31 research outputs found
The effect of different rutile electrodes on mechanical properties of underwater wet welded AH-36 steel plates
No full textEffect of bond coat and preheat on the microstructure, hardness, and porosity of flame sprayed tungsten carbide coatings
No full textEffect of temperature on the application of Myrmecodia Pendans extract for environmentally friendly corrosion inhibitor
No full textModeling of adsorption isotherms on the addition of an inhibitor Myrmecodia Pendans extract with temperature variation
No full textNovel synthesis of substituted benzylidenecyclohexanone by microwave assisted organic synthesis
No full textWater Molecules in a Carbon Nanotube under an Applied Electric Field at Various Temperatures and Pressures
No full textWater confined in carbon nanotubes (CNTs) under the influence of an electric field exhibits behavior different to that of bulk water. Such behavior is fascinating from a nanoscience point of view and has potential application in nanotechnology. Using molecular dynamics simulations, we investigate the structure of water molecules in an ( 8 , 8 ) CNT, under an electric field at various temperatures and pressures. In the absence of an electric field, water in the CNT has an ordered (solid-like) structure at temperatures of 200 K and 250 K. The solid-like structure of water at these low temperatures exhibits ferroelectric properties. At 300 K, the structure of water is solid-like or disordered (liquid-like), i.e., an unstable structure. This indicates that a melting point occurs at around these conditions. Increasing the pressure to 10 MPa does not change the structure at 300 K. At 350 K, water is completely melted and has only a disordered structure. Under an applied electric field of 1 V/nm, water forms a solid-like structure at all simulation temperatures up to 350 K. This suggests that the electric field induces a phase transition from liquid to ice-nanotube, at temperatures as high as 350 K. The structure of the ice-nanotube under an applied electric field differs from that formed in the absence of an electric field at low temperature. The electrostatic interaction within the ice-nanotube under an electric field is stronger than that in the absence of an electric field
Effect of Plate Thickness and Weld Position on Distortion and Residual Stress of Welded Structural Steel
No full textResidual stresses are generated as a result of non-uniform temperature distribution during welding and particularly cooling process during fabrication of the welded parts. Residual stresses have a major effect on the overall performance of a component in service. In this instant, the residual stress in the form of angular distortion is primarily caused by shrinkage on longitudinal and transversal direction. Several single v-butt joints on structural steel plates of SS400 are investigated by using different plate thickness and welding positions (1G and 3G). GMAW method was used in the welding process. Measurement of residual stress was carried out on a plate with the thickness of 16 mm on longitudinal, transversal and normal direction by using neutron diffraction method. Results showed that the angular distortion of the welded plates increase with the increase of plate thickness. Welding by vertical position (3G position) resulted in a bigger angular distortion compared to flat position (1G position). The distribution of residual stress varied between tension and compression residual stress along welded area with the range of -10 mm to 10 mm. Measurement of residual stress on the longitudinal direction has the greatest value among two other directions.</jats:p
INDONESIA SEBAGAI TRENDSETTER MODERATISME DI ASEAN (Membangun Relasi Akademik antara Islam dan Multikulturalisme)
No full textIndonesia is the largest Muslim majority country in the world. So it makes perfect sense if Islam in Indonesia becomes the centre of civilization on the international scene. However, this achievement is not easy because it demands moral responsibility that Islam indeed shows its moderate and tolerant face. Why is this important? Because the entire Islamic region in the Middle East country, only shows Islam in front of conflict and war. So, the claim that the future of Islamic civilization in the world is in the hands of Indonesia is not a mere figment. For this reason, Indonesian Islam must be able to maintain and simultaneously make efforts to support the preservation of Islam that is friendly to all elements of the nation. For this reason, in this paper, the author describes how strategies so that Islam can become a value base to give birth to attitudes of moderates in the frame of Multicultural Islamic education
Climate and culture Changes, lessons, and challenges
No full textFrom generation to generation over the centuries, people in all parts of the world have developed adaptive social-cultural institutions and strategies of natural resource management based on the intimate relationship they had with their environment. At present, recent global warming is threatening people’s lives. Unfortunately, climate change is a natural phenomenon which is neither easy to observe, nor to predict and anticipate accurately. In many places, local people can no longer rely on earlier experiences and existing socio-cultural institutions to adjust to unprecedented changes. We are in urgent need of specific efforts to re-interpret and enrich our knowledge of this natural phenomenon. However, this is not an easy thing to do. People from all kinds of levels and entities in society are simultaneously the cause and the victims of global warming. The problem becomes even more complicated because of various mutually-affecting dimensions like ethics, politics, power, economics, and justice. These are the ultimate challenges scholars of the social sciences and humanities need to address seriously everywhere in the world, including in Indonesia. This article addresses the arguments of what scholars in the social sciences and humanities could and should do in response to climate change. Promoting a new paradigm and ethics in dealing with climate change is urgent and improvements in approaches and research methodologies are necessary. Learning from experiences gained from the way farmers in Java respond to climate change, the author argues that interdisciplinary research across social and natural sciences, and collaborative work with target groups is a promising and significant step (although scholars will have to face many challenges and constraints)
