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CSEE Journal of Power and Energy Systems 2024年第1期10卷 235-247页

作者： Zexin zhao Weijiang Chen Zhichang Yang guoliang zhao Bin Han Yunfei Xu Nianwen Xiang Shulai Wang China Electric Power Research Institute Beijing 100192China State Grid Corporation of China Beijing 100031China State Grid Smart Grid Research Institute Beijing 102209China State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research InstituteBeijing 102211China Hefei University of Technology Hefei 230009China

The modular multilevel matrix converter(M3C)is a potential frequency converter for low-frequency AC ***,capacitor voltage control of high-voltage and largecapacity M3C is more difficult,especially for voltage balancing between *** solve this problem,this paper defines sequence circulating components and theoretically analyzes the influence mechanism of different sequence circulating components on branch capacitor voltage.A fully decoupled branch energy balancing control method based on four groups of sequence circulating components is *** method can control capacitor voltages of nine branches in horizontal,vertical and diagonal *** influences of both circulating current and voltage,a cross decoupled control is designed to improve control *** results are taken from a low-frequency transmission system based on PSCAD/EMTDC,and effectiveness and precision of the proposed branch energy balancing control method are verified in the case of nonuniform parameters and an unbalanced power system.

关键词： Branch energy balancing control decoupled control low-frequency AC transmission modular multilevel matrix converter(M3C) sequence circulating components

Geochronology,Geochemistry,and Sr-Nd-Hf Isotopes of the Diorite Porphyrites from the Weining Beishan Area,Ningxia Hui Autonomous Region:Constraints on Their Source and Tectonic Implications

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Journal of Earth Science 2024年第2期35卷 462-475页

作者： Anlu Liu Lianfu Hai Jinke Liu Xiaojun Zhang Haifeng Li Fengshun zhao guoliang zhao Jinhe Bai Yifu Museum China University of GeosciencesWuhan430074China School of Earth Resources China University of GeosciencesWuhan430074China Mineral Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China National Demonstration Center for Experimental Mineral Exploration Education China University of GeosciencesWuhan430074China Coal Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China Zhuhai Engineering Investigation Institute of Guangdong Province Zhuhai519000China

The Weining Beishan area of Ningxia Hui Autonomous Region is located at on the western edge of the Helanshan tectonic belt,which is a tectonic joint among Alxa Block,Ordos Block,and North Qilian orogenic ***,the tectonic evolution of this area remains unclear due to the lack of magmatic *** paper conducted researches on geochronology,geochemistry,and Sr-Nd-Hf isotopes of the diorite porphyrites exposed in the Weining Beishan *** zircon U-Pb dating yields two ages of 145.0±1.1 and 146.2±1.5 Ma,and the whole-rock geochemical data indicate that the diorite porphyrites are metaluminous to weakly peraluminous and high-K calc-alkaline *** characteristics of highly initial^(87)Sr/^(86)Sr ratios(0.70816 to 0.71047),negativeε_(Nd)(t)(−8.9 to−8.4),and negativeε_(Hf)(t)(−13.8 to−21.2)indicate that the diorite porphyrites originated from partial melting of the middle-lower ancient crust related to the North China *** with the regional geology,we suggested that partial melting was triggered by a tectonic activity of deep faults cutting through the crust under the regional stress transformation from compressing to extension during the Late Jurassic–Early Cretaceous,which is probably related to the westward subduction of the Paleo-Pacific Plate.

关键词： zircon U-Pb dating Sr-Nd-Hf isotopes magma source diorite porphyrite Weining Beishan area Ningxia Hui Autonomous Region geochronology geochemistry

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先进烧结技术制备高熵陶瓷的研究进展

陶瓷学报 2024年第1期45卷 32-45页

作者：何金懋赵国梁刘天伟徐晨中国工程物理研究院材料研究所四川江油621700

高熵陶瓷作为近年来发现的新型材料,因其独特的结构和高熵效应,受到了广泛关注。由于高熵效应中的迟滞扩散效应,高熵陶瓷需要在较高温度下长时间保温才能充分致密,制备周期长、耗费能源大。随着先进烧结技术的发展,一些学者采用闪烧、... 详细信息

高熵陶瓷作为近年来发现的新型材料,因其独特的结构和高熵效应,受到了广泛关注。由于高熵效应中的迟滞扩散效应,高熵陶瓷需要在较高温度下长时间保温才能充分致密,制备周期长、耗费能源大。随着先进烧结技术的发展,一些学者采用闪烧、放电等离子烧结和超快高温烧结等先进技术制备高熵陶瓷,在缩短烧结周期和降低烧结温度方面取得了较多成果。对先进烧结技术制备高熵陶瓷的研究进展进行了分析归纳,探讨了不同烧结技术的原理、特点、优势和发展前景,并对未来高熵陶瓷烧结方法的研究方向进行了展望。

关键词：高熵陶瓷先进烧结技术闪烧放电等离子烧结超快高温烧结

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巩膜固定囊袋张力环联合超声乳化人工晶状体植入术治疗外伤性晶状体半脱位

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国际眼科杂志 2024年第6期24卷 975-979页

作者：马刚刘玉强赵国良付梦军潍坊眼科医院、国家临床重点专科、潍坊市眼科研究所、正大光明眼科集团山东省潍坊市261000 温州医科大学浙江省温州市325027

目的:探讨巩膜固定囊袋张力环(SFCTR)植入联合晶状体超声乳化吸除加人工晶状体(IOL)植入术治疗外伤性晶状体半脱位的临床疗效。方法:连续选取2018-12/2023-02行SFCTR植入联合晶状体超声乳化吸除加IOL植入术治疗的外伤性晶状体半脱位患... 详细信息

目的:探讨巩膜固定囊袋张力环(SFCTR)植入联合晶状体超声乳化吸除加人工晶状体(IOL)植入术治疗外伤性晶状体半脱位的临床疗效。方法:连续选取2018-12/2023-02行SFCTR植入联合晶状体超声乳化吸除加IOL植入术治疗的外伤性晶状体半脱位患者14例14眼。术后随访行视力、眼压、眼前段照相、超声生物显微镜(UBM)等检查,并记录IOL的位置及术后并发症等情况。结果:纳入患者均成功植入SFCTR和囊袋内IOL。术后平均随访1.92±1.36 a,末次随访时,UDVA(0.20±0.18 LogMAR)和CDVA(0.16±0.17 LogMAR)均较术前UDVA(1.13±0.56 LogMAR)显著改善(P<0.01),眼压(17.64±3.67 mmHg)较术前(22.00±9.92 mmHg)降低(P<0.05)。随访期间,裂隙灯检查见IOL位于囊袋内,位置居中;UBM检查见CTR和IOL位于囊袋内,囊袋赤道部与睫状突的距离在各个方向相等。结论:SFCTR植入联合晶状体超声乳化吸除加IOL植入术是治疗外伤性晶状体半脱位的一种微创有效的手术方法。

关键词：超声乳化囊袋张力环晶状体脱位人工晶状体超声生物显微镜

高速公路收费站运营期碳排放核算研究——以浮山北近零碳收费站为例

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山西交通科技 2024年第4期 104-107页

作者：赵国梁秦敏山西交控临浮高速公路有限公司山西临汾041000 山西省交通环境保护中心站(有限公司) 山西太原030032

基于生命周期理论中的清单分析,根据高速公路运营过程中的能源活动工作分类及植被的碳汇功能划分了核算体系边界,对2023年浮山北收费站采暖、空调、照明、厨房、生活热水、ETC收费系统等直接和间接碳排放量采用IPCC中的排放因子法进行核... 详细信息

基于生命周期理论中的清单分析,根据高速公路运营过程中的能源活动工作分类及植被的碳汇功能划分了核算体系边界,对2023年浮山北收费站采暖、空调、照明、厨房、生活热水、ETC收费系统等直接和间接碳排放量采用IPCC中的排放因子法进行核算,并对碳排放变化情况和产生碳排放的不同类别能源消耗情况进行研究分析,对站区光伏发电情况进行统计汇总,进行碳减排量核算,最后通过分析影响站区碳排放量,提出碳减排的路径,为高速公路运营期节能减排绩效评价提供理论基础。

关键词：高速公路运营期碳排放碳核算近零碳

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麸曲制作工艺优化及对黄酒品质的影响

食品工业科技 2024年第21期45卷 148-156页

作者：修禹旸赵国良李志江毛健黑龙江八一农垦大学食品学院黑龙江大庆163319 黑龙江省杂粮加工及质量安全工程技术研究中心黑龙江大庆163319 江南大学食品学院粮食发酵与食品生物制造国家工程研究中心江苏无锡214122 江南大学（绍兴）产业技术研究院浙江绍兴312000

为明确麸皮种类和固态发酵条件对接种青霉菌Penicillium oxalicum M1816麸曲的酶活力影响，将酶活力最高条件下的麸曲应用于黄酒生产，评价了其对黄酒酚类物质含量、理化及感官指标的影响。结果表明，当麸皮直径20目时，麸曲的酶活力表... 详细信息

为明确麸皮种类和固态发酵条件对接种青霉菌Penicillium oxalicum M1816麸曲的酶活力影响，将酶活力最高条件下的麸曲应用于黄酒生产，评价了其对黄酒酚类物质含量、理化及感官指标的影响。结果表明，当麸皮直径20目时，麸曲的酶活力表现为玉米麸皮>小麦麸皮>燕麦麸皮>黑麦麸皮。选择玉米麸皮制作麸曲，酶活力最高的制曲条件为：冰醋酸调节培养基pH为6.5，麸曲初始含水量为85%（V/W），培养温度为30 ℃，培养时间为120 h。与工厂黄酒相比，添加玉米麸曲生产的玉米麸曲黄酒中酚酸总量为116.48 mg/L，相比对照组（55.53 mg/L）提高了约1.1倍，挥发性酚类化合物4-乙基苯酚、4-乙基愈创木酚、4-乙烯基愈创木酚、愈创木酚和香兰素均显著增加（P<0.05），黄酒药香明显增强，理化指标均符合黄酒国家标准。本研究明确了利用青霉菌制备玉米麸曲的最佳工艺条件，玉米麸曲可有效提高玉米麸曲黄酒酚酸类物质含量，为具有药香气特征且富含酚类物质的黄酒酿制提供了技术参考。

关键词：黄酒谷物麸皮固态发酵酚酸青霉菌感官评价

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A Three-phase Integrated Power Electronic Transformer with the Capability of DC Fault Clearance

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CSEE Journal of Power and Energy Systems 2021年第4期7卷 785-796页

作者： Yunfei Xu Guangfu Tang Weiguo Li guoliang zhao Zhanfeng Deng State Key Laboratory of Advanced Transmission Technology(Global Electricity Interconnection Research Institute Co.Ltd.) Changping DistrictBeijing 102211China

This paper presents a three-phase integrated power electronic transformer(PET)topology with the capability of DC fault clearance based on the investigation of PET *** proposed PET has three ports of high-voltage AC,high-voltage DC and low-voltage DC,which can achieve the flexible access of distributed energy resources・The power unit of the PET adopts a three-phase integrated topology,and the single-phase fluctuating power in the DC-link capacitor is reduced by a 4-port DC/DC converter,thereby reducing the capacitance of the DC-link capacitor;Meanwhile,the power unit uses the clamp double sub-module(CDSM)to allow for self-clearing of the short-circuit fault on the high-voltage DC ***,this paper verifies the proposed PET through an EMT simulation and experimental prototype.

关键词： DC fault clearing experimental verification power electronic transformer three phase integration

A series of novel Zn(Ⅱ) and Mn(Ⅱ) metal-organic frameworks constructed by 2,4-bis-oxyacetate-benzoic acid: syntheses, structures and photoluminescence

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Science China Chemistry 2015年第3期58卷 448-456页

作者： Yan Lv Pei Shi Wei Shen Xiaoju Chen guoliang zhao College of Chemistry and Life Science Zhejiang Normal University Xingzhi College Zhejiang Normal University

A new carboxylic acid ligand, 2,4-bis-oxyacetate-benzoic acid(H3BOABA), was designed and introduced to construct novel metal-organic framework materials. [Zn Na(BOABA)(phen)(H2O)]·H2O(1), Zn Na(BOABA)(2), Mn3(BOABA)2(phen)2(3), [Mn2(BOABA)(OH)]·(H2O)2(4)(CCDC: 885138, 885137, 894225, 883094) were hydrothermally synthesized and characterized by elemental analysis, IR spectra and thermal gravimetric analyses. Crystal structures of the complexes were determined by single crystal X-ray diffraction method. Complex 1 is a one dimensional double edges non-interpenetrated framework decorated by the phen ligands on the surface. Complex 2 is an unique three dimensional open framework, consisting of Zn(II) and Na(I). Complex 3 is an unique double edges one dimensional MOF containing a [Mn3(BOABA)2(phen)2]n non-interpenetrated structure. Complex 4 is a two dimensional plane structure containing two Mn atoms in the same coordination environment. The interaction between four complexes and DNA were studied by Et Br fluorescence probe. Meanwhile, photoluminescence studies revealed that these four complexes display strong fluorescent emission bands in the solid state at room temperature.

关键词： Zn and Mn complexes 2 4-bis-oxyacetate-benzoic acid crystal structure DNA binding photoluminescence

Antimicrobial, anticancer and DNA binding studies of transition metal(Ⅱ)complexes containing 2-phenyl-4-selenazole carboxylic acid

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Science China Chemistry 2013年第5期56卷 588-594页

作者： GUAN QuanYin SHI Xia SHEN JinBei zhao guoliang College of Chemistry and Life Sciences Zhejiang Normal University Zhejiang Normal University Xingzhi College

Three novel transition metal complexes [ML2（phen）]＇H20 （M= Mn, Co, Zn; HL= C10H702NSe, 2-phenyl-4-selenazole carboxylic acid, phen= 1,10-phenanthroline） 1-3 were synthesized and characterized by elemental analysis, IR spectra. Their crystal structures were deterimined by single-crystal X-ray diffraction method. The antibacterial activities of the complexes against five species of bacteria, Escherichia coli （E. coli）, Staphylococcus epidermidis （S. epidermidis）, Staphylococcus aureus （S. au- reus）, Acinetobacter baumanii （A. baumanii） and Streptococcus viridans （S. viridans）, were tested respectively. The anticancer activities of the complexes against human pancreatic cancer line PANC-28 and human hepatocarcinoma line HuH7 were also studied. The interactions between the complexes and DNA were studied by ethidium bromide （EB） fluorescent probe.

关键词： 2-phenyl-4-selenazole carboxylic acid transition metal complex antibacterial activity anticancer activity DNA binding

再生无色聚对苯二甲酸丁二醇酯-co-碳酸丁二醇酯流变性能研究

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北京服装学院学报（自然科学版） 2024年第2期44卷 18-22,39页

作者：裴婷婷梁日辉卜雯玥杨中开赵国樑北京服装学院材料设计与工程学院北京100029

有色废旧聚酯纺织品经乙二醇(EG)醇解后,与甲醇(MeOH)酯交换并脱色提纯,得到无色对苯二甲酸二甲酯(DMT);DMT再与1,4-丁二醇(BDO)酯交换得到无色对苯二甲酸双羟基丁二醇酯(BHBT);BHBT与碳酸二甲酯(DMC)和BDO酯交换,得到双甲基碳酸丁二醇... 详细信息

有色废旧聚酯纺织品经乙二醇(EG)醇解后,与甲醇(MeOH)酯交换并脱色提纯,得到无色对苯二甲酸二甲酯(DMT);DMT再与1,4-丁二醇(BDO)酯交换得到无色对苯二甲酸双羟基丁二醇酯(BHBT);BHBT与碳酸二甲酯(DMC)和BDO酯交换,得到双甲基碳酸丁二醇酯(BMBC),通过缩聚反应制备出再生无色聚对苯二甲酸丁二醇酯-co-碳酸丁二酯(clr-PBCT)共聚酯。采用毛细管流变仪分别对clr-PBCT60和clr-PBCT70的熔融流变性能进行了测试。结果表明:2种clr-PBCT共聚酯的熔体呈现剪切变稀现象,具有非牛顿流体的流动特征;当剪切速率小于1100 s^(-1)时,clr-PBCT60的可纺性要优于clr-PBCT70;二者的非牛顿指数n均小于1,且随着测试温度的提高而增大;其粘流活化能(ΔE_(η))则随剪切速率的增加而减小,且clr-PBCT60共聚酯的ΔE_(η)明显低于clr-PBCT70;当剪切速率小于1100 s^(-1)时,clr-PBCT60样品熔体的结构黏度指数低于clr-PBCT70样品,剪切速率增大时则相反。

关键词：废旧有色聚酯纺织品再生无色聚对苯二甲酸丁二醇酯-co-碳酸丁二醇酯流变性能粘流活化能E_(η) 结构黏度指数(Δη)