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| 1 | Bending Resistance and Anisotropy of Basalt Fibers Laminate Composite with Bionic Helical Structure显示文摘The appendages of mantis shrimp often bear bending loads from different directions during the in the process of preying on prey with its grazing limb.Hence,it has excellent bending resistance and isotropy to confront complex and changeable external load.The outstanding performance owes to the helical Bouligand structure with a certain interlayer corner,which is also widely found in other natural materials.Hence,the bio-inspired materials with basalt fiber are fabricated with outstanding bending resistance,isotropy and toughness.The research shows laminates with 18°interlayer corners exhibit relatively excellent bending resistance and isotropy,and the laminate with 11.25°interlayer corner has best toughness.Compared with traditional composites,average bending strength along different loading direction of bio-inspired materials increased by 28%,and anisotropy decreased by 86%.Besides,the maximum toughness of laminates can increase to 1.7 times of the original.Following the introduction of interlayer corners,the bio-inspired composite tends to be isotropic.To explore the reason for the change of the isotropic performance caused by diverse interlayer corners,the Finite Element Analysis based on classical laminate theory and Tsai–Wu and Tsai–Hill failure criterion.Besides,further experiments and observations are conducted to explore possible reasons.In conclusion,following the introduction of interlayer corners,the bio-inspired composites tend to be isotropic.This bio-inspired composites are expected to be applied to various complex modern engineering fields,such as vehicle,rail transit and aerospace. | Binjie Zhang Qigang Han Hanlin Qin Junqiu Zhang Shichao Niu Zhiwu Han Luquan Ren | 2022 | Journal of Bionic Engineering2022，19，3： | 0 |
| 2 | Dataset of Comparative Observations for Land Surface Processes over the Semi-Arid Alpine Grassland against Alpine Lakes in the Source Region of the Yellow River显示文摘Thousands of lakes on the Tibetan Plateau(TP) play a critical role in the regional water cycle, weather, and climate. In recent years, the areas of TP lakes underwent drastic changes and have become a research hotspot. However, the characteristics of the lake-atmosphere interaction over the high-altitude lakes are still unclear, which inhibits model development and the accurate simulation of lake climate effects. The source region of the Yellow River(SRYR) has the largest outflow lake and freshwater lake on the TP and is one of the most densely distributed lakes on the TP. Since 2011,three observation sites have been set up in the Ngoring Lake basin in the SRYR to monitor the lake-atmosphere interaction and the differences among water-heat exchanges over the land and lake surfaces. This study presents an eight-year(2012–19), half-hourly, observation-based dataset related to lake–atmosphere interactions composed of three sites. The three sites represent the lake surface, the lakeside, and the land. The observations contain the basic meteorological elements,surface radiation, eddy covariance system, soil temperature, and moisture(for land). Information related to the sites and instruments, the continuity and completeness of data, and the differences among the observational results at different sites are described in this study. These data have been used in the previous study to reveal a few energy and water exchange characteristics of TP lakes and to validate and improve the lake and land surface model. The dataset is available at National Cryosphere Desert Data Center and Science Data Bank. | Xianhong MENG Shihua LYU Zhaoguo LI Yinhuan AO Lijuan WEN Lunyu SHANG Shaoying WANG Mingshan DENG Shaobo ZHANG Lin ZHAO Hao CHEN Di MA Suosuo LI Lele SHU Yingying AN Hanlin NIU | 2023 | Advances in Atmospheric Sciences2023，40，6： | 0 |
| 3 | Effects of dietary supplementation of Bacillus subtilis DSM 32315 on growth,immune response and acute ammonia stress tolerance of Nile tilapia(Oreochromis niloticus)fed with high or low protein diets显示文摘Aquatic animals have benefited from Bacillus subtilis-based probiotics over the past few decades.This study evaluated the effects of B.subtilis DSM 32315 probiotics as a feed additive on growth,immune response and resistance to acute ammonia challenge in Nile tilapia.Specifically,four supplemental levels(0%,0.1%,0.2%,and 0.3%)of B.subtilis probiotics were tested under two dietary protein levels(32%and28%).Five replicate tanks were randomly allotted to each dietary treatment,with each tank containing 30Nile tilapia.After 8 weeks of feeding,Nile tilapia in each tank were exposed to 43.61 mg/L of total ammonia nitrogen for 48 h.The results revealed that reducing protein levels from 32%to 28%did not affect growth performance or antioxidant capacity.However,the low protein diet tended to induce an inflammatory effect shown by increased expressions of TGF-βand IFN-γgenes(P<0.05)in the liver.The impact was alleviated by the probiotic supplementation.Compared with the non-supplemented group,0.1%probiotic supplementation remarkably increased plasma lysozyme activity,total antioxidant capacity and complement C3 and interleukin-10 mRNA levels(P<0.05)in the 28%protein diet,while higher supplementation of probiotics(0.3%)was shown to be beneficial for the high protein diet(32%).In both the dietary protein levels,0.1%supplementation of probiotics promoted the antioxidant capacity of Nile tilapia before exposure to ammonia stress but higher probiotic supplementation(0.3%)proved to be necessary under ammonia stress as evidenced by higher fish survival rate.Results exhibited that supplementation with B.subtilis probiotics had a better effect on the intestinal morphology(villi height and width)regardless of protein levels.In conclusion,dietary supplementation of B.subtilis DSM 32315probiotics at 0.1%in the low protein diet and up to 0.3%in the high protein diet showed beneficial effects on the growth,immunity,and antioxidant capacity of Nile tilapia.Under ammonia stress conditions,the higher supplementation of B.subtilis DSM 32315 probiotics at 0.3%improves stress tolerance of Nile tilapia despite the two dietary protein levels(32%;28%). | Zhihong Liao Yantao Liu Hanlin Wei Xuanshu He Ziqiao Wang Zhenxiao Zhuang Wei Zhao Karthik Masagounder Juyun He Jin Niu | 2023 | Animal Nutrition2023，，4： | 0 |
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