Asphalt 60/70 Penetration Analysis of AC/BC Mixture With the Addition of Ethylene Vinyl Acetate (EVA) As Asphalt Raw Material

This study was conducted to determine how much influence EVA (Ethylene Vinyl Acetate) added to Laston AC-BC has on Marshall characteristic values. The Marshall test carried out will produce stability values at the optimum asphalt conditions that meet the 2018 Highways specifications. The stability value will be used to analyze changes in the characteristics of the Laston AC-BC (Asphalt Concrate – Binder Course) mixture after adding a mixture of EVA (Ethylene Vinyl Acetate) . To determine an aggregate gradation in the AC-BC mixed layer, coarse aggregate is used in the form of crushed stone with a maximum size of ” while for fine aggregate it is a mixture of crushed stone, stone ash and sand. The additive or modifier used is EVA (Ethylene Vinyl Acetate) polymer. Next, to obtain good asphalt concrete, the gradation of the aggregate must meet the general specifications of Bina Marga 2018 which have been determined through SNI-ASTM-C136-2012. In making the test object, ± 1200 gram of aggregate and asphalt are needed so that the specified height of the test object will be produced. Through the analysis of the aggregate sieve, the weight of the aggregate required for the test object can be calculated. Modification of asphalt with EVA aims to determine the stiffness and properties of asphalt in resisting loading with a certain penetration value so as to produce a Penetration Index value which will affect the characteristics of asphalt against weather changes. Research and knowledge related to the addition of a mixture of EVA (Ethylene Vinyl Acetate) to asphalt can be further developed so that it can be implemented on types of road pavements with higher traffic density conditions

Faktor Penentu Nilai Tambah Bruto pada Konsumsi Wisatawan dan Penyerapan Tenaga Kerja di Indonesia

The tourism industry has grown to become one of the largest industries in the world. Indonesiantourism can flourish, generating income for the state and also employment opportunities. Thepurpose of this study is to calculate the impact of the consumption of tourists jointly to the grossvalue added and employment in Indonesia in the period 2008-2012.This study used secondary,secondary data obtained from the data in Table input output (IO) issued by BPS form 2005updated IO data 2008. The impact of the consumption of tourists, the largest is the restaurantand hotel. The impact of tourist consumption can create jobs in the period 2008 - 2012approximately three million people per year

Zinc-oxide nanoparticle-based saturable absorber deposited by simple evaporation technique for Q-switched fiber laser

A Q-switched erbium-doped fiber laser (EDFL) incorporating zinc-oxide (ZnO) nanoparticles-based saturable absorber (SA) is proposed and demonstrated. To form the SA, the ZnO nanoparticles, which are originally in the powder form, are first dissolved in ethanol and subsequently deposited onto the surface of fiber ferrule by using the adhesion effect with the evaporation technique. By integrating the ZnO nanoparticle-based SA into a laser cavity of an EDFL, a self-started and stable Q-switching is achieved at a low threshold power of 20.24 mW. As the pump power is increased, the pulse repetition rate is tunable from 10.34 kHz to 25.59 kHz while pulse duration decreases from 21.39 μs to 3.65 μs. Additionally, this Q-switched laser has a maximum energy per pulse of 19.34 nJ and an average output power of 0.46 mW. These results indicate the feasibility and functionality of the ZnO nanoparticles-based SA for Q-switched generation, which offers the flexibility and easy integration of the SA into a ring laser cavity

Medical identifier technology for pilgrims during the Hajj season

Hajj is known as one of the Muslim’s ritual duties as described in the Five Pillar of Islam. Since many people gather in one place, it tends to create many problems, especially in crowded environment, such as flood, fire and stampedes. It is not included with died pilgrims that always happen every year, because of age factor and unfortunate incident, as well as lost pilgrims that always been reported each hour during Hajj. Without papers that showing their exact location as well as contact number, yet with the problems of communication (language barriers), always puts a tremendous pressure on the security officers who taking care of pilgrims. This paper seeks to provide a comprehensive review about the potential technology and design which suitable to be implemented as a medical identifier. This medical device will be built into a new design of bracelet, due to be worn by pilgrims. This proposed bracelet is specifically designated for them, due to replace the existing bracelet worn by pilgrims as identification tag. It is equipped with additional function of technology, which capable to monitor the pilgrim’s health condition, as well as pilgrims’ data information

Isolation and Propagation of Laboratory Strains and a Novel Flea-Derived Field Strain of Wolbachia in Tick Cell Lines

Wolbachia are intracellular endosymbionts of several invertebrate taxa, including insects and nematodes. Although Wolbachia DNA has been detected in ticks, its presence is generally associated with parasitism by insects. To determine whether or not Wolbachia can infect and grow in tick cells, cell lines from three tick species, Ixodes scapularis, Ixodes ricinus and Rhipicephalus microplus, were inoculated with Wolbachia strains wStri and wAlbB isolated from mosquito cell lines. Homogenates prepared from fleas collected from cats in Malaysia were inoculated into an I. scapularis cell line. Bacterial growth and identity were monitored by microscopy and PCR amplification and sequencing of fragments of Wolbachia genes. The wStri strain infected Ixodes spp. cells and was maintained through 29 passages. The wAlbB strain successfully infected Ixodes spp. and R. microplus cells and was maintained through 2–5 passages. A novel strain of Wolbachia belonging to the supergroup F, designated wCfeF, was isolated in I. scapularis cells from a pool of Ctenocephalides sp. cat fleas and maintained in vitro through two passages over nine months. This is the first confirmed isolation of a Wolbachia strain from a flea and the first isolation of any Wolbachia strain outside the “pandemic” A and B supergroups. The study demonstrates that tick cells can host multiple Wolbachia strains, and can be added to panels of insect cell lines to improve success rates in isolation of field strains of Wolbachia

Establishment of 3D-printed child manikins using anthropometric data of 6- and 10-year-old ASEAN children

The New Car Assessment Programme for Southeast Asian Countries (ASEAN NCAP) has been working hard to increase vehicle safety levels in the ASEAN region. To ensure a significant impact on the ASEAN community, few enhancements need to be made to their test methodology and facilities. As an example, ASEAN NCAP is using child manikins with generic build in their vehicle safety assessment. Meanwhile, vehicle manufacturers and product developers are also using these generic references in their product designs such as the seat restraint system, child seat design, etc. For the improvement of vehicle safety especially for the ASEAN region, dedicated manikins with ASEAN anthropometric measurements are necessary. This paper aims to describe the development of 3D-printed manikins based on anthropometric data of ASEAN children aged 6 and 10 years old. The completed prototypes will be tested using a selected vehicle safety assessment (i.e., Child Restraint System installation) and intended to be applied for design refinement of vehicle safety systems

Prediction of fatigue life on lower suspension arm subjected to variable amplitude loading

This project focuses on the finite element based fatigue life prediction of lower suspension arm subjected to variable amplitude loading using different fatigue methods. Objectives of this project are to predict fatigue life of the lower suspension arm using stress-life and strain-life methods, to investigate the effect of the mean stress and to identify the suitable material for the suspension arm. The lower suspension arm was developed using computer aided design software. The finite element modeling and analysis were performed utilizing the finite element analysis code. The finite element analysis was performed using MSC.NASTRAN code using the linear elastic approach. In addition, the fatigue life analysis was performed using the stress-life and strain-life approach subjected to variable amplitude loading. The three types of variable amplitude are considered including positive mean loading (SAETRN), compressive mean loading (SAESUS) and zero mean loading (SAEBKT). It can be seen that TET10 mesh and maximum principal stress were captured the maximum stress. From the fatigue analysis, Goodman method is predict the conservative result when subjected to SAETRN and SAESUS loading while SWT method is applicable in SAEBKT loading. Stress-life is capable to give higher fatigue life when subjected to SAEBKT while strain-life method is applicable to give higher fatigue life when subjected to SAETRN and SAESUS. From the material optimization, 7175-T73 aluminum alloy is suitable material of the lower suspension arm

Harapan dan tantangan dalam pemanfaatan dana IDT

iii+32hlm.;20c

Demand, supply and analysis of a replenishable resource: a study of Michigan's Great Lakes commercial fishery

xi+178hlm.;29c