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| 1 | 健康成人动脉粥样硬化斑块易感性和血栓形成的生物标志物变化与极端空气污染水平相关:北京AIRCHD研究显示文摘空气污染与心血管事件恶化的病理生理机制尚不完全清楚。该文探讨环境空气污染是否可以触发易损斑块.通过全身炎症途径促进血栓形成。方法:在北京AIRCHD研究中.2014-2016年间对73名健康成年人[年龄(23.3±5.4)岁]进行了随访。研究者使用线性混合效应模型评估了空气污染物与动脉粥样硬化斑块易损性、血栓形成和炎症相关生物标志物之间的关系,并使用中介效应分析(mediation analyses)探讨涉及的生物学途径。通过受试者工作特征(receiver operating characteristic,ROC)曲线分析评估每种生物标记物预测环境空气污染暴露的能力。 | 刘青 叶鹏 Xu H Wang T Liu S Brook RD Feng B Zhao Q Song X Yi T Chen J Zhang Y Wang Y Zheng L Rajagopalan S Li J Huang W | 2019 | 中华高血压杂志2019，27，4： | 13 |
| 2 | 全颗粒饲料对奶牛生产性能的影响显示文摘饲料中的中性洗涤纤维(NDF)含量和饲料颗粒直径是影响瘤胃功能的重要因素。试验评估了以颗粒饲料为主的奶牛瘤胃健康情况、NDF消化率和生产性能。选取8头荷斯坦母牛(336±30 d,体重346±35 kg),随机分配到交叉重复试验组中,奶牛安置于牛栏,自由采食。试验期为3周,前两周是适应期,最后一周为数据收集期。各组饲粮原料相同,但物理形式不同,分为全混合日粮(TMR)和颗粒料(直径=8 mm)。两组间物理有效NDF(pe NDF)不同,TMR组为39.8%,颗粒料组为11.8%。在试验过程中,干物质采食量(DMI)、饮水量、瘤胃反刍时间、瘤胃温度和pH情况均记录。3周后收集粪样,确定潜在的可消化NDF总消化率(pdNDF)。每阶段结束后计算平均日增重和饲料转化率。颗粒料组的DMI、DMI/体重和饮水量更高。而两组间平均日增重和饲料转化率无显著差异。颗粒料组的瘤胃反刍时间为241 min·d-1低于TMR组的507 min·d-1。饲料的不同物理外形对瘤胃温度、瘤胃pH无显著影响。TMR组的pdNDF总消化率为90.25%高于颗粒料组的86.82%。试验结果表明,动物易接受完整的颗粒饲料,DMI较高,且反刍时间减少,但瘤胃pH无显著变化。TMR组的pdNDF消化率显著增加。尽管两组奶牛在DMI和纤维消化方面表现不同,但总体表现相似,两组饲料的保存时间与其物理形式有关。在短期内,提供能满足NDF需求的完全颗粒饲料可改善瘤胃健康状况和动物生产性能,而较长时间的数据则需要进一步试验。 | Wang J Yang M Cao M Lin Y Che L Q Duraipandiyan V Al-Dhabi N A Fang Z F Xu S Y Feng B Liu G Wu D Bonfante E Palmonari A Mammi L Canestrari G Fustini M Formigoni A | 2016 | 饲料博览2016，0，12： | 2 |
| 3 | Terahertz Semiconductor Quantum Well Devices显示文摘For eventually providing terahertz science with compact and convenient devices,terahertz (1~10THz) quantum-well photodetectors and quantum-cascade lasers are investigated.The design and projected detector performance are presented together with experimental results for several test devices,all working at photon energies below and around optical phonons.Background limited infrared performance (BLIP) operations are observed for all samples (three in total),designed for different wavelengths.BLIP temperatures of 17,13,and 12K are achieved for peak detection frequencies of 9.7THz(31μm),5.4THz(56μm),and 3.2THz(93μm),respectively.A set of THz quantum-cascade lasers with identical device parameters except for doping concentration is studied.The δ-doping density for each period varies from 3.2×1010 to 4.8×1010cm-2.We observe that the lasing threshold current density increases monotonically with doping concentration.Moreover,the measurements for devices with different cavity lengths provide evidence that the free carrier absorption causes the waveguide loss also to increase monotonically.Interestingly the observed maximum lasing temperature is best at a doping density of 3.6×1010cm-2. | Liu H C Luo H Ban D Waichter M Song C Y Wasilewski Z R Buchanan M Aers G C SpringThorpe A J Cao J C Feng S L Williams B S Hu Q | 2006 | Journal of Semiconductors2006，27，4： | 2 |
| 4 | Influence of Eutrophication on the Distribution of Total Mercury and Methylmercury in Hydroelectric Reservoirs显示文摘 | Meng Bo Feng X B Chen C X Qiu G L Sommar J Guo Y N Liang P Wan Q | 2010 | EN2010，，5： | 2 |
| 5 | Encapsulation of enzymes in mesoporous host materials via the nonsurfactant- templated sol-gel process 显示文摘 | Wei Y Xu J G Feng Q W | 2000 | Materials Letters2000，44，1： | 1 |
| 6 | Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores 显示文摘 | Zhao D Y Feng J L Huo Q S | 1998 | Science1998，279，： | 1 |
| 7 | Modeling and algorithm on a class of mechanical systems with unilateral constraints显示文摘 | Feng Q Tu J | 2006 | Archive of Applied Mechanics2006，76，12： | 1 |
| 8 | Adsorption of 2,4,6-trinitrotoluene on a novel adsorption material PEI/SiO2 显示文摘 | An F Gao B J Feng X Q | 2009 | Journal of Hazardous Materials2009，166，23： | 1 |
| 9 | Nonionic triblock and star diblock copolymer and oligomeric surfactant syntheses of highly ordered, hydrothermally stable, mesoporous silica structures显示文摘 | Zhao D Huo Q Feng J | 1998 | Journal of the American Chemical Society1998，120，： | 1 |
| 10 | Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores显示文摘 | ZHAO D FENG J HUO Q MELOSH N FREDRICKSON G H CHMELKA B F STUCKY G D | 1998 | Science1998，279，5350： | 1 |
| 11 | Triblock Copolymer Syntheses of Mesoporous Silica with Periodic 50 to 300 Angstrom Pores显示文摘 | Zhao D Y Feng J L Huo Q S | 1998 | Science1998，279，： | 1 |
| 12 | Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores 显示文摘 | Zhao D Feng Y J Huo Q | 1998 | Science1998，279，5350： | 1 |
| 13 | Analysis of extension propagation process of an interface crack between belts of a radial tire using a finite element method 显示文摘 | Feng X J Yan X Q Wei Y T | 2004 | Applied Mathematical Modelling2004，28，2： | 1 |
| 14 | Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstorm pores 显示文摘 | Zhao D Y Feng J L Huo Q S | 1998 | Science1998，279，5350： | 1 |
| 15 | 查看详情显示文摘 | Liao Y Wang Y Q Feng X X Wang W C Xu F J Zhang L Q | | 0，，： | 1 |
| 16 | IrrE, a global regulator of extreme radiation resistance inDeinococcus radiodurans, enhances salt tolerance in Escherichia coli and Brassica napus显示文摘 | Pan J Wang J Zhou Z Yan Y Zhang W Lu W Ping S Dai Q Yuan M Feng B Hou X Zhang Y Ma R Liu T Feng L Wang L Chen M Lin M | 2009 | PloS One2009，4，2： | 1 |
| 17 | Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores显示文摘 | Zhao D Y Feng J L Huo Q S | 1998 | Science1998，279，23： | 1 |
| 18 | Ligustilide prevents cognitive impairment and attenuates neurotoxicity in D-galactose induced aging mice brain显示文摘 | Li J J Zhu Q Lu Y P Zhao P Feng Z B Qian Z M | 2015 | Brain Res2015，1595，： | 1 |
| 19 | Effect of the Woods-Saxon nuclear distribution on the chiral magnetic field in Relativ- istic Heavy-ion Collisions显示文摘 | Mo Y J Feng S Q Shi Y F | 2013 | Physical Review C2013，88，88： | 1 |
| 20 | The TIL commissioning and performance显示文摘 | X Zhang W Zheng X Wei F Jing Z Sui K Zheng Q Xu X Yuan X Jiang L Yang P Ma M Li J Wang D Hu S He F Li Z Peng B Feng H Zhou L Guo X Li X Zhang J Su Q Zhu H Yu R Zhao C Ma H He D Fan W Zhang | 2008 | Journal of Physics: Conference Series2008，，3： | 1 |
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