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In this paper, the ultimate bending performance of UTG was studied. UTG samples of 30um thickness with different degrees of surface compressive stress, strengthening depth, edge collapse degree and in‐plane microdefects were selected for 2PB ultimate bending test. The results show that in‐plane microdefects have the greatest influence on UTG 2PB limit bending, the edge collapse size has the second influence on UTG 2PB limit bending, and the surface tensile stress and strengthening depth have the second influence on UTG 2PB limit bending. Therefore, the most fundamental means to improve the ultimate bending performance of UTG is to reduce the degree of microdefects in the UTG surface and effectively control the specifications of UTG edge breakage. At the same time, it is also important to characterize the degree of UTG microdefects and edge breakage.

Variegated temple bamboo (Sinobambusa tootsik f. luteoloalbostriata) is a species of ornamental bamboo (Bambusoideae) that has gained popularity because of its striped or variegated leaves. In this study, a series of experiments was conducted to determine the factors contributing to the leaf color of this species, which included the content of the photosynthetic pigments and the chlorophyll biosynthetic precursors, the photosynthetic parameters, and the microstructure and ultrastructure of the different phenotypes. Discoloration in the leaves of variegated temple bamboo plants is attributed to two possible pathways. One was a block in chlorophyll biosynthesis, which led to the failure in biosynthesis of the thylakoid membrane. The other one was a disruption in chloroplast development. The lack of thylakoid membrane may have inhibited the conversion of coproporphyrinogen III (Coprogen III) to protoporphyrin IX (Proto IX) during the chlorophyll biosynthesis because the enzyme responsible for this conversion, protogen oxidase, is bound to the thylakoid membrane. The abnormalities in chloroplasts and a low concentration of chlorophyll in the variegated leaves led to a significantly lower photosynthetic rate than in the entirely green leaves, as demonstrated in the light-response curve. [ABSTRACT FROM AUTHOR]

The thermoelectric potential mainly exists in the contact surface of different metal materials, from a few micro volts to dozens of micro volts, which is not easy to eliminate and the measurement is complex. It introduces large error to the calibration of the shunt connected electric energy meter. In this paper, the current reversing method is used to measure the positive and reverse power, and then the influence of the thermoelectric potential on the mV voltage of the shunt is eliminated by the software revision, so as to improve the precision of the detection of the shunt electric energy meter. The starting time is calculated by measuring the time of receiving a pulse in a positive and reverse direction to improve the accuracy of the starting test. At the same time, the low thermal potential is reduced by placing the shunt in the uniform temperature non conducting material. In the end, the improved electrical energy verification device is used for experimental testing to provide a higher precision technical means for tracing and detecting the source and detection of indirect access DC power meter.