Bone tissue engineering may be hindered by underlying osteoporosis because of a decreased osteogenic ability of autologous seed cells and an unfavorably changed microenvironment in these patients. Epigenetic regulatio...Bone tissue engineering may be hindered by underlying osteoporosis because of a decreased osteogenic ability of autologous seed cells and an unfavorably changed microenvironment in these patients. Epigenetic regulation plays an important role in the developmental origins of osteoporosis; however, few studies have investigated the potential of epigenetic therapy to improve or rescue the osteogenic ability of bone marrow mesenchymal stem cells(BMMSCs) under osteoporotic conditions. Here, we investigated pargyline, an inhibitor of lysine-specific demethylase 1(LSD1), which mainly catalyzes the demethylation of the di- and mono-methylation of H3K4. We demonstrated that 1.5 mmol·Lpargyline was the optimal concentration for the osteogenic differentiation of human BMMSCs. Pargyline rescued the osteogenic differentiation ability of mouse BMMSCs under osteoporotic conditions by enhancing the dimethylation level of H3K4 at the promoter regions of osteogenesis-related genes. Moreover, pargyline partially rescued or prevented the osteoporotic conditions in aged or ovariectomized mouse models, respectively. By introducing the concept of epigenetic therapy into the field of osteoporosis, this study demonstrated that LSD1 inhibitors could improve the clinical practice of MSC-based bone tissue engineering and proposes their novel use to treat osteoporosis.展开更多
The analysis of cetacean strandings can provide fundamental information about species diversity and composition in a particular region. The present study collected and analyzed cetacean strandings, bycatches and rescu...The analysis of cetacean strandings can provide fundamental information about species diversity and composition in a particular region. The present study collected and analyzed cetacean strandings, bycatches and rescues along the western coast of the Taiwan Strait, China, from 2010 to 2015. In total, 48 records, including 37 strandings, 8 bycatches and 3 rescues, involving 13 known species were collected. Among them, Indo-Pacific humpback dolphins（Sousa chinensis） and finless porpoises（Neophocaena phocaenoides） were the most common species, consisting of 31.3% and 25%, respectively. Notably, 10 out of the 48（20.8%） records were collected from the Pingtan Island and included 3 species of Mysticeti and 4 species of Odontoceti. Finally, we compared the cetacean species composition between the western and eastern coasts of the Taiwan Strait; 31 cetacean species occurred in the Taiwan Strait, indicating a relatively high cetacean diversity in this region. Systematic field surveys are urgently needed to explore the cetacean species composition, population stock and the related habitat status in the Taiwan Strait, which may improve conservation management in the future.展开更多
Emerging evidence indicates that reprogramming of energy metabolism involving disturbances in energy production from a defect in cellular respiration with a shift to glvcolvsis is a core hallmark of cancer[1].
This paper addresses the problem of multi-objective coalition formation for task allocation. In disaster rescue, due to the dynamics of environments, heterogeneity and complexity of tasks as well as limited available ...This paper addresses the problem of multi-objective coalition formation for task allocation. In disaster rescue, due to the dynamics of environments, heterogeneity and complexity of tasks as well as limited available agents, it is hard for the single-objective and single （task）-to-single （agent） task allocation approaches to handle task allocation in such circumstances. To this end, two multi-objective coalition formation for task allocation models are proposed for disaster rescues in this paper. First, through coalition formation, the proposed models enable agents to cooperatively perform complex tasks that cannot be completed by single agent. In addition, through adjusting the weights of multiple task allocation objectives, the proposed models can employ the linear programming to generate more adaptive task allocation plans, which can satisfy different task allocation requirements in disaster rescue. Finally, through employing the multi-stage task allocation mechanism of the dynamic programming, the proposed models can handle the dynamics of tasks and agents in disaster environments. Experimental results indicate that the proposed models have good performance on coalition formation for task allocation in disaster environments, which can generate suitable task allocation plans according to various objectives of task allocation.展开更多
高速游艇在海上发生了故障,Lenny Leon Peter便在海上漂泊了 26日,终于被英国 HMS Grafton号护卫舰发现,而九死一生。文章中两次出现了spot一词,而不是用see,discover等动词,值得体味。因为spot的确切含义是:todetect or discern,especi...高速游艇在海上发生了故障,Lenny Leon Peter便在海上漂泊了 26日,终于被英国 HMS Grafton号护卫舰发现,而九死一生。文章中两次出现了spot一词,而不是用see,discover等动词,值得体味。因为spot的确切含义是:todetect or discern,especially visually/辨认或认出,特别指用眼睛看出。有趣的是,文中出现了lookout一词,其确切含义,你可要当心哟。展开更多
The endosymbiont Wolbachia manipulates host reproduction by several strategies, one of the most important of which is cytoplasmic incompatibility (CI). CI can be rescued when Wolbachia-infected males mate with females...The endosymbiont Wolbachia manipulates host reproduction by several strategies, one of the most important of which is cytoplasmic incompatibility (CI). CI can be rescued when Wolbachia-infected males mate with females infected with the same Wolbachia strain. However, the potential rescue mechanism of CI in the small brown planthopper Laodelphax striatellus is unclear. In this study, comparative transcriptome analysis was applied to explore the effect of Wolbachia on L. striatellus eggs. A total of 1387 differentially expressed genes were identified. RNA interference of 7 Wolbachia-upregulated key planthopper genes reduced egg reproduction, suggesting that Wolbachia might improve fecundity in L. striatellus by affecting these 7 genes. Suppressing the expression of another upregulated gene, NDUFA8 (encoding NADH dehydrogenase [ubiquinone] 1 α subcomplex subunit 8-like) by RNA interference significantly increased the mortality of early embryos without affecting the number of deposited eggs. Wolbachia infection upregulated the mRNA level of NDUFA8, and dsNDUFA8 treatment of Wolbachia-infected females recreated CI-like symptoms, suggesting that NDUFA8 is associated with the rescue phenotype. Because all L. striatellus populations worldwide are infected with Wolbachia, NDUFA8 is a potential pest control target.展开更多
The existing research on rescue robots has focused mainly on reconnaissance,detection,and firefighting,and a small number of robots that can achieve human rescue have problems such as poor safety and stability and ins...The existing research on rescue robots has focused mainly on reconnaissance,detection,and firefighting,and a small number of robots that can achieve human rescue have problems such as poor safety and stability and insufficient carrying capacity.This article addresses the above issues and cleverly combines the advantages of soft robotic arms,underactuated robotic arms,and suction cups based on the principles of bionics.A new design for a robotic arm was proposed,and its working principle was explained.Then,the human rescue process was divided into two stages,and the grasping force of the robotic arm in each stage was analyzed separately.Finally,a prototype of the principle was developed,and the feasibility of the design principle of the robotic arm was verified through grasping experiments on a cross-sectional contour model of the human chest.At the same time,grasping experiments were conducted on different objects to demonstrate the potential application of the robotic arm in grasping ground objects.This research proposes a stress envelope adsorption rescue robot arm inspired by the adhesion ability of the Drosera plant and the stress envelope effect,which can apply force to the entire surface of the human body,reduce local force on the human body,ensure load-bearing capacity and adaptability,and improve the safety and stability of rescue grasping.展开更多
More than eighty years ago,when the Nazis brutally persecuted and mass-murdered the Jews,and nearly every country in the world shut its door to them desperately seeking refuge,the Chinese people,especially those of th...More than eighty years ago,when the Nazis brutally persecuted and mass-murdered the Jews,and nearly every country in the world shut its door to them desperately seeking refuge,the Chinese people,especially those of the city of Shanghai,opened their arms to the European Jews at this critical moment.展开更多
1 On December 26,2024,a remarkable act of heroism took place at Poospatuck Creek.Kayla Masotto,a 28⁃year⁃old resident of Mastic,Long Island,stepped into the role of a life⁃saver when she witnessed a man fall through t...1 On December 26,2024,a remarkable act of heroism took place at Poospatuck Creek.Kayla Masotto,a 28⁃year⁃old resident of Mastic,Long Island,stepped into the role of a life⁃saver when she witnessed a man fall through the ice on the lake.2 At about 6 pm,Kayla was washing vegetables in the kitchen when her attention was suddenly caught by a boy skating alone on the lake.In a split second,she witnessed the ice beneath him break,and the boy fell into the water.Without any hesitation,Kayla immediately grabbed her paddleboard(桨叶式冲浪板)and ran across her backyard,reaching the edge of the lake in seconds.展开更多
Charlie,a father from Sunderland,was enjoying a meal with friends when sudden panic erupted at a nearby table.A woman began to choke,her face turning red as her breaths became shallow.Her friend wildly pounded her bac...Charlie,a father from Sunderland,was enjoying a meal with friends when sudden panic erupted at a nearby table.A woman began to choke,her face turning red as her breaths became shallow.Her friend wildly pounded her back,and others yelled for help.Without hesitation,Charlie sprang into action.展开更多
主题语境:动物保护篇幅:316词建议用时:6分钟。1 A kayaking(皮划艇)guide turned into a real-life hero by saving a baby seal's life.He cut a dangerous fishing line off the seal's neck,an act that truly made a diffe...主题语境:动物保护篇幅:316词建议用时:6分钟。1 A kayaking(皮划艇)guide turned into a real-life hero by saving a baby seal's life.He cut a dangerous fishing line off the seal's neck,an act that truly made a difference.2 Earlier this month,a remarkable video was filmed at Walvis Bay,Namibia.In it,SJ Louw could be seen springing into action to give the seal pup a new opportunity for life.展开更多
Researchers have discovered that mice instinctively exhibit rescue-like behavior towards anesthetized companions-a finding that suggests a biological basis for prosociality.The study,published in PNAS on April 23,2025...Researchers have discovered that mice instinctively exhibit rescue-like behavior towards anesthetized companions-a finding that suggests a biological basis for prosociality.The study,published in PNAS on April 23,2025,was led by Dr.HU Li from the Institute of Psychology of the Chinese Academy of Sciences(IPCAS)and Dr.CHEN Zhoufeng from Washington University School of Medicine and the Shenzhen Medical Academy of Research and Translation.展开更多
A devastating disease called Huanglongbing(HLB) or citrus green is wiping out citrus trees across the globe. But we are seeing new hope. Scientists have recently uncovered a hidden battle happening inside citrus plant...A devastating disease called Huanglongbing(HLB) or citrus green is wiping out citrus trees across the globe. But we are seeing new hope. Scientists have recently uncovered a hidden battle happening inside citrus plants. Understanding this microscopic tug-of-war could be the key to rescuing our beloved oranges, lemons, and grapefruits.展开更多
Climate change exacerbates tourism emergencies, making it increasingly critical to enhance mitigation and adaptation capacity to alleviate extreme climate's impacts during tourism. Climate-induced impacts and thre...Climate change exacerbates tourism emergencies, making it increasingly critical to enhance mitigation and adaptation capacity to alleviate extreme climate's impacts during tourism. Climate-induced impacts and threats in mountainous tourism areas are more challenging given complex terrains and multiple risk sources. Prior studies have focused on assessing climate-related impacts in mountainous tourism areas, while limited studies have investigated the emergency rescue capacity of mountainous tourism areas. This largely constrains decision makers to adopt proper solutions to enhance emergency rescue capacity. To address this research challenges, this study aims to assess emergency rescue capability through an empirical study of the Wulong Karst Tourism Destination(WKTD) area in Chongqing, China. In particular, based on road network and emergency response facility data, the accessibility of road network was delineated by the Spatial Design Network Analysis(s DNA) model. The results indicate that fire and medical rescue facilities were extremely limited and their service coverage was irregular. Valleys significantly narrowed rescue facilities' service area and weakened their functional connection. With the vital 60-minute timeframe, the closeness and betweenness analyses revealed the low accessibility of global rescue roads, while relatively high accessibility of small-scale vehicle and pedestrian rescue roads. The Mean Crow Flight(MCF) and Diversion Ratio(DR) analyses verified that the accessibility of road rescue services was impeded by mountainous terrain. Overall, this study informs solutions pertaining to rescue and disaster mitigation in mountainous tourism areas.展开更多
1 The grandfather was choking on a mouthful of food,unable to breathe and unable to cough.The grandson,recalling the important lesson learned during the 8-13 Project organized by the Italian Red Cross⁃Poggi⁃Sermide Co...1 The grandfather was choking on a mouthful of food,unable to breathe and unable to cough.The grandson,recalling the important lesson learned during the 8-13 Project organized by the Italian Red Cross⁃Poggi⁃Sermide Committee,suggested performing the Heimlich manoeuvre(海姆立克急救法)on the elderly man.展开更多
City of Muskogee Animal Control Supervisor Phil Blair is known for his devotion to animals,but his quick thinking this week took that commitment to a whole new level-saving the life of an unborn baby deer after a trag...City of Muskogee Animal Control Supervisor Phil Blair is known for his devotion to animals,but his quick thinking this week took that commitment to a whole new level-saving the life of an unborn baby deer after a tragic accident.Blair was called to the scene of a deer struck by a car.Upon arrival,he found the mother deer had suffered four broken legs and sadly had to be put down to prevent further suffering.展开更多
Objective:To explore the application effect of emergency rescue capability intervention among students in a university in Beijing.Methods:A total of 900 students from a university in Beijing in 2023 were selected as t...Objective:To explore the application effect of emergency rescue capability intervention among students in a university in Beijing.Methods:A total of 900 students from a university in Beijing in 2023 were selected as the research objects.Emergency rescue capability training was conducted from March 2023 to June 2023,once a month.The students’mastery of emergency rescue before and after the intervention was analyzed.Survey questionnaires were distributed to all college students to understand their channels and willingness to acquire emergency rescue knowledge.Results:A total of 886 valid questionnaires were collected in this study.The highest proportion of knowledge about China’s general emergency telephone number and how to dial the emergency rescue hotline was 100.00%.Among the strategies for dealing with cardiac arrest in CPR,the highest proportion was 336.34%.Among the four major first aid techniques of hemostasis,bandaging,fixation,transportation,the highest proportion of knowledge about the use of rubber band signs was 31.71%.Among the first aid techniques for heatstroke,poisoning,fire,and sharp instrument injuries,the principle of emergency treatment for severe gas poisoning had the highest proportion of 41.42%,showing significant differences.College students mainly acquire knowledge of emergency rescue capability through TV programs,health education lectures,and the internet.Around 61.40%of college students hope to learn more about prevention and control knowledge.Conclusion:After the intervention of emergency rescue capability,the emergency rescue capability of college students in this university has been significantly improved,showing a strong training effect,which is worthy of promotion.展开更多
High-altitude rescue is dangerous and difficult.A new rescue method is proposed here based on electromagnetically launched tethered nets.Four electromagnetic launching units are attached to a revolving platform,from w...High-altitude rescue is dangerous and difficult.A new rescue method is proposed here based on electromagnetically launched tethered nets.Four electromagnetic launching units are attached to a revolving platform,from which four projectiles are launched.The four projectiles are connected to a tethered net,bringing it into motion.As the tethered net approaches and comes into contact with the object,the object will be trapped,and the rescue task will then be completed as long as the tethered net can be restored along with the trapped object.The structural design of the electromagnetic launching unit is presented with the established mathematical model.The motion characteristics of the launched projectiles are studied and their exit velocities are modeled and measured.Terminal velocities of these projectiles are characterized,and the final shape and position of the projected tethered net are obtained.This study validates the feasibility of using electromagnetically launched tethered nets to perform high-altitude rescues.展开更多
Unlike other major crops,little research has been performed on tomato to reduce the generation time for speed breeding.We evaluated several agronomic treatments to reduce the generation time of tomato in the‘M82'...Unlike other major crops,little research has been performed on tomato to reduce the generation time for speed breeding.We evaluated several agronomic treatments to reduce the generation time of tomato in the‘M82'(determinate)and‘Moneymaker'(indeterminate)varieties and evaluated the best combination in conjunction with embryo rescue.Five container sizes with volumes of 0.2 L(XS),0.45 L(S),0.8 L(M),1.3 L(L),and6 L(XL),were evaluated in the first experiment under the autumn cycle.We found that plants grown in XL containers exhibited better development and required less time from sowing to anthesis(DSA)and from anthesis to fruit ripening(DAR).In the second experiment,using XL containers in the autumn-winter cycle,we evaluated the effects of cold priming at the cotyledonary stage,water stress,P supplementation,and K supplementation on generation time.Compared to the control,we found that cold priming significantly reduced the number of leaves,plant height to first the inflorescence,and DSA(2.7 d),whereas K supplementation reduced the DAR(8.8 d).In contrast,water stress and P supplementation did not significantly affect any of the measured traits like DAR,DSA or fruit set.To validate these data,in a third experiment with XL containers in the spring-summer cycle,the combination of cold priming and K supplementation was tested,confirming the significant effect of this combination on the reduction of generation time(2.9 d for DSA and 3.9 d for DAR)compared to the control.Embryo rescue during the cell expansion cycle(average of 22.0 d and 23.3 d after anthesis for‘M82'and‘Moneymaker',respectively)allowed the shortening of the generation time by 8.7 d in‘M82'and 11.6 d in‘Moneymaker'compared to the in planta fruit ripening.The combination of agronomic treatments with embryo rescue can effectively increase the number of generations per year from three to four for speed breeding of tomato.展开更多
The ability of cyborg locusts to achieve directional movement in complex outdoor environments is critical for search and rescue missions.Currently,there is a lack of research on motion control for cyborg locusts in ou...The ability of cyborg locusts to achieve directional movement in complex outdoor environments is critical for search and rescue missions.Currently,there is a lack of research on motion control for cyborg locusts in outdoor settings.In this study,we developed cyborg locusts capable of performing directional locomotion in intricate outdoor environments,including jumping over obstacles,climbing slopes,traversing narrow pipelines,and accurately reaching predetermined targets along specified routes.We designed a miniature electrical backpack(10 mm×10 mm,0.75 g)capable of receiving stimulus parameters(frequency,duty ratio,and stimulation time)via Bluetooth commands from mobile phones.Electrical stimulation of locust sensory organs,such as the antennae and cercus,induced turning and jumping behaviors.Experi-mental testing of locust movement control was conducted under outdoor conditions with a short electrical stimulation interval.Results showed a positive correlation between locust turning angles and electrical stimulation parameters within a specified range,with an average jumping height exceeding 10 cm.Additionally,the success rate of locust turning and jumping behaviors correlated positively with the interval time between electrical stimulations.Adjusting these intervals during forward crawling phases increased the likelihood of the locusts jumping again.In conclusion,this study success-fully achieved directional locomotion control of cyborg locusts outdoors,providing insights and references for advancing search and rescue capabilities.展开更多
基金supported by grants from the National Natural Science Foundation of China(81200763 to WG and 81070809 to YZ)the Program for New Century Excellent Talents(NCET)at the University from Ministry of Education of China(NCET-11-0026)+1 种基金the PKU School of Stomatology for Talented Young Investigators(PKUSS20150107)the Construction Program for the National Key Clinical Specialty from the National Health and Family Planning Commission of China(2011)
文摘Bone tissue engineering may be hindered by underlying osteoporosis because of a decreased osteogenic ability of autologous seed cells and an unfavorably changed microenvironment in these patients. Epigenetic regulation plays an important role in the developmental origins of osteoporosis; however, few studies have investigated the potential of epigenetic therapy to improve or rescue the osteogenic ability of bone marrow mesenchymal stem cells(BMMSCs) under osteoporotic conditions. Here, we investigated pargyline, an inhibitor of lysine-specific demethylase 1(LSD1), which mainly catalyzes the demethylation of the di- and mono-methylation of H3K4. We demonstrated that 1.5 mmol·Lpargyline was the optimal concentration for the osteogenic differentiation of human BMMSCs. Pargyline rescued the osteogenic differentiation ability of mouse BMMSCs under osteoporotic conditions by enhancing the dimethylation level of H3K4 at the promoter regions of osteogenesis-related genes. Moreover, pargyline partially rescued or prevented the osteoporotic conditions in aged or ovariectomized mouse models, respectively. By introducing the concept of epigenetic therapy into the field of osteoporosis, this study demonstrated that LSD1 inhibitors could improve the clinical practice of MSC-based bone tissue engineering and proposes their novel use to treat osteoporosis.
基金The National Natural Science Foundation for Young Scholars of China under contract No.41506164the foundation of the State Oceanic Administration of China under contract No.201105011+3 种基金the Natural Science Foundation for Young Scholars of Fujian Province under contract No.2017J05062China-ASEAN maritime cooperation fund under contract No.HX150702the foundation of the Ministry of Agriculture of the People’s Republic of China under contract No.1070413701307the Ocean Park Conservation Foundation,Hong Kong(OPCFHK)under contract No.MM03_1617
文摘The analysis of cetacean strandings can provide fundamental information about species diversity and composition in a particular region. The present study collected and analyzed cetacean strandings, bycatches and rescues along the western coast of the Taiwan Strait, China, from 2010 to 2015. In total, 48 records, including 37 strandings, 8 bycatches and 3 rescues, involving 13 known species were collected. Among them, Indo-Pacific humpback dolphins（Sousa chinensis） and finless porpoises（Neophocaena phocaenoides） were the most common species, consisting of 31.3% and 25%, respectively. Notably, 10 out of the 48（20.8%） records were collected from the Pingtan Island and included 3 species of Mysticeti and 4 species of Odontoceti. Finally, we compared the cetacean species composition between the western and eastern coasts of the Taiwan Strait; 31 cetacean species occurred in the Taiwan Strait, indicating a relatively high cetacean diversity in this region. Systematic field surveys are urgently needed to explore the cetacean species composition, population stock and the related habitat status in the Taiwan Strait, which may improve conservation management in the future.
基金National Natural Science Foundation of China(11775280)Western Talents Program of Chinese Academy of Sciences(Y866020XB0)Natural Science Foundation of Gansu Province(18JR3RA391)。
文摘Emerging evidence indicates that reprogramming of energy metabolism involving disturbances in energy production from a defect in cellular respiration with a shift to glvcolvsis is a core hallmark of cancer[1].
文摘This paper addresses the problem of multi-objective coalition formation for task allocation. In disaster rescue, due to the dynamics of environments, heterogeneity and complexity of tasks as well as limited available agents, it is hard for the single-objective and single （task）-to-single （agent） task allocation approaches to handle task allocation in such circumstances. To this end, two multi-objective coalition formation for task allocation models are proposed for disaster rescues in this paper. First, through coalition formation, the proposed models enable agents to cooperatively perform complex tasks that cannot be completed by single agent. In addition, through adjusting the weights of multiple task allocation objectives, the proposed models can employ the linear programming to generate more adaptive task allocation plans, which can satisfy different task allocation requirements in disaster rescue. Finally, through employing the multi-stage task allocation mechanism of the dynamic programming, the proposed models can handle the dynamics of tasks and agents in disaster environments. Experimental results indicate that the proposed models have good performance on coalition formation for task allocation in disaster environments, which can generate suitable task allocation plans according to various objectives of task allocation.
文摘高速游艇在海上发生了故障,Lenny Leon Peter便在海上漂泊了 26日,终于被英国 HMS Grafton号护卫舰发现,而九死一生。文章中两次出现了spot一词,而不是用see,discover等动词,值得体味。因为spot的确切含义是:todetect or discern,especially visually/辨认或认出,特别指用眼睛看出。有趣的是,文中出现了lookout一词,其确切含义,你可要当心哟。
基金supported by the National Natural Science Foundation of China(No.32020103011,32001905,and 31871976).
文摘The endosymbiont Wolbachia manipulates host reproduction by several strategies, one of the most important of which is cytoplasmic incompatibility (CI). CI can be rescued when Wolbachia-infected males mate with females infected with the same Wolbachia strain. However, the potential rescue mechanism of CI in the small brown planthopper Laodelphax striatellus is unclear. In this study, comparative transcriptome analysis was applied to explore the effect of Wolbachia on L. striatellus eggs. A total of 1387 differentially expressed genes were identified. RNA interference of 7 Wolbachia-upregulated key planthopper genes reduced egg reproduction, suggesting that Wolbachia might improve fecundity in L. striatellus by affecting these 7 genes. Suppressing the expression of another upregulated gene, NDUFA8 (encoding NADH dehydrogenase [ubiquinone] 1 α subcomplex subunit 8-like) by RNA interference significantly increased the mortality of early embryos without affecting the number of deposited eggs. Wolbachia infection upregulated the mRNA level of NDUFA8, and dsNDUFA8 treatment of Wolbachia-infected females recreated CI-like symptoms, suggesting that NDUFA8 is associated with the rescue phenotype. Because all L. striatellus populations worldwide are infected with Wolbachia, NDUFA8 is a potential pest control target.
基金Supported by National Natural Science Foundation of China(Grant No.52475032)Central Government Guides Local Science and Technology Development Fund Projects(Grant No.246Z2001G)Hebei Provincial Natural Science Foundation Key Projects(Grant No.E2021203125).
文摘The existing research on rescue robots has focused mainly on reconnaissance,detection,and firefighting,and a small number of robots that can achieve human rescue have problems such as poor safety and stability and insufficient carrying capacity.This article addresses the above issues and cleverly combines the advantages of soft robotic arms,underactuated robotic arms,and suction cups based on the principles of bionics.A new design for a robotic arm was proposed,and its working principle was explained.Then,the human rescue process was divided into two stages,and the grasping force of the robotic arm in each stage was analyzed separately.Finally,a prototype of the principle was developed,and the feasibility of the design principle of the robotic arm was verified through grasping experiments on a cross-sectional contour model of the human chest.At the same time,grasping experiments were conducted on different objects to demonstrate the potential application of the robotic arm in grasping ground objects.This research proposes a stress envelope adsorption rescue robot arm inspired by the adhesion ability of the Drosera plant and the stress envelope effect,which can apply force to the entire surface of the human body,reduce local force on the human body,ensure load-bearing capacity and adaptability,and improve the safety and stability of rescue grasping.
文摘More than eighty years ago,when the Nazis brutally persecuted and mass-murdered the Jews,and nearly every country in the world shut its door to them desperately seeking refuge,the Chinese people,especially those of the city of Shanghai,opened their arms to the European Jews at this critical moment.
文摘1 On December 26,2024,a remarkable act of heroism took place at Poospatuck Creek.Kayla Masotto,a 28⁃year⁃old resident of Mastic,Long Island,stepped into the role of a life⁃saver when she witnessed a man fall through the ice on the lake.2 At about 6 pm,Kayla was washing vegetables in the kitchen when her attention was suddenly caught by a boy skating alone on the lake.In a split second,she witnessed the ice beneath him break,and the boy fell into the water.Without any hesitation,Kayla immediately grabbed her paddleboard(桨叶式冲浪板)and ran across her backyard,reaching the edge of the lake in seconds.
文摘Charlie,a father from Sunderland,was enjoying a meal with friends when sudden panic erupted at a nearby table.A woman began to choke,her face turning red as her breaths became shallow.Her friend wildly pounded her back,and others yelled for help.Without hesitation,Charlie sprang into action.
文摘主题语境:动物保护篇幅:316词建议用时:6分钟。1 A kayaking(皮划艇)guide turned into a real-life hero by saving a baby seal's life.He cut a dangerous fishing line off the seal's neck,an act that truly made a difference.2 Earlier this month,a remarkable video was filmed at Walvis Bay,Namibia.In it,SJ Louw could be seen springing into action to give the seal pup a new opportunity for life.
文摘Researchers have discovered that mice instinctively exhibit rescue-like behavior towards anesthetized companions-a finding that suggests a biological basis for prosociality.The study,published in PNAS on April 23,2025,was led by Dr.HU Li from the Institute of Psychology of the Chinese Academy of Sciences(IPCAS)and Dr.CHEN Zhoufeng from Washington University School of Medicine and the Shenzhen Medical Academy of Research and Translation.
文摘A devastating disease called Huanglongbing(HLB) or citrus green is wiping out citrus trees across the globe. But we are seeing new hope. Scientists have recently uncovered a hidden battle happening inside citrus plants. Understanding this microscopic tug-of-war could be the key to rescuing our beloved oranges, lemons, and grapefruits.
基金supported by the State Key Laboratory of Subtropical Building and Urban Science (No.2024KA03)Southwest University Graduate Research Innovation Project (Grant No.SWUB23043)+1 种基金the China Meteorological Administration “Research on value realization of climate ecological products” Youth Innovation Team Project (No.CMA2024QN15)Chongqing Natural Science(No.CSTB2024NSCQ-MSX0670)。
文摘Climate change exacerbates tourism emergencies, making it increasingly critical to enhance mitigation and adaptation capacity to alleviate extreme climate's impacts during tourism. Climate-induced impacts and threats in mountainous tourism areas are more challenging given complex terrains and multiple risk sources. Prior studies have focused on assessing climate-related impacts in mountainous tourism areas, while limited studies have investigated the emergency rescue capacity of mountainous tourism areas. This largely constrains decision makers to adopt proper solutions to enhance emergency rescue capacity. To address this research challenges, this study aims to assess emergency rescue capability through an empirical study of the Wulong Karst Tourism Destination(WKTD) area in Chongqing, China. In particular, based on road network and emergency response facility data, the accessibility of road network was delineated by the Spatial Design Network Analysis(s DNA) model. The results indicate that fire and medical rescue facilities were extremely limited and their service coverage was irregular. Valleys significantly narrowed rescue facilities' service area and weakened their functional connection. With the vital 60-minute timeframe, the closeness and betweenness analyses revealed the low accessibility of global rescue roads, while relatively high accessibility of small-scale vehicle and pedestrian rescue roads. The Mean Crow Flight(MCF) and Diversion Ratio(DR) analyses verified that the accessibility of road rescue services was impeded by mountainous terrain. Overall, this study informs solutions pertaining to rescue and disaster mitigation in mountainous tourism areas.
文摘1 The grandfather was choking on a mouthful of food,unable to breathe and unable to cough.The grandson,recalling the important lesson learned during the 8-13 Project organized by the Italian Red Cross⁃Poggi⁃Sermide Committee,suggested performing the Heimlich manoeuvre(海姆立克急救法)on the elderly man.
文摘City of Muskogee Animal Control Supervisor Phil Blair is known for his devotion to animals,but his quick thinking this week took that commitment to a whole new level-saving the life of an unborn baby deer after a tragic accident.Blair was called to the scene of a deer struck by a car.Upon arrival,he found the mother deer had suffered four broken legs and sadly had to be put down to prevent further suffering.
文摘Objective:To explore the application effect of emergency rescue capability intervention among students in a university in Beijing.Methods:A total of 900 students from a university in Beijing in 2023 were selected as the research objects.Emergency rescue capability training was conducted from March 2023 to June 2023,once a month.The students’mastery of emergency rescue before and after the intervention was analyzed.Survey questionnaires were distributed to all college students to understand their channels and willingness to acquire emergency rescue knowledge.Results:A total of 886 valid questionnaires were collected in this study.The highest proportion of knowledge about China’s general emergency telephone number and how to dial the emergency rescue hotline was 100.00%.Among the strategies for dealing with cardiac arrest in CPR,the highest proportion was 336.34%.Among the four major first aid techniques of hemostasis,bandaging,fixation,transportation,the highest proportion of knowledge about the use of rubber band signs was 31.71%.Among the first aid techniques for heatstroke,poisoning,fire,and sharp instrument injuries,the principle of emergency treatment for severe gas poisoning had the highest proportion of 41.42%,showing significant differences.College students mainly acquire knowledge of emergency rescue capability through TV programs,health education lectures,and the internet.Around 61.40%of college students hope to learn more about prevention and control knowledge.Conclusion:After the intervention of emergency rescue capability,the emergency rescue capability of college students in this university has been significantly improved,showing a strong training effect,which is worthy of promotion.
基金Zhejiang Provincial Natural Science Foundation of China(No.LY22E050013)China Postdoctoral Science Foundation(No.2021M690545)National Natural Science Foundation of China(No.51805124).
文摘High-altitude rescue is dangerous and difficult.A new rescue method is proposed here based on electromagnetically launched tethered nets.Four electromagnetic launching units are attached to a revolving platform,from which four projectiles are launched.The four projectiles are connected to a tethered net,bringing it into motion.As the tethered net approaches and comes into contact with the object,the object will be trapped,and the rescue task will then be completed as long as the tethered net can be restored along with the trapped object.The structural design of the electromagnetic launching unit is presented with the established mathematical model.The motion characteristics of the launched projectiles are studied and their exit velocities are modeled and measured.Terminal velocities of these projectiles are characterized,and the final shape and position of the projected tethered net are obtained.This study validates the feasibility of using electromagnetically launched tethered nets to perform high-altitude rescues.
基金funded by the European Commission H2020 Research and Innovation Programme through the HARNESSTOM innovation action(Grant No.101000716)Grant CIPROM/2021/020(project SOLECO)funded by Conselleria d’Innovació,Universitats,Ciència i Societat Digital(Generalitat Valenciana,Spain)Pietro Gramazio received a post-doctoral fellowship(Grant No.RYC2021-031999-I)funded by MCIN/AEI/10.13039/501100011033 and by“European Union NextGenerationEU/PRTR”。
文摘Unlike other major crops,little research has been performed on tomato to reduce the generation time for speed breeding.We evaluated several agronomic treatments to reduce the generation time of tomato in the‘M82'(determinate)and‘Moneymaker'(indeterminate)varieties and evaluated the best combination in conjunction with embryo rescue.Five container sizes with volumes of 0.2 L(XS),0.45 L(S),0.8 L(M),1.3 L(L),and6 L(XL),were evaluated in the first experiment under the autumn cycle.We found that plants grown in XL containers exhibited better development and required less time from sowing to anthesis(DSA)and from anthesis to fruit ripening(DAR).In the second experiment,using XL containers in the autumn-winter cycle,we evaluated the effects of cold priming at the cotyledonary stage,water stress,P supplementation,and K supplementation on generation time.Compared to the control,we found that cold priming significantly reduced the number of leaves,plant height to first the inflorescence,and DSA(2.7 d),whereas K supplementation reduced the DAR(8.8 d).In contrast,water stress and P supplementation did not significantly affect any of the measured traits like DAR,DSA or fruit set.To validate these data,in a third experiment with XL containers in the spring-summer cycle,the combination of cold priming and K supplementation was tested,confirming the significant effect of this combination on the reduction of generation time(2.9 d for DSA and 3.9 d for DAR)compared to the control.Embryo rescue during the cell expansion cycle(average of 22.0 d and 23.3 d after anthesis for‘M82'and‘Moneymaker',respectively)allowed the shortening of the generation time by 8.7 d in‘M82'and 11.6 d in‘Moneymaker'compared to the in planta fruit ripening.The combination of agronomic treatments with embryo rescue can effectively increase the number of generations per year from three to four for speed breeding of tomato.
基金supported by Postgraduate Research&Practice Innovation Program of Jiangsu Province under Grant KYCX22_0290.
文摘The ability of cyborg locusts to achieve directional movement in complex outdoor environments is critical for search and rescue missions.Currently,there is a lack of research on motion control for cyborg locusts in outdoor settings.In this study,we developed cyborg locusts capable of performing directional locomotion in intricate outdoor environments,including jumping over obstacles,climbing slopes,traversing narrow pipelines,and accurately reaching predetermined targets along specified routes.We designed a miniature electrical backpack(10 mm×10 mm,0.75 g)capable of receiving stimulus parameters(frequency,duty ratio,and stimulation time)via Bluetooth commands from mobile phones.Electrical stimulation of locust sensory organs,such as the antennae and cercus,induced turning and jumping behaviors.Experi-mental testing of locust movement control was conducted under outdoor conditions with a short electrical stimulation interval.Results showed a positive correlation between locust turning angles and electrical stimulation parameters within a specified range,with an average jumping height exceeding 10 cm.Additionally,the success rate of locust turning and jumping behaviors correlated positively with the interval time between electrical stimulations.Adjusting these intervals during forward crawling phases increased the likelihood of the locusts jumping again.In conclusion,this study success-fully achieved directional locomotion control of cyborg locusts outdoors,providing insights and references for advancing search and rescue capabilities.
