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https://www.readbyqxmd.com/read/28641266/an-approach-to-identifying-phenomena-accompanying-micro-and-nanoparticles-in-contact-with-irregular-vessel-walls
#1
K Talaska, A Ferreira
OBJECTIVE: The objective of this manuscript is to present the method for determining the nature and values of the forces needed to set micro and nanoparticles sitting immobile at the blood vessel wall in motion. METHODS: The problem was tackled in two ways. Microparticles were examined as objects coming into contact with the wall with the actual large arteriole-type vessel structure. The forces acting on microparticles 10 μm, 30 μm and 50 μm in diameter were determined: drag force FD, lift force FL, electrostatic force FE and gravity force FG...
June 19, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28640810/lassim-a-network-inference-toolbox-for-genome-wide-mechanistic-modeling
#2
Rasmus Magnusson, Guido Pio Mariotti, Mattias Köpsén, William Lövfors, Danuta R Gawel, Rebecka Jörnsten, Jörg Linde, Torbjörn Nordling, Elin Nyman, Sylvie Schulze, Colm E Nestor, Huan Zhang, Gunnar Cedersund, Mikael Benson, Andreas Tjärnberg, Mika Gustafsson
Recent technological advancements have made time-resolved, quantitative, multi-omics data available for many model systems, which could be integrated for systems pharmacokinetic use. Here, we present large-scale simulation modeling (LASSIM), which is a novel mathematical tool for performing large-scale inference using mechanistically defined ordinary differential equations (ODE) for gene regulatory networks (GRNs). LASSIM integrates structural knowledge about regulatory interactions and non-linear equations with multiple steady state and dynamic response expression datasets...
June 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28640674/racial-ethnic-minority-older-adults-perspectives-on-proposed-medicaid-reforms-effects-on-dental-care-access
#3
Mary E Northridge, Ivette Estrada, Eric W Schrimshaw, Ariel P Greenblatt, Sara S Metcalf, Carol Kunzel
To examine how proposed Medicaid reform plans are experienced by racial/ethnic minority older adults and what the implications are for their ability to access dental care through Medicaid, from 2013 to 2015 we conducted focus groups in northern Manhattan, New York, New York, among African American, Dominican, and Puerto Rican adults aged 50 years and older. Participants reported problems with affording copayments for care, complicated health and social issues, the need for vision and dental care close to home, and confusion about and stigmatization with Medicaid coverage...
June 22, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28637235/monotherapy-with-either-dolutegravir-or-raltegravir-fails-to-durably-suppress-hiv-viraemia-in-humanized-mice
#4
Alonso Heredia, Said Hassounah, Sandra Medina-Moreno, Juan C Zapata, Nhut M Le, Yingshan Han, James S Foulke, Charles Davis, Joseph Bryant, Robert R Redfield, Mark A Wainberg
Objectives: To compare the effectiveness of HIV integrase inhibitor monotherapy between raltegravir and dolutegravir as an approach to simplify therapy. Methods: We evaluated and compared the efficacy of 20 week monotherapy with dolutegravir or raltegravir in humanized mice (HSC-NSG) infected with HIV BaL . Plasma HIV RNA was measured by quantitative RT-PCR (limit of detection of 150 copies/45 μL of plasma) and drug levels by LC-MS/MS. Escape viruses were genotyped and analysed for replication capacity and drug susceptibility in tissue culture...
June 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28636770/a-technology-training-protocol-for-meeting-qsen-goals-focusing-on-meaningful-learning
#5
Shuhong Luo, Melanie Kalman
The purpose of this paper is to describe and discuss how we designed and developed a 12-step technology training protocol. The protocol is meant to improve meaningful learning in technology education so that nursing students are able to meet the informatics requirements of Quality and Safety Education in Nursing competencies. When designing and developing the training protocol, we used a simplified experiential learning model that addressed the core features of meaningful learning: to connect new knowledge with students' prior knowledge and real-world workflow...
June 21, 2017: Nursing Forum
https://www.readbyqxmd.com/read/28636461/genice-a-novel-framework-for-gene-network-inference-by-clustering-exhaustive-search-and-multivariate-analysis
#6
Ricardo de Souza Jacomini, David Correa Martins-Jr, Felipe Leno da Silva, Anna Helena Reali Costa
Gene network (GN) inference from temporal gene expression data is a crucial and challenging problem in systems biology. Expression data sets usually consist of dozens of temporal samples, while networks consist of thousands of genes, thus rendering many inference methods unfeasible in practice. To improve the scalability of GN inference methods, we propose a novel framework called GeNICE, based on probabilistic GNs; the main novelty is the introduction of a clustering procedure to group genes with related expression profiles and to provide an approximate solution with reduced computational complexity...
June 21, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28636372/surface-desorption-dielectric-barrier-discharge-ionization-mass-spectrometry
#7
Hong Zhang, Jie Jiang, Na Li, Ming Li, Yingying Wang, Jing He, Hong You
A variant of dielectric-barrier discharge named surface desorption dielectric-barrier discharge ionization (SDDBDI) mass spectrometry was developed for high-efficiency ion transmission and high spatial resolution imaging. In SDDBDI, a tungsten nanotip and the inlet of the mass spectrometer are used as electrodes, and a piece of cover slip is used as a sample plate as well as an insulating dielectric barrier, which simplifies the configuration of instrument and thus the operation. Different from volume dielectric-barrier discharge (VDBD), the microdischarges are generated on the surface at SDDBDI, and therefore the plasma density is extremely high...
June 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28635126/reinterpreting-maximum-entropy-in-ecology-a-null-hypothesis-constrained-by-ecological-mechanism
#8
James P O'Dwyer, Andrew Rominger, Xiao Xiao
Simplified mechanistic models in ecology have been criticised for the fact that a good fit to data does not imply the mechanism is true: pattern does not equal process. In parallel, the maximum entropy principle (MaxEnt) has been applied in ecology to make predictions constrained by just a handful of state variables, like total abundance or species richness. But an outstanding question remains: what principle tells us which state variables to constrain? Here we attempt to solve both problems simultaneously, by translating a given set of mechanisms into the state variables to be used in MaxEnt, and then using this MaxEnt theory as a null model against which to compare mechanistic predictions...
July 2017: Ecology Letters
https://www.readbyqxmd.com/read/28634174/prognostic-value-of-uric-acid-for-pulmonary-thromboembolism
#9
Savas Ozsu, Arif M Çoşar, Hayriye Bektas Aksoy, Yilmaz Bülbül, Funda Oztuna, S Caner Karahan, Tevfik Ozlu
BACKGROUND: Pulmonary thromboembolism is a serious cardiovascular condition with considerable morbidity and mortality. Clinical studies have indicated that hyperuricemia is an independent risk factor for cardiovascular events. The aim of this study was to investigate possible value of the serum levels of uric acid (UA) in predicting 30-d pulmonary thromboembolism-related mortality. METHODS: Pulmonary thromboembolism was confirmed by computed tomography pulmonary angiography, demographic data, troponin, systolic pressure and pulse on admission, and simplified pulmonary embolism severity index assessment...
June 20, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28633903/internal-validation-of-a-scoring-system-to-evaluate-the-probability-of-ureteral-stones-the-chokai-score
#10
Hiroki Fukuhara, Osamu Ichiyanagi, Shinichi Midorikawa, Hiroshi Kakizaki, Hisashi Kaneko, Norihiko Tsuchiya
OBJECTIVE: The CHOKAI and STONE scores are prediction models for ureteral stones. The aims of the present study were to evaluate the diagnostic performance, to examine the optimal cut-off value, and to compare the diagnostic performance of each model. METHODS: Patients who presented to our emergency department with renal colic were considered for this prospective study. We analyzed the predictive performance of both STONE and CHOKAI scores at their optimal cut-off values, using receiver operating characteristic (ROC) curve and area under the curve (AUC), as well as sensitivity, specificity, positive likelihood ratio (LR+), and negative likelihood ratio (LR-) at the optimal cut-off value...
June 13, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28633679/multistate-modeling-to-analyze-nosocomial-infection-data-an-introduction-and-demonstration
#11
Martin Wolkewitz, Maja von Cube, Martin Schumacher
OBJECTIVE Multistate and competing risks models have become an established and adequate tool with which to quantify determinants and consequences of nosocomial infections. In this tutorial article, we explain and demonstrate the basics of these models to a broader audience of professionals in health care, infection control, and hospital epidemiology. METHODS Using a publicly available data set from a cohort study of intensive care unit patients, we show how hospital infection data can be displayed and explored graphically and how simple formulas are derived under some simplified assumptions for illustrating the basic ideas behind multistate models...
June 21, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28633551/a-pareto-based-ensemble-with-feature-and-instance-selection-for-learning-from-multi-class-imbalanced-datasets
#12
Alberto Fernández, Cristobal José Carmona, María José Del Jesus, Francisco Herrera
Imbalanced classification is related to those problems that have an uneven distribution among classes. In addition to the former, when instances are located into the overlapped areas, the correct modeling of the problem becomes harder. Current solutions for both issues are often focused on the binary case study, as multi-class datasets require an additional effort to be addressed. In this research, we overcome these problems by carrying out a combination between feature and instance selections. Feature selection will allow simplifying the overlapping areas easing the generation of rules to distinguish among the classes...
April 11, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28633077/simplified-empirical-model-for-phosphorous-removal-in-a-facultative-wastewater-lagoon
#13
Saloni Vijay, Qiuyan Yuan
Nutrient removal in a facultative lagoon in Manitoba, Canada, was monitored from May 2015 to April 2016. According to the 12-month data, phosphorous concentration in the effluent did not meet the regulatory requirement. Various models have been developed to predict nitrogen removal from lagoon through the years; however, not much effort has been deployed to model phosphorous removal from lagoons. Therefore, this research aims to relate the lagoon phosphate removal to the volatile suspended solids (VSS), metal concentration, and detention time...
June 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28632906/improving-the-histologic-characterization-of-burn-depth
#14
Angela L F Gibson, Daniel D Bennett, Lauren J Taylor
BACKGROUND: Visual assessment of burn wound appearance is the standard of care to determine the depth of thermal injury but often incorrectly predicts wound healing potential. Histologic evaluation of hematoxylin and eosin (H&E) stained burn tissue is prone to subjectivity and is challenging for the novice. Lactate dehydrogenase (LDH) staining may offer a simplified and consistent technique to identify burn tissue viability. METHODS: Thirty tissue samples were obtained from six patients undergoing surgical excision for clinically determined deep partial thickness or full thickness burns...
June 20, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28632429/on-stable-states-in-a-topologically-driven-protein-folding-model
#15
Zheng Dai, David Becerra, Jérôme Waldispühl
Theoretical models of protein folding often make simplifying assumptions that allow analysis, yielding interesting theoretical results. In this article, we study models where folding dynamics is primarily driven by local topological features in an iterative manner. We illustrate the merit of the proposed approach through its ability to simulate realistic protein folding processes even when the sequence content information is reduced to just hydrophobic and polar. We then analyze our models and show that under our simple assumptions, certain structures are inherently unstable, and that determining whether structures can be stable is an [Formula: see text]-hard problem...
June 20, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28632281/consort-extension-for-chinese-herbal-medicine-formulas-2017-recommendations-explanation-and-elaboration-simplified-chinese-version
#16
Chung-Wah Cheng, Tai-Xiang Wu, Hong-Cai Shang, You-Ping Li, Douglas G Altman, David Moher, Zhao-Xiang Bian
Editors' Note: This article is the simplified Chinese version of the CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. (Cheng C, Wu T, Shang H, Li, Y, Altman D, Moher D; CONSORT-CHM Formulas 2017 Group. CONSORT Extension for Chinese Herbal Medicine Formulas 2017: Recommendations, Explanation, and Elaboration. Ann Intern Med. 2017. [Epub 27 June 2017]. doi:10.7326/M16-2977).
June 27, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28632272/interfacial-synthesis-of-a-three-dimensional-hierarchical-mos2-ns-ag-np-nanocomposite-as-a-sers-nanosensor-for-ultrasensitive-thiram-detection
#17
Xiu Liang, Yi-Shuo Wang, Ting-Ting You, Xiao-Juan Zhang, Nan Yang, Guang-Sheng Wang, Peng-Gang Yin
Interfacial self-assembly of ordered nanostructures at oil-water interfaces towards the fabrication of nanofilms has attracted the interest of plenty of scientists, since its discovery in 2004. Herein, further developments have been achieved, and we report a new strategy for the synthesis of a three-dimensional (3D) hierarchical nanostructure, through an interfacial synthesis driven microemulsion process. Thus, the synthesis route has been simplified, with the rigorous experimental conditions of traditional compositing technology...
June 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28631874/an-integrative-review-of-multicomponent-weight-management-interventions-for-adults-with-intellectual-disabilities
#18
Alison J Doherty, Stephanie P Jones, Umesh Chauhan, Josephine M E Gibson
BACKGROUND: Obesity is more prevalent in people with intellectual disabilities and increases the risk of developing serious medical conditions. UK guidance recommends multicomponent weight management interventions (MCIs), tailored for different population groups. METHODS: An integrative review utilizing systematic review methodology was conducted to identify the types of MCIs delivered to adults with intellectual disabilities. FINDINGS: Five studies were identified...
June 20, 2017: Journal of Applied Research in Intellectual Disabilities: JARID
https://www.readbyqxmd.com/read/28631803/a-gompertz-model-approach-to-microbial-inactivation-kinetics-by-high-pressure-processing-hpp-model-selection-and-experimental-validation
#19
Vinicio Serment-Moreno, Claudio Fuentes, José Antonio Torres, Jorge Welti-Chanes
A recently proposed Gompertz model (GMPZ) approach describing microbial inactivation kinetics by high-pressure processing (HPP) incorporated the initial microbial load (N0 ) and lower microbial quantification limit (Nlim ), and simplified the dynamic effects of come-up time (CUT). The inactivation of Listeria innocua in milk by HPP treatments at 300, 400, 500, and 600 MPa and pressure holding times (thold ) ≤10 min was determined experimentally to validate this model approach. Models based on exponential, logistic-exponential, and inverse functions were evaluated to describe the effect of pressure on the lag time (λ) and maximum inactivation rate (μmax ), whereas the asymptote difference (A) was fixed as A = log10 (N0 /Nlim )...
June 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28631108/reproduction-number-and-asymptotic-stability-for-the-dynamics-of-a-honey-bee-colony-with-continuous-age-structure
#20
M I Betti, L M Wahl, M Zamir
A system of partial differential equations is derived as a model for the dynamics of a honey bee colony with a continuous age distribution, and the system is then extended to include the effects of a simplified infectious disease. In the disease-free case, we analytically derive the equilibrium age distribution within the colony and propose a novel approach for determining the global asymptotic stability of a reduced model. Furthermore, we present a method for determining the basic reproduction number [Formula: see text] of the infection; the method can be applied to other age-structured disease models with interacting susceptible classes...
June 19, 2017: Bulletin of Mathematical Biology
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