bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluasi Ekstraksi Molar Ketiga Rahang Bawah Berdasarkan Angulasi Mesial pada Radiografi Panoramik
Authors: Saputri Rosalina I. , Boedi Rizky M. 
Published: July 2020

Abstract: Third molar development is a concern in dental care because of its influence on stomatognathic system. Due to third molar irregular pattern of eruption, different clinical and radiographic considerations on how to decide an extraction were studied. This study was aimed to evaluate the effect of mandibular third molar mesial angulation (MA) towards the extractions on panoramic radiographs. This was a retrospective study. A longitudinal study of mandibular third molars (n=192) of 102 individuals (50 Female and 52 Male) was conducted. Development of the mandibular third molar was staged according to modified Köhler et al. staging technique. Mesial angulation was measured from the intersection between axes of third molar and adjacent second molar of the most developed stage for extraction cases or before root completion for non-extraction cases. Of 102 subjects, 107 mandibular third molars were extracted. The increase of 1° of MA would increase the odds ratio (OR) of extraction by 1.113 (95% CI 1.070-1.158, p<0.01). The ROC curve showed the MA of 18.5o as the threshold of extraction with 76% of sensitivity and 68% of specificity. In conclusion, MA has the possibility as a predictive factor of mandibular third molar extraction. Future studies using bigger sample sizes and variations of third molar development are suggestedKeywords: third molar, angulation, extraction, predictive factor, panoramic radiographs Abstrak: Pertumbuhan molar ketiga menjadi perhatian pada perawatan dental karena pengaruh-nya pada sistem stomatognasi. Terdapat banyak penelitian tentang berbagai pertimbangan klinis dan radiografis untuk melakukan ekstraksi molar ketiga karena pola erupsinya yang tidak menentu. Penelitian ini bertujuan untuk mengevaluasi efek angulasi mesial (AM) dari molar ketiga rahang bawah terhadap tindakan ekstraksi pada radiografi panoramik. Jenis penelitian ialah retrospektif. Pengamatan molar ketiga rahang bawah (n=192) secara longitudinal dilakukan pada 102 individu (50 perempuan dan 52 laki-laki). Pertumbuhan molar ketiga diukur berdasarkan tahap pertumbuhan dari teknik modifikasi Köhler et al. AM diukur dari pertemuan aksis molar ketiga dan molar kedua di sebelahnya, pada tahap pertumbuhan paling akhir pada kasus ekstraksi, atau sebelum akar gigi terbentuk sempurna pada kasus non-ekstraksi. Pada sampel penelitian, ekstraksi dilakukan pada 104 molar ketiga rahang bawah. Peningkatan 1o dari AM akan meningkatkan rasio peluang dari ekstraksi sebesar 1,113 (95% CI 1,070-1,158, p<0,01). Pada kurva ROC, AM sebesar 18,5o menunjukan 76% sensitivitas dan 68% spesifisitas. Simpulan penelitian ini ialah AM dapat digunakan sebagai faktor prediksi terhadap ekstraksi molar ketiga rahang bawah. Perkembangan penelitian selajutnya dapat dilakukan dengan jumlah sampel yang lebih besar dan dengan memperhatikan pertimbahan klinis serta parameter radiografik lainnya.Kata kunci: molar ketiga, angulasi, ekstraksi, faktor prediksi, radiografi panoramik
Screening and Characterization of Proteolytic Thermophiles Bacteria from Moinit Coastal Hot-Spring, North Sulawesi
Authors: Ginting Elvy Like 
Published: July 2020

Thermophilic bacteria have been recognized as the ideal producers of thermostable enzymes and therefore they have a long time become an interesting target for research. Thermophilic proteolytic bacteria from Moinit coastal hot-spring North Sulawesi Indonesia have been isolated and some of them, have been identified and reported. In this research, we reported another eleven thermophilic proteolytic bacteria from Moinit coastal hot-spring, North Sulawesi, Indonesia which designated as 1a, 1b, 2a, 3a, 3b, 4a, 11a, 11b, 16a, 16b, and 16c. Those thermophilic proteolytic bacteria had different colony and cell morphology characteristics, and biochemical characteristics. Bacterial isolate 1a, 1b, 2a, 16a and 16c were Gram negative-bacilli, 3a, 3b and 11b were Gram positive-bacilli, 4a, 11a and 16b were Gram positive-coccus. These bacterial isolates could produce proteolytic activities at 55oC. This showed their ability to produce thermostable protease extracellularly which has the potential to explore biotechnological industries.Keywords: Moinit, protease, screening, thermophilic ABSTRAKBakteri termofilik dikenal sebagai produsen enzim termostabil dan menjadi target yang menarik untuk diteliti. Bakteri proteolitik termofil dari sumber air panas pantai Moinit Sulawesi Utara telah berhasil diisolasi dan bahkan 5 isolat bakteri telah diidentifikasi dan dilaporkan. Dalam tulisan ini, diuraikan sebelas isolat bakteri proteolitik termofil lainnya dalam kemampuannya menghasilkan protease dan karakteristik bakteri tersebut. Kesebelas bakteri adalah 1a, 1b, 2a, 3a, 3b, 4a, 11a, 11b, 16b, 16b, 16b, dan 16c yang menunjukkan karakteristik morfologi koloni dan sel bakteri, serta karakteristik biokimia yang berbeda. Isolat 1a, 1b, 2a, 16a, 16c adalah Gram negatif-basil, isolat 3a, 3b, 11b adalah Gram positif-basil, dan isolat 4a, 11a,16b adalah Gram positif-kokus. Keseluruhan isolat bakteri ini memiliki kemampuan aktivitas proteolitik pada 55oC. Hal ini menunjukkan kemampuan bakteri tersebut dalam menghasilkan protease termostabil ekstraseluler yang berpotensi untuk dieksplorasi dalam pemanfaatannya dalam bidang industri bioteknologi.Kata kunci: Moinit, protease, penapisan, termofilik
MANAGEMENT OF ANESTHESIA ON PATIENTS WHO WALK IN SESAROUS SECTION WITH ARTERITICAL TAKAYASU DISEASE
Authors: Satriyanto Muhammad Dwi 
Published: July 2020

Takayasu Arteritis Disease (TA) is a chronic inflammatory, progressive, and idiopathic disease causes narrowing, obstruction and aneurysms in systemic arterial and pulmonary artery, which mainly attacks the aorta and its branches. During pregnancy, these patients should be given special attention, in connection with any complications that may occur. Case is a woman 32 years 38 weeks pregnant with TA disease with changes in several branches of the aorta since thirteen years ago. During pregnancy there are no complaints, and now she went to the hospital with 37-38 weeks gestation. Caesarean section has been done with regional anesthesia - epidural. Local anesthesia is administered by titration with the hope of sensory blockade obtained gradually. After procedure patient had observation in the recovery room and hemodynamic was stable then moved to ward. Conclusion of the case is some complications can affect pregnancy in patients with TA. In pre anesthetic evaluation should be done carefully, treatment of complications and anesthetic planning are essential. Maintenance of perfusion is a major concern for patients and neuraxial blocks can be used without harming the mother and fetus. In patients with complications of TA was still compensated, monitoring during the procedure the same as routinely used. Provision of continuous epidural anesthesia with titration to maintain hemodynamic stability and allows monitoring of cerebral perfusion through the levels of consciousness. To avoid hypoperfusion or postoperative complications of hypertensive patients should be monitored closely for 24 hours.
ANALISIS PERBANDINGAN KINERJA KEUANGAN PT MULTISTRADA ARAH SARANA, Tbk DAN PT GOODYEAR INDONESIA, Tbk YANG TERDAFTAR DI BURSA EFEK INDONESIA DENGAN MENGGUNAKAN METODE DU PONT SYSTEM
Authors: Nasution Rizki Fadilla , Jubi Jubi , Inrawan Ady , Astuti Astuti 
Published: July 2020

The purpose of this research are : 1. to find out the financial performance of PT Multistrada Arah Sarana, Tbk and PT Goodyear Indonesia, Tbk listed on the Indonesia Stock Exchange using the Du Pont System Method. 2. to find out what factors cause differences in the financial performance of PT PT Multistrada Arah Sarana, Tbk and PT Goodyear Indonesia, Tbk listed on the Indonesia Stock Exchange using the Du Pont System Method. The author's research was conducted using qualitative descriptive analysis techniques, comparative analysis techniques and inductive analysis techniques.This result of this research be conclused as 1. The financial performance of PT Multistrada Arah Sarana, Tbk is said to be unfavorable because of the company’s ability to profit from sales, assets and equity decreases. 3. Factors that cause the differences between the two companies are the high cost of goods sold and the cost that cause losses to the company, accumulated invenory that reduces sales and company profits, the high total assets of total equity and increased share capital and additional capital causes companies to be unable restore equity.The results of the analysis suggest that both companies are expected to further increase sales and reduce costs that are detrimental to the company in order to be able to increase profits. Keywords: Analysis of Du Pont Sytem, Net Profit Margin, Asset Turnover, Return On Asset, EquityMultiplier, Return On Equity and Financial Performance.
PENGARUH LEVERAGE, PROFITABILITAS DAN KEBIJAKAN DIVIDEN TERHADAP NILAI PERUSAHAAN PADA PT JAKARTA SETIABUDI INTERNASIONAL, TBK. YANG TERDAFTAR DI BURSA EFEK INDONESIA
Authors: Shanti Virya , Siregar Liper , Inrawan Ady , Manurung Sepbeariska 
Published: July 2020

The purpose of this research are to find out the description of leverage, profitability, dividend policy and company value and to determine the effect of leverage, profitability, and dividend policy on the value of the company both simultaneously and partially at PT Jakarta Setiabudi Internasional, Tbk. registered on the Indonesian Stock Exchange. This research was conducted using qualitative descriptive analysis methods and quantitative descriptive analysis. The method used to analyze the data in this study is the classical assumption test, multiple linier regression analysis, the correlation coefficient, coefficient of determination, and hypothesis test (F test and t test). Testing is performed using the SPSS Version 20 software program.The results of the research can be summarized of follows: 1) Leverage and profitability fluctuate and tend to decline while dividend policies and corporate values fluctuate and tend to increase 2) Regression results indicate that there is a positive influence between leverage, profitability, dividend policy on the value company at PT Jakarta Setiabudi Internasional, Tbk. registered on the Indonesian Stock Exchange.Suggestions from this research are companies should make efficient use of costs and use equity effectively to increase sales so that profits increase and profitability will also increase. Companies should also pay attention to debt management, profitability and company dividend policies. Keywords: Leverage, Profitability, Dividend Policy, and Company Value
Problematika Implementasi Pendekatan Saintifik dalam Pembelajaran Bahasa Arab di Madrasah Aliyah Hidayatul Mubtadiin Magetan
Authors: Bashori Ahmad 
Published: July 2020

The use of a scientific approach in learning Arabic aims to make students active, productive, critical, and analytical thinking in constructing concepts of knowledge and skills in Arabic. This study aims to describe the various problems faced by teachers and students in applying a scientific approach to learning Arabic in the Madrasah Aliyah Hidayatul Mubtadiin Magetan. The method used in this study is a qualitative method with a descriptive approach. Research data were obtained by interview, observation, and documentation. The data found were analyzed and interpreted using the Miles model, which is data reduction, data presentation, and concluding. The results of this study is that the problems of implementing a scientific approach to learning Arabic in the Madrasah Aliyah Hidayatul Mubtadiin Magetan relating to teachers are 1). Irrelevance of Arabic learning methods used by teachers with a philosophical scientific approach, and. 2) Lack of teacher initiative and innovation in encouraging students to be active, productive, think critically, and analytically in learning Arabic. The problems related to students are 1) The tendency of students to build their understanding of Arabic instantly, 2) Lack of encouragement in students to explore material that has been previously studied as a basis for contracting concepts in new material to be learned, and 3) Students' ignorance of the learning objectives being carried out. Mean while the problems related to teaching media are 1) The unpreparedness of teaching media used by teachers or students in supporting the learning process, and 2) Teacher and student inequality in empowering instructional media and those that are already available.
Observations of Disequilibrium CO Chemistry in the Coldest Brown Dwarfs
Authors: Miles Brittany E. , Skemer Andrew J. I. , Morley Caroline V. , Marley Mark S. , Fortney Jonathan J. , Allers Katelyn N. , Faherty Jacqueline K. , Geballe Thomas R. , Visscher Channon , Schneider Adam C. , Lupu Roxana , Freedman Richard S. , Bjoraker Gordon L. 
Published: July 2020

Abstract
Cold brown dwarfs are excellent analogs of widely separated, gas giant exoplanets, and provide insight into the potential atmospheric chemistry and physics we may encounter in objects to be discovered by future direct imaging surveys. We present a low-resolution, R ∼ 300, M-band spectroscopic sequence of seven brown dwarfs with effective temperatures between 750 and 250 K along with Jupiter. These spectra reveal disequilibrium abundances of carbon monoxide (CO) produced by atmospheric quenching. We use the eddy diffusion coefficient (K

zz
) to estimate the strength of vertical mixing in each object. The K

zz
values of cooler gaseous objects are close to their theoretical maximum, and warmer objects show weaker mixing, likely due to less efficient convective mixing in primarily radiative layers. The CO-derived K

zz
values imply that disequilibrium phosphine (PH3) should be easily observable in all of the brown dwarfs, but none as yet show any evidence for PH3 absorption. We find that ammonia is relatively insensitive to atmospheric quenching at these effective temperatures. We are able to improve the fit to WISE 0855's M-band spectrum by including both CO and water clouds in the atmospheric model.
Gravitational Microlensing Event Statistics for the Zwicky Transient Facility
Authors: Medford Michael S. , Lu Jessica R. , Dawson William A. , Lam Casey Y. , Golovich Nathan R. , Schlafly Edward F. , Nugent Peter 
Published: July 2020

Abstract
Microlensing surveys have discovered thousands of events, with almost all events discovered within the Galactic bulge or toward the Magellanic Clouds. The Zwicky Transient Facility (ZTF), while not designed to be a microlensing campaign, is an optical time-domain survey that observes the entire northern sky, including the Galactic plane, every few nights. The ZTF observes ∼109 stars in the g and r bands and can significantly contribute to the observed microlensing population. We predict that the ZTF will observe ∼1100 microlensing events in 3 yr of observing within 10° latitude of the Galactic plane, with ∼500 events in the outer Galaxy (ℓ ≥ 10°). This yield increases to ∼1400 (∼800) events by combining every three ZTF exposures, ∼1800 (∼900) events if the ZTF observes for a total of 5 yr, and ∼2400 (∼1300) events for a 5 yr survey with postprocessing image stacking. Using the microlensing modeling software PopSyCLE, we compare the microlensing populations in the Galactic bulge and the outer Galaxy. We also present an analysis of the microlensing event ZTF18abhxjmj to demonstrate how to leverage these population statistics in event modeling. The ZTF will constrain Galactic structure, stellar populations, and primordial black holes through photometric microlensing.
De Vauban à Taylor : une approche historique sur la méthode de calcul des coûts du travail
Authors: Gerber François , Assens Christophe 
Published: July 2020

Cet article présente une chronologie des travaux historiques dans l’évaluation du coût du travail. Dans ce domaine, le document fondateur date de 1688 et correspond à un règlement d’atelier. Il est l’œuvre d’un entrepreneur anonyme chargé de diriger un chantier de terrassement pour le roi. Cet entrepreneur utilise la main d’œuvre des soldats qu’il rémunère en tenant compte de la pénibilité du travail. Au XVII e siècle, le marquis de Vauban s’inspirera de ce travail fondateur, pour décomposer les tâches en opération élémentaire afin d’évaluer équitablement le coût, à la fois du côté de l’offre et de la demande de travail. Dans le prolongement historique du travail de Vauban, l’ingénieur Taylor introduira les premiers calculs de productivité au travail, en indexant la rémunération sur des objectifs de résultat découlant des effets d’apprentissage. Ce travail de recherche à caractère historique est très actuel, dans la mesure où les méthodes de calcul de coût sont toujours employées dans les structures hiérarchiques, y compris dans les activités de service et pour l’organisation des tâches intellectuelles.
Suitability of Unmanned Aerial Vehicles for Cadastral Surveys
Authors: Mantey S. 
Published: July 2020

Cadastral surveys in Ghana often employ well known surveying equipment such as Total Station andGNSSreceivers or a combination of both. These survey techniques are well-established and widely accepted. However, there are limitations in certain areas. In situations where difficult terrain and inaccessible areas and dense vegetation are encountered or when surveyor’s life may be at risk, Unmanned Aerial Vehicles (UAVs) could be used to overcome the limitations of these well-established survey instruments. This research used high resolution images from UAV (DJI Phantom 4) to survey plots within the University of Mines and Technology land area. Coordinates of the boundary points were extracted using Agisoft Photoscan.GNSSreceivers were also used to survey the land and the same boundary point coordinates obtained and compared. This enabled the establishment of accurate ground control points for georeferencing. The coordinates obtained from both UAV andGNSSSurveys were used to prepare cadastral plans and compared. The difference in Northings and Eastings from UAV andGNSSsurveys were +0.380 cmand +0.351 cmrespectively. These differences are well within tolerance of +/-0.9114 m(+/-3 ft) set by the Survey and Mapping Division (SMD) of the Lands Commission for cadastral plans production. This research therefore concludes that high resolution images from UAVs are suitable for cadastral surveying. Keywords: Unmanned Aerial Vehicles, Drones, Global Navigation Satellite Systems, Cadastral Surveys
Can Capital Injection Make Challenged Gold Projects in Ghana Economically Viable? – A Case Study
Authors: Mireku-Gyimah D. , Gyebuni R. 
Published: July 2020

Damang Gold Mine (DGM) in Ghana uses open pit mining technology to mine its gold deposit. It has an estimated mineable gold reserve of about 32 Mt exploitable for 8 years. As the gold price kept falling from 2013 and operating cost kept rising, the mine down sized its operations. But the operations became challenging due to poor performance of ageing mining equipment and processing plant, and the need for a new tailings dam. As the gold price stabilises, it could be gainful to invest capital to resolve the challenges and increase production. This study aims at investigating whether DGM would be economically viable if the intended investment is made assuming the gold price falls to US$ 32.15/g. The study estimates the required capital and annual operating cost to be US$89.49 M and US$100.84 M respectively. A cash flow analysis is carried out assuming no price escalation, discount rate of 20%, and applying the following investment laws of Ghana: royalty of 5% of gross revenue; straight line depreciation of capital expenditure over five years (20% per year); investment allowance of 5% in the first year only; loss carry forward; and corporate tax of 35%. The results give Net Present Value of US$82 723 720.28 and Internal Rate of Return of 41.13%, indicating profitability. Sensitivity analysis reveals that the project will continue to be profitable until the revenue falls below 24%, assuming all other economic parameters remain constant. The project will also continue to be profitable until the operating cost increases beyond 30%, assuming all other economic parameters remain constant. Risk analysis on the project indicates the project has 70% chances of success. DGM could invest the capital to mine its gold reserves because the mine will make profit provided cost is controlled and production level maintained to generate needed revenue. Keywords: Net Present Value, Internal Rate of Return, Sensitivity Analysis, Risk Analysis
Geometallurgical Studies on Gold Ore for Enhanced Comminution and Leaching
Authors: Ofori-Sarpong G. , Okwaisie T. , Amankwah R. K. 
Published: July 2020

Many gold processing plants are experiencing challenges as mining pits are becoming deeper, rocks are getting harder and more complex polymetallic and refractory ores are being encountered. The variations in the characteristics of ores lead to deviations from the established parameters, and these affect gold extraction efficiency. This paper presents a study where geological characteristics of the ore types from some mining pits were used to ascertain the influence of ore blends on improving the performances of comminution and leaching circuits. To achieve this, mineralogical, comminution, gravity recoverable gold and leaching investigations were conducted on fresh and weathered ore samples and their blends. Mineralogical study showed that the main rock types associated with the mine pits were dolerite, phyllites, conglomerates and sandstone. The dominant minerals were quartz, plagioclase, with traces of pyrites. The Crushability Work Indices of the rocks were between 30 and 37 KWh/t, which are generally higher than the maximum design value of 31.9 kWh/t, and this situation will pose throughput challenges in that section. The Bond Ball Mill Work Indices of the blends tested were between 16.4 kWh/t and 9.6 kWh/t and a blend ratio of 85% fresh and 15% weathered was found to have a Bond Ball Work Index almost equal to the design value of 14 kWh/t. With gold assays of 2.5 g/t for dolerite, 2.1 g/t for phyllite, 3.7 g/t for sandstone and 3.4 g/t for conglomerate, the gravity recoverable gold was in the order of sandstone 36% > phyllite (31.5%) > dolerite (29.5%) > conglomerate (18%). The overall gold recoveries were in the sequence of conglomerate (95%), sandstone (94%), phyllite (92%) and dolerite (87%). This information could be utilised in developing a proactive plant operations strategies for an operating plant in order to ultimately manage the plant and enhance achievement of set targets. Keywords: Geometallurgy; Ore Blends; Characterisation; Communition Circuit Performance; Gold Recovery