作者: 進(jìn)步 時間: 2025-3-21 20:33 作者: enhance 時間: 2025-3-22 00:22 作者: 手術(shù)刀 時間: 2025-3-22 05:39 作者: STRIA 時間: 2025-3-22 11:00 作者: 鉆孔 時間: 2025-3-22 14:01 作者: 圓柱 時間: 2025-3-22 19:44 作者: ligature 時間: 2025-3-22 23:13
https://doi.org/10.1007/978-1-4615-8204-5diffraction; fast Fourier transform (FFT); holography; interference; laser; phase; research; sound; space; tr作者: DAMN 時間: 2025-3-23 01:38 作者: Hot-Flash 時間: 2025-3-23 08:53 作者: defendant 時間: 2025-3-23 09:50 作者: 分期付款 時間: 2025-3-23 16:21
https://doi.org/10.1007/978-3-540-70982-4eiver, an electronic reference, and a modulated light source which is moved in synchronism with the acoustical receiver. A photographic transparency is produced which serves as the hologram for reconstruction of the acoustic field in the optical domain. A second method employs a liquid surface to re作者: CESS 時間: 2025-3-23 21:24
,Konsequenzen für die Zulieferindustrie,ical imaging to obtain three-dimensional images of opaque objects as encountered in nondestructive testing. Equipment was fabricated to make acoustical holograms of objects in water. Acoustical holograms were recorded by mechanically scanning an acoustical point transducer over the water’s surface i作者: Embolic-Stroke 時間: 2025-3-24 00:51 作者: monogamy 時間: 2025-3-24 03:39 作者: tangle 時間: 2025-3-24 09:03 作者: nerve-sparing 時間: 2025-3-24 12:59
,Pessinunt. Die phrygischen K?nigsgr?ber,. In this fashion an acoustic beam of rectangular cross section shows up as a rectangular patch of light on a screen. Silhouettes of paper clips and other objects placed in the path of the beam can be imaged and made to appear as sharply delineated dark regions within the patch. If we place in the b作者: Emasculate 時間: 2025-3-24 15:06 作者: 專橫 時間: 2025-3-24 19:30
,Neue Rollen für Medienforscher/innen,nonlinear effects set in. These can be responsible for amplitude as well as phase distortions of the primary interfering waves. The present chapter discusses quantitatively the magnitude of the phase distortion introduced by the second-order effects of wave-wave interaction for a system of two monoc作者: disrupt 時間: 2025-3-25 02:16 作者: nonchalance 時間: 2025-3-25 07:18
Evolution und Fortschrittsglaube,The matrix representation of Gabor’s hologram is presented, and the matrix method is used to analyze the experimental results obtained. The acoustical holograms are constructed through use of sound waves of 10 kHz and 20 kHz frequency, and the virtual and conjugate images are reconstructed using las作者: 怪物 時間: 2025-3-25 10:58 作者: Flawless 時間: 2025-3-25 14:07 作者: languor 時間: 2025-3-25 17:06 作者: TRACE 時間: 2025-3-25 21:28
Anwendungs- und Planungssoftware,se are all the references that I have on the subject, but they do not necessarily represent everything that has been published. The notation “abstract” following an entry indicates that only the abstract has been published.作者: 不能根除 時間: 2025-3-26 01:00 作者: 燈泡 時間: 2025-3-26 04:19 作者: FLACK 時間: 2025-3-26 09:45 作者: rheumatology 時間: 2025-3-26 15:15
A Comparison of Acoustical Holography Methods,e bottom mud is probably transported by ice rafting from nearshore and deposited by ice melting..Preliminary data suggest that the suspended sediment distribution is controlled by river discharge and that in the nearshore, suspensates are transported to the east. Differences between suspensate weigh作者: Gyrate 時間: 2025-3-26 18:26 作者: 緊張過度 時間: 2025-3-27 00:20 作者: BILE 時間: 2025-3-27 04:59
Biomedical Prospects for Ultrasound Holography,Moore, 1988). Initially, echolocating bats were the main subjects of consideration. However, studies on echolocating aquatic mammals, whales and dolphins, increased from one meeting to the next. Indeed, aquatic mammals are of exceptional interest for studying the adaptation of sensory functions for echolocati978-1-4613-6505-1978-1-4615-3406-8作者: labile 時間: 2025-3-27 06:37
Acoustical Holographic Model of Cetacean Echo-Location, advantage of molecular markers is the objectivity of characters and of their character states (.. alternative conditions of a character) relative to morphological, physiological, and behavioural markers. The objectivity of defining discrete molecular character states also makes them easily repeatab作者: GEST 時間: 2025-3-27 10:03
The Generation of Sound,he marine environment using marine mammals as an example. Huge numbers of marine animals, including marine mammals, die every year from entanglement in fishing gear, by ingestion of litter or because of chemical pollution.?.In the last decade many technological and scientific tools have been develop作者: guardianship 時間: 2025-3-27 16:13 作者: Axillary 時間: 2025-3-27 18:38 作者: Scleroderma 時間: 2025-3-28 01:47
Digital Image Formation from Detected Holographic Data,ting its methodological advantages in the analysis of metatranscriptome. In addition to high accuracy and reproducibility, this method can evaluate gene expression using either peak patterns or compositions of sequence clusters without annotation information, which enables us to highlight previously作者: 縱欲 時間: 2025-3-28 02:54
Phase Distortions Due to Nonlinear Effects in an Acoustic Field,of substances including sesquiterpenes., C. hydrocarbons and sulphur-containing compounds., and C. hydroquinones of mixed biogenesis.. C. chromanols, also of mixed biogenetic origin, have been reported from the closely related alga .. (Figure 2). Presumably these unique substances are involved in pr作者: Popcorn 時間: 2025-3-28 06:23 作者: Ibd810 時間: 2025-3-28 12:29 作者: Calculus 時間: 2025-3-28 15:16
Ultrasonic Holography , the Ultrasonic Camera,he important aspects of nitrogen fixation as it relates to the marine environment.?This resource will be useful for researchers in the specialized field, but also useful for scientists in other disciplines who are interested in the topic. It would provide a possible text for upper division classes o作者: 機(jī)構(gòu) 時間: 2025-3-28 21:56
Acoustical Filtering with Holographically Matched Spatial Filters,. The ageing forms of different structures, systems and components vary from each other. In general, the ageing of nuclear power plant mainly includes degradation in ductility and toughness, crack propagation, thickness reduction and pitting, etc. The ageing of structures, systems and components wou作者: 小隔間 時間: 2025-3-29 01:43
Supplementary Bibliography,ffering scales best be matched? Such questions are especially pertinent in today‘s research environment. The use of indicator organisms, while certainly not new, is the corner- stone for much scientific research. In the past two decades, indicator organisms have played increasingly important roles in the deve978-1-4612-8334-8978-1-4612-3752-5作者: 懸掛 時間: 2025-3-29 03:10
,Konsequenzen für die Zulieferindustrie,s of these acoustical holograms. The effects of nonlinearities, sampling rates and pulse duration, coherent sound, and wavelength scaling on the acoustical image are discussed. The problem of three-dimensional visualization of the acoustical image is considered in detail. The third part of this pape作者: 拋射物 時間: 2025-3-29 08:50
,Konsequenzen für die Zulieferindustrie,atial frequency of an extreme ray as the maximum frequency of interest. Applying these concepts to an extended object allows us to describe it by a spatial frequency spectrum. Its bandwidth in any particular hologram can be determined from a study of the Fourier transform, which makes it possible to作者: Pituitary-Gland 時間: 2025-3-29 12:05
https://doi.org/10.1007/978-3-540-70982-4ent in an ultrasound field emanating from such a subject have yet to be fully understood or analyzed. There is little doubt, however, that given a suitably rapid detection and image presentation system, very considerable diagnostic information can be obtained by this method.作者: Default 時間: 2025-3-29 19:26
,Pessinunt. Die phrygischen K?nigsgr?ber,g various thicknesses of material on it, the scratches or deposits will show up on the screen sharply silhouetted. For example, aluminum deposited on a glass plate gives a silhouette whose opacity depends on the thickness of the deposit. By arranging a pattern of deposits of varying thickness we can作者: FLOUR 時間: 2025-3-29 20:45
Die Spaltung der modernen Evolutionstheorie,ies. Reconstructed images of the objects made from both types of holograms did not show any noticeable differences either in image geometry or in image grey scale. For the geometry and relative intensity levels in the object image to be preserved it appears that the following two conditions are nece作者: Corral 時間: 2025-3-30 02:38
Evolution und Fortschrittsglaube,d from the acoustic fields, (2) the limitation of the scanning plane, and (3) the wavelength of the sound wave. The detection by use of holographic techniques of objects buried in a model of a turbid and turbulent medium is described. Three-dimensional information storage in acoustical holograms is 作者: 否決 時間: 2025-3-30 05:40 作者: Flounder 時間: 2025-3-30 10:17 作者: 不要不誠實(shí) 時間: 2025-3-30 13:00 作者: exercise 時間: 2025-3-30 19:52 作者: heterodox 時間: 2025-3-30 23:25
250. Unfortunately, the size of the auditorium of the Douglas Advanced Research Laboratories required that attendance be by invitation only, and many deserving and interested scientists could not be present. This volume presents the proceedings of the symposium, and hopefully will help compen- sate作者: convulsion 時間: 2025-3-31 02:26
https://doi.org/10.1007/978-3-540-70982-4ound holography is presented. The rest of the paper dwells upon the various techniques in sound holography, pointing out similarities to and diversities from optical holography, chief advantages of each technique, and limitations or drawbacks of such approaches.作者: Vulnerable 時間: 2025-3-31 08:55 作者: 象形文字 時間: 2025-3-31 10:30
WIE SIEHT EINE BOHRANLAGE AUS?,is may open a new field in ultrasonics: “correlation filtering” comparable in principle to the filtering methods used in optics. Some preliminary results are demonstrated, and it is shown that this method could be used for flaw recognition.作者: 連接 時間: 2025-3-31 13:54
,Konsequenzen für die Zulieferindustrie,ic and chemical methods to values at least 11 orders of magnitude lower for the electronic techniques. The thermal techniques require ultrasonic intensities on the order of 0.1 W/cm.; the optical and mechanical methods require an average intensity of about 10. W/cm.. Examples of images produced by many of the detection techniques are given.作者: SYN 時間: 2025-3-31 18:56
https://doi.org/10.1007/978-3-540-70982-4 of achieving the resolution expected on the basis of the wavelengths and hologram apertures used. The sensitivity of the scanned hologram method greatly exceeds that of the liquid surface method but this advantage is offset by the capability for real-time imaging of the liquid surface method.作者: Assignment 時間: 2025-4-1 01:25
