2,363 research outputs found
Tephra stratigraphy, facies and grain compositions of the Shinanomachi Loam Formation distributed around Lake Nojiri-ko
No full textThe Shinanomachi Loam Formation is composed of tephric loess, volcanic ashes, pumice and scoria lapllius, is overlain by the Kamiyama Loam Formation and Nojiri Loam Formation. At two well exposures at approximately 4 km south and 5 km north-east of Lake Nojiri-ko, we described litho-facies and grain compositions. Based on these litho-facies and grain compositions, and stratigraphic relationship, we are revealed that some tephra bed in the Shinanomachi Loam Formation is correlated to “Iz-KT a”, “Iz-KT c” and “In-Ny” wide-spread tephras.Article野尻湖ナウマンゾウ博物館研究報告. 27: 15-26(2019)journal articl
A hospital-acquired outbreak of methicillin-resistant Staphylococcus aureus infection initiated by a surgeon carrier.
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Panhypo-Pituitarism Caused by Solitary Parasellar Metastasis from Lung Cancer: A Case Report
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[[alternative]]The KT transition of YBCO films
No full text[[abstract]]我們想藉由觀察 YBaCuO 薄膜是否有 KT 變遷的現象,來瞭解薄膜厚度與
維度的關係。故我們製作二塊不同厚度 (240o,120o) 的薄膜,分別量測它
們的電阻率與 V-I 曲線, 並加以分析。其中240o 之 YBCO 薄膜由於厚度
較大,無法表現二維的行為。而120o 的薄膜其 V-I 曲線相關的次方定律
V=I,在 T<76.6K 時, n 滿足二維 Ginzberg- Landau 之線性關係式: n(
T)≒1+const(1-T/Tco)。以此直線與 n=1 之交點定出樣品的 T=79K。而
在n(T)約為5.1時, n 不再隨上述的線性關係式隨溫度下降,亦即發生了
KT 變遷中普遍躍遷的現象。我們分別以 n=3及 n=5.1 定出兩種不同的
Tkt, 來討論電阻率的結果。由電阻率的結果分析,無論那種決定 Tkt 的
方法在介於78.1及78.6K 間,其ln(R/Rn)與[(Tco-T)/(T-Tkt)]成線性關係
。亦就是出現 KT 理論中預測因二維渦流運動產生的特殊行為。所以其具
有二維的傳導現象。
In order to know the dimensionalities of YBCO films, we
measured the resistivities and I-V curves of two YBCO films(120
o,240o). According to our results,the film of 240o thickness
couldn't show the 2d behaviors.The power law of 120o film has
the universal jump phenomena and the resisti- vity behavior can
be explained by 2d free vortices mo- tion.We can say that the
YBCO film of 120o thickness is a 2d system.
In order to know the dimensionalities of YBCO films, we
O‘PKA KT (KOMPYUTER TOMOGRAFIYASI) TASVIRLARIDA SUN’IY INTELLEKT ASOSIDA SEGMENTATSIYA ALGORITMLARINI ISHLAB CHIQISH
No full textUshbu maqolada O‘pka kompyuter tomografiyasi (KT) tasvirlarida sun’iy intellekt texnologiyalari asosidagi segmentatsiya algoritmini ishlab chiqarishni ishlab chiqish masalasini ko\u27rib chiqamiz. O‘pka to‘g’irlash chegaralarini aniqlashtirish, Patologik o‘zgarishlarni erta bosqichda aniqlash va diagnostika jarayonini aniqligini oshirish. Maqolada chuqur o‘rganish (Deep Learning) usullaridan biri - U-Net konvolyutsion neyron manbasi asosida ishlab chiqarilgan va o\u27qitilgan. Maqolada LIDC-IDRI ochiq ma’lumotlar to‘plamiga KT tasvirlaridan foydalanildi. Modellashtirish IoU (Intersection over Union) va Dice koeffitsienti mezonlari yordamida baholandi. Natijalar ko‘rsatgichlari, taklif qilingan model O‘pka to‘qimasi segmentatsiyasini yuqori aniqlik bilan va kasallik o‘choqlarini avtomatik aniqlash jarayonini soddalashtirish va tibbiy tasvirlarni tahlil qilishda inson omillarini hamda klinik diagnostika tizimlarida amaliy qo‘llab-quvvatlash mumkin
Numerical analysis and discussion on the hot-spot stress concept applied to welded tubular KT joints
No full textNominal stresses have been used for a long time for the assessment of fatigue resistance of welded joints, however, this approach has strong limitations since the definition of the nominal stress may be subjective for complex welded details and/or complex loading. On the other hand, the hot-spot stress approach has been proposed to overcome these limitations considering the structural geometrical discontinuities. However, the hot-spot stress methods also present certain limitations, and the present study aims at evaluating the available numerical and analytical hot-spot stress methods proposed by DNVGL (2016) and IIW (2014). The particular case of an offshore tubular KT joint has been considered herein and discretized in two planes. It has been studied numerically using the ABAQUS software coupled with the hot-spot stress extrapolation methods described in IIW (2014) and DNVGL (2016). The influence of the weld geometry has been considered and evaluated. In addition to the numerical method, the present study has also considered the analytical approach proposed in DNVGL (2016) derived from the combination of Efthymiou solutions for the stress concentration factor with the method of superposition of stresses. The numerical models according to IIW (2014) have been found to be more conservative when compared with the mesh-size methods proposed by DNVGL (2016), both in numerical modelling without the weld or with weld. For the numerical models with weld cord, the mean values of normalized difference index obtained for all braces together, as a result of comparing numerical results with analytical solutions, are lower, when compared with results obtained from the numerical models without weld cord.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Steel & Composite Structure
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