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Variation in Pore Space and Structure of Organic-rich Oilprone Shales from a Non-marine Basin:Constraints from Organic Matter and Minerals

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Acta Geologica Sinica(English Edition) 2022年第3期96卷 1057-1069页

作者： jia jianliang LIU Zhaojun ZHOU renjie LIU Rong GAO Yuan Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China College of Earth Sciences Jilin UniversityChangchun 130061China School of Earth and Environmental Sciences University of QueenslandBrisbane QLD 4072Australia Beijing Center for Physical and Chemical Analysis Beijing 100089China

Organic matter(OM)and minerals are major particle components of lacustrine *** influence of OM and minerals on pore space and structure in organic-rich oil-prone shales containing a large range of total organic carbon(TOC)contents is poorly *** this study,we investigated the variation in pore space and structure of low mature lacustrine shales in the Songliao Basin(NE China),based on a study of the mineralogy,petrography,geochemistry,and geophysical properties of *** pore types make markedly different contributions to the mineral surface area(MSA)and pore volume(PV)of the *** exists a negative correlation between MSA/PV and TOC in mesopores(r^(2)=0.75/0.65)and macropores(r^(2)=0.74/0.68),and a positive correlation in micropores(r^(2)=0.59/0.64),which are associated with the variation of mineral and TOC contents.A positive relationship between the throat/pore ratio and TOC(r^(2)=0.82)shows an increase in throat radius and decrease in pore radius with increasing TOC *** relationship is supported by the reduction in mean pore diameter(MPD)for large pores and increase in MPD for small *** variations are related to the decreased pores by quartz plus feldspar(Q+F)content,increased throats by clay minerals,an d enhanced pore-fill by *** propose that the variation of OM and minerals is a key control on the pore space and structure of low mature organic-rich oil-prone shales.

关键词： lacustrine basin oil-prone shale pore space pore structure OM-mineral association

Microstructure, Mechanical Properties and Oxidation Resistance of Nb-22Ti-14Si-2Hf-2Al-xCr Alloys

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Chinese Journal of Aeronautics 2012年第2期25卷 292-296页

作者： WANG Ligang jia Lina CUI renjie ZHENG Lijing ZHANG Hu School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Nb-22Ti-14Si-2Hf-2Al-xCr （x=2, 6, 10, 14, 17 at%） alloys are prepared by arc-melting under argon atmosphere. Microstructural characteristics, mechanical properties and oxidation resistance of the arc-melted alloys are investigated. At 2 at% Cr content, the microstructure is composed of Nbss, Nb3Si and a small quantity of Nb5Si3, when the Cr contents increase, Nb3Si disappears. For the high Cr content （x ≥ 10 at%） alloys, besides the Nbss and Nb5Si3, Cr2Nb is also detected. With the increase of Cr content, the volume fractions of Cr2Nb and Nb5Si3 increase, while that of Nbss increases firstly and then begins to degrade when the Cr content is higher than 6 at%. For the alloy with 2 at% Cr, the room temperature fracture toughness is about 14.5 MPa·m1/2, but badly decreases to about 8.5 MPa·m1/2, when the Cr contents increase. Vickers hardness of Nbss tends to increase linearly from about 400 to 500, while that of silicides is not sensitive to Cr contents, about 950. The appearance of Cr2Nb phase significantly improves the high temperature oxidation resistance of the alloys with high Cr contents. The isothermal oxidation tests show that the oxidation kinetics of the alloys with various Cr contents follows parabolic oxidation kinetics.

关键词： arc-melted alloys Nb-Si alloys microstructure mechanical properties oxidation resistance

颏下岛状皮瓣转移修复口腔癌软组织缺损的临床效果

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精准医学杂志 2022年第5期37卷 426-429页

作者：潘永海贾仁杰刘伟江瑾焦德生青岛市中心医院口腔科山东青岛266042

目的探讨颏下岛状皮瓣转移修复口腔癌术后软组织缺损的临床效果。方法选取我院口腔颌面外科2018年5月-2022年5月拟行手术治疗的20例口腔癌患者,其中舌鳞癌11例,口底鳞癌2例,口咽鳞癌3例,牙龈鳞癌4例,均行原发病灶扩大切除+功能性颈淋巴... 详细信息

目的探讨颏下岛状皮瓣转移修复口腔癌术后软组织缺损的临床效果。方法选取我院口腔颌面外科2018年5月-2022年5月拟行手术治疗的20例口腔癌患者,其中舌鳞癌11例,口底鳞癌2例,口咽鳞癌3例,牙龈鳞癌4例,均行原发病灶扩大切除+功能性颈淋巴清扫术+颏下岛状皮瓣转移修复术,随访1周~3年,评估皮瓣成活、神经损伤、外形与功能修复、肿瘤复发和淋巴结转移等情况。结果20例患者颏下岛状皮瓣均移植成活,无神经损伤,术区外形与功能良好。其中1例口底鳞癌患者皮瓣远端部分坏死,经换药后成活;1例舌鳞癌患者病灶复发,1例舌鳞癌患者同侧淋巴结转移。结论颏下岛状皮瓣修复口腔癌术后软组织缺损易于存活,术区形态及功能恢复良好,在临床上值得推广应用。但对Ⅲ期及以上口腔癌患者应慎用。

关键词：口腔肿瘤软组织损伤颏下岛状皮瓣外科皮瓣治疗结果

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THE GLASS TRANSITION TEMPERATURE AND MICROSTRUCTURE OF POLYURETHANE/EPOXY RESIN INTERPENETRATING POLYMER NETWORKS NANOCOMPOSITES

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Chinese Science Bulletin 2006年第3期51卷 293-298页

作者： jia Qingming ZHENG Maosheng SHEN renjie CHEN Hongxiang School of Material Science and Engineering Xi'an Jiaotong UniversityXi'an 710049 China

Nanocomposites with various contents of organophilic montmorillonite (oMMT) have been prepared by adding oMMT to interpenetrating poly- mer networks (IPNs) of polyurethane and epoxy resin (PU/EP) which had been prepared by a sequential polymeric technique. DSC experiment indicates a novel phenomenon that the glass transition tem- perature (Tg) of the nanocomposites increases with the oMMT content up to 3 %, then decreases with further increasing oMMT content. In order to explain this phenomenon, crosslink density, hydrogen bond- ing in the hard segments, crystallization of the nanocomposites and the exfoliation degree of oMMT in the nanocomposites have been investigated by swelling method, FT-IR, XRD, SEM and TEM, re- spectively. The results indicate that the crosslink density and the hydrogen bonding index of the nanocomposites increase, but the crystallization de- gree of the nanocomposites decreases with increas- ing oMMT content. In addition, oMMT improves the network structure of PU/EP.

关键词：聚亚安酯环氧树脂有机蒙脱石纳米复合物玻璃态转化温度微观结构互穿聚合物网络

Fluorobenzene diluted low-density electrolyte for high-energy density and high-performance lithium-sulfur batteries

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Journal of Energy Chemistry 2022年第5期31卷 752-761页

作者： Zhilong Han Shuping Li Mengjun Sun renjie He Wei Zhong Chuang Yu Shijie Cheng jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina School of Physics Huazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

The mass fraction of electrolytes is the crucial factor affecting the energy density of lithium-sulfur(Li-S)batteries. Due to the high porosity within the C/S cathode, high concentration of polysulfides, and side reaction in lithiun metal anode under lean electrolyte, it is extremely challenging to improve performance while reducing the electrolyte volume. Here, we report a novel electrolyte with relatively low density(1.16 g cm^(-2)), low viscosity(1.84 m Pa s), and high ionic conductivity, which significantly promotes energy density and cyclability of Li-S batteries under practical conditions. Moreover, such electrolyte enables a hybrid cathode electrolyte interphase(CEI) and solid electrolyte interface(SEI) layer with plentiful Li F, which leads to fast kinetics of ions transport and stable cyclability even under low *** to Li-S batteries in electrolyte employing 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether(TTE) diluent, the ultra-thick cathode(20 mg cm^(-2)) shows a high capacity of 9.48 m Ah cm^(-2)and excellent capacity retention of 80.3% over 191 cycles at a low electrolyte-to-sulfur ratio(E/S = 2) and negative-to-positive capacity ratio(N/P = 2.5), realizing a 19.2% improvement in energy density in coin cells(from 370 to 441 Wh kg^(-1)) and a high energy density up to 467 Wh kg^(-1) in pouch cells. This study not only provides guidance for the electrolyte design but also paves the way for the development of high performance Li-S batteries under practical conditions.

关键词： High energy density Lithium-sulfur battery Thick sulfur electrode Lean electrolyte Low-density electrolyte

Interaction mechanism between niobium-silicide-based alloy melt and Y_2O_3 refractory crucible in vacuum induction melting process

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China Foundry 2011年第2期8卷 190-196页

作者： Gao Ming jia Lina Tang Xiaoxia Li Xiaojian Cui renjie Zhang Hu School of Material Science and Engineering Beihang University Beijing 100191 China

The Y2O3 crucibles were introduced in the study as an alternative to the traditional ceramic ones in vacuum induction melting of multi-component Nb-16Si-22Ti-2AI-2Hf-17Cr （at.%） alloys, to reveal the possible interactions between the alloy melt and the refractory crucible. Multiple melting time lengths and two cooling schemes were designed and used for the experiments. The chemical composition and microstructure of the tested alloy and the melt-crucible interaction were investigated and evaluated. In the experiments,Y2O3 crucible displays good physical-chemical compatibility. The results indicate that the increment of O element in the as-cast ingot iS： 0.03at.%-0.04at.% （72-97 ppm） and the increment of Y element is very insignificant. The key features of the alloy melt interacting with Y2O3 ceramics are analyzed and concluded in the paper. As a result of the dissolution reactiofi xY2O3 （in molten alloy）＋（1-x）HfO2 （impurity） →,Hf1-xY2xO2-x, a continuous double-layer solid film consisted of HfO2 solid solution （-2 pm） and pure HfO2 （-5μm） is formed on the surface of the test ingot after cooled down in the crucible. The experimental results show that theY2O3 crucible is applicable to the vacuum induction melting of Nb＇ Si based alloys.

关键词： yttria crucible melt-crucible interaction vaccuum induction melting

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β-葡聚糖酶高产菌株诱变选育

畜禽业 2024年第9期35卷 11-16页

作者：王克芬张辉赵遵明张强张法玲滕来宾贾仁洁山东隆科特酶制剂有限公司山东省酶制剂发酵技术重点实验室山东临沂276400 沂水县动物疫病预防控制中心山东临沂276400

以木霉(Trichoderma sp.)为出发菌株,通过紫外诱变与光复活交替处理获得了1株高产β-葡聚糖酶突变株UN123。该菌株在摇瓶中的平均酶活大于10000 U/mL,最适反应温度是40℃,90℃条件下保温处理2 h,仍能保持80%以上酶活,最适反应pH是3.0,在... 详细信息

以木霉(Trichoderma sp.)为出发菌株,通过紫外诱变与光复活交替处理获得了1株高产β-葡聚糖酶突变株UN123。该菌株在摇瓶中的平均酶活大于10000 U/mL,最适反应温度是40℃,90℃条件下保温处理2 h,仍能保持80%以上酶活,最适反应pH是3.0,在pH 2.0~7.0的条件下处理2 h后,相对酶活力保持在80%以上且对胃蛋白酶、胰蛋白酶及凝乳蛋白酶具有良好的耐受性。

关键词：木霉 β-葡聚糖酶紫外诱变光复活

Enhanced Dynamic Phase Stability and Suppressed Mn Dissolution in Low-Tortuosity Spinel LMO Electrode

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Energy Material Advances 2022年第1期2022卷 24-32页

作者： renjie He Sheng Lei Mengchuang Liu Mingsheng Qin Wei Zhong Shijie Cheng jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074P.R.China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China

Microspinel LiMn_(2)O_(4)(LMO)is a widely used cathode material in power lithium-ion ***,inevitable Mn dissolution and dynamic phase instability will cause the degradation of microspinel LMO during ***,a low-tortuosity LMO(LMO-LT)electrode is fabricated by an ice-templating method,which exhibits enhanced dynamic phase stability,alleviated Mn dissolution,and rare particle microcracks during *** is shown that the low-tortuosity electrode enables fast lithium-ion diffusion and thus small concentration polarization,leading to uniform electrochemical reaction within microregions of the LMO-LT ***,the fast lithium-ion transport kinetics and even mesoscopic scale reactions of the LMO-LT electrode effectively alleviate irreversible phase transition and Mn dissolution as well as suppress crack generation in LMO *** a result,the full cell[negative-to-positive capacity ratio(N/P)=1.1]with thick LMO-LT cathode(13 mg cm^(−2))and Li_(4)Ti_(5)O_(12) anode sustains 80.0%capacity over 200 *** LMO-LT electrode further delivers 78.9%capacity of that at 0.1 C at the high rate of 5 *** work provides an important strategy to enhance dynamic phase stability and suppress Mn dissolution at the mesoscopic scale,promoting the development of high-performance LMO electrodes.

关键词： electrode lithium kinetics

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一株高产木聚糖酶菌株的诱变筛选

中国饲料添加剂 2020年第10期 9-13页

作者：钱娟娟贾仁洁王金余王兴吉王克芬刘文龙山东隆科特酶制剂有限公司山东省酶制剂发酵技术重点实验室山东临沂276400

以米曲霉(Aspergillus oryzae)HF-201为出发菌株,通过亚硝基胍(NTG)诱变筛选出一株酶活提高的菌株NTG13-86,该米曲霉突变菌株NTG13-86在摇瓶中的酶活达到3500U/ml。再对该菌株进行常温常压等离子体(ARTP)复合诱变,结合抗高浓度葡萄糖阻... 详细信息

以米曲霉(Aspergillus oryzae)HF-201为出发菌株,通过亚硝基胍(NTG)诱变筛选出一株酶活提高的菌株NTG13-86,该米曲霉突变菌株NTG13-86在摇瓶中的酶活达到3500U/ml。再对该菌株进行常温常压等离子体(ARTP)复合诱变,结合抗高浓度葡萄糖阻遏效应,最终筛选出一株抗2-脱氧-D-葡萄糖的高产突变株GAR3-107,该菌株酶活达到5200u/ml,比出发菌株HF-201提高了1.3倍,且传代稳定性较好。

关键词：常温常压等离子体亚硝基胍复合诱变 2-脱氧-D-葡萄糖