bluuebunny/crossref_metadata_2025_split huggingface dataset:
Life cycle assessment of low costs housing in Indonesia
Authors: Zuraida S , Wahyuni Y S , Larasati D 
Published: November 2019

Abstract
Housing demands in Indonesia cause an increase in the supply needs of building materials where some of these materials have a negative impact on the environment. Life Cycle Assessment (LCA) method is used to assess the potential environmental impact caused by housing demand of low-costs housing in Indonesia which its types are standardized to types of 21, 36 and 45. The data of building materials were collected from some developers that involved in development of low-costs housing. Embodied Energy (EE) and Carbon Emission (CE) were used as indicators of LCA. The result of the study showed that EE and CE value is increasing linearly by the addition of housing area. It also found out that material volume has significant value to rise EE and CE. Based on the result, with the same volume of square meters, the amount of energy used to build two types of houses 21 was higher than type of 45 houses.
Planned investigation of UTES potential in Algeria
Authors: Amara S , Baghdadli T , Nordell B 
Published: November 2019

Abstract
The unbalance between supply and demand of heat can be managed by thermal energy storage (TES). For large-scale systems the underground is used as storage medium or storage volume. Aquifer storage (ATES) is most suitable for very large applications, Borehole storage (BTES) the most general system in all scales and the rock cavern storage (CTES) is best suited for extremely high loading/extraction loads. The construction of any of these systems requires knowledge about site-specific properties of the ground i.e. geology and groundwater conditions. Current paper gives a brief review of the potential and advantage of Underground Thermal Energy Storage (UTES) technology utilization in buildings for the hard climate.
Performance of SCS unit hydrograph and kinematic wave methods application on rural and urbanized watershed
Authors: Sharaswati D , Soeryantono H , Anggraheni E , Sutjiningsih D 
Published: November 2019

Abstract
Flood routing in the catchment area can be simulated by transform method. Based on the complexity of data requirement, there are two significant differences of the transform method in watershed routing, namely the SCS Unit Hydrograph and Kinematic Wave. The purpose of this study is to analyze the effectiveness of those two methods by comparing two hydrographs using HEC-Geo HMS on Urban and Rural Watersheds. Comparison has been simulated by calculating the ratio of peak hydrograph discharge to each calculation condition and the level of hydrograph compatibility. Another possibility to analyze the effectiveness of two methods by plotting accumulative discharge values from the two hydrographs produced by the SCS Unit Hydrograph method using the Kinematic Wave method. The results of the hydrograph comparison indicate that Kinematic wave method which requires more detailed data more suitable for Urban Watershed than SCS Unit Hydrograph. However, for the Rural watershed, SCS Unit Hydrograph shows satisfactory result.
Water quality indices for rainwater quality assessment in Bandung urban region
Authors: Hasan N Y , Driejana  , Sulaeman A , Ariesyady H D 
Published: November 2019

Abstract
Water quality indices (WQI) using STORET method has been used to assess rainwater quality in the Bandung urban regions, based on monitoring data at three locations (Coblong, Sumur Bandung, and Buah Batu). Rainwater samples were analyzed by detecting pH, SO4
2-, NO3
−, Cl−, and heavy metals (As, Cd, Cr, Pb, and Zn) compared with Indonesian Government Regulation No. 82 Year 2001. Rainwater quality showed polluted based on the parameters of the water quality indices analysis using the Class I and Class II criteria. Rainwater quality in Bandung urban region were lightly polluted (Coblong) and moderately polluted (Sumur Bandung and Buah Batu). Rainwater can potentially become a water sources alternative for domestic use and urban farming in Bandung urban region, but it requires further treatment for better quality.
Tensile test analysis of cold-formed column in channel profile
Authors: Aziz A A , Nindyawati N , Karyadi K 
Published: November 2019

Abstract
This study analyzes the joint capacity of cold-rolled steel frame structure for multi-level buildings to withstand axial loads. The column frame joint structures will be modeled, analyzed and tested. In this paper, the study is about cold-formed channel profile that will be tensile tested with 2 variations of the joint. The research objectives are (1) to determine the stress and strain, (2) the damage pattern. The test object is modeled using FEM with a scale of 1: 1 and the loading used is linear static loading. Simulation with FEM use a trial and error method by entering the parameters obtained. The draft and design of channel profiles using cold rolled steel material refers to several guidelines including SNI-7971-2013 on Cold Formed Steel Structures.
Confinements of concrete cylinders using bamboo spiral stirrups
Authors: Nindyawati N , Sulton M , Pratama M M A , Rahayuningsih T 
Published: November 2019

Abstract
Confinement affects the increase in beam flexural capacity. The strain stress relationship of concrete cylinder compressive strength is used to analyze the beam and column capacity. The area of the curve of the concrete cylinder core with confinements is wider than the curve without confinements. Confinements can also increase ductility and shear strength of reinforced concrete structural elements. The paper aims to determine the effect of bamboo spiral stirrups distance on normal strength concrete. Concrete cylinder size 150 mm x 300 mm. Variation in crossing distance of 30 mm, 50 mm, 70 mm and without confinement. Confinements on cylinders are bamboo and steel spiral stirrups. The results show that concrete cylinders with steel confinements increase the compressive strength by 45% of the concrete cylinder without confinements. Concrete cylinders with bamboo confinements increase the compressive strength by 28 %.
Simulation of float of 19 passenger aircraft during landing on water surface
Authors: Ardiansyah Riki , Adhitya Mohammad 
Published: November 2019

Abstract
The 19-passenger plane was modified to land in the water by making a landing gear with a float. The floats used are imported products that have previously been used by similar aircraft. Float must be able to support the aircraft and can accept impact loads when landing. This study aims to determine the effect that occurs in float when making water surface landings. Stress and displacement are simulation outputs that are the focus of research. These parameters are obtained by numerical simulation methods based on Civil Aviation Safety Regulation (CASR) by varying input parameters such as: landing speed. From the results of the study it was found that the faster the velocity then the output of the stress and displacement response from the float becomes larger.
A damage sensitive feature: Beam case
Authors: Gunawan Fergyanto E , Sekishita Nobumasa 
Published: November 2019

Abstract
With the adoption of damage tolerance design principle, the health monitoring system has become an integral part of the engineering structure in operation. For the system to work, damage indicator that describes the structural integrity level should be established and monitored. Damage indicator is usually derived from structural responses. Many quantities have been proposed for damage indicator. Some popular damage indicators are natural frequency, mode shape, curvature, strain energy, and t-, F-, and z-statistics. In this paper, we propose a new damage indicator derived from the theory of the strength of materials. We evaluate the proposal for a case involving damage on a simply-supported beam. The required data are established numerically by the finite element method for structure in healthy and damaged conditions. The results suggest that the current proposal is more sensitive to damage than the natural frequency.
Heat and Mass Transfer in 2-Propanol Droplet Evaporation: Analysis Modified Stagnant Film Model
Authors: Prasetyo D , Kosasih E A 
Published: November 2019

Abstract
Heat and mass transfer is an evaporation process from liquid droplet that occur in spray drying technology. So, it becomes important to understand the basic elements of spray drying, namely droplet. The formation technology involves drying is used in many industries. Various models of analogies of heat and mass transfer analogies have been formulated, with the aim of obtaining the characteristics that occur in the system. The analogy model most often used to obtain heat and mass transfer coefficients from droplet is the analogy model Ranz W. E. and Marshall W. R. The analogy has requirements, including the Lewis number (Le) which ranges in the number one. The purpose of this experiment is to compare the results obtained from the analogy of the Ranz-Marshall equation model applied to the droplet by making a modification of the C1 and C2 values that exist in the stagnant film model. In this experiment, the analysis results obtained from the modification of the stagnant film model is that the heat transfer phenomenon that occurs in droplet does not yet fully have good results. Where the value of C1 still cannot represent the value that can be used to obtain C2 properly.
The Effect of Vacuum Quenching on Corrosion and Hardness of the Surface of SKD61 Steel
Authors: Luthfiyah Syifa , Faridh Ahmad , Soegijono Bambang 
Published: November 2019

Abstract
JIS SKD61 Steel is chromium-molybdenum hot work steel which has composition 5.58 wt% Cr – 2.51 wt% Mo. This steel is a well-known material used as a die material to get good mechanical and hardening properties. Besides this material should have good corrosion resistance. Samples made of SKD61 steel were subjected to vacuum heat treatment at 1030°C for 3 hours with step quenching in different rates of quenching. The difference in the cooling speed of each sample causes properties on the surface to vary. Micro Hardness Vickers is a tool used to determine micro-scale hardness. While to test corrosion resistance, electrochemical testing was carried out using NaCl solution with variations in concentrations of 1%, 3.5%, and 7%. X-Ray Diffraction was used to characterize the crystal structure and the crystallite size. The results show that the speed of quenching affects the hardness of the surface of the material, structure and corrosion resistance.
Effect of Ramie Fibers on Fatique Strength Automotive Product
Authors: Komang Astana Widi I , Pohan Gerald , Sujana Wayan , Nani Prihatmi Tutut 
Published: November 2019

Abstract
The automotive industry is already utilizing many composite materials for its products since composite materials are very environmentally friendly, have low economic costs and able to reduce weight. Ramie fiber reinforced by natural composites have a great opportunity to be used as materials for automatic components. The mechanical bonding of the ramie fiber reinforced composite pad can be improved by increasing the compatibility between the matrices and good product handling technique. In addition, the mechanical behavior is also greatly influenced by the orientation of the fibers in different matrices. This paper will discuss the effect of fiber orientation (unidirectional, woven and random) on several resin matrices (epoxy and polypropilene). The purpose of this study is to observe the effect of ramie fiber orientation on fatigue resistance properties in the form of handle components. The observations used SEM (scanning electron microscope) for observing of the failure mechanism. Fatigue test of the specimens using 80s carry-type handles (in situ). Handling fatigue testing equipment is specially designed in accordance with the application of the load. The strength of the fatigue observed in the handle component shows that the optimum value is produced in the handle with the orientation variation of fiber in both the epoxy matrix and the polypropylene matrix, namely 17141 and 8414 cycles. The presence of ramie reinforcement fibers in general can increase the fatigue strength of handle components. Whereas the lowest fatigue strength is owned by fibers which have a random orientation. However, when compared with no fiber, the component handles with randomly oriented fibers still have better fatigue strength.
Using Geopolymer Composites for Heat and Corrosion Resistant Pipes
Authors: Su’udi A , Akmal J , Tanti N , Arizon  
Published: November 2019

Abstract
This research studied the use of carbon fiber reinforced geopolymer composites as corrosion resistant pipe material. Geopolymer material is a general term for material synthesized from fly ash. Fly ash is an industrial by-product (coal combustion residue) with high silica content (SiO2) and Alumina content (Al2O3). In addition there are also other elements in a relatively small percentage. This material will compound like cement if activated with Sodium Silicate. This study aims to obtain the optimum composition for high quality mechanical properties. The method used is to synthesize material with various elemental compositions. Furthermore, a mechanical test (bending test) is performed to see the effect of each element to be optimized. Besides that, a physical test in the form of SEM-EDX was also conducted to see the microstructure. Materials with optimum composition have been fabricated as pipes with centrifugal casting process. Mechanical testing of pipe samples is done by hoop tensile strength test. The test results show that the strength of geopolymer composites can achieve 58 MPa.
Stirring Effect on Surface Morphology, Structure, and Electrochemical Behavior of Electrodeposited Nickel Film on Copper Substrates
Authors: Budhi Susetyo Ferry , Faridh Ahmad , Soegijono Bambang 
Published: November 2019

Abstract
Nickel as engineering material has good corrosion resistance properties. Nickel has been deposited on copper surface by electrochemical deposition with various stirring speed. Objective on this research are to observe the effect of stirring on morphology, structure and electrochemical behavior. Electrodeposited nickel film on copper substrates was conducted with various stirring speeds (0 rpm, 75 rpm, and 150 rpm). Surface morphology was observed with Field Emission Scanning Electron Microscope (FE-SEM), structure was identified with X-ray diffraction (XRD), and electrochemical behavior was investigated by potentiodynamic polarization and cyclic voltammetry. Stirring speed effect clearly on the surface morphology, structure and electrochemical behavior. Corrosion potential and corrosion current are changes while the stirring speed is increase.
Effect of magnesium fluoride coating on corrosion behaviour of magnesium alloy
Authors: Saliza Azlina O , Shafiq Ruba’ai Mohd , Kurniawan D 
Published: November 2019

AbstractMagnesium and its alloys are explored as potential biomedical materials for being lightweight, bio-absorbable, and having attractive biological properties. A major hindrance for their use is their high corrosion rate, in particular when exposed to body fluids. This study aims at suppressing the corrosion rate of a magnesium alloy (Mg1.0Ca) by coating it with magnesium fluoride (MgF2). The coating was done by immersion of the workpiece in hydrofluoric acid solution. For comparison, pure magnesium was also coated with MgF2. The MgF2coated magnesium exhibits significantly lower corrosion rate than pure magnesium. The MgF2coated magnesium alloy shows even lower corrosion rate. The MgF2coating works in inhibiting corrosion on magnesium alloy Mg1.0Ca. The corrosion inhibition was also contributed by other compound formed during reaction between Mg1.0Ca and hydrofluoric acid and the alloy in Mg1.0Ca.
Philosophy of Biology: A Very Short Introduction
Authors: Okasha Samir 
Published: November 2019

Abstract
Philosophy of Biology: A Very Short Introduction outlines the core issues with which contemporary philosophers of biology grapple. Over the last forty years the philosophy of biology has emerged as an important sub-discipline of the philosophy of science. Addressing difficult conceptual issues that arise within the biological sciences, it also encompasses areas where biology has impinged on traditional philosophical questions, such as free-will, essentialism, and nature vs nurture. The book also explores topics such as the logic of Darwinian evolution; the concepts of function and design; the nature of species; and the debate over adaptationism.
What Is the Time of Literature?
Authors: Hayot Eric 
Published: November 2019

Abstract
Two recent books, Ted Underwood’s Distant Horizons (2019) and Cody Marrs and Christopher Hager’s edited volume, Timelines of American Literature (2019), offer new ways of thinking about how literary scholars and institutions use concepts of time. Underwood’s book argues that the tendency to think of literary history as composed of large stylistic shifts between schools is undermined by an approach focused on computational analysis of stylistic features. Marrs and Hager’s volume showcases a wide variety of periodizing and temporal experiments designed to help us rethink the nature of American literature.
CoMM-S2: a collaborative mixed model using summary statistics in transcriptome-wide association studies
Authors: Yang Yi , Shi Xingjie , Jiao Yuling , Huang Jian , Chen Min , Zhou Xiang , Sun Lei , Lin Xinyi , Yang Can , Liu Jin 
Published: November 2019

Abstract

Motivation
Although genome-wide association studies (GWAS) have deepened our understanding of the genetic architecture of complex traits, the mechanistic links that underlie how genetic variants cause complex traits remains elusive. To advance our understanding of the underlying mechanistic links, various consortia have collected a vast volume of genomic data that enable us to investigate the role that genetic variants play in gene expression regulation. Recently, a collaborative mixed model (CoMM) was proposed to jointly interrogate genome on complex traits by integrating both the GWAS dataset and the expression quantitative trait loci (eQTL) dataset. Although CoMM is a powerful approach that leverages regulatory information while accounting for the uncertainty in using an eQTL dataset, it requires individual-level GWAS data and cannot fully make use of widely available GWAS summary statistics. Therefore, statistically efficient methods that leverages transcriptome information using only summary statistics information from GWAS data are required.

Results
In this study, we propose a novel probabilistic model, CoMM-S2, to examine the mechanistic role that genetic variants play, by using only GWAS summary statistics instead of individual-level GWAS data. Similar to CoMM which uses individual-level GWAS data, CoMM-S2 combines two models: the first model examines the relationship between gene expression and genotype, while the second model examines the relationship between the phenotype and the predicted gene expression from the first model. Distinct from CoMM, CoMM-S2 requires only GWAS summary statistics. Using both simulation studies and real data analysis, we demonstrate that even though CoMM-S2 utilizes GWAS summary statistics, it has comparable performance as CoMM, which uses individual-level GWAS data.

Availability and implementation
The implement of CoMM-S2 is included in the CoMM package that can be downloaded from https://github.com/gordonliu810822/CoMM.

Supplementary information
Supplementary data are available at Bioinformatics online.
A Bayesian zero-inflated negative binomial regression model for the integrative analysis of microbiome data
Authors: Jiang Shuang , Xiao Guanghua , Koh Andrew Y , Kim Jiwoong , Li Qiwei , Zhan Xiaowei 
Published: November 2019

Summary
Microbiome omics approaches can reveal intriguing relationships between the human microbiome and certain disease states. Along with identification of specific bacteria taxa associated with diseases, recent scientific advancements provide mounting evidence that metabolism, genetics, and environmental factors can all modulate these microbial effects. However, the current methods for integrating microbiome data and other covariates are severely lacking. Hence, we present an integrative Bayesian zero-inflated negative binomial regression model that can both distinguish differentially abundant taxa with distinct phenotypes and quantify covariate-taxa effects. Our model demonstrates good performance using simulated data. Furthermore, we successfully integrated microbiome taxonomies and metabolomics in two real microbiome datasets to provide biologically interpretable findings. In all, we proposed a novel integrative Bayesian regression model that features bacterial differential abundance analysis and microbiome-covariate effects quantifications, which makes it suitable for general microbiome studies.
Clinic-Level Factors Associated With Retention in Care Among People Living With Human Immunodeficiency Virus in a Multisite US Cohort, 2010–2016
Authors: Oliver Cassandra D , Rebeiro Peter F , Shepherd Bryan E , Keruly Jeanne , Mayer Kenneth H , Mathews W Christopher , Turan Bulent , Moore Richard D , Crane Heidi M , Geng Elvin , Napravnik Sonia , Kitahata Mari M , Mugavero Michael J , Pettit April C 
Published: November 2019

Abstract

Background
Retention in care (RIC) leads to reduced HIV transmission and mortality. Few studies have investigated clinic services and RIC among people living with HIV (PLWH) in the United States. We conducted a multisite retrospective cohort study to identify clinic services associated with RIC from 2010–2016 in the United States.

Methods
PLWH with ≥1 HIV primary care visit from 2010–2016 at 7 sites in the Centers for AIDS Research Network of Integrated Clinical Systems (CNICS) were included. Clinic-level factors evaluated via site survey included patients per provider/trainee, navigation, RIC posters/brochures, laboratory test timing, flexible scheduling, appointment reminder methods, and stigma support services. RIC was defined as ≥2 encounters per year, ≥90 days apart, observed until death, administrative censoring (31 December 2016), or loss to follow-up (censoring at first 12-month interval without a visit with no future visits). Poisson regression with robust error variance, clustered by site adjusting for calendar year, age, sex, race/ethnicity, and HIV transmission risk factor, estimated risk ratios (RRs) and 95% confidence intervals (CIs) for RIC.

Results
Among 21 046 PLWH contributing 103 348 person-years, 67% of person-years were retained. Availability of text appointment reminders (RR, 1.13; 95% CI, 1.03–1.24) and stigma support services (RR, 1.11; 95% CI, 1.04–1.19) were associated with better RIC. Disparities persisted for age, sex, and race.

Conclusions
Availability of text appointment reminders and stigma support services was associated with higher rates of RIC, indicating that these may be feasible and effective approaches for improving RIC.
Future perspectives in catheter-based treatment of pulmonary embolism
Authors: Sharp Andrew S P , Attallah Antonious 
Published: November 2019

AbstractPulmonary embolism is the third commonest cause of cardiovascular death globally. The majority of such patients present with low-risk features and can be managed with simple anticoagulation; however, a large group of patients exhibit evidence of right ventricular dysfunction on echocardiography or CT at the time of presentation and these patients are at risk of early haemodynamic compromise, particularly in those with abnormal cardiac biomarkers. Catheter-directed thrombolysis has been proposed as a treatment-strategy for patients with pulmonary embolism with evidence of acute right ventricular dysfunction. We review the current technologies in mainstream use, the evidence base in support of their use and discuss future research requirements in this area.