The long-term earthquake prediction from 2021 to 2030 is carried out by researching the active tectonic block boundary zones in the Chinese mainland.Based on the strong earthquake recurrence model,the cumulative proba...The long-term earthquake prediction from 2021 to 2030 is carried out by researching the active tectonic block boundary zones in the Chinese mainland.Based on the strong earthquake recurrence model,the cumulative probability of each target fault in the next 10 years is given by the recurrence period and elapsed time of each fault,which are adopted from relevant studies such as seismological geology,geodesy,and historical earthquake records.Based on the long-term predictions of large earthquakes throughout the world,this paper proposes a comprehensive judgment scheme based on the fault segments with the seismic gap,motion strongly locked,sparse small-moderate earthquakes,and apparent Coulomb stress increase.This paper presents a comprehensive analysis of the relative risk for strong earthquakes that may occur in the coming 10 years on the major faults in the active tectonic block boundary zones in the Chinese mainland.The present loading rate of each fault is first constrained by geodetic observations;the cumulative displacement of each fault is then estimated by the elapsed time since the most recent strong earthquake.展开更多
An ancient hexaploidization event in the most but not all Asteraceae plants,may have been responsible for shaping the genomes of many horticultural,ornamental,and medicinal plants that promoting the prosperity of the ...An ancient hexaploidization event in the most but not all Asteraceae plants,may have been responsible for shaping the genomes of many horticultural,ornamental,and medicinal plants that promoting the prosperity of the largest angiosperm family on the earth.However,the duplication process of this hexaploidy,as well as the genomic and phenotypic diversity of extant Asteraceae plants caused by paleogenome reorganization,are still poorly understood.We analyzed 11 genomes from 10 genera in Asteraceae,and redated the Asteraceae common hexaploidization(ACH)event∼70.7–78.6 million years ago(Mya)and the Asteroideae specific tetraploidization(AST)event∼41.6–46.2 Mya.Moreover,we identified the genomic homologies generated from the ACH,AST and speciation events,and constructed a multiple genome alignment framework for Asteraceae.Subsequently,we revealed biased fractionations between the paleopolyploidization produced subgenomes,suggesting the ACH and AST both are allopolyplodization events.Interestingly,the paleochromosome reshuffling traces provided clear evidence for the two-step duplications of ACH event in Asteraceae.Furthermore,we reconstructed ancestral Asteraceae karyotype(AAK)that has 9 paleochromosomes,and revealed a highly flexible reshuffling of Asteraceae paleogenome.Of specific significance,we explored the genetic diversity of Heat Shock Transcription Factors(Hsfs)associated with recursive whole-genome polyploidizations,gene duplications,and paleogenome reshuffling,and revealed that the expansion of Hsfs gene families enable heat shock plasticity during the genome evolution of Asteraceae.Our study provides insights on polyploidy and paleogenome remodeling for the successful establishment of Asteraceae,and is helpful for further communication and exploration of the diversification of plant families and phenotypes.展开更多
背景髋部骨折是老年患者致残、致死的主要原因之一。骨折后若发生下肢深静脉血栓可明显增加老年髋部骨折患者的住院时间和死亡率。目的探讨70岁以上老年髋部骨折患者术前发生下肢深静脉血栓的危险因素及麻醉特点。方法回顾性分析解放军...背景髋部骨折是老年患者致残、致死的主要原因之一。骨折后若发生下肢深静脉血栓可明显增加老年髋部骨折患者的住院时间和死亡率。目的探讨70岁以上老年髋部骨折患者术前发生下肢深静脉血栓的危险因素及麻醉特点。方法回顾性分析解放军总医院海南医院麻醉科2012年1月-2018年12月收治的258例70岁以上髋部骨折患者的临床资料。根据术前下肢静脉超声是否发生深静脉血栓分为深静脉血栓组和非深静脉血栓组。多因素分析术前发生深静脉血栓的危险因素,以及该类患者并存疾病和麻醉特点。结果本组15例(5.8%)患者术前发生深静脉血栓,其中3例放置下腔静脉滤器。152例(58.9%)患者术前ASA评级为Ⅲ~Ⅳ级;135例(52.3%)患者采取神经阻滞麻醉,48例(18.6%)患者采取全身麻醉;17例(6.6%)患者骨折后48 h内手术。深静脉血栓组与非深静脉血栓组术前贫血[12例(80.0%)vs 116例(48.5%)]、骨折到手术时间[14.0(7.3,31.8)d vs 9.0(6.0,11.0)d]差异均有统计学意义(P均<0.05);多因素logistic分析示术前贫血(OR:0.296;95%CI:0.075-1.170;P=0.083)和骨折到手术时间(OR:1.020;95%CI:0.997-1.044;P=0.094)不是术前发生深静脉血栓的独立危险因素。结论本研究尚未发现术前贫血和骨折到手术时间是高龄髋部骨折患者术前发生下肢深静脉血栓的独立危险因素。这类患者术前ASA评级高,基础疾病多,神经阻滞麻醉为其主要麻醉方式。展开更多
基金the National Key R&D Program of China(grants 2017YFC1500501).
文摘The long-term earthquake prediction from 2021 to 2030 is carried out by researching the active tectonic block boundary zones in the Chinese mainland.Based on the strong earthquake recurrence model,the cumulative probability of each target fault in the next 10 years is given by the recurrence period and elapsed time of each fault,which are adopted from relevant studies such as seismological geology,geodesy,and historical earthquake records.Based on the long-term predictions of large earthquakes throughout the world,this paper proposes a comprehensive judgment scheme based on the fault segments with the seismic gap,motion strongly locked,sparse small-moderate earthquakes,and apparent Coulomb stress increase.This paper presents a comprehensive analysis of the relative risk for strong earthquakes that may occur in the coming 10 years on the major faults in the active tectonic block boundary zones in the Chinese mainland.The present loading rate of each fault is first constrained by geodetic observations;the cumulative displacement of each fault is then estimated by the elapsed time since the most recent strong earthquake.
基金This work was funded by the National Natural Science Foundation of China(32170236 and 31501333 to J.P.W.)the Hebei Natural Science Foundation(C2020209064 to J.P.W.)the Fundamental Research for the Hebei Province Universities(JQN2020018 to T.L.).
文摘An ancient hexaploidization event in the most but not all Asteraceae plants,may have been responsible for shaping the genomes of many horticultural,ornamental,and medicinal plants that promoting the prosperity of the largest angiosperm family on the earth.However,the duplication process of this hexaploidy,as well as the genomic and phenotypic diversity of extant Asteraceae plants caused by paleogenome reorganization,are still poorly understood.We analyzed 11 genomes from 10 genera in Asteraceae,and redated the Asteraceae common hexaploidization(ACH)event∼70.7–78.6 million years ago(Mya)and the Asteroideae specific tetraploidization(AST)event∼41.6–46.2 Mya.Moreover,we identified the genomic homologies generated from the ACH,AST and speciation events,and constructed a multiple genome alignment framework for Asteraceae.Subsequently,we revealed biased fractionations between the paleopolyploidization produced subgenomes,suggesting the ACH and AST both are allopolyplodization events.Interestingly,the paleochromosome reshuffling traces provided clear evidence for the two-step duplications of ACH event in Asteraceae.Furthermore,we reconstructed ancestral Asteraceae karyotype(AAK)that has 9 paleochromosomes,and revealed a highly flexible reshuffling of Asteraceae paleogenome.Of specific significance,we explored the genetic diversity of Heat Shock Transcription Factors(Hsfs)associated with recursive whole-genome polyploidizations,gene duplications,and paleogenome reshuffling,and revealed that the expansion of Hsfs gene families enable heat shock plasticity during the genome evolution of Asteraceae.Our study provides insights on polyploidy and paleogenome remodeling for the successful establishment of Asteraceae,and is helpful for further communication and exploration of the diversification of plant families and phenotypes.
文摘背景髋部骨折是老年患者致残、致死的主要原因之一。骨折后若发生下肢深静脉血栓可明显增加老年髋部骨折患者的住院时间和死亡率。目的探讨70岁以上老年髋部骨折患者术前发生下肢深静脉血栓的危险因素及麻醉特点。方法回顾性分析解放军总医院海南医院麻醉科2012年1月-2018年12月收治的258例70岁以上髋部骨折患者的临床资料。根据术前下肢静脉超声是否发生深静脉血栓分为深静脉血栓组和非深静脉血栓组。多因素分析术前发生深静脉血栓的危险因素,以及该类患者并存疾病和麻醉特点。结果本组15例(5.8%)患者术前发生深静脉血栓,其中3例放置下腔静脉滤器。152例(58.9%)患者术前ASA评级为Ⅲ~Ⅳ级;135例(52.3%)患者采取神经阻滞麻醉,48例(18.6%)患者采取全身麻醉;17例(6.6%)患者骨折后48 h内手术。深静脉血栓组与非深静脉血栓组术前贫血[12例(80.0%)vs 116例(48.5%)]、骨折到手术时间[14.0(7.3,31.8)d vs 9.0(6.0,11.0)d]差异均有统计学意义(P均<0.05);多因素logistic分析示术前贫血(OR:0.296;95%CI:0.075-1.170;P=0.083)和骨折到手术时间(OR:1.020;95%CI:0.997-1.044;P=0.094)不是术前发生深静脉血栓的独立危险因素。结论本研究尚未发现术前贫血和骨折到手术时间是高龄髋部骨折患者术前发生下肢深静脉血栓的独立危险因素。这类患者术前ASA评级高,基础疾病多,神经阻滞麻醉为其主要麻醉方式。
