keyword
MENU ▼
Read by QxMD icon Read
search

Electronics

keyword
https://www.readbyqxmd.com/read/29793189/effects-of-exposure-to-anti-vaping-public-service-announcements-among-current-smokers-and-dual-users-of-cigarettes-and-electronic-nicotine-delivery-systems
#1
Andy S L Tan, Vaughan W Rees, Justin Rodgers, Emeka Agudile, Natasha A Sokol, Kyeungyeun Yie, Ashley Sanders-Jackson
INTRODUCTION: Anti-vaping public service announcements (PSAs) are intended to discourage vaping or use of electronic nicotine delivery systems (ENDS). However, vaping portrayals in PSAs may have unintended effects if they increase smoking or vaping urges. This study examined benefits and unintended effects of anti-vaping PSAs with vapor portrayals on smoking and vaping-related outcomes. METHODS: Young adult smokers (N = 171) and dual users (N = 122) aged 21-30 years were randomly assigned to view: 1) anti-vaping PSAs with vapor; 2) anti-vaping PSAs without vapor; 3) physical activity PSAs; or 4) anti-smoking PSAs with smoking cues...
May 16, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29793156/mechanical-properties-of-the-human-scalp-in-tension
#2
Lisa Falland-Cheung, Mario Scholze, Pamela F Lozano, Benjamin Ondruschka, Darryl C Tong, Paul A Brunton, J Neil Waddell, Niels Hammer
Mechanical properties of the human scalp have not been investigated to a great extent with limited information available. The purpose of this study was to provide new baseline material data for human scalp tissue of various ages, which can be applied to experimental and constitutive models, such as in the area of impact biomechanics. This study used specimens from the left and right temporal, fronto-parietal and occipital regions of the human scalp. It investigated the tensile behavior of scalp tissue using tissues harvested from unfixed, fresh cadavers...
May 17, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29793145/mechanistic-approach-to-study-conjugation-of-nanoparticles-for-biomedical-applications
#3
Imran Uddin
Interaction of nanoparticles with biological systems turns out to be vibrant for their efficient application in biomedical field. Here, we have shown antibiotic amakicin loaded nanoparticles are responsible for the dual role as reducing and stabilizing the silver nanoparticles without the use of any undesired chemicals. Synthesized nanoparticles are well-dispersed having quasi spherical morphology with an average particle size around 10-11 nm. Crystallinity of nanoparticles was measured using selected area electron diffraction (SAED) and powder XRD analysis which show that particles are perfectly crystalline with cubic phase of geometry...
May 16, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29793144/structural-confirmation-and-spectroscopic-study-of-a-biomolecule-norepinephrine
#4
T Yadav, V Mukherjee
The present work deals with the conformational and vibrational spectroscopic study of an important bio-molecule named norepinephrine in gas phase. The FTIR and FTRaman spectrum of norepinephrine in amorphous form were recorded in wavenumber range 4000-400 cm-1 and 4000-50 cm-1 respectively. We have investigated twenty-seven stable conformational structures of norepinephrine molecule. All the calculations have been done using Density Functional Theory with exchange functional B3LYP incorporated with the 6-31++G(d, p) basis set...
May 21, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29793112/3d-printed-membrane-as-an-alternative-to-amniotic-membrane-for-ocular-surface-conjunctival-defect-reconstruction-an-in-vitro-in-vivo-study
#5
Shima Dehghani, Morteza Rasoulianboroujeni, Hamed Ghasemi, Saeed Heidari Keshel, Zohreh Nozarian, Mohammad Naser Hashemian, Mehran Zarei-Ghanavati, Golshan Latifi, Reza Ghaffari, Zhanfeng Cui, Hua Ye, Lobat Tayebi
BACKGROUND: The aim of this study was to evaluate the surgical handling and clinical applicability of a specific 3D-printed membrane design fabricated using a gelatin, elastin and sodium hyaluronate blend for conjunctival reconstruction and compare it with amniotic membrane (AM), which is normally used in such surgeries. METHODS: 3D printing technique was employed to fabricate the membrane based on gradient design. Prior to printing, rheometry was employed to optimize the ink composition...
May 11, 2018: Biomaterials
https://www.readbyqxmd.com/read/29793074/cross-linked-electrospun-cartilage-acellular-matrix-poly-caprolactone-co-lactide-co-glycolide-nanofiber-as-an-antiadhesive-barrier
#6
Jin Woo Lee, Joon Yeong Park, Seung Hun Park, Min Ju Kim, Bo Ram Song, Hee-Woong Yun, Tae Woong Kang, Hak Soo Choi, Young Jick Kim, Byoung Hyun Min, Moon Suk Kim
In this work, we chose cartilage acellular matrix (CAM) as a promising antiadhesive material because CAM effectively inhibits the formation of blood vessels, and we used electrospinning to prepare antiadhesive barriers. Additionally, we synthesized N-hydroxysuccinimide (NHS)-poly(caprolactone-co-lactide-co-glycolide)-NHS (MP) copolymers (to tune degradation) as a cross-linking agent for CAM. This is the first report on the development of electrospun cross-linked (Cx) CAM/MP (CA/P) nanofiber (NF) (Cx-CA/P-NF) with a tunable degradation period as an antiadhesive barrier...
May 21, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29793070/intradialytic-blood-pressure-pattern-recognition-based-on-density-peak-clustering
#7
Feng Wang, Jing-Yi Zhou, Yu Tian, Yu Wang, Ping Zhang, Jiang-Hua Chen, Jing-Song Li
End-stage renal disease (ESRD) is the final stage of chronic kidney disease (CKD) and requires hemodialysis (HD) for survival. Intradialytic blood pressure (IBP) measurements are necessary to ensure patient safety during HD treatments and have critical clinical and prognostic significance. Studies on IBP measurements, especially IBP patterns, are limited. All related studies have been based on a priori knowledge and artificially classified IBP patterns. Therefore, the results were influenced by subjective concepts...
May 21, 2018: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/29793069/a-2d-tank-test-on-remediation-of-nitrobenzene-contaminated-aquifer-using-in-situ-reactive-zone-with-emulsified-nanoscale-zero-valent-iron
#8
Jun Dong, Yang Dong, Chunyu Wen, Song Gao, Liming Ren, Qiburi Bao
Nitrobenzene (NB) is one of the most challenging pollutants for groundwater remediation due to its great harm and recalcitrance. Emulsified nanoscale zero-valent iron (EZVI) is considered as a promising agent for in-situ remediation of contaminated groundwater for its high reactivity, good durability and low cost. In this paper, 2D tank experiment was conducted to evaluate the effectiveness of enhanced remediation of NB-contaminated groundwater with EZVI. 9 L of EZVI solution was injected into aquifer to establish in-situ reactive zone (IRZ) before 40 d of NB contamination...
May 15, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793066/rapid-and-effective-removal-of-as-iii-and-as-v-using-spore-ti-4-microspheres
#9
Lijuan Lan, Bingjie Zheng, Yao Zhang, Yonggang Hu
Removing arsenic from aquatic environments has become an urgent problem worldwide. In this study, Ti4+ - loaded bacterial spore were adopted as a novel adsorbent (spore@Ti4+ microspheres) for the adsorption efficient removal of arsenite (As(III)) and arsenate (As(V)). The developed adsorbents were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy (XPS). Results indicated that the adsorption kinetics was well described by a pseudo-second-order kinetic model, and the adsorption process rapidly achieved equilibrium within 15 min at pH 7...
May 15, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793064/industrial-waste-as-a-source-of-surface-and-groundwater-pollution-for-more-than-half-a-century-in-a-sector-of-the-r%C3%A3-o-de-la-plata-coastal-plain-argentina
#10
Lucía Santucci, Eleonora Carol, Carolina Tanjal
Environmental liabilities have become one of the most important problems of the last years, especially those of contaminated sites located in urban areas which have been abandoned by pollution intensive industries. Such sites may contain hazardous materials that pose risks to human health and the environment. Industrial waste from the ancient sulfuric acid industry is scattered in a local area at the petrochemical pole in a sector of the Río de la Plata coastal plain. The aim of this work is to define the geochemical processes that determine the alteration of waste in the old sulfuric acid industry (OSAI) area and to study the migration of soluble pollutants to groundwater...
May 14, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793040/quinones-and-nitroaromatic-compounds-as-subversive-substrates-of-staphylococcus-aureus-flavohemoglobin
#11
Myriam Moussaoui, Lina Misevičienė, Žilvinas Anusevičius, Audronė Marozienė, Florence Lederer, Laura Baciou, Narimantas Čėnas
In microorganisms, flavohemoglobins (FHbs) containing FAD and heme (Fe3+ , metHb) convert NO. into nitrate at the expense of NADH and O2 . FHbs contribute to bacterial resistance to nitrosative stress. Therefore, inhibition of FHbs functions may decrease the pathogen virulence. We report here a kinetic study of the reduction of quinones and nitroaromatic compounds by S. aureus FHb. We show that this enzyme rapidly reduces quinones and nitroaromatic compounds in a mixed single- and two-electron pathway. The reactivity of nitroaromatics increased upon an increase in their single-electron reduction potential (E1 7 ), whereas the reactivity of quinones poorly depended on their E1 7 with a strong preference for a 2-hydroxy-1,4-naphthoquinone structure...
May 21, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29793029/oxidative-degradation-of-atenolol-by-heat-activated-persulfate-kinetics-degradation-pathways-and-distribution-of-transformation-intermediates
#12
Dong Miao, Jianbiao Peng, Xiaohuan Zhou, Li Qian, Mengjie Wang, Li Zhai, Shixiang Gao
Atenolol (ATL) has been widely detected in wastewater and aquatic environment. Although satisfactory removal of ATL from wastewater could be achieved, the mineralization ratio is usually low, which may result in the accumulation of its transformation products in the effluent and cause additional ecological risk to the environment. The aim of this study is to explore the effectiveness of heat activated persulfate (PS) in the removal of ATL from wastewater. Influencing factors including temperature, PS dosage, solution pH, existence of NO3 - , Cl- , HCO3 - and Suwannee river fulvic acid (SRFA) were examined...
May 17, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793009/evidence-on-the-measurement-properties-of-health-related-quality-of-life-instruments-is-largely-missing-in-patients-with-low-back-pain-a-systematic-review
#13
REVIEW
Alessandro Chiarotto, Caroline B Terwee, Steven J Kamper, Maarten Boers, Raymond W Ostelo
OBJECTIVE: To synthesize the measurement properties of five health-related quality of life (HRQoL) instruments [Short Form 36 (SF-36), Short Form 12 (SF-12), EuroQol 5D (EQ-5D), Nottingham Health Profile (NHP), PROMIS Global Health (PROMIS-GH-10)] in patients with low back pain (LBP). STUDY DESIGN AND SETTING: Six electronic databases (MEDLINE, EMBASE, CINAHL, PsycINFO, SportDiscus, Google Scholar) were searched (July 2017). Studies assessing any measurement property in non-specific LBP patients were included...
May 21, 2018: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/29792966/one-step-fabrication-of-chitosan-fe-oh-3-beads-for-efficient-adsorption-of-anionic-dyes
#14
XinxinYang, Yumei Li, Hongmei Gao, Chuying Wang, Xiaohuan Zhang, Hongli Zhou
In this study, we reported the one-step synthesis of chitosan-Fe(OH)3 beads without the use of acid solvent, which could be used as effective adsorbents for anionic dyes removal. The preparation process was easy and green. The as-prepared beads were characterized for structural and morphological analysis in detail using several techniques, such as Scanning Electron Microscope, Fourier Transform Infrared Spectroscopy, X-Ray Diffraction, X-ray photoelectron spectroscopy and Thermogravimetric analysis. The content of Fe(OH)3 in chitosan-Fe(OH)3 beads was 54...
May 21, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29792959/fabrication-and-cytotoxicity-assessment-of-cellulose-nanofibrils-using-bassia-eriophora-biomass
#15
Jegan Athinarayanan, Vaiyapuri Subbarayan Periasamy, Ali A Alshatwi
Cellulose nanofibrils (CNs) are eco-friendly, biodegradable, biocompatible, renewable, cost-effective, and possess excellent mechanical properties. We fabricated CNs from Bassia eriophora biomass, and the structure and morphology were investigated by transmission electron microscopy that revealed 2-6 μm long fibrillated structures with diameters of 15-40 nm. CNs biocompatibility was assessed using in vitro based assays, including cell viability assay, AO/EB staining, Hoechst staining, JC-1 staining, and gene expression analysis...
May 21, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29792890/the-visual-cortex-and-visual-cognition-in-huntington-s-disease-an-overview-of-current-literature
#16
REVIEW
Emma M Coppen, Jeroen van der Grond, Ellen P Hart, Egbert A J F Lakke, Raymund A C Roos
The processing of visual stimuli from retina to higher cortical areas has been extensively studied in the human brain. In Huntington's disease (HD), an inherited neurodegenerative disorder, it is suggested that visual processing deficits are present in addition to more characteristic signs such as motor disturbances, cognitive dysfunction, and behavioral changes. Visual deficits are clinically important because they influence overall cognitive performance and have implications for daily functioning. The aim of this review is to summarize current literature on clinical visual deficits, visual cognitive impairment, and underlying visual cortical changes in HD patients...
May 21, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29792886/t-grasp-a-targeted-grasp-for-assessing-neuronal-connectivity
#17
Harold K Shearin, Casey D Quinn, Robert D Mackin, Ian S Macdonald, R Steven Stowers
BACKGROUND: Understanding how behaviors are generated by neural circuits requires knowledge of the synaptic connections between the composite neurons. Methods for mapping synaptic connections, such as electron microscopy and paired recordings, are labor intensive and alternative methods are thus desirable. NEW METHOD: Development of a targeted GFP Reconstitution Across Synaptic Partners(GRASP) method, t-GRASP, for assessing neural connectivity is described. RESULTS: Numerous different pre-synaptic and post-synaptic/dendritic proteins were tested for enhancing the specificity of GRASP signal to synaptic regions...
May 21, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29792756/uterine-or-paracervical-lidocaine-application-for-pain-control-during-intrauterine-contraceptive-device-insertion-a-meta-analysis-of-randomised-controlled-trials
#18
Faustino R Perez-Lopez, Samuel J Martinez-Dominguez, Gonzalo R Perez-Roncero, Adrian V Hernandez
OBJECTIVE: Systematic review and meta-analysis to assess the effects of uterine or paracervical lidocaine application on pain control during IUD insertion. METHODS: PubMed and five other electronic research databases were searched through 15 November 2017 for RCTs comparing lidocaine treatment vs. a control (placebo or no-intervention) to prevent pain during IUD insertion. Searched terms included 'IUD insertion', 'lidocaine' and 'randomised controlled trial'. RCTs evaluating lidocaine treatment before IUD insertion without restriction of language, age and IUD type...
May 24, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29792720/-experimental-processing-of-corrosion-casts-of-large-animal-organs
#19
R Pálek, V Liška, L Eberlová, H Mírka, M Svoboda, S Haviar, M Emingr, O Brzoň, P Mik, V Třeška
INTRODUCTION: Corrosion casts (CCs) are used for the visualization and assessment of hollow structures. CCs with filled capillaries enable (with the help of imaging methods) to obtain data for mathematical organ perfusion modelling. As the processing is more difficult in case of organs with greater volume of the vasculature, mainly organs from small animals have been cast up to now. The aim of this study was to optimize the protocol of corrosion casting of different organs of pig. Porcine organs are relatively easily accessible and frequently used in experimental medicine...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29792704/double-hydrogen-atom-exchange-reactions-of-hx-x-f-cl-br-i-with-ho2
#20
Rex T Skodje, Jonathan R Church
A novel double hydrogen atom exchange process, HX+H'O2H'X+HO2 for the halogen series X=F, Cl, Br, and I, is identified using theoretical methods. These concerted reactions are mediated through a stabilized five-member planar ring transition state structure. The transition state barrier for the double exchange process is found to be significantly lower than that for the abstraction reaction of a single hydrogen atom, . Density functional theory employing the M11 exchange functional is used to compute parameters of the potential energy surface and the rate coefficients are obtained using transition state theory with small curvature tunneling...
May 24, 2018: Journal of Physical Chemistry. A
keyword
keyword
103571
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"