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Traffic condition estimation with pre-selection space time model

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Journal of Central South University 2012年第1期19卷 206-212页

作者： DONG Hong-hui SUN Xiao-liang JIA li-min li Hai-jian QIN Yong State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing 100044China

A pre-selection space time model was proposed to estimate the traffic condition at poor-data-detector,especially non-detector *** space time model is better to integrate the spatial and temporal information ***,the influencing factors of the "cause nodes" were studied,and then the pre-selection "cause nodes" procedure which utilizes the Pearson correlation coefficient to evaluate the relevancy of the traffic data was ***,only the most relevant data were collected to compose the space time *** experimental results with the actual data demonstrate that the model performs better than other three models.

关键词： traffic condition estimation space time model pre-selection

(EC+β^(+)) Decay of ^(128)Ce

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Chinese Physics Letters 2000年第11期17卷 787-788页

作者： li Zhan-kui XU Shu-Wei XIE Yuan-Xiang ZHANG Tian-Mei MA Rui-Chang GUO Ying-Xiang GE Yuan-Xiu WANG Chun-Fang GUO Bin XING jian-Ping DU Jin-Zhou Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 Department of Modern Physics Lanzhou UniversityLanzhou 730000

The (EC+β^(+)) decay of ^(128)Ce was reinvestigated in the^(116)Sn (l6O, 4n) reaction by using a helium-jet tape transport system. The decay γ rays of ^(128)Ce were unambiguously described from those of ^(129)Ce after taking the comparing experiments of ^(16)O+^(116)Sn and ^(16)O+^(117)Sn. Based on x-γ and γ-γ coincidence measurements, a detailed (EC+β^(+)) decay scheme of ^(128)Ce has been proposed which modifies the previous one, and takes accounts of 100 observed γ-lines.

关键词： decay coincidence

Causal gene identification and desirable trait recreation in goldfish

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Science China(life Sciences) 2022年第12期65卷 2341-2353页

作者： Peng Yu Yang Wang Zhi li Hui Jin liang-liang li Xiao Han Zhong-Wei Wang Xiao-li Yang Xi-Yin li Xiao-Juan Zhang li Zhou jian-Fang Gui State Key Laboratory of Freshwater Ecology and Biotechnology Hubei Hongshan LaboratoryThe Innovation Academy of Seed DesignInstitute of HydrobiologyChinese Academy of SciencesWuhan 430072China University of Chinese Academy of Sciences Beijing 100049China

Goldfish(Carassius auratus) have long fascinated evolutionary biologists and geneticists because of their diverse morphological and color *** genome-wide association studies have provided a clue to uncover genomic basis underlying these phenotypic variations,but the causality between phenotypic and genotypic variations have not yet been ***,we edited proposed candidate genes to recreate phenotypic traits and developed a rapid biotechnology approach which combines gene editing with high-efficiency breeding,artificial gynogenesis,and temperature-induced sex reversal to establish homozygous mutants within two generations(approximately eight months).We first verified that low-density lipoprotein receptorrelated protein 2B(lrp2a B) is the causal gene for the dragon-eye variation and recreated the dragon-eye phenotype in side-view Pleated-skirt lion-head ***,we demonstrated that the albino phenotype was determined by both homeologs of oculocutaneous albinism type II(oca2),which has subfunctionalized to differentially govern melanogenesis in the goldfish body surface and ***,we determined two causal genes for dragon-eye and albino phenotypes,and created four stable homozygous strains and more appealing goldfish with desirable *** developed biotechnology approach facilitates precise genetic breeding,which will accelerate re-domestication and recreation of phenotypically desirable goldfish.

关键词： goldfish precise molecular design breeding re-domestication gene editing ornamental traits dragon-eye albino

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Thermoelectric performance enhancement by manipulation of Sr/Ti doping in two sublayers of Ca_(3)Co_(4)O_(9)

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Journal of Advanced Ceramics 2020年第6期9卷 769-781页

作者： li ZHANG Yichen liU Thiam Teck TAN Yi liU jian ZHENG Yanling YANG Xiaojiang HOU Lei FENG Guoquan SUO Xiaohui YE Sean li Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and EngineeringShaanxi University of Science&TechnologyXi’an 710021China UNSW Materials and Manufacturing Futures Institute School of Material Science and EngineeringThe University of New South WalesKensingtonNew South Wales2052Australia

Thermoelectric(TE)performance of Ca_(3)Co_(4)O_(9)(CCO)has been investigated extensively via a doping strategy in the past ***,the doping sites of different sublayers in CCO and their contributions to the TE performance remain unrevealed because of its strong correlated electronic *** this work,Sr and Ti are chosen to realize doping at the[Ca_(2)CoO_(3)]and[CoO_(2)]sublayers in *** was found that figure of merit(ZT)at 957 K of Ti-doped CCO was improved 30% than that of undoped CCO whereas 1 at% Sr doping brought about a 150% increase in ZT as compared to undoped *** significant increase in electronic conductivity and the Seebeck coefficient are attributed to the enhanced carrier concentration and spin-entropy of Co^(4+) originating from the Sr doping effects in[Ca_(2)CoO_(3)]sublayer,which are evidenced by the scanning electron microscope(SEM),Raman,Hall,and X-ray photoelectron spectroscopy(XPS)***,the reduced thermal conductivity is attributed to the improved phonon scattering from heavier Sr doped Ca site in[Ca_(2)CoO_(3)]*** findings demonstrate that doping at Ca sites of[Ca_(2)CoO_(3)]layer is a feasible pathway to boost TE performance of CCO material through promoting the electronic conductivity and the Seebeck coefficient,and reducing the thermal conductivity *** work provides a deep understanding of the current limited ZT enhancement on CCO material and provides an approach to enhance the TE performance of other layered structure materials.

关键词： layered structures manipulation doping sites Ca_(3)Co_(4)O_(9)(CCO) spin-entropy thermoelectric performance

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云南省淡水螺广州管圆线虫感染情况调查分析

动物医学进展 2025年第1期46卷 123-128页

作者：董路段博芳杨建发杨红梅李坤马洲董星和李永华邹丰才云南省动物疫病预防控制中心云南昆明650201 云南农业大学动物医学院云南昆明650201 景洪市勐龙镇农业农村发展服务中心云南景洪666112 保山市动物卫生监督所云南保山678000 武定县动物疫病预防控制中心云南武定651600

为了查明云南省淡水螺广州管圆线虫感染情况和分布特点,从野外和农贸市场采集5种螺共4502份,取其肌肉用组织压片法镜检广州管圆线虫幼虫,再提取组织DNA,采用PCR扩增广州管圆线虫ITS基因。镜检发现,在福寿螺中发现广州管圆线虫第Ⅲ期幼虫... 详细信息

为了查明云南省淡水螺广州管圆线虫感染情况和分布特点,从野外和农贸市场采集5种螺共4502份,取其肌肉用组织压片法镜检广州管圆线虫幼虫,再提取组织DNA,采用PCR扩增广州管圆线虫ITS基因。镜检发现,在福寿螺中发现广州管圆线虫第Ⅲ期幼虫;PCR扩增显示:5份样品为广州管圆线虫阳性,总阳性率为0.111%(5/4502);不同地区间,昆明市阳性率最高(0.231%,4/1734),德宏州(0.221%,1/453)次之;不同淡水螺种类中,福寿螺阳性率为0.192%(4/2081),环棱螺阳性率为0.160%(1/624),其余3种螺未检出;不同采样环境下,农贸市场阳性率为0.192%(4/2083),野外环境阳性率为0.041%(1/2419)。不同螺种类和采样环境感染率有统计学意义(P<0.05)。研究结果获悉了云南省部分淡水螺广州管圆线虫的感染情况,为云南省广州管圆线虫病的防控提供了重要基础数据。

关键词：淡水螺广州管圆线虫 ITS基因感染

Soil CO_2 and N_2O Emissions in Maize Growing Season Under Different Fertilizer Regimes in an Upland Red Soil Region of South China

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Journal of Integrative Agriculture 2014年第3期13卷 604-614页

作者： ZHANG Xu-bo WU lian-hai SUN Nan DING Xue-shan li jian-wei WANG Bo-ren li Dong-chu Key Laboratory of Crop Nutrition and Fertilization Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Sustainable Soils and Grassland Systems Department Rothamsted Research Department of Botany and Microbiology University of Oklahoma

Upland red soils have been identified as major CO2 and N2O sources induced by human activities such as fertilization. To monitor characteristics of soil surface CO2 and N2O fluxes in cropland ecosystems after continuous fertilizer applications over decades and to separate the respective contributions of root and heterotrophic respiration to the total soil CO2 and N2O fluxes, the measurements of soil surface CO2 and N2O fluxes throughout the maize growing season in 2009 were carried out based on a fertilization experiment （from 1990） through of the maize （Zea mays L.） growing season in red soil in southern China. Five fertilization treatments were chosen from the experiment for study： zero-fertilizer application （CK）, nitrogen-phosphorus- potassium （NPK） fertilizer application only, pig manure （M）, NPK plus pig manure （NPKM） and NPK with straw （NPKS）. Six chambers were installed in each plot. Three of them are in the inter-row soil （NR） and the others are in the soil within the row （R）. Each fertilizer treatment received the same amount of N （300 kg ha-1 yr-1）. Results showed that cumulative soil CO2 fluxes in NR or R were both following the order： NPKS〉M, NPKM〉NPK〉CK. The contributions of root respiration to soil CO2 fluxes was 40, 44, 50, 47 and 35% in CK, NPK, NPKM, M and NPKS treatments, respectively, with the mean value of 43%. Cumulative soil N2O fluxes in NR or R were both following the order： NPKS, NPKM〉M〉NPK〉CK, and soil N2O fluxes in R were 18, 20 and 30% higher than that in NR in NPKM, M and NPKS treatments, respectively, but with no difference between NR and R in NPK treatment. Furthermore, combine with soil temperature at -5 cm depth and soil moisWxe （0-20 cm） together could explain 55-70% and 42-59% of soil CO2 and N2O emissions with root interference and 62- 78% and 44-63% of that without root interference, respectively. In addition, soil CO2 and N2O flUXeS per unit yield in NPKM （0.55 and 0.10 kg C t^-1） and M （0.65 and 0.13 g N t^-1） treatments were

关键词： greenhouse gas emissions carbon dioxide nitrous oxide manure mineral fertilizers straw return South China

Neoadjuvant chemotherapy for locally advanced cervical cancer reduces surgical risks and lymph-vascular space involvement

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Chinese Journal of Cancer 2011年第9期30卷 645-654页

作者： Yue Wang Guang Wang li-Hui Wei ling-Hui Huang jian-liu Wang Shi-Jun Wang Xiao-Ping li Dan-Hua Shen Dong-Mei Bao jian Gao Department of Obstetrics ＆ Gynecology People＇s Hospital Peking University Beijing 100044 P. R. China Department of Obstetrics ＆ Gynecology Hangu Hospital Tianjin 300480 P. R. China Department of Obstetrics ＆ Gynecology Jinghong Municipal Hospital Jinghong Yunnan 666100 P. R. China Department of Pathology People＇s Hospital Peking University Beijing 100044 P. R. China Department of Radiology People＇s Hospital Peking University Beijing 100044. p. R. China.

Neoadjuvant chemotherapy(NACT),which can reduce the size and therefore increase the resectability of tumors,has recently evolved as a treatment for locally advanced cervical *** has been reported to decrease the risk of pathologic factors related to prognosis of cervical *** further assess the effects of NACT on surgery and the pathologic characteristics of cervical cancer,we reviewed 110 cases of locally advanced cervical cancer treated with radical hysterectomy with or without NACT at the People's Hospital of Peking University between January 2006 and December *** 110 patients,68 underwent platinum-based NACT prior to surgery(NACT group) and 42 underwent primary surgery treatment(PST group).Our results showed 48 of 68(70.6%) patients achieved a complete response or partial response to *** blood loss,operation time,and number of removed lymph nodes during surgery,as well as complication rates during and after surgery were not significantly different between the NACT group and the PST *** rates of deep stromal invasion,positive parametria,positive surgical vaginal margins,and lymph node metastasis were not significantly different between the two ***,the rate of lymph-vascular space involvement(LVSI) was significantly lower in the NACT group than in the PST group(P = 0.021).In addition,the response rate of NACT was significantly higher in the patients with chemotherapeutic drugs administrated via artery than via *** results suggest that NACT is a safe and effective treatment for locally advanced cervical cancer and significantly decreases the rate of LVSI.

关键词：手术治疗子宫颈癌化疗药物淋巴结晚期间隙血管风险

Novel laser Doppler tachometer

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Chinese Optics Letters 2021年第1期19卷 24-30页

作者： Wentao li jian Zhou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073China

In order to improve the accuracy and universality of the rotational speed measurement,an instantaneous rotational speed measurement method based on laser Doppler technology is *** composition and working principle of the new system are discussed in *** and experimental results show that the new rotational speed measurement system belongs to the non-contact method,which eliminates the quantization error of the contact method and greatly improves the applicability and *** to the commonly used method,the measurement accuracy of the new rotational speed measurement system will not be affected by the system’s installation angle deviation,and it does not need to measure the radius of the rotating body,so the influence of the radius fluctuation of the rotating body on the measurement accuracy can be avoided while outputting the rotational speed in real *** relative error of the rotational speed measurement is less than 0.06%(1σ).

关键词： laser Doppler technology rotational speed measurement non-contact real time

Phenolic constituents from the roots of Alangium chinense

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Chinese Chemical Letters 2017年第1期28卷 32-36页

作者： Yan Zhang Yun-Bao liu Yong li Shuang-Gang Ma li li Jing Qu Dan Zhang jian-Dong jiang Shi-Shan Yu State Key Laboratory of Bioacrive Substance and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China

Three new phenolics（1–3） and twenty-eight known compounds（4–31） were isolated from an ethanolic extract of roots of Alangium chinense. Compound 11 exhibited antiviral activity against Coxsackie virus B3 with IC50 values of 16.89 mmol/L. Compounds 1, 10–17, 19–21, and 23 showed strong antioxidant activity against Fe^2＋-cysteine-induced rat liver microsomal lipid peroxidation, with IC50 values of 0.14–8.18 mmol/L.

关键词： Phenolics Alangium chinense Antiviral Coxsackie virus B3 Antioxidant