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Urea

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Synthesis and Evaluation of Biological Activities of Aziridine Derivatives of Urea and Thiourea.

Molecules (Basel, Switzerland)
In the present paper, we report the synthesis and evaluation of in vitro antimicrobial activities of aziridine-thiourea derivatives. A series of aziridines in reaction with isocyanates and isothiocyanates to obtain urea and thiourea derivatives were ...

Determination of urea in milk based on N-bromosuccinimide-dichlorofluorescein postchemiluminescence method.

Journal of food and drug analysis
A new postchemiluminescence (PCL) reaction was observed when urea was injected into the reaction mixture after the CL reaction of N-bromosuccinimide and dichlorofluorescein. A possible reaction mechanism was proposed based on the studies of the CL ki...

Renoprotective Effects of Shout Camphor Medicinal Mushroom (Taiwanofungus camphorates, Basidiomycetes) Mycelia on Several Media in Mice with Chronic Kidney Disease.

International journal of medicinal mushrooms
Taiwanofungus camphoratus has been widely used in Taiwan as a folk medicine to prevent and treat liver diseases, diarrhea, abdominal pain, itchy skin, and hypertension. Recent studies have shown that T. camphoratus mycelia extracts exert anti-inflamm...

HPLC-UV method for simultaneous determination of MK-1775 and AZD-7762 in both acetonitrile-aqueous solution and mouse plasma.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
A sensitive and precise method is described for the simultaneous determination of two small molecule kinase inhibitors: MK-1775 (MK) and AZD-7762 (AZD), in acetonitrile (ACN)-aqueous solution and in mouse plasma. A Nova-Pak C18 reversed phase column ...

Layer-by-layer assembly of gold nanoparticles and cysteamine on gold electrode for immunosensing of human chorionic gonadotropin at picogram levels.

Materials science & engineering. C, Materials for biological applications
The development of an electrochemical immunosensor for the detection of human chorionic gonadotropin (hCG) is described with a limit of detection as low as 0.3 pg mL(-1) in phosphate buffer. In this immunosensor, cysteamine (Cys) and gold nanoparticl...

A fuzzy logic urea dosage controller design for two-cell selective catalytic reduction systems.

ISA transactions
Diesel engines have dominated in the heavy-duty vehicular and marine power source. However, the induced air pollution is a big problem. As people's awareness of environmental protection increasing, the emission regulations of diesel-engine are becomi...

Prediction of soil urea conversion and quantification of the importance degrees of influencing factors through a new combinatorial model based on cluster method and artificial neural network.

Chemosphere
Quantitative prediction of soil urea conversion is crucial in determining the mechanism of nitrogen transformation and understanding the dynamics of soil nutrients. This study aimed to establish a combinatorial prediction model (MCA-F-ANN) for soil u...