Natural disasters and human error factors can cause damage to buildings. Human error causes various issues, including inadequate craftsmanship in the mixing of building materials and preliminary structural design and ...
Natural disasters and human error factors can cause damage to buildings. Human error causes various issues, including inadequate craftsmanship in the mixing of building materials and preliminary structural design and specification. Inadequate knowledge of the building's structure and the type of soil on which it stands is also one of the fault designs in construction. This study utilises a case study methodology divided into three sections: soil analysis, building analysis, and techniques for avoiding and repairing the research object. A literature review is essential to ascertain the type of soil and the proper footing to utilise when examining the soil. In the building analysis, it is necessary to determine the damage of the building and its repair. These steps demanded were to prevent further damage by adding structures to reinforce existing structures in load distribution. After determining that the structure is safe from further damage, the final step is to repair the walls, floor, and ceiling. These improvements are part of an effort to ensure the building's long term sustainability. The final phase in home restoration is to decorate the interior to make the residents feel comfortable.
Having a better understanding of air pollutants in railway systems is crucial to ensure a clean public *** study measured,for the first time in Brazil,nanoparticles(NPs)and black carbon(BC)on two groundlevel platforms...
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Having a better understanding of air pollutants in railway systems is crucial to ensure a clean public *** study measured,for the first time in Brazil,nanoparticles(NPs)and black carbon(BC)on two groundlevel platforms and inside trains of the Metropolitan Area of Porto Alegre(MAPA).An intense sampling campaign during thirteen consecutive months was carried out and the chemical composition of NPs was examined by advanced microscopy *** results showed that highest concentrations of the pollutants occur in colder seasons and influenced by variables such as frequency of the trains and passenger ***,internal and external sources of pollution at the stations were *** predominance of NPs enriched with metals that increase oxidative stress like Cd,Fe,Pb,Cr,Zn,Ni,V,Hg,Sn,and Ba both on the platforms and inside trains,including Fe-minerals as hematite and magnetite,represents a critical risk to the health of passengers and employees of the *** interdisciplinary and multi-analytical study aims to provide an improved understanding of reported adverse health effects induced by railway system aerosols.
The post-harvest process very much determines the quality and quantity of rice. The utilization of agricultural machinery in rice milling is one solution in maintaining rice quality. The most commonly used husker mach...
The post-harvest process very much determines the quality and quantity of rice. The utilization of agricultural machinery in rice milling is one solution in maintaining rice quality. The most commonly used husker machine is a rubber roll type. This study aims to calculate the efficiency of huskers and the quality of rice. The parameters measured to analyze the efficiency of the milling machine and the quality of rice are the weight of unhulled rice to be milled, the weight of milled rice, and the time for milling the grain to become rice. The results showed that the husker efficiency at 1,237 rpm rotation speed was 46.3%, at 1,354 rpm was 46.7% and at 1,395 rpm was 46.6%. The quality of rice produced at a rotation speed of 1237 rpm, 70.03% whole grains, 3.58% broken grains, 1.51% groats. For 1,354 rpm, the rotation speed is 67.75%, broken grains 5.16%, and groats 2.89%. While at the rotation speed of 1,395 rpm, the percentage of broken grains was 56.26%, broken grains 4.80%, groats 1.27%.
Cancer is one of the primary causes of death in the world and the prevalence in Indonesia reaches 1,4% per year. One method of the most developed cancer therapies right now is targeting drug delivery. Targeting drug d...
Cancer is one of the primary causes of death in the world and the prevalence in Indonesia reaches 1,4% per year. One method of the most developed cancer therapies right now is targeting drug delivery. Targeting drug delivery makes it possible for drugs to be delivered directly to the targeted cells and released once they reach the destination. The aim of this research is to develop a nanocarrier using folic acid-functionalized magnetic nanoparticles to improve the effectiveness of antitumor drugs for cancer therapy. The magnetic nanoparticles synthesis method used in this research is chemical synthesis. Chemical materials FeCl3 and FeCl2 are mixed with NH4OH until magnetic nanoparticles appear. The magnetic nanoparticles obtained are then coated using bovine serum albumin, loaded with the drug doxorubicin, and functionalized with folic acid. The characterization methods used are Brine Shrimp Lethal Test (BSLT), X-Ray Diffractometer (XRD), Particle Size Analyzer (PSA), and MTT Assay. The success of drug release test is performed using UV-Vis. The results of this research showed that the magnetic nanoparticles were non-toxic with no impurities, but had not passed the size requirement as a good nanocarrier. Drug release in acidic pH, which is 5.4, had the highest release rate, thus it would be suitable for cancer cells which have lower pH compared to normal cells. Cytotoxicity test using MTT Assay method with murine osteoblastic cell line MC3T3 cells showed quite high cell viability, so it will not affect normal tissues and cells. It can be concluded that folic acid-functionalized, doxorubicin-loaded magnetic nanoparticles have potential to be used as nanocarrier in drug delivery system.
The Bili-Bili Reservoir is located in the middle of the Jeneberang watershed in South Sulawesi Province, which was built for flood control, irrigation, raw water supply, and hydroelectric power plants. However, in the...
The Bili-Bili Reservoir is located in the middle of the Jeneberang watershed in South Sulawesi Province, which was built for flood control, irrigation, raw water supply, and hydroelectric power plants. However, in the latest development, there has been a decline in utilization of the reservoir service function due to changes in the catchment area condition because of sediment. Estimation of sediment concentration in the Bili-bili reservoir was analyzed using spectrometer data. Estimation of Total Suspended Sediment (TSS) using a spectrometer by reflectance testing of the ratio between bands with various regression equations. Algorithm estimation of TSS concentration based on spectrometer measurements provides a coefficient of determination (R2) of 0.800 and an RMS error of 0.088, with a 3rd order polynomial equation for the green/red bands ratio: y = 62.667x3 – 154.328x2 + 121.27x – 29.902.
Generation Z has a preference for individual learning using information and communication technology. Generation Z prefers digital audio-visual media to verbal media. The study aimed to develop a demonstration video i...
Generation Z has a preference for individual learning using information and communication technology. Generation Z prefers digital audio-visual media to verbal media. The study aimed to develop a demonstration video in the subject of make-up puff pastry for Pastry and Bakery course and assess the video feasibility. This study was a research & development (R & D) approach using 4D (define, design, develop, and disseminate) models. Problem, student, and curriculum analysis was performed in the define stage. Video scriptwriting and the production team selection were performed in the design stage. Develop stage consisted of video shooting, video editing, video revision, and assessment. The shooting was accomplished using Sony A6000 16-50 mm camera, Bestluck New Pro F600 lighting with ellipsoidal reflector, Libec 650EX tripod, and Zhiyun Crane V2 stabilizer. Voice was recorded using Boya Clip-on wireless microphone. The audio was edited using Adobe Audition 2017 and the video was compiled using Adobe Premiere pro CC 2017. In the disseminate stage, the video was uploaded to YouTube channel Boga UNY. Based on the feasibility assessment by 2 material experts, a media expert, and 31 potential users, the video was considered very feasible as learning media.
Solenoids have been made with square and triangular cross-sections. Both kinds of solenoids are made with an iron core and without an iron core. The solenoids specification were 12 cm long and 3.5 cm wide with 220 win...
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Generation Z uses technology frequently and demands learning that is individualized, engaging, digital, and visually based. They prefer learning videos to learn about the product making process. The research objective...
Generation Z uses technology frequently and demands learning that is individualized, engaging, digital, and visually based. They prefer learning videos to learn about the product making process. The research objectives were to develop the video of making mango sorbet for the Agriculture Product Processing course and evaluate the feasibility of the video. This was a research & development (R&D) study using 4D models (Define, Design, Develop, and Disseminate). The video was captured using Sony NX100 camera and Kino Flo 6-bank lighting. The presenter and voice-over dubber's sound were recorded using Boya BY WM8 wireless microphone. The video was edited by Adobe Premiere Pro CC 2017. The video had a duration of 14 minutes 29 seconds with mp4 format. The video consisted of the opening section, the content section, and the closing section. The opening and closing section were delivered by the presenter. The content section was demonstrated by an actress and voice-over dubber. The video feasibility was evaluated by 2 material experts, a media expert, and 30 students of Vocational High School (VHS) 1 Cangkringan. The data were analysed descriptively. According to the feasibility evaluation, the making mango sorbet video was considered to be very feasible to be utilized as a learning media.
The student of vocational high school nowadays are classified as generation Z. They are common to use information and communication technology. They prefer audio-visual learning media rather than podcast recording or ...
The student of vocational high school nowadays are classified as generation Z. They are common to use information and communication technology. They prefer audio-visual learning media rather than podcast recording or text media. This study aimed to develop a video on making dry banana for the Agriculture Product Processing course and assessing the video's feasibility. This study was a research & development (R&D) study using the 4D (define, design, develop, and disseminate) approach. Analysis of content, curriculum, and student needs was carried out in the define stage. The scriptwriting and production team selection was conducted in the design stage. Video recording, editing, and feasibility test from experts were performed in the development stage. The video was evaluated by two content experts and one media expert. In the disseminate stage, thirty students as prospective consumers evaluated the video feasibility. The data were analyzed descriptively. The video was in the mp4 format and had a duration of 13 minuter and 13 seconds. The video has been provided with high-definition images, captions, pictures, 2D animations, transitions, and effects. The experts and the students rated this video to be very feasible to be used as instructional media.
In general, noise is a problem and it can be found everywhere, including at the aero activity such as aircraft maintenance vicinity. The object of the noise case selected in this study is the Auxiliary Power Unit (APU...
In general, noise is a problem and it can be found everywhere, including at the aero activity such as aircraft maintenance vicinity. The object of the noise case selected in this study is the Auxiliary Power Unit (APU) which is the part of Airbus A330 aircraft with the APU type GTCP 331-350. The noise of APU while operate during maintenance can affect the occupational health and safety conditions of the worker. In this study, a micro-perforated panel (MPP) is used to absorb or reduce the sound intensity. MPP is made of a thin flat material where in this research using acrylic and placing small holes on its surface. Both experimental and numerical method are used in this research. The first step in performing the MPP design is numerically to obtain the geometry according to the absorption coefficient target at the specified noise frequency. For the experimental or testing phase of finished MPP design, a tool called an impedance tube is used. The test procedure refers to the ISO 10534-2 or ASTM E 1050-90 document. There are two types of impedance tube, first in diameter of 10 mm and the second one in 3 cm. The 10 mm impedance tube has the frequency range from low to medium frequency while the 3 mm for the high frequency testing. The absorption coefficient prediction value from numerically MPP design for the targeted frequency of 695 Hz gets 0.8819 versus the actual value after test in impedance tube is 0.8875. Furthermore, the highest absorption coefficient value for design or prediction and actual testing lies at the exact frequency of 750 Hz where for predictions has 0.95 and 1 for actual testing. Based on these results it can be concluded that MPP has the potency to reduce the APU noise. Henceforth it will be interesting to apply the MPP technology directly to the APU compartment on aircraft.
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