bluuebunny/crossref_metadata_2025_split huggingface dataset:
Zur sozialen Logik der Tugendprobe
Authors: Mohr Jan 
Published: November 2021

Abstract
In a broad overview, this article examines the virtue test scenarios (›Tugendproben‹) in Arthurian romances and short narratives of the 13th and 14th centuries as well as in late medieval chivalric romance and Shrovetide plays. While literary research has mainly focused on didactic and comic moments of only two texts so far, the article aims at an underlying social structure formed by public control, rank representation, and concern for the cohesion of Arthurian society. This constellation, I argue, reflects the problem of reconciling two contradictory principles of courtly socialization: agonal competition and an assertion of virtual equality.
A new spin on electrochemistry in the undergraduate lab
Authors: Fruehwald Holly M. , Zenkina Olena V. , Easton E. Bradley 
Published: November 2021

Abstract
The growing interest in electrochemistry over recent years has sparked an increase in the popularity of various electrochemical techniques, including more advanced methods, that have previously been overlooked in academia and industry. This makes comprehensive hands-on experience in electrochemistry a highly demanded addition to chemistry graduates. However, many students do not receive sufficient training in the theory and experimental design to confidently use and apply various electrochemical techniques throughout their undergraduate, and sometimes even in graduate studies. Here we summarize the theory and practical applications for both rotating disk electrode (RDE) and rotating ring disk electrode (RRDE) techniques. The different modes of operation of rotating ring disk voltammetry, methodologies of data analysis and interpretation as well as the scope of the information that can be extracted from the RDE/RRDE are discussed. Proposed modifications of the laboratory curriculum will allow students to examine and learn valuable information about the reactions on the surface of the electrode/liquid interface. This information will allow chemists to confidently use RDE and RRDE techniques for a wide range of research and development targets. Furthermore, incorporating these techniques into existing chemistry laboratories will help chemistry educators to enrich the undergraduate chemistry curriculum and improve students’ learning outcomes.
The crystallization and mechanical properties of poly(4-methyl-1-pentene) hard elastic film with different melt draw ratios
Authors: Yin Liangdong , Xu Ruijie , Xie Jiayi , Lei Caihong , Cai Qi 
Published: November 2021

Abstract
To study the effect of the melt-draw ratios (MDRs) on the structure and properties of the poly(4-methyl-1-pentene) (PMP) film, the crystal structure evolution and mechanical properties of the PMP film with an MDR of 40–160 were characterized using scanning electron microscopy, differential scanning calorimetry, wide-angle X-ray scattering, and mechanical test. The results show that with the increase of MDR, the spherulite to platelet transition occurs in the PMP. When the MDR exceeds 100, a parallel platelet structure appears. Due to the side chains, with the increase of MDR, the distribution density of tie chains in PMP decreases and the entanglement density of amorphous chains increases. This leads to a decrease in the yield strength and the strain hardening becomes noticeable. Although the crystalline network becomes loose due to the decrease in tie chain density, the elastic recovery (ER) value still increases with the increase of MDR. This result indicates that the entanglement density of the amorphous region greatly contributes to the ER.
The effect of isothermal crystallization on mechanical properties of poly(ethylene 2,5-furandicarboxylate)
Authors: Zhang Wei , Wang Qingyin , Wang Gongying , Liu Shaoying 
Published: November 2021

Abstract
The effects of isothermal crystallization temperature/time on mechanical properties of bio-based polyester poly(ethylene 2,5-furandicarboxylate) (PEF) were investigated. The intrinsic viscosity, crystallization properties, thermal properties, and microstructure of PEF were characterized using ubbelohde viscometer, X-ray diffraction, polarizing optical microscope, differential scanning calorimetry, and scanning electron microscopy. The PEF sample isothermal crystallized at various temperatures for various times was denoted as PEF-T-t. The results showed that the isothermal crystallization temperature affected the mechanical properties of PEF-T-30 by simultaneously affecting its crystallization properties and intrinsic viscosity. The isothermal crystallization time only affected the crystallization properties of PEF-110-t. The crystallinity of PEF-110-40 was 17.1%. With small crystal size, poor regularity, and α′-crystal, PEF-110-40 can absorb the energy generated in the tensile process to the maximum extent. Therefore, the best mechanical properties can be obtained for PEF-110-40 with the tensile strength of 43.55 MPa, the tensile modulus of 1,296 MPa, and the elongation at a break of 13.36%.
Extraction and modification of hemicellulose from lignocellulosic biomass: A review
Authors: Lu Yuchan , He Qiao , Fan Guozhi , Cheng Qunpeng , Song Guangsen 
Published: November 2021

AbstractHemicellulose is a carbohydrate biopolymer second only to cellulose, which is rich and has a broad application prospect. The limitation of high-value utilization of hemicellulose has been a long-standing challenge due to its complex and diversified structure. The extraction and subsequent modification of hemicellulose from lignocellulosic biomass represent a promising pathway toward this goal. Herein, the extraction processes including physical pretreatment, chemical pretreatment, and combined pretreatment for separating hemicellulose from lignocellulosic biomass were introduced, and the advantages and disadvantages of various extraction procedures were also described. The chemical modification of hemicellulose such as etherification, esterification, grafting, and cross-linking modification was reviewed in detail. The separation and modification of hemicellulose in the future are prospected based on the earlier studies.
The anticancer and free radical scavenging potential of the Unani medicine Agaricus albus L.
Authors: Mannan Mohd Nazir , Zakir Mohammad , Ahmad Tasleem , Lahari Kuna , Kazmi Munawwar Husain 
Published: November 2021

Abstract

Objectives
Traditional Unani medicine plays a major role in maintaining health in developing countries. For ages, Unani physicians have described many Classical Unani Formulations (CUF) for their anti-cancerous action (Dāfiʻ-i-saraṭān) in the human population. These formulations contain various individual drugs which also have anticancer activity. The present study was designed to screen and compare cytotoxic and antioxidant properties of different extracts of Agaricus albus L. (A. albus), a drug used in the Unani system of medicine on human breast cancer cell lines (MCF-7).

Methods
Cytotoxic effect was assessed using MTT assay kit and free radical scavenging activity was done by using DPPH assay. Aqueous, hydro-ethanol and methanolic extracts were used at different concentrations.

Results
All extracts were shown good antioxidant and cytotoxic activity. Among all extracts, maximum cytotoxic effect was observed in methanolic extract and aqueous extract at the concentration of 1,000 μg against MCF-7 cell line in comparison to paclitaxel. The maximum antioxidant activity was observed in the hydroethanolic extract at the concentration of 1,000 μg against the MCF-7 cell line in comparison to ascorbic acid.

Conclusions
The present study advocates, the anticancer and antioxidant property of A. albus and suggests that this drug may be used as a potential drug for cancer treatment after a successful and detailed preclinical study and clinical trial.
Microwave-assisted preparation of polyphosphoric acid in a continuous-flow reactor
Authors: Ye Jinghua , Zhang Chun , Gao Taotao , Zhu Huacheng 
Published: November 2021

Abstract
Polyphosphoric acid (PPA) is widely used in inorganic salt production, petrochemical industry, electronic material preparation and other manufacturing industries. Conventional preparation methods of PPA has disadvantages of pollution, high energy consumption and long production time. To address this problem, microwave continuous-flow preparation may be a desirable way due to its advantages of environmentally-friendly, rapidity and high efficiency. Therefore, to explore the process of preparing PPA by microwave continuous-flow method, a continuous-flow microwave reactor was designed for the dehydration process of orthophosphoric acid to prepare PPA in this paper. The microwave-assisted dehydration process was studied in comparison with the conventional dehydration process and the “closed” microwave-assisted dehydration process in terms of energy efficiency, process times and treatment capacity. The effect of input microwave power, reduced pressure and inlet flow velocity of orthophosphoric acid on the performance of the dehydration process was studied. The results showed that the influence of the microwave power on the temperature rise process during dehydration is greater than that of the reduced pressure. Moreover, the inlet flow rate has a great impact on the treatment capacity and product quality of the dehydration process. Bedsides, the comparison with the other two methods showed that microwave heating can effectively shorten the dehydration time, and the continuous-flow treatment can effectively improve the treatment capacity of microwave heating. The perspectives of the process scale-up by continuous-flow microwave heating method is also discussed.
Analysis of fluid retention zones in heat exchangers with segmental baffle and helical baffle
Authors: Gu Xin , Li Ning , Chen Cheng , Zhang Qianxin , Wang Guan , Wang Yongqing 
Published: November 2021

Abstract
By using the residence time distribution method (RTD), the fluid retention zones in the shell and tube heat exchanger with segmental baffle (STHX-SB) and the heat exchanger with helical baffle (STHX-HB) are compared and discussed. The flow pattern and fluid retention zone of the similar double helical flow heat exchanger (STHX-SDH) were analyzed by using the same method. The result shows the spiral flow can reduce the fluid retention zone. The flow pattern in the STHX-SDH likes a double helical shape and leads to a very small fluid retention zone. According to the simulation results, the location of the fluid retention zone of STHX-SDH is determined. The verification line method and the zone assessment method were adopted, to discuss the flow velocity of each point on the verification line and the average flow velocities of the selected zones. The change laws of the flow velocities on the verification lines and the average flow velocities of the selected zones at different Reynolds numbers were compared. The result reveals the distribution of the fluid retention zone of the STHX-SDH and the sensitivity of each fluid retention zone to the Reynolds number. By optimization of the angle of the baffle, the volume fraction of the fluid retention zone is reduced to 1.61%, and the heat transfer performance is improved by 13.23%. It is verified that reducing the fluid retention zone can effectively enhance the heat transfer performance. This research method provides a theoretical basis for reducing the fluid retention zone of the heat exchanger and enhancing heat transfer performance.
Exploring the U.S. institutional discourse about critical information infrastructure protection (CIIP): a corpus-based analysis
Authors: Cheng Le , Liu Yuxin , Zhao Yun 
Published: November 2021

AbstractThis study uses a combinative method of quantitative and qualitative discourse analysis applying the discourse-historical approach (DHA), based on a self-built special corpus composed of the U.S. laws, policies and strategy documents that are directly related to critical information infrastructure protection (CIIP); through a Word List ranked by frequency, it is found that there seems to be a coherent securitizing system which has been formed in the U.S. CIIP legislative practices, with some specific considerations in the CIIP policy-making process including the strategy for risk management. By further investigating the internal institutional relationships and institutional mechanisms with corpus tools, four discursive features and strategies of the U.S. CIIP institutional discourse can be discovered: the leading role of private and specific institutions in public-private cooperation; the coexisting characteristics of generality and precision in the process of object definition; the center-divergent institutional settings in executing CIIP execution; and the coordinating discourse patterns for CIIP within the U.S. legislation. Those discursive practices concerning different institutional actors can be further explained in the broader context of the U.S. social reality. This study is not only helpful in better understanding the legal practices in U.S. cybersecurity, but also provides some meaningful insights on CIIP legislation to policy makers in other countries as well as at the international level.
3D structure of single and multiple vortices in a flow under rotation
Authors: Castaño Damián , Navarro María Cruz , Herrero Henar 
Published: November 2021

Abstract
In this paper, we analyze the 3D structure of vortices developed in a rotating cylinder nonhomogeneously heated from below, when the rotation rate is increased. The analysis has been done by using nonlinear simulations. For a fixed Rayleigh number, the rotation rate is the bifurcation parameter. At low rotation rates, one single vortex is developed. When the rotation on the system is increased, another coexistent vortex appears at mid-levels in the cell. If the rotation is high enough, multiple-vortex structures with three or four vortices are developed at different heights. For larger rotation, complex multiple vortices appear with a chaotic behavior. A force balance analysis permits to study the role of the forces being determinant.
The Current Problems of Aesthetic Creation in Chinese Film Art
Authors: Zhou Xing 
Published: November 2021

Abstract
Current market-led Chinese film production has made huge achievements. Market indicators certainly have their validity. However, the power of the market has been exaggerated so that it controls everything. Because of the disregard of film as an aesthetic object, the content, form and aesthetic sensibility of films have been neglected, preventing creation at a higher level. The loss of multiple cultural identities due to market factors and artistic indifference is hardly sustainable in the long run. In recent years, Chinese films have gradually improved their artistic aesthetics. How to reasonably coordinate the market and the realization of the value of art and culture itself is an urgent problem to be solved. Firstly, Chinese films should have creative imagination; secondly, Chinese films should have the artistic expression of the national core value of heroism; thirdly, Chinese films should have meticulous depictions of people. Under the perspective of aesthetic appreciation, it is a top priority for Chinese films to be more in line with reality and traditional aesthetic culture, and be more characterized in their creation.
All-optical frequency-encoded Toffoli gate
Authors: Srivastava Saumya , Chaurasiya Upendra , Tiwari Pradeep , Misal Ashish , Upadhyay Kamal Kishor 
Published: November 2021

Abstract
The construction of an all-optical frequency-encoded Toffoli gate employing a reflecting semiconductor optical amplifier (RSOA) is proposed in this article. By establishing fields such as quantum computing, optical quantum computing, quantum-dot cellular automata, and superconducting flux logic family, quantum gates have been proved to perform reliably in the present day. A nonzero-mass electron, on the other hand, moves far slower than a quantum particle with zero rest mass, such as a photon. Photons can also be utilized to store data while being sent. These photon qualities have motivated researchers to create quantum gates in the all-optical domain based on them. The RSOA-based implementation of the Toffoli gate gives a significant improvement in the case of high speed, low power, and fast switching time. MATLAB Simulink (R2018a) software is used to simulate the devised design. The theoretical prediction is satisfied by the simulation results.
The investigation of serum protein profiles in anal fistula for potential biomarkers
Authors: Peng Yunhua , Lu Hong , Zhang Wei , Chen Tian , Wang Qingyuan , Pei Yanni , Yang Qiqi , Yang Wei 
Published: November 2021

Abstract

Objectives
An anal fistula is an external abnormal anatomical connection between the rectum and the outer skin of the anus. Symptoms include anorectal pain, abscesses, perianal cellulitis, smelly or bloody drainage of pus, and, in some cases, difficulty controlling bowel movements. Diagnosis and evaluation of anal fistulas is crucial for prognosis and for the choice of the treatment method. In this study, we aimed to discover potential biomarkers from serum proteins for the prediction of anal fistulas.

Methods
Using antibody array technology, the expression of 40 proteins was simultaneously detected in serum samples from 13 patients with anal fistulas with chronic diarrhea, 14 patients with chronic diarrhea and six healthy volunteers. Differentially expressed proteins were subsequently validated by ELISA, with a sample population expanded to 30 patients with anal fistulas and chronic diarrhea, 30 patients with chronic diarrheas only and 20 healthy controls.

Results
Quantification analysis identified MIP-1α, MIP-1β and TNF-R1 with significant differential expression between the anal fistula with chronic diarrhea, chronic diarrhea only and healthy control groups. Bioinformatics analyses, including PCA and heat map creation, showed a clear separation between the three groups using the expression of MIP-1α, MIP-1β and TNF-R1. Validation by ELISA with the expanded sample population fistulas showed significant differential expression levels of MIP-1α, MIP-1β and TNF-R1, displaying accuracy rates of 0.898, 0.987 and 1.0 between the anal fistula with chronic diarrhea and healthy control groups. Accuracy rates between the anal fistula with chronic diarrhea and the chronic diarrhea only groups were 0.9768, 0.909 and 0.964, respectively.

Conclusions
These results suggest the feasibility of employing serum proteins MIP-1α, MIP-1β and TNF-R1 as potential biomarkers for rapid and convenient diagnosis of anal fistula in chronic diarrhea patients.
Data mining of pediatric reference intervals
Authors: Zierk Jakob , Metzler Markus , Rauh Manfred 
Published: November 2021

Abstract
Laboratory tests are essential to assess the health status and to guide patient care in individuals of all ages. The interpretation of quantitative test results requires availability of appropriate reference intervals, and reference intervals in children have to account for the extensive physiological dynamics with age in many biomarkers. Creation of reference intervals using conventional approaches requires the sampling of healthy individuals, which is opposed by ethical and practical considerations in children, due to the need for a large number of blood samples from healthy children of all ages, including neonates and young infants. This limits the availability and quality of pediatric reference intervals, and ultimately negatively impacts pediatric clinical decision-making. Data mining approaches use laboratory test results and clinical information from hospital information systems to create reference intervals. The extensive number of available test results from laboratory information systems and advanced statistical methods enable the creation of pediatric reference intervals with an unprecedented age-related accuracy for children of all ages. Ongoing developments regarding the availability and standardization of electronic medical records and of indirect statistical methods will further improve the benefit of data mining for pediatric reference intervals.
Crystal structure of (E)-7-fluoro-2-(3-fluorobenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C17H12F2O1
Authors: Song Jia , Zhao Feng-Lan , Wang Qi-bao , Meng Qing-Guo 
Published: November 2021

Abstract
C17H12F2O1, monoclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 7.3832(8) Å, b = 8.6467(9) Å, c = 11.3278(11) Å, α = 87.633(8)°, β = 88.022(8)°, γ = 65.364(10)°, V = 654.88(13) Å3, Z = 2, R

gt
(F) = 0.0369, wR

ref
(F
2) = 0.0987, T = 293(2) K.
Some common and dynamic properties of logarithmic Pareto distribution with applications
Authors: Kayid Mohamed 
Published: November 2021

Abstract
The Pareto distribution satisfies the power law, which is widely used in physics, biology, earth and planetary sciences, economics, finance, computer science, and many other fields. In this article, the logarithmic Pareto distribution, a logarithmic transformation of the Pareto distribution, is presented and studied. The moments, percentiles, skewness, kurtosis, and some dynamic measures such as hazard rate, mean residual life, and quantile residual life are discussed. The parameters were estimated by quantile and maximum likelihood methods. A simulation study was conducted to investigate the efficiency, consistency, and behavior of the maximum likelihood estimator. Finally, the proposed distribution was fitted to some datasets to show its usefulness.
Enhancement of thermoelectric and mechanical properties of thermoplastic vulcanizates (TPVs) with hydroxylated graphene by dynamic vulcanization
Authors: Tang Qi , Cao Lan , Lang Xiurui , Zong Yingxia , Zong Chengzhong 
Published: November 2021

Abstract
In order to obtain higher thermoelectric and mechanical properties in nonpolar thermoplastic vulcanizates (TPVs), the butyl rubber/polypropylene (TPVs)/hydroxylated graphene (HGE) composites with nanosheet network were prepared through masterbatch technique and based on thermodynamic calculations, using polypropylene-graft-maleic anhydride (PP-MA) as a compatibilizer. The Fourier transform infrared (FTIR) and Raman spectra revealed the introduced maleic anhydride group on PP-MA can form strong interfacial interaction with hydroxyl-containing functional groups on HGE. Morphology study indicated the rubber particles in the composites occupied the most volume of the PP phase, as expected to hinder the aggregation of HGE and form the effective nanosheet network. The nanosheet network can be combined with the butyl rubber (IIR) cross-linked particles during the dynamic vulcanization process to improve the interface bonding between PP and IIR, thus increasing the tensile strength of TPVs. The prepared TPVs/HGE composites have significantly improved in mechanical properties, thermal properties and dielectric properties, which provides a guarantee for their potential application as multifunctional TPVs polymers.