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V0405 Dra:A New Deep and Low Mass Ratio Contact Binary with Extremely Fast Decrease in the Orbital Period

Research in Astronomy and Astrophysics 2024年第6期24卷 287-293页

作者： Chao-yue Li Lin-Qiao Jiang Jie Zheng Yi-Man Liu xiao-yu long Min Sun Han-Lu Zhang xiao-Man Tian School of Science Leshan Normal UniversityLeshan 614000China Center for Applied Optics Research Leshan Normal UniversityLeshan 614000China Key Laboratory of Detection and Application of Space Effect in Southwest Sichuan Leshan 614000China CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Aeronautics Shandong Jiaotong UniversityJinan 250000China

V0405 Dra is a W UMa-type binary *** on the TESS data,we have conducted an orbital period study and performed a light curve analysis for the *** orbital period study reveals that the O-C curve for V0405 Dra exhibits secular decrease at an extremely high rate of d P/dt=-2.71×10^(-6)day year^(-1),along with periodic variations characterized by an amplitude of A_(3)=0.0032 day and a period of P_(3)=1.413 *** orbital periodic change is possibly due to the light-travel time effect resulting from an additional third body in the system,for which we estimate a minimum mass of M_(3)=0.77M_(⊙).By employing the 2013 version of the Wilson-Devinney(W-D)method to synthesize a light curve,we derived photometric solutions indicating that V0405 Dra is a new deep(f=68.7%)and low-mass ratio(q=0.175)contact *** fast decrease in its orbital period is likely caused by mass transfer from the more massive primary star to the less massive secondary star,or due to angular momentum *** further mass transfer and loss of angular momentum,the binary will gradually evolve into a tighter contact configuration,eventually leading to a merger into a single star,following the evolutionary paths suggested for such deep and low mass ratio contact binaries.

关键词： (stars:)binaries(including multiple):close (stars:)binaries:eclipsing stars:individual(V0405 Dra)

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From Perspective of Hippocampal Plasticity:Function of Antidepressant Chinese Medicine xiaoyaosan

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Chinese Journal of Integrative Medicine 2024年第8期30卷 747-758页

作者： ZHANG Wu-jing GUO Ze-xuan WANG Yi-di FANG Shao-yi WAN Chun-miao yu xiao-long GUO xiao-fang CHEN yue-yue ZHOU Xuan HUANG Jun-qing LI xiao-juan CHEN Jia-xu FAN Li-li Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine School of Traditional Chinese MedicineJinan UniversityGuangzhou510632China

The hippocampus is one of the most commonly studied brain regions in the context of *** volume of the hippocampus is significantly reduced in patients with depression,which severely disrupts hippocampal ***,antidepressant therapies that target hippocampal neuroplasticity have not been identified as *** medicine(CM)can slow the progression of depression,potentially by modulating hippocampal ***(XYS)is a CM formula that has been clinically used for the treatment of *** is known to protect Gan(Liver)and Pi(Spleen)function,and may exert its antidepressant effects by regulating hippocampal *** this review,we have summarized the association between depression and aberrant hippocampal ***,we have discussed the researches published in the last 30 years on the effects of XYS on hippocampal neuroplasticity in order to elucidate the possible mechanisms underlying its therapeutic action against *** results of this review can aid future research on XYS for the treatment of depression.

关键词： depression hippocampal neuroplasticity xiaoyaosan Chinese medicine

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党的批评与自我批评方法溯源、原则遵循与实践要求

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齐齐哈尔大学学报（哲学社会科学版） 2024年第9期 56-59页

作者：喻小龙安徽广播影视职业技术学院马克思主义学院安徽合肥230011

批评与自我批评是中国共产党长期坚持、行之有效的工作方法,其产生具有深厚的历史渊源、其实施具有多方面的条件保障,是政党建设的一种科学方法。从建党初期自发的、零星的运用这一方法,到党的七大作为党的建设的重要方法广泛运用,伴随... 详细信息

批评与自我批评是中国共产党长期坚持、行之有效的工作方法,其产生具有深厚的历史渊源、其实施具有多方面的条件保障,是政党建设的一种科学方法。从建党初期自发的、零星的运用这一方法,到党的七大作为党的建设的重要方法广泛运用,伴随着中国共产党发展壮大的每个时期,直至今天依然是党的建设极其重要的方法与时俱进。为有效开展批评与自我批评,我们需要掌握正确的原则、立场和方法并提供扎实的条件保障,避免运用中的偏差或错误。

关键词：中国共产党批评与自我批评方法溯源实践要求

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CA-MobileNet V2:轻量化的作物病害识别模型

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计算机工程与设计 2024年第2期45卷 484-490页

作者：陈洋张欣陈孝玉龙林建吾蔡季桐贵州大学大数据与信息工程学院贵州贵阳550025 贵州大学农学院贵州贵阳550025

在传统的作物病害识别的深度学习模型中,存在检测精度与效率不高的问题。针对上述问题提出一种轻量化的改进型MobileNet V2模型CA-MobileNet V2(coordinate attention),在提升检测精度的同时,部署在移动端便于种植者使用。在MobileNet V... 详细信息

在传统的作物病害识别的深度学习模型中,存在检测精度与效率不高的问题。针对上述问题提出一种轻量化的改进型MobileNet V2模型CA-MobileNet V2(coordinate attention),在提升检测精度的同时,部署在移动端便于种植者使用。在MobileNet V2中嵌入坐标注意力模块,提升模型的精度;加入TanhExp激活函数,加速模型收敛,增强模型的鲁棒性和泛化性;将模型部署到移动端APP中,使模型具有良好的可视化应用效果。在PantifyDr和Turkey-PlantDataset数据集上的对比实验结果表明,CA-MobileNet V2具有精度高和轻量化的优势。

关键词：农作物病害深度学习卷积神经网络轻量化坐标注意力激活函数移动端部署

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Effect of chlorpyrifos on soil microbial populations and enzyme activities

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Journal of Environmental Sciences 2006年第1期18卷 4-5页

作者： SHAN Min FANG Hua WANG xiao FENG Bo CHU xiao-qiang yu yun-long Department of Plant Protection College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China

Chlorpyrifos is an organophosphate pesticide that acts as an insecticide-acaricide by ingestion, contact, and inhalation, and is now widely used in greenhouse for the control of pests. The dissipation of chlorpyrifos in crops such as orange fruit （Martinez-Vidal et al., 1998）, tomatoes（Aysal et al., 1999）, soil and its effects on soil microbial characteristics （Singh et al., 2002） has been reported frequently. However, little information is available to describe impacts of chlorpyrifos on soil microbial population and enzyme activity in greenhouse. In this study, the effect of chlorpyrifos on soil bacteria, fungi, actinomycetes, and soil enzyme activity was investigated.

关键词： chlorpyrifos microorganism soil enzyme

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南堡沙河街组硬脆性泥页岩地层漏失压力预测方法

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科学技术与工程 2024年第1期24卷 189-194页

作者：吴晓红李云峰余小龙陈金霞周岩梁利喜丁乙中国石油冀东油田钻采工艺研究院唐山063004 西南石油大学油气藏地质及开发工程国家重点实验室成都610500

南堡沙河街组硬脆性泥页岩是典型的井壁易失稳地层,钻井过程中,井壁垮塌、漏失现象频发。目前,针对页岩井壁失稳现象,研究主要集中在结构面影响下的井壁垮塌。然而,实际钻井过程中,由于泥页岩层理、裂缝等结构面发育,导致地层漏失明显,... 详细信息

南堡沙河街组硬脆性泥页岩是典型的井壁易失稳地层,钻井过程中,井壁垮塌、漏失现象频发。目前,针对页岩井壁失稳现象,研究主要集中在结构面影响下的井壁垮塌。然而,实际钻井过程中,由于泥页岩层理、裂缝等结构面发育,导致地层漏失明显,严重制约了安全高效钻井。因此,基于室内力学实验,考虑页岩结构面发育特征,融合页岩沿基体破裂、沿层理或裂缝破裂及沿裂缝扩展等多类漏失机制,构建了一种新的硬脆性泥页岩地层漏失压力预测方法,明确了地层漏失压分布特征及影响因素。研究结果显示:层理与天然裂缝作为典型弱结构面,是硬脆性泥页岩地层漏失的主要控制因素。相比较均质地层,结构面发育的页岩地层漏失压力明显降低,安全井眼轨迹方位减少,钻井难度增大。此外,受弱结构面影响,难见沿基体的破裂漏失现象。漏失优先出现在天然裂缝面,天然裂缝对漏失影响强于层理面。研究成果可为硬脆性页岩地层钻井设计提供理论基础,对实现页岩地层安全高效钻井具有重要意义。

关键词：页岩井壁稳定漏失压力结构面

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Glioma cell line proliferation controlled by different chemical functional groups in vitro

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Frontiers of Materials Science 2013年第1期7卷 69-75页

作者： Su-Ju XU Fu-Zhai CUI xiao-long yu Xiang-Dong KONG Xinyuan Institute of Medicine and Biotechnology School of Life Science Zhejiang Sci-Tech University Hangzhou 310018 China Institute of Regenerative Medicine anclBiomimetic Materials Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Glioma cell line C6 cultured on silicon surfaces modified by different chemical functional groups, including mercapto (-SH), carboxyl (-COOH), amino (-NH2), hydroxyl (-OH) and methyl (-CH3) groups, was studied here to investigate the influence of surface chemistry on the cell proliferation, adhesion and apoptosis. AFM confirmed the similar characteristic of different functional groups occupation. The adhering C6 exhibited morphological changes in response to different chemical functional groups. The C6 adhered to -COOH, -NH2, -OH and -CH3 surfaces and flattened morphology, while those on -SH surface exhibited the smallest contact area with mostly rounded morphology, which led to the death of cancer cells. The results of MTT assay showed that the -COOH and -NH2 groups promoted cell proliferation, while the -SH significantly inhibited the proliferation. Compared with other chemical functional groups, the -SH group exhibited its unique effect on the fate of cancer cells, which might provide means for the design of biomaterials to prevent and treat glioma.

关键词： glioma cell line C6 chemical functional group adhesion proliferation

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High-Temperature Stability of Mg-1Al-12Y Alloy Containing LPSO Phase and Mechanism of Its Portevin-Le Chatelier(PLC)Effect

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 982-998页

作者： Qian-long Ren Shuai yuan Shi-yu Luan Jin-Hui Wang xiao-Wei Li xiao-yu Liu Qinghai Provincial Key Laboratory of New Light Alloys Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and FormingQinghai UniversityXining810016China School of Materials Science and Engineering Shenyang University of TechnologyShenyang110870China

In this study,the high-temperature stability and the generation mechanism of the Portevin-Le Chatelier(PLC)effect in solid-solution Mg-1Al-12Y alloy with different heat treatment processes were investigated by adjusting the content of long-period stacking ordered(LPSO)*** was found that the content of LPSO phases in the alloys differed the most after heat treatment at 530℃for 16 h and 24 h,with values of 13.56%and 3.93%***,high-temperature tensile experiments were conducted on these two alloys at temperatures of 150℃,200℃,250℃,and 300℃.The results showed that both alloys exhibited the PLC effect at temperatures ranging from 150 to 250℃.However,at a temperature 300℃,only the alloy with a greater concentration of LPSO phases exhibited the PLC effect,whereas the alloy with a lower proportion of LPSO phases did not exhibit this ***,both alloys exhibited remarkable high-temperature stability,with the alloy containing a greater percentage of LPSO phases also demonstrating superior *** underlying mechanism for this phenomenon lies in the exceptional high-temperature stability exhibited by the second phase within the ***,the LPSO phase effectively obstructs the movement of dislocations,and it also undergoing kinking to facilitate plastic deformation of the *** results indicate that the PLC effect can be suppressed by reducing dislocation pile-up at grain boundaries,which leads to a decrease in alloy plasticity but an increase in *** presence of the PLC effect in the WA121 alloy is attributed to the abundant dispersed second phase within the alloy,which initially hinders the movement of dislocations,leading to an increase in stress,and subsequently releases the dislocations,allowing them to continue their movement and thereby reducing in stress.

关键词： Magnesium alloy long-period stacking ordered(LPSO)phase Portevin-Le Chatelier effect High temperature

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Effect of functional groups on the crystallization of ferric oxides/oxyhydroxides in suspension environment

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Frontiers of Materials Science 2012年第4期6卷 297-303页

作者： Qiong ZHOU Olga ALBERT Hua DENG xiao-long yu Yang CAO Jian-Bao LI Xin HUANG State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China College of Materials and Chemical Engineering Hainan UniversityHaikou 570228China ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry University Medical Center of the Johannes Gutenberg University MainzD-55128 MainzGermany Department of Oral and Maxillofacial Surgery Beiji-ng Stomatological HospitalCapital Medical LJniversityBeijing 100050China

This paper investigated the effects of five kinds of Au surfaces terminated with and without functional groups on the crystallization of ferric oxides/oxyhydroxides in the suspension condition. Self-assembled monolayers （SAMs） were used to create hydroxyl （-OH）, carboxyl （-COOH）, amine （-NH2） and methyl （-CH3） functionalized surfaces, which proved to be of the same surface density. The immersion time of substrates in the Fe（OH）3 suspension was divided into two time portions. During the first period of 2 h, few ferric oxide/oxyhydroxide was deposited except that E-Fe203 was detected on -NH2 surface. Crystallization for 10h evidenced more kinds of iron compounds on the functional surfaces. Goethite and maghemite were noticed on four functional surfaces, and maghemite also grew on Au surface. Deposition of ^-Fe203 was found on -OH surface, while the growth of orthorhombic and hexagon FeOOH were indicated on -NH2 surface. Considering the wide existence of iron compounds in nature, our investigation is a precedent work to the study of iron biomineralization in the suspension area.

关键词： biocrystallization suspension ferric oxide/oxyhydroxide functional group

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long-lived lunar volcanism sustained by precession-driven core-mantle friction

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National Science Review 2024年第2期11卷 114-123页

作者： Shuoran yu xiao xiao Shengxia Gong Nicola Tosi Jun Huang Doris Breuer long xiao Dongdong Ni State Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Planetary Science Institute State Key Laboratory of Geological Processes and Mineral Resources School of Earth Sciences China University of Geosciences CAS Key Laboratory of Planetary Sciences Shanghai Astronomical Observatory Institute of Planetary Research German Aerospace Centre(DLR)

Core-mantle friction induced by the precession of the Moon's spin axis is a strong heat source in the deep lunar mantle during the early phase of a satellite's evolution, but its influence on the long-term thermal evolution still remains poorly explored. Using a one-dimensional thermal evolution model, we show that core-mantle friction can sustain global-scale partial melting in the upper lunar mantle until ～3.1 Ga, thus accounting for the intense volcanic activity on the Moon before ～3.0 Ga. Besides, core-mantle friction tends to suppress the secular cooling of the lunar core and is unlikely to be an energy source for the long-lived lunar core dynamo. Our model also favours the transition of the Cassini state before the end of the lunar magma ocean phase(～4.2 Ga), which implies a decreasing lunar obliquity over time after the solidification of the lunar magma ocean. Such a trend of lunar obliquity evolution may allow volcanically released water to be buried in the lunar regolith of the polar regions. As a consequence, local water ice could be more abundant than previously thought when considering only its accumulation caused by solar wind and comet spreading.

关键词： Moon precession orbit volcanism

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