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| 1 | 脊髓空洞症10例患者皮肤感觉阈值的测定显示文摘目的 研究选择性神经诊断刺激器在 10例脊髓空洞症患者中的特点和临床意义。方法 对 10例 (男 6例 ,女 4例 )经病史、临床表现和脊髓MRI检查证实的脊髓空洞症患者在双侧的拇指 (C6皮节 )和小指 (C8皮节 )进行了不同频率 (5、2 5 0和 2 0 0 0Hz)皮肤感觉阈值 (CPT)的测定 ,并与年龄匹配的健康人对照。结果 患者组C6和C8皮节对 5和 2 5 0Hz刺激感觉阈值与健康对照组比较 ,差异有非常显著意义 (P <0 .0 1) ,而 2 0 0 0Hz刺激两组之间差异无显著意义。其中 2例临床上有明显的触觉和音叉震动觉减低 ,MRI显示空洞影响脊髓前角和后角 ,2 0 0 0Hz刺激CPT阈值也有明显的增高 (C6和C8刺激CPT阈值分别为 5 32和 718)。不同频率刺激CPT的异常率是不同的 ,5Hz刺激CPT的异常率最高 (C6和C8刺激分别为 5 5 .0 %和 70 .0 % ) ,2 0 0 0Hz刺激的阳性率最低 (C6和C8刺激分别为 15 .0 %和 2 3.5 % )。结论 通过对 10例不同程度脊髓空洞症的研究 ,进一步证明了不同刺激频率CPT的测定可评价不同感觉神经的功能 ,较客观地对不同直径的感觉纤维进行定量测定。 | 崔丽英 Patrick Y.Zhu 管宇宙 | 2003 | 中华神经科杂志2003，36，6： | 3 |
| 2 | Influence of Ice on Soil Elemental Characterization via Portable X-Ray Fluorescence Spectrometry显示文摘Field portable X-ray fluorescence(PXRF)spectrometry has become an increasingly popular technique for in-situ elemental characterization of soils.The technique is fast,portable,and accurate,requiring minimal sample preparation and no consumables.However,soil moisture>20%has been known to cause fluorescence denudation and error in elemental reporting and few studies have evaluated the presence of soil moisture in solid form as ice.Gelisols(USDA Soil Taxonomy),permafrost-affected soils,cover a large amount of the land surface in the northern and southern hemispheres.Thus,the applicability of PXRF in those areas requires further investigation.PXRF was used to scan the elemental composition(Ba,Ca,Cr,Fe,K,Mn,Pb,Rb,Sr,Ti,Zn,and Zr)of 13 pedons in central and northern Alaska,USA.Four types of scans were completed:1)in-situ frozen soil,2)re-frozen soil in the laboratory,3)melted soil/water mixture in the laboratory,and 4)moisture-corrected soil.All were then compared to oven dry soil scans.Results showed that the majority of PXRF readings from in-situ,re-frozen,and melted samples were significantly underestimated,compared to the readings on oven dry samples,owing to the interference expected by moisture.However,when the moisture contents were divided into>40%and<40%groups,the PXRF readings under different scanning conditions performed better in the group with<40%moisture contents.Most elements of the scans on the melted samples with<40%moisture contents acceptably compared to those of the dry samples,with R^2 values ranging from 0.446(Mn)to 0.930(Sr).However,underestimation of the melted samples was still quite apparent.Moisture-corrected sample PXRF readings provided the best correlation to those of the dry,ground samples as indicated by higher R^2 values,lower root mean square errors(RMSEs),and slopes closer to 1 in linear regression equations.However,the in-situ(frozen)sample scans did not differ appreciably from the melted sample scans in their correlations to dry sample scans in terms of R^2 values(0.81 vs.0.88),RMSEs(1.06 vs.0.85),and slopes(0.88 vs.0.92).Notably,all of those relationships improved for the group with moisture contents<40%. | D.C.WEINDORF N.BAKR Y.ZHU A.MCWHIRT C.L.PING G.MICHAELSON C.NELSON K.SHOOK S.NUSS | 2014 | Pedosphere2014，24，1： | 3 |
| 3 | Generation of wavelength-independent subwavelength Bessel beams using metasurfaces显示文摘Bessel beams are of great interest due to their unique non-diffractive properties.Using a conical prism or an objective paired with an annular aperture are two typical approaches for generating zeroth-order Bessel beams.However,the former approach has a limited numerical aperture(NA),and the latter suffers from low efficiency,as most of the incident light is blocked by the aperture.Furthermore,an additional phase-modulating element is needed to generate higher-order Bessel beams,which in turn adds complexity and bulkiness to the system.We overcome these problems using dielectric metasurfaces to realize meta-axicons with additional functionalities not achievable with conventional means.We demonstrate meta-axicons with high NA up to 0.9 capable of generating Bessel beams with full width at half maximum about as small as~λ/3(λ=405 nm).Importantly,these Bessel beams have transverse intensity profiles independent of wavelength across the visible spectrum.These meta-axicons can enable advanced research and applications related to Bessel beams,such as laser fabrication,imaging and optical manipulation. | Wei Ting Chen Mohammadreza Khorasaninejad Alexander Y.Zhu Jaewon Oh Robert C.Devlin Aun Zaidi Federico Capasso | 2016 | Light(Science & Applications)2016，5，1： | 2 |
| 4 | Extracting phosphor‐scattered photons to improve white LED efficiency显示文摘 | N.Narendran Y.Gu J. P.Freyssinier‐Nova Y.Zhu | 2005 | phys stat sol (a)2005，，6： | 1 |
| 5 | Influence of Fungal Fermentation on the Development of Volatile Compounds in the Puer Tea Manufacturing Process显示文摘 | X.Xu M.Yan Y.Zhu | 2005 | Eng. Life Sci2005，，4： | 1 |
| 6 | Effect of Berry Size and Sodium Hydroxide Pretreatment on the Drying Characteristics of Blueberries under Infrared Radiation Heating显示文摘 | J.Shi Z.Pan T.H.McHugh D.Wood Y.Zhu R.J.Avena‐Bustillos E.Hirschberg | 2008 | Journal of Food Science2008，，6： | 1 |
| 7 | Neutrophil cell population data: useful indicators for postsurgical bacterial infection显示文摘 | Y.ZHU X.CAO Y.CHEN K.ZHANG Y.WANG K.YUAN D.XU | 2012 | International Journal of Laboratory Hematology2012，，3： | 1 |
| 8 | Influence of Fungal Fermentation on the Development of Volatile Compounds in the Puer Tea Manufacturing Process显示文摘 | X.Xu M.Yan Y.Zhu | 2005 | Eng Life Sci2005，，4： | 1 |
| 9 | 东方食品发酵在开发作为所需食品功能的工具的原则性研究显示文摘 | Y.Zhu W.Knol. | 1999 | 食品与机械1999，，5： | 1 |
| 10 | Explicit limit equilibrium solution for slope stability显示文摘 | D. Y.Zhu C. F.Lee | 2002 | Geomech2002，，15： | 1 |
| 11 | Effect of Helicobacter pylori eradication on oncogenes and cell proliferation显示文摘 | Y.Zhu X.Shu J.Chen Y.Xie P.Xu D.‐Q.Huang N.‐H.Lu | 2008 | European Journal of Clinical Investigation2008，，： | 1 |
| 12 | 查看详情显示文摘 | Y.Zhu D.Michalovich H.Wu | | 0，，： | 1 |
| 13 | Linear B-spline copulas with applications to nonparametric estimation of copulas显示文摘 | X.Shen Y.Zhu L.Song | | 0，，07： | 1 |
| 14 | A 10-bit 100-MS/s Reference-Free SAR ADC in 90nm CMOS显示文摘 | Y.Zhu C.-H.Chan U-F.Chio S.-W.Sin S.-P.U R.P.Martins and F.Maloberti | | 0，，： | 1 |
| 15 | 查看详情显示文摘 | M.Zu Q.Li Y.Zhu | | 0，，： | 1 |
| 16 | Solids suspension with axial‐flow impellers显示文摘 | J.Wu Y.Zhu P. C.Bandopadhayay L.Pullum I. C.Shepherd | 2004 | AIChE J2004，，3： | 1 |
| 17 | Voltammetric behavior and determination of phenylephrine at a glassy carbon electrode modified with multi-wall carbon nanotubes显示文摘 | Y.Zhu Z.Zhang W.Zhao | | 0，，： | 1 |
| 18 | Bioequivalence of two formulations of glucosamine sulfate 500-mg capsules in healthy male Chinese volunteers:an open-label,randomized-sequence,singledose,fasting,two-way crossover study显示文摘 | Y.Zhu J.Zou D.Xiao | | 0，，： | 1 |
| 19 | Phased Array Feed Experiments and Galactic HI Observations显示文摘The Phased Array Feed(PAF)is considered as one of the next generation receivers for radio telescopes,which can significantly enlarge the instantaneous Field-of-View of large aperture single dish radio telescopes and enable more flexible observing configurations.Study efforts on PAF development for radio telescopes have been made for more than two decades and have become more and more applicable.We report the development of an ambient-temperature 19 element L-band PAF system and the experimental results including its far field beam pattern and system temperature measurement,which achieve the expectations.Implementing the aperture array beam-forming method,we demonstrate a wide-field Galactic HI observations in the radio camera mode.The results indicate that this system might be applicable for strong Galactic transient detections.This system could be directly equipped to large telescopes like the Five-hundred-meter Aperture Spherical radio Telescope(FAST)and FAST array in the future. | B.Liu H.W.Xi D.J.Ding Z.W.Wang S.H.Yu Y.Zhu L.Yu X.Zhang J.L.Li L.J.Liu Q.Su Y.Wu C.J.Jin B.Peng | 2023 | Research in Astronomy and Astrophysics2023，23，8： | 0 |
| 20 | An Overview of FAST Real-time Fast Radio Burst Searching System显示文摘In this paper,we report a real-time Fast Radio Burst(FRB)searching system that has been successfully implemented with the 19 beam receiver of the Five-hundred-meter Aperture Spherical radio Telescope(FAST).The relatively small field of view of FAST makes the search for new FRBs challenging,but its high sensitivity significantly improves the accuracy of FRB localization and enables the detection of high-precision neutral hydrogen absorption lines generated by FRBs.Our goal is to develop an FRB searching system capable of realtime detection of FRBs that allows high-time resolution spectro-temporal studies among the repeated bursts,as well as detailed investigations of these bursts and exploration of FRB progenitor models.The data from each beam of the 19-beam receiver are fed into a high-performance computing node server,which performs real-time searches for pulses with a wide dispersion measure(DM)range of 20–10,000 pc cm^(-3) with step efficiency of 25%in real time.Then,the head node server aggregates all the candidate signals from each beam within a given time,determining their authenticity based on various criteria,including arrival time,pulse width,signal-to-noise ratio and coincidence patterns among the 19 beams.Within the 1.05–1.45 GHz operating bandwidth of the FAST 19beam receiver,the system achieves a frequency resolution of 122.07 kHz and a time resolution of 270.336μs.Subsequently,our team detected a series of bursts with a DM of 566 on 2019 August 30 confirming them as FRB121102.The FRB searching system enables the 19-beam receiver of FAST to detect repeated/one-off pulses/bursts in real time. | X.X.Zhang R.Duan V.Gajjar H.Y.Zhang P.Wang C.H.Niu D.Werthimer J.Cobb S.Y.Li X.Pei Y.Zhu D.Li | 2023 | Research in Astronomy and Astrophysics2023，23，9： | 0 |
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