Pengaruh Serat Alami terhadap Tingkat Kepadatan dan Intensitaskeretakan Tanah Lunak pada Siklus Basah Kering

The use of natural fibers as a reinforcement material in clay becomes an alternative choice of materials widely used in the early decades of soil improvement techniques. This practice is to improve soil strength and resistance to cracks. This preliminary practice was done because the cost of procurement is relatively low cost and also available in almost all areas of Indonesia. Modification of the use of natural fiber with other materials such as synthetic fiber materials has begun to do a lot at this time. The objectives of this research are: (1) Analyzing the physical and mechanical of soft soil mineralogy characteristics, (2) Analyzing the soft soil mechanical behavior by reinforcing the Palm oil fiber (POF) of the empty fruit bunch of palm oil whether it can increase soft soil capacity, (3) shrinkage and crack intensity factor (CIF) of soft soil in wet-dry cycles. The results showed that the addition of natural fiber on soft soil tends to reduce the level of soil density and increase the water content of the soil, although not too large. The effect is only about max 2.35% on 2% fiber content. While the swelling potential and shrinkageof the soils can be reduced by fiber reinforcement. In the crack potential test showed a substantial reduction of crack intensity factor, whereas the addition of fibers in the soft soil can reduce cracks up to 444%. This shows that the fiber-soil has great ability in resisting the tensile strength of the soil-fiber interface due to the adhesion properties so that the soil is not easily cracke

Outer rotor wound field flux switching machine for In-wheel direct drive application

Nowadays the flux switching machines offer pivotal role in high speed applications. The flux sources (field excitation coil and armature winding or permanent magnet) are confined to the stator leaving rotor completely passive, and thus making the flux switching machine (FSM) more suitable for industrial applications. This paper emphasizes salient rotor pole and non-overlapping windings embedded in electrical machine design possess some pertinent features such as reduced copper losses, low-cost, and usage in high speed applications. The proposed design is analyzed for coil test analysis and flux linkage and torque. On the basis of the analysis performed, it is clear that 12-slot/13-pole has low cogging torque, high flux linkage, and maximum torque, compared with other topologies of outer rotor field excitation FSM. A deterministic optimization technique is adopted to enhance the performance of 12-slot/13-pole design. Further, finite element analysis (FEA) results are verified through Global Reluctance Network (GRN) methodology, which show close resemblance with error less than 1.2%. Hence, it validates the proposed design for outer rotor field excitation FSM direct drive application. The proposed design for hybrid electric vehicle torque characteristic is compared with existing interior permanent magnet synchronous machine (IPMSM) and 6-slot/7-pole wound field flux switching machine (WFFSM)

Pengaruh Serat Alami Terhadap Tingkat Kepadatan dan Intensitaskeretakan Tanah Lunak Pada Siklus Basah Kering

The use of natural fibers as a reinforcement material in clay becomes an alternative choice of materials widely used in the early decades of soil improvement techniques. This practice is to improve soil strength and resistance to cracks. This preliminary practice was done because the cost of procurement is relatively low cost and also available in almost all areas of Indonesia. Modification of the use of natural fiber with other materials such as synthetic fiber materials has begun to do a lot at this time. The objectives of this research are: (1) Analyzing the physical and mechanical of soft soil mineralogy characteristics, (2) Analyzing the soft soil mechanical behavior by reinforcing  the Palm oil  fiber  (POF) of  the empty fruit bunch of palm oil whether it can increase soft soil capacity, (3) shrinkage and crack intensity factor (CIF) of soft soil in wet-dry cycles. The results showed that the addition of natural fiber on soft soil tends to reduce the level of soil density and increase the water content of the soil, although not too large. The effect is only about max 2.35% on 2% fiber content. While the swelling potential and shrinkageof the soils can be reduced by fiber reinforcement. In the crack potential test showed a substantial reduction of  crack intensity factor, whereas the addition of fibers in the soft soil can reduce cracks up to 444%. This shows that the fiber-soil has great ability in resisting the tensile strength of the soil-fiber interface due to the adhesion properties so that the soil is not easily cracke

Decompression illness secondary to occupational diving : recommended management based current legistation and practice in Malaysia.

Occupational divers are exposed to hazards which contribute to the risk of developing decompression illnesses (DCI). DCI consists of Type I decompression sickness (DCS), Type II DCS and arterial gas embolism (AGE), developed from formation of bubbles in the tissues or circulation as a result of inadequate elimination of inert gas (nitrogen) after a dive. In Malaysia, DCI is one of the significant contributions to mortality and permanent residual morbidity in diving accidents. This is a case of a diver who suffered from Type II DCS with neurological complications due to an occupational diving activity. This article mentions the clinical management of the case and makes several recommendations based on current legislations and practise implemented in Malaysia in order to educate medical and health practitioners on the current management of DCI from the occupational perspective. By following these recommendations, hopefully diving accidents mainly DCI and its sequalae among occupational divers can be minimized and prevented, while divers who become injured receive the proper compensation for their disabilities

The Effect of Strategic Collaboration Approach on the National Educational Standards Achievement and Service Quality in Basic Education at Local Government in Indonesia

This study measures the effect of strategic collaboration approach on the Educational National Standards (ENS) and the basic education service quality at local government in Indonesia The research used a quantitative method. We used 489 teachers and 271 school principals in primary and secondary schools. The data were collected through questionnaires for the quantitative data and analyze using a structural model. The research findings confirm strategic collaboration approach has a positive and significant effect on ENS and basic education service quality. Further, the educational national standards have a positive and significant effect on the basic education service. In this study, we found that the strategic collaboration approach may employ in basic education to perform basic education performance. We argue that to better implementation of strategic collaboration approach, the greater improvement of the achievement of ENS and basic education service quality at local government in Indonesia

Entities filtering technique for information extraction in engineering drawing files

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Developing the strategic collaboration model in basic education

The strategic collaboration approach has recognized widely can overcome the complexities and challenges of teaching and learning programs and achieve sustainable education quality improvement. This study analyzed the development of a strategic collaboration approach in education at local government in Indonesia. The mixed-method analyzed the correlation of the strategic collaboration approach in education. Data gained through the questionnaire for quantitative data and in-depth interview with the key informants for qualitative data. The school collaboration networks, school strategic leadership, teacher strategic alliances capacity, school culture innovation, and school committee collaboration. Besides, the education service innovation as the core objective of the element education strategic collaboration has determined by two factors consist of school collaborative strategic planning and strategic collaboration development in education. Research samples were teachers, school leaders, and school supervisors and also the personnel of the education agency of Banggai Regency, Central Sulawesi, Indonesia. The research samples selected by using a stratified random sampling technique. There were 521 selected respondents and 15 key informants. The questionnaires for quantitative model are scaled on a 6 point-Likert scale ranged from strongly agree to strongly disagree. The strategic collaboration development model viewed as a better approach to achieve education quality improvement, creating a service innovation, and quality control in education

Diving accidents treated at a military hospital-based recompression chamber facility in Peninsular Malaysia.

This paper describes the pattern of diving accidents treated in a military hospital-based recompression chamber facility in Peninsular Malaysia. A retrospective study was carried out to utilize secondary data from the respective hospital medical records from 1st January 1996 to 31st December 2004. A total of 179 cases categorized as diving accidents received treatment with an average of 20 cases per year. Out of 179 cases, 96.3% (n=173) received recompression treatment. Majority were males (93.3%), civilians (87.2%) and non-Malaysian citizens (59.2%). Commercial diving activities contributed the highest percentage of diving accidents (48.0%), followed by recreational (39.2%) and military (12.8%). Diving accidents due to commercial diving (n=86) were mainly contributed by underwater logging activities (87.2%). The most common cases sustained were decompression illness (DCI) (96.1%). Underwater logging and recreational diving activities which contribute to a significant number of diving accidents must be closely monitored. Notification, centralised data registration, medical surveillance as well as legislations related to diving activities in Malaysia are essential to ensure adequate monitoring of diving accidents in the future

IN VITRO ANTI-ACETYL CHOLINESTERASE AND ANTIOXIDANT ACTIVITY OF SELECTED MALAYSIAN PLANTS

Objective: The aim of this study is to discover and identify the potential plant extracts that could be vital against Alzheimer's disease (AD). It is a neurodegenerative disease affecting the brain. The most promising target for the symptomatic treatment and slowing of AD progression is cholinesterase inhibitors from plants. Methods: To evaluate the antioxidant and anti-acetylcholinesterase (AChEI) activities leaves and roots were macerated and refluxed with ethanol extracts, from four medicinal plants, namely; C.asiatica, M.pudica, C.pumila, and L.camara. DPPH and β-carotene assays were used to determine antioxidant activity; whereas Ellman's colorimetric method was adopted to quantify AChEI activity. Results: The refluxed ethanol extract of M.pudica leaves exhibited the highest AChEI activity (IC50 = 0.047 mg/ml) and high antioxidant activity (β-carotene; IC50 = 0.14 mg/ml and DPPH; IC50 = 0.012 mg/ml). Conclusion: Results reveal that all plant extracts studied possess anti-oxidant properties. Most potent extracts could be a lead to novel antioxidants and acetyl cholinesterase inhibitors, for the treatment of AD. Keywords; Alzheimer's disease (AD); Acetylcholinesterase activity; Antioxidant activity; β-carotene; DPPH; Medicinal plants

The effect of holmium on microstructure and mechanical properties of light metal alloy

The thesis project investigates the effect of Holmium addition on the microstructure and mechanical properties of cast ZRE1 magnesium alloy. In the advancement of automotive and aerospace industries, the next generation of light metal alloy is magnesium due to its manufacturing abilities and lightweight material. The main limitation of Mg alloys is the ability to improve its mechanical properties. Rare earth elements were used as alloying elements for improving the mechanical properties and producing a new Mg-RE alloy with modified structure and strength. In this studies, it demonstrates the addition of RE at specific amount, which could be considered as main alloy element that may lead to extend limitation of RE application. The amount of Holmium (Ho) at 0.2, 0.4 and 0.6 wt. % were added separately to ZRE1 magnesium alloy. The Optical Microsope, FESEM coupled with EDX, and XRD were used to investigate the microstructure and mechanical properties, including tensile and hardness tests. The results showed that the Ho content at 0.2wt. % increased the ultimate tensile strength and yield strength compared to others Ho composition. Finally, the hardness value was increased and the additive had a significant improvement of mechanical properties, thus the ZRE1 magnesium alloy has been improved with Holmium addition