Abstract: A method for preparing a Zn—Mg—Ca—Sr alloy, in which an as-cast Zn—Mg—Ca—Sr alloy is subjected to homogenization, and a boron nitride lubricant is sprayed on a surface of the as-cast Zn—Mg—Ca—Sr alloy and an inner cavity surface of a die. The as-cast Zn—Mg—Ca—Sr alloy is put into the die, and subjected to heating and 8-pass reciprocating extrusion to obtain the desired Zn—Mg—Ca—Sr alloy with high strength and high toughness, where the extrusion speed is stagewise controlled to realize stagewise variable-extrusion speed reciprocating extrusion. This application also provides a biodegradable medical implant material including a Zn—Mg—Ca—Sr alloy prepared by such method.

Abstract: An iron-carbon composite material, a preparation method therefor, and an application thereof related to microbial technology applications. The method includes the following steps: a cross-linking and curing step: carrying out cross-linking and curing to iron powder and biological activated carbon by using an alkaline earth metal salt and a cross-linking agent; and a mineralization treatment step: soaking the cross-linked and cured iron-carbon composite material in a mineralization bacteria solution for 5-15 min, and carrying out drying to obtain an iron-carbon composite material.

Abstract: A method for preventing and treating pollution plume migration of a permeable reactive barrier including: mounting monitoring assemblies, so as to monitor operation parameters of an active filler in a reactive barrier and a downstream water body of the reactive barrier in real time; determining whether the active filler in the reactive barrier is passivated according to a change state of the operation parameters, and if passivation occurs, performing a depassivation treatment on the reactive barrier; determining whether a gas blockage occurs in the active filler in the reactive barrier according to the change state of the operation parameters, and if a gas blockage occurs, performing a gas guiding treatment on the reactive barrier; and determining whether a microorganism content in the reactive barrier is greater than a preset microorganism value according to the change state of the operation parameters.

Abstract: The present invention relates to specific CLDN18.2 binding molecules, and an immunoconjugate and a composition containing the CLDN18.2 binding molecules. The present invention further relates to a nucleic acid encoding the CLDN18.2 binding molecules, a host cell containing same, and a method for preparing the CLDN18.2 binding molecules. Furthermore, the present invention relates to the therapeutic and diagnostic use of the CLDN18.2 binding molecules. In particular, the present invention relates to the combined treatment of the CLDN18.2 binding molecules with other therapies, such as a therapeutic method or a therapeutic agent.