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Traumatic and surgical scars: successful treatment with a 1,565nm erbium-glass NAFL combined with IPL.

Scars are a very common condition of the general population and can have a profound impact on the psyche of the patient such as low self-esteem and feelings of psychosocial isolation. Various therapeutic approaches have been proposed for improving the clinical appearance of scars. Fractional mode of ablative and non-ablative lasers has become a novel strategy for the treatment of scars. A total of 43 patients (Fitzpatrick skin type II to IV), clinically diagnosed of surgical and post-traumatic scars from January 2015 to December 2016, were treated. Each treatment comprised of several passes over the scars with different devices, using a 1.565nm scanned erbium-doped fiber NAFL and an IPL. All patients noted subjective improvement in cosmesis and functionality after treatment, also with a decreased pain and an increased mobility on the underlying plans. Numerous therapeutic strategies for traumatic and surgical scars have been suggested to date, but no consistent treatment modality has been established yet. In our study, we have shown that there was a significant collagen remodelling with decrease of scar vascularity and significant improvement of pliability of scar after combined treatment with non-ablative fractional resurfacing and IPL resulting in a remarkable improvement in scar vascularity, pigmentation and height.

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Androgen Receptor (Phosph Androgen Receptor (Phosph Rabbit Anti-Human Androge Rabbit Anti-Human Androge Androgen Receptor (Ab 650 AZD-3514 Mechanisms: Andr 17β-Acetoxy-2α-bromo-5 (5α,16β)-N-Acetyl-16-[2 (5α,16β)-N-Acetyl-16-ac 5α-N-Acetyl-2'H-androst- 5α-N-Acetyl-2'H-androst- 3-O-Acetyl 5,14-Androstad

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Fluorenone based fluorescent probe for selective "turn-on" detection of pyrophosphate and alanine.

To sense biologically important entities with different size and dimensions, a fluorenone based fluorescent receptor was designed and synthesized. Probe 1 displayed a distinct fluorescence enhancement emission at 565nm for pyrophosphate and 530nm for alanine in polar solvent. The fluorescence titration experiments confirm 1:1 stoichiometric ratio with high-binding constant and very low limit of detection (LoD) values. Receptor 1 showed a highly selective and sensitive recognition to HPOand to alanine over other competitive anions and amino acids. In addition, the fluorescence lifetime measurement and reversible binding study results support the practical importance of 1.

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Photoluminescence, thermoluminescence glow curve and emission characteristics of YO:Ernanophosphor.

Nanocrystalline Erdoped YOcrystals were prepared by a sol gel technique. X-ray diffraction (XRD) patterns showed the cubic structure of YOand the crystallite size was found to be ~25nm. Optical absorption showed absorption peaks at 454, 495 and 521nm. These peaks are attributed to theF+F,FandH+Stransitions of Er. Under excitation at 378nm, the appearance of strong green (520-565nm) down conversion emission assigned to the (HS)→Itransition and the feeble red (650-665nm) emission is assigned to theF→Itransition. The color chromaticity coordinates showed emission in the green region. The strong green emission of YO:Ernanophosphor may be useful for applications in solid compact laser devices. Thermoluminescence (TL) studies of γ-irradiated YO:Ershowed a prominent TL glow peak maximum at 383K along with a less intense shoulder peak at ~425K and a weak glow at 598K. TL emission peaks with maxima at 545, 490, 588 and 622nm for the doped sample were observed at a temperature of 383K and these emissions were due to defect related to the host material. TL kinetic parameters were calculated by a glow curve deconvolution (GCD) method and the obtained results are discussed in detail for their possible usage in high dose dosimetry.

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Sequential determination of nickel and cadmium in tobacco, molasses and refill solutions for e-cigarettes samples by molecular fluorescence.

In this work, a new procedure was developed for separation and preconcentration of nickel(II) and cadmium(II) in several and varied tobacco samples. Tobacco samples were selected considering the main products consumed by segments of the population, in particular the age (youth) and lifestyle of the consumer. To guarantee representative samples, a randomized strategy of sampling was used. In the first step, a chemofiltration on nylon membrane is carried out employing eosin (Eo) and carbon nanotubes dispersed in sodium dodecylsulfate (SDS) solution (phosphate buffer pH 7). In this condition, Ni(II) was selectively retained on the solid support. After that, the filtrate liquid with Cd(II) was re-conditioned with acetic acid /acetate buffer solution (pH 5) and followed by detection. A spectrofluorimetric determination of both metals was carried out, on the solid support and the filtered aqueous solution, for Ni(II) and Cd(II), respectively. The solid surface fluorescence (SSF) determination was performed at λ= 545nm (λ= 515nm) for Ni(II)-Eo complex and the fluorescence of Cd(II)-Eo was quantified in aqueous solution using λ= 565nm (λ= 540nm). The calibration graphs resulted linear in a range of 0.058-29.35μgLfor Ni(II) and 0.124-56.20μgLfor Cd(II), with detection limits of 0.019 and 0.041μgL(S/N = 3). The developed methodology shows good sensitivity and adequate selectivity, and it was successfully applied to the determination of trace amounts of nickel and cadmium present in tobacco samples (refill solutions for e-cigarettes, snuff used in narguille (molasses) and traditional tobacco) with satisfactory results. The new methodology was validated by ICP-MS with adequate agreement. The proposed methodology represents a novel fluorescence application to Ni(II) and Cd(II) quantification with sensitivity and accuracy similar to atomic spectroscopies, introducing for the first time the quenching effect on SSF.

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Effects and mechanism of ultrasonic irradiation on solidification microstructure and mechanical properties of binary TiAl alloys.

In spite of their high temperature and reactivity, the binary TiAl alloys are successfully imposed by the ultrasonic irradiation and the microstructure evolution, solidification behaviors and mechanical properties are elaborately investigated. After ultrasonic irradiation, a high quality ingot without shrinkage defects and element segregation is obtained and the coarse dendrite structure is well modified into fine non-dendrite globular grains. The coarse lamellar colony and lamellar space of Ti44Al alloy is refined from 685μm to 52μm and 1185nm to 312nm, respectively (similarly, 819μm to 102μm and 2085nm to 565nm for Ti48Al alloy). For Ti48Al alloy, the α peritectic phase is simultaneously precipitated from the melt as well as the β primary phase before the peritectic reaction and the solidification is transformed into the mixed α-solidifying and β-solidifying. Ultrasonic irradiation promotes the peritectic reaction and phase transformation completely and the phase constituent becomes more close to the equilibrium level. The compressive strength of Ti44Al and Ti48Al alloys are increased from 623MPa to 1250MPa and 980MPa to 1295MPa, respectively. The grain refinement and dendrite transformation enhance the grain boundary sliding improving the plastic deformation ability. Ultrasonic irradiation significantly accelerates the melt flow and solute redistribution and the main grain refinement mechanism is the cavitation-enhanced nucleation by inclusion activation and heightened supercooling.

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AZD-3514 Mechanisms: Andr Androgen Receptor (Phosph Androgen Receptor (Phosph Rabbit Anti-Human Androge Rabbit Anti-Human Androge Androgen Receptor (Ab 650 17β-Acetoxy-2α-bromo-5 (5α,16β)-N-Acetyl-16-[2 (5α,16β)-N-Acetyl-16-ac 5α-N-Acetyl-2'H-androst- 5α-N-Acetyl-2'H-androst- 3-O-Acetyl 5,14-Androstad

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One-step purification of R-phycoerythrin from the red edible seaweed Grateloupia turuturu.

A one-step chromatographic method for the purification of R-phycoerythrin (R-PE) of Grateloupia turuturu Yamada is described. Native R-PE was obtained with a purity index of 2.89 and a recovery yield of 27% using DEAE-Sepharose Fast Flow chromatography with a three-step increase in ionic strength. The analysis by SDS electrophoresis showed a broad band between 18 and 21kDa in size corresponding to subunits α and β and a low intensity band of 29kDa corresponding to the γ subunit. Two forms of R-PE were identified by gel filtration chromatography: a native form with a molecular weight of 260±5kDa and a dissociated form with a molecular weight of 60±2kDa. The native form presented the characteristic absorption spectrum of R-PE with three absorbance maxima at 498, 540 and 565nm, whereas the dissociated form presented only the 498 and 540nm peaks. Moreover, the two forms displayed two different fluorescence maxima.

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Sensitive flow-injection spectrophotometric analysis of bromopride.

A flow injection spectrophotometric procedure employing merging zones is proposed for direct bromopride determination in pharmaceutical formulations and biological fluids. The proposed method is based on the reaction between bromopride and p-dimethylaminocinnamaldehyde (p-DAC) in acid medium, in the presence of sodium dodecyl sulfate (SDS), resulting in formation of a violet product (λmax=565nm). Experimental design methodologies were used to optimize the experimental conditions. The Beer-Lambert law was obeyed in a bromopride concentration range of 3.63×10(-7) to 2.90×10(-5)molL(-1), with a correlation coefficient (r) of 0.9999. The limits of detection and quantification were 1.07×10(-7) and 3.57×10(-7)molL(-1), respectively. The proposed method was successfully applied to the determination of bromopride in pharmaceuticals and human urine, and recoveries of the drug from these media were in the ranges 99.6-101.2% and 98.6-102.1%, respectively. This new flow injection procedure does not require any sample pretreatment steps.

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Folding and stability studies on C-PE and its natural N-terminal truncant.

The conformational and functional state of biliproteins can be determined by optical properties of the covalently linked chromophores. α-Subunit of most of the phycoerythrin contains 164 residues. Recently determined crystal structure of the naturally truncated form of α-subunit of cyanobacterial phycoerythrin (Tr-αC-PE) lacks 31 N-terminal residues present in its full length form (FL-αC-PE). This provides an opportunity to investigate the structure-function relationship between these two natural forms. We measured guanidinium chloride (GdmCl)-induced denaturation curves of FL-αC-PE and Tr-αC-PE proteins, followed by observing changes in absorbance at 565nm, fluorescence at 350 and 573nm, and circular dichroism at 222nm. The denaturation curve of each protein was analyzed for ΔGD(∘), the value of Gibbs free energy change on denaturation (ΔGD) in the absence of GdmCl. The main conclusions of the this study are: (i) GdmCl-induced denaturation (native state↔denatured state) of FL-αC-PE and Tr-αC-PE is reversible and follows a two-state mechanism, (ii) FL-αC-PE is 1.4kcalmol(-1) more stable than Tr-αC-PE, (iii) truncation of 31-residue long fragment that contains two α-helices, does not alter the 3-D structure of the remaining protein polypeptide chain, protein-chromophore interaction, and (iv) amino acid sequence of Tr-αC-PE determines the functional structure of the phycoerythrin.

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The effects of acetylcolletotrichin on the mitochondrial respiratory chain.

1. Acetylcolletotrichin is a phytotoxic compound that has been isolated from the culture medium of the fungus Colletotrichum capsici (Grove et al., 1966). 2. With isolated liver and kidney mitochondria acetylcolletotrichin markedly inhibited the oxidation of succinate and those substrates with NAD-linked dehydrogenases, but did not inhibit the oxidation of ascorbate in the presence of tetramethyl-p-phenylenediamine. In this respect its action was similar to that of antimycin A. 3. Acetylcolletotrichin differed from antimycin in that, even at high concentrations which produced a maximal inhibitory effect, its action was partially reversed by uncoupling agents. Also acetylcolletotrichin had no detectable effect on the oxidative activity of blowfly flight-muscle mitochondria and was not very effective with heart mitochondria. 4. Acetylcolletotrichin inhibited the oxidative activity of liver mitochondria more markedly when respiration was stimulated by ADP together with phosphate and was less effective when respiration was stimulated by uncoupling agents. 5. There was an unusual interaction between the succinate oxidation system and the oxidation of glutamate together with malate. Thus, glutamate together with malate, even in the presence of rotenone, markedly decreased the effectiveness of acetylcolletotrichin in inhibiting succinate oxidation. 6. These effects were paralleled in the observed redox changes of cytochrome c. 7. The unusual behaviour of the cytochromes b in the presence of acetylcolletotrichin is described, and it is suggested tentatively that this inhibitor acts between cytochromes b with absorption maxima at 30 degrees C of approximately 560 and 565nm.

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