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https://www.readbyqxmd.com/read/28735499/an-evaluation-of-the-reliability-of-the-characterization-of-the-porous-structure-of-activated-carbons-based-on-incomplete-nitrogen-adsorption-isotherms
#1
Mirosław Kwiatkowski, Bassim H Hameed
The paper presents the results of research devoted to reliability evaluation of the analysis of results of the porous structure of activated carbons based on incomplete nitrogen adsorption isotherms using the BET, t-plot, and NLDFT methods, as well as the LBET method comprising the unique numerical fast multivariant procedure of adsorption system identification. The research involved the application of the nitrogen adsorption isotherms obtained for five samples of activated carbons produced from waste materials of organic origin by way of chemical activation with potassium hydroxide, sodium hydroxide, and potassium carbonate with the use of microwave heating...
August 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28735415/cfd-simulation-of-aerosol-delivery-to-a-human-lung-via-surface-acoustic-wave-nebulization
#2
Morteza Yousefi, Oveis Pourmehran, Mofid Gorji-Bandpy, Kiao Inthavong, Leslie Yeo, Jiyuan Tu
Administration of drug in the form of particles through inhalation is generally preferable in the treatment of respiratory disorders. Conventional inhalation therapy devices such as inhalers and nebulizers, nevertheless, suffer from low delivery efficiencies, wherein only a small fraction of the inhaled drug reaches the lower respiratory tract. This is primarily because these devices are not able to produce a sufficiently fine drug mist that has aerodynamic diameters on the order of a few microns. This study employs computational fluid dynamics to investigate the transport and deposition of the drug particles produced by a new aerosolization technique driven by surface acoustic waves (SAWs) into an in silico lung model geometrically reconstructed using computed tomography scanning...
July 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28735388/epigenetics-and-rna-processing-connections-to-drought-salt-and-aba
#3
Min May Wong, Geeng Loo Chong, Paul E Verslues
There have been great research advances in epigenetics, RNA splicing, and mRNA processing over recent years. In parallel, there have been many advances in abiotic stress and Abscisic Acid (ABA) signaling. Here we overview studies that have examined stress-induced changes in the epigenome and RNA processing as well as cases where disrupting these processes changes the plant response to abiotic stress. We also highlight some examples where specific connections of stress or ABA signaling to epigenetics or RNA processing have been found...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735372/a-systematic-review-and-taxonomy-of-published-quality-criteria-related-to-the-evaluation-of-user-facing-ehealth-programs
#4
Amit Baumel, Michael L Birnbaum, Madalina Sucala
The purpose of this review was to identify and classify key criteria concepts related to the evaluation of user-facing eHealth programs. In line with the PRISMA statement methodology, computer searches of relevant databases were conducted for studies published between January 1, 2000 and March 1, 2016 that contained explicit quality criteria related to mHealth and eHealth products. Reference lists of included articles, review articles, and grey literature (e.g., books, websites) were searched for additional sources...
August 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28735275/tobacco-price-boards-as-a-promotional-strategy-a-longitudinal-observational-study-in-australian-retailers
#5
Megan Bayly, Michelle Scollo, Sarah White, Kylie Lindorff, Melanie Wakefield
BACKGROUND: Price boards in tobacco retailers are one of the few forms of tobacco promotion remaining in Australia. This study aimed to examine how these boards were used to promote products over a period of rapidly rising taxes. METHODS: Observations were made in a panel of 350 stores in Melbourne, Australia, in November of 2013 (just before) and in 2014 and 2015 (after 12.5% increases in tobacco duty). Fieldworkers unobtrusively noted the presence and characteristics of price boards, and the brand name, size and price of the product at the top of each board...
July 22, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28735259/observational-study-on-the-palatability-and-tolerability-of-oral-prednisolone-and-oral-dexamethasone-in-children-in-saudi-arabia-and-the-uk
#6
Fahad Aljebab, Mofadhi Alanazi, Imti Choonara, Sharon Conroy
BACKGROUND: Short-course oral corticosteroids are routinely used to treat acute asthma and croup. We evaluated their tolerability and palatability in Saudi Arabian (SA) and UK children. METHODS: Prospective observational/interview study (3 months in each country). Palatability was evaluated using a 5-point facial Hedonicscale and tolerability by direct questioning of patient/parents. RESULTS: In SA, of 122 patients (2-10 years) recruited, 52 received prednisolone base tablets, 37 prednisolone sodium phosphate syrup and 33 received dexamethasone elixir...
July 22, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28735238/the-influence-of-heavy-metals-on-toxicogenetic-damage-in-a-brazilian-tropical-river
#7
Leomá A Matos, Ana C S Cunha, Aline A Sousa, Jéssica P R Maranhão, Nathanyel R S Santos, Matheus de M C Gonçalves, Sandra M M de M Dantas, João M de C E Sousa, Ana P Peron, Felipe Cavalcanti Carneiro da Silva, Marcus V O B de Alencar, Md Torequl Islam, Raí Pablo Sousa de Aguiar, Ana A de C Melo-Cavalcante, Claúdia C Bonecker, Horácio F J Junior
Anthropogenic activities in tropical rivers favor the eutrophication process, which causes increased concentration of heavy metals. The presence and bioaccumulation of metals are directly related to the presence of genotoxic damage in aquatic organisms. Thus, we evaluated the presence of heavy metals (Fe, Zn, Cr, Cu and Al) and performed toxicogenetic tests in surface (S) and bottom (B) of water samples of the Poti river (Piaui/Brazil). Cytotoxicity and genotoxicity tests were performed in Allium cepa, and micronucleus (MN) and comet assay were performed in Oreochromis niloticus...
July 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28735160/longitudinal-assessment-of-gait-quality-in-children-with-bilateral-cerebral-palsy-following-repeated-lower-limb-intramuscular-botulinum-toxin-a-injections
#8
Felicity A Read, Roslyn N Boyd, Lee A Barber
BACKGROUND: Serial lower limb intramuscular Botulinum toxin-A (BoNT-A) injections are administered to children with bilateral spastic cerebral palsy (BCP) to reduce spasticity, improve walking and functional mobility, and delay the need for orthopaedic surgery. Gait quality is clinically assessed following BoNT-A with 2D video gait assessments (2DVGA) using the Edinburgh Visual Gait Score (EVGS). AIM: To determine the effect of three consecutive treatment cycles of lower limb intramuscular BoNT-A injections on gait quality using the EVGS in children with BCP by retrospectively reviewing repeated 2DVGA measures...
July 20, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28735139/cumulative-intracranial-tumor-volume-and-number-of-brain-metastasis-as-predictors-of-developing-new-lesions-after-stereotactic-radiosurgery-for-brain-metastasis
#9
Mayur Sharma, Xuefei Jia, Manmeet Ahluwalia, Gene H Barnett, Michael A Vogelbaum, Samuel T Chao, John H Suh, Erin S Murphy, Jennifer S Yu, Lilyana Angelov, Alireza M Mohammadi
INTRODUCTION: The aim of our study was to identify risk factors associated with early distant radiographic progression in patients undergoing stereotactic radiosurgery (SRS) for brain metastases (BM). METHODS: Following IRB approval, data of 1427 patients (4283 BM lesions) who were treated using SRS at Cleveland Clinic from 2000-2012 were collected. Local tumor progression (LTP), distant tumor progression (DTP) and radiographic radiation necrosis (RN) were the primary end points...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735112/evaluation-of-the-accuracy-of-mono-energetic-electron-and-beta-emitting-isotope-dose-point-kernels-using-particle-and-heavy-ion-transport-code-system-phits
#10
Takuro Shiiba, Naoya Kuga, Yasuyoshi Kuroiwa, Tatsuhiko Sato
We assessed the accuracy of mono-energetic electron and beta-emitting isotope dose-point kernels (DPKs) calculated using the particle and heavy ion transport code system (PHITS) for patient-specific dosimetry in targeted radionuclide treatment (TRT) and compared our data with published data. All mono-energetic and beta-emitting isotope DPKs calculated using PHITS, both in water and compact bone, were in good agreement with those in literature using other MC codes. PHITS provided reliable mono-energetic electron and beta-emitting isotope scaled DPKs for patient-specific dosimetry...
July 15, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28735099/subcellular-expression-of-aquaporin-4-in-substantia-nigra-of-normal-and-mptp-treated-mice
#11
Agnete Prydz, Katja Stahl, Maja Puchades, Nina Davarpaneh, Maria Nadeem, Ole Petter Ottersen, Vidar Gundersen, Mahmood Amiry-Moghaddam
Aquaporin-4 (AQP4) is the predominant water channel in mammalian CNS where it is localized at the perivascular astrocytic foot processes abutting brain microvessels. Several lines of evidence suggest that AQP4 is involved in important homeostatic functions and that mislocalization of the perivascular pool of AQP4 is implicated in several different brain disorders. A recent study suggests that the differential susceptibility of midbrain dopaminergic neurons to the parkinsonogenic toxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) depends on the expression of AQP4...
July 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28735067/treatment-sequence-with-either-irinotecan-cetuximab-followed-by-folfox-4-or-the-reverse-strategy-in-metastatic-colorectal-cancer-patients-progressing-after-first-line-folfiri-bevacizumab-an-italian-group-for-the-study-of-gastrointestinal-cancer-phase-iii-randomised
#12
Stefano Cascinu, Gerardo Rosati, Guglielmo Nasti, Sara Lonardi, Alberto Zaniboni, Paolo Marchetti, Francesco Leone, Domenico Bilancia, Rosario Vincenzo Iaffaioli, Vittorina Zagonel, Monica Giordano, Domenico C Corsi, Francesco Ferraú, Roberto Labianca, Monica Ronzoni, Mario Scartozzi, Francesca Galli
INTRODUCTION: The optimal treatment strategy for RAS wild type (WT) mCRC is controversial. Our phase III study investigated the effect of introducing earlier (second-line) or later (third-line) cetuximab in patients progressed after FOLFIRI/bevacizumab first-line. PATIENTS AND METHODS: mCRC patients progressing after FOLFIRI/bevacizumab first-line were randomised to receive second-line irinotecan/cetuximab followed by third-line FOLFOX-4 (arm A) or the reverse sequence (arm B)...
July 20, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28735045/multiplexed-capillary-microfluidic-immunoassay-with-smartphone-data-acquisition-for-parallel-mycotoxin-detection
#13
Jessica M D Machado, Ruben R G Soares, Virginia Chu, João P Conde
The field of microfluidics holds great promise for the development of simple and portable lab-on-a-chip systems. The use of capillarity as a means of fluidic manipulation in lab-on-a-chip systems can potentially reduce the complexity of the instrumentation and allow the development of user-friendly devices for point-of-need analyses. In this work, a PDMS microchannel-based, colorimetric, autonomous capillary chip provides a multiplexed and semi-quantitative immunodetection assay. Results are acquired using a standard smartphone camera and analyzed with a simple gray scale quantification procedure...
July 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28735039/frequency-and-correlates-of-sleep-disturbance-in-methadone-and-buprenorphine-maintained-patients
#14
Kelly E Dunn, Patrick H Finan, D Andrew Tompkins, Eric C Strain
BACKGROUND: Opioid use disorder (OUD) is a significant public health problem, and opioid maintenance treatment (OMT) on methadone or buprenorphine is a common approach. This study characterized sleep impairment in patients maintained on methadone or buprenorphine, and evaluated its association with psychiatric and medical comorbidities. METHODS: Participants (N=185) maintained on methadone (N=125) or buprenorphine (N=60) for OUD completed the Medical Outcomes Study Sleep Scale (MOS) to provide a point-prevalence assessment of sleep impairment...
July 14, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28735008/trehalose-induced-structural-modulation-of-bovine-serum-albumin-at-ambient-temperature
#15
Ahana Das, Pijush Basak, Rudradip Pattanayak, Turban Kar, Rajib Majumder, Debadrita Pal, Anindita Bhattacharya, Maitree Bhattacharyya, Samudra Prosad Banik
Trehalose is a well-known protein stabilizing osmolyte. The present study has been designed to understand the interaction of trehalose with BSA at ambient temperature. Steady state fluorescence and life-time analysis along with CD, DLS and ITC have been employed to show that trehalose causes surface-associated structural perturbation of BSA to promote its compaction. Trehalose at 0.1M concentration resulted in increased solvent exposure of one of the two tryptophans of BSA with a 5nm redshift in emission and enhanced susceptibility to acrylamide quenching with an increase in KSV from 2...
July 19, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28734964/removing-user-fees-for-health-services-a-multi-epistemological-perspective-on-access-inequities-in-senegal
#16
Philipa Mladovsky, Maymouna Ba
Plan Sésame (PS) is a user fee exemption policy launched in 2006 to provide free access to health services to Senegalese citizens aged 60 and over. Analysis of a large household survey evaluating PS echoes findings of other studies showing that user fee removal can be highly inequitable. 34 semi-structured interviews and 19 focus group discussions with people aged 60 and over were conducted in four regions in Senegal (Dakar, Diourbel, Matam and Tambacounda) over a period of six months during 2012. They were analysed to identify underlying causes of exclusion from/inclusion in PS and triangulated with the household survey...
July 6, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28734907/predicting-relapse-in-schizophrenia-is-bdnf-a-plausible-biological-marker
#17
Anilkumar Pillai, Nina R Schooler, Diya Peter, Stephen W Looney, Donald C Goff, Alexander Kopelowicz, John Lauriello, Theo Manschreck, Alan Mendelowitz, Del D Miller, Joanne B Severe, Daniel R Wilson, Donna Ames, Juan Bustillo, John M Kane, Peter F Buckley
Understanding the biological processes that underlie why patients relapse is an issue of fundamental importance to the detection and prevention of relapse in schizophrenia. Brain Derived Neurotrophic Factor (BDNF), a facilitator of brain plasticity, is reduced in patients with schizophrenia. In the present study, we examined whether decreases in plasma BDNF levels could be used as a biological predictor of relapse in schizophrenia. A total of 221 patients were prospectively evaluated for relapse over 30months in the Preventing Relapse in Schizophrenia: Oral Antipsychotics Compared to Injectables: eValuating Efficacy (PROACTIVE) study...
July 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28734906/results-from-15years-of-quality-surveillance-for-a-national-indigenous-point-of-care-testing-program-for-diabetes
#18
Mark Shephard, Anne Shephard, Bridgit McAteer, Tamika Regnier, Kristina Barancek
INTRODUCTION: Diabetes is a major health problem for Australia's Aboriginal and Torres Strait Islander peoples. Point-of-care testing for haemoglobin A1c (HbA1c) has been the cornerstone of a long-standing program (QAAMS) to manage glycaemic control in Indigenous people with diabetes and recently, to diagnose diabetes. METHODS: The QAAMS quality management framework includes monthly testing of quality control (QC) and external quality assurance (EQA) samples. Key performance indicators of quality include imprecision (coefficient of variation [CV%]) and percentage acceptable results...
July 19, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28734868/a-single-and-multiple-dose-study-to-investigate-the-pharmacokinetics-and-pharmacodynamics-of-opicapone-a-novel-comt-inhibitor-in-rat
#19
Daniela Gonçalves, Gilberto Alves, Ana Fortuna, Maria João Bonifácio, Patrício Soares-da-Silva, Amílcar Falcão
Opicapone is a novel catechol-O-methyltransferase (COMT) inhibitor that emerged to fulfil the need of a safer and more efficacious COMT inhibitor. The present study was carried out in order to assess and compare the pharmacokinetics and pharmacodynamics (COMT inhibition) of opicapone after single and multiple oral administrations (30 mg/kg) to Wistar rats. For this purpose, at predefined time points up to 72 h post-dosing, blood, liver and kidneys were collected and, then, the concentrations of opicapone and its active metabolite (BIA 9-1079) were determined in plasma and in liver and kidney tissues, as well as the erythrocyte, liver and kidney COMT activity...
July 19, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28734865/single-factors-alone-can-induce-mesenchymal-like-morphology-but-not-promote-full-emt-in-breast-cancer-cell-lines-with-different-hormone-statuses
#20
Maria K Tveitarås, Inga Reigstad, Lina Leiss, Rolf K Reed, Linda Stuhr
BACKGROUND: Epithelial to mesenchymal transition (EMT) is considered to be important for cancer invasion and metastasis. Tumour hypoxia, in addition to Transforming Growth Factor-β (TGF-β) and Notch, amongst others, have been suggested to be involved in EMT. We therefore investigated if hypoxia, TGF-β1 and the Notch ligand Jagged-1 alone induced morphological changes with corresponding EMT signatures in different epithelial breast cancer cell lines in vitro. Furthermore, we also studied whether or not TGF-β1, or Jagged-1 in combination with hypoxia added any effect on EMT...
July 19, 2017: Experimental Cell Research
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