Pergamon-Elsevier Science Acta Medica Okayama 0277-5387 171 2019 Homodinuclear lanthanoid(III) dithiocarbamato complexes bridged by 2,2′-bipyrimidine: Syntheses, structures and spectroscopic properties 515 522 EN Abdallah Yakubu Graduate School of Natural Science and Technology, Okayama University Takayoshi Suzuki Research Institute for Interdisciplinary Science, Okayama University Masakazu Kita Faculty of Education, Okayama University Four new homodinuclear lanthanoid(III) dithiocarbamato (RR'dtc(-)) complexes bridged by 2,2'-bipyrimidine (bpm) of the form [{Ln(RR'dtc)(3)}(2)(mu-bpm)] {Ln = Nd or Eu; RR' = dimethyl- (Me-2) or pyrrolidine(pyr)} were prepared and their crystal structures and spectroscopic properties were characterized. The crystallographic studies revealed that all of the complexes possess a similar structural motif with an 8:8-coordination geometry, in which the bpm ligand bridges two Ln(III) centers in the kappa N-2(1,1') : kappa N-2(3,3') mode and three RR'dtc(-) ligands coordinate to each Ln(III) center. The complexes exhibit weak but relatively sharp f-f transition bands in the absorption and magnetic circular dichroism (MCD) spectra recorded in the visible region. The MCD spectral studies demonstrated the magneto-optical behavior of the complexes. The spectral features of the dithiocarbamato complexes were distinctly different from those of their beta-diketonato analogues, suggesting the coordination environment around the Ln(III) center influences the electronic structure and spectroscopic symmetry of the complexes in solution. No potential conflict of interest relevant to this article was reported.

Elsevier Acta Medica Okayama 00201693 498 2019 Dinuclear lanthanoid(III) dithiocarbamato complexes bridged by (E)-N-benzylidenepicolinohydrazonate: Syntheses, crystal structures and spectroscopic properties 119124 EN Abdallah Yakubu Graduate School of Natural Science and Technology, Okayama University Takayoshi Suzuki Research Institute for Interdisciplinary Science, Okayama University Masakazu Kita Faculty of Education, Okayama University (E)-N-Benzylidenepicolinohydrazide (Hbphz) was used to synthesize a series of hydrazonato-bridged homodinuclear Ln(2)(III) dithiocarbamato (RR'dtc(-)) complexes of the form [{Ln(RR' dtc)(2)}(2)(mu-bphz)(2)] {Ln= La, Pr, Nd, Sm or Eu; RR'= dimethyl-(Me-2) or pyrrolidine-(pyr)}. X-ray crystallographic studies revealed that these complexes possessed a common head-to-tail type dinuclear structural motif in which two hydrazonato ligands bridged two Ln(III) centers in the mu- 1 kappa N-2(py),O:2 kappa O-2,N(imine) mode and two RR'dtc ligands coordinated to each Ln(III) center. Interestingly, while the Sm-III and Eu-III complexes crystallized as simple 8:8-coordinate dinuclear molecules, the lighter Ln(III) (i.e. La-III, Pr-III and Nd-III) complexes afforded in some cases 9:9-coordinate molecules, where the ninth coordination site was occupied by a solvent ethanol or methanol molecule. Even for the lighter Ln(III) complexes, the complexes were solved in dichloromethane or chloroform as the 8:8-coordinate dimer, as revealed by H-1 NMR spectroscopy. In the UV-visible absorption and magnetic circular dichroism (MCD) spectra of the complexes, similar spectral patterns for ligand-centered and Laporte forbidden f-f transitions were observed. The MCD spectral studies demonstrated the characteristic magneto-optical behavior of the complexes. No potential conflict of interest relevant to this article was reported.

Elsevier Science Acta Medica Okayama 00201693 484 2018 Syntheses and crystal structures of neodymium(III) and europium(III) complexes bearing dimethyl-, pyrrolidine-, or S-prolinol- dithiocarbamato ligands and their natural and magnetic circular dichroism spectra 394 401 EN Abdallah Yakubu Graduate School of Natural Science and Technology, Okayama University Takayoshi Suzuki Graduate School of Natural Science and Technology, Okayama University Masakazu Kita Faculty of Education, Okayama University A series of Nd-III and Eu-III complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)(3)(NN)] {Ln = Nd or Eu; X = dimethyl- (Me-2), pyrrolidine- (pyr), or (S)-prolinol- (S-proOH); NN = 1,10-phenanthroline (phen) or 2,2'-bipyridine (bpy)}, were prepared and their crystal structures and spectroscopic properties, in particular the natural circular dichroism (CD) and magnetic circular dichroism (MCD), were investigated. The crystal structures of the complexes analyzed by the X-ray diffraction method showed an 8-coordinate geometry around the Ln III center with comparable structural parameters to one another and to the related complexes reported previously. These complexes exhibited similar spectral patterns in their absorption, natural CD and MCD spectra in solution. Weak but characteristic sharp f-f transition bands were observed in the absorption and MCD spectra, but no CD signals associated with these transitions were observed even in the S-proOHdtc complexes. The MCD spectral pattern of the Eu-III complexes revealed a local C-2v symmetry around the Ln(III) center in solution, in contrast to the aqua and the analogous beta-diketonato Eu-III complexes. No potential conflict of interest relevant to this article was reported.

兵庫教育大学大学院連合学校教育学研究科 Acta Medica Okayama 2433-1791 19 2018 長光路セルとしてプラスチックパイプを用いた水の色に関する教材開発－小学校理科における活用－ 191 196 EN Yui MIYAZAKI Tsubasa AJIMI Masakazu KITA 　Water is an essential substance for living things. Topic on water are at grades 3-6 in elementary science. The roles and functions of water (erosion, accumulation, transportation), germination and growth of plants, etc. On the other hand, the properties of water are not treated except physical change like boiling, evaporation, freezing, etc.<br/> 　The color, taste, and smell of water are not discussed in elementary science. This research proposes that the color of water because an excellent theme for inquire based leaning. We have developed a suitable and low cost teaching material for the water color. Furthermore, we have conducted a few lessons with the teaching materials to examine the appropriateness. No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 9 1 2009 理科教材･授業案開発を指向した新しい学部講義の実践 97 102 EN Yoshihiko Inada Izumi Irie Kozo Atobe Motonori Ando Teruhiko Ishikawa Koji Uno Hisakazu Ogura Seiji Kakihara Kuranoshin Kato Masakazu Kita Kenji Tanaka 10.18926/15108 岡山大学教育学部の理科教育講座に所属する3年生を対象に,理科教材･授業案開発を指向した新しい講義を始めたのでその報告を行う｡本講義では,近隣の小,中学校や公民館,科学館等の協力も得て実践の場を確保し,開発した教材や授業案を実践することで生きた教材開発の訓練を行なうことを目指している｡教科内容学担当教員と教科教育学担当教員の協働を模索すると同時に,大学教員の教科内容の専門知識や技量を教材や授業案に有効に活用できる講義を意識した。 No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 7 1 2007 科学的な見方や考え方を育てる指導の工夫―小学校理科における「エネルギー変換」の教材としての可能性― 9 19 EN Yoshiaki Takahara Yohei Watanabe Yuko Horinouchi Wan Xu Jin Chang shan Jin Yuki Kawata Tsutomu Yoshioka Motoshi Hirayama Yoshihiko Inada Seiji Kakihara Masakazu Kita 10.18926/14369 小学校中学年B区分の学習内容を相互に関連付けて考えるための視点として「エネルギー変換」を取り上げ、これをキーワードにした教材開発と授業設計を行った。岡山大学教育学部附属小学校の第4学年の児童を対象に研究授業を行い、児童の変容を学習の記録や授業前後のコンセプトマップの記述をもとに分析した。その結果、児童の中には、既習事項である「光」「熱」「電気」「力」とそれらがもたらす現象とを、相互に関連付けて考えようとする反応が見られるようになった。 No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 7 1 2007 岡山大学大学院理科教育専攻で行った教材・授業案開発講義の試み 1 7 EN Yoshihiko Inada Seiji Kakihara Masakazu Kita Nobuhiko Yamashita Teruhiko Ishikawa Hisakazu Ogura Motonori Ando Isao Kusachi Kuranoshin Kato Tsutomu Yoshioka Yuki Kawata Motoshi Hirakawa Seiji Hashimoto Tetsuya Akazaki Nobuhiko Higashi Akio Becchaku 10.18926/14367 岡山大学大学院教育学研究科の理科教育専攻の講義として、教材開発・授業案開発をテーマとした新しい講義を試みたのでその報告を行う。本講義は、理科教育講座に所属する大学院生、理科教育講座の大学教員、附属学校の理科関係の教諭が三者協働で進めることが特徴である。課題設定、教材開発を含めた実践準備および実践を院生チームを組み遂行させ、さらに経験や専門性の異なる人材と論議を重ねて活動を進めることを通じ、将来、協働で学校現場の課題提案・解決を行うことのできる能力を養うことを目標とした。 No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 6 1 2006 高校化学における粒子概念の理解度に関する調査研究 33 38 EN Masakazu Kita Toshio Watanabe Onwu Gilbert 10.18926/14353 中学校理科、並びに高校化学における基礎概念の物質の粒子概念や原子・分子の粒子としての表現についてある普通科高校の高校生1年から3年までの全クラスの生徒997名対象に、イメージ図を用いて理解度を測定する目的で調査を行い、イメージとして物質の粒子概念が高校生にどうとらえられているかを明らかにした。この結果より全般的に基礎知識の理解とその応用について不十分であることがわかった。また、全学年で化学変化と物理変化の違いについてイメージができておらず、化学の本質の理解の点で問題点があることがわかった。 No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 6 1 2006 A research on students knowledge, awareness and interest about environmental issues ; a case study at a high school in Japan 21 32 EN Julius Kofi Agubeko Etsuyo Nasu Tomomi Kasai Toshio Watanebe Kazuko Edagawa Masakazu Kita 10.18926/14352 Education for Sustainable Development(ESD)-Environmental Education, has been a major concern at most UN summits. The 2002 Johannesburg Summit broadened the vision and re-affirmed the objective of the Millennium evelopment Goals (MDS) and proclaimed the Decade of Education for Sustainable Development for the period 2005-2014. This emphasized that education, is critical for promoting sustainable development and improving capacity of the people to address environment and development issues. This paper seeks to report, a finding on the level of student awareness and interests in environmental issues at a High School in Japan (a Super Science High School). A curricula unit was developed in the area of environmental education on soil. An actual chemistry class has been conducted in English. Pre & post lesson questionnaires were administered to the students. The result of the analysis indicates that, students are aware of environmental issues but need to be exposed to these issues in the form of activity-based classroom lessons. This we believe, will enable the students appreciate the fact that ESD is a life-wide and lifelong endeavor which challenges individuals, institutions and societies to view tomorrow as a day that belongs to all of us. This we presume is the main challenge of the MDS. No potential conflict of interest relevant to this article was reported.

岡山大学教育学部附属教育実践総合センター Acta Medica Okayama 1346-3705 6 1 2006 The Development of Chemical Teaching Materials for Upper Secondary School : study lesson on detergent concept in Cambodia 11 20 EN Seng Set Mie Miyoshi Masakazu Kita 10.18926/14350 A study lesson dealing with the detergent concept was carried out at an upper secondary school in Cambodia after a number of teaching materials concerning with detergent were prepared for classroom activities. Through the pre-/post tests and questionnaires responded by students, the lesson study was evluated high appreciation and satisfactory. The activities prepared in the lesson study were applicable by students. It is also recommended that it can be appropriately introduced as part of curriculum at upper secondary schools in Cambodia and other developing countries which required teaching materials. No potential conflict of interest relevant to this article was reported.