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Properties of Bacterial Cellulose and Its Nanocrystalline Obtained from Pineapple Peel Waste Juice
Budiman Anwar,Bunbun Bundjali,Yayan Sunarya,I Made Arcana 한국섬유공학회 2021 Fibers and polymers Vol.22 No.5
Bacterial cellulose is a type of biopolymers and has a magnitude of applications in food, paper, and textileindustries, and as a biomaterial in cosmetics and medicine. Whilst, nanocrystalline cellulose is a kind of renewable andbiocompatible nanomaterials that can find the vast application in biotechnology, medicine, and various technical areas. Bacterial cellulose and its nanocrystalline can be obtained by utilizing the agricultural waste. This work is focused on thecharacterization of bacterial cellulose and its nanocrystalline isolated from bacterial cellulose produced by using pineapplepeel waste juice as a culture medium. Fourier-transform infrared analysis toward the original bacterial cellulose andnanocrystalline cellulose indicated that both have the same chemical composition, however they have differences incrystallinity. The X-ray diffraction showed that both bacterial cellulose and nanocrystalline cellulose have a polymorphstructure of cellulose I. The original BC has more the allomorph structure of Iα with crystallinity index of 74 %, but afterhydrolysis process to become nanocrystalline cellulose has more the allomorph structure of Iβ with crystallinity index of89 %. The nanocrystalline cellulose has a morphology of needle-like structure, with an average diameter and length of 25±11and 325±182 nm, respectively. The thermal stability of nanocrystalline cellulose is found to be higher than the originalbacterial cellulose.
The Effect of Social Media on Brand Image and Brand Loyalty in Generation Y
BUDIMAN, Santi Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.3
Indonesia has a population of more than 260 million, of which, by 2020, Generation Y is predicted to account for 70% of the total. With different birth years, Generation Y is the backbone of Indonesia's product purchasing. Generation Y is interested in establishing strong relationships with specific brands on social media. They are also interested in working with companies to design a product. Most Generation Y utilizes more than one electronic device and they are also brand loyal. Therefore, this study seeks to examine the effect of social media (i.e., e-WOM, online community, and online advertising) on brand image and loyalty in Generation Y in Indonesia. The sampling method employed was purposive sampling. A total of 150 respondents in the age range of 23-30 years were involved as the sample. Using multiple regression model in data analysis, this study proved that e-WOM, not only have a positive and significant effect on the brand image, but also on brand loyalty. Furthermore, online community also positively and significantly affects brand image and brand loyalty. Likewise, online advertising has a positive and significant effect on brand image and brand loyalty. This study's findings indicated that all the proposed hypotheses were well accepted.
Object Tracking with Histogram weighted Centroid augmented Siamese Region Proposal Network
Budiman, Sutanto Edward,Lee, Sukho The Institute of Internet 2021 International Journal of Internet, Broadcasting an Vol.13 No.2
In this paper, we propose an histogram weighted centroid based Siamese region proposal network for object tracking. The original Siamese region proposal network uses two identical artificial neural networks which take two different images as the inputs and decide whether the same object exist in both input images based on a similarity measure. However, as the Siamese network is pre-trained offline, it experiences many difficulties in the adaptation to various online environments. Therefore, in this paper we propose to incorporate the histogram weighted centroid feature into the Siamese network method to enhance the accuracy of the object tracking. The proposed method uses both the histogram information and the weighted centroid location of the top 10 color regions to decide which of the proposed region should become the next predicted object region.
Plasticity of indium nanostructures as revealed by synchrotron X-ray microdiffraction
Budiman, A.S.,Lee, G.,Burek, M.J.,Jang, D.,Han, S.M.J.,Tamura, N.,Kunz, M.,Greer, J.R.,Tsui, T.Y. Elsevier Sequoia 2012 Materials science & engineering. properties, micro Vol.538 No.-
Indium columnar structures with diameters near 1μm were deformed by uniaxial compression at strain rates of approximately 0.01 and 0.001s<SUP>-1</SUP>. Defect density evolution in the nanopillars was evaluated by applying synchrotron Laue X-ray microdiffraction (μSLXRD) on the same specimens before and after deformation. Results of the μSLXRD measurements indicate that the dislocation density increases as a result of mechanical deformation and is a strong function of strain rate. These results suggest that the rate of defect generation during the compression tests exceeds the rate of defect annihilation, implying that plasticity in these indium nanostructures commences via dislocation multiplication rather than nucleation processes. This is in contrast with the behaviors of other materials at the nanoscale, such as, gold, tin, molybdenum, and bismuth. A hypothesis based on the dislocation mean-free-path prior to the multiplication process is proposed to explain this variance.
Cloth Product Recognition based on Siamese Network with Body Region Extraction method
Budiman, Sutanto Edward,Kurniawan, Edwin,Lee, Seung Heon,Lee, Jae Seung,Lee, Suk-Ho The Institute of Internet 2022 International journal of advanced smart convergenc Vol.11 No.2
Nowadays, people consume a lot of content such as web dramas or K-pop videos through mobile devices such as smartphones, and the market for indirect advertisements through these web dramas or K-pop videos is also increasing every year. In order to lead to the immediate purchase of indirect products in web dramas, a system that allows consumers to purchase immediately at the time the products appear in the drama is needed. In this paper, we propose a system to allow viewers to purchase products worn by celebrities immediately when viewers see and click on them. When a user clicks on a video, it recognizes the product worn by the celebrity, and displays information on the screen on the most similar product corresponding to the recognized product, allowing them to go to the seller's site where they can purchase it. In order for such a system to operate stably, a pose estimation and siamese network-based system is proposed. The proposed system will primarily be released as a streaming service in the form of an app or web page that connects the products in web dramas or other K-pop video contents screened on the mobile with e-commerce. Furthermore, in the future, the technology is expected to be used globally in various industries such as smart mobility and display kiosks.
Budiman, Arief Suriadi,Han, Seung-Min,Li, Nan,Wei, Qiang-Min,Dickerson, Patricia,Tamura, Nobumichi,Kunz, Martin,Misra, Amit Cambridge University Press (Materials Research Soc 2012 Journal of materials research Vol.27 No.3
<▼1><B>Abstract</B><P/></▼1><▼2><P>There is much interest in the recent years in the nanoscale metallic multilayered composite materials due to their unusual mechanical properties, such as very high flow strength and stable plastic flow to large strains. These unique mechanical properties have been proposed to result from the interface-dominated plasticity mechanisms in nanoscale composite materials. Studying how the dislocation configurations and densities evolve during deformation will be crucial in understanding the yield, work hardening, and recovery mechanisms in the nanolayered materials. In an effort to shed light on these topics, uniaxial compression experiments on nanoscale Cu/Nb single-crystal multilayer pillars using ex situ synchrotron-based Laue x-ray microdiffraction technique were conducted. Using this approach, we studied the nanoscale Cu/Nb multilayer pillars before and after uniaxial compression to about 14% of plastic strain and found significant Laue peak broadening in the Cu phase, which indicates storage of statistically stored dislocations, while no significant Laue peak broadening was observed in the Nb phase in the nanoscale multilayers. These observations suggest that at 14% plastic strain of the nanolayered pillars, the deformation was dominated by plasticity in the Cu nanolayers and elasticity or possibly a zero net plasticity (due to the possibility of annihilation of interface dislocations) in the Nb nanolayers.</P></▼2>
Review of Acetic Acid Synthesis from Various Feedstocks Through Different Catalytic Processes
Budiman, A. W.,Nam, J. S.,Park, J. H.,Mukti, R. I.,Chang, T. S.,Bae, J. W.,Choi, M. J. Springer Science + Business Media 2016 CATALYSIS SURVEYS FROM ASIA Vol.20 No.3
<P>Acetic acid (AA) has been largely used with a wide range of applications such as a raw material for a synthesis of vinyl acetate monomer, cellulose acetate or acetate anhydrate, acetate ester and a solvent for a synthesis of terephthalic acid and so on. The present paper briefly summarizes the commercialized chemical processes with their Rh or Ir-based catalytic systems in a liquid-phase carbonylation reaction such as Monsanto, Cativa and Acetica processes. In addition, some alternative catalytic systems such as heterogeneous catalysts to produce AA by direct oxidation or indirect carbonylation of dimethyl ether through BP-SaaBre process in a gas-phase reaction to solve some problems such as a difficult separation of homogeneous catalysts in a corrosive reaction medium. Some home-made heterogeneous catalysts such as a rhodium incorporated graphitic carbon nitride (Rh-g-C3N4) and some heterogenized homogeneous catalysts using the supports of tungsten carbide, iron oxide or graphitic carbon nitride containing rhodium complexes were also introduced for the synthesis of AA through a liquid-phase methanol carbonylation reaction to effectively solve the leaching problem of active rhodium metal as well as to mitigate the separation problem of homogeneous catalysts.</P>