Development of ultrasonic motor with a coil type stator and its application to vascular endoscope

IVUS (Intravascular Ultrasound) is a useful medical device to observe the thrombus in blood vessels, and such a micro motor less than 1.0 mm in outer diameter is desired to apply IVUS in narrow brain vessels. In our previous works, ultrasonic motor consisting of a wire coil type stator, a waveguide, a cylindrical rotor, an ultrasonic vibrator has been developed. This motor is rather easy to miniaturize because of its simple structure. However, this motor behavior is unstable rotate. To improve these problems, a foil type stator has been applied in stead of a wire coiled stator. An ultrasonic motor with 0.05 mm thick foil type stator was manufactured and tested their performances. It was able to verify that this ultrasonic motor with a foil type stator has the right quality. So, simplified IVUS system using ultrasonic motor with a foil type stator was manufactured and tested their fundamental performances. In order to expand development of new application, ultrasonic motor with a shortened waveguide and ultrasonic motor integrated driving unit with a stator was developed

RE-CONCEIVING REFUGEE SITUATIONS FROM A DEVELOPMENT PERSPECTIVE. PROVIDING DURABLE SOLUTIONS FOR REFUGEES THROUGH DEVELOPMENT

!is paper examines the changing character of forced displacement and its impact on the lives of refugees and their host countries. !e paper proposes the need to re-conceptualize the issue of refugees from a development perspective, recognizing that the forced displacement resulting in refugee situations is both a product and cause of development (or lack thereof ). Conceiving of refugee situations within a broader development perspective provides a constructive path for the international community to provide truly durable solutions that can expand people’s freedoms, opportunities and capabilities to achieve a fulfilling life and reduce global inequal-ities and instability. !e first section discusses the failure of states to facilitate the three durable solutions in the face of the changing character of refugee movements. !e second section proposes reconceiving refugee situations as a development issue, the need for bridging the humanitarian-development gap, and the need for counteracting the negative discourse surrounding refugees in order to build on the opportunities that refugees present. !e third section provides examples to demon-strate how refugees are creating livelihood solutions for themselves, the contribu-tions they are making to their host societies, and how development-led solutions can help support refugees and better manage the long-term developmental conse-quences of protracted refugee situations.Este artigo examina as transformações dos deslocamentos forçados e o seu impacto na vida dos refugiados e nos seus países de acolhimento. O artigo propõe re-con-cetualizar a questão dos refugiados a partir de uma perspetiva de desenvolvimento, reconhecendo que o deslocamento forçado é tanto um produto quanto uma causa do desenvolvimento (ou a falta dele). Conceber a situação de refugiados dentro de uma perspetiva de desenvolvimento mais ampla constitui um caminho construtivo para a comunidade internacional fornecer soluções realmente duradouras capazes de expandir a liberdade, oportunidades e capacidades das pessoas para alcançar uma vida plena e reduzir as desigualdades e instabilidades globais. Na primeira parte, discute-se o fracasso dos estados em facilitar três soluções duráveis diante do caráter mutável dos movimentos de refugiados. Na segunda parte, propõe-se enca-rar a situação dos refugiados como uma questão de desenvolvimento, a necessidade de colmatar a falta de desenvolvimento-humanitário e a necessidade de contrariar o discurso negativo sobre os refugiados, de forma a dar a devida importância às oportunidades que a presença de refugiados apresenta. Na terceira parte, fornecem-se exemplos para demonstrar a maneira como os refu-giados criam soluções de subsistência para si mesmo, as suas contribuições para com as sociedades que os recebem e como as soluções conduzidas pelo desenvol-vimento podem ajudar o apoio aos refugiados e a gestão a longo prazo da presença prolongada de refugiados

Development of ultrasonic motor with a coil type stator and its application to vascular endoscope

IVUS (Intravascular Ultrasound) is a useful medical device to observe the thrombus in blood vessels, and such a micro motor less than 1.0 mm in outer diameter is desired to apply IVUS in narrow brain vessels. In our previous works, ultrasonic motor consisting of a wire coil type stator, a waveguide, a cylindrical rotor, an ultrasonic vibrator has been developed. This motor is rather easy to miniaturize because of its simple structure. However, this motor behavior is unstable rotate. To improve these problems, a foil type stator has been applied in stead of a wire coiled stator. An ultrasonic motor with 0.05 mm thick foil type stator was manufactured and tested their performances. It was able to verify that this ultrasonic motor with a foil type stator has the right quality. So, simplified IVUS system using ultrasonic motor with a foil type stator was manufactured and tested their fundamental performances. In order to expand development of new application, ultrasonic motor with a shortened waveguide and ultrasonic motor integrated driving unit with a stator was developed

Development of ultrasonic motor with a coil type stator and its application to vascular endoscope

IVUS (Intravascular Ultrasound) is a useful medical device to observe the thrombus in blood vessels, and such a micro motor less than 1.0 mm in outer diameter is desired to apply IVUS in narrow brain vessels. In our previous works, ultrasonic motor consisting of a wire coil type stator, a waveguide, a cylindrical rotor, an ultrasonic vibrator has been developed. This motor is rather easy to miniaturize because of its simple structure. However, this motor behavior is unstable rotate. To improve these problems, a foil type stator has been applied in stead of a wire coiled stator. An ultrasonic motor with 0.05 mm thick foil type stator was manufactured and tested their performances. It was able to verify that this ultrasonic motor with a foil type stator has the right quality. So, simplified IVUS system using ultrasonic motor with a foil type stator was manufactured and tested their fundamental performances. In order to expand development of new application, ultrasonic motor with a shortened waveguide and ultrasonic motor integrated driving unit with a stator was developed

Anisotropic softening of collective charge modes in the vicinity of critical doping in a doped Mott insulator

Momentum resolved inelastic resonant x-ray scattering is used to map the evolution of charge excitations over a large range of energies, momenta and doping levels in the electron doped Mott insulator class Nd$_{2-x}$Ce$_x$CuO$_4$. As the doping induced AFM-SC (antiferromagnetic-superconducting) transition is approached, we observe an anisotropic softening of collective charge modes over a large energy scale along the Gamma to (\pi,\pi)-direction, whereas the modes exhibit broadening ($\sim$ 1 eV) with relatively little softening along Gamma to (\pi,0) with respect to the parent Mott insulator (x=0). Our study indicates a systematic collapse of the gap consistent with the scenario that the system dopes uniformly with electrons even though the softening of the modes involves an unusually large energy scale.Comment: 5 pages + 5 Figure

A METHOD OF BENZENE EXPOSURE ESTIMATION CONSIDERING THE INFLUENCE OF THE BUILDING FORM FACED TO MAIN

Joint Research on Environmental Science and Technology for the Eart

Statistical analysis of magnetic divertor configuration influence on H-mode transitions

DIII-D plasmas are compared for two upper divertor configurations: with the outer strike point on the small angle slot (SAS) divertor target and with the outer strike point on the horizontal divertor target (HT). Scanning the vertical distance between the magnetic null point and the divertor target over a range 0.10–0.16 m is shown to increase the threshold power, Pth , and edge plasma power, PLoss , for the low-to-high confinement (L–H) and H–L transitions respectively, by up to a factor of 1.4. The X-point height scans were performed at three L-mode core plasma line average electron densities, n¯e= 1.2, 2.2 and 3.6 ×1019m−3 , to investigate the density dependence of divertor magnetic configuration influence on Pth . The X-point height, Zx-pt , was further extended across the range 0.16–0.22 m with the more open HT divertor configuration, for which a clear decrease in Pth with increasing Zx-pt is observed. The dependence of Pth on divertor magnetic geometry is further investigated using a time-dependent probability density function (PDF) model and information geometry to elucidate the roles played by pedestal plasma turbulence and perpendicular velocity flows. The degree of stochasticity of the plasma turbulence is observed to be sensitive to the plasma heating rate. The calculated square of the information rate shows changes in the relative density fluctuations and perpendicular velocity PDFs begin 2–5 ms prior to the L–H transition for three plasmas; providing a crucial measurement of the dynamic timescale of external transport barrier formation. Additionally, both information length and rate provide potential predictors of the L–H transition for these plasmas