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Plant Communications 2024年第4期5卷 137-140页

作者： Jiezheng Ying Yaobing Qin Fengyong Zhang liu duan Peng Cheng Man Yin Yifeng Wang Xiaohong Tong Jie Huang Zhiyong Li Xianjun Song Jian Zhang State Key Lab of Rice Biology and Breeding China National Rice Research InstituteHangzhou 311400China State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhan 430062China Key Laboratory of Plant Molecular Physiology Institute of Botanythe Chinese Academy of SciencesBeijing 100093China These authors contributed equally to this article

Dear Editors,Heterosis utilization is an effective way to improve crop *** rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian countries since the 1980s(Cheng et al.,2007).To produce rice F1 hybrid seeds(HSDs),male sterile lines(MSLs)are grown side by side with restorer lines(RLs)in order to receive the RL *** seed production system faces challenges in maintaining the seed purity of the HSDs owing to the physical proximity of MSL and RL plants in the ***,MSLs and RLs are planted in alternate rows to enable physical separation of seeds during harvesting.

关键词： planted sterile enable

山东省胶莱盆地东北缘前垂柳金矿床黄铁矿Rb-Sr等时线年龄

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中国地质 2024年第1期51卷 366-367页

作者：韩小梦段留安赵鹏飞王建田郭云成中国地质调查局烟台海岸带地质调查中心山东烟台264000

1研究目的(Objective)胶莱盆地东北缘是胶东东部重要的金矿集中区,大地构造位置位于华北板块和秦岭—大别—苏鲁造山带交汇部位(图1a),受控于区内北东向的郭城断裂、朱吴—崖子左行走滑断裂构造及其形成的拉分盆地边缘的铲式滑脱构造系... 详细信息

1研究目的(Objective)胶莱盆地东北缘是胶东东部重要的金矿集中区,大地构造位置位于华北板块和秦岭—大别—苏鲁造山带交汇部位(图1a),受控于区内北东向的郭城断裂、朱吴—崖子左行走滑断裂构造及其形成的拉分盆地边缘的铲式滑脱构造系统控制(图1b),累计探获金资源量超过200 t。前垂柳矿区位于胶莱盆地东北缘中北部,介于辽上金矿和西涝口金矿之间,依据“近东西向构造控矿”找矿思路,经3年的勘查工作,累计提交金推断资源量20.5 t,为近年来该区新发现的金矿床。与区域上辽上、西涝口、郭城等金矿床相比,前垂柳金矿的研究程度尚低,尤其是成矿年龄还不确定,本研究旨在通过含矿黄铁矿Rb-Sr定年,精确厘定该矿床的成矿时代,为深入研究该区成矿作用提供可靠的年代学依据。

关键词：胶莱盆地东北缘构造控矿拉分盆地滑脱构造金矿床胶东东部金矿集中区资源量

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分组密码FBC的截断差分分析

密码学报（中英文） 2024年第3期11卷 602-620页

作者：邹光南刘端贾珂婷张国艳清华大学计算机科学与技术系北京100084 山东大学网络空间安全学院青岛266237 清华大学网络科学与网络空间研究院北京100084 中关村实验室北京100194 密码技术与信息安全教育部重点实验室青岛266237 山东区块链研究院济南250101

为了促进密码算法的设计和实现,中国密码学会(CACR)于2018年举办全国密码算法设计竞赛,其中FBC算法是晋级到第二轮的十个算法之一.FBC有三个版本,即FBC128-128、FBC128-256和FBC256-256,分别能够支持128比特和256比特长度的明文和密钥.... 详细信息

为了促进密码算法的设计和实现,中国密码学会(CACR)于2018年举办全国密码算法设计竞赛,其中FBC算法是晋级到第二轮的十个算法之一.FBC有三个版本,即FBC128-128、FBC128-256和FBC256-256,分别能够支持128比特和256比特长度的明文和密钥.FBC算法采用4路两重Feistel结构设计,便于硬件实现.本文利用中间相遇的截断差分构造方法,针对FBC加密算法,为FBC-128算法构造了11轮概率为2^(-108)的截断差分路线,基于该区分器,对FBC-128算法第一次给出15轮密钥恢复攻击,其中攻击的数据复杂度为2^(99)选择密文,时间复杂度是2^(100)次15轮加密,比已有的分析结果提高了3轮.对于256比特分组长度的FBC-256算法构造了15轮概率为2^(-236)的截断差分路线,基于该区分器,对FBC-256算法给出了20轮密钥恢复攻击,攻击的数据复杂度为2^(227)选择密文量,时间复杂度是2^(222.6)次20轮加密.

关键词：分组密码 FBC 截断差分密码分析

X-ray afterglow of GRB 050712: multiple energy injections into the external shock

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Research in Astronomy and Astrophysics 2014年第5期14卷 610-616页

作者： Liang-duan liu A-Ming Chen Institute of Astrophysics Central China Normal University School of Astronomy and Space Science Nanjing University

As indicated by observed X-ray flares, a great amount of energy can be in- termittently released from the postburst central engine of gamma-ray bursts （GRBs）. As a natural consequence, the GRB＇s external shock could be repeatedly energized. With such a multiple energy injection model, we explore the unique X-ray afterglow light curve of GRB 050712, which exhibits four shallow decay plateaus. Together with three early X-ray flares, the celatral engine of GRB 050712 is believed to have released energy at least seven times after the burst. Furthermore, we find that the ener- gies released during the four plateaus are all on the same order of magnitude, but the luminosity significantly decreased with time. These results may provide some inter- esting implications for the GRB central engine.

关键词： gamma rays: bursts -- individual: GRB 050712

Geological and Geochemical Constraints on the Newly Discovered Yangchongli Gold Deposit in Tongling Region, Lower Yangtze Metallogenic Belt

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Acta Geologica Sinica(English Edition) 2017年第6期91卷 2078-2108页

作者： duan liu'an GU Huangling YANG Xiaoyong CAS Key Laboratory of Crust-Mantle Materials and Environments University of Science and Technology of China Institute of Geology and Geophysics Chinese Academy of Sciences No.7 Gold Geological Party of CAPF School of City and Environment Hunan University of Technology

The newly discovered Yangchongli gold deposit is a unique independent gold deposit in the Tongling ore-cluster region controlled by the tectonic alteration firstly discovered in the Lower Yangtze Metallogenic Belt （LYMB）. The host magmatic rocks mainly consist of monzodiorite and K-feldspar granite. The LA-ICP-MS U-Pb zircons dating yielded weighted mean 206pb/23SU ages of 140.7 ± 1.8 Ma and 126.4 ±1.2 Ma for the monzodiorite and K-feldspar granite, respectively. Monzodiorites are enriched in Sr, Ba, Rb, and depleted in Y, Yb with high Sr/Y and La/Yb ratios, similar to the geochemical features of adakite, considered as products of differentiation of mafic magmas originating from lithospheric mantle melt/fluids caused by metasomatism during paleo-Pacific Plate subduction in the Mesozic. In contrast, the compositions of K-feldspar granites are A-type granites, indicating an extensional tectonic background. Gold ores hosted in the fracture zone occurred as quartz vein within cataclastic rock. Sulfur and lead isotopes from pyrites show crust-mantle mixing characteristics. Metal components from strata also took part in the gold mineralization, and resulted from two episodes of magmatism that were probably related to tectonic transition from a compressive to an extensional setting between 140-126 Ma, which led to the Mesozoic large-scale polymetallic mineralization events in eastern China.

关键词： monzodiorites A-type granites U-Pb chronology Yangchongli gold deposits Tongling region Lower Yangtze Metallogenic Belt

Rare occurrence of simultaneous coronary artery perforation and intracoronary thrombus formation following angioplasty

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Journal of Geriatric Cardiology 2013年第2期10卷 198-201页

作者： Su-Yan Bian liu-Fa duan The Second Department of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China

Both coronary artery perforation and intracoronary thrombus formation are life-threatening complications of percutaneous coronary interventions, which rarely occur simultaneously during *** herein report a case of stent-related, left circumflex artery perforation, and subsequently acute left main artery thrombosis after the leakage was embolized with 7 microcoils. Intracoronary thromboectomy and systemic anticoagulant therapy were carefully used with good results. This case also represents some of our uncertainties regarding the best management of the patient.

关键词： Cardiac tamponade Coronary vessels Percutaneous coronary interventions Perforation Thrombosis

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分组密码FBC的差分分析

中国科学：信息科学 2024年第2期54卷 335-353页

作者：刘端罗毅博贾珂婷张国艳邹光南尤启迪陈颖山东大学网络空间安全学院青岛266237 中国科学技术大学网络空间安全学院合肥230022 清华大学网络科学与网络空间研究院北京100084 中关村实验室北京100095 密码技术与信息安全教育部重点实验室青岛266237 山东区块链研究院济南250101 北京卫星信息工程研究所天地一体化信息技术国家重点实验室北京100086 清华大学计算机系北京100084 北京电子科技学院密码科学与技术系北京100070

FBC是一种轻量级分组密码算法,由于结构简单、软硬件实现灵活等优点成为2018年中国密码学会(CACR)举办的全国密码算法设计竞赛中晋级到第2轮的10个算法之一.FBC密码包含3个版本支持128和256两种比特长度的明文分组以及128和256两种比特... 详细信息

FBC是一种轻量级分组密码算法,由于结构简单、软硬件实现灵活等优点成为2018年中国密码学会(CACR)举办的全国密码算法设计竞赛中晋级到第2轮的10个算法之一.FBC密码包含3个版本支持128和256两种比特长度的明文分组以及128和256两种比特长度的密钥,本文主要对分组长度128位的两个版本进行分析.我们基于SAT(Boolean satisfiability problem)模型对FBC的差分特征进行自动化搜索,得到了新的14轮差分路线,概率为2^(-102.25).基于此路线我们给出了18轮FBC128-128和20轮FBC128-256差分分析,并且在分析过程中给出了复杂度估计.对于18轮FBC128-128差分分析,时间复杂度和存储复杂度分别为2^(101.5)和2^(52).对于20轮FBC128-256差分分析时间复杂度和存储复杂度分别为2^(184)和2^(96).

关键词：分组密码差分分析 FBC算法布尔可满足性问题

Anomalous Optical and Electronic Properties of CaTiO3 Perovskites

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Communications in Theoretical Physics 2007年第3X期48卷 563-570页

作者： liu Hui-Ping duan Yi-Feng YI Lin Department of Physics and State Key Laboratory of Laser Technology Huazhong University of Science and TechnologyWuhan 430074 China

With the help of the first-prlnciples full potential linearized augmented plane wave method, absorption coefficients, reflect/vity, dielectric behavior and electronic properties, including electronic energy bands, density of states and charge density distributions, are studied for the tetragonal and cubic CaTiO3. By considering the thermal expansion effects, an approximate method is proposed for the study of the stability of ground state and a tendency of phase transition, based on the minimum free energy principle. Subsequently, numerical calculations are carried out by using the first-principles perturbation method. We demonstrate that the high-temperature phase is cubic. It is shown that optical spectra in tetragonal phase exhibit single-peak feature and differ from multi-peak character in cubic. We find that strong orbital hybridization results in the co-valent bonds between Ti 3d and O 2p electrons and forms two-type dipoles （Ti-Ol and Ti-02） in tetragonal, while the Ti-O dipoles are identical in cubic. It is argued that crystal structure determines the dipole distributions and leads to some electron states among which the dipole-dipole transit/on forbidden is a key, causing such anomalous optical phenomena with the insulator characteristics. The predicted charge density distribution and the tendency of phase transition from tetragonal to cubic are in good agreement with experimental observations.

关键词： first-principles calculations CaTiO3 perovskites optical and electronic properties

萸连丸对DSS诱导结肠炎小鼠Th17/Treg平衡的调控机制

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时珍国医国药 2024年第4期35卷 835-839页

作者：袁望圆刘璐万琪刘端勇葛巍王海燕江西中医药大学江西南昌330004 江西中医药大学附属医院江西南昌330006

目的探讨萸连丸对葡聚糖硫酸钠(DSS)诱导的溃疡性结肠炎(UC)疗效和Treg/Th17平衡的调控机制。方法将BALB/c雄性小鼠随机分为正常组、模型组、萸连丸组和美沙拉嗪给药组,每组10只。除正常组外,其余各组采用“2.5%DSS(第1~7天)——自由饮... 详细信息

目的探讨萸连丸对葡聚糖硫酸钠(DSS)诱导的溃疡性结肠炎(UC)疗效和Treg/Th17平衡的调控机制。方法将BALB/c雄性小鼠随机分为正常组、模型组、萸连丸组和美沙拉嗪给药组,每组10只。除正常组外,其余各组采用“2.5%DSS(第1~7天)——自由饮水(第8~14天)——2.5%DSS(第15~21天)”方法复制慢性复发性结肠炎。同时造模第8天开始予以萸连丸、美沙拉嗪肠溶片连续灌胃14d。造模第22天观察小鼠部分形态指标,采用流式细胞术测定结肠组织中CD4+Foxp3+、CD4+IL17A+细胞水平,采用蛋白印迹法检测结肠组织中检测低氧诱导因子(HIF-1a)、驱动蛋白家族成员2A(KIF2A)、BCL-2同源结构域蛋白NOXA、蛋白磷酸酶2a(PP2A)表达水平。结果与模型组相比,萸连丸组小鼠体质量明显增加,结肠长度明显增加,肠重指数明显降低;病理提示结肠组织中少量炎性细胞浸润,溃疡基本修复;结肠组织中CD4+IL17A+细胞水平显著下降,CD4+Foxp3+细胞水平显著升高;结肠组织中HIF-1a、PP2A表达水平显著降低,KIF2A表达水平显著升高。结论萸连丸可通过Th17/Treg细胞平衡而有效治疗DSS诱导小鼠慢性复发性结肠炎,其作用机制涉及HIF-1a、PP2A表达水平降低和KIF2A表达水平升高。

关键词：萸连丸溃疡性结肠炎 Th17/Treg 转录因子调控机制

NUMERICAL INVESTIGATION ON NON-NEWTONIAN FLOWS THROUGH DOUBLE CONSTRICTIONS BY AN UNSTRUCTURED FINITE VOLUME METHOD

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Journal of Hydrodynamics 2009年第5期21卷 622-632页

作者： GAO Wei liu Ru-xun duan Ya-li Department of Mathematics University of Science and Technology of China Hefei 230026 China

This article presents a numerical investigation on a steady non-Newtonian flow through a two-dimensional channel with double constrictions. The power-law mode is employed in describing the non-Newtonian behavior of the flow. An unstructured finite volume method combined with a fractional-step projection method is developed for the discretization of incompressible equations governing the non-Newtonian flows. The important flow dynamics related with the arterial diseases, such as the wall shear stress and vortex generation, are also numerically studied in detail. Numerical results reveal that there are marked differences between Newtonian and non-Newtonian models.

关键词： double constrictions power-law fluid finite volume method unstructured grids