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The influence of the stray-light component in determining coronal temperature structures

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Science China(Physics,Mechanics & Astronomy) 2009年第11期52卷 1728-1736页

作者： HAO juan ZHANG mei Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China

We use a few solar partial eclipse observations made by XRT/Hinode to estimate the influence of stray-light component in determining coronal temperature structures. Our analysis shows that the stray light will largely affect the estimation of coronal temperature and change the estimated temperature structure in one coronal hole region. The stray lights mildly influence the estimated temperatures in one quiet Sun region and do not change the estimated temperature structure. This implies that the influence of stray lights differs from one region to another, and definitely needs to be considered in some regions. Whereas a carefully estimated point-spread-function is needed to remove the stray light component, our study shows that by a simple approach such as subtracting the average intensity of distant (e.g. >1.4 solar radius) points from the data values, the influence of stray light can be largely removed, at least for the two regions we study here.

关键词： Sun: Corona Sun: X-rays

bZIP17 regulates heat stress tolerance at reproductive stage in Arabidopsis

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aBIOTECH 2022年第1期3卷 1-11页

作者： juan Gao mei-ing Wang Jing-Jing Wang Hai-Ping lu Jian-Xiang Liu State Key Laboratory of Plant Physiology and Biochemistry College of Life SciencesZhejiang UniversityHangzhou 310027China

High temperature elicits a well-conserved response called the unfol ded protein response(UPR)to bring protein homeostasis in the endoplasmic reticulum(ER).Two key UPR regulators bZIP28 and bZIP60 have been shown to be essential for maintaining fertility under heat stress conditions in Arabidopsis,however,the function of transcriptional activator bZIP17,a paralog of bZIP28,in heat stress response at reproductive stage is not *** we found that bzip17 mutant plants were sensitive to heat stress in terms of silique length and fertility comparing to that of wildtype(WT)Arabidopsis plants,and transcri ptomic analysis showed that 1380 genes were specifically up-regulated and 493 genes were specifically down-regulated by heat stress in the flowers of WT plants comparing to that in bzip17 mutant *** bZIP17-dependent up-regulated genes were enriched in responses to a biotic stresses such as water deprivation and salt *** chromatin immuno-preci pitation coupled with high-throughput sequencing(ChIP-Seq)uncovered 1645 genes that were direct targets of bZIP17 in MYC-bZIP17 expressing seedlings subjected to heat *** these 1645 genes,ERSE-II cis-element was enriched in the binding peaks of their promoters,and the up-regulation of 113 genes by heat stress in flowers was dependent on *** results revealed direct targets of bZIP17 in flowers during heat stress responses and demonstrated the important role of bZIP17 in maintai ning fertility upon heat stress in plants.

关键词： Arabidopsis bZIP17 Flower Fertility Heat Stress UPR

Can big data bring a breakthrough for software automation?

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Science China(Information Sciences) 2018年第5期61卷 288-290页

作者： Hong mei lu ZHANG Key Laboratory on High-Confidence Software Technologies (Ministry of Education) Peking University Beijing Institute of Technology

Software automation[1]aims to automatically generate computer programs from formal or informal *** it may release programmers from tedious programming tasks,software automation has long been a dream of computer ***,since software systems constantly evolve during their life cycles,software automation should cover all development activities related to both generating new code and changing

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TgAb、TPO-Ab与首发抑郁症患者动脉硬化的相关性分析

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中国现代医学杂志 2020年第4期30卷 50-55页

作者：李宁杨胜良陆梅娟倪红芬耿松沈鑫华湖州市第三人民医院特检科浙江湖州313000 湖州市第三人民医院精神科浙江湖州313000 湖州市第三人民医院心身科浙江湖州313000 湖州市第三人民医院检验科浙江湖州313000

目的探讨血清甲状腺球蛋白抗体TgAb、甲状腺过氧化物酶抗体(TPO-Ab)与首发抑郁症患者动脉硬化的相关性。方法选取2018年1月—2018年11月湖州市第三人民医院收治的90例首发抑郁症患者,将患者分为TgAb阳性组、TPO-Ab阳性组和TgAb、TPO-Ab... 详细信息

目的探讨血清甲状腺球蛋白抗体TgAb、甲状腺过氧化物酶抗体(TPO-Ab)与首发抑郁症患者动脉硬化的相关性。方法选取2018年1月—2018年11月湖州市第三人民医院收治的90例首发抑郁症患者,将患者分为TgAb阳性组、TPO-Ab阳性组和TgAb、TPO-Ab均为阳性组,每组30例。同时随机抽取甲状腺抗体未见异常的首发抑郁症患者30例作为对照组。比较各组血清甲状腺激素水平、踝臂指数(ABI)、肱-踝动脉脉搏波传导速度(BaPWV)、下肢动脉内中膜(IMT)增厚及斑块发生率。结果各组BaPWV比较,经方差分析,差异有统计学意义(P<0.05)。各组下肢动脉ITM增厚、斑块形成比例比较,经χ2检验,差异有统计学意义(P<0.05),TgAb阳性组、TPO-Ab阳性组和TgAb、TPO-Ab均为阳性组下肢动脉ITM增厚、斑块形成例数高于对照组。年龄[O^R=0.943(95%CI=0.892,0.997)]和TgAb[O^R=1.015(95%CI=1.009,1.022)]是动脉病变的影响因素。结论首发抑郁症患者中血清TgAb、TPO-Ab阳性者的动脉硬化发生率高,其中TgAb为下肢动脉硬化的独立危险因素。自动化动脉硬化检测结合血管超声检测有助于首发抑郁症合并甲状腺自身抗体升高患者动脉硬化风险的筛查。

关键词：抑郁症动脉硬化甲状腺球蛋白碘化物过氧化物酶危险因素

解淀粉芽孢杆菌wxy-b3产脂肽类物质对苹果斑点落叶病菌的抑菌活性研究

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陕西科技大学学报 2025年第1期43卷 46-51页

作者：崔皓玥田露胡乐梅龚国利陕西科技大学食品科学与工程学院陕西西安710021

苹果斑点落叶病菌是苹果生产过程中常见的病害,严重危害苹果农作物的产量.脂肽作为一种主要来源于微生物次生代谢产物的抗菌剂,具有广谱抑菌、低耐药性、安全低毒等优势.本研究发现,解淀粉芽孢杆菌wxy-b3产生的脂肽类物质能够抑制苹果... 详细信息

苹果斑点落叶病菌是苹果生产过程中常见的病害,严重危害苹果农作物的产量.脂肽作为一种主要来源于微生物次生代谢产物的抗菌剂,具有广谱抑菌、低耐药性、安全低毒等优势.本研究发现,解淀粉芽孢杆菌wxy-b3产生的脂肽类物质能够抑制苹果斑点落叶病菌的生长,对苹果斑点落叶病菌的最小抑菌浓度为16 mg/mL,此浓度可造成该病原菌细胞膜电位超极化、线粒体膜电位去极化、大分子蛋白质和核酸泄露,以及胞内活性氧和丙二醛含量分别累积增加0.33倍和5.44倍,并通过扫描电镜进一步观察到MIC处理组的细胞形态起皱、细胞膜破损.上述结果表明,脂肽可能通过破坏细胞膜系统,导致细胞形态发生变化,细胞膜破裂,改变细胞膜通透性来达到抑菌效果.该研究将为脂肽作为抑制苹果斑点落叶病菌的抗菌剂奠定理论基础.

关键词：解淀粉芽孢杆菌脂肽类物质苹果斑点落叶病菌抑菌活性

Ophthalmic findings in two cases of methanol optic neuropathy with relapsed vision disturbance

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International Journal of Ophthalmology(English edition) 2015年第2期8卷 427-429页

作者： Xiu-juan Zhao Lin lu mei Li Hui Yang Zhongshan Ophthalmic Center Sun Yat-sen University

Dear Sir,We hereby report two cases of methanol optic neuropathy with relapsed vision *** intoxication appears after accidental or suicidal oral ingestion of industrial solvents or cleaning and antifreeze liquids or occasionally is due to fraudulent adulteration of wine or other alcoholic *** ingestion can cause severe visual disturbances and the outcomes of visual disturbances vary *** completely or partially recovered,and some suffered

关键词： Ophthalmic findings in two cases of methanol optic neuropathy with relapsed vision disturbance

Some Ore-type Results for Matching and Perfect Matching in k-uniform Hypergraphs

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Acta Mathematica Sinica,English Series 2018年第12期34卷 1795-1803页

作者： Yi ZHANG mei lu Department of Mathematical Sciences Tsinghua University

Let SI and S2 be two （k- 1）-subsets in a k-uniform hypergraph H. We call S1 and S2 strongly or middle or weakly independent if H does not contain an edge e ∈ E（H） such that S1 ∩ e≠ 0 and S2 ∩ e ≠0 or e S1 ∪ S2 or e S1 ∪ S2, respectively. In this paper, we obtain the following results concerning these three independence. （1） For any n ≥ 2k2 - k and k ≥ 3, there exists an n-vertex k-uniform hypergraph, which has degree sum of any two strongly independent （k - 1）-sets equal to 2n - 4（k - 1）, contains no perfect matching; （2） Let d ≥ 1 be an integer and H be a k-uniform hypergraph of order n ≥ kd＋（k- 2）k. If the degree sum of any two middle independent （k- 1）-subsets is larger than 2（d- 1）, then H contains a d-matching; （3） For all k ≥ 3 and sufficiently large n divisible by k, we completely determine the minimum degree sum of two weakly independent （k - 1）-subsets that ensures a perfect matching in a k-uniform hypergraph H of order n.

关键词： Ore-type condition matching perfect matching hypergraph

Fractal Analysis of Robertson-Stiff Fluid Flow in Porous Media

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Chinese Physics Letters 2012年第6期29卷 203-206页

作者： YUN mei-juan ZHENG Wei Key Laboratory of Systems Science in Metallurgical Process of Hubei Province Wuhan University of Science and TechnologyWuhan 430081 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500 State Key Laboratory of Geodesy and Earth’s Dynamics Institute of Geodesy and GeophysicsChinese Academy of SciencesWuhan 430077

The Robertson-Stiff (RS) fluid is the representative fluid which may be reduced to Bingham,power-law and Newtonian fluids under appropriate *** present fractal models for the flow rate,velocity,starting pressure gradient and effective permeability for RS fluids in porous media based on the fractal characteristics of porous media and capillary *** proposed models are expressed as functions of the fractal dimensions,porosity,maximum pore size and the representative length of the porous *** parameter in the proposed expressions has clear physical meaning,and the proposed models relate the flow characteristics of the RS fluids to the structural parameters of the porous *** analytical expressions reveal the physical principles of RS fluid flow in porous media.

关键词： fractal porous dimensions

Lower Bounds on the(Laplacian) Spectral Radius of Weighted Graphs

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Chinese Annals of Mathematics,Series B 2014年第4期35卷 669-678页

作者： Aimei YU mei lu Department of Mathematics Beijing Jiaotong University Department of Mathematical Sciences Tsinghua University

The weighted graphs, where the edge weights are positive numbers, are considered. The authors obtain some lower bounds on the spectral radius and the Laplacian spectral radius of weighted graphs, and characterize the graphs for which the bounds are attained. Moreover, some known lower bounds on the spectral radius and the Laplacian spectral radius of unweighted graphs can be deduced from the bounds.

关键词： Weighted graphs Adjacency matrix Laplacian matrix Spectral radius Lower bounds