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Rare Metals 2006年第5期25卷 420-426页

作者： GU Yousong LI Jianmin ZHAN Xiaoyuan ZHANG Xiaomei feng ziqi ZHANG Yue Department of Material Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China

First principle calculations have been performed to study the electron structures and magnetic properties of transition metal doped ruilles in order to predict room temperature diluted magnetic semiconductors. Different doping configurailons have been calculated to find the preferred doping site. The ground state energies of both FM and AFM states have been calculated to study the magnetic coupling between the dopants. The calculation results show the Co doped mutile has a Curie temperature of 1438 K. Co doped mille films have been prepared on Si substrate by magnetron sputtering. X-ray diffraction results show that the deposited film is ruille. Hysteresis loop curves measured by vibration sample magnetization show that the film is ferromagnetic at root temperature.

关键词： diluted magnetic semiconductor titanium oxide fast principle calculation magnetron sputtering

Acceptor modulation for improving thermally activated delayed fluorescence emitter in through-space charge transfer on spiroskeletons

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Chinese Chemical Letters 2023年第6期34卷 467-470页

作者： Jingfeng Liu ziqi feng Chenchen Peng Youjun Yu Shengyi Yang Zuoquan Jiang Liangsheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa 999078Macao SARChina

Through-space charge transfer(TSCT)is regarded as an effective way to develop thermally activated delayed fluorescence(TADF)*** on this strategy,many molecular frameworks have been proposed,among which spirobased scaffolds have been extensively studied due to their unique *** this work,we developed three emitters SPS,SPO,and SPON,which were constructed with the same donor and various acceptors to explore the influence of acceptor modulation at the C9 position of fluorene for spirostructure TSCT *** results show that the acceptor with too weak electronwithdrawing ability will cause the emitter to not have TADF properties,while the acceptor with too much steric hindrance will weaken the face-to-faceπ-πstacking interaction between donor/acceptor(D/A).Since SPO balances the electron-withdrawing strength and steric hindrance of the acceptor,it achieves the highest external quantum efficiency(EQE)of 17.75%.This work shows that appropriate acceptor selection is essential for the TADF properties and high efficiency of the spirobased scaffold TSCT emitter.

关键词： Thermally activated delayed fluorescence Organic light-emitting diodes Through-space charge transfer Acceptor modulation Spiro skeleton

Swarming Responsive Photonic Nanorobots for Motile-Targeting Microenvironmental Mapping and Mapping-Guided Photothermal Treatment

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Nano-Micro Letters 2023年第9期15卷 205-223页

作者： Luolin Li Zheng Yu Jianfeng Liu Manyi Yang Gongpu Shi ziqi feng Wei Luo Huiru Ma Jianguo Guan Fangzhi Mou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China School of Materials and Microelectronics Wuhan University of TechnologyWuhan 430070People’s Republic of China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070People’s Republic of China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070People’s Republic of China

Micro/nanorobots can propel and navigate in many hard-to-reach biological environments,and thus may bring revolutionary changes to biomedical research and ***,current MNRs lack the capability to collectively perceive and report physicochemical changes in unknown *** we propose to develop swarming responsive photonic nanorobots that can map local physicochemical conditions on the fly and further guide localized photothermal *** RPNRs consist of a photonic nanochain of periodically-assembled magnetic Fe_(3)O_(4)nanoparticles encapsulated in a responsive hydrogel shell,and show multiple integrated functions,including energetic magnetically-driven swarming motions,bright stimuli-responsive structural colors,and photothermal ***,they can actively navigate in complex environments utilizing their controllable swarming motions,then visualize unknown targets(e.g.,tumor lesion)by collectively mapping out local abnormal physicochemical conditions(e.g.,pH,temperature,or glucose concentra-tion)via their responsive structural colors,and further guide external light irradiation to initiate localized photothermal *** work facilitates the development of intelligent motile nanosensors and versatile multifunctional nanotheranostics for cancer and inflam-matory diseases.

关键词： Micro/nanorobots Collective behaviors Responsive photonic crystals On-the-fly sensing Photothermal therapy

Genetic source,migration and accumulation of helium under deep thermal fluid activities:A case study of Ledong diapir area in Yinggehai Basin,South China Sea

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Petroleum Exploration and Development 2024年第3期51卷 753-766页

作者： feng ziqi HAO Fang HU Lin HU Gaowei ZHANG Yazhen LI Yangming WANG Wei LI Hao XIAO Junjie TIAN Jinqiang State Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China School of Geosciences China University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Qingdao Marine Science and Technology CenterQingdao 266237China Hainan Branch of CNOOC(China)Co. Ltd.Haikou 570312China

Based on the geochemical parameters and analytical data,the heat conservation equation,mass balance law,Rayleigh fractionation model and other methods were used to quantify the in-situ yield and external flux of crust-derived helium,and the initial He concentration and thermal driving mechanism of mantle-derived helium,in the Ledong Diapir area,the Yinggehai Basin,in order to understand the genetic source,migration and accumulation mechanisms of helium under deep thermal fluid *** average content of mantle-derived He is only 0.0014%,the ^(3)He/^(4)He value is(0.002–2.190)×10^(−6),and the R/Ra value ranges from 0.01 to 1.52,indicating the contribution of mantle-derived He is 0.09%–19.84%,while the proportion of crust-derived helium can reach over 80%.Quantitative analysis indicates that the crust-derived helium is dominated by external input,followed by in-situ production,in the Ledong diapir *** crust-derived helium exhibits an in-situ 4 He yield rate of(7.66–7.95)×10^(−13)cm^(3)/(a·g),an in-situ 4 He yield of(4.10–4.25)×10^(−4)cm^(3)/g,and an external 4 He influx of(5.84–9.06)×10^(−2)cm^(3)/*** results may be related to atmospheric recharge into formation fluid and deep rock-water *** ratio of initial mole volume of 3 He to enthalpy(W)is(0.004–0.018)×10^(−11) cm^(3)/J,and the heat contribution from the deep mantle(X_(M))accounts for 7.63%–36.18%,indicating that deep hot fluid activities drive the migration of mantle-derived 3 *** primary helium migration depends on advection,while the secondary migration is controlled by hydrothermal degassing and gas-liquid *** deep to shallow layers,the CO_(2/3) He value rises from 1.34×10^(9)to 486×10^(9),indicating large amount of CO_(2)has *** the influence of deep thermal fluid,helium migration and accumulation mechanisms include:deep heat driven diffusion,advection release,vertical hydrothermal degassing,shallow lateral migration,accumulation in traps far from faults,

关键词： deep thermal fluid helium genetic source migration and accumulation mechanism Yinggehai Basin

鄂尔多斯盆地延长组页岩有机碳测井解释方法与应用

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石油与天然气地质 2013年第6期34卷 731-736页

作者：谢灏辰于炳松曾秋楠冯子齐中国地质大学地球科学与资源学院北京100083

富有机质页岩中有机质含量是资源潜力评价的重要参数。为了获取研究区未取心井富有机质页岩有机碳含量,试图通过测井解释方法,建立研究区目的层位关于有机碳含量(TOC)的数学模型。通过对研究区20口井延长组岩心TOC测试结果与相应测井参... 详细信息

富有机质页岩中有机质含量是资源潜力评价的重要参数。为了获取研究区未取心井富有机质页岩有机碳含量,试图通过测井解释方法,建立研究区目的层位关于有机碳含量(TOC)的数学模型。通过对研究区20口井延长组岩心TOC测试结果与相应测井参数相关性分析,发现岩心实测TOC值与自然伽马和电阻率的对数呈现较好的正相关性,但与声波时差相关性不明显。据此,利用多元统计方法,建立研究区关于自然伽马和电阻率的对数解释延长组富有机质页岩TOC含量的数学模型。根据柳评177井TOC测井解释结果与实测TOC误差分析结果,该测井解释模型误差均值为5.35%。利用上述数学模型,对研究区46口未取心井延长组富有机质页岩TOC进行计算,并结合20口取心井的测试结果,分析研究区延长组富有机质页岩TOC空间分布特征。上述TOC分布结果与沉积微相的变化趋势具有良好的吻合性,从侧面表明文中建立的有机碳测井解释模型的可靠性和有效性。

关键词：电阻率自然伽马测井解释模型有机碳含量页岩气鄂尔多斯盆地

四川盆地中二叠统栖霞组与茅口组烃源岩的差异性

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天然气工业 2016年第12期36卷 26-34页

作者：黄士鹏江青春汪泽成苏旺冯庆付冯子齐中国石油勘探开发研究院

四川盆地中二叠统栖霞组和茅口组都具有良好的油气勘探前景,目前对这2套烃源岩的横向和纵向分布特征还鲜有报道。为此,通过对17口井111块栖霞组和茅口组岩心样品实测总有机碳含量(TOC)的标定,运用分段平均值法,建立了自然伽马测井曲线... 详细信息

四川盆地中二叠统栖霞组和茅口组都具有良好的油气勘探前景,目前对这2套烃源岩的横向和纵向分布特征还鲜有报道。为此,通过对17口井111块栖霞组和茅口组岩心样品实测总有机碳含量(TOC)的标定,运用分段平均值法,建立了自然伽马测井曲线与烃源岩TOC的关系式,利用该关系式对全盆地117口井的上述2套烃源岩TOC进行了测井评价。结果表明:(1)横向上,栖霞组和茅口组烃源岩在全盆地均有分布,发育以川东地区为最好;(2)茅口组烃源岩在平面厚度、有机碳含量及生气强度等方面均优于栖霞组,前者厚度介于30~220 m,TOC介于0.5%~3.0%,为中等—好烃源岩,而后者厚度介于10~70 m,TOC介于0.5%~2.0%,为差—中等烃源岩;(3)纵向上,栖霞组烃源岩主要分布在栖一段,茅口组烃源岩主要发育于茅一段和茅二c层。结论认为:(1)栖霞组生气强度很低,绝大部分地区小于10×10~8 m^3/km^2;(2)而茅口组生气强度则明显较高,为10×10~8~60×10~8 m^3/km^2且大部分区域都大于20×10~8 m^3/km^2;(3)后者具备形成大型气田的物质基础。

关键词：四川盆地中二叠世栖霞组茅口组烃源岩平面展布有机质丰度差异性测井评价生气强度

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毫米波无线通信中的定时跟踪方案

清华大学学报（自然科学版） 2017年第1期57卷 61-66页

作者：牛勇冯子奇李勇金德鹏苏厉北京交通大学轨道交通控制与安全国家重点实验室北京100044 清华大学电子工程系信息技术国家实验室(筹)北京100084

为了解决毫米波无线通信中模数转换器(analog to digital converter,ADC)无法在接收信号上实现高倍的过采样以及多径影响所导致的定时跟踪问题,该文基于2倍过采样数据,根据相关波形,利用Farrow插值给出2种适用于多径信道的定时跟踪方案... 详细信息

为了解决毫米波无线通信中模数转换器(analog to digital converter,ADC)无法在接收信号上实现高倍的过采样以及多径影响所导致的定时跟踪问题,该文基于2倍过采样数据,根据相关波形,利用Farrow插值给出2种适用于多径信道的定时跟踪方案,分别在频域均衡之前和之后进行误差精补偿。仿真结果表明:在Rummler信道下,定时频偏为时钟频率的20×10^(-6)、误比特率为10^(-5)时,这2种方案的信噪比(signal-to-noise ratio,SNR)与无定时频偏时的只相差2.5dB左右,说明这2种方案在多径信道下具有良好的定时跟踪性能。

关键词：毫米波无线通信 E-频段多径信道定时跟踪方法频域均衡

物联网环境下的农产品安全可追溯监管体系研究

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科技管理研究 2016年第14期36卷 152-159页

作者：颜波王欣妮冯子祺华南理工大学经济与贸易学院广东广州510006

基于现有的文献基础和管理制度,结合物联网技术作支撑手段,建立物联网环境下的农产品安全无缝监管、农产品质量安全可追溯体系、农产品召回制度和农产品信息公开披露体系,从而构建基于物联网的最严格覆盖全过程的农产品安全可追溯监管... 详细信息

基于现有的文献基础和管理制度,结合物联网技术作支撑手段,建立物联网环境下的农产品安全无缝监管、农产品质量安全可追溯体系、农产品召回制度和农产品信息公开披露体系,从而构建基于物联网的最严格覆盖全过程的农产品安全可追溯监管体系。通过对农产品安全追溯管理,有效解决问题农产品的追根溯源,同时也增强企业的主体责任。

关键词：物联网技术农产品安全监管体系

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四川盆地长宁地区志留系页岩气碳同位素组成

石油勘探与开发 2016年第5期43卷 705-713页

作者：冯子齐刘丹黄士鹏吴伟董大忠彭威龙韩文学中国石油勘探开发研究院中国石油西南油气田公司勘探开发研究院

为了研究四川盆地长宁地区志留系龙马溪组页岩气碳同位素组成特征,以及该区过成熟页岩气碳同位素组成倒转成因,对长宁地区15个页岩气样的地球化学特征进行综合分析。通过测试烷烃气组分和碳同位素组成,结合四川盆地涪陵和威远地区龙马... 详细信息

为了研究四川盆地长宁地区志留系龙马溪组页岩气碳同位素组成特征,以及该区过成熟页岩气碳同位素组成倒转成因,对长宁地区15个页岩气样的地球化学特征进行综合分析。通过测试烷烃气组分和碳同位素组成,结合四川盆地涪陵和威远地区龙马溪组页岩气碳同位素组成研究,长宁地区龙马溪组页岩气CH4含量为97.11%~99.45%,湿度平均为0.49%,δ13C1值异常重,平均可达-28.2‰,δ13C2平均为-33.2‰,气源母质为腐泥型,属于油型干气。随热演化程度增加,页岩气湿度逐渐降低,甲烷碳同位素组成整体变重,乙烷和丙烷碳同位素组成会发生反转,但长宁地区过成熟页岩气的乙烷和丙烷碳同位素组成处于反转后阶段,不会持续变重。综上,长宁地区页岩气甲烷碳同位素组成的重异常、碳同位素（δ13C1〉δ13C2〉δ13C3）的完全倒转现象,主要由过成熟阶段的二次裂解效应及乙烷瑞利分馏条件下与水、含铁金属发生反应等次生作用所导致,高地温条件也是重要影响因素之一。

关键词：四川盆地长宁地区志留系龙马溪组页岩气碳同位素组成

川南宁西地区龙一段高密度甲烷包裹体发育特征及地质意义

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地球科学 2021年第9期46卷 3157-3171页

作者：柳卓郝芳刘鑫吴伟全力田金强冯子齐中国石油大学地球科学与技术学院山东青岛266580 中国石油大学深层油气重点实验室山东青岛266580 中国石油西南油气田公司四川成都610051 中国石油西南油气田公司页岩气研究院四川成都610051

作为川南志留系页岩气重点拓展区,宁西地区经历多次断裂活动,龙一段普遍发育方解石脉体,同时由于热演化程度极高,出现石墨化现象,致使页岩气富集规律不明.本次研究以区内重点探井——宁西202井的龙一段为研究对象,通过系统岩心描述、薄... 详细信息

作为川南志留系页岩气重点拓展区,宁西地区经历多次断裂活动,龙一段普遍发育方解石脉体,同时由于热演化程度极高,出现石墨化现象,致使页岩气富集规律不明.本次研究以区内重点探井——宁西202井的龙一段为研究对象,通过系统岩心描述、薄片镜下观察、阴极发光、激光拉曼光谱和显微测温等实验分析,进行了古温压恢复研究.研究表明:龙一段主体分布高角度方解石脉体(A类),局部发育顺层脉体(B类).A类脉体中主要发育高密度甲烷包裹体、部分样品出现特殊的沥青包裹体.沥青包裹体中沥青的拉曼R(o RmcRo)为3.52%~4.16%,处于过成熟至石墨化阶段.甲烷拉曼散射峰介于2910.7112~2912.4951 cm^(‒1),均一温度介于-99.8~-96.3℃.通过拉曼参数位移法和显微测温法分析得出的密度值分别介于0.2536~0.3445 g/cm^(3)和0.2916~0.3032 g/cm^(3),呈典型的高密度特征.综上,高密度甲烷包裹体可能捕获于燕山构造运动抬升初期,处于超压状态,指示页岩系统封闭性较好,有利于页岩气的富集.

关键词：宁西地区龙一段方解石脉体高密度甲烷包裹体沥青包裹体石油地质