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Journal of Iron and Steel Research International 2021年第8期28卷 1030-1036页

作者： Zhe Zhu Wan-tang Fu Rong-bin Li Qi-wei Chen Ze-an Zhou Zhen-hua Wang jia-qing liu Shu-hua Sun State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004HebeiChina Shanghai Engineering Research Center of Hot Manufacturing Shanghai Dianji UniversityShanghai 201306China School of Science Yanshan UniversityQinhuangdao 066004HebeiChina

The partitioning of nitrogen atoms and its effect on the retained austenite content(RAC)during quenching and partitioning(Q&P)process were investigated by dilatometry,X-ray diffraction,and field emission transmission electron microscopy with energy-dispersive spectrometer mapping in a 00Cr13Mn8N *** partitioning by diffusion of N atoms from martensite to austenite occurred at 400℃after quenching.N atoms are enriched in austenite after partitioning,and the stability of these N-rich austenite is improved and retained at room temperature during subsequent *** different quenching temperatures(QTs)result in different phase fractions after *** the increase in QT,RAC first increases and then decreases,and the maximum RAC is 28.5 vol.%after quenching at 80℃.A mathematical model was developed to rapidly and accurately characterize the phase fraction in Q&P process based on the relative length change of the samples partitioned after quenching at different QTs.

关键词： Nitrogen partitioning Quenching and partitioning Retained austenite Energy-dispersive spectrometer mapping Dilatometry Ultra-low-carbon stainless steel

Quick determination of gas pressure before uncovering coal in cross-cuts and shafts

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Journal of China University of Mining and Technology 2008年第4期18卷 494-499页

作者： jiaNG Cheng-lin WANG Chen LI Xiao-wei CHEN Yu-jia XIE qing-xue liu Ying TANG Jun YANG Fei-long WANG Fa-kai DENG Su-hua ZHANG Chao-jie CHENG Song-li LV Shu-wen School of Safety Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

The determination of gas pressure before uncovering coal in cross-cuts and in shafts is one of the important steps in pre- dicting coal and gas outbursts. However, the time spent for testing gas pressure is, at present, very long, seriously affecting the ap- plication of outburst prediction techniques in opening coal seams in cross-cuts and shafts. In order to reduce the time needed in gas pressure tests and to improve the accuracy of tests, we analyzed the process of gas pressure tests and examined the effect of the length of boreholes in coal seams in tests. The result shows that 1) the shorter the borehole, the easier the real pressure value of gas can be obtained and 2) the main factors affecting the time spent in gas pressure tests are the length of the borehole in coal seams, the gas emission time after the borehole has been formed and the quality of the borehole-sealing. The longer the length of the bore- hole, the longer the gas emission time and the larger the pressure-relief circle formed around the borehole, the longer the time needed for pressure tests. By controlling the length of the borehole in a test case in the Huainan mining area, and adopting a quick sealing technique using a sticky liquid method, the sealing quality was clearly improved and the gas emission time as well as the amount of gas discharged greatly decreased. Before the method described, the time required for the gas pressure to increase during the pressure test process, was more than 10 days. With our new method the required time is only 5 hours. In addition, the accuracy of the gas pressure test is greatly improved.

关键词： gas pressure sticky liquid sealing quick test cross-cut shaft

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***对免疫低下合并结核性胸膜炎患者的诊断价值

实用医学杂志 2016年第18期32卷 3023-3026页

作者：贾文青刘莹郑州大学第一附属医院呼吸与危重症医学科 450052

目的:探讨结核杆菌T细胞斑点实验(***)对免疫低下合并结核性胸膜炎患者的诊断价值。方法:比较***、腺苷脱氨酶(ADA)、TB-DNA法及结核抗体检测54例免疫低下合并结核性胸膜炎患者的诊断灵敏度。其中有22例患者在抗结核治疗第2个月末复查*... 详细信息

目的:探讨结核杆菌T细胞斑点实验(***)对免疫低下合并结核性胸膜炎患者的诊断价值。方法:比较***、腺苷脱氨酶(ADA)、TB-DNA法及结核抗体检测54例免疫低下合并结核性胸膜炎患者的诊断灵敏度。其中有22例患者在抗结核治疗第2个月末复查***,比较治疗前后***斑点形成细胞数的变化。结果 :在对54例确诊为免疫低下合并结核性胸膜炎患者中,***诊断灵敏度(79.63%)显著高于ADA(64.81%)、TB-DNA(48.15%)及结核抗体(55.56%)(P0.05)。测试孔A和B斑点细胞数(SFC)较治疗前下降((t=2.728和2.400,均P<0.05)。结论 :***诊断免疫低下合并结核性胸膜炎患者具有良好的灵敏度,且对其诊断具有重要临床价值。

关键词：结核性胸膜炎免疫低下 T—SPOT.TB 诊断

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu Wang Xiao Ding Huang Yunyi Yiyu liu jia Li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

The fluorescein sodium tumor staining and intraoperative direct third ventriculostomy in the management of posterior third ventricular tumor with hydrocephalus

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The fluorescein sodium tumor staining and intraoperative dir...

The regulation of KCNQ2/3 potassium channel by extracelluar K+ and pH

中国抗癌协会神经肿瘤专业委员会第八届学术会议

作者： Lu Ma, jia-gang liu, qing Mao Dept. of Neurosurgery, West China hospital, Sichuan University, Chengdu, China

OBJECTIVE: Surgical resection of deep-seated midline brain tumors does not always resolve obstruction of cerebrospinal fluid pathways, and an additional operation-ventricular shunting-is required. To prevent postoperative obstructive hydrocephalus, we combine tumor removal and internal ventricular shunting in 1 stage. METHODS: Between 2000 and 2008, 82 patients with deep-seated midline brain tumors （tumors of the third ventricle, pineal region, thalamus, upper brainstem, and superior half of the fourth ventricle） underwent 84 tumor resections with intraoperative internal ventricular shunting. Two types of intraoperative shunting were performed: direct third ventriculostomy with fenestration of the premammillary membrane of the third ventricle floor and Liliequist’s membrane, 53 operations;and aqueductal stenting, 30 operations. In 1 patient, third ventriculostomy and aqueductal stenting were performed simultaneously. RESULTS: As most of the tumors had an infiltrative growth pattern, gross total tumor removal was achieved in only 31% of patients in this series. There were no fatal outcomes related to the surgery. Follow-up data were collected in 73 patients （89%） and rangedfrom 2 to 68 months （median, 16 months）. Additional shunting because of inadequate function of stoma or stent was performed in 13 patients at various times after surgery（median, 30 days）. The Kaplan-Meier survival analysis demonstrated that at 12 and 24months the intraoperative direct third ventriculostomy success rates were 67 and 61%,respectively;aqueductal stenting success rates were 93% at both 12 and 24 months. CONCLUSION: Intraoperative direct third ventriculostomy and aqueductal stenting under direct visual control were found to be reliable methods of hydrocephalus management in patients with deep-seated midline brain tumors.

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The regulation of KCNQ2/3 potassium channel by extracelluar ...

深层碳酸盐岩关键构造-流体演变与成岩-成储——以塔中奥陶系鹰山组为例

中国神经科学学会第六届学术会议暨学会成立十周年庆祝大会

作者： jia qing-zhong, liu Bo-yi, jia Zhan-feng, Du Xiao-na, Zhang Hai-lin Department of Pharmacology, Heibei Medical University, Shijiazhuang 050017, China

＜正＞Aim: To observe the effect of extracelluar of K+ and pH on KCNQ2/3 potassium current and explore the mechanism of regulation. Methods: The cRNAs of KCNQ were prepared using RibomaxTM Large Scale RNA Production Systems-SP6 and T7 Kit. Xenopus Oocytes injected with the cRNA of KCNQ2 and KCNQ3 potassium channel by 1:1 ratio were cultured in ND96 solution for 2-3 d. Whole cell KCNQ currents were recorded using TEVC method and to observe the effect of different concentrations of K+ and H+ solutions. Results: （1）The amplitude of KCNQ2/3 current was enhanced by extracellular K+ in concentration-dependent manner. Elevation of external [K+] at a range of 0-15mmol/L potentiated KCNQ2/3 and KCNQ2 currents, and the effect of external [K+] was more significant on KCNQ2 currents than KCNQ2/3 currents. （2） Elevation of extracellular [K+] had obvious effect on the slope of KCNQ2/3 channel’s activation curve. When extracellular [K+] was changed from 0 and 12mmol/L, the initial potential of activation was not changed （-60mV）, and the half activation voltage was shifted slightly to

关键词： KCNQ K+ pH regulation

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矿物岩石地球化学通报 2016年第5期35卷 827-838页

作者：李忠李佳蔚张平童于靖波刘嘉庆杨柳中国科学院地质与地球物理研究所北京100029 中国科学院大学北京100049 中国石油杭州地质研究院杭州310023

解析系统的构造-流体体制是认识叠合盆地深层碳酸盐岩成岩-成储规律的新思路。针对塔里木盆地塔中下-中奥陶统鹰山组深层碳酸盐岩(深度、温度分别达6500m和220℃)的系统研究表明,其发育6期方解石胶结作用,准同生、表生期胶结及浅埋藏... 详细信息

解析系统的构造-流体体制是认识叠合盆地深层碳酸盐岩成岩-成储规律的新思路。针对塔里木盆地塔中下-中奥陶统鹰山组深层碳酸盐岩(深度、温度分别达6500m和220℃)的系统研究表明,其发育6期方解石胶结作用,准同生、表生期胶结及浅埋藏等前三期胶结总体显示与正常海水相关的成岩特征,相比之下中-深埋藏等后两期胶结具有明显的δ13C负值和有机碳输入特征,而热流体胶结物的δ18O、δ13C值均显示相对最大负值。除准同生期选择性溶蚀和表生期溶蚀外,塔中鹰山组主要存在两期埋藏溶蚀,其中第二期除溶蚀早期方解石胶结外,还主要溶蚀白云石,且普遍与烃类注入匹配。研究区关键时期,即中晚奥陶世北西向逆冲断裂、志留-泥盆纪北东向转换走滑断裂、二叠纪张裂及相关流体活动,分别影响了鹰山组碳酸盐岩的岩溶、埋藏溶蚀-胶结等成岩-成储过程。

关键词：构造-流体体制成岩-成储深层碳酸盐岩奥陶系鹰山组塔里木盆地

High-quality,Wafer-size Graphene via Chemical Vapor Deposition

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High-quality,Wafer-size Graphene via Chemical Vapor Depositi...

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Nan liu,Lei Fu~*,Kai Yan,Boya Dai,qing jia,Zhongfan liu~* (Center for Nanoscale Science & Technology,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871)

Graphene,a rising material with interesting low-dimensional physical properties and potential applications in electronics,has received great *** it is widely investigated,lack of efficient routs to fabricate graphene hinder the application progress and constitute a bottleneck in building graphene-based ***’ s more,to synthesize large-area and uniform graphene with a facile and low cost method is urgently required for

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan Yang Han jia Tuo liu Yuzhen Yang Jun Yang Key Laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering advanced research on high-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum. By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-ranging, and elaborate manner. Exploiting the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter

鸡公山麻栎林和水杉林不同凋落物处理下土壤呼吸对降雨强度的响应

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生态与农村环境学报 2017年第2期33卷 166-173页

作者：胡梦君王佳丽尚晴刘银占河南大学生命科学学院植物逆境重点实验室河南开封475004 黄河水利职业技术学院河南开封475003

降雨脉冲对土壤呼吸具有瞬间的激发效应,地表凋落物是土壤有机碳的重要来源,并影响降雨的下渗过程和土壤含水量。降雨对土壤呼吸的激发效应是否受地表凋落物的影响?这一问题目前尚不清楚。针对我国亚热带-暖温带气候过渡区麻栎(Quercus ... 详细信息

降雨脉冲对土壤呼吸具有瞬间的激发效应,地表凋落物是土壤有机碳的重要来源,并影响降雨的下渗过程和土壤含水量。降雨对土壤呼吸的激发效应是否受地表凋落物的影响?这一问题目前尚不清楚。针对我国亚热带-暖温带气候过渡区麻栎(Quercus acutissima)林和水杉(Metasequoia glyptostroboides)林2种林型开展不同凋落物输入水平(对照、添加凋落物和去除凋落物)下模拟降雨事件对土壤呼吸影响研究,以阐明不同凋落物条件下土壤呼吸对降雨脉冲的响应规律。结果表明:就麻栎次生林而言,对照、添加凋落物和去除凋落物处理土壤呼吸速率在降雨10 min时均达到峰值,分别为4.72、11.68和5.12μmol·m^(-2)·s^(-1),添加凋落物增强了降雨脉冲的激发效应,去除凋落物与对照处理土壤呼吸速率在降雨事件后无显著差异(P>0.05)。地表凋落物层对麻栎次生林在降雨后的土壤呼吸速率变化具有重要影响。水杉林3种凋落物水平下土壤呼吸均不存在降雨激发效应,且凋落物添加与去除均显著降低水杉林土壤呼吸速率(P<0.05)。麻栎林土壤呼吸与土壤湿度呈显著正相关关系(P<0.05或P<0.01)。水杉林添加凋落物条件下土壤呼吸速率与土壤温度呈显著正相关关系(P<0.05)。该研究表明土壤呼吸对降雨脉冲的响应与森林类型、地表凋落物覆盖与否有密切关系,因此森林生态系统碳循环的变化除了考虑气候变化以外,还必须考虑林型和地表凋落物状况。

关键词：添加凋落物去除凋落物降雨脉冲土壤呼吸