Abstract: A method for preparing pentachloropyridine by utilizing DCTF rectifying short steaming residues, comprising the following steps: converting polymers in the residues through in situ catalytic cracking and vacuum distillation by using the catalytic degradation function of a catalyst formed by aluminum oxide, silicon oxide, zirconia, 4A zeolite, magnesium oxide, mordenite and HZSM-5 zeolite on the polymers in the DCTF rectifying short steaming residues into small molecular compounds and obtaining pentachloropyridine-containing crude oil; washing the pentachloropyridine-containing crude oil by using an aqueous solution of an alkaline assistant formed by sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and sodium hydroxide, carrying out reduced pressure rectification, refrigerating crystallization, vacuum filtration or centrifuging separation, solvent washing, and vacuum drying method sequentially to obtain a pentachloropyridine product with a mass percentage c

Abstract: A method for preparing pentachloropyridine by utilizing DCTF rectifying short steaming residues, comprising the following steps: converting polymers in the residues through in situ catalytic cracking and vacuum distillation by using the catalytic degradation function of a catalyst formed by aluminum oxide, silicon oxide, zirconia, 4A zeolite, magnesium oxide, mordenite and HZSM-5 zeolite on the polymers in the DCTF rectifying short steaming residues into small molecular compounds and obtaining pentachloropyridine-containing crude oil; washing the pentachloropyridine-containing crude oil by using an aqueous solution of an alkaline assistant formed by sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate and sodium hydroxide, carrying out reduced pressure rectification, refrigerating crystallization, vacuum filtration or centrifuging separation, solvent washing, and vacuum drying method sequentially to obtain a pentachloropyridine product with a mass percentage c

Abstract: The present invention is related to methods in which an electric field pulse is applied to cells and tissue. Several embodiments of the present invention relate to the application of electric field pulses to cells to regulate the physiology and biophysical properties of various cell types, including terminally differentiated and rapidly dividing cells. Methods of regulating transcription of a gene in a cell, marking a cell for diagnostic or therapeutic procedures, determining cellular tolerance to electroperturbation, selectively electroperturbing a population of cells, reducing proliferation of rapidly dividing cells in a patient, and facilitating entry of a diagnostic or therapeutic agent into a cell's intracellular structures are also provided.

Abstract: The present invention is related to methods in which an electric field pulse is applied to cells and tissue. Several embodiments of the present invention relate to the application of electric field pulses to cells to regulate the physiology and biophysical properties of various cell types, including terminally differentiated and rapidly dividing cells. Methods of regulating transcription of a gene in a cell, marking a cell for diagnostic or therapeutic procedures, determining cellular tolerance to electroperturbation, selectively electroperturbing a population of cells, reducing proliferation of rapidly dividing cells in a patient, and facilitating entry of a diagnostic or therapeutic agent into a cell's intracellular structures are also provided.