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单词 Doppler
例句
1. The Doppler allows identification of submucosal arteries inducing haemorrhage.
2. Based on these findings the Doppler controlled injection treatment of Dieulafoy's disease could be considered an alternative to surgery.
3. The principle of using a Doppler shift to indicate flow velocity can be applied with sound waves instead of light waves.
4. No rebleeding occurred and Doppler control detected no further arterial signals from the ulceration.
5. The Doppler Effect is used in police radar speed-traps for motorists.
6. The Doppler Effect is very apparent in my imagining of that afternoon.
7. Built into the saddle was a small Doppler radar set.
8. When this Doppler shift is converted to relative velocity it turns out that the velocity varies sinusoidally with time.
8. try its best to gather and build good sentences.
9. The three colour laser Doppler Anemometer measures in three dimensions how fast a fluid is travelling past a given point.
10. This Doppler effect is frequently heard on the ground when a fast-moving ambulance or police car passes the listener.
11. Compared to biphase signals, they have large Doppler tolerance.
12. The cosmological redshift is not a normal Doppler shift.
13. Objective transcranial color Doppler ultrasound of brachiocephalic artery Takayasu arteritis in patients with intracranial artery and ophthalmic artery ...
14. Objective To investigate the clinical value of transcranial Doppler ( TCD ) in cerebral lacuna infarct.
15. High frequency Color Doppler ultrasound in the diagnosis of sebaceous cyst has an important value.
16. Objective To explore the clinical value of color Doppler sonographic in diagnosis of hereditary hemorrhagic telangiectasia(HHT)with hepatic involvement.
17. Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).
18. Methods: Using laser Doppler flowmetry to measure thechange of cochlear blood flow on superior cervical ganglion.
19. Electroencephalogram(EEG) and transcranial Doppler(TCD) recordings were carried out in 25 children with migraine during ictal and interictal period.
20. This paper describes a new method, Doppler heterodyne measurement method of surface profile, using a simultaneous phase comparator.
21. Spectroscopic measurements in 1960 indicated that small-scale motion of the plasma was producing the doppler broadening of the spectral lines.
22. There is another physical law that teases me, too: the Doppler Effect.
23. Because those organs are moving, the frequency of the reflected radiation is Doppler shifted by a tiny amount.
24. This relationship between frequency and speed, which is called the Doppler effect, is an everyday experience.
25. An important question in the interpretation of the laser Doppler readings is the depth of the measurement region.
26. First, because the source and observer are moving away from each other the doppler effect causes an increase in wavelength.
27. Materials and methods The hemodynamics of the uterine arteries and myometrium were assessed by color Doppler flow imaging for 14 patients with invasive hyadatidiform mole.
28. Objective:To conduct such a study on TSS downstream of mitral stenosis using a finite element model of two dimensions combined with Doppler echocardiography in human beings.
29. To meet the seism detections require of high accuracy, high resolving power, the measurement technique of Laser Doppler and detection technique of faint signal are further researched.
30. When there exists general array error in uniform linear array ( ULA ), an estimation of the direction of arrival (DOA) and Doppler frequency for signals was proposed.
31. The neutron streak image tube also can be used to determine the temperature of the plasma of the implosion of DT-filled targets by measuring the Doppler broadening.
32. Objective To evaluate the value of color Doppler ultrasound in dilated superior ophthalmic vein and its etiologies.
33. A Doppler radar was used to assess the performance of DWL.
34. Objective To assess the associations between Doppler ultrasound derived luteal blood flow indices and luteal hormonal profile in midluteal phase in spontaneous and stimulated cycles.
35. Conclusion Iodic contrast agent (Optiray) significantly improves the color Doppler flow imaging of the tumor vascularity.
36. Methods The manifestations or characteristics on color Doppler ultrasonography were analysed in 17 cases with breast phyllode tumor and 92 cases with breast fibroadenoma.
37. Could GPS ever be used to measure effects besides the gravitational redshift and Doppler effect?
38. Conclusion: Color Doppler ultrasound examination might a useful noninvasive method for IMA - coronary artery bypass graft surgery.
38. try its best to collect and create good sentences.
39. This paper discusses the principle and form of Heterodyne - CW Doppler fuze and Toothed - FM fuze firstly.
40. To assess the value of transvaginal color doppler ultrasonography ( TVCDUS ) in the diagnosis of ovarian pregnancy(OP).
41. In order to detect the low-speed weak target in the stationary sea clutter, the clutter-whitening processing module is proposed to replace the conventional MTI filter and Doppler filter bank.
42. The tangential velocity distribution in the annular region of a turbo air classifier was investigated by laser doppler velocimeter(LDV).
43. Conclusion To evaluate AEF with Doppler echocardiograph is noninvasive and easy and accurately.
44. Objective:To investigate the diagnostic value of color Doppler flow imaging(CDFI) in left iliac femoral venous thrombosis caused by congenital iliac vein compression syndrome.
45. The Rang - Doppler imaging forms imagery through one dimension Fourier - transformed twice in Cartesian coordinate.
46. Besides these,() both clinicians and doctors performing Color Doppler ultrasonography should pay attention to the calf intermuscular DVT.
47. The patient was diagnosed aortic stenosis by color Doppler ultrasound.
48. Synthetic Aperture Radar (SAR) gains a high-resolution radar image by compressing the Doppler echo in azimuth direction and the linear frequency modulation (LFM) signal in range direction.
49. Objective To study the cilinical use of colored Doppler ultrasound in the diagnosis of cryptorchidism.
50. The instrument can demonstrate ultrasonic Doppler effect, analyze the frequency deviation and measure the velocity.
51. Along with the progressive development of tissue Doppler imaging, it is expected to become the most important criterion to the selection of patients for cardiac resynchronization theraphy.
52. The velocity transient signals of particles in riser a laser Doppler velometer.
53. Doppler laser velocimeter is employed to measure the velocity field around hanged grid deflector plate.
54. Methods To judge the severity of the penile injury by arterial doppler examination and examination of the tactile sense and two point discrimination on the foreskin.
55. Simulation result shows that the system a good performance in multi - path fading and Doppler shift channel.
56. Two - photon resonant NFWM is a Doppler - free spectroscopy by using the narrow bandwidth of incident laser beams.
57. Active radar seeker mostly adopts pulse Doppler monopulse radar system. So it is significant to research on the modeling and simulation of this kind of radar seeker.
58. In use 14 days, 28 days, using laser Doppler blood flow measurement instrument detection of ischemic hind limb perfusion.
59. A transducer for lateral remote displacement measurement based on grating laser Doppler effect is introduced.
60. Methods Color Doppler was applied to check liver, cholecyst, pancreas, spleen and two kidney to discover focus size, position, interior echoes and to measure the blood parameters.
61. The structure and the experimental results of a remote controlled pulsed laser Doppler velocimeter is described.
62. The Doppler frequency can be obtained as a heterodyne or beat effect.
63. Doppler centric frequency is influenced much greater than Doppler FM rate and azimuth resolution is.
64. A new statistical model for non - frequency mobilechannel is presented in this paper from the Doppler - Power - Spectral - Density.
65. In medical Doppler ultrasound systems, a high-pass filter is usually employed to remove wall clutter components which may also remove the information of the low velocity blood flow.
66. Conclusion Transcranial color Doppler has important usefulness in the diagnosis of diabetic cerebrovascular disease.
67. This paper introduces the basic principle, characteristics, limitations, structure, common classified light line and N/S of Doppler simulate signal of laser Doppler velometer.
68. The radar altimeter mounted on high speed vehicle demonstrateswideband doppler modulation characteristic.
69. Objective: To investigate indices of the diagnosis of the infection of accessory sex gland in infertile males by the transrectal color Doppler ultrasound.
70. Filling fraction method by Doppler echocardiography can be used toe-valuate LV diastolic function in cases with diabetes mellitus and to screen diabetes cardiomyopathy.
71. Conclusions The color doppler sonography had great diagnostic value in neck tumors.
72. But you will not be able to measure the Doppler shift of the black hole-- no pulsations.
73. Objective To investigate the value of high prefrequency color doppler ultrasonography in diagnosis of congenital hypertrophic pyloric stenosis.
74. Objective To investigate the value of color Doppler echocardiography in diagnosing infracardiac total anomalous pulmonary venous drainage (ITAPVD).
75. The primary experiments on the retrieval of the wind vector fields from the Doppler radial velocity to modify the initial forecast fields are carried out,[http:///doppler.html] and some conclusions are obtained.
76. Objective: To determine the application of Color Doppler ultrasound in portal vein thrombopoiesis (PVT) after splenectomy .
77. The influence of the antenna sidelobe on the ground clutter received by airborne pulsed doppler radar is analyzed by computer simulation and experimental data.
78. Objective : To study the value of diagnosis of coarctation of the aorta color Doppler echocardiography.
79. The readings of stethoscope doppler reflect blood flow within artery of transplant precisely.
80. ConclusionColor Doppler sonography is the first choice in the diagnosis and differential diagnosis of pulmonary embolism.
81. Sometimes it can take a years to sort out these Doppler observations.
82. Objective To evaluate the feasibility and efficacy of implantation of inferior vena cava (IVC)filter under the guidance of color Doppler ultrasound and embolectomy for acute deep vein thrombosis.
83. The Doppler ultrasound signal is a non - stationary time sequence. Its power spectrum density is time - varying.
84. The proposed method may estimate Doppler rate robustly in the case of low SNR.
85. Objective To investigate the various color Doppler imaging of epidermoid cystsand its correlation with histopathologic changes.
86. The bottom boundary layer under cnoidal waves was studied by using Acoustic Doppler Velocimeter(ADV) technique in a laboratory flume.
87. The Doppler spectral broadening due to nonstationary movement of target and radio-frequency clutter will decrease the veracity of target detection by high frequency ground wave(HFGW)radar.
88. Through detecting the Doppler shifts of airglow (aurora) in upper atmosphere, the physical quantity such as velocity, temperature and pressure of upper atmosphere is derived.
89. The satellite carrying master oscillator (SCMO) is non-coherent with the frequency standard at the ground tracking station in the non-coherent Doppler system.
90. Conclusion Color Doppler echocardiography can help to diagnose the LVRAC.
91. The result of calculation shows that the Doppler sideband near-resonance method is preferable.
92. Objective To study the feature and value of Color doppler flow imaging ( CDFI ) in childrens intussusception.
93. Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.
94. This paper presents a simple tracking filter circuit, which is applicable to Doppler radar sets and consists mainly of a switched bandpass filter and a phase-locked loop.
95. Results Gray scale and Doppler signal of abdominal aorta were significantly enhanced by contrast agent.
96. Methods: Cranial computer tomography ( CT ) and transcranial Doppler ( TCD ) were performed in 38 patients.
97. Several important parts are analysed and discussed, which include echo signal, azimuth processing, range processing multi-looks processing and Doppler parameters estimation for spaceborne SAR.
98. An experimental investigation of the shrouded centrifugal backswept impeller flow field has been conducted at off-design flow using Laser Doppler Velocimeter (LDV) and shaft encoder.
98. is a online sentence dictionary, on which you can find nice sentences for a large number of words.
99. Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.
100. The wireless propagation environment is described first: analyzing the small-scaled fading, including amplitude fading, multi-path time delay and Doppler spectrum spread.
101. In frequency modulation continuous wave ( FMCW ) radar, the target information is usually extracted by Range - Doppler processing.
102. The separating flow in a turbulent boundary layer was surveyed in a 2-D curved-wall diffuser by employing 2-D laser Doppler velometer.
103. If you have a binary system whereby both stars are visible so you get the spectrum of both stars, then you see the Doppler shift of both stars in the spectrum.
104. The turbulence properties of annular space a cyclone were investigated by using the Laser Doppler Velocimetry.
105. The light scattering characteristics of particles in phase Doppler sizing anemometry is calculated with a theoretical model based on geometrical optics approach.
106. Methods:Color doppler echocardiography were carried out on 68 emergency cases with dyspnoea, chest pain, cardiac failure or stab wound.
107. Objective To evaluate the ability of data-based analysis by color Doppler in diagnosing acute rejection of kidney transplantation.
108. The flow field in the swirl chamber of a motored diesel engine was measured by Laser Doppler Anemometry (LDA).
109. The Doppler parameters of CFV: the retrograde a wave - velocity peak ( Va ) and duration time ( Ta ) were obtained.
110. Conclusion To be simple and accuracy, Color Doppler Sonography offer more important information in the diagnosis of senior degenerative valvulopathy.
111. Results show that the variation method is a efficient way to retrieve 3-D wind field data from Doppler radar data.
112. Conclusions: Color Doppler ultrasonography is of clinical significance in the examination of ophthalmic artery in the patients with visual diminution.
113. Objective : To analyse the applied value of Color Doppler ultrasound on cryptorchidism.
114. Conclusion This study offers a theoretic basis to the early prediction of fetal hyperdynamic circulation with Doppler ultrasound.
115. Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted.
116. Results: 81 cases of patients with adenomyosis or adenomyoma were diagnosed by color doppler ultrasound.
117. Images 3, 4: Color Doppler images showing the sequestrated part of the lungs with its own arterial supply arising directly from the descending aorta .
118. Conclusions Both color Doppler ultrasound and nuclein scanning were effective and painless in the diagnosis of the thyroid nodule and each has its own superiority.
119. Imagine now you can make the Doppler shift measurements of both stars.
120. One Doppler radar can only measure speed of rain and cloud, but we need three-dimensional wind-vector fields from the echo of wind in application.
121. The defect properties in chemical vapor deposition diamond films doped by sulfur and boron were investigated by the Doppler broadening measurements and electron paramagnetic resonance (EPR).
122. Objective : To investigate the diagnosing and clinic value of Doppler sonography for puncturing pericardial effusion.
123. Objective To compare the results of CT, MRI, electroencephalogram (EEG) and transcranial Doppler (TCD) in examination of posttraumatic epilepsy.
124. A novel coherent Doppler lidar (CDL) system based on single-mode fiber (SMF) components and instruments is presented to measure the speed of target.
125. Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.
126. The pulsed Doppler radar is widely adopted in modern advanced fighting aircrafts as the fire controlling radar, of which some theoretical problems are still waiting for further researching.
127. Objective To assess collateral compensative capacity by transcranial Doppler(TCD) in patients with internal carotid artery occlusion .
128. The color Doppler velocity profile ( CDVP ) technique was used to investigate the portal hemodynamics of 35 healthy people.
129. Millimeter wave target seeker has features such as high-accuracy, powerful anti-interference capability,[] high Doppler resolution and large plasma penetrated ability.
130. Simulation results show that the design is efficient with the soft-failure of gyro, accelerator, GPS receiver and Doppler radar.
131. This paper introduces the composition, specification and the structure design features of the antenna pedestal system for X-band truckborne doppler weather radars.
132. METHODS:The changes of pial microvascular diameter of gerbils were measured by Laser Doppler and the changes of NO were measured by electrochemistry.
133. All of the patients were accepted ascending phlebography and color Doppler ultrasonography of deep for superficial and perforating veins.
134. Objecctive To study the diagnostic value of ultrasonic image and color Doppler ultrasonic examination used in ec- topic debouch of ureteral orifice.
135. Conclusion: The results suggested perfluorocarbon contrast agent could give rise color Doppler signals in lower limb arteries, and help to show the color Doppler flow of deep vessels in lower limb.
136. Radial velocity, also known as the Doppler wobble technique, involves searching for wobbles in a star's light that indicate the gravitational pull of an orbiting planet.
137. The Doppler supersound can determine precisely the valve damage caused by IE, and reflect the physiopathological changes objectively.
138. VHF Doppler Radar Observations of Buoyancy Waves Associated with Thunderstorms, 1984 J . Atm . Sci.
139. Laser phase Doppler anemometry (PDA)technology can be used to measure moving particle's velocity, size and relative refractive index simultaneously.
140. This paper describes the operation principles, characteristics and applications of a two-dimensional laser Doppler velocimeter.
141. So studying on a kind of waveforms adapting to airborne pulse Doppler radar altimeter and corresponding signal processing algorithms is major task in this dissertation.
142. And the influence of the Doppler frequency shift on UAV - UWB communication link is analyzed and simulated.
143. Objective To investigate the diagnostic value of color Doppler flow imaging ( CDFI ) in acute orchitis and epididymitis.
144. Doppler shift is unavoidable in underwater acoustic communications because of relative moving between the transmitter and the receiver.
145. Figure 4. Color Doppler sonogram showing a normal flow direction and waveform pattern in the OA.
146. In this paper , the application of coherent phase - coded pulse train ( CPCPT ) solves range - Doppler coupling well.
147. Minnesota Public Radio reported that the plume from the Pagami Creek Fire was picked up by doppler radar.
148. B , Power Doppler image showing circumferential blood flow around the tumor.
149. Methods All nurseling under 3 years were examined with color Doppler high frequency ultrasound.
150. Conclusion Color Doppler sonography combined with blood flow quantitative technique provide a helpful, sensitive and convenient tool to detecte the renal changes in SLE patients.
151. Then, we proposed a maximum Doppler spread (MDS) estimation algorithm for OFDM systems with the comb-type pilot pattern in doubly selective fading channels (DSFC).
152. The main obstacles for the passive tracking system are the Doppler and multipath effect. The Doppler compensation is necessary for the high speed target tracking.
153. DV Doppler waveform of this dextrocardia fetus showed a nearly ab- sent atrial systole wave.
154. A Doppler compensation method for bi-phase-coded signal based on Moving Target Detection (MTD) is presented to resolve the Doppler sensitive trait.
155. Purpose:To study deep venous valvular incompetence of lower extremity by using high-frequency ultrasonography and color doppler.
156. Based on the definition of the average ambiguity function, the numerical expression of the average ambiguity function for the RPPM pulse doppler radar signal is derived in this dissertation.
157. Objective Discussion tyroma (armor lump) colored Doppler supersonic (CDFI) acoustic image characteristic.
158. Objective : To assess the usage of color doppler monitoring method in the centesis of kidney cysts.Sentence dictionary
159. Results Neck tumors such as carotid body tumor, neurilemmoma, swelling lymph, nodehemangioma and lipoma had various color doppler sonography image characteristics.
160. AIM: To explore the value of Doppler tissue imaging in assessing the left ventricular diastolic function of normotensive offspring of hypertensive parents.
161. The Doppler redshift and the cosmological redshift are governed by two distinct formulas.
162. Adopting direct array manifold in a uniform circular array (UCA), the estimation of Doppler frequency can be obtained by DOA matrix.
163. The inaccurate Doppler centroid estimation can evidently degrade the quality of SAS image.
164. The pulsation in the original data of Doppler velocity has to be removed before the retrieval.
165. Pulsed Doppler spectra showed image of smooth continuous bands in the honeycomb or snaky black areas.
166. The model of multi-ship ISAR imaging driven by ocean wave is given, and the Doppler distributing is analyzed,() then the complexity of projection plane and cross range resolution is illuminated.
167. With arbitrary postures of the aircraft and the antenna, the coherent clutter model for airborne Doppler radar is studied in this paper.
168. The internal carotid artery is the most proper cerebral artery for clinical assessment of cerebral autoregulation by Doppler sonography.
169. Materials and Methods: Color doppler characteristics in 10 patients with carotid body tumor were analysed retrospectively.
170. Objective: This study aimed at the color Doppler ultrasound assessment in mesenteric lymphadenitis in pediatrics.
171. A new method of built in self testing for pulse doppler radar digital signal processor was advanced.
172. Under the discussion of IP decorrelation, a thorough analysis is conducted of generating mechanisms of baseline decorrelation and Doppler decorrelation and their effects on IP.
173. Objective To explore the diagnostic value of color Doppler in suprarenal tumor.
174. Laser Doppler Anemometry(LDA) is a non-contact optical method for measuring flow velocity.
175. By means of user-defined m files in MATLAB modeling typical flat fading channel such as rician fading channel and rayleigh fading channel are derived, comprising with and without doppler shift.
176. In this paper, the laser doppler method to measure the turbulence velocity of the jet propeller has been researched.
177. Method: Copper needle was placed into the tumor tissue under the guide of colored Doppler ultrasonic angiograph with a probe of 70MHZ.
178. In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
179. The main reasons of bit - error - rate in underwater acoustic communication are serious multipath fading and Doppler shift.
180. Codes used in phase coded pulse compression waveforms suffer from Doppler mismatch.
181. The Doppler frequency is extracted from the frequency output of the optical system by the circuit.
182. Doppler echocardiogaphyhas emerged as the principal clinical tool for the assessment of left ventricular diastolic function.
183. Pulse Doppler radar is a new type of radar which uses the Doppler effect due to the relative movement between the object and the radar to measure the velocity of the object.
184. Conclusions:High frequency Color Doppler ultrasound in the diagnosis of sebaceous cyst has an important value.
185. This paper introduces the principle and implementation of fetal monitor based on DSP and ultrasonic Doppler theory.
186. This will come in handy if, say, a tornado is cloaked in a rain cloud, making it invisible to the naked eye — and current Doppler radar.
187. Objective: To explore the diagnostic values of transcranial doppler (TCD) and brain-stem auditory evoked potentials ( BAEP) in vertebrobasilar ischemia (VBI) .
188. The analysis and simulation shows that this radar system has higher range resolution and insensitivity to Doppler shift, etc.
189. The blood flow of cauda equina was measured with laser Doppler flowmeter.
190. The doppler frequency is a function of the two scattering directions.
191. Early subclinical rejection was diagnosed 3 after the transplantation by color Doppler examination.
192. Tiny varicosity in above area could be found by color Doppler ultrasonograpphy.
193. The approximate equivalent relation in systems between time difference of arrival and Doppler is shown by comparing their observability degrees.
194. Purpose : To evaluate transvaginal color Doppler sonography ( TVCDS ) in the diagnosis of adenomyosis.
195. For having amicable and handling convenient interface, the module having be carried out, which is applied to the Programmed track Doppler radar.
196. Utilizing lidar to obtain the wind velocity along the line of sight by Doppler shift, then inverting these velocity vectors to real atmosphere wind group speed is a very important purpose of lidar.
197. So now we have a situation that I just described earlier that you have the Doppler shift of both objects, and remember, I told you that you also get the masses.
198. Methods: Doppler echocardiography was performed and this imaging was compared with operative findings, or with angiocardiographic findings, or with MRI findings in 41 patients.
199. Pulmonary stenosis should be detected by combination of two - dimensional echocardiography, color Doppler imaging and spectral Doppler.
200. There are the same phase places in two systems of coordinates according to the course of propagating of wave, so that the Doppler effect is produced and the relativistic Doppler effect is worked out.
201. This paper studied the lateral displacement-measurement technique by using the laser Doppler effect of the moving grating which acted as a scatterer.
202. Inferior gluteal artery can be detected with color Doppler ultrasound.
203. Objective To assesstheinternal mammary artery conduit patency using transthorcic Doppler spectrum analysis.
204. Objective To evaluate the feasibility and clinical value of color Doppler flow imaging(CDFI) guided inferior vena caval filter insertion(IVCFI).
205. Doppler Effect of light-wave propagation shows that the light-wave propagation needs the medium ("ether").
206. The results show that the Doppler background due to the near resonance of the intermediate level is eliminated and the signal of two-photon transition can be distinguished from saturation absorption.
206. is a online sentence dictionary, on which you can find excellent sentences for a large number of words.
207. By analyzing the relationship between basis expansion model (BEM) and Doppler spectrum, the authors propose a scheme based on fractional BEM for the estimation of doubly selective channel parameters.
208. Transverse power Doppler image in a 10 - month - old shows a large heterogeneous liver mass with marked vascularity.
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