e-Journal UIR (Journal Universitas Islam Riau)
e-Journal UIR (Journal Universitas Islam Riau)Not a member yet
4588 research outputs found
Sort by
Pelaksanaan Pengolahan Sampah Pada Dinas Lingkungan Hidup dan Kebersihan Kota Palembang
Get PDFThis study aims to analyze the waste management carried out by DLHK Palembang City. This study was a qualitative descriptive research. In collecting the research data, the writer conducted observation and interview, literature study and documentation. The results showed that the waste reduction activities implemented by the Environment and Sanitation Service Palembang were the establishment of Garbage Bank and TPS 3R, providing socialization and technical guidance on waste management to community, issuing appeals, circulars and socialization on reducing plastic waste to retail entrepreneurs, using tumblers, and restrictions on using plastic bags. The amount of waste made in Palembang in 2020 was 426,390.66 tones, with waste reduction (19.79%) and waste management (76.69%), managed waste (96.49%) and unmanaged waste (3.51%). The waste composition was dominated by food waste. There were obstacles in waste management, where the Garbage Bank, TPS 3R, waste collectors did not operate due to crowd restrictions, reduced volume of segregated waste from waste sources, and lack of public awareness in waste segregation and the use of re-useable product
Analysis of Wind Power Potential in Samiang Bay, Kotabaru, South Kalimantan
Get PDFThis research was conducted to determine the potential for wind power from the Tamiang Bay area, Kotabaru, South Kalimantan. This study uses data on the average daily wind speed in Tamiang Bay with latitude -4.058883°, longitude 116.050259° obtained from the European Center for Medium-Range Weather Forecasts (ECMWF). Based on the analysis that has been done, the average daily wind speed in Tamiang Bay is 4 m/s for a height of 10 m and 5.98 m/s for a height of 50 m. Through the assumption that using a Gamesa G114-2.5 MW wind turbine with a tower height of 80 m, in one year, the Tamiang Bay area has the potential to produce 2646.58 MWh of wind power. Thus, the Tamiang Bay area is said to be very potential for wind power development
ANALISIS MINAT BELAJAR SISWA MENGGUNAKAN DISCOVERY LEARNING PADA MATERI SISTEM PERIODIK UNSUR di SMA CENDANA PEKANBARU
Get PDFMinat belajar peserta didik imbas terhadap kegiatan serta akibat belajar peserta didik, dan pemilihan contoh pula sangat penting pada pembelajaran sebab dapat memberi pengaruh atas minat belajar murid pada pembelajaran. Tujuan penelitian ini artinya buat memahami minat belajar peserta didik memakai Discovery Learning di materi sistem periodik unsur pada Sekolah Menengan Atas Cendana Pekanbaru. Penelitian ini dilakukan di tahun ajaran 2022/2023 pada SMA Cendana Pekanbaru. Metode yang dipakai pada penelitian ini yakni deskriptif kuantitatif menggunakan sampel 30 peserta didik. Instrumen yang dupergunakan merupakan angket, wawancara serta observasi menggunakan indikator minat belajar yakni, keterlibatan murid, ketertarikan murid, perhatian murid serta perasaan senang murid. Hasil analisis data menghasilkan bahwa 22 peserta didik dalam kategori sangat tinggi dengan persentase 73% serta 8 peserta didik dalam kategori tinggi dengan persentase 27%. Empat indikator yg di uji menunjukkan bahwasanya keterlibatanpeserta didik 87%, perhatian peserta didik 87,7%, ketertarikan peserta didik 85,6% serta perasaan senang peserta didik 88,5%
Primary school physical education management: Profiles and predictors in Central Java
Get PDFEffective management allows teachers to see and handle student learning problems. This study aimed to determine the physical education management of elementary school teachers in Central Java and its predictors. This research is quantitative with data description and correlation. Using purposive sampling, the total number of respondents was 50 physical education teachers at the elementary level in Central Java. The data was processed using descriptive statistics, data normality, and correlation. The subjects studied had a minimum teaching experience of 1 year. Data collection techniques include instruments and observation by physical education teachers. The instruments included planning, implementation, and evaluation of physical education management. The questionnaire uses a scale of 1-4. In terms of age and length of teaching, researchers used correlation analysis. Correlation data were processed using SPSS Version 21. The management of physical education in Central Java is in the "good" category. Physical education management includes planning, implementation, and evaluation. Length of teaching and age are not predictors in physical education management. Most physical education teachers are linear and have at least a bachelor's degree. Further studies are needed involving many teachers and other variables to determine predictors. The results of this study contribute consideration, support, and contribution of ideas to stakeholders to improve the quality of physical education. The role of management is crucial in enhancing teachers’ ability to achieve educational goals in general.
 
DAMPAK IMPLIKASI SISTEM INFORMASI MANAJEMEN BAZNAS (SIMBA) PADA AKUNTABILITAS PENGELOLAAN ZAKAT DI KABUPATEN PROBOLINGGO
Get PDFBAZNAS merupakan suatu lembaga badan amil zakat nasional yang bertugas untuk menghimpun serta menyalurkan dana zakat kepada masyarakat yang berhak menerima. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh Sistem Informasi Manajemen BAZNAS (SIMBA) terhadap pengelolaan zakat di BAZNAS Kabupaten Probolinggo. Karena dalam penelitian ini hanya terdapat dua variabel terikat dan satu variabel bebas, maka strategi yang digunakan dalam penelitian ini adalah analisis regresi linier sederhana dan menggunakan analisis koefisien korelasi sederhana untuk memastikan seberapa besar hubungan antara kedua variabel tersebut. dan instrumen dalam program Statistical for the Social Sciences (SPSS). Sistem Informasi Manajemen BAZNAS (SIMBA), dari rancangan penelitian ini dapat menghasilkan bahwa dampak Implikasi Sistem Informasi Manajemen BAZNAS (SIMBA) terhadap pengelolaan zakat di BAZNAS Kabupaten Probolinggo belum sepenuhnya berpengaruh. Hal ini terlihat dari hasil penelitian yang menunjukkan bahwa implikasi SIMBA berdampak pada penghimpunan zakat sebesar 21,1% dan pendisdistribusian zakat sebesar 16,2%, sedangkan sisanya berdampak pada variabel lain sebesar 62,7%
1D Geomechanical Model For Wellbore Stability in Z Field, Y Well Sanga Sanga Working Area, Kutai Basin
Get PDFThis research is about 1D geomechanical model for wellbore stability in Z Field, Y Well Sanga Sanga Working Area, Kutai Basin where wells have been drilled. The Purpose of this Research is to analyze the stability of the well starting from knowing the stress regime that occurs, predicting the occurrence of wellbore failure, and determining safe mud weight window for next drilling. The method use in this Research is a numerical modelling method using log data and drilling data that has been obtained and then managed using Techlog Software. The result of this Research show the magnitude of mechanical properties of the rock that have been obtained, then in general the stress regime that occurs in the Z Field formation is the normal regime even though the strike slip and reverse regime are inserted at a certain depth, then based on the prediction results of failure in this well is wide breakout, which in general occurs in lithology with sandstone, finaly safe mud weight window can be estimated properly, so that it can be used for further well drilling. This research is about 1D geomechanical model for wellbore stability in Z Field, Y Well Sanga Sanga Working Area, Kutai Basin where wells have been drilled. The Purpose of this Research is to analyze the stability of the well starting from knowing the value of the mechanical properties of the formation, the stress regime that occurs, predicting the occurrence of wellbore failure, and determining safe mud weight window for next drilling. The method use in this Research is a numerical modelling method using log data and drilling data that has been obtained and then managed using Techlog Software. The result of this Research show the magnitude of mechanical properties of the rock that have been obtained, then in general the stress regime that occurs in the Z Field formation is the normal regime even though the strike slip and reverse regime are inserted at a certain depth, then based on the prediction results of failure in this well is wide breakout, which in general occurs in lithology with sandstone, finaly safe mud weight window can be estimated properly, so that it can be used for further well drilling
Ambient Noise Data Processing to Obtain Group Velocity for Subsurface Structure Identification: Preliminary Research in Hululais Geothermal Field, Sumatra, Indonesia
Get PDFHululais area lies in the pull-apart basins of the Ketaun Segment and Musi Segment fault as a part of the Sumatra Fault Zone (SFZ). The boundary normal faults of pull-apart basins play an important role as major discharge zones for geothermal fluid because the extensional stress is concentrated in the boundary normal faults. In order to identify the geothermal reservoir structure in Hululais Geothermal Field (HGF), we introduce the local-scale study of the Rayleigh wave group velocity structure using ambient noise tomography (ANT). The ANT studies were collected using 18 seismometers inside 12 km2 area with a spacing of 125 – 500 meters, deployed across the fault structure for 1 month. More than two thousand Rayleigh Green’s Functions are extracted by cross-correlation at available station pairs. Using the estimated green function in this preliminary research, the group velocity as a function of the period can measure the dispersion curve by using multiple filter technique (MFT) and fast marching surface tomography (FMST) scheme to obtain group velocity images. The tomography result as group velocity image shows the subsurface Rayleigh wave structure variation. The NW-SE main structure is reflected by the contrast velocity structure between the central part and the north eastern-south western sides. The central part shows the low periods which are associated with low wave velocity However the margin of the central part shows the high velocity in all periods. The ANT studies have been efficient in time and cost, however useful in subsurface structure interpretation in Hululais Geothermal Field
Identification of Reservoir Distribution Using Extended Elastic Impedance (EEI) Inversion in the "Z" Field of the Kutai Basin
Get PDFThis research was conducted using EEI inversion on seismic data in Z Field, Kutai Basin. The EEI inversion is effectively used to determine the reservoir distribution by eliminating the angle limit on the elastic impedance to the Chi angle so that it can be correlated with petrophysical parameters that are sensitive to lithology and fluids. The data used in this study are well data, checkshots, horizons, and partial-stack angle gather 3D seismic data. The data obtained is processed to obtain the target zone first based on log interpretation. Based on data processing, the target zone is obtained at 1513 m to 1531 m. Sensitivity analysis was conducted to determine the sensitive parameters, which can separate the lithology of the formation. In the sensitivity analysis, the most sensitive log to separate lithology is the Vp/VS log, which can separate sandstone, shale, and coal. Furthermore, the EEI inversion analysis was carried out to obtain the most suiTable model for the inversion, the Based Hard Constraint model was obtained with a correlation reaching 0.997 and an error value of 0.078. Based on the EEI inversion, the target zone in the Z-field at a depth of 1258 ms - 1269 ms with a sandstone reservoir in the EEI range of 6000 (m/s)(g/cc) - 7500 (m/s)(g/cc) which spreads from northeast to south. The distribution of the sandstone reservoir is surrounded by coal with a range of EEI 7500 (m/s)(g/cc) - 12000 (m/s)(g/cc), and also the distribution of shale in the EEI range of 7500(m/s)( g/cc) - 9200(m/s)(g/cc)
Analysis of Surfactant and Polymer Behavior on Water/Oil Systems as Additives in Enhanced Oil Recovery (EOR) Technology through Molecular Dynamics Simulation: A Preliminary Study
Get PDFThe decline in oil production has led to the development of the Enhanced Oil Recovery (EOR) technology to increase oil production. Chemical injection is one of the methods in EOR by injecting surfactants or polymers into reservoir wells. To understand the properties and dynamics of surfactants and polymers at the nanoscale, computational studies using molecular dynamics simulation were carried out. In this study, surfactant Sodium Dodecyl Benzene Sulfonate (SDBS) and polymers such as Polyacrylamide (PAM) were used to investigate their effect on the oil-water interface system at the atomic level. Molecular dynamics simulation was carried out using Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) to calculate the diffusion coefficient and Interface Formation Energy (IFE) value for the addition of the surfactant and polymers. The simulation results show that the addition of the surfactant and polymers affects the water-oil interface system differently. The diffusion coefficient results indicates that there are strong interactions between SDBS and dodecane with D of 0.01358. While for PAM, the interactions with water are more significant with D of 0.059. The results of the IFE calculation value also show that the addition of SDBS and PAM makes the water-oil interface system more stable with the negative IFE value of -197.51 and -13.13 Kcal/mol respectively. The results of this study will be used as a reference and a basis for designing new surfactants or polymers that will led to more oil recovery