Steerable balloon dilatation catheter assembly having dye injection and pressure measurement capabilities and comprising an elongate flexible tubular member (12) having first and second lumens (13, 16) extending therethrough and a balloon (17) carried by the distal portion of the tubular member and having its interior in communication with the second lumen. A guide wire (21) extends through the first lumen and has a coil (23) carried by the distal portion thereof and extending beyond the distal extremity of the tubular member. A device (42) is coupled to the guide wire facilitating at least limited rotation of the distal extemity of the guide wire. A first fitting (32) is coupled to the second lumen and is adapted to receive a liquid for inflating and deflating the balloon. A second fitting (38)is in communication with the first lumen. The first lumen and the guide wire are sized so that dye injections and/or pressure measurements can be made through the second fitting.
Steerable balloon dilatation catheter assembly having dye injection and pressure measurement capabilities and comprising an elongate flexible tubular member having first and second lumens extending therethrough and a balloon carried by the distal portion of the tubular member and having its interior in communication with the second lumen. A guide wire extends through the first lumen and has a coil carried by the distal portion thereof and extending beyond the distal extremity of the tubular member. A device is coupled to the guide wire facilitating at least limited rotation of the distal extremity of the guide wire. A first fitting is coupled to the second lumen and is adapted to receive a liquid for inflating and deflating the balloon. A second fitting is in communication with the first lumen. The first lumen and the guide wire being sized so that dye injections and/or pressure measurements can be made through the second fitting.
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... ,Cy5 Post-Labeling Reactive Dye Pack, 12 x Cy5. The only reactive CyDye fluors specifically optimized for microarray labeling.Higher reactivity Cy3 and Cy5 dyes: 40000 pmol reactive dye per vial, at > 75% reactive dye content.Ready to use, individually dispensed, and packed in foil packs for protect,biological,biology supply,biology supplies,biology product
Amine‐reactive dyes, also known as LIVE/DEAD fixable dead cell stains, are a class of viability dyes suitable for identifying dead cells in samples that will be fixed
Permanent, colorfast, and very washable. You can easily create a palette of brilliant colors ranging from light pastels to deep, vibrant hues.
In contrast to indocyanine green (ICG) blood clearance, the plasma disappearance rate (PDR) of ICG does not require absolute ICG blood concentrations and today can be assessed transcutaneously. In thi
Freshwater is an increasingly scarce resource that is extensively used in textile wet‐processing. In seeking to identify alternative low freshwater‐usage coloration technology, this study examined the potential use of seawater (SEAW) as the dyeing medium for wool coloration using a range of reactive dyes. Initially, the dyeing behaviour of the wool fabric in simulated seawater (SSW) was compared with conventional dyeing from distilled water (DW) using α‐bromoacrylamide‐based Lanasol dyes and sulphatoethyl sulphone‐based Remazol dyes. These preliminary studies demonstrated that comparable coloration could be achieved in the SSW medium based on an assessment of the dye exhaustion, dye fixation, colour yield and levelness. Subsequent dyeing studies of wool using Mauritian seawater with both the Lanasol and Remazol reactive dyes confirmed that, based on the dye exhaustion, dye fixation, colour yield and levelness, comparable coloration could be achieved, highlighting the possibility of ...
To quantitate the dilution curves, standard dilutions of Indocyanine Green in whole blood are made as follows: It is strongly recommended that the same dye that was used for the injections be used in the preparation of these standard dilutions. The most concentrated dye solution is made by accurately diluting 1 mL of the 5-mg/mL dye with 7 mL of distilled water. This concentration is then successively halved by diluting 4 mL of the previous concentration with 4 mL of distilled water. (If a 2.5 mg/mL concentration was used for the dilution curves, 1 mL of the 2.5 mg/mL dye is added to 3 mL of distilled water lo make the most concentrated "standard solution. This concentration is then successively halved by diluting 2. mL of the previous concentration with 2 mL of distilled water.) Then 0.2-mL portions (accurately measured from a calibrated syringe) of these dye solutions are added to 5-mL aliquots of the subjects blood, giving final concentrations of the dye in blood beginning with 24 mg/liter, ...
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Penzkofer, Alfons und Leupacher, W. (1984) Third Order Nonlinear Susceptibilities of Dye Solutions Determined by Non-Phasematched Third Harmonic Generation. In: Auston, David H. und Eisenthal, K. B., (eds.) Ultrafast phenomena IV: proceedings of the Fourth International Conference, Monterey, California, June 11 - 15, 1984. Springer series in chemical physics, 38. Springer, Berlin, S. 190-192. ISBN 3-540-13834-X; 0-387-13834-X. Im Publikationsserver gibt es leider keinen Volltext zu diesem Eintrag. ...
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7). Eq (7) can be used to determine the amount of biomass required for any given initial dye concentration and for any desired amount of dye removal for any multistage system.. For a two stage batch sorption system, the design parameters are now explained. The design objective is to treat 50 L of basic red 9 solution of initial dye concentration 150 mg/L in the first stage. A series of equilibrium dye concentration from 140 mg/L to 10 mg/L in 10 decrements was considered in stage one of a two stage sorption system. The design plot which explains the amount of biomass needed in different two stage sorption systems are shown in Figure 3. The x-axis in Fig 3 represents the equilibrium concentration in the first stage of the two stage sorption system based on 10 mg/L of equilibrium dye concentration difference. In the sorption system number one, the design the objective is to reduce the initial dye concentration from 150 mg/L to 140 mg/L. Similarly in the sorption system 2, 3, 4, 5, 6, 7, 8, 9, 10, ...
A dyed substrate having at least one dyed surface. At least one dye solution is disposed across at least a portion of the surface in combination with a migration promoting composition and/or a migration limiting composition. The migration promoting composition and/or migration limiting composition adjusts the migration of at least a portion of the dye solution across the substrate in a controlled manner. Dye migration may be arrested by the application of RF (radio frequency) energy as a step in dye fixation. A process for forming the dyed substrate is also provided.
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Procion MX fiber reactive dyes are especially made for low temperature immersion techniques and will dye all cellulose fibers (including cotton, linen, rayon, ramie, hemp, jute, wood, paper, and basketry materials) to full rich shades of color. Silk will dye to medium shades. 30 g (approx 1 oz) of dye will colour 500 g
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last year i had to get an MRI scan. they inject you with dye which is actually gadolinium a heavy metal in solution. i had a rash and intense itching all over for weeks. even now, my forearms and hands still itch so it is not out of my system yet. i still dont know if i may come down with an even more extreme reaction that only happens to a minority of people, that their skin becomes real hard, b/c it takes months for that to finally start to develop, and if its doing all that to me, who knows what its doing to me internally. so im not out of the woods yet ...
Paul Johnson, England Leaving and Returning Pop-up book with Waterford paper dyed with reactive dyes and pen work overlays. 30 x 56 x 4 cm (fully extended) 2005 COLOPHON BOOK ARTS SUPPLY AWARD
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022m. A colour camera recorded depth integrated images at 25 frames see more per second which were then time averaged over a period of 7 s. Fig. 4a shows an image of a jet containing passive dye and provides information about the depth integrated and time averaged dye concentration CDI(x,y)CDI(x,y). An inverse Abel transformation (Abel, 1826) was performed to reconstruct the axisymmetric form of the dye concentration through the jet using equation(17) C‾(x,z)=-1π∫r∞dC‾DIdmdmm2-r2.Fig. 4b shows the reconstructed concentration profile.. It has been known that the time averaged concentration field C‾ across the jet is approximately Gaussian (e.g. Morton et al. (1956), etc.) i.e. equation(18) C‾=C‾01+(2αy/b0)exp-λx2b2. The dilution at any location in the jet D(x,y)D(x,y) can be estimate by relating the centre line concentration C to the value at the nozzle C0C0 and radius b to the value that captures 95% of the jet fluid giving λ=log(1/0.05)≃3λ=log(1/0.05)≃3. This relationship ...
Austin Radiological Association Patient History/Contrast Form HAVE YOU HAD ANY PREVIOUS IMAGING STUDIES OF THE BODY PART BEING EXAMINED TODAY? HAVE YOU EVER HAD? Previous imaging that required an injection of contrast media/dye? If yes, did you have a reaction or experience any difficulties due to any imaging contrast/dye injection? Surgery to the part of your body being exami ...
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Blue MGN is a dichloro-triazine reactive dye. This product is highly reactive and therefore does not require strong conditioning for fixation with cellu...
This video demonstrates trypsinizing and cell counting using trypan blue and the Bright-Line Hemocytometer for the purpose of determining viability in mammalian cell subculture.
An object of the present invention is to provide a dye-sensitized solar cell comprising a solid electrolyte and having excellent thermostability, which has the excellent feature of retaining liquid so as to prevent an electrolyte solution from being exuded even under high temperature or pressurized conditions, and a dye-sensitized solar cell module using the same. Such dye-sensitized solar cell comprises: an electrode base material 10; a porous semiconductor layer 20 formed on the electrode base material 10 having a porous surface carrying a sensitized dye; a counter electrode 40, which is disposed so as to face the porous semiconductor layer 20; and an electrolyte layer 30 comprising a redox pair and cationic cellulose or a derivative thereof, which is formed between the electrode base material 10 and the counter electrode 40.
The dye-sensitized solar cell, developed in the 1990s, is a non-conventional solar technology that has attracted much attention owing to its stability, low cost, and device efficiency. Power-conversion efficiencies of over 11 % have been achieved for devices that contain liquid electrolytes, whereas solid-state devices that do not require a liquid electrolyte display an overall efficiency of 5 %. Improvement of the efficiency of solid-state dye-sensitized solar cells requires optimization of their various components, such as the hole-transport material, sensitizer, mesoporous TiO2 film, and the blocking layer. This Minireview highlights the current state of the art and future directions of solid-state dye-sensitized solar cell technology. ...
Traditionally, Pt prepared by hydrolysis was used as the counter electrode of dye-sensitized solar cells. But the hydrolysis requires a high-temperature process, so that it is not suitable for flexible substrates like plastics. In addition, noble Pt remarkably increases the cost of dye-sensitized solar cells. Here, we report three types of nanostuctured materials as the counter electrode of dye-sensitized solar cells, including nanostrutured Pt by polyol reduction of Pt precursors, nanocomposites and nanotube films.
Dye-sensitized solar cells based on iodide/triiodide (I−/I3−) electrolytes are viable low-cost alternatives to conventional silicon solar cells. However, as well as providing record efficiencies of up to 12.0%, the use of I−/I3− in such solar cells also brings about certain limitations that stem from its corrosive nature and complex two-electron redox chemistry. Alternative redox mediators have been investigated, but these generally fall well short of matching the performance of conventional I−/I3− electrolytes. Here, we report energy conversion efficiencies of 7.5% (simulated sunlight, AM1.5, 1,000 W m−2) for dye-sensitized solar cells combining the archetypal ferrocene/ferrocenium (Fc/Fc+) single-electron redox couple with a novel metal-free organic donor-acceptor sensitizer (Carbz-PAHTDTT). These Fc/Fc+-based devices exceed the efficiency achieved for devices prepared using I−/I3− electrolytes under comparable conditions, revealing the great potential of ferrocene-based electrolytes
Panchromatic response is essential to increase the light-harvesting efficiency in solar conversion systems. Herein we show increased light harvesting from using multiple energy relay dyes inside dye-sensitized solar cells. Additional photoresponse from 400-590 nm matching the optical window of the zinc phthalocyanine sensitizer was observed due to Forster resonance energy transfer (FRET) from the two energy relay dyes to the sensitizing dye. The complementary absorption spectra of the energy relay dyes and high excitation transfer efficiencies result in a 35% increase in photovoltaic performance.. Keywords: dyes/pigments ; dye-sensitized solar cells ; Fret ; photochemistry ; photovoltaics ; Restricted Geometries ; Rhodamine-B ; Efficiency ; Dcm. ...
We report a high molar extinction coefficient heteroleptic polypyridyl ruthenium sensitizer, featuring an electron-rich 3,4-ethylenedioxythiophene unit in its ancillary ligand. A nanocrystalline titania film stained with this sensitizer shows an improved optical absorption, which is highly desirable for practical dye-sensitized solar cells with a thin photoactive layer, facilitating the efficient charge collection. In conjunction with low-volatility and solvent-free electrolytes, we achieved 9.6-10.0% and 8.5-9.1% efficiencies under the air-mass 1.5 global solar illumination. These dye-sensitized solar cells retain over 90% of the initial performance after 1000 h full sunlight soaking at 60 degrees C. Shi, Dong; Pootrakulchote, Nuttapol; Li, Renzhi; Guo, Jin; Wang, Yuan; Zakeeruddin, Shaik M.; Graetzel, Michael; Wang, Peng
For the first time, nonstoichiometric WO2.72 was used as a counter electrode (CE) in dye-sensitized solar cells (DSSCs). Oxygen-vacancy-rich WO2.72 nanorod bundles with notable catalytic activity for triiodide and thiolate reduction were prepared in this study. The photovoltaic parameters of dye-sensitized s
The replacement of oxide semiconducting TiO2 nano particles with one dimensional TiO2 nanotubes (TNTs) has been used for improving the electron transport in the dye-sensitized solar cells (DSSCs). Although use of one dimensional structure provides the enhanced photoelectrical performance, it tends to reduce the adsorption of dye on the TiO2 surface due to decrease of surface area. To overcome this problem, we investigate the effects of TiCl4 treatment on DSSCs which were constructed with composite films made of TiO2 nanoparticles and TNTs. To find optimum condition of TNTs concentration in TiO2 composites film, series of DSSCs with different TNTs concentration were made. In this optimum condition (DSSCs with 10 wt% of TNT), the effects of post treatment are compared for different TiCl4 concentrations. The results show that the DSSCs using a TiCl4 (90 mM) post treatment shows a maximum conversion efficiency of 7.83% due to effective electron transport and enhanced adsorption of dye on TiO2 surface.
Arylamine organic dyes with donor (D), π-bridge (π) and acceptor (A) moieties for dye-sensitized solar cells (DSCs) have received great attention in the last decade because of their high molar absorption coefficient, low cost and structural variety. In the early stages, the efficiency of DSCs with arylamine
In this review, we dissect nanotube growth under a systematic changing of electrode configurations and analyze relevant solar cell constructions as well as performances, in an attempt to explore efficient approaches to harvest solar energy. It is divided into two parts for discussion: planar and nonplanar electrodes, as a conformal coating of anodic nanotubes can be formed on an electrode regardless of its geometric shape. The first part is presented in this paper. To date, the most efficient dye-sensitized solar cells (DSCs) based on anodic nanotubes exhibit a power conversion efficiency of 7~8%, whereas those based on nanoparticles show a higher efficiency of 11~12%. This is due to a lower surface area per photoanode volume for nanotubes with respect to nanoparticles. It is calculated that, for a given photoanode volume, it requires the nanotube diameter to go down to ~30 nm to generate a comparable surface area with nanoparticles of ~20 nm. For single-sided tube growth, three dominant ...
Dye-sensitized solar cells (DSSCs) are super thin, cheap solar cells that can operate indoors. Created by G24 Innovations, the first batch of the new solar cells have found a home in fashion, heading to Hong Kong-based consumer
Dye-sensitized solar cells (DSCs) are promising to be the next-generation solar cells arising from their high light-to-electricity conversion efficiency and low fabrication cost.
New hemicyanine dyes (CM101, CM102, CM103, and CM104) in which tetrahydroquinoline derivatives are used as electron donors and N-(carboxymethyl)-pyridinium is used as an electron acceptor and anchoring group were designed and synthesized for dye-sensitized solar cells (DSSCs). Compared with corresponding dyes that have cyanoacetic acid as the acceptor, N-(carboxymethyl)-pyridinium has a stronger electron-withdrawing ability, which causes the absorption maximum of dyes to be redshifted. The photovoltaic performance of the DSSCs based on dyes CM101CM104 markedly depends on the molecular structures of the dyes in terms of the n-hexyl chains and methoxyl. The device sensitized by dye CM104 achieved the best conversion efficiency of 7.0?% (Jsc=13.4 mA?cm-2, Voc=704 mV, FF=74.8?%) under AM 1.5 irradiation (100 mW?cm-2). In contrast, the device sensitized by reference dye CMR104 with the same donor but the cyanoacetic acid as the acceptor gave an efficiency of 3.4?% (Jsc=6.2 mA?cm-2, Voc=730 mV, ...
Nanoporous, p-type NiO films were sensitized with coumarin 343 (C343), and the photoinduced electron transfer dynamics was studied in the presence of different concentrations of electrolyte (I-3(-)/I- in propylene carbonate). Electron transfer from the valence band of NiO to the excited C343 is very fast, occurring on time scales from hundreds of femtoseconds to a few picoseconds, but also the subsequent recombination is quite rapid, on the time scale of tens of picoseconds. Nevertheless, formation of an intermediate, attributed to I2-I NiO(+), was observed on the picosecond time scale. Simultaneously the reduced dye was converted back to the C343 ground state, indicating that recombination could be intercepted by 13 reduction. Consistent with that interpretation, we observed oxidized NiO and depletion Of 13 persisting on the millisecond time scale. Complete dye-sensitized solar cells (DSSCs) with these films as photocathode gave up to 10-11% incident photon to current conversion efficiency at ...
Compared to traditional silicon based solar cells, dye-sensitized solar cells, or Graetzel cells, have significantly lower production costs, even though the former still show higher efficiency.
Read "A new study on solid-state cyanine dye-sensitized solar cells, Research on Chemical Intermediates" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Dye-sensitized solar cells (DSSCs) have been intensely researched for more than two decades. Electrolyte formulations are one of the bottlenecks to their successful commercialization, since these result in trade-offs between the photovoltaic performance and long-term performance stability. The corrosive nature of the redox shuttles in the electrolytes is an additional limitation for industrial-scale production of DSSCs, especially with low cost metallic electrodes. Numerous electrolyte formulations have been developed and tested in various DSSC configurations to address the aforementioned challenges. Here, we comprehensively review the progress on the development and application of electrolytes for DSSCs. We particularly focus on the improvements that have been made in different types of electrolytes, which result in enhanced photovoltaic performance and long-term device stability of DSSCs. Several recently introduced electrolyte materials are reviewed, and the role of electrolytes in different ...