Thermal properties of Malaysian cohesive soils

The thermal properties of soils surrounding energy piles are required for the efficient and optimal design of shallow geothermal energy pile systems. In this study, the thermal conductivity, thermal resistivity and volumetric specific heat of two types of Malaysian cohesive soil were obtained through a series of laboratory experiments using a thermal needle probe. This study was conducted to determine the effect of moisture content on the thermal conductivity, thermal resistivity and volumetric specific heat values of the cohesive soil at a given value of soil density. For soils with low to medium moisture content, a linear increase in the thermal conductivity and volumetric heat capacity was observed as the moisture content gradually increased, while the thermal resistivity values of the soil had decreased. Meanwhile, for soils with high moisture content, the thermal conductivity was observed to have decreased, and a marked increase was seen in the thermal resistivity. This is due to the disruption of the thermal flow continuity in the soil matrix with the presence of moisture in the soil which adversely affects the thermal conductivity

Pengaruh Metode Bermain Peran Terhadap Keberanian engungkapkan Bahasa Pada Anak Kelompok B Di Tk Pertiwi Kahuman I Polanharjo KlatenTahun Ajaran 2016/2017

The research on group B TK Pertiwi Kahuman I was motivated by the courage of children in expressing the diverse guages. There was a child who was shy when speaking and answering questions from the teacher. Child’s interaction is still lacking of to other chidren and the courage of children was still passive. The purpose of this study was to determine the effect of a method of role playing for the courage express language on the children in group B at TK Pertiwi Kahuman I Polanharjo Klaten Academic Year 2016/2017. The research was design experiment research with one group pretest–posttest. The subject in this study was all student of group B at TK Pertiwi Kahuman I, 16 children. The method of data collection was observation, documentation, interview and test. Technique of data analysis used t-test analysis. The results data indicated that t calculate ≤ table-t 24.706 ≤ -1.753 furthurmore Ho was rejected and Ha was aceepted. It can be inferred that there is the influence of role play method to encourage the express language in the children the group B at Tk Pertiwi Kahuman I Polanharjo Klaten Academic Year 2016/2017.Keyword: Role Play Method, and The Encourage of Language Expres

Performance of concrete grout under aggressive chloride environment in Sabah

Service life of existing reinforced concrete (RC) structures in coastal towns of Sabah has been affected very much. Concrete crack, spalling of concrete cover and reinforcement rusting of RC buildings are seen even within 5 years of construction in Sabah. Hence, in this study a new mix design of concrete grout was developed using locally available materials and investigated under two curing conditions and workability, compressive strength, Accelerated Mortar Bar Test (AMBT), water absorption, volume of permeable voids (VPV), Sorptivity and 90-days salt ponding test were conducted. The compressive strength of concrete grout at the age 90 days was found to be 44.49 N/mm2 under water curing. It was observed that the percentage of mortar bar length change was below 1% for developed concrete grout. The water absorption of the concrete grout was in between the range of 0.88 % to 3.60 % under two different curing up to the age 90 days. It was also observed that the VPV of concrete was in the range of 0 % to 9.75 and 2.44% to 13.05% under water curing and site curing respectively. It was found that the Sorptivity of the concrete grout under water curing at the age of 28 days is 0.211mm/√min and at the age 90 day are 0.067 mm/√min. The chloride content decreased greatly, 90% after a depth of 15 mm. It was noticed that the site cured samples showed higher chloride contents near surface compared to water cured samples. This investigation suggested that the developed mix design of concrete grout using locally available construction materials can be used for crack repairing of existing RC structures in Sabah

Fracture toughness of epoxy adhesive containing dual-capsules self-healing system

Structural polymeric adhesive such as the two-part epoxy adhesive, offers many benefits in comparison to the more conventional joining methods, for instance welding and mechanical fastening. Due to epoxy's thermosetting nature, when polymerisation occur, a highly crosslinked material with superior mechanical properties will be produced. However, due to this crosslinked molecular structure they are also known to be brittle, and once crack initiated in the material, there will be no mechanism to slows down and inhibit their propagation. From the previous literatures, it was found that, rubbery second-phase inclusions can significantly increase the toughness of this thermosetting polymeric adhesive. In this study, second-phase inclusions in the form of dual-capsule self-healing system were dispersed into a commercially available epoxy adhesive to improve its mechanical properties. Tapered double cantilever beam (TDCB) specimens were used to access the Mode-I fracture toughness of the adhesive. And, it was found that, by incorporating these microcapsules an increment of as high as 80% of its baseline Mode-I fracture toughness (GIC) can be obtained. Apart from that, recovery of fracture toughness of up to 74% after full fracture can be achieved due to the self-healing characteristic of these microcapsules. Scanning electron microscopy (SEM) was used to analyse the fracture surface of the joints. The self-healing adhesives demonstrate recovery of both cohesion and adhesion properties with room temperature healing

Healing past violence: traumatic assumptions and therapeutic interventions in war and reconciliation

Since South Africa's truth and reconciliation commission (TRC), a therapeutic moral order has become one of the dominant frameworks within which states attempt to deal with a legacy of violent conflict. As a consequence, the grammar of trauma, suffering, repression, denial, closure, truth-revelation, and catharsis has become almost axiomatic to postconflict state-building. The rise of the postconflict therapeutic framework is tied, ineluctably, to the global proliferation of amnesty agreements. This article examines the emergence and application of two therapeutic truisms that have gained political credence in postconflict contexts since the work of the TRC. The first of these is that war-torn societies are traumatized and require therapeutic management if conflict is to be ameliorated. The second, and related truism, is that one of the tasks of the postconflict state is to attend to the psychiatric health of its citizens and the nation as a whole. The article shows how, and to what effect, these truisms coalesce powerfully at the site of postconflict national reconciliation processes. It argues that the discourse of therapy provides a radically new mode of state legitimation. It is the language through which new state institutions, primarily truth commissions, attempt to acknowledge suffering, ameliorate trauma and simultaneously found political legitimacy. The article concludes by suggesting that, on a therapeutic understanding, postconflict processes of dealing with past violence justify nascent political orders on new grounds: not just because they can forcibly suppress conflict, or deliver justice and protect rights, but because they can cure people of the pathologies that are a potential cause of resurgent violenc