Pengembangan electronic module (e-module) berorientasi multipel representasi kimia pada materi ikatan kimia

Pandemi COVID-19 menyebabkan peserta didik melakukan pembelajaran mandiri, sehingga sangat membutuhkan media pembelajaran. Kurangnya pemahaman konsep peserta didik pada materi ikatan kimia yang bersifat abstrak menjadi salah satu permasalahan dalam pembelajaran kimia. Pengembangan media belajar berupa e-module berorientasi multipel representasi kimia pada materi ikatan kimia dilakukan untuk mengatasi kurangnya media belajar. Penelitian dilaksanakan di SMA Negeri 3 Bangko Pusako dengan menggunakan metode Research and Development (R&D) model 4-D yang hanya dilakukan sampai tahap develop saja. Teknik pengumpulan data berupa wawancara dan penyebaran instrumen angket uji kelayakan dan kepraktisan. Aspek penilaian produk mencakup syarat didaktik, konstruksi, dan teknis. Data hasil uji kelayakan produk oleh ahli media sebesar 88,23%, uji kelayakan ahli materi sebesar 80% dan uji kepraktisan oleh dua guru mata pelajaran sebesar 80% serta respon kepraktisan oleh peserta didik mendapatkan persentase sebesar 88,66%. Hasil penelitian menunjukkan bahwa e-module berorientasi multipel representasi kimia dinyatakan layak dan praktis dimanfaatkan sebagai media belajar

Hubungan Koleksi Tercetak Perpustakaan dengan Kepuasan Pemustaka di Perpustakaan SMA Negeri 4 Bandung (Studi deskriptif di SMA Negeri 4 Bandung)

Masalah yang menjadi kajian dalam penelitian ini adalah hubungan koleksi tercetak dengan kepuasan pemustaka di Perpustakaan SMA Negeri 4 bandung, bagaimana koleksi tercetak yang ada di Perpustakaan SMA Negeri 4 Bandung, dan kepuasan pemustaka di Perpustakaan SMA Negeri 4 Bandung. Inti kajiannya difokuskan kepada salah satu faktor yang memiliki hubungan dengan kepuasan pemustaka yaitu koleksi tercetak perpustakaan dengan kepuasan pemustaka. Berdasarkan hal tersebut, pokok masalah yang diungkapkan peneliti dalam penelitian ini adalah seberapa besar hubungan koleksi tercetak perpustakaan SMA Negeri 4 Bandung sebagai variabel bebas terhadap kepuasan pemustaka sebagai variabel terikat. Metode dalam penelitian ini menggunakan metode penelitian survey/deskriptif dengan pendekatan kualitatif dan teknik penelitian korelasional. Berdasarkan hasil analisis data diketahui koleksi tercetak berhubungan kuat terhadap kepuasan pemustaka dengan nilai korelasi sebesar 0,756. Hasil pengujian hubungan koleksi tercetak terhadap kepuasan pemustaka menunjukkan indikator buku teks memiliki korelasi sebesar 0,719 dengan derajat hubungan berada pada kategori kuat, indikator kamus memiliki korelasi sebesar 0,551 dengan derajat hubungan berada pada kategori sedang, indikator ensiklopedia memiliki korelasi sebesar 0,687 dengan derajat hubungan berada pada kategori kuat. --- The problem of this research is about The relationship of printed collection with user satisfaction in Library Of SMA Negeri 4 Bandung, how the printed collection in Library Of SMA Negeri 4 Bandung, and user satisfaction in Library of SMA Negeri 4 Bandung. The point of this research depend on one of the factor that has user satisfaction with printed collection with user satisfaction. Based on this problem, the point of this research describe about how much the relationship of printed collection against the relationship of user satisfaction. The method in this study uses the method of research survey/descriptive with qualitative and research correlational technical. Based on the result of data analysis about printed collection strongly related to user satisfaction with value 0,756. Test result of printed collection relation to user satisfaction shows indicators textbooks have a correlation of 0,719 with the degree of relationship in the strong category, dictionary indicators have a correlation of 0,551 with a degree of relationship in the category of being, encyclopedia indicator has a correlation of 0,687 with a degree of relationship in the strong category

GENETIC OF Panulirus versicolor LOBSTER IN CENDRAWASIH BAY PAPUA AND LOMBOK WATERS WEST NUSA TENGGARA

The purpose of this study was to determine the level of diversity and genetic relationship of Panulirus versicolor lobsters in Cenderawasih Bay and Lombok waters based on the cytochrome oxidase I (COI) gene. The results showed the level of genetic diversity of the two populations was very high and generally did not differ greatly between populations. We identified 6 haplotypes for P. versicolor lobster populations from Cenderawasih Bay and 7 haplotypes for P. versicolor lobster populations from Lombok waters. Network analysis shows that several P. versicolor lobster individuals from the Cendeawasih Bay and Lombok waters had similar haplotypes. The population of Cenderawasih Bay with Lombok waters was closely related to the average genetic distance value P-distance 0.005 (s.d 0.001) and the results of phylogenetic tree reconstruction showed that the two populations of P. versicolor lobsters form a monophyletic clade (close relatives)

PERAMALAN (FORECASTING) POTENSI PENDAPATAN ASLI DAERAH KOTA SUMBAWA BESAR BERBASIS DESKTOP (Studi Kasus di Dinas Pajak Daerah dan Pengelolaan Keuangan Kota Sumbawa Besar)

Pemerintah daerah diharapkan lebih mampu menggali sumber-sumber keuangan khususnya untuk memenuhi kebutuhan pembiayaan pemerintahan dan pembangunan di daerahnya melalui Pendapatan Asli Daerah (PAD). Seiring dengan meningkatnya jumlah penerimaan pendapatan ataupun sebaliknya diperlukan adanya Peramalan (Forecasting) terhadap jumlah penerimaan pendapatan untuk tahun berikutnya. Peramalan ini menggunakan metode Regresi Linier dengan 5 variabel yang merupakan data historik dari pendapatan asli daerah selama 5 tahun. Data historik yang dipakai merupakan data pendapatan asli daerah kota Sumbawa Besar dari tahun 2008 sampai dengan 2012. Penelitian ini akan membuat aplikasi peramalan pendapatan asli daerah kota Sumbawa Besar dengan menggunakan bahasa pemrograman JAVA yang akan digunakan untuk mengetahui seberapa besar hasil peramalan dalam 5 tahun berikutnya. Sehingga dapat membantu dalam menganalisis potensi pendapatan asli daerah dan untuk bahan pertimbangan mengambil keputusan atau kebijakan dalam usaha peningkatan jumlah pendapatan. Kata kunci: Pendapatan Asli Daerah (PAD), Peramalan (Forecasting), Regresi Linier, Sumbawa Besar, JAV

Pembesaran Ikan Nila (Oreochromis niloticus) pada Budidaya Sistem Resirkulasi Menggunakan Filtrasi Tanaman Hydrilla verticillata dan Ceratophyllum demersum

Penelitian ini mengkombinasikan tanaman Hydrilla verticillata dengan Ceratophyllum demersum sebagai filter pada budidaya ikan Nila sistem resirkulasi. Tujuan penelitian yaitu untuk mengetahui tingkat pertumbuhan ikan Nila pada budidaya sistem resirkulasi. Filtrasi yang digunakan pada budidaya sistem resirkulasi yaitu tanaman H. verticillata dan C. demersum. Metode penelitian menggunakan rancangan acak lengkap (RAL). Adapun parameter yang diamati berupa kelangsungan hidup ikan, pertumbuhan mutlak, laju pertumbuhan spesifik (SGR), Feed Conversion Ratio (FCR) dan kualitas air. Kelangsungan hidup ikan selamat pemeliharaan yaitu 100%. Pertumbuhan bobot mutlak individu berkisar 8.76 sampai 16.6 gr/minggu. Laju pertumbuhan spesifik ikan Nila berkisar 2.74 sampai 4.49%. Nilai FCR sangat bagus yaitu 1.2 dan rata-rata nilai suhu, pH dan DO masih pada kisaran yang layak untuk pertumbuhan ikan Nila. Selama pemeliharaan hanya dilakukan satu kali pergantian air. Budidaya sistem resirkulasi tersebut sangat efektif dan efesien untuk diterapkan, terutama pada wilayah dengan ketersediaan air yang terbatas.This study combined Hydrilla verticillata with Ceratophyllum demersum as a filter in the recirculation system of Tilapia aquaculture. The research objective was to determine the growth rate of tilapia in the recirculation system culture. The filtration used in the recirculation system was H. verticillata and C. demersum. The research method used a completely randomized design (CRD). The parameters observed were fish survival, absolute growth, specific growth rate (SGR), Feed Conversion Ratio (FCR) and water quality. The survival of the fish survived the maintenance of 100%. Individual absolute weight growth ranged from 8.76 to 16.6 g / week. The specific growth rates of tilapia ranged from 2.74 to 4.49%. The FCR value is very good, namely 1.2 and the average temperature, pH and DO values ​​are still in the proper range for the growth of tilapia. During maintenance, only one water change is carried out. Cultivation of the recirculation system is very effective and efficient to apply, especially in areas with limited water availability

aspek biologi dan pemetaan daerah penangkapan lobster panulirus spp di perairan kampung akudiomi distrik yaur kabupaten nabire

Penelitian ini dilakukan pada bulan Maret sampai April 2014 di kampung Akudiomi yang dikenal sebagai perairan Kwatisore Kabupaten Nabire Provinsi Papua. Tujuan dari penelitian ini, untuk mengetahui komposisi jenis, mengukur panjang-berat, meng-iventarisasi nelayan lokal dan memetakan daerah penangkapan lobster. Metode yang digunakan adalah metode deskriptif dengan teknik observasi, pengambilan sampling dan wawancara. Pemetaan dan identifikasi hubungan parameter oseanografi perairan (suhu, salinitas, kedalaman dan pH) di daerah penangkapan lobster untuk mengetahui pengaruhnya terhadap ketersediaan sumberdaya lobster. Hasil identifikasi diperoleh 3 jenis lobster yang tertangkap oleh nelayan di perairan kampung Akudiomi yaitu P. versicolor berjumlah 111 ekor, P. longipes dan Thenus spp masing-masing berjumlah 1 ekor. Pendugaan pola pertumbuhan lobster dilakukan hanya pada P. versicolor yang merupakan spesies dominan tertangkap oleh nelayan. Panjang karapas P. versicolor berkisar 8-13 cm dan berat berkisar 250-1,097 gr/ekor. Pola hubungan panjang karapas dan berat lobster P.versicolor menunjukkan nilai korelasi positif atau searah terhadap pertumbuhan dengan nilai korelasi 0.8636, koefisien ini bernilai positif (mendekati 1). Berdasarkan analisis pola pertumbuhan P. versicolor diperoleh persamaan , maka pola pertumbuhan relative bernilai yang berarti allometrik negatif artinya pertumbuhan panjang lebih cepat dari pada pertumbuhan berat. Analisis regresi menunjukan bahwa suhu, kedalaman, salinitas dan pH berpengaruh nyata terhadap variasi hasil tangkapan lobster di perairan kampung Akudiomi. Faktor oseanografi yang berpengaruh signifikan terhadap hasil tangkapan lobster adalah suhu, salinitas dan pH

Environmental DNA metabarcoding reveals biodiversity marine fish diversity of a small island at Manokwari District, West Papua, Indonesia

Environmental DNA metabarcoding reveals biodiversity marine fish diversity of a small island at Manokwari District, West Papua, Indonesia. Biodiversitas 23: 5982-5988. The uniqueness of small island biodiversity becomes very important to study. Molecular approaches to collecting biodiversity information are currently quite developed. Manokwari district, which is located at the head of Papua Island, Indonesia, has very diversity of marine resources, especially coral reef fish. Currently, we successfully identified marine fish in the coral reef fish ecosystem of Lemon and Mansinam Island. Environmental DNA on Lemon Island and Mansinam Island was successfully carried out. This small island area is located in Manokwari District, Papua, which has a high biodiversity potential, including fishery resources. The MiFish pipeline is used in this Metabarcoding approach by combining water samples from Lemon Island and Mansinam Island. We filtered 1 liter of marine water and pool together from fourteen sampling sites for genomic DNA extraction. A total of 101,001 reads (88.31%) were assigned to 34 species. From the environmental DNA metabarcoding analysis results, the Pomacentridae (8 species), which are reef fish, dominate in this area. Besides, Acanthuridae, Carangidae, and Lutjanidae were identified in this area, which as coral reef fish associates. The results of this environmental DNA also identified 2 species from the Family Scombridae, namely Gymnosarda unicolor and Thunnus obesus. This information is expected to support the sustainable management of the Lemon Island and Mansinam Island Areas for tourism and conservation activities

Seismic microzonation of Bandung basin from microtremor horizontal-to-vertical spectral ratios (HVSR)

Bandung is located on a thick sedimentary basin, which is mainly composed of volcanic rocks and the depositional remnants of an ancient lake. The high population density and vital infrastructure, surrounding by potential sources of earthquakes make Bandung vulnerable to earthquake impact. To study the seismic response of Bandung, a microzonation study is needed so as to facilitate disaster risk assessment and mitigation. The parameters which are mapped for the purpose of microzonation are the distribution of the dominant frequency (F0), the amplification factor (Am) and seismic susceptibility (Kg). We use the HVSR analysis method with microtremor/ambient seismic noise data. The microtremor data were taken from 58 measurement points from the Bandung Seismic Experiment network run from March to October 2014 in the Bandung basin and surrounding areas. The results show that the dominant peak frequency in the studied area ranges from 0.195 Hz to 7.016 Hz, amplification (A) spans from 1.6 to 11.3, and the value of the seismic susceptibility index (Kg) ranges from 0.6 to 245.6. The spatial distribution of seismic susceptibility index indicates that almost all areas of the Bandung basin have high susceptibility to earthquake hazard. The highest susceptibility is found in the eastern part of the Bandung basin that includes Bojongsoang, Rancaekek, Ciparay, Rancasari, and Majalaya, while the lower susceptibility zones are scattered in the hills and mountains around the basin of Bandung

SEIZMIČKO MODELIRANJE NA PODRUČJU OTOKA SUMATRE I NJEGOVE OKOLICE, INDONEZIJA, POMOĆU P-VALNE SEIZMIČKE TOMOGRAFIJE LOKALNIH I REGIONALNIH POTRESA

Sumatra Island and its surroundings, Indonesia, are one of the most active tectonics in the world. The Aceh-Andaman earthquake, one of the most destructive earthquakes in the world, occurred there. It has attracted many earth scientists to apply various methods, including seismic tomography, to understand the island’s subsurface structure and tectonic system. This study is the first to delineate subsurface imaging beneath the island and its surroundings using a local-regional earthquake catalogue from the Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG) seismicnetwork. The tomographic imaging of P-wave (Vp) conducted in this study has successfully delineated subduction slabs (high Vp), partial melting zones (low Vp), volcanic arcs (low Vp), and Sumatran Fault zones (low Vp). The relationship between the subduction zone and the volcanic arc on the island can be seen on several vertical sections where a partial melting zone occurs at a depth of about 100 km, which functions as magma feeding for some volcanoes on the island. The oceanic slab model also exhibits a more pronounced and steeper slope towards the southern regions of Sumatra Island, possibly attributed to the slab’s aging process in that direction. The results highlight the importance of the BMKG seismic network in imaging local-regional subsurface structures beneath Indonesia’s archipelago, especially for the main islands such as Sumatra.Otok Sumatra i njegova okolica, Indonezija, jedno su od najaktivnijih tektonskih područja na svijetu. Tamo se dogodio potres Aceh-Andaman, jedan od najrazornijih potresa na svijetu. Privukao je mnoge znanstvenike koji su u svojim istraživanjima primijenili različite metode, uključujući seizmičku tomografiju, kako bi razumjeli podzemnu strukturu i tektonski sustav otoka. Ova studija prva je koja prikazuje model podzemlja ispod otoka i njegove okolice koristeći se lokalno-regionalnim katalogom potresa iz seizmičke mreže Indonezijske agencije za meteorologiju, klimatologiju i geofiziku (BMKG). Tomografski model brzine P-valova (Vp), uspješno je razgraničio subduciranu ploču (velika brzina P-valova), zonu djelomičnoga taljenja (mali Vp), vulkanski luk (mali Vp) i rasjedne zone Sumatre (mali Vp). Odnos između subdukcijske zone i vulkanskoga luka na otoku može se vidjeti na nekoliko vertikalnih presjeka gdje se na dubini od oko 100 km javlja zona djelomičnoga taljenja koja služi kao izvor magme za neke vulkane na otoku. Model oceanske subducirane ploče također pokazuje izraženiji i strmiji nagib prema južnim regijama otoka Sumatre, što se vjerojatno može pripisati procesu starenja ploče u tome smjeru. Rezultati naglašavaju važnost BMKG seizmičke mreže u identifikaciji lokalno-regionalnih podzemnih struktura ispod indonezijskoga arhipelaga, posebno za glavne otoke kao što je Sumatra