bluuebunny/crossref_metadata_2025 huggingface dataset:
Dementia at the End of Life and Family Partners: A Symbolic Interactionist Perspective on Communication
Authors: Johnson Christopher , Kelch Jordan , Johnson Roxanna
Published: July 2017

People with dementia are not dying; they are experiencing changes in the brain. This paper utilizes a symbolic interaction theoretical perspective to outline communicative alternatives to polypharmacy. There is a growing interest in sociological interventions to untangle the “disordered discourses” associated with dementia. Such practices challenge common stigmas attached to dementia as an “ongoing funeral” or “death certificate.” Changing the expectations, attitudes and communication patterns of family care partners can positively impact them and the person living with dementia at the end of life. This paper delineates multiple non-verbal communication interventions (e.g., the trip back in time, dementia citizenship and sensory engagement modalities) to explore techniques to engage persons with advanced dementia.
Integrin αvβ3 Signaling in Tumor-Induced Bone Disease
Authors: Kwakwa Kristin , Sterling Julie
Published: July 2017

Tumor-induced bone disease is common among patients with advanced solid cancers, especially those with breast, prostate, and lung malignancies. The tendency of these cancers to metastasize to bone and induce bone destruction is, in part, due to alterations in integrin expression and signaling. Substantial evidence from preclinical studies shows that increased expression of integrin αvβ3 in tumor cells promotes the metastatic and bone-invasive phenotype. Integrin αvβ3 mediates cell adhesion to several extracellular matrix proteins in the bone microenvironment which is necessary for tumor cell colonization as well as the transmission of mechanical signals for tumor progression. This review will discuss the αvβ3 integrin receptor in the context of tumor-induced bone disease. Specifically, the focus will be the role of αvβ3 in modulating cancer metastasis to bone and tumor cell response to the bone microenvironment, including downstream signaling pathways that contribute to tumor-induced osteolysis. A better understanding of integrin dysregulation in cancer is critical to developing new therapeutics for the prevention and treatment of bone metastases.
Element Strategy Using Ru-Mn Substitution in CuO-CaCu3Ru4O12 Composite Ceramics with High Electrical Conductivity
Authors: Tsuruta Akihiro , Mikami Masashi , Kinemuchi Yoshiaki , Terasaki Ichiro , Murayama Norimitsu , Shin Woosuck
Published: July 2017

CaCu3Ru4−xMnxO12 bulks with various substitution amounts x and sintering additive CuO (20 vol.%) were prepared, and the influence of x on the electrical conductivity in a wide temperature range (8–900 K) was investigated. Microstructural observations showed an enhancement of bulk densification upon Mn substitution. Although the resistivity increased with increasing x, the resistivity was as low as a few mΩcm even in the sample with x = 2.00, where half of Ru is substituted by Mn. This high conductivity despite the loss of Ru 4d conduction following the substitution is explained by the A-site (Cu2+) conduction in CaCu3Ru4−xMnxO12. The thermopower of CaCu3Ru4−xMnxO12 was found to be influenced by the substitution, and a sign inversion was observed in the substituted samples at low temperature. The partial substitution of Ru by Mn in CaCu3Ru4O12 enables the reduction of the materials cost while maintaining good electrical conductivity for applications as a conducting device component.
α-Connections and a Symmetric Cubic Form on a Riemannian Manifold
Authors: Uohashi Keiko
Published: July 2017

In this paper, we study the construction of α -conformally equivalent statistical manifolds for a given symmetric cubic form on a Riemannian manifold. In particular, we describe a method to obtain α -conformally equivalent connections from the relation between tensors and the symmetric cubic form.
NB-IoT for D2D-Enhanced Content Uploading with Social Trustworthiness in 5G Systems †
Authors: Militano Leonardo , Orsino Antonino , Araniti Giuseppe , Iera Antonio
Published: July 2017

Future fifth-generation (5G) cellular systems are set to give a strong boost to the large-scale deployment of Internet of things (IoT). In the view of a future converged 5G-IoT infrastructure, cellular IoT solutions such as narrowband IoT (NB-IoT) and device-to-device (D2D) communications are key technologies for supporting IoT scenarios and applications. However, some open issues still need careful investigation. An example is the risk of threats to privacy and security when IoT mobile services rely on D2D communications. To guarantee efficient and secure connections to IoT services involving exchange of sensitive data, reputation-based mechanisms to identify and avoid malicious devices are fast gaining ground. In order to tackle the presence of malicious nodes in the network, this paper introduces reliability and reputation notions to model the level of trust among devices engaged in an opportunistic hop-by-hop D2D-based content uploading scheme. To this end, social awareness of devices is considered as a means to enhance the identification of trustworthy nodes. A performance evaluation study shows that the negative effects due to malicious nodes can be drastically reduced by adopting the proposed solution. The performance metrics that proved to benefit from the proposed solution are data loss, energy consumption, and content uploading time.
Using Health Impact Assessment as an Interdisciplinary Teaching Tool
Authors: Chinchilla Melissa , Arcaya Mariana
Published: July 2017

Health Impact Assessment (HIA) courses are teaching public health and urban planning students how to assess the likely health effects of proposed policies, plans, and projects. We suggest that public health and urban planning have complimentary frameworks for training practitioners to address the living conditions that affect health. Planning perspectives emphasize practical skills for impacting community change, while public health stresses professional purpose and ethics. Frameworks from both disciplines can enhance the HIA learning experience by helping students tackle questions related to community impact, engagement, social justice, and ethics. We also propose that HIA community engagement processes can be enriched through an empathetic practice that focuses on greater personal introspection.
Vector-Circulant Matrices and Vector-Circulant Based Additive Codes over Finite Fields
Authors: Jitman Somphong
Published: July 2017

Circulant matrices have attracted interest due to their rich algebraic structures and various applications. In this paper, the concept of vector-circulant matrices over finite fields is studied as a generalization of circulant matrices. The algebraic characterization for such matrices has been discussed. As applications, constructions of vector-circulant based additive codes over finite fields have been given together with some examples of optimal additive codes over F 4 .
Mechanical Behavior of Stainless Steel Fiber-Reinforced Composites Exposed to Accelerated Corrosion
Authors: O’Brien Caitlin , McBride Amanda , E. Zaghi Arash , Burke Kelly , Hill Alex
Published: July 2017

Recent advancements in metal fibers have introduced a promising new type of stainless steel fiber with high stiffness, high failure strain, and a thickness < 100 μm (<0.00394 in.) that can be utilized in a steel fiber-reinforced polymer. However, stainless steel is known to be susceptible to pitting corrosion. The main goal of this study is to compare the impact of corrosion on the mechanical properties of steel fiber-reinforced composites with those of conventional types of stainless steel. By providing experimental evidences, this study may promote the application of steel fiber-reinforced composite as a viable alternative to conventional metals. Samples of steel fiber-reinforced polymer and four different types of stainless steel were subjected to 144 and 288 h of corrosion in ferric chloride solution to simulate accelerated corrosion conditions. The weight losses due to corrosion were recorded. The corroded and control samples were tested under monotonic tensile loading to measure the ultimate stresses and strains. The effect of corrosion on the mechanical properties of the different materials was evaluated. The digital image correlation (DIC) technique was used to investigate the failure mechanism of the corrosion-damaged specimens. Overall, steel fiber-reinforced composites had the greatest corrosion resistance.
Fracture Toughness and Elastic Modulus of Epoxy-Based Nanocomposites with Dopamine-Modified Nano-Fillers
Authors: Koh Kwang , Ji Xianbai , Dasari Aravind , Lu Xuehong , Lau Soo , Chen Zhong
Published: July 2017

This paper examines the effect of surface treatment and filler shape factor on the fracture toughness and elastic modulus of epoxy-based nanocomposite. Two forms of nanofillers, polydopamine-coated montmorillonite clay (D-clay) and polydopamine-coated carbon nanofibres (D-CNF) were investigated. It was found that Young’s modulus increases with increasing D-clay and D-CNF loading. However, the fracture toughness decreases with increased D-clay loading but increases with increased D-CNF loading. Explanations have been provided with the aid of fractographic analysis using electron microscope observations of the crack-filler interactions. Fractographic analysis suggests that although polydopamine provides a strong adhesion between the fillers and the matrix, leading to enhanced elastic stiffness, the enhancement prohibits energy release via secondary cracking, resulting in a decrease in fracture toughness. In contrast, 1D fibre is effective in increasing the energy dissipation during fracture through crack deflection, fibre debonding, fibre break, and pull-out.
Lattices and Rational Points
Authors: Viada Evelina
Published: July 2017

In this article, we show how to use the first and second Minkowski Theorems and some Diophantine geometry to bound explicitly the height of the points of rank N - 1 on transverse curves in E N , where E is an elliptic curve without Complex Multiplication (CM). We then apply our result to give a method for finding the rational points on such curves, when E has Q -rank ≤ N - 1 . We also give some explicit examples. This result generalises from rank 1 to rank N - 1 previous results of S. Checcoli, F. Veneziano and the author.
Characteristics of the Dynamic Recrystallization Behavior of Ti-45Al-8.5Nb-0.2W-0.2B-0.3Y Alloy during High Temperature Deformation
Authors: Xiang Lin , Tang Bin , Xue Xiangyi , Kou Hongchao , Li Jinshan
Published: July 2017

The dynamic recrystallization (DRX) behavior of Ti-45Al-8.5Nb-0.2W-0.2B-0.3Y (at %) alloy has been investigated through hot compression tests. The tests were executed at a temperature range of 1000–1200 °C and a strain rate range of 0.001–1 s−1 under a true strain of 0.9. It was found that the α2 phase which is produced during heat treatment is reduced during hot compression due to thermo-mechanical coupling. The value of the activation energy is 506.38 KJ/mol. With the increase in deformation temperature and the decrease in strain rate, DRX is more likely to occur, as a result of sufficient time and energy for the DRX process. Furthermore, the volume fraction of high angle grain boundaries increases to 89.01% at a temperature of 1200 °C and the strain rate of 0.001 s−1, meaning completely dynamic recrystallization. In addition, DRX is related to the formation of twin boundaries. The volume fraction of twin boundaries rises to 16.93% at the same condition of completely dynamic recrystallization.
Bainitic Transformation and Properties of Low Carbon Carbide-Free Bainitic Steels with Cr Addition
Authors: Zhou Mingxing , Xu Guang , Tian Junyu , Hu Haijiang , Yuan Qing
Published: July 2017

Two low carbon carbide-free bainitic steels (with and without Cr addition) were designed, and each steel was treated by two kinds of heat treatment procedure (austempering and continuous cooling). The effects of Cr addition on bainitic transformation, microstructure, and properties of low carbon bainitic steels were investigated by dilatometry, metallography, X-ray diffraction, and a tensile test. The results show that Cr addition hinders the isothermal bainitic transformation, and this effect is more significant at higher transformation temperatures. In addition, Cr addition increases the tensile strength and elongation simultaneously for austempering treatment at a lower temperature. However, when the austempering temperature is higher, the strength increases and the elongation obviously decreases by Cr addition, resulting in the decrease in the product of tensile strength and elongation. Meanwhile, the austempering temperature should be lower in Cr-added steel than that in Cr-free steel in order to obtain better comprehensive properties. Moreover, for the continuous cooling treatment in the present study, the product of tensile strength and elongation significantly decreases with Cr addition due to more amounts of martensite.
Dereplication-Guided Isolation of New Phenylpropanoid-Substituted Diglycosides from Cistanche salsa and Their Inhibitory Activity on NO Production in Macrophage
Authors: Ahn Jongmin , Chae Hee-Sung , Chin Young-Won , Kim Jinwoong
Published: July 2017

Dereplication allows for a rapid identification of known and unknown compounds in plant extracts. In this study, we performed liquid chromatography-mass spectroscopy (LC-MS)- based dereplication using data from ESI+ QTOF-MS for the analysis of phenylpropanoid-substituted diglycosides, the major active constituents of Cistanche salsa (C. A. Mey.) Beck. Using TOF-MS alone, the substructures of these compounds could be unambiguously confirmed based on the characteristic fragmentation patterns of various product ions. HPLC-MS based profiling of C. salsa also allowed for the detection of new phenylpropanoid-substituted diglycosides from this plant. Of them, five new phenylpropanoid-substituted diglycosides, named cistansalsides A–E (5, 6, 12, 17 and 18), were isolated. Their structures were elucidated through spectroscopic methods including NMR and MS analysis. All the isolates were tested for their inhibitory activity against NO production in RAW 264.7 cells stimulated by LPS. Of the tested compounds, compounds 5, 11, 13 and 18 showed moderate inhibitory activity on inducible NO synthase. Compounds 11, 13 and 18 also inhibited the phosphorylation of NF-κB in macrophages. None of the compounds displayed significant cytotoxicity.
Phenolics from Mikania micrantha and Their Antioxidant Activity
Authors: Dong Li-Mei , Jia Xu-Chao , Luo Qing-Wen , Zhang Qiang , Luo Bi , Liu Wen-Bin , Zhang Xu , Xu Qiao-Lin , Tan Jian-Wen
Published: July 2017

A phytochemical study on the aerial parts of Mikania micrantha led to the isolation of two new phenolic compounds, benzyl 5-O-β-d-glucopyranosyl-2,5-dihydroxybenzoate (1) and (7S,8R)-threo-dihydroxydehydrodiconiferyl alcohol 9-acetate (2), together with twelve known compounds, benzyl 2-O-β-d-glucopyranosyl-2,6-dihydroxybenzoate (3), 4-allyl-2,6-dimethoxyphenol glucoside (4), (+)-isolariciresinol (5), icariol A2 (6), 9,10-dihydroxythymol (7), 8,9,10-trihydroxythymol (8), caffeic acid (9), p-coumaric acid (10), ethyl protocatechuate (11), procatechuic aldehyde (12), 4-hydroxybenzoic acid (13), and hydroquinone (14). Their structures were elucidated on the basis of extensive spectroscopic analysis. Except 8 and 9, all the other compounds were isolated from this plant species for the first time. The antioxidant activity of those isolated compounds were evaluated using three different assays. Compounds 1, 2, 3, 9, 10, 13, and 14 demonstrated significant 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) free radical cation scavenging activity ranging from SC50 0.31 to 4.86 µM, which were more potent than l-ascorbic acid (SC50 = 10.48 µM). Compounds 5, 9, 11, and 12 exhibited more potent 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity (SC50 = 16.24–21.67 µM) than l-ascorbic acid (39.48 µM). Moreover, the ferric reducing antioxidant power (FRAP) of compounds 2, 5, 9, and 11 were discovered to be also comparable to or even more potent than l-ascorbic acid.
Engineering of a Potent Recombinant Lectin-Toxin Fusion Protein to Eliminate Human Pluripotent Stem Cells
Authors: Tateno Hiroaki , Minoshima Fumi , Saito Sayoko
Published: July 2017

The use of human pluripotent stem cells (hPSCs) such as human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSCs) in regenerative medicine is hindered by their tumorigenic potential. Previously, we developed a recombinant lectin-toxin fusion protein of the hPSC-specific lectin rBC2LCN, which has a 23 kDa catalytic domain (domain III) of Pseudomonas aeruginosa exotoxin A (rBC2LCN-PE23). This fusion protein could selectively eliminate hPSCs following its addition to the cell culture medium. Here we conjugated rBC2LCN lectin with a 38 kDa domain of exotoxin A containing domains Ib and II in addition to domain III (PE38). The developed rBC2LCN-PE38 fusion protein could eliminate 50% of 201B7 hPSCs at a concentration of 0.003 μg/mL (24 h incubation), representing an approximately 556-fold higher activity than rBC2LCN-PE23. Little or no effect on human fibroblasts, human mesenchymal stem cells, and hiPSC-derived hepatocytes was observed at concentrations lower than 1 μg/mL. Finally, we demonstrate that rBC2LCN-PE38 selectively eliminates hiPSCs from a mixed culture of hiPSCs and hiPSC-derived hepatocytes. Since rBC2LCN-PE38 can be prepared from soluble fractions of E. coli culture at a yield of 9 mg/L, rBC2LCN-PE38 represents a practical reagent to remove human pluripotent stem cells residing in cultured cells destined for transplantation.
Acute Supplementation with High Dose Vitamin D3 Increases Serum Anti-Müllerian Hormone in Young Women
Authors: Dennis Nicola , Houghton Lisa , Pankhurst Michael , Harper Michelle , McLennan Ian
Published: July 2017

Anti-Müllerian hormone (AMH) is a paracrine regulator of ovarian follicles. Vitamin D (Vit D) regulates AMH production in vitro, but its role as a regulator of ovarian AMH production is contentious. If Vit D influences ovarian AMH production, then an acute rise in Vit D level should lead to an acute rise in circulating AMH levels. This hypothesis was tested with a randomized double-blind design, with 18–25-year-old women recruited from the community. The study was conducted in early spring, when the marker of Vit D level (25-hydroxyvitamin D, 25(OH)D) tends to be at its nadir. The women consumed either an oral dose of 50,000 IU of Vit D3 (n = 27) or placebo (n = 22). The initial 25(OH)D ± SD value was 53.6 ± 23.3 nmol/L, with 42 of the 49 women having a value below 75 nmol/L, consistent with seasonal nadir. All women receiving Vit D3 treatment exhibited a robust increase in serum 25(OH)D within 1 day (15.8 ± 1.1 nmol/L (n = 27), p < 0.0001), with the increase sustained over the study week. Circulating levels of AMH in the women receiving Vit D3 progressively rose during the following week, with a mean increase of 12.9 ± 3.7% (n = 24, p = 0.001). The study supports the hypothesis that Vit D’s positive effects on the fertility of woman may involve the regulation of ovarian AMH levels.
Effective Removal of Chromium(III) from Low Concentration Aqueous Solution Using a Novel Diazene/Methoxy-Laced Coordination Polymer
Authors: Liu Lei-Lei , Xing Yun , Yu Hui-Ying , Zhang Cai-Wen , Ye Meng-Qi , Miao Ming-Zhen , Yu Cai-Xia
Published: July 2017

In this study, a novel coordination polymer [CdL2(H2O)0.5]n (1), [HL = 4-(2-(4-((pyridin-3-yl)methoxy)phenyl)diazenyl)benzoic acid] was fabricated via an in situ ligand transformation reaction under solvothermal conditions. The as-prepared polymer exhibited a selectivity and efficiency for Cr(III) removal with a high uptake capacity of 106.13 mg·g−1. Interestingly, even in the low concentration (0.02–0.20 ppm), it still performs a relatively high efficiency (≥ 92.5%) towards the removal of Cr(III) in aqueous solution. Remarkably, it also presents good selectivity and high efficiency (93.3%) for Cr(III) removal in the presences of interfering metal ions. The good removal performance for Cr(III) was demonstrated to be a structure-dependent chemical process between polymer and Cr(III) involving the diazene and methoxy groups in polymer 1, which happened not only on the surfaces of the adsorbent but also in the pores of polymer, giving rise to a strong affinity toward Cr(III) adsorption. The possible adsorption mechanism of Cr(III) was proposed and systematically verified by FT-IR, scanning electron microscope (SEM), atomic force microscope (AFM) and energy dispersive spectrometer (EDS) measurements.
Negotiating Space: The Construction of a New Spatial Identity for Palestinian Muslim Women in Israel
Authors: Abu Oksa Daoud Suheir
Published: July 2017

This article examines the impact of space on Muslim Palestinian women living in ethnically divided and deindustrialized cities and the roles ethnic marginalization and patriarchy play in shaping their spatial experiences. It examines how women negotiate their roles within space and establish themselves as actors therein. This study also explores the connection between mobility and space in the case of Palestinian Muslim women in Israel. It considers whether and how space and mobility are connected for this minority group. Muslim women in Israel, who were once rarely involved in spaces outside their homes, fields, and villages, have broken existing boundaries to enter new economic, social, and educational environments. However, the gendering of space for these women has been profoundly changed and challenged by a variety of factors, namely state interference, modernization, and Islamism.
A Novel Study of Waveguide Propagation Rules of Coal Rock AE Signal: Effects of Waveguide Size and Installation Method on the Propagation Rules of Coal Rock AE Signal
Authors: Dong Guowei , Zou Yinhui
Published: July 2017

The propagation of acoustic emission (AE) signal in waveguide is quite important for AE-based prediction of dynamic disasters in coal rocks. In this study, based on some relevant theories in wave mechanics, the elastic mechanical model of one-dimensional (1D) waveguide was firstly established, and the relationship between AE source signal and the signal at the waveguide’s receiving end was derived. On the basis of theoretical analysis, numerical simulation and laboratory test schemes were designed; additionally, using the standard vibration source method, AE response in different sizes of waveguides were investigated, the effects of waveguide size of waveguide were concluded, and the application conditions of the established theoretical model were clarified. Numerical simulation results fit well with the laboratory test results. Meanwhile, the effects of the sensor’s installation method on the propagation rules of AE signal were examined and appropriate installation method was determined.
Sustainable Entrepreneurial Orientation in Family Firms
Authors: Hernández-Perlines Felipe , Rung-Hoch Nina
Published: July 2017

This study examines how an entrepreneurial orientation moderates the effect of corporate social responsibility (CSR) on family firm performance. Analysis of 174 family firms was conducted using second-generation, partial least squares structural equation modeling (PLS-SEM) in SmartPLS 3.2.6. A survey of family firms and compliant sustainability reports, made under the rules of the GRI (Global Reporting Initiative) for these firms yielded the empirical data. This study contributes to the literature in several ways. First, the analysis shows that GRI reports offer a suitable way for analyzing CSR because the proposed measures are reliable and valid. Second, CSR actions by family firms exert a substantial positive influence on these firms’ performance. Third, entrepreneurial orientation is a good predictor of the success of family firms, positively influencing their performance. Fourth, entrepreneurial orientation positively moderates the effect of CSR on family firm performance, enhancing this effect.
Almond Skin Extracts Abrogate HSV-1 Replication by Blocking Virus Binding to the Cell
Authors: Bisignano Carlo , Mandalari Giuseppina , Smeriglio Antonella , Trombetta Domenico , Pizzo Maria , Pennisi Rosamaria , Sciortino Maria
Published: July 2017

The aim of the present research was to determine the effect of almond skin extracts on herpes simplex virus 1 (HSV-1) replication. Drug-resistant strains of HSV frequently develop following therapeutic treatment. Therefore, the discovery of novel anti-HSV drugs deserves great effort. Here, we tested both natural (NS) and blanched (BS) polyphenols-rich almond skin extracts against HSV-1. HPLC analysis showed that the prevalent compounds in NS and BS extracts contributing to their antioxidant activity were quercetin, epicatechin and catechin. Results of cell viability indicated that NS and BS extracts were not toxic to cultured Vero cells. Furthermore, NS extracts were more potent inhibitors of HSV-1 than BS extracts, and this trend was in agreement with different concentrations of flavonoids. The plaque forming assay, Western blot and real-time PCR were used to demonstrate that NS extracts were able to block the production of infectious HSV-1 particles. In addition, the viral binding assay demonstrated that NS extracts inhibited HSV-1 adsorption to Vero cells. Our conclusion is that natural products from almond skin extracts are an extraordinary source of antiviral agents and provide a novel treatment against HSV-1 infections.
REDUCING A POSSIBILITY OF TRANSPORT CONGESTION ON FREEWAYS USING RAMP CONTROL MANAGEMENT
Authors: Lagerev Roman , Kapski Denis , Burinskienė Marija , Barauskas Andrius
Published: July 2017

Merge junctions are the key elements in the freeway system, as they are likely to function as bottlenecks. Investigations into breakdown occurrence at ramp junctions have demonstrated that when the groups of several vehicles following each other enter the freeway from the ramp, they are expected to create ‘turbulence’ resulting from lane changes, decelerations of vehicles on the mainline and inevitably by the cars merging from the on-ramp. This turbulence can lead to breakdown when the level of mainline demand is adequately high. In other words, the impact of a ramp vehicle on capacity is higher than that of a mainline vehicle, which indicates that a part of vehicles will simultaneously occupy two lanes during the process of changing them thus momentarily decreasing the capacity of the link. This feature becomes particularly important near bottlenecks where it might reduce the already limited throughput. The article introduces the main approaches, methodology, principles and stages of transport demand management on freeways that are aimed at improving the operation quality of transport facilities, including road safety. The technique allows evaluating and optimizing a Ramp-Metering (RM) concept from the viewpoint of minimizing the length of queues on ramps and a possibility of transport congestion. The proposed algorithm estimates the probability of starting congestion formation on the ramp using objective information on traffic conditions in each segment of the highway, which is based on the criterion for vehicle density on the lane. The last chapter shows the examples of traffic flow optimization on Western bypass ramps in Vilnius comparing two strategies for access control management using one or several vehicles per lane. Conclusions, trends and work on future investigations are presented at the end of the article.
SOFIA/GREAT Discovery of Terahertz Water Masers∗
Authors: Neufeld David A. , Melnick Gary J. , Kaufman Michael J. , Wiesemeyer Helmut , Güsten Rolf , Kraus Alex , Menten Karl M. , Ricken Oliver , Faure Alexandre
Published: July 2017

We report the discovery of water maser emission at frequencies above 1 THz. Using the GREAT instrument on SOFIA, we have detected emission in the 1.296411 THz

8

27

−

7

34

transition of water toward three oxygen-rich evolved stars: W Hya, U Her, and VY CMa. An upper limit on the 1.296 THz line flux was obtained toward R Aql. Near-simultaneous observations of the 22.23508 GHz

6

16

−

5

23

water maser transition were carried out toward all four sources using the Effelsberg 100 m telescope. The measured line fluxes imply 22 GHz/1.296 THz photon luminosity ratios of 0.012, 0.12, and 0.83, respectively, for W Hya, U Her, and VY CMa, values that confirm the 22 GHz maser transition to be unsaturated in W Hya and U Her. We also detected the 1.884888 THz

8

45

−

7

52

transition toward W Hya and VY CMa, and the 1.278266 THz

7

43

−

6

52

transition toward VY CMa. Like the 22 GHz maser transition, all three of the THz emission lines detected here originate from the ortho-H2O spin isomer. Based upon a model for the circumstellar envelope of W Hya, we estimate that stimulated emission is responsible for ∼85% of the observed 1.296 THz line emission, and thus that this transition may be properly described as a terahertz-frequency maser. In the case of the 1.885 THz transition, by contrast, our W Hya model indicates that the observed emission is dominated by spontaneous radiative decay, even though a population inversion exists.
Ciência da linguagem: uma reflexão sobre o conceito de paradigmas
Authors: Damázio Paula Regina Scoz Domingos , Pires de Oliveira Roberta
Published: July 2017

Neste artigo, discutimos criticamente a proposta epistemológica de Pires de Oliveira e Basso (2011). Os autores propõem que a linguística contemporânea se estrutura em dois paradigmas: o científico e o humanista. O objetivo é questionar a aplicação do conceito de paradigma para o caso da linguística; argumentaremos que ele é inadequado para descrever a linguística atual. Vamos propor a noção de comunidades de fala para explicar o momento atual da linguística. Com isso, espera-se motivar novos estudos na necessária discussão em epistemologia da linguística, especialmente no que se refere à aplicação do modelo kuhniano.
Variação na concordância verbal no português brasileiro: olhares variacionistas
Authors: Pereira Maria Lidiane De Sousa , Araújo Aluiza Alves de
Published: July 2017

O objetivo deste trabalho é mapear os fatores linguísticos e sociais que têm condicionado a manutenção e/ou o cancelamento das marcas de concordância padrão entre verbo-sujeito na 3ª pessoa do plural (3PP) no português brasileiro (PB), em diferentes regiões do Brasil. Para tanto, analisamos estudos sobre o fenômeno em tela desenvolvidos à luz da sociolinguística (LABOV, 2006, 2008 [1972, 2010) e realizados em quatro das cinco regiões do país: Oliveira (2005), Sgarbi (2006), Almeida (2006) e Monte (2007), para as regiões nordeste, centro-oeste, sul e sudeste, respectivamente. Com base na observação dos principais resultados obtidos para o fenômeno em tela nos estudos citados, verificamos que, em todas as comunidades estudadas, a variação entre verbo-sujeito na 3PP é condicionada tanto por fatores internos e/ou externos ao sistema linguístico. Dentre os primeiros, os que mais se destacaram foram a saliência fônica, a realização e posição do sujeito, tipo estrutural do sujeito e paralelismo formal no nível oracional. Já entre os segundos, temos a faixa etária, o sexo/gênero, a escolaridade e a procedência.
Evaluación del efecto rejuvenecedor de bio-materiales sobre ligantes para mezclas con alto contenido de asfalto recuperado
Authors: Jiménez del Barco-Carrión A. , Pérez-Martínez M. , Themeli A. , Lo Presti D. , Marsac P. , Pouget S. , Hammoum F. , Chailleux E. , Airey G. D.
Published: July 2017

El interés en la utilización de bio-materiales en ingeniería de pavimentos ha crecido significantemente en las últimas décadas debido a la conciencia ambiental sobre el uso de recursos naturales no renovables. En este artículo, se utilizan bio-materiales para recuperar las propiedades iniciales del betún envejecido presente en mezclas con alto contenido de asfalto reciclado (RA). Para ello, se ha estudiado y comparado el comportamiento de dos bio-materiales con betunes convencionales y betunes modificados con polímeros. Con este objetivo, se fabricaron mezclas de bio-materiales y betún reciclado simulando mezclas asfálticas con 50% de contenido de reciclado. El efecto rejuvenecedor de los bio-materiales se ha evaluado y comparado con el efecto rejuvenecedor de ligantes convencionales mediante el cálculo de las distribuciones de peso molecular aparente y diferentes parámetro reológicos. Los resultados muestran el poder rejuvenecedor de los bio-materiales, poniendo de manifiesto su potencial para usarse como ligantes vírgenes en mezclas asfálticas con alto contenido de reciclado.
Jeux numériques pour l’apprentissage : jouer avec la langue ou créer par la langue
Authors: Rémon Joséphine
Published: July 2017

Dans l’optique de redonner toute leur place aux jeux dans l’enseignement/apprentissage des langues, nous présentons des ressources numériques pour la pratique de l’anglais. Nous proposons des principes opérationnels et une classification empirique en fonction du rapport de ces ressources à la langue et à la créativité. Nous proposons aussi une réflexion sur la relation entre luminosité et interactivité. Si l’apprenant ou l’enseignant peuvent être utilisateurs de ressources, on peut aussi mettre en place des activités où la production langagière elle-même, et elle seule, permet la résolution de la tâche numérique.
Penser l’intégration du jeu vidéo en classe de langue
Authors: Schmoll Laurence
Published: July 2017

Le jeu vidéo fait son entrée dans les classes de langue en raison de son potentiel motivationnel. Il représente, de plus, un intérêt certain en regard de la perspective actionnelle prônée par le CECRL. L’intégrer aux enseignements relève cependant de la gageure car l’idée du jeu peut parfois être conçue comme incompatible avec la notion de travail en milieu d’apprentissage. Dans cet article, nous montrons le lien entre jeu et perspective actionnelle puis nous exposons différentes modalités du jeu vidéo en classe de langue vivante, en proposant des exemples de pratiques possibles en milieu universitaire. Nous soumettons également un modèle de scénario ludo-éducatif susceptible de résoudre la tension existante entre jeu et apprentissage.
Role Play: A Practical Way to Teach Intercultural Communication
Authors: Léon-Henri Dana Di Pardo , Jain Bhawana
Published: July 2017

In an increasingly global and mobile society, we are faced with greater cultural diversity both in our professional and private lives. As a result of this, more and more emphasis is being placed on the need for intercultural awareness, adaptation and respect for cultural differences. This is reflected in the updated (2013) Higher Education (HE) curriculum for the two-year Business Administration and Management program in France, which now includes an intercultural communicative language teaching strand for Business English (BE) classes. For English language teachers, the real challenge is to find a meaningful and entertaining way to sensitize learners to the complexities of this topic, while assisting them in the development of their professional English and metacognitive skills. This teaching note investigates the implementation and results of pedagogical method which involves a group of first year business students for a professional peer collaborative role-play activity by means of the Content and Language Integrated Learning (CLIL) approach.
HIPOADRENOCORTICISMO EM CÃES
Authors: Correia Paula Priscila , Andrade Teles Carlos Henrique , D'Alencar Maíra Pereira , Dos Santos Lúcia de Fátima Lopes
Published: July 2017

O hipoadrenocorticismo é uma endocrinopatia incomum de difícil diagnóstico em cães, já que os sinais clínicos são bastante variáveis e assemelham-se a outras doenças comuns da clínica médica de pequenos animais. Normalmente acomete animais jovens ou de meia-idade, sendo que as raças mais predispostas ao surgimento da enfermidade incluem: Poodle, Springer Spaniel, Rottweiller, Dogue Alemão e West Highland Terrier. O diagnóstico é confirmado pela escolha correta dos testes hormonais. Ele deve ser realizado o mais rápido possível já que animais em crise podem ir à óbito dentro de algumas horas.
Resistência aos antibióticos em Staphylococcus spp. isolados de cães em uma clínica veterinária do Callao, Peru
Authors: Luján-Roca Daniel Ángel , Luján-Roca Luz Milagros , Saavedra-Espinoza Ivanhoe
Published: July 2017

O objetivo do presente estudo foi avaliar a resistência aos antibióticos em cepas de Staphylococcus spp. isoladas de cães. Um total de 80 cepas foram avaliadas na sua suscetibilidade frente a dez antibióticos usando o método de disco difusão. As maiores resistências apresentaram-se para neomicina (50%), trimetoprima/sulfametoxazol (30%) e clindamicina (26,3%). Multirrêsistencia foi detectada em 20% das amostras. Os resultados deste estudo indicam que a resistência frente a Staphylococcus spp. está disseminada entre os agentes e o uso da neomicina pode ficar comprometido.
Documentação fotográfica de cães errantes nas áreas adjacentes ao campus da UFSC em Curitibanos/SC
Authors: Da Rocha Marilise França , Guimarães da Silva Rosane Maria , Acosta Tábata Vignol , Seula Morgana De Liz , Bitencourt Jorge Joyce Helena , Cunha Karoline Menegotto
Published: July 2017

Desde o início das atividades no Campus da UFSC em Curitibanos, é notável a presença de cães errantes na área do campus e arredores. Houve relatos da comunidade de que o número de animais abandonados ou circulando livremente estava aumentando com o passar dos anos e que este aumento se intensificou com a abertura do curso de Medicina Veterinária. A presença de cães nas ruas causa preocupação à população devido aos transtornos que podem causar, como por exemplo, acidentes automobilísticos, atropelamento desses animais, acidentes por mordedura, dejetos, transmissão de doenças entre outros. Buscando confirmar estes relatos, iniciou-se este estudo que documentou a presença, frequência e quantidade de cães no decorrer do ano, levando-se em consideração o clima, a temperatura, a pluviosidade e as épocas de recessos e feriados, através de registro fotográfico e anotações. Com os resultados obtidos neste estudo pode-se comprovar que há relação entre fatores como condições climáticas, presença de lixo, entre outros, com o aparecimento de animais errantes e que pelo menos 95 cães diferentes apareceram vagando nos quatro pontos de estudo, sendo um número relativamente alto. A finalidade deste projeto é juntar estas informações e estabelecer a relação do número de animais nas ruas com os períodos letivos e não letivos e com as condições climáticas ou estações do ano, além de identificar os cães o errantes, e assim ter base para futuros projetos de conscientização contra o abandono e outras medidas para prevenir que mais cães sejam abandonados e solucionar os casos já existentes.
Hiperadrenocorticismo Em Cães - Revisão de Literatura
Authors: Benedito Geovanna Santana , Rossi Eduardo Morro , Camargo Mauro Henrique Bueno
Published: July 2017

Hiperadrenocorticismo é uma das mais comuns endocrinopatias de cães idosos hoje em dia. Raramente acomete gatos. Trata-se de uma enfermidade silenciosa, que causa debilidade significante na saúde do paciente, e inicia-se com sinais inespecíficos tais como poliúria, polidipsia e polifagia, Muitas vezes pode também causar hipertensão e ser a causa base de diabetes melito, insuficiência cardíaca congestiva e outras enfermidades. Apesar de se tratar de uma enfermidade muito importante, algumas vezes passa despercebida por médicos veterinários. Tem um tratamento clínico relativamente simples e eficaz, dependendo da gravidade do quadro. O presente trabalho tem como objetivo descrever algumas características do hiperadrenocorticismo, com intuito de atualizar estudantes e médicos veterinários sobre o assunto.Palavras-chave: Endocrinopatia, Síndrome de Cushing, Cortisol, Trilostano, Mitotano.
Experiments and Optimization of Mix Proportions for Cement Paste Backfill Materials with Extra-Fine Unclassified Tailings
Authors: Huang Ming Qing , Liu Xiao Hui , Cheng Hai Yong
Published: July 2017

To produce effective cement paste backfill materials at iron mines technologically and economically, orthogonal experiments of mix proportions with extra-fine unclassified tailings were carried out. The results of the range analysis showed that the sensitivity of influential factors to the slurry slump is sequentially mass concentration, tailing/rock ratio, and cement/(tailing+rock) ratio. The sensitivity to bleeding rate, concretion time and 28-day uniaxial compressive strength is sequentially mass concentration, cement/(tailing+rock) ratio and tailing/rock ratio. Relationships of paste properties and influential factors can be demonstrated with regression analysis. Additionally, the optimal mix proportion for cement paste backfill was obtained with 78% mass concentration, 7:3 tailing/rock ratio and 1:25 cement/(tailing+rock) ratio. The slump, bleeding rate, concretion time and R28 of the optimal mixture are 25.2 cm, 8.77%, 20.9 h and 1.29 MPa, respectively. The experimental results show a feasible way to produce the industry standard backfilling materials.
A Study on the Optimum Material Mix Design for Vegetation Shotcrete Using Mineral Additive
Authors: Yang Eun Ik , Choi So Yeong , Lee Gyung Jong , Choi Yoon Suk
Published: July 2017

In this paper, the material characteristics of field applied green slope soil for the development of vegetation shotcrete using mineral additive are evaluated. And, the effect of the moisture content of fertilizer on properties of the shotcrete soil using the mineral additives are investigated. From the results, it was found that when the compaction level increase, soil hardness and soil strength are increased. Moreover, after a certain level of consolidation is proceeded, soil hardness and soil strength are not affected by ages. However, in order to ensure slope stability, the cohesion of the field applied soil should be improved. When the mineral additive is mixed as a green shotcrete soil materials, it could be attributed to the increment of adhesion between green slope soil and slope face. And, when the moisture content of fertilizer increases, the soil hardness and soil strength is decreased. The moisture content of fertilizer increases, shrinkage decrease at early ages, however, shrinkage increased with ages. The optimum moisture content of fertilizer was about 60% from the view point of shrinkage and soil hardness of green shotcrete soil.
Corrosion Behaviors for Galvanizing, Galvalume and Chromate Treated Steels in 1% NaOH Solution
Authors: Moon Kyung Man , Lee Sung Yul , Jeong Jae Hyun , Lee Myeong Hoon
Published: July 2017

The galvanized steel structures may be inevitably corroded rapidly in the case of exposed to corrosive environments for long time, and these corrosive environments has been accelerated with increasing the environmental contamination due to the rapid development of industrial society. However, since the galvanizing method have the various merits compared to surface coating treatment in economical point of view, the galvanized steel have been extensively used to the numerous constructional steels such as a guard rail of high way, various types of structural steel for manufacturing ship and various industrial fields etc.. Therefore, it has been made an effort to improve the corrosion resistance of the galvanizing film through various methods such as variation of chemical composition of galvanizing bath, chromate treatment and coating treatment etc.. In this study, comparison evaluation on the corrosion resistance of three types of the test specimens, that is, three samples of pure galvanizing, galvalume and chromate treatment were investigated using electrochemical methods in 1% NaOH solution. The samples of chromate treatment and of galvalume exhibited the lowest and highest corrosion current density respectively in 1% NaOHsolution. In addition, the sample of chromate treatment revealed the highest impedance at 0.01Hz, which is considered that the oxide film by chromate treatment is deposited on the surface of pure galvanizing sample. After drawing polarization curves, the corroded surface of the pure galvanizing specimen indicated pattern like as localized corrosion, moreover, the large amount of corrosive products was observed on the surface of galvalume sample. However, the smooth pattern nearly similar to general corrosion was observed at the corroded surface of the sample of chromate treatment. Consequently, it is considered that the chromate treatment is an optimum method compared to pure galvanizing and, galvalume treatment to improve corrosion resistance in 1% NaOH solution.
Mechanical Clinching of Titanium and Aluminum-Lithium Sheet Materials
Authors: He Xiao Cong , Zhao De Suo
Published: July 2017

This paper deals with the join-ability of extensible die mechanical clinching in titanium and aluminium-lithium sheet materials. Latest developments in extensible die mechanical clinching processes for sheet materials are reviewed. Clinching process tests were carried out for the dissimilar alloy sheets combinations. To increase the join-ability, TA1 sheets were heated to 700 °C by an oxyacetylene flame gun. The temperature was controlled by an infrared thermometer. Tensile-shear tests were carried out to characterize the mechanical properties of the clinched joints. The quality assessment and failure mode of clinched joints were studied. Results showed that clinched joints of titanium and aluminium-lithium have very good join-ability and load-bearing capacity. It can be inferred from the energy absorption analyse results that the clinch joints failed with neck fracture mode can absorb more energy than that of the clinch joints failed with button separation mode.
Laser Direct-Part Marking of Data Matrix Barcodes on the Surface of Metal Alloy Material
Authors: Li Chun Ling , Lu Chang Hou
Published: July 2017

The influences of laser processing parameters on the symbol contrast and surface roughness of Data Matrix barcodes were studied by single factor experiments using a Q-switched lamp pumped Nd:YAG laser. The orthogonal experiments were carried out to further study the relationship between laser parameters and surface roughness. Multivariate nonlinear regression analyses were performed based on the orthogonal experimental results and a mathematical relationship between parameters and surface roughness was established. The results show that the change trend of surface roughness is similar to symbol contrast with the increase of laser parameters. Both the average power and two different overlaps are important factors affecting the surface roughness and symbol contrast. But the current intensity has an insignificant impact on the surface roughness. The developed regression model can be used to predict the roughness of Data Matrix barcodes. This study can improve industrial application of laser direct part marking technology on titanium alloy substrates.
Fatigue Life Evaluation of Weld Surfacing LB 52 Grade
Authors: Sitthipong Siva , Towatana Prawit , Sitticharoenchai Amnuay , Meengam Chaiyoot
Published: July 2017

The damage to the propeller shaft, a principal mechanical component in the power transmission system of Boats makes engines work harder than normal attributed to less transmission efficiency. Operating boats with the damaged propeller shaft increases the rate of fuel consumption per distance and cost of fishing which affects income of coastal fishermen. The result of a preliminary survey of Boats at Kaoseng Community revealed that the service life of the damaged propeller shafts caused by the fatigue failure would be repaired by shield metal arc welding process. The statistical analysis showed that the useful life depended on fatigue endurance limit of welding surface. When they were back to be used again. The objective of this research was to study the fatigue life of hardfacing surface by solid wire. The method of this research included (a) building up the hardfacing surface (b) forming specimen from hardfacing surface and (c) finding out the fatigue life by fatigue testing machine base on ASTM E739-91 standard. The results of this research indicated that hardfacing surface by solid wire could not receive fatigue stress exceed 500 MPa. The propeller shafts after being repaired will have very short service life, which is not feasible in engineering economy.