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Andrey Zavadsky, Lev Shemer
This manuscript describes an experimental procedure that allows obtaining diverse quantitative information on temporal and spatial evolution of water waves excited by time-dependent and steady wind forcing. Capacitance-type wave gauge and Laser Slope Gauge (LSG) are used to measure instantaneous water surface elevation and two components of the instantaneous surface slope at a number of locations along the test section of a wind-wave facility. The computer-controlled blower provides airflow over the water in the tank whose rate can vary in time...
February 13, 2018: Journal of Visualized Experiments: JoVE
Zakaria Aboulbanine, Naïma El Khayati
The use of phase space in medical linear accelerator Monte Carlo (MC) simulations significantly improves the execution time and leads to results comparable to those obtained from full calculations. The classical representation of phase space stores directly the information of millions of particles, producing bulky files. This paper presents a virtual source model (VSM) based on a reconstruction algorithm, taking as input a compressed file of roughly 800 kb derived from phase space data freely available in the International Atomic Energy Agency (IAEA) database...
March 19, 2018: Physics in Medicine and Biology
Thais Regina de Mattos Lourenco, Priscila Katsumi Matsuoka, Edmund Chada Baracat, Jorge Milhem Haddad
INTRODUCTION AND HYPOTHESIS: People are increasingly aware of healthy lifestyles. Extenuating practice can injure the pelvic floor. Urinary incontinence (UI) is a prevalent condition in women whether they exercise professionally or not. The most common symptom is stress UI. It is reported in a large variety of sports and may interfere with everyday life or training, leading athletes to change or compromise their performance or risk compromising it. We aimed to assess the prevalence of UI in female athletes and to determine whether the type of sport might also influence UI...
March 19, 2018: International Urogynecology Journal
Geoffrey S Meltzner, James T Heaton, Yunbin Deng, Gianluca De Luca, Serge H Roy, Joshua C Kline
Each year thousands of individuals require surgical removal of their larynx (voice box) due to trauma or disease, and thereby require an alternative voice source or assistive device to verbally communicate. Although natural voice is lost after laryngectomy, most muscles controlling speech articulation remain intact. Surface electromyographic (sEMG) activity of speech musculature can be recorded from the neck and face, and used for automatic speech recognition to provide speech-to-text or synthesized speech as an alternative means of communication...
December 2017: IEEE/ACM Transactions on Audio, Speech, and Language Processing
Carl A Johnson, Katherine L Wood, Amber L Melvin, Brandon F Lebow, Peter A Knight
Aortic root replacement is typically performed through a median sternotomy. The right anterior mini-thoracotomy approach has been shown to decrease hospital length of stay in aortic valve surgery when compared to sternotomy. This approach is rare in ascending aortic surgery due to technical challenges which include exposure and annular suture placement. Automated suturing technology is now available to facilitate the placement of annular sutures. The use of a camera greatly enhances visualization of the aortic root...
2018: Journal of Visualized Surgery
Hardaway Chun-Kwan Chan, Weeraya Ka-Yan Ho, Patrick Shu-Hang Yung
Background/Objective: The aim of this study was to examine the effect of sprint cycling training on the intermittent run performance, sprinting speed, and change of direction (COD) ability of recreational intermittent sports athletes. Methods: Sixteen participants participated in the study. The experimental group (EG, n = 8) received a total of 12 sessions of sprint cycling training in a 4-week period and the control group (CG, n = 8) received no training. Both EG and CG were instructed to maintain their daily activity during the 4-week period...
January 2018: Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology
Fengchen Chen, Xin Su, Qing Ye, Jianfeng Fu
A full scale snow melting system with heat pipe technology is built in this work, which avoids the negative effects on concrete structure and environment caused by traditional deicing chemicals. The snow melting, ice-freezing performance and temperature distribution characteristics of heat pipe concrete runway were discussed by the outdoor experiments. The results show that the temperature of the concrete pavement is greatly improved with the heat pipe system. The environment temperature and embedded depth of heat pipe play a dominant role among the decision variables of the snow melting system...
2018: TheScientificWorldJournal
Mariosimone Zoccali, Simone Cappello, Luigi Mondello
The present research is focused on the use of a triple quadrupole mass spectrometer (QqQ MS) coupled with flow modulated comprehensive two-dimensional gas chromatography (FM GC × GC) for a multilevel elucidation of biodegradation potentiality of natural marine microbial populations during a bioremediation (biostimulation) treatment. The crude oil used for the evaluation of the bioremediation process, namely Dansk Blend Pier E1, represents a very complex sample. Hence, in order to understand the metabolic activity of microbial populations during the bioremediation process, a GC × GC system was used...
March 12, 2018: Journal of Chromatography. A
Alessandro L Colosio, S Pogliaghi
INTRODUCTION: Performance during army loaded runs provides a synthetic indicator of a soldier's capacity to move while carrying loads and thereby remain able to execute a mission. The aim of this study was to estimate and compare the energy expenditure (EE) of army loaded runs, conducted in a field environment using laboratory-based equations and HR index (HRindex ). METHODS: 45 Ranger recruits had HR monitored during three loaded runs (10, 15 and 20 km) in full military equipment in the field environment...
March 17, 2018: Journal of the Royal Army Medical Corps
Enda King, Andrew Franklyn-Miller, Chris Richter, Eamon O'Reilly, Mark Doolan, Kieran Moran, Siobhan Strike, Éanna Falvey
BACKGROUND: Clinical assessments and rehabilitation in athletic groin pain (AGP) have focused on specific anatomical structures and uniplanar impairments rather than whole body movement. OBJECTIVE: To examine the effectiveness of rehabilitation that targeted intersegmental control in patients with AGP and to investigate post rehabilitation changes in cutting biomechanics. METHODS: Two hundred and five patients with AGP were rehabilitated focusing on clinical assessment of intersegmental control, linear running and change of direction mechanics in this prospective case series...
March 17, 2018: British Journal of Sports Medicine
Seaim Lwin Aye, Kei Fujiwara, Asuka Ueki, Nobuhide Doi
Although compartmentalized self-replication (CSR) and compartmentalized partnered replication (CPR) are powerful tools for directed evolution of proteins and gene circuits, limitations remain in the emulsion PCR process with the wild-type Taq DNA polymerase used so far, including long run times, low amounts of product, and false negative results due to inhibitors. In this study, we developed a high-efficiency mutant of DNA polymerase I from Thermus thermophilus HB27 (Tth pol) suited for CSR and CPR. We modified the wild-type Tth pol by (i) deletion of the N-terminal 5' to 3' exonuclease domain, (ii) fusion with the DNA-binding protein Sso7d, (iii) introduction of four known effective point mutations from other DNA polymerase mutants, and (iv) codon optimization to reduce the GC content...
March 14, 2018: Biochemical and Biophysical Research Communications
Eric Chung, Run Wang, David Ralph, Laurence Levine, Gerald Brock
BACKGROUND: Despite published guidelines on Peyronie's disease (PD), there are limited data on actual surgical practice among surgeons. AIM: To evaluate the surgical practice patterns in PD among surgeons from different continents and members of various sexual medicine societies. METHODS: An anonymous survey on various pre-, intra-, and postoperative aspects of PD surgical care was distributed in printed format during International Society of Sexual Medicine meetings and as an online survey to International Society of Sexual Medicine members...
March 14, 2018: Journal of Sexual Medicine
Qun Zuo, Shu-Chen Wang, Xin-Kai Yu, Wei-Wei Chao
PURPOSE: Macrophages are known to be important for healing numerous injured tissues depending on their functional phenotypes in response to different stimuli. The objective of this study was to reveal macrophage phenotypic changes involved in exercise-induced skeletal muscle injury and regeneration. METHODS: Adult male Sprague-Dawley rats experienced one session of downhill running (16° decline, 16 m/min) for 90 min. After exercise the blood and soleus muscles were collected at 0 h, 6 h, 12 h, 1 d, 2 d, 3 d, 1 w and 2 w after exercise, separately...
February 20, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
M Haas, J T Siveke, M Schenk, M M Lerch, K Caca, J Freiberg-Richter, L Fischer von Weikersthal, F Kullmann, A Reinacher-Schick, M Fuchs, S Kanzler, V Kunzmann, T J Ettrich, S Kruger, C B Westphalen, S Held, V Heinemann, S Boeck
INTRODUCTION: In metastatic pancreatic ductal adenocarcinoma (mPDAC) treatment, erlotinib is known to be more effective in patients developing skin rash. Treatment with the FOLFIRINOX regimen is only performed in fit patients following defined inclusion criteria. The present study investigates the efficacy of gemcitabine plus erlotinib (gem/erlotinib) in rash-positive patients fit for FOLFIRINOX. PATIENTS AND METHODS: For this prospective phase II study, 150 patients were recruited in 20 centres...
March 14, 2018: European Journal of Cancer
Pınar Sağıroğlu, Ufuk Hasdemir, Gülşen Altınkanat Gelmez, Burak Aksu, Onur Karatuna, Güner Söyletir
In this study, the performance of the "RESIST-3 O.K.N. K-SeT" (Coris BioConcept, Gembloux, Belgium) immunochromatographic assay was evaluated in 132 Klebsiella pneumoniae comprising 102 carbapenem resistant and 30 carbapenem susceptible isolates. Genotypically known isolates of Gram negative bacteria (n=22) including various species were also tested by the assay as controls. The isolates tested by the immunochromatographic assay and also were run PCR for blaKPC , blaIMP , blaVIM , blaNDM , and blaOXA-48 ...
March 1, 2018: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
Paolo Sartori, Enrico Chiarello, Gaurav Jayaswal, Matteo Pierno, Giampaolo Mistura, Paola Brun, Adriano Tiribocchi, Enzo Orlandini
We systematically investigate the role of different swimming patterns on the concentration distribution of bacterial suspensions confined between two flat walls, by considering wild-type motility Escherichia coli and Pseudomonas aeruginosa, which perform Run and Tumble and Run and Reverse patterns, respectively. The experiments count motile bacteria at different distances from the bottom wall. In agreement with previous studies, an accumulation of motile bacteria close to the walls is observed. Different wall separations, ranging from 100 to 250μm, are tested...
February 2018: Physical Review. E
Michael J Ingargiola, Felipe Molina Burbano, Amy Yao, Saba Motakef, Paymon Sanati-Mehrizy, Nikki M Burish, Lisa R David, Peter J Taub
Background: The recently increased minimum aesthetic surgery requirements set by the Plastic Surgery Residency Review Committee of the ACGME highlight the importance of aesthetic surgery training for plastic surgery residents. Participation in resident aesthetic surgery clinics has become an important tool to achieve this goal. Yet, there is little literature on the current structure of these clinics. Objectives: The authors sought to evaluate current practices of aesthetic resident-run clinics in the United States...
March 14, 2018: Aesthetic Surgery Journal
Clément Niel, Christine Sinoquet, Christian Dina, Ghislain Rocheleau
Motivation: Large scale genome-wide association studies (GWAS) are tools of choice for discovering associations between genotypes and phenotypes. To date, many studies rely on univariate statistical tests for association between the phenotype and each assayed single nucleotide polymorphism (SNP). However, interaction between SNPs, namely epistasis, must be considered when tackling the complexity of underlying biological mechanisms. Epistasis analysis at large scale entails a prohibitive computational burden when addressing the detection of more than two interacting SNPs...
March 14, 2018: Bioinformatics
Mingfei Zeng, Huachuan Cao
Short chain fatty acids (SCFA) and ketone bodies recently emerged as important physiological relevant metabolites because of their association with microbiota, immunology, obesity and other metabolic states. They were commonly analyzed by GC-MS with long run time and laborious sample preparation. In this study we developed a novel LC-MS/MS method using fast derivatization coupled with liquid-liquid extraction to detect SCFA and ketone bodies in plasma and feces. Several different derivatization reagents were evaluated to compare the efficiency, the sensitivity and chromatographic separation of structural isomers...
March 8, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Corina Nüesch, Jan-Arie Overberg, Hermann Schwameder, Geert Pagenstert, Annegret Mündermann
BACKGROUND: Instrumented treadmills with integrated pressure mats measure spatiotemporal, pressure and force parameters and are often used to investigate changes in gait patterns due to injury or rehabilitation. RESEARCH QUESTION: What is the within- and between-day repeatability of such an instrumented treadmill for spatiotemporal parameters, peak pressures and forces during walking and running? METHODS: Treadmill gait and running analysis were performed at 5...
March 7, 2018: Gait & Posture
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