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https://www.readbyqxmd.com/read/28644498/the-mechanism-of-anomalous-hardening-in-transition-metal-monoborides
#1
Yongcheng Liang, Zhenbang Gao, Ping Qin, Li Gao, Chun Tang
The quest for novel nanomaterials with unusual functionalities continues to be a central challenge to modern nanoscience. Here we report a surprisingly anomalous hardening behavior exhibited by a class of transition-metal monoborides (TMB). Most remarkable is the occurrence of the intrinsic hardness maximum at the valence-electron concentration (VEC) of about 8 electrons per formula unit (e per f.u.); both lower and higher VECs lead to the decrease of hardness, contrasting with the expected positive correlation between hardness and VEC...
June 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28644305/management-of-in-the-bag-intraocular-lens-dislocation-into-vitreous-cavity-with-temporary-10-0-polypropylene-suture-support-and-ab-externo-scleral-fixation
#2
https://www.readbyqxmd.com/read/28644218/bilateral-anterior-shoulder-dislocation
#3
Bruce S Rudy, William L Hennrikus
Shoulders are the most common major joint to become disarticulated, and shoulder dislocation is a frequent patient presentation to the ED. Bilateral shoulder dislocations, however, are rare and typically caused by seizure activity or electrocution. Posterior disarticulation is most common following seizure activity. This article describes an adolescent girl who dislocated both shoulders anteriorly following seizure activity.
July 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28644054/the-thermoexpandable-nitinol-stent-a-long-term-alternative-in-patients-without-nephropathy-or-malignancy
#4
Simone Bier, Bastian Amend, Elena Wagner, Steffen Rausch, Johannes Mischinger, Eva Neumann, Viktoria Stühler, Joerg Hennenlotter, Tilman Todenhoefer, Arnulf Stenzl, Jens Bedke, Stephan Kruck
OBJECTIVE: The aim of this study was to investigate the long-term outcome of a thermoexpandable nickel-titanium nitinol ureteral stent (Memokath 051™) and to identify individual risk factors for failure. MATERIALS AND METHODS: This retrospective single-centre study included 125 patients who underwent implantation of the self-expandable Memokath 051 stent. Complications, indwelling time and reason for explantation were recorded. Analyses were stratified by gender, age, body mass index, American Society of Anesthesiologists score, estimated glomerular filtration rate (eGFR), side, localization and cause of the stricture...
June 23, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28643720/inferior-subconjunctival-dislocation-of-posterior-chamber-intraocular-lens-after-blunt-trauma
#5
Amit Mohan, Navjot Kaur, Vinod Sharma
Traumatic subconjunctival dislocation of the posterior chamber intraocular lens (PCIOL) is a rare and emergency condition. Here, we report an interesting variation of rare case of inferior subconjuctival dislocation of PCIOL in a 75-year-old female patient following blunt trauma to her right eye with cow's head. All the previous literature with subconjuctival dislocation of PCIOL has reported the superior dislocation of intraocular lens. Inferior subconjunctival dislocation has never been reported in previous literature...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643677/modulator-effect-of-watercress-against-cyclophosphamide-induced-oxidative-stress-in-mice
#6
Natalia A Casanova, María Fernanda Simoniello, Marcela Mabel López Nigro, Marta A Carballo
Watercress (Nasturtium officinale, Cruciferae; W. Aiton) is a vegetable widely consumed in our country, with nutritional and potentially chemopreventive properties. Previous reports from our laboratory demonstrated the protective effect of watercress juice against DNA damage induced by cyclophosphamide in vivo. In this study, we evaluated the in vivo effect of cress plant on the oxidative stress in mice. Animals were treated by gavage with different doses of watercress juice (0.5 and 1g/kg body weight) for 15 consecutive days before intraperitoneal injection of cyclophosphamide (100 mg/kg body weight)...
2017: Medicina
https://www.readbyqxmd.com/read/28642667/surgical-treatment-of-acromioclavicular-dislocation-using-the-endobutton
#7
Renato Loureiro Teodoro, Alexandre Yukio Nishimi, Luciano Pascarelli, Roberto Rangel Bongiovanni, Marcelo Andreotti Perez Velasco, Eiffel Tsuyoshi Dobashi
OBJECTIVE: To evaluate the clinical and radiographic results of 23 patients diagnosed with acute type III acromioclavicular dislocation treated with the Endobutton. METHODS: Twenty-three patients with a diagnosis of type III acromioclavicular dislocation were treated surgically. RESULTS: Twenty-one patients were male (91.3%) and 2 (8.7%) were female. The dominant side was affected in 15 patients (65.21%) and the non-dominant side in 8 patients (34...
May 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642666/shoulder-disorders-in-an-outpatient-clinic-an-epidemiological-study
#8
Eduardo Angeli Malavolta, Mauro Emilio Conforto Gracitelli, Jorge Henrique Assunção, Gustavo de Mello Ribeiro Pinto, Arthur Zorzi Freire da Silveira, Arnaldo Amado Ferreira
OBJECTIVE: To describe shoulder disorders in patients evaluated by two shoulder and elbow surgeons. METHODS: This cross-sectional study analyzed patients evaluated by two authors, excluding acute fractures and dislocations and patients with symptoms not involving the shoulder. Age and sex distribution was determined for the different diagnoses. RESULTS: We evaluated 1001 patients. Mean age was 51.43±15.15 years and 51.0% were female. Disorders of the rotator cuff occurred in 64...
May 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642460/standing-wave-effect-and-fractal-structure-in-dislocation-evolution
#9
P Li, Z F Zhang
Theoretical model required for the evolution of regular dislocation pattern should simultaneously take into account both static distribution and dynamic evolution of dislocation pattern. In principle, there exists a stable uniformly moving dislocation with both core and far field advancing at the same constant velocity, which suggests the existence of the traveling waves representing moving dislocation. Therefore, one new term "dislocation wave" is defined by simultaneously consisting of both an elastic wave and a dislocation in each wavefront...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28641970/the-interaction-of-caseload-and-usage-in-determining-outcomes-of-unicompartmental-knee-arthroplasty-a-meta-analysis
#10
Thomas W Hamilton, James M Rizkalla, Leonidas Kontochristos, Barbara E Marks, Stephen J Mellon, Christopher A F Dodd, Hemant G Pandit, David W Murray
BACKGROUND: Outcomes after unicompartmental knee arthroplasty (UKA) are variable and influenced by caseload (UKA/y) and usage (percentage of knee arthroplasty that are UKA), which relates to indications. This meta-analysis assesses the relative importance of these factors. METHODS: MEDLINE (Ovid), Embase (Ovid), and Web of Science (ISI) were searched for consecutive series of cemented Phase 3 Oxford medial UKA. The primary outcome was revision rate/100 observed component years (% pa) with subgroup analysis based on caseload and usage...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28640628/oriented-gold-nanorods-and-gold-nanorod-chains-within-smectic-liquid-crystal-topological-defects
#11
Brigita Rožič, Jérôme Fresnais, Celine Molinaro, Joseph Calixte, Shivakumar Umadevi, Stephanie Lau-Truong, Nordin Felidj, Tobias Kraus, Fabrice Charra, Vincent Dupuis, Torsten Hegmann, Celine Fiorini-Debuisschert, Bruno Gallas, Emmanuelle Lacaze
We show that the use of oriented linear arrays of smectic A defects, the so-called smectic oily streaks, enables the orientation of gold nanorods (GNRs) for a large range of GNR diameters, ranging from 7 to 48 nm, and for various ligands. For the small GNRs it enables oriented end-to-end small chains of GNRs when the density is increased from around 2 GNRs/μm(2) to around 6 GNRs/μm(2). We have characterized the orientation of single GNRs by spectrophotometry and two-photon luminescence (TPL). A strongly anisotropic absorption of the composites and an on-off switching of GNR luminescence, both controlled by incident light polarization, are observed, revealing an orientation of the GNRs mostly parallel to the oily streaks...
June 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28637324/the-effects-of-phytosterols-on-the-sexual-behavior-and-reproductive-function-in-the-japanese-quail-coturnix-coturnix-japonica
#12
Mohammad Ibrahim Qasimi, Kentaro Nagaoka, Gen Watanabe
Phytosterols (PS) are plant origin sterols naturally found in many foods and added as food additives. Since 1950, PS have attracted considerable attention due to their ability to lower serum cholesterol and inhibit cardiovascular disease (CVD). However, recent studies have found that PS act as endocrine-disrupting chemicals in laboratory animals. Therefore, this study was aimed at finding the mechanism(s) for PS effects on the sexual behaviors and reproductive functions in male Japanese quails (Coturnix coturnix japonica)...
June 16, 2017: Poultry Science
https://www.readbyqxmd.com/read/28635564/arthroscopic-fixation-of-acute-acromioclavicular-joint-disruption-with-tightrope%C3%A2-outcome-and-complications-after-minimum-2-2-5-years-follow-up
#13
Li-Feng Zhang, Bo Yin, Su Hou, Bing Han, De-Fa Huang
PURPOSE: To evaluate the midterm results of arthroscopic reconstruction of acute acromioclavicular (AC) joint disruption using TightRope™ system. METHODS AND MATERIAL: We retrospectively assess the results of 24 patients of acute AC joint dislocation who were operated using TightRope system. Constant and University of California, Los Angeles (UCLA) scores and coracoclavicular distance were calculated pre- and postoperatively. Data was entered into MS excel and analyzed using the SPSS version 17...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28634690/long-term-retromuscular-and-intraperitoneal-mesh-size-changes-within-a-randomized-controlled-trial-on-incisional-hernia-repair-including-a-review-of-the-literature
#14
P Rogmark, O Ekberg, A Montgomery
Purpose Ingrowth of fibroblasts in a polypropylene mesh may cause contraction and a later recurrence. We assessed mesh contraction in intraabdominal and retromuscular implantation after incisional hernia repair. METHODS: A cohort of patients within an RCT on laparoscopic (LHR) versus open hernia repair (OHR) had their mesh borders marked with metal clips. X-ray was performed on postoperative day 1 and after 1 year. Total length, width, and dislocation were measured. A tacker fixated large-pore polypropylene mesh was used in LHR, and a retromuscular small-pore heavy-weight mesh was sutured to the midline in OHR...
June 20, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28633801/total-talar-prosthesis-replacement-after-talar-extrusion
#15
Sébastien Ruatti, Clémentine Corbet, Mehdi Boudissa, Gael Kerschbaumer, Michel Milaire, Philippe Merloz, Jérôme Tonetti
Dislocation of the talus is a serious and extremely rare injury, with 86 cases reported in the published data in 20 years. The reference standard for case management involves replacement of the dislocated talus to restore the height and function of the tibiotalar joint. The risk of avascular necrosis remains very high, and the standard treatment in such cases is tibiotalar arthrodesis. We report the case of total dislocation of the talus, which was treated with the insertion of a custom total talar prosthesis affixed directly to the tibial cartilage at 6 months after injury...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633769/blisters-in-ankle-fractures-a-retrospective-cohort-study
#16
David González Quevedo, Juan Manuel Sánchez Siles, Facundo Rojas Tomba, Iskandar Tamimi Mariño, Manuel Francisco Bravo Bardaji, Francisco Villanueva Pareja
The most frequent postoperative complications after an ankle fracture are usually skin related. We present the results of a retrospective study of 112 patients with ankle fracture who had undergone open reduction and internal fixation from January 2014 to December 2014. The following features were analyzed: patient comorbidities, fracture type, the presence of an open fracture or fracture-dislocation, timing and duration of surgery, preoperative glucose level, and short-term complications (i.e., blisters, wound dehiscence, deep and superficial infections, and reintervention)...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633459/electron-microscopy-of-voids-in-si-formed-by-permeable-pulse-laser-irradiation
#17
Hiroyuki Iwata, Daisuke Kawaguchi, Hiroyasu Saka
Voids formed in Si by permeable laser irradiation were investigated by comprehensive electron microscopy. Two types of voids were identified: Type (1): This type was formed mostly closer to the entrance surface of a laser, and a considerable volume of a non-diamond Si (DS) phase was formed in the surrounding matrix. Type (2): This type was formed at the focus of an incident laser, and none of dislocations, cracks and non-DS phase was observed in the surrounding matrix. Type (1) voids are considered to be formed to accommodate volume change resulting from transformation from DS to the non-DS...
June 17, 2017: Microscopy
https://www.readbyqxmd.com/read/28633184/peritoneal-dialysis-catheter-position-evaluated-by-ultrasound-can-it-replace-abdomen-x-ray-in-patients-presenting-catheter-misplacement
#18
Matthias Zeiler, Luca Zanoli, Rosalia Viviana Scarfia, Stefano Santarelli, Antonio Granata
Background Malfunction of the peritoneal dialysis catheter is frequently caused by dislocation. The diagnostic approach is classically based on abdomen X-ray together with detailed case history and physical examination. Despite being rarely applied in clinical practice to evaluate catheter misplacement, ultrasound is a noninvasive, radiation-free technique that is potentially useful also to explore reasons for catheter malfunction. Consequently, we aimed to evaluate the diagnostic accuracy of ultrasound to identify peritoneal catheter misplacement...
June 20, 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/28633148/clinical-and-functional-results-of-119-patients-with-knee-dislocations
#19
Nicholas R Scarcella, Douglas S Weinberg, Stephen Bowen, Heather A Vallier
OBJECTIVES: To describe clinical results and functional outcomes of knee dislocations treated with a consistent strategy within our institution. DESIGN: Retrospective case series. SETTING: Level 1 trauma center. PATIENTS: One hundred nineteen patients were treated at one institution between 2000 and 2014 for knee dislocation. MAIN OUTCOME MEASUREMENTS: Knee range of motion, functional instability, and complications were recorded...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28631430/internal-cyclopexy-for-complicated-traumatic-cyclodialysis-cleft
#20
Cong Wang, Xiao-Yan Peng, Qi-Sheng You, Yi Liu, Xiu-Qin Pang, Peng-Fei Zheng, Jost B Jonas
PURPOSE: To assess the surgical and functional outcome of internal direct cyclopexy as therapy of complicated traumatic cyclodialysis. METHODS: The single-centre interventional case-series study included eyes with traumatic cyclodialysis who had consecutively been treated. Internal cyclopexy was performed using double-armed sutures introduced into the eye through the pars plana opposite to the cyclodialysis cleft and which were laid parallel to limbus. Additional procedures included cataract surgery, and pars plana vitrectomy...
June 20, 2017: Acta Ophthalmologica
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