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2022 Morphological and Anatomical Variations among Alocasia alba Schott Accessions in Bali Botanic Garden Eka Fatmawati Tihurua,Ni Putu Sri Asih,Ema Hendriyani,Ni Putu Sri Asih,Ema Hendriyani Alocasia alba Schott is a member of Macrorrhizos group from Aroid family that has conserved in Bali Botanic Garden. On its development, the collections showed varied morphological diversity on leaves and flowers. The aim of this study is to fill the knowledge gap in morphology and anatomy of the species A. alba and to know the phenotypic variation in this species. A total of eight A. alba accessions from Java, Bali and West Nusa Tenggara were observed in morphological and anatomical characters. The result showed that the eight accessions of A. alba have some variations in morphological and anatomical characters.… Lihat
2022 Papuacerdrus papuana (f. Muell) h.l.li., A NEW SOURCE FOR TWO BIOACTIVE DITERPENES OF FERRUGINOL AND trans-COMMUNIC ACID THAT VIRTUALLY ACTIVE AGAINST SARS-COV-2 The aim of the study is the research and identification of bioactive secondary metabolites from the leaves of Papuacedrus papuana that not have been reported yet so far. Two main antibacterial compounds ferruginol and trans-communic acid were isolated from the leaves of the plant through several chromatography techniques, including a TLC-direct bioautography technique. The antibacterial activity of abiatane and labdane diterpenes was categorized as with the values of MIC were 16 and 4 µg/mL for ferruginol and 8 and 16 for trans-cummunic acid against Escherichia coli InaCC B5 and Staphylococcus aureus InaCC B4, respectively. In addition, only ferruginol showed a… Lihat
2022 Performance of Solar Concentrator with and without Mirror Coating Paper Muhamad Muslih, Oscar Haris, Dewi Sartika Thamren, Ramayanty Bulan The utilization of solar energy continues to be developed to get the best efficiency. This energy can be used for electricity generation, cooling, and/or drying. One technology that is still under development is the use of solar concentrators. Therefore, our paper aims to measure the performance of the development of a solar collection unit coated with mirror paper. Furthermore, the data is compared with the test data for solar concentrators without mirror paper that was carried out by previous researchers in 2019. The method used in this research is a field experiment. A simple statistical comparison method was carried out… Lihat
2022 Bioremediation of perfuorochemicals: current state and the way forward Risky Ayu Kristanti,Kuok Ho Daniel Tang Perfuorochemicals are widely found in the environment due to their versatile uses and persistent nature. Perfuorochemicals have also been detected in human and animals due to direct or indirect exposures, giving rise to health concerns. This review aims to examine the bioremediation of perfuorochemicals with plants, bacteria and fungi, including their efciency and limitations. It also aims to propose the future prospects of bioremediation of perfuorochemicals. This review retrieved peerreviewed journal articles published between 2010 and 2021 from journal databases consisting of Web of Science, Scopus and ScienceDirect. This review shows that multiple Pseudomonas species could degrade perfuorochemicals particularly perfuoroalkyl… Lihat
2022 Adaptation strategy to coastal erosion by rural communities: Lessons learned from Ujunggebang village, Indramayu, West Java, Indonesia Wahyu Budi Setyawan Coastal hazard due to wave activity, in the form of coastal erosion, has long been a problem in the coastal area of Ujunggebang. Loss of coastal land in the coastal area has removed a lot of rice fields, settlements, and public facilities. Efforts to maintain the coastline along 3,300 m of the coastal area, by building coastal defense structures (CDS), have been carried out by the central government since 2006 but, until 2015, the CDS that has been built is still only around 1782 m long, in some places the structure is damaged due to wave activity, and in general… Lihat
2022 Analysis of GHG emissions of tofu industry, study case in Indonesia Tofu is one of the protein sources with high demand in Indonesia. Currently, several tofu industries have used stainless steel-based equipment. This condition shows the seriousness of the tofu industry to make hygienic tofu products. However, hygienic tofu products are not enough. The competition of global market required the products to take notice not only for its quality, but also come into environmentally-friendly product that characterized by low value of CO2 emission. In accordance to the condition, studies related to the calculation of CO2 emissions resulted from a product are necessary. In this study, we conducted research on the estimation… Lihat
2022 Impact of Local REDD+ Intervention on Greenhouse Gas Emissions in East Kalimantan Province, Indonesia Martiwi Diah Setiawati,Kiswanto, Satoshi Tsuyuki The Ministry of Environment and Forestry (MoEF) of the Republic of Indonesia selected East Kalimantan as a pilot area for trialing a national REDD+ program under Forest Carbon Partnership Facility (FCPF). If it works, this pilot area will receive the payment of forest carbon services. Thus, East Kalimantan provincial government established the Green East Kalimantan strategy in 2010 to improve the natural resources and Green Growth Compact in 2016 to reduce carbon emission and increase economic growth by 8%. This paper estimated greenhouse gas (GHG) emissions before and after the REDD+ commitment implemented in the study area. The annual land… Lihat
2022 THE EFFECTIVITY OF CYSTEAMINE SUPPLEMENTATION ON IMPROVING THE IN VITRO FERTILIZATION RATE OF SHEEP OOCYTES Dona Astari Nurkarimah, Ekayanti Mulyawati Kaiin, Ni Wayan Kurniani Karja, and Mohamad Agus Setiadi The purpose of this study was to evaluate the effectiveness of cysteamine supplementation on the maturation medium and/or in vitro fertilization medium with regards to improving the normal fertilization rate of sheep oocytes, which are characterized by the formation of two pronuclei. Grade A and B oocytes were matured in medium-199 with 0.3% bovine serum albumin (BSA), 10 IU/mL follicle stimulating hormone (FSH), 10 IU/mL human chorionic gonadotrophin (hCG), and 50 μg/mL gentamicin added for 24 hours in a 5% CO2 incubator at 39° C. The treatment group was divided into the following groups: a control group with no cysteamine… Lihat
2022 Even-denominator fractional quantum Hall state in conventional triple-gated quantum point contact Mohammad Hamzah Fauzi,Yasuaki Hayafuchi, Ryota Konno, Annisa Noorhidayati, Mohammad Hamzah Fauzi, Naokazu Shibata, Katsushi Hashimoto, and Yoshiro Hirayama The even-denominator states have attracted considerable attention owing to their possible applications in future quantum technologies. In this letter, we first report a 3/2 diagonal resistance, indicating the existence of a 3/2 state in a nanometer-sized triple-gated quantum point contact (QPC) fabricated on a high-mobility (not ultra-high-mobility) single-layer two-dimensional (2D) GaAs wafer. The center gate plays a crucial role in realizing the QPC's 3/2 state. Our observation of the 3/2 state using a conventional QPC device, which is a suitable building block for semiconductor quantum devices, paves a new path for the development of semiconductor-based quantum technologies. Lihat
2022 Designed protein multimerization and polymerization for functionalization of proteins Dani Permana,Herlian Eriska Putra,Djaenudin Multimeric and polymeric proteins are large biomacromolecules consisting of multiple protein molecules as their monomeric units, connected through covalent or non-covalent bonds. Genetic modification and post-translational modifications (PTMs) of proteins offer alternative strategies for designing and creating multimeric and polymeric proteins. Multimeric proteins are commonly prepared by genetic modification, whereas polymeric proteins are usually created through PTMs. There are two methods that can be applied to create polymeric proteins: self-assembly and crosslinking. Self-assembly offers a spontaneous reaction without a catalyst, while the crosslinking reaction offers some catalyst options, such as chemicals and enzymes. In addition, enzymes are excellent catalysts because… Lihat