The ultimate bearing capacity is an essential requirement in design quantification for shallow foundations especially
for structures built on large rock masses. In many engineering projects, structures built on foundation of heavily jointed
rock masses may face issues such as instability and sudden catastrophic rock slope failure. Determination of the ultimate
bearing capacity (Qult) of foundations resting on rock mass has traditionally been determined by employing several
strength criterions. One of the accepted and widely implemented methods is to use the Hoek-Brown failure criterion 2002,
where the required parameters are determined from a rock mass classification system, Geological Strength Index (GSI).
This paper defines an assessment for ultimate bearing capacity (Qult) based on the Hoek-Brown failure criterion 2002
for a granitic rock slope beneath a 20 m diameter concrete water tank at Bandar Mahkota Cheras, Kajang, Selangor.
Based on the Hoek-Brown failure criterion 2002, the ultimate bearing capacity (Qult) of rock mass was 7.91 MPa. The
actual stress acting on the rock mass was 0.32 MPa. The assessment showed that the rock mass is safe since the ultimate
bearing capacity (Qult) is 24.7 times higher than the actual stress acting on the rock mass.
An attempt was made in this investigation to trace the dynamic response of roller compacted concrete dam, which is subjected to horizontal ground motion by considering the interactions between flexible foundations, reservoir water, and bottom reservoir sediments. Two-dimensional finiteinfinite element was used for the non-linear elasto-plastic dynamic analysis. In this analysis, special emphasis was given to the non-linear behaviour of discontinuities along RCC dam-bedding rock foundation which was modelled by thin layer interface. Analysis was first carried out under static loading (self-weight and hydrostatic pressure), and this this was followed by seismic analysis, with hydrodynamic pressure effect in a dam-reservoir system. Based on the numerical dynamic results, it is concluded that the bottom reservoir sediment has significant effect on the seismic response of the RCC gravity dam. Moreover, there is a redistribution of the stresses at thin layer interface with significant stresses reduction, which is resulted from the release of energy through different modes of deformation in this region.
An understanding of the pathogenesis of glaucoma is one of the foundations in glaucoma management. A number of theories have been presented to explain glaucomatous neural degeneration. The vascular theory attempts to explain the causation of glaucoma on the basis of vasogenic factors and altered he-modynamics in the body; however, this theory remains controversial. There are proponents for and against the role played by vascular factors in the development of glaucomatous optic nerve degeneration. This review aims to analyze the various studies performed to provide evidence for and against the vascular theory of glaucoma. It also affirms the need to undertake further studies regarding the path-ogenesis of glaucoma and integrate them into our management strategies. The literature search for this systemic analysis was performed using search engines, such as PubMed, The Virtual Library of the Ministry of Health Malaysia, Google Scholar, and ClinicalKey.
This paper examines the safety and efficacy of non-viral gene transfer in cartilage tissue engineering (TE) from the worldview of Islam. The first clinical trial treating adenosine deaminase deficient patients conducted in 1990 has triggered the development of gene transfer technology. The potential of gene transfer is further explored in TE field with the hope that it could prosper the regenerative medicine application. However, ethical issues become important when it comes to application of new treatment modalities, primarily in gene transfer because of genetic modification influences the basis of life - the DNA. Besides ethical issue, the application of gene transfer in treating diseases also attract views from religious context. The questions on the techniques to administer the gene in human, social acceptance of genetically modified cell and adverse effects from it are still debatable and unresolved. Apart from that dilemma, both safety and efficacy issues are raised due to the scientific uncertainty and social perception of the technology. Despite countless number of encouraging findings and recommendations by the proponents of
the technology, gene transfer is currently available only in the research setting. The established guidelines are used to complement and provide the necessary foundations in discussing the aspects involved in the incorporation of gene transfer with cartilage TE. Relevant Islamic input are identified and aligned to those particular guidelines. It is hoped that the integration of Islamic inputs in the existing guidelines could suggest the safest approach in treating cartilage degenerative disease through gene transfer and TE.
The provision of renal replacement therapy (RRT) in developing economies is limited by lack of financial and other resources. There are no national reimbursement policies for RRT in many countries in Asia. The Southeast Asia countries of Singapore, Malaysia, Thailand, and Indonesia have adopted a strategy of encouraging public-private partnerships to increase the RRT rates in their respective countries. The private organizations include both for-profit and philanthropic bodies. The latter raise funds from ordinary citizens, corporations, and faith-based groups, as well as receive subsidies from the government to support RRT for patients in need. The kidney foundations of these countries play a leadership role in this public-private partnership. Many of the private organizations that support RRT are providers of treatment in addition to offering financial assistance to patients, with hemodialysis being the most frequently supported modality. Public-private partnership in funding RRT is sustainable over the long term with proper organization and facilitated by support from the government.