low resolution brain electromagnetic tomography study
báo cáo hóa học:" Different effects of femoral and tibial rotation on the different measurements of patella tilting: An axial computed tomography study" doc
... neighboring bone rotation on the various measurements of patellar tilting, through an axial computed tomography study, to help selecting a better measurement for patella tilting and implement a rationale ... on the following inclusion criteria: Each patient's pain originated from the patellofemoral joint; Patellar pain for at least months; Pain when performing at least three of the following kneeflexing ... current study design was executed during non-weight-bearing condition Even though the close association between femoral rotation and patella tilting has helped witness the effect of the altered lower...
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báo cáo hóa học:" Cadaveric and three-dimensional computed tomography study of the morphology of the scapula with reference to reversed shoulder prosthesis" pptx
... the study and analized CT scans and cadaveric specimens and drafted the manuscript MC analized cadaveric specimens and participate in Kappa study GG analized CT scans and participate in Kappa study ... be done Scapular dry specimens were also measured independently by two observers to allow interobserver study This studies were analyzed through the Kappa index Statistics included Mann-Whitney ... three-dimensional computed tomography scapulas while in the cadaveric group was of 2,35 (ranging from 2,00 to 2,73) The "shortneck" group represented the 41,82% in the three-dimensional computed tomography scapulas...
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Assessing regional hydro climate impacts using high resolution climate modelling a study over vietnam
... high spatial resolutions over a chosen limited area of the globe The minimum horizontal spatial resolution that is commonly used for a RCM is around 10-20 km though lower and higher resolutions ... not allow regional examinations such as water balances or trends of extreme precipitation due to their coarse grid resolution This clearly applies to impact studies, say, in the case of studying ... Asian climate change, this thesis focused on Vietnam as the main study region A systematic ensemble high resolution climate modelling study over Vietnam has been performed Applying two widely used...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 1
... HIGH -RESOLUTION X-RAY STUDY OF PHASE AND DOMAIN STRUCTURES AND THERMALLY-INDUCED PHASE TRANSFORMATIONS IN PZN-(4.5-9)%PT ... Sample Preparation for Surface Layer Study 4.2.1 4.2.2 4.3 Mechanical Polishing Fracturing Technique Surface Layer Identification Methods 4.3.1 4.3.2 High -resolution Synchrotron Radiation 4.3.3 ... is T Fig 2.11 (a) High -resolution TEM image taken from a [001] PMN-0.35PT single crystal; (b) power spectrum (fast Fourier transform) obtained from the image; and (c) High -resolution TEM image...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 2
... solids, the RSM of the “deformed layer” shows consistently the following: (1) The smearing is only towards lower 2θ values such that the lower 2θ reflection appears more like a one-sided shoulder extending ... Only a fine main (002)R peak at 2θ ≈ 44.62° remains and the lower 2θ peak is no longer present These results strongly suggest that the lower 2θ peak shown in Figure 5.1(a) pertains to the surface ... are two plausible causes for the presence of the lower 2θ peak One likely cause is that, since the samples have been mechanically polished, the lower 2θ peak may reflect a plastically deformed,...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 3
... 2θ Figure 5.12 Effect of increasing poling field on the lower 2θ peak for as-polished samples without any prior annealing Note that the lower 2θ peak is largely eliminated after poling to 1.5 ... prior poling treatment Note the persistence of the lower 2θ peak after poling to 1.5 kV/mm at room condition Sample thickness is 1mm 76 (b) High -resolution synchrotron RSMs revealed that this surface ... E-field of increasing strength was applied to the as-polished sample This figure shows that the lower 2θ peak is no longer present after the poling field was increased to 1.5 kV/mm Thus, an appropriate...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 4
... observed under the crossed polarizers (Figure 5.8) Despite the above, the lower 2θ peak is always present in the x-ray profile following any direction of polishing, suggesting that the surface phase ... position of the lower 2θ peak shifted to 2θ ≈ 43.95° Subsequent annealing at 400 °C for h did not produce significant change to either the position or intensity of this peak The lower 2θ peak persisted ... present regardless of the direction and/or mode of polishing This behavior can be explained in the following way If the polishing 66 a b c [010] 50 µm [100] Figure 5.7 Surface domain patterns of the...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 5
... dispersion was also noted at low temperature, i.e., ≤ 65 °C, a phenomenon attributed to the low temperature dielectric relaxation process by earlier researchers [97] In what follows, we shall focus our ... except at the Tmax This phenomenon can be attributed to the following observations Firstly, the dynamic relaxation processes at low temperature may have masked the anomalies in the ε’ displayed ... 98], as so illustrated in Figure 6.3 The second criterion is that no third order invariant is allowed in any second order transformation between a group-subgroup Examples of such include the R-MA...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 6
... along the eight pc directions Since the high precision diffractometer used in the HR-XRD study only allows direct (nearly untilted) diffracted beam in the 2θ plane to be detected, what actually ... The projections can compared with the experimental diffraction patterns obtained from the HR-XRD study of [100]L×[010]W×[001]T PZN-4.5%PT single crystals 7.2 Theoretical considerations of rhombohedral ... convoluted diffractions could be detected by the high-precision diffractometer used in the HR-XRD study This is especially true for small R tilt angle (i.e., 90º - αR) and when the residual stress...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 7
... as the low- temperature” phase(s), or “LT” phase(s) for short To ascertain whether the room temperature phase in PZN-(7-8)%PT single crystals is a (R+T) mixture or a true M phase, the following ... diffractions be detected but not (001)T diffractions? To answer this observation, we shall study below what fracturing may to the population ratio of (100)T to (001)T 135 domains in the exposed ... carried out The PZN-8%PT sample was heated up to higher temperatures and the RSMs were taken to follow the changes induced by the thermal effect The results of the heating experiment are given in...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 8
... respectively (see inset) There followed a period of no current activities on further heating until about 165 ºC, at which a stronger current signal was detected, followed by a string of weak current ... decrease in 1/ε’) was observed over the temperature range of 160-173 °C The latter anomaly was followed by a frequency dependent ε’ maximum (at Tmax), which may be attributed to the dynamic relaxation ... (annealed) PZN-8%PT sample during the ZFH The ε’ increased gradually with temperature initially, followed by a weak anomaly over the temperature range of about 90-105 °C This anomaly can be more readily...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 9
... the presence of residual stresses in the crystal, the MPB, in effect, has been extended to much lower PT level For instance, a mixture of (R+Tσ) phases are detected in PZN-(6-8)%PT at room temperature, ... metastable T micro- and nanotwin domains stabilized by the residual stress in the crystal This lower PT boundary of the extended MPB is shaded in red in Figure 9.1 for easy reference It should ... extended (R+T) MPB region The extended (R+T) MPB region can be divided into two regions In the lower PT region, 6% ≤ x ≤ 8%, the T phase is metastable, denoted by Tσ The Tσ is stabilized by the...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 10
... single C phase (c) The expanded (R+T) MPB region can be further divided into two regions In the lower PT region, 0.06 ≤ x ≤ 0.08, the T phase is metastable stabilized by the residual stress in ... (R+T) phase are thermodynamically stable phases at room temperature (d) The FWHM suggests that with lower PT contents (i.e., 0.045 ≤ x ≤ 0.07), the R phase has a mixed micro- and nanotwin structure ... predominantly of {110}-type micro/nanotwin, as manifested by the single R peak of much smaller FWHM (e) In lower PT contents (i.e., 0.045 ≤ x ≤ 0.07), the room temperature R phase of poled crystals is under...
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High resolution x ray diffraction study of phase and domain structures and thermally induced phase transformations in PZN (4 5 9)%PT 11
... Diffraction theory of nanotwin superlattices with low symmetry phase, Phys Rev B, 74, p 104109 2006 48 Wang, Y U Diffraction theory of nanotwin superlattices with low symmetry phase: application to rhombohedral ... PZN-PT single crystals considering the transformations from M to C, R to MC, and MB to T are not allowed in perovskite structure as according to Landau theory In addition, experimental analysis involving ... crystals This expanded (R+T) MPB region can be further divided into two different regions In the low PT region (i.e., 0.06 ≤ x ≤ ≈ 0.08), the room temperature T phase is metastable stabilized by...
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Báo cáo y học: " Low central venous saturation predicts poor outcome in patients with brain injury after major trauma: a prospective observational study" pot
... hours from the trauma This prospective observational study, followed the principles of the Helsinki declaration and national ethical guidelines The study was authorized by the Local Scientific committee ... injury We assumed that a persistent low ScvO2 could be the expression of the dangerous effects of generalized and, concomitant, brain hypoperfusion in patients with brain injury and major trauma and, ... trauma (67%) and concluded that focus on brain injuries prevention is imperative To our knowledge, no studies have evaluated ScvO2 in patients affected by brain injury after major trauma so far...
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A multi resolution study of the moment method solution to integral equations arising in electromagnetic problems
... motivates the study of wavelets, as a means for sparsifying the impedance matrix, to obtain an efficient solution 1.4 Objectives In this report, a multi -resolution study of two three-dimensional electromagnetic ... Motivation for a wavelet multi -resolution analysis of electromagnetic problems Wavelet analysis have several properties that are desirable in the numerical solution of electromagnetic problems First, ... translations and dilations of which form a (multi -resolution) basis for L2 ޒ 2.1 What is a multi -resolution analysis? The concept of multi -resolution analysis centres around the decomposition...
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Experimental study of operation performance of a low power thermoelectric cooling dehumidifier
... Conditioning (GB 50019-2003), the allowable indoor relative humidity should range from 40 % to 65 % in summer and from 40 % to 60 % in winter Therefore, in this experiment, the lower limit of the relative ... the runoff flow along the gravity direction was dominated The fin surfaces became relatively clean again At the same time, the temperature of cold-side fins still remained a steady low temperature ... square of the current through the module [4] When the input power is too low, the Peltier effect is weak, resulting in a low dehumidifying rate On the contrary, when the input power is too high,...
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LOW FREQUENCY IGBT CONVERTER FOR CONTROL EXCITING FORCE OF ELECTROMAGNETIC VIBRATORY CONVEYORS
... EVCD it is possible to overcome this problem In the present paper this is obtained by generating low frequency triangle current pulses of EVA One possibility is to use half-bridge like in Fig.4 ... in Fig.5 A high performance exciting force control of EVCD requires a detailed analysis of their electromagnetic and mechanical part Another type power converter- bidirectional with AC output current, ... same frequency coil EVA as shown in Fig.3(b) Fig.5 Principal block diagram of regulated EVCD 2.1 -Electromagnetic part Detailed electrical model of EVA is derived in [5] It can be written as [10-13]:...
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Báo cáo " The effects of pictures on the reading comprehension of low-proficiency Taiwanese English foreign language college students: An action research study " ppt
... pictures remains (Lowe [18]) The prevailing assumption is that pictures simply entertain and are thus an inappropriate tool for adult learning (Thomas, Place, & Hillyard [19]) This study re-examines ... for texts increases the reading comprehension of low- proficiency EFL college students The specific research questions are: ● Do pictures give low- level learners a better understanding of text ... proficiency level? ● Do pictures also facilitate low- level learners’ understanding of text that exceeds their proficiency level? The hypothesis of this study is that regardless of whether text meets...
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Interphone study reports on mobile phone use and brain cancer risk pot
... the UK under contracts which preserved the independence of the study Results The Interphone Study Group summarized its findings as follows: "A reduced odds ratio (OR) related to ever having been ... million € (2.5%) of the overall study costs were provided directly by the industry, in Canada and France, under contracts which preserved the independence of the study Other funding was provided ... Page Interphone study reports on mobile phone use and brain cancer risk Union against Cancer) to guarantee the independence of the...
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