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https://www.readbyqxmd.com/read/28318620/factors-associated-with-mortality-risk-in-critical-care-patients-treated-with-veno-arterial-extracorporeal-membrane-oxygenation
#1
Sun Hee Lee, Dong-Soo Shin, Jong Ran Kim, Hyunjung Kim
OBJECTIVES: To identify factors associated with mortality in patients treated with veno-arterial extracorporeal membrane oxygenation (VA-ECMO) and to validate the discrimination of the risk assessment tools to predict mortality. BACKGROUND: VA-ECMO is a rescue therapy for patients with life-threatening cardiac failure, but mortality remains high. METHODS: In this retrospective study, we reviewed the medical records of adult patients who underwent VA-ECMO in an intensive care unit of a university hospital, between 2009 and 2013...
March 16, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28318569/designing-affinity-chromatographic-processes-for-the-capture-of-antibodies-part-i-a-simplified-approach
#2
D Pfister, L David, M Holzer, R-M Nicoud
Protein A affinity chromatography is a standard technique for the purification of therapeutic antibodies. Recently, multi-column chromatographic processes have emerged to turn classical capture processes into more efficient and continuous systems. The design of such chromatographic processes, be they single-column or multi-column systems, is described in this work. A rational method to conceive, scale-up and compare processes is proposed and illustrated with different examples. All along this article, the results of the equilibrium theory, i...
March 2, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28316972/prediction-of-pig-trade-movements-in-different-european-production-systems-using-exponential-random-graph-models
#3
Anne Relun, Vladimir Grosbois, Tsviatko Alexandrov, Jose M Sánchez-Vizcaíno, Agnes Waret-Szkuta, Sophie Molia, Eric Marcel Charles Etter, Beatriz Martínez-López
In most European countries, data regarding movements of live animals are routinely collected and can greatly aid predictive epidemic modeling. However, the use of complete movements' dataset to conduct policy-relevant predictions has been so far limited by the massive amount of data that have to be processed (e.g., in intensive commercial systems) or the restricted availability of timely and updated records on animal movements (e.g., in areas where small-scale or extensive production is predominant). The aim of this study was to use exponential random graph models (ERGMs) to reproduce, understand, and predict pig trade networks in different European production systems...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28316939/application-of-established-pathophysiologic-processes-brings-greater-clarity-to-diagnosis-and-treatment-of-hyponatremia
#4
EDITORIAL
John K Maesaka, Louis J Imbriano, Nobuyuki Miyawaki
Hyponatremia, serum sodium < 135 mEq/L, is the most common electrolyte abnormality and is in a state of flux. Hyponatremic patients are symptomatic and should be treated but our inability to consistently determine the causes of hyponatremia has hampered the delivery of appropriate therapy. This is especially applicable to differentiating syndrome of inappropriate antidiuresis (SIAD) from cerebral salt wasting (CSW) or more appropriately, renal salt wasting (RSW), because of divergent therapeutic goals, to water-restrict in SIAD and administer salt and water in RSW...
March 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28316079/insectivorous-birds-disrupt-biological-control-of-cereal-aphids
#5
Ingo Grass, Katrin Lehmann, Carsten Thies, Teja Tscharntke
Insect-feeding birds may interfere with trophic interactions in plant-insect food webs, which may be particularly important in agroecosystems. Here, we studied how Eurasian tree sparrows (Passer montanus) affect aphids and their predators in cereal fields using bird exclusion experiments. The tree sparrows fed their nestlings with aphid antagonists. Hoverflies and ladybird beetles accounted for 77% of the food for the nestlings during peak aphid density. When birds were excluded, densities of hoverfly larvae, which were the most abundant aphid predator group in the cereals, were 4% higher in wheat and 45% higher in oat, while aphid densities were 24% lower in wheat and 26% lower in oat...
March 17, 2017: Ecology
https://www.readbyqxmd.com/read/28315780/simplifying-mental-math-changing-how-added-sugars-are-displayed-on-the-nutrition-facts-label-can-improve-consumer-understanding
#6
Neha Khandpur, Dan J Graham, Christina A Roberto
BACKGROUND: Proposed variations to Nutrition Facts Labels (NFL) have included the display of added sugars (AS) content, but its impact on consumer understanding is poorly understood. OBJECTIVE: To examine the degree to which different formats for displaying AS influence consumer understanding, perceptions, and purchase intentions. DESIGN: Randomized-controlled online experiment. PARTICIPANTS: A sample of 2509 U.S adults...
March 15, 2017: Appetite
https://www.readbyqxmd.com/read/28315566/directly-ventricular-septal-defect-closure-without-using-arteriovenous-wire-loop-our-adult-case-series-using-transarterial-retrograde-approach
#7
Nihat Pekel, Ertuğrul Ercan, Mehmet Emre Özpelit, Ferhat Özyurtlu, Akar Yılmaz, Caner Topaloğlu, Serkan Saygı, Serkan Yakan, İstemihan Tengiz
OBJECTIVE: The standard transcatheter ventricular septal defects (VSD) closure procedure is established with arteriovenous (AV) loop and is called as antegrade approach. The directly retrograde transarterial VSD closure without using AV loop might be better option as shortens the procedure time and decreases radiation exposure. METHODS: Our series consist of twelve sequential adult cases with congenital VSDs (seven with perimembranous, four with muscular, one with postoperative residuel VSD)...
February 21, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28315376/effect-of-a-novel-quaternary-ammonium-silane-cavity-disinfectant-on-durability-of-resin-dentine-bond
#8
D Umer, C K Y Yiu, M F Burrow, L-N Niu, F R Tay
OBJECTIVE: The present study examined the effect of a quaternary ammonium silane (QAS) cavity disinfectant on the viability of human dental pulp cells, dentine bond durability and nanoleakage of simplified etch-and-rinse adhesives. METHODS: Etched dentine surface of third molars were randomly divided into two adhesive groups, Adper™ Single Bond 2 and Prime & Bond(®) NT™. For each adhesive, the teeth were randomly assigned to five cavity disinfectant groups (N=6): Group 1: deionised water (control); Group 2: 2% chlorhexidine (CHX); Group 3: 2% QAS; Group 4: 5% QAS and Group 5: 10% QAS...
March 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28315061/external-validation-of-the-simplified-preoperative-assessment-for-low-grade-mucinous-adenocarcinoma-of-the-appendix
#9
Vladimir Milovanov, Armando Sardi, Nail Aydin, Carol Nieroda, Michelle Sittig, Vadim Gushchin
BACKGROUND: MD Anderson Cancer Center developed a computed tomography (CT)-based preoperative assessment tool simplified preoperative assessment for appendix tumor (SPAAT) for predicting incomplete cytoreduction (IC) in low-grade mucinous adenocarcinoma (LGMA) of the appendix, based on preoperative CT scans. This study independently evaluates the tool's performance. METHODS: Seventy-six preoperative CT scans of LGMA patients were evaluated by two surgeons unfamiliar with the patients' medical history...
March 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28314154/streamlined-approach-to-mapping-the-magnetic-induction-of-skyrmionic-materials
#10
Jordan J Chess, Sergio A Montoya, Tyler R Harvey, Colin Ophus, Simon Couture, Vitaliy Lomakin, Eric E Fullerton, Benjamin J McMorran
Recently, Lorentz transmission electron microscopy (LTEM) has helped researchers advance the emerging field of magnetic skyrmions. These magnetic quasi-particles, composed of topologically non-trivial magnetization textures, have a large potential for application as information carriers in low-power memory and logic devices. LTEM is one of a very few techniques for direct, real-space imaging of magnetic features at the nanoscale. For Fresnel-contrast LTEM, the transport of intensity equation (TIE) is the tool of choice for quantitative reconstruction of the local magnetic induction through the sample thickness...
February 28, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28314131/indicators-role-how-do-they-influence-strategic-environmental-assessment-and-sustainable-planning-the-chinese-experience
#11
Jingjing Gao, Per Christensen, Lone Kørnøv
As an information carrier and communication medium, indicators provide useful decision-making assistance in setting process goals and effectively reaching the goals. The main focus of this article is to investigate indicators' role in influencing planning through Strategic Environmental Assessment (SEA) especially related to Chinese experiences. From the perspective of planning and decision-making theory, the influence on planning is studied as influence of planning structure and influence of planning actors...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28314054/a-cross-sectional-survey-of-the-nature-and-correlates-of-sleep-disturbance-in-people-with-psoriasis
#12
A L Henry, S D Kyle, A Chisholm, C E M Griffiths, C Bundy
BACKGROUND: Research suggests that sleep disturbance is common in psoriasis. Despite 32 studies conducted in sleep, many demonstrate methodological flaws, often using unvalidated measurement, with no study examining multiple dimensions of sleep-wake functioning. Moreover, research has yet to comprehensively examine the range of physical and psychological factors that may affect sleep in people with psoriasis. OBJECTIVE: To characterise sleep disturbance using validated measures and identify physical and psychological predictors of sleep quality in people with psoriasis...
March 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28306551/master-equations-and-the-theory-of-stochastic-path-integrals
#13
Markus F Weber, Erwin Frey
This review provides a pedagogic and self-contained introduction to master equations and to their representation by path integrals. Since the 1930s, master equations have served as a fundamental tool to understand the role of fluctuations in complex biological, chemical, and physical systems. Despite their simple appearance, analyses of master equations most often rely on low-noise approximations such as the Kramers-Moyal or the system size expansion, or require ad-hoc closure schemes for the derivation of low-order moment equations...
April 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28306290/mellin-amplitudes-for-supergravity-on-ads_-5-%C3%A3-s-5
#14
Leonardo Rastelli, Xinan Zhou
We revisit the calculation of holographic correlation functions in type-IIB supergravity on AdS_{5}×S^{5}. Results for four-point functions simplify drastically when expressed in Mellin space. We conjecture a compact formula for the four-point functions of one-half Bogomol'nyi-Prasad-Sommerfield single-trace operators of arbitrary weight. Our methods rely on general consistency conditions and eschew detailed knowledge of the supergravity effective action.
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28304354/accurate-compensation-of-attitude-angle-error-in-a-dual-axis-rotation-inertial-navigation-system
#15
Rui Jiang, Gongliu Yang, Rui Zou, Jing Wang, Jing Li
In the dual-axis rotation inertial navigation system (INS), besides the gyro error, accelerometer error, rolling misalignment angle error, and the gimbal angle error, the shaft swing angle and the axis non-orthogonal angle also affect the attitude accuracy. Through the analysis of the structure, we can see that the shaft swing angle and axis non-orthogonal angle will produce coning errors which cause the fluctuation of the attitude. According to the analysis of the rotation vector, it can be seen that the coning error will generate additional drift velocity along the rotating shaft, which can reduce the navigation precision of the system...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304353/phase-error-correction-for-approximated-observation-based-compressed-sensing-radar-imaging
#16
Bo Li, Falin Liu, Chongbin Zhou, Yuanhao Lv, Jingqiu Hu
Defocus of the reconstructed image of synthetic aperture radar (SAR) occurs in the presence of the phase error. In this work, a phase error correction method is proposed for compressed sensing (CS) radar imaging based on approximated observation. The proposed method has better image focusing ability with much less memory cost, compared to the conventional approaches, due to the inherent low memory requirement of the approximated observation operator. The one-dimensional (1D) phase error correction for approximated observation-based CS-SAR imaging is first carried out and it can be conveniently applied to the cases of random-frequency waveform and linear frequency modulated (LFM) waveform without any a priori knowledge...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304129/development-of-shiny-app-tools-to-simplify-and-standardize-the-analysis-of-hemostasis-assay-data-communication-from-the-ssc-of-the-isth
#17
C Longstaff
No abstract text is available yet for this article.
February 17, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28303312/neutral-evolution-and-dispersal-limitation-produce-biogeographic-patterns-in-microcystis-aeruginosa-populations-of-lake-systems
#18
Sahar Shirani, Ferdi L Hellweger
Molecular observations reveal substantial biogeographic patterns of cyanobacteria within systems of connected lakes. An important question is the relative role of environmental selection and neutral processes in the biogeography of these systems. Here, we quantify the effect of genetic drift and dispersal limitation by simulating individual cyanobacteria cells using an agent-based model (ABM). In the model, cells grow (divide), die, and migrate between lakes. Each cell has a full genome that is subject to neutral mutation (i...
March 16, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28303182/determining-the-factors-affecting-the-distribution-of-muscari-latifolium-an-endemic-plant-of-turkey-and-a-mapping-species-distribution-model
#19
Hatice Yilmaz, Osman Yalçın Yilmaz, Yaşar Feyza Akyüz
Species distribution modeling was used to determine factors among the large predictor candidate data set that affect the distribution of Muscari latifolium, an endemic bulbous plant species of Turkey, to quantify the relative importance of each factor and make a potential spatial distribution map of M. latifolium. Models were built using the Boosted Regression Trees method based on 35 presence and 70 absence records obtained through field sampling in the Gönen Dam watershed area of the Kazdağı Mountains in West Anatolia...
February 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28302731/selecting-statistical-quality-control-procedures-for-limiting-the-impact-of-increases-in-analytical-random-error-on-patient-safety
#20
Martín Yago
BACKGROUND: QC planning based on risk management concepts can reduce the probability of harming patients due to an undetected out-of-control error condition. It does this by selecting appropriate QC procedures to decrease the number of erroneous results reported. The selection can be easily made by using published nomograms for simple QC rules when the out-of-control condition results in increased systematic error. However, increases in random error also occur frequently and are difficult to detect, which can result in erroneously reported patient results...
March 16, 2017: Clinical Chemistry
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