keyword
MENU ▼
Read by QxMD icon Read
search

Enhancement

keyword
https://www.readbyqxmd.com/read/27914369/dna-tetrahedral-scaffolds-based-platform-for-the-construction-of-electrochemiluminescence-biosensor
#1
Qiu-Mei Feng, Zhen Zhou, Mei-Xing Li, Wei Zhao, Jing-Juan Xu, Hong-Yuan Chen
Proximal metallic nanoparticles (NPs) could quench the electrochemiluminescence (ECL) emission of semiconductor quantum dots (QDs) due to Förster energy transfer (FRET), but at a certain distance, the coupling of light-emission with surface plasmon resonance (SPR) result in enhanced ECL. Thus, the modification strategies and distances control between QDs and metallic NPs are critical for the ECL intensity of QDs. In this strategy, a SPR enhanced ECL sensor based on DNA tetrahedral scaffolds modified platform was reported for the detection of telomerase activity...
November 27, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27914367/single-wall-carbon-nanotube-electrode-system-capable-of-quantitative-detection-of-cd4-t-cells
#2
Joonhyub Kim, Gayoung Park, Seoho Lee, Suk-Won Hwang, Namki Min, Kyung-Mi Lee
Development of CNT-based CD4(+) T cell imunosensors remains in its infancy due to the poor immobilization efficiency, lack of reproducibility, and difficulty in providing linear quantification. Here, we developed a fully-integrated single wall carbon nanotube (SWCNT)-based immunosensor capable of selective capture and linear quantification of CD4(+) T cells with greater dynamic range. By employing repeated two-step oxygen (O2) plasma treatment processes with 35 days of recovery periods, we achieved the enhanced functionalization of the CNT surface and the removal of the byproduct of spray-coated SWCNTs that hinders charge transfer and stable CD4(+) T cell sensing...
November 25, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27914356/can-podcasts-for-assessment-guidance-and-feedback-promote-self-efficacy-among-undergraduate-nursing-students-a-qualitative-study
#3
Linda C McSwiggan, Maureen Campbell
BACKGROUND: Improving assessment guidance and feedback for students has become an international priority within higher education. Podcasts have been proposed as a tool for enhancing teaching, learning and assessment. However, a stronger theory-based rationale for using podcasts, particularly as a means of facilitating assessment guidance and feedback, is required. OBJECTIVE: To explore students' experiences of using podcasts for assessment guidance and feedback...
November 27, 2016: Nurse Education Today
https://www.readbyqxmd.com/read/27914350/phosphorus-flows-in-a-peri-urban-region-with-intensive-food-production-a-case-study
#4
S Bittman, S C Sheppard, D Poon, D E Hunt
Excess phosphorus (P) in peri-urban regions is an emerging issue, whereas there is global depletion of quality mined supplies of P. The flow of P across the landscape leading to regional surpluses and deficits is not well understood. We computed a regional P budget with internal P flows in a fairly discreet peri-urban region (Lower Fraser Valley, BC) with closely juxtaposed agricultural and non-agricultural urban ecosystems, in order to clarify the relationship between food production, food consumption and other activities involving use of P (e...
November 30, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27914349/effects-of-clay-minerals-hydroxides-and-timing-of-dissolved-organic-matter-addition-on-the-competitive-sorption-of-copper-nickel-and-zinc-a-column-experiment
#5
Yasser Refaey, Boris Jansen, John R Parsons, Pim de Voogt, Simone Bagnis, Adriaan Markus, Abdel-Hamid El-Shater, Abdel-Aziz El-Haddad, Karsten Kalbitz
Infiltration of heavy metal (HM) polluted wastewater can seriously compromise soil and groundwater quality. Interactions between mineral soil components (e.g. clay minerals) and dissolved organic matter (DOM) play a crucial role in determining HM mobility in soils. In this study, the influence of the timing of addition of DOM, i.e. concurrent with or prior to HMs, on HM mobility was explored in a set of continuous flow column experiments using well defined natural soil samples amended with goethite, birnessite and/or smectite...
November 30, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27914347/differential-crosstalk-between-global-dna-methylation-and-metabolomics-associated-with-cell-type-specific-stress-response-by-pristine-and-functionalized-mwcnt
#6
Nivedita Chatterjee, Jisu Yang, Dahye Yoon, Suhkmann Kim, Sang-Woo Joo, Jinhee Choi
The present study endeavored to evaluate the comprehensive mechanisms of MWCNT-induced toxicity with particular emphasis on understanding cell specificity in relation to surface functionalization of MWCNT. Following treatment with differentially functionalized (hydroxylation/carboxylation) MWCNT on human bronchial epithelial (BEAS-2B) and human hepatoma (HepG2) cell lines, intracellular uptake, various toxicological end points, global metabolomics profiling and DNA methylation were evaluated. Herein, the comparative in vitro studies ascertained that surface functionalization diminished the toxic potentiality of MWCNT in respect of their pristine counterpart...
November 9, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914343/fluorescence-and-drug-loading-properties-of-znse-mn-zns-paclitaxel-sio2-nanocapsules-templated-by-f127-micelles
#7
Tingting Zhao, Xin Liu, Yuebin Li, Mingguang Zhang, Jian He, Xuewen Zhang, Hui Liu, Xingguo Wang, Haoshuang Gu
Hydrophobic ZnSe:Mn/ZnS core-shell fluorescence quantum dots (QDs) and anticancer drug paclitaxel (PTX) have been co-loaded into folate conjugated hybrid silica nanocapsules via F127 micelles based soft-template method in a mild aqueous environment at room temperature. The encapsulation of QDs shows a F127: QDs mass ratio dependent behavior, which impact much on the morphology and optical properties of composite nanocapsules. These as prepared composite nanocapsules also exhibit good photoluminescence stability under the temperature ranges from 19°C to 49°C...
November 23, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914333/nano-zinc-oxide-incorporated-graphene-oxide-nanocellulose-composite-for-the-adsorption-and-photo-catalytic-degradation-of-ciprofloxacin-hydrochloride-from-aqueous-solutions
#8
T S Anirudhan, J R Deepa
Purpose of this study is to report the synthetic procedure of a novel photo catalyst, nano zinc oxide incorporated graphene oxide/nanocellulose (ZnO-GO/NC) for the effective adsorption and subsequent photo degradation of ciprofloxacin (CF), an antibiotic widely used in the poultry. Self cleaning property in cellulose was achieved by introducing a nano zinc oxide incorporated graphene oxide into nanocellulose (NC) matrix. By incorporating nano zinc oxide (ZnO) in graphene oxide (GO), band gap could be tuned to 2...
November 17, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914330/synergistic-effect-of-p-n-heterojunction-supporting-and-zeolite-nanoparticles-in-enhanced-photocatalytic-activity-of-nio-and-sno2
#9
Hadis Derikvandi, Alireza Nezamzadeh-Ejhieh
Increased photocatalytic activity of NiO and SnO2 was achieved by coupling and supporting of them onto clinoptilolite nanoparticles (NC) via calcination of Ni(II)-Sn(IV) - exchanged NC in photocatalytic degradation of metronidazole (MZ) aqueous solution. XRD, XRF, FTIR, SEM, X-ray mapping, DRS, TEM, BET Cyclic voltammetry and electrochemical impedance spectroscopy techniques (EIS) were used for characterization of samples. Red shift occurred in bang gap energies of the coupled semiconductors with respect to monocomponent one...
November 21, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914325/fabrication-of-metronidazole-loaded-poly-%C3%AE%C2%B5-caprolactone-zein-core-shell-nanofiber-membranes-via-coaxial-electrospinning-for-guided-tissue-regeneration
#10
Min He, Huiyi Jiang, Rui Wang, Yi Xie, Changsheng Zhao
To develop a biologically mimetic guided tissue regeneration (GTR) membrane with localized sustained drug release function to prevent infection, coaxial electrospinning technique was conducted to fabricate metronidazole (MNA)-loaded poly (ε-caprolactone) (PCL)/zein core/shell nanofibers. The nanofibers displayed a uniform bead-free round morphology as observed by scanning electron microscopy (SEM), and a core/shell structure as confirmed by transmission electron microscopy (TEM). X-ray diffraction (XRD) and differential scanning calorimetry (DSC) characterizations demonstrated that the MNA was well dispersed in the nanofibers matrix...
November 19, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914320/biochemical-precursor-effects-on-the-fatty-acid-production-in-cell-suspension-cultures-of-theobroma-cacao-l
#11
O Parra, A M Gallego, A Urrea, L F Rojas, C Correa, L Atehortúa
Cocoa butter (CB) is composed of 96% palmitic, stearic, oleic, linoleic and linolenic fatty acids that are responsible for the hardness, texture and fusion properties of chocolate. Through in vitro plant cell culture it is possible to modify CB lipid profiles and to study the fatty acid biosynthesis pathway on a subcellular level, evaluating fundamental aspects to enhance in vitro fatty acid production in a specific and controlled way. In this research, culture media was supplemented with acetate, biotin, pyruvate, bicarbonate and glycerol at three different concentrations and the effects on the biomass production (g/L), cell viability, and fatty acids profile and production was evaluated in in vitro cell suspensions culture...
November 25, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27914317/the-disgust-related-images-dirti-database-validation-of-a-novel-standardized-set-of-disgust-pictures
#12
Anke Haberkamp, Julia Anna Glombiewski, Filipp Schmidt, Antonia Barke
Selecting appropriate stimuli is a major challenge of affective research. Although several standardized databases for affective pictures exist, none of them focus on discrete emotions such as disgust. Validated pictures inducing discrete emotions are still limited, and this presents a problem for researchers interested in studying different facets of disgust. In this paper, we introduce the DIsgust-RelaTed-Images (DIRTI) picture set. The set consists of 240 disgust-inducing pictures divided into six categories (food, animals, body products, injuries/infections, death, and hygiene)...
November 23, 2016: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/27914267/intein-mediated-site-specific-synthesis-of-tumor-targeting-protein-delivery-system-turning-peg-dilemma-into-prodrug-like-feature
#13
Yingzhi Chen, Meng Zhang, Hongyue Jin, Yisi Tang, Huiyuan Wang, Qin Xu, Yaping Li, Feng Li, Yongzhuo Huang
Poor tumor-targeted and cytoplasmic delivery is a bottleneck for protein toxin-based cancer therapy. Ideally, a protein toxin drug should remain stealthy in circulation for prolonged half-life and reduced side toxicity, but turn activated at tumor. PEGylation is a solution to achieve the first goal, but creates a hurdle for the second because PEG rejects interaction between the drugs and tumor cells therein. Such PEG dilemma is an unsolved problem in protein delivery. Herein proposed is a concept of turning PEG dilemma into prodrug-like feature...
November 27, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914251/improved-rhbmp-2-function-on-mbg-incorporated-tio2-nanorod-films
#14
Fei Ge, Mengfei Yu, Cuixia Yu, Jun Lin, Wenjian Weng, Kui Cheng, Huiming Wang
In the process of biomaterials mediated bone regeneration, rhBMP-2 delivery at efficient dose in sustained kinetics is crucial for promoting cell osteogenic differentiation. Meanwhile, surface morphology of the biomaterials could regulate cellular responses as well as strengthen the rhBMP-2 interaction with cells for better bone induction. Herein, TiO2 nanorod films with varied mesoporous bioactive glass (MBG) incorporation amount were designed to strengthen the efficacy of rhBMP-2, basing on optimized loading/release behaviors and surface nanostructure cooperatively...
November 24, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27914226/drinking-motives-and-alcohol-outcome-expectancies-as-mediators-of-the-association-between-negative-urgency-and-alcohol-consumption
#15
Amber M Anthenien, Jordanna Lembo, Clayton Neighbors
OBJECTIVE: To determine whether the effects of negative urgency, a unique facet of impulsivity marked by engaging in potentially unhealthy and rash behaviors in order to cope with anxiety or negative moods, on drinking behavior can be explained by positive and negative alcohol outcome expectancies and specific drinking motives (i.e., coping and enhancement). METHODS: College students (N=194) completed web-based surveys in exchange for course credit. Students completed measures of negative urgency, comprehensive effects of alcohol, drinking motives, and alcohol use behaviors...
November 15, 2016: Addictive Behaviors
https://www.readbyqxmd.com/read/27914202/probiotic-roles-of-lactobacillus-spp-in-swine-insights-from-gut-microbiota
#16
REVIEW
Valerie Diane V Valeriano, Marilen P Balolong, Dae-Kyung Kang
The use of lactobacilli as probiotics in swine has been gaining attention due to their ability to improve growth performance and carcass quality, prevent gastrointestinal infection, and most importantly, their 'generally recognised as safe' status. Previous studies support the potential of lactobacilli to regulate host immune systems, enhance gut metabolic capacities, and maintain balance in the gut microbiota. Research on swine gut microbiota has revealed complex gut microbial community structure and showed the importance of Lactobacillus to the host's health...
December 3, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27914197/young-adult-born-neurons-enhance-hippocampal-dependent-performance-via-influences-on-bilateral-networks
#17
Jia-Min Zhuo, Hua-An Tseng, Mitul Desai, Mark E Bucklin, Ali I Mohammed, Nick Tm Robinson, Edward S Boyden, Lara M Rangel, Alan P Jasanoff, Howard J Gritton, Xue Han
Adult neurogenesis supports performance in many hippocampal dependent tasks. Considering the small number of adult-born neurons generated at any given time, it is surprising that this sparse population of cells can substantially influence behavior. Recent studies have demonstrated that heightened excitability and plasticity may be critical for the contribution of young adult-born cells for certain tasks. What is not well understood is how these unique biophysical and synaptic properties may translate to networks that support behavioral function...
December 3, 2016: ELife
https://www.readbyqxmd.com/read/27914187/enhanced-nutrition-improves-growth-and-increases-blood-adiponectin-concentrations-in-very-low-birth-weight-infants
#18
Elin W Blakstad, Sissel J Moltu, Britt Nakstad, Marit B Veierød, Kenneth Strømmen, Pétur B Júlíusson, Astrid N Almaas, Arild E Rønnestad, Kristin Brække, Christian A Drevon, Per O Iversen
BACKGROUND: Adequate nutrient supply is essential for optimal postnatal growth in very low birth weight (VLBW, birth weight<1,500 g) infants. Early growth may influence the risk of metabolic syndrome later in life. OBJECTIVE: To evaluate growth and blood metabolic markers (adiponectin, leptin, and insulin-like growth factor-1 (IGF-1)) in VLBW infants participating in a randomized nutritional intervention study. DESIGN: Fifty VLBW infants were randomized to an enhanced nutrient supply or a standard nutrient supply...
2016: Food & Nutrition Research
https://www.readbyqxmd.com/read/27914180/burned-out-testis-tumors-in-asymptomatic-infertile-men-multiparametric-sonography-and-mri-findings
#19
Laurence Rocher, Ludivine Glas, Marie France Bellin, Sophie Ferlicot, Vincent Izard, Gerard Benoit, Laurence Albiges, Karim Fizazi, Jean-Michel Correas
Multiparametric testicular ultrasound and magnetic resonance imaging (MRI) findings were analyzed in a series of 10 infertile asymptomatic men presenting with pathologically confirmed burned-out testicular tumors. Color/power Doppler ultrasound (CDUS), shear wave elastography (SWE), contrast-enhanced ultrasonography (CEUS), and MRI were performed on 10, 5, 6, and 7 patients, respectively. All lesions appeared as a hypoechoic and hypovascular nodular area at CDUS, SWE, CEUS CDUS, and CEUS (if performed). Shear wave elastography showed a stiffer nodular area compared with the surrounding/contralateral tissues (13 versus 2 kPa); MRI revealed a well-delineated nodular area in hypointense signal on T2, a high apparent diffusion coefficient value, and a lack of enhancement...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914172/cryotherapy-of-renal-lesions-enhancement-on-contrast-enhanced-sonography-on-postoperative-day-1-does-not-imply-viable-tissue-persistence
#20
Michele Bertolotto, Salvatore Siracusano, Calogero Cicero, Mariano Iannelli, Tommaso Silvestri, Antonio Celia, Alessandro Guarise, Fulvio Stacul
OBJECTIVES: To investigate whether persistent enhancement detected on contrast-enhanced sonography at postoperative day 1 (early contrast-enhanced sonography) after cryoablation of renal tumors implies the presence of residual viable tumor tissue, defined as residual enhancing tissue on reference imaging (computed tomography or magnetic resonance imaging) performed 6 months after the procedure. METHODS: Seventy-four patients with percutaneous cryoablation of renal tumors had early contrast-enhanced sonography from November 2011 to August 2015...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
keyword
keyword
49496
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"