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Advances in Effects of Sound Waves on Plants

Journal of Integrative Agriculture 2014年第2期13卷 335-348页

作者： Reda H E Hassanien hou tian-zhen LI Yu-feng LI Bao-ming College of Water Resources and Civil Engineering China Agricultural University Agricultural Engineering Department Faculty of AgricultureCairo University Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture

Sound waves technology has been applied to different plants. It has been found that sound waves were at different frequencies, sound pressure levels （SPLs）, exposure periods, and distances from the source of sound influence plant growth. Experiments have been conducted in the open field and under greenhouse growing conditions with different levels of audible sound frequencies and sound pressure levels. Sound waves at 1 kHz and 100 dB for 1 h within a distance of 0.20 m could significantly promote the division and cell wall fluidity of callus cells and also significantly enhance the activity of protective enzymes and endogenous hormones. Sound waves stimulation could increase the plant plasma-membrane IT-ATPase activity, the contents of soluble sugar, soluble protein, and amylase activity of callus. Moreover, sound waves could increase the content of RNA and the level of transcription. Stress-induced genes could switch on under sound stimulation. Sound waves at 0.1-1 kHz and SPL of （70＋5） dB for 3 h from plant acoustic frequency technology （PAFT） generator within a distance ranged from 30 to 60 m every other day significantly increased the yield of sweet pepper, cucumber and tomato by 30.05, 37.1 and 13.2%, respectively. Furthermore, the yield of lettuce, spinach, cotton, rice, and wheat were increased by 19.6, 22.7, 11.4, 5.7, and 17.0%, respectively. Sound waves may also strengthen plant immune systems. It has been proved that spider mite, aphids, gray mold, late blight and virus disease of tomatoes in the greenhouses decreased by 6.0, 8.0, 9.0, 11.0, and 8.0%, respectively, and the sheath blight office was reduced by 50%. This paper provides an overview of literature for the effects of sound waves on various growth parameters of plant at different growth stages.

关键词： acoustic technology sound waves plants growth

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英语同义词语体意义探究

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内蒙古大学学报（哲学社会科学版） 2006年第3期38卷 115-120页

作者：侯天真内蒙古农业大学外国语学院内蒙古呼和浩特010018

英语同义词有着共同的基本意义。它们之间的细微差异不仅产生与英美的历史、地理及语言本身的发展与变化,还与由语境不同而产生的各种语言文体有着不可分割的关系。对同义词及各类文体意义深入研究使我们从本质上辨析词汇差异,并了解和... 详细信息

英语同义词有着共同的基本意义。它们之间的细微差异不仅产生与英美的历史、地理及语言本身的发展与变化,还与由语境不同而产生的各种语言文体有着不可分割的关系。对同义词及各类文体意义深入研究使我们从本质上辨析词汇差异,并了解和掌握它们在语言运用中的各种语体功能。

关键词：同义词语体意义语境

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植物声频控制技术的研究及应用进展

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中国农业大学学报 2010年第1期15卷 106-110页

作者：侯天侦李保明滕光辉祁丽荣侯凯中国农业大学农业部设施农业工程重点开放实验室北京100083 中国农业大学水利与土木工程学院北京100083 青岛天侦物理农业工程研究中心山东青岛266071

对植物声频控制技术的发展做了概述。1）该项技术的基础研究已由群体、个体、器官逐步深入到细胞和分子水平,包括光合和呼吸代谢、细胞周期同步化、生长激素、多种酶活性、可溶性蛋白和RNA的变化的研究,而技术的应用尚处于产业化的初期... 详细信息

对植物声频控制技术的发展做了概述。1）该项技术的基础研究已由群体、个体、器官逐步深入到细胞和分子水平,包括光合和呼吸代谢、细胞周期同步化、生长激素、多种酶活性、可溶性蛋白和RNA的变化的研究,而技术的应用尚处于产业化的初期。2）在水稻、棉花、小麦和部分蔬菜上的试验示范和应用结果表明了该项技术的增产、优质、抗病和环保作用。特定频率的声波处理可提高作物产量：水稻盆栽试验增产幅度17.4%~39.7%,田间试验增产5.7%;棉花增产幅度6.0%~9.0%;小麦增产17.0%;设施蔬菜的黄瓜、青椒增产高达60.0%以上。声波处理还提高了农作物品质,如：水稻的整精米率和蛋白质含量分别提高了59.4%和8.9%;小麦的淀粉、蛋白质和脂肪含量分别提高了6.3%、8.5%和11.6%。应用该项技术可有效地减轻病虫害危害：水稻纹枯病减轻了50%;处理温室番茄的红蜘蛛、蚜虫、灰霉病、晚疫病、和病毒病分别较对照组下降了6.0%、8.0%、9.0%、11.0%和8.0%。另外,3年的水稻盆栽试验结果表明,应用声波处理可减少25.0%的化肥用量。水稻、棉花和部分蔬菜应用该项技术的投资产出比为1∶2~1∶3。3）该项技术的发展潜力巨大。若我国每村销售3~4台本研究设计的植物声频处理装置（供专业户使用）,则市场年需求量约在100万台,可处理农田6.7×106hm2,国际市场需求量更大。植物声频控制技术应用研究的趋势是一方面与信息化技术相结合,实现产品的自动化和专一化;另一方面要与包括电、磁、光、热、核等物理农业技术组装集成为配套技术体系。

关键词：物理农业植物声频控制技术水稻棉花小麦蔬菜

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声频处理对草莓植株性状及叶片叶绿素荧光特性的影响

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中国农业大学学报 2010年第1期15卷 111-115页

作者：周清曲英华李保明侯天侦祝保英王丹中国农业大学水利与土木工程学院北京100083 北京市小汤山现代农业科技示范园北京102211

以草莓为供试材料,研究其生长性状及叶绿素光系统Ⅱ的荧光参数对声频处理的响应。试验结果表明:声频处理35 d后,草莓的开花数、结果数和叶绿素含量均有所提高,其光系统Ⅱ的初始荧光F0、反映电子传递能力的ΦPSⅡ略有升高,最大荧光Fm及... 详细信息

以草莓为供试材料,研究其生长性状及叶绿素光系统Ⅱ的荧光参数对声频处理的响应。试验结果表明:声频处理35 d后,草莓的开花数、结果数和叶绿素含量均有所提高,其光系统Ⅱ的初始荧光F0、反映电子传递能力的ΦPSⅡ略有升高,最大荧光Fm及反映光化学效率的Fv/Fm值、反映光下开放的PSⅡ反应中心原初光能捕获效率的Fv′/Fm′均显著上升。表明声频处理后,PSⅡ反应中心的潜在活性增强,原初光能转换效率提高,电子传递和光化学效率上升。

关键词：声频处理草莓光系统Ⅱ 叶绿素荧光植株性状

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基于Vision Transformer的车辆重识别模型优化

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郑州大学学报（理学版） 2025年第1期57卷 46-52页

作者：张震张亚斌田鸿朋郑州大学电气与信息工程学院河南郑州450001

针对车辆重识别任务中样本类内差异性大和类间相似度高的问题,提出了一种Vision Transformer框架下的车辆重识别方法。设计一种关键区域选择模块,整合Transformer中注意力分数矩阵,加强车辆的具有辨别性区域的关注程度,减小局部区域过... 详细信息

针对车辆重识别任务中样本类内差异性大和类间相似度高的问题,提出了一种Vision Transformer框架下的车辆重识别方法。设计一种关键区域选择模块,整合Transformer中注意力分数矩阵,加强车辆的具有辨别性区域的关注程度,减小局部区域过度集中的注意力权重;构建一种包含对比损失和中心损失的混合损失函数,对比损失函数的引入增强了模型捕捉和比较样本之间的差异的能力,中心损失使得同一类别的样本更加紧密地聚集在一起,增强类间样本的区分度。实验结果验证了其有效性。

关键词：车辆重识别自注意力机制注意力权重区域选择

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A Modified Third-Order Semi-Discrete Central-Upwind Scheme for MHD Simulation

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Chinese Physics Letters 2011年第7期28卷 221-224页

作者： JI zhen Zhou Yu-Fen hou tian-Xiang State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of SciencesBeijing 100190 Graduate School Chinese Academy of SciencesBeijing 100049 China Meteorological Administration Training Centre Beijing 100081

The Kurganov scheme is a third-order semi-discrete central numerical *** high solution of the scheme is ensured by a piecewise quadratic non-oscillatory reconstruction which consists of the cell-average *** employ a modification of the smooth limiter of reconstruction in a simple *** modified limiter possesses rigorous positivity and the reformulation does not change the non-oscillatory property of *** order to explore the potential capability of application of the modified Kurganov scheme to magnetohydrodynamics(MHD)and resistive magnetohydrodynamics(RMHD)equations,two numerical problems are simulated in two dimensions(2D).These numerical simulations demonstrate that the modified Kurganov scheme keeps high precision and has stable reliable results for MHD and RMHD applications.

关键词： scheme oscillatory piecewise

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Primary mucosal-associated lymphoid tissue extranodal marginal zone lymphoma of the bladder from an imaging perspective: A case report

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World Journal of Clinical Cases 2021年第32期9卷 10024-10032页

作者： zhen-zhen Jiang Yuan-Yuan zheng Chuan-Ling hou Xia-tian Liu Department of Ultrasound Shaoxing People’s Hospital(Shaoxing HospitalZhejiang University School of Medicine)Shaoxing 312000Zhejiang ProvinceChina Department of Pathology Shaoxing People’s Hospital(Shaoxing HospitalZhejiang University School of Medicine)Shaoxing 312000Zhejiang ProvinceChina

BACKGROUND Mucosal-associated lymphoid tissue extranodal marginal zone(MALT)lymphoma is a low-grade tumor that rarely occurs in the urinary *** is currently no consensus on the common imaging findings or most appropriate treatment in MALT lymphoma in the urinary bladder due to the limited number of *** SUMMARY A 48-year-old woman was admitted to the hospital with a 1-year history of macroscopic *** showed a large homogeneous mass with an unclear boundary and an irregular morphology in the *** mass had an abundant blood *** further diagnosis,transurethral cystoscopic biopsy and bone marrow biopsy was performed,and the patient was finally diagnosed with primary MALT lymphoma of the bladder.R-CHOP chemotherapy was carried *** three cycles of chemotherapy,the mass disappeared and the bladder wall thickness was only 4 mm,which indicated excellent therapeutic response to the *** date,the patient remains asymptomatic and she visits our hospital regularly for the completion of the remaining chemotherapy *** Primary MALT lymphoma of the bladder is rare,and there are certain characteristics in the ultrasonographic *** findings play an important role in evaluating the therapeutic efficacy and are critical during long-term follow-up after therapy.

关键词： Mucosal-associated lymphoid tissue extranodal marginal zone lymphoma Bladder Ultrasonography Computed tomography Case report

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Topological domain states and magnetoelectric properties in multiferroic nanostructures

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National Science Review 2019年第4期6卷 684-702页

作者： Guo tian Wenda Yang Deyang Chen zhen Fan Zhipeng hou Marin Alexe Xingsen Gao Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials and Institute for Advanced Materials South China Academy of Advanced OptoelectronicsSouth China Normal University Department of Physics University of Warwick

Multiferroic nanostructures have been attracting tremendous attention over the past decade, due to their rich cross-coupling effects and prospective electronic applications. In particular, the emergence of some exotic phenomena in size-confined multiferroic systems, including topological domain states such as vortices, center domains, and skyrmion bubble domains, has opened a new avenue to a number of intriguing physical properties and functionalities, and thus underpins a wide range of applications in future nanoelectronic devices. It is also highly appreciated that nano-domain engineering provides a pathway to control the magnetoelectric properties, which is promising for future energy-efficient spintronic devices. In recent years, this field, still in its infancy, has witnessed a rapid development and a number of challenges *** this article, we shall review the recent advances in the emergent domain-related exotic phenomena in multiferroic nanostructures. Specific attention is paid to the topological domain structures and related novel physical behaviors as well as the electric-field-driven magnetic switching via domain engineering. This review will end with a discussion of future challenges and potential directions.

关键词： topological defects ferroelectric domains multiferroic nanostructures magnetoelectric coupling

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A Novel High-Entropy Amorphous Thin Film with High Electrical Resistivity and Outstanding Corrosion Resistance

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Acta Metallurgica Sinica(English Letters) 2021年第11期34卷 1537-1545页

作者： Chuang-Shi Feng tian-Wei Lu tian-Li Wang Man-zhen Lin Junhua hou Wenjun Lu Wei-Bing Liao College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China

This study explores a novel WNbMoTaV high-entropy thin film(HETF)in amorphous structure via pulsed laser deposition *** formation of amorphous structure of this high-entropy alloy is ascribed to the high cooling rate during the deposition *** HETF shows a smooth surface with a height fl uctuation of less than 13 *** film has a high electrical resistivity of~320.6μΩ·cm and a low corrosion current density of 0.088μA/cm *** corrosion resistance of the HETF at ambient temperature is superior to the conventional AISI 316 L stainless *** high electrical resistivity and excellent corrosion resistance of the HETF are mainly attributed to its chemical disorder,cocktail effect and homogeneous amorphous *** experimental phenomenon not only provides a basis for the preparation of amorphous alloy films with low glass forming ability by pulsed laser deposition system,also promotes the potential application of WNbMoTaV HETF in the microelectronic components as resistivity sensors.

关键词： High-entropy alloys Thin films Electrical resistivity Microstructures Corrosion behaviors

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Degradation induces changes in the soil C:N:P stoichiometry of alpine steppe on the Tibetan Plateau

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Journal of Mountain Science 2019年第10期16卷 2348-2360页

作者： ZHANG zhen-chao hou Ge LIU Miao WEI tian-xing SUN Jian School of Soil and Water Conservation Beijing Forestry UniversityBeijing100083China Synthesis Research Centre of Chinese Ecosystem Research Network Key Laboratory of Ecosystem NetworkObservation and ModellingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy ofSciencesBeijing100101China State Key Laboratory of Urban and Regional Ecology Research Center for Eco–environmental SciencesChineseAcademy of SciencesBeijing100085China Department of Ecology Evolutionand Natural ResourcesSchool of Environmental and Biological SciencesRutgersUniversityNew BrunswickNew Jersey08901USA

Due to the Tibetan Plateau’s unique high altitude and low temperature climate conditions,the region’s alpine steppe ecosystem is highly fragile and is suffering from severe degradation under the stress of increasing population,overgrazing,and climate *** soil stoichiometry,a crucial part of ecological stoichiometry,provides a fundamental approach for understanding ecosystem processes by examining the relative proportions and balance of the three *** the impact of degradation on the soil stoichiometry is vital for conservation and management in the alpine steppe on the Tibetan *** study aims to examine the response of soil stoichiometry to degradation and explore the underlying biotic and abiotic mechanisms in the alpine *** conducted a field survey in a sequent degraded alpine steppe with seven levels inNorthern *** plant species,aboveground biomass,and physical and chemical soil properties such as the moisture content,temperature,pH,compactness,total carbon(C),total nitrogen(N),and total phosphorus(P)were measured and *** results showed that the contents of soil C/N,C/P,and N/P consistently decreased along intensifying degradation *** regression analysis and a structural equation model(SEM),we found that the C/N,C/P,and N/P ratios were positively affected by the soil compactness,soil moisture content and species richness of graminoids but negatively affected by soil pH and the proportion of aboveground biomass of *** soil temperature had a negative effect on the C/N ratio but showed positive effect on the C/P and N/P *** current study shows that degradation-induced changes in abiotic and biotic conditions such as soil warming and drying,which accelerated the soil organic carbon mineralization,as well as the increase in the proportion of forbs,whichwere difficult to decompose and input less organic carbon into soil,resulted in the decreases in soil C/N,C/P,and N/P contents to a great ex

关键词： Tibetan Plateau Alpine steppe Degradation Soil stoichiometry C/N C/P N/P

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