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In recent years, a kind of mulberry pests which were known as the mulberry gall midge Cotarina sp. in different mulberry planting areas occurred popularly in China. This study aims to screening high efficacy and low toxicity insecticides for controlling Cotarina sp.. The current study can help understand integrated pest management (IPM) of Cotarina sp. by scientific and reasonable insecticide use. Field experiment was carried out to investigate eight insecticides, treated with 3 concentration gradients. The result shows that Imidacloprid, Thiamethoxam, Cyromazine, Bifenthrin and Cypermethrin·Profenofos had high control effect on the mulberry gall midge.Their pesticide residues were all less than Chinese Standard GB2763-2016, which means that they were feasible to control this pest. This paper shows that, to control Cotarina sp. in fruit mulberry production, 10% Imidacloprid WP with 2000~3000 dilution and 25% Thiamethoxam WDG with 1500~2500 dilution and 80% Cyromazine WDG with 1500~2000 dilution are the best. 2.5% Bifenthrin EW with 1000~1500 dilution and 440g/l Cypermethrin·Profenofos EC with 1000~2000 dilution should be used by selection. However, Bifenthrin or Cypermethrin·Profenofos cannot be used in mulberry field for both fruits and leaves, so as to avoid causing silkworm poisoning.

Abstract: Ti1-xAlxN (0.25≤x≤0.75) coatings were deposited by reactive DC/RF magnetron co-sputtering. The phase structure, microstructure, surface roughness and chemical composition were investigated. The anti-oxidation behavior of coatings at high temperature was also studied. It has been shown that the coatings with high Al content (x≥0.67) consisted of hexagonal-AlN and cubic-TiAlN phases, while it has cubic-TiAlN phase for the coatings with low Al content (x<0.67). The roughness of surface of coatings was 1.89∼ 4.80nm and it decreased with increasing the Al content. The thermal-stability of the Ti1-xAlxN coatings increased with increasing Al content. [Copyright &y& Elsevier]

Abstract: Effect of heat treatment and Ce additive on the plateau property of Ti32Cr46V22 BCC alloy was studied. Heat treatment is useful way to make the plateau slope comparatively flatter due to the homogenization of microstructure, and Ce additive further improves the flatness of plateau and enlarges the hydrogen capacity because of both homogenizing of composition and lowering the oxygen concentration. The heat-treated Ti32Cr46V22Ce0.4 alloy with hydrogenation capacity of 3.65wt% can release 2.00 and 2.52wt% hydrogen at 298 and 343K and the pressure of 0.1MPa, respectively. [Copyright &y& Elsevier]

Abstract: The effect of Al additive on microstructures and hydrogen storage characteristics of Ti26.5Cr20(V0.45Fe0.085)100−x Al x Ce0.5 (x =0, 0.5, 1.0 and 1.5at.%) alloys have been studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and P–C-isotherm measurements. All of Al-added alloys consist of major BCC and secondary Al–Ce–O phases. The EDS analysis results show that aluminum is poor in the BCC phase but enriches in the secondary Al–Ce–O phase. As Al additive content increased, both the lattice parameters of the BCC phase and the hydrogen desorption equilibrium pressures increase, but the hydrogen storage capacities decrease. It is revealed that the substitution solid solution with BCC structure is formed by the substitution of Al for V atoms. It decreases the hydride stability of the BCC phase and degrades the hydrogen storage performance of the Al-added Ti26.5Cr20(V0.45Fe0.085)100−x Al x Ce0.5 alloys. [Copyright &y& Elsevier]

Hexagonal boron nitride nanosheet (h-BNNS), a structural analogue of graphene, possesses remarkable properties such as exceptional electrical insulation, great resistance to corrosion, excellent mechanical strength, and thermal conductivity. Nonetheless, its continued development is still hampered by the lack of a preparation technique with an easy-to-follow procedure and reliable composition and structure control. In this study, we investigated a two-step protocol for uniform size production of thin-layered h-BNNS. By carefully manipulating the crystallization degree during synthesis of h-BN powder and employing subsequent hydrothermal treatment, we successfully obtained h-BNNS with an even thickness of only a few atomic layers. Compared with the broadly used liquid-phase exfoliation process, not only is the thickness significantly decreased but also the yield is considerably elevated to several grams. Moreover, the in-plane O doping content can be adjusted within a relatively wide range. Overall, our finding demonstrates the potential of this approach in facilitating the exploration and utilization of h-BNNS., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Published by American Chemical Society.)