Experimental researches on the pyrolysis property of Huadian oil shale have been done by the FTIR with particle diameters of 75.66μm,110.05μm,200.21μm and 290.40μm when the heating rate is 20℃/min,which obtains its pyrolysis property curves under different particle diameter,and analyses pyrolysis property of oil shale under certain particle diameter.
The influence of sulphuric acid on bentonite is studied via the reaction of Heishan bentonite with sulphuric acid solution of different concentration. The results show that: there are 3 endothermic valley in differential thermal curve. They reflect dehydration and phase transformation of bentonite in heating.
At the third stage (Ro more than 2.0%), C1-C4 gaseous hydrocarbons are gradually rich in 13C with the increasing of the heating temperature. The relationship between δ13C of methane and Ro values of source rock is affected by the heating rate. As a result, the δ13C1 Ro relationship obtained from experiment is unsuitable for the research of high over mature source rock.
As applications, the wave equation on?+ × ?+ and the heat equation in a semi-infinite rod are considered in detail.
In a much cited article, Yau  proved that when the Ricci curvature is bounded uniformly below, then the only bounded solution to the heat equation ?tμ=Δμ on [0, ∞) × M which vanishes at t=0 is the one which vanishes evarywhere.
Well-posedness of a semilinear heat equation with weak initial data
In the first part the initial value problem (IVP) of the semilinear heat equation with initial data in is studied.
For the analogs of the heat and wave equation, we give algorithms for approximating the solution, and display the results of implementing these algorithms.
The nonlinear PDEs consist of a heat equation with the Joule heating as a source and a current conservation equation with temperature-dependent electrical conductivity.
In order to get these second-order error estimates, the Joule heating source is used in a changed equivalent form.
There were different TG curves for unprepared and calcined Magnetitum (Cishi) samples on heating.
Compound 3 exhibited the enchased texture of a smectic liquid crystal from 209.4°C to 219.5°C on heating, while 2 exhibited a liquid crystalline phase from 87.4 to 83.2°C on cooling.
In particular, the differential thermal analysis curves for the decomposition of CeO2 nanocrystalline precursor were measured at different heating rates in air by a thermal analyzer (NETZSCH STA 449C, Germany).