نتایج جستجو برای: acetyl acetone
تعداد نتایج: 35557 فیلتر نتایج به سال:
Dikstein and Sulman (1) reported that the treatment of the rectus abdominis muscle of Bufo viridis toad with 3.4 M (25%) acetone for 2 minutes eliminated the response of the muscle to acetylcholine (ACh), but 5 to 20 ag/ml of phospholipids such as phospha tidylserine could restore the response of the treated muscle to ACh. They also observed similar effects of phospholipids on the rabbit uterus...
This work presents a new route to design a highly sensitive SnO2-based sensor for acetone gas enhanced by the molecular imprinting technique. Unassisted and acetone-assisted thermal synthesis methods are used to synthesis SnO2 nanomaterials. The prepared SnO2 nanomaterials have been characterized by X-ray powder diffraction, scanning electron microscopy and N2 adsorption-desorption. Four types ...
amodiaquine is an antimalarial drug used in the prophylaxis and treatment of this disease. however, hepatotoxicity as a life‑threatening adverse effect is associated with its clinical use. we evaluated amodiaquine-induced toxicity in isolated rat hepatocytes as an in vitro model for studying drug‑induced hepatotoxicity. this study attempts to investigate the protective effects of taurine and n-...
Saffron Flower Extract Promotes Scratch Wound Closure of Keratinocytes and Enhances VEGF Production.
During saffron (Crocus sativus) spice production, large amounts of floral biowaste are generated. It was the aim of this study to develop a value-added product from saffron floral biowaste to be used as a natural cosmetic ingredient. HPLC-PDA-MS analysis of saffron flower extracts revealed the presence of flavonols with the highest amounts in the acetone extract. Kaempferol-3-O-sophoroside was ...
The modulation of the properties and function of cell membranes by small volatile substances is important for many biomedical applications. Despite available experimental results, molecular mechanisms of action of inhalants and organic solvents, such as acetone, on lipid membranes remain not well understood. To gain a better understanding of how acetone interacts with membranes, we have perform...
A synthetic acetone operon (ace4) composed of four Clostridium acetobutylicum ATCC 824 genes (adc, ctfAB, and thl, coding for the acetoacetate decarboxylase, coenzyme A transferase, and thiolase, respectively) under the control of the thl promoter was constructed and was introduced into Escherichia coli on vector pACT. Acetone production demonstrated that ace4 is expressed in E. coli and result...
Background & Aims: Oxidative stress has a prominent role on function of injured peripheral nervous system. In this study, we aimed to investigate the effects of n-acetyl cysteine on functional, biochemical factors and ultrastructural changes induced by experimental crush on sciatic nerve in the rat. Materials & Methods: Sixty rats were divided into 5 groups, which contained 12 animals each. ...
Treatment of rabbits with 1% (v/v) acetone for 1 week resulted in the appearance in blood serum of 88 +/- 14 14 nmol/ml 1-hydroxyacetone (acetol) and 70 +/- 9 nmol/ml 1,2-propanediol. Untreated rabbits had no detectable 1,2-propanediol or acetol. Hepatic microsomes from control, ethanol-, and acetone-treated rabbits catalyzed the hydroxylation of acetone at rates of 0.32 +/- 0.01, 2.01 +/- 0.43...
We apply a full year of continuous atmospheric acetone measurements from the University of Minnesota tall tower Trace Gas Observatory (KCMP tall tower; 244 m a.g.l.), with a 0.5× 0.667 GEOS-Chem nested grid simulation to develop quantitative new constraints on seasonal acetone sources over North America. Biogenic acetone emissions in the model are computed based on the MEGANv2.1 inventory. An i...
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