bluuebunny/crossref_metadata_2025 huggingface dataset:
Synovitis, Acne, Pustulosis, Hyperostosis, and Osteitis Syndrome with Purely Osteolytic, Not Osteosclerotic, Lesions Mimicking a Malignant Tumor
Authors: Kinoshita Hideyuki , Ishii Takeshi , Kamoda Hiroto , Hagiwara Yoko , Tsukanishi Toshinori , Orita Sumihisa , Inage Kazuhide , Hirosawa Naoya , Ohtori Seiji , Yonemoto Tsukasa
Published: March 2020

Synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO) syndrome is a rare inflammatory disorder with multiple phenotypes. The syndrome has identifiable radiologic characteristics that are the most important when making a diagnosis. X-rays of cases diagnosed with SAPHO syndrome reveal sclerotic lesions or mixed lytic and sclerotic lesions. Pure osteolytic lesions in SAPHO syndrome are rare, and to the best of our knowledge, no study has reported the radiologic change of purely osteolytic lesions to osteosclerotic lesions over time. Herein, we report on the case of a woman experiencing severe left thigh acute pain and having a medical history of palmoplantar pustulosis. Although SAPHO syndrome was suspected because of palmoplantar pustulosis, based on radiologic findings, bone metastasis of a malignant tumor or chronic bacterial osteomyelitis owing to a purely osteolytic lesion was suspected. However, needle biopsy revealed no malignancy and bacterial culture was negative, thus suggesting SAPHO syndrome. Nonsteroidal anti-inflammatory drugs, bisphosphonates, and corticosteroids were administered, which improved the left thigh pain. Furthermore, the radiologic change of osteolytic lesions to osteosclerotic lesions over time was confirmed, leading to the diagnosis of SAPHO syndrome. Our case demonstrates that knowledge of atypical radiologic findings is necessary to diagnose initial SAPHO syndrome.
Numerical Simulation on the Penetration Behavior of the Projectile during the Water Injection Stage of Water-Projectile-Assisted Injection Molding Process
Authors: Kuang Tangqing , Feng Qiang , Liu Tian , Zhong Luohao , Wang Yanqing , Liu Hesheng
Published: March 2020

Water-projectile-assisted injection molding (W-PAIM) is a novel molding process for plastic pipes with complicated shape. It utilizes high-pressure water as a power to push a solid projectile to penetrate through the melt to form a hollow space. In order to investigate the penetration behavior of the projectile during the water injection stage of W-PAIM process, numerical simulation of the water injection stage of a W-PAIM pipe with straight and curved segments was carried out. A turbulent flow for the driving water was considered in the motion equation, and the dynamic mesh technology was used to deal with the moving solid projectile. The simulation results, including RWT and the flow fields, were compared with those of water-assisted injection molding (WAIM) pipe with the same outer dimensions. It was found that the residual wall thickness (RWT) of the W-PAIM pipe is much thinner than that of the WAIM pipe. The projectile has a crucial influence on the RWT. The pressure fields of W-PAIM and WAIM are very similar in both straight and curved segments. The velocity field and strain rate field near the penetration front in W-PAIM are quite different from those in WAIM due to the drag flow caused by the projectile penetration.
The Efficacy and Safety of Mesalamine and Probiotics in Mild‐to‐Moderate Ulcerative Colitis: A Systematic Review and Meta‐Analysis
Authors: Tian Chunying , Huang Yang , Wu Xiaoxia , Xu Chuhan , Bu Huaien , Wang Hongwu
Published: March 2020

Objective. To evaluate the efficacy and safety of mesalamine in conjunction with probiotics for ulcerative colitis. Methods. Random controlled trials (RCTs) were searched in PubMed, EMBASE, Cochrane Library, China National Knowledge Infrastructure, Wanfang, and VIP (VIP Database for Chinese Technical Periodicals) from inception to October 2019. Methodological quality was assessed by the Cochrane Collaboration tool. The quality of evidence was rated by the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE). Data analysis was carried out in Review Manager 5.3. Results. A total of fifteen studies met the criteria for inclusion. Thirteen studies reported the clinical efficacy, three studies provided data on the clinical symptom scores, two trials reported disease activity index, four studies evaluated endoscopic score, and twelve studies reported adverse events. For ulcerative colitis (UC), mesalamine and probiotics had better clinical efficacy than mesalamine alone (≤8 weeks: RR = 1.12, 95% CI: 1.07–1.18, P < 0.0001; >8 weeks: RR = 1.25, 95% CI: 1.11–1.41, P = 0.0003). On the clinical symptom scores, disease activity index, and endoscopic score, UC patients receiving mesalamine and probiotics had significant difference than patients receiving mesalazine alone (MD = −2.02, 95% CI: −3.28 to −0.76, P = 0.002; MD = −1.20, 95% CI: −1.76 to −0.65, P < 0.001; and MD = −0.42, 95% CI: −0.61 to −0.23, P < 0.0001, respectively). There was no statistically significant difference in adverse events between the two groups (RR = 0.88, 95% CI: 0.54 to 1.43, P = 0.60). Conclusion. Our meta‐analysis results supported that mesalamine and probiotics were effective and safe in treating ulcerative colitis.
Genetic Evolution of Mycobacterium abscessus Conferring Clarithromycin Resistance during Long-Term Antibiotic Therapy
Authors: Li Bing , Guo Qi , Mao Yanhua , Zou Yuzhen , Zhang Yongjie , Zhang Zhemin , Chu Haiqing
Published: March 2020

Objectives. Clarithromycin is recommended as the core agent for treating M. abscessus infections, which usually calls for at least one year of treatment course, facilitating the development of resistance. This study aimed to identify the underlying mechanism of in vivo development of clarithromycin resistance in M. abscessus clinical isolates. Methods. M. abscessus isolates from patients with lung infections during long-term antibiotic therapy were longitudinally collected and sequenced. PFGE DNA fingerprinting was used to confirm the genetic relationships of the isolates. Whole genome comparative analysis was performed to identify the genetic determinants that confer the clarithromycin resistance. Results. Three pairs of initially clarithromycin-susceptible and subsequently clarithromycin-resistant M. abscessus isolates were obtained. We found that the clarithromycin-resistant isolates emerged relatively rapidly, after 4–16 months of antibiotic therapy. PFGE DNA fingerprinting showed that the clarithromycin-resistant isolates were identical to the initial clarithromycin-susceptible ones. Whole genome sequencing and bioinformatics analysis identified several genetic alternations in clarithromycin-resistant isolates, including genes encoding efflux pump/transporter, integral component of membrane, and the tetR and lysR family transcriptional regulators. Conclusion. We identified genes likely encoding new factors contributing to clarithromycin-resistance phenotype of M. abscessus, which can be useful in prediction of clarithromycin resistance in M. abscessus.
Properties of 3D Printable Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends and Nano Talc Composites
Authors: Prasong Wattanachai , Muanchan Paritat , Ishigami Akira , Thumsorn Supaphorn , Kurose Takashi , Ito Hiroshi
Published: March 2020

Biodegradable poly(lactic acid) (PLA) filaments have been widely used in the fused deposition modeling (FDM) 3D printing technology. However, PLA has low toughness and low thermal resistance that affects printability and restricts its industrial applications. In this study, PLA was compounded with 0 to 40 wt% of poly(butylene adipate-co-terephthalate) (PBAT) and varied content of nano talc at 0 to 40 wt% in a twin screw extruder. The compounds were reextruded to filaments using a capillary rheometer. PLA/PBAT blends and their composite filaments were printed with a FDM 3D printing machine. Morphology, rheological behaviour, thermal characteristic, surface roughness, and mechanical property of 3D printing of the blends and the composites were investigated. Complex viscosity of the blends and the composites increased with increase of the PBAT and the nano talc contents. The incorporation of the nano talc enhanced crystallization temperature and reduced the coefficient of volume expansion of the composites. It was found that the PLA/PBAT blends and composites were excellent in both printability and dimension stability at PBAT content 10-30 wt% and nano talc up to 10 wt%. Interestingly, it was possible to print the composite filaments at an angle up to 75° during the overhang test without a supporter. From the vertical specimens, the surface roughness improved due to the incorporation of the nano talc. Tensile strength of the blends and the composites decreased, whereas elongation at break increased when the PBAT and the nano talc contents were increased. The reduction of tensile strength was attributed to agglomeration of the PBAT dispersed phase and less adhesion between the nano talc and the matrix. It can be noted that the composite 3D printing product showed superior elongation at break up to 410% by adding nano talc 1 wt%. This result suggests that the ductile 3D printable PLA/PBAT blend and the PLA/PBAT-nano talc composite products can be prepared, which shows potential for the commercialized scale.
Oral and Intravenous Fosfomycin for the Treatment of Complicated Urinary Tract Infections
Authors: Zhanel George G. , Zhanel Michael A. , Karlowsky James A.
Published: March 2020

Oral fosfomycin is approved in Canada for the treatment of acute uncomplicated cystitis. Several studies have reported “off label” use of oral fosfomycin in the treatment of patients with complicated lower urinary tract infection (cLUTI). This review summarizes the available literature describing the use of oral fosfomycin in the treatment of patients with cLUTI. Collectively, these studies support the use of a regimen of 3 grams of oral fosfomycin administered once every 48 or 72 hours for a total of 3 doses for patients who have previously failed treatment with another agent, are infected with a multidrug-resistant (MDR) pathogen, or cannot tolerate first-line treatment due to intolerance or adverse effects. Additionally, a Phase 2/3 clinical trial, known as the ZEUS study, assessed the efficacy and safety of intravenous (IV) fosfomycin versus piperacillin-tazobactam in the treatment of patients with complicated upper urinary tract infection (cUUTI) or acute pyelonephritis (AP) including in patients with concomitant bacteremia. IV fosfomycin was reported to be noninferior to piperacillin-tazobactam in treating patients with cUUTI and AP; however, when outcomes were independently evaluated according to baseline diagnosis (i.e., cUUTI versus AP), IV fosfomycin was superior to piperacillin-tazobactam in the treatment of patients with cUUTI and demonstrated superior microbiological eradication rates, across all resistant phenotypes including extended-spectrum β-lactamase- (ESBL-) producing Escherichia coli and Klebsiella spp. and carbapenem-resistant (CRE), aminoglycoside-resistant, and MDR Gram-negative bacilli (primarily Enterobacterales). Based on the ZEUS study, IV fosfomycin dosed at 6 grams every 8 hours for 7 days (14 days in patients with concurrent bacteremia) appears to be a safe and effective therapeutic option in treating patients with upper urinary tract infections, particularly those with cUUTI caused by antimicrobial-resistant Enterobacterales.
On the Generalization of a Solution for a Class of Integro-Differential Equations with Nonseparated Integral Boundary Conditions
Authors: Xing Yanyuan , Jiao Feng , Liu Fang
Published: March 2020

In this paper, the existence and uniqueness results of the generalization nonlinear fractional integro-differential equations with nonseparated type integral boundary conditions are investigated. A natural formula of solutions is derived and some new existence and uniqueness results are obtained under some conditions for this class of problems by using standard fixed point theorems and Leray–Schauder degree theory, which extend and supplement some known results. Some examples are discussed for the illustration of the main work.
DAGAN: A Domain-Aware Method for Image-to-Image Translations
Authors: Yin Xu , Li Yan , Shin Byeong-Seok
Published: March 2020

The image-to-image translation method aims to learn inter-domain mappings from paired/unpaired data. Although this technique has been widely used for visual predication tasks—such as classification and image segmentation—and achieved great results, we still failed to perform flexible translations when attempting to learn different mappings, especially for images containing multiple instances. To tackle this problem, we propose a generative framework DAGAN (Domain-aware Generative Adversarial etwork) that enables domains to learn diverse mapping relationships. We assumed that an image is composed with background and instance domain and then fed them into different translation networks. Lastly, we integrated the translated domains into a complete image with smoothed labels to maintain realism. We examined the instance-aware framework on datasets generated by YOLO and confirmed that this is capable of generating images of equal or better diversity compared to current translation models.
Comparison of Electromechanical Delay during Ventricular Tachycardia and Fibrillation under Different Conductivity Conditions Using Computational Modeling
Authors: Heikhmakhtiar Aulia K. , Lim Ki M.
Published: March 2020

Electromechanical delay (EMD) is the time interval between local myocyte depolarization and the onset of myofiber shortening. Previously, researchers measured EMD during sinus rhythm and ectopic pacing in normal and heart failure conditions. However, to our knowledge, there are no reports regarding EMD during another type of rhythms or arrhythmia. The goal of this study was to quantify EMD during sinus rhythm, tachycardia, and ventricular fibrillation conditions. We hypothesized that EMD under sinus rhythm is longer due to isovolumetric contraction which is imprecise during arrhythmia. We used a realistic model of 3D electromechanical ventricles. During sinus rhythm, EMD was measured in the last cycle of cardiac systole under steady conditions. EMD under tachycardia and fibrillation conditions was measured during the entire simulation, resulting in multiple EMD values. We assessed EMD for the following 3 conduction velocities (CVs): 31 cm/s, 51 cm/s, and 69 cm/s. The average EMD during fibrillation condition was the shortest corresponding to 53.45 ms, 55.07 ms, and 50.77 ms, for the CVs of 31 cm/s, 51 cm/s, and 69 cm/s, respectively. The average EMD during tachycardia was 58.61 ms, 58.33 ms, and 52.50 ms for the three CVs. Under sinus rhythm with action potential duration restitution (APDR) slope 0.7, the average EMD was 66.35 ms, 66.41 ms, and 66.60 ms in line with the three CVs. This result supports our hypothesis that EMD under sinus rhythm is longer than that under tachyarrhythmia conditions. In conclusion, this study observed and quantified EMD under tachycardia and ventricular fibrillation conditions. This simulation study has widened our understanding of EMD in 3D ventricles under chaotic conditions.
Contour Tracking Control Based on Extended State Observer for Multiaxis Motion System
Authors: Wang Sanxiu , Zhou Qiang , Wang Yang
Published: March 2020

In the contouring process, the trajectory generated by the computer numerical control (CNC) machine tool is a result of the multiaxis coordinated motion. The contour error has a direct impact on the accuracy of the machined product. To obtain higher contouring accuracy of the multiaxis motion control system, this paper presents a cross-coupled control approach based on the extended state observer sliding mode control. First, a single-axis sliding mode controller is designed, and an extended state observer is used to estimate system disturbances and improve the system robustness. Then, the cross-coupled control approach handles the coordinated motion of multiple axes to improve the contour control accuracy. Next, a simulation study is conducted on the three-axis motion platform. Its result shows that the control algorithm is effective in reducing tracking errors and contour errors.
Stunting and development of behavior
Authors: Simamora Verawati , Santoso Sabar , Setiyawati Nanik
Published: March 2020

The current study aimed to examine the relationship between the incidence of Stunting, characteristics of mother with the development of toddlers 24-59 months in the work area of Sentolo I Public Health Center, KulonProgo Regency. The study design used was a retrospective cohort (historical cohort). The research was conducted in May 2019. The population of this study was all under-fives under the Sentolo Health Center I work area. There were 130 respondents consisting of 65 exposed groups and 65 unexposed groups participated in this study. The analysis used in this study used Chi-square.Developments wasdetected using Denver II. The results of the bivariate analysis showed that there was a relationship betweenStunting and the development of toddlers 24-59 months (p=0.003). There was no relationship between sex and number of siblings with the development of children under five (p=0.808). There is a significant relationship between the level of knowledge of mothers and toddler development (p=0.859). There is a relationship between the level of education of mothers with development (p=0.003). There is a relationship between family income and the development of (p=0.001), but there is no relationship between the work of mothers and children under five years (p=0.001).There is a relationship between Stunting and developing toddlers 24-59 months in the working area of Sentolo I Public Health Center, KulonProgo Regency.
Patient satisfaction with healthcare services: Bangladesh perspective
Authors: Mohiuddin Absul Kader
Published: March 2020

Patient satisfaction is a useful measure for providing a quality benchmark for healthcare services. Concern about the quality of healthcare services in Bangladesh has led to a loss of confidence in healthcare providers, low use of public health facilities and increased outflows of patients from Bangladesh to hospitals abroad. The key obstacles to access to health services are insufficient infrastructure and poor quality of existing facilities, lack of medical equipment, scarcity of doctors due to high patient load, long distance to the facilities and long waiting times until facilities have been reached, very short appointment hours, lack of empathy of health professionals, their generally callous and casual attitude, aggressive pursuit of monetary gains, poor levels of competence and, occasionally, disregard for the suffering that patients endure without being able to voice their concerns-all of these service failures are reported frequently in the print media. Such failures can play a powerful role in shaping patients’ negative attitudes and dissatisfaction with healthcare service providers and healthcare itself.
The effect of physical activity on lymphocyte count in smokers who consume black cumin seed (Nigella sativa L.) oil
Authors: Hidayati Titiek , Akrom Akrom , Apriani Laili
Published: March 2020

Twenty percent of the total number of human leukocytes is lymphocytes. Lymphocytes are responsible for the control of the adaptive immune system. Physical activity is any body movement that requires energy to do it. Physical activity is related to changes in a person's immunity so that it can reduce the risks of diseases such as obesity, hypertension, diabetes, cancer, and stroke. Black Cumin Seed Oil (BCSO) in various studies has been widely used as a supplement, especially as an immune-modulator. The purpose of this study is to see the effect of physical activity on lymphocyte levels in smokers who have been given Black Cumin Seed Oil for 30 days. This study used a single-blind Randomized Controlled Trial (RCT) method, with a total of 36 test subjects divided into four groups. Group 1 received placebo 3x1 capsules/day, group 2 received BCSO 3x1 capsules/day, group 3 received BCSO 3x2 capsules/day, and group 4 received BCSO 3x3 capsules/day. The intervention was carried out for 30 days, then on the 31st-day blood was drawn for analysis. Data analysis using an independent t-test to see the average group with high and low activity, while to see the average lymphocyte between treatment groups using one way ANOVA test. The test results were said to be significant if p <0.05. The p-value of the independent t-test is 0.045, and one way ANOVA test p-value is 0.343. In conclusion, physical activity can increase lymphocyte levels significantly, but not on BCSO administration.
Prevalence of premenstrual syndrome and quality of life among health science college student
Authors: Kustriyanti Dwi , Rahayu Hermeksi
Published: March 2020

Premenstrual syndrome (PMS) is a set of affective, behavioral and physical symptoms with appear in the luteal phase that could affect productivity and quality of life. PMS in adolescents could affect academic performance, such as a decreasing in concentration, failed the exam and absenteeism in the class. The objective was to evaluate the prevalence of PMS and determine its effect on quality of life among female health science students. This cross-sectional study was conducted between July-September 2017 on nursing female students of Health Science Collage “Karya Husada Semarang”, Central a Java, Indonesia. Students were enrolled 207 from first to fourth grade using WHOQOL–BREF form to determine quality of life. Inclusion criteria were having regular menstrual cycles (21-35 days) at least three period. Descriptive analysis and Mann Whitney tests were used for statistical analyses. The prevalence of PMS was found to be 60.8%. Physical health, psychological, social relationship, and environment domain were significantly higher in females with PMS (for each one P < 0.05).
The Changing Wildlife Tableau of Hunting Magazine Covers
Authors: von Essen Erica
Published: March 2020

Hunting trophies are shown to be undergoing socialization in photos. They are no longer personal souvenirs that serve a purely introspective function for the individual. Hunting photos are discussed, critiqued, and conspicuously displayed across online and print platforms. They are shared between hunters and lately also between hunters and the public. Criteria for good hunting photos reflect the changing modality and times in which photos are shared. The ways hunters stage, compose, and manipulate their hunting tableaux evolve to address external and internal pressures regarding their representation. This evolution is illustrated in qualitative interviews with hunting magazine editors and hunting photographers in Sweden, as well as review of 320 hunting magazine covers from 1960s to today. To this new class of hunter-artists, the presentation of the quarry as object or sovereign wildlife changes the hunting tableau and also responds to contested ideals of authenticity in nature.
Remoulding of Ideology through Remediation
Authors: Atashi Laleh
Published: March 2020

This article examines an intermedial adaptation, focusing on the potentials of two different media in the presentation of conflicting ideologies in Iran: Tabar (“Axe”) (1980, dir. Ahmad Arabani), a silent animation, and the picture book of the same title, by Shekoofeh Taqi and Manoochehr Dehqan, published in 1985. The two works have been chosen because they were both published at a time when Iran was tackling serious internal and external tensions after the Islamic Revolution. The ideological content of both the picture book and the animation can shed light on the discourse of didacticism that prevailed in Iran during the 1980s. Both works feature deforestation as a threat, but patriotism is the theme of the animation, whereas female resistance against male oppression is the message of the picture book.
Politics of Symbolism: The Making of Birsa Munda’s Statue in Post-colonial Jharkhand, India
Authors: Ranjan Rahul
Published: March 2020

Birsa Munda, Adivasi leader (Indigenous people) led a rebellion at the end of the 19th century against the dikus (outsiders) popularly known as Birsa Ulgulan (tumult, rebellion). The movement targeted British officials, zamindars, and missionaries. One of the immediate effects of the movement emerged in the form of protectionary legislation (Chota Nagpur Tenancy Act) and later played an influential role in the making of Jharkhand. In the contemporary social and political landscape, the presence of Birsa Munda in the form of the built environment such as statue is indelible and offers an exciting opportunity to understand the new aesthetic turn. In particular, the author investigates two statues in Jharkhand. These statues that function as “sites of memory” play a significant role in political mobilisation and vote-bank politics. It also offers a possibility to understand the relationship between the state, elites and subalterns. The paper builds upon ethnographic materials collected during the fieldwork and devices a conceptual tool of “material-memory” to offer the specific role of Birsa’s memory as medium of doing memory politics.
Electrochemical and Density Functional Theory Studies of Alkyl Imidazoline on the Corrosion Inhibition of Carbon Steel in Sulfamic Acid Solutions
Authors: Tan Yitong , Chen Yaqiong , Yang Dong , Liu Xinxin , Li Xinzhou , Liao Qiangqiang
Published: March 2020

The corrosion inhibition effects of the 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazoline on simple steels were indagated in 8 wt.% NH2SO3H media using loss of weight and electrochemical methods in conjunction with adsorption and DFT researches.
The anti-corrosion effect of UHCI acquired from EIS study is great and the maximum anti-corrosion efficiency could reach 90.15%. The sorption of UHCI on simple steel conforms to the Langmuir sorption equation. The DFT studies reveal that UHCI is firmly chemisorbed upon the simple steel by
the Fe…O σ-type dative bonds and isolates the contact between simple steel and NH2SO3H, thus protecting simple steel from the corrosion of NH2SO3H.
Study on the Dislocation Density and Deformation Mechanism of Superalloy IC10 at 700 °C
Authors: Zhang Hongjian , Xiao Jianfeng , Cui Haitao , Wen Weidong
Published: March 2020

Superalloy IC10 is one of the materials used for hot section components of new generation aero engine. High temperature tensile tests are carried out for IC10 under different strains at 700 °C. The dislocation density increases with the increase of the strain. At early stage of
deformation (strain <3%), the motion of dislocation is mainly described as climbing and shearing. When the deformation further increases (strain <6%), cross slip of the screw dislocation is found and various microstructures, such as stacking faults, K-W locks and dislocation
dipoles are observed in IC10 superalloy. At last stage of deformation (fracture), many dislocations pile up at phase boundary, leading to the reorganization and redistribution of dislocations. The mechanical properties of IC10 alloy at 700 °C are mainly featured by strain hardening, which
is concerned to the increase of dislocation density, and to the microstructure of dislocation cell, stacking fault and K-W lock. Finally, the dislocation density is used in the constitutive model to describe the flow behavior of IC10 alloy at 700 °C.
NdFe2O4 Nanoparticles: Synthesis, Characterization, and Magnetic Properties
Authors: Song Xiao-Lei , Wu Yi-Lin , Zhang Si-Ran , Chen Zhi , Li Yong-Gui
Published: March 2020

Multi-structured NdFe2O4 magnetic nanoparticles (NPs) were successfully prepared at different reaction times through a convenient solvothermal method. The microstructure and elemental composition of the NPs were characterized using powder X-ray diffraction (XRD)
and X-ray photoelectron spectroscopy (XPS) technique. An energy dispersive spectrometer (EDS) was connected to a scanning electron microscope to determine the weight and atomic percent of the prepared products. Subsequently, high-resolution transmission electron microscopy (HR/TEM) and TEM
were performed at 3, 7, 11, and 15 h to elucidate the synthetic mechanism of the rare-earth element Nd doped in Fe3O4. The magnetic activities of the NPs were evaluated using a vibrating sample magnetometer (VSM). XRD, EDS, and XPS analyses show that Nd was successfully
doped into Fe3O4 without breaking its crystal structure. Procedural single-crystal nanosheets and final spherical particles of NdFe2O4 were verified by TEM. The magnetic parameters of the products were further analyzed using the VSM.
Research on the Effects of Roughness on the Tactile Properties of Rice Straw Particleboard Surface
Authors: Xiong Xian-Qing , Yuan Ying-Ying , Niu Yi-Ting , Zhang Liang-Ting
Published: March 2020

To explore the effects of roughness on the tactile properties of rice straw particleboard (RSP), the surface roughness and psychological tactile and visual experiments were conducted for RSP substrates with 0.76 g/cm3 and 0.55 g/cm3 densities after sanding with
sandpaper (mesh 180#, 360#, and 600#). The effects of different sandpaper types, sanding time, and density of RSP on the surface roughness were analyzed. The experimental results are as follows. The sanding treatment had significant influence on the surface
roughness characterization parameters Ra and Rpv of the RSP specimens. Surface roughness differences between the 180# and 360# mesh-prepared samples were obvious. The tactile and visual psychological values of the 360# and
600# mesh-sanded specimens were higher, and the psychological quantities of untreated and 180# mesh-sanded specimens were lower. After comparing the samples with sanding treatment of sandpaper 0∼180#, the change in surface roughness of RSP with a density
of 0.76 g/cm3 was smaller than that of the specimen with a density of 0.55 g/cm3. The psychological quantity difference of RSP specimens with a density of 0.55 g/cm3 was evident. When the sanding time was 1 min., the values of the roughness characterization
parameters Ra and Rpv increased slightly. After 3 min. sanding, the Ra and Rpv values stabilized. When the sanding time was 5 min, the roughness was essentially unchanged. With the change in sanding time, the measured
values of the tactile psychological quantity varied greatly and the measured values of the visual psychology were very close. For the RSP substrates with higher density, the surface roughness was less after sanding with a smoother surface and better tactile properties. There were significant
differences between the surface roughness of the RSPs before and after sanding. After manual sanding over the same time span, the surface roughness evaluation parameter values decreased with an increase of mesh size of the sandpaper, and the tactile properties were improved. The longer the
sanding time, the smaller the difference in the surface roughness parameter values, and the smaller the difference between the tactile psychological quantity and the visual psychological quantity. To expand the research scope of RSP products, this study investigates not only the physical and
chemical properties but also the subjective feelings when using the RSP products. This will provide analytical methods and design guidelines for the consideration of environmental factors in furniture and interior design.
Preparation and Characterization of Bacterial Nanocellulose-Based Composite Membranes
Authors: Ju Si-Yi , Yu Hai-Long , Ji Li , Wang Kun , Jiang Jian-Xin
Published: March 2020

This study has been carried out to design environment friendly membranes prepared by an immersion method with bacterial nanocellulose (BNC) as a template, and chitosan (Ch) and poly(vinyl alcohol) (PVA) as functional entities for high bacteriostasis and hydrophilicity, respectively.
The BNC-Ch0.5-PVA membranes have more pronounced pores and looser three-dimensional structure than those of BNC, and the surfaces of the composites prepared with more Ch obviously became flatter and denser, observed using a scanning electron microscope. The Young's modulus and tensile
strength of wet composite membranes decreased following Ch and PVA incorporation. Lower thermal stability and crystallinity index of composite membranes were observed than those of BNC. The composite BNC-Ch0.5-PVA2 membranes possessed much better hydrophilicity than pure
BNC. The composites exhibited noteworthy antibacterial properties against Escherichia coli and Staphylococcus aureus compared to pure BNC which has no antibacterial ability. These results indicate that BNC-based composite membranes show excellent performance, especially a remarkable
swelling capacity and bacteriostatic ability, and are claimed to be effective in various applications such as medical treatment as a wound dressing.
Strengthening Mechanisms and Tribological Properties of Ultra-Hard AlMgB14 Based Composite Reinforced with TiB2
Authors: Liu Wen , Hao Chun-Yan , Zhao Xu-Dong , Wang Xiang-Jun , Shi Guo-Liang
Published: March 2020

AlMgB14–TiB2 composites with ideal structures are successfully prepared by field activated and pressure assisted synthesis. The effects of different TiB2 contents on the relative hardness and toughness of the composites were investigated. The results
showed adding TiB2 could both increase the hardness of AlMgB14 and improve the fracture toughness. The TiB2 contributed more to the hardness than to the toughness. The microstructure analysis shows that the main toughening mechanisms of AlMgB14–TiB2
composites are hard phase dispersion strengthening, high-strength interface bonding and the high elastic modulus of TiB2. Therefore, reducing the particle size of TiB2 to nanoscale is an efficient way to improve the toughness and hardness. The results of friction and
wear experiment at room temperature have shown that the addition of TiB2 into AlMgB14 enhances the abrasion–resistant property.
Preparation of Expanded Graphite and Fly Ash Base High Temperature Compound Phase Transition Heat Absorption Material and Its Application in Building Temperature Regulation
Authors: Huo Zhipeng , Bai Yuan , Li Xiangyu
Published: March 2020

In this study, the product substance was pretreated with coal excrement as a raw product substance. Taking expanded graphite and paraffin as phase change product substances, expanded graphite and paraffin or coal excrement base high temperature compound phase transition thermal storage
product substance were prepared by mixed sintering method. Firstly, the sintering mechanism of the composite should be deduced. In addition, XRD, TG-DSC and other analytical techniques were used to characterize the morphology and physical character of the product substances. In order to test
the temperature regulation ability of the product substance, the composite product substance was fused with cement. The cement block added with composite product substance was taken as the research object, verify the performance of compound phase transition product substance on temperature
regulation. In the experimental procedure, when phase change product substances' the proportion was less than 60%, the high temperature compound phase transition thermal storage product substances prepared were well-formed and had good crystallography, and the green body' various tissues were
densely distributed. When the paraffin content was above 35 wt%, the external density, compressive strength, and cement blocks' thermal conductivity added with composite product substances increased significantly compared with ordinary expanded perlite cement blocks, which was suitable for
building product substances' requirements. When the paraffin content reached 38 wt%, a temperature difference of 19.2 °C to 26.1 °C appeared in the composite product substance' corresponding cube space, indicating that room temperature can be adjusted by adding a certain phase change
product substance.
Diagnosis of Oral Squamous Cell Carcinoma (OSCC) Using Laser Induced Fluorescence
Authors: Razvi M. A. N. , Bakry Ahmed , Saeed A. , Afzal S. M. , AL-Hadeethi Y. F. , AL-Maghrabi Jaudah , AL-Muhayawi Saad
Published: March 2020

Cancer is a dreaded disease; a large number of deaths occur every year due to this disease. Oral squamous cell carcinoma (OSCC) is the most common cancer of the head and neck, which is approximately 16% to 40% of all malignancies. In this study, Laser induced fluorescence (LIF) spectroscopy
has been utilized to discriminate OSCC against healthy (normal) tissues and to investigate whether the LIF could provide information from formalin-fixed paraffin-embedded (FFPE) tissue samples similar to that reported using fresh tissues. Samples were prepared after biopsy from ten patients
using standard FFPE tissues methods. LIF system consists of a continuous wave (CW) He–Cd laser at 325 nm, a seven-core optical fiber cable coupled to the laser, a spectrometer with cooled charge coupled device (CCD) detector, and a computer for acquisition of the LIF spectra. Spectra
were decomposed using second derivative and curve fitting analysis to reveal the changes in molecular composition of the samples. Moreover, samples spectra were discriminated by hierarchical cluster analysis (HCA) and principal components analysis (PCA). Spectral results showed differences
in peak areas and positions between normal and OSCC tissues. LIF spectroscopy revealed significant decrease in the peak area of collagen and decrease in peak area of coenzymes of OSCC tissues. In addition, significant shift in the peak position of coenzymes was recorded. HCA and PCA of LIF
indicated a very clear discrimination of the normal and FFPE-OSCC tissues. The achieved discrimination between elliptic polygons of normal and OSCC tissues was 96.3% by PCA. This study confirms that the LIF spectroscopy is a good diagnostic tool for OSCC and it could be used with samples that
are prepared using FFPE tissues methods.
An Experimental Analysis of Composite Nursing Material of Degradable Magnesium/Polylactic Acid in the Treatment of Postoperative Pain After Orthopedic Surgery
Authors: Feng Yongli , Yu Li , Liu Yanjie , Wu Xiaoyuan , Wang Ying , Cheng Xiaoguang , Sun Yuyan
Published: March 2020

In this study, magnesium is used as the modified material of polylactic acid (PLA). In the process of combining magnesium and PLA, the magnesium powder is pre-treated with fluorine conversion, that is, the surface of the magnesium powder would form a fluoride membrane, and then it is
compounded with PLA to form Mg-F-PA. In the experiment, the morphology of the material is analyzed first. Magnesium powder and magnesium fluoride powder are evenly dispersed on the surface of the composite material, and the surface of the composite material is relatively flat. At the same
time, it is found in the mechanical analysis that the mechanical strength of composite Mg-F-PA decreases compared with that of single PLA, but the binding force of magnesium fluoride powder + PLA is stronger than that of magnesium powder + PLA. 120 patients with lower extremity fractures of
ASA I∼III are selected and divided into 4 groups, with 30 cases in each group. These patients are treated with hip replacement (group 1), artificial femoral head replacement (group 2), open reduction and internal fixation for lower limb fractures (group 3), open reduction and internal
fixation for lower limb fractures + Mg-F-PA (group 4). Then, postoperative evaluation is conducted. The clinical results show that the group 4 is better than the other 3 groups in terms of the sedation degree score, the number of pain pump presses and the incidence of postoperative adverse
reactions (P < 0.05). Therefore, the orthopedic material that proposed in this study can reduce postoperative pain.
The Adaptive Expertise of Expert ELT Textbook Writers
Authors: Atkinson Dawn
Published: March 2020

Although the ELT (English Language Teaching) materials development literature points to the influence of classroom experience on materials design, the literature is less specific about how such experience affects skilled textbook writing. Drawing primarily upon concurrent verbalization and pre- and post-concurrent verbalization interview data collected from two expert ELT textbook writers as they produced coursebook content, this study finds the participants tapped their English language teaching and teacher training experience – with experience operationalized here as knowledge and skills developed as a result of time and effort spent operating in a domain – during writing episodes when using problem-solving skills, navigating constraints, applying pedagogical reasoning skills, and engaging repertoire. The participants, in other words, were able to effect transfer from the neighbouring domains of English language teaching and teacher training to the expertise domain of ELT textbook writing, demonstrating adaptive expertise. This study demonstrates the usefulness of collecting data while participants are writing to discover how transfer effects and adaptive expertise are realized in real-time work and thus makes an important contribution to the research field of materials development. In addition, the results of this study may benefit teachers who look to textbooks for guidance as they develop pedagogic confidence.
Professional quality of life as potential mediators of the association between anxiety and depression among Chinese health-care clinicians
Authors: Xie Guojun , Li Wendy , McDermott Brett
Published: March 2020

Objective

Building upon the tripartite model of anxiety and depression, the current study aims to examine mechanisms of comorbidity between anxiety and depression using the ProQOL (Professional Quality of Life; including the constructs of burnout, secondary traumatic stress, and compassion satisfaction) in a sample of Chinese health-care clinicians.

Method

A randomized cross-sectional survey was distributed to 1620 participants who were recruited from eight state-owned hospitals in a city in southern China between January and May 2017. A total of 1562 questionnaires were returned (a response rate of 96.4%). After the cases with more than 10% missing variables and multivariate outliers being removed, 1423 valid cases remained. Multiple mediator models were used for mediation analysis that was conducted using the PROCESS v3.1 macro for SPSS.

Results

The indirect effects of anxiety upon depression through burnout (a1 = . 601 (95% confidence interval (CI): .552, .650), p < .001; b1 = .137 (95% CI: .101, .174), p < .001) and compassion satisfaction (a3= −.297 (95% CI: −.352, −.241), p < .001; b3 = −.069 (95% CI: −.100, −.039), p < .001) were significant, while there was no evidence that anxiety influenced depression by changing secondary traumatic stress. The indirect effects of depression upon anxiety through secondary traumatic stress (a2 = . 535 (95% CI: .483, .588), p < .001); b2 = .154 (95% CI: .120, .188), p < .001) were both positive and significant, while there was no evidence that depression influenced anxiety by changing burnout and compassion satisfaction.

Conclusions

In the current sample, burnout and compassion satisfaction mediated the effect of anxiety upon depression and secondary traumatic stress mediated the effect of depression upon anxiety. The findings of the current study offer support to the tripartite model.
Associations between appetitive traits, dietary patterns and weight status of children attending the School Kids Intervention Program
Authors: Jani Rati , Agarwal Cathy K , Golley Pip , Shanyar Nicola , Mallan Kimberley , Chipchase Lucy
Published: March 2020

Background:

The nexus between appetitive traits, dietary patterns and weight status has predominantly been studied in a mixed sample (healthy weight, overweight and obese sample).

Aim:

This cross-sectional study examined associations between overweight/obese children’s appetitive traits, dietary patterns and weight status.

Methods:

We studied children ( N = 58, body mass index z-score: 2.25±0.46), 4–12 years attending the School Kids Intervention Program. Children’s appetitive traits and dietary patterns were measured with the Child Eating Behaviour Questionnaire and Children’s Dietary Questionnaire, respectively. Children’s height and weight were used to compute body mass index z-score; waist circumference was also measured and waist-to-height ratio was calculated.

Results:

After controlling for children’s age and gender, hierarchical linear regression analyses showed that lower scores for slowness in eating were associated with higher body mass index z-scores in children (β = −0.31, p = 0.01). Higher scores for emotional overeating were associated with higher waist-to-height ratio in children (β = 0.48, p = 0.01). Higher scores for fussiness were correlated with lower scores for fruits and vegetables (β = −0.59, p < 0.001) and higher scores for non-core foods (β = 0.26, p = 0.04).

Conclusion:

Results observed in the current sample of overweight and obese children are consistent with previous studies examining healthy-weight children. Slowness in eating may foster an obesity ‘protective’ effect, whereas emotional overeating may promote susceptibility to weight gain. Fussy eating may impair diet quality by lower consumption of vegetables and fruits and higher intake of non-core foods. This evidence will support dietitians to consider children’s appetitive traits when providing dietary consultation to support obesity management among overweight/obese children.
Look Who Is Talking … and Who Is Listening: Finding an Integrative “We” Voice in Entrepreneurial Scholarship
Authors: Dimov Dimo , Schaefer Reiner , Pistrui Joseph
Published: March 2020

This paper explores the relationship between the study of entrepreneurs and the entrepreneurs we study. While scholars typically adopt a detached, third-person stance for the purpose of explaining and predicting entrepreneurial action, entrepreneurs instead operate in a first-person stance of deciding what to do. The two stances cannot be reduced to one another. We argue that an engaged dialog—a second-person stance—can bring scholars and entrepreneurs together into a unifying practical decision-making perspective. By working to develop this integrative voice in scholarship, we can collapse the dualism of rigor and relevance.
China’s world view in the Xi Jinping Era: Where do Japan, Russia and the USA fit?
Authors: Foot Rosemary , King Amy
Published: March 2020

A ‘world view’ perspective is deployed to show President Xi Jinping’s dominance of China’s policy-making environment and the ideas that he and his leadership group have tried to promote. We use this framework to explain China’s relations with three major countries that are crucial to manage successfully in order for China to consolidate its global and regional ambitions – Japan, Russia and the United States. The article shows how the degree of alignment between China’s and these great powers’ world views influences their levels of resistance or acceptance of the policies that flow from Beijing’s world view. We find that, while the United States and Russia lie at opposing ends of the resistance-acceptance spectrum, Japan represents an important middle ground along it. This finding encourages movement away from the overly simplistic dyadic depictions of global politics associated with ‘new Cold War’ or ‘authoritarian versus liberal’ labelling.
Is First-Gen an Identity? How First-Generation College Students Make Meaning of Institutional and Familial Constructions of Self
Authors: Bettencourt Genia M. , Mansour Koboul E. , Hedayet Mujtaba , Feraud-King Patricia Tita , Stephens Kat J. , Tejada Miguel M. , Kimball Ezekiel
Published: March 2020

Institutions increasingly use first-generation categorizations to provide support to students. In this study, we sought to understand how students make meaning of their first-generation status by conducting a series of focus groups with 54 participants. Our findings reveal that students saw first-generation status as an organizational and familial identity rather than social identities. This status was connected to alterity and social distance that was most salient in comparison to continuing-generation peers. Our recommendations include reexamining the role of first-generation-specific programming on campus, creating opportunities for meaning-making, supporting students within changing family dynamics, and exploring the interaction between first-generation status and other marginalized identities.