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2019 Design of modular femoral implant based on anthropometry of Eastern Asian Muhammad Satrio Utomo,Dhyah Annur,Muhamad Ikhlasul Amal,Andika Widya Pramono,Daniel Panghihutan Malau,Sugeng Supriadi Knee arthroplasty is one of most frequent orthopedic surgery perfomed in Indonesia. Unfortunately, most of implant products for knee arthroplasty are imported and designed not specifically for Indonesian. This might negatively affects patients due to improper fitting and non-ideal stress distribution between the implant and the surrounding bone tissue. Here, we design and numerically test knee joint implants based on Indonesian anthropometry. The anthropometry of Indonesian male and female adults are obtained from literatures. In addition, we optimize the design by examining the stress distribution of current commercial knee implant products and looking for geometrical modification to obtain the most… Lihat
2019 Differential impacts of 2016 coral bleaching on coral reef benthic communities at Sekotong Bay, Lombok Barat, Indonesia Imam Bachtiar Coral bleaching has been a major causal factor of coral mortality worldwide in the last two decades and it is therefore threaten food security. Understanding post-bleaching recovery is therefore very crucial to formulate strategy in promoting natural coral reef recovery. The present study documented coral reef communities both in pre- and post-bleaching event in early 2016. The results show that coral bleaching variably reduced coral and soft-coral covers. Sponge and other fauna cover considerably fluctuated. Since the individual number of soft-coral, sponge and other fauna were small, there is likely no big impact of coral bleaching. Among 12 study sites,… Lihat
2019 Lactobacillus pentosus isolated from Muntingia calabura shows inhibition activity toward alpha-glucosidase and alpha-amylase in intra and extracellular level Andri Frediansyah, Suryani, Rifa Nurhayati, Miftakhussolikhah and J. Sholihah Lactobacillus pentosus is one of the most prevalence lactic acid bacterium which available in plant-based fermentation. Here, we reported that the cell extract and cell-free supernatant of L. pentosus strain TL 2.7, TL 5.8 and TL 7.8 isolated from Kersen (Muntingiacalabura L.) showed potential anti-diabetic properties by inhibition of alpha-glucosidase and alpha-amylase activity in vitro. All isolated also enhanced the antioxidant capacity through DPPH in vitro test. This initial study will be beneficial for screening and application of functional food with anti-diabetic properties. Lihat
2019 Plasma activation on natural mordenite-clinoptilolite zeolite for water vapor adsorption enhancement Satriyo Krido Wahono S.T., Hernawan S.Si. M.Sc., Dwi Joko Prasetyo S.T., Andri Suwanto , Tri Hadi Jatmiko ST. MT,Krasimir Vasilev Water vapor is one of the crucial impurities in biogas which have to be removed for optimal performance. Utilization of natural zeolites as water vapor adsorbents is one of the proposed solutions. However, the small specific surface area of natural zeolite needs to be improved to increase the material adsorption capacity, one of the methods being physicochemical treatment. The consequences of the increased specific surface area by physicochemical treatment are the Si/Al ratio and hydrophobicity enhancement which counterbalance the benefits of the increased specific surface area. In this work, plasma activation treatment was applied successfully to increase the water adsorption… Lihat
2019 Performance of Hybrid Adhesives of Blocked-pMDI/Melamine-Urea-Formaldehyde Resins for the Surface Lamination on Plywood Muhammad Adly Rahandi Lubis,Widya Fatriasari,Yana Kusdiyana,Hery Syapari,Byung-Dae Park, Sang-Min Lee To improve the water resistance of melamine-urea-formaldehyde (MUF) resins, different levels of blocked polymeric 4,4 diphenyl methane diisocyanate (B-pMDI) were blended with MUF resins to prepare B-pMDI/MUF hybrid adhesives, and their adhesion performances were evaluated for the surface lamination of fancy veneer on plywood. FT-IR spectra showed that the de-blocked –NCO groups reacted with the –OH of hydroxymethyl groups of the MUF resins to form urethane bonds at 2% B-pMDI/MUF, which was detected before and after their hydrolysis. The mass loss after the hydrolysis consistently decreased as the B-pMDI level increased, indicating an improvement in the water resistance. As the… Lihat
2019 Geographical and Hydrological Conditions Edikusmanto,Deny Sutisna,M. Hasanudin,Ai Jun pan, Wei bo Wang, xi wu zhou, Kai Li, Mingzhang Zeng - Lihat
2019 Transformation of Mordenite-Clinoptilolite Natural Zeolite at Different Calcination Temperatures Satriyo Krido Wahono,Dwi Joko Prasetyo,Tri Hadi Jatmiko,Andri Suwanto,Diah Pratiwi,Hernawan,Krasimir Vasilev Natural zeolite is one of prospective material with various applications. The material has low-cost provisioning and abundant availability in the world. Mordeniteclinoptilolite is one of the common types of natural zeolite; one of the deposits are located in Gunungkidul, Yogyakarta, Indonesia. For optimizing the utilization, some treatment is needed, calcination being one of the possible treatments. The dealuminated natural zeolite was used as the base material for understanding the transformation effect, then calcinated the zeolite in various temperature range between 400 °C and 1000 °C. Some characterization was conducted after the treatment, such as XRD, SEM-EDX, and BET to explore… Lihat
2019 Seed Selection Using Molecular Approach for Ex Situ Conservation of Critically Endangered Tree Species (Vatica bantamensis (Hassk.) Benth. & Hook. ex Miq.) in Java, Indonesia Yayan Wahyu Candra Kusuma,Siti Roosita Ariati,Rosniati Apriani Risna,,,,Chika Mitsuyuki, Yoshihisa Suyama, and Yuji Isagi Ex situ conservation is an important complementary strategy for in situ to conserve endangered plant species. However, the limited areas designated for ex situ conservation such as in botanic gardens have become a great challenge for conservation practitioners and scientists attempting to optimally conserve the genetic diversity of targeted plant species. Our study aimed to assess genetic diversity and structure of wild seedlings of Vatica bantamensis, an endemic and critically endangered dipterocarp from Java (Indonesia). We also estimated genetic differentiation between the wild seedlings and existing ex situ collection and evaluated the genetic diversity preserved in the ex situ collection.… Lihat
2019 ZOO.2.02. Systematics of New Guinea treefrogs (Litoria: Pelodryadidae) with erectile rostral spikes: an extended description of Litoria pronimia and a new species from the Foja Mountains Mumpuni,PAUL M. OLIVER, RAINER GÜNTHER, STEPHEN J. RICHARDS Abstract A small number of treefrog species (Litoria) from Melanesia are unusual amongst Anura in having distinctive fleshy rostral spikes. Here, we first present an extended description for Litoria pronimia Menzies, a small species that is widespread along the southern edge of the Central Cordillera of New Guinea, and in which males have a long and erectile rostral spike. Second, we describe Litoria pinocchio sp. nov. a new, morphologically similar, yet geographically disjunct species from the Foja Mountains in northern Papua Province, Indonesia. The new species differs from Litoria pronimia in aspects of body shape, proportions and colouration. A review… Lihat
2019 [JURNAL TERINDEKS SCOPUS DAN ESCI]: In Vitro Study of the Combination of Doxorubicin, Curcuma xanthorrhiza, Brucea javanica, and Ficus septica as a Potential Novel Therapy for Metastatic Breast Cancer Ika Rahmawati Sutejo, Herwandhani Putri, Riris Istighfari Jenie, Edy Meiyanto, Sri Handayani Less optimized therapeutic effects constrain the use of doxorubicin as the main agent of chemotherapy for metastatic breast cancer, resistance and side effects. Therefore we need a combination of more than one chemopreventive agent which has different molecular targets to solve that problem. The aims of this study is to prove the inhibitory effect of ethanolic extract of rhizome of Curcuma xanthorrhiza (ECx), fruit of Brucea javanica (EBj), leave of Ficus septica (EFs) and doxorubicin (Dox) alone and its combination on migration and invasion of a highly metastatic 4T1 breast cancer cell line. Cytotoxic activity of single and combination treatment… Lihat