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https://www.readbyqxmd.com/read/29756035/the-ultrafast-dynamics-and-conductivity-of-photoexcited-graphene-at-different-fermi-energies
#1
Andrea Tomadin, Sam M Hornett, Hai I Wang, Evgeny M Alexeev, Andrea Candini, Camilla Coletti, Dmitry Turchinovich, Mathias Kläui, Mischa Bonn, Frank H L Koppens, Euan Hendry, Marco Polini, Klaas-Jan Tielrooij
For many of the envisioned optoelectronic applications of graphene, it is crucial to understand the subpicosecond carrier dynamics immediately following photoexcitation and the effect of photoexcitation on the electrical conductivity-the photoconductivity. Whereas these topics have been studied using various ultrafast experiments and theoretical approaches, controversial and incomplete explanations concerning the sign of the photoconductivity, the occurrence and significance of the creation of additional electron-hole pairs, and, in particular, how the relevant processes depend on Fermi energy have been put forward...
May 2018: Science Advances
https://www.readbyqxmd.com/read/29753388/frank-s-sign
#2
Satvinder Singh Bakshi
No abstract text is available yet for this article.
May 9, 2018: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/29752139/intraprocedural-parenchymal-blood-volume-is-a-predictor-of-treatment-response-for-chemoembolization-in-hepatocellular-carcinoma-results-of-a-prospective-study
#3
Nevin de Korompay, Mohammed Alshammari, Darren Klass, Frank Y Chou, John Chung, Stephen Ho, David M Liu
PURPOSE: To evaluate cone-beam parenchymal blood volume (PBV) before and after embolization as a predictor of radiographic response to transarterial chemoembolization in unresectable hepatocellular carcinoma (HCC). MATERIALS AND METHODS: A phase IIa prospective clinical trial was conducted in patients with HCCs > 1.5 cm undergoing chemoembolization; 52 tumors in 40 patients with Barcelona Clinic Liver Criteria stage B disease met inclusion criteria. Pre- and postembolization PBV analysis was performed with a semiquantitative best-fit methodology for index tumors, with a predefined primary endpoint of radiographic response at 3 months...
May 8, 2018: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29750762/the-functional-anatomy-of-the-superficial-fat-compartments-of-the-face-a-detailed-imaging-study
#4
Thilo L Schenck, Konstantin C Koban, Alexander Schlattau, Konstantin Frank, Jonathan M Sykes, Stefan Targosinski, Katharina Erlbacher, Sebastian Cotofana
BACKGROUND: The superficial (subcutaneous) facial fat compartments contribute to the signs of facial aging, but a comprehensive anatomic description of their location and their functional behavior during the application of soft tissue fillers still remains elusive. METHODS: We investigated 30 fresh frozen cephalic specimens from 13 male and 17 female Caucasian body donors (age: 78.3 ± 14.2 years, body mass index: 23.1 ± 5.3 kg/m). Upright positioned contrast enhanced CT scans and additional MR imaging was performed...
March 15, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29746673/frank-s-sign-in-ischemic-stroke
#5
Liliana R Santos, Patrícia Martins, Teresa Melo, Ana P Vilas
No abstract text is available yet for this article.
May 8, 2018: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29744642/gadolinium-deposition-within-the-paediatric-brain-no-increased-intrinsic-t1-weighted-signal-intensity-within-the-dentate-nucleus-following-the-administration-of-a-minimum-of-four-doses-of-the-macrocyclic-agent-gadobutrol
#6
Jonathan R Young, Joe Qiao, Iren Orosz, Noriko Salamon, Mark A Franke, Hyun J Kim, Whitney B Pope
OBJECTIVES: To determine whether repeated administration of the macrocyclic gadolinium-based contrast agent (GBCA) gadobutrol in children is associated with T1-weighted hyperintensity within the dentate nucleus, an imaging surrogate for gadolinium deposition. METHODS: With institutional review board approval, we identified a cohort of eight patients aged 18 years or younger who underwent at least four gadobutrol-enhanced magnetic resonance imaging (MRI) examinations of the brain from 2013 to 2017...
May 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29740504/epidural-abscess-presenting-as-severe-depression-with-suicidal-ideations-case-report
#7
Erin D'Agostino, Vyacheslav Makler, David F Bauer
Background: Epidural abscess (EDA) is an uncommon form of intracranial infection that generally presents with fever, headache, and focal neurologic deficit. Imaging generally reveals a lentiform collection with diffusion restriction on diffusion weighted image. We present an interesting case in which a patient with EDA presented with three weeks of depression with suicidal ideations. The patient displayed no notable infectious signs and the imaging was suggestive of chronic subdural hematoma (SDH) rather than EDA...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29739886/fully-gapped-d-wave-superconductivity-in-cecu-2-si-2
#8
Guiming Pang, Michael Smidman, Jinglei Zhang, Lin Jiao, Zongfa Weng, Emilian M Nica, Ye Chen, Wenbing Jiang, Yongjun Zhang, Wu Xie, Hirale S Jeevan, Hanoh Lee, Philipp Gegenwart, Frank Steglich, Qimiao Si, Huiqiu Yuan
The nature of the pairing symmetry of the first heavy fermion superconductor CeCu2 Si2 has recently become the subject of controversy. While CeCu2 Si2 was generally believed to be a [Formula: see text]-wave superconductor, recent low-temperature specific heat measurements showed evidence for fully gapped superconductivity, contrary to the nodal behavior inferred from earlier results. Here, we report London penetration depth measurements, which also reveal fully gapped behavior at very low temperatures. To explain these seemingly conflicting results, we propose a fully gapped [Formula: see text] band-mixing pairing state for CeCu2 Si2 , which yields very good fits to both the superfluid density and specific heat, as well as accounting for a sign change of the superconducting order parameter, as previously concluded from inelastic neutron scattering results...
May 8, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29701258/evaluation-of-smartphone-based-testing-to-generate-exploratory-outcome-measures-in-a-phase-1-parkinson-s-disease-clinical-trial
#9
Florian Lipsmeier, Kirsten I Taylor, Timothy Kilchenmann, Detlef Wolf, Alf Scotland, Jens Schjodt-Eriksen, Wei-Yi Cheng, Ignacio Fernandez-Garcia, Juliane Siebourg-Polster, Liping Jin, Jay Soto, Lynne Verselis, Frank Boess, Martin Koller, Michael Grundman, Andreas U Monsch, Ronald B Postuma, Anirvan Ghosh, Thomas Kremer, Christian Czech, Christian Gossens, Michael Lindemann
BACKGROUND: Ubiquitous digital technologies such as smartphone sensors promise to fundamentally change biomedical research and treatment monitoring in neurological diseases such as PD, creating a new domain of digital biomarkers. OBJECTIVES: The present study assessed the feasibility, reliability, and validity of smartphone-based digital biomarkers of PD in a clinical trial setting. METHODS: During a 6-month, phase 1b clinical trial with 44 Parkinson participants, and an independent, 45-day study in 35 age-matched healthy controls, participants completed six daily motor active tests (sustained phonation, rest tremor, postural tremor, finger-tapping, balance, and gait), then carried the smartphone during the day (passive monitoring), enabling assessment of, for example, time spent walking and sit-to-stand transitions by gyroscopic and accelerometer data...
April 27, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29691933/pcr-analysis-of-a-prescription-vegetarian-diet-and-use-in-three-dogs-with-cutaneous-adverse-food-reactions
#10
Erin E Aufox, Elizabeth R May, Linda A Frank, Stephen A Kania
BACKGROUND: Cutaneous adverse food reaction (CAFR) is diagnosed by performing an elimination diet trial utilizing prescription or home-cooked diets followed by provocative challenge. OBJECTIVES: To report findings of PCR analysis of a prescription vegetarian diet (RCV) for undeclared proteins of animal origin, as well as to describe its utilization for diagnosis and management of dogs suspected of having CAFR. ANIMALS: Three client-owned dogs...
April 24, 2018: Veterinary Dermatology
https://www.readbyqxmd.com/read/29684510/the-rodent-tibia-fracture-model-a-critical-review-and-comparison-with-the-complex-regional-pain-syndrome-literature
#11
REVIEW
Frank Birklein, Alaa Ibrahim, Tanja Schlereth, Wade S Kingery
Distal limb fracture is the most common cause of complex regional pain syndrome (CRPS), thus the rodent tibia fracture model (TFM) was developed to study CRPS pathogenesis. This comprehensive review summarizes the published TFM research and compares these experimental results with the CRPS literature. The TFM generated spontaneous and evoked pain behaviors, inflammatory symptoms (edema, warmth) and trophic changes (skin thickening, osteoporosis) resembling symptoms in early CRPS. Neuropeptides, inflammatory cytokines, and nerve growth factor (NGF) have been linked to pain behaviors, inflammation, and trophic changes in the TFM model and proliferating keratinocytes were identified as the primary source of cutaneous cytokines and NGF...
April 20, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29678761/a-recombinase-polymerase-amplification-assay-for-the-diagnosis-of-atypical-pneumonia
#12
Sebastian Kersting, Valentina Rausch, Frank F Bier, Markus von Nickisch-Rosenegk
Pneumonia is one of the most common and potentially lethal infectious conditions worldwide. Streptococcus pneumoniae is the pathogen most frequently associated with bacterial community-acquired pneumonia, while Legionella pneumophila is the major cause for local outbreaks of legionellosis. Both pathogens can be difficult to diagnose since signs and symptoms are nonspecific and do not differ from other causes of pneumonia. Therefore, a rapid diagnosis within a clinically relevant time is essential for a fast onset of the proper treatment...
April 17, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29670328/treatment-outcomes-in-the-dry-eye-amniotic-membrane-dream-study
#13
Marguerite B McDonald, Hosam Sheha, Sean Tighe, Susan B Janik, Frank W Bowden, Amit R Chokshi, Michael A Singer, Seema Nanda, Mujtaba A Qazi, Damon Dierker, Adam T Shupe, Brittany J McMurren
Purpose: To evaluate the efficacy of cryopreserved amniotic membrane (CAM) in reducing signs and symptoms of dry eye disease (DED) in a large patient population. Methods: A retrospective chart review at 10 clinical sites was done of patients with refractory DED who received CAM and completed at least 3 months of follow-up. Data collected were demographics; medical history including previous and current ocular treatment, diagnosis, clinical presentations, comorbidity, duration and frequency of treatment with CAM; and concomitant medications...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29669109/opposing-actions-of-developmental-trichloroethylene-and-high-fat-diet-co-exposure-on-markers-of-lipogenesis-and-inflammation-in-autoimmune-prone-mice
#14
Sarah J Blossom, Lorenzo Fernandes, Shasha Bai, Sangeeta Khare, Kuppan Gokulan, Youzhong Yuan, Michael Dewall, Frank A Simmen, Kathleen M Gilbert
Trichloroethylene (TCE) is a widespread environmental pollutant associated with immunotoxicity and autoimmune disease. Previous studies showed that mice exposed from gestation through early life demonstrated CD4+ T cell alterations and autoimmune hepatitis. Determining the role of one environmental risk factor for any disease is complicated by the presence of other stressors. Based on its known effects, we hypothesized that developmental overnutrition in the form of a moderately high fat diet (HFD) consisting of 40% kcal fat would exacerbate the immunotoxicity and autoimmune-promoting effects of low-level (<10 μg/kg/day) TCE in autoimmune-prone MRL+/+ mice over either stressor alone...
April 12, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29665753/apical-elongation-of-molar-teeth-in-captive-microtus-voles
#15
Denise M Imai, Risa Pesapane, Christopher J Conroy, Christina N Alarcón, Nora Allan, Russell A Okino, Jennifer Fung, Brian G Murphy, Frank J M Verstraete, Janet E Foley
Molar apical elongation (MAE) was the leading cause for euthanasia or death in a captive breeding colony of endangered Amargosa voles ( Microtus californicus scirpensis). Clinical signs included ocular discharge, abnormal mastication, dyspnea, abnormal mentation, weight loss, and death. Although the severity varied, all molars in all quadrants were affected. When severe, the overgrown molar reserve crown and apex protruded into the nasal meatuses, the orbit, the calvarial vault and through the ventral margin of the mandible...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29661122/lymphocytic-mural-folliculitis-resembling-epitheliotropic-lymphoma-in-tigers-panthera-tigris
#16
Mee-Ja M Sula, Linda A Frank, Edward C Ramsay
A striking form of lymphocytic mural folliculitis is described in 6 tigers ( Panthera tigris). Clinically, all tigers exhibited regionally extensive chronic, variably waxing and waning alopecia with minimal scaling and crusting most pronounced over the head, neck, and shoulders. More severely affected tigers exhibited marked hyperpigmentation and lichenification. Pruritus was not a feature. Tigers generally lacked signs of systemic illness and clinical pathology findings were unremarkable. Histologic examination of skin biopsies revealed infiltrative lymphocytic mural folliculitis extending the length of the hair follicle...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29650466/prodrome-in-epilepsy
#17
REVIEW
Frank M C Besag, Michael J Vasey
BACKGROUND: Prodromal symptoms (PS) of epileptic seizures are clinically well-recognized but relatively little researched. The purpose of this review was to examine the evidence in the literature for the existence of prodrome and the reported frequency and nature of prodromal characteristics. METHODS: We performed a PubMed review of the clinical characteristics, frequency, and duration of PS in papers published between 2007 and 2017. We also reviewed findings from prospective studies into the predictive performance of prodrome...
April 9, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29644393/treatment-of-carcinoma-in-situ-of-the-urinary-bladder-with-an-alpha-emitter-immunoconjugate-targeting-the-epidermal-growth-factor-receptor-a-pilot-study
#18
Michael E Autenrieth, Christof Seidl, Frank Bruchertseifer, Thomas Horn, Florian Kurtz, Benedikt Feuerecker, Calogero D'Alessandria, Christian Pfob, Stephan Nekolla, Christos Apostolidis, Saed Mirzadeh, Jürgen E Gschwend, Markus Schwaiger, Klemens Scheidhauer, Alfred Morgenstern
PURPOSE: Patients with carcinoma in situ (CIS) of the bladder refractory to bacillus Calmette-Guérin (BCG) treatment are usually treated with cystectomy. Therefore, new treatment options with preservation of the urinary bladder are needed. The objective of the study was to investigate the feasibility, safety and efficacy of a novel targeted alpha-emitter immunotherapy for CIS after BCG treatment failure. METHODS: A pilot study was conducted in 12 patients (age range 64-86 years, ten men, two women) with biopsy-proven CIS of the bladder refractory to BCG treatment...
April 11, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29628853/crohn-s-disease-associated-silent-aspiration-in-the-outpatient-setting-anesthesiologists-beware
#19
Christopher Snell, Scott Coleman, Michele Van Hal, Farshad Rashidian, Gary Okum, Michael Stuart Green
Every anesthesia provider fears aspiration of gastric contents during an anesthetic, and it may occur even in the absence of overt signs such as coughing or choking. Whether the aspiration is frank or silent, catastrophic and deleterious consequences may ensue. Therefore, familiarity with risk factors for silent aspiration is essential. Crohn's disease reportedly delays gastric emptying making these patients more susceptible to silent aspiration during surgery. Anesthesia providers must be cognizant of this risk and vigilant in the recognition to formulate a specific treatment plan preoperatively...
April 2018: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/29627139/structured-reporting-of-ct-angiography-runoff-examinations-of-the-lower-extremities
#20
Bastian O Sabel, Jessica L Plum, Michael Czihal, Christian Lottspeich, Frank Schönleben, Gabor Gäbel, Regina Schinner, Franziska Schoeppe, Felix G Meinel
OBJECTIVES: The aim was to evaluate the effect of structured reporting of computed tomography angiography (CTA) runoff studies on clarity, completeness, clinical relevance, usefulness of the radiology reports, further testing, and therapy in patients with known or suspected peripheral arterial disease. METHODS: Conventional reports (CRs) and structured reports (SRs) were generated for 52 patients who had been examined with a CTA runoff examination of the lower extremities...
April 4, 2018: European Journal of Vascular and Endovascular Surgery
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