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Understanding the formation damage surrounding the well during the drilling operation is the key to predict damage degree and protect the formation in oil/gas reserviors. Based on the core drainage results, we obtained an empirical... more
Understanding the formation damage surrounding the well during the drilling operation is the key to predict damage degree and protect the formation in oil/gas reserviors. Based on the core drainage results, we obtained an empirical relationship between the invasion volume of drilling fluid and permeability reduction of formation. Furthermore, the equation is incorporated into a commercial reservior numerical simulation simulator to characterize the behaviors of drilling fluid invasion process. The results show that, although the invasion depth in low permeability reservoirs is short with the range of 1.7–2.5 m, the effect on recovery factor is significant due to the narrow seepage area in the near fracture region. When considering the formation damage, the pressure in the near-fracture damage region drops sharply, leading to a three-stage shape in pressure distribution curve. In addition, we found that high viscosity and low density oil-based slurry and shorter soaking period are co...
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Brazil has a long tradition of bioethanol production from sugarcane. Following the Middle East crisis in the 1970s, the oil price increased twofold, doubling Brazil’s spending on oil imports. As a result, the country had to find an... more
Brazil has a long tradition of bioethanol production from sugarcane. Following the Middle East crisis in the 1970s, the oil price increased twofold, doubling Brazil’s spending on oil imports. As a result, the country had to find an alternative type of fuel to reduce its expenditure on conventional petrol fuels. With its vast tropical land conditions, the Brazilian government then put massive effort to establish the infrastructure and research of bioethanol from 1975 and 1989. Research plays a pivotal role in the success of Brazil’s ethanol industry. The country was heavily criticised at the beginning of the programme, but today, Brazil is the second-largest ethanol producer after the USA. Brazil produces the cheapest ethanol in the world and does not depend on fossil fuel to supply its energy demand. Indonesia and Brazil share the same landscape and geographical advantages. This paper aims to discuss the success of the Brazilian bioethanol industry and draw important lessons from it...
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With the completion of the report KKP / PP, then the author can draw the conclusionthat the use of data processing applications and financial statements, then the processcan be done more quickly and accurately than the manual method,... more
With the completion of the report KKP / PP, then the author can draw the conclusionthat the use of data processing applications and financial statements, then the processcan be done more quickly and accurately than the manual method, either in search ofdata and calculations.The research found that the flow of information in the pharmacy still not properlyorganized, is still going on disinformation in controlling the processing system.Where there is a responsible party should be looking for data - data that is requiredevery related party. Thus, this causes the ineffectiveness of time. So the author tries toadvance treatment system which requires that every party concerned is no t directlyreported on the details - details that occurred with the method of collecting data in astructured transaction via an appropriate route assignment.
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The aim of this research is to determine the effect of profitability, liquidity, leverage, firm size, earning per share, and growth on dividend payout ratio.This research uses data from 66 non-financial companies listed on the Indonesia... more
The aim of this research is to determine the effect of profitability, liquidity, leverage, firm size, earning per share, and growth on dividend payout ratio.This research uses data from 66 non-financial companies listed on the Indonesia stock exchange (IDX) from the period 2011 to 2014. Data for this study are selected using several criteria and using purposive sampling method. The method of data management involves hypothesis testing in multiple linear regression. The results of this research show that profitability, earning per share, and growth have a significant effect on dividend payout ratio, on the other hand liquidity, leverage, and firm size, do not have a significant effect on dividend payout ratio.
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Use of the system of dual-use of gateroads represents a significant change in the hitherto preferred method of addressing of mining works development. The entire system is based on the principle of reuse of one gateroad during the process... more
Use of the system of dual-use of gateroads represents a significant change in the hitherto preferred method of addressing of mining works development. The entire system is based on the principle of reuse of one gateroad during the process of mining of the pair of neighbouring mining panels. The basic condition for its possible application is the stability of the supporting reinforcement of the gateroad so as for it to be able to withstand the additional loads originating in conducting longwalls or other expected supplementary loads to ensure the stability of the mine working throughout its required service life. Sufficient stability of these workings is ensured by the high anchoring method. It is a supporting system of long, large-area, possibly atypical mine workings, in which the elements of supporting reinforcement are embedded in solid layers of higher overburden of the supported mine working. The following paper presents the hitherto results of the process of verification of su...
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Giris: Safra kesesi polipleri, safra kesesi mukozasindan koken alan ve malignite riski tasiyan lezyonlardir. Calismamizda, safra kesesi polipleri ile ilgili klinigimizin tecrubelerini paylasmayi amacladik. Yontemler: Klinigimizde Ocak... more
Giris: Safra kesesi polipleri, safra kesesi mukozasindan koken alan ve malignite riski tasiyan lezyonlardir. Calismamizda, safra kesesi polipleri ile ilgili klinigimizin tecrubelerini paylasmayi amacladik. Yontemler: Klinigimizde Ocak 2013- Ekim 2017 tarihleri arasinda 3348 hastaya kolesistektomi ameliyati yapilmistir; safra kesesi polibi tanisiyla opere edilen 106 hasta bu calismaya dahil edilmistir. Hastalar demografik ozellikleri, klinik ve abdominal ultrasonografi bulgulari, histopatolojik verileri acisindan retrospektif olarak degerlendirildi. Bulgular: Hastalarin yas ortalamasi 47.0±12.04 (18-77) olup olgularin 72’si kadindi. Preoperatif degerlendirmede polip boyutu ortalama 5.25±3.61 mm (2-32mm) idi. Histopatolojik incelemede hicbir hastada malignite gozlenmedi; 77 yasinda kadin bir hastada (%0.94) neoplastik polip tespit edildi. En sik kolesterol polibi goruldu (% 41.5). Hastalarin 13’unde (%12.26) hicbir patoloji saptanmadi. Sonuc: Safra kesesi polipleri cerrahi tedavi kar...
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The tropical family Guttiferae is well known to be rich source of isoprenylated xanthones and biflavonoids as mayor compound and triterpenoid as minor with variety of biologically active such antioxidant, antimalaria, anticancer, and... more
The tropical family Guttiferae is well known to be rich source of isoprenylated xanthones and biflavonoids as mayor compound and triterpenoid as minor with variety of biologically active such antioxidant, antimalaria, anticancer, and antibacterial activity. Garcinia cornea known as manggu lauweung, as part of a phytochemical study in Guttiferae we have previously reported the presence chemical constituent of a triterpenoid 3-oxo friedelin (1) and now describe the isolation and structure elucidation of further constituent of the stem bark of G. cornea collected ia Bogor. Isolation and purification have been carried out by vacuum liquid chromatography and open column chromatography by using silica gel adsorbent and gradient eluting system of n-hexane, ethyl acetate, and methanol.The structure of this compound was deduced on basis of spectroscopic data 'H NMR, 13C NMR, and DEPT and comparison with the reported data.This compord has been reported from others species.
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The objective of this systematic review was to determine the influence of surface treatment of glass fiber posts on bond strength to dentine. Laboratory studies were searched in MEDLINE, PubMed, Embase, PubMed Central, Scopus, and Web of... more
The objective of this systematic review was to determine the influence of surface treatment of glass fiber posts on bond strength to dentine. Laboratory studies were searched in MEDLINE, PubMed, Embase, PubMed Central, Scopus, and Web of Science search engine. All authors interdependently screened all identified articles for eligibility. The included studies were assessed for bias. Because of the considerable heterogeneity of the studies, a meta-analysis was not possible. Twelve articles were found eligible and included in the review. An assessment of the risk of bias in the included studies provided a result that classified the studies as low, medium, and high risk of bias. The available evidence indicated that the coronal region of the root canal bonded better to the glass fiber post than apical regions. Phosphoric acid, hydrogen peroxide, and silane application enhance post’s retentiveness. In light of the current evidence, surface treatment strategies increase the bond strength ...
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Page 1. STUDY OF EFFICACY AND TOLERANCE OF SPIRAMYCINE IN ACUTE BRONCHITISARSHAD JAVAID, MOHAMMAD YOUSAF KHAN. ... 8. Murphy TF. Sethi S, Bacterial infection in chronic obstructive lung disease. Am Rev of Respir Dis 1992; 146: 1067. ...
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Abstract. Artikel berisi abstrak. Abstrak menggunakan ukuran font 10 point Times or Times New Roman dan rata kiri sejauh 25 mm dari margin kiri. Abstrak berisi informasi yang ada pada teks. Abstrak tidak berisi gambar, table atau pustaka.... more
Abstract. Artikel berisi abstrak. Abstrak menggunakan ukuran font 10 point Times or Times New Roman dan rata kiri sejauh 25 mm dari margin kiri. Abstrak berisi informasi yang ada pada teks. Abstrak tidak berisi gambar, table atau pustaka. Maksimal 200 kata dalam satu paragraph Prestasi belajar mahasiswa dapat diukur dalam bentuk nilai Indeks Prestasi (IP) yang diperoleh mahasiswa setiap semester. Besar kecilnya nilai IP ditentukan berdasarkan proses belajar mahasiswa dalam mengikuti perkuliahan di kelas, kemampuan memahami materi pelajaran dan kecakapan menyelesaikan soal ujian yang diberikan. Nilai IP secara kuantitatif dapat menggambarkan besarnya IP kumulatif dan menjadi patokan awal dalam seleksi administrasi penerimaan lowongan pekerjaan. Ada banyak faktor yang mempengaruhi prestasi belajar mahasiswa, sehingga nilai IP yang dihasilkan pun juga beraneka ragam. Mahasiswa reguler malam pasti memiliki faktor pendukung prestasi belajar yang tidak sama dengan mahasiswa reguler pagi....
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Purpose: This study examined the effect of electronic word of mouth and perceived value on purchase decisions of foods when using the Go-Food Application, which is a purchase decision mediated by trust. The increasing the number of... more
Purpose: This study examined the effect of electronic word of mouth and perceived value on purchase decisions of foods when using the Go-Food Application, which is a purchase decision mediated by trust. The increasing the number of Go-Food Application users makes this study a timely survey.Methodology/Approach: This research explored how the Go-Food Application is able to obtain more consumers compared to similar mobile apps. This research is quantitative in nature by testing the hypotheses. The sample size used was 175 respondents from a non-probability sampling with a convenience sampling technique. The analysis uses a SEM model analyzed using the AMOS program 24.Findings: The results based on Confirmatory Factor Analysis (CFA) shows that each variable is valid and reliable, and the result of Goodness of Fit shows all variables fit the data. The result of hypotheses testing show: (1) electronic word of mouth affects significantly and positively on trust; (2) perceived value affect...