bluuebunny/crossref_metadata_2025_split huggingface dataset:
On ve-degree- and ev-degree-based topological properties of crystallographic structure of cuprite Cu2O
Authors: Chen Shu-Bo , Rauf Abdul , Ishtiaq Muhammad , Naeem Muhammad , Aslam Adnan 
Published: May 2021

Abstract
In the study of chemical graph theory, an enormous number of research analyses have confirmed that the characteristics of chemicals have a nearby connection with their atomic structure. Topological indices were the critical tools for the analysis of these chemical substances to consider the essential topology of chemical structures. Topological descriptors are the significant numerical quantities or invariant in the fields of chemical graph theory. In this study, we have studied the crystal structure of copper oxide (

Cu

2

O

{{\rm{Cu}}}_{2}{\rm{O}}

) chemical graph, and further, we have calculated the ev-degree- and ve-degree-based topological indices of copper oxide chemical graph. This kind of study may be useful for understanding the atomic mechanisms of corrosion and stress–corrosion cracking of copper.
New trends in visual inspection of buildings and structures: Study for the use of drones
Authors: Falorca Jorge Furtado , Miraldes João P. N. D. , Lanzinha João Carlos Gonçalves 
Published: May 2021

Abstract
Visual inspection is a very simple, non-destructive technique and usual in diagnosing buildings and structures’ conditions. It also plays an important role in the rapid assessment of constructive problems as well as in the definition of an appropriate way for eventual remedial interventions. However, the use of this methodology often meets difficulties, especially when places to be inspected are difficult to access; it involves security risks for inspectors or even when a reactive inspection of urgent nature becomes unfeasible due to the high costs and the necessary means involved. In this context, the introduction of new technologies, such as drones, can bring substantial benefits. Currently, great focus has been put on this type of device as an emerging technology in the construction industry. This article treats about a reflexion on the adaptability and versatility of using drones, within a framework for monitoring the condition of buildings’ envelope, just as for other kinds of structures (e.g. bridges, viaducts, dams, chimneys, etc.). The interest lies, for now, in devices with a multirotor configuration, integrating high-definition cameras for both photography and video. In order to verify these assumptions, several field tests are being performed, of which some examples are presented.
Effect of coupling agents on the olive pomace-filled polypropylene composite
Authors: Aljnaid Malek , Banat Raid 
Published: May 2021

AbstractThe effect of the olive pomace flour (OPF) addition on the mechanical, water uptake, morphological, and thermal properties of polypropylene (PP) with and without the use of two coupling agents was investigated. A higher percentage of a coupling agent yielded a greater impact strength of 141 J/m. Tensile and flexural properties of the OPF/PP composite were improved with the two coupling agents. The addition of OPF to pure PP had reduced these properties, thus proving the utility of the coupling agents. While the addition of the OPF to PP increased the water uptake property by 1.36%, the subsequent addition of a coupling agent decreased it to 0.78%. For the neat PP, the enthalpy of melting (∆Hm= 123 J/g), the enthalpy of crystallization (∆Hc= 133 J/g), and the percent of crystallinity (Xc= 59%) values showed a declining trend down to 91, 103 J/g, and 44%, respectively, when the filler and coupling agents added to the composite. The results of this study demonstrated that the OPF could be used as a viable reinforcement for the PP, providing good mechanical and morphological properties, as long as an appropriate coupling agent proportion is added to the composite.
Barriers and Mitigating Strategies of Entrepreneurial Business Growth: The Role of Entrepreneur Race and Gender
Authors: Conley Natasha , Bilimoria Diana 
Published: May 2021

Abstract
In this study, we investigate the obstacles to growth and the mitigating strategies of high-performing (over $1 million in revenues) entrepreneurial businesses, and how these differ between businesses owned by Black and White entrepreneurs and between female and male entrepreneurs. Data were collected through semi-structured interviews and qualitatively analyzed using grounded theory and thematic analysis methods. Findings reveal that the lack of access to capital is faced by all groups of entrepreneurs, but that Black and female entrepreneurs additionally faced racial discrimination and gender bias obstacles to their business growth. While all entrepreneurs used social capital strategies to mitigate the barriers to growth that their businesses faced, Black and female entrepreneurs additionally employed faith and prayer as well as business engagement in governmental and corporate diversity initiatives as strategies to overcome the obstacles. Implications of the findings for the entrepreneurial business growth of racial/ethnic minority and female-owned firms are discussed.
Evolution regularity of temperature field of active heat insulation roadway considering thermal insulation spraying and grouting: A case study of Zhujidong Coal Mine, China
Authors: Yao Weijing , Lyimo Happiness , Pang Jianyong 
Published: May 2021

Abstract
To study the active heat insulation roadways of high-temperature mines considering thermal insulation and injection, a high-temperature −965 m return air roadway of Zhujidong Coal Mine (Anhui Province, China) is selected as a prototype. The ANSYS numerical simulation method is used for the sensitivity analysis of heat insulation grouting layers with different thermal conductivities and zone ranges and heat insulation spray layers with different thermal conductivities and thicknesses; thus, their effects on the heat-adjusting zone radius, surrounding rock temperature field, and wall temperature are studied. The results show that the tunneling head temperature of the Zhujidong Mine is >27°C all year round, consequently causing serious heat damage. The heat insulation circle formed by thermal insulation spraying and grouting can effectively alleviate the disturbance of roadway airflow to the surrounding rock temperature field, thereby significantly reducing the heat-adjusting zone radius and wall temperature. The decrease in the thermal conductivities of the grouting and spray layers, expansion of the grouting layer zone, and increase in the spray layer thickness help effectively reduce the heat-adjusting zone radius and wall temperature. This trend decreases significantly with the ventilation time. A sensitivity analysis shows that the use of spraying and grouting materials of low thermal conductivity for thermal insulation is a primary factor in determining the temperature field distribution, while the range of the grouting layer zone and the spray layer thickness are secondary factors. The influence of the increased surrounding rock radial depth and ventilation time is negligible. Thus, the application of thermal insulation spraying and grouting is essential for the thermal environment control of mine roadways. Furthermore, the research and development of new spraying and grouting materials with good thermal insulation capabilities should be considered.
Digital Object Identifier (DOI) and DOI Services: An Overview
Authors: Liu Jia 
Published: May 2021

Abstract
In the establishing anniversary of the two biggest Digital Object Identifier (DOI) registration agencies all over the world, Crossref and DataCite, the paper intends to provide an overview of the development and approaches and of DOI and DOI services, from which scholarly communication has benefited greatly. At first, the author explores the initiation of DOI and differences of DOI from other persistent identifiers. After that, DOIs for different kinds of objects and DOIs’ value in enhancing scholarly communication is discussed; then, in the second part, DOI services at different levels in a pyramid and those particularly in Germany are described. The active involvement of the library world are also introduced here; finally, the current situation and prospects as well as some issues dealing with DOIs and DOI services are investigated in the last part of the paper.
A nomogram for predicting metabolic steatohepatitis: The combination of NAMPT, RALGDS, GADD45B, FOSL2, RTP3, and RASD1
Authors: Liao Shenling , He He , Zeng Yuping , Yang Lidan , Liu Zhi , An Zhenmei , Zhang Mei 
Published: May 2021

Abstract

Objective
To identify differentially expressed and clinically significant mRNAs and construct a potential prediction model for metabolic steatohepatitis (MASH).

Method
We downloaded four microarray datasets, GSE89632, GSE24807, GSE63067, and GSE48452, from the Gene Expression Omnibus database. The differentially expressed genes (DEGs) analysis and weighted gene co-expression network analysis were performed to screen significant genes. Finally, we constructed a nomogram of six hub genes in predicting MASH and assessed it through receiver operating characteristic (ROC) curve, calibration plot, and decision curve analysis (DCA). In addition, qRT-PCR was used for relative quantitative detection of RNA in QSG-7011 cells to further verify the expression of the selected mRNA in fatty liver cells.

Results
Based on common DEGs and brown and yellow modules, seven hub genes were identified, which were NAMPT, PHLDA1, RALGDS, GADD45B, FOSL2, RTP3, and RASD1. After logistic regression analysis, six hub genes were used to establish the nomogram, which were NAMPT, RALGDS, GADD45B, FOSL2, RTP3, and RASD1. The area under the ROC of the nomogram was 0.897. The DCA showed that when the threshold probability of MASH was 0–0.8, the prediction model was valuable to GSE48452. In QSG-7011 fatty liver model cells, the relative expression levels of NAMPT, GADD45B, FOSL2, RTP3, RASD1 and RALGDS were lower than the control group.

Conclusion
We identified seven hub genes NAMPT, PHLDA1, RALGDS, GADD45B, FOSL2, RTP3, and RASD1. The nomogram showed good performance in the prediction of MASH and it had clinical utility in distinguishing MASH from simple steatosis.
Influence of extrusion screw speed on the properties of halloysite nanotube impregnated polylactic acid nanocomposites
Authors: Venkatesh Chaitra , Chen Yuanyuan , Cao Zhi , Brennan Shane , Major Ian , Lyons John G. , Devine Declan M. 
Published: May 2021

Abstract
Poly (lactic acid)/halloysite nanotube (PLA/HNT) nanocomposites have been studied extensively over the past few years owing to the interesting properties of the polymer, PLA, and the nanoclay, HNT, individually and as composites. In this paper, the influence of the screw speed during extrusion was investigated and was found to have a significant impact on the mechanical and thermal performance of the extruded PLA/HNT nanocomposites. To determine the effect of screw speed on PLA/HNT nanocomposites, 5 and 10 wt% of HNTs were blended into the PLA matrix through compounding at screw speeds of 40, 80, and 140 rpm. Virgin PLA was compounded for comparison. The resultant polymer melt was quench cooled onto a calendar system to produce composite films which were assessed for mechanical, thermal, chemical, and surface properties. Results illustrate that in comparison to 40 and 80 rpm, the virgin PLA when compounded at 140 rpm, indicated a significant increase in the mechanical properties. The PLA/HNT 5 wt% nanocomposite compounded at 140 rpm showed significant improvement in the dispersion of HNTs in the PLA matrix which in turn enhanced the mechanical and thermal properties. This can be attributed to the increased melt shear at higher screw speeds.
Alpha track registration and revelation in CR-39 using new etching method for ultratrace alpha radioactivity quantification in solution media
Authors: Chavan Sushma S. , Mhatre Amol M. , Pandey Ashok K. , Bagla Hemlata K. 
Published: May 2021

Abstract
A CR-39 based method was developed for measuring the ultra-trace alpha radio activities in aqueous samples having curie levels of γ/β-radio activities. The chemical etching method was optimized to reveal the alpha tracks in CR-39. This new chemical etching method involved the use of a phase transfer catalyst tetraethylammonium bromide which reduced the track revelation induction time without deteriorating the track-etch parameters. The alpha track-etch parameters such as bulk-etch rate, track-etch rate, induction time, and the critical angle of alpha track registration were measured at 60 and 70 °C, with and without using a phase transfer catalyst in the chemical etching for the comparison and optimization. The track registration efficiency of CR-39 in the solution medium was measured using the samples having known alpha activity of mixPu, and value obtained was found to be (4.42 ± 0.12) × 10−4 cm. The registration efficiency value thus obtained was corroborated with the expected efficiency expected from the calculated range of alpha particles in the solution. This CR-39 based method was employed to quantify the alpha activity, as low as 0.2 Bq mL−1, in the aqueous radiopharmaceutical samples having the curie levels of γ/β radio activities.
Naringin attenuates cerebral ischemia-reperfusion injury in rats by inhibiting endoplasmic reticulum stress
Authors: Wang Li , Zhang Zhe , Wang Haibin 
Published: May 2021

Abstract

Objective
This investigation was carried out with an aim of exploring neuroprotection by naringin (Nar) in rats with cerebral ischemia-reperfusion (CI/R) injury and its mechanism.

Methods
Rats were grouped into ischemia-reperfusion (I/R), sham operation (Sham), nimodipine control (NIM), and different doses of Nar (Nar-L, Nar-M, Nar-H) groups. With Zea Longa score for assessment of neurological deficits, dry and wet method for measurement of brain tissue water content, and (2,3,5-triphenyltetrazolium chloride) TTC staining for determination of cerebral infarction volume, the related parameters were obtained and compared. Subsequently, ELISA was introduced to detect levels of proinflammatory cytokines (TNF-α, IL-8) and anti-inflammatory cytokine (IL-10) in the serum as well as superoxide dismutase (SOD) and malondialdehyde (MDA) activities in brain tissue. Western blot was applied to evaluate endoplasmic reticulum stress (ERS)-related proteins expression, including glucose-regulated protein 78 (GRP78), C/EBP homologous protein (CHOP), caspase-12, and activating transcription factor 6 (ATF-6).

Results
Nar significantly alleviated nerve injury and decreased brain tissue water content and brain infraction volume in CI/R injury rats in a concentration-dependent manner. Reduction of TNF-α, IL-8 as well as MDA content and elevation of IL-10 as well as SOD activity were confirmed to be caused by Nar treatment in a concentration-dependent manner. Meanwhile, ERS-related proteins also markedly decreased in the Nar groups.

Conclusion
Nar may achieve neuroprotection and alleviation of CI/R injury by anti-inflammation, anti-oxidation, and inhibiting ERS, and its efficacy is concentration-dependent.
Flavonolignan 2, 3-dehydroderivatives from Oenanthe javanica and their anti inflammatory activities
Authors: Wei Rong-Rui , Ma Qin-Ge 
Published: May 2021

Abstract
Flavonolignans, for example, silymarin and silybin, have interesting biological activities. For the first time, three new flavonolignans named oenanthenoid A-C (1–3) and nine known flavonolignan derivatives (4–12) were isolated from Oenanthe javanica. Comprehensive spectroscopic data analysis and references were used to identify all of the compounds. The anti inflammatory activities of these isolates (1–12) on RAW264.7 macrophage cells were investigated. Three new compounds (1–3) demonstrated anti inflammatory activity with IC50 values ranging from 6.5 ± 0.6 to 14.7 ± 1.6 µM. Furthermore, two compounds (11 and 12) demonstrated moderate anti inflammatory activity, with IC50 values ranging from 24.1 ± 1.2 to 62.5 ± 1.9 µM.
A Review on Steels for Cryogenic Applications
Authors: Anoop C. R. , Singh R. K. , Kumar Ravi Ranjan , Jayalakshmi M. , Antony Prabhu T. , Thomas Tharian K. , Narayana Murty S. V. S. 
Published: May 2021

Abstract
Cryogenic systems have played a crucial role in almost all of the finest technological achievements of mankind. Cryogenic applications demand materials with a unique combination of properties, which drastically limits the choice of materials. In most other engineering applications, because of wide tailorability of their properties and excellent combination of strength and toughness, coupled with lower cost compared with nonferrous materials, steels have become the preferred/dominant structural material for cryogenic applications. The contradictory requirement of higher strength without compromising toughness at cryogenic temperatures posed considerable challenges and led to the development of large array of steels tailored for specific applications. This review is an attempt to survey the metallurgical aspects, material selection, mechanical property evaluation, and application of various standard and nonstandard steels for cryogenic applications. This review covers the influence of low temperatures on material properties, simulative mechanical tests for property evaluation, metallurgy of steels, and application examples surveying the published literature to date. The review also analyzes the origins of low-temperature toughness, various application requirements, and the work carried out at authors’ laboratories. The issues pertaining to mechanical tests at low temperatures and status of data generation in international scenario have been critically analyzed. Physical metallurgy aspects have been highlighted in the review, and microstructure-property-processing correlations for various steels have also been covered. One of the recent advances in steels for cryogenic applications, high-entropy alloys, which are proposed as alternatives for the conventional steels, have been reviewed, and mechanical property data have been critically analyzed. The potential of additive manufactured steels for low-temperature applications has been reviewed. Finally, this review article discusses challenges in processing–mechanical properties correlation for various grades of steels for cryogenic applications. It also provides useful information for researchers working on steels for cryogenic applications with a glimpse of recent advances made in this area.
Mechanically deboned turkey meat with improved digestibility and biological value
Authors: Takács K. , Szerdahelyi E. , Nagy A. , Gelencsér É. 
Published: May 2021

AbstractEnzymatic hydrolysates of mechanically deboned meat (MDM) for a long time have been used as flavouring and functional food ingredients in the food industry and also as the bases of formula foods for special dietary uses.The aim of the present study was to produce MDM hypo-antigenic products with improved digestibility and high biological value to be used as a milk protein alternative. turkey MDM was treated with digestive enzymes (trypsin and/or α-chymotrypsin, or pancreatin), followed by freeze drying. The optimised reaction conditions of hydrolysis were at 6% (w/v) of meat protein in 0.1% NaHCO3 buffer, pH 7.5; pancreatin enzyme with 50 TAME units/g meat protein substrate, 37 °C and 60 min). Hydrolysates (MDMH) were assessed for degree of hydrolyses (DH, %) by using trinitrobenzenesulphonic acid method and MW distribution by SDS-PAGE. Modification of immune reactive binding sites in MDMHs was monitored by immunoblot with cow’s milk, chicken egg or meat allergic human patients’ sera. Biological value indices (True Digestibility (TD), Net Protein Utilisation (NPU), Biological Value (BV)) were determined using rat feeding trials. Among the MDMH products, the pancreatic hydrolysate proved to be the most favourable in terms of biological value and digestibility as well as hypoallergenic property.
Towards an Integral Forensic Anthropology
Authors: Marín Suárez Carlos , Rosignoli Bruno 
Published: May 2021

This paper presents a comparative study of forensic anthropology as the field has developed in Argentina and Uruguay, two Southern Cone countries that have transitioned from dictatorship to democracy in contrasting circumstances. In the context of investigating crimes against humanity, the archaeology of the recent past offers a “third narrative” alongside documentation and testimony, and it has had a great impact as a source of probatory material in judicial contexts in both countries. However, its focus has been almost exclusively on locating and retrieving human remains, whereas we propose a broader integral forensic anthropology that takes account of the wide range of materiality related to crimes against humanity. If forensic anthropology and archaeology are to fulfil this potential, it is fundamental that they remain independent of state power and holistic in scope.
Ultrasound Differential Diagnosis and Prognosis of Right Main Bronchus Atresia in Fetus: Clinical Case
Authors: Normuradova Nodira M. , Kurbanova Vusala V. 
Published: May 2021

Background. Obstructive lesion of upper respiratory tract in fetus is extremely rare pathology with adverse perinatal outcomes.Clinical Case Description. Ultrasound examination of fetus (gestational age 21 weeks 6 days) has revealed one-sided isolated main bronchus atresia. Atresia was presented as enlargement of right lung due to mucus accumulation, its increased echogenicity, mediastinal displacement to the left and left lung size reduction. We performed differential diagnosis with cystic-adenomatous lung malformation type III, congenital lobar emphysema and pulmonary sequestration. These conditions are also characterized by lung echogenicity and volume increase but they are usually limited to one lung lobe or segment, and pulmonary sequestration has a systemic blood supply. The use of high-frequency transducers, lung vessels Doppler imaging and volume echography allow us to investigate in detail the lung structure of the fetus, correctly calculate the lungs volume and timely the main bronchus atresia at the second trimester of pregnancy.Conclusion. The ultrasound diagnosis of isolated main bronchus atresia is based on revealing of increased lung volume on ipsilateral side, its increased echogenicity, presence of hypoechogenic linear tubular structures (bronchocele), mediastinal displacement to the opposite side and extreme hypoplasia of the contralateral lung. Prognosis for the life is unfavorable.