bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling on Financial Revenue via Data Mining
Authors: Liu Lijun , Ding Yongmei , Wang Huan 
Published: January 2020

Abstract
As a new first-tier city of core force in the central region, Wuhan plays a vital role in the development of the mid-regional economy of China, which arises our rich interest about the powerful factors for rapid economic improvement. In this paper, we select 12 factors of financial revenue from 2002 to 2018, and try to find out the significant elements through the Adaptive-Lasso algorithm, then predict the future financial revenue by combining with the grey and neural network model. Real example shows the model is efficient to provide a feasible way to predict the financial market in the future.
The impact of economic growth on PM2.5 concentrations in China’s Yangtze River Delta Urban Agglomeration: Analysis based on Spatial Durbin Model
Authors: Zhu Weiwei 
Published: January 2020

Abstract
In the wake of China’s rapid economic development, the contradiction between economic growth and atmospheric environment protection has intensified. Taking Yangtze River Delta Urban Agglomeration (YDUA) as its study area, this paper adopts the prefecture-level data during the period 2003-2016, and employs Spatial Durbin Model to detect spatial autocorrelations of PM2.5 concentrations globally and locally and explore the impact of economic growth on PM2.5 concentrations in YDUA. Results verified the existence of spatial dependence of PM2.5 concentrations in YDUA, and show that there is a N-shaped relationship between the economic growth and PM2.5 concentrations in YDUA. Besides, the economic development in local city would impact the PM2.5 concentrations in neighbouring cities, the influence trend also making up a N-shaped curve. Policy implications are put forward based on these findings.
Circuit Design Method to Improve Cryogenic Buffer Amplifiers Dynamic Parameters on CJFETs
Authors: Nikitina E P , Bugakova A V , Zhuk A A 
Published: January 2020

Abstract
We consider a circuit design method to increase a slew rate increase and transient process setting time decrease in buffer amplifiers (BAs), intended for operation in analog interfaces of physical values sensors and automatic devices at low temperatures. Differentiating transient correction circuits are introduced into the classical circuits of the BAs on complementary field-effect transistors (CJFETs) to improve these dynamic parameters. We investigated two buffer amplifier’s topologies: single-ended and balanced ones. The article shows the practical use of the proposed BA in the output and input stages of the high-speed operational amplifiers.
SiC- and Ti3SiC2-Based Ceramics Synthesis by Spark Plasma Sintering of Preceramic Paper
Authors: Sedanova E P , Kashkarov E B , Lider A M , Abdullina K R , Mingazova Y R , Travitzky N 
Published: January 2020

Abstract
This paper is devoted to proposing a new approach to the synthesis of SiC- and Ti3SiC2-based ceramics by using of preceramic paper as a feedstock. A preceramic paper with SiC and Ti3SiC2 powder fillers were sintered by spark plasma sintering (SPS) method for holding time 10 minutes under pressure 20-100 MPa. The temperature for the sintering of SiC- and Ti3SiC2-filled paper was 2073-2373 K and 1373-1473 K respectively. The influence of sintering parameters on the materials microstructure was analyzed by scanning electron microscopy. It was revealed that with an increase in pressure from 20 to 100 MPa, the microstructure of the materials becomes denser. It agrees with the results of measuring the density of the sintering materials by the hydrostatic weighting. The determination of Young`s modulus by the acoustic method demonstrates that with the increase of the applied pressure during SPS, Young’s modulus of the synthesized SiC- and Ti3SiC2-ceramics increase.
Magnetic Isotopes of 25Mg and 67Zn and Magnetic Fields Influence on Adenosine Triphosphate Content in Escherichia Coli
Authors: Letuta U G 
Published: January 2020

Abstract
Studies on the magnetic isotopes effect of zinc 67Zn and magnesium 25Mg on the adenosine triphosphate (ATP) concentration in living organisms were held in this work on the example of E. coli bacteria. External static magnetic fields 0-100 mT were used to enhance the effect of magnetic isotopes on intracellular processes. Enrichment of microorganisms with magnesium or zinc isotopes during growth changes the ATP concentration in cells depending on the type of isotope – magnetic or non-magnetic. The effect of weak magnetic fields of 0-10 mT stimulates the bacterial cell growth and the intracellular ATP concentration change. The maximum concentration of ATP was achieved by using a magnetic isotope of magnesium 25Mg and exposure of bacteria to the static magnetic fields 70-90 mT. Non-magnetic isotopes of magnesium or zinc and magnetic fields other than the ranges 0-10 and 70-90 mT can be used to decrease the rate of ATP synthesis.
Simulation Biomechanical Modeling of Human Walking
Authors: Avilov A V , Avilova N V , Krivtsov I A 
Published: January 2020

Abstract
The purpose of this paper is simulation parameters of human walking in normal and pathological conditions. Modeling does possible to determine dynamic characteristics of motion and to optimize designs of walking mechanisms, prostheses, orthoses, implants and more. In developing the model of human walking, we used a special case of the Lagrange equation of the second kind. The experiment was conducted by video analysis of real gait of people of different ages and sex. As a result of the simulation the speeds and accelerations of all links of the model, moments in joints, and peak values of moments are determined. Simulation of human walking makes it possible to develop technical specifications for the design of walking mechanisms, prostheses, implants and more.
Investigation of the Interaction of Palladium with Potassium Tetrafluorobromate
Authors: Mamatova A M , Shakimova A M , Merkel K I , Malin A V , Ostvald R V 
Published: January 2020

Abstract
In this investigation, the interaction of metallic palladium with potassium tetrafluorobromate was examined in open system, the reaction products were identified using X-ray phase analysis. A thermogram of the interaction of Pd with KBrF4 was obtained, the temperature range of the reaction (187.9-328°C) and the thermal effect (431.31 J/g) were determined. It was found that the fluorination process is a multi-stage process. The solubility of the obtained K2PdF6 compound in nitric and hydrochloric acids was investigated. The process of extraction of palladium from nitric acid solutions with tributyl phosphate was carried out and the influence of the concentration of palladium and the acidity of the initial solution on the distribution coefficient was investigated.
Hydrodynamic methods for reducing concentration polarization during beer processing by membranes
Authors: Klyuchnikov A I , Ovsyannikov V Yu , Lobacheva N N , Berestovoy A A , Klyuchnikova D V 
Published: January 2020

Abstract
The use of baromembrane processes, in particular, microfiltration, allowed us to form a whole area consisting in the development of beer clarification technologies with qualitatively new properties. The microfiltration process, in comparison with classical pasteurization with the help of immobilized enzymes, with adsorbing agents, has indisputable advantages, because phase transformations are completely absent, low processing temperatures are used, the process can be carried out in several stages, the processing time and energy consumption are reduced, the conditions of microbiological resistance are increased. The decisive role in the course of the microfiltration process is played by the movement mode of the initial solution, physicochemical properties and the geometry of the membrane channel. It is known that the diffusion coefficient can be significantly increased by increasing the temperature of the solution to be separated, which is not always technologically possible, and in some cases, simply unacceptable, therefore, the above parameters are the most promising options for increasing the mass transfer coefficient.
Accounting and analytical support of financial analysis of agricultural enterprises
Authors: Vasileva N O , Astrakhantseva I A , Polyakova I A , Korkina N I 
Published: January 2020

Abstract
The development of analytical tools for financial analysis of the organization at the stage of economical growth is considered in this article. Reorientation of the methodology for financial stability evaluation, in accordance with the functional approach, is most relevant for the processes of distribution and redistribution of in-house financial resources. By the example of the report of the enterprise it is shown that both economically significant information and effective solutions to financial problems, including the tasks of maintaining investment attractiveness, can be obtained only with the appropriate accounting system.
Thermal analysis of carbon fibre reinforced polymer decomposition
Authors: Yatim Norazlina Mohamad , Shamsudin Zurina , Shaaban Azizah , Sani Nurhernida Abdullah , Jumaidin Ridhwan , Shariff Emy Aqila 
Published: January 2020

Abstract
The increasing number of carbon fibers reinforced polymer (CFRP) waste disposed of in landfills is creating environmental concerns due to the potential release of toxic by-products and the need for recycling. This research work investigates the influence of atmosphere (single and combination of nitrogen and oxygen) and heating rate (5 and 10 °C min−1) on the thermal decomposition of CFRP to recover the reclaimed-cf The samples were heated up to 420 °C in a nitrogen atmosphere followed by heating in the oxygen atmosphere from 420 °C until the final heating temperature at different heating rates. The thermal decomposition behavior of the CFRP waste was compared by thermogravimetric analysis (TGA). Morphological, chemical and structural analysis of reclaimed-CF was performed using SEM, FT-IR and Raman spectroscopy respectively. A nitrogen atmosphere was significance at the early temperature (<420 °C) to decompose smaller molecules of epoxy resin components, while oxygen atmosphere is needed to achieve a complete separation of reclaimed-CF from their matrix. Thermal decomposition at lower heating rate (5 °C min−1) was found efficiently to eliminate the complex epoxy resin and retain the structure of reclaimed-cf The particular thermal decomposition technique that leads to a lower final heating temperature (540 °C) is present to recover valuable reclaimed-CF from complex CFRP industrial waste.
Hybrid bio-based composites from blends of epoxy and soybean oil resins reinforced with jute woven fabrics
Authors: Ozkur Semih , Sezgin Hande , Akay Erdem , Yalcin-Enis Ipek 
Published: January 2020

Abstract
In our world, where environmental factors are taken into consideration more and more, the interest in biomaterials leaves its place to the need and this leads the researchers to search for new materials. The aim of this study is to produce an environmentally friendly, sustainable material with the use of a plant oil-based bio-resin (acrylated epoxidized soybean oil). In this context, bio-composites containing different proportions (from 0 to 100 wt%, in 10% increments) of acrylated epoxidized soybean oil (AESO) and epoxy resin are reinforced with four-ply jute woven fabric and produced by the vacuum infusion method. The bio-composites produced within the scope of the study analyzed physically (fiber weight ratio), mechanically (tensile strength, flexural strength, drop-weight impact resistance, and Charpy impact strength), instrumentally (differential scanning calorimetry and Fourier-transform infrared spectroscopy) and morphologically (scanning electron microscopy). According to the results, the tensile and flexural strength values of the composites containing more than 30 wt% AESO resin decrease due to the ductility of the structure; subsequently, composites with AESO content above 50 wt% are found to exhibit superior impact resistance. Composites with pure AESO resin absorb 7 J energy which is almost 3 times higher than pure epoxy composites. The maximum tensile strength (63 MPa) of composites are achieved for 30 wt% AESO content indicating the newly formed hydrogen bonding leading to enhanced fiber-matrix interface. The bio-composites designed and produced in the project have been a promising alternative for various end-use areas, from construction elements to the automotive sector and sports equipment, where human health and environmental elements are considered.
Preparation and characterization of graphene oxide from tea waste and it’s photocatalytic application of TiO2/graphene nanocomposite
Authors: Amir Faiz M S , Che Azurahanim C A , Yazid Y , Suriani A B , Siti Nurul Ain M J 
Published: January 2020

Abstract
In the present study, the conversion of tea waste biomass was carried via carbonization at high temperature and further used as starting material to produce graphene oxide (GO). The oxidation and exfoliation of graphitized carbon was successfully achieved using modified Hummer’s method. The as synthesized GO have been loaded with titanium dioxide (TiO2) using hydrothermal method to produce nanocomposite of rGO/TIO2. The prepared nanocomposites were characterized by means of XRD, FTIR, Raman and FESEM analysis. The evaluation for rGO/TIO2 nanocomposite photocatalytic activity was carried out based on degradation of methyl orange (MO) under the ultraviolet (UV) light irradiation. Results obtained using FTIR results revealed the successful oxidation of graphitized carbon with the presence of carboxyl and hydroxyl group. FESEM images suggested the changes of surface morphology from graphite flakes structure into few layers of graphene sheets. Therefore, it can be indicated that tea waste suitable to be sustainable alternative of graphite for the synthesis of GO. Moreover, GO obtained has immense potential for degradation of various water pollutions. Photocatalytic activity experiment inferred that the importance of optimum ratio between reduce GO to TiO2 materials which can resulted in difference in the degradation efficiency; rGO/TiO2 1:8 > rGO/TiO2 1:4 > TiO2 > rGO/TiO2 1:6 > rGO/TiO2 1:10.
Synthesis and characterization of electro-spun TiO2and TiO2-SnO2composite nano-fibers for application in advance generation solar cells
Authors: Akhlaq Maham , Khan Zuhair S 
Published: January 2020

AbstractDue to rapid progressive research in the field of nano-technology, nanostructures are attaining tremendous deliberation. Precisely, among these, nano-fibers have accumulated unprecedented attention over the last few years owing to their superior properties such as large surface area to volume ratio. For advance generation solar cells, nano-fibers of metal oxides such as TiO2have been widely employed as a working anode but due to the disadvantages of recombination of electrons, their coupling with other metal oxides is necessary to render them useful. This work reports the successful fabrication of TiO2, TiO2/SnO2nano-fibers based film and study of the effect of polymer concentration upon it. The crystal structure of synthesized fibers was investigated using XRD, the morphology and chemical composition was analyzed using SEM and EDX, optical properties and chemical properties were studied using UV-VIS spectrophotometer and FT-IR while the electrical properties were studied using Hall Effect measurement system. It was revealed that the prepared TiO2-SnO2nano-fibers exhibit enhanced conductivity, larger band-gap with enhanced photo voltaic properties than TiO2nano-fibers. The prepared TiO2/SnO2nano-fibers based solar cells provide an improved efficiency of 4.81% as compared to 1.8% efficiency of bare TiO2nano-fibers.
Message in a Bottle: Scenic Presentation of the Unsayable
Authors: Busch Brigitta 
Published: January 2020

AbstractLinguistic studies related to trauma are primarily interested in how traumatic events can be verbalized. This article, in contrast, focusses on ways of translating a traumatic experience into forms of symbolization that do not report on what happened but rather foreground the bodily and emotional sensations linked to (re)living such experiences. In discussing such forms of scenic presentation and condensation, I will build, inter alia, on Wittgenstein’s (1919/1997) distinction between saying and showing as well as on Langer’s (1948) distinction between discursive and presentational forms of meaning making. The close reading of a multimodal text authored by an eight-year-old schoolgirl in the context of a creative-writing activity allows us to identify poetic and artistic means that suggest a reading of the text as a ‘bottled message’ about intense feelings of fear and helplessness. In concluding I argue that Bruner’s (1986) dichotomous distinction between the paradigmatic and the narrative mode of meaning making needs to be extended by recognizing a third mode, which might be termed the presentational mode.
Connecting the dots: avian eggshell pigmentation, female condition and paternal provisioning effort
Authors: Hodges Kara E , Mortimer Nathan T , Vrailas-Mortimer Alysia D , Sakaluk Scott K , Thompson Charles F 
Published: January 2020

AbstractDifferences in avian eggshell pigmentation could be an honest signal of female quality that males use to inform their nestling provisioning effort. We investigated whether among-individual variation in protoporphyrin-based eggshell pigmentation in house wrens (Troglodytes aedon) reflects female fitness-associated traits and whether males use that information. Females laying lighter clutches were older and larger than females laying darker clutches. Nestlings hatching from lighter clutches had greater size-corrected mass on post-hatch day 11, a measure that strongly predicts survival and recruitment to the breeding population. To test whether male provisioning effort responds to clutch pigmentation, we used a reciprocal clutch cross-fostering design, swapping dark with light clutches and light with dark; in controls, we swapped light with light clutches and dark with dark. Shortly before hatching, clutches were returned to their original nest to avoid confounding effects of nestling quality on male provisioning. Contrary to the sexual selection hypothesis, clutch pigmentation had no effect on male provisioning. Males were probably able to observe eggshell pigmentation and thus had information about female quality, but they did not use this information to modulate their nestling provisioning. This may be because of constraints on species-specific reproductive opportunities, or because variation in eggshell protoporphyrin serves other functions.
Cerebrospinal Fluid Early Fungicidal Activity as a Surrogate Endpoint for Cryptococcal Meningitis Survival in Clinical Trials
Authors: Pullen Matthew F , Hullsiek Katherine Huppler , Rhein Joshua , Musubire Abdu K , Tugume Lillian , Nuwagira Edwin , Abassi Mahsa , Ssebambulidde Kenneth , Mpoza Edward , Kiggundu Ruben , Akampurira Andrew , Nabeta Henry W , Schutz Charlotte , Evans Emily E , Rajasingham Radha , Skipper Caleb P , Pastick Katelyn A , Williams Darlisha A , Morawski Bozena M , Bangdiwala Ananta S , Meintjes Graeme , Muzoora Conrad , Meya David B , Boulware David R 
Published: January 2020

Abstract

Background
In cryptococcal meningitis phase 2 clinical trials, early fungicidal activity (EFA) of Cryptococcus clearance from cerebrospinal fluid (CSF) is used as a surrogate endpoint for all-cause mortality. The Food and Drug Administration allows for using surrogate endpoints for accelerated regulatory approval, but EFA as a surrogate endpoint requires further validation. We examined the relationship between rate of CSF Cryptococcus clearance (EFA) and mortality through 18 weeks.

Methods
We pooled individual-level CSF data from 3 sequential cryptococcal meningitis clinical trials conducted during 2010–2017. All 738 subjects received amphotericin + fluconazole induction therapy and had serial quantitative CSF cultures. The log10-transformed colony-forming units (CFUs) per mL CSF were analyzed by general linear regression versus day of culture over the first 10 days.

Results
Mortality through 18 weeks was 37% for EFA &gt; = 0.60 (n = 170), 36% for 0.40–0.59 (n = 182), 39% for 0.30–0.39 (n = 112), 35% for 0.20–0.29 (n = 87), and 50% for those with EFA &lt; 0.20 CFU/mL/day (n = 187). The hazard ratio for 18-week mortality, comparing those with EFA &lt; 0.20 to those with EFA &gt; = 0.20, was 1.60 (95% confidence interval, 1.25, 2.04; P = .002). The lowest EFA group had lower median CD4 T-cell counts (P &lt; .01) and lower proportion of patients with CSF pleocytosis (P &lt; .001).

Conclusions
EFA is associated with all-cause mortality in cryptococcal meningitis. An EFA threshold of &gt; = 0.20 log10 CFU/mL/day was associated with similar 18-week mortality (37%) compared to 50% mortality with EFA &lt; 0.20. This EFA threshold may be considered a target for a surrogate endpoint. This builds upon existing studies to validate EFA as a surrogate endpoint.
Evaluation of Phylogenetic Methods for Inferring the Direction of Human Immunodeficiency Virus (HIV) Transmission: HIV Prevention Trials Network (HPTN) 052
Authors: Zhang Yinfeng , Wymant Chris , Laeyendecker Oliver , Grabowski M Kathryn , Hall Matthew , Hudelson Sarah , Piwowar-Manning Estelle , McCauley Marybeth , Gamble Theresa , Hosseinipour Mina C , Kumarasamy Nagalingeswaran , Hakim James G , Kumwenda Johnstone , Mills Lisa A , Santos Breno R , Grinsztejn Beatriz , Pilotto Jose H , Chariyalertsak Suwat , Makhema Joseph , Chen Ying Q , Cohen Myron S , Fraser Christophe , Eshleman Susan H 
Published: January 2020

Abstract

Background
Phylogenetic analysis can be used to assess human immunodeficiency virus (HIV) transmission in populations. We inferred the direction of HIV transmission using whole-genome HIV sequences from couples with known linked infection and known transmission direction.

Methods
Complete next-generation sequencing (NGS) data were obtained for 105 unique index–partner sample pairs from 32 couples enrolled in the HIV Prevention Trials Network (HPTN) 052 study (up to 2 samples/person). Index samples were obtained up to 5.5 years before partner infection; partner samples were obtained near the time of seroconversion. The bioinformatics method, phyloscanner, was used to infer transmission direction. Analyses were performed using samples from individual sample pairs, samples from all couples (1 sample/person; group analysis), and all available samples (multisample group analysis). Analysis was also performed using NGS data from defined regions of the HIV genome (gag, pol, env).

Results
Using whole-genome NGS data, transmission direction was inferred correctly (index to partner) for 98 of 105 (93.3%) of the individual sample pairs, 99 of 105 (94.3%) sample pairs using group analysis, and 31 of the 32 couples (96.9%) using multisample group analysis. There were no cases where the incorrect transmission direction (partner to index) was inferred. The accuracy of the method was higher with greater time between index and partner sample collection. Pol region sequences performed better than env or gag sequences for inferring transmission direction.

Conclusions
We demonstrate the potential of a phylogenetic method to infer the direction of HIV transmission between 2 individuals using whole-genome and pol NGS data.