bluuebunny/crossref_metadata_2025_split huggingface dataset:
Urethane based nanocomposite coated proppants for improved crush resistance during hydraulic fracturing
Authors: Qian T , Muhsan A S , Htwe L , Mohamed N , Hussein O 
Published: June 2020

Abstract
Hydraulic fracturing is one of the stimulation techniques that has been used to increase the hydrocarbon flow in unconventional reservoirs. Proppants are normally used to maintain the fracture conductivity and increase the permeability to oil. Due to high closure stress of the fractured formation, the conventional or uncoated proppants are easily crushed. Therefore, this project aims to increase the compressive strength of proppants by coating it with urethane based nanocomposite. Glass beads and fracking sands are coated with urethane resin and mixed with reduced graphene oxide (rGO) and carbon nanotubes (CNTs) respectively. Analysis testing using optical microscopy (OM) was conducted to study the morphology and microstructures of the coated proppants before and after crush test. Results showed remarkable improvement in proppants compression strength up to 41% and 35% after adding only 0.5% of CNTs and 0.1% of rGO respectively to the urethane resin coating. Therefore, it is recommended to utilize this material for coating the proppant with the optimized concentration to prevent pore plugging and proppant from flowing back, achieving the objective and solving both problem statements.
Performance and emission of turbocharger engine using gasoline and ethanol blends
Authors: Rosdi S M , Mamat R , Alias A , Hamzah H , Sudhakar K , Hagos F Y 
Published: June 2020

Abstract
In this decade, alternative fuels such as ethanol were extensively studied as an additive or substitute for increasing engine performance and decreasing the release of harmful gases into the environment. The objective of the study is to assess engine performance and exhaust emission using Gasoline and Ethanol blends in a turbocharged spark-ignition engine. Gasoline was used as a reference fuel, and ethanol was blended into gasoline at 10%, 20% and 30% named as E10, E20, and E30, respectively. The turbocharger spark ignition (SI) engine has been coupled to eddy current 100 kW dynamometer to measure the engine efficiency. The engine test was carried out at an engine speed of 3000 rpm and 40% wide open throttle (WOT). As results, the performance parameters such as volumetric efficiency (VE), rate of heat release (ROHR), brake mean effective pressure (BMEP), brake specific fuel consumption (BSFC) of the engine increased with gasoline-ethanol blends compared to gasoline. Also, the complete combustion contributed to the reduction of the hydrocarbon (HC), carbon dioxide (CO2) and nitrogen oxide (NOx) emissions. From the study, it can be concluded that ethanol is highly suited for turbocharged SI engines to reduce emissions and increase performance.
A simple and low-cost purification method for microbial-free water using zinc oxide nanoparticles
Authors: Muzaffar S , Naeem Aslam M , Rehman S , Umer S , Ahmed S , Zahra S R , Ahmad W , Anwar H 
Published: June 2020

Abstract
Availability of standard quality drinking water is very essential for all living-beings. Availability of drinkable water has become a biggest challenge for the whole world. Water is a vital necessity for living-beings. Contamination of water has caused the millions of deaths in every year. Therefore, it is dire need to develop and explore low cost and simple methods to obtain quality drinking water. Zinc oxide (ZnO) is good reactive agent that had used to immobilize the toxic substance and destroyed the virus from contaminated water. Zinc oxide nanoparticles (ZnO-NPs) were prepared by using zinc sulfate heptahydrate (ZnSO4. 7H2O) and sodium hydroxide (NaOH). As prepared zinc oxide nanoparticles (ZnO-NPs) were characterized by using different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis spectroscopy. From XRD results, average crystallite size of prepared ZnO-NPs was calculated using Scherrer’s equation and found to be 29 nm. SEM analysis showed that as prepared NPs has mixed morphology having hexagon and rod-like shapes. UV-Vis analysis showed that maximum absorbance range between 250 nm to 350 nm. After the characterization, zinc oxide nanoparticles (ZnO-NPs) were employed for purification of water. The treated water was then investigated by finding electrical conductivity (EC), analysis of pH, total dissolved solids (TDS), atomic absorption spectroscopy (AAS) for the study of heavy metals and colony forming units (CFU) for microbial count such as bacteria, virus and protozoa etc. It was found that water treated with ZnO killed 100 % of microorganism as compared to water without treatment of ZnO (63%).
Low voltage reliability equivalent using monte-carlo simulation technique
Authors: Fauzi N F M , Roslan N N R , Ridzuan M I M 
Published: June 2020

Abstract
Reliability is the ability of a system to supply continuous electricity to customer which ends with zero fault that occurs under a specific period of time. Most of the literature focus more on medium voltage (MV) and high voltage (HV) compared to the low voltage (LV) due to the general absence of exact data in LV network and sizing of LV network. In addition, an increament in size of the LV network makes the network more complex and difficult to assess. Therefore, in this paper, the performance of reliability in LV network will be evaluated in detailed network model. To reduce simulation time, methodology of reducing detailed network into an equivalent network is introduced. This equivalent network is obtained by simplifying the complex network using Monte-Carlo Simulation technique. The results in this research are quantified and compared between these detailed and equivalent networks in reliability indices; SAIFI, SAIDI and CAIDI. The values of SAIFI, SAIDI and CAIDI in detailed network are slightly higher than in equivalent network.
Experimental study on the effect of bed aspect ratio to the drying rate of chilli for swirling fluidized bed dryer
Authors: Basrawi M F , Redzlan F , Ibrahim T K , Yudin A S M 
Published: June 2020

Abstract
Swirling Fluidized Bed Dryer (FBD) has better performance because of the improvement of air flow with less pressure drop. However less study focus on the performance of swirling FBD especially at small-scale. Thus, the objective of this study is to investigate drying characteristics of green chillies at different ratio of chilli, Rchilli
and bed aspect ratio, RBed
by the swirling fluidized bed dryer. An electrical blower with 600 W of power was used as a main source to supply air at flow rate of 0.324 kg/s which equals to the velocity at the distributor of 8.25 m/s. The chamber has 400 mm height and 150 mm diameter with maximum capacity of 2 kg. The air distributor used has 67% inclination angle to provide air swirling inside the FBD. It was found that RBed
increased from 0.8 to 1.6, the drying performance decreased in which the final moisture ratio was higher at 0.72-0.79 for RBed
= 1.6 as compared to better moisture ratio at 0.18-0.24 for RBed
= 0.8. The drying rate was at 0.225-0.275 %/min for RBed
= 0.8, and 0.075-0.10 %/min for RBed
= 1.6. When the Rchilli
increased from 1:1 to 2:1, the drying performance showed slightly decreased. Moisture ratio also slightly increased from 0.18 to 0.24 for RBed
= 0.8, whereas from 0.72 to 0.79 for RBed
= 1.6. This finding suggest that the RBed
has more significant effect than Rchilli
.
Experimental study of drying characteristics of cocoa bean in a swirling fluidized bed dryer
Authors: Zulkarnain M A , Shahriman M K , Yudin A S M 
Published: June 2020

Abstract
Drying is a process to reduce the weight for easy transportation and enhance the shelf life of product without quality losses over an extended period of time. Cocoa bean is an agricultural product that contains high moisture. The drying process of cocoa bean was conducted by two methods which are conventional method and swirling fluidized bed dryer. The conventional method is by drying under the sunlight. By using swirling fluidized bed dryer, it can shorten the time where heater is used to supply heat in this experiment. This fluidized bed dryer functions by the addition of design of air distributor used in the experiment. The distributor installed to improve mixing inside the bed. Therefore, in order to minimize the cost of using high capacity blower as well as to reduce energy, viable design of air distributor which can contribute to low pressure drop and improved particulate mixing in fluidized bed is essential. A fluidized bed column of 108 mm in diameter with one slotted distributor with inclination angles of 45º is used in the experiment. We find the results by using 1kg sample for conventional method are 11 days drying time, 58.55% weight loss reduction, and 0.4145 moisture ratio. Meanwhile for swirling fluidized bed dryer the time required was 2 days, 59.16% weight loss reduction, and 0.4083 moisture ratio. Based on the results obtained, the drying by using swirling fluidized bed dryer is more efficient compare to conventional method.
The stability of TiO2/POE nanolubricant for automotive air-conditioning system of hybrid electric vehicles
Authors: Hamisa A H , Yusof T M , Azmi W H , Mamat R , Sharif M Z 
Published: June 2020

Abstract
Nanolubricant are containing nanoparticles that are mixed with the base lubricant. Nanoparticle consists of ultra-fine size of particles from 1 to 100 nm. It was widely used as additional material to enhance properties of lubricant. The thermo-physical properties of the nanolubricant enhanced and thus able to improve the performance of vapour compression refrigeration system (VCRS) and automotive air-conditioning (AAC) system. The stability condition is one of the priority in formulation of nanolubricant for new application in AAC system of hybrid electric vehicles (HEV). The main objective of this study is to investigate the stability of TiO2 nanoparticles dispersed in Polyol-Ester (POE) lubricant. The TiO2/POE nanolubricant was prepared at volume concentration of 0.01 to 0.1% using the two-step method without any surfactant. The stability investigations were conducted by using visual sedimentation observation, micrograph observation, UV-Vis Spectrophotometer measurement and zeta potential measurement. The findings by visual sedimentation observation showed the best stability condition for more than 14 days at 0.01% and 0.03% volume concentration. Meanwhile the optimum sonication time is observed at 5 hours by visual and supported by UV-Vis evaluation. Further, the concentration ratio from UV-Vis evaluation was recorded above 95% for 5 hours sonication time and more than 30 days observation. Finally, the Zeta potential for the present nanolubricant was measured with 81.1 mV and obtained within the range of very good stability condition. Hence, this can confirm a good stability condition for the present TiO2/POE nanolubricant. Further investigation is required for the properties evaluation and performance of the nanolubricant in AAC system of HEV.
TiO2-SiO2 nanofluid characterization: Towards efficient with water/ethylene glycol mixture for solar application
Authors: Fikri M A , Asri F F , Faizal W M , Adli H K , Mamat R , Azmi W H , Najafi G , Yusaf T 
Published: June 2020

Abstract
Nowadays renewable energy has been used widely as strong contenders to improve the plight of two billion people, mostly in rural areas, without access to modern forms of energy. In this study, the effect of using water/ethylene glycol-based TiO2-SiO2 nanofluid on the characteristic of the solar radiation test rig has been experimentally used to investigate the characteristic of TiO2-SiO2 nanofluid suspended in water/ethylene glycol for solar applications. The TiO2-SiO2 nanofluids were prepared at a volume concentration of 0.3, 0.5 and 0.7% and dispersed in a base fluid of water/ethylene glycol 60:40 and 70:30 TiO2-SiO2 with the one-step method. KD2 Pro measures thermal conductivity set equipment and viscosity by LVDV III Ultra Rheometer. Thermal conductivity results show that the increase with different temperatures but the temperature of viscosity decreases. For solar radiation test rig that the highest point indicates the end of the charging process and the beginning of the discharging process, the maximum concentrations of 0.7% are observed to consistently provide higher temperature output as compared to the other three concentrations of nanofluids based on solar radiation 300, 500 and 700 W/m2. Therefore, it can be concluded that the higher concentrations give ample time to the test tube to transfer the heat and thus increased its temperature during the charging process.
Organic-inorganic hybrid solar cells based on 1D ZnO/P3HT active layers and 0D Au as cathode
Authors: González Verónica , López Israel , Martín Palma Raul , Peña Yolanda , Gómez Idalia 
Published: June 2020

Abstract
In this paper two different methodologies for the assembling of organic-inorganic hybrid solar cells in 1D are presented: conventional and inverted. The conventional solar cell has the configuration of ITO/P3HT/ZnO/Au, while the inverted of ITO/ZnO/P3HT/Au. The active layers are composed of ZnO nanorods and P3HT nanorods. P3HT was synthesized by chemical oxidative polymerization and the nanorods were obtained by template assisted method. ZnO nanorods were synthesized by electrochemical method on ITO glass. The influence of the arrangement of the semiconductors was studied. The cathode of both solar cells was formed of gold nanoparticles (0D), synthesized by microwave method. The active layers were analyzed by UV–vis spectrophotometry, FTIR and SEM. Results of J-V curves indicate that the conventional solar cell has the highest current density due to the higher contact between the layers.
Stability and electronic properties of LaNiO2/SrTiO3 heterostructures
Authors: Bernardini F , Cano A 
Published: June 2020

Abstract
Infinite-layer nickelate thin films materialize an intriguing new platform for high-temperature unconventional superconductivity, with LaNiO2/SrTiO3 as reference setup. We discuss the relative stability of the elementary interfaces of this system and determine the corresponding electronic band structure. We find substantial changes compared to the bulk, in particular in relation to the 5d orbital contributions to the low-energy physics which can be totally replaced by purely Ni-3d flat bands. The d
9 configuration characteristic of cuprates can thus be supplemented by an extra interfacial ingredient destabilizing the normal non-superconducting state in these heterostructures.
Towards low- loss on-chip nanophotonics with coupled graphene and silicon carbide: a review
Authors: Rufangura Patrick , Folland Thomas G , Agrawal Arti , Caldwell Joshua D , Iacopi Francesca 
Published: June 2020

Abstract
The ability to control the interaction of light and matter at the nanoscale is at the heart of the field of nanophotonics. This subdiffractional confinement of light can be achieved through the stimulation of surface polaritons, most notably surface plasmon polaritons (SPPs). However, the high optical losses and lack of tunability of conventional plasmonic materials have hindered major progress in this field. In the search for alternative low-loss and tunable materials, graphene and polar dielectric materials are viewed as potential alternatives to more common metal-based plasmonic materials. In particular, the possibility of combining the tunable nature of graphene SPPs with the high-quality factors and long lifetimes of surface phonon-polaritons (SPhPs) modes supported in polar dielectric materials (e.g. SiC) offers great promise for advanced nanophotonic applications. The combination of graphene SPPs and SPhPs supported in SiC is even more pertinent as this material system can be realized in the form of epitaxial graphene (EG), whereby sublimation of silicon from a SiC results in a surface reconstruction into a graphene surface termination. This offers an ideal technology platform for realizing hybrid SPP-SPhP modes. In this review, we outline advances in graphene plasmonics and the generation of SPhPs in polar materials, in the context of epitaxial graphene. We review recent attempts at realizing such coupling of graphene SPPs with phonon and SPhP modes in SiC, as well as covering such modes in other polar materials and conclude with an overview of advantages and challenges for further advancement of nanophotonics based on graphene on silicon carbide for on-chip light manipulation.
Peripheral Blood Examination Findings in SARS-CoV-2 Infection
Authors: Nazarullah Alia , Liang Christine , Villarreal Andrew , Higgins Russell A , Mais Daniel D 
Published: June 2020

Abstract

Objectives
Peripheral blood abnormalities in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have not been fully elucidated. We report qualitative and quantitative peripheral blood findings in coronavirus disease 2019 (COVID-19) patients and compare them with a control group.

Methods
We reviewed electronic medical records, complete blood counts, peripheral blood smears, and flow cytometry data in 12 patients with SARS-CoV-2. These were compared with 10 control patients with symptoms suspicious for SARS-CoV-2 but who tested negative.

Results
No significant differences were noted in blood counts, except that absolute lymphopenia was present frequently in the control group (P &lt; .05). Acquired Pelger-Huët anomaly (APHA) was noted in all COVID-19 cases, in most cases affecting over 5% of granulocytes. This contrasted with APHA in only 50% of control cases, affecting fewer than 5% of granulocytes in all cases (P &lt; .05). Monolobate neutrophils were exclusive to COVID-19 cases. COVID-19 patients had greater frequency of plasmacytoid lymphocytes (P &lt; .05). Flow cytometry data revealed absolute CD3+ T-cell count reduction in 6 of 7 patients; all of them required mechanical ventilation.

Conclusions
Lymphopenia was infrequent in our COVID-19 cohort; however, flow cytometric analysis revealed absolute T-cell count reduction in most cases. COVID-19 cases had significant APHA with monolobate neutrophils and plasmacytoid lymphocytes as compared to controls.
Y-site physical compatibility of hydrocortisone continuous infusions with admixtures used in critically ill patients
Authors: Foushee Jaime A , Meredith Pmichiaele , Fox Laura M , Wilder Alyson G 
Published: June 2020

Abstract

Purpose
Critically ill patients with septic shock often receive multiple intravenous medications, necessitating either the placement of separate lines for medication administration or administration of medications concurrently through a Y-site connector only where compatibility has been demonstrated. The purpose of this study was to examine the physical compatibility of hydrocortisone infusions and select intravenous medications through a simulated Y site.

Methods
The medications tested for simulated Y-site physical compatibility with hydrocortisone included acetaminophen, albumin, cefepime, ciprofloxacin, cisatracurium, doripenem, epinephrine, esomeprazole, ibuprofen, levofloxacin, levothyroxine, meropenem, and norepinephrine. Hydrocortisone in solution with 0.9% sodium chloride injection was combined with an equivalent volume of solutions of each test drug at maximum or commercially available concentrations used clinically in intensive care units, as appropriate. The samples were evaluated using turbidimetric measurements and examined visually against light and dark backgrounds to determine physical compatibility. Observations and analyses were completed over a one-hour period at 15-minute intervals beginning immediately after mixing. Each test was performed in triplicate.

Results
All study medications demonstrated visual and/or turbidimetric physical compatibility when combined with hydrocortisone in a simulated Y-site infusion. No medications demonstrated a visual physical incompatibility when combined with hydrocortisone.

Conclusion
Acetaminophen, albumin, cefepime, ciprofloxacin, cisatracurium, doripenem, epinephrine, esomeprazole, ibuprofen, levofloxacin, levothyroxine, meropenem, and norepinephrine exhibited physical compatibility with hydrocortisone via Y-site infusion.
Predicting human microbe–disease associations via graph attention networks with inductive matrix completion
Authors: Long Yahui , Luo Jiawei , Zhang Yu , Xia Yan 
Published: June 2020

AbstractMotivationhuman microbes play a critical role in an extensive range of complex human diseases and become a new target in precision medicine. In silico methods of identifying microbe–disease associations not only can provide a deep insight into understanding the pathogenic mechanism of complex human diseases but also assist pharmacologists to screen candidate targets for drug development. However, the majority of existing approaches are based on linear models or label propagation, which suffers from limitations in capturing nonlinear associations between microbes and diseases. Besides, it is still a great challenge for most previous methods to make predictions for new diseases (or new microbes) with few or without any observed associations.Resultsin this work, we construct features for microbes and diseases by fully exploiting multiply sources of biomedical data, and then propose a novel deep learning framework of graph attention networks with inductive matrix completion for human microbe-disease association prediction, named GATMDA. To our knowledge, this is the first attempt to leverage graph attention networks for this important task. In particular, we develop an optimized graph attention network with talking-heads to learn representations for nodes (i.e. microbes and diseases). To focus on more important neighbours and filter out noises, we further design a bi-interaction aggregator to enforce representation aggregation of similar neighbours. In addition, we combine inductive matrix completion to reconstruct microbe-disease associations to capture the complicated associations between diseases and microbes. Comprehensive experiments on two data sets (i.e. HMDAD and Disbiome) demonstrated that our proposed model consistently outperformed baseline methods. Case studies on two diseases, i.e. asthma and inflammatory bowel disease, further confirmed the effectiveness of our proposed model of GATMDA.Availabilitypython codes and data set are available at: https://github.com/yahuilong/GATMDA.Contactluojiawei@hnu.edu.cn.
Webina: an open-source library and web app that runs AutoDock Vina entirely in the web browser
Authors: Kochnev Yuri , Hellemann Erich , Cassidy Kevin C , Durrant Jacob D 
Published: June 2020

Abstract

Motivation
Molecular docking is a computational technique for predicting how a small molecule might bind a macromolecular target. Among docking programs, AutoDock Vina is particularly popular. Like many docking programs, Vina requires users to download/install an executable file and to run that file from a command-line interface. Choosing proper configuration parameters and analyzing Vina output is also sometimes challenging. These issues are particularly problematic for students and novice researchers.

Results
We created Webina, a new version of Vina, to address these challenges. Webina runs Vina entirely in a web browser, so users need only visit a Webina-enabled webpage. The docking calculations take place on the user’s own computer rather than a remote server.

Availability and implementation
A working version of the open-source Webina app can be accessed free of charge from http://durrantlab.com/webina.

Supplementary information
Supplementary data are available at Bioinformatics online.