34 research outputs found
Industrial attachment with Singapore Technologies Kinetics
No full textThe author was attached to Singapore Technologies Kinetics at Jalan Boon Lay 24-weeks Industrial Attachment Programme. During the attachment, the author was involved in the Smart bus project which is the installation of a Data logger to assist SBS transit in the daily fleet management and the collection of crash data in the event of a crash
Critical Factors Affecting Productivity for Table Form System in the Malaysian Construction Industry
No full textAssessment of plant height and trunk diameter of oil palm as a sole function of soil textural grains (sand, clay, and silt)
No full textPlant height is a key indicator of healthy growth. Given the role of soil texture in productivity, the effects of sand, silt, and clay on the height and diameter of oil palm (OP) were investigated. In the four OP plantations, measurements of total and trunk heights and trunk diameters were taken from two OP clusters: tall and short. A Pro II Laser Rangefinder (ML921) was used to measure heights. Soil samples were subjected to particle distribution analysis using the pipette method. The data were processed using RStudio software. The t-test confirmed a significant difference in the heights between the clusters in all plantations, implying the accuracy of clustering. For total height, the tall cluster was greater than the short by 24.75%, 23.89%, 27.17%, and 27.51% in OP1, OP2, OP3, and OP4, respectively. Regression analysis established that soil texture accounted for 65.3%, 46.8%, 74.4%, and 69.6% of the total OP height in the fields, respectively. Sand showed a strong to moderate positive correlation with total and trunk heights, and a moderate negative correlation with trunk diameter. The clay correlated inconsistently with trunk diameter, while silt in the 0–30 cm layer showed a strong to moderate negative correlation with height. In conclusion, soil texture profoundly influences oil palm height, with sand grains exerting the greatest positive effect. Typical clay soil should be avoided during oil palm site selection, and the fields should be well-leveled to avoid erosion, which results in continuous clay deposition on the bottom slope
ChemInform Abstract: Enantioselective Organocatalytic Fluorination Using Organofluoro Nucleophiles
No full textClimate variability and water stress effects on oil palm (Elaies guineensis Jacq.) productivity in Malaysia
No full textOil palm is a key pillar of Malaysia’s socio-economic development, contributing to the nation’s economic stability, and is also a major driver of the global oil industry. However, climate variability has progressively reduced the productivity of oil palm (OP) by subjecting it to water stress through inadequate and irregular rainfall, prolonged dry spells, and elevated temperatures. This article reviews past literature and provides useful insights into the effects of climate elements and the physiological and agronomic effects of water stress on OP. Water stress impairs the physiological and metabolic functions of OP, particularly stomatal conductance, leaf water potential, proline synthesis, sex differentiation, and water use efficiency. These combined effects diminish the biomass and yield of OP. This review also highlights the temporal variability of climate and identifies the role of various soil properties related to water stress. It presents climate projections threatening OP sustainability and presents possible solutions. Additionally, the specific fraction of plantavailable water necessary for triggering water stress remains under-researched. The relationship between various physiological and genetic mechanisms that control stomatal response during water stress is unclear. The efficiencies of various irrigation approaches and water conservation measures must also be re-evaluated based on climate predictions
Assessment of plant height and trunk diameter of oil palm as a sole function of soil textural grains (sand, silt and clay)
No full textPlant height is a key indicator of healthy growth. Given the role of soil texture in productivity, the effects of sand, silt, and clay on the height and diameter of oil palm (OP) were investigated. In the four OP plantations, measurements of total and trunk heights and trunk diameters were taken fromtwo OP clusters: tall and short. A Pro II Laser Rangefinder (ML921) was used to measure heights. Soil samples were subjected to particle distribution analysis using the pipette method. The data were processed using RStudio software. The t-test confirmed a significant difference in the heights between the clusters in all plantations, implying the accuracy of clustering. For total height, the tall cluster was greater than the short by 24.75%, 23.89%, 27.17%, and 27.51% in OP1, OP2, OP3, and OP4, respectively. Regression analysis established that soil texture accounted for 65.3%, 46.8%, 74.4%, and 69.6% of the total OP height in the fields, respectively. Sand showed a strong to moderate positive correlation with total and trunk heights, and a moderate negative correlation with trunk diameter. The clay correlated inconsistently with trunk diameter, while silt in the 0–30 cm layer showed a strong to moderate negative correlation with height. In conclusion, soil texture profoundly influences oil palm height, with sand grains exerting the greatest positive effect. Typical clay soil should be avoided during oil palm site selection, and the fields should be well-leveled to avoid erosion, which results in continuous clay deposition on the bottom slope
Resetting the epigenome for heart regeneration
No full textIn contrast to adults, recent evidence suggests that neonatal mice are able to regenerate following cardiac injury. This regenerative capacity is reliant on robust induction of cardiomyocyte proliferation, which is required for faithful regeneration of the heart following injury. However, cardiac regenerative potential is lost as cardiomyocytes mature and permanently withdraw from the cell cycle shortly after birth. Recently, a handful of factors responsible for the regenerative disparity between the adult and neonatal heart have been identified, but the proliferative response of adult cardiomyocytes following modulation of these factors rarely reaches neonatal levels. The inefficient re-induction of proliferation in adult cardiomyocytes may be due to the epigenetic landscape, which drastically changes during cardiac development and maturation. In this review, we provide an overview of the role of epigenetic modifiers in developmental processes related to cardiac regeneration. We propose an epigenetic framework for heart regeneration whereby adult cardiomyocyte identity requires resetting to a neonatal-like state to facilitate cell cycle re-entry and regeneration following cardiac injury
Enantioselective organocatalytic fluorination using organofluoro nucleophiles
No full text10.1039/c1ob05840aOrganic and Biomolecular Chemistry103479-48
