bluuebunny/crossref_metadata_2025_split huggingface dataset:
Predictors of mortality after total knee replacement
Authors: Clement N. D. , Jenkins P. J. , Brenkel I. J. , Walmsley P. 
Published: February 2012

We report the general mortality rate after total knee replacement and identify independent predictors of survival. We studied 2428 patients: there were 1127 men (46%) and 1301 (54%) women with a mean age of 69.3 years (28 to 94). Patients were allocated a predicted life expectancy based on their age and gender. There were 223 deaths during the study period. This represented an overall survivorship of 99% (95% confidence interval (CI) 98 to 99) at one year, 90% (95% CI 89 to 92) at five years, and 84% (95% CI 82 to 86) at ten years. There was no difference in survival by gender. A greater mortality rate was associated with increasing age (p < 0.001), American Society of Anesthesiologists (ASA) grade (p < 0.001), smoking (p < 0.001), body mass index (BMI) < 20 kg/m2 (p < 0.001) and rheumatoid arthritis (p < 0.001). Multivariate modelling confirmed the independent effect of age, ASA grade, BMI, and rheumatoid disease on mortality. Based on the predicted average mortality, 114 patients were predicted to have died, whereas 217 actually died. This resulted in an overall excess standardised mortality ratio of 1.90. Patient mortality after TKR is predicted by their demographics: these could be used to assign an individual mortality risk after surgery.
Transition Planning for Students With Intellectual Disability, Autism, or Other Disabilities: Data from the National Longitudinal Transition Study-2
Authors: Shogren Karrie A , Plotner Anthony J 
Published: February 2012

AbstractTo compare the status of transition planning for students with intellectual disability, autism, or other disabilities, we used data from the National Longitudinal Transition Study-2, a federally funded, national study of the secondary and postschool experiences of students with disabilities. Results show that although transition planning had been conducted for the majority of students, few of them took a leadership role in their transition planning. Students with autism or intellectual disability were significantly less likely than students with other disabilities to take a leadership role. The majority of the active participants in transition planning were school-based personnel. We also found limited participation from other agencies/support persons (e.g., vocational rehabilitation). Students with autism or intellectual disability had more identified needs for support after school than did students with other disabilities.
Factors Associated With Self-Concept: Adolescents With Intellectual and Development Disabilities Share their Perspectives
Authors: Jones Jennifer L 
Published: February 2012

Abstract
How one perceives the self is critical to long-term development. The purpose of this study was to explore the self-perceptions of adolescents with intellectual and developmental disabilities. Participants included 51 adolescents with intellectual and developmental disabilities, their parents (n  =  50), and teachers (n  =  12). A mixed-methods design was used. Qualitative interviews revealed that although 55% of participants self-identified as having a disability, there was a lack of constructive or affirmative language used to describe disability. Overall, adolescents' understanding of disability appeared to be grounded in a deficit model. Quantitative analyses were used to explore demographic variables, adolescent' perception of parent support, and self-determination as possible predictors of global self-worth and social acceptance. Results indicate that family income and parent support are particularly salient for this population.
Employment and Self-Management: A Meta-Evaluation of Seven Literature Reviews
Authors: Rusch Frank R , Dattilo John 
Published: February 2012

Abstract
Efforts focused on teaching individuals with intellectual disabilities to manage their own affairs have evolved over the past 30 years. Self-management strategies, in particular, hold much promise when the goal is to promote self-determination. In this article, the authors describe trends in the evolution of self-management strategies by analyzing seven literature reviews. The authors conclude with thoughts related to jump-starting an intervention that has appeared to lose momentum, namely, self-management.
Persistence of the {…HOCO…HCN} heterosynthon in the co-crystals formed between anthranilic acid and three bipyridine-containing molecules
Authors: Arman Hadi D. , Kaulgud Trupta , Miller Tyler 
Published: February 2012

Abstract
Co-crystals formed between anthranilic acid and each of 4,4′-bipyridine (1), 1,2-trans-1,2-bis(4-pyridyl)ethene (2) and 1,2-bis(4-pyridyl)ethane (3) have been formed from solutions containing 2:1 stoichiometric quantities of the reagents. Each structure features a centrosymmetric three-molecule aggregate mediated by O—H…N(pyridyl) hydrogen bonds indicating the robustness of the seven-membered {…HOCO…HCN} heterosynthon. The structures of (1)–(3) are isomorphous whereby the three-molecule aggregates are connected into flattened helical chains by amino-N—H…O(carbonyl) hydrogen bonds; the chains are consolidated into the three-dimensional structure by π…π interactions. The magnitude of the O—H…N hydrogen bonds in (1)–(3) are correlated with the basicity of the pyridine residue.
Development and characterization of nanocomposites with gold nanoparticles embedded in the nanostructured silicon substrate.
Authors: Gayou V. L. , Orduña Diaz A. , Delgado Macuil R. , Rojas López M. , Andraca-Adame J.A. , Agarwal Vivechana 
Published: February 2012

ABSTRACTIn the present work an alternative nanoparticle synthesis technique was developed, where the nanoparticles nucleate and grow inside the pores of the nanostructured porous silicon (NPS). Employing green method for the nanoparticle synthesis, yeast extract is used as a reducing agent. The porous layers were prepared by electrochemical etching of Boron-doped (100) Si substrate (0.01-0.02Ohm·cm). The NPS support was immersed into the reactive colloid for different times, then withdrawn, cleaned and dried. SEM and XRD measurements were carried out to characterize the NPS substrate and the immobilized catalyst nanoparticles. EDX mapping shows a homogeneous deposition of nanoparticles on the porous support. The average particle size, calculated from XRD diffractograms (using the Scherrer`s formula), was found between 6 to 10 nm. This method provides a good incorporation and distribution of nanoparticles, also an alternative environment-friendly technique to develop catalytic devices fabricated on silicon substrate with an additional advantage of being integrated with the silicon based microelectronic circuits.
Properties of Composite Membranes of SPEEK and Nanodiamond
Authors: Hou Hongying , Maranesi Brunella , Khadhraoui Mustapha , Knauth Philippe , Polini Riccardo , Di Vona M. Luisa 
Published: February 2012

AbstractThe manufacture of composite materials can improve the properties of proton-conducting polymers as membranes in PEM fuel cells. We have investigated composite membranes obtained by dispersion of nanodiamond particles in a sulfonated PolyEtherEtherKetone (SPEEK) matrix. SPEEK is a major proton-conducting aromatic polymer. Nanodiamond has been studied for various applications and can be functionalized with different surface groups. For use in proton-conducting membranes, surface functionalization with proton-donating groups is a promising approach. In this preliminary work, we have studied the properties of membranes made using pristine nanodiamond from diverse origins for a first assessment of the potential properties. The composites were analysed by various techniques, including Thermogravimetric Analysis, water vapor uptake and mechanical tensile tests.
Fixed Contamination on Steel Surfaces: First Use of Quartz Crystal Microgravimetry to Measure Oxide Growth on Process Steels Under Conditions Typical of Nuclear Reprocessing.
Authors: Woodhouse Rebecca C. , Wilbraham Richard J. , Boxall Colin 
Published: February 2012

ABSTRACTDuring the lifetime of a nuclear facility, radioactive material may become deposited onto process and structural material surfaces. Due to their high corrosion resistance, steels comprise the largest class of metal-based materials encountered on nuclear sites. A greater understanding of the mechanisms of how contaminant radionuclides interact with and attach to process steels in nuclear plant environments is required in order to enable informed decisions to be made about the design and effective application of decontamination techniques, reducing secondary wastes.There is limited literature relating to radionuclide sorption mechanisms on steels. Key studies have found that sorbed contamination is almost entirely located in the outermost oxide layers formed at steel surfaces. Thus, a molecular level investigation of contaminant uptake during induced oxide formation would be beneficial in developing steel decontamination strategies.Stainless steel 316L is commonly employed in the nuclear industry in process streams and pipework. Thus, we describe work carried out on electrochemically accelerated oxide growth on 316L and SS2343 (a 316L analog) in nitric acid media and its characterisation using combined voltammetric and microgravimetric measurements. These allow identification of active, passive, high voltage passive, transpassive and secondary passivation regimes in the associated current voltage curves. EQCM on SS2343 coated quartz crystal piezoelectrodes, combined with potentiodynamic polarisation data have allowed us to determine that fastest net growth of surface oxide occurs in the low voltage passive regime. Further, we have directly measured the growth of that layer by using in situ microgravimetry for the first time. We will be shortly using the methods described above and radionuclide surrogates for the study of contaminant uptake during oxide formation and uptake onto preformed oxide layers. XPS will be used to determine layer composition and mode of contaminant uptake.
Photoluminescence due to Group IV impurities in ZnO
Authors: Cullen J. , Johnston K. , Henry M. O. , McGlynn E. 
Published: February 2012

ABSTRACTWe report the results of photoluminescence measurements on ZnO bulk crystals implanted with both stable and radioactive species involving the group IV impurities Ge, Si and Sn. We previously confirmed the identity of a line emerging at 3.3225 eV as being related to Ge and present here uniaxial stress data which show that the defect responsible has trigonal symmetry. Experiments with Si provide circumstantial evidence of a connection with the well-known line at 3.333 eV. Our measurements indicate that for the case of Sn on the Zn site luminescence is not observed. We also confirm that the I9 and I2 lines are due to substitutional In impurities.
Postoperative Evaluation of Grafted Bone in Alveolar Cleft Using Three-Dimensional Computed Tomography Data
Authors: Yoshida Shuji , Suga Kenichiro , Nakano Yoko , Sakamoto Teruo , Takaki Takashi , Uchiyama Takeshi 
Published: February 2012

Objective Postoperative evaluation of bone formation in the alveolar cleft by computed tomography imaging has been reported. We quantitatively evaluated bone grafts in the alveolar cleft preoperatively and postoperatively using three-dimensional data and superimposition of images. Subjects A total of 12 patients with complete unilateral cleft lip and palate (six left-sided and six right-sided) were studied. Methods Helical computed tomography scans were taken immediately before surgery and at 6 months after surgery and the DICOM files obtained were processed using Mimics and 3-matic software for three-dimensional data analysis. The preoperative and postoperative computed tomography data were superimposed, and the position and length of the unerupted canines and width of the alveolar cleft measured. Results Strong and significant correlations were observed between bone formation in the alveolar cleft bone graft region and preoperative canine position ( r = –.766, p < .01) and canine length ( r = .681, p < .05). Stepwise multiple regression analysis demonstrated that only the preoperative canine position was independently and significantly correlated with bone formation in the alveolar cleft. Conclusion These results indicate that the optimal timing for surgery is when the canine cusp is close to the alveolar plane.
Psychosocial Outcomes in Children with and without Non-Syndromic Craniosynostosis: Findings from Two Studies
Authors: Cloonan Yona K. , Collett Brent , Speltz Matthew L. , Anderka Marlene , Werler Martha M. 
Published: February 2012

Objective To evaluate the hypothesis that children with craniosynostosis and their parents have differences in psychosocial outcomes, as compared with an unaffected control group. Design Two studies were conducted, both which followed children born with and without craniosynostosis. Study 1 ascertained affected children from clinics, and study 2 ascertained affected children from a population-based study of birth defects. Participants Study 1 included 22 children with single-suture craniosynostosis and 18 controls, ages 4 to 5 years. Study 2 included 24 children with nonsyndromic craniosynostosis and 124 unaffected controls, ages 5 to 9 years. Main Outcome Measures Outcome measures included the Child Behavior Checklist, Social Competence Scale, Pediatric Quality of Life Inventory, and Parenting Stress Index. Results We observed lower scores on measures of health-related quality of life in cases versus controls, with adjusted effect sizes ranging from −0.72 to −0.44 ( p < .05) on summary measures. Small but statistically nonsignificant increases in behavioral problems were observed in cases versus controls, with no apparent differences in social competence or parenting stress. Conclusions Results provide preliminary evidence suggesting that children with nonsyndromic craniosynostosis may have elevated risk for psychosocial difficulties, particularly health-related quality of life. Continued follow-up through preadolescence and adolescence is warranted.
Hydrophilic interaction chromatography in drug analysis
Authors: Ares Ana , Bernal José 
Published: February 2012

Abstract
Hydrophilic interaction chromatography (HILIC) is an increasingly popular alternative to conventional HPLC for drug analysis. It offers increased selectivity and sensitivity, and improved efficiency when quantifying drugs and related compounds in complex matrices such as biological and environmental samples, pharmaceutical formulations, food, and animal feed. In this review we summarize HILIC methods recently developed for drug analysis (2006–2011). In addition, a list of important applications is provided, including experimental conditions and a brief summary of results. The references provide a comprehensive overview of current HILIC applications in drug analysis.
Recent theoretical and practical applications of micellar liquid chromatography (MLC) in pharmaceutical and biomedical analysis
Authors: Kawczak Piotr , Bączek Tomasz 
Published: February 2012

Abstract
Micellar liquid chromatography (MLC) is an analytical technique belonging to the wide range of reversed-phase liquid chromatographic (RP-LC) separation techniques. MLC with the use of surfactant solutions above its critical micellar concentration (CMC) and the addition of organic modifiers is currently an important analytical tool with still growing theoretical considerations and practical applications in pharmaceutical analysis of drugs and other biologically active compounds. The use of MLC as an alternative, relatively much faster in comparison to conventional chromatographic separation techniques has several advantages, especially as being suitable for screening pharmaceutical analysis. The analytical data received from MLC analysis are considered a useful source of information to predict passive drug absorption, drug transport and other pharmacokinetics and physicochemical measures of pharmaceutical substances. In the review several MLC assays for determination of drugs and other active compounds in biological samples were compared and critically discussed. The presented overview provides information on recent applications and achievements connected with the practical use of MLC. The review covers fields of interest related to theory and mechanism of MLC separation, direct applications of MLC in pharmaceutical analysis, including optimization and efficiency of separation with the use of modification of stationary phase and mobile phase compositions as well as the determination of physicochemical characteristics of drugs by MLC.
Recent progress for capillary electrophoresis with electrochemical detection
Authors: Yu Huan , Xu Xiaoyu , Sun Jinying , You Tianyan 
Published: February 2012

Abstract
Capillary electrophoresis (CE) is an attractive technique in separation science because of its high separation performance, short analysis time and low cost. Electrochemical detection (EC) is a powerful tool for CE because of its high sensitivity. In this review, developments of CE-EC from 2008 to August, 2011 are reviewed. We choose papers of innovative and novel results to demonstrate the newest and most important progress in CE-EC.
Purification, characterization and induction of a C-type lectin in the freshwater planarian Dugesia japonica
Authors: Pang Qiuxiang , Liu Xuemei , Zhao Bosheng , Wei Wei , Zhang Xiufang , Zhao Lianfei , Xie Jingjing , Sun Huanhuan 
Published: February 2012

Abstract
Lectins are important components of the immune defense system of invertebrates. Given their important functions, numerous investigations have been carried out on the characterization and function of lectins in invertebrates. However, lectin studies with the freshwater planarian, an evolutionarily important animal, are rare. In this paper, we demonstrate agglutination of glutaraldehyde treated erythrocytes by a lectin with preference for rabbit erythrocytes. The result of hemagglutinating activity inhibition assays with several carbohydrates showed the most potent inhibitor was maltose. A natural lectin from the crude homogenates of freshwater planarian Dugesia japonica was purified by single step affinity chromatography using amylose-coupled agarose. The purified protein appeared as one band with a molecular mass of 350 kDa in PAGE, and as one band, approximately 56 kDa, in SDS-PAGE. The purified lectin showed dependence on calcium. The activity of the purified lectin was inhibited at temperatures greater than 50°C and showed a pH optimum between 5–8. The purified lectin also has binding activity to the Gram-negative bacteria E. coli, and the Gram-positive bacteria B. subtilis. Furthermore, the purified lectin obtained from injured and bacteria-induced planarians showed increased agglutinating activity against rabbit erythrocytes. These results suggest that the purified lectin may play an important role in the innate immunity of the freshwater planarian.
Atypical non-lipid-dependent strains of Malassezia furfur
Authors: Zinkeviciene Aukse , Norkunas Vilmantas , Citavicius Donaldas 
Published: February 2012

Abstract
Members of the yeast genus Malassezia, including atypical strains, are lipophilic except for Malassezia pachydermatis. New physiological features that characterize atypical Malassezia strains are mainly associated with alteration in Tween assimilation pattern — such isolates still require lipids for growth. We isolated three non-lipid-dependent strains of Malassezia from patients with diagnosed atopic dermatitis (AD). These isolates could not be identified to the species level via their physiological properties. Phylogenetic trees, based on the D1/D2 regions of the 26S rDNA gene sequences and nucleotide sequences of the ITS1-5.8S-ITS2 rRNA region, showed the isolates to belong to Malassezia furfur. Three non-lipid dependent isolates from AD skin were conspecific, and sequences analysis proved them to be M. furfur.
A review of concepts regarding the origin of respiratory muscle fatigue
Authors: Kuraszkiewicz Bożena , Piotrkiewicz Maria 
Published: February 2012

A review of concepts regarding the origin of respiratory muscle fatigue
In this review, the classification of respiratory muscle fatigue from the perspective of its origin is presented. The fatigue is classified as central or peripheral, and the latter further subdivided into high- and low-frequency fatigue. However, muscle fatigue is a complex process and all three types of fatigue probably occur simultaneously in the overloaded respiratory muscles. The relative importance of each type depends on the duration of respiratory loading and other physiological variables. However, central and high-frequency fatigue resolve rapidly once muscle overload is removed, whereas low-frequency fatigue persists over long time.
Identification of the effects of peripheral nerves injury on the muscle control - A review
Authors: Cabaj Anna , Zmyslowski Wojciech 
Published: February 2012

Identification of the effects of peripheral nerves injury on the muscle control - A review
Impairment of motor function following peripheral nerve injury is a serious clinical problem. Generally nerve injury leads to erroneous control of muscle activity that results in gait and voluntary movement abnormalities followed by muscle atrophy. This article presents a review of studies on the effects of peripheral nerve injury on the motor system performed on animal models. We focused our attention on the results that are fundamental for better understanding of the degenerative and regenerative processes induced by nerve injury as well as of the mechanisms of structural changes in neuronal networks controlling movement. Quoted results are also important for clinical applications because they allow to develop new diagnostic and therapeutic techniques that can be used after nerve injury inducing motor deficits. However, till now no efficient therapy inducing satisfactory recovery was found. There is still a need to continue an advanced basic research directed to develop effective therapies. Thus the aim of this review is to compare the results of recent studies performed on various animal models in order to propose new methods for identification of mechanisms responsible for muscle deficits and propose targets for new pharmacological therapies.
The Role of Employee Relations in the Level of Internal Integration between Logistics and Marketing Functions: the Case of Slovenian Retail Companies
Authors: Topolšek Darja , Čurin Andreja 
Published: February 2012

The Role of Employee Relations in the Level of Internal Integration between Logistics and Marketing Functions: the Case of Slovenian Retail Companies
Negative employee relations in companies are a ubiquitous phenomenon which, on one hand, may result in dissatisfaction and inefficiency of employees and, on the other hand, disappointing work results. The basis of research work for the following paper forms a definition of internal integration and its level as well as connection with the level of efficiency of inter-functional relations. The empirical part of the research paper examines the influence positive relations between functions may have on the level of internal integration. More specifically, the analysis focuses on employee relations from logistics and marketing functions. The research is based on the quantitative analysis of data acquired from a survey carried out at Slovenian retail companies.
Clustered Approach to ICT Services Utilization Analysis
Authors: Doucek Petr , Novotný Ota 
Published: February 2012

Clustered Approach to ICT Services Utilization Analysis
The paper describes clustered approach to ICT services utilization analysis based on the WSA method. It allows extracting coherent groups of countries with nearly the same level of ICT services utilization based on the number of indicators analyzed. Approach is explained on case of the Czech Republic and its position in the European peloton with using available Eurostat data.