bluuebunny/crossref_metadata_2025_split huggingface dataset:
Positive effect of removal of subchondral bone plate for cemented acetabular component fixation in total hip arthroplasty
Authors: Flivik G. , Kristiansson I. , Ryd L. 
Published: January 2015

We hypothesised that the removal of the subchondral bone plate (SCBP) for cemented acetabular component fixation in total hip arthroplasty (THA) offers advantages over retention by improving the cement-bone interface, without jeopardising implant stability. We have previously published two-year follow-up data of a randomised controlled trial (RCT), in which 50 patients with primary osteoarthritis were randomised to either retention or removal of the SCBP. The mean age of the retention group (n = 25, 13 males) was 70.0 years (sd 6.8). The mean age in the removal group (n = 25, 16 males) was 70.3 years (sd 7.9). Now we have followed up the patients at six (retention group, n = 21; removal group, n = 20) and ten years (retention group: n = 17, removal group: n = 18), administering clinical outcome questionnaires and radiostereometric analysis (RSA), and determining the presence of radiolucent lines (RLLs) on conventional radiographs. RSA demonstrated similar translation and rotation patterns up to six years. Between six and ten years, proximal acetabular component migration and changes of inclination were larger in the retention group, although the mean differences did not reach statistical significance. Differences in migration were driven by two patients in the SCBP retention group with extensive migration versus none in the SCBP removal group. The significant difference (p < 0.001) in the development of radiolucent lines in the retention group, previously observed at two years, increased even further during the course of follow-up (p < 0.001). While recognising SCBP removal is a more demanding technique, we conclude that, wherever possible, the SCBP should be removed to improve the cement–bone interface in order to maximise acetabular component stability and longevity.Cite this article: Bone Joint J 2015;97-B:35–44.
A comparison of patient-specific and conventional instrumentation for total knee arthroplasty
Authors: Abane L. , Anract P. , Boisgard S. , Descamps S. , Courpied J. P. , Hamadouche M. 
Published: January 2015

In this study we randomised 140 patients who were due to undergo primary total knee arthroplasty (TKA) to have the procedure performed using either patient-specific cutting guides (PSCG) or conventional instrumentation (CI).The primary outcome measure was the mechanical axis, as measured at three months on a standing long-leg radiograph by the hip–knee–ankle (HKA) angle. This was undertaken by an independent observer who was blinded to the instrumentation. Secondary outcome measures were component positioning, operating time, Knee Society and Oxford knee scores, blood loss and length of hospital stay.A total of 126 patients (67 in the CI group and 59 in the PSCG group) had complete clinical and radiological data. There were 88 females and 52 males with a mean age of 69.3 years (47 to 84) and a mean BMI of 28.6 kg/m2(20.2 to 40.8). The mean HKA angle was 178.9° (172.5 to 183.4) in the CI group and 178.2° (172.4 to 183.4) in the PSCG group (p = 0.34). Outliers were identified in 22 of 67 knees (32.8%) in the CI group and 19 of 59 knees (32.2%) in the PSCG group (p = 0.99). There was no significant difference in the clinical results (p = 0.95 and 0.59, respectively). Operating time, blood loss and length of hospital stay were not significantly reduced (p = 0.09, 0.58 and 0.50, respectively) when using PSCG.The use of PSCG in primary TKA did not reduce the proportion of outliers as measured by post-operative coronal alignment.Cite this article: Bone Joint J 2015;97-B:56–63.
The prognostic value of the fracture level in the treatment of Gartland type III supracondylar humeral fracture in children
Authors: Kang S. , Kam M. , Miraj F. , Park S-S. 
Published: January 2015

A small proportion of children with Gartland type III supracondylar humeral fracture (SCHF) experience troubling limited or delayed recovery after operative treatment. We hypothesised that the fracture level relative to the isthmus of the humerus would affect the outcome.We retrospectively reviewed 230 children who underwent closed reduction and percutaneous pinning (CRPP) for their Gartland type III SCHFs between March 2003 and December 2012. There were 144 boys and 86 girls, with the mean age of six years (1.1 to 15.2). The clinico-radiological characteristics and surgical outcomes (recovery of the elbow range of movement, post-operative angulation, and the final Flynn grade) were recorded. Multivariate analysis was employed to identify prognostic factors that influenced outcome, including fracture level. Multivariate analysis revealed that a fracture below the humeral isthmus was significantly associated with poor prognosis in terms of the range of elbow movement (p < 0.001), angulation (p = 0.001) and Flynn grade (p = 0.003). Age over ten years was also a poor prognostic factor for recovery of the range of elbow movement (p = 0.027).This is the first study demonstrating a subclassification system of Gartland III fractures with prognostic significance. This will guide surgeons in peri-operative planning and counselling as well as directing future research aimed at improving outcomes.Cite this article: Bone Joint J 2015;97-B:134–40.
The MRI appearances of cancellous allograft bone chips after the excision of bone tumours
Authors: Kang S. , Han I. , Hong S. H. , Cho H. S. , Kim W. , Kim H-S. 
Published: January 2015

Cancellous allograft bone chips are commonly used in the reconstruction of defects in bone after removal of benign tumours. We investigated the MRI features of grafted bone chips and their change over time, and compared them with those with recurrent tumour. We retrospectively reviewed 66 post-operative MRIs from 34 patients who had undergone curettage and grafting with cancellous bone chips to fill the defect after excision of a tumour. All grafts showed consistent features at least six months after grafting: homogeneous intermediate or low signal intensities with or without scattered hyperintense foci (speckled hyperintensities) on T1 images; high signal intensities with scattered hypointense foci (speckled hypointensities) on T2 images, and peripheral rim enhancement with or without central heterogeneous enhancements on enhanced images. Incorporation of the graft occurred from the periphery to the centre, and was completed within three years. Recurrent lesions consistently showed the same signal intensities as those of pre-operative MRIs of the primary lesions. There were four misdiagnoses, three of which were chondroid tumours.We identified typical MRI features and clarified the incorporation process of grafted cancellous allograft bone chips. The most important characteristics of recurrent tumours were that they showed the same signal intensities as the primary tumours. It might sometimes be difficult to differentiate grafted cancellous allograft bone chips from a recurrent chondroid tumour.Cite this article: Bone Joint J 2015;97-B:121–8.
Independent validation of the Nottingham Hip Fracture Score and identification of regional variation in patient risk within England
Authors: Rushton P. R. P. , Reed M. R. , Pratt R. K. 
Published: January 2015

The Nottingham Hip Fracture Score (NHFS) was developed to assess the risk of death following a fracture of the hip, based on pre-operative patient characteristics. We performed an independent validation of the NHFS, assessed the degree of geographical variation that exists between different units within the United Kingdom and attempted to define a NHFS level that is associated with high risk of mortality. The NHFS was calculated retrospectively for consecutive patients presenting with a fracture of the hip to two hospitals in England. The observed 30-day mortality for each NHFS cohort was compared with that predicted by the NHFS using the Hosmer–Lemeshow test. The distribution of NHFS in the observed group was compared with data from other hospitals in the United Kingdom. The proportion of patients identified as high risk and the mortality within the high risk group were assessed for groups defined using different thresholds for the NHFS. In all 1079 hip fractures were included in the analysis, with a mean age of 83 years (60 to 105), 284 (26%) male. Overall 30-day mortality was 7.3%. The NHFS was a significant predictor of 30-day mortality. Statistically significant differences in the distribution of the NHFS were present between different units in England (p < 0.001). A NHFS ≥ 6 appears to be an appropriate cut-point to identify patients at high risk of mortality following a fracture of the hip. Cite this article: Bone Joint J 2015;96-B:100–3.
Validation of primary metal-on-metal hip arthroplasties on the National Joint Registry for England, Wales and Northern Ireland using data from the London Implant Retrieval Centre
Authors: Sabah S. A. , Henckel J. , Cook E. , Whittaker R. , Hothi H. , Pappas Y. , Blunn G. , Skinner J. A. , Hart A. J. 
Published: January 2015

Arthroplasty registries are important for the surveillance of joint replacements and the evaluation of outcome. Independent validation of registry data ensures high quality. The ability for orthopaedic implant retrieval centres to validate registry data is not known. We analysed data from the National Joint Registry for England, Wales and Northern Ireland (NJR) for primary metal-on-metal hip arthroplasties performed between 2003 and 2013. Records were linked to the London Implant Retrieval Centre (RC) for validation. A total of 67 045 procedures on the NJR and 782 revised pairs of components from the RC were included. We were able to link 476 procedures (60.9%) recorded with the RC to the NJR successfully. However, 306 procedures (39.1%) could not be linked. The outcome recorded by the NJR (as either revised, unrevised or death) for a primary procedure was incorrect in 79 linked cases (16.6%). The rate of registry-retrieval linkage and correct assignment of outcome code improved over time. The rates of error for component reference numbers on the NJR were as follows: femoral head category number 14/229 (5.0%); femoral head batch number 13/232 (5.3%); acetabular component category number 2/293 (0.7%) and acetabular component batch number 24/347 (6.5%). Registry-retrieval linkage provided a novel means for the validation of data, particularly for component fields. This study suggests that NJR reports may underestimate rates of revision for many types of metal-on-metal hip replacement. This is topical given the increasing scope for NJR data. We recommend a system for continuous independent evaluation of the quality and validity of NJR data. Cite this article: Bone Joint J 2015;97-B:10–18.
Floor Tile Energy Harvester for Self-Powered Wireless Occupancy Sensing
Authors: Sharpes Nathan , Vučković Dušan , Priya Shashank 
Published: January 2015

Abstract
We investigate a concept that can reduce the overall power requirement of a smart building through improvements in the real-time control of HVAC and indoor lighting based on the building occupancy. The increased number of embedded sensors necessary to realize the smart building concept results in a complex wiring and power structure. We demonstrate a floor tile energy harvester for creating a wireless and self-powered occupancy sensor. This sensor termed as “Smart Tile Energy Production Technology (STEP Tech)” can be used to control automation in smart buildings such as lighting and climate control based upon the real-time building occupancy mapping. The sensor comprises of piezoelectric transducer, energy harvesting circuit and wireless communication. Modeling and optimization procedure for the piezoelectric cymbal transducer is described within the framework of tiles. The design and selection of a packaging technique and construction of a durable floor tile enclosure aimed at protecting the bulk piezoceramic is discussed within the constraint that the deflection of the tile should be minimal such that it is not readily perceivable by humans, thus not disturbing their gait. Experimental results demonstrate that the piezoelectric tile could provide a promising solution for wireless occupancy sensing.
Zigzag Connected Autotransformer-Based 24-pulse AC-DC Converter
Authors: Xiao-qiang Chen , Hao Qiu 
Published: January 2015

AbstractIn this paper, a zigzag connected autotransformer-based 24-pulse AC-DC converter is designed, modeled and simulated to feed direct torque controlled induction motor drives. Winding arrangements and parameters of the autotransformer and interphase reactor are given. Moreover, the design procedure of the autotransformer is modified to make it suitable for retrofit applications. Simulation results indicate that the system is capable of eliminating up to 21st harmonics in the ac mains current. The effect of load variation and load character is also studied to demonstrate the performance and effectiveness of the proposed 24-pulse converters. A set of power quality indices at ac mains and dc side are presented to compare the performance of 6-, 12- and 24-pulse converters.
Wax on, wax off: mediatized Asian masculinity through Hollywood martial arts films
Authors: Hiramoto Mie 
Published: January 2015

AbstractThis paper examines the mediatization of Asian masculinity in representative Hollywood martial arts films to expose the essentialism on which such films rely. Asian martial arts films are able to tap into viewers’ familiarity with idealized images of Asian masculinity; such familiarity is an essential part of the pleasure provided by these films and hence of their economic success. This study focuses on non-Asian (that is, western) protagonists’ appropriation of Asian masculinity because it succinctly encapsulates precisely how western hegemonies co-opt and commodify Asian-ness for their own purposes. Such appropriation is a use of intertextuality that not only allows western viewers to easily access a simplified model of Asian masculinity, but also allows them to reference earlier works to further facilitate the mediation and mediatization of Asian masculinity. This is a process which continues to Other and exoticizes Asian identities, even as it ostensibly carves out a niche for Asian bodies and identities in the institution of the film industry.
Tab Aspect Ratio Effect on Supersonic Jet Mixing
Authors: Kaushik Mrinal , Rathakrishnan E. 
Published: January 2015

AbstractThe efficacy of introducing mixing promoting small-scale vortices by two rectangular tabs, of aspect ratio 1.0, 1.5 and 2.0, placed at diametrically opposite locations at the exit of a Mach 1.73 convergent–divergent circular nozzle has been experimentally investigated, for NPRs from 4 to 8, covering overexpanded, correctly expanded and underexpanded states of the jet. The area blockage due to the each tab was 2.5% of the nozzle exit area. Keeping the blockage constant, the aspect ratio (defined as the ratio of length to width of the tab) was varied. A maximum core length reduction of 84.6% was caused by the tabs of aspect ratio 1.0, at underexpanded conditions corresponding to NPR (nozzle pressure ratio) 6. At this NPR, tabs of aspect ratio 1.5 and 2.0 caused core length reduction of 76.9% and 61.5%, respectively. The mixing promoting efficiency of aspect ratio 1.0 is found to be better than 1.5 and 2.0, at all NPRs of the present study, except NPR 5. The shadowgraph pictures of the uncontrolled and controlled jets clearly demonstrate the effectiveness of the tabs in weakening the waves in the jet core.
Evaluation of load losses in the ventilation circuit by the use of fortification in coal mines, study case: Nechí Mine, Amagá, Antioquia
Authors: Álvarez-Álvarez Carlos Mauricio , Arias-Quintero Carlos Andrés , Builes-Carvajal Juan Sebastian , Ordóñez-Carmona Oswaldo , Zapata-Madrigal Germán Darío 
Published: January 2015

The research aims to identify the variables which influence on the increase of risk for explosions in underground coal mines, especially in the accumulation of coal dust on top of the fortification, as well as analyze how these affect the load losses in the ventilation circuit and the proper evacuation of coal dust. This analysis was carried out by a guide field visits to Nechí Mine (Municipality Amagá, Antioquia) where it was observed that the coal dust accumulated significantly in the wooden doors that in the steel arches, we proceeded to simulate different geometries of fortification and the amount of these for the purpose to determine which is the geometry that contributes to reducing the load losses. After analyzing the different scenarios, the geometry that optimizes the ventilation circuit has been called geometry Circular 2, which shows reduction in load losses of up to 14.67% compared to other geometries analyzed under the same conditions. Whit this, are proposed alternatives more efficient to optimize the ventilation circuit and ensure health and safety conditions for workers inside the mine.
Standardized Iron Ore Characterization Methodology for Metallurgy
Authors: Kolb F. , Pichler A. , Mali H. , Schenk J. 
Published: January 2015

Abstract
A comprehensive and reproducible evaluation of iron ores requires structured analytical methods. Therefore, a methodology has been developed which serves to evaluate the chemical and morphological characteristics. Seven different iron ores were examined with regard to their specific properties. For the standardized methodology, the following analytical methods have been applied: sieve analysis, chemical analysis, porosity measurement, reflected light and transmitted light microscopy.
The developed method is suitable for a general mineralogical/petrographic characterization of all common raw or reduced iron ores and may also be applied with other ores.
Antidiabetic and hypolipidemic potential of Rhazya stricta Decne extract and its fractions
Authors: Ahmed Asma , Asad Muahammad Javaid , Ahmad Muhammad Sheeraz , Qureshi Rehmatullah , Shah Syed Imam , Gul Hina , Gulfraz Muhammad 
Published: January 2015

Diabetes mellitus is the most common human disease and there is growing interest for plant based therapy in managing diabetes mellitus specifically in the developing world. In the present study, Rhazya stricta Decne extract was analysed for its antidiabetic activities. Crude methanolic extracts of different plant parts were tested in vivo on albino mice Balb-C, for the reduction of blood glucose, urea, cholesterol, triacylglycerides and glycosylated haemoglobin. Results obtained showed that leaves of R. stricta have best antidiabetic effect by reducing blood glucose level, Glycosylated haemoglobin, triacylglycerides and Cholesterol in hyperglycaemic mice. The R. stricta leaves extract being most active was further fractionated by solvent extraction using n- Hexane, ethyl acetate, chloroform and water and all fractions were tested for same activities. It was found that ethyl acetate fraction is most effective in the reduction of blood glucose level at fasting and random conditions and blood glucose reduction was comparable to Glucophage, a standard antidiabetic drug. The present study suggests that Rhazya stricta leaves extract and its ethyl acetate fraction has great potential for development of antidiabetic drug.DOI: http://dx.doi.org/10.3329/icpj.v4i2.21484 International Current Pharmaceutical Journal, January 2015, 4(2): 353-361
Transcriptional response ofArabidopsisseedlings during spaceflight reveals peroxidase and cell wall remodeling genes associated with root hair development
Authors: Kwon Taegun , Sparks J. Alan , Nakashima Jin , Allen Stacy N. , Tang Yuhong , Blancaflor Elison B. 
Published: January 2015

•Premise of the study:Plants will be an important component of advanced life support systems during space exploration missions. Therefore, understanding their biology in the spacecraft environment will be essential before they can be used for such systems.•Methods:Seedlings ofArabidopsis thalianawere grown for 2 wk in the Biological Research in Canisters (BRIC) hardware on board the second to the last mission of the space shuttle Discovery (STS‐131). Transcript profiles between ground controls and space‐grown seedlings were compared using stringent selection criteria.•Key results:Expression of transcripts associated with oxidative stress and cell wall remodeling was repressed in microgravity. These downregulated genes were previously shown to be enriched in root hairs consistent with seedling phenotypes observed in space. Mutations in genes that were downregulated in microgravity, including two uncharacterized root hair‐expressed class III peroxidase genes (PRX44andPRX57), led to defective polar root hair growth on Earth.PRX44andPRX57mutants had ruptured root hairs, which is a typical phenotype of tip‐growing cells with defective cell walls and those subjected to stress.•Conclusions:Long‐term exposure to microgravity negatively impacts tip growth by repressing expression of genes essential for normal root hair development. Whereas changes in peroxidase gene expression leading to reduced root hair growth in space are actin‐independent, root hair development modulated by phosphoinositides could be dependent on the actin cytoskeleton. These results have profound implications for plant adaptation to microgravity given the importance of tip growing cells such as root hairs for efficient nutrient capture.
Microsatellite development and flow cytometry in the African tree genus Afzelia (Fabaceae, Caesalpinioideae) reveal a polyploid complex
Authors: Donkpegan Armel S. L. , Doucet Jean‐Louis , Dainou Kasso , Hardy Olivier J. 
Published: January 2015

• Premise of the study: Microsatellites were developed in the vulnerable African rainforest tree Afzelia bipindensis to investigate gene flow patterns.• Methods and Results: Using 454 GS‐FLX technique, 16 primer sets were identified and optimized, leading to 11 polymorphic and readable markers displaying each six to 25 alleles in a population. Up to four alleles per individual were found in each of the loci, without evidence of fixed heterozygosity, suggesting an autotetraploid genome. Cross‐amplification succeeded for all loci in the African rainforest species A. pachyloba and A. bella, which appeared tetraploid, and for most loci in the African woodland species A. africana and A. quanzensis, which appeared diploid, but failed in the Asian species A. xylocarpa. Flow cytometry confirmed the suspected differences in ploidy.• Conclusions: African Afzelia species are diploid or tetraploid, a situation rarely documented in tropical trees. These newly developed microsatellites will help in the study of their mating system and gene flow patterns.
Quelles compétences pour la transformation numérique ?
Authors: Gicquel Florence 
Published: January 2015

[enquête] La « transformation numérique » en cours dans les organisations a un impact en terme de gestion des contenus. Quelles compétences attend-on d’un professionnel de l’information appelé à jouer un rôle majeur dans la gouvernance digitale ? Une enquête vous aide à vous positionner.
Un futur code des relations entre le public et les administrations
Authors: Vialettes Maud , Barrois de Sarigny Cécile 
Published: January 2015

[travaux] Avoir accès facilement à l’ensemble des textes juridiques portant sur les démarches administratives attirera l’attention d’un large public. L’article présente la méthode « originale » adoptée pour créer un tel Code et les principaux éléments de son contenu.