A remark on non-commutative LpL^p-spaces

We describe the Haagerup and the Kosaki non-commutative $L^p$-spaces associated with a tensor product von Neumann algebra $M_1\bar{\otimes}M_2$ in terms of those associated with $M_i$. The descriptions are then shown to be useful in the quantum information theory based on operator algebras.Comment: Comments welcom

Resonant Control of Interaction Between Different Electronic States

We observe a magnetic Feshbach resonance in a collision between the ground and metastable states of two-electron atoms of ytterbium (Yb). We measure the on-site interaction of doubly-occupied sites of an atomic Mott insulator state in a three-dimensional optical lattice as a collisional frequency shift in a high-resolution laser spectroscopy. The observed spectra are well fitted by a simple theoretical formula, in which two particles with an s-wave contact interaction are confined in a harmonic trap. This analysis reveals a wide variation of the interaction with a resonance behavior around a magnetic field of about 1.1 Gauss for the energetically lowest magnetic sublevel of ${}^{170}$Yb, as well as around 360 mG for the energetically highest magnetic sublevel of ${}^{174}$Yb. The observed Feshbach resonance can only be induced by an anisotropic inter-atomic interaction. This novel scheme will open the door to a variety of study using two-electron atoms with tunable interaction.Comment: 5 pages, 5 figure

The TIMI Study Group's Contributions to the Advancement of Cardiology --With Focus on Atherosclerotic Cardiovascular Disease--

Atherosclerotic cardiovascular disease (ASCVD) is the leading cause of morbidity and mortality across the world, warranting continuous research in this field. The elucidation of the atherogenesis mechanism is considered one of the most relevant scientific accomplishments of the last century. This has led to the clinical development of various novel therapeutic interventions for patients with or at risk of ASCVD, in which randomized clinical trials played a crucial role.The Thrombolysis in Myocardial Infarction (TIMI) Study Group was initially established to conduct a clinical trial studying thrombolysis for treatment of myocardial infarction. owever, over the years, the TIMI Study Group has expanded their research interests to include antithrombotic therapy, lipid lowering, anti-diabetes, anti-obesity, and even heart failure. By leading large-scale, international, randomized, controlled trials of novel therapeutics, the TIMI Study Group has helped shape the very practice of cardiovascular medicine for over a quarter of a century, and decades of research continue to provide future promise for further advancement. Through a mutual goal to improve the care of ASCVD patients, the Japanese scientific community has become one of the important contributors to the TIMI Study Group’s clinical research.In this review article, the authors aim to summarize major research lead by the TIMI Study Group in the ASCVD field

MRI and CT features of a malignant myoepithelioma of the scrotum : A case report and literature review

Malignant myoepithelioma of the scrotum is extremely rare. We report the case of a 51-year-old man with malignant myoepithelioma of the scrotum, wherein computed tomography and magnetic resonance imaging revealed a lobulated soft tissue mass with calcification, cystic component, and solid component with gradual contrast enhancement on dynamic contrast-enhanced scans. The patient presented with scrotal induration, and there was no elevation of tumor markers and no evidence of a metastatic lesion on computed tomography and magnetic resonance imaging. Histopathological examination of the resected scrotal specimen confirmed a well-circumscribed solid tumor with septa, a small area of hemorrhage, and necrosis. The subsequent diagnosis was malignant myoepithelioma of the scrotum. This case shows that scrotal malignant myoepithelioma might appear as a well-defined lobulated mass with cystic regions. We conjecture that the enhancement pattern and apparent diffusion coefficient values can be potential markers for scrotal myoepithelial tumors

Particle size and surface texturing effects on friction of magnetorheological fluids

MR fluids are produced by dispersing micron-sized ferrimagnetic particles in oil. Generally, the presence of foreign particles in a lubricant affects the sliding behavior of the lubricated surface. Accordingly, the dispersed particles in MR fluids should significantly affect the lubrication properties of the fluids. In this study, we investigated the lubrication properties of MR fluids through sliding tests and in situ observations, while focusing on the behavior of the dispersed particles. MR fluids containing dispersed particles of various diameters were tested. The results of the sliding tests suggested that the MR fluid with the smallest particles exhibited the best lubrication characteristics. Surface observations showed the presence of grooves on the lubricated surfaces after wear. It is assumed that the grooves are formed by the abrasive action of the dispersed particles and that they affect the behavior of the particles. In situ observations proved that, in the case of flat surfaces, the dispersed particles remained stationary during sliding. On the other hand, in case of grooved surfaces, they moved along the grooves. Given these results, it can be surmised that the grooves on the worn surface changed the behavior of the particles and improved the lubricity of MR fluids

<ORGINAL ARTICLE>Evaluation of the Relationship between a Face Anxiety Scale and the State-Trait Anxiety Inventory

我々は簡単に短時間で患者の不安の程度を把握するために,我々が考案した顔不安スケール(Face Anxirty Scale FAS)を臨床で使用している。今回の研究はこのFASが不安をアセスメントする心理テスト,すなわちState-traitanxiety inventry (STAI)の得点に相関するのか検討した。FASとSTAIは歯科診療(口腔外科処置)前に待合室で実施し,患者自身に記入させた。尚,対象から対人恐怖症および自律神経失調症の患者は除外した。その結果,対象は33名(女性14名,男性19名),平均年齢は24.4才(19才から49才)。対象患者の多くは智歯の抜歯手術だった。歯科に関する既往歴は永久歯の抜歯経験が無い患者から歯科診療恐怖症の患者,精神鎮静法下に難抜歯の経験有る患者など,いろいろであった。今回は対象患者の約半数に対して,静脈内鎮静法(フルニトラゼパム投与)を施行した。特性不安はFASが0から2点,0.80±0 53(mean±S.D)であった。STAKA-trait)は32から64,43.46±8.29(mean±S.D.)となった。FASとSTAI(A-trait)の相関関係はFig2に示したように,Y=41.38+2.98X,R^2=0.04であった。歯科診療前の状態不安はFASが0から4点,平均1.94±1.35(mean±S.D )であった。STAI(A-state)は23から72,47.46±13.92(maen±S.D.)となった。FASとSTAI(A-trait)の相関関係はFig3に示したように,Y=30.22+8.87X,R^2=0.69(P <0.01)であった。以上の結果から,FASとSTAIの状態不安尺度は相関を認めた。従って,FASは歯科患者の状態不安を客観的,簡便に評価する事が認められた。また,我々が考案したFASは歯科治療に対する患者の不安評価方法として,有用性が示唆された。To determine the degree of fear of dental treatment in general, we applied a Face Anxiety Scale (FAS) for pre-operative levels of anxiousness. The FAS is valuable as it is easy and fast. The FAS assess anxiety at 6 levels, the lowest is 0, the highest 5. We assessed the pre-operative (minor dental surgery) anxiety of patients subject to intravenous sedeation, without psychosedation. To establish the reliability of the FAS, an evaluation of the relationship between the FAS and the State-trait anxiety inventory (STAI) was made. The pre-operative FAS ranged from 4 to 0 Anxiety with STAI (A-state) had a highest score of 72, and a lowest score of 23 The relationship between FAS and anxiety state with STAI was Y=30.22+8.87X,R^2=0.69(P<0 01). The FAS was significant correlated with state anxiety of STAI. The results suggest that FAS is a reliable measure for state anxiety in dental treatment

Local well-posedness of a system describing laser-plasma interactions

A degenerate Zakharov system arises as a model for the description of laser-plasma interactions. It is a coupled system of a Schr\"odinger and a wave equation with a non-dispersive direction. In this paper, a new local well-posedness result for rough initial data is established. The proof is based on an efficient use of local smoothing and maximal function norms.Comment: supersedes arXiv:2103.0534