MyMedR

Displaying publications 41 - 60 of 152 in total

Abstract:

Sort:

Fulltext Seismic isolation retrofitting solution for an existing steel cable-stayed bridge

Javanmardi A, Ibrahim Z, Ghaedi K, Khan NB, Benisi Ghadim H

PLoS One, 2018;13(7):e0200482.
PMID: 30059506 DOI: 10.1371/journal.pone.0200482

This paper investigated the seismic retrofitting of an existing cable-stayed bridge through the use of a seismic isolation system. The bridge is situated in a high seismic zone. During the Saguenay earthquake 1988, one of the anchorage plates of the bridge supports failed. Herein, several configurations of seismic isolation system were considered to identify an appropriate solution for the seismic retrofitting of the bridge in both the longitudinal and transverse directions. A three-dimensional model of the bridge was created, and its seismic behavior studied through nonlinear dynamic time-history analysis. The comparative performance study among the five retrofitting configurations showed that the partial seismic isolation of the bridge led to an enhancement of the seismic response of the bridge in one direction only. However, the overall seismic response of the cable-stayed bridge substantially improved in the longitudinal and transverse directions in cases where the isolation systems were utilized between the supports and the deck-tower connection of the bridge.

Matched MeSH terms: Disasters*
Fulltext Social media addiction and emotions during the disaster recovery period-The moderating role of post-COVID timing

Nur-A Yazdani DM, Abir T, Qing Y, Ahmad J, Al Mamun A, Zainol NR, et al.

PLoS One, 2022;17(10):e0274898.
PMID: 36264854 DOI: 10.1371/journal.pone.0274898

BACKGROUND: Social media addiction, a recently emerged term in medical science, has attracted the attention of researchers because of its significant physical and psychological effects on its users. The issue has attracted more attention during the COVID era because negative emotions (e.g., anxiety and fear) generated from the COVID pandemic may have increased social media addiction. Therefore, the present study investigates the role of negative emotions and social media addiction (SMA) on health problems during and after the COVID lockdown.
METHODS: A survey was conducted with 2926 participants aged between 25 and 45 years from all eight divisions of Bangladesh. The data collection period was between 2nd September- 13th October, 2020. Partial Least Square Structural Equation Modelling (PLS-SEM) was conducted for data analysis by controlling the respondents' working time, leisure time, gender, education, and age.
RESULTS: Our study showed that social media addiction and time spent on social media impact health. Interestingly, while anxiety about COVID increased social media addition, fear about COIVD reduced social media addition. Among all considered factors, long working hours contributed most to people's health issues, and its impact on social media addiction and hours was much higher than negative emotions. Furthermore, females were less addicted to social media and faced less health challenges than males.
CONCLUSION: The impacts of negative emotions generated by the COVID disaster on social media addiction and health issues should be reconsidered. Government and employers control people's working time, and stress should be a priority to solve people's social media addiction-related issues.

Matched MeSH terms: Disasters*
The ecoclimatology of Danum, Sabah, in the context of the world's rainforest regions, with particular reference to dry periods and their impact

Walsh RP, Newbery DM

Philos Trans R Soc Lond B Biol Sci, 1999 Nov 29;354(1391):1869-83.
PMID: 11605629

Climatic records for Danum for 1985-1998, elsewhere in Sabah since 1879, and long monthly rainfall series from other rainforest locations are used to place the climate, and particularly the dry period climatology, of Danum into a world rainforest context. The magnitude frequency and seasonality of dry periods are shown to vary greatly within the world's rainforest zone. The climate of Danum, which is aseasonal but subject, as in 1997-1998, to occasional drought, is intermediate between less drought-prone north-western Borneo and the more drought-prone east coast. Changes through time in drought magnitude frequency in Sabah and rainforest locations elsewhere in South-East Asia and in the Neotropics are compared. The 1997-1998 ENSO-related drought event in Sabah is placed into a historical context. The effects of drought on tree growth and mortality in the tropics are assessed and a model relating intensity and frequency of drought disturbance to forest structure and composition is discussed.

Matched MeSH terms: Disasters
Fulltext Multi-format information fusion through integrated metadata using hybrid ontology for disaster management

Che Mustapha Yusuf, J., Mohd Su’ud, M., Boursier, P., Muhammad, A.

Pertanika Journal of Science & Technology, 2013;21(1):217-226.
MyJurnal

Finding relevant disaster data from a huge metadata overhead often results in frustrating search
experiences caused by unclear access points, ambiguous search methods, unsuitable metadata, and long response times. More frequently, semantic relation between the retrieved objects is neglected. This paper presents a system architecture that makes use of ontologies in order to enable semantic metadata descriptions for gathering and integrating multi-format documents in the context of disaster management. After a brief discussion on the challenges of the integration process, the Multi-format Information Retrieval, Integration and Presentation (MIRIP) architecture is presented. A specific approach for ontology development and mapping process is introduced in order to semantically associate user’s query and documents metadata. An ontology model approach was designed to follow inspirational and collaborative approaches with top-down to bottom-up implementation. A prototype of the integrated disaster management information system is currently under development, based on the architecture that is presented in this paper.

Matched MeSH terms: Disasters
Fulltext Earthquake and tsunami research in USM: the role of disaster research nexus

Hock, Lye Koh, Su, Yean Teh, Taksiah A. Majid, Tze, Liang Lau, Fauziah Ahmad

Pertanika Journal of Science & Technology, 2012;20(1):151-163.
MyJurnal

The 2004 Banda Aceh earthquake and ensuing Andaman mega tsunami that killed a quarter million people worldwide is a wake-up call to many. Active research was initiated in Universiti Sains Malaysia (USM) immediately after the infamous event with the aims to help develop human capacity and resources, and to mitigate any future earthquake and tsunami. The Disaster Research Nexus (DRN) was formed recently within the School of Civil Engineering, USM, to facilitate active collaborative research on earthquakes and tsunamis, as well as on other natural disasters, such as landslides. This paper begins with an introduction to DRN. This is followed by a description of some research achievements undertaken by DRN staff. A concise exposition on the tsunami simulation model TUNA developed by the authors and its application to the 2004 Andaman tsunami are given to illustrate the capability of TUNA. The role of mangrove in reducing the impact of tsunami is then modelled. Tsunami may inundate coastal plain with large quantity of saline water, changing the salinity regimes in the soil and inducing vegetative succession changes. A model called MANHAM was developed to simulate the salinity changes and its associated vegetative evolution to assist in the rehabilitation of vegetation destroyed by tsunami. Meanwhile, an earthquake risk analysis for the Upper Pandas Dam in Sabah is then presented, and this is followed by a model estimation of tsunami forces on the coastal structures. The main objective of this paper is to reach out to research scientists and onsite risk reduction professionals to collaborate towards the development of a vibrant research culture to face future natural disasters such as earthquakes and tsunamis. It is hoped that DRN will move forward to further enhance active collaborations with other research and operational institutions worldwide towards developing earthquake and tsunami resilient communities.

Matched MeSH terms: Disasters
Fulltext The ASTER DEM generation for geomorphometric analysis of the Central Alborz Mountains, Iran

Mousavi, Seyed Ramzan, Pirasteh, Saied, Pradhan, Biswajeet, Mansor, Shattri, Ahmad Rodzi Mahmud

Pertanika Journal of Science & Technology, 2011;19(3):115-124.
MyJurnal

This research focuses on the ASTER DEM generation for visual and mathematical analysis of topography, landscapes and landforms, as well as modeling of surface processes of Central Alborz, Iran. ASTER DEM 15 m generated using tie points over the Central Alborz and Damavand volcano with 5671 m height from ASTER (Advanced Space borne Thermal Emission and Reflection Radiometer) satellite data using PCI Geomatica 9.1. Geomorphic parameters are useful to identify and describe geomorphologic forms and processes, which were extracted from ASTER DEM in GIS environment such as elevation, aspect, slope angle, vertical curvature, and tangential curvature. Although the elevation values are slightly low in altitudes above 5500 m asl., the ASTER DEM is useful in interpretation of the macro- and meso-relief, and provides the opportunity for mapping especially at medium scales (1:100,000 and 1:50,000). ASTER DEM has potential to be a best tool to study 3D model for to geomorphologic mapping and processes of glacial and per glacial forms above 4300 m asl.

Matched MeSH terms: Disasters
Fulltext Remotely sensed imagery data application in Mangrove forest: a review

Zulfa, A.W., Norizah, K.

Pertanika Journal of Science & Technology, 2018;26(3):899-922.
MyJurnal

The mangrove forest ecosystem acts as a shield against the destructive tidal waves, preventing the coastal areas and other properties nearby from severe damages; this protective function certainly deserves attention from researchers to undertake further investigation and exploration. Mangrove forest provides different goods and services. The unique environmental factors affecting the growth of mangrove forest are as follows: distance from the sea or the estuary bank, frequency and duration of tidal inundation, salinity, and composition of the soil. These crucial factors may under certain circumstances turn into obstacles in accessing and managing the mangrove forest. One effective method to circumvent this shortcoming is by using remotely sensed imagery data, which offers a more accurate way of measuring the ecosystem and a more efficient tool of managing the mangrove forest. This paper attempts to review and discuss the usage of remotely sensed imagery data in mangrove forest management, and how they will improve the accuracy and precision in measuring the mangrove forest ecosystem. All types of measurements related to the mangrove forest ecosystem, such as detection of land cover changes, species distribution mapping and disaster observation should take advantage of the advanced technology; for example, adopting the digital image processing algorithm coupled with high-resolution image available nowadays. Thus, remote sensing is a highly efficient, low-cost and time-saving technique for mangrove forest measurement. The application of this technique will further add value to the mangrove forest and enhance its in-situ conservation and protection programmes in combating the effects of the rising sea level due to climate change.

Matched MeSH terms: Disasters
Post-disaster victimization: how survivors of disasters can continue to suffer after the event is over

Phua KL

New Solut, 2008;18(2):221-31.
PMID: 18511398 DOI: 10.2190/NS.18.2.k

When public health researchers study the health effects of disasters (whether "naturally-occurring," disasters due to failure of technology, or disasters due to terrorism), some aspects of the post-disaster situation of victims are often overlooked. Social science research has shown that the vast majority of people tend to behave altruistically during and after a disaster. Nevertheless, cases of victimization of survivors do occur. They can include post-disaster victimization of survivors by other individuals (including fellow survivors, opportunistic outsiders, and even unethical aid workers and rogue members of the police, armed forces or international organizations such as the United Nations), groups (such as organized criminal gangs) and institutions (through neglect, incompetence, bureaucratic inefficiency or through institutionalized discriminatory practices). In this article, various kinds of post-disaster victimization that can occur are discussed.

Matched MeSH terms: Disasters*
Peat fires: emissions likely to worsen

Laurance SG, Laurance WF

Nature, 2015 Nov 19;527(7578):305.
PMID: 26581280 DOI: 10.1038/527305a
Matched MeSH terms: Disasters/prevention & control; Disasters/statistics & numerical data
Forest fires cause pollution crisis in Asia

Swinbanks D

Nature, 1997 Sep 25;389(6649):321.
PMID: 9311764
Matched MeSH terms: Disasters
Africa: Restrict bush fires used in animal hunts

Dalu MTB, Dalu T, Wasserman RJ

Nature, 2017 07 19;547(7662):281.
PMID: 28726820 DOI: 10.1038/547281c
Matched MeSH terms: Disasters/prevention & control
Fulltext Management of Emergency Department Overcrowding (EDOC) in a teaching hospital

Nik Azlan, N.M., Ismail, M.S.

Medicine & Health, 2013;8(1):0-0.
MyJurnal

Emergency Department Overcrowding (EDOC) has been a longstanding problem. It is defined as a situation where the demand for emergency services exceeds the ability of an Emergency Department (ED) to provide quality care within appropriate time frames. Hospital beds closure or access block to ward admission is one of the most important cause of Emergency s e.g. disaster. A surge response entails even greater responses including implementing Department overcrowding. This could be compounded further in events of a patient surge eg affirmative measurement in order to mitigate the issue in tackling the situation. The steps in managing EDOC were: 1. Recognizing EDOC, 2. Initiating action, 3. Maintaining patient flow, 4. Setting clinical goals and 5. Deploying a Surge Team for Advance Triage or Fast Tract.

Matched MeSH terms: Disasters
Fulltext Devastating urban flooding and dengue outbreak during the COVID-19 pandemic in Pakistan

Junaid Tahir M, Rizwan Siddiqi A, Ullah I, Ahmed A, Dujaili J, Saqlain M

Med J Islam Repub Iran, 2020;34:169.
PMID: 33816368 DOI: 10.47176/mjiri.34.169

Pakistan has recently been overwhelmed by extreme torrential rains, with its most populous city of Karachi experiencing its worst floods in almost a century. Poor flood control and water disposal facilities have led to an immense risk of another dengue outbreak, with multiple cases being reported recently. The enormous accumulation of stagnant water in urban areas is a major source of mosquito breeding and transmission. Historical data has shown the correlation between the number of dengue cases and average rainfall in the region. The monsoon rains have pounded at a time where health authorities are battling to contain the Coronavirus (COVID-19) pandemic. There is a need to implement centralized dengue control strategies to undertake large scale water drainage, sanitation, and disinfection drives in disaster-stricken areas alongside public health awareness programs to combat the after-effects of this natural calamity.

Matched MeSH terms: Disasters
Fulltext Hydrogen Production by Steam Reforming of Ethanol over Nickel Catalysts Supported on Sol Gel Made Alumina: Influence of Calcination Temperature on Supports

Yaakob Z, Bshish A, Ebshish A, Tasirin SM, Alhasan FH

Materials (Basel), 2013 May 30;6(6):2229-2239.
PMID: 28809270 DOI: 10.3390/ma6062229

Selecting a proper support in the catalyst system plays an important role in hydrogen production via ethanol steam reforming. In this study, sol gel made alumina supports prepared for nickel (Ni) catalysts were calcined at different temperatures. A series of (Ni/AlS.G.) catalysts were synthesized by an impregnation procedure. The influence of varying the calcination temperature of the sol gel made supports on catalyst activity was tested in ethanol reforming reaction. The characteristics of the sol gel alumina supports and Ni catalysts were affected by the calcination temperature of the supports. The structure of the sol gel made alumina supports was transformed in the order of γ → (γ + θ) → θ-alumina as the calcination temperature of the supports increased from 600 °C to 1000 °C. Both hydrogen yield and ethanol conversion presented a volcano-shaped behavior with maximum values of 4.3 mol/mol ethanol fed and 99.5%, respectively. The optimum values were exhibited over Ni/AlS.G800 (Ni catalyst supported on sol gel made alumina calcined at 800 °C). The high performance of the Ni/AlS.G800 catalyst may be attributed to the strong interaction of Ni species and sol gel made alumina which lead to high nickel dispersion and small particle size.

Matched MeSH terms: Disasters
Fulltext Medical relief to 2008 Sichuan earthquake, China

Chew BH

Malays Fam Physician, 2008;3(3):170-172.
MyJurnal

The massive 2008 Sichuan earthquake brought unprecedented international humanitarian aid to China. The monstrous damages and casualties aroused all human's sympathy. I took the opportunity to join a Malaysian voluntary medical relief team to Sichuan in June 2008. This essay recounts the immediate events post-earthquake and reports on my experience during the mission.

Matched MeSH terms: Disasters
Fulltext A description of health complaints and treatment among patients visiting medical relief camps at Aceh and Balakot two months post disastery

Adlina, S., Narimah, A.H.H., Mazlin, M.M., Nuraliza, A.S., Hakimi, Z.A., Soe, S.A., et al.

Malaysian Journal of Public Health Medicine, 2006;6(1):51-57.
MyJurnal

This study was conducted to determine the patterns of disease and treatment at two disaster sites. Studies prior to this have shown that all natural disasters are unique in that each affected region of the world have different social, economic and health backgrounds. However, similarities exist among the health effects of different disasters which if recognized can ensure that health and emergency medical relief and limited resources are well managed. This study found that although Aceh and Balakot were two totally different areas with reference to locality and climate it was noticed that the patterns of disease two months post disaster are similar the commonest being respiratory conditions followed by musculoskeletal conditions and gastrointestinal conditions. For the treatment patterns it was observed that the two areas prescribed almost similar, types of medicine mainly for gastrointestinal and respiratory systems. However in Aceh, there were more skin treatment and in Balakot there was more usage of musculoskeletal drugs.

Matched MeSH terms: Disasters
Fulltext Prevalence and perceived severity of post-traumatic stress disorder among flood victims in Kuala Terengganu, Malaysia

Oo, San San, Rahmah Mohd Amin, Aniza Abd Aziz, Thwe Aung, Myat Moe, Rohayah Husain

Malaysian Journal of Public Health Medicine, 2016;16(2):30-40.
MyJurnal

Floods can lead to direct economic and property losses and result not only in physical injuries and deaths but
also in psychological trauma. Post-traumatic stress disorder (PTSD) is a commonly used indicator to evaluate
psychological injuries after disaster. This study aimed to determine the relationship between PTSD prevalence
and related perceived severity of post flood impact by economical, non-economical and flood status severity
domains besides relevant socio-demographic factors according to gender specific analysis. This cross-sectional
study was conducted among community in Kampung Hulu Takir, Kuala Terengganu, Malaysia in 2015 two
weeks after flood. It included a total of 98 males and 110 females aged 18 years and above. Data was
collected by interview-guided questionnaire to determine the prevalence of PTSD. SPSS version 21.0 was used
for analysis of the relationship between socio demographic factors, perceived economic, non-economic and
flood severity with PTSD. Finally chi square test was used to assess the predictors of PTSD according to
gender. The prevalence of PTSD was 9.2% in males and 10.9% in females, giving a total of 10.1%. Significantly
higher prevalence of PTSD was found in severely perceived economic and flood impact categories (33.3% and
23.8% in males; 23.8 % and 37.5% in females) and giving in overall 44.0% and 31.3 % respectively. Effective
PTSD management strategies targeting females post flood victims who severely perceived economically and
nature flood impact should be implemented in order to prevent further consequences of PTSD.

Matched MeSH terms: Disasters
Fulltext Niigata Minamata disease: a revisit

Hasni MJ

Malaysian Journal of Public Health Medicine, 2014;14(1):47-54.
MyJurnal

Minamata disease is a well-known mercury contamination that happened in Japan in 1953. Due to demand during world war, second mercury disaster occurred in Niigata Prefecture in 1965. This is a review on the Niigata Minamata disease based on available documents and local expert opinions on the disaster. The aims of this paper are to record exposure history like the source of mercury in Agano River and specific fish that was associated with the disease. It is for an appraisal of the basic mercury exposure control, particularly to protect Japanese and world population during that time. There was indication that initial exposure limit for mercury was calculated incorrectly, and higher safe dose was applied. This epidemiological study is very useful and significant in comprehend the correct estimation of the human exposure to any hazardous substances.

Matched MeSH terms: Disasters
Fulltext Island health review, progress and the way forward in the Western Pacific region

Zin, Thant, Myint, Than, Htay, Kyaw, Shamsul, B. S.

Malaysian Journal of Public Health Medicine, 2014;14(3):0-0.
MyJurnal

Island health differs from other health care systems, particularly in that there are limited resources and referral faculties available. With globalisation and climate change, island populations have become increasingly vulnerable to natural disasters and global pandemics. This study will identify, explore, compare and report on island health issues facing in the western Pacific, before making appropriate recommendations. A review of selected health indicators in Pacific islands was collected from the World Health Organization (WHO) and other publicly available resources. In the Pacific region, 15 islands saw lower health expenditure (

Matched MeSH terms: Disasters
Fulltext Patterns of health ailments and other health problems among children at a relief camp, Aceh, Indonesia; a two months post tsunami study

Adlina, S., Soe, Soe Aye, Narimah, A.H.H., Nuraliza, A.S.

Malaysian Journal of Public Health Medicine, 2005;5(1):31-37.
MyJurnal

On December 26, 2004, an earthquake triggered a devastating tsunami that caused death and destruction in twelve countries including India, Indonesia, Malaysia, Maldives, Seychelles, Somalia, Sri Lanka and Thailand. One of the authors was a volunteer with FELDA WAJA AMAN MALAYSIA medical relief team that served the Aceh victims from 16th February to 24th February 2005 (8 weeks post tsunami). A study to determine the pattern of health ailments was conducted among children aged 18 years and below based at Seuneubok Camp, 30 km from Banda Aceh. All respondents were from Pulau Aceh and the total number of children seen and examined was 60. About 18% had lost their fathers, 10 % had lost their mothers and 27% had lost one or more of their siblings. 77% suffered some form of health ailments. The common health ailments were diarrhea (61%), respiratory complaints (59%) and fever (20%). About 38 % of preschoolers had loss of appetite and 28% had sleep disturbances. About 35% of the elementary school children suffered from sleep disturbances, 29% of the young adolescents suffered from headaches and 24% had sleep disturbances. Nearly a quarter (24%) of all the children felt fearful and anxious about the disaster. Nevertheless, 56% of the respondents wanted to return back to Pulau Aceh, although 14 % did not want to go back. Interestingly, 73% of the children voiced their gratitude to God for having been saved from death.

Matched MeSH terms: Disasters

Filters

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

External Links