bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization and Comparison of Two Technologies for the Manufacture of Blades for Flow path HPC Turbine K-330-23.5
Authors: Usatyi Oleksandr , Avdieieva Olena , Palkov Ihor , Palkov Sergii , Ishchenko Oleh 
Published: November 2021

The article presents the results of multiparameter optimization of the structural and thermogasdynamic parameters of the flow path of the HPC K-330-23.5, obtained using the developed CAD “Turboagregat”. The found 12 optimal solutions for the flow path of the HPCK-330-23.5 make it possible not only to assess the effect of the design parameters and the number of blades of the HPC stages on the HPC efficiency, but also to carry out a comparative analysis of two technological approaches to manufacturing the rotor blades – with and without trimming the initial edges. Calculations have confirmed the negative effect of increasing the radius of the “tummy” circle on the nature of the flow and on the efficiency of the cascades. In cascades with increased profiles by 9.83 % with a radius of the “tummy” circle, the coefficient of profile losses of the cascade increased by 0.07 % (absolute) in comparison with the original cascade from the original 1MMK-U profiles.
Determination of Average Reservoir Pressure from Pressure Buildup Tests
Authors: Kazemi Hossein 
Published: November 2021

Abstract
Two simple and equivalent procedures are suggested for improving the calculated average reservoir pressure from pressure buildup tests of liquid or gas wells in developed reservoirs. These procedures are particularly useful in gas well test analysis irrespective of gas composition, in reservoirs with pressure-dependent permeability and porosity, and in oil reservoirs where substantial gas saturation has been developed. Long-term production history need not be known.

Introduction
For analyzing pressure buildup data with constant flowrate before shut in, two plotting procedures are mostly used: The Miller-Dyes-Hutchinson (MDH) plot (1,8) and the Horner plot (2,8). The Miller-Dyes-Hutchinson plot is a plot of pws vs log Δt. The Horner plot consists of plotting the bottom hole shut-in pressure, pws vs log [(tp + Δt)/Δt]. Δt is the shut-in time and tp is a pseudo-production time equal to the ratio of total produced fluid and the last stabilized flowrate prior to shut in. This method was first used by Theis (3) in the water industry.
Vitamin D and the risk of latent tuberculosis infection: a meta-analysis
Authors: Cao Yan , Wang Xinjing , Liu Ping , Su Yue , Yu Haotian , Du Jingli 
Published: November 2021

Abstract
Objective

Latent tuberculosis infection (LTBI) may be a risk of developing tuberculosis (TB) and thus a health hazard. The aim of this meta-analysis is to explore the association between vitamin D and LTBI.
Methods

Databases including PubMed, Embase, Scopus, and ProQuest were electronically searched to identify observational or interventional studies that reported the association between vitamin D and LTBI. The retrieval time is limited from inception to September 2021. Two reviewers independently screened literature, extracted data, and assessed risk bias of included studies. Meta-analysis was performed by using STATA 12.0 software.
Results

A total of 5 studies involving 2 case-control studies and 3 cohort studies were included. The meta-analysis result showed that the serum level of vitamin D was associated with the risk of LTBI (OR=0.32, 95%CI: 0.12-0.85, P=0.022). The result from cohort studies suggested that relatively high vitamin D level was a protective factor for LTBI (RR=0.67, 95%CI: 0.48-0.92, P=0.015).
Conclusions

Our meta-analysis suggested that serum vitamin D levels were associated with LTBI, and relatively high serum vitamin D level was a protective factor for LTBI. Further RCTs are needed to verify whether vitamin D supplementation prevents LTBI.
Aiming for the Optimum: Examining Complex Relationships Between Sampling Regime, Sampling Density and Landscape Complexity to Accurately Model Resource Availability
Authors: Parsons Ira L. , Boudreau Melanie R. , Karisch Brandi B. , Stone Amanda E. , Norman Durham , Webb Stephen L. , Evans Kristine O. , Street Garrett M. 
Published: November 2021

Abstract
Context Obtaining accurate maps of landscape features often requires intensive spatial sampling and interpolation. The data required to generate reliable interpolated maps varies with spatial scale and landscape heterogeneity. However, there has been no rigorous examination of sampling density relative to landscape characteristics and interpolation methods.ObjectivesOur objective was to characterize the 3-way relationship among sampling density, interpolation method, and landscape heterogeneity on interpolation accuracy in simulated and in situ landscapes. MethodsWe simulated landscapes of variable heterogeneity and sampled at increasing densities using both systematic and random strategies. We applied each of three local interpolation methods: Inverse Distance Weighting, Universal Kriging, and Nearest Neighbor — to the sampled data and estimated accuracy (R2) between interpolated surfaces and the original surface. Finally, we applied these analyses to in situ data, using a normalized difference vegetation index raster collected from pasture with various resolutions.Results All interpolation methods and sampling strategies resulted in similar accuracy; however, low heterogeneity yielded the highest R2 values at high sampling densities. In situ results showed that Universal Kriging performed best with systematic sampling, and inverse distance weighting with random sampling. Heterogeneity decreased with resolution, which increased accuracy of all interpolation methods. Landscape heterogeneity had the greatest effect on accuracy.ConclusionsHeterogeneity of the original landscape is the most significant factor in determining the accuracy of interpolated maps. There is a need to create structured tools to aid in determining sampling design most appropriate for interpolation methods across landscapes of various heterogeneity.
Clinical Report of Six-Month Follow-Up After Cementing PEEK Crown On Molars
Authors: Kimura Hitomi , Morita Koji , Nishio Fumiko , Abekura Hiroshi , Tsuga Kazuhiro 
Published: November 2021

Abstract
To investigate the therapeutic effect of polyetheretherketone (PEEK) crowns, a six-month clinical study on CAD/CAM-fabricated molar PEEK crowns was conducted. Twenty-three cases of PEEK crowns placed on the molars of 20 subjects (7 males and 13 females, mean age: 60.6 ± 14.4 years) were included in the study. The evaluation items were the condition of the crowns at the time of cementation and after six months, patient satisfaction, masticatory ability, and occlusal force. A Wilcoxon signed-rank test with a significance level of 5% was used to examine the difference in masticatory ability with and without PEEK crowns. The occlusion, margin fit, and contact of all 23 cases at the time of cementing was good. Six months after cementation, there was no crown desorption, no fracture or crack, and no prosthodontics was needed in the 22 cases where one patient dropped out. No wear of the dental antagonist was observed. Patient satisfaction was generally high. There was no significant difference in masticatory ability between the groups with and without PEEK crowns. The subject's occlusal force was within normal range. PEEK crowns on molars are highly therapeutic methods and can be fully used as a crown prosthetic material to replace metal.
Composition Dependence of Electronic, Elastic, and Polarization Properties of Wurtzite InxGa1-xN and CdxZn1-xO Ternary Alloys
Authors: BENBEDRA Abdesamed , MESKINE Said , ABBASSA Hamza , ABBES El Habib , BOUKORTT Abdelkader 
Published: November 2021

Abstract
We report the results of density functional theory calculations of several properties of wurtzite-structured InGaN and CdZnO alloys. It is shown that the investigated properties, including the internal parameter, bandgap, mechanical moduli, and electric polarization are nonlinear functions of alloy composition, as they deviate from the linear behavior predicted by Vegard’s law. Based on these results, InGaN and CdZnO are materials whose properties can be tuned via In and Cd concentrations. The spontaneous and piezoelectric polarizations considerably affect the properties of alloys-based devices due to the huge electric fields that build up at the heteroineterfaces. In this work we propose a method of controlling such fields by employing the composition dependence of the total polarization. We support this proposal by showing that, in the case of InGaN, an optimal alloy composition can be found that effectively reduces the polarization-induced electric fields, thereby improving the efficiency of optoelectronic applications.
Extra &amp; Intravascular Ultrasound (E&amp;IVUS) Guided Intervention for Femoropopliteal Arterial Occlusive Lesions.
Authors: Haraguchi Takuya , Sawada Nozomi , Tsujimoto Masanaga , Furuya Masato , Itai Saori , Takeuchi Tsuyoshi , Kashima Yoshifumi , Sato Katsuhiko , Fujita Tsutomu 
Published: November 2021

Abstract
Background: Intravascular ultrasound (IVUS) shows vascular structures and positions of interventional devices in cross sectional-short axis to support interventions, especially for complex lesions. On the other hand, extravascular ultrasound (EVUS) visualizes the devices and vessel structures in long and short axis and reduces the radiation exposure by avoiding the use of fluoroscopy during guidewire manipulation. The images obtained from EVUS handling to guide the guidewire manipulation in both long and short axis is more difficult, time consuming, and stressful than IVUS, which is in short axis only. To solve this issue, we propose a novel guidewire crossing method in conjunctive with the use of both modalities, named “extra and intravascular ultrasound (E&IVUS)” guided intervention.Main text: This is the first report of a combined use of EVUS and IVUS for femoropopliteal occlusions. EVUS-guided intervention is mandatory to check the position of the device in long and short axis. However, the images of long axis are sometimes different from the original ones when EVUS is required to image from the short axis to the long axis. E&IVUS allows to dedicate EVUS to acquisition of the long axis and IVUS to the short axis view when confirming the device position. As a result, E&IVUS shortens the operation time and reduces the stress due to the manipulation of the probe to switch from the long to short axis image and vice versa. Moreover, we can accurately manipulate the guidewire to perform intimal tracking according to the information of EVUS long axis and the IVUS short axis images. Case involved a 76-year-old female with right superficial femoral artery occlusion was angiographically contrasted from a contralateral 6-Fr sheath. A hard wire supported with an over-the-wire typed IVUS was advanced into the CTO with EVUS and IVUS to confirm their positions until the guidewire crossing. We repeatedly performed this process, and all intimal tracking succeeded. The drug-coating balloons appropriately sized by IVUS measurement were deployed. Finally, a sufficient blood flow was achieved without complications.Conclusions: E&IVUS is a preferred strategy than using EVUS or IVUS alone. We should evaluate the clinical outcomes of this technique.
Transcranial Sonography with Clinical and Demographic Characteristics to Predict Cognitive Impairment in PD: A Longitudinal Study
Authors: Chen Zhiguang , Zhang Wei , He Wen , Guang Yang , Yu Tengfei , Du Yue , Li Rui 
Published: November 2021

Abstract
Background
Parkinson’s disease (PD) is a neurodegenerative disease second only to Alzheimer’s disease and is clinically characterized by a series of motor and non-motor symptoms. The latter often appear before motor symptoms, while cognitive impairment mostly occurs within a few years after the diagnosis of PD. We Aimed to predict the risk factors of cognitive impairment in PD patients based on transcranial sonography, clinical symptoms, and demographic characteristics. Independent-sample t-test was used for continuous data, and chi-square test was used for countable data. According to the occurrence time of cognitive impairment (CI), 172 PD patients were divided into non-CI (N-CI, n=48), CI at the first treatment (F-CI, n=58), and CI at the last treatment (L-CI, n=66). The age of onset, first treatment and smoking history of CI patients were significantly different from those with N-CI. When age of first treatment ≥61 years was considered the boundary value to diagnose CI, the sensitivity and specificity were 77.40% and 66.70%, respectively. At the first treatment, there was significant difference in depression between F-CI and N-CI. At the last treatment, the cumulative and new or aggravated hypomnesia of L-CI was significantly more than that of N-CI. There was significant difference in TCS grading between the first- and last treatment in L-CI. Depression, sexual dysfunction, and olfactory dysfunction were independent risk factors for CI during the last treatment, while memory impairment was an independent risk factor for CI during the entire treatment. The sensitivity and specificity of predicting CI in PD patients were 81.80% and 64.60%, respectively. The older the age of onset and treatment of PD patients, the more likely they were to have CI. Hypomnesia, depression, sexual dysfunction, and olfactory dysfunction can be used as independent risk factors to predict CI in PD patients.
Nursing Students' Self-regulated Learning Skills for Online Learning
Authors: Tower Marion , Hyun Areum , Watson Bernadette , Bourke Alison , Drayton John , Osborne Debora 
Published: November 2021

Abstract
BackgroundUniversities have been working to adopt more flexible approaches to teaching and learning. New approaches have been accelerated by the coronavirus pandemic whereby university nursing programs have moved more learning into online environments to continue delivering education and supporting nursing students to progress in their study. However, there is significant evidence to suggest that many students remain comfortable with traditional methods of learning. Nursing students in particular prefer to learn by experience and reflection. An important attribute for online learning is related to students' self-regulated learning (SRL) skills. The aim of the study was to explore nursing students' SRL readiness for online learning environments. MethodsA convenience sample of one hundred and fifty undergraduate nursing students who were enrolled in the first year of nursing program participated in an online survey. The survey instrument was a Self-Directed Learning Instrument which had previously been used to measure the students' readiness for self-regulated learning.ResultsResults indicated that students were motivated to improve in their learning and enjoyed finding answers to questions. They also agreed that they continued learning even when they faced difficulties. In contrast, they often did not know what they had to learn; they struggled to manage their learning time, find learning resources, monitor their progress, and self-evaluate their learning outcomes. ConclusionsProviding opportunities to develop nursing students' metacognition is important. Activities such as goal setting and planning, developing time management and assessment strategies, and making explicit support channels for online learning, as well as providing opportunities for self-reflection and self-evaluation strategies to enhance SRL can support this.
Novel ratiometric fluorescent probe based on internal reference and its detection of hydrazine
Authors: Cheng Xiaohong , Li Shuang , Gong Mengyun , Wang Song , Li Wangnan 
Published: November 2021

Abstract
In this work, dual-emissive ratiometric fluorescent system was constructed by the introduction of an ideal internal reference. By virtue of its unique alkalinity, N 2 H 4 could undergo a hydrazinolysis reaction with the ester group of F1 , inducing remarkable fluorescence enhancement while the blue fluorescence of the internal reference DPA remained constant. Consequently, the fluorescence intensity ratios (I 540 /I 440 ) were proportional to the concentrations of N 2 H 4 , which was beneficial for the exactly quantitative detection. The skillful strategy granted the sensing system advantages such as relative good solubility in aqueous media, easy-to-design, simple synthesis, large emission shift, good ratiometric response, as well as the successful application in real water samples and cell imaging.
Suppression of Banana Fusarium Wilt Disease With Soil Microbial Mechanisms Via Pineapple Rotation and Residue Amendment
Authors: Yang Jinming , Shen Zongzhuan , Ren Xiangyu , Gao Wei , Wang Yutong , Liu Manyi , Hong Shan , Sun Mingze , Zhao Yan , Ruan Yunze , Wang Beibei 
Published: November 2021

Abstract
Aims The large outbreak of banana Fusarium wilt has become a bottleneck limiting the industry’s development, and crop rotation is a cost-effective and essential measure to overcome the obstacles of banana crop monoculture. The present work was carried out to explore the mechanisms of how changes in physicochemical properties and the reestablishment of soil microorganisms in high-incidence soils are affected by crop rotation and plant residue. Methods In this study, pineapple-banana crop rotation and pineapple residue amendment were used to alleviate banana Fusarium wilt, and their effects on bacterial and fungal communities were studied using the MiSeq Illumina sequencing platform. Results Both pineapple-banana rotation and residue addition significantly reduced disease incidence. Moreover, pineapple rotation and residue amendment altered the bacterial and fungal community composition. The taxonomic and phylogenetic alpha diversity of bacteria and fungi significantly increased against disease suppression and nutrition competition. The relative abundances of the Burkholderia, Pseudomonas, Elaphocordyceps, Penicillium, and Talaromyces genera were higher, and the number of Fusarium was significantly lower in rotational soil than in banana monoculture soil. Finally, linear models (LM) was used to show that the Burkholderia and Talaromyces in crop rotation, and Aspergillus in residue amendment have significant negative relationship to disease incidence, which plays a key role in Fusarium reduction. Conclusions To consider the economic benefits and protect the vitality of the soil, this study suggested that pineapple-banana rotation and pineapple residue amendment both could be considered for the sustainable management of banana wilt.
Matrine Reverses Multidrug Resistance in Eca-109/VCR Cells Via Inhibiting PI3K/Akt/mTOR Signaling Pathway
Authors: Liu Bo , Lin Shuxuan , Li Xiujuan , Liu Fengxi , Liu Junchao , Wang Na , Lv Yang 
Published: November 2021

Abstract
Objective To investigate the effect of matrine on multidrug resistance of Eca-100/VCR cells. Methods Methyl thiazolyl tetrazolium assay was used to assess the cytotoxic activity of matrine to Eca-109/VCR cells and the sensitivity of cells to Vincristine (VCR). Then Eca-109/VCR cells were divided into four groups: control group, matrine group, VCR group and matrine combined with VCR group. Immunofluorescence staining was used to detect P-gp protein expression. Western blot was used to detect MRP1, P-gp, Beclin 1, p62(SQSTM1), LC3, p-mTOR, p-Akt and p-p70S6K protein expression. MDR1 mRNA expression was detected by RT-qPCR. Transmission electron microscopy was used to detect the ultra structural changes. Results Matrine could reverse the resistance of Eca-109/VCR cells to VCR with a reversal index of 3.52. Compared with the other groups, the expression of LC3-II, Beclin 1 increased while P-gp, MRP1, p62(SQSTM1), p-mTOR, p-Akt and p-p70S6K significantly decreased in matrine+VCR group (P<0.05). The expression of MDR1 mRNA decreased in Eca-109/VCR cells treated with matrine, VCR or their combination. The number of autophagic vacuoles in Eca-109/VCR cells increased after matrine treatment. Conclusion Matrine has anticancer and anti multidrug resistance functions in Eca-100/VCR cells, and it may be produced by promoting autophagy which mediated through PI3K/Akt/mTOR signaling pathway.
Formation Control of Satellites in Low Earth Orbit by Using Moving Masses
Authors: Li Jianqing , Wen Shameng , Zhong Hua 
Published: November 2021

Abstract
This paper investigates a formation control technique based on the use of moving masses. First, the mechanism of the moving mass control is conducted to reveal the relation between the attitude and the offsets of moving masses. Then, to achieve the desired formation control, the aerodynamic force generated by the change of attitudes is used as the control input to implement the orbit control. The moving masses and magnetic torquers constitute a combined actuator to drive the satellite attitude. To deal with the offset saturation of moving masses, an adaptive controller is investigated. Finally, a simulation on two satellites formation is provided, demonstrating the feasibility of the proposed method.
Comprehensive Genome-Wide Analysis of The Catalase Enzyme Toolbox In Potato (Solanum Tuberosum L.)
Authors: Koubaa Rania Jbir , Ayadi Mariem , Saidi Mohamed Najib , Charfeddine Safa , Bouzid Radhia Gargouri , Nouri-Ellouz Oumèma 
Published: November 2021

Abstract
As antioxidant enzymes, catalase (CAT) protects organisms from oxidative stress via the production of reactive oxygen species (ROS). These enzymes play important roles in diverse biological processes. However, little is known about the CAT genes in potato plants despite its important economical rank of this crop in the world. Yet, abiotic and biotic stresses severely hinder growth and development of the plants which affects the production and quality of the crop. To define the possible roles of CAT genes under various stresses, a genome-wide analysis of CAT gene family has been performed in potato plant.In this study, the StCAT gene’s structure, secondary and 3D protein structure, physicochemical properties, synteny analysis, phylogenetic tree and also expression profiling under various developmental and environmental cues were predicted using bioinformatics tools. The expression analysis by RT-PCR was performed using commercial potato cultivar. Three genes encoding StCAT that code for three proteins each of size 492 aa, interrupted by seven introns have been identified in potatoes. StCAT proteins were found to be localized in the peroxisome which is judged as the main H2O2 cell production site during different processes. Many regulating cis-elements related to stress responses and plant hormones signaling were found in the promoter sequence of each gene. The analysis of motifs and phylogenetic trees showed that StCAT are closer to their homologous in S. lycopersicum and share a 41% – 95% identity with other plants’ CATs. Expression profiling revealed that StCAT1 is the constitutively expressive member; while StCAT2 and StCAT3 are the stress-responsive members.