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https://www.readbyqxmd.com/read/28651333/responses-of-lichen-communities-to-18%C3%A2-years-of-natural-and-experimental-warming
#1
Juha M Alatalo, Annika K Jägerbrand, Shengbin Chen, Ulf Molau
Background and Aims: Climate change is expected to have major impacts on high alpine and arctic ecosystems in the future, but empirical data on the impact of long-term warming on lichen diversity and richness are sparse. This study report the effects of 18 years of ambient and experimental warming on lichens and vascular plant cover in two alpine plant communities, a dry heath with sparse canopy cover (54 %) and a mesic meadow with a more developed (67 %) canopy cover, in sub-arctic Sweden...
June 22, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28651296/early-discharge-hospital-at-home
#2
REVIEW
Daniela C Gonçalves-Bradley, Steve Iliffe, Helen A Doll, Joanna Broad, John Gladman, Peter Langhorne, Suzanne H Richards, Sasha Shepperd
BACKGROUND: Early discharge hospital at home is a service that provides active treatment by healthcare professionals in the patient's home for a condition that otherwise would require acute hospital inpatient care. This is an update of a Cochrane review. OBJECTIVES: To determine the effectiveness and cost of managing patients with early discharge hospital at home compared with inpatient hospital care. SEARCH METHODS: We searched the following databases to 9 January 2017: the Cochrane Effective Practice and Organisation of Care Group (EPOC) register, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, CINAHL, and EconLit...
June 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28651276/white-paper-interventional-mri-current-status-and-potential-for-development-considering-economic-perspectives-part-1-general-application
#3
Jörg Barkhausen, Thomas Kahn, Gabriele A Krombach, Christiane K Kuhl, Joachim Lotz, David Maintz, Jens Ricke, Stefan O Schönberg, Thomas J Vogl, Frank K Wacker
Background MRI is attractive for the guiding and monitoring of interventional procedures due to its high intrinsic soft tissue contrast and the possibility to measure physiologic parameters like flow and cardiac function. Method The current status of interventional MRI for the clinical routine was analyzed. Results The effort needed for the development of MR-safe monitoring systems and instruments initially resulted in the application of interventional MRI only for procedures that could not be performed by other means...
July 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28651162/antibacterial-activity-corrosion-resistance-and-wear-behavior-of-spark-plasma-sintered-ta-5cu-alloy-for-biomedical-applications
#4
Jing Cui, Liang Zhao, Weiwei Zhu, Bi Wang, Cancan Zhao, Liming Fang, Fuzeng Ren
Tantalum has been widely used in orthopedic and dental implants. However, the major barrier to the extended use of such medical devices is the possibility of bacterial adhesion to the implant surface which will cause implant-associated infections. To solve this problem, bulk Ta-5Cu alloy has been fabricated by a combination of mechanical alloying and spark plasma sintering. The effect of the addition of Cu on the hardness, antibacterial activity, cytocompatibility, corrosion resistance and wear performance was systematically investigated...
June 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28651119/experimental-ultrasonic-characterization-of-polyester-based-materials-for-cultural-heritage-applications
#5
Andres Arciniegas, Loic Martinez, Arnaud Briand, Sophie Prieto, Stéphane Serfaty, Nicolas Wilkie-Chancellier
For several years, the Réunion des musées nationaux - Grand-Palais has produced polyester resin reproductions in order to replace marble sculptures that have weakened by outdoor exposure. These objects are made of a complex multilayered polyester composite material including reinforcements to ensure the mechanical strength of the final structure and mineral fillers that allow to imitate the original aesthetics. However, the final structure also weakens because of constant outdoor exposure and ageing. This observation leads today to conduct research related to the structural health monitoring of reproductions for preventive conservation of cultural heritage...
June 17, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28651117/mantle-cell-lymphoma-current-standards-of-care-and-future-directions
#6
REVIEW
Peter Martin, Paola Ghione, Martin Dreyling
Over the past decade we have seen significant changes in the biological characterization and strategies for treatment of mantle cell lymphoma (MCL). MCL is heterogeneous a disease, and so are the people that have it; although guidelines are appropriate, therapeutic approaches must be individualized based on a variety of factors. In this review, we summarize data on the range of therapeutic options, from observation in patients with slowly progressive low-tumor-burden MCL, to bendamustine-based regimens in typical MCL, to high-dose cytarabine-based regimens in young, fit patients...
June 13, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28651066/thalassemia-major-transfusion-and-chelation-or-transplantation
#7
REVIEW
Said Yousuf Mohamed
Thalassemia is the most common monogenic hematologic disease that affects millions in the world and kills thousands of patients every year. Without transfusion or transplantation, patients with thalassemia major are expected to die within months of diagnosis. However, long-term transfusion and chelation therapy is highly challenging for many developing countries where the disease is prevalent, representing a major and unsustainable health burden. Stem cell transplantation is the only cure for thalassemia. It has witnessed major developments that have made it less toxic, more successful, and feasible for a larger number of patients with diverse comorbidities and from a wider range of donors...
June 20, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28651050/brillouin-oscillations-from-single-au-nanoplate-opto-acoustic-transducers
#8
Kuai Yu, Tuphan Devkota, Gary Beane, Guo Ping Wang, Gregory V Hartland
Brillouin oscillations, which are GHz frequency waves that arise from the interaction of light with acoustic waves, are experiencing increasing applications in biology and materials science. They provide information about the speed of sound in the material they propagate in, and have recently been used in imaging applications. In the current study Brillouin oscillations in glass, water and polymer (PMMA) are observed through ultrafast transient reflectivity measurements using chemically synthesized Au nanoplates as opto-acoustic transducers...
June 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28650981/health-situation-of-migrant-and-minority-nurses-a-systematic-review
#9
Benjamin Schilgen, Albert Nienhaus, Oriana Handtke, Holger Schulz, Mike Mösko
INTRODUCTION: Globally, life expectancy together with multimorbidity and chronic diseases are increasing. This leads to a growing demand for care and hence for healthcare personnel and nurses. To meet this demand, healthcare workers from abroad are increasingly hired. The nurses' workplace in general is characterized by physically and psychologically demanding tasks, while that of migrant and minority nurses is additionally characterized by discriminatory practices. The present knowledge about the health of migrant and minority nurses and the terminology in this context are diverse...
2017: PloS One
https://www.readbyqxmd.com/read/28650884/can-surgeon-demographic-factors-predict-postoperative-complication-rates-after-elective-spinal-fusion
#10
Danielle S Chun, Ralph W Cook, Joseph A Weiner, Michael S Schallmo, Kathryn A Barth, Sameer K Singh, Ryan D Freshman, Alpesh A Patel, Wellington K Hsu
STUDY DESIGN: Retrospective cohort. OBJECTIVE: Determine whether surgeon demographic factors influence postoperative complication rates after elective spine fusion procedures. BACKGROUND: Surgeon demographic factors have been shown to impact decision making in the management of degenerative disease of the lumbar spine. Complication rates are frequently reported outcome measurements used to evaluate surgical treatments, quality-of-care, and determine health care reimbursements...
June 23, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28650842/ambient-temperature-and-stillbirth-a-multi-center-retrospective-cohort-study
#11
Sandie Ha, Danping Liu, Yeyi Zhu, Sung Soo Kim, Seth Sherman, Katherine L Grantz, Pauline Mendola
BACKGROUND: Climate change is expected to have adverse health effects, but the association between extreme ambient temperatures and stillbirth is unclear. OBJECTIVES: We investigated acute and chronic associations between extreme ambient temperatures and stillbirth risk, and estimated the attributable risk associated with local temperature extremes in the United States. METHODS: We linked 223,375 singleton births of gestation (2002-2008) from 12 U...
June 22, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28650836/deep-art-neural-model-for-biologically-inspired-episodic-memory-and-its-application-to-task-performance-of-robots
#12
Gyeong-Moon Park, Yong-Ho Yoo, Deok-Hwa Kim, Jong-Hwan Kim
Robots are expected to perform smart services and to undertake various troublesome or difficult tasks in the place of humans. Since these human-scale tasks consist of a temporal sequence of events, robots need episodic memory to store and retrieve the sequences to perform the tasks autonomously in similar situations. As episodic memory, in this paper we propose a novel Deep adaptive resonance theory (ART) neural model and apply it to the task performance of the humanoid robot, Mybot, developed in the Robot Intelligence Technology Laboratory at KAIST...
June 26, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28650822/calculating-the-expected-time-to-eradicate-hiv-1-using-a-markov-chain
#13
Narayanan Viswanath
In this study, the expected time required to eradicate HIV-1 completely was found as the conditional absorbing time in a finite state space continuous-time Markov chain model. The Markov chain has two absorbing states: one corresponds to HIV eradication and another representing the possible disaster. This method allowed us to calculate the expected eradication time by solving systems of linear equations. To overcome the challenge of huge dimension of the problem, we applied a novel stop and resume technique...
October 20, 2016: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28650820/terahertz-channel-model-and-link-budget-analysis-for-intrabody-nanoscale-communication
#14
Hadeel Elayan, Raed M Shubair, Josep M Jornet, Pedram Johari
Nanosized devices operating inside the human body open up new prospects in the healthcare domain. In vivo wireless nanosensor networks (iWNSNs) will result in a plethora of applications ranging from intrabody health-monitoring to drug- delivery systems. With the development of miniature plasmonic signal sources, antennas and detectors, wireless communications among intrabody nanodevices will expectedly be enabled at both the Terahertz Band (0.1-10 THz) as well as optical frequencies (400-750 THz). This result motivates the analysis of the phenomena affecting the propagation of electromagnetic signals inside the human body...
June 22, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28650805/an-in-vitro-and-numerical-study-of-moxibustion-therapy-on-biological-tissue
#15
Ying Li, Chao Sun, Jiujie Kuang, Changchun Ji, Shangsheng Feng, Jiangtao Wu, Haojun You
OBJECTIVE: Moxibustion therapy achieves satisfactory therapeutic effects largely depending on the heat stimulation of burning moxa. Understanding the thermal characteristics of heating process is an effective way to reveal the underlying mechanisms of moxibustion therapy. METHODS: This paper performs experimental study on temperature distributions of burning moxa sticks and fresh in-vitro porcine abdominal tissue using an infrared camera and thermocouples. Meanwhile, a moxibustion model incorporating moxa stick burning model and tissue heat transfer model was established with consideration of radiation propagation and water evaporation...
June 26, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28650803/challenges-in-improving-cochlear-implant-performance-and-accessibility
#16
Fan-Gang Zeng
Here I identify two gaps in cochlear implants that have been limiting their performance and acceptance. First, cochlear implant performance has remained largely unchanged, despite the number of publications tripling per decade in the last 30 years. Little has been done so far to address a fundamental limitation in the electrode-to-neuron interface, with the electrode size being a thousand times larger than the neuron diameter while the number of electrodes being a thousand times less. Both the small number and the large size of electrodes produce broad spatial activation and poor pitch resolution that limit current cochlear implant performance...
June 22, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28650727/models-for-nearly-every-occasion-part-iv-two-box-decreasing-emission-models
#17
Gary H Ganser, Paul Hewett
New two box "well-mixed room" decreasing emission (DE) models are introduced for scenarios that involve local controls, such as some form of local exhaust or local exhaust with filtered return. In addition, these models allow for the recirculation of a filtered (or cleaned) portion of the general room ventilation. For each control device scenario, a steady state and transient near and far field model is presented. The transient equations predict the concentration at time t after the application of the substance...
June 26, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28650714/models-for-nearly-every-occasion-part-iii-one-box-decreasing-emission-models
#18
Paul Hewett, Gary H Ganser
New one box "well-mixed room" decreasing emission (DE) models are introduced that allow for local exhaust or local exhaust with filtered return, as well the recirculation of a filtered (or cleaned) portion of the general room ventilation. For each control device scenario, a steady state and transient model is presented. The transient equations predict the concentration at any time t after the application of a known mass of a volatile substance to a surface, and can be used to predict the task exposure profile, the average task exposure, as well as peak and short-term exposures...
June 26, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28650704/is-there-a-reason-for-concern-or-is-it-just-hype-a-systematic-literature-review-of-the-clinical-consequences-of-switching-from-originator-biologics-to-biosimilars
#19
András Inotai, Christiaan P J Prins, Marcell Csanádi, Dinko Vitezic, Catalin Codreanu, Zoltán Kaló
While prescribing biosimilars to patients naive to a biologic treatment is a well-accepted practice, switching clinically stable patients from an originator to a biosimilar is an issue for clinicians. Well-designed clinical trials and real-world data which study the consequences of switching from an originator biologic treatment to its biosimilar alternative are limited, especially for monoclonal antibodies. Areas covered: A systematic literature review was conducted on PubMed to identify evidence of the consequences of switching from original biologics to biosimilars...
June 26, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28650679/establishing-maximal-medical-improvement-after-arthroscopic-rotator-cuff-repair
#20
William A Zuke, Timothy S Leroux, Bonnie P Gregory, Austin Black, Brian Forsythe, Anthony A Romeo, Nikhil N Verma
BACKGROUND: As health care transitions from a pay-for-service to a pay-for-performance infrastructure, the value of orthopaedic care must be defined accurately. Significant efforts have been made in defining quality and cost in arthroplasty; however, there remains a lag in ambulatory orthopaedic care. PURPOSE: Two-year follow-up has been a general requirement for reporting outcomes after rotator cuff repair. However, this time requirement has not been established scientifically and is of increasing importance in the era of value-based health care...
June 1, 2017: American Journal of Sports Medicine
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