bluuebunny/crossref_metadata_2025_split huggingface dataset:
MRI of the cervical spine with neck extension: is it useful?
Authors: Bartlett R J V , Hill C A Rowland , Rigby A S , Chandrasekaran S , Narayanamurthy H 
Published: February 2012

Objectives: Standard MRI of the cervical spine is performed in a different anatomical position to that utilised for traditional contrast myelography. Those well practised in myelography are familiar with the considerable changes in configuration of the bony and soft tissues of the cervical spine that may occur with changes in the degree of neck flexion and extension. We set out to compare the findings in a select group of patients with myeloradiculopathy who had undergone myelography and MRI in both standard and neck-extended positions. These findings were correlated with the clinical status.
Methods: 29 patients underwent myelography with CT (CTM) and MRI in neutral and neck-extended positions. The imaging was assessed for the degree of cord compression and neural foraminal narrowing, quantified using a simple grading scheme suitable for routine clinical practice. The degree of neck extension was assessed using an angular measurement.
Results: For both CTM and MRI, scanning with the neck extended significantly increases the severity of cord compression compared with the standard supine position, to a degree similar to that shown during conventional prone myelography. The degree of perceived cord compression is related to the degree of neck extension achieved. Correlation of standard MRI findings and the clinical level of radiculopathy is poor. This correlation improves when the neck is extended.
Conclusions: The most appropriate position for routine MRI of the cervical spine in degenerative disease remains unknown, but in selected patients imaging with the neck extended may provide important additional information.
Acute compartment syndrome in the pelvic limb of a cow following biopsy of a skeletal muscle-associated hemangiosarcoma
Authors: Vogel Susan R. , Desrochers André , Lanthier Isabelle , Strina Marion , Babkine Marie 
Published: February 2012

Abstract
Case Description—A 6-year-old Holstein cow was examined because of chronic lameness and swelling near the stifle joint of the left pelvic limb.
Clinical Findings—A mass was palpated in the soft tissues lateral to the proximal aspect of the left tibia. Multiple attempts to obtain a biopsy specimen of the mass resulted in acute compartment syndrome of the femoral compartment (tensor fasciae latae and biceps femoris muscles) and lateral tibial compartment (cranial tibial and peroneus tertius muscles) with associated sciatic nerve paralysis.
Treatment and Outcome—Surgical decompression via tensor fasciae latae and biceps femoris incision resolved the sciatic nerve paralysis. On the fifth day following surgery, the cow began to develop signs of increased respiratory effort. Thoracic radiography revealed a pulmonary metastatic micronodular pattern. The cow was euthanized because its condition deteriorated. Metastatic hemangiosarcoma was confirmed at necropsy, and the primary tumor was the mass that was lateral to the tibia and within the biceps femoris muscle.
Clinical Relevance—Hemangiosarcoma should be considered a differential diagnosis for lameness in cattle when no orthopedic cause can be identified. Close patient surveillance is strongly recommended in the event that a vascular tumor is present because catastrophic consequences are possible. To our knowledge, this is the first report of acute compartment syndrome in a pelvic limb of a bovine patient and the only report of hemangiosarcoma in the skeletal muscle of cattle.
Cement-in-cement Acetabular Revision With a Constrained Tripolar Component
Authors: Leonidou Andreas , Pagkalos Joseph , Luscombe Jonathan 
Published: February 2012

Dislocation of a total hip replacement (THR) is common following total hip arthroplasty (THA). When nonoperative management fails to maintain reduction, revision surgery is considered. The use of constrained acetabular liners has been extensively described. Complete removal of the old cement mantle during revision THA can be challenging and is associated with significant complications. Cement-in-cement revision is an established technique. However, the available clinical and experimental studies focus on femoral stem revision. The purpose of this study was to present a case of cement-in-cement acetabular revision with a constrained component for recurrent dislocations and to investigate the current best evidence for this technique.
This article describes the case of a 74-year-old woman who underwent revision of a Charnley THR for recurrent low-energy dislocations. A tripolar constrained acetabular component was cemented over the primary cement mantle following removal of the original liner by reaming, roughening the surface, and thoroughly irrigating and drying the primary cement. Clinical and radiological results were good, with the Oxford Hip Score improving from 11 preoperatively to 24 at 6 months postoperatively.
The good short-term results of this case and the current clinical and biomechanical data encourage the use of the cement-in-cement technique for acetabular revision. Careful irrigation, drying, and roughening of the primary surface are necessary.
Aberrant Iliac Artery: Far Lateral Lumbosacral Surgical Anatomy
Authors: Delasotta Lawrence A. , Radcliff Kris , Sonagli Marcos A. , Miller Luciano 
Published: February 2012

A 44-year-old man presented after 3 weeks of progressively worsening atraumatic onset pain in the right anteromedial thigh. The pain was sharp and radiated to the anteromedial shin and medial foot. The patient had no associated weakness, numbness, or bowel/bladder dysfunction. Nonsteroidal anti-inflammatory, pain, and neuropathic-relieving drugs had limited effect. He underwent interlaminar injections, which provided transient relief of his shin symptoms.
After conservative management failed, a spine surgeon (not affiliated with our practice) recommended an anterior lumbar interbody fusion via far lateral approach. The patient presented to our spine clinic for a second opinion. Closed magnetic resonance imaging revealed an aberrant iliac artery impinging on the lumbar plexus and a foraminal herniation at L4–L5 on the right, an orientation more lateral than expected or seen on the contralateral side. We recommended physical therapy that focused on core strength and adequate stretching prior to considering surgery. The patient’s symptoms have since resolved. Common iliac artery anomalies are rare. No known incidence exists. The finding in this case was incidental and, if missed, could have led to vascular compromise. To prevent such an injury during minimally invasive (transpsoas lateral approach) spine surgery, we recommend careful examination of radiographs for aberrant vessels.
Dielectric analysis of high‐density polyethylene‐graphite composites for capacitor and EMI shielding application
Authors: Panwar Varij , Mehra R. M. , Park Jong‐Oh , Park Suk‐ho 
Published: February 2012

AbstractIn this article, we present and analyze the dielectric properties of high‐density polyethylene (HDPE)‐graphite(Gr) composites in low and radio frequency ranges for capacitor and electromagnetic interference (EMI) shielding application, respectively. The HDPE‐Gr composites were prepared by mixing and the hot compression mold technique. The dielectric constant and AC conductivity of HDPE‐Gr composites according to graphite volume fraction follow the power law model of percolation theory. The percolation threshold of the composites was estimated to be 0.039 (∼ 7 wt % of Gr). The HDPE‐Gr composites exhibited high dielectric constants, high dissipation factors, and high AC conductivities at a certain addition of graphite in low frequency and radio frequency regions. The AC conductivity of the composites with the higher content of graphite depicted frequency independency in low and radio frequency region. The EMI shielding properties of the HDPE‐Gr composites was evaluated in the radio frequency region and it was found that the maximum EMI shielding of the composites was obtained. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Factors influencing the quality of total mesorectal excision
Authors: Garlipp B , Ptok H , Schmidt U , Stübs P , Scheidbach H , Meyer F , Gastinger I , Lippert H 
Published: February 2012

Abstract

Background
Total mesorectal excision (TME) has become the standard of care for rectal cancer. Incomplete TME may lead to local recurrence.

Methods
Data from the multicentre observational German Quality Assurance in Rectal Cancer Trial were used. Patients undergoing low anterior resection for rectal cancer between 1 January 2005 and 31 December 2009 were included. Multivariable analysis using a stepwise logistic regression model was performed to identify predictors of suboptimal TME.

Results
From a total of 6179 patients, complete data sets for 4606 patients were available for analysis. Pathological tumour category higher than T2 (pT3 versus pT1/2: odds ratio (OR) 1·22, 95 per cent confidence interval 1·01 to 1·47), tumour distance from the anal verge less than 8 cm (OR 1·27, 1·05 to 1·53), advanced age (65–80 years: OR 1·25, 1·03 to 1·52; over 80 years: OR 1·60, 1·15 to 2·22), presence of intraoperative complications (OR 1·63, 1·15 to 2·30), monopolar dissection technique (OR 1·43, 1·14 to 1·79) and low case volume (fewer than 20 procedures per year) of the operating surgeon (OR 1·20, 1·06 to 1·36) were independently associated with moderate or poor TME quality.

Conclusion
TME quality was influenced by patient- and treatment-related factors.
Phthalocyanine
Authors: Wöhrle Dieter , Schnurpfeil Günter , Makarov Sergey , Suvora Olga 
Published: February 2012

AbstractPhthalocyanine, bereits seit 75 Jahren als blaue und dann als grüne Pigmente produziert, gehören zu den wichtigsten organischen Farbmitteln. Farbechtheit, ‐homogenität, ‐intensität und ‐stabilität verbunden mit einfachem synthetischem Zugang sind die Voraussetzungen für die Anwendung dieses großen, meist planaren aromatischen π‐Systems als Farbmittel. In den letzten Jahren haben die Phthalocyanine auch Anwendung in CD/Rs, als blaue und grüne Farben in LCDs, als Photoleiter in Laserdruckern, p‐Leiter und Absorber in organischen Solarzellen gefunden. Das System zeichnet sich durch eine große Variabilität aus (unterschiedliche Substituenten am und Metalle/Halbmetalle im Liganden), um gezielt verschiedene gewünschte Eigenschaften einzustellen. Somit sind Phthalocyanine auch vielversprechend für gänzlich neue Bereiche.
Nanoconfinement Effects: Glucose Oxidase Reaction Kinetics in Nanofluidics
Authors: Wang Chen , Sheng Zhen‐Huan , Ouyang Jun , Xu Jing‐Juan , Chen Hong‐Yuan , Xia Xing‐Hua 
Published: February 2012

AbstractSize‐tunable nanofluidic devices coupled to an electrochemical detector have been designed and then used to study glucose oxidase (GOx) reaction kinetics confined in nanospaces. The devices are fabricated via a photochemical decomposition reaction, which forms nanochannels covered with carboxyl groups. The generated carboxyl groups enable us to chemically pattern biological molecules on the polymer surfaces via covalent bonding. With this approach, the activity of the immobilized biological molecules confined in nanospaces with different sizes has been investigated. GOx species are chemically immobilized on the surface of the nanochannels, catalyzing the oxidation of substrate glucose as it flows through the channels. The enzyme reaction product, hydrogen peroxide, passing through the nanochannels, reaches an electrochemical detector, giving rise to an increase in anodic current. This steady‐state electrochemical current, which responds to various glucose concentrations, can be used to evaluate the GOx activity under confinement conditions. The results show significant nanoconfinement effects that are dependent on the channel size where the reaction occurs, demonstrating the importance of spatial confinement on the GOx reaction kinetics. The present approach provides an effective method for the study of enzyme activity and other bioassay systems, such as cell assays, drug discovery, and clinical diagnosis.
(−)‐(1R,2R,7S,8aR)‐1,2,7‐Trihydroxyindolizidine ((−)‐7S‐OH‐Lentiginosine): Synthesis and Proapoptotic Activity
Authors: Cordero Franca M. , Bonanno Paola , Khairnar Bhushan B. , Cardona Francesca , Brandi Alberto , Macchi Beatrice , Minutolo Antonella , Grelli Sandro , Mastino Antonio 
Published: February 2012

AbstractAn improved approach for the preparation of enantiopure 3,4‐bis‐tert‐butoxypyrroline N‐oxides is presented. Etherification of 1‐benzylpyrrolidine‐3,4‐diol with tBuOAc/HClO4 and subsequent N‐debenzylation and pyrrolidine oxidation with oxone affords the cyclic nitrone reliably and in superior yield. The enantiomer derived from D‐tartaric acid was exploited in a modified synthesis of (−)‐7S‐OH‐lentiginosine. The activity of this trihydroxy indolizidine in inducing the apoptosis of tumour cell lines of lymphoid and epithelial origin is examined.
Do Investors Value Sustainability Reports? A Canadian Study
Authors: Berthelot Sylvie , Coulmont Michel , Serret Vanessa 
Published: February 2012

ABSTRACTThe publication of sustainability reports has increased significantly in most western countries in recent years. The fact that this type of reporting is on a voluntary basis in a number of countries raises questions about whether capital markets take these reports into account. This study attempts to address this question, drawing on a sample of Canadian companies listed on the Toronto Stock Exchange. The results suggest that investors positively value this type of reporting. These findings support the relevance of initiatives like the Global Reporting Initiative, the UN Global Compact, and that launched by the International Organization for Standardization (ISO), which focus on the development of recognized guidelines for sustainability reporting. Our findings can also serve as arguments to facilitate a firm's voluntary commitment to such types of disclosures. Copyright © 2012 John Wiley & Sons, Ltd and ERP Environment.
Carcinosarcoma de novo of the parotid gland: Case report
Authors: Taki Nizar H. , Laver Nora , Quinto Tobi , Wein Richard O. 
Published: February 2012

AbstractBackgroundSalivary gland carcinosarcoma is a rare and aggressive malignant mixed tumor in which carcinomatous and sarcomatous elements coexist and metastasize together. The tumor may occur in the background of a preexisting pleomorphic adenoma or may arise de novo. We report a case of a woman presenting with a carcinosarcoma de novo of the parotid gland.Methods and ResultsOur patient underwent surgical resection and adjuvant radiotherapy and demonstrates no evidence of recurrence at 14 months posttreatment.ConclusionsReview of the literature supports combined modality, surgery with postoperative radiation, as the standard of care for this malignancy, although the long‐term prognosis for these patients is unclear. © 2012 Wiley Periodicals, Inc. Head Neck, 2013
Lipoleiomyosarcoma of the larynx
Authors: Trijolet J. P. , Lescanne E. , Morinière S. , Robier A. , Bakhos D. 
Published: February 2012

AbstractBackgroundLipoleiomyosarcoma is a rare tumor consisting of well‐differentiated liposarcoma and leiomyosarcoma. The ear–nose–throat location of lipoleiomyosarcoma has not been previously described.Methods and ResultsA 37‐year‐old man with a dysphagia had a dyspnea after an endoscopy. A large tumor was exteriorized from the man's mouth. The lesion was pedicled to the epiglottis. A histologic examination determined that the tumor was a lipoleiomyosarcoma. MDM2 and CDK4 gene amplification were positive. Due to the risk of recurrence, a second intervention was performed to complete the excision.ConclusionThese tumors develop in cavities slowly and gradually. The treatment of this lesion is surgical with a sufficient resection margin. © 2012 Wiley Periodicals, Inc. Head Neck, 2013
A Direct Immersion System for Peptide Enrichment
Authors: Tai Dar‐Fu , Lin Yee‐Fung , Lu Kuo‐Hao , Chen Guan‐Yu , Shu Hun‐Chi 
Published: February 2012

AbstractA complementary peptide separation and purification system, using a novel, artificial, affinity‐type extraction material, is described. Cellulose paper was first coated with a 3‐methacryloxypropyltrimethoxysilane (MPS) layer, followed by imprinting with peptides, to form an approximately 2‐μm layer of film (molecularly imprinted polymer film; MIPF) on both sides and resulted in an increased affinity toward the corresponding template as well as to matched polypeptides. MIPF‐cellulose paper (MIFC) was immersed in 2% peptide solution (acetonitrile/water) for the sorption of targeted‐peptides at room temperature for an hour in a 96‐well microtiter plate. Desorption of targeted‐peptides from the MIPF‐ and NIPF (non‐imprinted polymeric film)‐coated filter papers was nearly complete (∼99%) in two desorptions of 10 min using 5% acetic acid in water. Clean extracts of targeted‐peptides were obtained demonstrating the suitability of MIPF‐coated filter papers for the extraction or analysis of biological samples. To compare their extraction characteristics under various conditions, analyses were carried out by an enzyme‐linked immunosorbent assay (ELISA) microplate reader as peptide‐detecting/peptide‐capturing microarrays. In load ability studies using acetonitrile/water, peptide masses up to 100 μg could be applied onto a piece of MIPF coated filter paper (0.7 cm in diameter).
Forensic Application of Atomic Force Microscopy ― Questioned Document
Authors: Chen Syuan‐Zhen , Tsai Tung‐Lin , Chen Yung‐Fou 
Published: February 2012

AbstractAs the field of nanotechnology develops several material and structure in nano‐scale has become part of our daily life. By the steady improvement of current nanotechnology and detection methods, scientific discovery can progress considerably in the long run. Recently, these precise detecting methods have caught the eyes of forensic circle around the world. One of the most notable is atomic force microscopy (AFM), which performs imaging based on the interactive force between the probe and the sample surface. Compared to other optical microscopy, in the area of detecting surface on nano‐scale, AFM demonstrates several advantages such as its non‐destructive nature and its ability to produce high resolution images and detect different properties of a sample (height, viscoelasticity, and electromagnetism). In Taiwan, this area still remains untouched, although many notable applications of this technique have been reported. This report follows the developments mentioned above, utilizes the advantages of AFM, progressing the first step in analyzing forensic exhibits. It is our hope that AFM will become a new detection method in the domestic forensic area, and allow us to keep up with international developments.
A numerical meshless particle method in solving the magnetoencephalography forward problem
Authors: Ala G. , Di Blasi G. , Francomano E. 
Published: February 2012

SUMMARYIn this paper, a numerical meshless particle method is presented in order to solve the magnetoencephalography forward problem for analyzing the complex activation patterns in the human brain. The forward problem is devoted to compute the scalp potential and magnetic field distribution generated by a set of current sources representing the neural activity, and in this paper, it has been approached by means of the smoothed particle hydrodynamics method suitably handled. The Poisson equation generated by the quasi‐stationary Maxwell's curl equations, by assuming Neumann boundary conditions has been considered, and the current sources have been simulated by current dipoles. The adopted meshless particle model has provided good results in agreement with the analytical ones and by overcoming the drawback of the mesh generation. The numerical model has been validated, at first, in computing the electric potential and the external magnetic field for a dipole plunged near the upper surface of a homogeneous sphere simulating the human brain. Simulation results obtained by simulating two concentric spheres with different conductivities are also reported. Moreover, in order to better assess the validity of the proposed approach, a realistic human brain cortex model has been also simulated and compared with boundary element method results. A satisfactory agreement has been reached. Copyright © 2012 John Wiley & Sons, Ltd.
Tocopherols in rose hips (Rosa spp.) during ripening
Authors: Andersson Staffan C , Olsson Marie E , Gustavsson Karl‐Erik , Johansson Eva , Rumpunen Kimmo 
Published: February 2012

AbstractBACKGROUND: Rose hips are used as a food ingredient and in health products. They are rich in various bioactive compounds such as carotenoids and vitamin C, but data on their vitamin E content (tocopherols and tocotrienols) are limited. In this study, four different species ofRosa were analysed for tocopherol and tocotrienol content during ripening in three different years.RESULTS: Only α‐ and γ‐tocopherol were found in the fleshy parts of the rose hips, and the tocopherol content and vitamin E activity varied depending on date of harvesting, species and year. The amount of vitamin E activity differed between species of Rosa and years, whereas the changes during ripening were relatively small.CONCLUSION: The choice of species must be considered if tocopherol content is to be optimised when rose hips are used as a food ingredient. Copyright © 2012 Society of Chemical Industry
Living with rotationplasty—Quality of life in rotationplasty patients from childhood to adulthood
Authors: Forni Cristiana , Gaudenzi Noemi , Zoli Marina , Manfrini Marco , Benedetti Maria Grazia , Pignotti Elettra , Chiari Paolo 
Published: February 2012

AbstractBackgroundKnowledge about the long‐term sequelae of rotationplasty, in adults treated surgically in childhood for Osteosarcoma in the lower limb, mainly concerns function and performance; the aim of this study is to explore the experience and the Quality of Life (QoL) of the patients who underwent Rotationplasty from 1986 to 2006 in Italy.MethodsQuantitative test: Administration SF‐36 questionnaire to 20 subjects aged ≥16 years. Qualitative test: Semi‐structured interview recorded in 10 of these subjects.ResultsGreater well‐being was found in the Mental Component Summary (MCS) scale of subjects aged over 24 years, with a score mean of 54.2 (±4.8), compared with that of those aged up to 24 years, with a mean score of 48.0 (±6.6), P = 0.04. Relational and emotional difficulty in adolescence, which had been partially overcome in adulthood, was revealed.ConclusionsThe assessment of QoL by the SF‐36 questionnaire was effective, and a correspondence was found between what emerged from the quantitative study and the contents of the interview. Knowing the strengths and weaknesses that were highlighted is indispensable for parents and operators when choosing among the various surgical options and to facilitate coming to terms with the injury and the “scars”. J. Surg. Oncol. 2012;105:331–336. © 2012 Wiley Periodicals, Inc.