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https://www.readbyqxmd.com/read/27910597/note-attenuation-motion-of-acoustically-levitated-spherical-rotor
#1
P Lü, Z Y Hong, J F Yin, N Yan, W Zhai, H P Wang
Here we observe the attenuation motion of spherical rotors levitated by near-field acoustic radiation force and analyze the factors that affect the duration time of free rotation. It is found that the rotating speed of freely rotating rotor decreases exponentially with respect to time. The time constant of exponential attenuation motion depends mainly on the levitation height, the mass of rotor, and the depth of concave ultrasound emitter. Large levitation height, large mass of rotor, and small depth of concave emitter are beneficial to increase the time constant and hence extend the duration time of free rotation...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910198/degradation-and-biocompatibility-of-photoembossed-plga-acrylate-blend-for-improved-cell-adhesion
#2
Nanayaa F Hughes-Brittain, Lin Qiu, Wen Wang, Ton Peijs, Cees W M Bastiaansen
We have shown previously that PMMA-acrylate photopolymers are biocomopatible and can exhibit improved cell adhesion compared to PMMA, due to an increase in negative surface charge caused by UV radiation PLGA has been used widely in soft tissue regeneration due to its high biocompatibility and cell adhesion. This polymer is also biodegradable and can be utilised in the field of vascular regeneration. In this study, PLGA is blended with a triacrylate monomer (TPETA) to create a degradable photopolymer blend. Surface relief structures are formed on this PLGA-TPETA by photoembossing...
December 2, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27909661/the-oblique-mattress-lasso-loop-stitch-for-arthroscopic-capsulolabral-repair
#3
Nata Parnes, Maryellen Blevins, Monica Morman, Paul Carey
Arthroscopic capsulolabral repair during shoulder stabilization surgery requires the use of suture anchors. Several arthroscopic suturing techniques for capsulolabral repair have been described, and each carries very specific advantages and disadvantages with regard to risk, patient satisfaction, and functional outcomes. The purpose of this report is to describe the oblique mattress lasso-loop stitch. This stitch (1) provides strong initial fixation of the labrum, (2) establishes labral height and allows for larger capsular plication if needed, (3) prevents the suture from cutting through the radial fibers of the glenoid labrum, (4) prevents knot migration to the articular side and loosening of the knot, and (5) requires fewer implants and preserves glenoid bone stock by increasing the amount of labrum and capsule that can be reattached to the glenoid with a single-loaded suture anchor...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909549/patients-presenting-for-colonoscopy-a-great-opportunity-to-screen-for-sleep-apnea
#4
Glenn Harvin, Eslam Ali, Amit Raina, William Leland, Sabeen Abid, Zahid Vahora, Hossein Movahed, Sumyra Kachru, Rick Tee
AIM: To discover the prevalence and the feasibility of screening for obstructive sleep apnea (OSA) in patients presenting for routine colonoscopy. METHODS: Adult patients having a colonoscopy for routine indications at our outpatient endoscopy center were eligible if they did not carry a diagnosis of OSA or had not had a prior sleep study. All patients were administered the Berlin questionnaire prior to the procedure. Mallampati, neck circumference, height, weight, and BMI were obtained for each patient...
November 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27908610/economics-human-biology-and-inequality-a-review-of-puzzles-and-recent-contributions-from-a-deatonian-perspective
#5
Joerg Baten
The Nobel laureate Angus Deaton concentrated his work on puzzling developments and phenomena in economics. Puzzles are exciting elements in economics, because readers feel challenged by the question of how they can be solved. Among the puzzles analyzed by Deaton are: (1) Mortality increase of white, U.S. non-Hispanic men (2000 to today); (2) Why are height and income sometimes closely correlated, but not always?; (3) Height inequality among males and females; and (4) The Indian puzzle of declining consumption of calories during overall expenditure growth...
November 18, 2016: Economics and Human Biology
https://www.readbyqxmd.com/read/27908263/prevalence-and-predictors-of-overweight-and-obesity-in-patients-with-pituitary-dysfunctions
#6
Birgit Harbeck, Sven Danneberg, Amir Hossein Rahvar, Heiner Mönig, Christian Stefan Haas
BACKGROUND: Patients with hypothalamic-pituitary disorders (HPD) may be of increased risk to develop overweight and obesity, thereby fostering cardiovascular events. However, it remains unclear if patients with pituitary dysfunctions per se have an increased risk of becoming obese. OBJECTIVE: The objective of this study was to evaluate prevalence and to identify possible predictors of overweight and obesity in patients with pituitary dysfunctions. METHODS: A total of 121 out-patients having various causes for HPD were assessed for height and body weight; body mass index (BMI) was calculated and correlated with clinical features...
November 30, 2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/27908164/comparison-of-low-contrast-detectability-between-two-ct-reconstruction-algorithms-using-voxel-based-3d-printed-textured-phantoms
#7
Justin Solomon, Alexandre Ba, François Bochud, Ehsan Samei
PURPOSE: To use novel voxel-based 3D printed textured phantoms in order to compare low-contrast detectability between two reconstruction algorithms, FBP (filtered-backprojection) and SAFIRE (sinogram affirmed iterative reconstruction) and determine what impact background texture (i.e., anatomical noise) has on estimating the dose reduction potential of SAFIRE. METHODS: Liver volumes were segmented from 23 abdominal CT cases. The volumes were characterized in terms of texture features from gray-level co-occurrence and run-length matrices...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907989/experimental-and-modeling-analysis-of-asymmetrical-on-off-oscillation-in-coupled-non-identical-inverted-bottle-oscillators
#8
Ji Jia, Zhichun Shangguan, Haihong Li, Ye Wu, Weiqing Liu, Jinghua Xiao, Jürgen Kurths
Upside-down bottles containing water which are common in our daily life exhibit rich vibration dynamics. Rich dynamic regimes are observed in bottle oscillators by directly measuring the pressure difference between inside and outside of a bottle with the aid of pressure sensors. We observe experimentally that an asymmetrical oscillation process between the outflow of water and the inflow of air is formed in a single bottle oscillator and, in addition, a kind of 2:1 frequency synchronization occurs in a coupled system of two non-identical bottle oscillators...
November 2016: Chaos
https://www.readbyqxmd.com/read/27907454/menopause-is-associated-with-accelerated-lung-function-decline
#9
Kai Triebner, Bobette Matulonga, Ane Johannessen, Sandra Suske, Bryndís Benediktsdóttir, Pascal Demoly, Shyamali C Dharmage, Karl A Franklin, Judith Garcia Aymerich, José Antonio Gullón Blanco, Joachim Heinrich, Mathias Holm, Debbie Jarvis, Rain Jõgi, Eva Lindberg, Jesús Martínez Moratalla Rovira, Nerea Muniozguren Agirre, Isabelle Pin, Nicole Probst-Hensch, Luca Puggini, Chantal Raherison, José Luis Sánchez-Ramos, Vivi Schlünssen, Jordi Sunyer, Cecilie Svanes, Steinar Hustad, Bénédicte Leynaert, Francisco Gómez Real
RATIONALE: Menopause is associated with changes in sex hormones, which affect immunity, inflammation, and osteoporosis and may impair lung function. Lung function decline has not previously been investigated in relation to menopause. OBJECTIVES: To study whether lung function decline, assessed by forced vital capacity and forced expiratory volume in one second, is accelerated in women who undergo menopause. METHODS: The population-based longitudinal European Community Respiratory Health Survey provided serum samples, spirometry and questionnaire data about respiratory and reproductive health from three study waves (N=1438)...
December 1, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27906553/short-adult-stature-predicts-impaired-beta-cell-function-insulin-resistance-glycemia-and-type-2-diabetes-in-finnish-men
#10
Jagadish Vangipurapu, Alena Stančáková, Raimo Jauhiainen, Johanna Kuusisto, Markku Laakso
CONTEXT: Recent studies have highlighted the role of height in complex diseases but conflicting information has been reported on height as a predictor of changes in glycemia and risk of type 2 diabetes. OBJECTIVE: Our aim was to investigate the association of height with insulin sensitivity, insulin secretion, glycemia, type 2 diabetes and cardiovascular disease in a large prospective population-based study. DESIGN: The study included 8,746 Finnish men (mean±SD, age 57...
December 1, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27906284/electrically-reconfigurable-split-ring-resonator-covered-by-nematic-liquid-crystal-droplet
#11
Kepeng Qiu, Ning Jia, Zijun Liu, Chen Wu, Yuancheng Fan, Quanhong Fu, Fuli Zhang, Weihong Zhang
In this paper, an electrically reconfigurable split ring resonator (SRR) covered by sessile droplet of nematic liquid crystal (LC) is demonstrated experimentally. The magnetic resonance of single SRR decreases gradually by 237 MHz as external bias voltage is applied, resulting from increasing fringing capacitance due to liquid crystal molecular reorientation along local electric field distribution. The transmission phase can be modulated by more than 100 degrees. Furthermore, frequency tuning range of SRR increases with the droplet height, because of the significant enhancement for SRR capacitance difference between LC states with/without bias voltage...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27905963/accuracy-of-self-reported-height-weight-and-waist-circumference-in-a-general-adult-chinese-population
#12
Shurong Lu, Jian Su, Quanyong Xiang, Jinyi Zhou, Ming Wu
BACKGROUND: Self-reported height, weight, and waist circumference (WC) are widely used to estimate the prevalence of obesity, which has been increasing rapidly in China, but there is limited evidence for the accuracy of self-reported data and the determinants of self-report bias among the general adult Chinese population. METHODS: Using a multi-stage cluster sampling method, 8399 residents aged 18 or above were interviewed in the Jiangsu Province of China. Information on self-reported height, weight, and WC, together with information on demographic factors and lifestyle behaviors, were collected through structured face-to-face interviews...
August 11, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905943/social-patterns-and-differentials-in-the-fertility-transition-in-the-context-of-hiv-aids-evidence-from-population-surveillance-rural-south-africa-1993-2013
#13
Brian Houle, Athena Pantazis, Chodziwadziwa Kabudula, Stephen Tollman, Samuel J Clark
BACKGROUND: Literature is limited on the effects of high prevalence HIV on fertility in the absence of treatment, and the effects of the introduction of sustained access to antiretroviral therapy (ART) on fertility. We summarize fertility patterns in rural northeast South Africa over 21 years during dynamic social and epidemiological change. METHODS: We use data for females aged 15-49 from the Agincourt health and socio-demographic surveillance system (1993-2013)...
March 25, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905094/improved-work-function-of-poly-3-4-ethylenedioxythiophene-poly-styrenesulfonic-acid-and-its-effect-on-hybrid-silicon-organic-heterojunction-solar-cells
#14
Xiaojuan Shen, Ling Chen, Jianmei Pan, Yue Hu, Songjun Li, Jie Zhao
Hybrid silicon/organic solar cells have been recently extensively investigated due to their simple structure and low-cost fabrication process. However, the efficiency of the solar cells is greatly limited by the barrier height as well as the carrier recombination at the silicon/organic interface. In this work, hydrochloroplatinic acid (H2PtCl6) is employed into the poly(3,4-ethlenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) solution, and the work function (WF) of the PEDOT:PSS layer has been successfully improved...
December 2016: Nanoscale Research Letters
https://www.readbyqxmd.com/read/27904964/only-walking-matters-assessment-following-lumbar-stenosis-decompression
#15
S Budithi, Rohit Dhawan, Andrew Cattell, Birender Balain, David Jaffray
PURPOSE: Multiple outcome measures exist to evaluate the outcomes of spinal decompression surgery; however, these tend to be complex and are difficult to express to the patient pre-operatively to accurately guide their expectations. We present outcomes, in terms of walking distance measurement, of a prospective single surgeon series of 76 consecutive patients with spinal stenosis. METHODS: 76 patients (mean age 68.8 years; 48-91 years) had decompression surgery using spinous process osteotomy...
November 30, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27904797/preseason-jump-and-hop-measures-in-male-collegiate-basketball-players-an-epidemiologic-report
#16
Jason Brumitt, Amy Engilis, Dale Isaak, Amy Briggs, Alma Mattocks
BACKGROUND: Injuries are inherent in basketball with lower extremity (LE) injury rates reported as high as 11.6 per 1000 athletic exposures (AEs); many of these injuries result in time loss from sport participation. A recent trend in sports medicine research has been the attempt to identify athletes who may be at risk for injury based on measures of preseason fitness. HYPOTHESIS/PURPOSE: The purpose of this prospective cohort study was to determine if the standing long jump (SLJ) and/or the single-leg hop (SLH) for distance functional performance tests (FPT) are associated with non-contact time loss lower quadrant (LQ, defined as lower extremities or low back) injury in collegiate male basketball players...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904428/a-cross-sectional-anthropometric-study-of-cranial-capacity-among-ukwuani-people-of-south-nigeria
#17
Dennis Erhisenebe Eboh, Ewaen Churchill Okoro, Kingsley Afoke Iteire
BACKGROUND: Cranial capacity is used as a measure of brain volume and has a relationship with age and gender. The purpose of this study was to provide normative data and population-, age- and gender-specific regression formulae related to cranial capacity using head dimensions among the Ukwuani people of Nigeria. METHODS: This study included 605 subjects grouped according to age as follows: 6-12 years, 13-19 years and ≥20 years. A cross-sectional study design using multistage sampling technique was adopted...
September 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/27903995/prevalence-of-hypertension-and-obesity-related-hypertension-in-urban-school-aged-children-in-rasht
#18
Hamidreza Badeli, Amir Hassankhani, Zahra Naeemi, Sahar Hosseinzadeh, Shima Mehrabi, Motahhareh Pourkarimi, Sajjad Hosseini, Pourya Rahbar Nikoukar, Reza Nezamdoust, Alireza Rahimi, Asemeh Pourrajabi
INTRODUCTION: Hypertension is a worldwide health concern. Complications of hypertension not only affect adult patients, but also involve children. Given the importance of assessing children with hypertension in order to decrease adulthood complications, we aimed to assess the prevalence of hypertension in urban school-aged children in Rasht, Iran. MATERIALS AND METHODS: This cross-sectional study was conducted on 2072 school-aged children in Rasht, Iran, from January 2013 to December 2015...
November 2016: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/27903055/local-landscape-effects-on-population-dynamics-of-ixodes-ricinus
#19
Naveed Asghar, Mona Petersson, Magnus Johansson, Patrik Dinnetz
Ixodes ricinus, a common tick in Europe, transmits severe tickborne pathogens (TBPs). In Sweden, both prevalence and incidence of tick-borne infections have increased during the last few decades, and a majority of the cases is reported from the area around Stockholm. Among ticks, transmission of TBPs involves co-feeding of susceptible larvae or nymphs with infected ticks on the same host. Seasonal synchrony of immature stages and total tick abundance are important factors for the probability of horizontal transmission of TBPs...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27902945/artificial-cervical-disc-replacement-with-the-prestige-lp-prosthesis-for-the-treatment-of-non-contiguous-2-level-cervical-degenerative-disc-disease-a-minimum-24-month-follow-up
#20
Tingkui Wu, Beiyu Wang, Chen Ding, Yang Meng, Jigang Lou, Yi Yang, Hao Liu
OBJECTIVE: We describe the features of non-contiguous 2-level cervical degenerative disc disease (NCDDD), investigate the safety and feasibility of artificial cervical disc replacement (ACDR) for the treatment of NCDDD, and expect that our study will provide spine surgeons with an alternative procedure for NCDDD. METHODS: Twenty-five patients with NCDDD received ACDR with a Prestige-LP prosthesis. Clinical outcomes were evaluated using the 36-Short Form (SF-36, Mental Component Summary [MCS] and Physical Component Summary [PCS]), Visual Analog Scale (VAS), Japanese Orthopedic Association (JOA), and Neck Disability Index (NDI) scores...
November 17, 2016: Clinical Neurology and Neurosurgery
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