The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GR...The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GRES power plant (RGpp) emission during ontogenesis in connection with the level of technogenic pollution. It was detected that in the impact area, smoke emissions from the RGpp in the south-west direction zones of technogenic pollution were formed. Those vary in qualitative composition of the snow pack pollutants and their quantitative characteristics. The content of water insoluble compounds in melt snow water and the compile suspended matter, decreases regularly at the longer distance from the source of air pollutants. The highest content of water soluble compounds in the melt snow water was indicated at the distances of 5, 8 and 14 km from the source of air pollutants, authentically lower in the nearest and farthest sampling points of the snow trials. Scots pine (Pinus sylvestris) pollen significative with high prognostic value in relation to the level of toxic load upon the eco-systems and the condition of male generative system were discovered. It was detected that the significative meanings of pollen with morphological abnormalities decreased, and the meanings of functional significatives increased at the longer distance from the source of air pollutants. Pollen fertility, pollen tube length and reserve substances content significative is negatively related to the presence of micro and macro elements in the snow water;those identify the toxic load level on the ecosystem probably to the highest degree. Pine male gametophyte elimination, while forming in the impact zone of the GRES power plant, takes place at the stage of pollen grain germination as well as pollen tubes’ growth stage.展开更多
文章介绍GRE、IPSec和无线网络的相关技术理论,对“一校多区”的无线校园网络提出了一个基于GRE over IPSec VPN实现AP上线统一管理方案,并通过HCL模拟软件进行实验仿真。实验结果表明,该方案可以跨区域安全稳定传输私网数据,实现AP上...文章介绍GRE、IPSec和无线网络的相关技术理论,对“一校多区”的无线校园网络提出了一个基于GRE over IPSec VPN实现AP上线统一管理方案,并通过HCL模拟软件进行实验仿真。实验结果表明,该方案可以跨区域安全稳定传输私网数据,实现AP上线统一管理,无线业务运行正常。方案在一定程度上避免设备重复投资,节约了成本,提高了管理效率。实验涉及OSPF、GRE over IPSec VPN和无线相关配置等,通过具体步骤和配置助力校园网无线网络管理,为实际网络的建设提供有效参考和依据。展开更多
This work aims to develop fast T_(1)mapping methods for preclinical and clinical scanners based on subspace-constrained reconstructions.Two sequences are explored for rapid T_(1)characterizations:1)Interleaved spatiot...This work aims to develop fast T_(1)mapping methods for preclinical and clinical scanners based on subspace-constrained reconstructions.Two sequences are explored for rapid T_(1)characterizations:1)Interleaved spatiotemporal encoding incorporating variable repetition times.2)Inversion recovery gradient echo with random sampling of the phaseencoding(PE)dimension.For both sequences,the subspace reconstruction of the signal recovery was applied,to jointly reconstruct the down-sampled images while characterizing the T_(1)relaxation.In vivo scans on human brains and abdomens confirmed the efficiency of the proposed methods,including compatibility with breath-holding.In addition,Scans on animals with abdominal tumors and dynamic contrast-enhanced T_(1)mapping on kidneys support the applicability of the proposed methods also in preclinical settings.展开更多
本文根据新东方某分中心GRE学员数据,针对学员GRE语文部分出分情况及该学员的托福(TOEFL)/雅思(IELTS)考试阅读分数进行定量分析。同时本文给出部分统计方法,对比托福考生及雅思考生在GRE语文考试中的分数呈现,探讨托雅考试阅读分数与GR...本文根据新东方某分中心GRE学员数据,针对学员GRE语文部分出分情况及该学员的托福(TOEFL)/雅思(IELTS)考试阅读分数进行定量分析。同时本文给出部分统计方法,对比托福考生及雅思考生在GRE语文考试中的分数呈现,探讨托雅考试阅读分数与GRE语文分数之间的相关关系,并对托福、雅思考生未来对于GRE备考的影响做了探究。This study, using data from one of the centers in New Oriental, focuses on a quantitative analysis of students’ GRE verbal scores, as well as their TOEFL/IELTS reading scores. In the meantime, the study presents several statistical methods to compare the GRE verbal performance of TOEFL test-takers and IELTS test-takers, exploring the correlation between these tests, and investigating the implications for future GRE preparation for both TOEFL and IELTS students.展开更多
It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lin...It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lines. The tunneling technique is the key technique to implement VPN. In this paper, with the VPN implementation requirements in mind, we perform a comparative research on the existing tunneling protocols including GRE, L2TP, IPSec and IP/IP. We also propose an integrated scheme of tunneling mechanism that supports VPN under the current condition.展开更多
文摘The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GRES power plant (RGpp) emission during ontogenesis in connection with the level of technogenic pollution. It was detected that in the impact area, smoke emissions from the RGpp in the south-west direction zones of technogenic pollution were formed. Those vary in qualitative composition of the snow pack pollutants and their quantitative characteristics. The content of water insoluble compounds in melt snow water and the compile suspended matter, decreases regularly at the longer distance from the source of air pollutants. The highest content of water soluble compounds in the melt snow water was indicated at the distances of 5, 8 and 14 km from the source of air pollutants, authentically lower in the nearest and farthest sampling points of the snow trials. Scots pine (Pinus sylvestris) pollen significative with high prognostic value in relation to the level of toxic load upon the eco-systems and the condition of male generative system were discovered. It was detected that the significative meanings of pollen with morphological abnormalities decreased, and the meanings of functional significatives increased at the longer distance from the source of air pollutants. Pollen fertility, pollen tube length and reserve substances content significative is negatively related to the presence of micro and macro elements in the snow water;those identify the toxic load level on the ecosystem probably to the highest degree. Pine male gametophyte elimination, while forming in the impact zone of the GRES power plant, takes place at the stage of pollen grain germination as well as pollen tubes’ growth stage.
文摘文章介绍GRE、IPSec和无线网络的相关技术理论,对“一校多区”的无线校园网络提出了一个基于GRE over IPSec VPN实现AP上线统一管理方案,并通过HCL模拟软件进行实验仿真。实验结果表明,该方案可以跨区域安全稳定传输私网数据,实现AP上线统一管理,无线业务运行正常。方案在一定程度上避免设备重复投资,节约了成本,提高了管理效率。实验涉及OSPF、GRE over IPSec VPN和无线相关配置等,通过具体步骤和配置助力校园网无线网络管理,为实际网络的建设提供有效参考和依据。
基金funded by the Israel Science Foundation(grants 3594/21 and 1874/22)the Clore Institute for High Field Magnetic Resonance Imaging and Spectroscopy and by the Azrieli Institute for Brain Imaging(Weizmann Institute),by China Scholarship Council(CSC)grant 201806310085+2 种基金the National Key Research and Development Program grant 2023YFE0113300the Magnetic Resonance Technology Alliance of the Chinese Academy of Sciences Scientific Research Instrument and Equipment Development Project grant 2021GZL001the Israel Cancer Research Foundation and by Israel's Planning and Budget Committee(Lingceng Ma,international student fellowship).
文摘This work aims to develop fast T_(1)mapping methods for preclinical and clinical scanners based on subspace-constrained reconstructions.Two sequences are explored for rapid T_(1)characterizations:1)Interleaved spatiotemporal encoding incorporating variable repetition times.2)Inversion recovery gradient echo with random sampling of the phaseencoding(PE)dimension.For both sequences,the subspace reconstruction of the signal recovery was applied,to jointly reconstruct the down-sampled images while characterizing the T_(1)relaxation.In vivo scans on human brains and abdomens confirmed the efficiency of the proposed methods,including compatibility with breath-holding.In addition,Scans on animals with abdominal tumors and dynamic contrast-enhanced T_(1)mapping on kidneys support the applicability of the proposed methods also in preclinical settings.
文摘本文根据新东方某分中心GRE学员数据,针对学员GRE语文部分出分情况及该学员的托福(TOEFL)/雅思(IELTS)考试阅读分数进行定量分析。同时本文给出部分统计方法,对比托福考生及雅思考生在GRE语文考试中的分数呈现,探讨托雅考试阅读分数与GRE语文分数之间的相关关系,并对托福、雅思考生未来对于GRE备考的影响做了探究。This study, using data from one of the centers in New Oriental, focuses on a quantitative analysis of students’ GRE verbal scores, as well as their TOEFL/IELTS reading scores. In the meantime, the study presents several statistical methods to compare the GRE verbal performance of TOEFL test-takers and IELTS test-takers, exploring the correlation between these tests, and investigating the implications for future GRE preparation for both TOEFL and IELTS students.
文摘It is a trend of virtual private networks (VPNs) to be used for information exchange between enterprises, branches of enterprises and enterprises and their employees instead of traditional dial networks and leased lines. The tunneling technique is the key technique to implement VPN. In this paper, with the VPN implementation requirements in mind, we perform a comparative research on the existing tunneling protocols including GRE, L2TP, IPSec and IP/IP. We also propose an integrated scheme of tunneling mechanism that supports VPN under the current condition.
