A Study on Graph Transformer-based Network for Brain-Computer Interface

Permana Deny(데니퍼마나),Kae Won Choi(최계원) 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.2

Optimizing tropical dairy goat diets: balancing rumen degradable protein, non-fiber carbohydrates, and sulfur requirements

Permana Idat Galih,Rosmalia Annisa,Anggarini Febby Yustika,Despal Despal,Toharmat Toto,Evvyernie Dwierra 아세아·태평양축산학회 2025 Animal Bioscience Vol.38 No.3

Objective: This study aimed to investigate the effects of rations incorporating rumen degradable protein (RDP), non-fiber carbohydrate (NFC), and sulfur on nutrient utilization, milk production, milk quality, and the economic aspects of dairy goats.Methods: In the first study, five treatments were tested in a block-randomized design to examine <i>in vitro</i> fermentability and digestibility. Treatments included P0 (control diet), P1 (P0+7.5% cassava-NFC), P2 (P0+7.5% cassava-NFC and 5% soybean), P3 (P0+7.5% cassava-NFC and 5% autoclaved soybean), and P4 (P0+7.5% cassava-NFC, 5% autoclaved soybean, and 0.1% sulfur). In the second study, sixteen lactating Saanen-Ettawa crossbreed dairy goats (initial milk production = 0.97±0.25 L/head/d, 30 DIM; body weight = 44.44±7.20 kg) were assigned into four groups and fed treatment diets: R0 (basal diet), R1 (R0+12% autoclaved soybean), R2 (R0+12% autoclaved soybean and 9% cassava-NFC), and R3 (R0+12% autoclaved soybean, 9% cassava-NFC, and 0.11% sulfur). The diets were offered for 7 weeks with a two-week adaptation period. Parameters observed include milk production and quality, milk fatty acids, blood hematology and metabolites, and economic aspects. The study used a block randomized design with initial weight as a block.Results: The treatment diets in the first study had no effect on <i>in vitro</i> fermentability and digestibility. Treatments R2 and R3 resulted in higher milk production than R0 and R1. Milk quality remained consistent across treatments, while solid non-fat, lactose, and protein was higher in R2 and R3. Blood hematology was unaffected by the treatments. Nutrient efficiency and income over feed cost were enhanced by R2 and R3 treatments.Conclusion: Protected RDP using autoclaved soybean and cassava-NFC maintained <i>in vitro</i> digestibility, even though it did not improve <i>in vitro</i> fermentability. Precision dairy ration based on RDP, NFC, and sulfur positively impacts milk production, nutrient efficiency, and animal health in dairy goats. Objective: This study aimed to investigate the effects of rations incorporating rumen degradable protein (RDP), non-fiber carbohydrate (NFC), and sulfur on nutrient utilization, milk production, milk quality, and the economic aspects of dairy goats. Methods: In the first study, five treatments were tested in a block-randomized design to examine in vitro fermentability and digestibility. Treatments included P0 (control diet), P1 (P0+7.5% cassava-NFC), P2 (P0+7.5% cassava-NFC and 5% soybean), P3 (P0+7.5% cassava-NFC and 5% autoclaved soybean), and P4 (P0+7.5% cassava-NFC, 5% autoclaved soybean, and 0.1% sulfur). In the second study, sixteen lactating Saanen-Ettawa crossbreed dairy goats (initial milk production = 0.97±0.25 L/head/d, 30 DIM; body weight = 44.44±7.20 kg) were assigned into four groups and fed treatment diets: R0 (basal diet), R1 (R0+12% autoclaved soybean), R2 (R0+12% autoclaved soybean and 9% cassava-NFC), and R3 (R0+12% autoclaved soybean, 9% cassava-NFC, and 0.11% sulfur). The diets were offered for 7 weeks with a two-week adaptation period. Parameters observed include milk production and quality, milk fatty acids, blood hematology and metabolites, and economic aspects. The study used a block randomized design with initial weight as a block. Results: The treatment diets in the first study had no effect on in vitro fermentability and digestibility. Treatments R2 and R3 resulted in higher milk production than R0 and R1. Milk quality remained consistent across treatments, while solid non-fat, lactose, and protein was higher in R2 and R3. Blood hematology was unaffected by the treatments. Nutrient efficiency and income over feed cost were enhanced by R2 and R3 treatments. Conclusion: Protected RDP using autoclaved soybean and cassava-NFC maintained in vitro digestibility, even though it did not improve in vitro fermentability. Precision dairy ration based on RDP, NFC, and sulfur positively impacts milk production, nutrient efficiency, and animal health in dairy goats.

Label Smoothing in Motor Imagery Decoding

Permana Deny(데니퍼마나),Kae Won Choi(최계원) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

This article proposes a label smoothing in motor imagery decoding to reduce overfitting and over-confident. The result suggests that the approach helps to improve the performance by 5%.

Chiral Nematic Chitin Assembly under a Mild Condition

Rega Permana,Dongyeop X. Oh,Yun Jeong Cha,Hoang-Linh Nguyen,Hwa Heon Je,Yong Seok Jho,Dong Soo Hwang,Dong Ki Yoon 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

CaCO₃ Mineralization in the Presence of Chiral Nematic Structure Chitin and Acidic Protein

Rega PERMANA,Dong Soo HWANG 한국생물공학회 2016 한국생물공학회 학술대회 Vol.2016 No.4

Attitudes and Practices toward Droplet and Airborne Universal Precaution among Nurses during the COVID-19 Outbreak in Indonesia

Lindayani, Linlin,Permana, Bhakti,Taryudi,Darmawati, Irma 한국성인간호학회 2021 성인간호학회지 Vol.33 No.1

Tunichrome mimetic matrix, its perspective in abatement for carcinogenic hexavalent chromium and specific coordination behavior

Dwivedi, Amarendra Dhar,Permana, Rega,Singh, Jitendra Pal,Yoon, Hakwon,Chae, Keun Hwa,Chang, Yoon-Seok,Hwang, Dong Soo Elsevier 2017 Chemical engineering journal Vol.328 No.-

<P><B>Abstract</B></P> <P>Inspired by naturally occurring metal chelation strategy by pyrogallol moiety of tunichromes of marine tunicates, a strong retention of carcinogenic chromium (Cr<SUP>VI</SUP>) is described by mimicking tunichrome matrix as a proof-of-concept investigation in water treatment applications. Harvesting tunichromes tailored with the pyrogallol moiety are extremely difficult owing to aerial sensitivity and purification difficulties, thus proving a challenging synthesis problem. Despite significant interest, knowledge of specific metal coordination in tunicate’s matrix is still ambiguous, hindering study scope. We planned to fabricate a promising tunichrome matrix (TM) tailored with pyrogallol moieties from the Earth-abundant raw materials (gallic acid and chitin nanofiber) at mass scale without artificial aid. Specifically, we aimed at atomistic understanding of contaminant and pyrogallol moiety of TM by examining the structural parameters (redox change, geometrical distortion, coordination bond). Cr <I>K</I>-edge extended X-ray absorption fine structure (EXAFS) corresponds well to nontoxic Cr<SUP>III</SUP> (average four CrO bond lengths of 1.91Å) and a small fraction of Cr<SUP>VI</SUP> (average two CrO bond lengths of 1.62Å). A coupled reductive complexation mechanism was identified by combining near edge X-ray absorption fine structure (NEXAFS) and linear combination fits. From the viewpoint of practical utility and effective performance (nearly 119mg chromium per g weight of TM), the impacts of water chemistry conditions were investigated from a variety of contaminated waters, showing a distinct improvement compared to conventional popular materials. The gained knowledge would be beneficial for utilizing a pyrogallol moiety as an alternative greener and sustainable scavenger, specifically for toxic chromium.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A newly designed nano-bio tool inspired by marine tunicate, a filter feeder. </LI> <LI> Superior retention of Cr<SUP>VI</SUP> by mimicking tunichrome matrix in remediation treatment. </LI> <LI> Pyrogallol – a primary factor in increased efficiency as a proof-of-concept study. </LI> <LI> First comprehensive report on tunichrome’s chromium metal coordination chemistry. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Tunichrome-Inspired Gold-Enrichment Dispersion Matrix and Its Application in Water Treatment: A Proof-of-Concept Investigation

Dwivedi, Amarendra Dhar,Permana, Rega,Singh, Jitendra Pal,Yoon, Hakwon,Chae, Keun Hwa,Chang, Yoon-Seok,Hwang, Dong Soo American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.23

<P>Tunicate, a filter-feeder in seawater, is able to accumulate high amount of metals using intracellular polymer matrices. The woven pyrogallol structures of tunichrome, a small peptide contained in tunicate's blood;Cells, is believed to, be responsible for selective. metal sequestration in tunicates from seawater. However, the intriguing tunichrome matrix is difficult both to harvest from the tunicate and to synthesize massively due to the-extreme oxidation sensitivity of the pyrogallol, moiety which limits the study scope. Here, we succeeded to mimic tunichrome by conjugating two cheap and naturally occurring components: pyrogallol-5-carboxylic acid (gallic acid) and chitin. nanofiber A tunicate-mimetic infiltration matrix of surface-tailored chitin nanofibers with pyrogallol moieties (CGa) demonstrated the versatility of this strategy in generation of ingenious filtration material, especially for unprecedented fine and-Clean gold recovery inside of the tunicate-mimetic infiltration matrix (>99%, 533 mg gold per gram weight), which exceeds that of the,presently most popular materials. Complexation between pyrogallol on the nanofiber and gold-was similar to that of a tunichrome's metal sequestration. Extended X-ray absorption fine Structure, (EXAFS); spectroscopy and data-fitting, elucidated the decreased coordination numbers for Au-Au nearest neighbors, demonstrating that gold coordinated to pyrogallol units, followed by an intramolecular association of Au-0. A catalytic reduction of 4-nitrophenol mediated by the-tunicate-mimetic matrix with harvested gold revealed excellent recyclability up to 30 cycles (similar to 95% reduction), which together with methylene-blue reduction and antimicrobial performances indicates the versatile characteristics,of sustainable processes by the tunichrome mimetics. This strategy opens the door for fast-developing new biomimetic alternatives for precious metal recovery, which is not restricted to gold and can offer a tool for multifaceted soft/hard nanomaterials..</P>

Captive breeding of endangered betta fish, Betta rubra, under laboratory conditions

Agus Priyadi,Asep Permana,Eni Kusrini,Erma Primanita Hayuningtyas,Bastiar Nur,Lukman,Josie South,Sawung Cindelaras,Sulasy Rohmy,Rendy Ginanjar,Muhamad Yamin,Djamhuriyah S Said,Tutik Kadarini,Darmawan The Korean Society of Fisheries and Aquatic Scienc 2024 Fisheries and Aquatic Sciences Vol.27 No.4

Betta rubra, classified as endangered fish species by the International Union for Conservation of Nature (IUCN), has been successfully bred and raised in captivity for two generations under laboratory conditions. This study aimed to provide comprehensive information on the captive breeding of B. rubra, focusing on various parameters crucial for ex-situ conservation and domestication. The research involved breeding trials, embryo and larvae observation, first feeding experiments, larva and fry rearing trials, and the evaluation of growth and reproduction in two generations. The study revealed that the female B. rubra, with an average total length of 5.17 ± 0.15 cm and weight of 1.61 ± 0.06 g, produced an average of 73.67 ± 7.09 eggs, 34.33 ± 5.13 total larvae, and exhibited a hatching rate of 46.67 ± 5.77%. The embryogenesis process commenced on the day of spawning (dps) and continued until the eggs hatched at 6 dps. Larvae development and yolk absorption occurred from 0 to 6 days post-hatching (dph). The study also examined the impact of different initial feeding options, with chopped Tubifex resulting in the most significant in- crease (p < 0.05) in length. The growth pattern of B. rubra larvae showed slow initial growth during the first seven days, followed by a rapid exponential growth phase from day 8 to day 39. Two generations of B. rubra (G1 and G2) were successfully bred in captivity, with G2 showing a better tendency for growth in length and weight compared to G1. Notably, there were no significant differences (p > 0.05) in reproductive success between the wild-origin broodstock (G0), G1, or G2. This research contributes valuable insights into the captive breeding of B. rubra and its early life stages, offering critical information for the conservation and sustainable management of this endangered species. Further research is needed to explore the long-term effects of domestication on behavior, physiology, and phenotypic diversity.

Prospecting for Insect Pheromones in Indonesia: Finds, Failures and the Future

Angerilli, N.P.D.,Permana, A.D.,Sasaerila, Y.,Hallett, R.,Zilahi-Balogh, R.,Edmonds, R. Korean Society of Applied Entomology 1998 Journal of Asia-Pacific Entomology Vol.1 No.1

The isolation, identification and application of pheromones in agriculture and forestry in Indonesia is beginning and is of increasing importance in the official government strategy of pest management. As the fourth most populous country in the world, home to some of the largest remaining tropical rainforests and undergoing rapid industrualization, there are a variety of powerful reasons for Indonesia to continue to develop and implement IPM prograns that are effective, readily available and user-friendly. Many IPM programs will be benefited from the inclusion of a pheromone-based component. Several recent pheromone research projects, undertaken in Indonesia to identify and develop pheromones as tools in IPM programs, were examined. These include diamondback moth(Plutella xylostella(L.)); soybean pod borer(Etiella zinckenella Trietschke and E. hobsoni Butler); sugar cane top borer(Scirpophaga nivella F.); and some coleopteran and other pests of palm(Oryctes rhinoceros(L.), Rhynchophorus ferrugineus(Olivier), R. vulneratus(Panzer) and Setothosea asigna(vE)). The nature of the pheromone was discussed in each case and how the pheromone information can be of assistance in IPM programs involving these insect pests was reviewed. Some obstacles to pheromone research as well as some of the limitations to the inclusion the influence of difficulties in communication and access to information, bureaucracy and the acquisition of equipment and supplies are not uncommon. Further, communication of research results as well as the general level of capitalization of agricultural effort in addition to grower sociocultural factors can be problematic. However there are a large number of opportunities for productive pheromone research and we present an active 'hot' list of target insect/crop combinations which are likely to prove rewarding. Facilitation of a continuous indigenous research effort involv-ing pheromones is being achieved through the development and strengthening of a Pheromone and Semiochemical Research Group centered at the Bandung Institute of Technology.