility of the microfluidic CD platform to perform multi-step biological and chemical processes.
    Matched MeSH terms: Time Factors
  6. Fulltext A retrospective study of death among patients treated for tuberculosis in the Klang Chest Clinic for the year 1999
    Venugopalan B, Rajendra P
    Med J Malaysia, 2001 Mar;56(1):39-43.
    PMID: 11503294
    A retrospective epidemiological study was done on 41 deaths among patients treated for TB in the Klang Chest Clinic for the year 1999. The findings revealed a male preponderance of TB deaths with Indians having the highest case fatality rate (8.6%). The majority of deaths occurred within the 25-44 year age group. Of those cases diagnosed as Pulmonary TB, 69% were diagnosed as far-advanced, at presentation, based on chest x-rays reported. Eighty three percent of these patients were still on treatment when they died. HIV was the most common co-existing disease condition and was implicated in 14.6% of the deaths. The recommendations include implementation of clinical guidelines on TB screening for HIV patients, a study to evaluate the effectiveness of the current TB surveillance programme and for chest x-rays of all sputum smear negative patients to be reported by the radiologist to reduce the risk of misdiagnosis.
    Study site: Chest clinic, Kelang, Selangor, Malaysia
    Matched MeSH terms: Time Factors
  7. Cross flow ultrafiltration studies on solutions of pectin with pulsatile flow in-situ cleaning
    Shamel MM, Sulaiman NM, Sulaiman MZ
    Artif Cells Blood Substit Immobil Biotechnol, 1999 Sep-Nov;27(5-6):447-53.
    PMID: 10595447
    A study was conducted to evaluate the cross flow tubular ultrafiltration behavior of aqueous solutions of pectin. The effectiveness of pulsatile flow as a cleaning-in-place (CIP) technique to improve permeate flux was undertaken on the above mentioned solution. This investigation is part of a study to apply membrane filtration in the clarification of tropical fruit juice. The main variables, which were investigated, include the concentration of pectin, pulse frequency and amplitude. It was found that the amount of pectin in the solution significantly affects its ultrafiltration behavior. From the observed profiles, it is evident that the formation of gel layer on the membrane surface is responsible for the leveling of flux at high pressures. The presence of pectin was found to affect the properties of the solution such as viscosity, pH and the size of pectin colloid. Improvements in the permeate flux for pectin solution were obtained by employing pulsatile flow cleaning-in-place technique. Both pulse frequency and amplitude are important parameters that can improve the improvement of in-situ cleaning method. Similar to several findings reported in the literature, pulsatile flow showed significant effectiveness of about 60% higher flux when the ultrafiltration process is operated under laminar condition.
    Matched MeSH terms: Time Factors
  8. A state-wide campaign for the early detection of cancer in Sabah
    Oommen RM
    Aust N Z J Surg, 1994 Jan;64(1):22-3.
    PMID: 8267532
    The Medical Department of Sabah, in collaboration with various governmental and non-governmental agencies and 'Surgeons International' conducted a state-wide campaign for the 'Early Detection of Cancer' over a period of 3 months from July 1992. The purpose of the campaign was to educate the population about the early signs and symptoms of common cancers, to remove the myth that cancer was incurable and to impress on the public the need to detect cancer early for a possible cure and a better prognosis.
    Matched MeSH terms: Time Factors
  9. Bacteriology turnaround time in seven Malaysian general hospitals
    Lim VK, Cheong YM
    Malays J Pathol, 1992 Jun;14(1):41-3.
    PMID: 1469917
    A turnaround time study was conducted for bacteriological culture tests in seven Malaysian general hospitals. The turnaround times were determined using a specially designed form that was completed by the ward staff. Doctors at these hospitals were also polled to find out whether they were satisfied with the promptness of bacteriological test reporting in their hospitals. The turnaround times obtained from this survey were found to be satisfactory taking into account the constraints of laboratory methods employed. Nevertheless only about a third of doctors expressed satisfaction with the timeliness of the bacteriological test reporting. Doctors and microbiologists should get together and agree on acceptable standards of turnaround times that are practical and reasonable.
    Matched MeSH terms: Time Factors
  10. Managing the initial period of implementation of educational change
    Shahabudin SH, Safiah N
    Med Teach, 1991;13(3):205-11.
    PMID: 1745110
    Three years ago the Universiti Kebangsaan Malaysia medical school changed its curriculum from the traditional discipline based curriculum to the integrated organ-system approach. Once change was effected a process of 'refreezing' had to be initiated whereby new responses had to be reintegrated into the ongoing personality or emotional relationships of important people so that the change process will endure and become stable. During this refreezing process the faculty encountered several problems which could thwart further development of the new curricula if left unresolved. The nature of the problems seemed to indicate that curricular change involves more than just efforts at bettering the what and ways of student learning and assessment. A lot of energy was also spent on keeping things going, keeping people motivated, making sure the work was done (at least as well as it has in the past), looking for better ways to do things, weighing new solutions and to be alert to new problems. In ensuring the continuance of change it was important to ensure, from the outset the institutionalization of policies, programmes, procedures and practices for continuing reward, routinization, structural integration into the system, continuing evaluation and providing for continuing maintenance.
    Matched MeSH terms: Time Factors
  11. Fulltext An assessment of Stuart's transport medium in the diagnosis of gonorrhoea
    Lee CH, Ngeow YF
    Med J Malaysia, 1983 Mar;38(1):23-6.
    PMID: 6633329
    Genital discharge from patients unth. smear positive gonorrhoea was transported from the clinic to the laboratory in. Stuart's transport medium (Oxoid CM 111). Within. six hours of transit time the recovery rate of gonococci was 94%. When compared with "bedside" inoculation onto Modified Thayer Martin medium, there was no significant difference in recovery rates up to 6 hours of transportation in Stuart's transport medium, However, the rate of isolation of gonococci was significantly reduced after 20 to 30 hours of transportation. It is concluded that Stuart's transport medium is an acceptable transport medium for specimens containing gonococci when specimens reach the laboratory within 6 hours of collection.
    Matched MeSH terms: Time Factors
  12. Fulltext The risk of neonatal infection following prolonged rupture of the fetal membranes
    Boo NY
    Med J Malaysia, 1989 Mar;44(1):35-40.
    PMID: 2626112
    Over a seven month period in 1986, 164 (1.1%) of a total 15,131 neonates delivered in the Maternity Hospital, Kuala Lumpur were born to mothers with prolonged rupture of the fetal membranes. Septic work-ups were performed on 163 of these babies shortly after birth, 77 of them had no bacteriological, radiological or other clinical evidence of infection. The remaining 86 had additional history of illness. Nine of these 86 babies had proven infection: four with septicemia, one with meningitis and four others with congenital pneumonia. This study showed that neonates had risk of infection only when maternal history of prolonged rupture of the fetal membranes was associated with other clinical evidence of infection. However, even in this group of neonates at risk, 89.5% of them were not infected. Therefore, there is still a need to develop a simple, rapid, reliable and cheap laboratory method to help early identification of the infected from the non-infected neonates in order to prevent unnecessary antibiotic treatment and hospital stay.
    Matched MeSH terms: Time Factors
  13. Fulltext The resurgence of tuberculosis
    Lim VK
    Med J Malaysia, 1991 Dec;46(4):298-300.
    PMID: 1840435
    Matched MeSH terms: Time Factors
  14. Cadmium content in rice and its daily intake in various countries
    Rivai IF, Koyama H, Suzuki S
    Bull Environ Contam Toxicol, 1990 Jun;44(6):910-6.
    PMID: 2354269
    Matched MeSH terms: Time Factors
  15. Fulltext Evaluation of three commercial rapid tests for detecting antibodies to human immunodeficiency virus
    Ng KP, Saw TL, Baki A, Kamarudin R
    Med J Malaysia, 2003 Aug;58(3):454-60.
    PMID: 14750391
    Determine HIV-1/2, Chembio HIV-1/2 STAT-PAK and PenTest are simple/rapid tests for the detection of antibodies to HIV-1 and HIV-2 in human whole blood, serum and plasma samples. The assay is one step and the result is read visually within 15 minutes. Using 92 known HIV-1 reactive sera and 108 known HIV-1 negative sera, the 3 HIV tests correctly identified all the known HIV-1 reactive and negative samples. The results indicated that Determine HIV-1/2, Chembio HIV-1/2 STAT-PAK and PenTest HIV are as sensitive and specific (100% concordance) as Microparticle Enzyme Immunoassay. The data indicated that these 3 HIV tests are effective testing systems for diagnosis of HIV infection in a situation when the conventional Enzyme Immunoassay is not suitable.
    Matched MeSH terms: Time Factors
  16. A comparative study of road traffic accidents in West Malaysia
    Silva JF
    Trop Doct, 1979 Oct;9(4):221-7.
    PMID: 516150
    Matched MeSH terms: Time Factors
  17. Problems in the early diagnosis of genital tuberculosis
    Puraviappan A, Hing NK, Ping WW
    Med J Malaysia, 1975 Mar;30(3):202-5.
    PMID: 1160679
    Matched MeSH terms: Time Factors
  18. Fulltext Kidney-inspired algorithm with reduced functionality treatment for classification and time series prediction
    Jaddi NS, Abdullah S
    PLoS One, 2019;14(1):e0208308.
    PMID: 30608936 DOI: 10.1371/journal.pone.0208308
    Optimization of an artificial neural network model through the use of optimization algorithms is the common method employed to search for an optimum solution for a broad variety of real-world problems. One such optimization algorithm is the kidney-inspired algorithm (KA) which has recently been proposed in the literature. The algorithm mimics the four processes performed by the kidneys: filtration, reabsorption, secretion, and excretion. However, a human with reduced kidney function needs to undergo additional treatment to improve kidney performance. In the medical field, the glomerular filtration rate (GFR) test is used to check the health of kidneys. The test estimates the amount of blood that passes through the glomeruli each minute. In this paper, we mimic this kidney function test and the GFR result is used to select a suitable step to add to the basic KA process. This novel imitation is designed for both minimization and maximization problems. In the proposed method, depends on GFR test result which is less than 15 or falls between 15 and 60 or is more than 60 a particular action is performed. These additional processes are applied as required with the aim of improving exploration of the search space and increasing the likelihood of the KA finding the optimum solution. The proposed method is tested on test functions and its results are compared with those of the basic KA. Its performance on benchmark classification and time series prediction problems is also examined and compared with that of other available methods in the literature. In addition, the proposed method is applied to a real-world water quality prediction problem. The statistical analysis of all these applications showed that the proposed method had a ability to improve the optimization outcome.
    Matched MeSH terms: Time Factors
  19. Susceptibility of laboratory and field-collected Aedes aegypti and Aedes albopictus to Bacillus thuringiensis israelensis H-14
    Lee YW, Zairi J
    J Am Mosq Control Assoc, 2006 Mar;22(1):97-101.
    PMID: 16646329
    Susceptibility levels of a few laboratory-cultured and dengue-endemic area field-collected strains of Aedes aegypti and Aedes albopictus to Bacillus thuringiensis israelensis (Bti) at different storage ages were studied. The susceptibility of laboratory-cultured World Health Organization (WHO) Bora Bora reference, Vector Control Research Unit (VCRU), and Fumakilla Malaysia Berhad (FMB) strains of Ae. aegypti to Bti was examined. The sensitivity to Bti decreased with storage age. The median lethal concentration (LC50) for Bti increased by 2-3 times after 2 years compared to a fresh sample (3-6 months of storage). However, after the 2-year storage period, Bti still provided very good efficacy against all laboratory-cultured susceptible strains of Ae. aegypti and Ae. albopictus. The observed 95% lethal concentration values were about 20 times lower than the recommended concentration (6,000 international toxic units (ITU)/liter). Results obtained from the study against the dengue-endemic area field-collected strains of Ae. aegypti and Ae. albopictus confirmed the effectiveness of the Bti after storage for 2 years (18-24 months). For Ae. aegypti, the Ujung Batu strain was the most susceptible to Bti, whereas the Sungai Nibong strain showed the most tolerance. Susceptibility of laboratory-cultured strains varied; the Air Itam strain of Ae. albopictus was the most susceptible to Bti, whereas the Kampung Serani strain was the most tolerant among the field strains. However, the laboratory strain of Ae. albopictus was more susceptible than all the field strains.
    Matched MeSH terms: Time Factors
  20. Olfactory and Gustatory Dysfunctions as a Clinical Manifestation of Coronavirus Disease 2019 in a Malaysian Tertiary Center
    Ramasamy K, Saniasiaya J, Abdul Gani N
    Ann Otol Rhinol Laryngol, 2021 May;130(5):513-519.
    PMID: 33025798 DOI: 10.1177/0003489420963165
    OBJECTIVE: To investigate the prevalence of olfactory and gustatory dysfunction among patients with COVID-19 infection and the recovery rate.

    METHODS: Adult patients (≥18 years) tested positive for COVID-19 via reverse transcription-polymerase chain reaction (RT-PCR) and admitted in Hospital Tuanku Ja'afar Seremban, Malaysia, were recruited in this study. Patients completed a questionnaire via telephone interview comprising the following details: age, sex, ethnicity, comorbidities, general and otorhinolaryngological symptoms, onset and duration of olfactory and gustatory dysfunction. Patients with persistent olfactory and gustatory dysfunction at the time of the initial interview were followed-up every 3 to 5 days till resolution.

    RESULTS: A total of 145 patients were included in our study. The mean age of patients was 43.0 ± 17.7 (range: 18-86). Fever (44.1%) and cough (39.3%) were the most prevalent general symptoms. Thirty-one patients (21.4%) reported olfactory dysfunction and 34 (23.4%) reported dysgeusia. There was a significant association between both olfactory and gustatory dysfunction (P 

    Matched MeSH terms: Time Factors
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links