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https://www.readbyqxmd.com/read/28436440/a-metallic-molybdenum-dioxide-with-high-stability-for-surface-enhanced-raman-spectroscopy
#1
Qiqi Zhang, Xinshi Li, Qiang Ma, Qing Zhang, Hua Bai, Wencai Yi, Jingyao Liu, Jing Han, Guangcheng Xi
Compared with noble metals, semiconductors with surface plasmon resonance effect are another type of SERS substrate materials. The main obstacles so far are that the semiconducting materials are often unstable and easy to be further oxidized or decomposed by laser irradiating or contacting with corrosive substances. Here, we report that metallic MoO2 can be used as a SERS substrate to detect trace amounts of highly risk chemicals including bisphenol A (BPA), dichloropheno (DCP), pentachlorophenol (PCP) and so on...
April 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28434228/rapid-biodegradation-of-the-herbicide-2-4-dichlorophenoxyacetic-acid-by-cupriavidus-gilardii-t-1
#2
Xiangwei Wu, Wenbo Wang, Junwei Liu, Dandan Pan, Xiaohui Tu, Pei Lv, Yi Wang, Haiqun Cao, Yawen Wang, Rimao Hua
Phytotoxicity and environmental pollution of residual herbicides have caused much public concern during the past several decades. An indigenous bacterial strain capable of degrading 2,4-dichlorophenoxyacetic acid (2,4-D), designated T-1, was isolated from soybean field soil and identified as Cupriavidus gilardii. The strain T-1 degraded 2,4-D 3.39 times faster than the model strain Cupriavidus necator JMP134. T-1 could also efficiently degrade 2-methyl-4-chloro-phenoxyacetic acid (MCPA), MCPA isooctyl ester, and 2-(2,4-dicholrophenoxy)-propionic acid (2,4-DP)...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28418226/serum-monomeric-laminin-%C3%AE-2-as-a-novel-biomarker-for-hepatocellular-carcinoma
#3
Hirofumi Kiyokawa, Hiroshi Yasuda, Ritsuko Oikawa, Chiaki Okuse, Nobuyuki Matsumoto, Hiroki Ikeda, Tsunamasa Watanabe, Hiroyuki Yamamoto, Fumio Itoh, Takehito Otsubo, Toru Yoshimura, Eisaku Yoshida, Masatoshi Nakagawa, Naohiko Koshikawa, Motoharu Seiki
The diagnosis of hepatocellular carcinoma (HCC) in the early stages is important for successful clinical management. Laminin (Ln)-γ2 expression has been reported in various types of malignant carcinomas. We recently developed a highly sensitive method to measure serum monomeric Ln-γ2 levels using a fully automated chemiluminescent immunoassay (CLIA). Using our CLIA, we evaluated its diagnostic value in sera from patients with chronic liver disease (CLD) and patients with hepatocellular carcinoma (HCC). Serum alpha-fetoprotein (AFP) and des-gamma-carboxy prothrombin (DCP) were also examined in these subjects...
April 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28416262/use-of-dilute-ammonia-gas-for-treatment-of-1-2-3-trichloropropane-and-explosives-contaminated-soils
#4
Charles G Coyle, Scott A Waisner, Victor F Medina, Chris S Griggs
Laboratory studies were performed to test a novel reactive gas process for in-situ treatment of soils containing halogenated propanes or explosives. A soil column study, using a 5% ammonia-in-air mixture, established that the treatment process can increase soil pH from 7.5 to 10.2. Batch reactor experiments were performed to demonstrate contaminant destruction in sealed jars exposed to ammonia. Comparison of results from batch reactors that were, and were not, exposed to ammonia demonstrated reductions in concentrations of 1,2,3-trichloropropane (TCP), 1,3-dichloropropane (1,3-DCP), 1,2-dicholoropropane (1,2-DCP) and dibromochloropropane (DBCP) that ranged from 34 to 94%...
April 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28400062/adm-guidance-ceramics-guidance-to-the-use-of-fractography-in-failure-analysis-of-brittle-materials
#5
Susanne S Scherrer, Ulrich Lohbauer, Alvaro Della Bona, Alessandro Vichi, Michael J Tholey, J Robert Kelly, Richard van Noort, Paulo Francisco Cesar
OBJECTIVES: To provide background information and guidance as to how to use fractography accurately, a powerful tool for failure analysis of dental ceramic structures. METHODS: An extended palette of qualitative and quantitative fractography is provided, both for in vivo and in vitro fracture surface analyses. As visual support, this guidance document will provide micrographs of typical critical ceramic processing flaws, differentiating between pre- versus post sintering cracks, grinding damage related failures and occlusal contact wear origins and of failures due to surface degradation...
April 8, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28388705/retinal-microvasculature-and-visual-acuity-in-eyes-with-branch-retinal-vein-occlusion-imaging-analysis-by-optical-coherence-tomography-angiography
#6
Taku Wakabayashi, Tatsuhiko Sato, Chikako Hara-Ueno, Yoko Fukushima, Kaori Sayanagi, Nobuhiko Shiraki, Miki Sawa, Yasushi Ikuno, Hirokazu Sakaguchi, Kohji Nishida
Purpose: To investigate microvascular changes in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) in eyes with resolved branch retinal vein occlusion (BRVO) and their association with best-corrected visual acuity (BCVA). Methods: Eighty-five eyes (82 consecutive patients) with BRVO after resolution of the macular edema were retrospectively evaluated. All patients underwent optical coherence tomography angiography (OCTA) for assessment of microvascular changes, including capillary telangiectasia, microaneurysm, and disruption of the foveal avascular zone (FAZ)...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28384724/gap-in-capillary-perfusion-on-optical-coherence-tomography-angiography-associated-with-persistent-macular-edema-in-branch-retinal-vein-occlusion
#7
Kotaro Tsuboi, Yuichiro Ishida, Motohiro Kamei
Purpose: To evaluate correlations between persistent macular edema associated with branch retinal vein occlusion (BRVO) and the macular perfusion status in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) using optical coherence tomography angiography (OCTA). Methods: Retrospective, case-control study. Twenty patients with BRVO followed for 12 months or more were enrolled. Persistent macular edema was defined as central retinal thickness exceeding 300 μm that persisted or recurred less than 3 months after the final treatment...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28384634/poly-adp-ribose-polymerase-1-promotes-prothrombin-gene-transcription-and-produces-des-gamma-carboxy-prothrombin-in-hepatocellular-carcinoma
#8
Tatsuya Taniguchi, Kazuhiro Kishi, Tadahiko Nakagawa, Hironori Tanaka, Takahiro Tanaka, Tetsu Tomonari, Koichi Okamoto, Masahiro Sogabe, Hiroshi Miyamoto, Toshiya Okahisa, Naoki Muguruma, Mayumi Kajimoto, Ikuko Sagawa, Tetsuji Takayama
BACKGROUND AND AIM: Although des-gamma-carboxy prothrombin (DCP) is a well-known tumor marker for hepatocellular carcinoma (HCC), the mechanism of DCP production is unclear. This study aimed to investigate the mechanism how DCP is produced in HCC cells. METHODS: Levels of mRNA and DCP were analyzed by real-time polymerase chain reaction and electro-chemiluminescence immunoassay respectively. Secreted alkaline phosphatase (SEAP) expression vectors including deletion mutants of the prothrombin gene promoter were constructed for reporter gene assay...
April 7, 2017: Digestion
https://www.readbyqxmd.com/read/28380414/the-role-of-sirt1-in-diabetic-cardiomyopathy
#9
REVIEW
Hedyieh Karbasforooshan, Gholamreza Karimi
The prevalence of diabetes mellitus (DM) has been increasing worldwide. Diabetic cardiomyopathy (DCP) is the major risk for diabetes associated morbidity and mortality. Hyperglycemia and hyperinsulinemia play an indispensable role in underlying mechanisms of DCP. They increase advanced glycation end products (AGEs) following a series of events leading to myocardial damage and cardiomyopathy which include oxidative stress, increased inflammation, fibrosis, hypertrophy and apoptosis. SIRT1 is a nicotinamide adenosine dinucleotide (NAD)-dependent deacetylase that removes acetyl groups from proteins which can be implicated in DCP...
April 2, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28380243/biosorption-of-2-4-dichlorophenol-onto-turkish-sweetgum-bark-in-a-batch-system-equilibrium-and-kinetic-study
#10
Dilek Yıldız, Feyyaz Keskin, Ahmet Demirak
In this study, Turkish Sweetgum bark was used as a new biosorbent to investigate the removal of hazardous 2,4 dichlorophenol (2,4-DCP) from aqueous solutions in batch biosoption experiments. The effective usage of Turkish sweetgum bark is a meaningful work for environmental utilization of agricultural residues. The effects of experimental parameters like solution pH, contact time, initial concentration of adsorbate and amount of bisorbent dosage were investigated in a series of batch studies at 25 °C. Taguchi's Orthogonal Array (OA) analysis was used to find the best experimental parameters for the optimum design process in this study...
2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/28367567/the-shape-memory-effect-in-ionic-elastomers-fixation-through-ionic-interactions
#11
Antonio González-Jiménez, Marta A Malmierca, Pilar Bernal-Ortega, Pilar Posadas, Roberto Pérez-Aparicio, Ángel Marcos-Fernández, Patrick T Mather, Juan L Valentín
Shape-memory elastomers based on a commercial rubber cross-linked by both ionic and covalent bonds have been developed. The elastomeric matrix was a carboxylated nitrile rubber (XNBR) vulcanized with magnesium oxide (MgO) providing ionic interactions that form hierarchical structures. The so-named ionic transition is used as the unique thermal transition responsible for the shape-memory effect (SME) in these elastomers. These ionic interactions fix the temporary shape due to their behavior as dynamic cross-links with temperature changes...
April 19, 2017: Soft Matter
https://www.readbyqxmd.com/read/28357651/cancer-patients-control-preferences-in-decision-making-and-associations-with-patient-reported-outcomes-a-prospective-study-in-an-outpatient-cancer-center
#12
Markus Schuler, Jan Schildmann, Freya Trautmann, Leopold Hentschel, Beate Hornemann, Anke Rentsch, Gerhard Ehninger, Jochen Schmitt
PURPOSE: "Shared decision making" has been proposed as a prerequisite of patient-centered care. However, little is known on factors, which may influence cancer patients' decision control preferences (DCP) in routine care. This study investigated possible determinants of the patients' DCP with respect to patient characteristics and patient-reported outcomes (PROs). METHODS: Consecutive patients presenting at a comprehensive cancer center between May 2014 and October 2014 were offered a self-administered electronic questionnaire including standardized PRO measures and patients' DCP...
March 29, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28351537/determination-of-chlorinated-volatile-organic-compounds-in-polyamine-epichlorohydrin-solution-by-headspace-gas-chromatography
#13
Ning Yan, Xiao-Fang Wan, Xin-Sheng Chai, Run-Quan Chen
This study demonstrated a headspace gas chromatographic (HS-GC) method for the determination of residual epichlorohydrin (ECH) and the by-product 1,3-dichloro-2-propanol (DCP) in polyamine epichlorohydrin (PAE) solution. It was based on the vapor-liquid phase equilibrium of these analytes at 60°C for 30min in a closed headspace sample vial before GC measurement. It was found that matrix of the PAE solution had the effect on the headspace equilibrium of these species and therefore a standard addition must be applied in the method validation...
March 21, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28344090/isolation-characterization-and-bioactivities-of-the-polysaccharides-from-dicliptera-chinensis-l-juss
#14
Yourui Xu, Ya Gao, Mingli Zhong, Jun Li, Houkang Cao, Simao Huang, Riming Wei, Kefeng Zhang
The polysaccharides of Dicliptera chinensis (L.) Juss. (DCP-1 and DCP-2) were extracted and isolated using the methods of water extract-ethanol precipitate and sephadex column chromatography and characterized by gel permeation chromatography (GPC), Fourier transform infrared spectrometry (FT-IR) and gas chromatography (GC), respectively. The antioxidant activity of DCPs was evaluated by scavenging activity of DPPH, hydroxyl, superoxide anion and ABTS radical. Moreover, the anti-aging activity of DCP-2 was investigated using an aging model-induced by D-galactose (D-gal) in mice...
March 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28339715/determination-of-pre-cecal-phosphorus-digestibility-of-inorganic-phosphates-and-bone-meal-products-in-broilers
#15
J van Harn, J W Spek, C A van Vuure, M M van Krimpen
A broiler study was performed to determine the pre-cecal phosphorus (P) digestibility of 5 P sources, 3 from animal (Delfos, Calfos, and porcine bone meal) and 2 of inorganic (monocalcium phosphate [MCP] and dicalcium phosphate [DCP]) origin. Delfos is processed from bones resulting in a dicalcium phosphate product, and Calfos is processed from bones in which part of the gelatin is removed but in which the hydroxy-apatite matrix is preserved. During the first 14 d, birds were housed in floor pens bedded with wood shavings and received a commercial starter diet...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28330263/multi-substrate-biodegradation-of-chlorophenols-by-defined-microbial-consortium
#16
Bhishma P Patel, Arvind Kumar
In the present study, a defined mixed microbial consortium was investigated for their ability to utilize three different monochlorophenols (MCPs) and 2,4-DCP individually and in the mixture. None of the individual strains were able to utilize 3-CP and 4-CP, but when they were mixed to form defined consortium, they have shown great potential and degradation of high concentration of 3-CP and 4-CP. Spectrophotometric analysis of metabolites during MCPs degradation establishes the presence of 2-chloromaleylacetate...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330152/production-of-a-toxic-metabolite-in-2-4-d-resistant-gm-crop-plants
#17
Paul F Lurquin
This Note questions the safety of crop plants engineered with transgenes coding for the degradation of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) into its cytotoxic metabolite 2,4-dichlorophenol (2,4-DCP).
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28321038/distribution-of-1-2-dichloropropane-in-blood-and-other-tissues-of-rats-after-oral-administration
#18
Makoto Take, Tetsuya Takeuchi, Shigeyuki Hirai, Kenji Takanobu, Michiharu Matsumoto, Shoji Fukushima, Jun Kanno
The present investigation was undertaken to determine the distribution of 1,2-dichloropropane (DCP) in the blood, liver, kidney, lung, and abdominal fat of rats after oral administration. Male rats were orally administered 62 or 125 mg/kg body weight doses of DCP dissolved in corn oil by gavage, and the concentrations in the blood and tissues were measured. The DCP concentration in the abdominal fat was much greater than in the blood and other tissues. Twenty-four-hr after oral administration, DCP could still be detected in the blood and abdominal fat in the 62-mg/kg group, and in the blood, liver, kidney, lung, and abdominal fat in the 125-mg/kg group...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28318412/effects-of-lithium-and-2-4-dichlorophenol-on-zebrafish-circadian-rhythm-disorder-and-molecular-effects
#19
Bo Xiao, Li-Qiang Cui, Cheng Ding, Han Wang
The aim of this study was to investigate lithium and 2,4-dichlorophenol (2,4-DCP)-induced circadian rhythm disorder and their genome-wide effects in zebrafish. Zebrafish larvae were exposed to 250 ppm LiCl (n = 40) or 20 ppm 2,4-DCP. RNA was subsequently extracted and determined quantitatively. The mRNA levels of circadian clock-related genes, including clock1a, bmal1b, per2, and per1b, were determined. Microarray datasets were generated and the differentially expressed genes (DEGs) were identified. The mRNA levels of some upregulated and downregulated DEGs were examined by quantitative real-time polymerase chain reaction (RT-PCR)...
March 20, 2017: Zebrafish
https://www.readbyqxmd.com/read/28317222/standardized-total-tract-digestibility-of-phosphorus-in-various-inorganic-phosphates-fed-to-growing-pigs
#20
Woong Bi Kwon, Beob Gyun Kim
An experiment was conducted to determine the standardized total tract digestibility (STTD) of phosphorus (P) in five sources of inorganic phosphate fed to growing pigs, including dicalcium phosphate (DCP), monodicalcium phosphate (MDCP), monocalcium phosphate (MCP), tricalcium phosphate (TCP) and monosodium phosphate (MSP, reagent grade). Six barrows (42.4 ± 1.1 kg) individually housed in metabolism crates were allotted to a 6 × 6 Latin square design with six dietary treatments and six periods. Each experimental period consisted of a 4 day adaptation period and a 5 day collection period...
March 20, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
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