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| 1 | INTERFACE REACTION IN MAGNETIC MULTILAYERS显示文摘Ta/NiO/NiFe/Ta multilayers were prepared by rf reactive and dc magnetron sputtering. The exchange coupling field (Hex) between NiO and NiFe reached 120Oe. The composition and chemical states at the interface region of NiO/NiFe were studied using the x-ray photoelectron spectroscopy (XPS) and peak decomposition technique. The results show that there are two thermodynamically favorable reactions at NiO/NiFe interface: NiO+Fe=Ni+FeO and 3NiO+2Fe = 3Ni+Fe2O3. The thickness of the chemical reaction as estimated by angle-resolved XPS was about 1-1.5nm. These interface reaction products are magnetic defects, and we believe that the Hex and the coercivity (Hc) of NiO/NiFe are affected by these defects. Moreover, the results also show that there is an 'intermixing layer' at the Ta/NiO (and NiO/Ta) interface due to a thermodynamically favorable reaction: 2Ta+5NiO=5Ni+ Ta2O5. This interface reaction has an effect on the exchange coupling as well. The thickness of the 'intermixing layer' as estimated by XPS depth-profiles was about 8-10nm. | G.H. Yu, M.H Li, F. W Zhu, X.F. Cui and J.L. Jin ( Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China) ( State key laboratory for Advanced Metals and Materials, University of Science and Technology Beijing | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，6： | 47 |
| 2 | 一种改进的Hu不变矩算法在存储介质图像识别中的应用显示文摘不同于传统的接触和射频两种方式识别存储介质,利用X射线透照目标对象作为检测手段,这种检测方法符合无损检测的特征。首先采用灰度分组(GLG)的图像增强方法和基于单像素提取边缘实现图像预处理,然后利用改进的Hu不变矩得到适合非线性不连续空间的矩不变特征向量,新的不变矩被证明作用于图像的平移、旋转和缩放具有不变性。K-means分类器根据计算不同的形态变换后图像的特征值判断存储介质种类,准确率达到95.83%,证明改进的Hu不变矩算法对被检存储介质种类的分类和识别有较好的鲁棒性和可靠性。实验结果表明,该识别方法可以使涉密的移动存储介质处于安全监控状态下,该技术应用于邮政连续包分机小像素X射线检测设备,可大大减少物联网时代通过邮路途径实施非法媒介传输。 | 原玥 王宏 原培新 常文文 化成城 | 2016 | 仪器仪表学报2016，37，5： | 22 |
| 3 | Design and Experiments of a Robotic Fish Imitating Cow-Nosed Ray显示文摘The cow-nosed ray is studied as natural sample of a flapping-foil robotic fish.Body structure, motion discipline, and dynamicfoil deformation of cow-nosed ray are analyzed.Based on the analysis results, a robotic fish imitating cow-nosed ray,named Robo-ray Ⅱ, mainly composed of soft body, flexible ribs and pneumatic artificial muscles, is developed.Structure andswimming morphology of the robotic prototype are as that of a normal cow-nosed ray in nature.Key propulsion parameters ofRobo-ray Ⅱ at normal conditions, including the St Number at linear swimming, thrust coefficient at towing are studied throughexperiments.The suitable driving parameters are confirmed considering the efficiency and swimming velocity.Swimmingvelocity of 0.16 m·s-1’and thrust coefficient of 0.56 in maximum are achieved in experiments. | Yueri Cai,Shusheng Bi,Licheng Zheng Robotics Institute,Beihang University,Beijing 100191,P.R.China | 2010 | Journal of Bionic Engineering2010，7，2： | 20 |
| 4 | 剖腹术后腹膜粘连发生机制和预防的研究现状及进展显示文摘 | 王德娟 莫家骢 谢家伦 | 2005 | 中华小儿外科杂志2005，26，5： | 17 |
| 5 | Experimental exploration and research prospect of physical bases and functional characteristics of meridians显示文摘The physical basis of meridians and acupoints (acupuncture points) is in a complex system mainly of connective tissue and interwoven with the blood capillaries, nerves, lymph vessels,etc. Elements of Ca, P, K, Fe, Zn, Mn, etc are found concentrated in the deep connective tissue structures in locations corresponding to acupoints. On this physical basis, the specific waveband of high efficiency for transmission of infrared rays exists in the collagenous fibre in a liquid crystal state. The development direction and new idea of researching on acupuncture and meridians are discussed. | Lun Fei Huansheng Cheng Deheng Cai Shixun Yang Jianrong Xu Eryu Chen Ruishan Dang Guanghong Ding Xueyong Shen Yi Tang et al. | 1998 | Chinese Science Bulletin1998，43，15： | 15 |
| 6 | 基于RayStation计划系统的宫颈癌容积旋转调强自动计划设计显示文摘目的 研究在RayStation 4.7计划系统平台上实现基于预测模型和自动优化算法的宫颈癌容积旋转调强(VMAT)全自动计划设计。方法 选取40例宫颈癌VMAT专家计划进行分析,使用主成分回归分析方法建立危及器官的体积剂量直方图(DVH)预测模型,运用IronPython编程语言在RayStation 4.7计划系统平台上实现基于预测模型的宫颈癌VMAT计划的自动创建和自动优化,并通过与手动计划的比较来评估自动计划的质量和效率。另外选取10例专家计划用于验证模型的准确性和自动计划的可行性。结果 10例宫颈癌VMAT计划测试结果显示预测模型能够很好地预测直肠、膀胱和小肠的剂量体积参数;自动计划与专家计划相当,而与原始手动计划相比,靶区的均匀性和适形性差异无统计学意义(P〉 0.05),膀胱平均V40和V50下降4.3%和1.6%,(t=2.75、5.26,P〈 0.05),直肠平均V30、V40和V50下降6.8%、5.8%和2.1%(t=2.26、3.55、5.19,P〈0.05),左右股骨头平均剂量分别下降380和322 cGy(t=5.55、7.25,P〈 0.05),小肠平均剂量差异无统计学意义(P〉 0.05)。自动计划和手动计划平均用时分别为36和53 min。结论 RayStation计划系统平台上基于IronPython语言并结合预测模型的自动计划程序能够快速高效地完成高质量的宫颈癌VMAT计划。 | 王雪桃 肖江洪 赵建玲 王强 宋莹 柏森 | 2018 | 中华放射医学与防护杂志2018，38，10： | 13 |
| 7 | Dark Matter Particle Explorer: The First Chinese Cosmic Ray and Hard γ-ray Detector in Space显示文摘The Dark Matter Particle Explorer(DAMPE) mission is one of the five scientific space science missions within the framework of the Strategic Pioneer Program on Space Science of the Chinese Academy of Science(CAS) approved in 2011. The main scientific objective of DAMPE is to detect electrons and photons in the range of 5 GeV–10 TeV with unprecedented energy resolution(1.5% at 100 GeV) in order to identify possible Dark Matter(DM) signatures. It will also measure the flux of nuclei up to above 500 TeV with excellent energy resolution(40% at 800 GeV), which will bring new insights to the origin and propagation high energy cosmic rays. With its excellent photon detection capability, the DAMPE mission is well placed for new discoveries in high energy-ray astronomy as well. | CHANG Jin | 2014 | 空间科学学报2014，34，5： | 11 |
| 8 | Findings of non-pathologic perfusion defects by CT arterial portography and non-pathologic enhancement of CT hepatic arteriography显示文摘INTRODUCTIONCTarterialportography(CTAP)andCThepaticarteriography(CTHA)arethemostsensitivemethodsofdetectinghepatocelularcarci... | LI Li, WU Pei Hong, LIN Hao Gao, LI Jin Qing, MO Yun Xian, ZHENG Lie, LU Li Xia, RUAN Chao Mei and CHEN Lin | 1998 | World Journal of Gastroenterology1998，4，6： | 11 |
| 9 | 大剂量粒细胞集落刺激因子对2.3Gy中子γ射线混合照射比格犬存活和造血重建的影响(英文)显示文摘本研究旨在观察大剂量重组人粒细胞集落刺激因子(rhG-CSF)对中子-γ射线混合照射比格犬的治疗作用。13只比格犬用90%裂变中子(n∶γ=10.6∶1)单侧一次照射2.3 Gy。实验分为照射对照(n=4)、对症治疗(n=5)和rhG-CSF治疗(n=4)3组。rhG-CSF治疗组照射后0.5和24小时2次皮下注射rhG-CSF 200μg/kg。结果表明,2.3 Gy 90%裂变中子照射可致重度骨髓型急性放射病,照射后50天3组动物分别活存1/4、3/5和4/4;rhG-CSF给药可使动物存活率由对症治疗组的60%提高至100%。与对症治疗组比较,照射后24小时内2次给予rhG-CSF可缩短中性粒细胞减少持续时间,提高中性粒细胞最低值,并促进其恢复。rhG-CSF治疗组照射后3天外周血有核细胞形成集落数量(CFU-GM、CFU-E和BFU-E)明显增加,为对症治疗组的2-5倍。照射后50天,胸骨病理切片检查结果显示,rhG-CSF治疗动物造血全部恢复正常,而对症治疗组动物仍然存在造血细胞数量严重减少。结论:照射后早期大剂量rhG-CSF 2次皮下注射联合对症治疗可明显促进2.3 Gy裂变中子-γ射线混合照射比格犬造血功能恢复,提高其存活。 | 李明 余祖胤 邢爽 欧红玲 熊国林 谢玲 赵燕芳 韩阿如娜 善亚君 柳晓兰 赵振虎 王欣茹 从玉文 罗庆良 | 2011 | 中国实验血液学杂志2011，19，4： | 9 |
| 10 | Multifractal modelling and spectrum analysis: Methods and applications to gamma ray spectrometer data from southwestern Nova Scotia, Canada显示文摘Multifractal spectrum, autocorrelation/semivariogram and power spectrum are three dif- ferent functions characterizing a field or measure from different aspects. These functions are interre- lated in such that the autocorrelation/semivariogram and power spectrum are related to the low order statistical moments (0 to 2 nd) which may determine the local multifractality (τ ″(1)) of a multifractal measure. A better understanding of the interrelationships among these three functions is important because, on one hand, the multifractal modelling characterizes a multifractal measure in a more de- tailed manner since it involves moments of all orders. On the other hand, the commonly used semivariogram and power spectrum functions can be used as alternatives to study the dominant mul- tifractal properties around the mean measure. Moreover, semivariogram and power-spectrum func- tions provide spatial and spectral information, which is highly valued in geological applications. A new fractal relation found between area and power-spectrum will be useful for investigation of new meth- ods of spatial-spectral analysis for pattern recognition, anomaly separation, classification, etc. These results have been demonstrated with the case study of modelling gamma ray spectrometer data from the mineral district, southwestern Nova Scotia, Canada. The results have shown that the values of uranium (U), thorium (Th) and potassium (K) may possess monofractal properties whereas the ratios of these values show high multifractality. The values of the ratios U/K and U/Th show relatively large variances and may provide more information for distinguishing the distinct phases of the granites, country rocks as well as possible gold mineralization-associated regional hydrothermal alteration zones. In addition, the power spectra for U, Th, K, U/Th and U/K consistently show two distinct power-law relationships for two ranges of wave number 12≤ω ≤160 km and 0≤ω ≤12 km. These properties might provide useful thresholds for separating the power-spectrum values into two types of patterns to reflect different influences of possible geological processes such as hydrothermal altera- tion in the study area. | CHENG Qiuming1,2 1. State Key Lab of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China 2. Department of Earth and Space Science and Engineering, Department of Geography, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada | 2006 | Science China Earth Sciences2006，49，3： | 8 |
| 11 | 基于Marching Cubes与Ray Casting的医学图像三维重建显示文摘本文研究了医学图像三维面绘制和体绘制的典型算法MarchingCube和RayCasting的原理和三维可视化工具包VTK的实现机制,在VC++6.0平台下,利用VTK分别实现了基于上述算法的DICOM格式的CT序列图像三维重建,并给出了关键算法和3D可视化结果。 | 李金 胡战利 | 2007 | 生命科学仪器2007，5，12： | 7 |
| 12 | 添加Dy在快淬NdFeB永磁体中的作用显示文摘在之前研究Nb元素的添加对快淬(Nd,Dy)11.5Fe82.4-mNbmB6.1永磁体磁性能、温度特性及显微组织影响的基础上,进一步研究了Dy元素在Nd11.5-nDynFe81.4Nb1B6.1(n=0,0.5,1,1.5,2)永磁体中的作用.结果表明:少量Dy元素的添加可以在不显著影响剩磁(Br)的情况下较大幅度提高磁体的内禀矫顽力(Hci),降低磁通不可逆损失(hirr).Dy在NdFeB磁体中的作用是使晶粒细小化、均匀化、规则化,提高交换耦合钉扎场(Hp),减小材料内部的散磁场,显著降低磁通不可逆损失,改善NdFeB磁体在高温下的使用性能.Dy原子进入了主相晶体结构,造成晶格畸变,使得Fe原子配位峰形状发生变化,同时对Nd原子局域结构也会产生一定影响. | 张然 刘颖 高升吉 谢治 涂铭旌 | 2008 | 物理学报2008，57，1： | 7 |
| 13 | Pre-peak on the structure factor of liquid hypoeutectic Al-Fe alloy显示文摘Using a θ-θ X ray diffractometer the structure of liquid hypoeutectic Al Fe alloy at 675℃ and its change with different thermal histories are investigated . Liquid Al is used as a reference system. It is found that a pre peak appears on the small angle part of the structure factor of the nonsuperheated hypoeutectic Al Fe alloy, but disappears after superheating whereas the structure factors of liquid Al hardly change with the different thermal histories, and no pre peak can be observed on them. The appearance of a pre peak is a mark of the intermediate range order (IRO). The pre peak is taken as the correlation between Fe atoms on the IRO length scale. Assume that the crystalline structure is the first order approximation of the liquid structure. A model structure is constructed. The basic unit is a cube formed by 8 Al atoms on its corner and one Fe atom occupying its center. The translation of such a unit along its fourbody diagonals by the length of a diagonal can meet the requirement of the Fe_Fe distance and gives a DO 3 like structure. If the vacancy among the units is filled with fcc like Al cells, the composition of the entity is about Al 7Fe, close to that of the metastable phase Al 6Fe from rapid solidification. It is speculated that there are Al 6Fe like clusters in the liquid hypoeutectic Al Fe alloy. | Jingyu Qin Xiufang Bian Weimin Wang Jiaji Ma Changye Xu | 1998 | Chinese Science Bulletin1998，43，14： | 7 |
| 14 | Clinical significance of mesenteric panniculitis-like abnormalities on abdominal computerized tomography in patients with malignant neoplasms显示文摘AIM To clarify the association of malignancy with mesenteric panniculitis-like changes on computed tomography(CT).METHODS All abdominal CT scans performed at North Shore University HealthS ystem showing mesenteric panniculitis from January 2005 to August 2010 were identified in the Radnet(Rad Net Corporation, Los Angeles, CA) database. Patients with a new or known diagnosis of a malignancy were included for this analysis. Longitudinal clinical histories were obtained from electronic medical records.RESULTS In total, 147794 abdominal CT scans were performed during the study period. Three hundred and fiftynine patients had mesenteric panniculitis(MP)-like abnormalities on their abdominal CT. Of these patients, 81 patients(22.6%) had a known history of cancer at the time of their CT scan. Nineteen(5.3%) had a new diagnosis of cancer in concurrence with their CT, but the majority of these(14/19, 74%) were undergoing CT as part of a malignancy evaluation. Lymphomas were the most common cancers associated with MPlike findings on CT(36 cases, 36%), with follicular lymphoma being the most frequent subtype(17/36). A variety of solid tumors, most commonly prostate(7) and renal cell cancers(6) also were seen. CT follow up was obtained in 56 patients. Findings in the mesentery were unchanged in 45(80%), worsened in 6(11%), and improved in 5 patients(9%). Positron emission tomography(PET) scans performed in 44 patients only showed a positive uptake in the mesenteric mass in 2 patients(5%). CONCLUSION A new diagnosis of cancer is uncommon in patients with CT findings suggestive of MP. MP-like mesenteric abnormalities on CT generally remain stable in patients with associated malignancies. PET scanning is not recommended in the evaluation of patients with mesenteric panniculitis-like findings on CT. | Eli D Ehrenpreis Grigory Roginsky Richard M Gore | 2016 | World Journal of Gastroenterology2016，22，48： | 7 |
| 15 | Biaggini Ray Set间接粘接系统在舌侧正畸中的应用显示文摘目的 介绍一种粘接舌侧托槽的间接粘接系统。方法 将BiagginiRaySet应用到舌侧正畸 ,介绍整个粘接系统的原理和具体操作步骤。结果 该系统托槽定位精确 ,不需要进行排牙试验。结论 将RaySet间接粘接的方法和理念应用到舌侧正畸中 ,能达到满意的托槽定位效果。 | 梁炜 林久祥 徐宝华 吴威 | 2004 | 口腔医学2004，24，2： | 7 |
| 16 | Role of cardiac CTA in estimating left ventricular volumes and ejection fraction显示文摘Left ventricular ejection fraction(LVEF)is an impor-tant predictor of cardiac outcome and helps in makingimportant diagnostic and therapeutic decisions suchas the treatment of different types of congestive heartfailure or implantation of devices like cardiac resynchro-nization therapy-defibrillator.LVEF can be measuredby various techniques such as transthoracic echo-cardiography,contrast ventriculography,radionuclidetechniques,cardiac magnetic resonance imaging andcardiac computed tomographic angiography(CTA).Thedevelopment of cardiac CTA using multi-detector rowCT(MDCT)has seen a very rapid improvement in thetechnology for identifying coronary artery stenosis andcoronary artery disease in the last decade.During theacquisition,processing and analysis of data to studycoronary anatomy,MDCT provides a unique opportunityto measure left ventricular volumes and LVEF simulta-neously with the same data set without the need foradditional contrast or radiation exposure.The develop-ment of semi-automated and automated software to measure LVEF has now added uniformity,efficiency and reproducibility of practical value in clinical practice rather than just being a research tool.This article will address the feasibility,the accuracy and the limitations of MDCT in measuring LVEF. | Robin Man Singh Balkrishna Man Singh Jawahar Lal Mehta | 2014 | World Journal of Radiology2014，6，9： | 5 |
| 17 | Comparison of the dark signal degradation induced by Gamma ray, proton, and neutron radiation in pinned photodiode CMOS image sensors显示文摘Dear editor,CMOS image sensors (CISs) present numerous advantages and have become feasible alternatives for CCDs (charge coupled devices) in satellite imaging system, nuclear industry, and particle detection (1–3)However, CISs used in these applications are often operated under harsh radiation environments and are susceptible to total ionizing dose (TID) and displacement damage. | Zujun WANG Yuanyuan XUE Wei CHEN Rui XU Hao NING Baoping HE Zhibin YAO Minbo LIU Jiangkun SHENG Wuying MA Guantao DONG | 2019 | Science China(Information Sciences)2019，62，6： | 4 |
| 18 | FlexRay总线物理层应用解析显示文摘Flex Ray总线作为一种高速率、冗余总线,有着广阔的应用前景。为了让Flex Ray总线开发者能设计出性能优异的Flex Ray总线系统,对Flex Ray总线设计的关键点包括:电缆与连接器选型、接口电路设计、组网技术,通过列表法对关键选型参数进行了论述,以便设计者能快速开发出满足Flex Ray总线物理层协议的总线系统。 | 韩强 牛德青 张锐 李林珊 | 2016 | 兵工自动化2016，35，5： | 4 |
| 19 | GAMMA-RAYS INDUCTION OF MUTATION IN CONCHOCELIS OF PORPHYRA YEZOENSIS显示文摘Free living conchocelis of Porphyra yezoensis Ueda (Bangiales, Rhodophyta) were treated with 6 0Co γ rays of different doses (ranging from 100 Gy to 1000 Gy) to induce mutation. Most of the conchocelis maintained the capability of penetrating into shells, growing and forming colonies in shells, but their vitality was seriously impaired by the irradiation of γ rays. A few conchocelis pigments were mutagenized directly into different color pigment mutants whose progeny conchospores and foliose thalli had the same colors. However, some irradiated conchocelis did not show the change in color at the conchocelis stage. The pigment mutation could be observed only after the conchospores of these conchocelis had germinated into young foliose thalli. Irradiation of low dose (100 Gy) promoted the growth of thallus and many with altered morphology were observed. Conchospores of the irradiated conchocelis attached to the culture nets were cultured in the sea, and growth of these progenies was observed and measured. | 王素娟 郑元铸 马凌波 许璞 朱建一 | 2000 | Chinese Journal of Oceanology and Limnology2000，18，1： | 3 |
| 20 | Marine Mobile Wireless Channel Modeling Based on Improved Spatial Partitioning Ray Tracing显示文摘In 5G era,it is expected to achieve wireless network coverage including offshore areas.Modeling of marine wireless channels is the basis of constructing a marine communication system.In this paper,a communication scene between an unmanned aerial vehicle(UAV)and a boat is simulated to study the marine wireless channel.Firstly,an improved spatial partitioning ray tracing algorithm is proposed to track the propagation path of electromagnetic waves at sea surface.Secondly,a mobile channel is simulated and modeled based on the track results.Finally,a loss measurement is carried out in the coastal waters based on the simple wireless channel loss measuring platform,and a path loss propagation model is built.Then we compare the actual measurement data with the simulation results and find that the two are have good consistency,which further verifies the reliability of the simulation. | Zhibin Gao Bang Liu Zhipeng Cheng Canbin Chen Lianfen Huang | 2020 | China Communications2020，17，3： | 3 |
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