bluuebunny/crossref_metadata_2025_split huggingface dataset:
Corporate Motivation to Risk Prevention: Applied Exploratory Analysis in Construction Sector in Catalonia
Authors: Terrés Fernando , Castejón Emilio , Mondelo Pedro R. 
Published: November 2011

AbstractIn this article, we have undertaken an exploratory analysis of the extrinsic and intrinsic factors affecting an employer's safety motivation in the construction industry, and their correlation with firm size, management level, and perceived risk. We have employed a model based on previous research by Michael Wright for the Health and Safety Executive (UK). Methods: A sample of managers from 198 construction firms in Catalonia (Spain) were interviewed collecting relevant data. The exploratory factor analysis of this data detected two factors: extrinsic (prosecution, inspection, external pressure) and intrinsic (legal, responsibility, internal involvement). Confirmatory factor analysis did not rule out the presence of extrinsic and intrinsic factors (Wright), and the analysis with covariates (MIMIC model) showed significant positive relationships between extrinsic factors, management level, and perceived risk. It also showed a significant positive relationship between intrinsic factors and firm size. Conclusion: The aim of this study was to make a preliminary diagnostic of an employer's safety motivation. Our findings indicate that it is possible to develop external motivators (advice from inspection bodies, union activities, publicity of prosecution records, etc.) that are addressed to top managers and to firms more exposed to risk. We have also found that it is possible to develop internal motivators by introducing experience modification ratings, social accounting, advertising in the mass media, and promotion campaigns, particularly among bigger firms. Our findings will be useful to government agencies, company managers, and consultants and may be adapted for use in motivating midlevel staff to adopt participatory intervention programs.© 2011 Wiley Periodicals, Inc.
Effect of connecting rain barrels on the storage size reduction
Authors: Seo Yongwon , Choi Nam‐Jeong , Park Daeryong 
Published: November 2011

AbstractIn this article, the possibility of sharing rain barrels and the potential benefit of reducing storage size through physical and non‐physical connections of rain barrels in a community are investigated. Using the concepts of homogeneous/heterogeneous users in rainwater harvesting systems (RWHS), two simple cases of a community composed of four prospective users are examined. The first is performed with the users who have the same mean and variance in water demands (homogeneous users), and the second is with the users with different means and variances (heterogeneous users). To take account for the rainfall characteristics in different places, historical records from six cities in the USA are used for storage–reliability–yield analysis. The result indicates that required total storage can be reduced by connecting multiple rain barrels. In addition, a significant difference is found between homogeneous and heterogeneous user groups. Homogeneous users do not achieve a substantial benefit from connecting their rain barrels; these users may even be disadvantaged by sharing. In contrast, heterogeneous users receive benefit by reducing the total required storage. Most benefit is expected between users with maximum difference in mean water demands. The reduction in storage size was as considerable as 37% in this study. The quantity of storage reduction depends on locations and target reliabilities. Knowledge of the benefits and limitations of rain barrel connections can improve RWHS performance through ability to customize a network plan for individual users. Copyright © 2011 John Wiley & Sons, Ltd.
Ascochlorin inhibits growth factor‐induced HIF‐1α activation and tumor‐angiogenesis through the suppression of EGFR/ERK/p70S6K signaling pathway in human cervical carcinoma cells
Authors: Jeong Ji‐Hak , Jeong Yun‐Jeong , Cho Hyun‐Ji , Shin Jae‐Moon , Kang Jeong‐Han , Park Kwan‐Kyu , Park Yoon‐Yub , Chung Il‐Kyung , Chang Hyeun‐Wook , Magae Junji , Kang Shin‐Sung , Chang Young‐Chae 
Published: November 2011

AbstractAscochlorin, a non‐toxic prenylphenol compound derived from the fungus Ascochyta viciae, has been shown recently to have anti‐cancer effects on various human cancer cells. However, the precise molecular mechanism of this anti‐cancer activity remains to be elucidated. Here, we investigated the effects of ascochlorin on hypoxia‐inducible factor‐1α (HIF‐1α) and vascular endothelial growth factor (VEGF) expression in human epidermoid cervical carcinoma CaSki cells. Ascochlorin inhibited epidermal growth factor (EGF)‐induced HIF‐1α and VEGF expression through multiple potential mechanisms. First, ascochlorin selectively inhibited HIF‐1α expression in response to EGF stimulation, but not in response to hypoxia (1% O2) or treatment with a transition metal (CoCl2). Second, ascochlorin inhibited EGF‐induced ERK‐1/2 activation but not AKT activation, both of which play essential roles in EGF‐induced HIF‐1α protein synthesis. Targeted inhibition of epidermal growth factor receptor (EGFR) expression using an EGFR‐specific small interfering RNA (siRNA) diminished HIF‐1α expression, which suggested that ascochlorin inhibits HIF‐1α expression through suppression of EGFR activation. Finally, we showed that ascochlorin functionally abrogates in vivo tumor angiogenesis induced by EGF in a Matrigel plug assay. Our data suggest that ascochlorin inhibits EGF‐mediated induction of HIF‐1α expression in CaSki cells, providing a potentially new avenue of development of anti‐cancer drugs that target tumor angiogenesis. J. Cell. Biochem. 113: 1302–1313, 2012. © 2011 Wiley Periodicals, Inc.
Reactivating PP2A by FTY720 as a Novel therapy for AML with C‐KIT tyrosine kinase domain mutation
Authors: Yang Yan , Huang Qing , Lu Yanjun , Li Xiaoqing , Huang Shiang 
Published: November 2011

AbstractThe tyrosine kinase domain (TKD) mutations of receptor tyrosine kinase C‐KIT are associated with a poor prognosis in acute myeloid leukemia (AML). However, the underlying mechanisms are not fully understood. We found the activity of protein phosphatase 2A (PP2A), a human tumor suppressor whose dysfunction contributes to malignant cell behavior, was significantly decreased in AML subgroups harboring C‐KIT/D816V and AML cell line Kasumi‐1 bearing C‐KIT/N822K mutation. Primary AML cells and various AML cell lines were treated with PP2A activator FTY720. FTY720 showed a toxic effect in all leukemic cells, especially for cells harboring C‐KIT/TKD mutation. Furthermore, FTY720‐induced toxicity in AML leukemic cells was mediated by restoration of PP2A activity, via down‐regulation of PP2A inhibitor SET, dephosporylation of PP2A‐CTYR307, and up‐regulation of relevant PP2A subunit A and B55α. Our research indicates that the decreased PP2A activity in AML harboring C‐KIT/TKD mutation may make the restoration of PP2A activity a novel therapy for AML patients with C‐KIT/TKD mutation. J. Cell. Biochem. 113: 1314–1322, 2012. © 2011 Wiley Periodicals, Inc.
A new infinite class of S(3, {4, 5, 7}, v)
Authors: Ji Lijun , Zhang Shaopu 
Published: November 2011

AbstractA t‐wise balanced design (atBD) of order v and block sizes from K, denoted by S(t, K, v), is a pair (X, ℬ︁), where X is a v‐element set and ℬ︁ is a set of subsets of X, called blocks, with the property that |B|∈K for any B∈ℬ︁ and every t‐element subset of X is contained in a unique block. In this article, we shall show that there is an S(3, {4, 5, 7}, v) for any positive integer v≡7(mod12) with v≠19. Copyright © 2011 Wiley Periodicals, Inc. J Combin Designs 20:68–80, 2012
The assessment of adeno‐associated vectors as potential intrinsic treatments for brainstem axon regeneration
Authors: Williams Ryan R. , Pearse Damien D. , Tresco Patrick A. , Bunge Mary Bartlett 
Published: November 2011

AbstractBackgroundAdeno‐associated virus (AAV) vector‐mediated transgene expression is a promising therapeutic to change the intrinsic state of neurons and promote repair after central nervous system injury. Given that numerous transgenes have been identified as potential candidates, the present study demonstrates how to determine whether their expression by AAV has a direct intrinsic effect on axon regeneration.MethodsSerotype 2 AAV‐enhanced green fluorescent protein (EGFP) was stereotaxically injected into the brainstem of adult rats, followed by a complete transection of the thoracic spinal cord and Schwann cell (SC) bridge implantation.ResultsThe expression of EGFP in brainstem neurons labeled numerous axons in the thoracic spinal cord and that regenerated into the SC bridge. The number of EGFP‐labeled axons rostral to the bridge directly correlated with the number of EGFP‐labeled axons that regenerated into the bridge. Animals with a greater number of EGFP‐labeled axons rostral to the bridge exhibited an increased percentage of those axons found near the distal end of the bridge compared to animals with a lesser number. This suggested that EGFP may accumulate distally in the axon with time, enabling easier visualization. By labeling brainstem axons with EGFP before injury, numerous axon remnants undergoing Wallerian degeneration may be identified distal to the complete transection up to 6 weeks after injury.ConclusionsSerotype 2 AAV‐EGFP enabled easy visualization of brainstem axon regeneration. Rigorous models of axonal injury (i.e. complete transection and cell implantation) should be used in combination with AAV‐EGFP to directly assess AAV‐mediated expression of therapeutic transgenes as intrinsic treatments to improve axonal regeneration. Copyright © 2012 John Wiley & Sons, Ltd.
A note on shortest cycle covers of cubic graphs
Authors: Hou Xinmin , Zhang Cun‐Quan 
Published: November 2011

AbstractLet SCC3(G) be the length of a shortest 3‐cycle cover of a bridgeless cubic graph G. It is proved in this note that if G contains no circuit of length 5 (an improvement of Jackson's (JCTB 1994) result: if G has girth at least 7) and if all 5‐circuits of G are disjoint (a new upper bound of SCC3(G) for the special class of graphs).
One‐pot synthesis of tetrahydroindeno[1,2‐b]pyrrolo‐3‐carboxylates derivatives
Authors: Azizian Javad , Sheikholeslami Fatemeh , Hosseini Javad , Mohammadi Mohammadkazem , Mirza Behrooz 
Published: November 2011

AbstractTetrahydroindeno [1,2‐b]pyrrole‐3‐carboxylate were synthesized in a one‐pot procedure by the reaction of 1,3‐dicarbonyl and activated carbonyl compounds such as benzyl or ninhydrin in ethanol/water in the presence of ammonium acetate. J. Heterocyclic Chem., (2011).
Analysis of ammonia losses after field application of biogas slurries by an empirical model
Authors: Ni Kang , Pacholski Andreas , Gericke Dirk , Kage Henning 
Published: November 2011

AbstractDue to energy crises and stricter environmental regulations, renewable energy sources like bio‐methane produced by anaerobic digestion (biogas) become increasingly important. However, the application of slurries produced by biogas fermentation to agricultural land and subsequent ammonia emission may also create environmental risks to the atmosphere and to N‐limited ecosystems. Evaluating ammonia loss from agricultural land by model simulation is an important tool of agricultural‐systems analysis. The objective of this study was the systematical comparison of ammonia volatilization after application of two types of biogas slurries containing high amounts of energy crops in comparison with conventional animal slurries and to investigate the relative importance of factors affecting the emission process through an empirical model. A high number of ammonia‐loss field measurements were carried out in the years 2007/08 in biogas cropping systems in N Germany. The study consisted of simultaneous measurement of NH3 losses from animal and biogas slurries in multiple‐plot field experiments with different N‐fertilization levels. The derived empirical model for the calculation of NH3 losses based on explanatory variables gave good predictions of ammonia emission for both biogas and pig slurries. The root mean square error (RMSE) and mean bias error (MBE) of the empirical model for validation data were 2.19 kg N ha–1 (rRMSE 29%) and –1.19 kg N ha–1, respectively. Biogas slurries produced highest NH3 emissions compared to the two animal slurries. In view of the explanatory variables included in the model, total NH$ _4^+ $ application rate, slurry type, temperature, precipitation, crop type, and leaf‐area index were important for ammonia‐volatilization losses.
Examining posttraumatic stress symptoms in a national sample of homicide survivors: Prevalence and comparison to other violence victims
Authors: Zinzow Heidi M. , Rheingold Alyssa A. , Byczkiewicz Michelle , Saunders Benjamin E. , Kilpatrick Dean G. 
Published: November 2011

AbstractThe present study examined posttraumatic stress disorder (PTSD) symptoms among friends and family members of homicide victims (homicide survivors). Out of a national sample of 1,753 young adults who completed follow‐up interviews after participating in the National Survey of Adolescents, 268 homicide survivors and 653 victims of other interpersonal violence were selected for the study. Participants completed structured telephone interviews that covered the loss of a family member or close friend to homicide, violence exposure, and PTSD symptomatology. Findings indicated that 39% of homicide survivors met criteria for all 3 symptom clusters and 30% of homicide survivors met criteria for 2 PTSD clusters (functional impairment was not assessed). Multivariate logistic regression analyses demonstrated that homicide survivors were more likely than victims of other violence to meet criteria for all 3 PTSD symptom clusters (OR = 1.91, p < .05) and 2 symptom clusters (OR = 1.77, p < .05) when demographic characteristics and number of violent events were included in the model. These findings highlight the high prevalence of subthreshold PTSD symptoms among homicide survivors. Results suggest that homicide survivors are at elevated risk for PTSD symptoms in comparison to victims of other interpersonal violence.
Non‐destructive clinical assessment of occlusal caries lesions using near‐IR imaging methods
Authors: Staninec Michal , Douglas Shane M. , Darling Cynthia L. , Chan Kenneth , Kang Hobin , Lee Robert C. , Fried Daniel 
Published: November 2011

AbstractObjectiveEnamel is highly transparent in the near‐IR (NIR) at wavelengths near 1,300 nm, and stains are not visible. The purpose of this study was to use NIR transillumination and optical coherence tomography (OCT) to estimate the severity of caries lesions on occlusal surfaces both in vivo and on extracted teeth.MethodsExtracted molars with suspected occlusal lesions were examined with OCT and polarization sensitive OCT (PS‐OCT), and subsequently sectioned and examined with polarized light microscopy (PLM) and transverse microradiography (TMR). Teeth in test subjects with occlusal caries lesions that were not cavitated or visible on radiographs were examined using NIR transillumination at 1,310 nm using a custom built probe attached to an indium gallium arsenide (InGaAs) camera and a linear OCT scanner. After imaging, cavities were prepared using dye staining to guide caries removal and physical impressions of the cavities were taken.ResultsThe lesion severity determined from OCT and PS‐OCT scans in vitro correlated with the depth determined using PLM and TMR. Occlusal caries lesions appeared in NIR images with high contrast in vivo. OCT scans showed that most of the lesions penetrated to dentin and spread laterally below the sound enamel.ConclusionThis study demonstrates that both NIR transillumination and OCT are promising new methods for the clinical diagnosis of occlusal caries. Lasers Surg. Med. 43:951–959, 2011. © 2011 Wiley Periodicals, Inc.
Ultra‐wideband phase shifter using broadside‐coupled coplanar waveguide structure
Authors: Abbosh Amin M. 
Published: November 2011

AbstractA planar phase shifter with ultra‐wideband performance is presented.The proposed device utilizes a single‐section broadside‐coupled coplanar waveguide structure that can be implemented using a double‐sided printed circuit board. The conformal mapping technique is used to find the proper dimensions of the device. The simulated and measured results of a 45° phase shifter designed using the proposed structure show more than 110% fractional bandwidth with a maximum phase deviation of ±3.3° and maximum insertion loss of 0.8 dB. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:114–116, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26451
A 0.6 V low‐power 3.5‐GHz CMOS low noise amplifier for WIMAX applications
Authors: Tsai Jeng‐Han , Lin Yi‐Jhang , Yu Hao‐Chun 
Published: November 2011

AbstractIn this letter, a low‐voltage and low‐power 3.5‐GHz low noise amplifier (LNA) is designed and fabricated using TSMC 0.18‐μm MS/RF complementary metal‐oxide‐semiconductor field effect transistor (CMOS) technology. The complementary current‐reused topology is utilized to achieve low dc power consumption while maintaining reasonable gain performance. Consuming 1.38 mW dc power from 0.6 V supply, the LNA achieves a small signal gain of 16.09 dB and a noise figure of 4.702 dB at 3.5 GHz. Compared with previously reported LNA, the MMIC has excellent FOM performance. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:145–147, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26463
Microwave imaging using ultra wideband frequency‐domain data
Authors: Bialkowski M. E. , Wang Y. , Bakar A.Abu , Khor W. C. 
Published: November 2011

AbstractThis article describes an ultra wideband (UWB) microwave system that uses the frequency‐domain reflection coefficient data acquired by a UWB antenna to form a microwave image of a homogenous cylindrical dielectric body containing cylindrical targets. Both hardware and signal processing aspects of the system are described. The system uses a frequency‐domain image reconstruction algorithm using the different data obtained for adjacent positions of the scanning antenna so that the effect of air‐image body interface is removed. The algorithm is tested in examples of a cylindrical dielectric container including a vegetable oil and targets in the form of small‐diameter plastic straws filled with water. Both simulated and measured results are presented. The successful detection and location of the targets is achieved by visual inspection of the formed microwave images. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:13–18, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26465
An integral equation model for radiowave propagation over inhomogeneous smoothly irregular terrain
Authors: Batista Cláudio G. , Rego Cássio G. 
Published: November 2011

AbstractThis work introduces an integral equation formulation to model the radiowave propagation over inhomogeneous smoothly irregular terrain. The ground energy loss is estimated via the Leontovich boundary condition and the fast far‐field algorithm accelerating technique is applied in order to improve the computational performance when solving the integral equation. The proposed formulation was implemented in a prediction software named SPRad, which was numerically tested with two measurement campaigns performed in Denmark and Brazil. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:26–31, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26473
The experimental study of mutual coupling in conformal array
Authors: Zhao Fei , Qi Huiying , Xiao Ke , Qiu Lei , Chai Shunlian 
Published: November 2011

AbstractThe problem of the analyzing mutual coupling for the conformal array in practice is addressed. Experiment is designed for the sectoral cylinder conformal array composed of 12 cavity‐backed stacked microstrip antennas. Based on the measurement element complex patterns, the phase pattern calibration technique and least squares method are adopted to calculate the mutual coupling matrix (MCM) for the conformal array. It is shown that the actual array pattern modified by MCM agrees well with the ideal desired pattern, which confirms the validity and accuracy of the calculation of the MCM. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:199–203, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26491
Nonlinear effects in lte downlink signals and application of a compensation technique at the receiver side
Authors: Allegue‐Martínez Michel , Madero‐Ayora María J. , Crespo‐Cadenas Carlos , Reina‐Tosina Javier , Bernardo Francisco 
Published: November 2011

AbstractThis article proposes a nonlinear compensation technique for long‐term evolution downlink signals based on the memoryless solid‐state power amplifier model, which provides a simple and effective linearization technique at the receiver side, allowing a reduction in the error vector magnitude measured characteristics. The error vector magnitude per subcarrier is analyzed for different appropriate resource blocks allocations in the long‐term evolution signal to examine the distortion due to the nonlinear effects produced by a power amplifier in the experimental setup. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:54‐58, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26494
Optical and microwave studies of ferroelectric nanoparticles for application in biomedical imaging
Authors: Lai K. T. , Nair Bindu G. , Semenov S. 
Published: November 2011

AbstractBecause of the unique properties of nanoparticles in the electromagnetic spectrum, its use as diagnostic agents for improved visualization is an emerging research area in biomedical imaging. However specific aspects of nanoparticles need to be explored to illustrate these applications. In this paper we present the dielectric and optical studies performed on propylene carbonate colloid of barium titanate nanoparticles at different volume fractions. The behavior of these nanoparticles at the near infrared optical window and at the industrial, scientific, and medical applications band suggests its potential application as contrast agents or tracers in optical and microwave medical imaging. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:11‐13, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26496
Circularly polarized circular microstrip patch antenna loaded with four shorting posts for nanosatellite applications
Authors: Khotso Patsa , Lehmensiek Robert , van Zyl Robert R. 
Published: November 2011

AbstractA low profile all‐metal mechanically robust circular microstrip patch antenna at S‐band frequencies is presented.The single coaxial feed circularly polarized antenna was optimized for a 3‐unit CubeSat structure. Good correlation between simulated and measured results was obtained. The measured antenna has a maximum gain of 8.9 dBi, and the −10 dB reflection coefficient bandwidth is 5.4%. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:8‐11, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26497