Research on Prediction of Press-Forming and Spring Back of Spiral Plates by FEM Simulation

Sande Gao,Keijiro Nakasa (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8

In order to provide technical supports for designing a new type of spiral plate forming machine, FEM analysis and simulation were carried out based on pressing tests. Deformation, stress distribution, residual stress and spring back of the spiral plate were calculated. Relationships between the spiral pitch to inclination angle of the punch and die, material properties and thickness of the plate were analyzed. A data converter was developed effectively used in the analysis.

THE SAMI GALAXY SURVEY: REVISITING GALAXY CLASSIFICATION THROUGH HIGH-ORDER STELLAR KINEMATICS

Sande, Jesse van de,Bland-Hawthorn, Joss,Fogarty, Lisa M. R.,Cortese, Luca,d’Eugenio, Francesco,Croom, Scott M.,Scott, Nicholas,Allen, James T.,Brough, Sarah,Bryant, Julia J.,Cecil, Gerald,Colless, Ma American Astronomical Society 2017 The Astrophysical journal Vol.835 No.1

<P>Recent cosmological hydrodynamical simulations suggest that integral field spectroscopy can connect the high-order stellar kinematic moments h(3) (similar to skewness) and h(4) (similar to kurtosis) in galaxies to their cosmological assembly history. Here, we assess these results by measuring the stellar kinematics on a sample of 315 galaxies, without a morphological selection, using two-dimensional integral field data from the SAMI Galaxy Survey. Proxies for the spin parameter (lambda(Re)) and ellipticity (epsilon(e)) are used to separate fast and slow rotators; there exists a good correspondence to regular and non-regular rotators, respectively, as also seen in earlier studies. We confirm that regular rotators show a strong h(3) versus V/sigma s anti-correlation, whereas quasi-regular and non-regular rotators show a more vertical relation in h(3) and V/sigma. Motivated by recent cosmological simulations, we develop an alternative approach to kinematically classify galaxies from their individual h(3) versus V/sigma signatures. Within the SAMI Galaxy Survey, we identify five classes of high-order stellar kinematic signatures using Gaussian mixture models. Class 1 corresponds to slow rotators, whereas Classes 2-5 correspond to fast rotators. We find that galaxies with similar lambda(Re)-epsilon(e) -values can show distinctly different h(3)-V/sigma signatures. Class 5 objects are previously unidentified fast rotators that show a weak h(3) versus V/sigma anti-correlation. From simulations, these objects are predicted to be disk-less galaxies formed by gas-poor mergers. From morphological examination, however, there is evidence for large stellar disks. Instead, Class 5 objects are more likely disturbed galaxies, have counter-rotating bulges, or bars in edge-on galaxies. Finally, we interpret the strong anti-correlation in h(3) versus V/sigma as evidence for disks in most fast rotators, suggesting a dearth of gas-poor mergers among fast rotators.</P>

Production of omega 3, 6, and 9 fatty acids from hydrolysis of vegetable oils and animal fat with Colletotrichum gloeosporioides lipase

Sande, Denise,Colen, Gecernir,dos Santos, Gabriel Franco,Ferraz, Vany Perpetua,Takahashi, Jacqueline Aparecida 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.2

Hydrolysis of vegetable oils (Olive, corn, peanut, sesame, flaxseed, soy, canola, garlic, sunflower, almond, castor bean oils) and beef marrow bone oil by Colletotrichum gloeosporioides lipase was studied. The enzyme was capable of generating free fatty acids from all oils tested. The higher hydrolytic activity of the enzyme was towards olive (18.0 IU) and soybean (17.8 IU) oils. The average percentage of essential fatty acids generated from hydrolysis of the oils was 32.92% of omega 9 (as oleic acid C18:1), 26.24% of omega 6 (linoleic C18:2), and 5.86% of omega 3 (such as ${\alpha}$-linolenic acid C18:3). Comparison between chromatographic profile of the oils and its enzymatic hydrolysate showed a good equivalence, stressing the applicability of these vegetable substrates under the action of lipase from C. gloeosporioides produce essential fatty acids, being more efficient production of ${\alpha}$-linolenic acid from flaxseed oil, linoleic acid from sunflower oil, and oleic acid from olive.

Production of omega 3, 6, and 9 fatty acids from hydrolysis of vegetable oils and animal fat with Colletotrichum gloeosporioides lipase

Denise Sande,Gecernir Colen,Gabriel Franco dos Santos,Vany Perpe´tua Ferraz,Jacqueline Aparecida Takahashi 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.2

Hydrolysis of vegetable oils (Olive, corn, peanut, sesame, flaxseed, soy, canola, garlic, sunflower, almond, castor bean oils) and beef marrow bone oil by Colletotrichum gloeosporioides lipase was studied. The enzyme was capable of generating free fatty acids from all oils tested. The higher hydrolytic activity of the enzyme was towards olive (18.0 IU) and soybean (17.8 IU) oils. The average percentage of essential fatty acids generated from hydrolysis of the oils was 32.92% of omega 9 (as oleic acid C18:1), 26.24% of omega 6 (linoleic C18:2), and 5.86% of omega 3 (such as a-linolenic acid C18:3). Comparison between chromatographic profile of the oils and its enzymatic hydrolysate showed a good equivalence, stressing the applicability of these vegetable substrates under the action of lipase from C. gloeosporioides produce essential fatty acids, being more efficient production of alinolenic acid from flaxseed oil, linoleic acid from sunflower oil, and oleic acid from olive.

The SAMI Galaxy Survey: revising the fraction of slow rotators in IFS galaxy surveys

van de Sande, Jesse,Bland-Hawthorn, Joss,Brough, Sarah,Croom, Scott M.,Cortese, Luca,Foster, Caroline,Scott, Nicholas,Bryant, Julia J.,d'Eugenio, Francesco,Tonini, Chiara,Goodwin, Michael,Konstantopou Oxford University Press 2017 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.472 No.2

<P>The fraction of galaxies supported by internal rotation compared to galaxies stabilized by internal pressure provides a strong constraint on galaxy formation models. In integral field spectroscopy surveys, this fraction is biased because survey instruments typically only trace the inner parts of the most massive galaxies. We present aperture corrections for the two most widely used stellar kinematic quantities V/sigma and lambda(R) (spin parameter proxy). Our demonstration involves integral field data from the SAMI (Sydney-AAO Multi-object Integral-field spectrograph) Galaxy Survey and the ATLAS(3D) survey. We find a tight relation for both V/sigma and lambda(R) when measured in different apertures that can be used as a linear transformation as a function of radius, i.e. a first-order aperture correction. In degraded seeing, however, the aperture corrections are more significant as the steeper inner profile is more strongly affected by the point spread function than the outskirts. We find that V/sigma and lambda(R) radial growth curves are well approximated by second-order polynomials. By only fitting the inner profile (0.5R(e)), we successfully recover the profile out to one R-e if a constraint between the linear and quadratic parameter in the fit is applied. However, the aperture corrections for V/sigma and lambda(R) derived by extrapolating the profiles perform as well as applying a first-order correction. With our aperture-corrected lambda(R) measurements, we find that the fraction of slow rotating galaxies increases with stellar mass. For galaxies with log M-*/M-circle dot > 11, the fraction of slow rotators is 35.9 +/- 4.3 per cent, but is underestimated if galaxies without coverage beyond one R-e are not included in the sample (24.2 +/- 5.3 per cent). With measurements out to the largest aperture radius, the slow rotator fraction is similar as compared to using aperture-corrected values (38.3 +/- 4.4 per cent). Thus, aperture effects can significantly bias stellar kinematic integral field spectrograph studies, but this bias can now be removed with the method outlined here.</P>

Multimedia Principles and Social Networking in Open, Online, Mathematics, Homework Help

Carla Van De Sande 한국교육공학회 2012 한국교육공학회 학술대회발표자료집 Vol.2012 No.1

교회 맴버십을 진지하게 받아들여라

켄 산데 두란노 2005 목회와 신학 Vol.- No.193

주간 리더십이라는 단체에서 조사한 바에 의하면, 전체 응답자의 3분의 1이 교회안에서 멤버십은그리 중요하지 않은 것으로 생각한다고 응답했다. 38%는 성도로서 가끔 공동체에 합류하고 34%는 멤버십에 대해 아주 가끔 매력을 느끼며, 나머지 응답자들은 그들의 교회가 멤버십에 대해 거의 또는 전혀 강조하지 않고 있다고 대답했다. 전문가들이 볼 때 이런 경향은 지도자들의 실수이며 우리의 태도와 평소의 안일함이 만들어낸 결과다. 교회는 여객선보다 전투함이 돼야 한다는 피스메이커 사역자 켄 산데 총재는 변화를 위해 우리는 교회 멤버십의 의미와 중요성을 다시 기억해야 한다고 강조한다. 멤버십의 강조만큼 늘어나고 있는 소송 사건에 대해 교회를 보호하는 도구는 없다.

The SAMI Galaxy Survey: Mass as the Driver of the Kinematic Morphology-Density Relation in Clusters

Brough, Sarah,van de Sande, Jesse,Owers, Matt S.,d’Eugenio, Francesco,Sharp, Rob,Cortese, Luca,Scott, Nicholas,Croom, Scott M.,Bassett, Rob,Bekki, Kenji,Bland-Hawthorn, Joss,Bryant, Julia J.,Davies, R American Astronomical Society 2017 The Astrophysical journal Vol.844 No.1

<P>We examine the kinematic morphology of early-type galaxies (ETGs) in eight galaxy clusters in the Sydney-AAO Multi-object Integral-field spectrograph Galaxy Survey. The clusters cover a mass range of 14.2 < log(M-200/M-circle dot) < 15.2 and we measure spatially resolved stellar kinematics for 315 member galaxies with stellar masses 10.0 < log(M-*/M-circle dot) <= 11.7 within 1 R-200 of the cluster centers. We calculate the spin parameter, lambda(R), and use this to classify the kinematic morphology of the galaxies as fast or slow rotators (SRs). The total fraction of SRs in the ETG population is F-SR = 0.14 +/- 0.02 and does not depend on host cluster mass. Across the eight clusters, the fraction of SRs increases with increasing local overdensity. We also find that the slow-rotator fraction increases at small clustercentric radii (R-cl < 0.3 R-200), and note that there is also an increase in the slow-rotator fraction at R-cl similar to 0.6 R-200. The SRs at these larger radii reside in the cluster substructure. We find that the strongest increase in the slow-rotator fraction occurs with increasing stellar mass. After accounting for the strong correlation with stellar mass, we find no significant relationship between spin parameter and local overdensity in the cluster environment. We conclude that the primary driver for the kinematic morphology-density relationship in galaxy clusters is the changing distribution of galaxy stellar mass with the local environment. The presence of SRs in the substructure suggests that the cluster kinematic morphology-density relationship is a result of mass segregation of slow-rotating galaxies forming in groups that later merge with clusters and sink to the cluster center via dynamical friction.</P>

SAMI Galaxy Survey Data Release 2: Absorption-line Physics

Sree Oh,Nicholas Scott,Jesse van de Sande,SAMI team 한국천문학회 2018 天文學會報 Vol.43 No.2

Formation of Fine Protrusions by Sputter Etching of Stainless Steels and Evaluation of Gripping Ability of Fiber Sheets

Masayoshi Nakamura,Keijiro Nakasa,Yudai Kitamika,Sande Gao,Tsunetaka Sumomogi 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.4

Argon ion sputter etching of AISI type 420 stainless steels was carried out at a power of 250 W for 14.4 ks to form coneshaped protrusions with bottom diameters of 10–20 μm by using a radio-frequency magnetron sputter apparatus. The sputter etching was also applied to AISI type 316 stainless steel at 250 W for 10.8 ks, and fi ne column-shaped protrusions with diameters smaller than 500 nm were formed. In addition, plasma-nitriding was applied to the protrusions of type 420 steel using nitrogen gas of 0.53 Pa mixed with argon gas of 0.67 Pa at a power of 50 W for 1.8 ks. The gripping ability of protrusions was measured by friction tests for three types of fiber sheets. For a cotton cloth, the friction coefficients of the as-sputter-etched and plasma-nitrided type 420 steel specimens were 1.3 and 1.7 at a nominal compressive stress of 0.8 kPa, and that of the as-sputter-etched type 316 steel specimen was 1.0. These are much larger than 0.8 and 0.5 of the specimens polished with #100 emery paper and buff -polished with alumina powders. Also for microfiber and polyester fiber sheets, the specimen with protrusions showed a higher gripping ability than those of the mechanically polished specimens. The reason for the large gripping ability of protrusion specimens is due to piercing of the protrusions between and into weaving yarns.