bluuebunny/crossref_metadata_2025_split huggingface dataset:
The impact of workplace factors on filing of workers’ compensation claims among nursing home workers
Authors: Qin Jin , Kurowski Alicia , Gore Rebecca , Punnett Laura 
Published: January 2014

Abstract

Background
Injuries reported to workers’ compensation (WC) system are often used to estimate incidence of health outcomes and evaluate interventions in musculoskeletal epidemiology studies. However, WC claims represent a relatively small subset of all musculoskeletal disorders among employed individuals, and perhaps not a representative subset. This study determined the influence of workplace and individual factors on filing of workers’ compensation claims by nursing home employees with back pain.

Methods
Surveys were conducted in 18 skilled nursing facilities in four U.S. states. Self-administered questionnaires obtained information on demographic characteristics, working environment, and health behaviors/status. Employees who reported low back pain at least once in four questionnaire surveys were included. WC claims from the same facilities were obtained from the employer’s workers compensation insurer and matched by employee name. The dichotomous dependent variable was filing of back-related worker’s compensation claim. Association with predictors of interest, including pain severity, physical job demand, job strain, social support, schedule control, and safety climate, was assessed using multivariate regression modeling. Individual characteristics were tested as potential confounders.

Results
Pain severity level was significantly associated with filing low-back related claims (odds ratio (OR) = 1.49, 95% CI = 1.18 – 1.87). Higher physical demands at work (OR = 1.07, 95% CI = 1.01 – 1.14) also increased the likelihood of claim filing. Higher job strain (OR = 0.83, 95% CI = 0.73 – 0.94), social support at work (OR = 0.90, 95% CI = 0.82 – 0.99), and education (OR = 0.79, 95% CI = 0.71 – 0.89) decreased the likelihood of claim filing.

Conclusions
The results suggest that the WC system captured the most severe occupational injuries. Workplace factors had additional influence on workers’ decision to file claims, after adjusting for low back pain severity. Education was correlated with worker’s socioeconomic status; its influence on claim filing is difficult to interpret because of the possible mixed effects of working conditions, self-efficacy, and content knowledge.
Genetic structure of Plasmodium vivax using the merozoite surface protein 1 icb5-6 fragment reveals new hybrid haplotypes in southern Mexico
Authors: Cerritos René , González-Cerón Lilia , Nettel José A , Wegier Ana 
Published: January 2014

AbstractBackgroundPlasmodium vivaxis a protozoan parasite with an extensive worldwide distribution, being highly prevalent in Asia as well as in Mesoamerica and South America. In southern Mexico,P. vivaxtransmission has been endemic and recent studies suggest that these parasites have unique biological and genetic features. Themsp1gene has shown high rate of nucleotide substitutions, deletions, insertions, and its mosaic structure reveals frequent events of recombination, maybe between highly divergent parasite isolates.MethodsThe nucleotide sequence variation in the polymorphic icb5-6 fragment of themsp1gene of Mexican and worldwide isolates was analysed. To understand how genotype diversity arises, disperses and persists in Mexico, the genetic structure and genealogical relationships of local isolates were examined. To identify new sequence hybrids and their evolutionary relationships with otherP. vivaxisolates circulating worldwide two haplotype networks were constructed questioning that two portions of the icb5-6 have different evolutionary history.ResultsTwelve newmsp1icb5-6 haplotypes ofP. vivaxfrom Mexico were identified. These nucleotide sequences show mosaic structure comprising three partially conserved and two variable subfragments and resulted into five different sequence types. The variable subfragment sV1 has undergone recombination events and resulted in hybrid sequences and the haplotype network allocated the Mexican haplotypes to three lineages, corresponding to the Sal I and Belem types, and other more divergent group. In contrast, the network from icb5-6 fragment but not sV1 revealed that the Mexican haplotypes belong to two separate lineages, none of which are closely related to Sal I or Belem sequences.ConclusionsThese results suggest that the new hybrid haplotypes from southern Mexico were the result of at least three different recombination events. These rearrangements likely resulted from the recombination between haplotypes of highly divergent lineages that are frequently distributed in South America and Asia and diversified rapidly.
Cultural barriers to effective communication between Indigenous communities and health care providers in Northern Argentina: an anthropological contribution to Chagas disease prevention and control
Authors: Dell’Arciprete Ana , Braunstein José , Touris Cecilia , Dinardi Graciela , Llovet Ignacio , Sosa-Estani Sergio 
Published: January 2014

Abstract

Introduction
Ninety percent of the aboriginal communities of Argentina are located in areas of endemic vectorial transmission of Chagas disease. Control activities in these communities have not been effective. The goal of this research was to explore the role played by beliefs, habits, and practices of Pilaga and Wichi indigenous communities in their interaction with the local health system in the province of Formosa. This article contributes to the understanding of the cultural barriers that affect the communication process between indigenous peoples and their health care providers.

Methods
Twenty-nine open ended interviews were carried out with members of four indigenous communities (Pilaga and Wichi) located in central Formosa. These interviews were used to describe and compare these communities’ approach to health and disease as they pertain to Chagas as well as their perceptions of Western medicine and its incarnation in local health practice.

Results
Five key findings are presented: 1) members of these communities tend to see disease as caused by other people or by the person’s violation of taboos instead of as a biological process; 2) while the Pilaga are more inclined to accept Western medicine, the Wichi often favour the indigenous approach to health care over the Western approach; 3) members of these communities do not associate the vector with the transmission of the disease and they have little awareness of the need for vector control activities; 4) indigenous individuals who undergo diagnostic tests and accept treatment often do so without full information and knowledge; 5) the clinical encounter is rife with conflict between the expectations of health care providers and those of members of these communities.

Conclusion
Our analysis suggests that there is a need to consider the role of the cultural patterning of health and disease when developing interventions to prevent and control Chagas disease among indigenous communities in Northern Argentina. This is especially important when communicating with these communities about prevention and control. These research findings might also be of value to national and provincial agencies in charge of decreasing the rates of Chagas disease among indigenous populations.
Chemical characterization by GC-MS and in vitro activity against Candida albicans of volatile fractions prepared from Artemisia dracunculus, Artemisia abrotanum, Artemisia absinthium and Artemisia vulgaris
Authors: Obistioiu Diana , Cristina Romeo T , Schmerold Ivo , Chizzola Remigius , Stolze Klaus , Nichita Ileana , Chiurciu Viorica 
Published: January 2014

AbstractBackgroundA large number of essential oils is reported to have significant activity againstCandida albicans. But the different chemical composition influences the degree of their activity. The intention of this study was to investigate the chemical composition and the activity againstCandida albicansof volatile oils obtained fromArtemisia dracunculus,A. abrotanum,A. absinthiumandA. vulgaris(Asteraceae). The aim of the study was to identify new chemical compounds that have effect againstC. albicans.The essential oils were obtained by hydrodistillation or extraction with dichloromethane (a new procedure we developed trying to obtain better, more separated compounds) from air dried above ground plant material and analyzed by GC-MS. Additionally commercial essential oils from the same species were tested. TheCandida albicansinhibition studies were carried out by the paper disc diffusion method.ResultsThe essential oils shared common components but presented differences in composition and showed variable antifungal activity. Davanone and derivatives thereof, compounds with silphiperfolane skeleton, estragole, davanone oil, β-thujone, sabinyl acetate, herniarin, cis-chrysanthenyl acetate, 1,8-cineol, and terpineol were the main components ofArtemisiavolatiles.ConclusionsAmong the volatile fractions tested those fromA. abrotanumcontaining davanone or silphiperfolane derivatives showed the highest antifungal activity. Thein vitrotests revealed that theArtemisiaoils are promising candidates for further research to develop novel anti-candida drugs.
Association of methylenetetrahytrofolate reductase (MTHFR) C677T and A1298C polymorphisms with the susceptibility of childhood acute lymphoblastic leukaemia (ALL) in Chinese population
Authors: Li Xiaolei , Liao Qingchuan , Zhang Shunguo , Chen Minling 
Published: January 2014

Abstract

Background
The aim of this study was to investigate the relationship between the polymorphisms of the methylenetetrahytrofolate reductase (MTHFR) gene and susceptibility to childhood acute lymphoblastic leukemia (ALL).

Methods
A case–control study was conducted among 98 children with ALL and 93 age- and sex- matched non-ALL controls. Genotyping of MTHFR C677T and A1298C polymorphisms was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The odds ratios (ORs) of MTHFR genotypes were used to assess the associations of these polymorphisms with childhood ALL susceptibility.

Results
No significant differences were observed for frequencies of the 677CC, 677CT and 677TT genotypes between patients and controls. Frequencies of the 1298AA, 1298 AC and 1298CC genotypes between the two groups were significantly different. The risk of ALL with the 1298C allele carriers (AC + CC) was elevated by 1.1 times compared with the AA genotype [OR = 2.100; 95% CI (1.149; 3.837); P = 0.015].

Conclusions
The MTHFR A1298C polymorphism is associated with susceptibility to childhood ALL in the Chinese population.
The study of Nickel Resistant Bacteria (NiRB) isolated from wastewaters polluted with different industrial sources
Authors: Alboghobeish Hoda , Tahmourespour Arezoo , Doudi Monir 
Published: January 2014

Abstract

Background
Pollution due to the heavy metals is a problem that may have negative consequences on the hydrosphere. One of the best procedures in removing the toxic metals from the environment is using metal resistant bacteria.

Results
In the present study eight nickel resistant bacteria were isolated from industrial wastewaters. Three of them were selected as the most resistant based on their Maximum tolerable concentration (8, 16 and 24 mM Ni2+). Their identification was done according to morphological, biochemical characteristics and 16SrDNA gene sequencing and they were identified as Cupriavidus sp ATHA3, Klebsiella oxytoca ATHA6 and Methylobacterium sp ATHA7. The accession numbers assigned to ATHA3, ATHA6 and ATHA7 strains are JX120152, JX196648 and JX457333 respectively. The Growth rate of the most resistant isolate, Klebsiella oxytoca strain ATHA6, in the presence of Ni2+ and the reduction in Ni2+ concentration was revealed that K oxytoca ATHA6 could decrease 83 mg/mL of nickel from the medium after 3 days.

Conclusion
It can be concluded that the identified Ni resistant bacteria could be valuable for the bioremediation of Ni polluted waste water and sewage.
Migration and aspirations – are migrants trapped on a hedonic treadmill?
Authors: Czaika Mathias , Vothknecht Marc 
Published: January 2014

Abstract
Based on longitudinal information from two waves of the Indonesian Family and LifeSurvey (IFLS) in 2000 and 2007, we find evidence that migrants are self-selectedalong higher individual aspirations acquired (or, inherited) beforemigration. About 70 per cent of aspiration differentials can be explained by factorssuch as young age, good education, or superior socio-economic background, while theresidual seems to be linked to an individual pre-disposition for higher aspirations.However, despite the fact that migration is economically beneficial for mostmigrants, the migration experience itself seems to further increase economicaspirations, hereby trapping migrants on a ‘hedonic treadmill’.

JEL classification: D03; J61; R23
Membrane wrinkling revisited from a multi-scale point of view
Authors: Damil Noureddine , Potier-Ferry Michel , Hu Heng 
Published: January 2014

Abstract

Background
Membrane modeling in the presence of wrinkling is revisited from a multi-scale point of view. In the engineering literature, wrinkling is generally accounted at a macroscopic level by nonlinear constitutive laws without compressive stiffness, but these models ignore the properties of wrinkles, such as their wavelength, their size and spatial distribution.

Methods
A new multi-scale approach is discussed that belongs to the family of Ginzburg- Landau bifurcation equations. By using the method of Fourier series with variable coefficients, several nonlinear macroscopic models are derived that couple the membrane response with equations governing the evolution of the wrinkles.

Results
Contrary to previous approaches, these macroscopic models are completely deduced from the “microscopic” shell model without any phenomenological assumptions. Some analytical and numerical solutions are discussed that prove the relevance of the presented modeling.

Conclusions
A new class of models has been established. It permits to predict the characteristics of the wrinkles and their influence on membrane behavior.
Notochordal cell disappearance and modes of apoptotic cell death in a rat tail static compression-induced disc degeneration model
Authors: Yurube Takashi , Hirata Hiroaki , Kakutani Kenichiro , Maeno Koichiro , Takada Toru , Zhang Zhongying , Takayama Koji , Matsushita Takehiko , Kuroda Ryosuke , Kurosaka Masahiro , Nishida Kotaro 
Published: January 2014

Abstract
Introduction
The intervertebral disc has a complex structure originating developmentally from both the mesenchyme and notochord. Notochordal cells disappear during adolescence, which is also when human discs begin to show degenerative signs. During degeneration later in life, disc cells decline because of apoptosis. Although many animal models have been developed to simulate human disc degeneration, few studies have explored the long-term changes in cell population and phenotype. Our objective was to elucidate the time-dependent notochordal cell disappearance and apoptotic cell death in a rat tail static compression-induced disc degeneration model.

Methods
Twenty-four 12-week-old male Sprague–Dawley rat tails were instrumented with an Ilizarov-type device and loaded statically at 1.3 MPa for up to 56 days. Loaded and distal-unloaded discs were harvested. Changes in cell number and phenotype were assessed with histomorphology and immunofluorescence. Apoptosis involvement was determined with terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining and immunohistochemistry.

Results
The number of disc nucleus pulposus and annulus fibrosus cells decreased with the loading period; particularly, the decrease was notable at day 7 in larger, vacuolated, cytokeratin-8- and galectin-3-co-positive cells, indicating notochordal origin. Subsequently, the proportion of cells positive for TUNEL and cleaved caspase-3, markers of apoptosis induction, increased from day 7 through day 56. Although the percentage of cells immunopositive for cleaved caspase-8, a marker of apoptosis initiation through the death-receptor pathway, increased only at day 7, the percentage of cells immunopositive for cleaved caspase-9 and p53-regulated apoptosis-inducing protein 1 (p53AIP1), markers of apoptosis initiation through the p53-mediated mitochondrial pathway, increased from day 7 through day 56. The percentage of cells immunopositive for B-cell lymphoma 2 (Bcl-2) and silent mating type information regulation 2 homolog 1 (SIRT1), antiapoptotic proteins, decreased consistently with compression.

Conclusions
This rat tail model mimics notochordal cell disappearance and apoptotic cell death in human disc aging and degeneration. Sustained static compression induces transient activation of apoptosis through the death-receptor pathway and persistent activation of apoptosis through the p53-mediated mitochondrial pathway in disc cells. The increased proapoptotic and decreased antiapoptotic proteins observed at all time points signify static compression-induced disc cell death and degeneration.
Static Klein–Gordon–Maxwell–Proca systems in 4-dimensional
closed manifolds. II
Authors: Druet Olivier , Hebey Emmanuel , Vétois Jérôme 
Published: January 2014

Abstract
We discuss static Klein–Gordon–Maxwell–Proca systems
in the critical case of 4-dimensional closed manifolds in the continuation of
Hebey–Truong [J. reine angew. Math. 667 (2012), 221–248]. We prove phase stability for all possible phases in the nonpositively curved case, and in the positively curved case when the phase lies in some set that we show to be
maximal in the case of the round sphere.
Effects of thermal modification on wood ultrastructure analyzed with crystallographic texture
Authors: Olek Wiesław , Bonarski Jan T. 
Published: January 2014

Abstract
The changes in ultrastructure of thermally modified beech and poplar wood have been studied by means of the crystallographic texture analysis. The experimental pole figures have been registered based on the X-ray diffraction (XRD). The 3D texture function, i.e., the orientation distribution function (ODF) was calculated with the use of the procedure implemented for materials with the monoclinic lattice symmetry. The inverse pole figures were recalculated from the obtained ODF. Areas with specific crystallographic organization in wood were identified and gradual changes in intensities of moderately oriented areas were observed. Simultaneously, additional reorganization of crystalline cellulose was observed as a result of heat treatment. The integrated skeleton lines confirmed the gradual decomposition of hemicelluloses as well as the temporary increase of cellulose self-organization.
The extended reductive acetyl-CoA pathway: ATPases in metal cluster maturation and reductive activation
Authors: Jeoung Jae-Hun , Goetzl Sebastian , Hennig Sandra Elisabeth , Fesseler Jochen , Wörmann Christina , Dendra Julia , Dobbek Holger 
Published: January 2014

Abstract
The reductive acetyl-coenzyme A (acetyl-CoA) pathway, also known as the Wood-Ljungdahl pathway, allows reduction and condensation of two molecules of carbon dioxide (CO2) to build the acetyl-group of acetyl-CoA. Productive utilization of CO2 relies on a set of oxygen sensitive metalloenzymes exploiting the metal organic chemistry of nickel and cobalt to synthesize acetyl-CoA from activated one-carbon compounds. In addition to the central catalysts, CO dehydrogenase and acetyl-CoA synthase, ATPases are needed in the pathway. This allows the coupling of ATP binding and hydrolysis to electron transfer against a redox potential gradient and metal incorporation to (re)activate one of the central players of the pathway. This review gives an overview about our current knowledge on how these ATPases achieve their tasks of maturation and reductive activation.
Histological evaluation of socket preservation with different bone grafting materials
Authors: Salamanca Eisner , Lin Hsi-Kuei , Feng Sheng-Wei , Huang Haw-Ming , Teng Nai-Chia , Chang Wei-Jen 
Published: January 2014

Abstract
The aim of this study was to compare different bone grafting materials and their contribution to socket preservation. In six beagle dogs, bilateral mandibular second, third, and fourth premolars were hemisectioned and extracted. The following four treatment modalities were randomly allocated: (1) empty control site, (2) collagen plug, (3) Bio Oss-collagen, (4) HA/β-TCP-collagen. After 2 and 4 weeks, the animals were sacrificed, and decalcified sections were obtained for histological analysis. New bone formation was homogeneous, progressive, and centripetal in all materials. Remodeling as well as the calcification of the newly formed bone was observed. In addition, well-connected trabeculae surrounding the degraded materials were observed. Nearly mature bone, which demonstrated less cellular, more mineralized, and structurally more organized into lamellar bone was noted in HA/β-TCP-collagen composite. In this study, Bio Oss-collagen and HA/β-TCP-collagen produced a newly biomimetic composite biomaterial and could prove to be a superior bone substitute material, both structurally and functionally, which could be used in the repair of bone defects collagen composite.
Effects of Psyching-Up on Sprint Performance
Authors: Hammoudi-Nassib Sarra , Nassib Sabri , Chtara Moktar , Briki Walid , Chaouachi Anis , Tod David , Chamari Karim 
Published: January 2014

Abstract
Hammoudi-Nassib, S, Nassib, S, Chtara, M, Briki, W, Chaouachi, A, Tod, D, and Chamari, K. Effects of psyching-up on sprint performance. J Strength Cond Res 31(8): 2066–2074, 2017—The present research aimed at examining whether the psyching up (PU) strategies improve performance in 30-m sprinting. Sixteen male sprinters (age, 20.6 ± 1.3 years; body mass, 77.5 ± 7.1 kg; height, 180.8 ± 5.6 cm) participated in this study. Before each experimental session, the Hooper index was used to monitor the subject’s feeling for the quality of sleep of the previous night, perceived quantity of stress, delayed onset muscle soreness, and fatigue. After completing general and specific warm-up, participants had to rate their degree of self-confidence. Then, they were asked to follow 1 of these 4 conditions: Imagery (experimental PU condition), Preparatory arousal (experimental PU condition), Attention placebo (control condition), and Distraction (control condition) during the final 30 seconds of the rest period right before performing a 30-m sprint. Participants separately and randomly performed all conditions. Results showed that although the imagery and preparatory arousal strategies contributed to increase the performance in the short-distance sprints (from 0 to 10 m), the imagery strategy contributed to increase the performance in the 30-m sprints. These findings support the general view that the PU strategies could improve athletic performance.
Microwave reflection study of ultra-high mobility GaAs/AlGaAs 2D-electron system at large filling factors
Authors: Ye Tianyu , Mani Ramesh , Wegscheider Werner 
Published: January 2014

ABSTRACTThe microwave-induced magnetoresistance oscillations are exhibited by the GaAs/AlGaAs two dimensional electron system (2DES) under microwave and terahertz photo-excitation at liquid helium temperatures. Such oscillations are presently understood in terms of various theories. In order to identify the relative physical contributions, we have concurrently examined magnetotransport and microwave reflection from the 2DES. For the reflection measurements, a sensitive microwave detector was assimilated into the standard experimental setup. Here, we correlate changes in reflection with the concurrent transport response of the photo-excited 2DES.