KEDAULATAN TANAH BERBASIS KEARIFAN LOKAL DESA REJOAGUNG KECAMATAN SEMBORO KABUPATEN JEMBER

AbstrakPenelitian ini bertujuan untuk mengetahui adanya Keunikan kearifan lokal hukum adat sebagai salah satu bentuk cara mempertahankan Identitas dan kedaulatan tanah di desa rejoagung kecamatan semboro Kabupaten Jember, Adapun Metode yang di pakai dalam penelitian ini menggunkan metode kualitatif dengan dengan teknik triangulasi data. Hasil dari penelitian Kepemilikan dan pengelohan tanah dalam perjalanannya berkorelasi dengan adat budaya masyarakatnya, terdapat peraturan adat yang sangat dipatuhi oleh masyarakat Desa Rejoagung secara turun-temurun dalam rangka menjaga identitas sebagai desa wisata rohani dan kedaulatan tanahnya yaitu larangan agar tidak menjual tanahnya kepada penduduk luar desa, jika terpaksa dijual harus mengikuti aturan desa yang sudah diberlakukan. Larangan ini merupakan sebuah larangan yang tidak tertulis namun sangat dipatuhi dan dijalankan hingga sekarang oleh masyarakat Desa Rejoagung sehingga aturan adat tentang pertanahan di Desa Rejoagung dapat menjadi langkah preventif untuk menghindari perselisihan tanah di Indonesia.Kata Kunci: Kearifan Lokal Rejo Agung, Kedaulatan tanah AbstractThis study aims to determine the uniqueness of local wisdom of customary law as a form of how to maintain the identity and sovereignty of the land in the village of Rejoagung, Seboro district, Jember Regency. The method used in this study uses qualitative methods with data triangulation techniques. The results of the reseach Land ownwership and management in its journey are correlated with the cultural customs of the community, there are customary regulations that are strictly obeyed by the people Rejoagung Village from generation to generation in order to maintain their identity as spiriyual tourism village and the sovereignty of their land, namely the prohibition not to sell their land to residents outside the village., if forced to be sold must follow the village rules that have been enforced. This prohibition is an unwritten prohibition but is strictly adhered to and carried outby the people of Rejoagung Village so that customary rules regarding land in Rejoagung can be preventive measure to avoid land disputes in Indonesia.Keywords: Local Wisdom Rejoagung Village, Sovereignty of the Lan

Pembuatan Silika High Grade dari Fly Ash Sawit dengan Proses Ekstraksi dan Cation Exchange

One alternative raw materials manufacture of high grade silica is using palm oil mill fly ash. This research aimed to study the effect of temperatureprocess, time and the ratio mass of zeolite and obtain optimum conditions cation exchange process (Fe) in a solution of sodium silicate with raw material palm oil mill fly ash. Palm oil mill fly ash is heated using oven at 105° C for 24 hours. Then fly ash reacted with 1,4N NaOH solution at 105° C for 50 minutes. Then obtained sodium silicate solution is reacted with Na-zeolite. The results of the optimization then precipitated using 10% H2SO4 and derived solidsilica. XRF analysis results showed solid silica has a purity of 96.129%

Pengaruh Kadar Minyak Kelapa terhadap Morfologi Sifat Thermoset Rubber dengan Filler Abu Sawit - Carbon Black

Plasticizer and filler have important role to making thermoset rubber. The function of plasticizer is to assist spreading process of filler in rubber and to improve elasticity of thermoset rubber. Meanwhile function of filler is to increase mechanical properties of thermoset rubber. The purpose of this study is to obtain the best conditions of the vulcanization process in the manufacture of thermoset rubber with coconut oil as plasticizer and fly ash/carbon black as filler hybrid, whichis the variation of cococnut oil content are 2,5 phr, 5 phr and 7,5 phr and filler hybrid FA/CB content are 30 and 50 phr with ratio 100/0 , 50/50 and 30/70. The results of thermoset rubber will be tested, it's mecanical properties such as tensile strength, elongation at break, tension set, abrasion, hardness, and water absorption also thermoset rubber morphology. Based on average yield mecanical properties and morphology tested is obtained that the best conditions vulcanizationprocess is thermoset rubber with coconut oil content 5 phr and filler hybrid content of 30 phr with ratio FA/CB of 30/70. The best mechanical properties was given on tensile strength 24,8 MPa, elongation at break 816 %, tension set 2,17%, hardness 54±5 shore A, abrasion resistance 0,14 mm3/kg and also for water absorption 0,59

Evaluasi Pressure Drop pada Sumur Injeksi Uap di Lapangan Duri dengan Persamaan Beggs-Brill dan Moody

Steam injection is a heat transfer process to petroleum reservoir through multiphase flow of wet steam. Estimating pressure drop in multiphase flow is more difficult than for single-phase flow. Multiphase flow is a complex phenomenon because of the interdependence of various variables that affecting pressure drop such as flow regime, hold up, flow geometry at horizontal, vertical or deviated, flow rate of each phase and the fluid properties of each phase. The purpose of this study is to find out the most appropriate model to calculate the pressure drop in steam injection wells and understand parameters that most affecting pressure drop. Research methodology for this study is descriptive analysis. Field data from 30 injection wells in Duri field are collected and compared with 2 variations of Beggs-Brill and Moody equation, which are the original model and the model with Palmer correction. Both models are translated into a simple computing program using Excel application. Calculation result from the model is compared with the measurement results to understand the deviation or error. As the result of this study, it is shown that Beggs-Brill and Moody model without Palmer correction is suitable for steam injection application. Average error is only 0,2% with a standard deviation of 3,32%. Further information is obtained from the sensitivity analysis that the accuracy of pressure drop calculation is affected by measurement accuracy of the steam flow rate, steam quality and steam temperature

Pemanfaatan Limbah Abu Terbang (Fly Ash) Batu Bara sebagai Bahan Campuran Beton Geopolimer

Fly ash can be used in the manufacture of concrete geopolimer. The replacement of the use of cement with fly ash can reduce the cost of manufacture of concrete and can reduce global warming posed from the production of cement. This research aims to know the influence of the use of fly ash, variations in concentrations of KOH and Na2SiO3/KOH ratio relationships against the concrete compressive strength of concrete geopolimer and test the level of immobilisasi of heavy metals contained in concrete geopolimer. Geopolimer synthesized from fly ash using a mixed solution of KOH and Na2SiO3. The solution is prepared the day before use. Initially prepared a solution of KOH with concentrations of 8 M, 10 M, 12 M, 15 M and Na2SiO3/KOH ratio 0.8; 1.2; 1.6; 2.0. These materials are mixed while stirring and inserted into the mold cylinder diameter 4 cm height 8 cm. Batter the already hardened issued and in the dry at a temperature of 80оC for 24 hours, then the samples were dried at room temperature for 21 days, then performed a test of strong press, porosity and heavy metal content. Test result showed a strong increase with added press Molarity KOH and Na2SiO3/KOH ratio, strongly press the highest 30.26 MPa produced on the molar ratio of 14 m and Na2SiO3 KOH/KOH 2.0. Instead, the porosity obtained decreased with increasing molar NaOH and KOH Na2SiO3/ratio. The lowest porosity 6.49% obtained in Molarity KOH 14 and Na2SiO3/KOH ratio is 2.0. Concrete geopolimer able to immobilize heavy metals found in the fly ash with either. Metal Pb reduced from 8,954 mg/L be 0.66 mg/L, the metal Cr reduced from 6,978 mg/L be 2.096 mg/L, Cu Metal reduced from 12.355 mg/L be 7.350 mg/l. so as to meet the Government Regulation Number 101 by 2014

Kinetika Reaksi Deasetalisasi Sintesa Kitosan dengan Pendekatan Shrinking Core Model (SCM)

Chitosan is poly (2-amino-2-deoxy-β- (1-4) -D-glucopyranose) with molecular (C8H11NO4)n which produced from chitin of ebi waste through deacetylation process. Chitosan can be synthesized from ebi waste using chemical methods through deproteinasi, demineralization and deacetylation. Research procedure was begining with the size reduction of ebi waste into powder size. Then the powder was treated with NaOH 3.5% (deproteinasi), the ratio of deproteinasi 1:10 (w / v) for 2 hours and the stirring speed of 150 rpm. Deproteinasi product was treated with HCl 1 N (demineralization), the ratio of demineralization 1:15 (w / v) for 1 h and the stirring speed of 150 rpm. Demineralised product was reacted using 50% NaOH (deacetylation), the ratio of deacetylation 1:25 (w / v) at a speed of 100.150 stirring, and 200 rpm with a temperature of 120 ° C for 2 hours. Samples were taken every 10 minutes rise as much as 10 mL, washed until pH neutral and dried. Deacetylation degree of chitosan analyzed using acid-base titration method. By the range between in the stirring speed of 100-200 rpm it proved that the faster some mixing the bigger it is of deacetylation of chitosan is between 74,54%-83,14%. Reaction kinetics model suitable to describe the events that occur in the synthesis of chitosan was a model that was a layer 2 results (chitosan) to control

Sintesis Coating Copper-Cobalt Oksida pada Substrat Aluminium melalui Proses Sol Gel sebagai Solar Selective Absorber : Pengaruh Rasio Molar Cu/Co dan Ketebalan Coating

Solar selective absorber (SSA) is a layer which is selective to absorb solar radiation and convert it into maximum heat energy. The purpose of this research is to synthesize the SSA based on copper nitrate and cobalt nitrate precursor, to determine the influence of molar ratio and dipping times number to absorptance, and emittance of SSA using the sol gel dip coating method.. Aluminum plates with size of 2x4cm2 were cleaned using phosphoric acid 10% by volume at temperature ±50oC for 10 minutes and then washed again with distilled water. Sol precursor was prepared by mixing copper nitrate and cobalt nitrate in ethanol solvent and the addition of propionic acid as catalyst and complexing agent. This solution was stirred at room temperature for 2 hours. The coatings were synthesized by varying molar ratio of [Cu]/[Co] of 0,25; 1; and 4 with the number of dipping 1-10 times. The coatings then were annealed at temperature of 550oC for 1 hour. Reflectance spectra in the UV-Vis-NIR show that an increasing number of dipping and decreasing in the molar ratio of [Cu]/[Co] improved the absorptance (). SSA layer with best absorptance i.e. 84,788% is synthesized using precursors with a molar ratio of 4 at 10 dipping times, and emittance (ε) generated amount 8,999%