Abstract: Provided are a modified graphite and a preparation method thereof, a carbon-coated negative active material and a preparation method thereof, a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The preparation method of a modified graphite includes the following steps: (S10) providing a graphite substrate; and (S20) heat-treating the graphite substrate in a micro-oxidizing atmosphere to obtain the modified graphite, where the micro-oxidizing atmosphere includes a reactive gas, and the reactive gas is one or more selected from CO2, O2, and O3. The preparation method of a carbon-coated negative active material includes the following steps: (S100) providing a negative active material substrate; and (S200) heat-treating the negative active material substrate and a carbonaceous precursor in a micro-oxidizing atmosphere to obtain the carbon-coated negative active material, where the micro-oxidizing atmosphere includes a reactive gas.

Abstract: A system, method and software arrangement according to exemplary embodiments of the present invention are provided which can use molecular profiles obtained from unaltered human tissue specimens for clinical purposes including disease diagnoses and treatment evaluations. For example, spatial distributions of chemical species including metabolites within the tissue may be obtained using radiological techniques such as magnetic resonance spectroscopy imaging. Disease-specific profiles may be obtained by comparing the distributions of chemical species obtained in ex vivo tissues with pathological observations made on them using statistical analysis. The disease-specific profiles may then be correlated with in vivo or ex vivo molecular profiles to obtain spatial maps that can provide a more sensitive and accurate detection of diseased tissue.