958 research outputs found
Partial Tracheal Defects Closure using Glutaraldehyde-Treated Autologous Pericardium
No full text博士論文 要旨Abstract/本文Full 以下に掲載：The Thoracic and Cardiovascular Surgeon 71(6) pp.490-496 2023. Thieme. 共著者：Yoshida Shuhei, Matsumoto Isao, Saito Daisuke, Tanaka Yusuke, Takemura Hirofumi, Oi Akish
Partial Tracheal Defects Closure using Glutaraldehyde-Treated Autologous Pericardium
No full text金沢大学博士(医学）博士論文 要旨Abstract/本文Full 以下に掲載：The Thoracic and Cardiovascular Surgeon 71(6) pp.490-496 2023. Thieme. 共著者：Yoshida Shuhei, Matsumoto Isao, Saito Daisuke, Tanaka Yusuke, Takemura Hirofumi, Oi Akishidoctoral thesi
Impact parameter selective Rydberg atom collision by optical tweezers
No full textOptical tweezers are used to facilitate cold collisions between two Rydberg rubidium atoms (87Rb) by controlling the impact parameter and collision energy. One atom is held stationary while the other is propelled to a constant velocity. After the tweezers are deactivated, both atoms are excited to a Rydberg state using a pi-pulse. Following the collision, a second pi-pulse is applied. If the stationary atom undergoes minimal momentum transfer and returns to its ground state, it can be recaptured when the tweezer is reactivated. The collision probability as a function of the impact parameter is extracted from the atom loss in the tweezer and used to determine the collisional cross section between Rydberg atoms. Numerical simulations of elastic two-body collisions agree well with the experimental data, providing valuable insights into the parameter regime where quantum effects will become important.
Ritual space : an architecture of connection and orientation
No full textIncludes abstract.Includes bibliographical references
Quantum Behavior of a Heavy Impurity Strongly Coupled to a Bose Gas
No full textWe investigate the problem of an infinitely heavy impurity interacting with a dilute Bose gas at zero temperature. When the impurity-boson interactions are short-ranged, we show that boson-boson interactions induce a quantum blockade effect, where a single boson can effectively block or screen the impurity potential. Since this behavior depends on the quantum granular nature of the Bose gas, it cannot be captured within a standard classical-field description. Using a combination of exact quantum Monte Carlo methods and a truncated basis approach, we show how the quantum correlations between bosons lead to universal few-body bound states and a logarithmically slow dependence of the polaron ground-state energy on the boson-boson scattering length. Moreover, we expose the link between the polaron energy and the spatial structure of the quantum correlations, spanning the infrared to ultraviolet physics
Dynamics of interacting Rydberg atoms
No full textDie Arbeit befasst sich mit der Dekohärenz wechselwirkender Rydberg-Atome in Gasen. Typischerweise werden ultakalte Atome mit niedriger Dichte erzeugt sodass Atome kaum mit einander wechselwirken.Die Anregung elektronischer Wellenfunktionen 'vergrößert' jedes Atom und die effektive Dichte des Gases wird größer. Die Stärke der Wechselwirkung ist steuerbar durch die Quantenzahl n der Rydberg-zustände. Obwohl die Methoden zur Kontrolle und Manipulation eines isolierten Atoms intensiv erforscht sind und sich entsprechende Methoden entwickelt haben, ist die Frage ob diese auf Mehr-Atom Systeme erweiterbar sind noch unbeantwortet. Die Dekohärenzzeit weist darauf hin wie schnell die Effekte der Wechselwirkung im System einsetzen. Diese Zeit ist ein notwendige Information um die Kontrollmethoden zu entwickeln. Diese zwei Aspekte, Erweiterung von Sekulären-Methoden bei Einzelatomen und die Dekohärenzzeit, wurden in dieser Arbeit für ein System bestehend aus ZWEI Atomen intensiv behandelt.The work is about the dephasing-rates of Rydberg-atoms in gases.Usually ultra-cold Atoms are generated with low densities where they interact weakly. The excitation of the electronical degrees of freedom allows to control the interaction as by increasing the principal quantum number the interaction-strength grows with the order of four. Although intensive studies and progres has been made for single atomic cases, a lack of research for few-body systems can be stated. The decoherence time is a indispensible information in terms of the control and effects of Rydberg-Atoms. In this work these two topics were treated for a TWO-body System
Vitamin B2 lung-marking method using black light irradiation
No full text金沢大学博士（医学）博士論文 要旨Abstract/本文Full 以下に掲載：Journal of Thoracic Disease 12(3) pp.651-658 2020. AME Publishing Company. 共著者：Yusuke Tanaka, Isao Matsumoto, Munehisa Takata, Shuhei Yoshida, Masaya Tamura, Wataru Koda, Hirofumi Takemuradoctoral thesi
Vitamin B2 lung-marking method using black light irradiation
No full text博士論文 要旨Abstract/本文Full 以下に掲載：Journal of Thoracic Disease 12(3) pp.651-658 2020. AME Publishing Company. 共著者：Yusuke Tanaka, Isao Matsumoto, Munehisa Takata, Shuhei Yoshida, Masaya Tamura, Wataru Koda, Hirofumi Takemur
A method to identify pulmonary intersegmental planes with intravenous vitamin B2 injection
No full text博士論文 要旨Abstract/本文Full 以下に掲載：Surgery Today 51(5) pp.836-843 2021. Japan Surgical Society. 共著者：Daisuke Saito, Isao Matsumoto, Ryuichi Waseda, Keisuke Tatemichi, Yusuke Tanaka, Shuhei Yoshida, Munehisa Takata, Masaya Tamura, Hirofumi Takemur
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