bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penetration of Hydrophilic Anions into Strongly Acidic Cation-exchange Resin Aided by Bridging Complexation
Authors: Ohnaka Kenji , Yuchi Akio 
Published: May 2005

Abstract
Several anions were found to penetrate into a strongly acidic cation-exchange resin by the aid of complexation with Fe3+ ion to give dimeric species, such as [(–S)2Fe(A)Fe(S–)2] (–S: benzenesulfonate bound to polymer network; A2−: HPO42−, HPO32−), and species having a composition of (–S):Fe:A = 2:1:1 (A−: OH−, H2PO2−).
Preparation of Crystallized and Mesoporous Carbon by Nickel-catalyzed Carbonization of Wood
Authors: Suzuki Kyoko , Suzuki Tsutomu , Takahashi Yukio , Okimoto Mitsuhiro , Yamada Tetsuo , Okazaki Noriyasu , Shimizu Yuichi , Fujiwara Masashi 
Published: May 2005

Abstract
Char composed of crystallized carbon (T component) and enriched with mesopore was obtained by carbonization of nickel-loaded wood at 850 and 900 °C for 1 h in a flow of nitrogen, although the corresponding treatment of wood without nickel gave amorphous and microporous carbon. This also disclosed a close relationship between the production of T component and the formation of mesopore. The crystallized and mesoporous wood carbon that can possess a double function of electroconductivity adequate for electromagnetic shielding and adsorption capacity comparable to that of coal-derived activated carbon is a promising high-quality carbon electrode material.
Combinatorial Fluorescence XAFS Imaging of Manganese Complex Oxides
Authors: Eba Hiromi , Sakurai Kenji 
Published: May 2005

Abstract
This report demonstrates that novel XAFS (X-ray absorption fine structure) microimaging, which does not require any spatial scans of the sample, can be used to evaluate the chemical states of combinatorial array libraries. The method has been applied to manganese–cobalt spinel MnCo2O4 prepared on the same substrate under different synthesis conditions. The valence numbers of Mn have been studied as a map by obtaining X-ray fluorescence images (1000 × 1000 pixels) as a function of the incident energy of synchrotron X-rays. The advantage of this method is that the whole substrate, i.e., all samples in the library, can be observed in a short time, typically ca. 10 min, which is equivalent to the measuring time for a single sample on the substrate when conventional scanning methods are employed.
Relative Change of Viscosity of Water under a Transverse Magnetic Field of 10 T is Smaller than 10−4
Authors: Ishii Kikujiro , Yamamoto Shunsuke , Yamamoto Masatsugu , Nakayama Hideyuki 
Published: May 2005

Abstract
Viscosities of pure water and aqueous NaCl solutions were measured under magnetic field with special cares for the temperature fluctuation and magnetic force acting on the sample. The relative change in viscosity of water at the magnetic field of 10 T was found to be smaller than 10−4. The result is discussed in comparison with the values reported in earlier papers.
Preparation and Physical Properties of Thermoresponsive Biodegradable Poly(asparagine) Derivatives
Authors: Watanabe Eiji , Tomoshige Naoki 
Published: May 2005

Abstract
New biodegradable and thermoresponsive poly(asparagine) derivatives have been developed. They have a LCST and showed a sol–gel–sol phase transition. The LCST and a sol–gel–sol phase transition temperature could be controlled by the composition ratio of hydrophilic and hydrophobic groups of the polymer side chain.
Regioselective Glycosylations of 4,6-O-Benzylidene Glucopyranosides with Glycosyl Trichloroacetimidates
Authors: Zhou Feng-Yan , Huang Jian-Ying , Yuan Qing , Wang Yan-Guang 
Published: May 2005

Abstract
An efficient method for synthesis of the (1 → 3)-linked disaccharides is reported. Glycosylations of 4,6-O-benzylidene glucopyranosides with glycosyl trichloroacetimidates regioselectively afforded (1 → 3)-linked disaccharides in good yields using trimethylsilyl triflate (TMSOTf)/4 Å MS as catalyst.
Management of hearing loss in Apert syndrome
Authors: Rajenderkumar D , Bamiou D , Sirimanna T 
Published: May 2005

Background: Apert syndrome is one of the craniosynostosis syndromes, with abirth prevalence estimated to be between 9.9 and 15.5/million, and accounts for 4.5 per cent ofcraniosynostoses. Although conductive hearing loss is common in Apert syndrome there are contradicting reports regarding the cause of this hearing loss. There is also no detailed informationavailable on the management of hearing loss in Apert syndrome.Materials and methods: A retrospective analysis of case notes of Apert syndrome patients seen between 1970 and 2003 at Great Ormond Street Children’s
Hospital, London, was undertaken.Results: Seventy case notes were obtained. The incidence of congenital hearing impairment was between 3 and 6 per cent. Almost all patients had otitis media with effusion (glue ear), which tended to persist into adult life. More than 56 per cent of cases developed permanent conductive hearing loss by 10–20 years. Repeated grommet insertion was common; even though 35 per cent had trouble with ear discharge and persistent conductive hearing loss. Statistically, grommets made no difference to the risk of developing permanent hearing loss.Conclusion:This study, of the largest number of Apert syndrome cases assembled to date, showed that early optimization of hearing with possible hearing aids needs to be considered. Repeated grommet insertion does not help in optimizing hearing, especially if ear discharge complicates the picture.
Operative training in otolaryngology in the United Kingdom: A specialist registrar survey
Authors: Georgalas Christos , Hadjihannas Edward , Ghufoor Khalid , Pracy Paul , Papesch Michael 
Published: May 2005

Objective: To assess the current status of operative training for otolaryngology specialist registrars in the United Kingdom.Design: Web-based questionnaire survey.Participants: All otolaryngology specialist registrars in the United Kingdom.Main outcome measures: The overall satisfaction with operative training was assessed as wellas the number of operations performed and level of competency in stage-specific procedures, as defined by the Joint Committee for Higher Specialist Training.Results: Otolaryngology specialist registrars are generally satisfied with the quality of their operative training. The most important predictive factor of satisfaction with operative training was the number of theatre sessions per week. The vast majority of registrars (92 per centby the end of year one, 73 per cent at the end of years two to four) appear to attain all the stage-appropriate surgical competencies during the first four years. However, with respect to the last two years of registrar training, only 26 per cent can perform all the designated (complex) procedures. There are no significant differences between deaneries or geographic regions
in the overall satisfaction rates, number of operative sessions, number of operations performedor operative competencies attained.Conclusion: It appears that the Specialist Advisory Committee (SAC) is generally successful in maintaining common operative training standards and providing a homogenous training environment. During the first four years registrars attain an appropriate level of general training while the last two years are mainly devoted to subspecialty interests.
Bilateral nasolabial cysts associated with recurrent dacryocystitis
Authors: Kyrmizakis Dionysios E , Lachanas Vassilios A , Benakis Antonios A , Velegrakis George A , Aslanides Ioannis M 
Published: May 2005

Objective: Nasolabial cysts are rare, nonodontogenic, soft-tissue, developmental cysts occurring inferior to the nasal alar region. They are thought to arise from remnants of the nasolacrimal ducts and they are frequently asymptomatic. We report a rare case of bilateral nasolabial cysts accompanied by bilateral chronic dacryocystitis.Case report: A 48-year-old woman suffering from bilateral chronic dacryocystitis was referred to our department for endonasal dacryocystorhinostomy. She had undergone external dacryocystorhinostomy on the left side a few years earlier. Physical examination and computed tomography scan revealed nasolabial cysts bilaterally inferior to the nasal alar region. The cysts were removed via a sublabial approach and endoscopic dacryocystorhinostomy was performed on the right side. Ten months after surgery, the patient was asymptomatic.Conclusion: There may be a correlation, due to embryological reasons, between the presence of nasolabial cysts and the presence of chronic dacryocystitis. Both can be corrected surgically, under the same anaesthesia, without visible scar formation.
Long-term effects of the Meniett device in Ménière’s disease: the Western Australian experience
Authors: Rajan Gunesh P , Din Sobani , Atlas Marcus D 
Published: May 2005

Objectives: Transtympanic pressure has been shown to influence endolymphatic hydrops. As endolymphatic hydrops plays a key role in Ménière’s disease, a few studies, undertaken by the inventors, manufacturers and associates of the Meniett device,have demonstrated positive short-term effects of transtympanic pressure treatment via the Meniett device in medically intractable Ménière’s disease. The aim of our study was to independently investigate the long-term efficacy and safety of transtympanic pressure treatment in the management of recalcitrant vertigo in Ménière’s disease.Design: Cross-sectional case study.Setting: Tertiary referral centre.Participants: Eighteen patients with Ménière’s disease, suffering from medically intractable symptoms. All patients in the study had Ménière’s
disease according to the criteria of the Committee on Hearing and Equilibrium of the American Academy of Otolaryngology, Head & Neck Surgery.Main outcome measurements: Outcome and severity of symptoms were assessed, using the six-point functional scale and the vertigo visual analogue scale (VAS), as recommended by the Committee on Hearing and Equilibrium of the American Academy of Otolaryngology, Head & Neck Surgery. Changes of pure tone average thresholds and vestibular calorics before and during treatment with the Meniett device were recorded. The mean follow-up time was 18 months.Results: Twelve out of 18 patients showed significant improvement in the functional score and in the VAS. Five patients displayed an audiometric improvement, out of which three patients showed a pertaining significant hearing gain of more than 10 dB; the remainder had stable hearing levels. Of six patients without any improvement, four had previous invasive surgery for theirMénière’s disease and two had previous vestibular ablation with gentamicin.No changes in vestibular function were noted. There were no complications duringthe treatment
with the Meniett device.Conclusion: According to this independent study, the Meniett device seems to be a minimally invasive, non-destructive treatment tool, which can reduce vertigo and associated functional handicap in Ménière’s disease. These effects are maintained up to 18 months after treatment so far. Previous surgical or chemical vestibular ablation procedures may adversely influence the effect of the Meniett device.
Reducing the risk of dislocation after total hip arthroplasty
Authors: Biedermann R. , Tonin A. , Krismer M. , Rachbauer F. , Eibl G. , Stöckl B. 
Published: May 2005

Malposition of the acetabular component is a risk factor for post-operative dislocation after total hip replacement (THR). We have investigated the influence of the orientation of the acetabular component on the probability of dislocation. Radiological anteversion and abduction of the component of 127 hips which dislocated post-operatively were measured by Einzel-Bild-Röentgen-Analysis and compared with those in a control group of 342 patients. In the control group, the mean value of anteversion was 15° and of abduction 44°. Patients with anterior dislocation after primary THR showed significant differences in the mean angle of anteversion (17°), and abduction (48°) as did patients with posterior dislocation (anteversion 11°, abduction 42°). After revision patients with posterior dislocation showed significant differences in anteversion (12°) and abduction (40°). Our results demonstrate the importance of accurate positioning of the acetabular component in order to reduce the frequency of subsequent dislocations. Radiological anteversion of 15° and abduction of 45° are the lowest at-risk values for dislocation.
Incomplete triple pelvic osteotomy for the surgical treatment of dysplasia of the hip in adolescents and adults
Authors: Eren A. , Ömeroglu H. , Güven M. , Ugutmen E. , Altintas F. 
Published: May 2005

We treated 26 hips (24 consecutive patients) with residual dysplasia by a technique of incomplete triple pelvic osteotomy. The mean age of the patients was 21.6 years. The mean values for the pre-operative centre-edge angle of Wiberg, the refined centre-edge angle, the acetabular angle of Sharp, the modified acetabular angle and femoral head lateralisation were 7.7°, −3.1°, 49.3°, 53.2° and 17.2 mm, respectively. After a mean follow-up of 3.3 years they were 27.0°, 13.0°, 38.9°, 44.3° and 15.9 mm, respectively (p < 0.05). The osteoarthritic grading changed adversely in one hip. The mean pre-operative and latest Harris hip scores were 74.9 and 93.0, respectively (p < 0.05). This technique provides a stable osteotomy with maintenance of the posterior column which allows early mobilisation and minimal internal fixation. The technique is not complex and requires minimal blood transfusion. The use of an image intensifier is not necessary and harvesting of a subcristal bone graft avoids post-operative complications at the donor site.
Extensor mechanism reconstruction after proximal tibial replacement
Authors: Oddy M. J. , Pendegrass C. J. , Goodship A. E. , Cannon S. R. , Briggs T. W. R. , Blunn G. W. 
Published: May 2005

We developed an in vivo model of the attachment of a patellar tendon to a metal implant to simulate the reconstruction of an extensor mechanism after replacement of the proximal tibia. In 24 ewes, the patellar tendon was attached to a hydroxyapatite (HA)-coated titanium prosthesis. In 12, the interface was augmented with autograft containing cancellous bone and marrow. In the remaining ewes, the interface was not grafted. Kinematic gait analysis showed nearly normal function of the joint by 12 weeks. Force-plate assessment showed a significant increase in functional weight-bearing in the grafted animals (p = 0.043). The tendon-implant interface showed that without graft, encapsulation of fibrous tissue occurred. With autograft, a developing tendon-bone-HA-implant interface was observed at six weeks and by 12 weeks a layered tendon-fibrocartilage-bone interface was seen which was similar to a direct-type enthesis. With stable mechanical fixation, an appropriate bioactive surface and biological augmentation the development of a functional tendon-implant interface can be achieved.
The use of cementless expansion acetabular component and an alumina-polyethylene bearing in total hip arthroplasty for osteonecrosis
Authors: Kim Y.-G. , Kim S.-Y. , Kim S.-J. , Park B.-C. , Kim P.-T. , Ihn J.-C. 
Published: May 2005

We performed 114 consecutive primary total hip arthroplasties with a cementless expansion acetabular component in 101 patients for advanced osteonecrosis of the femoral head. The mean age of the patients at surgery was 51 years (36 to 62) and the mean length of follow-up was 110 months (84 to 129).The mean pre-operative Harris hip score of 47 points improved to 93 points at final follow-up. The polyethylene liner was exchanged in two hips during this period and one broken acetabular component was revised. The mean linear wear rate of polyethylene was 0.07 mm/year and peri-acetabular osteolysis was seen in two hips (1.9%). Kaplan-Meier analysis indicated that the survival of the acetabular component without revision was 97.8% (95% confidence interval 0.956 to 1.000) at ten years.Our study has shown that the results of THA with a cementless expansion acetabular component and an alumina-polyethylene bearing surface are good.
Treatment of deep infection of the hip associated with massive bone loss
Authors: Hsieh P.-H. , Shih C.-H. , Chang Y.-H. , Lee M. S. , Yang W.-E. , Shih H.-N. 
Published: May 2005

We have carried out in 24 patients, a two-stage revision arthroplasty of the hip for infection with massive bone loss. We used a custom-made, antibiotic-loaded cement prosthesis as an interim spacer. Fifteen patients had acetabular deficiencies, eight had segmental femoral bone loss and one had a combined defect. There was no recurrence of infection at a mean follow-up of 4.2 years (2 to 7). A total of 21 patients remained mobile in the interim period. The mean Merle D’Aubigné and Postel hip score improved from 7.3 points before operation to 13.2 between stages and to 15.8 at the final follow-up. The allograft appeared to have incorporated into the host bone in all patients. Complications included two fractures and one dislocation of the cement prosthesis. The use of a temporary spacer maintains the function of the joint between stages even when there is extensive loss of bone. Allograft used in revision surgery after septic conditions restores bone stock without the risk of recurrent infection.
Transfer of pectoralis major in arthrogryposis to restore elbow flexion
Authors: Lahoti O. , Bell M. J. 
Published: May 2005

We present the long-term results of pectoralis major transfer to restore elbow flexion in seven patients (ten procedures). The early results in all the patients were encouraging but with longer follow-up a gradual and progressive flexion deformity was observed with a decrease in the arc of flexion in eight elbows, reaching ≥ 90° in all cases. The results of pectoralis major transfer deteriorate with time due to the development of a recalcitrant flexion deformity of the elbow. With bilateral involvement we now recommend that the procedure be undertaken on one side only to allow the hand to reach the mouth for feeding, while the opposite side remains in extension for perineal toilet.
Indirect reduction and percutaneous fixation versus open reduction and internal fixation for displaced intra-articular fractures of the distal radius
Authors: Kreder H. J. , Hanel D. P. , Agel J. , McKee M. , Schemitsch E. H. , Trumble T. E. , Stephen D. 
Published: May 2005

A total of 179 adult patients with displaced intra-articular fractures of the distal radius was randomised to receive indirect percutaneous reduction and external fixation (n = 88) or open reduction and internal fixation (n = 91). Patients were followed up for two years. During the first year the upper limb musculoskeletal function assessment score, the SF-36 bodily pain sub-scale score, the overall Jebsen score, pinch strength and grip strength improved significantly in all patients. There was no statistically significant difference in the radiological restoration of anatomical features or the range of movement between the groups. During the period of two years, patients who underwent indirect reduction and percutaneous fixation had a more rapid return of function and a better functional outcome than those who underwent open reduction and internal fixation, provided that the intra-articular step and gap deformity were minimised.
Unstable extra-articular fractures of the distal radius
Authors: Azzopardi T. , Ehrendorfer S. , Coulton T. , Abela M. 
Published: May 2005

We performed a prospective, randomised study on 57 patients older than 60 years of age with unstable, extra-articular fractures of the distal radius to compare the outcome of immobilisation in a cast alone with that using supplementary, percutaneous pinning. Patients treated by percutaneous wires had a statistically significant improvement in dorsal angulation (mean 7°), radial length (mean 3 mm) and radial inclination (mean 3 mm) at one year. However, there was no significant difference in functional outcome in terms of pain, range of movement, grip strength, activities of daily living and the SF-36 score except for an improved range of movement in ulnar deviation in the percutaneous wire group. One patient developed a pin-track infection which required removal of the wires at two weeks. We conclude that percutaneous pinning of unstable, extra-articular fractures of the distal radius provides only a marginal improvement in the radiological parameters compared with immobilisation in a cast alone. This does not correlate with an improved functional outcome in a low-demand, elderly population.
Accuracy of diagnostic imaging techniques in the diagnosis of aseptic loosening of the femoral component of a hip prosthesis
Authors: Temmerman O. P. P. , Raijmakers P. G. H. M. , Berkhof J. , Hoekstra O. S. , Teule G. J. J. , Heyligers I. C. 
Published: May 2005

In this meta-analysis we included 32 English-language articles published between January 1975 and June 2004 on the diagnostic performance of plain radiography, subtraction arthrography, nuclear arthrography and bone scintigraphy in detecting aseptic loosening of the femoral component, using criteria based on the Cochrane systematic review of screening and diagnostic tests. The mean sensitivity and specificity were, respectively, 82% (95% confidence interval (CI) 76 to 87) and 81% (95% CI 73 to 87) for plain radiography and 85% (95% CI 75 to 91) and 83% (95% CI 75 to 89) for nuclear arthrography. Pooled sensitivity and specificity were, respectively, 86% (95% CI 74 to 93) and 85% (95% CI 77 to 91) for subtraction arthrography and 85% (95% CI 79 to 89) and 72% (95% CI 64 to 79) for bone scintigraphy. Although the diagnostic performance of the imaging techniques was not significantly different, plain radiography and bone scintigraphy are preferred for the assessment of a femoral component because of their efficacy and lower risk of patient morbidity.
The effect of suture materials and techniques on the outcome of repair of the rotator cuff
Authors: Boehm T. D. , Werner A. , Radtke S. , Mueller T. , Kirschner S. , Gohlke F. 
Published: May 2005

In a prospective, randomised study on the repair of tears of the rotator cuff we compared the clinical results of two suture techniques for which different suture materials were used. We prospectively randomised 100 patients with tears of the rotator cuff into two groups. Group 1 had transosseous repair with No. 3 Ethibond using modified Mason-Allen sutures and group 2 had transosseous repair with 1.0 mm polydioxanone cord using modified Kessler sutures. After 24 to 30 months the patients were evaluated clinically using the Constant score and by ultrasonography. Of the 100 patients, 92 completed the study. No significant statistical difference was seen between the two groups: Constant score, 91% vs 92%; rate of further tear, 18% vs 22%; and revision, 4% vs 4%. In cases of further tear the outcome in group 2 did not differ from that for the intact repairs (91% vs 91%), but in group 1 it was significantly worse (94% vs 77%, p = 0.005). Overall, seven patients had complications which required revision surgery, in four for pain (two in each group) and in three for infection (two in group 1 and one in group 2).