Observation of persistent spectral hole burning in CuBr quantum dots

Persistent spectral hole-burning phenomenon in CuBr quantum dots embedded in glass was observed. The spectral hole and the sideband holes were made together with the redshift of the absorption spectrum in proportion to the logarithm of the laser fluence and were preserved for more than 8 h at 2 K. They were erasable by the temperature rise or by the light exposure. Electron trapping at the surface of the dots and hole tunneling into traps in the glass host is the most probable origin of the persistent spectral hole-burning phenomenon in CuBr quantum dots

ホンガク トクベツ キョウカ シテイ クラブ ジョシ エキデンブ ノ ソウブ カラ 4ネンカン ノ セイカ ケンショウ チーム セイセキ ガクギョウ セイカツ トノ リョウリツ ガクナイガイ エノ コウケン ノ カンテン カラ

本学女子駅伝部は、特別強化指定クラブとして2013年４月に創部され、４年間が経過した。チーム成績は４年間右肩上がりで上昇してきたが、これからが上位の常連校に挑んでいく正念場となる。大学女子駅伝界全体が盛り上がっていくように、本学女子駅伝部としても協力的に活動していきたい。学業生活との両立という点では、語学力を伸ばしたいという本学にふさわしい人物が入部しており、在学中に留学を経験する部員も半数以上いて、就職活動も含めて、部活動と両立しながら日々奮闘している。また、私立大学としての使命を果たすという意味で、地域貢献活動の幅を広げている段階である。自分たちの活動を Facebbookで積極的に情報発信し、学内外に開かれた存在を目指している。女子駅伝部が存在することで、大学、地域、社会が少しでも元気になっていくように、そのことが学生の成長の場につながっていくように、さらに活動を発展させていきたい

ガイコクゴ ダイガク ニオケル キョウヨウ キョウイク ト シテ ノ ジュギョウ : スポーツ ケンコウ カガク ノ ヤクワリ

大学は、専門教育の提供はもちろん、卒業後に社会で活躍できる総合的な人間力を持つ社会人の卵を育成するという点においても社会的責任があると考える。 本教育研究報告の趣旨は、体育・スポーツを専門教育としない外国語大学における、教養教育としての授業「スポーツ健康科学」の実践経過を報告することである。 授業では4つの競技種目を取り上げるにあたって、どの競技種目に取り組むときも協同学習による授業展開を実践した。初対面の人と新しい人間関係を構築するには少なからぬ労力が必要だが、言葉を介した共同作業が必然的に多くなるスポーツは、そのための教材としては非常に有効であり、協同学習の手法によってそれをより効果的に実践できる可能性が示された。今後も協同学習をメインの手法としてさらなる授業改善に努め、その成果を多様な観点から明確にして発信していきたい

An electrochemical aptamer-based sensor prepared by utilizing the strong interaction between a DNA aptamer and diamond

Reproduced from Analyst., 2020, 145, 544-549 with permission from the Royal Society of Chemistry.https://doi.org/10.1039/c9an01976fStable and continuous biosensing of electroactive species in vivo has been achieved by using boron-doped diamond (BDD) electrodes owing to their outstanding electrochemical properties. However, the present problem in biosensing using BDD electrodes is how to specifically measure/detect the target molecules, including electrochemically inactive species. A possible solution is to fabricate an electrochemical aptamer-based (E-AB) sensor using a BDD electrode. In a preliminary investigation, we found that DNA aptamers strongly adsorb on the BDD surface and the aptamer-adsorbed BDD apparently worked as an E-AB sensor. The present study reports the performance of the aptamer-adsorbed BDD electrode as an E-AB sensor. Doxorubicin (DOX), a widely used chemotherapeutic, was chosen as a target molecule. The sensor could be prepared by just dipping BDD in an aptamer solution for only 30 min, and the electrochemical signals were dependent on the DOX concentration. The adsorption of DNA was strong enough for continuous measurements and even a sonication treatment. Such behaviors were not observed when using gold and glassy carbon electrodes. In a kinetic measurement, distortion by a sluggish response was observed for both association and dissociation phases, indicating that the interaction between DOX and the aptamer involves several kinetic processes. By fitting to a Langmuir isotherm, a limit of detection of 49 nM and a maximum detectable concentration of 2.3 μM were obtained. Although the sensitivity was lower than those of the well-established E-AB sensors of gold, the values are within a drug's therapeutic range. Overall, the present work demonstrates that a DNA aptamer and a BDD electrode is an effective combination for an E-AB sensor with stable sensitivity, and a wide variety of DNA aptamers can be applied without any special treatment

Diagnostic value of circulating microRNA-21 in chronic lung allograft dysfunction after bilateral cadaveric and living-donor lobar lung transplantation

Background: MicroRNAs (miRNAs) involved in the pathogenesis of pulmonary fibrosis have been shown to be associated with the development of chronic lung allograft dysfunction (CLAD) after lung transplantation (LT). We investigated the role of circulating miRNAs in the diagnosis of CLAD after bilateral LT, including cadaveric LT (CLT) and living-donor lobar LT (LDLLT). Methods: The subjects of this retrospective study were 37 recipients of bilateral CLT (n = 23) and LDLLT (n = 14), and they were divided into a non-CLAD group (n = 24) and a CLAD group (n = 13). The plasma miRNA levels of the two groups were compared, and correlations between their miRNAs levels and percent baseline forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), and total lung capacity (TLC) values were calculated from one year before to one year after the diagnosis of CLAD. Results: The plasma levels of both miR-21 and miR-155 at the time of the diagnosis of CLAD were significantly higher in the CLAD group than in the non-CLAD group (miR-21, P = 0.0013; miR155, P = 0.042). The miR-21 levels were significantly correlated with the percent baseline FEV1, FVC, and TLC value of one year before and at the time of diagnosis of CLAD (P Conclusion: Circulating miR-21 appears to be of potential value in diagnosing CLAD after bilateral LT

Movements and activities of male black-tailed gulls in breeding and sabbatical years

Long-lived animals sometimes skip one or more breeding seasons; however, little is known about their movements and activities during such ‘sabbatical’ periods. Here we present novel data on year-round movements and activities of two male black-tailed gulls Larus crassirostris during a sabbatical year. We compare the data with those in a year when they bred and with those of two other breeding males. The year-round migration routes of two sabbatical males were consistent with those of the breeding males: they returned to the breeding area but did not visit the colony in the sabbatical year. They landed more frequently on water (a potential index of foraging effort) during the non-breeding autumn and winter prior to the sabbatical year than before breeding. Sabbatical gulls may forage more intensively to recover body condition immediately after breeding