ethylene oxide/blæðing

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Acute inhalation toxicity studies in several animal species of an ethylene oxide/propylene oxide copolymer (UCON 50-HB-5100).

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An acute inhalation toxicity study in several species of animals with an ethylene oxide/propylene oxide copolymer (EO/PO) having a molecular weight of 4000 [UCON-50-HB-5100, CAS #9038-95-3] was designed to determine if any species variation could be shown. Species tested included: rats, mice,

Pulmonary fibrosis produced in F-344 rats by subchronic inhalation of aerosols of a 4000 molecular weight ethylene oxide/propylene oxide polymer.

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Inhalation of aerosols of the ethylene oxide/propylene oxide polymer (U-5100) evaluated in this study has previously been shown in acute and 2-week studies to produce toxicologic effects on the lungs, with increased lung weights and microscopic findings of congestion and hemorrhage of pulmonary

[Polyethox corrects hemodynamic and hemorrheological disturbances after infusion-transfusion therapy of massive hemorrhage].

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Inclusion of polyethox, a medicinal form of high-molecular (4,5 x 10(6) Da) poly(ethylene oxide), into infusion-transfusion therapy of massive hemorrhage (33% of blood volume) in cats leads to an increase in the stroke and cardiac indices, restores antiturbulent and hemorrheological properties of

Two-week aerosol inhalation study in rats of ethylene oxide/propylene oxide copolymers.

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Previous studies have shown that aerosols of an ethylene oxide/propylene oxide copolymer (UCON 50-HB-5100) produced an inflammatory response in lungs of rats in short-term repeated exposures at relatively low concentrations. This study was carried out on related polyalkylene glycols (EO/PO

Role of poly(ethylene oxide) in copper-containing composite used for intrauterine contraceptive devices.

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Copper-containing composite is a cupric ions release system to prepare a novel copper intrauterine devices (Cu-IUDs), its biocompatibility and weight of the prepared composite Cu-IUDs are directly relevant to its such side-effects as pain and bleeding. To improve its biocompatibility and reduce its

Acute and 2-week inhalation toxicity studies on aerosols of selected ethylene oxide/propylene oxide polymers in rats.

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The ethylene oxide/propylene oxide (EO/PO) polymers evaluated in this study have previously been shown to have a low order of toxicity and/or irritancy by ocular, dermal, or oral routes of administration. These studies evaluated the acute inhalation toxicity of respirable aerosols of three EO/PO

Comprehensive bioanalysis of ultra-high molecular weight, highly disperse poly(ethylene oxide) in rat via micro-solid phase extraction and RPLC-Q-Q-TOF coupled with the MSALL technique.

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Ultra-high molecular weight (UHMW) poly(ethylene oxide) (PEO) is a synthetic hydrophilic polymer with wide dispersity which shows considerable promise as a hemostatic agent in the treatment of gastrointestinal bleeding. Currently there is no analytical method for the determination of highly disperse

The use of vancomycin-loaded poly-l-lactic acid and poly-ethylene oxide microspheres for bone repair: an in vivo study.

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OBJECTIVE The aim of this study was to investigate bone repair after the implantation of vancomycin-loaded poly-L-lactic acid/poly-ethylene oxide microspheres compared with vancomycin-unloaded poly-L-lactic acid/poly-ethylene oxide microspheres. METHODS Poly-L-lactic acid/poly-ethylene oxide

Resolving discrepancies among studies: the influence of dose on effect size.

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In conducting reviews or meta-analyses, epidemiologists frequently must reconcile conflicting results. This paper addresses heterogeneity in nonexperimental studies. The emphasis is on simple exploratory methods rather than formal approaches. Five examples illustrate how quantitative concordance

A clinical feasibility study to evaluate the safety and efficacy of PEOT/PBT implants for human donor site filling during mosaicplasty.

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Mosaicplasty has become a well-accepted treatment modality for articular cartilage lesions in the knee. Postoperative bleeding remains potentially concerning. This study evaluates the porous poly(ethylene oxide)terephthalate/poly(butylene terephthalate) (PEOT/PBT) implants used for donor site

NTP Toxicology and Carcinogenesis Studies of 2-Chloroethanol (Ethylene Chlorohydrin) (CAS No. 107-07-3) in F344/N Rats and Swiss CD-1 Mice (Dermal Studies).

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Toxicology and carcinogenesis studies of 2-chloroethanol (99% pure), an industrial chemical and an intermediate in the synthesis of ethylene oxide, were conducted by dermal application of 2-chloroethanol dissolved in 70% ethanol:30% water (v/v) solutions to groups of 50 F344/N rats of each sex at

NTP Toxicology and Carcinogenesis Studies of 1,2-Epoxybutane (CAS No. 106-88-7) in F344/N Rats and B6C3F1 Mice (Inhalation Studies).

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1,2-Epoxybutane was selected for study because it is a short-chain epoxide that had been shown to be mutagenic and because no carcinogenicity data were available. Approximately 8 million pounds of 1,2-epoxybutane are produced annually in the United States. The chemical is used primarily as a

[Menstrual disorders. Is this a problem to be handled by occupational medicine physician?].

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BACKGROUND The aim of the study was to define the frequency of menstrual disorders and identify risk factors, especially those associated with the work environment. METHODS The study group was composed of 142 women, aged 22-45 years. Some of them were employed in a cosmetics manufacture plant and a

Biocompatible and biodegradable polymersome encapsulated hemoglobin: a potential oxygen carrier.

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This work describes the development of polymersome-encapsulated hemoglobin (PEH) self-assembled from biodegradable and biocompatible amphiphilic diblock copolymers composed of poly(ethylene oxide) (PEO), poly(caprolactone) (PCL), and poly(lactide) (PLA). In the amphiphilic diblock, PEO functions as

Final report on the safety assessment of octoxynol-1, octoxynol-3, octoxynol-5, octoxynol-6, octoxynol-7, octoxynol-8, octoxynol-9, octoxynol-10, octoxynol-11, octoxynol-12, octoxynol-13, octoxynol-16, octoxynol-20, octoxynol-25, octoxynol-30, octoxynol-33, octoxynol-40, octoxynol-70, octoxynol-9 carboxylic acid, octoxynol-20 carboxylic acid, potassium octoxynol-12 phosphate, sodium octoxynol-2 ethane sulfonate, sodium octoxynol-2 sulfate, sodium octoxynol-6 sulfate, and sodium octoxynol-9 sulfate.

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Octoxynols are ethoxylated alkylphenols in which the size of the molecule is related to the number of moles of ethylene oxide used in synthesis. Reactions are performed at elevated temperature, under pressure, and in the presence of NaOH. It is possible that the synthesis may leave trace amounts of

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