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Precipitated-phase FeCrVTix Medium-entropy Alloys with Optimized Corrosion Resistance and Strength-ductility Synergy

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IMP & HIRFL Annual Report 2022年第1期 94-95页

作者： Sun Jianrong Cui Jinghao cheng Zhaoyi Chang hailong Zhang Linqi Tian Yinan Li Jian 不详

The corrosion behavior of metallic materials is an inevitable natural *** is a common service environment for metallic structural materials(ships,bridges,oil rigs,submarine pipelines,etc.),and the damage caused by seawater corrosion is severe because that corrosion can accelerate the failure of metallic *** the other hand,Pressurized Water Reactor(PWR)is widely used in worldwide nuclear power plants in operation.

关键词： corrosion ductility Corrosion

Self-calibrating microring synapse with dual-wavelength synchronization

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Photonics Research 2023年第2期11卷 347-356页

作者： JUNWEI cheng ZHENMING HE YUHAO GUO BO WU hailong ZHOU TEYAN CHEN YIXIN WU WENWEI XU JIANJI DONG XINLIANG ZHANG Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China Galileo Advanced Technology Lab Huawei TechnologiesShenzhen 518129China Institute of Strategic Research Huawei TechnologiesShenzhen 518129China

As a resonator-based optical hardware in analog optical computing, a microring synapse can be straightforwardly configured to simulate the connection weights between neurons, but it faces challenges in precision and stability due to cross talk and environmental perturbations. Here, we propose and demonstrate a self-calibration scheme with dual-wavelength synchronization to monitor and calibrate the synaptic weights without interrupting the computation tasks. We design and fabricate an integrated 4 × 4 microring synapse and deploy our self-calibration scheme to validate its effectiveness. The precision and robustness are evaluated in the experiments with favorable performance, achieving 2-bit precision improvement and excellent robustness to environmental temperature fluctuations(the weights can be corrected within 1 s after temperature changes 0.5°C). Moreover, we demonstrate matrix inversion tasks based on Newton iterations beyond 7-bit precision using this microring synapse. Our scheme provides an accurate and real-time weight calibration independently parallel from computations and opens up new perspectives for precision boost solutions to large-scale analog optical computing.

关键词： synchronization microring resonator

双后内侧入路缝合钩缝合与Fast-Fix全内缝合治疗Ramp损伤的早期疗效比较研究

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中国修复重建外科杂志 2024年第6期38卷 716-722页

作者：程琛秦海龙孙学斌新疆医科大学第一附属医院运动医学科乌鲁木齐830000

目的比较关节镜下双后内侧入路缝合钩缝合与Fast-Fix全内缝合治疗Ramp损伤的早期疗效。方法回顾分析2021年12月—2023年2月收治且符合选择标准的56例前交叉韧带断裂合并Ramp损伤患者临床资料。其中,采用关节镜下双后内侧入路缝合钩缝合2... 详细信息

目的比较关节镜下双后内侧入路缝合钩缝合与Fast-Fix全内缝合治疗Ramp损伤的早期疗效。方法回顾分析2021年12月—2023年2月收治且符合选择标准的56例前交叉韧带断裂合并Ramp损伤患者临床资料。其中,采用关节镜下双后内侧入路缝合钩缝合28例(A组),关节镜下Fast-Fix全内缝合28例(B组)。两组患者年龄、性别、致伤原因、损伤类型、受伤至手术时间、损伤侧别、身体质量指数及术前膝关节Lysholm评分、疼痛视觉模拟评分(VAS)及Tegner评分等基线资料比较,差异均无统计学意义(P>0.05)。术后患者定期随访,参照Barrett临床愈合标准以及MRI评价标准评估Ramp区域临床及影像愈合情况;采用Lysholm评分、VAS评分及Tegner评分评价膝关节功能及疼痛程度,并与术前评价结果进行比较。结果两组术后切口均Ⅰ期愈合。患者均获随访,随访时间12~18个月,平均14.9个月。两组Mc Murray试验均为阴性。A、B组术后6个月临床愈合率分别为71.4%(20/28)、64.3%(18/28),12个月时分别为92.9%(26/28)、82.1%(23/28),组间差异均无统计学意义(χ^(2)=0.327,P=0.567;χ^(2)=0.469,P=0.225)。两组间术后各时间点Lysholm评分、VAS评分及Tegner评分比较,差异均无统计学意义(P>0.05);两组内术后各项评分均较术前改善,12个月时较6个月时进一步改善,差异均有统计学意义(P<0.05)。末次随访时,膝关节MRI复查示A组Ramp区域达完全愈合、部分愈合、未愈合分别有26例(92.9%)、2例(7.1%)、0例(0),B组为25例(89.3%)、1例(3.6%)、2例(7.1%),两组差异无统计学意义(Z=-0.530,P=0.596)。结论关节镜下双后内侧入路缝合钩缝合与Fast-Fix全内缝合治疗Ramp损伤均安全可靠,术后早期患者膝关节功能显著改善。

关键词： Ramp损伤膝关节半月板损伤关节镜缝合钩 Fast-Fix全内缝合

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复杂光学曲面数理描述和设计方法研究

光学学报 2023年第8期43卷 129-155页

作者：程德文陈海龙王涌天杨通北京理工大学光电学院北京100081

为满足高性能光学系统的设计要求,需要研究面形灵活可控的光学曲面数理描述方法和其相应的分析及设计方法。具有更多自由度的复杂光学曲面可以有效提升光学系统的性能。简要讨论了光学曲面的数理描述方法;概括性地介绍了光学曲面数理描... 详细信息

为满足高性能光学系统的设计要求,需要研究面形灵活可控的光学曲面数理描述方法和其相应的分析及设计方法。具有更多自由度的复杂光学曲面可以有效提升光学系统的性能。简要讨论了光学曲面的数理描述方法;概括性地介绍了光学曲面数理描述方法的研究现状与进展,介绍了局部和整体面形控制方法,归纳总结了新的复杂光学曲面数理描述方程,并通过实例证明相关曲面应用的可行性和有效性。最后对曲面数理描述方法的未来发展进行了讨论和展望。

关键词：光学设计几何光学成像系统光学曲面数理描述

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间羟基苯乙胺的合成

精细石油化工 2008年第3期25卷 52-55页

作者：程广斌孙海龙南京理工大学化工学院江苏南京210094

以间羟基苯甲醛为原料经过缩合,催化加氢合成了间羟基苯乙胺,考察了水对缩合反应以及反应条件对催化加氢的影响。确定了以5%Pd/C为催化剂加氢的优化条件:反应时间3.5 h,反应压力1.5 MPa,反应温度100℃,总收率可达75.4%。

关键词：间羟基苯乙胺间羟基苯甲醛缩合催化加氢

B_(4)C含量对(Ti_(0.25)Zr_(0.25)Hf_(0.25)Ta_(0.25))B_(2)-B_(4)C陶瓷力学性能及抗氧化性能的影响

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无机材料学报 2024年第6期39卷 697-706页

作者：刘国昂王海龙方成黄飞龙杨欢郑州大学材料科学与工程学院郑州450001

新型高熵硼化物陶瓷具有优异的高温稳定性、低热导率等优点,在高温热防护领域具有广阔的应用前景。本研究采用硼/碳热还原法结合热压烧结技术在1900℃下制备了(Ti_(0.25)Zr_(0.25)Hf_(0.25)Ta_(0.25))B_(2)-B_(4)C高熵硼化物陶瓷,并研究... 详细信息

新型高熵硼化物陶瓷具有优异的高温稳定性、低热导率等优点,在高温热防护领域具有广阔的应用前景。本研究采用硼/碳热还原法结合热压烧结技术在1900℃下制备了(Ti_(0.25)Zr_(0.25)Hf_(0.25)Ta_(0.25))B_(2)-B_(4)C高熵硼化物陶瓷,并研究了B_(4)C第二相含量对其力学及抗氧化性能的影响规律。结果表明,B_(4)C均匀分布在高熵基体中,有效改善了高熵陶瓷的相对密度和力学性能。当B_(4)C体积分数为20%时,复相陶瓷的抗弯强度、断裂韧性以及维氏硬度均达到最高,分别为(570.0±27.6)MPa、(5.58±0.36)MPa·m^(1/2)和(24.6±1.1)GPa。微观结构分析表明,B_(4)C能够钉扎晶界、细化晶粒,并能够引入裂纹偏转、分支等增韧机制,最终实现复相陶瓷的强化及韧化。此外,利用静态氧化实验,揭示了B_(4)C含量对复相陶瓷800~1400℃抗氧化性能的影响。当B_(4)C体积分数不小于20%时,其氧化生成的玻璃相B_(2)O_(3)能够均匀包裹(Zr,Hf)O_(2)、TiO_(x)及Ta_(2)O_(5)等高熵基体对应的氧化物,从而在陶瓷表面形成均匀致密的氧化层,抑制氧向基体内部扩散,降低氧化层厚度并提升复相陶瓷的抗氧化性能。本工作能够为高熵硼化物陶瓷的力学及抗氧化性能研究提供实验依据和数据支撑。

关键词：高熵硼化物陶瓷 B_(4)C 力学性能抗氧化性能

Under the Limited Rational Conditions the Games between the Investors in Securities

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Under the Limited Rational Conditions the Games between the ...

Nanosuspensions of Poorly Water Soluble Drugs Prepared by Precipitation-Combined Homogenization Technology based on Acid-Base Neutralization Reactions

第十五届工业工程与工程管理国际会议

作者： cheng Wei Wang hailong Zeng Xiaodan School of Management Shenyang University Shenyang P.R.China 110044

＜正＞The game between buyer and seller in stock market is inevitable due to their common purpose of gaining profits. The classical supposition in the traditional game theory is the complete rational person,and it does not match reality in serious ***,the game theory was improved by using the concept of a limited rational of game theory and introducing of the dynamic reproduction *** Game methods was applied to the stock market,and then made the dynamic reproduction thinking combined with the binary *** built a dynamic stability strategy in the prediction model,which can guide securities investors for a more rational investment.

关键词： Limited Rationality Evolutionary Game Theory Evolutionary Stable Strategy

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Nanosuspensions of Poorly Water Soluble Drugs Prepared by Pr...

Pepper variome reveals the history and key loci associated with fruit domestication and diversification

2015年中国药学大会暨第十五届中国药师周

作者： Gang Shen Ling cheng Lihong Zhang Baode shen Juanjuan Li Juan Zhen Rong Xu hailong Yuan Pharmacy College Chengdu University of Traditional Chinese Medicine Department of Pharmacy Air Force General Hospital of PLA

Herpetospermum caudigerum lignans（HTL）, one of the potential drugs with the treatment of anti-hepatitis B virus and hepatoprotective effects, have been limited in clinical applications because of poor saturation solubility, resulting in low bioavailability. Both herpetrione（HPE） and herpetin（HPN） are considered as the most abundant ingredient in HTL and exhibit weak acidity. The purpose of this study was to produce dried preparations of HTL（composed of HPE and HPN） nosuspensions with high redispersibility using lyophilization. The HTL-NS was prepared by utilizing precipitation-combined homogenization technology based on acid-base neutralization reactions, and variously critical formulation and process parameters affecting the characteristics of HTL-NS were optimized. The resultant products were characterized by particle size analysis, SEM, XRD, physical stability, solubility, dissolution and bioavailability. The dried preparations with a mean redispersed particle size of 286 nm was produced by using 4%（w/v） mannitol as cryoprotectants and possessed good physical stability at 4 oC or 25 oC for two months. Meanwhile, in vitro evaluation showed dried preparations could significantly increase saturation solubility and dissolution rate along with improving in vivo oral bioavailability, when compared with raw drug. This study provides a feasible drug delivery system for poorly water-soluble ingredients with pH-dependent solubility.

关键词： Herpetospermum caudigerum lignans nanosuspensions acid–base neutralization saturation solubility dissolution oral bioavailability

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Molecular Plant 2022年第11期15卷 1744-1758页

作者： Yacong Cao Kang Zhang hailong Yu Shumin Chen Donghui Xu Hong Zhao Zhenghai Zhang Yinqing Yang Xiaozhen Gu Xinyan Liu Haiping Wang Yaxin Jing Yajie Mei Xiang Wang Véronique Lefebvre Weili Zhang Yuan Jin Dongliang An Risheng Wang Paul Bosland Xixiang Li IIan Paran Baoxi Zhang Giovanni Giuliano Lihao Wang Feng cheng Key Laboratory of Vegetables Geneticsand Physiology of China Ministry of Agriculture and Rural AffairsKey Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural AffairsSino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersCAAS(Chinese Academy of Agricultural Sciences)12 Zhongguancun South StreetBeijing 100081P.R.China INRAE GAFLUnitéde Génétique et Amélioration des Fruits et Légumes84140 MontfavetFrance Institute of Vegetables Academy of Agricultural Sciences of Guangxi174 Daxue East RoadNanning 53007P.R.China Department of Plant and Environmental Sciences NMSULas CrucesNM 88003USA Institute of Plant Sciences Agricultural Research OrganizationThe Volcani CenterRishon LeZionIsrael Biotechnology and Agroindustry Division ENEAItalian National Agency for New TechnologiesEnergy and Sustainable DevelopmentVia Anguillarese301-00123 RomaItaly

Pepper(Capsicum spp.)is an important vegetable crop that provides a unique pungent sensation when *** construction of a pepper variome map,we examined the main groups that emerged during domestication and breeding of ***,their relationships and temporal succession,and the molecular events underlying the main *** results showed that the initial differentiation in fruit shape and pungency,increase in fruit weight,and transition from erect to pendent fruits,as well as the recent appearance of large,blocky,sweet fruits(bell peppers),were accompanied by strong selection/fixation of key alleles and introgressions in two large genomic ***,we identified Up,which encodes a BIG GRAIN protein involved in auxin transport,as a key domestication gene that controls erect vs pendent fruit *** up mutation gained increased expression especially in the fruit pedicel through a 579-bp sequence deletion in its 5′upstream region,resulting in the phenotype of pendent *** function of Up was confirmed by virus-induced gene *** together,these findings constitute a cornerstone for understanding the domestication and differentiation of a key horticultural crop.

关键词： Capsicum variome domestication fruit orientation pungency fruit shape sweet pepper blocky fruit pepper narrow fruit pepper