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https://www.readbyqxmd.com/read/29335182/microstructures-and-performances-of-pegylated-polysulfone-membranes-from-an-in-situ-synthesized-solution-via-vapor-induced-phase-separation-approach
#1
Li-Jing Zhu, Hai-Ming Song, Gang Wang, Zhi-Xiang Zeng, Cun-Ting Zhao, Qun-Ji Xue, Xiao-Ping Guo
In situ pegylated (PEGylated) microporous membranes have been extensively reported using poly(ethylene glycol) (PEG)-based polymers as blending additives. Alternatively, free standing PEGylated polysulfone (PSf) membranes with excellent hydrophilicity and antifouling ability were directly fabricated from polysulfone/poly(ethylene glycol) methyl ether methacrylate (PSf/PEGMA) solutions after in situ cross-linking polymerization without any treatment via vapor induced phase separation (VIPS) process for the first time...
January 9, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29325158/influence-of-light-sources-and-photoperiod-on-growth-performance-carcass-characteristics-and-health-indices-of-broilers-grown-to-heavy-weights2
#2
H A Olanrewaju, W W Miller, W R Maslin, S D Collier, J L Purswell, S L Branton
Effects of light sources and photoperiod on growth performance, carcass characteristics and health indices of broilers were investigated in 4 trials. In each trial, 720 1-day-old Ross × Ross 708 chicks were randomly distributed into 12 environmentally controlled rooms (30 males/30 females/room). The experimental design was a 4 × 3 factorial treatments consisted of 4 light sources [incandescent (ICD, standard), compact fluorescent (CFL), neutral light-emitting diode (Neutral-LED), and cool poultry-specific filtered LED (Cool-PSF-LED)] and 3 photoperiods [long/continuous (23L:1D), regular/intermittent (2L:2D), and short/non-intermittent (8L:16D)] from d8-d56...
January 6, 2018: Poultry Science
https://www.readbyqxmd.com/read/29324678/immobilization-of-enzymes-on-a-phospholipid-bionically-modified-polysulfone-gradient-pore-membrane-for-the-enhanced-performance-of-enzymatic-membrane-bioreactors
#3
Yizong Guo, Xueyan Zhu, Fei Fang, Xiao Hong, Huimin Wu, Dajing Chen, Xiaojun Huang
Enzymatic membrane bioreactors (EMBRs), with synergistic catalysis-separation performance, have increasingly been used for practical applications. Generally, the membrane properties, particularly the pore structures and interface interactions, have a significant impact on the catalytic efficiency of the EMBR. Therefore, a biomimetic interface based on a phospholipid assembled onto a polysulfone hollow-fiber membrane with perfect radial gradient pores (RGM-PSF) has been prepared in this work to construct a highly efficient and stable EMBR...
January 11, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29319573/identifying-sources-of-funding-that-contribute-to-scholastic-productivity-in-academic-plastic-surgeons
#4
Qing Zhao Ruan, Justin B Cohen, Yoonji Baek, Austin D Chen, Andres F Doval, Dhruv Singhal, Eugene Y Fukudome, Samuel J Lin, Bernard T Lee
BACKGROUND: Scholastic productivity has previously been shown to be positively associated with National Institute of Health (NIH) grants and industry funding. This study examines whether society, industry, or federal funding contributes toward academic productivity as measured by scholastic output of academic plastic surgeons. METHODS: Institution Web sites were used to acquire academic attributes of full-time academic plastic surgeons. The Center for Medicare and Medicaid Services Open Payment database, NIH reporter, the Plastic Surgery Foundation (PSF), and American Association of Plastic Surgeons (AAPS) Web sites were accessed for funding and endowment details...
January 9, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29318090/c1-2-fixation-approach-for-patients-with-vascular-irregularities-a-case-report
#5
Alireza K Nazemi, Stetson R Bickley, Caleb J Behrend, Jonathan J Carmouche
In posterior spinal fusion (PSF), the vertebral artery is most vulnerable to injury at C1-2. C2 pedicle screws are often placed into the dorsomedial isthmus of C2. Alternative techniques include C2 laminar screws and wiring techniques. A 67-year-old male underwent PSF for persistent severe intractable neck pain and degeneration at C1-2. The patient had an enlarged left vertebral artery with midline migration into the C2 body. This pattern was within one standard deviation of normal; however, it rendered typical placement of a C2 pedicle screw unsafe...
December 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/29317629/3d-single-molecule-super-resolution-microscopy-with-a-tilted-light-sheet
#6
Anna-Karin Gustavsson, Petar N Petrov, Maurice Y Lee, Yoav Shechtman, W E Moerner
Tilted light sheet microscopy with 3D point spread functions (TILT3D) combines a novel, tilted light sheet illumination strategy with long axial range point spread functions (PSFs) for low-background, 3D super-localization of single molecules as well as 3D super-resolution imaging in thick cells. Because the axial positions of the single emitters are encoded in the shape of each single-molecule image rather than in the position or thickness of the light sheet, the light sheet need not be extremely thin. TILT3D is built upon a standard inverted microscope and has minimal custom parts...
January 9, 2018: Nature Communications
https://www.readbyqxmd.com/read/29315441/ray-tracing-analysis-of-the-corneal-power-from-scheimpflug-data
#7
Thomas Olsen, Peter Jeppesen
PURPOSE: To describe a method by which mapped corneal elevation data can be used for ray-tracing analysis of the effective corneal power. METHODS: Mapped elevation data of the front and back surface of the cornea exported by a clinical Scheimpflug camera was triangulated into a polygonal format and imported into a commercial optical engineering software. The focal length of the cornea was determined by exact ray tracing analysis of the distance giving the sharpest point spread function (PSF) at the selected image plane...
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29303359/bayesian-penalised-likelihood-reconstruction-q-clear-of-18f-fluciclovine-pet-for-imaging-of-recurrent-prostate-cancer-semi-quantitative-and-clinical-evaluation
#8
Eugene J Teoh, Daniel R McGowan, David M Schuster, Maria Tsakok, Fergus V Gleeson, Kevin M Bradley
OBJECTIVE: 18F-Fluciclovine (FACBC) is an amino acid PET radiotracer approved for recurrent prostate cancer imaging. We investigate the use of Bayesian penalised likelihood (BPL) reconstruction for 18F-fluciclovine PET. METHODS: Fifteen 18F-fluciclovine scans were reconstructed using OSEM, OSEM+point spread function modeling (PSF) and BPL using β values 100-600. Lesion SUVmax, organ SUVmean and standard deviation were measured. De-identified reconstructions (OSEM, PSF, BPL using β200-600) from 10 cases were visually analysed by two readers who indicated their most and least preferred reconstructions, and scored overall image quality (IQ), noise level, background marrow IQ and lesion conspicuity...
January 5, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29299853/distortion-correction-of-echo-planar-images-applying-the-concept-of-finite-rate-of-innovation-to-point-spread-function-mapping-frip
#9
Rita G Nunes, Joseph V Hajnal
OBJECTIVE: Point spread function (PSF) mapping enables estimating the displacement fields required for distortion correction of echo planar images. Recently, a highly accelerated approach was introduced for estimating displacements from the phase slope of under-sampled PSF mapping data. Sampling schemes with varying spacing were proposed requiring stepwise phase unwrapping. To avoid unwrapping errors, an alternative approach applying the concept of finite rate of innovation to PSF mapping (FRIP) is introduced, using a pattern search strategy to locate the PSF peak, and the two methods are compared...
January 3, 2018: Magma
https://www.readbyqxmd.com/read/29296483/single-shot-three-dimensional-fluorescence-microscopy-with-a-spatially-rotating-point-spread-function
#10
Zhaojun Wang, Yanan Cai, Yansheng Liang, Xing Zhou, Shaohui Yan, Dan Dan, Piero R Bianco, Ming Lei, Baoli Yao
A wide-field fluorescence microscope with a double-helix point spread function (PSF) is constructed to obtain the specimen's three-dimensional distribution with a single snapshot. Spiral-phase-based computer-generated holograms (CGHs) are adopted to make the depth-of-field of the microscope adjustable. The impact of system aberrations on the double-helix PSF at high numerical aperture is analyzed to reveal the necessity of the aberration correction. A modified cepstrum-based reconstruction scheme is promoted in accordance with properties of the new double-helix PSF...
December 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29250564/measuring-arterial-wall-perfusion-using-photon-counting-computed-tomography-ct-improving-ct-number-accuracy-of-artery-wall-using-image-deconvolution
#11
Kishore Rajendran, Shuai Leng, Steven M Jorgensen, Jill L Anderson, Ahmed F Halaweish, Dilbar Abdurakhimova, Erik L Ritman, Cynthia H McCollough
Changes in arterial wall perfusion mark the onset of atherosclerosis. A characteristic change is the increased spatial density of vasa vasorum (VV), the microvessels in the arterial walls. Measuring this increased VV (IVV) density using contrast-enhanced computed tomography (CT) has had limited success due to blooming effects from contrast media. If the system point-spread function (PSF) is known, then the blooming effect can be modeled as a convolution between the true signal and the PSF. We report the application of image deconvolution to improve the CT number accuracy in the arterial wall of a phantom and in a porcine model of IVV density, both scanned using a whole-body research photon-counting CT scanner...
October 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29242403/does-pet-reconstruction-method-affect-deauville-scoring-in-lymphoma-patients
#12
Blandine Enilorac, Charline Lasnon, Cathy Nganoa, Christophe Fruchart, Anne Claire Gac, Gandhi Damaj, Nicolas Aide
Background: When scoring 18F-Fluorodeoxyglucose (FDG) positron emission tomography (PET) with the Deauville scale (DS), the quantification of tumor and reference organs limits the problem of optical misinterpretation. Compared to conventional reconstruction algorithms, point spread function (PSF) modeling significantly increases standardized uptake values (SUVs) in tumors but only moderately in the liver, which could affect the DS. We investigated whether the choice of the reconstruction algorithm affects the DS and whether discordances affect the capability of FDG PET to stratify lymphoma patients...
December 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29241940/plant-soil-feedback-bridging-natural-and-agricultural-sciences
#13
REVIEW
Pierre Mariotte, Zia Mehrabi, T Martijn Bezemer, Gerlinde B De Deyn, Andrew Kulmatiski, Barbara Drigo, G F Ciska Veen, Marcel G A van der Heijden, Paul Kardol
In agricultural and natural systems researchers have demonstrated large effects of plant-soil feedback (PSF) on plant growth. However, the concepts and approaches used in these two types of systems have developed, for the most part, independently. Here, we present a conceptual framework that integrates knowledge and approaches from these two contrasting systems. We use this integrated framework to demonstrate (i) how knowledge from complex natural systems can be used to increase agricultural resource-use efficiency and productivity and (ii) how research in agricultural systems can be used to test hypotheses and approaches developed in natural systems...
December 11, 2017: Trends in Ecology & Evolution
https://www.readbyqxmd.com/read/29239524/performance-measures-for-a-dialysis-setting
#14
Xiuzhu Gu, Kenji Itoh
OBJECTIVES: This study from Japan extracted performance measures for dialysis unit management and investigated their characteristics from professional views. METHODS: Two surveys were conducted using self-administered questionnaires, in which dialysis managers/staff were asked to rate the usefulness of 44 performance indicators. A total of 255 managers and 2,097 staff responded. RESULTS: Eight performance measures were elicited from dialysis manager and staff responses: these were safety, operational efficiency, quality of working life, financial effectiveness, employee development, mortality, patient/employee satisfaction and patient-centred health care...
December 14, 2017: Journal of Renal Care
https://www.readbyqxmd.com/read/29227260/factors-associated-with-post-stroke-fatigue-during-the-second-half-year-after-stroke
#15
M Delva, N Lytvynenko, I Delva
Post-stroke fatigue (PSF) is a common and often debilitating sequel of both ischemic and hemorrhagic strokes Aim - identify socio-demographic, personal and psychological factors associated with different PSF domains over the second half year after stroke occurrence. There were examined patients consequently in definite time points: at 6 months (156 patients), at 9 months (139 patients) and at 12 months (128 patients) after ischemic or hemorrhagic strokes. Global PSF and certain PSF domains (physical, mental, motivational, activity-related) were measured by multidimensional fatigue inventory-20 scale...
November 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29225890/can-peer-support-be-cost-saving-an-economic-evaluation-of-rapsid-a-randomized-controlled-trial-of-peer-support-in-diabetes-compared-to-usual-care-alone-in-east-of-england-communities
#16
La'Marcus Wingate, Jonathan Graffy, Daniel Holman, David Simmons
Background: Diabetes peer support, where one person with diabetes helps others, may improve diabetes management. The objective of this study was to perform a cost analysis of peer support strategies used in RAndomized controlled trial of Peer Support in type 2 Diabetes. Methods: We performed a 2×2 factorial randomized cluster controlled trial in England. People with type 2 diabetes were invited to participate as either 'peer' or 'peer support facilitator' (PSF) through postal invitation predominantly from general practice...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/29218483/asymmetrical-trunk-movement-during-walking-improved-to-normal-range-at-3%C3%A2-months-after-corrective-posterior-spinal-fusion-in-adolescent-idiopathic-scoliosis
#17
Daniel A C F Wong-Chung, Janneke J P Schimmel, Marinus de Kleuver, Noël L W Keijsers
PURPOSE: To investigate the effects of posterior spinal fusion (PSF) and curve type on upper body movements in Adolescent Idiopathic Scoliosis (AIS) patients during gait. METHODS: Twenty-four girls (12-18 years) with AIS underwent PSF. 3D-Gait-analyses were performed preoperatively, at 3 months and 1 year postoperatively. Mean position (0° represents symmetry) and range of motion (ROM) of the trunk (thorax-relative-to-pelvis) in all planes were assessed. Lower body kinematics and spatiotemporal parameters were also evaluated...
December 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29215493/minimally-invasive-lateral-lumbar-interbody-fusion-for-adult-spinal-deformity-clinical-and-radiological-efficacy-with-minimum-two-years-follow-up
#18
Hyung-Youl Park, Kee-Yong Ha, Young-Hoon Kim, Dong-Gune Chang, Sang-Il Kim, Jae-Won Lee, Joo-Hyun Ahn, Jong-Bin Kim
STUDY DESIGN: A retrospective cohort study OBJECTIVE.: To evaluate the clinical and radiological efficacies of supplementing minimally invasive lateral lumbar interbody fusion (LLIF) with open posterior spinal fusion (PSF) in adult spinal deformity (ASD). SUMMARY OF BACKGROUND DATA: Minimally invasive techniques have been increasingly applied for surgery of ASD. Few reports have been published that directly compare LLIF combined with PSF to conventional PSF for ASD...
December 5, 2017: Spine
https://www.readbyqxmd.com/read/29214471/duration-of-the-conditioning-phase-affects-the-results-of-plant-soil-feedback-experiments-via-soil-chemical-properties
#19
Clémentine Lepinay, Zuzana Vondráková, Tomáš Dostálek, Zuzana Münzbergová
Plant-soil feedback (PSF) is a fundamental mechanism explaining plant community composition. Two-phase experiments, i.e., conditioning and feedback, represent a common methodology to study PSF. The duration of the conditioning phase varies among studies and the PSF observed is often explained by its biotic component. Little is known about the temporal variation of PSF and its abiotic component. As early life stages are crucial for plant establishment, we grew Rorippa austriaca in soil conditioned over 2, 4, 6 or 8 weeks by a conspecific or a co-occurring species, Agrostis capillaris...
December 6, 2017: Oecologia
https://www.readbyqxmd.com/read/29212731/clinical-activity-of-pazopanib-in-patients-with-advanced-desmoplastic-small-round-cell-tumor
#20
Brian A Menegaz, Branko Cuglievan, Jalen Benson, Pamela Camacho, Salah-Eddine Lamhamedi-Cherradi, Cheuk Hong Leung, Carla L Warneke, Winston Huh, Vivek Subbiah, Robert S Benjamin, Shreyaskumar Patel, Najat Daw, Andrea Hayes-Jordan, Joseph A Ludwig
BACKGROUND: Desmoplastic small round cell tumor (DSRCT) is an aggressive, often fatal soft tissue sarcoma that lacks an optimal salvage regimen. We retrospectively reviewed data from 29 pretreated DSRCT patients who received pazopanib at MD Anderson Cancer Center after failure of standard chemotherapies. SUBJECTS, MATERIALS, AND METHODS: Medical records of patients treated from January 2012 to December 2016 were reviewed and regression analyses were performed. Median progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan-Meier method and differences in survival were assessed by a log-rank test...
December 6, 2017: Oncologist
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