bluuebunny/crossref_metadata_2025_split huggingface dataset:
SPECIFICS OF DIAGNOSTICS OF TECHNICAL CONDITION OF TRANSPORT AND TECHNOLOGICAL SYSTEM “MINING GAS PIPELINE – MINE WORKING”
Authors: Shyrin Leonid , Yehorchenko Rostislav , Sergienko Мykola 
Published: December 2021

The purpose of the paper is to analyze a deformation mechanism of the mine degassing pipelines to forecast their spatial changes in terms of intensification of underground mining of coal-gas seams.
Methodology. The paper deals with expert assessment of the available approaches to diagnostics of technical condition of mine degassing pipelines, which are constructed within the in-seam underground mine workings with the floor rocks prone to heaving. The results of scheduled surveying measurements of technical condition of in-seam development workings have helped identify the potentially hazardous zones of rock mass deformation and indices of changes in spatial location of section degassing pipelines mounted in those mine workings. To determine the operating modes of a degassing pipeline under such operating conditions, a computer model of interaction of the elements of transport-technological system “mine gas pipeline – mine working” has been developed
Findings. Diagnostics of technical conditions of the mine gas transmission lines and examination of their dismantled components have helped understand that deflections, mainly resulting in water accumulation zones, intensive corrosion of internal pipe walls, and mechanical depositions of coal and rock dust take place right within the flange connection areas. Formation of such zones is argued by health of the degassing pipeline as well as mine air inflow. Availability of internal corrosion, water accumulations, and mine air inflow decreases substantially capacity of the underground gas transmission line inclusive of qualitative characteristics of the captured methane-air mixture and efficiency of MDS on the whole.
Originality. New approaches to diagnostics of technical condition of mine degassing gas pipeline in difficult mining and geological conditions of development of gas-bearing coal seams are substantiated and it is offered to consider indicators of their functioning as interacting in space and time transport-technological system "mine gas pipeline - mining".
Practical implications. The operational parameters of mine degassing systems notes that the equipment performance with the least underpressure losses created by vacuum pipes requires that the degassing pipeline should have minimum hydraulic resistance of the gas transmission network. Pipeline aeration from the mine workings and water accumulations should be prevented by means of qualitative hermetic sealing of its flange connections as well as the pipeline straightness with the corresponding pitches. Consequently, the basic requirements for operating mine degassing pipelines involve their design profile, tightness of flange connections of pipes as well as operative control of the facility health.
REFLEXÕES ACERCA DO ACESSO À APOSENTADORIA EM FACE DO GÊNERO
Authors: Kamada Fabiana Larissa , Cantal Rosa Costa 
Published: December 2021

Este artigo científico tem como objetivo promover uma reflexão a respeito das alterações promovidas pela Emenda Constitucional nº 103/2019 com relação aos requisitos necessários para aposentadoria da mulher em comparação com a aposentadoria do homem. Apresenta uma análise sobre a participação de homens e mulheres no mercado de trabalho (remunerado), bem como as horas dedicadas à reprodução social, que não é contabilizada para fins de aposentadoria, a partir da demonstração das inter-relações entre as suas atividades laborais e sociais. O presente trabalho examinou estudos que mostraram a dificuldade enfrentada pela mulher para conseguir o tempo necessário para aposentadoria, uma vez que manter-se no emprego, por inúmeros fatores, é muito mais complicado para ela. Dessa forma, verificar-se-á se houve mudanças significativas no mercado de trabalho da mulher, bem como se há uma igualdade de condições entre os sexos de modo a justificar essas alterações, uma vez que os requisitos ficaram ainda mais rigorosos para as mulheres e que isso pode impactar de forma negativa para elas.
Development of New Models to Determine the Rheological Parameters of Water-based Drilling Fluid Using Artificial Intelligence
Authors: Hadi Farqad , Noori Ali , Hussein Hussein , Khudhair Ameer 
Published: December 2021

Abstract
It is well known that drilling fluid is a key parameter for optimizing drilling operations, cleaning the hole, and managing the rig hydraulics and margins of surge and swab pressures. Although the experimental works present valid and reliable results, they are expensive and time consuming. On the other hand, continuous and regular determination of the rheological mud properties can perform its essential functions during well construction. More uncertainties in planning the drilling fluid properties meant that more challenges may be exposed during drilling operations.
This study presents two predictive techniques, multiple regression analysis (MRA) and artificial neural networks (ANNs), to determine the rheological properties of water-based drilling fluid based on other simple measurable properties. While mud density (MW), marsh funnel (MF), and solid% are key input parameters in this study, the output functions or models are plastic viscosity (PV), yield point (YP), apparent viscosity (AV), and gel strength. The prediction methods were demonstrated by means of a field case in eastern Iraq, using datasets from daily drilling reports of two wells in addition to the laboratory measurements. To test the performance ability of the developed models, two error-based metrics (determination coefficient R2 and root mean square error RMSE) have been used in this study.
The current results of this study support the evidence that MW, MF, and solid% are consistent indexes for the prediction of rheological properties. Both mud density and solid content have a relative-significant effect on increasing PV, YP, AV, and gel strength. However, a scattering around each fit curve is observed which proved that one rheological property alone is not sufficient to estimate other properties. The results also reveal that both MRA and ANN are conservative in estimating the fluid rheological properties, but ANN is more precise than MRA. Eight empirical mathematical models with high performance capacity have been developed in this study to determine the rheological fluid properties based on simple and quick equipment as mud balance and marsh funnel. This study presents cost-effective models to determine the rheological fluid properties for future well planning in Iraqi oil fields.
Characterization of Tio2 And An As-Prepared Tio2/Sio2 Composite And Their Photocatalytic Performance For The Reduction Of Low-Concentration N-NO3- In Water
Authors: Zhong Wanzhen , Fu Weizhang , Sun Shujuan , Wang Lingsheng , Liu Huaihao , Wang Junzhi 
Published: December 2021

Abstract
Excessive N-NO3- water pollution has become a widespread and serious problem that threatens human and ecosystem health. Here, a TiO2/SiO2 composite photocatalyst was prepared via the sol-gel/hydrothermal method. TiO2 and TiO2/SiO2 were characterized by X-ray diffraction (XRD), UV-Vis differential reflectance spectroscopy (DRS), Fourier infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). Afterward, the photocatalytic performance of TiO2 and TiO2/SiO2 to reduce low nitrate concentrations (30 mgN·L-1) under UV light were evaluated and the effects of different factors on this process were investigated, after which the reaction conditions were optimized. Removal rates of up to 99.93% were achieved at a hole scavenger (formic acid) concentration of 0.6 mL·L-1, a CO2 flow rate of 0.1 m3·h-1, and a TiO2 concentration of 0.9 g·L-1. In contrast, TiO2/SiO2 at a 1.4 g·L-1 concentration and a TiO2 load rate of 40% achieved a removal rate of 83.48%,But with more than 98% of nitrogen generation rate.NO2- and NH4+ were the minor products, whereas N2 was the main product.
Link prediction of viral spike proteins and cell receptors using structural perturbation method
Authors: Zhou Iris 
Published: December 2021

Abstract
Many protein receptors for animal and human viruses have been discovered in decades of studies. The main determinant of virus entry is the binding of the viral spike protein to host cell receptors, which mediates membrane fusion.In this work, a bilayer network is constructed by integrating the similarity network of the viral spike proteins, the similarity network of host receptors, and the association network between viruses and receptors. The structural perturbation method (SPM) is used to predict possible emerging infection of a virus in potential new host organisms. The reliability of this method is based on the hypothesis that the major barrier to virus infection is the differences in the compatibility of spike proteins and cell receptors, which is determined by the amino acid sequences among species.
The Effect of COVID-19 on Referral Time and Cost of Outpatient'S Services Amongst Insured of Iran Health Insurance, Fars, 2020
Authors: Nowrouzpour Mitra , Lotfi Farhad , Foroozanfar Zohre , Mourdzadeh Hossein , parizi Mostafa Iran nezhad , Joulaei Hassan 
Published: December 2021

Abstract
Background
This study aimed to investigate the effect of COVID-19 epidemic on the rate of referral and costs of outpatient services covered by Iran Health Insurance, Fars, Iran.
Methods
In this cross-sectional study, we used data registry system of Iran health insurance to compare cost of outpatient services and referral time after occurring COVID-19 epidemic with the same time before it. Extracted items included; outpatients’ and complementary services. Statistical analyses were performed with Graph Pad Prism software version 8.0, Wilcoxon and Mann-Whitney test.
Results
Costs paid for all outpatient and imaging services significantly decreased in 2020 compared to 2019. Also, the number of prescriptions in all outpatient services has significantly decreased, while the number of imaging diagnostic tests significantly increased.
Conclusion
Further studies are recommended to evaluate whether the reduction in cost of services and referral times are due to underutilization of services or not.
Residual Image Registration Error by Fiducial Markers in Accelerated Partial Breast Irradiation Using C-Arm Linac: A Phantom Study
Authors: Yamauchi Ryohei , Murayoshi Natsuki , Akiyama Shinobu , Mizuno Norifumi , Masuda Tomoyuki , Itazawa Tomoko , Kawamori Jiro 
Published: December 2021

Abstract
Introduction: External beam accelerated partial breast irradiation (APBI) is an alternative treatment for patients with early-stage breast cancer. The efficacy of image-guided radiotherapy (IGRT) using fiducial markers, such as gold markers or surgical clips, has been demonstrated. However, the effects of respiratory motion during a single fraction have not been reported. This study aimed to evaluate the residual image registration error of fiducial marker-based IGRT by respiratory motion and propose a suitable treatment strategy.Materials & Methods: We developed an acrylic phantom embedded with surgical clips to verify the registration error under moving conditions. The frequency of the phase difference in the respiratory cycle due to sequential acquisition was verified in a preliminary study. Fiducial marker-based IGRT was then performed in 10 scenarios. The residual registration error (RRE) was calculated on the basis of the differences in the coordinates of clips between the true position if not moved and the last position.Results: The frequencies of the phase differences in 0.0–0.99, 1.0–1.99, 2.0–2.99, 3.0–3.99, and 4.0–5.0 mm were 23%, 24%, 22%, 20%, and 11%, respectively. When assuming a clinical case, the mean RREs for all directions were within 1.0 mm, even if respiratory motion of 5 mm existed in two axes.Conclusions: For APBI with fiducial marker-based IGRT, the introduction of an image registration strategy that employs stepwise couch correction using at least three orthogonal images should be considered.
Comparison of Intracoronary Versus Intravneous Tirofiban in Acute STEMI Patients Undergoing Primary PCI
Authors: Tang Xiuying , Li Runjun 
Published: December 2021

Abstract
Objective: This study aimed to investigate the effect of intracoronary tirofiban compared to intravenously administered tirofiban in acute ST-elevation myocardial infarction (STEMI) patients treated with primary percutaneous coronary intervention (PPCI).Methods: This study included 180 patients who were admitted with the diagnosis of acute STEMI and undergoing primary PCI. Patients were randomized into an observation group (n = 90) and control group (n = 90). Both groups received typical treatments, such as aspirin and clopidogrel/ticagrelor. During the procedure, the observation and control groups were administered intracoronary (IC) or intravenous (IV) injections of tirofiban, respectively, followed by an intravenous infusion of tirofiban for 24 hours. Changes in thrombolysis in myocardial infarction (TIMI) flow grading, TIMI myocardial perfusion grade 3 (TMP grade 3), thrombus aspiration, brain natriuretic peptide (BNP) levels, creatine kinase peak and inflammatory factor levels, infarct size, resolution of the sum of ST‐segment elevation (Sum‐STR) two hours after the operation, and cardiac functional parameters were investigated before and/or after treatment and 6 months after discharge. The incidence of major adverse cardiovascular events (MACE) and adverse reactions (AEs) such as bleeding were compared between the two groups.Results: There were no statistically significant differences observed in the indices of BNP, creatine kinase peak, cardiac functional parameters, thrombus aspiration, or incidence of bleeding between the two groups before treatment. Following treatment, TIMI flow grading and TMP grade 3 were improved in the observation group that received intracoronary tirofiban compared to the control group (p = 0.022 and p = 0.014, respectively). Additionally, the Sum‐umi two hours after operation in the observation group was better than that in the control group (p = 0.029). The incidence of MACEs in patients given IC tirofiban administration was lower than that in those given IV tirofiban (p = 0.012). Furthermore, levels of glutamic oxaloacetictransaminase (AST), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and myocardial troponin I (TNI) in the observation group was significantly decreased compared to the control group after five days of treatment (p = 0.039, p = 0.040, p = 0.001, and p = 0.041, respectively). Functional heart parameters including CO and LVEF were significantly improved in the observation group 6 months after discharge.Conclusion: This study found that IC administration of tirofiban in patients with STEMI who underwent PPCI improved TIMI, TMP flow and cardiac function including CO and LVEF 6 months after discharge, and reduced CRP, ESR, and TNI. However, the incidence of bleeding between the two groups was comparable. These findings suggest that IC administration should be applied in certain acute STEMI patients.
Research on Eco-Efficiency of 11 Cities in Zhejiang Province: Based on the Perspective of High Quality Development
Authors: Xu Xu , Huang Lizhen 
Published: December 2021

Abstract
Ecological efficiency (Eco-efficiency) index well represents the quality of regional development and measures the extensive or intensive development mode of a region. The traditional concept of Eco-efficiency refers to the maximum economic benefits through the minimum resource cost and environmental load. This paper argues that the goal of Eco-efficiency evaluation is not only to maximize economic benefits, but also to achieve high-quality development in many aspects such as society, science & technology and economy, so that people can enjoy the results of development.In this paper, the Eco-efficiency input indicators comprehensively considers the consumption of manpower, resources, energy and capital, and negative environmental benefits including waste gas, waste water and waste residue. Output indicators comprehensively consider the five high-quality development dimensions----innovation, coordination, green, openness and sharing, which are represented by indicators such as patents, total import and export, the number of patent, regional Theil index, disposable income, three waste emissions et al. .In terms of empirical research, the SBM model of undesirable output super-efficiency under the assumption of variable returns to scale is established to measure the Eco-efficiencies of 11 cities in Zhejiang Province. Secondly, Malmquist index model is estalished to study the temporal and spatial changes of Eco-efficiencies. Finally, the panel Tobit method is used for regression analysis to study the key factors affecting the Eco-efficiency of Zhejiang Province. The results show that the industrialization structure, economic level and export trade significantly positively correlated with Eco-efficiency. Urbanization level is significantly negatively correlated with Eco-efficiency.
The Effect of The Herbicide of Glyphosate (Nphosphonomethyll Glycine) On Photosynthetic Pigments And Photosynthetic Activity of Basil (Ocimum Basilicum L.) By Laser-Induced Chlorophyll Fluorescence Spectroscopy
Authors: Tashish Wadah M. , Aldwayyan Abdullah S. , Ghaithan Hamid M. 
Published: December 2021

Abstract
The aim of this study was to investigate the effect of short and long term exposure to N-(phosphonomethyl)glycine (glyphosate) on the photosynthetic activity of Ocimum basilicum L. (basil) plants. Photosynthetic pigment content, chlorophyll fluorescence, and laser-induced chlorophyll fluorescence spectra of basil plants treated for 30, 50, or 70 days with either 0,1, 2, or 3 ml/L (H2O) glyphosate were measured. The ratio of the two fluorescence intensity maxima was calculated by evaluating curve-fitted parameters. Findings revealed that after 30 days of treatment, 1 ml/l (H2O) of glyphosate stimulated, whereas 2 and 3 ml/l (H2O) of glyphosate inhibited, photosynthetic activity of basil plants. In contrast, all tested concentrations of glyphosate became inhibitory after 50 and 70 days of treatment. This study clearly showed that at high concentrations (> 1 ml/l (H2O)), glyphosate is highly toxic to basil. This finding may be helpful for determining the optimal dose of glyphosate in agricultural practices.
Event-triggered-based Cooperative Game Optimal Tracking Control for Modular Robot Manipulator with Constrained Input
Authors: Li Yuanchun , Wei Chongyang , An Tianjiao , Ma Bing , DONG BO 
Published: December 2021

Abstract
In this paper, a cooperative game optimal tracking control method based on event-triggered mechanism for constrained input modular robot manipulators (MRMs) system is introduced. According to the joint torque feedback (JTF) technique, the dynamics model of the constrained input subsystem is established and the global state space equation is derived. The control inputs of $n$ joints in the MRM system with constrained input are taken as $n$ participants of cooperative game, the tracking control problem of the manipulator system is transformed into the optimal control problem based on the cooperative game. Next, a fusion function containing position and velocity errors is defined to construct the performance index function. In order to improve the control performance and robustness of the manipulator system, part of the known model information is used to devise controller, the model uncertainty is dealt by the neural network (NN) observer, and the optimal compensation control strategy is used to deal with internal disturbance such as sensor measurement error and transmission ripple due to power fluctuations, electromagnetic effects, noise and vibration. Based on the adaptive dynamic programming (ADP) algorithm and event-triggered mechanism, the optimal tracking control strategy is obtained by approximately solving the event-triggered Hamilton-Jacobi-Bellman (HJB) equation with the critic NN. The Lyapunov theory proves that trajectory tracking error of MRM system with constrained input is uniformly ultimately bounded (UUB). Finally, the experimental results demonstrate the effectiveness of the proposed control method.
Rural Food Environment, Caregiver Influence and School-Aged Children’s Unhealthy Food Choice: New Evidence From Rural China
Authors: Li Jiajie , Ma Wanzhen , Yu Tongtong 
Published: December 2021

Abstract
Background

A large number of unhealthy foods with low nutrition content and safety issues exist in the rural food consumption environment of China. Guiding rural children to avoid eating unhealthy foods through family intervention has become much more critical. However, when current rural caregivers are once left behind by their parents and lack of family education in their childhood, how would they affect their children’s unhealthy food choices? The purpose of this study is to highlight the new evidence of current rural caregivers’ influences on children’s unhealthy food choices in China.
Methods

Based on a survey of 5611 pairs of rural school-aged children and their caregivers in seven provinces, the significant effects of caregivers’ types, parenting attitudes, and socio-demographic characteristics on children’s unhealthy food choices were evaluated through an ordered probit model.
Results

This study found that rural parents did not perform positive influence than rural grandparents as conventionally believed. When the caregiver type changing from parents to grandparents, the percentage of children who mildly accept unhealthy foods increased 6.94%, while the percentage of children who moderately and severely accept unhealthy foods decreased 6.48% and 0.46%, respectively. In addition, this study underscored the significance of caregivers’ neglectful parenting attitudes on the impact of children’s unhealthy eating behavior. When caregivers’ parenting attitudes changing from doting attitude to neglectful attitude, the percentage of children who mildly accept unhealthy foods decreased 9.75%, while the percentage of children who moderately and severely accept unhealthy foods increased 8.77% and 0.99%, respectively.
Conclusions

Our study proposes new evidence that the current rural parents’ inherent intention and preference for those unhealthy foods formed in their childhood would be much higher than rural grandparents and might have performed a significantly negative influence on their children. Our findings also have policy implications for health promotion professionals who look for intervention targets of caregivers to improve their health education effectiveness for children. For the health education toward rural caregivers, instead of focusing on the caregiver types, segmenting those rural caregivers with neglectful parenting attitude would be the key step to identify the intervention targets.