184500

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Showing 1-30 of 149 results for "184500" within Papers

Chromatographic behavior of small organic compounds in low-temperature high-performance liquid chromatography using liquid carbon dioxide as the mobile phase.

Tomohiro Motono et al.

Journal of separation science, 38(14), 2381-2386 (2015-04-29)

Low-temperature high-performance liquid chromatography, in which a loop injector, column, and detection cell were refrigerated at -35ºC, using liquid carbon dioxide as the mobile phase was developed. Small organic compounds (polyaromatic hydrocarbons, alkylbenzenes, and quinones) were separated by low-temperature high-performance

Layered titanium diboride: towards exfoliation and electrochemical applications.

Chee Shan Lim et al.

Nanoscale, 7(29), 12527-12534 (2015-07-04)

Layered transition metal diborides (TMDB), amongst other refractory metal borides, are commonly employed for material fabrication such as wear- and corrosion-resistant coatings due to their impressive chemical stability and thermal conductivity. In spite of the wide scope of studies carried

Low-temperature plasma ionization differential ion mobility spectrometry.

Andriy Kuklya et al.

Analytical chemistry, 87(17), 8932-8940 (2015-08-13)

A low-temperature plasma (LTP) was used as an ionization source for differential ion mobility spectrometry (DMS) for the first time. This ionization source enhances the potential of DMS as a miniaturized system for on-site rapid monitoring. The effects of experimental

Competitive solubilization of naphthalene and pyrene in various micellar systems.

Rohi Masrat et al.

Journal of hazardous materials, 244-245, 662-670 (2012-11-28)

Cosolubilization of polycyclic aromatic hydrocarbons (PAHs) (naphthalene and pyrene) has been studied in surfactant systems of varying nature of their head-group viz. nonionic: Brij30 and Brij56, cationic: DDEAB and CTAB and anionic: SDS. Solubilization capacity of micelles was quantified in

Extraction of bioavailable contaminants from marine sediments: an approach to reducing toxicity using adsorbent parcels.

Freya Goodsir et al.

Marine pollution bulletin, 72(1), 250-256 (2013-05-29)

This paper demonstrates an approach to reducing acute toxicity in marine sediments using adsorbent parcels. Acute toxicity tests were carried using the marine amphipod Corophium volutator. Marine sediments were spiked with two know contaminants tributyltin and naphthalene and then treated

Severe haemolytic anaemia due to ingestion of naphthalene (mothball) containing coconut oil.

Md Mujibur Rahman et al.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP, 22(11), 740-741 (2012-11-14)

Naphthalene, a widely used industrial and household chemical, has rarely been an agent of poisoning worldwide. Severe haemolysis from naphthalene poisoning is rare and can be a challenge to clinicians. We report a 22-year-old female, who accidentally ingested naphthalene mixed

Predictive three-dimensional quantitative structure-activity relationship of cytochrome P450 1A2 inhibitors.

Laura E Korhonen et al.

Journal of medicinal chemistry, 48(11), 3808-3815 (2005-05-27)

The purpose of this study was to determine the cytochrome P450 1A2 (CYP1A2) inhibition potencies of structurally diverse compounds to create a comprehensive three-dimensional quantitative structure-activity relationship (3D-QSAR) model of CYP1A2 inhibitors and to use this model to predict the

High-Sensitivity Surface-Enhanced Raman Scattering (SERS) Substrate Based on a Gold Colloid Solution with a pH Change for Detection of Trace-Level Polycyclic Aromatic Hydrocarbons in Aqueous Solution.

Xiaofeng Shi et al.

Applied spectroscopy, 69(5), 574-579 (2015-04-25)

In this study, a gold colloid solution whose parameters were optimized, and without any surfactants, was developed as a surface-enhanced Raman scattering (SERS) substrate for the detection of trace-level polycyclic aromatic hydrocarbons (PAHs). A gold colloid solution with 57 nm

Dual fatty acid synthase and HER2 signaling blockade shows marked antitumor activity against breast cancer models resistant to anti-HER2 drugs.

Adriana Blancafort et al.

PloS one, 10(6), e0131241-e0131241 (2015-06-25)

Blocking the enzyme Fatty Acid Synthase (FASN) leads to apoptosis of HER2-positive breast carcinoma cells. The hypothesis is that blocking FASN, in combination with anti-HER2 signaling agents, would be an effective antitumor strategy in preclinical HER2+ breast cancer models of

[Recent advances in bacterial biodegradation of naphthalene, phenanthrene by bacteria: a review].

Dan Zhang et al.

Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 26(6), 726-734 (2010-09-08)

Polycyclic aromatic hydrocarbons (PAHs) are toxic pollutants that exist extensively in the environment. Microbial degradation is the main pathway of PAHs eradication in natural environment and therefore is of importance to investigate. Advancement has been made in recent years regarding

Physiological roles of mycothiol in detoxification and tolerance to multiple poisonous chemicals in Corynebacterium glutamicum.

Ying-Bao Liu et al.

Archives of microbiology, 195(6), 419-429 (2013-04-26)

Mycothiol (MSH) plays important roles in maintaining cytosolic redox homeostasis and in adapting to reactive oxygen species in the high-(G + C)-content Gram-positive Actinobacteria. However, its physiological roles are ill defined compared to glutathione, the functional analog of MSH in Gram-negative bacteria

Transcriptional responses in the rat nasal epithelium following subchronic inhalation of naphthalene vapor.

H J Clewell et al.

Toxicology and applied pharmacology, 280(1), 78-85 (2014-07-01)

Male and female Fischer 344 rats were exposed to naphthalene vapors at 0 (controls), 0.1, 1, 10, and 30ppm for 6h/d, 5 d/wk, over a 90-day period. Following exposure, the respiratory epithelium and olfactory epithelium from the nasal cavity were

Probing bile salt aggregates by fluorescence quenching.

Ju C and Bohne C.

Photochemistry and Photobiology, 63(1), 60-67 (1996)

Effects of LB broth, naphthalene concentration, and acetone on the naphthalene degradation activities by Pseudomonas putida G7.

Su-Yun Chang et al.

Water environment research : a research publication of the Water Environment Federation, 87(1), 61-67 (2015-01-30)

Luria-Bertani broth and acetone were usually used in naphthalene degradation experiments as nutrient and solvent. However, their effect on the degradation was seldom mentioned. In this work, we investigated the effect of LB, naphthalene concentration, and acetone on the degradation

Characterization of a novel model incorporating airway epithelial damage and related fibrosis to the pathogenesis of asthma.

Simon G Royce et al.

Laboratory investigation; a journal of technical methods and pathology, 94(12), 1326-1339 (2014-09-30)

Asthma develops from injury to the airways/lungs, stemming from airway inflammation (AI) and airway remodeling (AWR), both contributing to airway hyperresponsiveness (AHR). Airway epithelial damage has been identified as a new etiology of asthma but is not targeted by current

Liquid-phase exfoliation of graphene in organic solvents with addition of naphthalene.

Jiasheng Xu et al.

Journal of colloid and interface science, 418, 37-42 (2014-01-28)

We report a facile method for the production of graphene sheets through liquid-phase exfoliation of graphite in organic solvents with addition of naphthalene. The production yield of graphene is significantly increased with the addition of naphthalene in most solvents tested

Reparative capacity of airway epithelium impacts deposition and remodeling of extracellular matrix.

Joshua C Snyder et al.

American journal of respiratory cell and molecular biology, 40(6), 633-642 (2008-11-04)

Defective epithelial repair in the setting of chronic lung disease has been suggested to contribute to uncontrolled extracellular matrix (ECM) deposition and development of fibrosis. We sought to directly test this hypothesis through gene expression profiling of total lung RNA

Design, modification and 3D QSAR studies of novel naphthalin-containing pyrazoline derivatives with/without thiourea skeleton as anticancer agents.

Wen Yang et al.

Bioorganic & medicinal chemistry, 21(5), 1050-1063 (2013-02-09)

Two series of novel naphthalin-containing pyrazoline derivatives C1-C14 and D1-D14 have been synthesized and evaluated for their EGFR/HER-2 inhibitory and anti-proliferation activities. Compound D14 displayed the most potent activity against EGFR and A549 cell line (IC(50)=0.05 μM and GI(50)=0.11 μM)

Electrochemical in situ fabrication of titanium dioxide-nanosheets on a titanium wire as a novel coating for selective solid-phase microextraction.

Yi Li et al.

Journal of chromatography. A, 1358, 60-67 (2014-07-20)

A novel TiO2-nanosheets coated fiber for solid-phase microextraction (SPME) was fabricated by anodization of Ti wire substrates in ethylene glycol with concentrated NH4F. The in situ fabricated TiO2-nanosheets were densely embedded into Ti substrates with about 1μm long, 300nm wide

Naphthalene complexation by β-cyclodextrin: influence of added short chain branched and linear alcohols.

Evans CH, et al.

Journal of Inclusion Phenomena and Macrocyclic Chemistry, 38(1-4), 381-396 (2000)

Removal effectiveness and mechanisms of naphthalene and heavy metals from artificially contaminated soil by iron chelate-activated persulfate.

Dickson Y S Yan et al.

Environmental pollution (Barking, Essex : 1987), 178, 15-22 (2013-03-26)

The effectiveness and mechanisms of naphthalene and metal removal from artificially contaminated soil by FeEDTA/FeEDDS-activated persulfate were investigated through batch experiments. Using FeEDTA-activated persulfate, higher naphthalene removal from the soil at 7 h was achieved (89%), compared with FeEDDS-activated persulfate (75%).

Diversity of organotrophic bacteria, activity of dehydrogenases and urease as well as seed germination and root growth Lepidium sativum, Sorghum saccharatum and Sinapis alba under the influence of polycyclic aromatic hydrocarbons.

Aneta Lipińska et al.

Environmental science and pollution research international, 22(23), 18519-18530 (2015-09-06)

Polycyclic aromatic hydrocarbons are organic compounds with highly toxic, carcinogenic, and mutagenic properties, which adversely affect the basic biological parameters of the soil, including the count of microorganisms, and the enzymatic activity. In addition to disturbances to the biological activity

A simple but accurate potential for the naphthalene-argon complex: applications to collisional energy transfer and matrix isolated IR spectroscopy.

F Calvo et al.

The Journal of chemical physics, 138(3), 034305-034305 (2013-01-25)

An explicit polarizable potential for the naphthalene-argon complex has been derived assuming only atomic contributions, aiming at large scale simulations of naphthalene under argon environment. The potential was parametrized from dedicated quantum chemical calculations at the CCSD(T) level, and satisfactorily

Determination of polycyclic aromatic hydrocarbons using lab on valve dispersive liquid-liquid microextraction coupled to high performance chromatography.

M Fernández et al.

Talanta, 138, 190-195 (2015-04-13)

In this work, dispersive liquid-liquid microextraction (DLLME) method was applied for high performance liquid chromatography (HPLC) determination of 15 PAHs in aqueous matrices.The extraction procedure was automated using a system of multisyringe flow injection analysis coupled to HPLC instrument with

Effect of central ventilation and air conditioner system on the concentration and health risk from airborne polycyclic aromatic hydrocarbons.

Jinze Lv et al.

Journal of environmental sciences (China), 25(3), 531-536 (2013-08-08)

Central ventilation and air conditioner systems are widely utilized nowadays in public places for air exchange and temperature control, which significantly influences the transfer of pollutants between indoors and outdoors. To study the effect of central ventilation and air conditioner

Radiolytic studies of naphthalene in the presence of water.

Y Keheyan et al.

Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life, 42(2-3), 179-186 (2012-06-05)

Naphthalene is an interesting candidate to study in the framework of organic delivery to planetary surfaces as well as in the origin of life. Additionally, naphthalene is of environmental interest, because of its chronic and acute effects on living systems

Spectroscopic Properties of Naphthalene on the Surface of Ice Grains Revisited: A Combined Experimental-Computational Approach.

Ján Krausko et al.

The journal of physical chemistry. A, 119(32), 8565-8578 (2015-07-15)

An experimental-computational method is used to investigate the spectroscopic behavior of naphthalene on the surface of ice grains. UV-vis diffuse reflectance and fluorescence spectroscopies of naphthalene combined with DFT and ADC(2) calculations provide evidence for the occurrence of excited-state associates.

Influence of nitrogen excited species on the destruction of naphthalene in nitrogen and air using surface dielectric barrier discharge.

Ayman A Abdelaziz et al.

Journal of hazardous materials, 246-247, 26-33 (2013-01-03)

The destruction of naphthalene, as representative polycyclic aromatic hydrocarbons, by surface dielectric barrier discharge is investigated in air as well as dry and humidified nitrogen at ambient temperature. Naphthalene destruction efficiency is evaluated in terms of chemical change vis-a-vis energy

1,2-naphthoquinone stimulates lipid peroxidation and cholesterol domain formation in model membranes.

Robert F Jacob et al.

Investigative ophthalmology & visual science, 54(12), 7189-7197 (2013-10-17)

Naphthalene induces cataract formation through the accumulation of its reactive metabolite, 1,2-naphthoquinone (1,2-NQ), in the ocular lens. 1,2-NQ increases lens protein oxidation and disrupts fiber cell membrane function; however, the association of these effects with changes in membrane structure is

Synthesis of a tetrasubstituted tetrahydronaphthalene scaffold for α-helix mimicry via a MgBr2-catalyzed Friedel-Crafts epoxide cycloalkylation.

Devan Naduthambi et al.

Organic letters, 15(18), 4892-4895 (2013-09-11)

α-Helices are ubiquitous protein recognition elements that bind diverse biomolecular targets. The synthesis of a small molecule scaffold to present the side chains of an α-helix is described. The 1,3,5,7-tetrasubstituted 1,2,3,4-tetrahydronaphthalene scaffold, providing mimicry of the i, i+3, and i+4

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