bluuebunny/crossref_metadata_2025_split huggingface dataset:
Internal circulation in tidally locked massive binary stars: Consequences for double black hole formation
Authors: Hastings B. , Langer N. , Koenigsberger G. 
Published: July 2020

Context. Steady-state currents, so-called Eddington–Sweet circulation, result in the mixing of chemical elements in rotating stars, and in extreme cases lead to a homogeneous composition. Such circulation currents are also predicted in tidally deformed binary stars, which are thought to be progenitors of double black-hole merger events.
Aims. This work aims to quantitatively characterise the steady-state circulation currents in components of a tidally locked binary system and to explore the effects of such currents on numerical models.
Methods. Previous results describing the circulation velocity in a single rotating star and a tidally and rotationally distorted binary star are used to deduce a new prescription for the internal circulation in tidally locked binaries. We explore the effect of this prescription numerically with a detailed stellar evolution code for binary systems with initial orbital periods between 0.5 and 2.0 days, primary masses between 25 and 100 M⊙ and initial mass-ratios qi = 0.5, 0.7, 0.9, 1.0 at metallicity Z = Z⊙/50.
Results. When comparing circulation velocities in the radial direction for the cases of a single rotating star and a binary star, it is found that the average circulation velocity in the binary star may be described as an enhancement to the circulation velocity in a single rotating star. This velocity enhancement is a simple function depending on the masses of the binary components and amounts to a factor of approximately two when the components have equal masses. After applying this enhancement to stellar models, it is found that the formation of double helium stars through efficient mixing occurs for systems with higher initial orbital periods, lower primary masses and lower mass ratios, compared to the standard circulation scenario. Taking into account appropriate distributions for primary mass, initial period and mass ratio, models with enhanced mixing predict 2.4 times more double helium stars being produced in the parameter space than models without.
Conclusions. We conclude that the effects of companion-induced circulation have strong implications for the formation of close binary black holes through the chemically homogeneous evolution channel. Not only do the predicted detection rates increase but double black-hole systems with mass ratios as low as 0.8 may be formed when companion-induced circulation is taken into account.
Building Complexity and Achieving Selectivity through Catalysis – Case Studies from the Pharmaceutical Pipeline
Authors: Tedrow Jason S. , Thiel Oliver R. , Beaver Matthew G. , Caille Seb , Farrell Robert P. , Rötheli Andreas R. , Smith Austin G. 
Published: July 2020

The last decade of small-molecule process development has witnessed a trend of increasing molecular complexity for clinical candidates. The continued advance of novel catalytic methods and subsequent translation to efficient and scalable processes has enabled process chemists to overcome the challenges associated with increasing complexity. This Account highlights several examples from the process chemistry laboratories at Amgen.1	Introduction2	The Evolution of Molecular Complexity3	Catalysis as a Lever to Build Complexity4	Ru(II)-Catalyzed Dynamic Kinetic Resolution Enabling the Manufacture of AMG 2325	Application of Enzymatic Desymmetrization toward Scale-Up of the MCL-1 Inhibitor AMG 1766	Synthesis of Fucostatin 1: Catalytic Asymmetric Transfer Hydrogenation7	Manganese-Catalyzed Asymmetric Epoxidation To Prepare a Carfilzomib Intermediate8	Asymmetric Reduction Strategies: Novel Apelin Receptor Agonists and AMG 9869	Conclusions
PHACE Syndrome in a Child with Structural Malformations of the Brain
Authors: Aygünes Utku , Dogan Melih Timucin , Keceli Avni Merter 
Published: July 2020

AbstractPHACE syndrome is an acronym that describes a neurocutaneous condition, consisting of posterior fossa malformations that coexist with large facial hemangiomas, eye anomalies, and cardiac/aortic defects. The prognosis of the disease has not been clearly identified. There appears to be a risk of stroke in children with arterial anomalies. Radiological examinations play a considerable role in determining the degree of intracranial, cardiac involvement and the probable complications. In this article, we reported a 4-month-old boy with PHACE syndrome that has been diagnosed through a large segmental infantile hemangioma involving the eye and over the left half of the face in brain magnetic resonance imaging and magnetic resonance angiography findings. One month after starting propranolol therapy, there was a noticeable reduction in the size of the lesions. Almost complete resolution of the hemangioma was seen after a 6 months of propranolol therapy.
Complex plasma in a stratified glow discharge in a strong magnetic field
Authors: Dzlieva E S , D’yachkov L G , Novikov L A , Pavlov S I , Yu Karasev V 
Published: July 2020

Abstract
A dusty plasma was created in a stratified glow discharge in longitudinal magnetic fields above 1 T. Experimental conditions were selected and dust structures were first created in the neon working gas in the magnetic field range B = 1.1–2.2 T. Under realized conditions, the electron cyclotron radius is close to the dust particle radius, and the ion cyclotron radius is less than the Debye screening length. Images of dust structure cross sections perpendicular to the magnetic field were obtained. They contain about 10 particles. The dependence of the angular velocity of the dust structure rotation for its widest cross section on magnetic field was measured. The direction of the angular velocity vector coincides with the direction of the magnetic induction vector. In contrast to the previously obtained dependence of the rotation velocity on magnetic field in the region B < 1 T, at B > 1 T the rotation angular velocity ceases to grow, reaching a value of about 3 rad s−1. To explain the experimental results on the dust structure rotation velocity, an analytical model of the rotation mechanism is proposed. The model is based on the concept of eddy currents in striations and the influence of the magnetic field on the striation length. The obtained estimates of the rotation velocity are in a good agreement with the experimental data.
Photon Detection in heavy-ion experiments
Authors: Modak Abhi , Kumar Prasad Sidharth 
Published: July 2020

Abstract
We present the measurements of multiplicity and pseudorapidity distributions of inclusive photons in proton-proton (pp) and heavy-ion (AA) collisions using the Photon Multiplicity Detector (PMD) employed at STAR and ALICE experiments. The working principle, design and features of PMD are discussed. The results are compared to different Monte Carlo (MC) predictions. The dependence of average photon multiplicity on centre-of-mass energy in pp collisions is discussed. The limiting fragmentation scenario for inclusive photon production in both pp and AA collisions are also reported.
An Exploratory Comparative Study of Fabricated Silica – Aluminium Metal Matrix Composites with Casted Aluminium-Silicon Alloys
Authors: Debnath Sourav , Roy Soumyajit , Kumar Pramanick Akshay 
Published: July 2020

Abstract
Different commercial grades of aluminium have been used in which LM6 grade is most available. An attempt has taken towards developing Aluminium-Silicon Alloys (Al-Si alloys) via conventional casting and investment casting separately. Parallel effort has made to develop silica – aluminium metal matrix composites using both crystalline and non-crystalline form of silica separately as reinforcement. Comparative study has carried out based on different physical and mechanical properties of developed products.
Effect of temperature and deposition rate on the surface morphology of thin Al metal films on glass substrate: Application in Solar Cell
Authors: Das Soham , Neogi Swarup , Mukherjee Moumita 
Published: July 2020

Abstract
Thin Al films with thickness around 300nm are grown on glass substrate by thermal evaporation technique. The temperature of the substrate has varied in between 2500C - 3000C and the deposition rates are varied in the range of 0.5nm/s to 3nm/s. During the evaporation process, the vacuum level as lower as 10-5 Pa is maintained. The surface morphology/roughness of the thin films are studied using Scanning Electron Microscopy (SEM) technique. SEM images have shown that the surface roughness increases with the increasing deposition rate. The mean grain size of the metallic films on glass substrate increases from 25nm to 60nm (approx.) with the increasing deposition rate. In addition to that, the study reveals increasing substrate temperature will increase the average surface roughness.
Development of the Architectural Styles of the Reformation Era in Makassar, South Sulawesi, Indonesia
Authors: Harisah A , Wikantari R , Mochsen Sir M , Radja A M , Syam S , Deapati A K , Badri  
Published: July 2020

Abstract
The beginning of the reformation era was the post-New Order era marked by the resignation of President Soeharto in 1998, and the process is still ongoing. The purpose of this study was to identify trends in the development of architectural styles in Makassar, outlined in the form of a timeline for the development of architectural styles in the era. The used research method was the historical-diachronic analysis with data collection techniques through exploration on the internet using google maps, interviews, observations, and documents. The research population was phenomenal buildings in Makassar. Phenomenal means the amount was large/the shapes were prominent/it had a certain style/it had a political background in its emergence. The sampling technique used criterion-purposive-snowball sampling technique. The collected data was analyzed and interpreted descriptively. The assessment of validity and reliability of the data were done through the triangulation of qualitative data collection techniques. This research found that there were diverse architectural styles that developed in the reform era in Makassar, namely: No Style, My Style, Classic, Modern, Minimalist, Perforated Skin, Double Skin, Corporation, Iconic, Container Box, Colonial, Postmodern, and Tropical. The background of the emergence of these styles was influenced by various external factors: globalization, local strongmen, local/national/international corporations, local iconic interpretation, decentralization, industry, and the availability of materials and experts, local and national government, political, economic, social and cultural dynamics. Furthermore, there were also internal factors that influence the styles, namely the taste of the architects, and the taste as well as economic capabilities of the users/owners.
Comparison of Building Envelope Models to Illuminance Level in Phinisi Tower Building
Authors: Jamala N , Rahim R , Mulyadi R 
Published: July 2020

Abstract
The hyperbolic parabolic facade is the appearance of a Phinisi Tower Building. The building facade characterizes this building and is also the aesthetic value of this building. Building facade models are increasingly developing, but need to pay attention to their association with visual for space users. Visual comfort is related to the standardization of the level of illuminance, which has been recommended by Indonesia National Standards. Quantitative research methods that used describe data measurement results in the workspace, which are directly related to the opening of the building envelope. The level of illuminance measurements are carried out in the workspace and in open areas in medium sky conditions. The results of the study are that the level of illuminance in the workspace is very different, because of the different facade models. vertical and horizontal strip facade models have a higher level of illuminance than the hyperbolic parabolic facade, whereas in spaces that do not use a facade but shaded by sunscreen are the highest. The results of the study concluded the building facade model influence of the level of illuminance in the workspace. The contribution of this research can be a guide in designing the facade shape of buildings, by paying attention to the distribution of lighting into the space, so that it can reduce the use of energy in terms of lighting and can create energy efficient building designs.
Experimental Study of Natural Materials Utilization as a Stabilization Agent on Soft Soil
Authors: Harianto T , Marfu’ah N , Rauf I , Leatemia T B C 
Published: July 2020

Abstract
Chemical soil stabilization is known as the most economical method compared to others. The development of stabilization materials has led to studies of the utilization of natural materials and waste materials to replace cement and lime which has become the most popular binder agent ever known. This research utilizes natural minerals such as overboulder, zeolite and Palm Oil Fuel Ash (POFA) as its binder agents. The amount of natural material varies at intervals 3% - 15% by the weight of soil. Additional of natural materials is done to increase bearing capacity as a subbase layer, which is based on FHWA standards CBR minimum is 20%. California Bearing Ratio (CBR) tests were carried out to see the effect of each material for increase bearing capacity of soft soil. Curing periode is varies at 7 days, 14 days and 28 days. The results shows, by adding natural minerals such as overboulder, zeolite, and POFA increasing the CBR value up to 5 times, 6 times and 5 times compared to untreated soil and close to the CBR value of cement stabilized soil. Referring to FHWA standards, we can conclude that natural materials can be used for stabilization materials on subbase layer.
Type and Quantity of the Residual Construction Material of Low-rise Building Construction in Makassar
Authors: Asad M A , Rusdi U L , Rosmariani A , Suharman H , Evi A , Yulio O 
Published: July 2020

Abstract
Waste material is considered as residual material which is not used during construction projects. These materials are unable to be reused, returned, recycled, or salvaged which have significant impact to environment. The residual material that occurs is caused by inaccurate planning and inefficient use of material in the project. This research is intended to identify quantity of residual material in the construction of low-rise buildings. Data was collected from 25 housing and shophouse projects. It then analysed using quantitative analysis to determine the type and quantity of the construction waste material. The result shows that the highest waste material for housing is sand while for shophouse projects is bricks.
Performance Evaluation of Mini Single Board Computer in Hadoop Big Data Cluster
Authors: Adnan  , Tahir Z , Yohannes C , Ariel  
Published: July 2020

Abstract
Hadoop is a Java-based and open source software framework that serves to process big size data in a distributed manner. Hadoop uses a framework for applications and programming called MapReduce. Along with the development of Hadoop, big data research using Hadoop is running using a single board computer (SBC). SBC is a mini computer which has a specification similar to a conventional computer but has lower specifications and power usage. However, the use of storage used on a single board computer has constraints, namely low bandwidth and limited local storage, therefore NAS is used because it has large storage and bandwidth speeds is upto1 Gbps. It uses as storage that is carefully used on Hadoop. Based on testing by running Hadoop in a single node and multi nodes using Micro SD storage and NAS does have a significant difference. When running Hadoop on a single node the difference in data access speed generated by Micro SD and NAS has a difference of 2 seconds. On multi nodes (clusters) the ratio is 4 seconds. The difference in NAS bandwidth that is 2 times faster than Micro SD show a significant difference if it is run on Hadoop.
Ultrahigh-Pressure Metamorphic Rocks in the Bantimala Mélange Complex and Its Implication to Cretaceous Tectonics in the South Arm of Sulawesi
Authors: Mawaleda M , Umar H , Husain J R , Maulana A , Jaya A , Irvan U R , Permana D D 
Published: July 2020

Abstract
Bantimala Mélange Complex is about 75 Km to the North of Makassar, the capital city of South Sulawesi Province. The presence of High-pressure Metamorphic Rocks, and Ultrahigh Pressure in the Bantimala Mélange Complex, has been known and studied by a number of geologists. Eclogite and Blue Schist are Ultrahigh, and High-pressure metamorphic rocks in the Bantimala Mélange Complex which have important significance in explaining the Cretaceous tectonics in this area. Furthermore, Bantimala Eclogite is the only Ultrahigh-pressure metamorphic rock known to be exposed in Sulawesi. The results of thin section analysis of Eclogite show the presence of Omphacite Minerals, and Coesite as an index mineral for Ultrahigh pressure metamorphic rocks. While in Blue Schist with Glaucophane Minerals are found which are partially replaced by Chlorite which indicates the presence of Poly-metamorphism as a result of retrogradation from Ultrahigh pressure to High pressure and to Medium pressure metamorphic rocks. Radiometric age dating using the Ar40/Ar39 method shows an age spectrum of 100 Ma-114 Ma (Early Cretaceous). The 114 Ma, age is interpreted as the age of Eclogite’s Ultrahigh pressure metamorphic rocks formation with respect to the peak of subduction tectonics. Whereas the age of 100 Ma before now is interpreted as the age of exhumation or collision as the end of the Cretaceous tectonic subduction in the South Arm of Sulawesi or in the East or Southeast of Sundaland.
The Effect of Tool Geometry of Hole Towards Tool Life in Hard Material Holes
Authors: Aminy A Y , Arief S , Sulaiman  
Published: July 2020

Abstract
This study studied the characteristics of machining hard material milling by using carbide Endmill tool with variation machining and carried out without using cooling water. The method used in this study was experimental by providing machining variables (rotation = 191 rpm, 398 rpm, 764 rpm and 1,082 rpm; feeding speed (Vf) = 0.1; 0.18 and 0.26 mm / min). After machining, a tool wear is measured using a digital microscope with magnification 1,000 times. The results of Endmill tool wear measurements show that maximum wear at Vf = 0.1 mm / min = 0.42 mm; Vf = 0.18 mm / min = 0.428 mm and Vf = 0.26 mm / min = 0.4325 mm / min, the greater the feeding speed, the fewer the number of holes produced. While the effect on roughness is that the speed of feed is more influential on roughness compared to changes in workpiece rotation and the rake angle. The roughness data obtained ranged from 0.495 μm to 2.095 μm, this means that the surface roughness value is still in the standard area (Ni ÷ N9 = 0.025 ÷ 6.3 µm) or it can be said that the selected machining variable can be used as the machining variable perforating hard material
EPIC (Education Priority Compact) Strategy as A Solution for Education of Post-Disaster Refugee Children in Palu City, Central Sulawesi
Authors: Mahful R , Algifari A , Jacobus J , Haqiq A 
Published: July 2020

Abstract
Disaster victims’ children are required to live in temporary shelters provided by Non-Government Organizations (NGOs) and the government. In the first phase, 699 units have been built in 72 locations. The focus of the government in the first three months after the earthquake and tsunami in Central Sulawesi was to rescue the emergency and clean up the area after that the focus then began to shift to improving the economy of the affected area. In handling post-disaster, the government does not prioritize education as its main aspect, so many of the victims of disasters do not go to school until they drop out of school. Focus Group Discussions conducted in several HUNTARA locations in the city of Palu, resulted in education being one of the concerns of the people living in temporary shelters. The community is concerned about the sustainability of their children’s school education, due to the absence of educational facilities in the shelter as well as the community’s economy that has fallen due to lack of work is exacerbated by the government’s lack of attention to the education of children in refugee camps / HUNTARA. These methods are Focus Group Discussion (FGD) that has the main target of refugee communities. On the other hand, researchers also the distribution of questionnaire in several refugee locations in the city of Palu, in order to obtain accurate data for supporting this research. By quantitative SWOT methods and AHP Analysis to determine priorities in determining the EPIC (Education Priority Compact) Strategy which is expected to be one of the solutions for post-disaster education in Central Sulawesi.
Web Page Extraction and Classification Using JSOUP and Naïve Bayes
Authors: Cokrowibowo S , Nur N , Irmayanti  
Published: July 2020

Abstract
Classification of web pages manually requires quite a long time because most of the available web pages are not structured, so the classification method is needed quickly and accurately. Naïve Bayes algorithm with a good probabilistic approach in classifying web pages, seen from the advantages that are included in the classical category with a simple probability concept. However, this algorithm provides pretty good performance for many modern cases with large data. For the process of extracting information from web pages, it is proposed to use JSOUP which is a java library that provides a good API for extracting, manipulating data, and completing the initial data cleaning using the best methods from DOM, and CSS. The use of the JSOUP library makes it possible to be able to do web page analysis without having to save web documents to a computer store, so computer storage resources will be constant even though the amount of training data is increased. In this study, implementing JSOUP as a tool for extracting information from web pages and Naïve Bayes algorithm for classification of web pages.
Investigation on nano microbial cellulose/honey composite for medical application
Authors: Meftahi Amin , Shahriari Hamid Reza , Khajavi Ramin , Rahimi M Karim , Sharifian Ali 
Published: July 2020

Abstract
The overall purpose of this study is to investigate the plausibility of employing honey impregnated nano microbial cellulose (NMC) produced in Hestrin-Schramm media as a novel wound dressing. In the initial stage, three predominant characteristics of thyme, Astragalus, and Ziziphus honey including pH, total soluble solids as well as hydrogen peroxide content were assessed. In the second stage, the zone of inhibition diameters for Escherichia coli (E. coli) and Staphylococcus aureus (S. S.areous) were examined respectively. Meanwhile, ATR-FTIR, XRD, and SEM were applied to study the chemical, physical structures, and surface morphology of NMC pellicle. In addition, Air permeability and wettability of samples were studied. The obtained results revealed that in spite of possessing the lowest amount of hydrogen peroxide, thyme honey had the uppermost antibacterial property. Furthermore, wettability and sinking time of treated NMC with thyme honey were 43% and 49% higher than the untreated NMC respectively and purified dry raw cellulose had 11% higher air permeability than dry raw cellulose in 400 Pa. According to the results, the treated NMC with thyme honey has a high potential to be applied in the medical field as a novel wound dressing.