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https://www.readbyqxmd.com/read/28075595/adsorption-of-small-cationic-nanoparticles-onto-large-anionic-particles-from-aqueous-solution-a-model-system-for-understanding-pigment-dispersion-and-the-problem-of-effective-particle-density
#1
Shannon M North, Elizabeth R Jones, Gregory N Smith, Oleksandr O Mykhaylyk, Tom Annable, Steven P Armes
This work focuses on the use of copolymer nanoparticles as a dispersant for a model pigment (silica). Reversible addition-fragmentation chain transfer (RAFT) alcoholic dispersion polymerization was used to synthesize sterically stabilized diblock copolymer nanoparticles. The steric stabilizer block was poly(2-dimethylamino)ethyl methacrylate) [PDMA] while the core-forming block was poly(benzyl methacrylate) [PBzMA]. The mean degrees of polymerization for the PDMA and PBzMA blocks were 71 and 100, respectively...
January 11, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28068435/adaptive-optics-reveals-photoreceptor-abnormalities-in-diabetic-macular-ischemia
#2
Peter L Nesper, Fabio Scarinci, Amani A Fawzi
Diabetic macular ischemia (DMI) is a phenotype of diabetic retinopathy (DR) associated with chronic hypoxia of retinal tissue. The goal of this prospective observational study was to report evidence of photoreceptor abnormalities using adaptive optics scanning laser ophthalmoscopy (AOSLO) in eyes with DR in the setting of deep capillary plexus (DCP) non-perfusion. Eleven eyes from 11 patients (6 women, age 31-68), diagnosed with DR without macular edema, underwent optical coherence tomography angiography (OCTA) and AOSLO imaging...
2017: PloS One
https://www.readbyqxmd.com/read/28064506/simultaneous-analysis-of-3-mcpd-and-1-3-dcp-in-asian-style-sauces-using-quechers-extraction-and-gas-chromatography-triple-quadrupole-mass-spectrometry
#3
Susan Genualdi, Patricia Jean Nyman, Lowri S deJager
Acid hydrolyzed vegetable protein (aHVP) is used for flavoring a wide variety of foods and also in the production of non-fermented soy sauce. During the production of aHVP, chloropropanols including 3-monochloropropane-1,2-diol (3-MCPD) and 1,3 dichloropropane-2-ol (1,3-DCP) can be formed through the reaction of the hydrochloric acid catalyst and residual fat and the reaction of 3-MCPD with acetic acid, respectively. 3-MCPD is a carcinogen and 1,3-DCP has been classified as a genotoxic carcinogen. The European Union (EU) has set a maximum concentration of 0...
January 8, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28063298/a-novel-z-scheme-bipo4-bi2o2-oh-no3-heterojunction-structured-hybrid-for-synergistic-photocatalysis
#4
Guoshuai Liu, Shijie You, Hong Huang, Ming Ma, Nanqi Ren
Photocatalysis has been gaining a growing popularity in water treatment, and their engineered applications inspire the development of effective photocatalyst materials. To develop photocatalyst that is effective for degradation of organic pollutants, we fabricate a novel direct solid Z-scheme BiPO4-Bi2O2(OH)(NO3) (BPO-BHN) heterojunction structured hybrid. The results demonstrate an enhanced photocatalytic activity of BPO-BHN to produce OH radicals, according to diffuse reflectance spectroscopy (DRS), electron spin-resonance resonance (ESR), photoelectrochemical measurements, and theoretical calculation results...
December 23, 2016: Chemosphere
https://www.readbyqxmd.com/read/28063096/feasibility-of-in-vivo-three-dimensional-t-2-mapping-using-dicarboxy-proxyl-and-cw-epr-based-single-point-imaging
#5
Harue Kubota, Denis A Komarov, Hironobu Yasui, Shingo Matsumoto, Osamu Inanami, Igor A Kirilyuk, Valery V Khramtsov, Hiroshi Hirata
OBJECTIVES: The aim of this study was to demonstrate the feasibility of in vivo three-dimensional (3D) relaxation time T 2(*) mapping of a dicarboxy-PROXYL radical using continuous-wave electron paramagnetic resonance (CW-EPR) imaging. MATERIALS AND METHODS: Isotopically substituted dicarboxy-PROXYL radicals, 3,4-dicarboxy-2,2,5,5-tetra((2)H3)methylpyrrolidin-(3,4-(2)H2)-(1-(15)N)-1-oxyl ((2)H,(15)N-DCP) and 3,4-dicarboxy-2,2,5,5-tetra((2)H3)methylpyrrolidin-(3,4-(2)H2)-1-oxyl ((2)H-DCP), were used in the study...
January 6, 2017: Magma
https://www.readbyqxmd.com/read/28061932/biodegradation-of-2-4-dichlorophenol-in-packed-bed-biofilm-reactor-effect-of-hydraulic-retention-time-biogenic-substrate-and-loading-rate
#6
Bhishma P Patel, Arvind Kumar
  The removal of 2,4-dichlorophenol (2,4-DCP) by a pure culture of Bacillus endophyticus strain immobilized on ceramic balls was studied in a packed bed biofilm reactor (PBBR). The biodegradation of 2,4-DCP was studied in fed-batch and continuous mode and the effect of different parameters such as hydraulic retention time (HRT), biogenetic substrate concentration, and loading rate on the removal of 2,4-DCP were evaluated. Field emission scanning electron microscope (FESEM) results established the biofilm formation on the ceramic beads...
December 1, 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28038835/multi-template-imprinted-polymers-for-simultaneous-selective-solid-phase-extraction-of-six-phenolic-compounds-in-water-samples-followed-by-determination-using-capillary-electrophoresis
#7
Wenhui Lu, Xiaoyan Wang, Xiaqing Wu, Dongyan Liu, Jinhua Li, Lingxin Chen, Xinshen Zhang
Novel multi-template molecularly imprinted polymers (mt-MIPs) with six phenolic compounds as the template, namely phenol, 4-chlorophenol (4-CP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,4-dichlorophenol (2,4-DCP), 2-chlorophenol (2-CP) and 2,6-dichlorophenol (2,6-DCP), were prepared by precipitation polymerization and used as the adsorbents of solid-phase extraction (SPE), and coupled with capillary electrophoresis (CE) for the simultaneous selective extraction, separation and determination of trace phenolic compounds in water samples...
December 23, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28028411/diaphyseal-fractures-of-the-forearm-in-adults-plating-or-intramedullary-nailing-is-a-better-option-for-the-treatment
#8
Tabet A Al-Sadek, Desislav Niklev, Ahmed Al-Sadek
BACKGROUND: Fractures of the radius and ulna occupy a large field of the modern traumatology. Therefore, these fractures are a major subject in modern orthopaedics and traumatology. The study of the mechanisms of the trauma, and the pathophysiological changes that occur are of great importance for the development of ever more efficient and varied ways of the treatment and prophylactics of this type of fracture. AIM: The aim of this paper was to study the pattern of the diaphyseal fractures of the forearm in adults, to decide the modalities of surgical management, to observe the period of fracture healing clinically and radiologically, as well to study the rehabilitation of the patients...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28027144/orthopaedic-surgery-in-dystonic-cerebral-palsy
#9
Francesco C Blumetti, Jenny Chia Ning Wu, Federica Barzi, Matthias W Axt, Mary-Clare Waugh, Paulo Selber
BACKGROUND: Outcomes after orthopaedic interventions in patients with dystonic cerebral palsy (DCP) are historically regarded as unpredictable. This study aims to evaluate the overall outcome of orthopaedic surgery in children with DCP. METHOD: Children with DCP who underwent lower limb orthopaedic surgery with a minimum follow-up of 12 months were included. Data collected included age at time of surgery, surgical procedures performed, Gross Motor Function Classification System (GMFCS) level, and Barry Albright Dystonia Scale (BADS) score...
December 23, 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27993053/exceptional-visible-light-activities-of-tio2-coupled-n-doped-porous-perovskite-lafeo3-for-2-4-dichlorophenol-decomposition-and-co2-conversion
#10
Muhammad Humayun, Yang Qu, Fazal Raziq, Rui Yan, Zhijun Li, Xuliang Zhang, Liqiang Jing
In this work, TiO2-coupled N-doped porous perovskite-type LaFeO3 nanocomposites as highly efficient, cheap, stable, and visible-light photocatalysts have successfully been prepared via wet chemical processes. It is shown that the amount-optimized nanocomposite exhibits exceptional visible-light photocatalytic activities for 2,4-dichlorophenol (2,4-DCP) degradation by ∼3-time enhancement and for CO2 conversion to fuels by ∼4-time enhancement, compared to the resulting porous LaFeO3 with rather high photoactivity due to its large surface area...
December 20, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27992673/a-metal-free-non-conjugated-polymer-for-solar-photocatalysis
#11
Julia Perez-Prieto, Rafael Irigoyen, Maria Gonzalez-Bejar, Eduardo Pino, Jose B Proal-Nájera
Heterogeneous catalysts that can absorb light in the solar range are ideal for green photocatalysis. Recently, attention has been directed towards the generation of novel solar-light photocatalysts, in particular metal-free polymers. We demonstrate here that a metal-free, non-conjugated, anthraquinone-based copolymer (COP) with strong absorption in the visible is effective as sunlight heterogeneous photocatalyst. As a proof of concept it has been used to produce mineralization of 2,5-dichlorophenol (2,5-DCP) in water under air and sunlight irradiation...
December 19, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27982005/what-s-in-a-name-nominative-determinism-in-the-uk-dental-workforce
#12
J Sleigh
Background Nominative determinism describes the theory that people are more likely to pursue careers that are connected to their names. Compelling research has been carried out across the medical professions that provides strong evidence for this phenomenon, but as yet its applicability to the UK dental workforce remains unknown.Aim The aim of this study was to establish the prevalence of dentally-related surnames in the UK dental workforce (dentists and dental care professionals) and compare this to the UK population...
December 16, 2016: British Dental Journal
https://www.readbyqxmd.com/read/27979250/%C3%AE-tocopherol-loaded-niosome-prepared-by-heating-method-and-its-release-behavior
#13
Ladan Basiri, Ghadir Rajabzadeh, Aram Bostan
α-Tocopherol-loaded niosome was developed using modified heating method. The influence of surfactants (Span60 and Tween60) in different mole ratios, presence or absence of cholesterol (Chol) and dicetyl phosphate (DCP) as well as different concentration of α-tocopherol (α-TOC) on mean size, polydispersity index, zeta potential and entrapment efficiency (EE) was evaluated. The results showed that α-TOC loaded niosomes exhibited a small mean size (73.85±0.6-186±0.58nm), narrow size distribution and high EE (61...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27941912/quantitative-determination-and-toxicity-evaluation-of-2-4-dichlorophenol-using-poly-eosin-y-hydroxylated-multi-walled-carbon-nanotubes-modified-electrode
#14
Xiaolin Zhu, Kexin Zhang, Chengzhi Wang, Jiunian Guan, Xing Yuan, Baikun Li
This study aimed at developing simple, sensitive and rapid electrochemical approach to quantitatively determine and assess the toxicity of 2,4-dichlorophenol (2,4-DCP), a priority pollutant and has potential risk to public health through a novel poly(eosin Y, EY)/hydroxylated multi-walled carbon nanotubes composite modified electrode (PEY/MWNTs-OH/GCE). The distinct feature of this easy-fabricated electrode was the synergistic coupling effect between EY and MWNTs-OH that enabled a high electrocatalytic activity to 2,4-DCP...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27936479/the-galad-scoring-algorithm-based-on-afp-afp-l3-and-dcp-significantly-improves-detection-of-bclc-early-stage-hepatocellular-carcinoma
#15
J Best, H Bilgi, D Heider, C Schotten, P Manka, S Bedreli, M Gorray, J Ertle, L A van Grunsven, A Dechêne
Background: Hepatocellular carcinoma (HCC) is one of the leading causes of death in cirrhotic patients worldwide. The detection rate for early stage HCC remains low despite screening programs. Thus, the majority of HCC cases are detected at advanced tumor stages with limited treatment options. To facilitate earlier diagnosis, this study aims to validate the added benefit of the combination of AFP, the novel biomarkers AFP-L3, DCP, and an associated novel diagnostic algorithm called GALAD. Material and methods: Between 2007 and 2008 and from 2010 to 2012, 285 patients newly diagnosed with HCC and 402 control patients suffering from chronic liver disease were enrolled...
December 2016: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/27901134/enhanced-visible-light-photocatalysis-over-pt-loaded-bi2o3-an-insight-into-its-photogenerated-charge-separation-transfer-and-capture
#16
Kailun Yang, Jia Li, Yang Peng, Jun Lin
In this study, we have fabricated crystalline metallic Pt nanoparticles-loaded α-Bi2O3 microrods (Pt/Bi2O3) using a precipitation method, followed by an impregnation-reduction deposition route. The Pt/Bi2O3 catalysts have much higher photocatalytic activities than that of the pure Bi2O3 for the degradation of RhB and 2,4-DCP under visible light irradiation. The photogenerated charge separation, transfer, and capture in the photocatalysis of Pt/Bi2O3 were investigated in detail according to the various characterizations and analyses of the photogenerated active species and H2O2...
December 21, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27900094/malignant-transformation-of-hepatocellular-adenoma-with-bone-marrow-metaplasia-arising-in-glycogen-storage-disease-type-i-a-case-report
#17
Tomohiro Iguchi, Motoyuki Yamagata, Takashi Sonoda, Kimihiko Yanagita, Tetsuhiro Fukahori, Eiji Tsujita, Shinichi Aishima, Yoshinao Oda, Yoshihiko Maehara
Malignant transformation of hepatocellular adenoma (HA) is relatively rare and has been reported to be associated with dysregulation of the β-catenin pathway. The presence of bone marrow metaplasia in HA is an uncommon histological characteristic. The current report presents the case of a 46-year-old woman with glycogen storage disease type I (von Gierke's disease) who underwent resection of hepatocellular carcinoma (HCC) arising in a HA with associated bone marrow metaplasia producing three series of hematopoietic cells...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27899590/different%C3%A2-enhancer-classes-in-drosophila-bind-distinct-architectural-proteins-and-mediate-unique-chromatin-interactions-and-3d-architecture
#18
Caelin Cubeñas-Potts, M Jordan Rowley, Xiaowen Lyu, Ge Li, Elissa P Lei, Victor G Corces
Eukaryotic gene expression is regulated by enhancer-promoter interactions but the molecular mechanisms that govern specificity have remained elusive. Genome-wide studies utilizing STARR-seq identified two enhancer classes in Drosophila that interact with different core promoters: housekeeping enhancers (hkCP) and developmental enhancers (dCP). We hypothesized that the two enhancer classes are occupied by distinct architectural proteins, affecting their enhancer-promoter contacts. By evaluating ChIP-seq occupancy of architectural proteins, typical enhancer-associated proteins, and histone modifications, we determine that both enhancer classes are enriched for RNA Polymerase II, CBP, and architectural proteins but there are also distinctions...
November 28, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27898981/macular-features-in-retinitis-pigmentosa-correlations-among-ganglion-cell-complex-thickness-capillary-density-and-macular-function
#19
Lisa Toto, Enrico Borrelli, Rodolfo Mastropasqua, Alfonso Senatore, Luca Di Antonio, Marta Di Nicola, Paolo Carpineto, Leonardo Mastropasqua
Purpose: To investigate correlations among macular ganglion cell complex (GCC) layer thickness, macular capillary density, and macular function in patients affected by retinitis pigmentosa (RP). Methods: Fourteen patients (28 eyes) with previous diagnosis of RP were enrolled. The diagnosis of these conditions was made based on both clinical features and electrophysiological examination. All patients underwent a complete ophthalmologic examination, including optical coherence tomography angiography (OCTA) and multifocal electroretinogram (mfERG)...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27896817/lack-of-in-vivo-mutagenicity-of-1-2-dichloropropane-and-dichloromethane-in-the-livers-of-gpt-delta-rats-administered-singly-or-in-combination
#20
Tadashi Hirata, Young-Man Cho, Takeshi Toyoda, Jun-Ichi Akagi, Isamu Suzuki, Akiyoshi Nishikawa, Kumiko Ogawa
1,2-Dichloropropane (1,2-DCP) and dichloromethane (DCM) are possible causative agents associated with the development of cholangiocarcinoma in employees working in printing plant in Osaka, Japan. However, few reports have demonstrated an association between these agents and cholangiocarcinoma in rodent carcinogenicity studies. Moreover, the combined effects of these compounds have not been fully elucidated. In the present study, we evaluated the in vivo mutagenicity of 1,2-DCP and DCM, alone or combined, in the livers of gpt delta rats...
November 28, 2016: Journal of Applied Toxicology: JAT
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