Construction of chub mackerel (Scomber japonicus) fishing ground prediction model in the northwestern Pacific Ocean based on deep learning and marine environmental variables.

Accurate prediction of the central fishing grounds of chub mackerel is substantial for assessing and managing marine fishery resources. Based on the high-seas chub mackerel fishery statistics and multi-factor ocean remote-sensing environmental data in the Northwest Pacific Ocean from 2014 to 2021, this article applied the gravity center of the fishing grounds, 2DCNN, and 3DCNN models to analyze the spatial and temporal variability of the chub mackerel catches and fishing grounds. Results:1) the primary fishing season of chub mackerel fishery was April-November which catches were mainly concentrated in 39°∼43°N, 149°∼154°E.

Growing pigs developed different types of diabetes induced by streptozotocin depending on their transcription factor 7-like 2 gene polymorphisms.

The different polymorphisms of the transcription factor 7-like 2 (TCF7L2) gene promote variances in diabetes susceptibility in humans. We investigated whether these genotypes also promote differences in diabetic susceptibility in commercial pigs. Growing pigs (Landrace, both sex, 50-60 kg) with the C/C (n=4) and T/T (n=5) TCF7L2 genotypes were identified and intravenously injected with streptozotocin (STZ, 40 mg/kg) twice in weekly intervals, then a high-energy diet was offered.

Effect of pre-treatment of bentonite with sodium and calcium ions on phosphate adsorption onto zirconium-modified bentonite.

To understand the influence of the pre-treatment of bentonite with Na and Ca on the adsorption of phosphate on zirconium-modified bentonite, three kinds of adsorbent materials including zirconium-modified raw, Na-pretreated and Ca-pretreated bentonites were synthesized and characterized firstly, and afterward their adsorption performance and mechanism for phosphate were studied comparatively. The phosphate adsorption ability for zirconium-modified bentonite decreased after the pre-treatment of bentonite with Na, but it increased after the pre-treatment of bentonite with Ca. The maximum phosphate adsorption capacity calculated from the Langmuir isotherm model for zirconium-modified Ca-pretreated bentonites (13.

[Adsorption of Phosphate from Aqueous Solution on Hydrous Zirconium Oxides Precipitated at Different pH Values].

In this study, hydrous zirconium oxide (HZO) samples precipitated at different pH values were prepared, characterized and used as adsorbents to remove phosphate from aqueous solution. The adsorption characteristics and mechanisms of phosphate on these HZO samples were investigated. The results showed that the presence of Na slightly enhanced the adsorption of phosphate on HZO samples prepared at precipitation pH of 4.