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对“显微摄影”和“缩微摄影”对应外文词的探讨
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作者 崔炳光 高建新 《中国科技术语》 2010年第5期57-58,共2页
指出科技书刊中,对术语"显微摄影"和"缩微摄影"的英文对应词有错译的现象,并对德语和俄语中"显微摄影"有误译成"缩微摄影"这一现象进行了讨论。
关键词 微摄 微摄 名词 翻译
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显微摄片在尿液形态学教学中的应用研究
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作者 张娟安 王长征 +1 位作者 吴晶晶 胡友明 《重庆医学》 CAS CSCD 北大核心 2011年第20期2033-2034,F0003,共3页
目的将显微摄片运用到员工尿液形态学教学与培训中,提高尿有形成份的检验质量。方法运用显微摄影系统对尿液中易漏检、易误判的尿有形成份进行动态摄片和对比摄片,并应用到员工教学与培训中。结果对颗粒红细胞与白细胞、结晶与红细胞等... 目的将显微摄片运用到员工尿液形态学教学与培训中,提高尿有形成份的检验质量。方法运用显微摄影系统对尿液中易漏检、易误判的尿有形成份进行动态摄片和对比摄片,并应用到员工教学与培训中。结果对颗粒红细胞与白细胞、结晶与红细胞等尿有形成份的显微摄片,直观、生动、形象,培训效果良好,形态学辨认的符合率明显提高(P<0.01)。结论易漏检、易误判的尿有形成份的显微摄片,在员工尿液形态学教学与培训中收到良好效果。 展开更多
关键词 尿有形成份形态 教学 微摄 颗粒红细胞
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基于双频连续波的微摄动目标探测算法
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作者 曹国聪 孔令讲 王杨 《雷达科学与技术》 2013年第4期385-389,共5页
针对穿墙雷达在灾难救援方面的应用,提出了基于双频连续波体制雷达对诸如废墟下由于呼吸引起轻微起伏波动的人体等微摄动目标进行探测的新方法。首先根据目标特点,将目标回波建立成正弦调频回波模型,并对其进行分析;然后提出FFT比相法... 针对穿墙雷达在灾难救援方面的应用,提出了基于双频连续波体制雷达对诸如废墟下由于呼吸引起轻微起伏波动的人体等微摄动目标进行探测的新方法。首先根据目标特点,将目标回波建立成正弦调频回波模型,并对其进行分析;然后提出FFT比相法测距算法,检测出废墟下人体目标到探测雷达的距离;接着通过将两个通道信号互相关,在低信噪比环境下检测出有生命目标(废墟下人体)的呼吸频率,实现对有生命体目标的探测。通过仿真实验,验证了该方法的可行性。并且该方法也可运用于对其他微摄动目标的探测。 展开更多
关键词 双频连续波 穿墙 微摄动目标 探测
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益肾摄微饮对Ⅲ、Ⅳ期糖尿病肾病炎症反应及氧化应激的影响 被引量:4
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作者 胡茜 汪荫华 王爱明 《实用临床医药杂志》 CAS 2013年第5期122-124,共3页
目的研究益肾摄微饮对Ⅲ、Ⅳ期糖尿病肾病炎症反应及氧化应激的影响,并探讨其相关的作用机制。方法将符合纳入标准的80例患者,随机分为对照组和治疗组。对照组给予基础治疗,治疗组加服益肾摄微饮,1剂/d,维持治疗8周。观察治疗前后尿蛋... 目的研究益肾摄微饮对Ⅲ、Ⅳ期糖尿病肾病炎症反应及氧化应激的影响,并探讨其相关的作用机制。方法将符合纳入标准的80例患者,随机分为对照组和治疗组。对照组给予基础治疗,治疗组加服益肾摄微饮,1剂/d,维持治疗8周。观察治疗前后尿蛋白、血肌酐、C反应蛋白(CRP)、血清超氧化物歧化酶(SOD)、丙二醛(MDA)的变化。结果治疗组的24 h尿蛋白定量(UP)、血清尿素氮(BUN)、血肌酐(SCr)指标显著降低(P<0.05);SOD水平显著升高,MDA和CRP水平显著降低(P<0.05)。结论益肾摄微饮治疗Ⅲ、Ⅳ期糖尿病肾病具有抑制炎症反应及抗氧化作用。 展开更多
关键词 益肾 糖尿病肾病 炎症反应 氧化应激 抑制炎症 抗氧化
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益肾摄微饮治疗Ⅲ期、Ⅳ期糖尿病肾病40例 被引量:3
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作者 胡茜 汪荫华 +2 位作者 缪卫华 王爱明 钱巧云 《河南中医》 2013年第11期1908-1910,共3页
目的:观察益肾摄微饮对Ⅲ期、Ⅳ期糖尿病肾病患者的治疗作用。方法:将80例患者随机分为治疗组及对照组各40例,对照组予西医常规治疗,治疗组在常规治疗基础上加服中药益肾摄微饮,2个疗程后比较疗效。治疗前后分别测定尿白蛋白,计算尿白... 目的:观察益肾摄微饮对Ⅲ期、Ⅳ期糖尿病肾病患者的治疗作用。方法:将80例患者随机分为治疗组及对照组各40例,对照组予西医常规治疗,治疗组在常规治疗基础上加服中药益肾摄微饮,2个疗程后比较疗效。治疗前后分别测定尿白蛋白,计算尿白蛋白排泄率(UAER)、测定血肌酐及尿肌酐,计算内生肌酐清除率(Ccr)、胱抑素C(CysC)、β2-微球蛋白(β2-MG)、总胆固醇(TC)、三酰甘油(TG)。结果:治疗组降低TC、TG、UAER、CysC、β2-MG、Ccr升高,与对照组比较差异有统计学意义(P<0.05)。结论:益肾摄微饮对Ⅲ期、Ⅳ期糖尿病肾病患者蛋白尿的减少及肾功能改善有效。 展开更多
关键词 益肾 糖尿病肾病 尿白蛋白 内生肌酐清除率 胱抑素 Β2球蛋白 总胆固醇 三酰甘油
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美丽的欣赏和艺术的启示--樊涌手机摄影作品縫境微埼观后有感
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作者 方志辰 方桄明 《德宏师范高等专科学校学报》 2021年第3期99-103,共5页
樊涌手机摄影《秘境微摄》汇集70余幅照片,记录了德宏山村乡野、田间地头、江河湖溪的生物景象和生命迹象。震撼在于记录、发现、传播、追求美丽。憧憬美景美图下美丽中国的美好愿景。
关键词 艺术 手机 秘境微摄
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微创新如何帮助企业走出“创新者困境”——基于腾讯微信的单案例研究 被引量:4
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作者 丁雪 杨忠 《科技管理研究》 CSSCI 北大核心 2020年第18期150-156,共7页
产生于互联网行业的微创新能够帮助企业跨越"创新者困境",然而现有对于微创新的研究大多从理论分析出发聚焦微创新的概念与特性,对于微创新是如何帮助企业走出"创新者困境"的问题缺乏探讨。从微创新视角,结合互联... 产生于互联网行业的微创新能够帮助企业跨越"创新者困境",然而现有对于微创新的研究大多从理论分析出发聚焦微创新的概念与特性,对于微创新是如何帮助企业走出"创新者困境"的问题缺乏探讨。从微创新视角,结合互联网典型企业的核心产品——腾讯微信的案例,以扎根理论为基础,通过运用案例研究方法对相关素材进行整理分析,得出微创新的两种类型,即前摄性微创新与回应性微创新,基于此探讨腾讯微信在不同阶段是如何对两类微创新进行组合以降低风险、提高收益。研究以期在理论上加强对微创新的认识,在实践上对企业走出创新困境提供一定的参考借鉴。 展开更多
关键词 创新 创新 回应性创新 创新组合
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Preliminary Study of Microzooplankton Grazing and Community Composition in the North of South China Sea in Autumn 被引量:3
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作者 苏强 黄良民 +5 位作者 谭烨辉 徐润林 李涛 许战洲 张建林 邱大俊 《Marine Science Bulletin》 CAS 2007年第2期43-53,共11页
Microzoopiankton community composition in the north of South China Sea was investigated during autumn (between September and October), 2004. Dilution technique using chlorophyll a (Chl a) was employed to estimate ... Microzoopiankton community composition in the north of South China Sea was investigated during autumn (between September and October), 2004. Dilution technique using chlorophyll a (Chl a) was employed to estimate grazing rates and grazing pressure. The results showed that Polymenophorea Oligotrichida was the dominant group with 16 species, and there were 4 species in Oligotrichina and 11 species in Tintinnina. The ciliates abundance ranged from 9 to 102 ind/m^3, instantaneous growth rates of phytoplankton (k) varied from 0.03 / d to 2.13 / d. Grazing rates of microzooplankton(g) ranged between 0.01 / d and 1.06 / d. The grazing pressure on initial phytoplankton stock (Pi) and primary production (Pp) was 0.089 % - 65.23 % and 33.63 % - 86.04 %, respectively. The grazing of microzooplankton was mainly limited by ciliates abundance. Results of grazing pressure on primary production indicated that microzooplankton played an improtant role in transmitting primary production in the north of South China Sea. 展开更多
关键词 Microzoopiankton Grazing pressure Dilution technique South China Sea
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Night Vision Characteristics and Application of MTV 2821CB CCD Camera
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作者 林家明 魏建中 +2 位作者 陈静 郝群 张祥 《Journal of Beijing Institute of Technology》 EI CAS 1999年第4期403-409,共7页
Aim To describe accumulating frames characteristics of CCD camera as a night vision detector. Methods Utilizing CCD external trigger, computer video capture card and image processing software, the image accumul... Aim To describe accumulating frames characteristics of CCD camera as a night vision detector. Methods Utilizing CCD external trigger, computer video capture card and image processing software, the image accumulation was made. Results The detection of the static object image whose illuminance on the CCD FPA(focal plane array) was less than 3 7×10 -5 lx was realized and the image's resolution of 300?TV lines was achieved. Conclusion This experimental system can provide a kind of night vision device capable of detecting the static object at low light level and with low cost compared to an image intensifier. 展开更多
关键词 night vision CCD camera accumulating frames S/N illuminance of CCD FPA
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数码相机特异功能之文字录入
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《家庭电脑世界》 2004年第1期64-66,共3页
人们都说2003年是数码相机的购买年,随着数码相机价格的下降,越来越多的人选择了购买数码相机。不经意间,你会发现身旁的人们都已经举起数码相机进行拍摄了。数码相机的技术在不断地发展,拍摄像素在不断地增加,功能在不断地完善,... 人们都说2003年是数码相机的购买年,随着数码相机价格的下降,越来越多的人选择了购买数码相机。不经意间,你会发现身旁的人们都已经举起数码相机进行拍摄了。数码相机的技术在不断地发展,拍摄像素在不断地增加,功能在不断地完善,可是人们使用数码相机的意识却没有跟上。 展开更多
关键词 数码相机 文字录入 OCR 微摄 分辨率 翻拍技巧
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The Robin Problem for Singular Perturbed Integral Differential Equations of Volterra Type 被引量:12
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作者 张祥 《Chinese Quarterly Journal of Mathematics》 CSCD 1992年第3期24-31,共8页
In this paper,making use of upper and lower solutions,we first prove the existence of the solu tion for integral differential equation of Volterra type.Then applying the theory of differential in equalities obtained,u... In this paper,making use of upper and lower solutions,we first prove the existence of the solu tion for integral differential equation of Volterra type.Then applying the theory of differential in equalities obtained,under the appropriate assumptions,by constructing the special function of upper and lower solutions,we demonstrate the existence of the solution for singularly preturbed integral differential equation of Volterra type,and give the uniformly valid approximate estimation. 展开更多
关键词 singular perturbation differential inequalities the existence of solution approxi mate estimation
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CHARACTERISTICS OF LIP-MOUTH REGION IN SMILING POSITION FROM 80 PERSONS WITH ACCEPTABLE FACES AND INDIVIDUAL NORMAL OCCLUSIONS
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作者 张江恒 陈扬熙 周秀坤 《Chinese Medical Sciences Journal》 CAS CSCD 2002年第3期189-192,共4页
OBJECTIVE: The characteristics of lip-mouth region including the soft and hard tissues in smiling position with frontal fixed position photographic computer-aided analysis were studied. METHODS: The subjects were 80 p... OBJECTIVE: The characteristics of lip-mouth region including the soft and hard tissues in smiling position with frontal fixed position photographic computer-aided analysis were studied. METHODS: The subjects were 80 persons (40 male and 40 females, age range: 17 to approximately 25 years) with acceptable faces and individual normal occlusions. The subjects were asked to take maximum smiling position to accept photographic measurement with computer-aided analysis. RESULTS: The maximum smile line could be divided into 3 categories: low smile line (16.25%), average smile line (68.75%), and high smile line (15%). CONCLUSION: The method adopting maximum smiling position to study the lip-month region is reproducible and comparable. This study would be helpful to provide a quantitative reference for clinical investigation, diagnosis, treatment and efficacy appraisal. 展开更多
关键词 PERSON LIP smilingObjective. The characteristics of lip mouth region including the soft and hard tissues in smiling position with frontal fixed position photographic computer aided analysis were studied. Methods. The subjects were 80 person
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Analytical Approach to Fractional Zakharov-Kuznetsov Equations by He's Homotopy Perturbation Method
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作者 Ahmet Yildirim Yagmur Gülkanat 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第6期1005-1010,共6页
The aim of this paper is to obtain the approximate analytical solution of a fractional Zakharov-Kuznetsov equation by using homotopy perturbation method (HPM). The fractional derivatives are described in the Caputo se... The aim of this paper is to obtain the approximate analytical solution of a fractional Zakharov-Kuznetsov equation by using homotopy perturbation method (HPM). The fractional derivatives are described in the Caputo sense. Several examples are given and the results are compared to exact solutions. The results reveal that the method is very effective and simple. 展开更多
关键词 homotopy perturbation method fractional Zakharov-Kuznetsov equations fractional calculus Caputo sense
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Nonlinear predator-prey singularly perturbed Robin Problems for reaction diffusion systems 被引量:4
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作者 莫嘉琪 韩祥临 《Journal of Zhejiang University Science》 CSCD 2003年第5期511-513,共3页
The nonlinear predator-prey reaction diffusion systems for singularly perturbed Robin Problems are considered. Under suitable conditions, the theory of differential inequalities can be used to study the asymptotic beh... The nonlinear predator-prey reaction diffusion systems for singularly perturbed Robin Problems are considered. Under suitable conditions, the theory of differential inequalities can be used to study the asymptotic behavior of the solution for initial boundary value problems. 展开更多
关键词 NONLINEAR PREDATOR-PREY Reaction diffusion Singular perturbation
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A Class of Singularly Perturbed Problems for Nonlinear Elliptic Equations
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作者 ZHANG Han-lin 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2005年第4期385-389,共5页
A class of singularly perturbed problems for the nonlinear elliptic equations is considered. Under suitable conditions, using the theory of differential inequalities the asymptotic behavior of solution for the boundar... A class of singularly perturbed problems for the nonlinear elliptic equations is considered. Under suitable conditions, using the theory of differential inequalities the asymptotic behavior of solution for the boundary value problems are studied, which reduced equations possess two intersecting solutions. 展开更多
关键词 NONLINEAR elliptic equation singular perturbation
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Analysis of the One Dimensional Steady State Semiconductor Multijunction Device Model with the Avalanche Effect *
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作者 边永新 王元明 《Journal of Southeast University(English Edition)》 EI CAS 1998年第1期127-133,共7页
In this paper we consider the stationary multijunction device model with the avalanche effect. Using the singular perturbation method, an approximation to the current voltage curve is obtained. The cause and the condi... In this paper we consider the stationary multijunction device model with the avalanche effect. Using the singular perturbation method, an approximation to the current voltage curve is obtained. The cause and the condition for the occurrence of saturation current is analyzed. Especially, it is pointed that the avalanche effect is responsible for the blowing up of the saturation current. We prove the existence of multiple steady state solution when the ionization rate is relatively small. Finally, some numerical examples are presented to show the reliability of the theoretical results. 展开更多
关键词 singular perturbations SEMICONDUCTOR nonlinear differential equation SIMULATION
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Nutritional Status and Associated Factors among Pregnant Women in Wondo Genet District, Southern Ethiopia
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作者 Desalegn Kuche Pragya Singh +1 位作者 Debebe Moges Tefera Belachew 《Journal of Food Science and Engineering》 2015年第2期85-94,共10页
Inadequate quality and quantity diet is one of the major reasons for high levels of malnutrition in pregnant women. A cross-sectional survey was conducted in Wondo Genet District, Southern Ethiopia. A two-stage cluste... Inadequate quality and quantity diet is one of the major reasons for high levels of malnutrition in pregnant women. A cross-sectional survey was conducted in Wondo Genet District, Southern Ethiopia. A two-stage cluster sampling technique was used to select a representative sample of 153 pregnant women aged 19-49 years from three rural villages ("Kebeles"). Energy and nutrient intakes from foods were calculated from one-day weighed food records on a sub-sample (n = 77). The result of the study showed that the intakes of most nutrients were lower than the recommended intake. The energy intake of the study participants both in 2nd and 3rd trimesters of pregnancy were 2,308 kcal and 1,420.5 kcal compared to the recommended 2,340 kcal and 2,452 kcal, respectively. Except iron, almost all micronutrient intakes were lower than the recommended intake. Vitamin A intake was 3/ag compared with the recommended 800μg, while protein intake of the study respondents in 2nd and 3rd trimester of pregnancy was 45.9 g and 31.5 g, respectively, compared with the recommended 71 g. Risk factors for undernutrition were multiple pregnancy and no consumption of cereal-based foods. This study revealed that the energy and nutrient intake of the pregnant women in study area was below the recommended intakes. Furthermore, the situation might be aggravated by high phytate content food consumption reported. Nutritional status of pregnant women in study area was not adequate to support the increased energy and nutrient requirement of the participants. 展开更多
关键词 Pregnant women nutritional status VITAMINS energy PROTEIN Southern Ethiopia.
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Uniform Convergence Analysis of Finite Difference Scheme for Singularly Perturbed Delay Differential Equation on an Adaptively Generated Grid 被引量:2
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作者 Jugal Mohapatra Srinivasan Natesan 《Numerical Mathematics(Theory,Methods and Applications)》 SCIE 2010年第1期1-22,共22页
Adaptive grid methods are established as valuable computational technique in approximating effectively the solutions of problems with boundary or interior layers. In this paper,we present the analysis of an upwind sch... Adaptive grid methods are established as valuable computational technique in approximating effectively the solutions of problems with boundary or interior layers. In this paper,we present the analysis of an upwind scheme for singularly perturbed differential-difference equation on a grid which is formed by equidistributing arc-length monitor function.It is shown that the discrete solution obtained converges uniformly with respect to the perturbation parameter.Numerical experiments illustrate in practice the result of convergence proved theoretically. 展开更多
关键词 Singular perturbation problems delay differential equations boundary layer upwind scheme adaptive mesh uniform convergence.
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Image Distortion of Optical Coherence Tomography
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作者 安源 姚建铨 《Transactions of Tianjin University》 EI CAS 2004年第1期81-84,共4页
A kind of image distortion in Optical Coherence Tomography (OCT) resulted from average refractive index changes between structures of bio tissue is discussed for the first time.Analysis is given on following situation... A kind of image distortion in Optical Coherence Tomography (OCT) resulted from average refractive index changes between structures of bio tissue is discussed for the first time.Analysis is given on following situations:1) Exact refraction index changes between microstructures;2)The gradient of average refractive index change between different tissue layers is parallel to the probe beam;3) The gradient of average refractive index change is vertical to the probe beam.The results show that the image distortion of situation 1) is usually negligible;in situation 2) there is a spread or shrink effect without relative location error; however,in situation 3) there is a significant image error inducing relative location displacement between different structures.Preliminary design to eliminate the distortion is presented,the method of which mainly based on the image classification and pixel array re arrangement. 展开更多
关键词 Optical Coherence Tomography(OCT) image distortion refractive index bio tissue
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The Nonlinear Predator-Prey Singularly Perturbed Robin Initial Boundary Value Problems for Reaction Diffusion System
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作者 莫嘉琪 《Journal of Shanghai Jiaotong university(Science)》 EI 2003年第2期179-182,共4页
The nonlinear predator-prey singularly perturbed Robin initial boundary value problems for reaction diffusion systems were considered. Under suitable conditions, using theory of differential inequalities the existence... The nonlinear predator-prey singularly perturbed Robin initial boundary value problems for reaction diffusion systems were considered. Under suitable conditions, using theory of differential inequalities the existence and asymptotic behavior of solution for initial boundary value problems were studied. 展开更多
关键词 NONLINEAR PREDATOR-PREY reaction diffusion singular perturbation Robin problem
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