Abstract: A micro-molybdenum-type weathering bridge steel plate disclosed by the present invention is characterized in that the steel plate is smelted from the following components by weight: C: 0.05-0.08%, Si: 0.30-0.50%, Mn: 1.25-1.35%, P: 0.010-0.014%, S?0.003%, Nb: 0.020-0.030%, Ti: 0.010-0.020%, V: 0.040-0.050%, Cu: 0.25-0.40%, Ni: 0.25-0.35%, Cr: 0.45-0.55%, Mo: 0.03-0.08%, Alt: 0.020-0.040%, and the balance from Fe and impurities. Less content of molybdenum reduces the production cost of the steel plate, the yield strength of the steel plate is 500-600 MPa, the yield strength ratio is ?0.85, and the maximum thickness of the steel plate can reach 80 mm.

Abstract: The present disclosure describes compositions and methods for preparing aqueous nano-dispersions of hydrophobic agrochemicals and fungicides comprising cellulose nanomaterials as a carrier or dispersing agent. The compositions described herein provide superior pest and parasite control efficiency. The disclosure also provides pesticide formulations comprising cellulose nanomaterials and a dispersing agent, e.g., a surfactant, that demonstrates enhanced deposition on hydrophobic plant surfaces. The disclosure also describes the design and preparation of mucoadhesive CNC pesticide containing nano-dispersion for the control and remediation of parasitic organisms, such as sea lice in farmed aquatic species such as salmon.

Abstract: The present disclosure discloses a method for recycling iron phosphate waste and use thereof. The method includes: mixing the iron phosphate waste with an acid liquid for dissolution to obtain an iron-phosphorus solution; taking a small portion of the iron-phosphorus solution to prepare an iron phosphate precipitating agent; adding the iron phosphate precipitating agent to a remaining portion of the iron-phosphorus solution to react to obtain an iron phosphate dihydrate precipitate; and keeping a portion of the iron phosphate dihydrate precipitate as a precipitating agent for a reaction in a subsequent batch, and preparing a remaining portion of the iron phosphate dihydrate precipitate into anhydrous iron phosphate. In the present disclosure, an iron phosphate precipitating agent is prepared and used for the subsequent preparation of iron phosphate, and iron phosphate obtained in each preparation can be used for the next preparation of iron phosphate.

Abstract: Disclosed is 500-MPa low-yield-ratio weather-resistant bridge steel and a manufacturing method therefor; the weather-resistant bridge steel includes the following components in percentage by mass: C: 0.04%-0.09%, Si: 0.15%-0.30%, Mn: 1.40%-1.50%, P: 0.009%-0.015%, S: ?0.002%, Nb: 0.020%-0.050%, Ti: 0.010%-0.020%, V: 0.010%-0.030%, Cu: 0.30%-0.40%, Ni: 0.30%-0.45%, Cr: 0.45%-0.60%, Mo: 0.08%-0.15%, Alt: 0.02%-0.04%, and the balance Fe and inevitable impurities; through scientific component designing and a matched manufacturing method combining controlled rolling and cooling and tempering, the weather-resistant bridge steel has a low yield ratio, high low-temperature toughness and high elongation.