dichloromethane/атрофија

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Страна 1 од 23 резултати

Structure and stability of the [TCNE](2)(2-) dimers in dichloromethane solution: a computational study.

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The solution behavior of [TCNE](.-), which forms long-living pi-[TCNE]22- dimers, is computationally studied by B3LYP and MCQDPT/CASSCF(2,2) calculations (a multiconfigurational quasi-degenerate perturbative calculation using a CASSCF(2,2) wavefunction, which properly accounts for the dispersion

Axonal degeneration with unusual lesions of the myelin in an occupational neuropathy.

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A 35-year-old man had prolonged occupational exposure to lead carboxylate, triethylbenzene, xylene, and dichloromethane, when he developed a subacute predominantly sensory neuropathy. Ultrastructural examination of a peripheral nerve biopsy showed axonal degeneration and unusual lesions of the

NTP Toxicology and Carcinogenesis Studies of Dichloromethane (Methylene Chloride) (CAS No. 75-09-2) in F344/N Rats and B6C3F1 Mice (Inhalation Studies).

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Dichloromethane is widely used in industrial processes, food preparation, and agriculture. In industry, dichloromethane is used as a solvent in paint removers, degreasing agents, aerosol propellants, and triacetate solutions; as a blowing agent in flexible urethane foams; and as a process solvent in

Severe optic neuropathy caused by dichloromethane inhalation.

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OBJECTIVE In this paper, we report a case of severe optic neuropathy caused by dichloromethane inhalation. METHODS A 65-year-old man fell unconsciousness while cleaning a dichloromethane tank containing a small amount of dichloromethane (purity greater than 99%) and was transported to the emergency

Surface Treatments with Dichloromethane to Eliminate Printing Lines on Polycarbonate Components Printed by Fused Deposition Modelling Technology

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Additive manufacturing, framed within the Industry 4.0. concept, is one of the processes that has witnessed greater development in the last years. Within this subject fused deposition modelling (FDM) printing technology is mainly dedicated to polymers and capable of providing components or elements

Observing ground state vibrational coherence and excited state relaxation dynamics of a cyanine dye in pure solvents.

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Using a degenerate pump probe technique at 800 nm, Ground State Vibrational Coherence (GSVC) of a cyanine dye (IR780) is explored in various solvents. Five representative solvents were studied, of which GSVC is present in three: methanol (MeOH), ethanol (EtOH) and dichloromethane (DCM). The maximum

Tailing of chromatographic peaks in GC-MS caused by interaction of halogenated solvents with the ion source.

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The injection of analytes into a gas chromatography-mass spectrometry (GC-MS) system using dichloromethane (DCM) as solvent led to gradual deterioration of chromatographic signals, with significant tailing and loss of sensitivity for C17+ hydrocarbons. The injector, gas chromatograph and transfer

Efficient photochromic transformation of a new fluorenyl diarylethene: one- and two-photon absorption spectroscopy.

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Efficient reversible phototransformation of a new diarylethene-fluorene derivative, 1,2-bis(5-(9,9-didecyl-7-nitro-9H-fluoren-2-yl)-2-methylthiophen-3-yl)cyclopent-1-ene (1), was demonstrated in organic media under low-intensity laser excitation. Linear photophysical characterization of 1 was

Probing the ultrafast solution dynamics of a cyanine dye in an organic solvent interfaced with water.

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Dependence of ultrafast dynamics on the excited state evolution and ground state recovery of a cyanine dye (IR125) in dichloromethane (DCM) solvent interfaced with neat water is presented. We use degenerate pump-probe transient absorption spectroscopy to show that the excited-state dynamics of the

Density functional theory study of the platinum-catalyzed cyclopropanation reaction with olefin.

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A computational study of the platinum-catalyzed cyclopropanation reaction with olefin is presented. The model system is formed by an ethylene molecule and the active catalytic species, which forms from a CH2 fragment and the Cl2Pt(PH3)2 complex. The results show that the active catalytic species is

Simultaneous Solvent and Counterion Effects on the Absorption Properties of a Model of the Rhodopsin Chromophore.

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The ASEP/MD (averaged solvent electrostatic potential from molecular dynamics) method was employed in studying the environment effects (solvent and counterion) on the absorption spectrum of a model of the 11-cis-retinal protonated Schiff base. Experimental studies of the absorption spectra of the

Improved rapid identification of mycobacteria by combining solid-phase extraction with high-performance liquid chromatography analysis of BACTEC cultures.

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Identification of mycobacteria from BACTEC 12B cultures is achieved in 7 to 21 days by reverse-phase high-performance liquid chromatography (HPLC) using a UV spectrophotometer to detect nonpolar p-bromophenylacyl mycolic acid derivatives. However, cultures grown in BACTEC and other liquid media

Purification and comparative neurotoxicity of the trichothecenes satratoxin G and roridin L2 from Stachybotrys chartarum.

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Satratoxin G (SG), a macrocyclic trichothecene produced by Stachybotrys chartarum, induces apoptosis in cultured neuronal cells as well as nasal olfactory sensory neurons (OSN) in the nose and brain of mice exposed intranasally to this toxin. The purposes of this study were to (1) develop a facile

Lutein protects retinal pigment epithelium from cytotoxic oxidative stress.

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BACKGROUND Lutein (LUT) and zeaxanthin (ZEA) are currently under investigation in clinical trials as prophylactic nutritional agents for age-related macular degeneration (AMD). However, dose used in these trials is empirical and not been investigated in in vitro studies. OBJECTIVE In this study, we

Quantification of the putative neurotoxin 2-amino-3-(methylamino)propanoic acid (BMAA) in cycadales: analysis of the seeds of some members of the family Cycadaceae.

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Over the past 30 years there have been attempts to link the unusually high incidence of amyotrophic lateral sclerosis (ALS) among the Chamorros native to the island of Guam to the consumption of the seeds of Cycas circinalis L., the false sago palm. In support of this relationship it was recently

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