bluuebunny/crossref_metadata_2025_split huggingface dataset:
Monitoring the water quality in our rivers in urban areas
Authors: Pchelkin G A , Kosolapov V , Zhuchenko A , Switala F 
Published: October 2022

Abstract
The problems of river pollution with various hazardous elements on the example of the Volkovka river are considered. A study of water from various regions of the Volkovka river was carried out for the presence of various chemical compounds and elements in them. A relationship has been established between the location of the river bed in the city and the level of pollution by various compounds. The comparison of the measurement results with the previously obtained data is carried out and the tendency of changes in pollution is established.
Parameters of acute toxicity and sensitizing properties of a microbiological preparation based on L. acidophilus IV138 and B. subtilis GA24 strains
Authors: Mukhammadiev Rish S , Mukhammadiev Rin S , Rud I V , Rud S V , Mukhammadieva A S , Ivanochkin I A , Yarullin A I , Valiullin L R 
Published: October 2022

Abstract
This article presents the results of a study of the parameters of acute toxicity and sensitizing properties of a microbiological additive based on probiotic strains L. acidophilus IV138 and B. subtilis GA24 on White Wistar rats and White Giant rabbits. The acute toxicity class of the prototype feed additive was established in accordance with the fundamental document OECD Test № 423 “Acute Oral Toxicity - Acute Toxic Class Method” (2001). The evaluation of the irritating properties of the microbiological preparation was carried out by the method of skin applications and using the test conjunctival test. The research results showed that the probiotic preparation does not have acute toxicity when administered orally to warm-blooded animals, sensitizing properties in the conjunctival test and skin application. According to the results of experimental studies, the feed additive containing L. acidophilus IV138 and B. subtilis GA24 strains is classified as a low-hazard product.
Recombination radiation of heteroepitaxial structures with InAs quantum dots grown on surface of (311)B GaAs by MBE
Authors: Kuznetsova Y A , Bayramov F B , Toporov V V , Bairamov B H , Yu Rud V , Glinushkin A P 
Published: October 2022

Abstract
Dynamics of recombination radiation is found to be fundamental for control the efficiency of quantum dots (QDs) based structures for different range of optoelectronic device applications. We presented results of an experimental study of recombinational radiation of heteroepitaxial strongly confined InAs QD structures with s which are grown up on a surface of the semi-insulating (311)B GaAs substrate by molecular beam epitaxy. It is shown that for the InAs QDs dots, with characteristic dimensions of 12 x 6 nm2, half-width (FWHM) of the observed recombination line attributed to the main electronic fundamental transition of the exciton at 1.1690 meV at T = 77 K is 41.58 meV. This value of FWHM is substantially less than typical literature values obtained under comparable experimental conditions for heteroepitaxial structures with InAs QDs, grown on vicinal surfaces of (100) GaAs substrate with angle of disorientation 7° relative to direction [001].
New environmental policy of the European Union: some aspects of transition to green energy
Authors: Asadov B , Asadov E 
Published: October 2022

Abstract
The implementation of the EU’s new environmental policy, the Green Deal, among other important areas, provides for enhanced energy efficiency. The increase in the share of green energy as a result of the targeted use of environmentally oriented development strategies of the EU is increasingly acting as a driver for creating a new clean energy industry. Attempts have been made to consider certain aspects of the transition to green energy, which causes ambiguous assessments and protracted discussions. The expected changes in the clean, affordable and safe energy transition may not always go as planned and will have profound implications. In this regard, these risks are considered as an objective phenomenon and their growing impact on green energy price adjustments is huge.
Influence of flame spraying on the mechanical and tribological properties of 42CrMo4 steel
Authors: Opačak Ivan , Turmanidze Raul , Dašić Predrag , Popkhadze Giorgi 
Published: October 2022

Abstract
Flame spraying is a thermal spray coating process that produces high quality surface coatings using heat, from the combustion of a fuel gas with oxygen. In the experimental part of the paper, laboratory tests were carried out on selected sprayed samples in terms of sample preparation for testing, measurement of chemical composition, recording of characteristic microstructures, measurement of hardness in the sample cross-section and tribological tests. Based on the analysis of the collected test results, it can be concluded that with increasing number of cycles at constant load, there is a mass loss of AISI431 (test sample 1) and Metco 350NS (test sample 2) coatings.
Reducing the Economic Risk and Increasing the Operational Profit
Authors: Stoenoiu C E 
Published: October 2022

Abstract
Reducing economic risk is a constant concern of companies to survive in the market. In this study, the economic risk was analyzed through the prism of two possible variants: the level of the physical volume of the production or the refurbishment. It was found that it can be reduced in both situations due to the existence of several production options and that economic risk is directly related to operating profit when the change is made only by increasing the quantity of the first product and decreasing the second product. In the case of refurbishment, the connection is reversed, respectively, when the operating profit decreases, the coefficient of the operational leverage increases. The 25% increase in sales revenues produces more favorable effects in the case of refurbishment.
LabVIEW-based solar air heater monitoring system
Authors: Ifrim V-C , Bejenar C , Milici L-D , Atănăsoae P 
Published: October 2022

Abstract
Solar air heaters are equipment which have the ability to convert solar energy into thermal energy by means of an internal air flow. The development of such a system is closely related to the presence of solar radiation without which it is not possible to obtain thermal energy. For maximum yields it is necessary to establish the performance or thermal capacity of a solar air heating system. For this purpose, it is recommended to use a monitoring system, which has the ability to indicate the weaknesses of the equipment. This paper presents a model of monitoring using the LabVIEW software via a DAQ USB device, two thermocouple sensors type J, one humidity sensor, a pyranometer and four signal adapters. The commercial solar air heater and a thermostat, are also part of the monitoring system. The purpose of the current study is a short analysis of the performances of a solar air heater with the assistance of a monitoring system and the proposal of constructive changes to increase the thermal efficiency. The work completes with graphically presented results and conclusions that emerge from the study.
Key performance indicators used to measure the adherence to the iterative software delivery model and policies
Authors: Făgărăşan C , Cristea C , Cristea M , Popa O , Mihele C , Pîslă A 
Published: October 2022

Abstract
This paper analyzes the Agile metrics embedded in the widely adopted issue tracking tools and used by agile teams to deliver software products. Organizations face challenges when they are required to measure the performance of all the teams operating within the company to provide a holistic view of the software delivery performance at a higher level. A new set of key performance indicators (KPIs) is introduced that can help software companies standardize their delivery across the organization and provide an overview of the software delivery performance that can serve as an insight for the top management teams. The new metrics are applied to a project as part of a case study. The conclusions highlight that the metrics provided by the issue tracking systems do not provide insights into the non-functional requirements of the software products, the methodology applied during the delivery, and the quality of each increment produced. The proposed set of KPIs addresses these shortcomings.
The influence of reduced velocity on the control of two-degree-of-freedom vortex induced vibrations of a circular cylinder via synthetic jets
Authors: Wang Haibo , Yu Hailong , Sun Yunlan , Sharma Rajnish N 
Published: October 2022

Abstract
A two-dimensional numerical study is conducted to investigate the influence of the reduced velocity on two-degree-of-freedom vortex induced vibrations of a circular cylinder controlled by synthetic jets ejected in horizontal and vertical directions (β = 0° and β = 90°). The Reynolds number is constant at Re = 150, and the reduced velocity varies in the range of 2.5 and 15 (U*
= 2.5–15). The mass ratio of the circular cylinder is 2.0, and the in-flow to the cross-flow natural frequency ratio equals 1.0 (f
nx
/f
ny
= 1.0). The oscillation characters, hydrodynamic forces and vortex shedding of circular cylinders with or without synthetic jets control are analyzed and compared. The results indicate that synthetic jets ejected in vertical direction (β = 90°) can intensify both in-flow and cross-flow oscillations of the circular cylinder in the whole reduced velocity range, the vortex shedding of the controlled case (β = 90°) becomes complicated even unstable with the reduced velocity increasing. Synthetic jets ejected in horizontal direction (β = 0°) have excellent performance on suppressing the cross-flow oscillation of the circular cylinder in the whole reduced velocity range. When U*
⩾ 8.0, the in-flow oscillation of the circular cylinder can even be intensified by synthetic jets ejected in horizontal direction (β = 0°).
High flux durability underwater superoleophobic mesh modified by poly (maleic acid mono-(2-(dimethylamino)-ethyl ester-co-hydroxyethyl acrylate) and nanosilica particles hybrid
Authors: Mao Wentao , Qiao Baolei , Kong Qinggang , He Wenjun , Qian Haiyan 
Published: October 2022

Abstract
It is difficult to separate oil-polluted water mixtures, which has been considered a global problem. In this study, a simple dip-coating process was used to produce a stainless-steel mesh coated with poly (malaic acid mono-(2-(dimethylamino)-ethyl ester-co-hydroxyethyl acrylate)-tetraethyl orthosilicate-silica (P(MDME-co-HEA)-TEOS-SiO2). The membrane’s shape, chemical composition, separation capabilities, and mechanical properties were carefully examined. The membrane was extremely hydrophilic and extremely oil-phobic underwater due to its rough surface structure and hydrophilic chemical composition. For petroleum ether/water mixture, the separation flux of the membrane reached 224,600 l·m−2·h−1, with a 99.96% separation efficiency. The coated mesh also presented outstanding anti-oil fouling performance. Moreover, it exhibited excellent mechanical resistance and chemical stability.
Novel fabrication and development of multifunctional Zn/Fu@Cs nanofibers material for wound care and operate room infection control
Authors: Wang Yi , Zhao Guoyan 
Published: October 2022

Abstract
Treatment of operate room wounds infections is a clinically more challenging process. Therefore, several techniques and wound care materials have been taken to improve wound healing mechanisms. The present study is mainly focused on zinc oxide and fucoidan-loaded chitosan nanofiber scaffolds fabricated by the electrospinning method. The functional groups, morphology, and hydrothermal stability of fabricated Zn/Fu@Cs were observed and investigated by microscopic and some spectroscopic techniques. The wound healing potential of Zn/Fu@Cs nanofiber has been evaluated by various in vitro biological experiments. In addition, the prepared nanofiber showed suitable bacterial growth inhibition against P. aeruginosa, B. subtilis, S. aureus, and E. coli wound infecting bacteria and in vitro studies confirmed the excellent cell proliferation, and cytocompatibility. In vitro study exhibited significant cell proliferation and viability is observed in Zn/Fu@Cs nanofiber treated L929 cells within 3 days, which is comparable to the control it is higher. In wound scratch assay the wound healing efficiency has been monitored on the human skin fibroblast L929 cell line. The wound scratch experiment results revealed that the Zn/Fu@Cs nanofiber shows quick cell regeneration without bacterial infections. The biodegradation study concluded the biocompatibility of nanofibers under physiological condition. The overall results suggest that the Zn/Fu@Cs nanofiber is a potential material for wound care with enhanced antibacterial property against operate room pathogens.
The effect of diamond like carbon coating on the wear resistance at dry sliding conditions
Authors: Al-Asadi Maitham Mohammed , Al-Tameemi Hamza A 
Published: October 2022

AbstractWear due to sliding is an inevitable problem in many engineering applications. Protective surface coating is usually used to mitigate this problem. The development in this field is continuous and consistent. There are many types of coatings according to their compositions and the deposition methods. One of the coatings with the most promising properties, such as the hardness, is the Diamond-Like Carbon (DLC) coating. The tribological properties of this coating generated by Plasma-Assisted Chemical Vapor Deposition (PACVD) and applied on bearing steel 52100 ASTM are not available. In this study, the wear resistance of the DLC coating applied to bearing steel 52100 ASTM, was evaluated. The coating method employed was PACVD, which is regarded as one of the most distinctive coating techniques due to the unique tribological properties imparted to the coating. The pin-on-disc tribometer was used to examine the coefficient of friction and mass losses for samples of (steel disc against steel ball) and (DLC coated disc against DLC coated ball) under constant sliding velocity and constant sliding distance with four different loads (2, 5, 10 and 20 N) that results in maximum contact pressure below and higher than the maximum shear stress of the bearing steel. The wear coefficient was calculated using Archard’s equation based on the experimental results. It was found that the DLC coating may result in significant reduction, reaching 93.5%, in weight loss and 83% in COF at low contact pressure (less than the maximum shear stress). However, at high contact pressure (equals to or higher than the maximum shear stress) the weight loss and the COF for the DLC coating are higher than those of the bearing steel. This behavior indicates that the DLC coated pair may not be suitable at high loads. The wear coefficient is calculated for each testing condition and it is found to be affected by the applied load. The average wear coefficient for the DLC coating is provided which can be used with the Archared wear model to predict the wear rate within the range of the parameters used in this study.
Performance characterization and pyrolysis kinetics of graphene-reinforced, green rigid polyurethane foam
Authors: Gu Xiaohua , Wang Xiaoyao , LIu Siwen , Guo Xinyu , Wang Tong , Fan Anyu , Liu Yan 
Published: October 2022

Abstract
Rigid polyurethane (PU) foam waste was chemically degraded by the two-component alcoholysis agent of diethylene glycol and ethanolamine and graphine oxide (GO), and PU/GO nanocomposites were obtained by one-step foaming. Rigid PU foam was chemically degraded by adding different proportions of two-component alcoholysis agent and GO. Research on the introduction of GO to degrade PU matrices, using different proportions of the alcoholysis agent degradation law of PU oligomer polyols for regeneration, was conducted through the viscosity and hydroxyl value of recycled polyol determination, the infrared spectrum of foam samples, x-ray photoelectron spectroscopy, density, water absorption, thermogravimetric and polarizing microscope analysis. The results showed that the compressive strength of PU/GO nanocomposites increased to 0.2754 MPa by 9.6% when the amount of graphene was 0.5% and the thermal conductivity 0.0120 W m−1·K−1, which is 4.8% reduction. The Kissinger equation was used to calculate the activation energy of the regenerated PU pyrolysis reaction. The results showed that the activation energy of the regenerated PU pyrolysis reaction was improved by adding the graphene.
Development of an upgraded motional Stark effect diagnostic system on EAST tokamak
Authors: LI Yichao , FU Jia , HUANG Yao , QIAN Jinping , TI Ang , BAE Cheonho , FU Shengyu , LI Jiankang , GU Yongqi , LUO Zhengping , KO Jinseok , WEI Yongqing , LIU Dongmei , XIAO Bingjia , LYU Bo , GONG Xianzu , WAN Baonian 
Published: October 2022

Abstract
A new multi-channel motional Stark effect (MSE) diagnostic system has been developed on the upgraded EAST tokamak, which was installed on the port C to observe a tangential neutral beam. A telecentric imaging lens was deployed to ensure uniform illumination from the core to the boundary. A square fiber head which contained 23 fiber bundles was mounted to this imaging lens; each fiber bundle contained 19 fibers and two of them were assigned to CXRS and BES spectrometer, respectively. The angle tuning method was used for matching the Doppler shift of the σ component’s wavelength which was caused by the beam voltage. At the present stage, the MSE system only contains ten channels that would be extended to 23 channels in the future, covering a measurement range from R = 1.8 to R = 2.27 m with a temporal resolution of 10 ms and a spatial resolution of 3 cm. The polarization angle-constrained q profiles and current density profiles were reconstructed with EFIT equilibrium reconstructions. In the sawtooth discharges, the q = 1 surface position was validated by the ECE signals, which further verified the rationality of the MSE measurement.
The effect of Na doping on layered LiNi1/3Co1/3Mn1/3O2 single-crystal structure as a cathode for lithium-ion batteries
Authors: Yu Dongsheng , Li Jili , Min Zhiyu , Tang Chunjuan , Meng Peiguo , Chen Baotai 
Published: October 2022

Abstract
A cathode with single-crystal structure for Li-ion batteries is shown to provide stable cycle performance because of its integrated crystal structure and smaller internal stress. Here, Na+ ions with larger radius are doped into LiNi1/3Co1/3Mn1/3O2 (LNCMO) single-crystal nanoparticles through a simple sol–gel method to further improve the rate capability. Different amounts of Na doping are considered to illustrate the cooperative effect of single-crystal structure and Na doping. The results indicate that a Li0.9Na0.1Ni1/3Co1/3Mn1/3O2 cathode has a discharge capacity of 193.7 mAh g–1 at 0.2 C, much higher than the 174.8 mAh g–1 of its undoped counterpart. After 50 cycles, the capacity retention is enhanced from 71.3% for undoped LNCMO to 89.2% for Li0.9Na0.1Ni1/3Co1/3Mn1/3O2. At the same time, Li0.9Na0.1Ni1/3Co1/3Mn1/3O2 delivers a discharge capacity of 137.9 mAh g–1 at 10 C, about twice the capacity of LNCMO. Na ions doped into the lattice can magnify the distances between lithium layers and act as pins for more stable structure and faster kinetics of Li+-ion diffusion.
Improving breast cancer diagnosis by incorporating raw ultrasound parameters into machine learning
Authors: Baek Jihye , O’Connell Avice M , Parker Kevin J 
Published: October 2022

Abstract
The improved diagnostic accuracy of ultrasound breast examinations remains an important goal. In this study, we propose a biophysical feature-based machine learning method for breast cancer detection to improve the performance beyond a benchmark deep learning algorithm and to furthermore provide a color overlay visual map of the probability of malignancy within a lesion. This overall framework is termed disease-specific imaging. Previously, 150 breast lesions were segmented and classified utilizing a modified fully convolutional network and a modified GoogLeNet, respectively. In this study multiparametric analysis was performed within the contoured lesions. Features were extracted from ultrasound radiofrequency, envelope, and log-compressed data based on biophysical and morphological models. The support vector machine with a Gaussian kernel constructed a nonlinear hyperplane, and we calculated the distance between the hyperplane and each feature’s data point in multiparametric space. The distance can quantitatively assess a lesion and suggest the probability of malignancy that is color-coded and overlaid onto B-mode images. Training and evaluation were performed on in vivo patient data. The overall accuracy for the most common types and sizes of breast lesions in our study exceeded 98.0% for classification and 0.98 for an area under the receiver operating characteristic curve, which is more precise than the performance of radiologists and a deep learning system. Further, the correlation between the probability and Breast Imaging Reporting and Data System enables a quantitative guideline to predict breast cancer. Therefore, we anticipate that the proposed framework can help radiologists achieve more accurate and convenient breast cancer classification and detection.
Standardized neonatal continuous infusion concentrations: A quality improvement initiative
Authors: Mulvihill Christine , McDonald Danielle 
Published: October 2022

Abstract

Purpose
Medication errors are a significant and preventable source of patient harm, especially in the neonatal population. Standardized infusion concentrations increase patient safety and streamline the workflow for pharmacists, nurses, and physicians.

Methods
Neonatal continuous infusion concentrations were standardized and implemented into the electronic health record using an automated order panel. Pre- and postimplementation data were collected to assess the impact of this quality improvement initiative. The primary endpoint was the proportion of neonatal intensive care unit infusion orders that were compatible with “bolus from infusion” functionality in the syringe pump.

Results
Before implementation, only 40% of eligible infusions were compatible with the “bolus from infusion” function, compared to 93% after implementation (P &lt; 0.00001). Within the syringe pump, the ratio of total options to the number of concentrations per medication was reduced by 31%.

Conclusion
Implementation of an order panel with defaulted standard infusion concentration selection improved workflow and optimized technology in the neonatal intensive care unit.