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https://www.readbyqxmd.com/read/29786416/zinc-oxide-enhanced-piezoelectret-polypropylene-microfiber-for-mechanical-energy-harvesting
#1
Jianxiong Zhu, Yali Zhu, Weixing Song, Hui Wang, Min Gao, Minkyu Cho, Inkyu Park
This paper reports zinc oxide (ZnO) coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high voltage corona charging method...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29785092/patient-satisfaction-with-care-in-an-urban-tertiary-referral-academic-glaucoma-clinic-in-the-us
#2
Kristen M Peterson, Carrie E Huisingh, Christopher Girkin, Cynthia Owsley, Lindsay A Rhodes
Background: The purpose of this study was to determine the factors associated with glaucoma patients' satisfaction with their medical care by fellowship-trained glaucoma specialists in an urban tertiary referral clinic in the US. Methods: A total of 110 established patients aged ≥60 years with a diagnosis of either primary open angle glaucoma, glaucoma suspect, or ocular hypertension monitored by an ophthalmologist with fellowship training in glaucoma were enrolled at an academic, urban, tertiary referral eye clinic...
2018: Patient Preference and Adherence
https://www.readbyqxmd.com/read/29781093/hippocampal-place-cell-encoding-of-sloping-terrain
#3
Blake S Porter, Robert Schmidt, David K Bilkey
Effective navigation relies on knowledge of one's environment. A challenge to effective navigation is accounting for the time and energy costs of routes. Irregular terrain in ecological environments poses a difficult navigational problem as organisms ought to avoid effortful slopes to minimize travel costs. Route planning and navigation have previously been shown to involve hippocampal place cells and their ability to encode and store information about an organism's environment. However, little is known about how place cells may encode the slope of space and associated energy costs as experiments are traditionally carried out in flat, horizontal environments...
May 21, 2018: Hippocampus
https://www.readbyqxmd.com/read/29780686/design-of-a-novel-wheeled-tensegrity-robot-a-comparison-of-tensegrity-concepts-and-a-prototype-for-travelling-air-ducts
#4
Francisco Carreño, Mark A Post
Efforts in the research of tensegrity structures applied to mobile robots have recently been focused on a purely tensegrity solution to all design requirements. Locomotion systems based on tensegrity structures are currently slow and complex to control. Although wheeled locomotion provides better efficiency over distances there is no literature available on the value of wheeled methods with respect to tensegrity designs, nor on how to transition from a tensegrity structure to a fixed structure in mobile robotics...
2018: Robotics and Biomimetics
https://www.readbyqxmd.com/read/29779953/a-quality-assurance-device-for-measuring-afterloader-performance-and-transit-dose-for-nasobiliary-high-dose-rate-brachytherapy
#5
Christopher L Deufel, John P Mullins, Mark J Zakhary
PURPOSE: Nasobiliary high-dose-rate (HDR) brachytherapy has emerged as an effective tool to boost the radiation dose for patients with unresectable perihilar cholangiocarcinoma. This work describes a quality assurance (QA) tool for measuring the HDR afterloader's performance, including the transit dose, when the source wire travels through a tortuous nasobiliary catheter path. METHODS AND MATERIALS: The nasobiliary QA device was designed to mimic the anatomical path of a nasobiliary catheter, including the nasal, stomach, duodenum, and bile duct loops...
May 17, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29771953/mitochondrial-disease-patient-motivations-and-barriers-to-participate-in-clinical-trials
#6
Zarazuela Zolkipli-Cunningham, Rui Xiao, Amy Stoddart, Elizabeth M McCormick, Amy Holberts, Natalie Burrill, Shana McCormack, Lauren Williams, Xiaoyan Wang, John L P Thompson, Marni J Falk
BACKGROUND: Clinical treatment trials are increasingly being designed in primary mitochondrial disease (PMD), a phenotypically and genetically heterogeneous collection of inherited multi- system energy deficiency disorders that lack effective therapy. We sought to identify motivating factors and barriers to clinical trial participation in PMD. METHODS: A survey study was conducted in two independent mitochondrial disease subject cohorts. A discovery cohort invited subjects with well-defined biochemical or molecularly- confirmed PMD followed at a single medical center (CHOP, n = 30/67 (45%) respondents)...
2018: PloS One
https://www.readbyqxmd.com/read/29771398/a-cadaveric-study-of-the-mean-distance-of-the-radial-artery-during-the-approach-to-the-first-carpometacarpal-joint
#7
Baris Yildirim, Daniel E Hess, Jesse B Seamon, Matthew L Lyons, A Rashard Dacus
Multiple surgical procedures have been described to treat first carpometacarpal (CMC) arthritis. Although the superiority of one procedure over the others continues to be a controversial topic, they all approach the trapezium and require careful attention to the surrounding structures. One potential complication is injury to the radial artery, which lies in close proximity to the trapezium and is often encountered during surgical approach. Using cadaveric specimens, the authors dissected to identify and isolate the radial artery as it travels in the forearm, wrist, and hand while being careful not to disturb its native course...
May 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29769582/mathematical-models-of-human-mobility-of-relevance-to-malaria-transmission-in-africa
#8
John M Marshall, Sean L Wu, Hector M Sanchez C, Samson S Kiware, Micky Ndhlovu, André Lin Ouédraogo, Mahamoudou B Touré, Hugh J Sturrock, Azra C Ghani, Neil M Ferguson
As Africa-wide malaria prevalence declines, an understanding of human movement patterns is essential to inform how best to target interventions. We fitted movement models to trip data from surveys conducted at 3-5 sites throughout each of Mali, Burkina Faso, Zambia and Tanzania. Two models were compared in terms of their ability to predict the observed movement patterns - a gravity model, in which movement rates between pairs of locations increase with population size and decrease with distance, and a radiation model, in which travelers are cumulatively "absorbed" as they move outwards from their origin of travel...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769057/patterns-of-care-for-anal-cancer-in-the-united-states-a-comparison-between-academic-and-community-cancer-centers
#9
Victor E Pricolo, Matteo Bonvini, Carlo F Abelli
BACKGROUND: Management of squamous cell carcinoma of the anus (SCCA) is becoming more relevant, as its incidence increases. The purpose of this study was to investigate possible differences in patient population and care delivery for SCCA between academic and community cancer programs in the United States. METHODS: A review of available data from the American College of Surgeons Committee on Cancer National Cancer DataBase focused on gender, age, race, type of health insurance, comorbidity score, distance traveled for care, stage at diagnosis, and therapy utilization (surgery, chemotherapy, and radiation therapy) as first course of treatment (FCT)...
May 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29765067/wildfire-smoke-impacts-activity-and-energetics-of-wild-bornean-orangutans
#10
W M Erb, E J Barrow, A N Hofner, S S Utami-Atmoko, E R Vogel
Indonesia's peatlands experience frequent and intense wildfires, producing hazardous smoke with consequences for human health, yet there is a lack of research into adverse effects on wildlife. We evaluated the effects of smoke on the activity and energy balance of Bornean orangutans (Pongo pygmaeus wurmbii) in a peat swamp forest at the Tuanan Research Station, Central Kalimantan. We collected behavioural data and urine samples from four adult flanged males before, during, and after wildfires between March 2015 and January 2016...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764393/telerehabilitation-versus-traditional-centre-based-pulmonary-rehabilitation-for-people-with-chronic-respiratory-disease-protocol-for-a-randomised-controlled-trial
#11
Narelle S Cox, Christine F McDonald, Jennifer A Alison, Ajay Mahal, Richard Wootton, Catherine J Hill, Janet Bondarenko, Heather Macdonald, Paul O'Halloran, Paolo Zanaboni, Ken Clarke, Deidre Rennick, Kaye Borgelt, Angela T Burge, Aroub Lahham, Bruna Wageck, Hayley Crute, Pawel Czupryn, Amanda Nichols, Anne E Holland
BACKGROUND: Pulmonary rehabilitation is an effective therapeutic intervention for people with chronic respiratory disease. However, fewer than 5% of eligible individuals receive pulmonary rehabilitation on an annual basis, largely due to limited availability of services and difficulties associated with travel and transport. The Rehabilitation Exercise At Home (REAcH) study is an assessor-blinded, multi-centre, randomised controlled equivalence trial designed to compare the efficacy of home-based telerehabilitation and traditional centre-based pulmonary rehabilitation in people with chronic respiratory disease...
May 15, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29764368/airborne-geographical-dispersal-of-q-fever-from-livestock-holdings-to-human-communities-a-systematic-review-and-critical-appraisal-of-evidence
#12
Nicholas J Clark, Ricardo J Soares Magalhães
BACKGROUND: Q fever is a zoonotic disease caused by Coxiella burnetii. This bacterium survives harsh conditions and attaches to dust, suggesting environmental dispersal is a risk factor for outbreaks. Spatial epidemiology studies collating evidence on Q fever geographical contamination gradients are needed, as human cases without occupational exposure are increasing worldwide. METHODS: We used a systematic literature search to assess the role of distance from ruminant holdings as a risk factor for human Q fever outbreaks...
May 15, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29763419/tabu-search-algorithm-for-the-distance-constrained-vehicle-routing-problem-with-split-deliveries-by-order
#13
Yangkun Xia, Zhuo Fu, Lijun Pan, Fenghua Duan
The vehicle routing problem (VRP) has a wide range of applications in the field of logistics distribution. In order to reduce the cost of logistics distribution, the distance-constrained and capacitated VRP with split deliveries by order (DCVRPSDO) was studied. We show that the customer demand, which can't be split in the classical VRP model, can only be discrete split deliveries by order. A model of double objective programming is constructed by taking the minimum number of vehicles used and minimum vehicle traveling cost as the first and the second objective, respectively...
2018: PloS One
https://www.readbyqxmd.com/read/29762594/flexible-binary-phase-photon-sieves-on-polyimide-substrates-by-laser-ablation
#14
Matthew N Julian, David G MacDonnell, Mool C Gupta
A binary phase diffractive optical element photon sieve is fabricated by direct laser ablation of a thin, flexible polyimide substrate with a nanosecond-pulsed ultraviolet laser. The binary phase photon sieve operates at 633 nm and was designed with 19 rings and a focal length of 400 mm. The total time to fabricate the photon sieves was tens of seconds. The surface properties of the laser-processed areas are examined, and the optical performance of the photon sieve is characterized and compared to FDTD simulations...
May 15, 2018: Optics Letters
https://www.readbyqxmd.com/read/29762446/prospective-analysis-of-the-greater-occipital-nerve-location-in-patients-undergoing-occipital-nerve-decompression
#15
Jacqueline S Israel, Steve J Kempton, Ahmed M Afifi
BACKGROUND: Migraine surgery and onabotulinumtoxinA injections aim to deactivate neurovascular trigger points implicated in chronic headaches. The greater occipital nerve (GON) is a common trigger point. The depth of this nerve has not been previously described. The purpose of this study was to report the intraoperative location, including depth, of the GON in human subjects undergoing migraine surgery. METHODS: We reviewed records of patients who underwent GON decompression by a single surgeon...
May 14, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29762082/predicting-and-optimizing-microswimmer-performance-from-the-hydrodynamics-of-its-components-the-relevance-of-interactions
#16
Nicola Giuliani, Luca Heltai, Antonio DeSimone
Interest in the design of bioinspired robotic microswimmers is growing rapidly, motivated by the spectacular capabilities of their unicellular biological templates. Predicting the swimming speed and efficiency of such devices in a reliable way is essential for their rational design, and to optimize their performance. The hydrodynamic simulations needed for this purpose are demanding and simplified models that neglect nonlocal hydrodynamic interactions (e.g., resistive force theory for slender, filament-like objects that are the typical propulsive apparatus for unicellular swimmers) are commonly used...
May 15, 2018: Soft Robotics
https://www.readbyqxmd.com/read/29760243/underutilisation-of-public-access-defibrillation-is-related-to-retrieval-distance-and-time-dependent-availability
#17
Charles D Deakin, Steve Anfield, Gillian A Hodgetts
INTRODUCTION: Public access defibrillation doubles the chances of neurologically intact survival following out-of-hospital cardiac arrest (OHCA). Although there are increasing numbers of defibrillators (automated external defibrillator (AEDs)) available in the community, they are used infrequently, despite often being available. We aimed to match OHCAs with known AED locations in order to understand AED availability, the effects of reduced AED availability at night and the operational radius at which they can be effectively retrieved...
May 14, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29759954/identifying-national-availability-of-abortion-care-and-distance-from-major-us-cities-systematic-online-search
#18
Alice F Cartwright, Mihiri Karunaratne, Jill Barr-Walker, Nicole E Johns, Ushma D Upadhyay
BACKGROUND: Abortion is a common medical procedure, yet its availability has become more limited across the United States over the past decade. Women who do not know where to go for abortion care may use the internet to find abortion facility information, and there appears to be more online searches for abortion in states with more restrictive abortion laws. While previous studies have examined the distances women must travel to reach an abortion provider, to our knowledge no studies have used a systematic online search to document the geographic locations and services of abortion facilities...
May 14, 2018: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29759134/behavioural-alterations-and-morphological-changes-are-attenuated-by-the-lack-of-trpa1-receptors-in-the-cuprizone-induced-demyelination-model-in-mice
#19
Kata Bölcskei, Gábor Kriszta, Éva Sághy, Maja Payrits, Éva Sipos, Anett Vranesics, Zoltán Berente, Hajnalka Ábrahám, Péter Ács, Sámuel Komoly, Erika Pintér
We have recently reported that the Transient Receptor Potential Ankyrin 1 (TRPA1) receptor deficiency significantly attenuated cuprizone-induced demyelination by reducing the apoptosis of mature oligodendrocytes. The aim of the present study was to gather additional data on the role of TRPA1 by investigating the time course of behavioural alterations and morphological changes in cuprizone-treated TRPA1 receptor gene-deficient mice. Demyelination was induced by feeding male wild-type (WT) and TRPA1 gene-deleted (TRPA1 KO) mice with 0...
July 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29755765/travel-distance-and-use-of-salvage-palliative-chemotherapy-in-patients-with-metastatic-colorectal-cancer
#20
Shahid Ahmed, Mahjabeen Iqbal, Duc Le, Nayyer Iqbal, Punam Pahwa
Background: Salvage palliative chemotherapy in metastatic colorectal cancer has been associated with significant improvement in survival. However, not all patients receive all available therapies. Travel burden can affect patient access and use of future therapy. The present study aims to determine relationship between travel distance (TD) and salvage palliative chemotherapy in patients with metastatic colorectal cancer. Method: A patient cohort diagnosed with metastatic colorectal cancer during 2006-2010 in the province of Saskatchewan, Canada was studied...
April 2018: Journal of Gastrointestinal Oncology
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