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Early-Middle Paleozoic Andes-type Continental Margin in the Chifeng Area, Inner Mongolia: Framework, Geochronology and Geochemistry and Implications for Tectonic Evolution of the Central Asian Orogenic Belt

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Acta Geologica Sinica(English Edition) 2020年第1期94卷 57-74页

作者： YAN Linjie XU Bei ZHANG jiaming WANG Yanyang Key Laboratory of Orogenic Belts and Evolution Peking UniversityBeijing 100871China Key Laboratory of Regional Geology and Mineralization Hebei GEO UniversityShijiazhuang 050031China

Three tectonic units have been recognized in the Chifeng area, Inner Mongolia, from north to south, including the Qiganmiao accretionary prism, Jiefangyingzi arc belt and Sidaozhangpeng molasse basin, which formed an Andeantype active continent margin during the early to middle Paleozoic. The Qiganmiao accretionary prism is characterized by a mélange that consists of gabbro, two-mica quartz schist and basic volcanic rock blocks and heterogeneously deformed marble matrix. Two zircon U-Pb ages of 446.0±6.3 Ma and 1104±27 Ma have been acquired and been interpreted as the metamorphic and forming ages for the gabbro and two-mica quartz schist, respectively. The prism formed during the early to middle Paleozoic southward subduction of the Paleo Asian Ocean(PAO) and represents a suture between the North China craton(NCC) and Central Asian Orogenic Belt(CAOB). The Jiefangyingzi arc belt consists of pluton complex and volcanic rocks of the Xibiehe and Badangshan Formations, and Geochronology analysis indicates that the development of it can be divided into two stages. The first stage is represented by the Xibiehe Formation volcanic rocks, which belong to the subalkaline series, enriched LREE and LILE and depleted HFSE, with negative Eu anomalies, and plot in the volcanic arc field in discrimination diagrams. These characters indicate that the Xibiehe Formation results from to the continental arc magmatic activity related to the subduction of the PAO during 400–420 Ma. Magmatism of the second stage in 380–390 Ma consists of the Badangshan Formation volcanic rocks. Geochemistry analysis reveals that rhyolite, basaltic andesite and basalt of the Badangshan Formation were developed in continental margin arc setting. Moreover, the basaltic andesite and basalt display positive Sr anomalies, and the basalt have very low Nb/La values, suggesting that fluid is involved in magma evolution and the basalts were contaminated by continental crust. The sequence of Sidaozhangpeng molasse ba

关键词： Chifeng area andes-type continental margin early-middle paleozoic tectonic evolution Central Asian Orogenic Belt

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光电稳定平台的分数阶降阶自抗扰控制设计

电光与控制 2025年第1期32卷 95-99页

作者：陈旭邸宏伟林国余陈佳明南京信息工程大学自动化学院南京210000 南京信息工程大学江苏省大气环境与装备技术协同创新中心南京210000 南京智真电子科技股份有限公司南京210000

为了提高光电稳定平台的动态性能与抗干扰能力,提出一种分数阶降阶自抗扰控制(FO-RADRC)算法。首先,利用系统输出信号的可测性和可靠性,采用降阶线性扩张状态观测器,提高观测效率和精度;然后,采用分数阶PD(FOPD)作为控制律,从而增强系... 详细信息

为了提高光电稳定平台的动态性能与抗干扰能力,提出一种分数阶降阶自抗扰控制(FO-RADRC)算法。首先,利用系统输出信号的可测性和可靠性,采用降阶线性扩张状态观测器,提高观测效率和精度;然后,采用分数阶PD(FOPD)作为控制律,从而增强系统的稳定性和控制性能。通过数值仿真实验,与线性自抗扰算法和降阶线性自抗扰算法进行了对比分析。结果表明,所提算法在动态性能指标上均优于对比算法,且在不同频率的等效扰动作用下具有更强的扰动抑制能力。这些结果验证了所提改进算法在提升光电稳定平台控制效果方面的有效性和创新性。

关键词：光电稳定平台分数阶控制自抗扰控制降阶线性扩张状态观测器

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Antioxidant effects of the orientin and vitexin in Trollius chinensis Bunge in D-galactose-aged mice

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Neural Regeneration Research 2012年第33期7卷 2565-2575页

作者： Fang An Guodong Yang jiaming Tian Shuhua Wang College of Pharmacy Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina

Total flavonoids are the main pharmaceutical components of Trollius chinensis Bunge, and orientin and vitexin are the monomer components of total flavonoids in Trollius chinensis Bunge. In this study, an aged mouse model was established through intraperitoneal injection of D-galactose for 8 weeks, followed by treatment with 40, 20, or 10 mg/kg orientin, vitexin, or a positive control （vitamin E） via intragastric administration for an additional 8 weeks. Orientin, vitexin, and vitamin E improved the general medical status of the aging mice and significantly increased their brain weights. They also produced an obvious rise in total antioxidant capacity, superoxide dismutase, catalase, and glutathione peroxidase levels in the serum, and the levels of superoxide dismutase, catalase and glutathione peroxidase, Na＋-K＋-ATP enzyme, and Ca2＋-Mg2＋-ATP enzyme in the liver, brain and kidneys. In addition, they significantly reduced malondialdehyde levels in the liver, brain and kidney and lipofuscin levels in the brain. They also significantly improved the neuronal ultrastructure. The 40 mg/kg dose of orientin and vitexin had the same antioxidant capacity as vitamin E. These experimental findings indicate that orientin and vitexin engender anti-aging effects through their antioxidant capacities.

关键词： Trollius chinesis Bunge orientin vitexin total flavonoids in Trollius

Tolerance and safety evaluation of sodium sulfate:A subchronic study in laying hens

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Animal Nutrition 2021年第2期7卷 576-586页

作者： Bing Liu jiaming Zhu Qin Zhou Dongyou Yu College of Animal Sciences Zhejiang UniversityHangzhou310058China State Key Laboratory of Food Science and Technology and Synergetic Innovation Center of Food Safety and NutritionJiangnan UniversityWuxi214122China

Sodium sulfate(Na2SO4)is a readily available chlorine-free source of sodium,which could be used to reduce sodium chloride to maintain the ratio between chlorine and sodium in poultry *** supplementation with excessive levels of Na2SO4 might be detrimental to bird's health and per-formance.A subchronic study was carried out to investigate the potential adverse effects of an accidental oversupply of Na2SO4 in the diets of laying *** hundred and fifty 21-week-old Hy-Line White layers were randomly assigned to 5 treatments with 6 *** birds were fed diets supplemented with 0(control),0.3%,0.6%,1.5%,and 3.0%Na2SO4 for 8 *** perfor-mance,egg quality parameters,clinical blood parameters,histopathology,intestinal barrier func-tions,and intestinal microflora composition were *** clinical signs of intoxication or mortality were observed during the experimental *** results of this study showed that the optimal levels of Na2SO4(0.3%to 0.6%)significantly improved the laying rates,average daily egg mass,and eggshell quality of hens compared to the control(P<0.05).However,3.0%Na2SO4 produced negative effects on laying performance,eggshell quality,blood biochemistry,and partic-ularly on liver and kidney pathology,and intestinal morphology and barrier functions compared with the *** minor changes were observed in clinical blood parameters of hens receiving 1.5%Na2SO4,these were not considered to be of toxicological significance due to the absence of any organ pathological changes in *** conclusion,our results indicated that a Na2SO4 concentration of 1.5%was non-deleterious to laying hens after a daily administration for 56 d,namely that dietary supplementation of up to 5 times the maximum recommended dose is safely tolerated by laying hens.

关键词： Sodium sulfate Tolerance Histopathology Intestinal function Laying hen

荧光腹腔镜保留十二指肠胰头切除术2例报告并文献复习(附手术视频)

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福建医药杂志 2021年第3期43卷 29-32页

作者：黄文涛游燊陈毅凌洪嘉明陈实田毅峰王耀东赖智德福建医科大学省立临床医学院福建省立医院肝胆胰外科福州350001

目的总结2例荧光腹腔镜保留十二指肠胰头切除术(FLDPPHR)的手术经验,并结合文献,分析FLD-PPHR的优势、发展现状.方法回顾性分析我科施行的2例FLDPPHR病例的临床资料,并进行相关文献复习.结果2例FLDPPHR均顺利完成,无中转手术.手术时间... 详细信息

目的总结2例荧光腹腔镜保留十二指肠胰头切除术(FLDPPHR)的手术经验,并结合文献,分析FLD-PPHR的优势、发展现状.方法回顾性分析我科施行的2例FLDPPHR病例的临床资料,并进行相关文献复习.结果2例FLDPPHR均顺利完成,无中转手术.手术时间和术中出血量分别为450min、300mL和473min、400mL.吲哚菁绿荧光显像技术(ICG-FI)有助于术中对胆总管的实时显露.术后住院时间分别为14d、39d.术后病理诊断分别为胰管结石伴慢性胰腺炎和胰腺实性-假乳头状瘤.术后1例发生胆瘘,因远端胆管狭窄行胆肠吻合术;另1例发生B级胰瘘、胆瘘、少量的腹腔出血,因远端胆管狭窄行胆肠吻合术.结论在FLDPPHR中,ICG-FI是有价值的实时导航方法,有助于胆总管的暴露和保护,也可以作为胆瘘的检查手段.

关键词：荧光腹腔镜保留十二指肠胰头切除术吲哚菁绿胆道并发症

Improving the resistance of the rice PTGMS line Feng39S by pyramiding blast,bacterial blight,and brown planthopper resistance genes

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The Crop Journal 2022年第4期10卷 1187-1197页

作者： Dabing Yang Lizhong Xiong Tongmin Mou jiaming Mi National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research(Wuhan) Huazhong Agricultural UniversityWuhan 430070HubeiChina

Knowledge of rice(Oryza sativa L.)genes and various DNA markers can be used in genomic breeding programs aimed at developing improved elite rice *** used an efficient genomic breeding approach to pyramid four resistance genes(Pi2,Xa23,Bph14,and Bph15)in the popular photoperiod-and thermosensitive genic male sterile(PTGMS)rice line *** performed foreground selection for the target genes,followed by recombinant selection and background *** process reduced the sizes of the genomic segments harboring the target genes(566.8 kb for Pi2,1143.9 kb for Xa23,774.7 kb for Bph14,and 1574.9 kb for Bph15)and accelerated the recovery of the recurrent parent genome to proportions ranging from 98.77%to 99.16%,thus resulting in four near-isogenic *** assemble the four resistance genes in Feng39S,we performed a double-way cross combined with foreground and background selection to generate two improved lines of Feng39S(Pi2+Xa23+Bph14+Bph15)with a recurrent parent genome recovery of 98.98%.The two lines showed agronomic performance,grain quality,and fertility–sterility transition characteristics similar to those of the original Feng39S *** newly developed PTGMS lines and corresponding hybrid combinations were resistant to various field blast isolates and seven representative isolates of bacterial *** the seedling stage,the lines also showed resistance against brown *** study provides an efficient and accurate genomic breeding approach for introducing desirable traits into PTGMS lines.

关键词： Bacterial blight resistance Blast resistance Brown planthopper resistance Genomic breeding PTGMS line Two-line hybrid rice

Passive attitude stabilization of ionic-wind-powered micro air vehicles

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Chinese Journal of Aeronautics 2023年第7期36卷 412-419页

作者： Hengyu ZHANG jiaming LENG Zhiwei LIU Mingjing QI Xiaojun YAN School of Energy and Power Engineering Beihang UniversityBeijing 100191China

The ionic-wind-powered Micro Air Vehicles(MAVs)can achieve a higher thrust-toweight ratio than other ***,this kind of MAV has not yet achieved controlled flight because of the unstable thrust produced by the ionic wind and the dynamic instability related to the small *** this paper,a passive attitude stabilization method of the ionic-wind-powered MAV using air dampers is *** key factors that influence the performance of the air dampers,including the layout,position,and area of the air dampers,are theoretically *** appropriate optimal position of the air dampers is also obtained by Monte Carlo stochastic *** the proposed passive attitude stabilization method is applied to the ionic-wind-powered MAVs of different wingspan(2 cm and 6.3 cm).Finally,the experimental results show that using the proposed method,attitude stabilization is achieved for the first time for the ionic-wind-powered ***,the altitude control of an ionic-wind-powered MAV with a wingspan of 6.3 cm is also demonstrated.

关键词： Air dampers Altitude control Ionic wind propulsion Micro air vehicle Monte Carlo methods Stability

Flow Control Effect of Spanwise Distributed Pulsed Arc Discharge Plasma Actuation on Supersonic Compressor Cascade Flow

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Journal of Thermal Science 2022年第5期31卷 1723-1733页

作者： SHENG jiaming WU Yun ZHANG Haideng WANG Yizhou TANG Mengxiao Science and Technology on Plasma Dynamic Laboratory Air Force Engineering UniversityXi’an710038China Institute of Aero-engine School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an710049China

To achieve efficient control of supersonic compressor cascade flow,a type of spanwise distributed pulsed arc discharge plasma actuation(PADPA)was *** simulate the influences of PADPA on the flow field,a phenomenological model was ***,the flow control effects of PADPA on supersonic compressor cascade flow were researched *** results show that under low static pressure ratio condition,the compressive wave induced by PADPA reduced the intensity of the passage shock wave,which eventually reduced shock wave *** was also found that PADPA produced an adverse pressure gradient(pre-compression effect)around the actuation location,which reduced the strength of the high adverse pressure gradient induced by the passage shock *** airflow on both sides of the actuation location was accelerated by PADPA owing to the spanwise distributed ***,it improved the ability of the boundary layer to resist the effect of the adverse pressure gradient and reduced the separation ***,the total pressure loss was reduced by 6.8%.Under high pressure ratio condition,the effect of PADPA on the suction side controlling the large separation of the boundary layer was *** total pressure loss also increased slightly.

关键词： plasma flow control supersonic cascade shock wave/boundary layer interaction numerical simulation

Effect of Al content on the reaction between Fe-10Mn-xAl(x=0.035wt%,0.5wt%,1wt%,and 2wt%)steel and CaO-SiO_(2)-Al_(2)O_(3)-MgO slag

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 256-262页

作者： Huixiang Yu Dexin Yang jiaming Zhang Guangyuan Qiu Ni Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The effect of Al content(0.035 wt%,0.5 wt%,1 wt%,and 2 wt%)on the composition change of steel and slag as well as inclusion transformation of high manganese steel after it has equilibrated with Ca O-Si O_(2)-Al_(2)O_(3)-Mg O slag was studied using the method of slag/steel *** experimental results showed that as the initial content of Al increased from 0.035 wt%to 2 wt%,Al gradually replaced Mn to react with Si O_(2)in slag to avoid the loss of Mn due to the reaction;this process caused both Al_(2)O_(3)in slag and Si in steel to increase while Si O_(2)and Mn O in slag to *** addition,the type of inclusions also evolved as the initial Al content *** evolution route of inclusions was Mn O→Mn O-Al_(2)O_(3)-Mg O→Mg O→Mn O-Ca O-Al_(2)O_(3)-Mg O and Mn O-Ca O-Mg *** shape of inclusions evolved from spherical to irregular,became faceted,and finally transformed to *** average size of inclusions presented a trend that was increasing first and then *** transformation mechanism of inclusions was *** the initial content of Al increased,Mg and Ca were reduced from top slag into molten steel in sequence,which consequently caused the transformation of inclusions.

关键词： medium/high manganese steel Al content steel composition slag composition non-metallic inclusion slag/steel reaction