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Design of coherent wideband radiation process in a Nd3+-doped high entropy glass system

Light(Science & Applications) 2022年第9期11卷 2065-2076页

作者： LINDE ZHANG JINGYUAN ZHANG XIANG WANG MENG TAO GANGTAO DAI JING WU zhangwang miao SHIFEI HAN HAIJUAN YU Xuechun Lin Laboratory of All-solid-state Light Sources Beijing Engineering Research CenterInstitute of SemiconductorsChinese Academy of Sciences100083 BeijingChina Synlumin Conuninex(Shanghai)Enterprise Development Co. Ltd.201401 ShanghaiChina Time-wave-space Optical Technology(Xiaogan)Co. Ltd.432012 XiaoganHubeiChina High-dimensional Plasma Sources Technology(Xiaogan)Co. Ltd.432012 XiaoganHubeiChina

We discover that the spatially coherent radiation within a certain frequency range can be obtained without a common nonlinear optical ***,the emission spectra were obtained by de-exciting excited centers from real excited energy levels to the ground *** findings are achieved by deploying a high-entropy glass system(HEGS)doped with neodymium *** HEGS exhibits a much broader infrared absorption than common glass systems,which can be attributed to be high-frequency optical branch phonons or allowable multi-phonon processes caused by phonon broadening in the system.A broadened phonon-assisted wideband radiation(BPAWR)is induced if the pump laser is absorbed by the *** subsequent low-threshold self-absorption coherence modulation(SACM)can be controlled by changing excitation wavelengths,sample size,and doping *** SACM can be red-shifted through the emission of phonons of the excited species and be blue-shifted by absorbing phonons before they are *** is a time delay up to 1.66 ns between the pump pulse and the BPAWR when measured after traveling through a 35 mm long sample,which is much longer than the Raman *** BPAWR-SACM can amplify the centered non-absorption band with a gain up to 26.02 *** results reveal that the shift of the novel radiation is determined by the frequency of the non-absorption band near the absorption region,and therefore the emission shifts can be modulated by changing the absorption *** used in fiber lasers,the BPAWR-SACM process may help to achieve tunability.

关键词： pump wideband excited

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位置信息端云可信传输方案设计

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信息网络安全 2023年第10期 39-47页

作者：张璐屠晨阳苗张旺甘静鸿中国科学院信息工程研究所信息安全国家重点实验室北京100085 中国科学院大学网络空间安全学院北京100049 国家信息中心北京100045 中国人民公安大学信息网络安全学院北京100038 漳州市公安局台商投资区分局漳州363000

由于北斗导航技术与大众消费级应用的深度融合发展,位置信息的重要性愈加凸显,但大多应用未对位置信息进行充分保护,计算复杂性高的传统密码学方案不能直接用于资源受限的北斗导航应用环境,且终端的软件执行环境也并不安全。因此文章基... 详细信息

由于北斗导航技术与大众消费级应用的深度融合发展,位置信息的重要性愈加凸显,但大多应用未对位置信息进行充分保护,计算复杂性高的传统密码学方案不能直接用于资源受限的北斗导航应用环境,且终端的软件执行环境也并不安全。因此文章基于专用的北斗导航芯片,在芯片内部利用密码与通信模块实现轻量级的位置信息端云可信传输机制,基于TLS(Transport Layer Security)的协议思路保护位置信息在传输中的真实性、完整性与机密性。文章所提方案尽可能少地使用复杂的计算、验证与证书管理,在保证数据处理性能的同时抵御中间人攻击、重放攻击、拒绝服务等攻击,具有一定的安全性与鲁棒性。

关键词：北斗位置保护安全通信端云可信传输

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基于细粒度访问控制的勒索软件防御系统设计

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信息网络安全 2023年第10期 31-38页

作者：朱怡昕苗张旺甘静鸿马存庆中国科学院信息工程研究所信息安全国家重点实验室北京100085 中国科学院大学网络空间安全学院北京100049 国家信息中心北京100045 中国人民公安大学信息网络安全学院北京100038 漳州市公安局台商投资区分局网安大队漳州363000

勒索软件是网络犯罪的主要形式之一,危害着公共社会的安全。当前的防御方案主要通过访问控制,存在授权粒度太粗、权限管理不灵活和无法正确处理异常等缺陷。为了防御勒索软件、保护主机文件资源的安全,文章提出一个基于细粒度访问控制... 详细信息

勒索软件是网络犯罪的主要形式之一,危害着公共社会的安全。当前的防御方案主要通过访问控制,存在授权粒度太粗、权限管理不灵活和无法正确处理异常等缺陷。为了防御勒索软件、保护主机文件资源的安全,文章提出一个基于细粒度访问控制的勒索软件防御方案,该方案包括3个主要功能,首先对文件系统的细粒度动态的访问控制;然后通过上下文的程序意图进行分析;最后对异常进行分级确认。文章实现了方案原型,分析结果表明,该方案可以有效拦截勒索软件的文件行为,并且能够减小勒索软件带来的损失。

关键词：勒索软件防御访问控制上下文分析分级确认细粒度

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Ligand Perception,Activation,and Early Signaling of Plant Steroid Receptor Brassinosteroid Insensitive 1

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Journal of Integrative Plant Biology 2013年第12期55卷 1198-1211页

作者： Jianjun JiangWang Chi zhangwang Xuelu Wang State Key Laboratory of Genetic Engineering and Institute of Plant Biology School of Life SciencesFudan University

Leucine-rich repeat receptor-like kinases （LRR-RLKs） belong to a large group of cell surface proteins involved in many aspects of plant development and environmental responses in both monocots and dicots. Brassinosteroid insensitive 1 （BRI1）, a member of the LRR X subfamily, was first identified through several forward genetic screenings for mutants insensitive to brassinosteroids （BRs）, which are a class of plant-specific steroid hormones. Since its identification, BRI1 and its homologs had been proved as receptors perceiving BRs and initiating BR signaling. The co-receptor BRIl-associated kinase 1 and its homologs, and other BRI1 interacting proteins such as its inhibitor BRI1 kinase inhibitor I （BKI1） were identified by genetic andbiochemical approaches. The detailed mechanisms of BR perception by BRI1 and the activation of BRI1 receptor complex have also been elucidated. Moreover, several mechanisms for termination of the activated BRI1 signaling were also discovered. In this review, we will focus on the recent advances on the mechanism of BRI1 phosphorylation and activation, the regulation of its receptor complex, the structure basis of BRI1 ectodomain and BR recognition, its direct substrates, and the termination of the activated BRI1 receptor complex.

关键词： Brassinosteroid insensitive 1-associated kinase 1 brassinosteroid insensitive 1 kinase inhibitor 1 brassinosteroids brassinosteroidinsensitive 1 phosphorylation receptor-like kinase recognition signaling.

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Effect of Different Norms of Under-Mulch-Drip Irrigation on Diurnal Changes of Photosynthesis and Chlorophyll Fluorescence Parameter in High Yield Cotton of Xinjiang

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Agricultural Sciences in China 2003年第5期2卷 533-538页

作者： LIShao-kun GOULing YUSong-lie CAOLian-pu zhangwang-feng RENLi-tong WANGZhen-lin KeyLaboratoryofCropGeneticandBreeding MinistryofAgriculture/InstituteofCropBreedingandCultivationChineseAcademyofagriculturalSciencesBeijing100081P.R.China KeyLaboratoryofOasisEcologyAgricultureofXinjiangBingtuan/ResearchCenterofXinjiangCropHigh-Yield ShiheziUniversityShihexi832003P.R.China CollegeofAgronomy ShandongAgriculturalUniversityTai‘an271018P.R.China

Under-mulch-drip irrigation is an advanced irrigation technique, which combines plastic-film-covered cultivation with drip irrigation. The influence of different norms of under-mulch-drip irrigation on diurnal changes of photosynthetic rates and chlorophyll fluorescence parameters of cotton was studied, in order to understand the physiological mechanisms of water-saving and high-yielding farming in Xinjiang. Results indicated that limited drip irrigation, which supplies 2/3 of 375 m3 ha-1, the widely-used irrigation norm in cotton cultivation in Xinjiang, caused a water deficit in cotton field. Compared with the proper drip irrigation, the leaf photosynthetic rate under limited drip irrigation decreased during 9:00 to 11:00 a. m. , and was significantly suppressed at midday, and then recovered afterwards. Using the chlorophyll fluorescence method, the absorption, transfer and transformation features of solar radiation by cotton leaf were investigated. Under limited drip irrigation, the variable fluorescence (Fv) and primary light transfer efficiency of PSII (Fv/Fm) in cotton leaves were reduced because of the high light intensities and high temperatures at noon, and the decrease in XinluzaoS was greater than that in Xinluzao6. Therefore, it could be concluded that Xinluzao6 has a higher drought-tolerance, and the Fv/Fm ratio could be used as a drought-resistance index for cotton.

关键词： Cotton Photosynthesis Chlorophyll fluorescence Diurnal changes Under-mulch-drip irrigation

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Individual Cotton Boll Weight as Influenced by Different Production Eco-Regions and Meteorological Factors

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Agricultural Sciences in China 2003年第9期2卷 964-969页

作者： zhangwang-feng GOULing WANGZhen-lin LIShao-kun YUSong-lie CAOLian-pu LIWei-ming KeyLaboratoryofOasisEcologyAgricultureofXiniiangBingtuan／ResearchCenterofXinjiangCropHigh-Yield ShiheziUniversityShihezi832003P.R.China CollegeofAgronomy ShandongAgriculturalUniversityTai‘an271018P.R.China KeyLaboratoryofCropGeneticandBreeding MinistryofAgriculture／InstituteofCropBreedingandCultivationChineseAcademyofAgnculturalSciencesBeijing100081P.R.China InstituteofCotton HebeiAcademyofAgriculturalSciencesShijiazhuang050051P.R.China）

In order to explore systematically the physiological mechanism of high yield cotton ( Gossypium hirsutum L.) in Xinjiang, and further improve yield, the yield components were compared between three ecological regions. Boll number per plant was lower in South and North Xinjiang, but the harvested plant population were nearly 1.5 times higher than that in Nangong, so total boll numbers per unit area were greater in South and North Xinjiang. Weight per boll in south and north of Xinjiang was 5.896.50 g and 5.43 6.12 g respectively, 24 to 51% heavier than that in Nangong. The diurnal temperature difference between day and night was relatively greater in Xinjiang than in Nangong, benefitting the accumulation of photosynthetic product in bolls. The temperature difference and total hours of sunshine in boll period are the main reasons for cottons higher boll weight and yield in Xinjiang than in Nangong.

关键词： Gossypium hirsutum Cotton Single boll weight Meteorological factor Eco region

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Antialiasing Compass Meter Display by Gaussian Integration

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Computer Aided Drafting,Design and Manufacturing 2005年第1期15卷 41-45页

作者： LICheng-gui ZHANGQing-rong zhangwang-yuan SchoolofInstrumentScienceandOpto-electronicsEngineering BeijingUniversityofAeronauticsandAstronauticsBeijing100083China

Detailed mathematical deduction is presented to improve the graphics quality of aircraft dashboards. Generation of rhumb lines with such kind of algorithm shows that the new approach is effective.

关键词： computer graphics compass meter Gaussian integration antialising algorithm

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基于DSP的镁合金数字化微弧氧化电源研究

基于DSP的镁合金数字化微弧氧化电源研究

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作者：张旺兰州理工大学

学位级别：硕士

镁合金具有密度小、比强度和比刚度高、减震性好、电磁屏蔽性好等特点,因此,镁合金越来越广泛的应用于航空、汽车和电子通讯等工业中。但它的耐蚀性差,严重限制了其应用的发展。常用的化学氧化和阳极氧化等表面处理方法对镁合金有一定... 详细信息

镁合金具有密度小、比强度和比刚度高、减震性好、电磁屏蔽性好等特点,因此,镁合金越来越广泛的应用于航空、汽车和电子通讯等工业中。但它的耐蚀性差,严重限制了其应用的发展。常用的化学氧化和阳极氧化等表面处理方法对镁合金有一定的保护作用,但是耐蚀性、外观等方面仍不能满足其应用发展的需要。近年来,人们进行了各种新技术的开发,微弧氧化技术较好的满足了上述要求。微弧氧化又称微等离子体氧化或阳极火花沉积,是新兴起的一种材料表面处理方法,是在阳极氧化的基础上发展起来的一项高新技术。电源设备是微弧氧化技术制备陶瓷膜的关键设备,目前用微弧氧化方法处理金属表面时,所用的电源大多为直流电源或直流加单向脉冲式电源,本系统是在消除现有电源不足的基础上而设计的双端脉冲式变压变频微弧氧化电源。该电源是一种正、负脉冲幅度、频率、占空比以及脉冲个数分别连续可调的双极性大功率电源。通过对工作脉冲参数的优化选择,能确保获得最佳的陶瓷结构层,良好的生产效率和安全、可靠、方便的操作性能。因此可以满足微弧氧化实验研究工作及工业生产的需要。本电源在主电路设计方面,采用晶闸管整流和IGBT逆变相结合的方式,通过可控整流电路来调节输出电压的大小,利用斩波电路实现输出波形的控制,这种结构大大简化了电源结构和控制策略,减小了电源的体积。在控制方面,采用基于TMS320LF2407ADSP控制的硬件设计方案,通过TMS320LF2407A向整流电路输出PWM触发脉冲,控制晶闸管的触发角,使输出电压连续可调;向斩波电路发出PWM驱动信号,控制IGBT的通断,达到控制输出波形的目的。系统中设计了过流、过压及过热综合保护,保证功率器件的安全工作。为了保证电源在恶劣的条件下能够正常工作,分析了影响电源正常工作的各种干扰,并制定了相应的抗干扰措施。对于电源需要完善的地方进行了详细介绍,为下一步研究工作奠定基础。

关键词：微弧氧化变压器晶闸管整流斩波 IGBT DSP

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国际贸易中“绿色包装”的可持续发展之路

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北京工商大学学报（社会科学版） 2007年第2期22卷 12-17页

作者：王章旺北京工商大学传播与艺术学院北京100037

绿色包装的发展直接关系到环境的保护和资源的有效利用。重视改进出口包装,实行绿色包装,是增强我国包装业发展后劲,提高竞争力的重要手段,也是实施可持续发展的重要措施。

关键词：绿色包装法律法规国际贸易

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Application of serum surface-enhanced laser desorption/ionization proteomic patterns in distinguishing lung cancer patients from healthy people

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Chinese Medical Journal 2005年第12期118卷 1036-1039页

作者： YANGShuan-ying XIAOXue-yuan zhangwang-gang SUNXiu-zhen ZHANGLi-juan ZHANGWei ZHOUBin CHENGuo-an HEDa-cheng DepartmentofRespiratoryMedicine KeyLaboratoryforCellProliferationandRegulationBiologyMinistryofEducation BeijingNormalUniversityBejing100875China GeneralThoracicSurgery

Screening and early diagnosis of lung cancer relies mainly on chest X-ray, low-dose computed tomography, bronchoscopy, sputum cytology, and measurement of tumor markers such as carcinoembryonic antigen (CEA), cytokeratin-19 fragments (Cyfra21-1), and neuron-specific enolase (NSE). However, all these methods lack adequate sensitivity and/or specificity. 1-3 Better methods are therefore urgently needed in screening and early diagnosis of lung cancer, and proteomic fingerprinting represents a promising approach. Surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS), an innovative proteomic technology, has overcome many of the limitations of two-dimensional electrophoresis (2D) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). 4,5 Recently, this technology has been successfully used to distinguish pancreatic, ovarian and prostate cancer patients from healthy control subjects. 5-7 The aim of the current study was to investigate the application of serum SELDI protein profiling in distinguishing lung cancer patients from healthy persons.

关键词： lung cancer · proteinchip · biomarker · early diagnosis

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