Phenomenological Modeling of Formic Acid Fractionation of Sugarcane Bagasse by Integration of Operation Parameters as an Extended Combined Severity Factor.

In order to more conveniently simulate and optimize the solubilization of sugarcane bagasse components during formic acid (FA) fractionation, an extended combined severity factor () was defined to integrate various operation parameters as a single factor. Two phenomenological models based on Arrhenius and Logistic equations were further used to describe the phenomenological kinetics. Different data-processing methods were compared to fit the severity parameters and model constants.

Preparation of formyl cellulose and its enhancement effect on the mechanical and barrier properties of polylactic acid films.

Cellulose was modified by formic acid to prepare formyl cellulose (FC). The amount of formyl groups in FC was adjusted by controlling the reaction time, reaction temperature, and formic acid concentration. Then, FC was used to reinforce polylactic acid (PLA) films prepared by solution casting.

[Effects of Oridonin on Proliferation Apoptosis of Human Multiple Myeloma Cells H929 in Vitro].

Objective: To investigate the effects of oridonin (ORI) on the proliferation and apoptosis of human multiple myeloma cell line H929 and its possible mechanism.

Methods: H929 cells were exposed to ORI 0、4、8、12、16、20、24、28、32 μmol/L for 12, 24 and 36 hours respectively. The prolifcration inhibitory effect of ORI on H929 cells was determined by MTT assay and then the working concentrations of ORI were determined.