On the occasion of the New Year,I would like to extend my sincere gratitude and New Year greetings to the experts,scholars,author teams,and readers who have long supported the development of Animal Models and Experime...On the occasion of the New Year,I would like to extend my sincere gratitude and New Year greetings to the experts,scholars,author teams,and readers who have long supported the development of Animal Models and Experimental Medicine(AMEM).Over the past year,we have faced challenges together and achieved breakthroughs in academic influence,internationalization,and fulfilling social respon-sibilities.Looking ahead,we are filled with confidence as we strive to build an important bridge connecting laboratory animal science and technology with academic research.展开更多
At the time marking the 40th anniversary of the normalization of Japan-China diplomatic relationship the public show of Hiroshima Kagura was successfully staged in China. As the sponsor on the Japanese side, first of ...At the time marking the 40th anniversary of the normalization of Japan-China diplomatic relationship the public show of Hiroshima Kagura was successfully staged in China. As the sponsor on the Japanese side, first of all, I would like to express展开更多
When variations occur in the water content or dry bulk density of soil,the contact angle hysteresis will affect the soil-water characteristic curve(SWCC).The occurrence of the contact angle hysteresis can be divided i...When variations occur in the water content or dry bulk density of soil,the contact angle hysteresis will affect the soil-water characteristic curve(SWCC).The occurrence of the contact angle hysteresis can be divided into slipping and pinning.It is difficult to determine the effect of pinning existence on SWCC by tests.In this study,the effect of contact angle hysteresis on SWCC was analyzed either in the case of no variations in soil dry bulk density with changes in soil water content or no variations in soil water content with changes in soil dry bulk density.In both cases,soil particles were simplified to the spherical particle model.Based on the geometrically mechanic relationship between the particles and connecting liquid bridges,a physical model for predicting the SWCC was derived from the spherical particle model.Adjusting parameters made the model applicable to various soils,that is,the cohesive soil was considered as micron-sized spherical particles.Through the simulations on SWCC test data of sand,silt,clay,and swelling soil,it was confirmed that the physical model possessed good reliability and practicability.Finally,the analysis of rationality of contact angle was performed based on the basic assumptions of the model.展开更多
Most people know BMW,the high-end car brand produced in Germany.But far fewer know of Beijing Yan Bao Auto Service Co.that has helped BMW to open up the Chinese market and win the trust of Chinese consumers.Recently,G...Most people know BMW,the high-end car brand produced in Germany.But far fewer know of Beijing Yan Bao Auto Service Co.that has helped BMW to open up the Chinese market and win the trust of Chinese consumers.Recently,General Manager of Beijing Yan Bao Auto Service Co.Mo Guocai sat with Beijing Review and told the story of BMW and Beijing Yan Bao Auto Service Co.展开更多
Established in July 1981,the Beijing People’s Association for Friendship with Foreign Countries (BPAFFC) is a civilian organization engaged in promoting people-to-people friendship between Beijing and foreign countri...Established in July 1981,the Beijing People’s Association for Friendship with Foreign Countries (BPAFFC) is a civilian organization engaged in promoting people-to-people friendship between Beijing and foreign countries. Under the leadership of the Beijing Committee of the Communist Party of China and the展开更多
Although physical exercise has been recommended as a useful means of enhancing the mental health of adolescents,the exact mechanisms through which physical exercise plays a role are unclear.Both physical exercise and ...Although physical exercise has been recommended as a useful means of enhancing the mental health of adolescents,the exact mechanisms through which physical exercise plays a role are unclear.Both physical exercise and mental health are complex concepts with multiple facets,and traditional methods may constrain the manifestations of their mapping relationships.This research aimed to find the bridging connections between physical exercise and mental health.Mental health and physical exercise behaviors were assessed using the Symptom Checklist 90(SCL-90)and the Adolescent Physical Activity Questionnaire(PAQ-A)in 9072 Chinese adolescents,respectively.Network analysis was utilized to construct the mental health-physical exercise network and to analyze the relationships between individual physical exercise behaviors and mental health symptoms.Core and bridging nodes were identified based on expected influence(EI)and bridge expected influence(BEI).Gender differences were also examined.The results revealed specific and distinct pathways between physical exercise and mental health(e.g.,winter sports-obsessive-compulsive symptoms,winter sports-phobia).For both males and females,anxiety,depression,interpersonal sensitivity,ball sports,and evening activity were the most central symptoms/behaviors,reflecting their relative significance in their respective associations.The nodes with the highest BEI were obsessive-compulsive symptoms and physical education,showing negative associations with nodes in the other community.Furthermore,in the male group,somatization and winter sports stood out as the most positive bridge nodes.Conversely,in the female group,interpersonal sensitivity and sports games were the most positive bridge nodes.These findings illuminate the pathways linking physical exercise and mental health,supporting the implementation of physical exercise in a more elaborate way.展开更多
文摘On the occasion of the New Year,I would like to extend my sincere gratitude and New Year greetings to the experts,scholars,author teams,and readers who have long supported the development of Animal Models and Experimental Medicine(AMEM).Over the past year,we have faced challenges together and achieved breakthroughs in academic influence,internationalization,and fulfilling social respon-sibilities.Looking ahead,we are filled with confidence as we strive to build an important bridge connecting laboratory animal science and technology with academic research.
文摘At the time marking the 40th anniversary of the normalization of Japan-China diplomatic relationship the public show of Hiroshima Kagura was successfully staged in China. As the sponsor on the Japanese side, first of all, I would like to express
基金Supported by the National Natural Science Foundation of China(No.50979028)the Program of the Chinese Ministry of Water Resources(No.200801065)
文摘When variations occur in the water content or dry bulk density of soil,the contact angle hysteresis will affect the soil-water characteristic curve(SWCC).The occurrence of the contact angle hysteresis can be divided into slipping and pinning.It is difficult to determine the effect of pinning existence on SWCC by tests.In this study,the effect of contact angle hysteresis on SWCC was analyzed either in the case of no variations in soil dry bulk density with changes in soil water content or no variations in soil water content with changes in soil dry bulk density.In both cases,soil particles were simplified to the spherical particle model.Based on the geometrically mechanic relationship between the particles and connecting liquid bridges,a physical model for predicting the SWCC was derived from the spherical particle model.Adjusting parameters made the model applicable to various soils,that is,the cohesive soil was considered as micron-sized spherical particles.Through the simulations on SWCC test data of sand,silt,clay,and swelling soil,it was confirmed that the physical model possessed good reliability and practicability.Finally,the analysis of rationality of contact angle was performed based on the basic assumptions of the model.
文摘Most people know BMW,the high-end car brand produced in Germany.But far fewer know of Beijing Yan Bao Auto Service Co.that has helped BMW to open up the Chinese market and win the trust of Chinese consumers.Recently,General Manager of Beijing Yan Bao Auto Service Co.Mo Guocai sat with Beijing Review and told the story of BMW and Beijing Yan Bao Auto Service Co.
文摘Established in July 1981,the Beijing People’s Association for Friendship with Foreign Countries (BPAFFC) is a civilian organization engaged in promoting people-to-people friendship between Beijing and foreign countries. Under the leadership of the Beijing Committee of the Communist Party of China and the
基金supported by the National Natural Science Foundation of China(72171193)the research project of China Youth&Children Research Association(2024B43)+2 种基金the Special funds for the Construction of World-Class Universities(disciplines)(23GH030635)the Education Reform research of Northwestern Polytechnical University(23GZ13163)and Science and Technology Innovation Team of Shaanxi Provincial(2024RS-CXTD-28).
文摘Although physical exercise has been recommended as a useful means of enhancing the mental health of adolescents,the exact mechanisms through which physical exercise plays a role are unclear.Both physical exercise and mental health are complex concepts with multiple facets,and traditional methods may constrain the manifestations of their mapping relationships.This research aimed to find the bridging connections between physical exercise and mental health.Mental health and physical exercise behaviors were assessed using the Symptom Checklist 90(SCL-90)and the Adolescent Physical Activity Questionnaire(PAQ-A)in 9072 Chinese adolescents,respectively.Network analysis was utilized to construct the mental health-physical exercise network and to analyze the relationships between individual physical exercise behaviors and mental health symptoms.Core and bridging nodes were identified based on expected influence(EI)and bridge expected influence(BEI).Gender differences were also examined.The results revealed specific and distinct pathways between physical exercise and mental health(e.g.,winter sports-obsessive-compulsive symptoms,winter sports-phobia).For both males and females,anxiety,depression,interpersonal sensitivity,ball sports,and evening activity were the most central symptoms/behaviors,reflecting their relative significance in their respective associations.The nodes with the highest BEI were obsessive-compulsive symptoms and physical education,showing negative associations with nodes in the other community.Furthermore,in the male group,somatization and winter sports stood out as the most positive bridge nodes.Conversely,in the female group,interpersonal sensitivity and sports games were the most positive bridge nodes.These findings illuminate the pathways linking physical exercise and mental health,supporting the implementation of physical exercise in a more elaborate way.
