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| 1 | Thermogenic responses in Eurasian Tree Sparrow(Passer montanus)to seasonal acclimatization and temperature-photoperiod acclimation显示文摘Background:Small birds in temperate habitats must either migrate,or adjust aspects of their morphology,physiology and behavior to cope with seasonal change in temperature and photoperiod.It is,however,difficult to accurately measure how seasonal changes in temperature and photoperiod affect physiological processes such as basal metabolic rate(BMR)and metabolic activity.To address this problem,we collected data in each month of the year on body mass(Mb)and BMR,and conducted a series of experiments to determine the effect of temperature and photoperiod on Mb,BMR and physiological markers of metabolic activity,in the Eurasian Tree Sparrow(Passer montanus).Methods:In one experiment,we measured monthly change in Mb and BMR in a captive group of birds over a year.In another experiment,we examined the effects of acclimating birds to two different temperatures,10 and 30℃,and a long and a short photoperiod(16 h light:8 h dark and 8 h light:16 h dark,respectively)for 4 weeks.Results:We found that these treatments induced sparrows to adjust their Mb and metabolic rate processes.Acclimation to 30℃for 4 weeks significantly decreased sparrows’Mb,BMR,and energy intake,including both gross energy intake and digestible energy intake,compared to birds acclimated to 10℃.The dry mass of the liver,kidneys and digestive tract of birds acclimated to 30℃also significantly decreased,although their heart and skeletal muscle mass did not change significantly relative to those acclimated to 10℃.Birds acclimated to 30℃also had lower mitochondrial state-4 respiration(S4R)and cytochrome c oxidase(COX)activity in their liver and skeletal muscle,compared to those acclimated to 10℃.Birds acclimated to the long photoperiod also had lower mitochondrial S4R and COX activity in their liver,compared to those acclimated to the short photoperiod.Conclusions:These results illustrate the changes in morphology,physiology,and enzyme activity induced by seasonal change in temperature and photoperiod in a small temperate passerine.Both temperature and photoperiod probably have a strong effect on seasonal variation in metabolic heat production in small birds in temperate regions.The effect of temperature is,however,stronger than that of photoperiod. | Lin Li Jingru Ge Sangyu Zheng Lihong Hong Xini Zhang Ming Li Jinsong Liu | 2020 | Avian Research2020，11，3： | 1 |
| 2 | Properties of Ti,AI N coatings synthesized by closed-field unbalanced magnetron sputtering显示文摘 | KIM Gwangseok LEE Sangyu HALN Junhee | | 0，，03： | 1 |
| 3 | New Reform of the US Peace Corps and Old Problems for Foreign Aid Volunteers显示文摘The United States once saw a 'confusing' direction of the foreign aid development under the Trump administration.It was widely speculated that the US Agency for International Development (USAID),the Millennium Challenge Corporation (MCC)and the Peace Corps were all faced multiple pressure for reform,such as budget cuts, institutional restructuring,and staff adjustment. | fan yiyi yue sangyu | 2018 | International Understanding2018，，3： | 0 |
| 4 | A modified single edge V-notched beam method for evaluating surface fracture toughness of thermal barrier coatings显示文摘The surface fracture toughness is an important mechanical parameter for studying the failure behavior of air plasma sprayed(APS)thermal barrier coatings(TBCs).As APS TBCs are typical multilayer porous ceramic materials,the direct applications of the traditional single edge notched beam(SENB)method that ignores those typical structural characters may cause errors.To measure the surface fracture toughness more accurately,the effects of multilayer and porous characters on the fracture toughness of APS TBCs should be considered.In this paper,a modified single edge V-notched beam(MSEVNB)method with typical structural characters is developed.According to the finite element analysis(FEA),the geometry factor of the multilayer structure is recalculated.Owing to the narrower V-notches,a more accurate critical fracture stress is obtained.Based on the Griffith energy balance,the reduction of the crack surface caused by micro-defects is corrected.The MSEVNB method can measure the surface fracture toughness more accurately than the SENB method. | Haoran BAI Zhanyu WANG Sangyu LUO Zhaoliang QU Daining FANG | 2023 | Applied Mathematics and Mechanics(English Edition)2023，44，5： | 0 |
| 5 | 许明买西瓜显示文摘许明最近特别想吃西瓜,放学回到家,跟妈妈说了之后,妈妈给钱让她去买个西瓜回来。她来到菜市场一看,市场上只有一个人在卖瓜,那就是大肚子。许明平时不太喜欢这个人,别看他大肚便便的样子看起来很老实,实际上这个人太狡猾了,经常贪小便宜欺骗顾客。可是今天许明实在是太想吃西瓜了,她不情愿地向那个瓜摊走去。 | Sangyu | 2016 | 数学大王(超级脑力)2016，，7： | 0 |
| 6 | 假道士的骗局显示文摘有一个乞丐长期在城市里流浪,有一天他想赚点儿钱用,于是假扮成一位道士给人算命,骗点儿钱财。这位假道士不断地吆喝道:“来人呀!看相啦!算命啦!” | Sangyu | 2016 | 数学大王(超级脑力)2016，，7： | 0 |
| 7 | Building Closer Ties for Mutual Benefit: Considerations for Chinese and Foreign Businesses in the Development of the Belt and Road显示文摘The Belt and Road In itiative,proposed by Chinese President Xi Jinping in 2013,advocates international cooperation based on mutual benefits.The Initiative has far-reaching significance for further opening the global economy and deepening economic and trade cooperation between China and countries along the route.Since its introduction more than five years ago,the BRI circle of friends has been constantly expanding to more than 100 countries,covering Asia,Africa,Europe and Latin America. | Miao Lyu Yue Sangyu | 2018 | International Understanding2018，，4： | 0 |
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