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https://www.readbyqxmd.com/read/29786774/computational-fluid-dynamics-modeling-of-the-human-pulmonary-arteries-with-experimental-validation
#1
Alifer D Bordones, Matthew Leroux, Vitaly O Kheyfets, Yu-An Wu, Chia-Yuan Chen, Ender A Finol
Pulmonary hypertension (PH) is a chronic progressive disease characterized by elevated pulmonary arterial pressure, caused by an increase in pulmonary arterial impedance. Computational fluid dynamics (CFD) can be used to identify metrics representative of the stage of PH disease. However, experimental validation of CFD models is often not pursued due to the geometric complexity of the model or uncertainties in the reproduction of the required flow conditions. The goal of this work is to validate experimentally a CFD model of a pulmonary artery phantom using a particle image velocimetry (PIV) technique...
May 21, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29786761/engineering-terpenoid-production-through-transient-expression-in-nicotiana-benthamiana
#2
REVIEW
James Reed, Anne Osbourn
Terpenoids are the most structurally diverse class of plant natural products with a huge range of commercial and medical applications. Exploiting this enormous potential has historically been hindered due to low levels of these compounds in their natural sources, making isolation difficult, while their structural complexity frequently makes synthetic chemistry approaches uneconomical. Engineering terpenoid biosynthesis in heterologous host production platforms provides a means to overcome these obstacles. In particular, plant-based production systems are attractive as they provide the compartmentalisation and cofactors necessary for the transfer of functional pathways from other plants...
May 21, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29786739/synthesis-of-pure-silica-mfi-zeolites-using-imidazolium-based-long-dications-a-comparative-study-of-structure-directing-effects-derived-from-a-further-spacer-length-increase
#3
Peng Lu, Luis Gómez-Hortigüela, Miguel A Camblor
Length-dependent structure direction of linear methylimidazolium-based dications towards MFI zeolite, previously known only for the tetramethylene spacer, has also been found for octamethylene and decamethylene spacers. This works only under highly concentrated conditions, whereas dilution always tends to favor TON, a default structure that is the only zeolite obtained with the other reported dications (with tri-, penta-, and hexamethylene spacers). The locations and conformations of the dications have been studied by molecular mechanics simulations...
May 22, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29786699/the-draft-genome-sequence-of-cork-oak
#4
António Marcos Ramos, Ana Usié, Pedro Barbosa, Pedro M Barros, Tiago Capote, Inês Chaves, Fernanda Simões, Isabl Abreu, Isabel Carrasquinho, Carlos Faro, Joana B Guimarães, Diogo Mendonça, Filomena Nóbrega, Leandra Rodrigues, Nelson J M Saibo, Maria Carolina Varela, Conceição Egas, José Matos, Célia M Miguel, M Margarida Oliveira, Cândido P Ricardo, Sónia Gonçalves
Cork oak (Quercus suber) is native to southwest Europe and northwest Africa where it plays a crucial environmental and economical role. To tackle the cork oak production and industrial challenges, advanced research is imperative but dependent on the availability of a sequenced genome. To address this, we produced the first draft version of the cork oak genome. We followed a de novo assembly strategy based on high-throughput sequence data, which generated a draft genome comprising 23,347 scaffolds and 953.3 Mb in size...
May 22, 2018: Scientific Data
https://www.readbyqxmd.com/read/29786534/-the-gynecological-pessary-is-it-really-a-device-of-another-age-a-fig-leaf
#5
E Nohuz, E Jouve, G Clement, B Jacquetin
OBJECTIVES: The use of pessary to put back up prolapsed organs to their normal position dates back prior to several millennia. This work aims to discuss its place in our clinical practice through an updated bibliographic review and emphasizes a hands-on approach to pessary fitting and management in terms of indication, pessary type selection, device' size, insertion, removal, follow-up visits and care. METHODS: A review of the literature, in the light of the latest publications and recommendations of French and international learned societies, as well as our own experience, were analyzed...
May 18, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29786526/application-of-multiple-behaviour-change-models-to-identify-determinants-of-farmers-biosecurity-attitudes-and-behaviours
#6
I F Richens, J Houdmont, W Wapenaar, O Shortall, J Kaler, H O'Connor, M L Brennan
It has been recognised that few cattle farmers undertake biosecurity practices on their farms. Approaches that take into consideration individuals' preparedness for change, alongside beliefs thought to motivate the enactment of certain behaviours, may provide a framework for actuating tangible change. The aim of this study was to use a combination of behaviour change models to link beliefs with behaviour and identify possible key interventions to improve the uptake of biosecurity measures by dairy cattle farmers in Great Britain (GB)...
July 1, 2018: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29786495/occupational-moral-injury-and-mental-health-systematic-review-and-meta-analysis
#7
Victoria Williamson, Sharon A M Stevelink, Neil Greenberg
BACKGROUND: Many people confront potentially morally injurious experiences (PMIEs) in the course of their work which can violate deeply held moral values or beliefs, putting them at risk for psychological difficulties (e.g. post-traumatic stress disorder (PTSD), depression, etc.).AimsWe aimed to assess the effect of moral injury on mental health outcomes. METHOD: We conducted a systematic review and meta-analysis to assess the association between work-related PMIEs and mental health disorders...
June 2018: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/29786456/what-everybody-should-know-about-postural-changes
#8
Benoit Dugué, Giovanni Lombardi, Giuseppe Banfi
Posture changes have been known for a long time to influence the concentration of many analytes in blood especially macromolecules. It is very clear that when someone switches from supine to sitting or standing or from sitting to standing a hemoconcentration is induced. Similarly, when someone switches from standing to sitting or lying a hemodilution occurs. In the context of clinical chemistry, rules have been issued to buffer the impact of postural changes close to the blood specimen collection (e.g. 15 min of seated rest before the blood puncture)...
May 22, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29786441/x-ray-photoelectron-spectroscopy-studies-of-nanoparticles-dispersed-in-static-liquid
#9
Luan Nguyen, Paul Pengcheng Tao, Huimin Liu, Mohamed Al-Hada, Matteo Amati, Hikmet Sezen, Luca Gregoratti, Yu Tang, Stephen D House, Franklin Feng Tao
For nanoparticles active for chemical and energy transformations in liquid environment, chemistries of surface or near-surface regions of these catalyst nanoparticles in liquid are crucial for fundamentally understanding their catalytic performances at a molecular level. Compared to catalysis at a solid-gas interface, there is very limited information on surface of these catalyst nanoparticles under working condition or during catalysis. Photoelectron spectroscopy is a surface-sensitive technique; however, it is challenging to study the surfaces of catalyst nanoparticles dispersed in liquid due to the short inelastic mean free path of photoelectrons travelling in liquid...
May 22, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29786089/spectral-analysis-of-fundus-autofluorescence-pattern-as-a-tool-to-detect-early-stages-of-degeneration-in-the-retina-and-retinal-pigment-epithelium
#10
Tatiana B Feldman, Marina A Yakovleva, Andrey V Larichev, Patimat M Arbukhanova, Alexandra Sh Radchenko, Sergey A Borzenok, Vladimir A Kuzmin, Mikhail A Ostrovsky
PURPOSE: The aim of this work is the determination of quantitative diagnostic criteria based on the spectral characteristics of fundus autofluorescence to detect early stages of degeneration in the retina and retinal pigment epithelium (RPE). METHODS: RPE cell suspension samples were obtained from the cadaver eyes with and without signs of age-related macular degeneration (AMD). Fluorescence analysis at an excitation wavelength of 488 nm was performed. The fluorescence lifetimes of lipofuscin-granule fluorophores were measured by counting time-correlated photon method...
May 22, 2018: Eye
https://www.readbyqxmd.com/read/29785893/evaluating-vaccination-strategies-to-control-foot-and-mouth-disease-a-country-comparison-study
#11
T G Rawdon, M G Garner, R L Sanson, M A Stevenson, C Cook, C Birch, S E Roche, K A Patyk, K N Forde-Folle, C Dubé, T Smylie, Z D Yu
Vaccination is increasingly being recognised as a potential tool to supplement 'stamping out' for controlling foot-and-mouth disease (FMD) outbreaks in non-endemic countries. Infectious disease simulation models provide the opportunity to determine how vaccination might be used in the face of an FMD outbreak. Previously, consistent relative benefits of specific vaccination strategies across different FMD simulation modelling platforms have been demonstrated, using a UK FMD outbreak scenario. We extended this work to assess the relative effectiveness of selected vaccination strategies in five countries: Australia, New Zealand, the USA, the UK and Canada...
May 22, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29785853/engineering-of-porphyrin-molecules-for-use-as-effective-cathode-interfacial-modifiers-in-organic-solar-cells-of-enhanced-efficiency-and-stability
#12
Marinos Tountas, Apostolis Verykios, Ermioni Polydorou, Andreas Kaltzoglou, Anastasia Soultati, Nikolaos Balis, Panagiotis A Angaridis, Michael Papadakis, Vasilis Nikolaou, Florian Auras, Leonidas C Palilis, Dimitris Tsikritzis, Evangelos Evangelou, Spyros Gardelis, Matroni Koutsoureli, George Papaioannou, Ioannis D Petsalakis, Stella Kennou, Dimitris Davazoglou, Panagiotis Argitis, Polycarpos Falaras, Athanassios G Coutsolelos, Maria Vasilopoulou
In the present work, we effectively modify the TiO2 electron transport layer of organic solar cells with an inverted architecture by using appropriately engineered porphyrin molecules. The results show that the optimized porphyrin modifier bearing two carboxylic acids as the anchoring groups and a triazine electron-withdrawing spacer significantly reduces the work function of TiO2 thereby reducing the electron extraction barrier. Moreover, the lower surface energy of the porphyrin-modified substrate results in better physical compatibility between the latter and the photoactive blend...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29785839/optimization-of-a-secondary-voi-protocol-for-lung-imaging-in-a-clinical-ct-scanner
#13
Thomas C Larsen, Vissagan Gopalakrishnan, Jianhua Yao, Catherine P Nguyen, Marcus Y Chen, Joel Moss, Han Wen
We present a solution to meet an unmet clinical need of an in-situ "close look" at a pulmonary nodule or at the margins of a pulmonary cyst revealed by a primary (screening) chest CT while the patient is still in the scanner. We first evaluated options available on current whole-body CT scanners for high resolution screening scans, including ROI reconstruction of the primary scan data and HRCT, but found them to have insufficient SNR in lung tissue or discontinuous slice coverage. Within the capabilities of current clinical CT systems, we opted for the solution of a secondary, volume-of-interest (VOI) protocol where the radiation dose is focused into a short-beam axial scan at the z position of interest, combined with a small-FOV reconstruction at the xy position of interest...
May 21, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29785687/education-is-associated-with-the-magnitude-of-cortisol-responses-to-psychosocial-stress-in-college-students
#14
Andrew W Manigault, Alex Woody, Peggy M Zoccola, Sally S Dickerson
PURPOSE: Researchers benefit from controlling for individual differences that systematically account for variance in acute cortisol responses (e.g., sex). Similarly, some suggest that education could be used as a cortisol covariate because prior work found a negative relationship between education and the magnitude of acute cortisol responses in middle-aged adults. Nevertheless, education is seldom controlled for in tests of cortisol responses to acute stress, in part because the effect of education on acute cortisol responses has yet to be tested in a college sample...
May 21, 2018: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/29785625/exploring-the-association-between-electronic-health-record-use-and-burnout-among-psychiatry-residents-and-faculty-a-pilot-survey-study
#15
Nicholas M Domaney, John Torous, William E Greenberg
OBJECTIVE: Burnout is a phenomenon with profound negative effects on the US healthcare system. Little is known about the relationship between time spent working on electronic health record (EHR) and burnout among psychiatry residents. The purpose of this study is to generate preliminary data on EHR use and burnout among psychiatry residents and faculty. METHODS: In August 2017, psychiatry residents and faculty at an academic medical center were given the Maslach Burnout Inventory (MBI), a standardized measurement tool for burnout, and a survey of factors related to EHR use and potential risk factors for burnout...
May 21, 2018: Academic Psychiatry
https://www.readbyqxmd.com/read/29785609/evaluation-of-focei-and-saem-estimation-methods-in-population-pharmacokinetic-analysis-using-nonmem-%C3%A2-across-rich-medium-and-sparse-sampling-data
#16
Waroonrat Sukarnjanaset, Thitima Wattanavijitkul, Sutep Jarurattanasirikul
BACKGROUND AND OBJECTIVES: First-order conditional estimation with interaction (FOCEI) is one of the most commonly used estimation methods in nonlinear mixed effects modeling, while the stochastic approximation expectation maximization (SAEM) is the newer estimation algorithm. This work aimed to compare the performance of FOCEI and SAEM methods when using NONMEM® with the classical one- and two-compartment models across rich, medium, and sparse data. METHODS: One- and two-compartment models of the previous studies were used to simulate data in three scenarios: rich, medium, and sparse data...
May 21, 2018: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/29785608/reuse-of-organobentonites-with-a-carbon-dioxide-responsive-solvent
#17
Ling-Yu Luan, Li Zhang, Li-Hong Wang
Synthesized organobentonite (SOB), montmorillonite (MMT), and commercial organobentonite (COB) were used as adsorbents for paraffin oil, a model pollutant in land-based oil spills and oil pipeline rupture. The characterization of clays was carried out with scanning electron microscopy (SEM), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). After adsorption, oil was separated from adsorbents with a carbon dioxide responsive solvent N,N-dimethylcyclohexylamine (DMCHA), and DMCHA was subsequently separated from paraffin oil upon CO2 bubbling instead of distillation with high energy cost...
May 22, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29785582/altered-cerebro-cerebellum-resting-state-functional-connectivity-in-hiv-infected-male-patients
#18
Huijuan Wang, Ruili Li, Yawen Zhou, Yanming Wang, Jin Cui, Benedictor Alexander Nguchu, Bensheng Qiu, Xiaoxiao Wang, Hongjun Li
In addition to the role of planning and executing movement, the cerebellum greatly contributes to cognitive process. Numerous studies have reported structural and functional abnormalities in the cerebellum for HIV-infected patients, but little is known about the altered functional connectivity of particular cerebellar subregions and the cerebrum. Therefore, this study aimed to explore the resting-state functional connectivity (rsFC) changes of the cerebellum and further analyze the relationship between the rsFC changes and the neuropsychological evaluation...
May 21, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/29785493/mindset-and-communication-barriers-in-the-diffusion-of-bariatric-surgery
#19
REVIEW
Daniel Gero, Bors Hulesch, Marco Bueter
PURPOSE OF REVIEW: Cumulating evidence is available to demonstrate the efficacy of bariatric surgery (BS) in achieving weight loss and optimizing comorbidities. However, currently, only a minority of eligible patients approaches bariatric centers. The underuse of BS can no longer be explained by the lack of evidence supporting its beneficial outcomes along with its favorable safety-profile, rather, by the supporting infrastructure, insurance coverage, and mindset of society, including potential patients and allied healthcare professionals...
May 21, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29785467/impact-of-a-safe-resident-handling-program-in-nursing-homes-on-return-to-work-and-re-injury-outcomes-following-work-injury
#20
Alicia Kurowski, Glenn Pransky, Laura Punnett
Purpose This study examined the impact of a Safe Resident Handling Program (SRHP) on length of disability and re-injury, following work-related injuries of nursing home workers. Resident handling-related injuries and back injuries were of particular interest. Methods A large national nursing home corporation introduced a SRHP followed by three years of training for 136 centers. Lost-time workers' compensation claims (3 years pre-SRHP and 6 years post-SRHP) were evaluated. For each claim, length of first episode of disability and recurrence of disabling injury were evaluated over time...
May 21, 2018: Journal of Occupational Rehabilitation
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