275 research outputs found

    Methanol outbreak in the district of Hulu Langat, 2018

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    Introduction: A methanol outbreak occurred in the district of Hulu Langat on 16 September 2018. The Hulu Langat District Health Office received 25 notifications of a suspected methanol poisoning from Kajang and Ampang Hospital. An outbreak investigation was done to determine the source followed by a preventive and control measure. Method: Active case detection was done on cases living quarters and workplaces. Patients were interviewed, and their blood and urine samples were sent for methanol analysis. Samples of suspected alcoholic beverages were also sent for analysis. A suspected case was defined as any person presented with clinical symptoms with a history of consuming alcoholic beverages within five days before symptoms and high anion gap metabolic acidosis. A confirmed case was defined as a suspected case with positive blood and urine methanol. Results: In total, there were 25 suspected cases, of which 12 cases were confirmed. The calculated attack rate was 48%. There were six mortalities (50%) secondary to severe metabolic acidosis. The most common presenting symptom was vomiting (75%) and abdominal pain (41.7%). These cases were linked to consumption of illicitly produced alcohol. Samples of the alcoholic drinks were positive containing high level of methanol. Conclusion: The methanol outbreak in the Hulu Langat was successfully managed. Appropriate control and prevention measures were taken, including health promotion and joint enforcement activities. Steps were taken successfully through collaborations with multiple agencies and cooperation with Selangor Health Departments and the Ministry of Health. Continuous surveillance on the product of liquor, and health promotion are essential to prevent a similar outbreak from happening again in future

    New insights into Se/BiVO4 heterostructure for photoelectrochemical water splitting: a combined experimental and DFT study

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    This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Monoclinic clinobisvanite BiVO4 is one of the most promising materials in the field of solar water splitting due to its band gap and suitable VBM position. We have carried out a comprehensive experimental and periodic density functional theory (DFT) simulations of BiVO4 heterojunction with Selenium (Se/BiVO4), to understand the nature of heterojunction. We have also investigated contribution of Se to higher performance by effecting morphology, light absorption and charge transfer properties in heterojunction. Electronic properties simulations of BiVO4 shows that its VBM and CBM are comprised of O 2p and V 3d orbitals, respectively. The Se/BiVO4 heterojunction has boosted the photocurrent density by three fold from 0.7 to 2.2 mAcm-2 at 1.3 V vs. SCE. The electrochemical impedance and Mott-Schottky analysis consequence favorable charge transfer characteristics which account for the higher performance in Se/BiVO4 compared to the BiVO4 and Se. Finally, spectroscopic, photoelectrochemical and DFT evident that Se makes a direct Z-scheme (band alignments) with BiVO4 where the photoexcited electron of BiVO4 recombine with the VB of Se, consequences electron-hole separation at Se and BiVO4, respectively as a result enhanced photocurrent is obtained.The authors would like to thank the National University of Malaysia for the financial support from grants GUP-2016-089. One of us (H.U) acknowledges the NOTUR supercomputing facilities within the project nn4608

    Diagnosing business incubation for social purpose: a viable system model approach

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    Business incubation is one of the means that promotes the overall business and economic growth of a particular location. However, to date, the role of business incubation as a social innovation, which has the aim to achieve concurrent development of firms, the economy and the society, is not yet understood. Using the systemic approach, specifically the viable system model (VSM) as the framework, the objective of this study is to diagnose the operation of an incubation programme that focuses on supporting business development for social purpose. This study utilized the qualitative methodology and selected an incubator, known as Kompleks Industri Makanan MARA (KIMAR), as the system-in-focus. KIMAR is a halal food industry complex established and operated by Majlis Amanah Rakyat (MARA); the latter a Malaysian government agency that aims to promote the socio-economic empowerment of the indigenous people of Malaysia including the Malays. Data for the diagnosis was collected through interviews with the executives responsible for the incubator operation, as well as the managers or entrepreneurs of the businesses located within it. Our analysis found cohesions among the functions of the incubator and their functionality to manage certain varieties in the environment, although more requisite varieties are needed to manage the high complexity of global halal business development. In managing these varieties, the incubation process receives financial sponsorship and other support from its social-based parent organization. The use of systems perspective highlights operational values of responsibility, long-term perspective as well as effective management of resources that drive the impact of a social incubator, thus enriches the concept of social innovation that typically focuses on the social impact of the outcome

    An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO<sub>2</sub>; A Critical Review

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    Carbon capture and storage (CCS) technologies are the “knight in shining armor” that can save humanity from burnout in the longer term, minimizing damage from CO2 emissions by keeping them out of the atmosphere. Metal–organic frameworks (MOFs) have received a promising career for CO2 capture due to their high porosity, surface area, excellent metal-to-ligand interaction, and good affinity to capture CO2 molecules. On the other hand, Ionic liquids (ILs) as emerging solvents have reported a significant influence on CO2 solubility due to their wide range of tunability in the selection of a variety of cations and anions along with the advantage of nonvolatility, high thermal stability, and nonflammability. The current Review highlights the recent progress and ongoing careers of employing MOFs and ILs in carbon capture technologies before their commercialization on a large scale. A brief overview of CO2 capturing using MOFs and ILs is given under the influence of their possible functionalization to enhance their CO2 separation. Information on the possible integration of MOFs-ILs as a composite system or membrane-based gas separation is also presented in detail. The integration has a high potential to capture CO2 while minimizing the unit operation costs for a stable, efficient, and smooth industrial gas separation operation. Present work attempts to link the chemistry of MOF and IL and their successful hybridization (MOF-IL composite) to process the economics for CO2 capture

    دور العصبية في أحداث الفتنة بقرطبة خلال القرن 5ه-11م: The role of fanaticism in the events of strife in Cordoba during the 5th century AH-11 AD

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    شهدت الأندلس خلال القرن الخامس الهجري الحادي عشر الميلادي، أحداثا تاريخية أطلق عليها المؤرخون "الفتنة القرطبية"، و التي كان لها الأثر على مختلف الأصعدة السياسية و الاجتماعية خاصة بعد نهاية حكم العامريين سنة 399ه - 1009م، حيث دخلت الأندلس خلال هذه الفترة في صراعات مستمرة بين مختلف طبقات المجتمع، و إزداد هذا الصراع بشكل خطير في تهديد الإسلام و المسلمين، حيث نتج عنه تشكل جديد لخارطة بلاد الأندلس بين مختلف العناصر الفاعلة و انزواء مختلف اطياف المجتمع بمناطقهم بسبب الظروف السياسية التي أجبرتهم على ذلك ، و ظهرت بهذه السياسة و قائع و حروب بين مختلف هذه الطوائف العرقية، أدت إلى تكريس حالة اللأمن و اللإستقرار في الأرواح و الممتلكات لمختلف المجموعات السكانية فارتسم صراع عرقي بين الطوائف الأندلسية و البربرية و الصقلبية، تغذيه روح الإنتماء القبلي و التي أصبحت العامل الرئيسي في تحريك أحداث الفتنة و القائمة على تحديد العلاقة بين شرائح المجتمع الأندلسي في إطار عرقي قبلي.During the fifth century AH (eleventh century AD), Andalusia witnessed historical events that historians called the “Fitna of al-Andalus”, which had an impact on various political and social levels, especially after the end of the rule of the Amiriden in 399 AH-1009 AD. During this period, Andalusia entered into ongoing conflicts between different classes of society. Moreover, this conflict increased in a dangerous way, threatening Islam and Muslims. It resulted in a new formation of political features for the map of Andalusia, distributed among the various actors from the social groups within their areas due to the political conditions that forced them to do so—with this policy, incidents and wars emerged between the various ethnic groups, perpetuating a state of insecurity and instability in the lives and properties of the various population groups. Ethnic conflict has been established between the Andalusian, Barbarian, and Ṣaqālibah communities, fueled by the spirit of tribal affiliation, which has become the main factor in the movement of strife and the determination of the relationship between the segments of Andalusian society within a tribal framework. In this study, we follow the descriptive and analytical methods of the course of events to highlight the goal of the tribal dimension and its role in feeding the nervous conflict in Andalusia, which destroyed Islamic civilization

    An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO<sub>2</sub>; A Critical Review

    No full text
    Carbon capture and storage (CCS) technologies are the “knight in shining armor” that can save humanity from burnout in the longer term, minimizing damage from CO2 emissions by keeping them out of the atmosphere. Metal–organic frameworks (MOFs) have received a promising career for CO2 capture due to their high porosity, surface area, excellent metal-to-ligand interaction, and good affinity to capture CO2 molecules. On the other hand, Ionic liquids (ILs) as emerging solvents have reported a significant influence on CO2 solubility due to their wide range of tunability in the selection of a variety of cations and anions along with the advantage of nonvolatility, high thermal stability, and nonflammability. The current Review highlights the recent progress and ongoing careers of employing MOFs and ILs in carbon capture technologies before their commercialization on a large scale. A brief overview of CO2 capturing using MOFs and ILs is given under the influence of their possible functionalization to enhance their CO2 separation. Information on the possible integration of MOFs-ILs as a composite system or membrane-based gas separation is also presented in detail. The integration has a high potential to capture CO2 while minimizing the unit operation costs for a stable, efficient, and smooth industrial gas separation operation. Present work attempts to link the chemistry of MOF and IL and their successful hybridization (MOF-IL composite) to process the economics for CO2 capture

    Role of Intercropping in Sustainable Insect-Pest Management: A Review

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    Reduced soil fertility and rising pest and disease pressures are contributing to the already serious problem of global food insecurity. Monoculture is the most labour and resource-intensive form of crop production around the globe. Unfortunately, monocultures are more vulnerable to pests, diseases, and weeds, so the expansion of this system is accompanied by a host of biological issues. Negative effects on the environment, human health, and ecosystem stability are all associated with monocropping because it relies so heavily on the use of chemical plant protection products of all generations of pesticides. Although crop production strategies are important for overall enhancement in production, the intercropping can help farmers in attaining raised economic returns by taking multiple crops in a single season. Intercropping is an alternative strategy for improved resource use efficiency, environmental safety, and sustainable pest management without the use of chemical pesticides that can help mitigate these risks. Intercropping (two or more crop species coexisting) is a cultural practice in pest management that reduces insect pests by increasing ecosystem diversity. Intercropping and planting crops that kill or repel pests, attract natural enemies, or have antibacterial effects can reduce disease and pest damage and pesticide use. Intercropping, where crops grow between main crops, reduces the likelihood of pest infestation. Intercropping is a potential pest management practice because it diversifies crops in an agro-ecosystem to reduce insect populations and attacks. Intercropping relies on a deep understanding of insect ecology and crop traits. Intercropping can be used alone or in combination with host-plant resistance and biological control. Intercropping ensures crop yield stability, protects against crop failure, improves soil fertility, increases soil conservation, and reduces pesticide use, minimizing agriculture's environmental impact. The aim is to define the role and importance of intercropping as a strategy in crop pest management and as a boost for crop production vis-à-vis soil fertility
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