25 research outputs found

    The quality of audit opinion does not affect the level of corruption in the East Java provincial government

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    Abstract This study aims to analyze the role of the Audit Board of Indonesia (BPK) in reducing and preventing corruption in the local government. The focus of the research discussion is the case of corruption that occurred in the 2016-2018 period. The data came from the regional government of East Java Province, which consists of 9 cities and 29 regencies, based on the number of corruption cases and BPK audit results in each area. The independent variable used was the results of the BPK audit on the Regional Government of East Java Province, which consisted of audit findings and audit opinions. The dependent variable was the level of corruption in the East Java regional government handled by the Attorney General's Office. This study used a panel data regression analysis model. The results of the study showed that audit opinions and BPK audit findings had no significant effect on the level of corruption cases in the regional government of East Java Province.AbstrakPenelitian ini bertujuan untuk menganalisis peran BPK dalam mengurangi dan mencegah terjadinya korupsi pada pemerintah daerah. Fokus pembahasan penelitian adalah kasus korupsi yang terjadi pada periode tahun 2016-2018. Data berasal pemerintah daerah Provinsi Jawa Timur yang terdiri dari 9 kota dan 29 kabupaten, berdasarkan jumlah kasus korupsi dan hasil audit BPK pada setiap masing-masing daerah. Variabel independen yang digunakan adalah laporan hasil audit BPK pada Pemerintah Daerah Provinsi Jawa Timur yang terdiri dari temuan audit dan opini audit. Variabel dependen adalah jumlah korupsi pemerintah daerah Jawa Timur yang ditangani oleh Kejaksaan. Penelitian menggunakan model analisis regresi data panel. Hasil penelitian menunjukkan bahwa opini audit dan temuan audit tidak berpengaruh signifikan terhadap tingkat kasus korupsi di pemerintah daerah Provinsi Jawa Timur

    Development of Progressive Perforation Failure Model for Improving Sand Rate Prediction

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    Formation sand production has been a recurring problem for the oil and gas industry since the advent of the hydrocarbon exploration and extraction. The effects of sand production are adverse in nature and are two folds; causing decrease in well productivity (due to sand control measures) and erosion of equipments. High strength rocks rarely disintegrate and produce sand, even if they do it is very late in the life of the well. Soft and weak rocks may produce sand very early in the life of the well and thus will need sand control measures. Intermediate strength rocks need to be evaluated for their sand production potential. As a producer, the endeavor is to extend hydrocarbon production without employing any sand control measures. A robust estimate of onset and the rate of sand production will provide the necessary information to regulate the operation schedule such that no or little sand production occurs throughout the life of the well. The same analysis will also furnish the operator with appropriate information on completions and sand control techniques to employ in case of excessive sand production predictions. In this study, a coupled finite element numerical sand rate model is developed which is calibrated with poly-axial sand production experiments. The effect of stress anisotropy on the onset of sand production and the rates of sand production is evaluated. Sand production is a moving boundary problem hence adaptive meshing is employed. It is found that increase in axial and lateral anisotropy would make the rock more susceptible to sand production. The onset is found to be earlier in these cases. Also, the sand rates are higher with higher anisotropies. A field study is also presented which reaffirms the need of sand rate calculation. The numerical model is made in such a way that different completion schemes can be tried and tested for sand rate results

    Prediction of Estimated Ultimate Recovery in the Eagle Ford

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    The study presents prediction of Estimated Ultimate Recovery (EUR) for multi-stage hydraulically fractured horizontal wells producing primarily oil in the Eagle Ford. The EUR prediction models’ comparison for the multi-stage hydraulically fractured horizontal wells in the Eagle Ford is made possible with the help of advances in neural networks. The monthly production and well data is collected for oil producing wells (1,134) drilled in 2010-11 in the Eagle Ford from Drilling Info Desktop. The models were trained using Multiple Linear Regression (MLR), Support Vector Machine (SVM) and Bayesian Regularized Neural Networks (BRNN). These models learn the relationship between well data and the EUR (estimated by decline curve analysis). Furthermore, these models were tested on the data not used in the training of the models. A model selection algorithm is formulated which produced a median absolute error of 22%. The models were trained and tested using Eagle Ford shale oil production data but the methodology and code should be applicable to other resource plays as well. This method could be useful for predicting the performance of various unconventional reservoirs for both oil and gas as a quick-look tool. As an advice for further work this tool can be used to prepare forecasts for unconventional gas reservoirs as well and combined with the oil forecasts to present a more holistic view

    Green synthesis, characterization and optimization of silver nanoparticles using honey and antimicrobial study with food supplements

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    Nanotechnology is an emerging field with a vast role in health, cosmetics and industrial applications worldwide. Nanoparticles of silver varying from 1 to 1000 nm are referred to as silver nanoparticles. In the current study, an attempt has been made for the first time to synthesize silver nanoparticles from two varieties of honey available in sultanate of Oman. The existence of silver nanoparticles was identified by UV visible spectroscopy, which showed a characteristic peak at 450 nm. By varying concentration of silver nitrate, honey, pH and temperature, optimization studies for synthesis of nanoparticles were carried out. These parameters play a vital role not only in synthesizing silver particles, but also help to stabilize the nanoparticles. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM), studies were carried out on the nanoparticles to understand their shape, size, structure and optical properties. Antimicrobial studies of silver nanoparticles with honey individually and synergistic effect in combination with food supplements showed significant zone of inhibition against gram-positive and gram-negative bacteria. These findings revealed that honey-based nanoparticles with food supplements could be used effectively to control common diseases

    Green synthesis, characterization and optimization of silver nanoparticles using honey and antimicrobial study with food supplements

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    150-157Nanotechnology is an emerging field with a vast role in health, cosmetics and industrial applications worldwide. Nanoparticles of silver varying from 1 to 1000 nm are referred to as silver nanoparticles. In the current study, an attempt has been made for the first time to synthesize silver nanoparticles from two varieties of honey available in sultanate of Oman. The existence of silver nanoparticles was identified by UV visible spectroscopy, which showed a characteristic peak at 450 nm. By varying concentration of silver nitrate, honey, pH and temperature, optimization studies for synthesis of nanoparticles were carried out. These parameters play a vital role not only in synthesizing silver particles, but also help to stabilize the nanoparticles. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM), studies were carried out on the nanoparticles to understand their shape, size, structure and optical properties. Antimicrobial studies of silver nanoparticles with honey individually and synergistic effect in combination with food supplements showed significant zone of inhibition against gram-positive and gram-negative bacteria. These findings revealed that honey-based nanoparticles with food supplements could be used effectively to control common diseases

    Analisis Penggunaan Media Pembelajaran PAI UIN Sumatera Utara Pada Masa Pandemi Covid-19

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    Penelitian ini bertujuan melihat pemanfaatkan teknologi pada saat pembelajaran daring pada saat masa pandemi Covid-19, penulis melihat penerapan proses penyajian materi pembelajaran daring di Jurusan PAI Universitas Islam Negeri Sumatera Utara. Media pembelajaran yang digunakan Dosen seperti WhatsApp, Zoom Meeting, Youtube, Goggle Clasroom. Penelitian ini menggunakan metode kualitatif menggunakan metode yang kami gunakan yaitu studi Pustaka. Tujuan penelitian ini untuk memaksimalkan proses pembelajaran dan penyampaian materi kepada mahasiswa, agar dapat meningkatkan pengetahuan dan kompetensi mahasiswa setelah proses pembelajaran berakhir. Dari penelitian yang dilakukan dirumuskan bahwa teknologi sangat berperan penting dan memiliki banyak manfaat pada dunia pendidikan dengan penerapan pembelajaran jarak jauh pada masa pandemi Covid-19. Kesimpulan dari penelitian ini bahwa teknologi mampu menjadi wadah pada aspek media pembelajaran dengan banyaknya variasi aplikasi yang digunaka

    Synthesis, infrared and X-ray diffraction studies of mixed halogen sodalites and sodalites containing silver derivatives

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    942-946Low temperature hydrothermal technique has been employed for the synthesis of different mixed halogen sodalites of the type Na₈[AlSiO₄]₆Cl₂₋xBrx and Na₈[AlSiO₄]₆Br₂₋xIx (0 x <2). The competition between chloride, bromide and iodide is also studied for the formation of mixed sodalites. Infrared spectroscopy has been used successfully for the confirmation of the framework structure and dopant. Significant IR frequency changes are observed in the region of 300-1200 cm⁻¹ for symmetric, asymmetric and bending modes of vibration. This IR shift is found to be dependent on sample preparation. X-ray powder diffraction is used to establish the structure of mixed halogen sodalites. Further, silver containing derivatives, Na₈-xAgx[AlSiO₄]₆(MnO₄)₂ and Na₈-xAgx[AlSiO₄]₆(ClO₄)₂, are also obtained through aqueous ion exchange process. A relationship has been established between the amount of silver exchanged with IR frequency of asymmetric mode of vibration

    COMPARATIVE CARDIOTONIC ACTIVITY OF NEEM LEAF EXTRACT WITH DIGOXIN ON ISOLATED FROG HEART

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    Azadirachta indica has been used medicinally throughout history by many different cultures. Many compounds have been found in the exudates of the Azadirachta indica plant that have been used medically by humans. Present study was carried out to determine the cardiotonic activity by using infusion of Neem leafextractwith different dilutions & compared with cardiotonic activity of digoxin‐the life saving cardiotonic. The a ctivity was tested by using isolated frog heart assembly. The present preliminary studies confirm the better cardioton ic activity of Neem leaf extract than digoxin. Further studies can confirm the reduced toxicity & this will be the advantage of Neem leaf extract over digitalis. Thus,in future it will be interesting to isolate the active chemical constituents are responsible for the cardiotonic activity. Keywords: Cardiotonic activity, Digoxin, Neem leaf extract, isolated frog heart

    Solvothermal synthesis and crystal structure of aluminogermanate halide sodalites using organic solvent

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    576-582Solvothermal synthesis has been investigated for the crystallization of aluminogermanate sodalite containing halide (Cl, Br and I) in 50% ethyl alcohol at low temperature. It was found that 50% ethanol+ 50% water is good solvent system for sodalite. X-ray powder diffraction, IR, 27Al and 23Na MAS NMR, SEM and thermogravimetry are used to characterize these sodalites. The crystal structures show cubic symmetry in a space group P 3n and were refined by Rietveld refinement method. The unit cell parameter, a = 9.0641, 9.1049 and 9.1874Å and the corresponding Al-O-Ge angles are found to be 133.702, 135.346 and 137.628<span style="font-family:Symbol; mso-ascii-font-family:" times="" new="" roman";mso-hansi-font-family:"times="" roman";="" mso-char-type:symbol;mso-symbol-font-family:symbol"="" lang="EN-GB">° for chloro, bromo and iodo sodalite,respectively. The MAS NMR study confirms alternating Al and Ge ordering of sodalite framework. The thermal stability of guest anions in the sodalite framework was studied by thermogravimetric analysis. </span
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