The mineral composition of the sinter affects the quality of cold-bonded briquettes(CBB),which are prepared from returned sinter fines and serve as a cleaner blast furnace charge.Pulverization rate,compressive strengt...The mineral composition of the sinter affects the quality of cold-bonded briquettes(CBB),which are prepared from returned sinter fines and serve as a cleaner blast furnace charge.Pulverization rate,compressive strength,reduction disintegration index(RDI)and compressive strength after reduction experiment were tested to analyze the experimental parameters of CBB under the influence of different basicities and sintering time.The results show that when the basicity of CBB is increased from 0.5 to 1.5,the pulverization rate increases,and performance indexes such as compressive strength,RDI,and compressive strength exhibit a decreasing trend.When the basicity is increased from 1.5 to 3.0,all the aforementioned performance indexes are improved.When the sintering time is extended from 0 to 8 h,the properties mentioned above are improved.The results of X-ray diffraction,microstructure,and thermodynamic calculations confirm that the hematite in the mineral composition of CBB tends to convert into calcium ferrite,which leads to the increased compressive strength of CBB.The reasonable basicity and sintering time during sinter preparation not only form the desired mineral composition but also improve the properties of the CBB.展开更多
The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of a...The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of asteroids that co-orbit closely with,but are outside the gravitational control of,the planet.So far,only five Earth quasi-satellites have been recognized,among which(469219)Kamo’oalewa(provisionally designated as 2016 HO3)is currently considered the most stable and the closest of these.However,little is known about this particular asteroid or this class of near-Earth asteroids because of the difficulties of observing them.China has announced that Tianwen-2,the asteroid sample-return mission to Kamo’oalewa,will be launched in 2025.Here,we review the current knowledge of Kamo’oalewa in terms of its physical characteristics,dynamic evolution,surface environment,and origin,and we propose possible breakthroughs that the samples could bring concerning the asteroid Kamo’oalewa as an Earth quasi-satellite.Confirming the origin of Kamo’oalewa,from its prevailing provenance as debris of the Moon,could be a promising start to inferring the evolutionary history of the Moon.This history would probably include a more comprehensive view of the lunar farside and the origin of the asymmetry between the two sides of the Moon.Comparing the samples from the Moon and Kamo’oalewa would also provide new insights into the Earth wind.展开更多
In Conan Doyle’s detective stories mainly including“The Resident Patient,”“The Gloria Scott,”“The Adventure of Blanched Soldier,”and“The Crooked Man,”featuring the master sleuth character Sherlock Holmes,he d...In Conan Doyle’s detective stories mainly including“The Resident Patient,”“The Gloria Scott,”“The Adventure of Blanched Soldier,”and“The Crooked Man,”featuring the master sleuth character Sherlock Holmes,he depicts the return of the colonials from British colonies,mostly India,with physically deformed or ravaged body and traumatic past that haunt and trouble his characters’present life.Doyle allegorically uses returned colonials or poor whites who turn into figures of retributive ghosts that function as pathetic memories and inner fears from British colonies.The seeing of ghostly figures and haunting past events delineated in these stories cause characters’sense of uncanny horror and remind them of their past trauma.These monstrous returned colonials or poor whites often create a fear and a social menace that must be appropriately dealt with when the master sleuth is commissioned to pin down the truth of client’s cases.Why are these bodies of ghostly figures so“irregular”and ravaged?What do these deformities signify?How can returned colonial’s or poor white’s traumatic past be related to retributive ghost?This paper attempts to probe into these issues in order to find out possible answers.展开更多
With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business mode...With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business model and capital input,some people have been exploring new regional markets for fresh produce and seeking improvement in produce quality,standards and展开更多
This paper attempts to unfold certain socio-economic characteristics of Albanian undocumented or ＂irregular＂ migrants returning from EU member states. The idea emerged from an IOM research followed by a study conduc...This paper attempts to unfold certain socio-economic characteristics of Albanian undocumented or ＂irregular＂ migrants returning from EU member states. The idea emerged from an IOM research followed by a study conducted two years ago （2007-2008） on this particular Albanian migratory development. The paper aims to contribute to the early chapters of a future potential empirical research, thus stimulating theoretical discourses towards defining the socio-economic profile of Albanian returned migrants. The research among Albanian undocumented migrants returned from Greece, the UK, etc., indicates that many of the above migrants were found to be recidivists, crossing borders frequently and undocumented. Greece being the main destination and simultaneously （deporting） country, leads to the assumption that it is the main destination country for undocumented migrants. The number of Albanian returnees from Greece reaches its peak, notably in April and September, with the start of seasonal works. The number of returned Albanian minors invoke problematics that demand for appropriate attention and assistance during the procedures of readmission （return, handover by the returning authorities, readmission by Albanian authorities etc.）. With regard to causes of undocumented migration, one might identify a slight tendency among undocumented young migrants, to qualify poverty as the main reason rather than lack of working opportunities as Albanian middle age migrants would argue.展开更多
According to statistics from Ministry of Education,from the Reform and Opening up to the end o2013,the number of various kinds o overseas students had reached 3.0586million.The number in 2013 was413 900.
LIGHT struggles to break through the early morning fog that hangs over still water. It＇s 50 shades of grey. Even breathing disturbs the silence. A small cluster of trees break the water＇s surface, spindly branches f...LIGHT struggles to break through the early morning fog that hangs over still water. It＇s 50 shades of grey. Even breathing disturbs the silence. A small cluster of trees break the water＇s surface, spindly branches forlorn in their empty surroundings. It＇s a tranquil setting depicted in thousands of Chinese ink paintings.展开更多
EDITOR’S NOTE: They returned With an upset mind. Once they set foot on the soil where they were born and brought up, they found themselves enveloped in familylike warmth. All these help ease their suspective mind.
The author was born in December 1943 in the Qamdo Prefecture and died of illness in 2000. She was a writer and a member of the Tibet Branch of the Chinese Association of Writers. She used to be head of Nagqu Prefectur...The author was born in December 1943 in the Qamdo Prefecture and died of illness in 2000. She was a writer and a member of the Tibet Branch of the Chinese Association of Writers. She used to be head of Nagqu Prefecture, Deputy Director of the Nagqu Prefectural Bureau of Animal Husbandry, Vice-Chairman of the Tibet Association of Literary and Art Circles, Chairman of the Tibet Association of Folk Literature Writers, President of the Tibet Society of Folk Culture and Chief Editor of Tibet Folklore. Her works include Changtang Grasslands and I. Here is a story she once wrote.展开更多
The effects of amount of green manure returned to field on yield and quality of flue-cured tobacco were studied by field experiment. The results showed that significant positive correlation existed between tobacco lea...The effects of amount of green manure returned to field on yield and quality of flue-cured tobacco were studied by field experiment. The results showed that significant positive correlation existed between tobacco leaf yield and small or moderate amount of green manure returned to field. Path analysis showed that moderate amount of green manure returned to field affected yield and quality of tobacco leaves, small green manure returned to field mainly affected leaf yield, while large amount of green manure returned to field mainly affected leaf quality. Therefore, the effect of moderate amount of green manure returned to field on yield and quality of tobacco leaves was best, and moderate amount of green manure returned to field was recommended in production of flue-cured tobacco.展开更多
Ancestral return-return by the descendants of migrants to their ancestors＇ origin has been one of the most significant forms of population mobility since 1991 in the Republic of Kazakhstan. The state policy determine...Ancestral return-return by the descendants of migrants to their ancestors＇ origin has been one of the most significant forms of population mobility since 1991 in the Republic of Kazakhstan. The state policy determines the scales of ethnic migration to and within the country. The government adopted a complex program on Kazakh Diaspora repatriation. Under the program, oralmans （ethnic repatriates to the country） are provided with considerable aid program for adaptation to the recipient society. Although the returnees may initially be welcomed back, their homecomings often prove to be ambivalent or negative experiences. Despite their ethnic affinity to the host populace, they are frequently excluded as cultural foreigners and relegated to low-status jobs shunned by the host society＇s populace. Ethnic return migrants and their hosts become frustrated with each other. They find jobs but not expected social welcome. Ethnic return migrant＇s orientations usually are shaped by the terms of the policies that give them the access to the destination country＇s labor markets and citizenship. The report studies the problem of similarity and differences among Ethnic Return Migrants and mother ethnic group. What underlies the misunderstanding between them？ Whether it is a competition for the working places, access to the social benefits or deep cultural differences？ To examine on-the-ground dynamics between natives and ethnic migrants, and in particular their mutual acceptance in a range of contexts, we turn to a qualitative account that draws on observations and interviews, less formal interviews carried out among Mongolian-Kazakh, Chinese-Kazakh and Karakalpak- Kazakh return Migrants in Almaty city and its suburbs during the fieldwork. Characteristics that differentiate returned Diaspora individuals from Kazakhstani Kazakhs are rooted not in ethnic sphere, but in the cultural context of the country they come from. This paper reveals how the socio-cultural characteristics and national origins of the migrants influence their levels of marginalization in their ethnic homelands, forcing many of them to redefine the meanings of home and homeland.展开更多
This work demonstrates experimentally the close relation between return currents from relativistic laser-driven target polarization and the quality of the relativistic laser–plasma interaction for laser-driven second...This work demonstrates experimentally the close relation between return currents from relativistic laser-driven target polarization and the quality of the relativistic laser–plasma interaction for laser-driven secondary sources,taking as an example ion acceleration by target normal sheath acceleration.The Pearson linear correlation of maximum return current amplitude and proton spectrum cutoff energy is found to be in the range from~0.70 to 0.94.kA-scale return currents rise in all interaction schemes where targets of any kind are charged by escaping laser-accelerated relativistic electrons.Their precise measurement is demonstrated using an inductive scheme that allows operation at high repetition rates.Thus,return currents can be used as a metrological online tool for the optimization of many laser-driven secondary sources and for diagnosing their stability.In particular,in two parametric studies of laser-driven ion acceleration,we carry out a noninvasive online measurement of return currents in a tape target system irradiated by the 1 PW VEGA-3 laser at Centro de Láseres Pulsados:first the size of the irradiated area is varied at best compression of the laser pulse;second,the pulse duration is varied by means of induced group delay dispersion at best focus.This work paves the way to the development of feedback systems that operate at the high repetition rates of PW-class lasers.展开更多
During cardiac arrest (CA),severe ischemia and hypoxia occur in tissues and organs of the entire body,inflammatory cytokines are released,and ischemiareperfusion injury occurs after the return of spontaneous circulati...During cardiac arrest (CA),severe ischemia and hypoxia occur in tissues and organs of the entire body,inflammatory cytokines are released,and ischemiareperfusion injury occurs after the return of spontaneous circulation (ROSC),leading to multiple organ dysfunction in the body;this condition is called post-CA syndrome(PCAS).^([1])According to the BASeline Investigation of Out-of-Hospital Cardiac Arrest (BASIC-OHCA) study,the crude incidence of emergency medical service (EMS)-assessed OHCA was 95.7 per 100,000 individuals,and only1.2%of those individuals survived to hospital discharge or30 d after being resuscitated by the EMS in China.展开更多
BACKGROUND Return to work(RTW)serves as an indication for young and middle-aged colorectal cancer(CRC)survivors to resume their normal social lives.However,these survivors encounter significant challenges during their...BACKGROUND Return to work(RTW)serves as an indication for young and middle-aged colorectal cancer(CRC)survivors to resume their normal social lives.However,these survivors encounter significant challenges during their RTW process.Hence,scientific research is necessary to explore the barriers and facilitating factors of returning to work for young and middle-aged CRC survivors.AIM To examine the current RTW status among young and middle-aged CRC survivors and to analyze the impact of RTW self-efficacy(RTW-SE),fear of progression(FoP),eHealth literacy(eHL),family resilience(FR),and financial toxicity(FT)on their RTW outcomes.METHODS A cross-sectional investigation was adopted in this study.From September 2022 to February 2023,a total of 209 participants were recruited through a convenience sampling method from the gastrointestinal surgery department of a class A tertiary hospital in Chongqing.The investigation utilized a general information questionnaire alongside scales assessing RTW-SE,FoP,eHL,FR,and FT.To analyze the factors that influence RTW outcomes among young and middle-aged CRC survivors,Cox regression modeling and Kaplan-Meier survival analysis were used.RESULTS A total of 43.54%of the participants successfully returned to work,with an average RTW time of 100 days.Cox regression univariate analysis revealed that RTW-SE,FoP,eHL,FR,and FT were significantly different between the non-RTW and RTW groups(P<0.05).Furthermore,Cox regression multivariate analysis identified per capita family monthly income,job type,RTW-SE,and FR as independent influencing factors for RTW(P<0.05).CONCLUSION The RTW rate requires further improvement.Elevated levels of RTW-SE and FR were found to significantly increase RTW among young and middle-aged CRC survivors.Health professionals should focus on modifiable factors,such as RTW-SE and FR,to design targeted RTW support programs,thereby facilitating their timely reintegration into mainstream society.展开更多
Till date,no study on trends in extreme sea surface temperature(SST)for different return periods has been done over the Gulf of Tonkin(GoT).Based on a 84-year(1940–2023)ERA5 Reanalysis data sets,this study for the fi...Till date,no study on trends in extreme sea surface temperature(SST)for different return periods has been done over the Gulf of Tonkin(GoT).Based on a 84-year(1940–2023)ERA5 Reanalysis data sets,this study for the first time,examined the spatio-temporal pattern in extreme SST for different return periods.Findings showed that more significant moderate to fast warming trends(0.1–0.16°C per decade(dec-1))only existed for the 2 year return period.Temporal trends in the 99th percentile SST are insignificant for all return periods.By using the linear regression method,the variability in extreme SST was obtained.Results showed that moderate warming trends dominated a large portion of GoT.Stronger trends,up to 0.018°C yr-1 are noticed near Guangdong,Haikou and southern Sanya in south China.Extreme SST exhibited a slow warming trend of 0.008°C per year(yr-1)all through the study years.The SST is most stable in most waters in the southern GoT and few waters surrounding Dongfang.Temporal warming rates of SST revealed that 1940–1958,1976–1994 and 2003–2012 were years of more coastal upwelling and could affect aquatic lives.The strongest warming rate of 0.07°C dec-1 occurred during 1994–2003.The GoT appeared warmer during spring.Spatial decadal variability of SST revealed that moderate warming trends occurred in few regions in the southern GoT and in larger portion of the central and northern GoT.The rise in SST between 1980 and 2020 in the GoT is not limited to increased anthropogenic activities.展开更多
基金supported by Distinguished Professor(Tracking Plan)of Oriental Scholars of Shanghai Universities(Grant No.GZ2020013)National 111 Project(The Program of Introducing Talents of Discipline to University)(Grant No.Dl7002)+1 种基金Independent Research Project of State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced Ferrometallurgy and Shanghai University(Grant No.SKLASS 2022-Z011)Additionally,the authors are appreciative of the funding from the Academy of Finland with Grant No.349833.
文摘The mineral composition of the sinter affects the quality of cold-bonded briquettes(CBB),which are prepared from returned sinter fines and serve as a cleaner blast furnace charge.Pulverization rate,compressive strength,reduction disintegration index(RDI)and compressive strength after reduction experiment were tested to analyze the experimental parameters of CBB under the influence of different basicities and sintering time.The results show that when the basicity of CBB is increased from 0.5 to 1.5,the pulverization rate increases,and performance indexes such as compressive strength,RDI,and compressive strength exhibit a decreasing trend.When the basicity is increased from 1.5 to 3.0,all the aforementioned performance indexes are improved.When the sintering time is extended from 0 to 8 h,the properties mentioned above are improved.The results of X-ray diffraction,microstructure,and thermodynamic calculations confirm that the hematite in the mineral composition of CBB tends to convert into calcium ferrite,which leads to the increased compressive strength of CBB.The reasonable basicity and sintering time during sinter preparation not only form the desired mineral composition but also improve the properties of the CBB.
基金supported by the National Natural Science Foundation of China(Grant Nos.42241106 and 42388101).
文摘The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of asteroids that co-orbit closely with,but are outside the gravitational control of,the planet.So far,only five Earth quasi-satellites have been recognized,among which(469219)Kamo’oalewa(provisionally designated as 2016 HO3)is currently considered the most stable and the closest of these.However,little is known about this particular asteroid or this class of near-Earth asteroids because of the difficulties of observing them.China has announced that Tianwen-2,the asteroid sample-return mission to Kamo’oalewa,will be launched in 2025.Here,we review the current knowledge of Kamo’oalewa in terms of its physical characteristics,dynamic evolution,surface environment,and origin,and we propose possible breakthroughs that the samples could bring concerning the asteroid Kamo’oalewa as an Earth quasi-satellite.Confirming the origin of Kamo’oalewa,from its prevailing provenance as debris of the Moon,could be a promising start to inferring the evolutionary history of the Moon.This history would probably include a more comprehensive view of the lunar farside and the origin of the asymmetry between the two sides of the Moon.Comparing the samples from the Moon and Kamo’oalewa would also provide new insights into the Earth wind.
文摘In Conan Doyle’s detective stories mainly including“The Resident Patient,”“The Gloria Scott,”“The Adventure of Blanched Soldier,”and“The Crooked Man,”featuring the master sleuth character Sherlock Holmes,he depicts the return of the colonials from British colonies,mostly India,with physically deformed or ravaged body and traumatic past that haunt and trouble his characters’present life.Doyle allegorically uses returned colonials or poor whites who turn into figures of retributive ghosts that function as pathetic memories and inner fears from British colonies.The seeing of ghostly figures and haunting past events delineated in these stories cause characters’sense of uncanny horror and remind them of their past trauma.These monstrous returned colonials or poor whites often create a fear and a social menace that must be appropriately dealt with when the master sleuth is commissioned to pin down the truth of client’s cases.Why are these bodies of ghostly figures so“irregular”and ravaged?What do these deformities signify?How can returned colonial’s or poor white’s traumatic past be related to retributive ghost?This paper attempts to probe into these issues in order to find out possible answers.
文摘With the 19th anniversary of the handover of Hong Kong back to China,the fresh produce supplied to Hong Kong also returned to domestic market.Since the focus of e-commerce competition has shifted towards business model and capital input,some people have been exploring new regional markets for fresh produce and seeking improvement in produce quality,standards and
文摘This paper attempts to unfold certain socio-economic characteristics of Albanian undocumented or ＂irregular＂ migrants returning from EU member states. The idea emerged from an IOM research followed by a study conducted two years ago （2007-2008） on this particular Albanian migratory development. The paper aims to contribute to the early chapters of a future potential empirical research, thus stimulating theoretical discourses towards defining the socio-economic profile of Albanian returned migrants. The research among Albanian undocumented migrants returned from Greece, the UK, etc., indicates that many of the above migrants were found to be recidivists, crossing borders frequently and undocumented. Greece being the main destination and simultaneously （deporting） country, leads to the assumption that it is the main destination country for undocumented migrants. The number of Albanian returnees from Greece reaches its peak, notably in April and September, with the start of seasonal works. The number of returned Albanian minors invoke problematics that demand for appropriate attention and assistance during the procedures of readmission （return, handover by the returning authorities, readmission by Albanian authorities etc.）. With regard to causes of undocumented migration, one might identify a slight tendency among undocumented young migrants, to qualify poverty as the main reason rather than lack of working opportunities as Albanian middle age migrants would argue.
文摘According to statistics from Ministry of Education,from the Reform and Opening up to the end o2013,the number of various kinds o overseas students had reached 3.0586million.The number in 2013 was413 900.
文摘LIGHT struggles to break through the early morning fog that hangs over still water. It＇s 50 shades of grey. Even breathing disturbs the silence. A small cluster of trees break the water＇s surface, spindly branches forlorn in their empty surroundings. It＇s a tranquil setting depicted in thousands of Chinese ink paintings.
文摘EDITOR’S NOTE: They returned With an upset mind. Once they set foot on the soil where they were born and brought up, they found themselves enveloped in familylike warmth. All these help ease their suspective mind.
文摘The author was born in December 1943 in the Qamdo Prefecture and died of illness in 2000. She was a writer and a member of the Tibet Branch of the Chinese Association of Writers. She used to be head of Nagqu Prefecture, Deputy Director of the Nagqu Prefectural Bureau of Animal Husbandry, Vice-Chairman of the Tibet Association of Literary and Art Circles, Chairman of the Tibet Association of Folk Literature Writers, President of the Tibet Society of Folk Culture and Chief Editor of Tibet Folklore. Her works include Changtang Grasslands and I. Here is a story she once wrote.
基金Supported by Project of Hunan Tobacco Monopoly Bureau
文摘The effects of amount of green manure returned to field on yield and quality of flue-cured tobacco were studied by field experiment. The results showed that significant positive correlation existed between tobacco leaf yield and small or moderate amount of green manure returned to field. Path analysis showed that moderate amount of green manure returned to field affected yield and quality of tobacco leaves, small green manure returned to field mainly affected leaf yield, while large amount of green manure returned to field mainly affected leaf quality. Therefore, the effect of moderate amount of green manure returned to field on yield and quality of tobacco leaves was best, and moderate amount of green manure returned to field was recommended in production of flue-cured tobacco.
文摘Ancestral return-return by the descendants of migrants to their ancestors＇ origin has been one of the most significant forms of population mobility since 1991 in the Republic of Kazakhstan. The state policy determines the scales of ethnic migration to and within the country. The government adopted a complex program on Kazakh Diaspora repatriation. Under the program, oralmans （ethnic repatriates to the country） are provided with considerable aid program for adaptation to the recipient society. Although the returnees may initially be welcomed back, their homecomings often prove to be ambivalent or negative experiences. Despite their ethnic affinity to the host populace, they are frequently excluded as cultural foreigners and relegated to low-status jobs shunned by the host society＇s populace. Ethnic return migrants and their hosts become frustrated with each other. They find jobs but not expected social welcome. Ethnic return migrant＇s orientations usually are shaped by the terms of the policies that give them the access to the destination country＇s labor markets and citizenship. The report studies the problem of similarity and differences among Ethnic Return Migrants and mother ethnic group. What underlies the misunderstanding between them？ Whether it is a competition for the working places, access to the social benefits or deep cultural differences？ To examine on-the-ground dynamics between natives and ethnic migrants, and in particular their mutual acceptance in a range of contexts, we turn to a qualitative account that draws on observations and interviews, less formal interviews carried out among Mongolian-Kazakh, Chinese-Kazakh and Karakalpak- Kazakh return Migrants in Almaty city and its suburbs during the fieldwork. Characteristics that differentiate returned Diaspora individuals from Kazakhstani Kazakhs are rooted not in ethnic sphere, but in the cultural context of the country they come from. This paper reveals how the socio-cultural characteristics and national origins of the migrants influence their levels of marginalization in their ethnic homelands, forcing many of them to redefine the meanings of home and homeland.
基金funding from the European Union’s Horizon 2020 research and innovation program through the European IMPULSE project under Grant Agreement No.871161from LASERLAB-EUROPE V under Grant Agreement No.871124+6 种基金from the Grant Agency of the Czech Republic(Grant No.GM23-05027M)Grant No.PDC2021120933-I00 funded by MCIN/AEI/10.13039/501100011033by the European Union Next Generation EU/PRTRsupported by funding from the Ministerio de Ciencia,Innovación y Universidades in Spain through ICTS Equipment Grant No.EQC2018-005230-Pfrom Grant No.PID2021-125389O A-I00 funded by MCIN/AEI/10.13039/501100011033/FEDER,UEby“ERDF A Way of Making Europe”by the European Unionfrom grants of the Junta de Castilla y León with Grant Nos.CLP263P20 and CLP087U16。
文摘This work demonstrates experimentally the close relation between return currents from relativistic laser-driven target polarization and the quality of the relativistic laser–plasma interaction for laser-driven secondary sources,taking as an example ion acceleration by target normal sheath acceleration.The Pearson linear correlation of maximum return current amplitude and proton spectrum cutoff energy is found to be in the range from~0.70 to 0.94.kA-scale return currents rise in all interaction schemes where targets of any kind are charged by escaping laser-accelerated relativistic electrons.Their precise measurement is demonstrated using an inductive scheme that allows operation at high repetition rates.Thus,return currents can be used as a metrological online tool for the optimization of many laser-driven secondary sources and for diagnosing their stability.In particular,in two parametric studies of laser-driven ion acceleration,we carry out a noninvasive online measurement of return currents in a tape target system irradiated by the 1 PW VEGA-3 laser at Centro de Láseres Pulsados:first the size of the irradiated area is varied at best compression of the laser pulse;second,the pulse duration is varied by means of induced group delay dispersion at best focus.This work paves the way to the development of feedback systems that operate at the high repetition rates of PW-class lasers.
基金National Key R&D Program of China (2020YFC1512700, 2020YFC1512705, 2020YFC1512703)National Science&Technology Fundamental Resources Investigation Project (2018FY100600, 2018FY100602)+3 种基金Key R&D Program of Shandong Province (2021ZLGX02, 2021SFGC0503, 2022ZLGX03)Taishan Pandeng Scholar Program of Shandong Province (tspd20181220)Taishan Scholar Program of Shandong Province (tsqn202211310)Interdisciplinary Young Researcher Groups Program of Shandong University (2020QNQT004)。
文摘During cardiac arrest (CA),severe ischemia and hypoxia occur in tissues and organs of the entire body,inflammatory cytokines are released,and ischemiareperfusion injury occurs after the return of spontaneous circulation (ROSC),leading to multiple organ dysfunction in the body;this condition is called post-CA syndrome(PCAS).^([1])According to the BASeline Investigation of Out-of-Hospital Cardiac Arrest (BASIC-OHCA) study,the crude incidence of emergency medical service (EMS)-assessed OHCA was 95.7 per 100,000 individuals,and only1.2%of those individuals survived to hospital discharge or30 d after being resuscitated by the EMS in China.
基金Supported by the Chongqing Medical University Program for Youth Innovation in Future Medicine,No.W0019Chongqing Municipal Education Commission’s 14th Five-Year Key Discipline Support Project,No.20240101 and No.20240102。
文摘BACKGROUND Return to work(RTW)serves as an indication for young and middle-aged colorectal cancer(CRC)survivors to resume their normal social lives.However,these survivors encounter significant challenges during their RTW process.Hence,scientific research is necessary to explore the barriers and facilitating factors of returning to work for young and middle-aged CRC survivors.AIM To examine the current RTW status among young and middle-aged CRC survivors and to analyze the impact of RTW self-efficacy(RTW-SE),fear of progression(FoP),eHealth literacy(eHL),family resilience(FR),and financial toxicity(FT)on their RTW outcomes.METHODS A cross-sectional investigation was adopted in this study.From September 2022 to February 2023,a total of 209 participants were recruited through a convenience sampling method from the gastrointestinal surgery department of a class A tertiary hospital in Chongqing.The investigation utilized a general information questionnaire alongside scales assessing RTW-SE,FoP,eHL,FR,and FT.To analyze the factors that influence RTW outcomes among young and middle-aged CRC survivors,Cox regression modeling and Kaplan-Meier survival analysis were used.RESULTS A total of 43.54%of the participants successfully returned to work,with an average RTW time of 100 days.Cox regression univariate analysis revealed that RTW-SE,FoP,eHL,FR,and FT were significantly different between the non-RTW and RTW groups(P<0.05).Furthermore,Cox regression multivariate analysis identified per capita family monthly income,job type,RTW-SE,and FR as independent influencing factors for RTW(P<0.05).CONCLUSION The RTW rate requires further improvement.Elevated levels of RTW-SE and FR were found to significantly increase RTW among young and middle-aged CRC survivors.Health professionals should focus on modifiable factors,such as RTW-SE and FR,to design targeted RTW support programs,thereby facilitating their timely reintegration into mainstream society.
文摘Till date,no study on trends in extreme sea surface temperature(SST)for different return periods has been done over the Gulf of Tonkin(GoT).Based on a 84-year(1940–2023)ERA5 Reanalysis data sets,this study for the first time,examined the spatio-temporal pattern in extreme SST for different return periods.Findings showed that more significant moderate to fast warming trends(0.1–0.16°C per decade(dec-1))only existed for the 2 year return period.Temporal trends in the 99th percentile SST are insignificant for all return periods.By using the linear regression method,the variability in extreme SST was obtained.Results showed that moderate warming trends dominated a large portion of GoT.Stronger trends,up to 0.018°C yr-1 are noticed near Guangdong,Haikou and southern Sanya in south China.Extreme SST exhibited a slow warming trend of 0.008°C per year(yr-1)all through the study years.The SST is most stable in most waters in the southern GoT and few waters surrounding Dongfang.Temporal warming rates of SST revealed that 1940–1958,1976–1994 and 2003–2012 were years of more coastal upwelling and could affect aquatic lives.The strongest warming rate of 0.07°C dec-1 occurred during 1994–2003.The GoT appeared warmer during spring.Spatial decadal variability of SST revealed that moderate warming trends occurred in few regions in the southern GoT and in larger portion of the central and northern GoT.The rise in SST between 1980 and 2020 in the GoT is not limited to increased anthropogenic activities.
