199 research outputs found
The C-E Translation of Business Promotional Material Based on Skopostheorie
Based on Translation Skopostheorie, the author briefly expounds the purpose of C-E translation of businessesā promotional material. Simultaneously, the typical problems appeared in the translation process have been explored and analyzed. With practical examples, the author probes into some rules for solving these problems. The problems in such translation can be often found in the following four categories---straying away from the source text, being constrained to the source text, lacking in cultural elements, having grammatical errors and improper expressions. However, three rules of Skopostheorie---skopos rule, intratextual coherence rule, and inter-textual coherence rule may be used as guidance for solving these problems
Infinite-thin shock layer solutions for stationary compressible conical flows and numerical results via Fourier spectral method
We consider the problem of uniform steady supersonic Euler flows passing a
straight conical body with attack angles, and study Radon measure solutions
describing the infinite-thin shock layers, particularly for the Chaplygin gas
and limiting hypersonic flows. As a byproduct, we obtain the generalized
Newton-Busemann pressure laws. To construct the Radon measure solutions
containing weighted Dirac measures supported on the edge of the cone on the
2-sphere, we derive some highly singular and non-linear ordinary differential
equations (ODE). A numerical algorithm based on the combination of Fourier
spectral method and Newton's method is developed to solve the physically
desired nonnegative and periodic solutions of the ODE. The numerical
simulations for different attack angles exhibit proper theoretical properties
and excellent accuracy, thus would be useful for engineering of hypersonic
aerodynamics.Comment: 15 pages, 10 figure
Generalized Newton-Busemann Law For Two-Dimensional Steady Hypersonic-limit Euler Flows Passing Ramps With Skin-Frictions
By considering Radon measure solutions for boundary value problems of
stationary non-isentropic compressible Euler equations on hypersonic-limit
flows passing ramps with frictions on their boundaries, we construct solutions
with density containing Dirac measures supported on the boundaries of the
ramps, which represent the infinite-thin shock layers under different
assumptions on the skin-frictions. We thus derive corresponding generalizations
of the celebrated Newton-Busemann law in hypersonic aerodynamics for
distributions of drags/lifts on ramps.Comment: 12 pages,1 figur
Bacteriological and Molecular Identification of Bartonella Species in Cats from Different Regions of China
With the improvements in diagnostic techniques, Bartonella henselae (B. henselae) infection has recently been recognized to cause a widening spectrum of diseases. Cats are the natural reservoir hosts of B. henselae. The current study aims to investigate the prevalence of B. henselae infection in the cat populations in China. Polymerase chain reaction (PCR) and bacterial cultures confirm that 12.7% of the tested cats were positive for the infection. Old age and outdoor exposure were statistically associated with the infection. Multilocus sequence typing and eBURST analysis of the cat isolates collected in the present study show that 65.4% of the isolates belong to sequence type 1 (ST1). Three new STs (ST16ā18) were identified in Midwestern China. These results may aid our understanding of the population structure of B. henselae in China and the relationship between human and cat strains in subsequent studies
Intraplaque hemorrhage is associated with higher structural stresses in human atherosclerotic plaques: an in vivo MRI-based 3D fluid-structure interaction study.
BACKGROUND: Studies using medical images have shown that intraplaque hemorrhage may accelerate plaque progression and may produce a stimulus for atherosclerosis development by increasing lipid core and plaque volume and creating new destabilizing factors. Image-based 3D computational models with fluid-structure interactions (FSI) will be used to perform plaque mechanical analysis and investigate possible associations between intraplaque hemorrhage and both plaque wall stress (PWS) and flow shear stress (FSS). METHODS: In vivo MRI data of carotid plaques from 5 patients with intraplaque hemorrhage confirmed by histology were acquired. 3D multi-component FSI models were constructed for each plaque to obtain mechanical stresses. Plaque Wall Stress (PWS) and Flow Shear Stress (FSS) were extracted from all nodal points on the lumen surface of each plaque for analysis. RESULTS: The mean PWS value from all hemorrhage nodes of the 5 plaques combined was higher than that from non-hemorrhage nodes (75.6 versus 68.1 kPa, P = 0.0003). The mean PWS values from hemorrhage nodes for each of the 5 plaques were all significantly higher (5 out of 5) than those from non-hemorrhage nodes (P < 0.05). The mean FSS value from all hemorrhage nodes of the 5 plaques combined was 30.4% higher than that from all non-hemorrhage nodes (15.0 versus 11.5 dyn/cm2, P = 0.0002). However, the mean flow shear stress values from individual cases showed mixed results: only one out of five plaques showed mean FSS value from hemorrhage nodes was higher than that from non-hemorrhage nodes; three out of five plaques showed that their mean FSS values from hemorrhage nodes were lower than those from non-hemorrhage nodes; and one plaque showed that the difference had no statistical significance. CONCLUSION: The results of this study suggested that intraplaque hemorrhage nodes were associated with higher plaque wall stresses. Compared to flow shear stress, plaque wall stress has a better correlation with plaque component feature (hemorrhage) linked to plaque progression and vulnerability. With further validation, plaque stress analysis may provide additional stress indicators for image-based vulnerability assessment.RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are
Plasma beam dumps for the EuPRAXIA facility
Beam dumps are indispensable components for particle accelerator facilities to absorb or dispose beam kinetic energy in a safe way. However, the design of beam dumps based on conventional technology, i.e., energy deposition via beamādense matter interaction, makes the beam dump facility complicated and large in size, partly due to the high beam intensities and energies achieved. In addition, specific methods are needed to address the radioactive hazards that these high-power beams generate. On the other hand, the European Plasma Research Accelerator with eXcellence in Application (EuPRAXIA) project can advance the laserāplasma accelerator significantly by achieving a 1ā5 GeV high-quality electron beam in a compact layout. Nevertheless, beam dumps based on the conventional technique will still produce radiation hazards and make the overall footprint less compact. Here, a plasma beam dump will be implemented to absorb the kinetic energy from the EuPRAXIA beam. In doing so, the overall compactness of the EuPRAXIA layout could be further improved, and the radioactivity generated by the facility can be mitigated. In this paper, results from particle-in-cell simulations are presented for plasma beam dumps based on EuPRAXIA beam parameters
Vitamin D and suicidality: a Chinese early adolescent cohort and Mendelian randomization study
Abstract
Aims
Previous cross-sectional and caseācontrol studies have proposed that decreased vitamin D levels are positively correlated with the risk of suicidality in adults. However, limited studies have examined the association between vitamin D and suicidality in adolescents. This study aimed to investigate the relationship between serum vitamin D and suicidality risk among early adolescents.
Methods
Data were obtained from a Chinese early adolescent cohort. In this cohort, seventh-grade students from a middle school in Anhui Province were invited to voluntarily participate in the baseline assessments and provide peripheral blood samples (in September 2019). The participants were followed up annually (in September 2020 and September 2021). Serum 25-hydroxyvitamin D [25(OH)D] and vitamin Dārelated single-nucleotide polymorphisms at baseline were measured in November 2021. Traditional observational and Mendelian randomization (MR) analyses were performed to examine the relationship between serum 25(OH)D at baseline and the risk of baseline and incident suicidality (i.e., suicidal ideation [SI], plans and attempts).
Results
Traditional observational analysis did not reveal a significant linear or non-linear association of serum 25(OH)D concentration with the risks of baseline and 2-year incident suicidality in the total sample (PĀ >Ā .05 for all). Sex-stratified analysis revealed a non-linear association between the 25(OH)D concentration and the risk of baseline SI in women (PoverallĀ =Ā .002; Pnon-linearĀ =Ā .001). Moreover, the risk of baseline SI in the 25(OH) insufficiency group was lower than that in the 25(OH) deficiency group in the total sample (odds ratio [OR]Ā =Ā 0.69, 95% confidence interval [CI]Ā =Ā 0.51ā0.92, PĀ =Ā .012). This difference remained significant in women (ORĀ =Ā 0.59, 95% CIĀ =Ā 0.40ā0.87, PĀ =Ā .008) but not in men (ORĀ =Ā 0.78, 95% CIĀ =Ā 0.53ā1.15, PĀ =Ā .205). Additionally, both linear and non-linear MR analyses did not support the causal effect of serum 25(OH)D concentration on the risk of baseline, 1-year and 2-year incident suicidality (PĀ >Ā .05 for all).
Conclusions
This study could not confirm the causal effect of vitamin D on suicidality risk among Chinese early adolescents. Future studies must confirm these findings with a large sample size
One independent or many independent? The relationship among self-construal, number of brand endorsers, and brand attitudes
IntroductionIt was common for brands to use different numbers of endorsers in marketing practice. Nevertheless, research on brand endorsersā quantity has not yielded a uniform consensus. The previous research about brand endorsers mainly focuses on the appeal of endorsement, brand category, and endorser characteristics, paying less attention to the impact of cultural factors, particularly self-construal. This study delves into selecting brand endorsers across diverse cultural regions for the same brand.MethodsDrawing on the principles of self-consistency theory and self-construal theory, our research, conducted through three distinct experiments, reveals that consumers tend to hold more favorable opinions about brands endorsed by a single individual. Furthermore, self-consistency emerges as a crucial mediating factor in this phenomenon. Additionally, self-construal is an essential factor among consumers from various cultural backgrounds.ResultsConsumers with an independent self-construal exhibit more favorable brand perceptions when it comes to single-endorser brands compared to their counterparts with an interdependent self-construal. Conversely, individuals with an interdependent self-construal demonstrate a more positive disposition towards brands with multiple endorsers than those with an independent self-construal.DiscussionThis research not only enriches and extends our theoretical understanding of the impact of the number of brand endorsers on consumer brand attitudes but also provides valuable practical insights for optimizing the selection of brand endorsers for companies
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