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Penerapan Model Pembelajaran Inkuiri Terbimbing Untuk Meningkatkan Keterampilan Proses Sains (KPS) Siswa Sekolah Dasar Rahmani Rahmani; Abdul Halim; Zulkarnain Jalil
Jurnal Pencerahan Vol 10, No 2 (2016): September 2016
Publisher : Majelis Pendidikan Daerah (MPD) Aceh dan Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.114 KB) | DOI: 10.13170/jp.10.2.5213

Abstract

The aim of the study was to determine the improvement of student science process skills in the material properties of the light after applying the guided inquiry learning model. The hypothesis of the study was the application of the guided inquiry learning model can improve the student science process skills in the material properties of the light. The quasi-experimental was used in this study and one group pre and post tests design was performed.  The population of this study was all fifth-grade students of primary school (SD) Negeri 37 Banda Aceh in 2014/2015 school year, amounting to 30 students. All of the population members were used as the samples. The test and questionnaire were used to collect the data.  The students were given the pretest and posttest learning using the same instrument at the beginning and end of the study. The data were subjected to the  statistical t-test. Based on the results of normality and homogeneity test data, it was obtained that data are normal and homogeneous. The results showed that science process skills were obtained that t = 29.1274, while the value table = 1.6827. Therefore tcount t-table then Ho was rejected and Ha was accepted. Hence, it is concluded that the application of guided inquiry learning model can improve the science process skills of students in the material properties of the light
Synthesis of Natural Hydroxyapatite from Aceh’s Bovine Bone Nurul Fadhilah; Irhamni Irhamni; Zulkarnain Jalil
Journal of Aceh Physics Society Volume 5 Number 2, September 2016
Publisher : PSI-Aceh

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Abstract

Telah dilakukan penelitian yang mengkaji tentang sintesis hidroksiapatit berbasis tulang sapi lokal Aceh. Kandungan kalsium (CaO) di dalam tulang sapi dapat dimanfaatkan untuk mensintesis hidroksiapatit. Pada penelitian ini, hidroksiapatit disintesis dari tulang sapi yang telah dicuci bersih dan dihilangkan dari lemak  dengan menggunakan NaOH. Tulang sapi dikeringkan dan dikalsinasi terlebih dahulu pada temperatur 1000oC selama 2 jam. Tulang sapi kering kemudian ditumbuk hingga dihasilkan serbuk. Untuk mendapatkan ukuran partikel yang seragam, serbuk tulang sapi dimilling dengan kecepatan putaran 250 rpm selama 5 jam sehingga dihasilkan serbuk tulang sapi murni yang berukuran nano. Kemudian serbuk dikarakterisasi menggunakan XRD (X-Ray Diffraction) untuk membuktikan terbentuknya fasa CaO. Serbuk CaO yang telah terbentuk disintesa menjadi hidroksiapatit menggunakan metode solid statereaction dengan cara menambah asam posfat. Selanjutnya, serbuk CaO dan asam posfat disintering pada temperatur 900oC selama 2 jam. Penentuan fasa hidroksiapatit ini dilakukan dengan melakukan pengujian XRD. Berdasarkan hasil pengujian XRD, fasa CaO dan hidroksiapatit telah berhasil terbentuk sempurna. The research that examines the synthesis hydroxyapatite of Aceh’s bovine bone has been done. Calcium oxide (CaO) in bovine bone can be used to synthesized hydroxyapatite. In this research, hydroxyapatite synthesized from bovine bone that washed clearly and removed from the fat with adding NaOH. Bovine bone dried and calcined first at temperature of 1000oC for 2 hours. Then, dried-bovine bone is granulated become a powder. For uniformity particle size, bovine bone powder was milled with a 250 rpm rotation speed for 5 hours to produce pure bovine bone powder in nano-sized. Then, the bovine bone powder was characterized using X-Ray Diffraction (XRD) to evidence that CaO phase has been formed. CaO powder will be syntehesized become hydroxyapatite using solid state reactiod method with adding phosphoric acid. Finally, powder CaO and phosphoric acid sintering at temperature of 900oC for 2 hours. Determination of hydroxyapatite phase is done by testing the XRD. Based on test results of XRD, CaO and hydroxyapatite phase has been successfully formed.
Estimation of Hydrogen Gas Production from Oxidation Process of Zirconium Cladding with Water Vapor in Fukushima Daiichi Nuclear Power Plant Unit One at Japan after Earthquake and Tsunami in 2011 Endang Lestari; Elin Yusibani; Zulkarnain Jalil; Asril Pramurtadi
Journal of Aceh Physics Society Volume 3 Number 1, March 2014
Publisher : PSI-Aceh

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Abstract

It has been an explosion at the Fukushima Daiichi NPP caused by the fusion reaction between hydrogen and oxygen. Hydrogen is believed to be generated one of which comes from the oxidation reaction between the fuel cladding and water vapor in the reactor core due to the failure of coolant (LOCA=Loos of Coolant Accident). This study aims to estimate the amount of hydrogen gas that accumulates in the reactor core theoretically by using a model based on equilibrium mole of a chemical reaction. The zirconium cladding material is set as a limiting reagent that limits the formation of hydrogen in the reactor core. The estimation results show that the amount of hydrogen accumulated in the reactor is directly proportional to the mass of the oxidized zirconium with water vapor. The amount of hydrogen that accumulates for one fuel rod reaches 0.018 kg, for one assembly is 1.10 kg and for overall at Unit One reaches 441 kg, which these results have been enough to blow up the reactor.
Analisis Aspek Aktivitas di Pangkalan Pendaratan Ikan (PPI) Sawang Ba’u Kabupaten Aceh Selatan Kurniawan Fazri; Rizwan Rizwan; Zulkarnain Jalil
Jurnal Ilmiah Mahasiswa Kelautan Perikanan Unsyiah Vol 3, No 3 (2018): Agustus 2018
Publisher : Universitas Syiah Kuala

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Abstract

ABSTRACT       Sawang Ba’ufishing landing base (PPI) is one of fishery ports type D in South Aceh district with the biggest catchment growth from 2012 to 2016. This study aims to determine the management of landing activities, marketing, development of units catching from 2012 to 2016, the development of volume and production value from 2012 to 2016 , as well as the relative indeks value of marketing quality. The method toward landing activity and marketing of catch and for data analysis using descriptive data analysis. From the result of study that has been done the landing activity of PPI Sawang Ba’ushows the occurrence of obstacles during the landing process that is the lack of dock capacity, harbor pool and the depth of harbor ponds that experience siltation in some parts, so that only ship sized above 30 GT landing on the dock while ship under 30 GT can perform the landing activities in middle of the harbor pool with the help of a boat. The types of fish are landed in PPI Sawang Ba’umore dominant pelagic fish such asindian sad (Decapterus russellii), indian mackerel (Rastrelliger kanagurta), mackarel tuna (Euthynnus affinis), dholpin (Coryphaena hippurus), skipjack tuna (Katsuwonus pelamis), yellow fin tuna (Thunnus albacares), sardine (Sardine hasirm), sardinella (Sardinella longiceps). While the marketing activity is fairly smooth only the marketing procees is done not through the auction system in the places of fish sales so the fisherman’s income is not maximal. The relativeindex value of marketing quality in PPI Sawang Ba’u shows value equal to one which mean that the quality of marketing is some with the quality of marketing at the district level which means that the catch in PPI Sawang Ba’u is not homogeneus.Keywords:catch, Marketing, landing, PPI Sawang Ba'u.ABSTRAK       Pangkalan Pendaratan Ikan (PPI) Sawang Ba’u merupakan salah satu pelabuhan perikanan tipe D yang ada di kabupaten aceh selatan dengan perkembangan jumlah tangkapan terbesar dari tahun 2012 – 2016. Penelitian ini bertujuan untuk mengetahui pengelolaan aktivitas pendaratan, pemasaran, perkembangan unit penangkapan dari tahun 2012 – 2016, perkembangan volume dan nilai produksi dari tahun 2012 – 2016 serta nilai indeks relatif kualitas pemasaran. Metode yang di gunakan dalam penelitian adalah metode kasus terhadap aktivitas pendaratan dan pemasaran hasil tangkapan dan untuk analisis data menggunakan analisis data deskriptif. Dari hasil penelitian yang telah di lakukan Aktivitas pendaratan PPI Sawang Ba’u menunjukan terjadinya hambatan pada saat proses pendaratan yaitu kurangnya kapasitas dermaga, kolam pelabuhan serta kedalaman kolam pelabuhan yang mengalami pendangkalan di beberapa bagian. sehingga hanya kapal berukuran diatas 30 GT yang melakukan pendaratan di dermaga sementara kapal di bawah 30 GT dapat melakukan aktivitas pendaratan di tengah kolam pelabuhan dengan bantuan boat. Jenis ikan yang di daratkan di PPI Sawang Ba’u lebih dominan ikan pelagis seperti ikan layang (Decapterus russellii), ikan kembung (rastrelliger kanagurta), ikan tongkol (Euthynnus affinis), ikan lemadang (Coryphaena hippurus), ikan cakalang (katsuwonus pelamis), ikan tuna (Thunnus albacares), ikan sardin (Sardine hasirm)  dan ikan lemuru (Sardinella longiceps). Sementara pada aktivitas pemasaran terbilang lancar hanya saja proses pemasaran yang dilakukan tidak melalui sistem lelang di TPI sehingga pendapatan nelayan tidak maksimal. Nilai indeks relatif kualitas pemasaran di PPI Sawang Ba’u menunjukan nilai sama dengan 1 yang artinya kualitas pemasaran tersebut sama dengan kualitas pemasaran tingkat kabupaten yang artinya hasil tangkapan di PPI Sawang Ba’u tidak bersifat homogen.Kata kunci: Hasil tangkapan, Pemasaran, pendaratan, PPI Sawang Ba’u.
Ukuran Butir dan Sortasi Sedimen Pada Sungai Gampong Leungah Kabupaten Aceh Besar Harry Handoko; Zulkarnain Jalil; Syahrul Purnawan
Jurnal Ilmiah Mahasiswa Kelautan Perikanan Unsyiah Vol 2, No 2 (2017): April 2017
Publisher : Universitas Syiah Kuala

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Abstract

Sediment distribution in the river of Gampong Leungah was conducted to describe the sediment condition in the river bottom. Samples were taken at 10 stations which were divided into river stream and estuary area. Coring method was applied to collect sediment samples using modified 2.5 inch of PVC tube. Approximately of 10 cm of sediment thickness from surface were used for further processed using sieving analysis. We found that river stream area has a coarser sediment particle with better sorted sediment compared to estuary area. The input sediment materials from shore area resulting mixed sediment condition as generated to the poorer sortation condition in estuary. Distribusi sedimen sungai di Gampong Leungah dilakukan untuk menggambarkan pola sebaran sedimen yang terjadi di daerah tersebut. Pengambilan sampel sedimen dilakukan pada 10 stasiun yang terbagi pada daerah aliran sungai dan daerah muara Pengambilan sampel sedimen dilakukan dengan metode coring yang menggunakan pipa paralon berdiameter 2,5 inch dengan panjang 40 cm. Sampel yang digunakan dalam identifikasi adalah lapisan sedimen dengan ketebalan 10 cm dari permukaan. Karakteristik sedimen pada daerah aliran sungai lebih kasar dan sortasi yang lebih baik di bandingkan dengan sedimen yang berada di daerah muara. Adanya percampuran dengan sedimen pantai membuat daerah muara memiliki kondisi sortasi yang lebih buruk.
Studi Tingkat Pemanfaatan Fasilitas Pokok Pelabuhan Perikanan (PP) di Sawang Ba’u, Kabupaten Aceh Selatan Ahmad Faisa; Zulkarnain Jalil; Rian Juanda
Jurnal Ilmiah Mahasiswa Kelautan Perikanan Unsyiah Vol 4, No 1 (2019): Februari 2019
Publisher : Universitas Syiah Kuala

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Abstract

ABSTRACTThe study of the utilization rate of the fishery port in Sawang Ba'u, Sawang subdistrict, Aceh Selatan District has been conducted, Aceh province. The research aims were to determine the level of utilization of the fishery facilities. The research scope was examining the utilization rate of basic facilities with three facilities namely the pier, swimming and land. The research was conducted in April 2018 using a direct survey method through primary data retrieval and secondary data. The Data obtained is analyzed by comparison of the classification available in PP Sawang Ba'u with regulation of Maritime Minister and Fisheries No. 8 year 2012 and the formula of General fisheries capture year 1984. In this research also made several frameworks of thought and various trees beginning analysis of each facility that is in the analysis includes Port dock data, the vast data of the port pool also land port that reference data sources originating from the port Fisheries and Marine Service and fisheries. The results showed that the utilization rate of landing docks and high-stirreed pools (105.25%) On the landing dock and on the swimming pool (≥ 100%), while the land utilization is still low (39.4%). Based on the results it needs to be done development of main facilities, especially the jetty and swimming pool because it exceeds the existing capacity to facilitate the activity of the movement of the ship in order not the occurrence of demolition delays. So that it can cause a decrease of the quality of fish until the fishermen lose on the catch, while on the port land is still needed optimization to be more optimal and done development gradually by formalizing the land. Owned by local residents must be claimed by the government and allocate new developments for local residents.Keywords: Sawang Ba’u fishing port, utilization rate, basic facilities, level of needs ABSTRAKTelah dilakukan penelitian tentang studi tingkat pemanfaatan fasilitas pokok Pelabuhan perikanan di Sawang Ba’u, Kecamatan Sawang, Kabupaten Aceh Selatan, Provinsi Aceh. Penelitian ini bertujuan untuk mengetahui tingkat pemanfaatan fasilitas pokok pelabuhan perikanan dan pada penelitian kali ini ruang lingkup yang akan diteliti terhadap tingkat pemanfaatan fasilitas pokok dibatasi dengan tiga fasilitas yaitu dermaga, kolam labuh dan lahan. Penelitian dilakukan pada bulan April 2018 dengan menggunakan metode survey langsung melalui pengambilan data primer dan data sekunder. Data yang diperoleh dianalisis melalui perbandingan klasifikasi yang tersedia di PP Sawang Ba’u dengan peraturan menteri kelautan dan perikanan no.8 tahun 2012 dan formula dirjen perikanan tangkap tahun 1984. Pada penelitian ini juga dibuat beberapa kerangka pemikiran dan berbagai pohon permulaan analisis tiap fasilitas yang di analisis mencakup data dermaga pelabuhan, data luas kolam pelabuhan juga lahan pelabuhan yang acuan sumber data berasal dari pihak pelabuhan perikanan dan dinas kelautan dan perikanan. Hasil penelitian menunjukkan bahwa tingkat pemanfaatan dermaga pendaratan dan kolam labuh sanggat tinggi masing-masing (105,25%) pada dermaga pendaratan dan pada kolam labuh (≥ 100%), sedangkan pemanfaatan lahannya masih rendah (39,4%). Jadi berdasarkan hasil penelitian tersebut perlu dilakukan pengembangan fasilitas utama khususnya dermaga dan kolam labuh karena melebihi kapasitas yang ada guna untuk memperlancar aktivitas gerak olah kapal agar tidak terjadinya keterlambatan pembongkaran sehingga hal tersebut dapat menyebabkan penurunan mutu ikan hingga nelayan merugi pada hasil tangkapannya, sedangkan pada lahan pelabuhan masih diperlukan optimalisasi agar lebih optimal dan dilakukan pengembangan secara bertahap dengan meresmikan tanah yang dimiliki warga setempat harus di klaim pemerintah dan di alokasikan pembangunan baru untuk warga setempat.Kata Kunci: Pelabuhan Perikanan Sawang Ba’u, tingkat pemanfaatan, fasilitas pokok, tingkat kebutuhan.
THE EFFECT OF MAGNETITE (Fe3O4)CATALYST FROM IRON SANDS ON DESORPTION TEMPERATURE OF MgH2 HYDROGEN STORAGE MATERIAL Maulinda Maulinda; zulkarnain Jalil; Adi Rahwanto
Jurnal Natural Volume 16, Number 1, March 2016
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.14 KB) | DOI: 10.24815/jn.v16i1.4362

Abstract

One of the future technologies for a safe hydrogen storage media is  metal hydrides. Currently, Mg-based metal hydride has a safety factor and efficient for vehicle applications. However, the thermodynamic properties of magnesium hydride (MgH2) found a relatively high temperature. High desorption temperatures caused MgH2 high thermodynamic stability resulting desorption enthalpy is also high. In this study, natural mineral (iron ore) has been extracted from iron sand into powder of magnetite (Fe3O4) and used as a catalyst in an effort to improve the desorption properties of MgH2. Magnetie has been successfully extracted from iron sand using precipitation method with a purity of 85 % , where the purity of the iron sand before extracted was 81%. Then, MgH2-Fe3O4 was milling using mechanical alloying method with a variety of catalysts and milling time. The observation by XRD showed the material was reduced to nanocrystalline scale. MgH2 phase appears as the main phase. DSC test results showed with the addition of Fe3O4, the desorption temperature can be reduced up to 366oC, compared to pure pure MgH2 reached by 409o C. Furthermore, based on gravimetric test, the hydrogen release occurs at a temperature of 388o C, weight loss  of 0.66 mg during 16 minutes.
Analysis of Crystallinity and Physical Properties of the Bio-solar Gemstone Ismail Ismail; Akmal NIzar; Murzal .; Zulkarnain Jalil
Aceh International Journal of Science and Technology Vol 8, No 3 (2019): December 2019
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.466 KB) | DOI: 10.13170/aijst.8.3.13800

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Abstract – Bio-solar is one of the natural gemstones found in the province of Aceh in Indonesia. A recent study suggested that this gemstone could be considered as a vesuvianite type of gemstone. Nevertheless, detail information of this bio-solar gemstone is still unknown. We do not know whether the bio-solar gemstone is crystalline or amorphous. The specific gravity and the hardness of this gemstone are also still unknown. This information is essential to determine the quality of a gem. To answer those questions, we have used x-ray diffraction to study the bio-solar gemstone from the province of Aceh in Indonesia. The physical properties (specific gravity and hardness) of this gemstone have also been measured. We found that the bio-solar gemstone is composed by CaO, SiO2, MgO, Al2O3, Fe2O3, and TiO2 phases. Our results revealed that the bio-solar gem is a crystalline material, not amorphous. The average crystallite size of this gemstone is found to be 353 Å (35 nm). Moreover, the specific gravity of bio-solar gemstone is found to be 3.09 – 3.34. Its hardness is 3 to 4 mohs. Thus, the bio-solar is a good quality gemstone. Our finding confirmed that the bio-solar could be classified as a vesuvianite gemstone.
Heavy metal content in pumpkin pond of Kutaraja Fishing Port Banda Aceh Muhammad Muhammad; Shelly Anggi Pratiwi; Thaib Rizwan; Zulkarnain Jalil
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.104 KB) | DOI: 10.13170/depik.10.2.20943

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Fishing port scan support fishery resources management by incorporating social-economic activities to improve the local community's welfare; however, it can also negatively impact the environment by increasing waste pollution to the surrounding waters. Kutaraja Fishing Port, Banda Aceh, is one of the active fishing ports that conduct multiple activities, such as industrials, transportations, and domestic activities threatening the environment through the production of pollution such as heavy metals. The purpose of this study is to determine the concentration of heavy metals Zinc (Zn) and Chromium (Cr) and the sediment contamination level in the Kutaraja Fishing Port, Banda Aceh. This research was conducted in February 2021 at the water site of Samudra Kutaraja Fishing Port, Banda Aceh, and sampled sediments using the purposive sampling method. Samples were then analyzed for heavy metal concentration using the Atomic Absorption Spectrophotometer (AAS) instrument in the laboratory of the Aceh Industrial Research and Standardization Center (BARISTAND). The results showed that the concentration of heavy metal Zn ranged from 15.6507 - 27.2939 mg/kg. The majority of heavy metal Cr concentrations were below the test limit of 0.000, except at station 2, which was 9.1212. Both heavy metal concentrations are still categorized as low contamination criteria and still below the Australian and New Zealand Environment and Conservation Council (ANZECC, 2000) and the Canadian Council of Ministers for the Environment (CCME, 2002). This research proved that both heavy metals do not threaten the biota and have a low contamination level in the waters.Keywords:SedimentHeavy metal (Zn)Heavy metal (Cr)Atomic-absorptionSpectro-photometerAssessment
PENERAPAN PEMECAHAN MASALAH MODEL POLYA UNTUK MENINGKATKAN KEMAMPUAN ANALISIS DAN HASIL BELAJAR PADA MATERI VEKTOR DI SMAN 1 DARUL IMARAH Zahriah Zahriah; M. Hasan; Zulkarnain Jalil
Jurnal Pendidikan Sains Indonesia Vol 4, No 1 (2016): APRIL 2016
Publisher : Universitas Syiah Kuala

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Materi vektor sangat penting untuk dipahami di awal proses pembelajaran fisika, tetapi pemahaman tentang vektor sering tidak mencapai skala ketuntasan minimal. Penelitian ini mencoba melihat potensi penggunaan pemecahan masalah model Polya dalam meningkatkan kemampuan analisis dan hasil belajar siswa pada materi vektor di SMA. Metode yang digunakan adalah kuasi eksperimen dengan desain “pretes-postest control group design” menggunakan kelompok kontrol. Penelitian dilakukan terhadap siswa kelas X pada SMAN 1 Darul Imarah di Kabupaten Aceh Besar tahun ajaran 2015/2016. Hasil penelitian menunjukkan  persentase rata-rata N-gain kemampuan analisis pada kelas eksperimen 62,59% dengan kategori sedang dan pada kelas kontrol 27,53% dengan kategori rendah. Persentase N-gain hasil belajar pada kelas eksperimen 37,61% dengan kategori sedang dan kelas kontrol 26,39% dengan kategori rendah. Hal ini menunjukkan bahwa penggunaan pemecahan masalah model Polya dapat lebih meningkatkan kemampuan analisis dan hasil belajar dibandingkan model pembelajaran yang hanya berbasis pada ceramah. Siswa pada kelas eksperimen memberikan respon yang positif terhadap setiap aktivitas belajar yang menunjukkan adanya peningkatan motivasi belajar dan dorongan untuk berpikir secara lebih terstruktur dalam pemecahan masalah.