There is an amazing healing power in the novel The Country of the Pointed Firs embodied in nature and the local people. Reading this novel, everyone can be the narrator who has experienced a journey of healing in Dunn...There is an amazing healing power in the novel The Country of the Pointed Firs embodied in nature and the local people. Reading this novel, everyone can be the narrator who has experienced a journey of healing in Dunnet Landing during her interactions with the coastal natural sceneries and the lovely local residents in that in those small islands.展开更多
Rain-induced fruit cracking is a major problem in sweet cherry cultivation.Basic research has been conducted to disentangle the physiological and mechanistic bases of this complex phenomenon,whereas genetic studies ha...Rain-induced fruit cracking is a major problem in sweet cherry cultivation.Basic research has been conducted to disentangle the physiological and mechanistic bases of this complex phenomenon,whereas genetic studies have lagged behind.The objective of this work was to disentangle the genetic determinism of rain-induced fruit cracking.We hypothesized that a large genetic variation would be revealed,by visual field observations conducted on mapping populations derived from well-contrasted cultivars for cracking tolerance.Three populations were evaluated over 7–8 years by estimating the proportion of cracked fruits for each genotype at maturity,at three different areas of the sweet cherry fruit:pistillar end,stem end,and fruit side.An original approach was adopted to integrate,within simple linear models,covariates potentially related to cracking,such as rainfall accumulation before harvest,fruit weight,and firmness.We found the first stable quantitative trait loci(QTLs)for cherry fruit cracking,explaining percentages of phenotypic variance above 20%,for each of these three types of cracking tolerance,in different linkage groups,confirming the high complexity of this trait.For these and other QTLs,further analyses suggested the existence of at least two-linked QTLs in each linkage group,some of which showed confidence intervals close to 5 cM.These promising results open the possibility of developing marker-assisted selection strategies to select cracking-tolerant sweet cherry cultivars.Further studies are needed to confirm the stability of the reported QTLs over different genetic backgrounds and environments and to narrow down the QTL confidence intervals,allowing the exploration of underlying candidate genes.展开更多
Tree growth traits （tree height, DBH and stem volume） and survival from two 9-year-old, open-pollinated progeny tests of Chinese fir were investigated for heri- tability, genotype × environment interaction, age...Tree growth traits （tree height, DBH and stem volume） and survival from two 9-year-old, open-pollinated progeny tests of Chinese fir were investigated for heri- tability, genotype × environment interaction, age-age genetic correlation and selection efficiency. The 97 and 79 families planted at two sites were collected from the thirdcycle seed orchard. Individual heritability was estimated between 0.05 and 0.21 for tree height, DBH, and volume and between 0.45 and 1.0 for survival. Family heritability was between 0.20 and 1.14. Significant genotype x envi- ronment interaction was observed for the three growth traits. Type B genetic correlation was between 0.41 and 0.67 with an increasing trend as tree grows. High age-age genetic correlation was observed with correlation reaching 0.9 after age 4 for height, DBH, and volume. The genetic gains were estimated at 3.26, 3.39 and 5.98 % for tree height, DBH, and volume with 10 % selection intensity. The implication for advanced tree breeding in Chinese fir is discussed.展开更多
On July 11,2022,the firast youth editorial committee meeting of Naihuo Cailiao(Refractoriea,in Chinese,bi monthly)and China's Refractories(in English,quarterly)was held in Changsha,China.The first youth editorial ...On July 11,2022,the firast youth editorial committee meeting of Naihuo Cailiao(Refractoriea,in Chinese,bi monthly)and China's Refractories(in English,quarterly)was held in Changsha,China.The first youth editorial com mittee includes 47 members,who come from China Iron&Steel Research Institute Group,Henan University of Sci ence and Technology,Hunan University,Institute of Metal Research of Chinese Academy of Sciences,Jiangsu Jingxin New Materials Co.,Ltd,Kemeos(China)Aluminate Technologies Co.,Ltd,Luoyang Institute of Science and Technology,Northeastem University,RHI Magnesita,Shanghai University,Sinosteel Luonai Materials Technology Corporation,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd,Tianjin University,University of Science and Technology Beijing,Wuhan University of Science and Technology,Wuhan University of Technology.Xian Uni versity of Architecture and Technology.Zhejiang University,and Zhengzhou University.展开更多
The lander carrying China’s first Mars rover has touched down on the red planet,the China National Space Administration(CNSA)confirmed on the morning of May 15.It is the first time China has landed a probe on a plane...The lander carrying China’s first Mars rover has touched down on the red planet,the China National Space Administration(CNSA)confirmed on the morning of May 15.It is the first time China has landed a probe on a planet other than Earth.“The Mars exploration mission has been a total success,”Zhang Kejian,head of the CNSA,announced at the Beijing Aerospace Control Center.“It’s another important milestone for China’s space exploration。”展开更多
为有效滤除增强型远程导航(enhanced long range navigation, eLoran)信号传输过程中引入的频带内外噪声和干扰,提出了内插有限长单位冲激响应(finite impulse response, FIR)带通滤波与自适应陷波相结合的联合噪声抑制方法。首先,对含...为有效滤除增强型远程导航(enhanced long range navigation, eLoran)信号传输过程中引入的频带内外噪声和干扰,提出了内插有限长单位冲激响应(finite impulse response, FIR)带通滤波与自适应陷波相结合的联合噪声抑制方法。首先,对含噪原始信号进行内插FIR带通滤波,以抑制带外干扰;其次,采用自适应陷波滤除带内连续波干扰,有效恢复理想的eLoran信号;最后,将该方法在现场可编程门阵列(field-programmable gate array, FPGA)端实现。仿真结果表明,该滤波方法能有效抑制eLoran接收机接收信号的频带内外噪声和干扰,减少计算量并提高系统硬件利用率。展开更多
Understanding how genetic variation within forest species influences growth responses under climate change is essential for improving the accuracy of forest models and guiding adaptive management strategies.This study...Understanding how genetic variation within forest species influences growth responses under climate change is essential for improving the accuracy of forest models and guiding adaptive management strategies.This study models the dynamics of Italian silver fir(Abies alba)forests under varying climate change scenarios using the forest gap model FORMIND.Focusing on three distinct silver fir provenances(Western Alps,Northern Apennines,and Southern Apennines),the study simulates forest growth in the Tuscan-Emilian Apennine National Park under different representative concentration pathways(RCPs).The individual-based model FORMIND was parameterized and validated with field data for each of the provenances,demonstrating its ability to accurately reproduce key forest metrics and dynamics.Our results reveal significant differences in expected growth patterns,productivity,metabolism,and carbon storage capacity among the silver fir provenances in pure and mixed stands.In the simulations,the Northern Apennines provenance showed higher biomass production(biomass>10%±1%)and carbon uptake(net primary productivity,NPP>8%±1%)at the end of the century compared to the Western Alps provenance in the pure provenance(PP)and no regeneration scenario.Conversely,the Southern Apennines provenance showed higher biomass(biomass>5%–10%)and NPP(>15%–18%)in mixed provenance(MP)and regeneration scenarios.These results show that genetic diversity strongly affects forest growth and resilience to environmental changes.Hence,it should be included as a predictor variable in forest models.The study also demonstrates the resilience of silver fir to climatic stressors,emphasizing its potential as a robust species in multiple forest contexts.The integration of forest provenance data into the FORMIND model represents a significant advancement in forest modelling,enabling more accurate and reliable predictions under climate change scenarios.The study's findings advocate for a greater understanding and consideration of genetic diversity in forest management and conservation strategies,in support of assisted migration strategies aiming to enhance the resilience of forest ecosystems in a changing climate.展开更多
It is said that there is nothing more important than family, but as the vicissitudes of modern life impose new opportunities and strictures, so too do the solutions. The two-child bombshell still has folks reeling wit...It is said that there is nothing more important than family, but as the vicissitudes of modern life impose new opportunities and strictures, so too do the solutions. The two-child bombshell still has folks reeling with the possibilities, and families are now pressed with a very important question: should we? Similarly, tradition has fallen to pragmatism with the rise of the househusband in China. But, there are also those often left out of the family debate: the elderly, as China faces grave questions about its aging population.展开更多
Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinic...Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinical specimens including skin blister fluid,oropharyngeal and nasopharyngeal swabs,and blood were collected and inoculated onto Vero cells.The isolated virus was identified as MPXV using quantitative polymerase chain reaction(qPCR),cytopathic effects(CPEs),immunofluorescence assay(IFA)and transmission electron microscopy(TEM).Plaque assays were employed to quantify infectious plaque-forming units(PFUs).The plaque reduction neutralization test(PRNT)was developed to determine the neutralizing antibody(nAb)against MPXV.Results:MPXV replication was confirmed with qPCR.Typical CPEs were observed 48 h postincubation.The isolated virus was named MPXV-B.1-China-C-Tan-CQ01.IFA showed that MPXV reacted with serum of MPX case.Orthopoxvirus morphology was observed using TEM.The virus titer increased to>106 PFU/mL after three passages.The serum PRNT 50%neutralization titer(NT50)was 35 for the MPX patient 6 days after symptom onset.Discussion:The study successfully isolated the first MPXV strain in the mainland of China,MPXV-B.1-China-C-Tan-CQ01.Infectious titration and PRNT methods have been developed.The study provides key resources and technical platforms for further research as well as anti-viral drug and vaccine development against MPX.展开更多
What is already known about this topic?Echinococcosis exhibits a global distribution.In China,the primary endemic area is the northwest region.In December 2023,we documented a case of echinococcosis in an individual l...What is already known about this topic?Echinococcosis exhibits a global distribution.In China,the primary endemic area is the northwest region.In December 2023,we documented a case of echinococcosis in an individual lacking any travel or residential history in endemic regions.What is added by this report?This is the first laboratory-confirmed case of hepatic echinococcosis reported in Guangdong Province,associated with the G7 genotype of Echinococcus granulosus(E.granulosus).The most probable mode of transmission is a local infection resulting from E.granulosus introduced from endemic regions.What are the implications for public health practice?As the circulation of agricultural products increases,it is essential to enhance the quarantine and management of livestock from epidemic areas to prevent and control the spread of echinococcosis to non-epidemic regions.展开更多
"A total of 37 graycranes and one white-napedcrane have been confirmed atthe spot after careful observation!"Recently,Yan Jun,president of the Wuhan Birdwatching Association,took the first photo of thewhite-..."A total of 37 graycranes and one white-napedcrane have been confirmed atthe spot after careful observation!"Recently,Yan Jun,president of the Wuhan Birdwatching Association,took the first photo of thewhite-naped crane,anational key protected bird,in the Dongxihu lake area,while carrying out observation and research of migratory birds.展开更多
文摘There is an amazing healing power in the novel The Country of the Pointed Firs embodied in nature and the local people. Reading this novel, everyone can be the narrator who has experienced a journey of healing in Dunnet Landing during her interactions with the coastal natural sceneries and the lovely local residents in that in those small islands.
基金the INRAE sweet cherry breeding program,which is supported by INRAE BAP division and by INRAE’s private partner,CEP Innovation.
文摘Rain-induced fruit cracking is a major problem in sweet cherry cultivation.Basic research has been conducted to disentangle the physiological and mechanistic bases of this complex phenomenon,whereas genetic studies have lagged behind.The objective of this work was to disentangle the genetic determinism of rain-induced fruit cracking.We hypothesized that a large genetic variation would be revealed,by visual field observations conducted on mapping populations derived from well-contrasted cultivars for cracking tolerance.Three populations were evaluated over 7–8 years by estimating the proportion of cracked fruits for each genotype at maturity,at three different areas of the sweet cherry fruit:pistillar end,stem end,and fruit side.An original approach was adopted to integrate,within simple linear models,covariates potentially related to cracking,such as rainfall accumulation before harvest,fruit weight,and firmness.We found the first stable quantitative trait loci(QTLs)for cherry fruit cracking,explaining percentages of phenotypic variance above 20%,for each of these three types of cracking tolerance,in different linkage groups,confirming the high complexity of this trait.For these and other QTLs,further analyses suggested the existence of at least two-linked QTLs in each linkage group,some of which showed confidence intervals close to 5 cM.These promising results open the possibility of developing marker-assisted selection strategies to select cracking-tolerant sweet cherry cultivars.Further studies are needed to confirm the stability of the reported QTLs over different genetic backgrounds and environments and to narrow down the QTL confidence intervals,allowing the exploration of underlying candidate genes.
基金funded by the Fujian Province Science and Technology Research funding for the Tree Breeding Program of Chinese fir(Min Lin 2009-4 and Min Lin Ke2013-1)Twelfth Five Year Plan in areas like national science and technology plan project(2012BAD01B0201)the Innovative Research Team of the Educational Department of China and the Innovative Research Team of the Universities of Jiangsu Province
文摘Tree growth traits （tree height, DBH and stem volume） and survival from two 9-year-old, open-pollinated progeny tests of Chinese fir were investigated for heri- tability, genotype × environment interaction, age-age genetic correlation and selection efficiency. The 97 and 79 families planted at two sites were collected from the thirdcycle seed orchard. Individual heritability was estimated between 0.05 and 0.21 for tree height, DBH, and volume and between 0.45 and 1.0 for survival. Family heritability was between 0.20 and 1.14. Significant genotype x envi- ronment interaction was observed for the three growth traits. Type B genetic correlation was between 0.41 and 0.67 with an increasing trend as tree grows. High age-age genetic correlation was observed with correlation reaching 0.9 after age 4 for height, DBH, and volume. The genetic gains were estimated at 3.26, 3.39 and 5.98 % for tree height, DBH, and volume with 10 % selection intensity. The implication for advanced tree breeding in Chinese fir is discussed.
文摘On July 11,2022,the firast youth editorial committee meeting of Naihuo Cailiao(Refractoriea,in Chinese,bi monthly)and China's Refractories(in English,quarterly)was held in Changsha,China.The first youth editorial com mittee includes 47 members,who come from China Iron&Steel Research Institute Group,Henan University of Sci ence and Technology,Hunan University,Institute of Metal Research of Chinese Academy of Sciences,Jiangsu Jingxin New Materials Co.,Ltd,Kemeos(China)Aluminate Technologies Co.,Ltd,Luoyang Institute of Science and Technology,Northeastem University,RHI Magnesita,Shanghai University,Sinosteel Luonai Materials Technology Corporation,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd,Tianjin University,University of Science and Technology Beijing,Wuhan University of Science and Technology,Wuhan University of Technology.Xian Uni versity of Architecture and Technology.Zhejiang University,and Zhengzhou University.
文摘The lander carrying China’s first Mars rover has touched down on the red planet,the China National Space Administration(CNSA)confirmed on the morning of May 15.It is the first time China has landed a probe on a planet other than Earth.“The Mars exploration mission has been a total success,”Zhang Kejian,head of the CNSA,announced at the Beijing Aerospace Control Center.“It’s another important milestone for China’s space exploration。”
基金the University of Milan for funding the“ProForesta”project through the 2020 Research Support Planthe“Ente Parco Nazionale dell'Appennino Tosco-Emiliano”for having financed the project“First urgent measures to promote the adaptation of the silver fir forests of the Tuscan-Emilian Apennine National Park to the effects of climate change”。
文摘Understanding how genetic variation within forest species influences growth responses under climate change is essential for improving the accuracy of forest models and guiding adaptive management strategies.This study models the dynamics of Italian silver fir(Abies alba)forests under varying climate change scenarios using the forest gap model FORMIND.Focusing on three distinct silver fir provenances(Western Alps,Northern Apennines,and Southern Apennines),the study simulates forest growth in the Tuscan-Emilian Apennine National Park under different representative concentration pathways(RCPs).The individual-based model FORMIND was parameterized and validated with field data for each of the provenances,demonstrating its ability to accurately reproduce key forest metrics and dynamics.Our results reveal significant differences in expected growth patterns,productivity,metabolism,and carbon storage capacity among the silver fir provenances in pure and mixed stands.In the simulations,the Northern Apennines provenance showed higher biomass production(biomass>10%±1%)and carbon uptake(net primary productivity,NPP>8%±1%)at the end of the century compared to the Western Alps provenance in the pure provenance(PP)and no regeneration scenario.Conversely,the Southern Apennines provenance showed higher biomass(biomass>5%–10%)and NPP(>15%–18%)in mixed provenance(MP)and regeneration scenarios.These results show that genetic diversity strongly affects forest growth and resilience to environmental changes.Hence,it should be included as a predictor variable in forest models.The study also demonstrates the resilience of silver fir to climatic stressors,emphasizing its potential as a robust species in multiple forest contexts.The integration of forest provenance data into the FORMIND model represents a significant advancement in forest modelling,enabling more accurate and reliable predictions under climate change scenarios.The study's findings advocate for a greater understanding and consideration of genetic diversity in forest management and conservation strategies,in support of assisted migration strategies aiming to enhance the resilience of forest ecosystems in a changing climate.
文摘It is said that there is nothing more important than family, but as the vicissitudes of modern life impose new opportunities and strictures, so too do the solutions. The two-child bombshell still has folks reeling with the possibilities, and families are now pressed with a very important question: should we? Similarly, tradition has fallen to pragmatism with the rise of the househusband in China. But, there are also those often left out of the family debate: the elderly, as China faces grave questions about its aging population.
基金Supported by the National Key Research and Development Program of China(2022YFC 2304100,2022YFC2303401,2021YFA1201003,2016YFD0500301,2020YFC0840900,2021YFC 0863300)the Beijing Science and Technology Plan(Z211100002521017,Z211100002521015).
文摘Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinical specimens including skin blister fluid,oropharyngeal and nasopharyngeal swabs,and blood were collected and inoculated onto Vero cells.The isolated virus was identified as MPXV using quantitative polymerase chain reaction(qPCR),cytopathic effects(CPEs),immunofluorescence assay(IFA)and transmission electron microscopy(TEM).Plaque assays were employed to quantify infectious plaque-forming units(PFUs).The plaque reduction neutralization test(PRNT)was developed to determine the neutralizing antibody(nAb)against MPXV.Results:MPXV replication was confirmed with qPCR.Typical CPEs were observed 48 h postincubation.The isolated virus was named MPXV-B.1-China-C-Tan-CQ01.IFA showed that MPXV reacted with serum of MPX case.Orthopoxvirus morphology was observed using TEM.The virus titer increased to>106 PFU/mL after three passages.The serum PRNT 50%neutralization titer(NT50)was 35 for the MPX patient 6 days after symptom onset.Discussion:The study successfully isolated the first MPXV strain in the mainland of China,MPXV-B.1-China-C-Tan-CQ01.Infectious titration and PRNT methods have been developed.The study provides key resources and technical platforms for further research as well as anti-viral drug and vaccine development against MPX.
基金Supported by the Key Laboratory of Emergency Detection Technology for Emerging Infectious Diseases in Guangdong Province,approval number 2023B112010010(2023).
文摘What is already known about this topic?Echinococcosis exhibits a global distribution.In China,the primary endemic area is the northwest region.In December 2023,we documented a case of echinococcosis in an individual lacking any travel or residential history in endemic regions.What is added by this report?This is the first laboratory-confirmed case of hepatic echinococcosis reported in Guangdong Province,associated with the G7 genotype of Echinococcus granulosus(E.granulosus).The most probable mode of transmission is a local infection resulting from E.granulosus introduced from endemic regions.What are the implications for public health practice?As the circulation of agricultural products increases,it is essential to enhance the quarantine and management of livestock from epidemic areas to prevent and control the spread of echinococcosis to non-epidemic regions.
文摘"A total of 37 graycranes and one white-napedcrane have been confirmed atthe spot after careful observation!"Recently,Yan Jun,president of the Wuhan Birdwatching Association,took the first photo of thewhite-naped crane,anational key protected bird,in the Dongxihu lake area,while carrying out observation and research of migratory birds.
