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https://www.readbyqxmd.com/read/28107708/acid-base-treated-vermiculite-as-high-performance-adsorbent-insights-into-the-mechanism-of-cationic-dyes-adsorption-regeneration-recyclability-and-stability-studies
#1
Wojciech Stawiński, Agnieszka Węgrzyn, Tomasz Dańko, Olga Freitas, Sónia Figueiredo, Lucjan Chmielarz
Additional treatment with NaOH of acid activated vermiculite results in even higher increase in the adsorption capacity in comparison to samples modified only in acidic solution (first step of activation) with respect to raw material. Optimization of treatment conditions and adsorption capacity for two cationic dyes (methylene blue (MB) and astrazon red (AR)), also as binary mixture, was evaluated. The capacity, based on column studies, increased from 48 ± 2 to 203 ± 4 mg g(-1) in the case of methylene blue and from 51 ± 1 to 127 ± 2 mg g(-1) in the case of astrazon red on starting and acid-base treated material, respectively...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28107440/new-composites-lnbdc-ac-and-cb-6-ac-from-design-toward-selective-adsorption-of-methylene-blue-or-methyl-orange
#2
Guilherme de C Santos, Amanda L Barros, Carlos A F de Oliveira, Leonis L da Luz, Fausthon F da Silva, Grégoire J-F Demets, Severino Alves Júnior
New porous composites LnBDC@AC (AC = Activated carbon, Ln = Eu and Gd and BDC = 1,4-benzenedicaboxylate) and CB[6]@AC (CB[6] = Cucurbit[6]uril) were obtained using hydrothermal route. The LnBDC and CB[B] are located inside the pore of the carbon materials as was observed in SEM-EDS, XRPD and FT-IR analysis. Porosimetry analysis showed values typically between AC and LnBDC material, with pore size and surface area, respectively, 29,56 Å and 353.98 m2g-1 for LnBDC@AC and 35,53 Å and 353.98 m2g-1 for CB[6]@AC...
2017: PloS One
https://www.readbyqxmd.com/read/28106977/correction-to-synthesis-of-%C3%AE-cyclodextrin-based-electrospun-nanofiber-membranes-for-highly-efficient-adsorption-and-separation-of-methylene-blue
#3
Rui Zhao, Yong Wang, Xiang Li, Bolun Sun, Ce Wang
No abstract text is available yet for this article.
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28105400/discovery-of-a-novel-sn-ii-based-oxide-%C3%AE-snmoo4-for-daylight-driven-photocatalysis
#4
Hiroyuki Hayashi, Shota Katayama, Takahiro Komura, Yoyo Hinuma, Tomoyasu Yokoyama, Ko Mibu, Fumiyasu Oba, Isao Tanaka
Daylight-driven photocatalysts have attracted much attention in the context of "green" technology. Although various active materials have been reported and their applications are rapidly increasing, many are discovered after enormous experimental efforts. Herein the discovery of a novel oxide photocatalyst, β-SnMoO4, is demonstrated via a rational search of 3483 known and hypothetical compounds with various compositions and structures over the whole range of SnO-MO q/2 (M: Ti, Zr, and Hf (q = 4); V, Nb, and Ta (q = 5); Cr, Mo, and W (q = 6)) pseudobinary systems...
January 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28104499/methylene-blue-increases-the-amount-of-hsf1-through-promotion-of-pka-mediated-increase-in-hsf1-p300-interaction
#5
Chao Huang, Wenfeng Hu, Jili Wang, Lijuan Tong, Xu Lu, Feng Wu, Yong Ling, Bo Jiang, Wei Zhang, Zhuo Chen, Yibin Qin, Rongrong Yang
Heat shock factor 1 (HSF1) critically contributes to the host defense, and its amount determines the mobilization efficiency of HSF1 under stress conditions. To date, how HSF1 amount is regulated remains largely unknown. We found that methylene blue (MB), an anti-oxidative and anti-inflammatory agent, increased the amount of HSF1 in BV-2 microglia, primary microglia, astrocytes, neurons and vital organs. The increased HSF1 contributed to a more increase in nuclear translocation of HSF1, association of HSF1 with heat shock protein 70 (Hsp70) promoters and Hsp70 expression levels, and also induced a synergistic protection against oxidative stress-induced injuries in MB and heat shock-treated cells...
January 16, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28099873/antimicrobial-photodynamic-therapy-as-an-adjunct-for-treatment-of-deep-carious-lesions-a-systematic-review
#6
REVIEW
Fabian Cieplik, Wolfgang Buchalla, Elmar Hellwig, Ali Al-Ahmad, Karl-Anton Hiller, Tim Maisch, Lamprini Karygianni
For deep carious lesions, a more conservative treatment modality ("selective caries removal") has been proposed, where only the heavily contaminated dentine is removed. In this regard, effective adjuncts for cavity disinfection such as the antimicrobial photodynamic therapy (aPDT) can be valuable clinically prior to definitive restoration. Therefore, the aim of this study was to systematically assess clinical studies on the effectiveness of aPDT as a supplementary tool in the treatment of deep caries lesions...
January 15, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28098484/romanowsky-staining-the-romanowsky-effect-and-thoughts-on-the-question-of-scientific-priority
#7
A V Bezrukov
I give an historical account and analysis of the scientific priority of the discovery of the polychrome staining of microscopic biological preparations provided by mixtures of eosin plus methylene blue and its derivatives, especially azure B. I maintain that both the formal priority for the discovery of the polychrome staining phenomenon and credit for initiating the development of a technique of polychrome staining properly belong to D. L. Romanowsky. His scientific work demonstrated the possibility of using a simple technique to stain hematological preparations selectively to give good contrast, high resolution and the ability to identify malaria parasites...
January 18, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28098229/novel-synthesis-of-zno-pmma-nanocomposites-for-photocatalytic-applications
#8
Alessandro Di Mauro, Maria Cantarella, Giuseppe Nicotra, Giovanna Pellegrino, Antonino Gulino, Maria Violetta Brundo, Vittorio Privitera, Giuliana Impellizzeri
The incorporation of nanostructured photocatalysts in polymers is a strategic way to obtain novel water purification systems. This approach takes the advantages of: (1) the presence of nanostructured photocatalyst; (2) the flexibility of polymer; (3) the immobilization of photocatalyst, that avoids the recovery of the nanoparticles after the water treatment. Here we present ZnO-polymer nanocomposites with high photocatalytic performance and stability. Poly (methyl methacrylate) (PMMA) powders were coated with a thin layer of ZnO (80 nm thick) by atomic layer deposition at low temperature (80 °C)...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094979/photo-induced-cross-linking-of-short-furan-modified-dna-on-surfaces
#9
Cinthya Yamila Véliz Montes, Henry Memczak, Ellen Gyssels, Tomas Torres, Annemieke Madder, Rudolf J Schneider
We report for the first time the formation of site-specifically interstrand cross-linked (ICL) surface-immobilized furan-modified DNA duplexes via singlet oxygen. 1O2, necessary for effecting furan-mediated ICL formation, was produced in situ using methylene blue or a zinc phthalocyanine derivative (TT1) as photosensitizers. Via surface plasmon resonance spectroscopy we show that surface ICL was achieved and established a robust link which enhances the stability of the 12-mer duplex even after surface regeneration...
January 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28091850/repeated-applications-of-photodynamic-therapy-on-candida-glabrata-biofilms-formed-in-acrylic-resin-polymerized
#10
Lírian Silva de Figueiredo Freitas, Rodnei Dennis Rossoni, Antonio Olavo Cardoso Jorge, Juliana Campos Junqueira
Previous studies have been suggested that photodynamic therapy (PDT) can be used as an adjuvant treatment for denture stomatitis. In this study, we evaluated the effects of multiple sessions of PDT on Candida glabrata biofilms in specimens of polymerized acrylic resin formed after 5 days. Subsequently, four applications of PDT were performed on biofilms in 24-h intervals (days 6-9). Also, we evaluated two types of PDT, including application of laser and methylene blue or light-emitting diode (LED) and erythrosine...
January 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28090280/in-vitro-activity-of-linezolid-in-combination-with-photodynamic-inactivation-against-staphylococcus-aureus-biofilms
#11
Nasim Kashef, Mahboobeh Akbarizare, Mohammad Reza Razzaghi
BACKGROUND: Biofilm infections are a major challenge in medical practice. Bacteria that live in a biofilm phenotype are more resistant to both antimicrobial therapy and host immune responses compared to their planktonic counterparts. So, there is need for new therapeutic strategies to combat these infections. A promising approach [known as Photodynamic Inactivation (PDI)] to kill bacteria growing as biofilms uses light in combination with a photosensitizer to induce a phototoxic reaction which produces reactive oxygen species that can destroy lipids and proteins causing cell death...
January 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28088570/achillea-millefolium-l-extract-mediated-green-synthesis-of-waste-peach-kernel-shell-supported-silver-nanoparticles-application-of-the-nanoparticles-for-catalytic-reduction-of-a-variety-of-dyes-in-water
#12
Bahar Khodadadi, Maryam Bordbar, Mahmoud Nasrollahzadeh
In this paper, silver nanoparticles (Ag NPs) are synthesized using Achillea millefolium L. extract as reducing and stabilizing agents and peach kernel shell as an environmentally benign support. FT-IR spectroscopy, UV-Vis spectroscopy, X-ray Diffraction (XRD), Field emission scanning electron microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDS), Thermo gravimetric-differential thermal analysis (TG-DTA) and Transmission Electron Microscopy (TEM) were used to characterize peach kernel shell, Ag NPs, and Ag NPs/peach kernel shell...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088046/application-of-acid-modified-polyurethane-foam-surface-for-detection-and-removing-of-organochlorine-pesticides-from-wastewater
#13
E A Moawed, A M Radwan
The commercial polyurethane foam was acid modified to get an inexpensive adsorbent (AM-PUF) has highly surface polarity and sorption capacity. The elemental analysis, scanning electron microscopy, thermal analysis, ultraviolet/visible/infrared spectroscopies and X-ray diffraction were used for characterization of AM-PUF. The surface of AM-PUF has amorphous character (broadband at 2θ, 21.75°) and contains several active sites e.g. NH, OH, CO, CC and COC groups. The electrical conductivity (σ), iodine value and methylene blue index of AM-PUF are 1...
January 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28081490/mesoporous-activated-carbon-prepared-from-naoh-activation-of-rattan-lacosperma-secundiflorum-hydrochar-for-methylene-blue-removal
#14
Md Azharul Islam, M J Ahmed, W A Khanday, M Asif, B H Hameed
Hydrothermal carbonization of biomass wastes presents a promising step in the production of cost-effective activated carbon. In the present work, mesoporous activated carbon (HAC) was prepared by the hydrothermal carbonization of rattan furniture wastes followed by NaOH activation. The textural and morphological characteristics, along with adsorption performance of prepared HAC toward methylene blue (MB) dye, were evaluated. The effects of common adsorption variables on performance resulted in a removal efficiency of 96% for the MB sample at initial concentration of 25mg/L, solution pH of 7, 30°C, and 8h...
January 9, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28079582/landmark-guided-and-ultrasound-guided-approaches-for-trochanteric-bursa-injection-a-cadaveric-study
#15
Alex Mu, Philip Peng, Anne Agur
BACKGROUND: Trochanteric bursa (TB) injection with local anesthetic and corticosteroid is a treatment for patients suffering from greater trochanteric pain syndrome. Both landmark (LM)-guided and ultrasound (US)-guided methods have been used, but their accuracies have not been determined. This study examined the accuracy of these injections with cadaveric dissection. METHODS: Twenty-four hip specimens were randomized to receive TB injections with methylene blue under either LM-guided or US-guided approach...
January 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28078984/rasburicase-induced-methemoglobinemia-in-a-patient-with-glucose-6-phosphate-dehydrogenase-deficiency
#16
Maliha Khan, Shilpa Paul, Saad Farooq, Thein Hlaing Oo, Priya Ramshesh, Nitin Jain
BACKGROUND: Rasburicase is commonly used in patients with hematologic malignancies for tumor lysis syndrome prophylaxis and management. Methemoglobinemia is a serious rare adverse effect of rasburicase, more common in patients with G6PD deficiency. Prompt diagnosis and appropriate management of this condition can make the difference between successful recovery and significant morbidity. Here we discuss the link of rasburicase with methemoglobinemia and the pathophysiology behind increased incidence of this side effect in G6PD deficient patients...
January 11, 2017: Current Drug Safety
https://www.readbyqxmd.com/read/28078884/construction-of-three-dimensional-hemin-functionalized-graphene-hydrogel-with-high-mechanical-stability-and-adsorption-capacity-for-enhancing-photodegradation-of-methylene-blue
#17
Yuewu Zhao, Yuanjian Zhang, Anran Liu, Zhenzhen Wei, Songqin Liu
A three-dimensional hemin-functionalized graphene hydrogel (Hem/GH) was prepared by a facile self-assembly approach. The as-prepared Hem/GH showed good mechanical strength with a storage modulus of 609-642 kPa and a high adsorption capacity to organic dye contaminants (341 mg g-1 for rhodamine B). Moreover, Hem/GH could be used as photosensitizer for photocatalytic degradation of organic dyes, and showed superior photodegradation activity of methylene blue (MB) with respect to the counterparts such as graphene hydrogel (GH) and commercial catalyst P25...
January 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28074667/a-systematic-analysis-of-methylene-blue-for-drug-induced-shock-in-humans
#18
Anita Paula Tataru, Brandon J Warrick, Susan Smolinske
No abstract text is available yet for this article.
January 11, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28073383/evaluation-of-methylene-blue-pyrimethamine-and-its-combination-on-an-in-vitro-neospora-caninum-model
#19
Luiz Miguel Pereira, Isabel Cristina Vigato-Ferreira, Gabriela DE Luca, Cássia Mariana Bronzon DA Costa, Ana Patrícia Yatsuda
Neospora caninum is an apicomplexan parasite strongly related to reproductive problems in cattle. The neosporosis control is not well established and several fronts are under development, predominantly based on immune protection, immunomodulation and chemotherapy. The use of anti-malarial drugs as therapeutic sources has, in theory, considerable potential for any apicomplexan. Drugs such as methylene blue (MB) and pyrimethamine (Pyr) represent therapeutic options for malaria; thus, their use for neosporosis should be assessed...
January 11, 2017: Parasitology
https://www.readbyqxmd.com/read/28073321/in-response-to-a-systematic-analysis-of-methylene-blue-for-drug-induced-shock
#20
Stephen A Harding, Robert S Hoffman, David H Jang
No abstract text is available yet for this article.
January 11, 2017: Clinical Toxicology
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