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https://www.readbyqxmd.com/read/28806767/hydrodynamic-repulsion-of-spheroidal-microparticles-from-micro-rough-surfaces
#1
Aleksey V Belyaev
Isolation of microparticles and biological cells from mixtures and suspensions is a central problem in a variety of biomedical applications. This problem, for instance, is of an immense importance for microfluidic devices manipulating with whole blood samples. It is instructive to know how the mobility and dynamics of rigid microparticles is altered by the presence of micrometer-size roughness on walls. The presented theoretical study addresses this issue via computer simulations. The approach is based on a combination of the Lattice Boltzmann method for calculating hydrodynamics and the Lagrangian Particle dynamics method to describe the dynamics of cell membranes...
2017: PloS One
https://www.readbyqxmd.com/read/28806571/separation-and-characterization-of-allergic-polymerized-impurities-in-cephalosporins-by-2d-hpsec%C3%A3-lc-it-tof-ms
#2
Yu Xu, DanDan Wang, Lan Tang, Jian Wang
Eleven unknown allergic impurities in cefodizime, cefmenoxime and cefonicid were separated and characterized by a trap-free two-dimensional high performance size exclusion chromatography (HPSEC) and reversed phase liquid chromatography (RP-HPLC) coupled to high resolution ion trap/time-of-flight mass spectrometry (2D-HPSEC×LC-IT-TOF MS) with positive and negative modes of electrospray ionization method. Separation and characterization the allergic polymerized impurities in β-lactam antibiotics were on the basis of column-switching technique which effectively combined the advantages of HPSEC and the ability of RP-HPLC to identify the special impurities...
August 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28806558/nanoscale-zero-valent-iron-coated-with-rhamnolipid-as-an-effective-stabilizer-for-immobilization-of-cd-and-pb-in-river-sediments
#3
Wenjing Xue, Danlian Huang, Guangming Zeng, Jia Wan, Chen Zhang, Rui Xu, Min Cheng, Rui Deng
Nanoremediation strategies applied to contaminated river sediments can induce changes in the mobility and bioavailability of metals with potential consequences on ecosystem health. In this study, the performance of rhamnolipid (RL) coated nanoscale zero-valent iron (NZVI) in immobilizing cadmium (Cd) and lead (Pb) from contaminated river sediments was investigated. We demonstrated that RNZVI was effective in transforming labile Cd and Pb to stable fraction (the maximum residual percentage of Cd and Pb increased by 56...
June 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28806335/a-smartphone-application-for-customized-frequency-table-selection-in-cochlear-implants
#4
Daniel Jethanamest, Mahan Azadpour, Annette M Zeman, Elad Sagi, Mario A Svirsky
HYPOTHESIS: A novel smartphone-based software application can facilitate self-selection of frequency allocation tables (FAT) in postlingually deaf cochlear implant (CI) users. BACKGROUND: CIs use FATs to represent the tonotopic organization of a normal cochlea. Current CI fitting methods typically use a standard FAT for all patients regardless of individual differences in cochlear size and electrode location. In postlingually deaf patients, different amounts of mismatch can result between the frequency-place function they experienced when they had normal hearing and the frequency-place function that results from the standard FAT...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28805289/identifying-and-assessing-strategies-for-evaluating-the-impact-of-mobile-eye-health-units-on-health-outcomes
#5
REVIEW
Shiwan Fu, Angus Turner, Irene Tan, Josephine Muir
OBJECTIVE: To identify and assess strategies for evaluating the impact of mobile eye health units on health outcomes. DESIGN: Systematic literature review. SETTING: Worldwide. PARTICIPANTS: Peer-reviewed journal articles that included the use of a mobile eye health unit. MAIN OUTCOME MEASURE(S): Journal articles were included if outcome measures reflected an assessment of the impact of a mobile eye health unit on health outcomes...
August 14, 2017: Australian Journal of Rural Health
https://www.readbyqxmd.com/read/28804810/assessing-the-phytoavailability-of-arsenic-and-phosphorus-to-corn-plant-after-the-addition-of-an-acrylic-copolymer-to-polluted-soils
#6
Tahereh Mansouri, Ahmad Golchin, Hossein Kouhestani
Soil pollution by arsenic increases the potential risk of arsenic entrance into the food chain. The usefulness of maleic anhydride- styrene- acrylic acid copolymer on the mobility and phytoavailability of arsenic was evaluated. Treatments were the concentrations of acrylic copolymer (0, 0.05, 0.10, and 0.20% w/w) and the concentrations of soil total arsenic (0, 6, 12, 24, 48, and 96 mg kg(-1)). Sodium arsenate was added in appropriate amounts to subsamples of an uncontaminated soil to give contaminated soils with different levels of arsenic...
August 13, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28803600/development-and-validation-of-a-stability-indicating-hplc-method-for-imidapril-and-its-degradation-products-using-a-design-of-experiment-doe-approach
#7
Abiramasundari Arumugam, Amita Joshi, Kamala K Vasu
The present work focused on the application of design of experiment (DoE) principles to the development and optimization of a stability-indicating method (SIM) for the drug imidapril hydrochloride and its degradation products (DPs). The resolution of peaks for the DPs and their drug in a SIM can be influenced by many factors. The factors studied here were pH, gradient time, organic modifier, flow rate, molar concentration of the buffer, and wavelength, with the aid of a Plackett–Burman design. Results from the Plackett–Burman study conspicuously showed influence of two factors, pH and gradient time, on the analyzed response, particularly, the resolution of the closely eluting DPs (DP-5 and DP-6) and the retention time of the last peak...
August 14, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28803188/remediation-of-internal-phosphorus-loads-with-modified-clays-influence-of-fluvial-suspended-particulate-matter-and-response-of-the-benthic-macroinvertebrate-community
#8
Hongbin Yin, Grant B Douglas, Yongjiu Cai, Cheng Liu, Diego Copetti
Clay-based phosphorus (P) sorbents have been increasingly used as geoengineering materials for the management sediment-derived internal P loading in eutrophic lakes. However, the long-term behavior of these sorbents has remained elusive along with their response to burial under suspended particulate matter (SPM), and their effect on macroinvertebrate communities occupying dynamic regions at the sediment-water interface of shallow and turbid lakes. In this study, field mesocosm experiments were undertaken in Lake Chaohu, China, to study the effects of the application of lanthanum-modified bentonite (LMB) and thermally-modified calcium-rich attapulgite (TCAP) on sediment internal P loading and to assess their influence on macroinvertebrate community structure...
August 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28803155/assisted-phytoremediation-of-a-multi-contaminated-soil-investigation-on-arsenic-and-lead-combined-mobilization-and-removal
#9
Meri Barbafieri, Francesca Pedron, Gianniantonio Petruzzelli, Irene Rosellini, Elisabetta Franchi, Roberto Bagatin, Marco Vocciante
The removal of contaminants from an earthy matrix by phytoremediation requires the selection of appropriate plant species and a suitable strategy to be effective. In order to set up an assisted phytoremediation intervention related to a disused industrial site affected by an arsenic and lead complex contamination, an extensive experimental investigation on micro and mesocosm scale has been conducted. Particular attention was given to the choice of plant species: using crop plants (Lupinus albus, Helianthus annuus and Brassica juncea) a series of parallel test campaigns have been realized to investigate different scenarios for the reclamation...
August 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28802523/development-of-a-split-flow-system-for-high-precision-variable-sample-introduction-in-supercritical-fluid-chromatography
#10
Miho Sakai, Yoshihiro Hayakawa, Yasuhiro Funada, Takashi Ando, Eiichiro Fukusaki, Takeshi Bamba
In this study, we propose a novel variable sample injection system based on full-loop injection, named the split-flow sample introduction system, for application in supercritical fluid chromatography (SFC). In this system, the mobile phase is split by the differential pressure between two back pressure regulators (BPRs) after full-loop injection suitable for SFC, and this differential pressure determines the introduction rate. Nine compounds with a wide range of characteristics were introduced with high reproducibility and universality, confirming that a robust variable sample injection system was achieved...
July 25, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28802242/an-lc-ms-ms-method-for-simultaneous-determination-of-nine-steroidal-saponins-from-paris-polyphylla-var-in-rat-plasma-and-its-application-to-pharmacokinetic-study
#11
Guangyi Yang, Wei Lu, Meng Pan, Chenning Zhang, Yuan Zhou, Pei Hu, Ming Hu, Gao Song
Paris polyphylla var is an herbal plant herb widely used in Traditional Chinese Medicine. The purpose of this study is to develop an Ultra Performance Liquid Chromatography-tandem mass spectrometer (UPLC-MS) method to quantify the major components (i.e., nine saponins) from P. polyphylla in plasma samples. A UItra BiPh column (100×2.1mm, 5μm) was used with acetonitrile/0.1% formic acid in water as mobile phases. The analytes were quantified using a Waters XEVO TQ mass spectrometer via multiple reaction monitoring (MRM) with positive scan mode...
August 1, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28802129/interactions-of-two-novel-stabilizing-amendments-with-sunflower-plants-grown-in-a-contaminated-soil
#12
Zuzana Michálková, Domingo Martínez-Fernández, Michael Komárek
Several efficient stabilizing amendments have been recently proposed for the remediation of metal(loid)-contaminated soils. However, information on their interactions with plants, which is a crucial factor in soil environments, are still scarce. An amorphous manganese oxide (AMO) synthesized from organic compounds and nano zerovalent iron (nZVI) have been previously tested as promising stabilizing agents usable both for the stabilization of metals and As. Experiments with rhizoboxes were performed in order to evaluate their influence on the mobility of metal(loid)s in the bulk soil and rhizosphere of sunflower (Helianthus annuus L...
August 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28801393/protocol-for-the-mwellcare-trial-a-multicentre-cluster-randomised-12-month-controlled-trial-to-compare-the-effectiveness-of-mwellcare-an-mhealth-system-for-an-integrated-management-of-patients-with-hypertension-and-diabetes-versus-enhanced-usual-care-in-india
#13
Dilip Jha, Priti Gupta, Vamadevan S Ajay, Devraj Jindal, Pablo Perel, David Prieto-Merino, Pramod Jacob, Jonathan Nyong, Vidya Venugopal, Kavita Singh, Shifalika Goenka, Ambuj Roy, Nikhil Tandon, Vikram Patel, Dorairaj Prabhakaran
INTRODUCTION: Rising burden of cardiovascular disease (CVD) and diabetes is a major challenge to the health system in India. Innovative approaches such as mobile phone technology (mHealth) for electronic decision support in delivering evidence-based and integrated care for hypertension, diabetes and comorbid depression have potential to transform the primary healthcare system. METHODS AND ANALYSIS: mWellcare trial is a multicentre, cluster randomised controlled trial evaluating the clinical and cost-effectiveness of a mHealth system and nurse managed care for people with hypertension and diabetes in rural India...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801207/crediblemeds-org-what-does-it-offer
#14
REVIEW
Raymond L Woosley, Kristin Black, C William Heise, Klaus Romero
Since the 1990s, when numerous non-cardiac drugs were first recognized to have the potential to prolong the QT interval and cause torsades de pointes (TdP), clinicians, drug regulators, drug developers, and clinical investigators have become aware of the complexities of assessing evidence and determining TdP causality for the many drugs being marketed or under development. To facilitate better understanding, the Arizona Center for Education and Research on Therapeutics, known as AZCERT, has developed the CredibleMeds...
August 1, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28801082/-how-to-videos-improve-residents-performance-of-essential-perioperative-electronic-medical-records-and-clinical-tasks
#15
Veronica Zoghbi, Robert C Caskey, Kristoffel R Dumon, Jacqueline M Soegaard Ballester, Ari D Brooks, Jon B Morris, Daniel T Dempsey
OBJECTIVE: The ability to use electronic medical records (EMR) is an essential skill for surgical residents. However, frustration and anxiety surrounding EMR tasks may detract from clinical performance. We created a series of brief, 1-3 minutes "how to" videos demonstrating 7 key perioperative EMR tasks: booking OR cases, placing preprocedure orders, ordering negative-pressure wound dressing supplies, updating day-of-surgery history and physical notes, writing brief operative notes, discharging patients from the postanesthesia care unit, and checking vital signs...
August 8, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28800736/using-computer-mobile-and-wearable-technology-enhanced-interventions-to-reduce-sedentary-behaviour-a-systematic-review-and-meta-analysis
#16
REVIEW
Aoife Stephenson, Suzanne M McDonough, Marie H Murphy, Chris D Nugent, Jacqueline L Mair
BACKGROUND: High levels of sedentary behaviour (SB) are associated with negative health consequences. Technology enhanced solutions such as mobile applications, activity monitors, prompting software, texts, emails and websites are being harnessed to reduce SB. The aim of this paper is to evaluate the effectiveness of such technology enhanced interventions aimed at reducing SB in healthy adults and to examine the behaviour change techniques (BCTs) used. METHODS: Five electronic databases were searched to identify randomised-controlled trials (RCTs), published up to June 2016...
August 11, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28798302/low-voltage-high-performance-organic-field-effect-transistors-based-on-2d-crystalline-molecular-semiconductors
#17
Qijing Wang, Sai Jiang, Jun Qian, Lei Song, Lei Zhang, Yujia Zhang, Yuhan Zhang, Yu Wang, Xinran Wang, Yi Shi, Youdou Zheng, Yun Li
Two dimensional (2D) molecular crystals have attracted considerable attention because of their promising potential in electrical device applications, such as high-performance field-effect transistors (FETs). However, such devices demand high voltages, thereby considerably increasing power consumption. This study demonstrates the fabrication of organic FETs based on 2D crystalline films as semiconducting channels. The application of high-κ oxide dielectrics allows the transistors run under a low operating voltage (-4 V)...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798009/preliminary-evaluation-of-a-brief-web-and-mobile-phone-intervention-for-men-with-depression-men-s-positive-coping-strategies-and-associated-depression-resilience-and-work-and-social-functioning
#18
Andrea Susan Fogarty, Judy Proudfoot, Erin Louise Whittle, Janine Clarke, Michael J Player, Helen Christensen, Kay Wilhelm
BACKGROUND: Previous research has identified that men experiencing depression do not always access appropriate health services. Web-based interventions represent an alternative treatment option for men, are effective in reducing anxiety and depression, and have potential for wide dissemination. However, men do not access Web-based programs at the same rate as women. Programs with content explicitly tailored to men's mental health needs are required. OBJECTIVE: This study evaluated the applicability of Man Central, a new Web and mobile phone intervention for men with depression...
August 10, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28797783/results-of-prospective-randomized-open-label-non-inferiority-study-of-tbo-filgrastim-granix-%C3%A2-versus-filgrastim-neupogen-%C3%A2-in-combination-with-plerixafor-for-autologous-stem-cell-mobilization-in-patients-with-multiple-myeloma-or-non-hodgkin-lymphoma
#19
Pavan Kumar Bhamidipati, Mark A Fiala, Brenda J Grossman, John F DiPersio, Keith Stokerl-Goldstein, Feng Gao, Geoffrey L Uy, Peter Westervelt, Mark A Schroeder, Amanda F Cashen, Camille N Abboud, Ravi Vij
Autologous hematopoietic stem cell transplantation (Auto- HSCT) improves survival in multiple myeloma (MM) and Non-Hodgkin lymphoma (NHL). Traditionally, filgrastim (Neupogen® - recombinant G-CSF) has been used in as a single agent or in combination with plerixafor for stem cell mobilization for auto-HSCT. In Europe, recombinant G-CSF biosimilar (Tevagrastim®) is approved for various indications similar to reference filgrastim, including stem cell mobilization for auto-HSCT; However, tbo- Filgrastim (Granix®) is registered under original biologic application and is not approved for stem cell mobilization in the USA...
August 7, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28797255/barriers-to-routine-g6pd-testing-prior-to-treatment-with-primaquine
#20
Benedikt Ley, Kamala Thriemer, Jessica Jaswal, Eugenie Poirot, Mohammad Shafiul Alam, Ching Swe Phru, Wasif Ali Khan, Lek Dysoley, Gao Qi, Chong Chee Kheong, Ummi Kalthom Shamsudin, Ingrid Chen, Jimee Hwang, Roly Gosling, Ric N Price
BACKGROUND: Primaquine is essential for the radical cure of vivax malaria, however its broad application is hindered by the risk of drug-induced haemolysis in individuals with glucose-6-phosphate-dehydrogenase (G6PD) deficiency. Rapid diagnostic tests capable of diagnosing G6PD deficiency are now available, but these are not used widely. METHODS: A series of qualitative interviews were conducted with policy makers and healthcare providers in four vivax-endemic countries...
August 10, 2017: Malaria Journal
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