objective: in order to use natural compounds in controlling plant pests and diseases, many researchers in recent years have studied the antifungal effects of essential oils and plant extracts.  the purpose of this study was to investigate the chemical composition and antifungal effects of echium khuzestanium and marubbium anisodan extracts. methods: after extraction and preparation of different...

A direct correlation between π- and spherical aromaticity of the aromatic structures was established by showing that they shared a characteristic shielding cone, resulting from a specific orientation of the applied field. Herein, we revealed the presence of a related long-range shielding cone in spherical aromatic species that was demonstrated through C20, C32, C50, and C60 Hirsh aromatic fulle...

As an important anthropogenic source of volatile organic compounds (VOCs), industrial emissions have a significant impact on air quality and human health. In this study, the characteristics, chemical reactivities, health risks VOCs around park in Zibo were analyzed at two sampling sites. The results showed that concentrations total Dongzhang Community (DZ) Special School (SS) sites 113.12 ppb 1...

A thermodynamic model is presented for the aqueous-air interface. For common organic solutes a relationship between the activity coefficients in the bulk solution and on the surface layer is deduced by using the concept of a surface monolayer. This relation has enabled development of an equation expressing the air-water surface adsorption coefficient as a function of bulk activity coefficients,...

Recently, we discovered that the delocalization of nitrogen lone-pair electrons (NLPEs) in five-membered heterocycles created a second σ-aromaticity addition to prototypical π-aromaticity. Such dual-aromatic compounds, such as pentazole anion, were proved have distinct chemistry comparison traditional π-aromatics, benzene, and surprisingly unstable, susceptible electrophilic attack, relatively ...

In the framework of reducing GHG emissions and accelerating decarbonization road transport sector, vehicle efficiency is a key factor for competitiveness. this sense, refining industry can make its contribution by reformulating high-octane petrol fuel. The impact type gasoline from CO2 emission balance, technical feasibility, economics standpoints has recently been assessed petroleum with promi...

Hydrogenation of CO2 to value-added chemicals and fuels not only effectively alleviates climate change but also reduces over-dependence on fossil fuels. Therefore, much attention has been paid the chemical conversion products, such as liquid aromatics. Recently, efficient catalysts have developed face challenge inertness difficulty C–C coupling. Considering lack a detailed summary hydrogenation...

Oxygenated volatile organic compounds (OVOCs) are important products of the photo-oxidation of hydrocarbons. They influence the oxidizing capacity and the ozoneforming potential of the atmosphere. In the summer of 2008, 2 months of emission restrictions were enforced in Beijing to improve air quality during the Olympic Games. Observational evidence reported in related studies that these control...

Fermentative bioethanol production from pyrolytic sugars was improved via aromatics removal by liquid-liquid extraction. As solvents, the ionic liquid (IL) trihexyltetradecylphosphonium dicyanamide (P666,14[N(CN)2]) and ethyl acetate (EA) were compared. Two pyrolytic sugar solutions were created from acid-leached and untreated pinewood, with levoglucosan contents (most abundant sugar) of 29.0% ...