Evaluation of Interfacial Strength of BNT Films Hydrothermally Deposited on Titanium Substrates

Lead-free piezoelectric (Bi1/2Na1/2)TiO3 (abbreviated as BNT) films were deposited on 0.2 mm thick pure titanium(Ti) substrates by a hydrothermal method. Scratch tests and Vickers indentation tests were performed to quantitatively assess the adhesion strength between BNT films and Ti substrates. Some of Ti substrates were pretreated by chemical polish and mechanical polish respectively prior to BNT film deposition with a view of investigating the effects of substrate surface pretreatments on the adhesion of BNT films. In the scratch test, the critical force was determined from the variations of the tangential force and the acoustic emission (AE) signals with the normal force. The scratch test results revealed that the chemical polish pretreatment effectively improved the adhesion of BNT films. In addition, the critical substrate strain inducing the adhesion failure of BNT films has been investigated by the Vickers indentation test combined with finite element analysis (FEM)

Inflaton field governed universe from NKK theory of gravity: stochastic approach

We study a nonperturbative single field (inflaton) governed cosmological model from a 5D Noncompact Kaluza-Klein (NKK) theory of gravity. The inflaton field fluctuations are estimated for different epochs of the evolution of the universe. We conclude that the inflaton field has been sliding down its (quadratic) potential hill along all the evolution of the universe and a mass of the order of the Hubble parameter. In the model here developed the only free parameter is the Hubble parameter, which could be reconstructed in future from Super Nova Acceleration Probe (SNAP) data.Comment: accepted in European Physical Journal

Reconclining phi radiative decays with other data for a0(980), fo(980), pi-pi -> KK and pi-pi -> eta-eta

Data for phi -> gamma (eta-pizero) are analysed using the KK loop model and compared with parameters of a0(980) derived from Crystal Barrel data. The eta-pi mass spectrum agrees closely and the absolute normalisation lies just within errors. However, BES parameters for fo(980) predict a normalisation for phi -> gamma (pizero-pizero) at least a factor 2 lower than is observed. This discrepancy may be eliminated by including constructive interference between fo(980) and sigma. The magnitude required for sigma -> KK is consistent with data on pi-pi -> KK. A dispersion relation analysis by Buttiker, Descotes-Genon and Moussallam of pi-pi -> KK leads to a similar conclusion. Data on pi-pi -> eta-eta also require decays of sigma to eta-eta. Four sets of pi-pi -> KK data all require a small but definite fo(1370) signal.Comment: 21 pages, 11 figures, Small rearrangement of reference

Educational Benefits for Nursing Students by Measuring Basal-Body-T emperature

基礎体温測定による教育効果を明らかにする目的で、研究に同意の得られた*名の看護学生を対象に、基礎体温測定に必要な保健指導内容の記述量の変化を基礎体温測定前後で体験学習の効果を検討した。基礎体温測定は、体験群25名、棄権群53名と未体験群10名であった。基礎体温測定後、体験群(3か月間基礎体温測定をした学生)、棄権群(途中で基礎体温測定を中止してしまった学生)と未体験群(最初から基礎体温測定をしなかった学生)ともに保健指導に必要な知識の理解は高まった。基礎体温測定前では、保健指導内容の正解人数は棄権群より体験群の方に知識が高い傾向がみられた。基礎体温測定後は正解人数が棄権群より体験群の方が多くみられた。以上のことから、基礎体温測定に必要な保健指導内容の知識の獲得に基礎体温測定体験による効果があると示唆された。This research was designed to examine the effectiveness of an experiential learning study of the measurement of basal-body-temperature (BBT). Initially, eighty-eight nursing students agreed to participate in this measurement practice for three months. The necessary knowledge for guidance in BBT measurement gained by these students was reviewed through changes in the volume of explanations offered to health guidance questions that students offered before and after the BBT measurement experience. Of the eighty-eight nursing students who agreed to participate, twenty-five students who agreed to participate, twenty-five students continued BBT measurement for all three months, fifty-three students gave up measuring halfway and ten students did not measure at all. Understanding of the knowledge required for health guidance improved in all three groups following the BBT measurement study. The number of students that answered health guidance questions correctly after the measurement experience, however, was greater in the student group that completed the experience than the student group that gave up on it. These results suggest that experiencing BBT measurement firsthand is an effectivemeans to acquiring the knowledge necessary to give health guidance in BBT measurement.departmental bulletin pape

Jurassic Greenways: Planning a Dinosaur Trail for the Connecticut River Valley

Greenways often combine natural, historic/cultural, and recreational resources (Fábos 1995). However, there has been less integration with scientific interpretation, particularly in the area of paleontology and geology, except for a few notable examples. The current threat of global climate compels a look back in geologic time to how different landscapes, ecosystems, and human settlements evolved and adapted to rapidly changing climatic and environmental conditions. This study involves research and project development of a greenway and trail network that connects the important historical and cultural sites related to dinosaurs in New England’s Connecticut River Valley of Massachusetts and Connecticut (USA). The project is a partnership of museums, cultural sites, and tourist businesses related to the discovery of dinosaur tracks and other significant paleo-geologic sites (www.jurassicroadshow.com). The lead organization, the Pocumtuck Valley Memorial Association, a historic museum in Deerfield, MA (www.deerfieldma. org), is developing an interactive web-site called the Impressions from a Lost World that is the beginning point for this project, which was conducted as part of a graduate landscape architecture studio at the University of Massachusetts, Amherst under the direction of Professor Robert L. Ryan

Characterisation of the topography of metal additive surface features with different measurement technologies

The challenges of measuring the surface topography of metallic surfaces produced by additive manufacturing are investigated. The differences between measurements made using various optical and non-optical technologies, including confocal and focus-variation microscopy, coherence scanning interferometry and x-ray computed tomography, are examined. As opposed to concentrating on differences which may arise through computing surface texture parameters from measured topography datasets, a comparative analysis is performed focussing on investigation of the quality of the topographic reconstruction of a series of surface features. The investigation is carried out by considering the typical surface features of a metal powder-bed fusion process: weld tracks, weld ripples, attached particles and surface recesses. Results show that no single measurement technology provides a completely reliable rendition of the topographic features that characterise the metal powder-bed fusion process. However, through analysis of measurement discrepancies, light can be shed on where instruments are more susceptible to error, and why differences between measurements occur. The results presented in this work increase the understanding of the behaviour and performance of areal topography measurement, and thus promote the development of improved surface characterisation pipelines

Jacob Becker

25-2Committee on Revolutionary PensionsReport : Petition of J. Becker. [335] British and Indians in 1778.1838-7

The Control Characteristics of the Thyristor Chopper

8KJ00003546953論文Articledepartmental bulletin pape

High Monocyte CD300e Expression in Patients with Acute Onset Type 1 Diabetes

Type 1 diabetes (T1D) is characterized by immune-related pancreatic β-cell destruction. The CD300e antibody level transiently increases during the acute phase of fulminant T1D (FT1D). Here, we investigated the contribution of CD300e to T1D development. Monocytes were obtained from 20 patients with FT1D, 25 with acute onset T1D (AT1D), 14 with type 2 diabetes (T2D), and 17 healthy controls (HCs). Additionally, peripheral blood mononuclear cells (PBMCs) were obtained from 8 patients with FT1D, 12 with AT1D, 11 with T2D, and 9 HCs. Using flow cytometry, we analyzed CD300e expression in monocytes and myeloid dendritic cells in PBMCs. Tumor necrosis factor (TNF)-α was measured after the stimulation of monocytes with 3.3 ng/µL sphingomyelin (SM), a CD300e ligand. The percentage of CD300e-positive cells in the monocytes of patients with AT1D was higher than that in those of HCs (p = 0.006). The percentage of CD300e-positive cells was higher in female participants than in male participants, and was negatively correlated with the estimated glomerular filtration rate and age (sex p = 0.023, eGFR p = 0.028, age p = 0.023). There was no difference in SM-stimulated TNF-α production by monocytes among diabetic subtypes. We showed differences in CD300e expression in human monocytes with diabetes type, sex, age, and renal function. These results provide information on the physiological features of CD300e and insights into the role of CD300e in AT1D pathogenesis.departmental bulletin pape

Field

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