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Temporal electronic structure of non-resonant Raman excited virtual state of P-nitroaniline by 514 nm excitation via bond polarisabilities
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作者 王培杰 方炎 吴国祯 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第11期264-269,共6页
We have studied the temporal bond polarisabilities of para-nitroaniline from the Raman intensities by the algorithm proposed by Wu et al. in 1987 (Tian B, Wu G, Liu G 1987 J. Chem. Phys. 87 7300). The bond polarisab... We have studied the temporal bond polarisabilities of para-nitroaniline from the Raman intensities by the algorithm proposed by Wu et al. in 1987 (Tian B, Wu G, Liu G 1987 J. Chem. Phys. 87 7300). The bond polarisabilities provide much information concerning the electronic structure of the non-resonant Raman excited virtual state. At the initial moment by the 514.5 nm excitation, the tendency of the excited electrons (mapped out by the bond polarisabilities) is to spread to the molecular periphery, and the electronic structure of the Raman virtual state is close to the pseudoquinonoidic state. When the final stage of relaxation is approached, the bond polarisabilities of those peripheral bonds relax faster than those closer to the molecular core, the phenyl ring. The molecule is in the benzenoidic form as demonstrated by the bond polarisabilities after relaxation. 展开更多
关键词 Raman excited virtual state bond polarisabilities RELAXATION
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人体关节活动度测量系统 被引量:13
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作者 胡超 葛云 陈颖 《中国医学物理学杂志》 CSCD 2016年第1期34-38,共5页
关节活动度是康复学中鉴定肢体伤残等级和评定关节康复程度的一项重要指标。目前常用的测量方法有通用量角器、照相法和X光,但这些方法在精度、稳定性和实时性方面都无法满足临床需要。本文提出了将光学定位设备NDI Polaris Spectra应... 关节活动度是康复学中鉴定肢体伤残等级和评定关节康复程度的一项重要指标。目前常用的测量方法有通用量角器、照相法和X光,但这些方法在精度、稳定性和实时性方面都无法满足临床需要。本文提出了将光学定位设备NDI Polaris Spectra应用于人体关节活动度的测量,从而提高精确度、可重复性和实时性。本方法首先将反光小球固定在人体的骨性标志点上,然后利用NDI Polaris Spectra追踪反光小球的位置。NDI Polaris Spectra会将反光小球的三维坐标数据反馈给计算机,根据这些反光小球的三维坐标数据使用最小二乘法拟合出肢体运动的轨迹和轴心,从而计算出关节运动的角度。该方法测量结果的精度可以达到0.5°,标准差不超过0.02°,精度和稳定性都优于现有方法,足以满足临床需要。 展开更多
关键词 关节活动度 最小二乘法 NDI POLARIS SPECTRA
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利用Polmon实现Polaris航海模拟器的管理 被引量:1
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作者 卢天喆 《青岛远洋船员学院学报》 2009年第4期63-66,共4页
我院从2002年起,前后引进了三套挪威KONSBERG公司的第六代船舶操纵模拟器产品:Polaris航海模拟器。Polaris模拟器是个复杂的大型计算机仿真系统,管理维护起来也很繁琐。本文介绍了如何利用Polmon实现Polaris模拟器集中、方便、快捷的管理。
关键词 Polaris航海模拟器 Polmon管理 监控
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两种支架对中青年男性输尿管钬激光碎石术后勃起功能和生活质量影响的对比分析 被引量:11
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作者 王荣 许斌 《中华男科学杂志》 CAS CSCD 北大核心 2020年第1期48-53,共6页
目的:对比分析中青年男性患者输尿管镜钬激光碎石术后留置不同的输尿管支架对勃起功能和生活质量的影响。方法:118例中青年男性输尿管结石接受输尿管镜钬激光碎石的患者根据留置的支架管随机分为双J管组(n=60)和Polaris loop支架组(n=5... 目的:对比分析中青年男性患者输尿管镜钬激光碎石术后留置不同的输尿管支架对勃起功能和生活质量的影响。方法:118例中青年男性输尿管结石接受输尿管镜钬激光碎石的患者根据留置的支架管随机分为双J管组(n=60)和Polaris loop支架组(n=58),比较两组患者围手术期一般资料,记录不良事件及术后的随访结果等指标。结果:两组术前年龄、BMI、身高、结石直径及肾积水程度、手术时间、术中不良事件、术后保留支架时间等无统计学差异。术后4周留置支架期间,Polaris loop支架组在炎症指标、下尿路症状(LUTS)、排尿时腰疼、生活质量(QOL)评分、IPSS评分以及视觉疼痛模拟评分(VAS)等相关临床指标与双J管组比较差异均有统计学意义(P<0.05)。Polaris loop支架管组和双J管组患者术后第2、4、6周IIEF评分分别为[(8.44±2.10)分vs(12.50±1.78)分,P=0.003]、[(8.65±1.90)分vs(13.42±1.88)分,P=0.002]、[(13.57±1.01)分vs(17.38±2.47)分,P=0.003],术后第8周后复查两组患者IIEF评分无显著差异。结论:输尿管镜钬激光碎石术后留置输尿管支架影响中青年男性患者的生活质量和勃起功能。Polaris loop支架具有独特的鱼尾状设计,与传统双J管相比,对患者术后留置支架期间的生活质量和勃起功能干扰较小。 展开更多
关键词 输尿管镜钬激光碎石术 双J管 POLARIS loop支架 生活质量 勃起功能
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Corrosion Behaviours of Copper Alloy in Solutions Containing Na_2SO_4 and NaCl with Different Concentrations 被引量:6
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作者 A.A.El-Meligi 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2002年第6期549-551,共3页
Potentiodynamic polarisation, potential-time measurements, X-ray diffraction (XRD) and infrared spectroscopy (IR) have been used to investigate the effect of different concentrations of Na2SO4 in the absence and prese... Potentiodynamic polarisation, potential-time measurements, X-ray diffraction (XRD) and infrared spectroscopy (IR) have been used to investigate the effect of different concentrations of Na2SO4 in the absence and presence of NaCI, on the corrosion of Cu-alloy. The electrochemical measurements showed that the increase of Na2SO4 concentration led to increase the corrosion current density of Cu alloy and vice versa. The presence of NaCI shifted the potential to more cathodic potential, which had a great influence on the protectiveness of the Cu oxide layer formed on the surface in presence of Na2SO4. The spectrometric measurements indicated the constituents of the film formed on the alloy surface were mainly Cu2O, in addition to the oxides, NiO and Fe2O3, which were traced by XRD analysis. 展开更多
关键词 Cu-alloy Polarisation X-ray diffraction NA2SO4 NACL Oxide film
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首次于青海省发现Pectobacterium polaris引起马铃薯黑胫病
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作者 刘思邈 孙清华 +3 位作者 张凤军 马永强 冯志文 张若芳 《中国马铃薯》 2022年第6期537-543,共7页
青海省位于青藏高原和黄土高原的交汇处,具有地理位置海拔较高、日照充足、气候冷凉、昼夜温差大优势,适宜马铃薯的生长。随着马铃薯生产规模的不断扩大,黑胫病的发生逐步蔓延。2021年秋季,在青海省马铃薯产区,发现了疑似马铃薯黑胫病... 青海省位于青藏高原和黄土高原的交汇处,具有地理位置海拔较高、日照充足、气候冷凉、昼夜温差大优势,适宜马铃薯的生长。随着马铃薯生产规模的不断扩大,黑胫病的发生逐步蔓延。2021年秋季,在青海省马铃薯产区,发现了疑似马铃薯黑胫病的植株。将样品清洗消毒后,对疑似病症部位病原菌进行分离与纯化,以获得单一菌落的纯净菌株,提取菌株DNA,采用细菌16S r RNA基因扩增的通用引物对待测菌株进行扩增,PCR产物经琼脂糖凝胶电泳检测,将质量良好的PCR产物进行Sanger测序,所获得序列与GenBank数据库中己知序列进行Blast比对,并通过MEGAX构建系统发育树,同时,在薯块和马铃薯植株中进行致病性检测。结果显示,分离出的3株菌株满足科赫法则,且序列比对结果与已报道的Pectobacterium polaris菌株同源性高,并基于16S rRNA以及多位点序列分析构建系统发育树,均与Pectobacterium polaris高度相似。因此,这3株分离物属于Pectobacterium polaris菌株,是中国青海省首次报道。 展开更多
关键词 Pectobacterium polaris 马铃薯黑胫病 病原菌 序列分析 系统发育树
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Linearly polarised three-colour lasing emission from an evanescent wave pumped and gain coupled fibre laser 被引量:3
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作者 普小云 江楠 +2 位作者 韩德昱 冯永利 任一涛 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第5期313-319,共7页
A novel Whispering-Gallery-Mode (WGM) fibre laser, emitting linearly polarised three-colour light, is demonstrated by pumping and gain coupling with evanescent waves. The pump light is longitudinally coupled into a ... A novel Whispering-Gallery-Mode (WGM) fibre laser, emitting linearly polarised three-colour light, is demonstrated by pumping and gain coupling with evanescent waves. The pump light is longitudinally coupled into a bare optical fibre immersed in a dye solution of lower refractive index. The dye molecules around the bare fibre are excited by the evanescent waves of pump light when they propagate along the fibre in a total internal reflection. When the pump beam within the fibre is a meridian beam, the WGM lasing emission from the fibre laser is a linearly polarised transverse electric wave, while it is a mixed wave of the linearly polarised transverse electric and magnetic waves if the pump beam is a skew beam within the fibre. Because the excited molecules are located within the evanescent field of WGM, a good spatial overlap between the dye gain and the evanescent field leads to a high pumping efficiency and a longer gain distance along the fibre. Once the bare fibre is inserted into three glass capillaries filled with Rhodamine 6G, 610 and 640 dye solutions, respectively, WGM laser oscillations at the wavelengths of 567-575, 605-614 and 656-666 nm occur simultaneously, and a linearly polarised three-colour lasing emission is achieved in a single optical fibre. 展开更多
关键词 fibre laser Whispering-Gallery-Mode evanescent wave polarisation
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Effect of added cobalt ion on copper electrowinning from sulfate bath using doped polyaniline and Pb-Ag anodes 被引量:3
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作者 黄惠 周继禹 郭忠诚 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第S1期55-59,共5页
Effect of added Co2 +(aq)on copper electrowinning was studied using doped polyaniline(Pani)and Pb-Ag(1%)anodes and a stainless steel cathode.The presence of added Co2+ (aq)in the electrolyte solution was found to decr... Effect of added Co2 +(aq)on copper electrowinning was studied using doped polyaniline(Pani)and Pb-Ag(1%)anodes and a stainless steel cathode.The presence of added Co2+ (aq)in the electrolyte solution was found to decrease the anode potentials.The optimum level of Co2 +(aq)concentration in the electrolyte,with respect to the maximum saving of power consumption was established.Linear sweep voltammetry(LSV)was used to study the influence of added Co2 +(aq)on the anodic processes in a copper sulfate-sulfuric acid electrolyte.The oxygen-evolution potential for Pani anode is depolarised at lower current densities(≤0.01 A/cm2)and attains saturation atρ(Co 2+ )o≈0.789 g/L;whilst the oxygen-evolution potential for Pb-Ag(1%)anode is depolarised at higher current densities(≤0.02 A/cm2)and attains saturation atρ(Co 2+ )o≈1.315 g/L.The preferred orientations of the copper deposits change from(220)to(111)with the addition of 0.394?0.789 g/L Co 2+ but higher concentrations favor(220)orientation again. 展开更多
关键词 copper electrowinning cobalt additive electrode potentials polarisation
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Electrodeposition of cobalt from aqueous sulphate solutions in the presence of tetra ethyl ammonium bromide 被引量:3
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作者 Pinak PATNAIK Subrat Kumar PADHY +2 位作者 Bankim Chandra TRIPATHY Indra Narayan BHATTACHARYA Raja Kishore PARAMGURU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第6期2047-2053,共7页
The effect of tetra ethyl ammonium bromide (TEAB) as an additive on the structural, morphological characteristics of the cobalt metal produced from aqueous sulphate solutions was investigated. The concentration of T... The effect of tetra ethyl ammonium bromide (TEAB) as an additive on the structural, morphological characteristics of the cobalt metal produced from aqueous sulphate solutions was investigated. The concentration of TEAB was varied in a range of 1-50 mg/L to evaluate its effect on current efficiency, energy consumption and quality of electrodeposited cobalt metal. Smooth and bright deposits of cobalt were obtained at low concentration of TEAB (10 mg/L) maintaining a current efficiency of 99.6%, with a low energy consumption of 2.38 kW'h/kg. X-ray diffraction studies reveal that (100) plane is the most preferred plane of crystal growth during cobalt electrodeposition. Scanning electron micrographs indicate that smooth and uniform deposit of cobalt is obtained at 10 mg/L beyond which the deposit quality deteriorates. Cyclic voltammetric studies indicate that the presence of TEAB in the electrolytic bath polarizes the cathode and decreases the cathodic current considerably. XPS results confirm the electrodeposition of high pure cobalt with no sign of chemical bonding with TEAB as evident from the FTIR spectra. 展开更多
关键词 COBALT tetra ethyl ammonium bromide (TEAB) ELECTRODEPOSITION polarisation study current efficiency deposit morphology
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Omnidirectional iridescence via cylindricallypolarized femtosecond laser processing 被引量:16
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作者 Nikolaos Livakas Evangelos Skoulas Emmanuel Stratakis 《Opto-Electronic Advances》 2020年第5期11-18,共8页
We report the femtosecond(fs)laser fabrication of biomimetic omnidirectional iridescent metallic surfaces exhibiting efficient diffraction for practically any angle of light incidence.Such diffractive behavior is real... We report the femtosecond(fs)laser fabrication of biomimetic omnidirectional iridescent metallic surfaces exhibiting efficient diffraction for practically any angle of light incidence.Such diffractive behavior is realized by means of multi-directional low-spatial-frequency,laser-induced periodic surface structures(LSFL)formed upon exploiting the cylindrical symmetry of a cylindrical vector(CV)fs field.We particularly demonstrate that the multi-directional gratings formed on stainless steel surface by a radially polarized fs beam,could mimic the omnidirectional structural coloration properties found in some natural species.Accordingly,the fabricated grating structures can spatially disperse the incident light into individual wavelength with high efficiency,exhibiting structural iridescence at all viewing angles.Analytical calculations using the grating equation reproduced the characteristic variation of the vivid colors observed as a function of incident angle.We envisage that our results will significantly contribute to the development of new photonic and light sensing devices. 展开更多
关键词 laser processing structural colors radial polarisation
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Wavelength dependence four-wave mixing spectroscopy in a micrometric atomic vapour 被引量:2
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作者 李院院 李莉 +1 位作者 张彦鹏 毕思文 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第9期297-302,共6页
This paper presents a theoretical study of wavelength dependence four-wave-mixing (FWM) spectroscopy in a micrometric thin atomic vapour. It compares three cases termed as mismatched case I, matched case and mismatc... This paper presents a theoretical study of wavelength dependence four-wave-mixing (FWM) spectroscopy in a micrometric thin atomic vapour. It compares three cases termed as mismatched case I, matched case and mismatched case II for the probe wavelength less, equal and greater than the pump wavelength respectively. It finds that Dicke- narrowing can overcome width broadening induced by Doppler effects and polarisation interference of thermal atoms, and high resolution FWM spectra can be achieved both in matched and mismatched wavelength for many cases. It also finds that the magnitude of the FWM signal can be dramatically modified to be suppressed or to be enhanced in comparison with that of matched wavelength in mismatched case I or II. The width narrowing and the magnitude suppression or enhancement can be demonstrated by considering enhanced contribution of slow atoms induced by atom-wall collision and transient effect of atom-light interaction in a micrometric thin vapour. 展开更多
关键词 four-wave mixing wavelength match Dicke-narrowing polarisation interference
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Blood classical monocytes phenotype is not altered in primary non-small cell lung cancer 被引量:2
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作者 Saleh A Almatroodi Christine F Mc Donald +2 位作者 Allison L Collins I an A Darby Dodie S Pouniotis 《World Journal of Clinical Oncology》 CAS 2014年第5期1078-1087,共10页
AIM: To evaluate the M1 and M2 monocyte phenotype in patients with non-small cell lung cancer(NSCLC) compared to controls. Also, to examine the expression of Th1 and Th2 cytokines in plasma of NSCLC vs controls. METHO... AIM: To evaluate the M1 and M2 monocyte phenotype in patients with non-small cell lung cancer(NSCLC) compared to controls. Also, to examine the expression of Th1 and Th2 cytokines in plasma of NSCLC vs controls. METHODS: Freshly prepared peripheral blood mononuclear cells samples were obtained from patients with NSCLC(lung adenocarcinoma and squamous cell lung carcinoma) and from non-cancer controls. Flow cytometry was performed to investigate M1 and M2 phenotypes in peripheral monocytes(classical monocytes CD14+, CD45+ and CD16-) using conventional surface markers. Th1 and Th2 cytokine production was alsoanalysed in the plasma using cytometric bead array technique. RESULTS: There were no significant difference in expression of M1(HLA-DR) and/or M2 markers(CD163 and CD36) markers on classical monocytes in patients with NSCLC compared to non-cancer controls. Expression of CD11 b, CD11 c, CD71 and CD44 was also shown to be similar in patients with NSCLC compared to noncancer controls. Th1 and Th2 cytokines [interleukin(IL)-1β, IL-2, IL-4, IL-5, IL-8, IL-10, IL-12(p70), tumor necrosis factor(TNF)-α, TNF-β, and interferon-γ] analysis revealed no significant difference between patients with NSCLC and non-cancer controls. CONCLUSION: This study shows no alteration in peripheral monocyte phenotype in circulating classical monocytes in patients with NSCLC compared to noncancer controls. No difference in Th1 and Th2 cytokine levels were noted in the plasma of these patients. 展开更多
关键词 Lung cancer MONOCYTE PHENOTYPE Polarisation TUMOUR progression TUMOUR regression
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Improvement of the axial trapping effect using azimuthally polarised trapping beam 被引量:2
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作者 李雪璁 孙秀冬 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第11期698-703,共6页
A dual optical tweezers system, which consists of a doughnut mode optical tweezer (DMOT) with the azimuthally polarised trapping beam and a solid mode optical tweezer (SMOT) with the Gauss trapping beam was constr... A dual optical tweezers system, which consists of a doughnut mode optical tweezer (DMOT) with the azimuthally polarised trapping beam and a solid mode optical tweezer (SMOT) with the Gauss trapping beam was constructed to compare the axial trapping effect of DMOT and SMOT. The long-distance axial trapping of ST68 microbubbles (MBs) achieved by DMOT was more stable than that of SMOT. Moreover the axial trapping force measured using the viscous drag method, was depended on the diameter of the particle, the laser power, and the numerical aperture (NA) of the objective lens. The measurement of the axial trapping force and the acquisition of CCD images of trapping effect confirmed that the DMOT showed excellent axial trapping ability than SMOT. A simple and effective method is developed to improve axial trapping effect using the azimuthally polarized beam as trapping beam. This is helpful for the long-distance manipulating of particles especially polarised biological objects in axial direction. 展开更多
关键词 optical tweezers azimuthally polarised beam axial trapping force ST68 microbubbles
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Effects of Anodizing Parameters in Tartaric-Sulphuric Acid on Coating Thickness and Corrosion Resistance of Al 2024 T3 Alloy 被引量:4
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作者 Mohammad Zaki Mubarok   +3 位作者 Wahab   Sutarno Soleh Wahyudi 《Journal of Minerals and Materials Characterization and Engineering》 2015年第3期154-163,共10页
2024 T3 is one of aluminium alloys which are widely used in the aircraft structures. Anodizing of alluminium alloy in tartaric-sulphuric acid (TSA) electrolyte is developed to obtain more environmentally-friendly proc... 2024 T3 is one of aluminium alloys which are widely used in the aircraft structures. Anodizing of alluminium alloy in tartaric-sulphuric acid (TSA) electrolyte is developed to obtain more environmentally-friendly process and to produce anodize layer with better corrosion resistance. In this research work, the influences of anodizing parameters of Al 2024 T3 in TSA on the thickness, weight and corrosion resistance of the anodize layer are studied. Corrosion resistance test was carried out by conducting salt spray test for 336 hours and anodic polarization measurements using potentiostat. Results of three-factor analysis of variance (ANOVA) demonstrated that the most influencing factor that determines the thickness and weight of the anodize layer is temperature, followed by applied voltage, duration of anodizing, voltage-temperature interaction, interaction of temperature-duration of anodizing, interaction of voltage-temperature-duration of anodizing, and interaction of voltage and duration of anodizing. The pit density and corrosion current density (icorr) were found to be dependent on the coating thickness. The anodize layer with a thickness of higher than 3 μm was not experienced to pitting corrosion during 336 hours of salt spray test. 展开更多
关键词 Aluminium ALLOY ANODIZING TSA Corrosion Polarisation PITTING
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Propagation properties of electromagnetic fields in elliptic dielectric hollow fibres and their applications 被引量:2
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作者 李会容 印建平 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第8期325-337,共13页
We numerically calculate and analyse the electromagnetic fields, optical intensity distributions, polarization states and orbital angular momentum of some elliptic hollow modes in an elliptic dielectric hollow fiber ... We numerically calculate and analyse the electromagnetic fields, optical intensity distributions, polarization states and orbital angular momentum of some elliptic hollow modes in an elliptic dielectric hollow fiber (EDHF) by using Mathieu functions, and also calculate the optical potential of the blue-detuned eHE11 mode evanescent-light wave for ^85Rb atoms, including the position-dependent van der Waals potential, and discuss briefly some potential applications of our EDHF in atom and molecule optics, etc. Our study shows that the vector electric field distributions of the odd modes in the cross section of the EDHF are the same as that of the even modes and with different boundary ellipses by rotating an angle of π/2, and the orbital angular momentum (OAM) of single HE (EH) mode is exactly equal to zero, while that of dual-mode in the EDHF is fractional in h, and has a sinusoidal oscillation as z varies. The EDHF can be used to produce various elliptic hollow beams, even to generate and study various atomic vortices with a fractional charge and its fractional quantum Hall effect in atomic Bose Einstein condensate, and so on. 展开更多
关键词 elliDtic hollow modes optical potential orbital angular momentum polarisation
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The Innate Immune Response in Lateolabrax japonicus Induced by Lipopolysaccharide from Glaciecola polaris Strain ARK149(LMG21854) 被引量:2
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作者 CHEN Ji-gang 《Agricultural Sciences in China》 CSCD 2010年第10期1504-1511,共8页
Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide (LPS), and the effect of the LPS inducing some innate immunity parameters was investigated in Japan... Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide (LPS), and the effect of the LPS inducing some innate immunity parameters was investigated in Japanese sea bass, Lateolabrax japonicus. The results showed that the LPS could enhance the phagocytosis activity, lysozyme activity, and bacteriolytic activity in L.japonicus, significantly (P〈0.05) at 1, 7, 14, 21, 28, and 35 d after LPS-injection. The indexes of three parameters increased to the peak of value at 28th d post LPS-injection. Moreover, RT-PCR analysis suggested that LPS significantly up-regulated the expression of both IL-8 and hepcidin in several tissues. These data suggest that the LPS extracted from Glaciecola polaris strain ARK149 can induce innate immunity in L. japonicus. 展开更多
关键词 Lateolabraxjaponicus Glaciecola polaris LIPOPOLYSACCHARIDE innate immunity RT-PCR
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两种输尿管支架对青中年女性行输尿管镜钬激光碎石术患者术后生活质量和性功能的影响 被引量:3
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作者 王荣 王悦 《中国性科学》 2020年第12期50-53,共4页
目的探讨青中年女性行输尿管镜钬激光碎石术患者术后留置不同的输尿管支架对生活质量和性功能的影响。方法选取2015年10月至2019年3月江苏大学附属金坛医院泌尿外科诊治的94例输尿管中下段结石并拟行输尿管镜钬激光碎石术的青中年女性... 目的探讨青中年女性行输尿管镜钬激光碎石术患者术后留置不同的输尿管支架对生活质量和性功能的影响。方法选取2015年10月至2019年3月江苏大学附属金坛医院泌尿外科诊治的94例输尿管中下段结石并拟行输尿管镜钬激光碎石术的青中年女性患者作为研究对象。根据随机留置的支架管分为双J管组和Polaris loop组,比较两组患者围手术期基线资料,记录不良事件及术后随访情况。结果两组患者术前基线资料比较,差异无统计学意义(P>0.05)。留置支架期间,Polaris loop组患者炎症指标、下尿路症状(LUTS)、排尿时腰疼情况、生活质量评分(QOL)、视觉模拟评分法(VAS)评分、女性性功能指数(FSFI)评分均优于双J管组,差异具有统计学意义(P<0.05)。结论输尿管镜钬激光碎石术后留置输尿管支架影响青中年女性患者的生活质量和性功能。Polaris loop支架具有独特的鱼尾状设计,与传统双J管相比,对女性患者术后的生活质量和性功能干扰较小。 展开更多
关键词 双J管 Polaris loop支架 生活质量 性功能
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A hybrid model for the charging process of the amorphous SiO_2 film in radio frequency microelectromechanical system capacitive switches 被引量:1
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作者 王立峰 黄庆安 +1 位作者 唐洁影 廖小平 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第3期426-432,共7页
Charging is one of the most important reliability issues in radio frequency microelectro- mechanical systems (RF MEMS) capacitive switches since it makes the actuation voltage unstable. This paper proposes a hybrid ... Charging is one of the most important reliability issues in radio frequency microelectro- mechanical systems (RF MEMS) capacitive switches since it makes the actuation voltage unstable. This paper proposes a hybrid model to describe the transient dielectric charging and discharging process in the defect-rich amorphous SiO2 RF MEMS capacitive switches and verifies experimentally. The hybrid model contains two parts according to two different charging mechanisms of the amorphous SiO2, which are the polarisation and charge injection. The models for polarisation and for charge injection are established, respectively. Analysis and experimental results show that polarisation is always effective, while the charge injection has a threshold electric field to the amorphous SiO2 film. Under different control voltage conditions, the hybrid model can accurately describe the experimental data. 展开更多
关键词 MODELING polarisation charge injection amorphous SiO2
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Inocula selection in microbial fuel cells based on anodic biofilm abundance of Geobacter sulfurreducens 被引量:1
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作者 Guotao Sun Diogo de Sacadura Rodrigues +3 位作者 Anders Thygesen Geoffrey Daniel Dinesh Fernando Anne S.Meyer 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第3期379-387,共9页
Microbial fuel cells (MFCs) rely on microbial conversion of organic substrates to electricity. The optimal perfor- mance depends on the establishment of a microbial community rich in electrogenic bacteria. Usually t... Microbial fuel cells (MFCs) rely on microbial conversion of organic substrates to electricity. The optimal perfor- mance depends on the establishment of a microbial community rich in electrogenic bacteria. Usually this micro- bial community is established from inoculation of the MFC anode chamber with naturally occurring mixed inocula. In this study, the electrochemical performance of MFCs and microbial community evolution were eval- uated for three inocula including domestic wastewater (DW), lake sediment (LS) and biogas sludge (BS) with varying substrate loading (Lsub) and external resistance (Rext) on the MFC. The electrogenic bacterium Geobacter sulfurreducens was identified in all inocula and its abundance during MFC operation was positively linked to the MFC performance. The IS inoculated MFCs showed highest abundance (18% ± 1%) of G. sulfurreducens, maximum current density [Imax = (690 ± 30) mA.m 2] and coulombic efficiency (CE = 29% ±1%) with acetate as the substrate./max and CE increased to (1780 ± 30) mA.m-2 and 58%± 1%, respectively, after decreasing the Rext from 1000 Ωto 200 Ω, which also correlated to a higher abundance ofG. sulfurreducens (21% ±0.7%) on the MFC anodic biofilm. The data obtained contribute to understanding the microbial community response to Lsub and Roy, for of timizing electricity eneration in MFCs. 展开更多
关键词 Lake sediment Coulombic efficiency Denaturing gradient gel electrophoresis Geobacter sulfurreducens Anode polarisation resistance
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Relationship between electromagnetically-induced transparency and Autler–Townes splitting in a Doppler-broadened system 被引量:1
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作者 裴丽娅 牛金艳 +4 位作者 王如泉 屈一至 左战春 吴令安 傅盘铭 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第7期244-251,共8页
We study the relationship between electromagnetically-induced transparency(EIT) and Autler–Townes(AT) splitting in a cascade three-level Doppler-broadened system. By comparing the absorption spectrum with the flu... We study the relationship between electromagnetically-induced transparency(EIT) and Autler–Townes(AT) splitting in a cascade three-level Doppler-broadened system. By comparing the absorption spectrum with the fluorescence excitation spectrum, it is found that for a Doppler-broadened system, EIT resonance cannot be explained as the result of quantum interference, unlike the case of a homogeneously broadened system. Instead, the macroscopic polarization interference plays an important role in determining the spectra of EIT and AT splitting, which can be explained within the same framework when being detected by the absorption spectra. 展开更多
关键词 electromagnetically-induced transparency polarisation interference Autler–Townes splitting
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