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https://www.readbyqxmd.com/read/29351626/neuroendovascular-fellowship-training-self-assessment-of-a-program-accredited-by-the-committee-on-advanced-subspecialty-training
#1
Hakeem J Shakir, Hussain Shallwani, Leonardo Rangel-Castilla, Amade Bregy, Jason M Davies, Ashish Sonig, Christopher S Ogilvy, Kenneth V Snyder, L Nelson Hopkins, Adnan H Siddiqui, Elad I Levy
The University at Buffalo's neuroendovascular fellowship is one of the longest running fellowship programs in North America. The burgeoning neurointerventional workforce and the rapid growth in the neurointerventional space on the heels of groundbreaking clinical trials prompted us to assess the fellowship's academic impact and its graduates' perceptions and productivity. An anonymized web-based survey was sent to all former neuroendovascular fellows with specific questions pertaining to current practice, research and funding, and perceptions about the fellowship's impact on their skills, competitiveness, and compensation...
January 17, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29351442/measurements-of-pulmonary-gas-exchange-efficiency-using-expired-gas-and-oximetry-results-in-normal-subjects
#2
John B West, Daniel L Wang, Gordon Kim Prisk
We are developing a novel, noninvasive method for measuring the efficiency of pulmonary gas exchange in patients with lung disease. The patient wears an oximeter, and we measure the partial pressures of oxygen and carbon dioxide in inspired and expired gas using miniature analyzers. The arterial PO2 is then calculated from the oximeter reading and the oxygen dissociation curve, using the end-tidal PCO2 to allow for the Bohr effect. This calculation is only accurate when the oxygen saturation is below 94% and therefore these normal subjects breathed 12...
December 20, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351259/dietary-fatty-acids-alter-lipid-profiles-and-induce-myocardial-dysfunction-without-causing-metabolic-disorders-in-mice
#3
Bainian Chen, Yifan Huang, Dong Zheng, Rui Ni, Mark A Bernards
Oversupply of bulk saturated fatty acids (SFA) induces metabolic disorders and myocardial dysfunction. We investigated whether, without causing metabolic disorders, the uptake of individual dietary SFA species alters lipid profiles and induces myocardial dysfunction. C57BL/6 mice were fed various customized long-chain SFA diets (40% caloric intake from SFA), including a beef tallow (HBD), cocoa butter (HCD), milk fat (HMD) and palm oil diet (HPD), for 6 months. An isocaloric fat diet, containing medium-chain triglycerides, served as a control (CHD)...
January 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29351257/modifications-in-the-consumption-of-energy-sugar-and-saturated-fat-among-the-mexican-adult-population-simulation-of-the-effect-when-replacing-processed-foods-that-comply-with-a-front-of-package-labeling-system
#4
Rosario Mendoza, Lizbeth Tolentino-Mayo, Lucia Hernández-Barrera, Claudia Nieto, Eric A Monterrubio-Flores, Simón Barquera
A Mexican Committee of Nutrition Experts (MCNE) from the National Institute of Public Health (INSP), free from conflict of interest, established food content standards to place the front-of-package (FOP) logo on foods that meet these nutrition criteria. The objectives were to simulate the effect on nutrient intake in the Mexican adult population (20-59 years old) after replacing commonly consumed processed foods with those that meet the FOP nutrition-labeling criteria. Twenty-four hour dietary recalls were collected from the 2012 Mexican National Health and Nutrition Survey (n = 2164 adults)...
January 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29350943/single-atom-transistor-as-a-precise-magnetic-field-sensor
#5
Krzysztof Jachymski, Tomasz Wasak, Zbigniew Idziaszek, Paul S Julienne, Antonio Negretti, Tommaso Calarco
Feshbach resonances, which allow for tuning the interactions of ultracold atoms with an external magnetic field, have been widely used to control the properties of quantum gases. We propose a scheme for using scattering resonances as a probe for external fields, showing that by carefully tuning the parameters it is possible to reach a 10^{-5}  G (or nT) level of precision with a single pair of atoms. We show that, for our collisional setup, it is possible to saturate the quantum precision bound with a simple measurement protocol...
January 5, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29350908/light-modulation-and-water-splitting-enhancement-using-composite-porous-gan-structure
#6
Chao Yang, Xin Xi, Zhi-Guo Yu, Haicheng Cao, Jing Li, Shan Lin, Zhanhong Ma, Lixia Zhao
Based on the laterally porous GaN, we designed and fabricated composite GaN porous structures with both well-ordered lateral and vertical holes. Compared to the plane GaN, the composite porous GaN structure with the combination of the vertical holes can help to reduce the UV reflectance, and increase the saturation photocurrent density during the water splitting by a factor of ~4.5. Furthermore, we investigated the underlying mechanism for the enhancement of the water splitting performance using FDTD method...
January 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29350759/extreme-rainfall-affects-assembly-of-the-root-associated-fungal-community
#7
Christopher J Barnes, Christopher J van der Gast, Niall P McNamara, Rebecca Rowe, Gary D Bending
Global warming is resulting in increased frequency of weather extremes. Root-associated fungi play important roles in terrestrial biogeochemical cycling processes, but the way in which they are affected by extreme weather is unclear. Here, we performed long-term field monitoring of the root-associated fungus community of a short rotation coppice willow plantation, and compared community dynamics before and after a once in 100 yr rainfall event that occurred in the UK in 2012. Monitoring of the root-associated fungi was performed over a 3-yr period by metabarcoding the fungal internal transcribed spacer (ITS) region...
January 19, 2018: New Phytologist
https://www.readbyqxmd.com/read/29350649/magnetic-resonance-imaging-in-degenerative-disease-of-the-lumbar-spine-fat-saturation-technique-and-contrast-medium
#8
Paola D'Aprile, Michelangelo Nasuto, Alfredo Tarantino, Giuseppe Guglielmi, J Randy Jinkins
PURPOSE: To examine both anterior and posterior elements of the lumbar spine in patients with low back pain using MRI T2-weighted sequences with Fat Saturation (FS) and contrast enhanced T1-weighted sequences with FS. MATERIALS AND METHODS: Two thousand eight hundred and twenty (2820) patients (1628 male, 1192 female, mean age 54) presenting low back pain underwent MRI standard examination (Sagittal T1w TSE and T2w TSE, axial T1 SE) with the addition of sagittal and axial T2w Fat Sat (FS) sequences...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350626/high-mobility-in-sub-0-75-sub-ga-sub-0-25-sub-as-quantum-wells-in-an-inas-phonon-lattice
#9
Chong Chen, Stuart N Holmes, Ian Farrer, Harvey E Beere, David A Ritchie
InGaAs based devices are great complements to silicon for CMOS, as they provide an increased carrier saturation velocity, lower operating voltage and reduced power dissipation. In this work we show that In0.75Ga0.25As quantum wells with a high mobility, 15 000 to 20 000 cm2/V.s at ambient temperature, show an InAs-like phonon with an energy of 28.8 meV, frequency of 232 cm-1 that dominates the polar-optical mode scattering from ∼ 70 K to 300 K. The optical phonon frequency is insensitive to the carrier density modulated with a surface gate or LED illumination...
January 19, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29350223/what-is-career-success-for-academic-hospitalists-a-qualitative-analysis-of-early-career-faculty-perspectives
#10
Ethan Cumbler, Essey Yirdaw, Patrick Kneeland, Read Pierce, Patrick Rendon, Carrie Herzke, Christine D Jones
BACKGROUND: Understanding the concept of career success is critical for hospital medicine groups seeking to create sustainably rewarding faculty positions. Conceptual models of career success describe both extrinsic (compensation and advancement) and intrinsic (career satisfaction and job satisfaction) domains. How hospitalists define career success for themselves is not well understood. In this study, we qualitatively explore perspectives on how early-career clinician-educators define career success...
January 19, 2018: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/29349952/estimation-of-cerebral-metabolic-rate-of-oxygen-consumption-using-combined-multiwavelength-photoacoustic-microscopy-and-doppler-microultrasound
#11
Yan Jiang, Roger Zemp
The metabolic rate of oxygen consumption is an important metric of tissue oxygen metabolism and is especially critical in the brain, yet few methods are available for measuring it. We use a custom combined photoacoustic-microultrasound system and demonstrate cerebral oxygen consumption estimation in vivo. In particular, the cerebral metabolic rate of oxygen consumption was estimated in a murine model during variation of inhaled oxygen from hypoxia to hyperoxia. The hypothesis of brain autoregulation was confirmed with our method even though oxygen saturation and flow in vessels changed...
January 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29349699/to-evaluate-the-feasibility-of-magnetic-resonance-imaging-in-predicting-unusual-site-ectopic-pregnancy-a-retrospective-cohort-study
#12
Gabriele Masselli, Martina Derme, Maria Grazia Piccioni, Vincenzo Spina, Francesca Laghi, Gianfranco Gualdi, Marialuisa Framarino-Dei-Malatesta
OBJECTIVE: To evaluate the accuracy of pelvic MRI in the diagnosis of unusual ectopic pregnancy (EP), when ultrasound (US) examination is inconclusive. METHODS: We retrospectively reviewed the medical records of 150 patients with suspected EP. Clinical, US and MRI features of 15 unusual EPs were analysed. Two radiologists independently reviewed each case resolving by consensus any diagnostic discrepancy. Interobserver agreement was assessed using the Cohen κ test...
January 18, 2018: European Radiology
https://www.readbyqxmd.com/read/29349441/association-between-sn-2-fatty-acid-profiles-of-breast-milk-and-development-of-the-infant-intestinal-microbiome
#13
Tiemin Jiang, Bin Liu, Jufang Li, Xueyan Dong, Man Lin, Minghui Zhang, Junying Zhao, Yaohua Dai, Lijun Chen
Increasing evidence shows that host diet and gut microbes are related. Previous studies have shown the effects of specific dietary fatty acids (FAs) on intestinal microbiota, but little is known about the effect of the stereospecifically numbered sn-2 position in triglycerides (TG) of human milk on the gut microbiome of infants. This study aimed at examining possible effects of sn-2 FAs of human milk on the gut microbial development of breastfeeding babies. Sn-2 FAs and intestinal microbiota were assessed by GC-MS and high-throughput 16S rRNA sequencing, respectively...
January 19, 2018: Food & Function
https://www.readbyqxmd.com/read/29348720/gintonin-absorption-in-intestinal-model-systems
#14
Byung-Hwan Lee, Sun-Hye Choi, Hyeon-Joong Kim, Sang-Deuk Park, Hyewhon Rhim, Hyoung-Chun Kim, Sung-Hee Hwang, Seung-Yeol Nah
Background: Recently, we identified a novel ginseng-derived lysophosphatidic acid receptor ligand, called gintonin. We showed that gintonin induces [Ca2+]i transient-mediated morphological changes, proliferation, and migration in cells expressing lysophosphatidic acid receptors and that oral administration of gintonin exhibits anti-Alzheimer disease effects in model mice. However, little is known about the intestinal absorption of gintonin. The aim of this study was to investigate gintonin absorption using two model systems...
January 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29348256/flavonoids-dairy-foods-and-cardiovascular-and-metabolic-health-a-review-of-emerging-biologic-pathways
#15
REVIEW
Dariush Mozaffarian, Jason H Y Wu
A growing body of nutritional science highlights the complex mechanisms and pleiotropic pathways of cardiometabolic effects of different foods. Among these, some of the most exciting advances are occurring in the area of flavonoids, bioactive phytochemicals found in plant foods; and in the area of dairy, including milk, yogurt, and cheese. Many of the relevant ingredients and mechanistic pathways are now being clarified, shedding new light on both the ingredients and the pathways for how diet influences health and well-being...
January 19, 2018: Circulation Research
https://www.readbyqxmd.com/read/29347936/comparative-analysis-of-copd-associated-with-tobacco-smoking-biomass-smoke-exposure-or-both
#16
Jordi Olloquequi, Sergio Jaime, Viviana Parra, Elizabeth Cornejo-Córdova, Gonzalo Valdivia, Àlvar Agustí, Rafael Silva O
BACKGROUND: Exposure to noxious gases and particles contained in both tobacco smoking (TS) and biomass smoke (BS) are well recognized environmental risk factors for chronic obstructive pulmonary disease (COPD). COPD is characterized by an abnormal inflammatory response, both in the pulmonary and systemic compartments. The differential effects of TS, BS or their combined exposure have not been well characterized yet. This study sought to compare the lung function characteristics and systemic inflammatory response in COPD patients exposed to TS, BS or their combination...
January 18, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29347762/modified-mean-field-theory-of-the-magnetic-properties-of-concentrated-high-susceptibility-polydisperse-ferrofluids
#17
Anna Yu Solovyova, Ekaterina A Elfimova, Alexey O Ivanov, Philip J Camp
The effects of particle-size polydispersity on the magnetostatic properties of concentrated ferrofluids are studied using theory and computer simulation. The second-order modified mean-field (MMF2) theory of Ivanov and Kuznetsova [Phys. Rev. E 64, 041405 (2001)1063-651X10.1103/PhysRevE.64.041405] has been extended by calculating additional terms of higher order in the dipolar coupling constant in the expansions of the initial magnetic susceptibility and the magnetization curve. The theoretical predictions have been tested rigorously against results from Monte Carlo simulations of model monodisperse, bidisperse, and highly polydisperse ferrofluids...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347761/analytical-mesoscale-modeling-of-aeolian-sand-transport
#18
Marc Lämmel, Klaus Kroy
The mesoscale structure of aeolian sand transport determines a variety of natural phenomena studied in planetary and Earth science. We analyze it theoretically beyond the mean-field level, based on the grain-scale transport kinetics and splash statistics. A coarse-grained analytical model is proposed and verified by numerical simulations resolving individual grain trajectories. The predicted height-resolved sand flux and other important characteristics of the aeolian transport layer agree remarkably well with a comprehensive compilation of field and wind-tunnel data, suggesting that the model robustly captures the essential mesoscale physics...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347757/evolution-of-the-pore-size-distribution-in-sheared-binary-glasses
#19
Nikolai V Priezjev, Maxim A Makeev
Molecular dynamics simulations are carried out to investigate mechanical properties and porous structure of binary glasses subjected to steady shear. The model vitreous systems were prepared via thermal quench at constant volume to a temperature well below the glass transition. The quiescent samples are characterized by a relatively narrow pore size distribution whose mean size is larger at lower glass densities. We find that in the linear regime of deformation, the shear modulus is a strong function of porosity, and the individual pores become slightly stretched while their structural topology remains unaffected...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347663/magnetization-plateau-as-a-result-of-the-uniform-and-gradual-electron-doping-in-a-coupled-spin-electron-double-tetrahedral-chain
#20
Lucia Gálisová
The double-tetrahedral chain in a longitudinal magnetic field, whose nodal lattice sites occupied by the localized Ising spins regularly alternate with triangular plaquettes with the dynamics described by the Hubbard model, is rigorously investigated. It is demonstrated that the uniform change of electron concentration controlled by the chemical potential in a combination with the competition between model parameters and the external magnetic field leads to the formation of one chiral and seven nonchiral phases at the absolute zero temperature...
November 2017: Physical Review. E
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