Influence of non-commercial fuel supply systems on small engine SI exhaust emissions in relation to European approval regulations.

The development and operation of road infrastructure require machines and equipment driven by low-powered internal combustion engines. In this study, we conducted emission tests on five small spark-ignition engines. We used the most popular commercial design on the market, the Lifan GX 390, with a carburettor power system, and another commercial power unit, the Honda iGX 390, with an innovative power system characterised by an electronically controlled carburettor flap.

The Impact of the Vanadium Oxide Addition on the Physicochemical Performance Stability and Intercalation of Lithium Ions of the TiO-rGO-electrode in Lithium Ion Batteries.

This work determines the effect of the addition of various amounts of vanadium oxide on the work of a cell built from a hybrid VO-TiO-rGO system in a lithium-ion cell. Moreover, a new method based on solvothermal chemistry is proposed for the creation of a new type of composite material combining reduced graphene, vanadium oxide and crystalline anatase. The satisfactory electrochemical properties of VxOy-TiO-rGO hybrids can be attributed to the perfect matching of the morphology and structure of VxOy-TiO and rGO.

Kinetics and Thermodynamics of Thermal Degradation of Different Starches and Estimation the OH Group and HO Content on the Surface by TG/DTG-DTA.

The main aim of this study is to estimate the kinetic and thermodynamic parameters of thermal decomposition of starches by the Coats-Redfern method. This procedure is a commonly used thermogravimetric analysis/difference thermal gravimetry/differental thermal analysis (TG/DTG-DTA) kinetic method for single rate form. The study also shows a proposed method for reactive hydroxyl groups content on the starch surface determination, and values were in range of 960.