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https://www.readbyqxmd.com/read/28719876/photoelectrocatalytic-degradation-of-methylene-blue-using-f-doped-tio2-photoelectrode-under-visible-light-irradiation
#1
Dong Liu, Renwen Tian, Jianqiao Wang, Er Nie, Xianqing Piao, Xin Li, Zhuo Sun
Photoelectrocatalysis (PEC) has attracted great interest due to cost effectiveness and high efficiency in water treatment. In this study, F doped TiO2 (F-TiO2) photoelectrodes with honeycomb like morphology were prepared, and the PEC performance was investigated. F-TiO2 particles that showed enhanced absorption of visible light were synthesized via a sol-gel method. F-TiO2 particles were anchored onto the surface of F-doped SnO2 glass by a screen-printing method to prepare the F-TiO2 photoelectrodes. The PEC performance of the F-TiO2 photoelectrodes was investigated via the degradation of methylene blue (MB) under visible light irradiation...
July 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28719858/interfacial-analysis-of-sirna-complexes-with-poly-ethylenimine-pei-or-pamam-dendrimers-in-gene-delivery
#2
Patrick K C Chang, Clive A Prestidge, Kristen E Bremmell
Solution and interfacial analysis has been employed to gain insight into the complexation of siRNA using either G4 PAMAM dendrimers or 25kDa branched poly-ethylenimine (bPEI). The size, charge and shape/structure of the complexing agents were probed using atomic force microscopy (AFM), circular dichroism spectrometry (CD), dynamic light scattering (DLS), and gel electrophoresis (GE). The binding capability of these cationic polymers to the siRNA molecule, subsequently controls the surface/adsorption behaviour of the complexes to a negatively charged surface...
July 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28719750/electrostatic-interaction-assisted-construction-of-3d-networks-of-manganese-dioxide-nanosheets-for-flexible-high-performance-solid-state-asymmetric-supercapacitors
#3
Na Liu, Yan Li Su, Zhiqiang Wang, Zhen Wang, Jinsong Xia, Yong Chen, Zhigang Zhao, Qingwen Li, Fengxia Geng
A three-dimensional (3D) macroscopic network of manganese oxide MnO2 sheets was firstly synthesized by an easily scalable solution approach, grafting the negatively charged surfaces of the MnO2 sheets with an aniline monomer by electrostatic interactions followed by a quick chemical oxidizing polymerization reaction. The obtained structure possessed MnO2 sheets interconnected with polyaniline chains, producing a 3D monolith rich of mesopores. The MnO2 sheets had almost all their reactive centers exposed on the electrode surface, combining with the electron transport highways provided by polyaniline and the shortened diffusion paths provided by the porous structure, the deliberately designed electrode achieved excellent capacitance of 762 F g-1 at a current of 1 A g-1 and cycling performance with a capacity retention of 90% over 8000 cycles...
July 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28719739/graphene-electronic-tattoo-sensors
#4
Shideh Kabiri Ameri, Rebecca Ho, Hongwoo Jang, Li Tao, Youhua Wang, Liu Wang, David M Schnyer, Deji Akinwande, Nanshu Lu
Tattoo-like epidermal sensors are an emerging class of truly wearable electronics owing to their thinness and softness. While most of them are based on thin metal films, silicon membrane, or nanoparticle-based printable inks, we report a sub-micron thick, multimodal electronic tattoo sensors that are made of graphene. The graphene electronic tattoo (GET) is designed with filamentary serpentines and fabricated by a cost- and time-effective "wet transfer, dry patterning" method. It has a total thickness of 463 ± 30 nm, an optical transparency of ~85%, and a stretchability of more than 40%...
July 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28719671/environmentally-benign-dry-gel-conversions-of-zr-based-uio-metal-organic-frameworks-with-high-yield-and-the-possibility-of-solvent-re-use
#5
Serkan Gökpinar, Tatyana Diment, Christoph Janiak
Herein we report an alternative synthesis method for Zr-based UiO metal-organic frameworks (MOFs), namely dry-gel conversion (DGC). It was possible to synthesize nano- to microsized UiO-66, UiO-66-NH2 and UiO-67 with high crystallinity, high surface area and increased yield using only one-sixth or less of the solvent volume compared to the solution synthesis on the same scale. Additionally, it is shown that solvent re-use is possible over at least five synthesis runs making the DGC method an ecological and extremely solvent-economical route to obtain Zr-based UiO-MOFs with reproducible results...
July 18, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28719650/heat-stimuli-enhanced-osteogenesis-using-clinically-available-biomaterials
#6
Takehiro Ota, Yoshihiro Nishida, Kunihiro Ikuta, Ryuji Kato, Eiji Kozawa, Shunsuke Hamada, Tomohisa Sakai, Naoki Ishiguro
A recent study reported that heat stress stimulates osteogenesis in an in vivo rat model using alginate gel and magnetite cationic liposomes. However, for clinical use, the efficacy for promoting osteogenesis needs to be investigated using clinically approved materials, and preferably with animals larger than rats. The aim of this study was to evaluate multiple heat stimuli-triggered osteogenesis in rat tibial defect models using already clinically applicable materials (Resovist® and REGENOS®) and determine the efficacy also in the rabbit...
2017: PloS One
https://www.readbyqxmd.com/read/28719635/differential-protein-expression-profile-in-the-hypothalamic-gt1-7-cell-line-after-exposure-to-anabolic-androgenic-steroids
#7
Freddyson J Martínez-Rivera, Juliana Pérez-Laspiur, María E Santiago-Gascot, Abner G Alemán-Reyes, Emanuel García-Santiago, Yolanda Rodríguez-Pérez, Cristhian Calo-Guadalupe, Inelia Otero-Pagán, Roxsana N Ayala-Pagán, Magdiel Martínez, Yisel M Cantres-Rosario, Loyda M Meléndez, Jennifer L Barreto-Estrada
The abuse of anabolic androgenic steroids (AAS) has been considered a major public health problem during decades. Supraphysiological doses of AAS may lead to a variety of neuroendocrine problems. Precisely, the hypothalamic-pituitary-gonadal (HPG) axis is one of the body systems that is mainly influenced by steroidal hormones. Fluctuations of the hormonal milieu result in alterations of reproductive function, which are made through changes in hypothalamic neurons expressing gonadotropin-releasing hormone (GnRH)...
2017: PloS One
https://www.readbyqxmd.com/read/28719551/annulus-fibrosus-repair-using-high-density-collagen-gel-an-in-vivo-ovine-model
#8
Brenton Pennicooke, Ibrahim Hussain, Connor Berlin, Stephen R Sloan, Brandon Borde, Yu Moriguchi, Gernot Lang, Rodrigo Navarro-Ramirez, Jonathan Cheetham, Lawrence J Bonassar, Roger Härtl
STUDY DESIGN: Ovine in vivo study. OBJECTIVE: To perform lateral approach lumbar surgery in an ovine model to administer an injectable riboflavin (RF) cross-linked high-density collagen (HDC) gel and to assess its ability to mitigate intervertebral disc (IVD) degeneration after induced annulus fibrosus (AF) injury. SUMMARY OF BACKGROUND DATA: Biological-based injectable gels have shown efficacy in restoring biomechanical, radiographic, and histological parameters in IVD-injured animal models...
July 17, 2017: Spine
https://www.readbyqxmd.com/read/28719485/does-the-application-of-heat-gel-pack-after-eutectic-mixture-of-local-anesthetic-cream-improve-venipuncture-or-intravenous-cannulation-success-rate-in-children-a-randomized-control-trial
#9
Silvana Schreiber, Giorgio Cozzi, Giuseppa Patti, Andrea Taddio, Marcella Montico, Chiara Pierobon, Egidio Barbi
OBJECTIVE: Needle-related procedures are the most common sources of pain for children in the hospital setting. The most used topical anesthetic, eutectic mixture of local anesthetic (EMLA) cream, may cause transient vasoconstriction. It has been postulated that this vasoconstriction may decrease vein visualization. The application of heat gel pack after removal of EMLA cream in the site of venipuncture counteracts the vasoconstriction, improving vein visualization. We assessed using a prospective randomized controlled trial whether the application of heat gel pack increases the needle procedure success rate...
July 17, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28719370/simple-preparation-of-timolol-0-5-gel-from-eye-drop-solution-for-superficial-infantile-hemangiomas
#10
Winnie Choo
The discovery of beta-adrenergic blocker effects on infantile hemangiomas has affected the choice of treatment in recent years. Oral propranolol is effective in treating infantile hemangiomas, but the risk of systemic side effects remains a concern. Data from literature review reported positive clinical outcomes with no major adverse effects observed in children using topical beta-blocker such as timolol maleate. Topical application of timolol eye drop has been mentioned in few studies, most of which reported that the solution cannot stay on the site of application due to its fluidity...
July 2017: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28719346/virulence-genes-in-biofilm-producer-enterococcus-faecalis-isolates-from-root-canal-infections
#11
M Akbari Aghdam, M H Soroush Barhaghi, M Aghazadeh, F Jafari, M Beomide Hagh, M Haghdoost, M Y Memar, M Ahangarzadeh Rezaee, H Samadi Kafil
Enterococcus faecalis is occurring in opportunistic infections involving the oral cavity. This study aimed to evaluate the presence of E. faecalis virulence genes in dental root canal isolates recovered from advanced chronic periodontitis patients. One hundred E. faecalis isolated from dental root canal during July 2015 to Oct 2016. After analysis of biofilm formation by the semi-quantitative determination in 96-well flat bottom polystyrene plates, the presence of asa, esp, efaA, ace, ebpR, gel and hyl gene were studied by PCR...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28719174/adsorption-and-biodegradation-of-aromatic-chemicals-by-bacteria-encapsulated-in-a-hydrophobic-silica-gel
#12
Jonathan Konstantine Sakkos, Baris R Mutlu, Lawrence P Wackett, Alptekin Aksan
An adsorbent silica biogel material was developed via silica gel encapsulation of Pseudomonas sp. NCIB 9816-4, a bacterium that degrades a broad spectrum of aromatic pollutants. The adsorbent matrix was synthesized using silica precursors methyltrimethoxysilane (MTMS) and tetramethoxysilane (TMOS) to maximize the adsorption capacity of the matrix while maintaining a highly networked and porous microstructure. The encapsulated bacteria enhanced the removal rate and capacity of the matrix for an aromatic chemical mixture...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28719063/enhanced-fibrinolysis-with-magnetically-powered-colloidal-microwheels
#13
Tonguc O Tasci, Dante Disharoon, Rogier M Schoeman, Kuldeepsinh Rana, Paco S Herson, David W M Marr, Keith B Neeves
Thrombi that occlude blood vessels can be resolved with fibrinolytic agents that degrade fibrin, the polymer that forms between and around platelets to provide mechanical stability. Fibrinolysis rates however are often constrained by transport-limited delivery to and penetration of fibrinolytics into the thrombus. Here, these limitations are overcome with colloidal microwheel (µwheel) assemblies functionalized with the fibrinolytic tissue-type plasminogen activator (tPA) that assemble, rotate, translate, and eventually disassemble via applied magnetic fields...
July 18, 2017: Small
https://www.readbyqxmd.com/read/28719036/a-novel-method-for-achieving-optimal-neck-extension
#14
David Black, Thomas Snooks, Matthew Clark
From tonsillectomies to major neck dissections, a large proportion of ENT operations require the neck to be extended. This is normally achieved by a gel pad or sand bag shoulder bolster, or in more frugal hospitals - a bag of normal saline. In our theatres two sizes of shoulder bolster are generally available. This article is protected by copyright. All rights reserved.
July 18, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28719004/development-of-new-supramolecular-lyotropic-liquid-crystals-and-their-application-as-alignment-media-for-organic-compounds
#15
Martin Leyendecker, Nils-Christopher Meyer, Christina Thiele
Most alignment media for the residual dipolar coupling (RDC) based molecular structure determination of small organic compounds consist of rod-like polymers dissolved in organic solvents or of swollen cross-linked polymer gels. So far the synthesis of polymer based alignment media is a challenging process which is often followed by a time consuming sample preparation. We propose the use of non-polymeric alignment media based on benzene-tricarboxamides (BTA) which self-assemble into rod-like supramolecules. Our newly found supramolecular lyotropic liquid crystals (LLC) are characterized for LLC properties and their suitability as alignment medium in NMR spectroscopy...
July 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28718996/production-of-ligninolytic-enzymes-and-some-diffusible-antifungal-compounds-by-white-rot-fungi-using-potato-solid-wastes-as-the-sole-nutrient-source
#16
H Schalchli, E Hormazábal, O Rubilar, G Briceño, A Mutis, G J Zocolo, C Diez
AIMS: The aim of this study was to evaluate the synthesis of ligninolytic enzymes and some diffusible antifungal compounds by white-rot fungi using peels or discarded potato as the sole nutrient source. METHODS AND RESULTS: The strain Trametes hirsuta Ru-513 has been highlighted for its laccase activity (595 ± 33 U l(-1) ), which is able to decolourise 87% of an anthraquinone dye using potato peels as the sole nutritional support. A native polyacrylamide gel of laccase proteins showed the presence of two isoenzymes, corresponding to proteins of 56 and 67 kDa, which were detected by SDS-PAGE...
July 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28718883/gelation-kinetics-and-characterization-of-enzymatically-enhanced-fish-scales-gelatin-pectin-coacervate
#17
Tao Huang, Zong-Cai Tu, Xinchen Shangguan, Hui Wang, Hainan-Zhang, Lu Zhang, Xiaomei Sha
BACKGROUND: Protein - polysaccharide complex coacervations have been considered extensively for the development of functional foods. The main problem of the complex coacervates is high unstable under different conditions and that cross-linking is necessary to stabilize them. In this study, the effects of pectin at different concentrations on the gel and structural properties of fish scales gelatin (FSG) - high methoxyl citrus pectin (HMP) coacervate enhanced by microbial-transglutanminase (MTGase) were studied...
July 18, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28718293/functional-design-of-dielectric-metal-dielectric-based-thin-film-encapsulation-with-heat-transfer-and-flexibility-for-flexible-displays
#18
Jeong Hyun Kwon, Seungyeop Choi, Yongmin Jeon, Hyuncheol Kim, Ki Soo Chang, Kyung Cheol Choi
In this study, a new and efficient dielectric-metal-dielectric-based thin-film encapsulation (DMD-TFE) with an inserted Ag thin film is proposed to guarantee the reliability of flexible displays by improving the barrier properties, mechanical flexibility, and heat dissipation, considered as essential requirements for OLED encapsulation. The DMD-TFE, which is composed of Al2O3, Ag, and a silica nanoparticle-embedded sol-gel hybrid nanocomposite, shows a water vapor transmission rate of 8.70 × 10-6 g/m2/day and good mechanical reliability at a bending radius of 30 mm corresponding to 0...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28718278/matrix-stiffness-differentially-regulates-cellular-uptake-behavior-of-nanoparticles-in-two-breast-cancer-cell-lines
#19
Yu Wang, Tao Gong, Zhirong Zhang, Yao Fu
Matrix stiffness regulates cell behavior in various biological contexts. In breast tumors, the deposition of extracellular matrix (ECM) correlates with increasing matrix stiffness and poor survival. Nanoparticulate carriers represent a promising therapeutic vehicle for disease diagnosis and efficient anticancer drug delivery. However, how matrix stiffness influences cellular uptake of nanoparticle remains largely unexplored. Here, we selected photopolymerized polyacrylamide gels with varying stiffness as model substrates, and studied the impact of matrix stiffness on cell morphology, nanoparticle uptake efficiency in two representative breast cancer cell lines with varying invasiveness, i...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28718012/implant-decontamination-with-phosphoric-acid-during-surgical-peri-implantitis-treatment-a-rct
#20
Diederik F M Hentenaar, Yvonne C M De Waal, Hans Strooker, Henny J A Meijer, Arie-Jan Van Winkelhoff, Gerry M Raghoebar
BACKGROUND: Peri-implantitis is known as an infectious disease that affects the peri-implant soft and hard tissue. Today, scientific literature provides very little evidence for an effective intervention protocol for treatment of peri-implantitis. The aim of the present randomized controlled trial is to evaluate the microbiological and clinical effectiveness of phosphoric acid as a decontaminating agent of the implant surface during surgical peri-implantitis treatment. METHODS: Peri-implantitis lesions were treated with resective surgical treatment aimed at peri-implant granulation tissue removal, bone recontouring, and pocket elimination...
December 2017: International Journal of Implant Dentistry
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