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晚熟优质黄肉桃新品种美阳的选育

果树学报 2024年第5期41卷 1009-1012页

作者：王越辉白瑞霞马之胜贾云云赵艳丽杜润生李建明河北省农林科学院石家庄果树研究所石家庄050061 河北省林草种苗与经济林花卉中心石家庄050092

美阳是以中晚熟白肉桃优株99-1-44(丰白×金童5号)为亲本,通过自交育成的晚熟黄肉桃新品种,2020年通过河北省林木品种审定委员会审定。果实圆形,果顶凹,缝合线中,两半部对称,平均单果质量377 g,大果质量602 g。果皮底色黄,果面着红色,... 详细信息

美阳是以中晚熟白肉桃优株99-1-44(丰白×金童5号)为亲本,通过自交育成的晚熟黄肉桃新品种,2020年通过河北省林木品种审定委员会审定。果实圆形,果顶凹,缝合线中,两半部对称,平均单果质量377 g,大果质量602 g。果皮底色黄,果面着红色,着色率20%~50%,茸毛少。果肉黄色,硬溶质,风味甜,可溶性固形物含量(w)13.3%~16.2%。离核,鲜食品质佳。去皮硬度为13.7 kg·cm-2,采收持续期10 d以上,室温下可贮藏10~15 d。树势强健,树姿半开张。叶片椭圆披针形;花蔷薇型,有花粉,自花结实率和自然坐果率高。石家庄地区3月下旬萌芽,4月上旬盛花,9月中下旬果实成熟,果实发育期173 d左右,11月上旬完全落叶。美阳桃适宜在河北省中南部及相似气候地区栽培。

关键词：桃新品种美阳晚熟黄肉

千特斯拉级内爆磁压缩装置初始磁场电源系统研制

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强激光与粒子束 2024年第2期36卷 112-118页

作者：赵娟程诚李波吴刚匡学武胥超周中玉张旭平唐小松李建明仝延锦谷卓伟中国工程物理研究院流体物理研究所四川绵阳621900

初始磁场电源系统用于激励千特斯拉级内爆磁压缩装置的初级线圈产生初始磁场,是内爆磁压缩装置的关键设备。在分析千特斯拉级内爆磁压缩装置初始磁场电源需求和技术难点的基础上,系统设计了核心部件选择方案和主脉冲电路及控制系统结构... 详细信息

初始磁场电源系统用于激励千特斯拉级内爆磁压缩装置的初级线圈产生初始磁场,是内爆磁压缩装置的关键设备。在分析千特斯拉级内爆磁压缩装置初始磁场电源需求和技术难点的基础上,系统设计了核心部件选择方案和主脉冲电路及控制系统结构,研制成功一套输出电压1~40 kV可调、主放电电流脉冲上升沿约60μs、总峰值电流达3.2 MA的初始磁场电源系统,已应用于千特斯拉级内爆磁压缩装置动态试验。

关键词：爆磁压缩强磁场激励复杂电磁环境精确控制

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基于阳光服务便民图的电力营销服务系统设计

电力系统装备 2024年第3期 160-162页

作者：朱睿李小凯李剑鸣杨月强郑洁铭国网浙江省电力有限公司松阳县供电公司浙江丽水323000

随着电力体制改革的深入和新兴业务的不断涌现,电力营销服务系统面临着越来越多的挑战。为了满足用户需求,需要引入企业阳光服务便民图等架构和理念开展优化升级。文章结合电力营销业务特点,对基于阳光服务便民图的电力营销服务系统设... 详细信息

随着电力体制改革的深入和新兴业务的不断涌现,电力营销服务系统面临着越来越多的挑战。为了满足用户需求,需要引入企业阳光服务便民图等架构和理念开展优化升级。文章结合电力营销业务特点,对基于阳光服务便民图的电力营销服务系统设计进行了分析。

关键词：阳光服务便民图电力营销服务系统设计

Preparation and properties of a new porous ceramic material used in clean energy field

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Journal of Materials Science & Technology 2019年第7期35卷 1255-1260页

作者： Shuming Wang Xiaofang Zhang Fenghua Kuang Jiangshan li Yanxin Wang Ruiping Wang Yanru Wang Xin lin jianming li Department of Materials Science and Engineering University of Science & Technology BeijingBeijing100083China Ceramic Science Institute China Building Materials Academy Beijing100024China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an710072China Bohai Shipyard Group Co. Ltd.Huludao125004China

At high tem perature, the oxide redox reactions of ceria can split H2O and CO2 to produce H2 and CO, so porous ceria with high temperature resistance and high specific surface area has an important foreground in clean energy applications. In this work, a reticulated porous ceria ceramic material with interconnected porous structure was prepared by the impregnation technique using organic polyurethane sponges as template. The influences of pretreated sponge, dipping time length, pore size and sintering temperature on the porosity and strength of the porous ceria ceramics were system atically studied. With the increasing sintering temperature, the glass phase occurred and led to an increase in strength, but an decrease in porosity. Eventually, we analyzed the relationships betw een porosity and strength of these porous materials, aiming to provide theoretical and practical references for its application in clean-energy field.

关键词： Porous ceramics Porous ceria Impregnation Clean-energy

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青风藤总生物碱提取工艺及抗痛风作用

吉林农业大学学报 2024年第2期46卷 280-289页

作者：曹沛莹陈维佳宗颖时坤李建明何忠梅杜锐吉林农业大学中药材学院长春130118

以比色法测得的青藤碱含量为评价指标,采用乙醇加热回流提取法,考察乙醇浓度、液料比、提取时间和提取次数对青风藤生物碱得率的影响,用星点设计-响应面法分析从青风藤中提取青风藤总生物碱的最佳提取工艺参数;采用氧嗪酸钾腹腔注射联... 详细信息

以比色法测得的青藤碱含量为评价指标,采用乙醇加热回流提取法,考察乙醇浓度、液料比、提取时间和提取次数对青风藤生物碱得率的影响,用星点设计-响应面法分析从青风藤中提取青风藤总生物碱的最佳提取工艺参数;采用氧嗪酸钾腹腔注射联合关节腔注射尿酸钠造成大鼠痛风模型,用EliSA法测定青风藤总生物碱对痛风模型大鼠血清尿酸(UA)、白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、黄嘌呤氧化酶(XOD)、尿素氮(BUN)、肌酐(Cr)、胱抑素c(Cys-c)、谷丙转氨酶(ALT)含量以及关节滑膜组织中UA,IL-1β,IL-6,TNF-α含量的影响;采用H&E染色法观察青风藤总生物碱对痛风模型大鼠的肾脏保护作用。星点设计-响应面法分析得到青风藤总生物碱最佳提取工艺条件:10倍量75%乙醇,加热回流提取3次,每次1.8 h;青风藤总生物碱可显著改善痛风大鼠关节炎导致的足肿胀,降低模型大鼠血清中UA,IL-1β,IL-6,TNF-α,XOD,BUN,Cr,Cys-c和ALT水平,显著降低大鼠关节滑膜组织中UA,IL-1β,IL-6,TNF-α含量。HE染色结果表明,青风藤总生物碱可减轻痛风大鼠肾损伤,减少炎性浸润。上述研究结果表明,星点设计-响应面法优化青风藤总生物碱乙醇提取工艺条件,方法简单可行,建立的数学模型预测性良好,青风藤总生物碱具有显著的抗痛风作用。

关键词：青风藤生物碱痛风星点设计-响应面法

VOICE ACTIVITY DETECTION UNDER RAYLEIGH DISTRIBUTION

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Journal of Electronics(China) 2009年第4期26卷 552-556页

作者： li Yu Chen jianming Tan Hongzhou School of Information Science and Technology Sun Yat-Sen University Guangzhou 510275 China

This paper presents an improved Voice Activity Detection （VAD） algorithm which uses the Signal-to-Noise Ratio （SNR） measure. We assume that noise Power Spectral Density （PSD） in each spectral bin follows a Rayleigh distribution. Rayleigh distributions with its asymmetric tail characteristics give a better description of the noise PSD distribution than Gaussian distribution. Under this asstlmption, a new threshold updating expression is derived. Since the analytical integral of the false alarm probability, the threshold updating expression can be represented without the inverse complementary error function and low computational complexity is achieved in our system. Experimental results show that the proposed VAD outperforms or at least is comparable with the VAD scheme presented by Davis under several noise environments and has a lower computational complexity.

关键词： Statistical Voice Activity Detection (VAD) Threshold update Rayleigh distribution Computational complexity

A bio-inspired spider-like structure isolator for low-frequency vibration

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Applied Mathematics and Mechanics(English Edition) 2023年第8期44卷 1263-1286页

作者： Guangdong SUI Shuai HOU Xiaofan ZHANG Xiaobiao SHAN Chengwei HOU Henan SONG Weijie HOU jianming li State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China School of Astronautics Harbin Institute of TechnologyHarbin 150001China Yangtze River Delta HIT Robot Technology Research Institute Wuhu 241000Anhui ProvinceChina Tianjin Key Laboratory of Microgravity and Hypogravity Environment Simulation Technology Tianjin 300301China

This paper proposes a quasi-zero stiffness(QZS)isolator composed of a curved beam(as spider foot)and a linear spring(as spider muscle)inspired by the precise capturing ability of spiders in vibrating *** curved beam is simplified as an inclined horizontal spring,and a static analysis is carried out to explore the effects of different structural parameters on the stiffness performance of the QZS *** finite element simulation analysis verifies that the QZS isolator can significantly reduce the first-order natural frequency under the load in the QZS *** harmonic balance method(HBM)is used to explore the effects of the excitation amplitude,damping ratio,and stiffness coefficient on the system’s amplitude-frequency response and transmissibility performance,and the accuracy of the analytical results is verified by the fourth-order Runge-Kutta integral method(RK-4).The experimental data of the QZS isolator prototype are fitted to a ninth-degree polynomial,and the RK-4 can theoretically predict the experimental *** experimental results show that the QZS isolator has a lower initial isolation frequency and a wider isolation frequency bandwidth than the equivalent linear *** frequency sweep test of prototypes with different harmonic excitation amplitudes shows that the initial isolation frequency of the QZS isolator is 3 Hz,and it can isolate 90%of the excitation signal at 7 *** proposed biomimetic spider-like QZS isolator has high application prospects and can provide a reference for optimizing low-frequency or ultra-low-frequency isolators.

关键词： bionic isolation structure curved beam nonlinear stiffness quasi-zero stiffness(QzS) low-frequency vibration isolator

Human Cytomegalovirus Influences Host circRNA Transcriptions during Productive Infection

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Virologica Sinica 2021年第2期36卷 241-253页

作者： Jingui Deng Yujing Huang Qing Wang jianming li Yanping Ma Ying Qi Zhongyang liu Yibo li Qiang Ruan Virology Laboratory The Affiliated Shengjing HospitalChina Medical UniversityShenyang 110004China Department of Laboratory Central Hospital Affiliated to Shenyang Medical CollegeShenyang 110024China Department of Gynecology and Obstetrics The Affiliated Shengjing HospitalChina Medical UniversityShenyang 110004China Department of Obstetrics Central Hospital Affiliated to Shenyang Medical CollegeShenyang 110024China

Human cytomegalovirus(HCMV)is a double-strand DNA virus widely infected in *** RNAs(circ RNAs)are non-coding RNAs with most functions of which keep unknown,and the effects of HCMV productive infection on host circ RNA transcriptions remain *** this study,we profiled 283 host circ RNAs that significantly altered by HCMV productive infection in human embryonic lung fibroblasts(HELF)by RNA deep sequencing and bioinformatics *** these,circ SP100,circ MAP3 K1,circ PLEKHM1,and circ TRIO were validated for their transcriptions and ***,characteristics of circ SP100 were investigated by RT-q PCR and northern *** was implied that circ SP100 was produced from the sense strand of the SP100 gene containing six *** of circ SP100 and SP100 m RNA were significantly different after infection:circ SP100 levels increased gradually along with infection,whereas SP100 m RNA levels increased in the beginning and dropped at 24 h post-infection(hpi).Meanwhile,a total number of 257 proteins,including 10 HCMV encoding proteins,were identified potentially binding to cytoplasmic circ SP100 by RNA antisense purification(RAP)and mass *** analysis showed these proteins were mainly involved in the spliceosome,protein processing,ribosome,and phagosome pathways,suggesting multiple functions of circ SP100 during HCMV infection.

关键词： Human cytomegalovirus(HCMV) Productive infection Circular RNA(circRNA) circ SP100 Transcription

术前淋巴细胞与单核细胞比值在乳腺癌预后评估的探讨

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新疆医学 2024年第1期54卷 21-23,45页

作者：牛莉莉阎萍李建明闫文萍新疆昌吉州人民医院检验科新疆昌吉831100

目的探究外周血中淋巴细胞/单核细胞比值对乳腺癌患者中预后评估作用。方法收集2013年-2018年军区总医院接受手术切除的乳腺癌患者82例,分析淋巴细胞单核细胞比值与患者临床资料、预后评估的价值。结果(1)根据无疾病生存期,建立ROC曲线... 详细信息

目的探究外周血中淋巴细胞/单核细胞比值对乳腺癌患者中预后评估作用。方法收集2013年-2018年军区总医院接受手术切除的乳腺癌患者82例,分析淋巴细胞单核细胞比值与患者临床资料、预后评估的价值。结果(1)根据无疾病生存期,建立ROC曲线,根据约登指数取最佳敏感度及特异度,得出淋巴细胞单核细胞比值临界值为5.78。(2)按照LMR5.78分组,通过单因素方差分析得出术前高值LMR组与低值LMR组的临床资料中,年龄、绝经状态、TNM分期、雌激素受体、孕激素受体等均与LMR分组无统计学意义,DFS与LMR分组有统计学意义(P<0.05)。(3)生存函数分析,高LMR组乳腺癌患者的DFS明显延长,差异有统计学意义(P<0.05)。结论术前LMR≥5.78是乳腺癌预后有力的因素,术前LMR检测方便、低廉、结果稳定可作为乳腺癌患者预后的生物学标志物之一。

关键词：淋巴细胞单核细胞比值乳腺癌生存时间