keyword
MENU ▼
Read by QxMD icon Read
search

Methylene blue

keyword
https://www.readbyqxmd.com/read/28432452/fluorescent-angioscopic-imaging-of-calcium-phosphate-tribasic-precursor-of-hydroxyapatite-the-major-calcium-deposit-in-human-coronary-plaques
#1
Takanobu Kobayashi, Osamu Nakagawa, Seiichiro Shirai, Ei Shimoyama, Nobuyuki Hiruta, Yasumi Uchida
Coronary calcification is a risk factor for ischemic heart disease. Hydroxyapatite that is formed by polymerization from calcium phosphate tribasic (CPT) is the major constituent of coronary calcium deposits. If CPT could be visualized, coronary calcification could be predicted and prevented. We discovered that when CPT and collagen I, the main constituent of collagen fibers, are mixed with lac dye (LD) and then exposed to fluorescent light excited at 345 ± 15 nm and emitted at 420 nm, a purple fluorescence that is characteristic of CPT only is elicited...
April 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28432417/exploring-the-possibility-of-a-retrograde-embolism-pathway-from-the-facial-artery-to-the-ophthalmic-artery-system-in-vivo
#2
Hui Zheng, Lihong Qiu, Zonghui Liu, Yingjun Su, Xinyuan Pan, Sha Liu, Chenggang Yi
BACKGROUND: Blindness caused by soft tissue fillers is an extremely low-probability event, but it results in great concern because of its devastating consequences. Currently, the mechanism of an embolism is usually considered to be an accidental injection of fillers into the blood vessels of the face, such as a facial artery, and then retrograding into the ophthalmic artery system, which causes retinal ischemic necrosis. In addition, previous studies have shown that there are anastomoses between facial arteries and branches of the ophthalmic artery in cadavers...
April 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28429812/hollow-hematite-single-crystals-deposited-with-ultra-thin-al2o3-by-atom-layer-deposition-for-improved-photoelectrochemical-performance
#3
Wei Jiao, Jingrui Wu, Siwen Cui, Ning Wei, Zia Ur Rahman, Meiyan Yu, Shougang Chen, Yangtao Zhou, Daoai Wang
Hematite (α-Fe2O3) is a red material with a band gap of about 2.0 eV, which indicates that it can absorb more solar light. It is a promising photocatalyst applied in many fields. In this paper, α-Fe2O3 single crystal hollow hexagonal bipyramids were synthesized by a simple one-pot hydrothermal method. The morphology and structure of the prepared α-Fe2O3 hollow hexagonal bipyramids were studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The hollow single crystals show a good light absorption and performance in photodegradation of methylene blue (MB)...
April 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28429421/a-boat-shaped-tetracationic-macrocycle-with-a-semiconducting-organic-framework
#4
Minh T Nguyen, Matthew D Krzyaniak, Magdalena Owczarek, Daniel P Ferris, Michael R Wasielewski, J Fraser Stoddart
We report the synthesis of a tetracationic macrocycle which contains two N,N'-bis(methylene)naphthalenediimide units inserted in between the pyridinium rings of the bipyridinium units in cyclobis(paraquat-p-phenylene) (CBPQT(4+) or "blue box") and describe the investigation of its potential use in materials for organic electronics. The incorporation of the two naphthalenediimide (NDI) units into the constitution of CBPQT(4+) , not only changes the supramolecular properties of the tetracation in the solid state, but also has a profound influence on the electrochemical and electronic behavior of the resulting tetracationic macrocycle...
April 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28429192/photoinactivation-effect-of-eosin-methylene-blue-and-chlorophyllin-sodium-copper-against-staphylococcus-aureus-and-escherichia-coli
#5
Cynthia S A Caires, Cassia R B Leal, Carlos A N Ramos, Danielle Bogo, Alessandra R Lima, Eduardo J Arruda, Samuel L Oliveira, Anderson R L Caires, Valter A Nascimento
The use of eosin methylene blue according to Giemsa as photosensitizer is presented for the first time in this paper. The present study evaluated the potential application of chlorophyllin sodium copper salt (CuChlNa) and eosin methylene blue according to Giemsa (EMB) as antimicrobial photosensitizers (aPS) for photodynamic inactivation (PDI) of Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) bacteria. The experiments were performed using S. aureus stain ATCC 25923 and E. coli ATCC 25922 in which five aPS concentrations (0...
April 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28427687/improved-adsorption-performance-of-nanostructured-composite-by-ultrasonic-wave-optimization-through-response-surface-methodology-isotherm-and-kinetic-studies
#6
Mehdi Dastkhoon, Mehrorang Ghaedi, Arash Asfaram, Alireza Goudarzi, Seyyedeh Maryam Mohammadi, Shaobin Wang
In this work, ultrasound-assisted adsorption of an anionic dye, sunset yellow (SY) and cationic dyes, malachite green (MG), methylene blue (MB) and their ternary dye solutions onto Cu@ Mn-ZnS-NPs-AC from water aqueous was optimized by response surface methodology (RSM) using the central composite design (CCD). The adsorbent was characterized using Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX) and EDX mapping images. The effects of various parameters such as pH, sonication time, adsorbent mass and initial concentrations of SY, MG and MB were examined...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427651/ultrasonic-synthesis-of-two-nanostructured-cadmium-ii-coordination-supramolecular-polymers-solvent-influence-luminescence-and-photocatalytic-properties
#7
Shao Yun Hao, Xue Gang Ma, Guang Hua Cui
Two nanoparticles of cadmium(II) coordination polymers (CPs) formulated as [Cd(L)(DCTP)]n (1) and [Cd(L)2(DCTP)·2H2O]n (2) (L=1,2-bis(2-methylbenzimidazol-1-ylmethyl)benzene, H2DCTP=2,5-dichloroterephthalic acid) were prepared by the sonochemical approach in different solvents and characterized by elemental analysis, IR spectra, scanning electron microscopy (SEM), and powder X-ray diffraction. Structural determination reveals that CP 1 displays a 2D four-connected sql net layer, Whilst CP 2 exhibits a 1D "V"-like chain structure...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427637/ultrasound-assisted-degradation-of-organic-dyes-over-magnetic-cofe2o4-zns-core-shell-nanocomposite
#8
Saeed Farhadi, Firouzeh Siadatnasab, Alireza Khataee
Magnetic CoFe2O4@ZnS core-shell nanocomposite was successfully synthesized via one-step hydrothermal decomposition of zinc(II) diethanoldithiocarbamate complex over CoFe2O4 nanoparticles at low temperature of 200°C. The obtained nanocomposite was characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, UV-Vis spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, magnetic measurements, and Brunauere-Emmette-Teller. The results confirmed the formation of CoFe2O4@ZnS nanocomposite with the average crystallite size of 18nm...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427622/efficient-removal-of-crystal-violet-and-methylene-blue-from-wastewater-by-ultrasound-nanoparticles-cu-mof-in-comparison-with-mechanosynthesis-method
#9
Amir Reza Abbasi, Maryam Karimi, Kim Daasbjerg
The present investigation reports the synthesis of CuBTC (BTC=1,3,5-benzenetricarboxylate) metal-organic frameworks (MOFs) under solid-state conditions and ultrasound irradiation. Herein, we study uptake and release properties of crystal violet (CV) and methylene blue (MB) from ultrasound nano-CuBTC MOF in comparison with mechanosynthesis method (bulk structure). The ultrasound-assisted methods give a decrease in the surface area as calculated from the reduced nitrogen adsorption capability. In comparison, the uptake of guest molecules on ultrasound nano-CuBTC is remarkable and clearly exceeds that of bulk structure in the aqueous solution of guests...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427619/application-of-sonochemical-technique-for-sustainable-surface-modification-of-polyester-fibers-resulting-in-durable-nano-sonofinishing
#10
Tina Harifi, Majid Montazer
In this study firstly we aimed at introducing the effects of ultrasound and sonochemistry in surface modification of polyester fibers. For this purpose, surface modification of polyester fibers was achieved by ultrasound, and contact angle and water spreading time measurements were used to confirm the treatment efficiency. Hydroxylation of terephthalate was occurred by hydroxyl radicals formed during water sonolysis, forming functional groups on polyester surface, as confirmed by XPS analysis, improving the wettability...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28420544/disclosing-agents-for-the-intraoperative-identification-of-biofilms-on-orthopedic-implants
#11
Joshua A Parry, Melissa J Karau, Sanjeev Kakar, Arlen D Hanssen, Robin Patel, Matthew P Abdel
BACKGROUND: Disclosing agents are dyes used in dentistry to colorize plaque (biofilm) and may offer a means for intraoperative detection of biofilms on orthopedic implants. Methylene blue (MB) stains biofilm and is safely used in orthopedic applications. Injection of MB into acutely infected prosthetic knees before debridement may enable visualization of biofilm, which could influence treatment decisions. The aims of this study were to determine if MB could be used to visualize biofilm on total knee arthroplasty (TKA) implants and to determine if MB staining has an antimicrobial effect that might interfere with subsequent culture...
March 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28418055/application-of-machine-statistical-learning-artificial-intelligence-and-statistical-experimental-design-for-the-modeling-and-optimization-of-methylene-blue-and-cd-ii-removal-from-a-binary-aqueous-solution-by-natural-walnut-carbon
#12
H Mazaheri, M Ghaedi, M H Ahmadi Azqhandi, A Asfaram
Analytical chemists apply statistical methods for both the validation and prediction of proposed models. Methods are required that are adequate for finding the typical features of a dataset, such as nonlinearities and interactions. Boosted regression trees (BRTs), as an ensemble technique, are fundamentally different to other conventional techniques, with the aim to fit a single parsimonious model. In this work, BRT, artificial neural network (ANN) and response surface methodology (RSM) models have been used for the optimization and/or modeling of the stirring time (min), pH, adsorbent mass (mg) and concentrations of MB and Cd(2+) ions (mg L(-1)) in order to develop respective predictive equations for simulation of the efficiency of MB and Cd(2+) adsorption based on the experimental data set...
April 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28416888/tailoring-pore-size-and-chemical-interior-of-near-1-nm-sized-pores-in-a-nanoporous-polymer-based-on-a-discotic-liquid-crystal
#13
Subham Bhattacharjee, Jody A M Lugger, Rint P Sijbesma
A triazine based disc shaped molecule with two hydrolyzable units, imine and ester groups, was polymerized via acyclic diene metathesis in the columnar hexagonal (Colhex) LC phase. Fabrication of a cationic nanoporous polymer (pore diameter ∼1.3 nm) lined with ammonium groups at the pore surface was achieved by hydrolysis of the imine linkage. Size selective aldehyde uptake by the cationic porous polymer was demonstrated. The anilinium groups in the pores were converted to azide as well as phenyl groups by further chemical treatment, leading to porous polymers with neutral functional groups in the pores...
April 11, 2017: Macromolecules
https://www.readbyqxmd.com/read/28416399/fabrication-of-semisynthetic-collagenic-materials-for-mere-synergistic-adsorption-a-model-approach-of-determining-dye-allocation-by-systematic-characterization-and-optimization
#14
Mrinmoy Karmakar, Manas Mahapatra, Arnab Dutta, Pijush Kanti Chattopadhyay, Nayan Ranjan Singha
Bovine collagen was functionalized by extensive process modifications for fabricating tanned bovine collagen fibers (TBCFs), as a new semisynthetic macro-, meso- and micro- porous adsorbent, of unprecedented physicochemical properties and excellent industrial waste removal efficiency. Mere or interactive effects were rationally understood, via analyzing monomer-dimer equilibrium, H-/J-aggregate formation, H-bonding, metachromasia, dye-dye complex formation etc., through extensive UV-vis analyses, during removal of acidic, like Acid Brown 369 (AB369), Acid Red 131 (AR131) and Acid Blue 113 (AB113) and basic, like Methylene Blue (MB) dyes...
April 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28415938/indocyanine-green-detects-sentinel-lymph-nodes-in-early-breast-cancer
#15
Jun Liu, Linping Huang, Ning Wang, Ping Chen
Objective To explore the clinical value of indocyanine green (ICG) for the fluorescence-guided detection of sentinel lymph nodes (SLNs) during sentinel lymph node biopsy (SLNB) in patients with early breast cancer. Methods This retrospective study included female patients with breast cancer. Patients were administered methylene blue and ICG using standard techniques. All SLNs that were collected during surgery were submitted for pathological examination. SLNs were defined as those that were either fluorescent, blue, fluorescent and blue or palpably suspicious...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28415554/phytosynthesis-of-silver-nanoparticles-using-aqueous-leaf-extracts-of-lippia-citriodora-antimicrobial-larvicidal-and-photocatalytic-evaluations
#16
Elias E Elemike, Damian C Onwudiwe, Anthony C Ekennia, Richard C Ehiri, Nnaemeka J Nnaji
Nanoscience and nanotechnology represent new and enabling platforms that promise to provide broad range of novel and improved technologies for environmental, biological and other scientific applications. This study reports the synthesis of silver nanoparticles mediated by aqueous leaf extract of Lippia citriodora at two different temperatures of 50°C and 90°C. The synthesis of colloidal silver nanoparticles (AgNPs) was monitored by the use of UV-visible spectroscopy at different temperatures and time intervals...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415479/natural-polymeric-microspheres-for-modulated-drug-delivery
#17
Costantino Del Gaudio, Valentina Crognale, Gianpaolo Serino, Pierluca Galloni, Alberto Audenino, Domenico Ribatti, Umberto Morbiducci
Microspheres can be regarded as a suitable platform for the development of ad hoc drug delivery systems, since the targeted release of a therapeutic agent can effectively contribute to support and improve a pharmacological protocol. However, several crucial factors related to the selection of materials, drugs and fabrication techniques should be critically analyzed in order to enhance the expected performance. Dealing with highly compatible materials, e.g. naturally-derived polymers and "green" reagents, can be a valid approach...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415452/an-ultra-sensitive-au-nanoparticles-functionalized-dna-biosensor-for-electrochemical-sensing-of-mercury-ions
#18
Yanyan Zhang, Cong Zhang, Rui Ma, Xin Du, Wenhao Dong, Yuan Chen, Qiang Chen
The present work describes an effective strategy to fabricate a highly sensitive and selective DNA-biosensor for the determination of mercury ions (Hg(2+)). The DNA 1 was modified onto the surface of Au electrode by the interaction between sulfydryl group and Au electrode. DNA probe is complementary with DNA 1. In the presence of Hg(2+), the electrochemical signal increases owing to that Hg(2+)-mediated thymine bases induce the conformation of DNA probe to change from line to hairpin and less DNA probes adsorb into DNA 1...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414946/green-synthesis-of-hybrid-graphene-oxide-microcrystalline-cellulose-aerogels-and-their-use-as-superabsorbents
#19
Xiao Wei, Ting Huang, Jing-Hui Yang, Nan Zhang, Yong Wang, Zuo-Wan Zhou
In this work, we developed a green synthesis method to prepare the hybrid aerogels containing graphene oxide (GO) and microcrystalline cellulose (MCC) using lithium bromide (LiBr) aqueous solution as the solvent, which insured the complete dissolution of MCC. The interaction between GO and MCC was investigated through different methods The results demonstrate that there is a strong interaction between GO and MCC molecules, which promotes the exfoliation of GO in the hybrid aerogels. The hybrid GO/MCC aerogels exhibit typical three dimensional porous structure and the pore morphology can be well adjusted by changing the content of GO...
April 9, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28414171/the-effects-of-water-on-degradation-of-the-zirconia-resin-bond
#20
C Chen, Y Chen, Z Lu, M Qian, H Xie, F R Tay
OBJECTIVES: 10-methacryloyloxydecyldihydrogenphosphate (MDP) containing primers improve bonding of yttria-stabilised tetragonal zirconia (Y-TZP) to methacrylate resins. The present study investigated the role played by water in the deterioration of MDP-mediated zirconia-resin bonds. METHODS: Grit-blasted Y-TZP plates were conditioned with two MDP primers and bonded with resin for shear bond strength (SBS) testing. Additional bonded plates were aged hydrothermally and compared with unaged Y-TZP after 24hours of water-storage or 6 months of water/acid/alkali-storage...
April 13, 2017: Journal of Dentistry
keyword
keyword
63816
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"