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Application of high energy X-ray diffraction and Rietveld refinement in layered lithium transition metal oxide cathode materials

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Nano Research 2023年第7期16卷 9954-9967页

作者： zhuo yang Yong Lu Xiaomeng Liu Fujun Li Jun Chen Renewable Energy Conversion and Storage Center(RECAST) Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China

Layered lithium transition metal oxide(LTMO)cathode materials have attracted much attention for lithium-ion batteries and are shining in the current *** a clear structure-performance relationship is necessary for the performance improvement of LTMO cathode *** combination of synchrotron X-ray diffraction(XRD)with high intensity and XRD Rietveld refinement is powerful for revealing the structural characteristics of LTMO cathode *** review summarizes the application of high energy XRD and Rietveld refinement in LTMO cathode materials,including the brief introduction of synchrotron XRD and Rietveld refinement and their applications in understanding the structural evolution related to the synthetic,thermal runaway,cycling,and high-rate charge/discharge process of LTMO cathode *** XRD can provide insights into the intermediates and reaction paths in the synthesis process,the origin of thermal runaway,the mechanism of structural decay during cycles,and the structural evolution during high-rate charging/*** works should focus on the development of higher intensity X-rays to gain more in-depth insights into the intrinsic relationship between their structural characteristics and properties.

关键词： synchrotron X-ray diffraction Rietveld refinement layered cathode materials transition metal oxide lithium-ion batteries

Scheme for Realizing Probabilistic Teleportation of Bipartite Atomic State via Cavity QED

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Communications in Theoretical Physics 2006年第4期45卷 621-624页

作者： DONG Ping yang Ming CAO zhuo-Liang School of Physics ＆ Material Science Anhui University Hefei 230039 China

We present a physical scheme for realizing probabilistic teleportation of bipartite atomic states via cavity QED. This scheme requires only a nonmaximally entangled pair used as quantum channel, so we reduce the requi... 详细信息

关键词： bipartite atomic state teleportation nonmaximally entangled state cavity QED

Investigation on Metallurgical Factors Controlling Charpy Impact Toughness in 1Cr21Ni5Ti Duplex Stainless Steel

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Journal of Iron and Steel Research International 2009年第2期16卷 73-79页

作者： yang zhuo-yue SU Jie WANG Ya-ming Institute of Structure Materials Central Iron and Steel Research Institute Beijing 100081 China Steel Tube Department China Iron and Steel Research Institute Group Beijing 100081 China

Based on the fact that toughness degradation occurred in 1Cr21Ni5Ti duplex stainless steel during slow cooling in a temperature interval of 400-600 ℃ following brazed welding, a simulated embrittlement treatment was utilized to evaluate its emhrittlement tendency. Accumulated experiences have shown that high Ti and A1 contents led frequently to severe toughness deterioration. To elucidate this phenomenon, four heats with various Ti and Al contents were prepared in laboratory-scale melts, which were used to investigate the inherent embrittlement nature. The results have shown that 550 ℃ aging led only to a modest toughness reduction, whereas, aging around 475 ℃ resulted in ferrite embrittlement, regardless of Ti, A1 levels. However, high Ti, A1 levels reduced the austenite phase, which, in the case of its inferior shape and distribution due to insufficient hot deformation, failed to resist cleavagetype cracks initiated in the ferrite phase. Increasing hot-forged areas reduction could modify the shape and distribution of austenite, resulting in the enhanced resistance of the austenite to the cleavage-type cracks, which have been confirmed to be beneficial for brittlement suppression of 1Cr21Ni5Ti duplex stainless steel.

关键词： 1Cr21Ni5Ti steel emhrittlement Ti content AI content impact toughness

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某低品位锰矿石抛废试验研究

中国锰业 2024年第1期42卷 44-46页

作者：蒋权赵强张鹏羽杨卓中冶长天国际工程有限责任公司湖南长沙410205

针对某低品位锰矿石,进行了工艺矿物学和抛废试验研究,分别考察了跳汰机、智能视觉矿石分选机、智能射线矿石分选机、皮带永磁磁选干抛机、高梯度磁选干抛机等抛废设备对锰矿石抛废效果的影响。结果表明,该矿石中主要回收元素Mn含量为7.... 详细信息

针对某低品位锰矿石,进行了工艺矿物学和抛废试验研究,分别考察了跳汰机、智能视觉矿石分选机、智能射线矿石分选机、皮带永磁磁选干抛机、高梯度磁选干抛机等抛废设备对锰矿石抛废效果的影响。结果表明,该矿石中主要回收元素Mn含量为7.32%;含Mn矿物主要为软锰矿,分布率为61.99%。采用跳汰分选机、智能视觉分选机、高梯度磁选干抛机均无法对该矿石进行有效抛废;使用皮带永磁磁选机干抛可以抛除产率为63.32%,品位为5.81%的尾矿,此时皮带永磁磁选干抛机的磁场强度为1 T,入选粒度为-2.36 mm,出料口宽度为3 cm,皮带转速为5 cm/s;使用智能射线矿石分选机在最优抛废模型下可以直接获得Mn品位为17.47%、作业回收率为18.89%的高品位锰精矿。

关键词：锰矿抛废磁选 X射线

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从某磁选尾矿浮选回收钛铁矿工艺试验研究

工程建设 2024年第8期56卷 1-6页

作者：纪振明赵强张鹏羽杨卓中冶长天国际工程有限责任公司湖南长沙410205

钛是一种重要的战略性稀有金属资源。我国钛资源储量丰富,其主要以钛铁矿的形式赋存,但随着禀赋较高的资源不断被开采,矿石逐渐呈现品位低、多脉石矿物伴生的特点,导致综合回收的难度较大。文章以某低品位难选钛铁矿弱磁作业后的尾矿为... 详细信息

钛是一种重要的战略性稀有金属资源。我国钛资源储量丰富,其主要以钛铁矿的形式赋存,但随着禀赋较高的资源不断被开采,矿石逐渐呈现品位低、多脉石矿物伴生的特点,导致综合回收的难度较大。文章以某低品位难选钛铁矿弱磁作业后的尾矿为研究对象,对其进行了浮选回收试验工艺试验研究。研究结果表明:在以硫酸作为矿浆pH调整剂、水玻璃作为分散剂、硝酸铅为活化剂、MOH为捕收剂,在给矿含TiO_(2) 13.10%、TFe 10.25%的情况下,经一粗三精两扫的闭路流程选别,可获得了TiO_(2)品位为46.12%、含TFe 33.03%、钛回收率57.05%的钛精矿,选矿指标较好、钛精矿纯度较高,实现了该难选钛铁矿资源的高效回收利用。

关键词：钛铁矿浮选低品位难选高效回收

STRUCTURE PARAMETERS DESIGN AND PERFORMANCE TEST OF FUEL INJECTION SYSTEM

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Chinese Journal of Mechanical Engineering 2006年第3期19卷 407-411页

作者： WU Changshui YU Jinxia yang Lin zhuo Bin Institute of Automotive Electronic Technology Shanghai Jiaotong University Shanghai 200030 China

Based on the numerical simulation analysis, structure parameters of the high pressure fuel pump and common rail as well as flow limiter are designed and the GD-1 high pressure common rail fuel injection system is self-developed. Fuel injection characteristics experiment is performed on the GD-1 system. And double-factor variance analysis is applied to investigate the influence of the rail pressure and injection pulse width on the consistency of fuel injection quantity, thus to test whether the design of structure parameters is sound accordingly. The results of experiment and test show that rail pressure and injection pulse width as well as their mutual-effect have no influence on the injection quantity consistency, which proves that the structure parameters design is successful and performance of GD-1 system is sound.

关键词： High pressure common rail fuel injection system Structure parameters design Variance analysis

APPLICATION OF CIRCUIT SIMULATION IN HARDWARE DESIGN FOR ELECTRONIC CONTROL HIGH PRESSURE COMMON-RAIL FUEL SYSTEM OF DIESEL ENGINE

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Chinese Journal of Mechanical Engineering 2005年第4期18卷 613-616页

作者： Tan Wenchun Yu Shitao yang Lin zhuo Bin Institute of Automotive Electronic Technology Shanghai Jiaotong University Shanghai 200030 China

By means of circuit simulation, hardware of electronic control unit （ECU） of high pressure common-rail electronic control fuel system for diesel engine is designed. According to the system requirements for hardware of ECU, signal-processing circuit of variable reluctance （VR） sensor, filter circuit for input signal, high voltage power circuit and driver and protection circuit of solenoid are simulated as emphases. Difficulties of wide scope of VR sensor output signal, efficiency of high voltage power and reliable and swift driver of solenoid are solved. The results of simulation show that the hardware meets the requirement of the fuel system. At the same time, circuit simulation can greatly increase quality of the design, alleviate design labor and shorten design time.

关键词： Diesel engine Electronic control unit (ECU) Circuit simulation.

子宫颈腺癌预后列线图的建立及优选治疗方式的探讨基于SEER数据库及中国单中心数据的回顾性研究

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中华妇产科杂志 2024年第4期59卷 307-319页

作者：李响高玉华杨卓马悦刘畅刘光聪王丹波大连理工大学附属肿瘤医院辽宁省肿瘤医院妇科沈阳110801

目的基于美国国立癌症研究所的监测、流行病学及最终结果(SEER)数据库及中国单中心数据建立并验证预测子宫颈腺癌患者预后的列线图,探讨子宫颈腺癌的优选治疗方式。方法本研究从SEER数据库筛选出2478例子宫颈腺癌患者作为训练队列,并选... 详细信息

目的基于美国国立癌症研究所的监测、流行病学及最终结果(SEER)数据库及中国单中心数据建立并验证预测子宫颈腺癌患者预后的列线图,探讨子宫颈腺癌的优选治疗方式。方法本研究从SEER数据库筛选出2478例子宫颈腺癌患者作为训练队列,并选择辽宁省肿瘤医院收治的195例子宫颈腺癌患者作为外部验证队列,收集两个队列患者的临床病理资料及随访数据;放疗组为同步放化疗为主的综合治疗,手术组为根治性手术为主的综合治疗。采用log-rank检验和Cox回归方法分析影响子宫颈腺癌患者预后的相关因素,建立预测子宫颈腺癌患者3年、5年总生存率的列线图,并进行SEER数据库训练队列的内部验证及本院数据验证队列的外部验证。结果(1)SEER数据库训练队列中,放疗组385例(15.54%,385/2478),手术组2093例(84.46%,2093/2478);放疗组患者的总生存时间为(55.8±51.3)个月,手术组为(94.4±61.7)个月,两组比较,差异有统计学意义(χ^(2)=256.44,P50岁)、单身状态、肿瘤最大径(>4 cm)、病理分级高(G2、G3)及FIGO分期晚(≥Ⅱa2期)均为影响子宫颈腺癌患者总生存时间的独立危险因素(P均4~4~4~<6 cm的局部晚期(Ⅰb3、Ⅱa2期)、Ⅲc期(T1、T2期)子宫颈腺癌患者能从以根治性手术为主的综合治疗中获益更多。本研究建立的列线图经内部及外部验证,对子宫颈腺癌患者具有良好的预后预测效能。

关键词：宫颈肿瘤腺癌子宫切除术化放疗列线图预后回顾性研究

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双水相聚合物乳液的制备及减阻性能

应用化工 2024年第3期53卷 555-559,564页

作者：杨卓澜赖小娟管磊磊王淼董新平王磊杨雯雯文新陕西科技大学中国轻工业轻化助剂重点实验室陕西西安710021 陕西农产品加工技术研究院陕西西安710021 中国石油长庆油田分公司第十一采油厂甘肃庆阳745412 陕西纺织器材研究所有限责任公司陕西咸阳712000 陕西铜泽新能源科技有限公司陕西西安710018

以丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)为原料,采用水分散聚合法,制备双水相聚合物(NPAM)。相对分子量为380万,粒子分布集中,且粒径小,平均粒径为182.7 nm。室内评价聚合物的减阻效果,其在清水中减阻率达到80%,在10%的盐水中... 详细信息

以丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)为原料,采用水分散聚合法,制备双水相聚合物(NPAM)。相对分子量为380万,粒子分布集中,且粒径小,平均粒径为182.7 nm。室内评价聚合物的减阻效果,其在清水中减阻率达到80%,在10%的盐水中减阻率达到77%。黏弹性能分析,NPAM的抗应变能力较强。双水相聚合物可用作减阻剂,为油气田压裂作业提供优秀的减阻性能。

关键词：丙烯酰胺水分散聚合减阻剂摩阻油气开采