bluuebunny/crossref_metadata_2025_split huggingface dataset:
Laser deposition‐additive manufacturing of Ti–B/TiC ceramics reinforced microlaminates
Authors: Li Jianing , Zhao Zhongkui , Wang Xiaolin , Xu Shubo 
Published: January 2019

AbstractTi‐B/TiC ceramics reinforced microlaminates were fabricated by a laser cladding (LC) technique on the TC17 titanium alloy substrate made by the laser deposition‐additive manufacturing technique. The Stellite 7‐B4C mixed powders were used to produce a bottom‐layer; then the Stellite 7‐B4C‐Al‐Cu‐Mn mixed powders were deposited on this bottom‐layer to produce an upper‐layer. With the addition of Al‐Cu‐Mn mixed powders, the AlCu2Mn UNs with a L21 (face‐centered cubic system) structure were produced in an upper‐layer, which increased the free energy of the crystal boundaries, and this can increase the density of the point defects, resulting in the lattice distortions. The identification of the AlCu2Mn UNs in the laser‐treated composites contributes theoretical and experimental basis to improve the quality of the laser 3D print materials . To have a quantitative understanding of the strengthening effects, this paper has provided the laser‐induced technological and the related theoretical basis to fabricate the ultrafine nanocrystals (UNs) modified microlaminates on the metal.
Tailoring the photoluminescent properties of samarium and dysprosium codoped calcium zirconate perovskites for WLED applications
Authors: Venugopal Meenu , Padma Kumar Hariharan , Satheesh Ramachandran , Jayakrishnan Ramakrishnan 
Published: January 2019

AbstractThis study investigates the photoluminescent properties of Dy3+/Sm3+ single and codoped CaZrO3perovskites that were prepared through conventional solid state ceramic route method. X‐ray diffraction studies confirmed the orthorhombic (Pnma) perovskite structure of the calcined samples. Photoluminescence studies of Dy3+doped CaZrO3 systems showed emission peaks at 484 nm and 575 nm due to the transition between 4F9/2–6H15/2 and 4F9/2–6H13/2 levels respectively. Intense red emissions were observed for Sm3+ doped CaZrO3 systems at around 567 nm, 603 and 646 nm that corresponds to the 4G5/2 → 6H5/2, 4G5/2 → 6H7/2 and 4G5/2 → 6H9/2 transitions of Sm3+. Two different emissions were observed at different excitations for Dy3+/Sm3+ codoped CaZrO3systems. Pleasant white light emission was achieved for the CaZr0.9Sm0.025Dy0.075O3 system at 354 nm excitation with CIE color coordinates (0.3310, 0.3349) with a quantum yield of 16.14%, makes this system a promising candidate for WLED and display device applications. Uniform grain morphology and elemental composition of CaZr0.9Sm0.025Dy0.075O3 sample was revealed from scanning electron microscopic and electron dispersive X‐ray analysis. The presence of elements and their oxidation states in the calcined samples for doubly doped system was confirmed from X‐Ray photoelectron spectroscopicstudies.
The anthelmintic drug praziquantel promotes human Tr1 differentiation
Authors: Eyoh Enwono , McCallum Patrick , Killick Justin , Amanfo Seth , Mutapi Francisca , Astier Anne L 
Published: January 2019

AbstractPraziquantel (PZQ) is an anthelminthic human and veterinary drug used to treat trematode and cestode worms. Changes in immune responses have been demonstrated in humans following curative PZQ treatment of schistosome infections. These changes have been attributed to the removal of immunosupressive worms and immune responses to parasite antigens exposed from dying worms. To date, there has been no study investigating the potential direct effect of PZQ on the host immune cells. Herein, we analyzed the effect of PZQ on human CD4+ T cells classically costimulated by CD3/CD28 or costimulated by the complement regulator CD46 to induce Type 1 regulatory T cells (Tr1). Our results show that PZQ enhanced T‐cell proliferation, increased secretion of IL‐17 and IL‐10 but had no effect on secretion of GM‐CSF or IFNγ. Moreover, PZQ increased the coexpression of CD49b and LAG‐3, a hallmark of Tr1 cells, suggesting increased Tr1 differentiation. Indeed, supernatants from PZQ‐treated cells were able to decrease bystander T‐cell activation, and this was partly reduced when blocking IL‐10. Hence, our study demonstrates that PZQ directly modulates human T‐cell activation and promotes Tr1 differentiation, suggesting that PZQ may have immunomodulatory functions in parasite‐unrelated human inflammatory diseases.
Social comparisons, social media addiction, and social interaction: An examination of specific social media behaviors related to major depressive disorder in a millennial population
Authors: Robinson Anthony , Bonnette Aaron , Howard Krista , Ceballos Natalie , Dailey Stephanie , Lu Yongmei , Grimes Tom 
Published: January 2019

AbstractAlthough studies have shown that increases in the frequency of social media use may be associated with increases in depressive symptoms of individuals with depression, the current study aimed to identify specific social media behaviors related to major depressive disorder (MDD). Millennials (N = 504) who actively use Facebook, Twitter, Instagram, and/or Snapchat participated in an online survey assessing major depression and specific social media behaviors. Univariate and multivariate analyses were conducted to identify specific social media behaviors associated with the presence of MDD. The results identified five key social media factors associated with MDD. Individuals who were more likely to compare themselves to others better off than they were (p = 0.005), those who indicated that they would be more bothered by being tagged in unflattering pictures (p = 0.011), and those less likely to post pictures of themselves along with other people (p = 0.015) were more likely to meet the criteria for MDD. Participants following 300 + Twitter accounts were less likely to have MDD (p = 0.041), and those with higher scores on the Social Media Addiction scale were significantly more likely to meet the criteria for MDD (p = 0.031). Participating in negative social media behaviors is associated with a higher likelihood of having MDD. Research and clinical implications are considered.
Preparation of Mn2+‐Cu+ co‐doped P2O5–ZnO–Al2O3 glasses and their red fluorescence properties
Authors: Wada Noriyuki , Hanai Jyoji , Furukawa Mikiya , Kojima Kazuo 
Published: January 2019

AbstractTo make a Mn2+‐doped red glass phosphor that can be excited with ultraviolet (UV) light of light‐emitting diodes (LEDs), 60P2O5‐35ZnO‐5Al2O3‐8MnO‐xCu2O glasses (x = 0‐1.00) were prepared by a melt‐quenching method at 1200‐1400°C for 30‐180 minutes in atmospheric air, and the redox of Mn and Cu as well as fluorescence properties were investigated. The Mn2+ ion was not reduced and oxidized in the melting, quenching, and annealing processes. The valence of Cu in the glasses changed in the order of 0, 1+, and 2+ with the increase in the amount of Cu2O and in the melting temperature and time. In this study, a 60P2O5‐35ZnO‐5Al2O3‐8MnO‐0.10Cu2O glass melted at 1250°C for 90 minutes, having the highest Cu+ concentration, showed the strongest Mn2+ red fluorescence under the UV light at 275 nm. This strong Mn2+ red fluorescence has been caused by the energy transfer from excited Cu+ ions to Mn2+ ions.
A theory of multihoming in rideshare competition
Authors: Bryan Kevin A. , Gans Joshua S. 
Published: January 2019

AbstractWe examine competition among ridesharing platforms, where firms compete on both price and the wait time induced with idled drivers. We show that when consumers are the only agents who multihome, idleness is lower in duopoly than when consumers face a monopoly ridesharing platform. When drivers and consumers multihome, idleness further falls to zero as it involves costs for each platform that are appropriated, in part, by their rival. Interestingly, socially superior outcomes may involve monopoly or competition under various multihoming regimes, depending on the density of the city, and the relative costs of idleness versus consumer disutility of waiting.
Investigation of mecA gene, virulence traits and antibiotic resistance profiles in methicillin‐resistant Staphylococcus aureus isolates from dairy products
Authors: Elal Mus Tulay , Cetinkaya Figen , Karahan Hasan , Gurbuz Ismail Bulent , Degirmenci Gokhan 
Published: January 2019

AbstractThis study was performed to determine the prevalence of methicillin‐resistant Staphylococcus aureus (MRSA) in raw milk and dairy products and the presence of virulence traits in the isolates obtained and to assess their resistance to several antibiotics. MRSA was detected by CHROMagar MRSA II in 148 (22.8%) of 650 samples. Ninety‐eight isolates were confirmed as MRSA, 86 of these isolates were phenotype‐positive, 9 were phenotype/mecA‐positive, and 3 were phenotype‐negative but mecA‐positive. However, the virulence genes were not found in any MRSA strains. According to the results of antibiotic susceptibility tests, 100, 44.9, and 29.6% of strains were resistant to penicillin, tetracycline, and clindamycin, respectively. A low prevalence (1.02%) of resistance was observed against vancomycin and chloramphenicol antibiotics. Furthermore, multidrug resistance was seen among MRSA strains isolated from cheese, butter and buttercream samples. In contrast with other studies, we identified a high‐level vancomycin‐resistant MRSA strain in one buttercream sample and the intermediate‐level vancomycin resistance in six different multiple‐resistant MRSA strains from food of dairy origin.Practical applicationsRecently, MRSA has been isolated from foods of animal origin and become one of the rising public health concerns worldwide. This study focused on the prevalence of MRSA in raw milk and dairy products, the presence of genes encoding virulence factors that allow it to cause the disease and their antibiotic susceptibility patterns. Consequently, we revealed the emergence of resistance to vancomycin and multiple antibiotics among MRSA strains. The isolation of high‐level vancomycin‐resistant MRSA strain is an important finding because vancomycin continues to be the first‐line treatment agent for MRSA infections.
Evaluation of wheat kernels infected by fungi of the genus Fusarium based on morphological features
Authors: Ropelewska Ewa 
Published: January 2019

AbstractThe aim of this study was to propose a nondestructive method for evaluating wheat kernels infected by fungi of the genus Fusarium based on the morphological features of kernels and for distinguishing infected kernels from healthy kernels. Images were acquired with a flatbed scanner to determine 59 geometric parameters (linear dimensions and shape factors). Wheat kernels were classified as infected or healthy with the use of Decision trees, Rules, Bayes, Lazy, Meta, and Functions classifiers in WEKA 3.9 software. The classification accuracy of the model based on 59 attributes ranged from 58.12% to 73.37%. The selection of the best attributes shortened the time of the analysis and improved classification results. Linear Forward Selection and MLP classifiers were characterized by the highest classification accuracy.Practical applicationsThe infection of cereal grains by fungi of the genus Fusarium is a food security challenge that can compromise the quantity and quality of yields in many agricultural regions. Selected fungi produce mycotoxins with carcinogenic, mutagenic, teratogenic, and immunotoxic effects for humans and animals. In this study, a nondestructive method was applied to evaluate wheat kernels infected by fungi of the genus Fusarium based on the morphological features of kernels and to distinguish infected kernels from healthy kernels. The proposed method can be used for rapid, inexpensive, and effective detection of fungal infections in cereal grain.
Comparison of real‐time PCR and cultural method for detection of bacterial load in pasteurized milk
Authors: Farhoudi Ayda , Ghajarbeygi Peyman , Jozani Razi Allah Jafari , Mahmoudi Razzagh , Mardani Karim 
Published: January 2019

AbstractIn this study, we used a TaqMan® probes through the real‐time polymerase chain reaction (PCR) technique as a rapid and sensitive way to detect bacterial load of pasteurized milk. The reaction was optimized for enumeration of bacteria in pasteurized milk samples. In parallel, the same milk samples were assessed by conventional cultural‐based method. The correlation between methods was evaluated by Bland Altman analysis. The minimum and maximum value for conventional culture‐based method were 0 and 10,000 cfu/ml while qPCR gave us 55 and 7,071 (Bacteria/ml of pasteurized milk), respectively. Results indicated that Taq Man real‐time PCR provides a useful tool for rapid and accurate quantification of bacterial load.Practical applicationsDairy industries are required to determine total bacterial load in farmer's raw milk before collection based on legal standard methods for microbial detection. Moreover, the result of total bacterial counting is the major pricing criterion of raw milk. Despite the storage of raw milk from large farms in separate tanks, raw milk from small‐ and medium‐size farms are mixed in other tanks resulting in total bacterial load alteration. Traditional cultural‐based methods are common to determine total bacterial load in raw milk. However, these techniques are laborious and time‐consuming. Recent molecular‐based methods are easily applicable to ensure that perishable raw milk could be monitored precisely under national rules and legislation in the shortest possible time. This report provides the details of a TaqMan real‐time PCR (qPCR) that can be used in factory sites for accurate monitoring of raw milk bacterial load before transferring the raw milk into pasteurization line.
In vitro antibacterial activity of Pimpinella anisum essential oil and its influence on microbial, chemical, and sensorial properties of minced beef during refrigerated storage
Authors: Khanjari Ali , Bahonar Alireza , Noori Negin , Siahkalmahaleh Mahsa Rahimi , Rezaeigolestani Mohammadreza , Asgarian Zahra , Khanjari Javad 
Published: January 2019

AbstractIn this study, the antibacterial properties of Pimpinella anisum essential oil (PAO) were evaluated against six food‐related bacteria. Afterward, the effects of different concentrations of PAO on microbial, chemical, and organoleptic properties of minced beef were evaluated during refrigerated storage. Based on the findings, PAO was effective against all of the tested strains, where minimum inhibitory concentration of Listeria monocytogenes was 0.015% (v/v) and this value was 0.12% (v/v) for Vibrio parahaemolyticus and Salmonella typhimurium. At the end of storage time, the microbial population of samples treated with 0.5% v/w PAO was decreased approximately 1–2 log CFU/g compared to control (p < 0.05). The evolution pattern of total volatile basic nitrogen and peroxide value during storage revealed that the best results were related to the samples treated with higher percentages of PAO (0.3 and 0.5%v/w). The findings of this study suggest significant potential of PAO in improving the shelf life of meat products.Practical applicationsResults of this study revealed that Pimpinella anisum essential oil has activity against both gram‐positive and gram‐negative bacterial strains and also have a high potential to be applied as a natural preservative to enhance the safety and shelf life of meat products.
Influence of psychological stress exposure on orthodontic therapy: A comprehensive review
Authors: Al‐Shammery Deema , Michelogiannakis Dimitrios , Rossouw Emile , Romanos Georgios E. , Javed Fawad 
Published: January 2019

AbstractThe aim of the present study was to comprehensively review the influence of psychological stress exposure (PSE) on orthodontic therapy (OT). Original clinical and experimental studies were assessed. Quality assessment of experimental studies was performed using the Animal Research Reporting In Vivo Experiment (ARRIVE) guidelines. Six studies (2 clinical and 4 experimental) were included. One clinical study showed that PSE during OT significantly increases nickel release from orthodontic appliances into the saliva. In another study, maternal support was found to be an important predictor of the outcome of OT. In one experimental study, chronic PSE increased orthodontic tooth movement (OTM), and in two experimental studies, PSE decreased OTM. One study on rats reported that PSE is not a risk factor for orthodontically‐induced root resorption during OTM. One experimental study showed a significantly higher number of osteoclasts in the bone on the side of OTM in restrained rats compared with unrestrained rats. One study showed decreased osteoclast counts in the bone during OTM under PSE. The lowest, highest, and mean ARRIVE scores (out of 20) for the experimental studies were 16, 18, and 16.75 ± 0.96, respectively. The role of PSE in clinical orthodontics remains unclear, most likely due to a lack of studies in humans. Further power‐adjusted, well‐designed, and randomized studies are needed.
Postoperative pain control with ropivacaine following laparoscopic myomectomy: A randomized double‐blind, pilot study
Authors: Kwack Jae Young , Ahn Kwang Hee , Kwon Yong‐Soon 
Published: January 2019

AbstractAimThe aim of this study was to evaluate immediate pain control in patients who underwent laparoscopic myomectomy (LM) by intraoperative injection of ropivacaine into both uterosacral ligaments.MethodsThe study was a prospective, double‐blind, randomized study. We analyzed 46 cases of LM performed between July 2015 and November 2016 by a single surgeon. We randomized the enrolled patients into either a ropivacaine or a saline injection group. Before the surgeon closed the abdominal wall, each 7.5% ropivacaine (5 mL) or saline (5 mL) was administered into both uterosacral ligaments through laparoscopic injection needle. We compared the pain intensity scores 2, 6, 12, and 24 h after injection between the two groups.ResultsThe pain intensity scores were not significantly different. However, the ropivacaine group requested less of the analgesic than the placebo‐injected group requested (P = 0.035). No patient in the ropivacaine group reported any side effects.ConclusionIntraoperative ropivacaine injection into both uterosacral ligaments during LM can reduce the dosage of opioid analgesics.
A resources perspective on when and how proactive work behaviour leads to employee withdrawal
Authors: Pingel Ruta , Fay Doris , Urbach Tina 
Published: January 2019

Previous organizational behaviour research has mainly focused on the benefits of proactivity while disregarding its possible drawbacks. The present study examines the ways in which proactive behaviour may foster counterproductive behaviour through increased emotional and cognitive strain. Drawing on conservation of resources theory, we propose that proactive behaviour is a resource‐consuming activity that causes irritability and work‐related rumination, which, in turn, leads to instrumentally driven employee withdrawal. Further, we hypothesize that external motivation towards proactivity amplifies its strain‐eliciting effects. We conducted a longitudinal three‐wave questionnaire study (N = 231) and tested hypotheses using an autoregressive, time‐lagged model with latent variables. Results showed that when external motivation for proactivity was high, proactivity led to increased irritability and rumination; irritability was, in turn, related to higher levels of withdrawal. The moderated mediation analysis revealed that when external motivation towards proactive behaviour was high, proactive behaviour had an indirect effect on withdrawal behaviour via irritability. The direct effect of proactivity on work‐related rumination was in the expected direction, but failed to reach conventional levels of significance (β = .09, p = .08). Our results indicate that proactivity is not without costs, most clearly if motivated by external reasons.Practitioner points

Managers should be cautious about the ways they promote employees’ proactivity because our research shows that proactive behaviours that are motivated by a desire of external rewards, or an avoidance of negative consequences, might have detrimental effects on employees’ psychological well‐being.

Organizations should be aware that using rewards and punishments for motivating employees’ proactivity might not only backfire on employees’ well‐being, but also lead to increased counterproductive work behaviours in terms of withdrawal.
To Know and Be Known: An Intimacy‐Based Explanation for the Gender Gap in Biblical Literalism
Authors: Kent Blake Victor , Pieper Christopher M. 
Published: January 2019

AbstractWe assess the gender gap in U.S. Christianity by examining in a national sample (Baylor Religion Survey 2010) a particularly robust measure of religiosity: biblical literalism. Women are more likely to report biblical literalism than men in bivariate comparisons, but we argue that intimate attachment to God is a related intervening mechanism. The results of this study indicate: (1) intimate attachment to God is associated with more literal views of the Bible, (2) after accounting for attachment to God women are no longer associated with increased literalism, (3) divine proximity‐seeking behaviors are associated with more literal views of the Bible, (4) proximity‐seeking moderates the relationship between attachment to God and Bible views, and (5) gender moderates the relationship between both attachment to God and proximity‐seeking behaviors and Bible views. The evidence presented here provides a plausible mechanism by which gender differences in biblical literalism may be accounted for.
Visceral artery anomalies in patients with Alagille syndrome
Authors: Sanada Yukihiro , Naya Itsuki , Katano Takumi , Hirata Yuta , Yamada Naoya , Okada Noriki , Ihara Yoshiyuki , Onishi Yasuharu , Mizuta Koichi 
Published: January 2019

AbstractBackgroundIntracranial and pulmonary vascular anomalies are well‐known complications and causes of mortality in AGS; however, visceral artery anomalies are less commonly recognized. Herein, we present a retrospective analysis of our experience with pediatric LDLT that focuses on the current problems with and treatments for visceral artery anomalies in AGS after LDLT.MethodsBetween May 2001 and December 2017, 294 LDLTs were performed for 285 pediatric recipients. Of these, 13 LDLTs (4.4%) for 12 AGS patients were performed. We classified the visceral artery anomalies into aneurysms and stenosis.ResultsThe overall incidence of visceral aneurysm was 2 of 12 recipients (16.7%) and included a SMA aneurysm in one patient and an IPDA aneurysm with a subsequent SPA aneurysm in one patient; the ages of the diagnosis of visceral aneurysm were 16.3, 21.1, and 21.7 y, respectively. An endovascular treatment was performed for a progressive IPDA saccular aneurysm (12.0 × 14.5 × 15.0 mm). The overall incidence of visceral artery stenosis was 7 of 12 recipients (58.3%) and the median age at the diagnosis of visceral artery stenosis was 15.5 y (range 1.7‐22.9 y). All 3 AGS patients with RA stenosis suffered from renal dysfunction (eGFR of 51, 78, and 51 mL/min/1.73m2).ConclusionThe morbidity of visceral artery anomalies is not negligible. The performance of periodic imaging examinations is necessary, even for infants, because it is difficult to detect visceral vascular anomalies in the infant stage.
Reinforced urns and the subdistribution beta‐Stacy process prior for competing risks analysis
Authors: Arfé Andrea , Peluso Stefano , Muliere Pietro 
Published: January 2019

AbstractIn this paper, we introduce the subdistribution beta‐Stacy process, a novel Bayesian nonparametric process prior for subdistribution functions useful for the analysis of competing risks data. In particular, we (i) characterize this process from a predictive perspective by means of an urn model with reinforcement, (ii) show that it is conjugate with respect to right‐censored data, and (iii) highlight its relations with other prior processes for competing risks data. Additionally, we consider the subdistribution beta‐Stacy process prior in a nonparametric regression model for competing risks data, which, contrary to most others available in the literature, is not based on the proportional hazards assumption.