Physical, Chemical, and Functional Characteristics of Composite Flours from Banana Corm and Tempeh

AbstractThis study aimed to determine composite flour's physical, chemical, and functional properties from Sumedang Roid banana corm and tempeh. The sample consisted of five different treatments with ratios of banana corm flour to tempeh flour 100:0, 0:100, 80:20, 70:30, and 60:40. The research data were analyzed using a Randomized Block Design and the Duncan Multiple Range Test (DMRT) at 5% level. Parameters observed included bulk density, color degree, ash content, moisture content, carbohydrate content, fat content, protein content, and pasting properties. The results showed that composite flour with a ratio of banana corm flour to tempeh flour of 60:40 could produce the best composite flour characteristics with a bulk density of 0.44 g/ml, color degree L* 67.86, a* 5.64 and b* 23.34, 5.47% ash content, 8.66% moisture content, 57.60% carbohydrates content, 10.62% fat content, 17.64% protein content, pasting temperature 80.86 °C, peak viscosity 1,265.33 cP, hold viscosity 858.00 cP, final viscosity 1,109.00 cP, breakdown viscosity 407.33 cP, setback viscosity 251.0 cP. The produced composite flour is suitable to be applied on biscuits, cookies, and semi-moist cakes.Keywords: banana stem, composite, flour, Roid banana, tempeh AbstrakPenelitian bertujuan untuk mengetahui sifat fisik, kimia, dan fungsional tepung komposit dari bonggol pisang Roid asal Sumedang dan tempe. Sampel terdiri lima perlakuan berbeda dengan rasio perbandingan tepung bonggol pisang dengan tepung tempe adalah 100: 0, 0:100, 80:20, 70:30, dan 60:40. Data hasil penelitian dianalisis dengan Rancangan Acak Kelompok dan uji lanjutan Duncan Multiple Range Test (DMRT) pada taraf 5%. Parameter pengamatan meliputi densitas kamba, derajat warna, kadar abu, kadar air, kadar karbohidrat, kadar lemak, kadar protein, dan karakteristik pasting. Hasil penelitian menunjukkan bahwa tepung komposit dengan rasio tepung bonggol pisang dengan tepung tempe 60 : 40 mampu menghasilkan karakteristik tepung komposit terbaik dengan densitas kamba 0,44 g/ml, derajat warna L* 67,86, a* 5,64 dan b* 23,34, kadar abu 5.47%, kadar air 8,66%, kadar karbohidrat 57,60%, lemak 10,62%, protein 17,64%, pasting temperature 80,86 °C, peak viscosity 1265,33 cP, hold viscosity 858,00 cP, final viscosity 1.109,00 cP, breakdown viscosity 407,33 cP, setback viscosity 251,0 cP. Tepung komposit yang dihasilkan tersebut sesuai untuk diaplikasikan pada produk biskuit, kukis, dan kue semi basah.Kata kunci: bonggol pisang, komposit, pisang Roid, tempe, tepung

Development of Nationwide Vs30 Map and Calibrated Conversion Table for Indonesia using Automated Topographical Classification

A nationwide Vs30 map for Indonesia was developed based on automated topographic classification from 90-m grid digital elevation data and their correlation with Vs30. Automated topographic classification has been proposed by Iwahashi and Pike (2007) and a procedure to convert topographic class into Vs30 maps has been developed by Imamura and Furuta (2015) based on Vs data from J-SHIS (Japan Seismic Hazard Information System). In order to be suitable for Indonesia, calibration work according to Imamura and Furuta's procedure should be conducted since the geotechnical conditions in Japan may not be the same as in Indonesia. This paper presents adjustment of the Vs30 correlation by Imamura and Furuta to convert topographic class into Vs30 and construct a Vs30 map of Indonesia. This correlation was calibrated by using Vs data from BMKG (Indonesian Agency for Meteorological, Climatological, and Geophysics) as well as standard penetration test logs that were collected by the authors. Utilization of local field measurement data will certainly enhance the reliability of the Vs30 map. The developed nationwide Vs30 map will be very useful for disaster mitigation programs and for preliminary design of earthquake resistant buildings and infrastructure in Indonesia

Social Media and Impression Management of Governors During the COVID-19 Pandemic

The COVID-19 pandemic has placed enormous demands on leaders in the public sector. Regional politicians have two interests: conveying information related to handling the pandemic and convincing the public that they are competent in handling the crisis. Through impression management on social media, regional leaders seek to achieve these two goals. This study aimed to find out what impression management tactics were used by regional heads in Indonesia during the pandemic through social media. This study used the Leader Impression Management Framework to analyze the contents of posts on the official Instagram accounts of four governors in Indonesia, namely West Java Governor Ridwan Kamil, DKI Jakarta Governor Anies Baswedan, Central Java Governor Ganjar Pranowo and East Java Governor Khofifah Indar Parawansa, during the early period of the pandemic. The results showed that the four governors used impression management tactics in varied ways, but there were similarities in the main tactics used to manage their impressions. The findings raised theoretical and practical implications about the leaders’ methods of communication to the public during the pandemic. Keywords: social media, impression management, leadership, governor, pandemi

Bacillus subtilis JW1 enhances plant growth and nutrient uptake of Chinese cabbage through gibberellins secretion

In the present study, we have isolated rhizospheric bacteria JW1 from rice paddy in Andong, South Korea. The culture filtrate (CF) analysis of JW1 showed higher contents of gibberellins GA1, GA4, GA7, organic acids, fatty acids and tricalcium phosphates. The 16S rDNA gene sequencing and phylogentic analysis revealed that thestrain JW1 has a 99% homology with Bacillus subtilis sequences from BLAST search.The growth promotion capability of the strain JW1 was initially assessed on Waito-C and Whayoung-beyo rice cultivars, which improved the growth attributes of the rice cultivars. Similarly, a significant increase in plant height, biomass, chlorophyll contents and nutrient uptake have been noticed, when the Chinese cabbage was treated with JW1 strain. From the results, it is concluded that the integrative use of B. subtilis JW1 can promote plant growthby secreting bioactive compounds. Therefore, B. subtilis JW1 may be utilized as an eco-friendly bio-fertilizer in the agricultural fields after successful field trials

Assessment of endophytic fungi cultural filtrate on soybean seed germination

Soybean seeds have high amount of isoflavones but its germination is often confronted with a variety of environmental problems resulting in low germination rate and growth. To overcome this in eco-friendly manner, we investigated the influence of cultural filtrate (CF) of gibberellins-producing endophytic fungi on soybean seed germination. Three endophytic fungi namely: Chrysosporium pseudomerdarium, Aspergillus fumigatus and Paecilomyces sp. were previously isolated from the roots of soybean plants. The culture filtrate application of the three endophyte resulted in significantly higher rate of soybean seed germination, germination percentage, relative seed germination percentage, peak value, germination value, shoot and root length, germination index and vigour index. Among the endophytes, A. fumigatus significantly increased the rate of germination, shoot and root length and vigour index. Same trend was noted in germination percentage and relative seed germination percentage for all the endophytic fungi. However, C. pseudomerdarium was the only one that enhanced germination index. The enhanced soybean seed germination by endophytes can be used for seed priming and hence improved crop plant growth under extreme environmental conditions.Key words: Chrysosporium pseudomerdarium, Aspergillus fumigatus, Paecilomyces sp., soybean, seed germination

Aplikasi Interaktif Pembelajaran Aksara Jawa

Aksara Jawa merupakan salah satu peninggalan budaya yang tak ternilai harganya. Dalam upaya ikut menjaga peninggalan budaya, suatu media pembelajaran tentang aksara Jawa dapat dihadirkan dengan memanfaatkan teknologi komputer berbentuk multimedia interaktif. Salah satu perangkat lunak yang sangat mendukung dalam penerapannya adalah Macromedia Flash CS3. Permasalahan dalam penelitian ini adalah bagaimanakah merencanakan, membuat atau memproduksi dan menguji perangkat lunak berupa multimedia interaktif untuk pembelajaran aksara Jawa dengan Macromedia Flash CS3 . Sasaran dari pengguna media pembelajaran ini adalah kalangan umum bagi siapa saja yang memebutuhkan. Tujuan dari pembuatan media pembelajaran ini adalah untuk membantu pembelajaran aksara Jawa dengan pokok bahasan sejarah aksara Jawa dalam cerita ajisaka, aksara carakan beserta pasangan, sandhangan, aksara murda, aksara swara, aksara rekan, angka Jawa, tanda baca serta evaluasi yang dikembangkan dengan Macromedia Flash CS3 . Media pembelajaran aksara Jawa dapat memberikan konstribusi bagi dunia pendidikan, khususnya peaenfaat teknologi bagi pendidika. Selain itu aplikasi juga memberikan konstribusi dalam upaya pelestarian aksara Jawa berbentuk teknologi multimedia.

Contribution of Synoptic Transients to the Potential Predictability of PNA Circulation Anomalies: El Niño versus La Niña

Abstract The potential predictability (PP) of seasonal-mean 200-hPa geopotential height (Z200) anomalies in the Pacific–North American (PNA) region is examined for El Niño and La Niña separately by using 50 ensemble members of twentieth-century AGCM simulations. Observed sea surface temperature (SST) is prescribed for the period 1870–2009, and 14 El Niño and La Niña years after 1900 are selected for the present study. The domain-averaged value of PP for Z200 in the PNA region, as measured by the signal-to-noise ratio, for El Niño is about 60% larger than that of La Niña. Such a large PP is mainly due to a larger signal and partly to less noise during El Niño compared to that during La Niña . The transient eddy feedback to the PNA circulation anomalies is stronger during El Niño events (about 50%) than that during La Niña, and this difference in the transients contributes significantly to the different Z200 signals in the PNA region. The noise variance of the transients during El Niño is about 17% smaller than during La Niña, and thus transients play an important role in the reduction of Z200 noise during El Niño. Idealized experiments with the same spatial pattern but different signs of SST anomalies confirm the results mentioned above. Moreover, these experiments with several different amplitudes of positive and negative phases of tropical Pacific SST anomalies show that signals of Z200 and transients are proportional to precipitation anomalies in the tropical Pacific, and noises of Z200 for El Niño cases are somewhat smaller than the corresponding values of La Niña

PELATIHAN PENGOLAHAN ALPUKAT MENJADI KERUPUK

Abstract. This Community Service (PkM) aims to provide training for inhabitant of Tidore Islands, Afa-Afa Village, to process avocados into crackers. Avocado was chosen because this fruit is very abundant in Afa-afa, even avocados often rot when the harvest season comes, another reason because this fruit has a high nutritional value. Therefore, this activity is the initiation of processing avocados into products that have a higher economic value or selling value. This training was held on July 24, 2021. The parties involved were the PkM team from Khairun University, Inhabitant of afa-afa Village. The number of participants is 24. PkM method are the opening ceremony, presentation of training materials, discussions for sharing between presenters and participants, as well as direct demonstrations on how to make crackers. Second, the product is avocado crackers. There are two results of this PkM, first is the description of the method and the description of the product. The product is avocado crackers. The hallmark of this crackers is the presence of a bitter taste in the crackers, the way to counteract the bitter taste is to add sugar to the cracker dough or you can also add wet sugar after the crackers are fried.Abstrak. Kegiatan pengabdian kepada Masyarakat (PkM) ini bertujuan untuk memberikan pelatihan kepada masyarakat Kepulauan Tidore Keluarahan Afa-Afa guna mengolah alpukat menjadi kerupuk. Alpukat dipilih karena buah ini sangat melimpah di daerah Afa-afa, bahkan seringkai buah alpukat membusuk jika musim tiba, alasan lain karena buah ini memiliki nilai gizi yang tinggi. Oleh karena itu kegiatan ini sebagai inisiasi pengolahan alpukat menjadi produk yang memiliki nilai ekonomis atau nilai jual yang lebih tinggi. Pelatihan ini dilaksanakan pada tanggal 24 Juli 2021. Pihak yang terlibat adalah tim  PkM dari Universitas Khairun, pihak kelurahan afa-afa dan PKK Afa-afa. Jumlah peserta adalah 24 orang. Metode Pelaksanaan PkM adalah pembukaan, presentasi materi pengolahan kerupuk, diskusi dengan peserta pelatihan, demonstrasi pembuatan kerupuk. Hasil dari kegiatan ini berupa deskripsi tentang pelaksanaan kegiatan dan deskripsi tentang produk berupa kerupuk alpukat. Ciri khas dari produk kerupuk alpukat ini adalah adanya rasa pahit pada kerupuk, cara untuk mentaktisi rasa pahit adalah pemberian gula pada adonan kerupuk atau bisa juga memberikan gula basah setelah kerupuk digoreng.

Tungsten-based ultrathin absorber for visible regime

Utilizing solar energy requires perfect absorption of light by the photovoltaic cells, particularly solar thermophotovoltaics (STPVs), which can be eventually converted into useful electrical energy. Ultrathin nanostructures, named metasurfaces, provide an intriguing platform to develop the miniaturized solar energy absorbers that can find potential applications in integrated photonics, optical sensing, color imaging, thermal imaging and electromagnetic shielding. Therefore, the quest of novel materials and designs to develop highly efficient absorbers at minuscule scale is an open topic. In this paper, novel absorbers using tungsten-metasurface are developed which give ultrahigh absorbance over a wide frequency spectrum. The proposed designs are two-dimensional, polarization insensitive, broadband and are predicted to give better response under high temperatures ascribed to high melting point of tungsten i.e. 3422 degrees C. Amongst these designs, cross alignment is found optimum for tungsten, because it is impedance matched with the free space for visible spectrum. This cross arrangement is further tweaked by changing width, height and length resulting in 7 different optimized solutions giving an average absorbance greater than 98%. One, amongst these solutions, gave a maximum average absorbance of 99.3%.114Nsciescopu