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Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon.

Physical review letters

Akhtar W, Filidou V, Sekiguchi T, Kawakami E, Itahashi T, Vlasenko L, Morton JJ, Itoh KM.
PMID: 22463668
Phys Rev Lett. 2012 Mar 02;108(9):097601. doi: 10.1103/PhysRevLett.108.097601. Epub 2012 Feb 27.

Pulsed electron paramagnetic resonance spectroscopy of the photoexcited, metastable triplet state of the oxygen-vacancy center in silicon reveals that the lifetime of the m(s)=±1 sublevels differs significantly from that of the m(s)=0 state. We exploit this significant difference in...

From a Si3-Cyclopropene to a Si3S-Bicyclo[1.1.0]butane to a Si3S-Cyclopropene to a Si3S2-Bicyclo[1.1.0]butane: Back-and-Forth, and In-Between.

Angewandte Chemie (International ed. in English)

Lee VY, Gapurenko OA, Miyazaki S, Sekiguchi A, Minyaev RM, Minkin VI, Gornitzka H.
PMID: 26403356
Angew Chem Int Ed Engl. 2015 Nov 16;54(47):14118-22. doi: 10.1002/anie.201506625. Epub 2015 Sep 25.

Compact and highly reactive bicyclo[1.1.0]butanes constitute one of the most fascinating classes of organic compounds. Furthermore, interplay of bicyclo[1.1.0]butanes with their valence isomers, such as buta-1,3-dienes and cyclobutenes, is among the fundamental pericyclic transformations in organic chemistry. Herein we...

A protocol for searching the most probable phase-retrieved maps in coherent X-ray diffraction imaging by exploiting the relationship between convergence of the retrieved phase and success of calculation.

Journal of synchrotron radiation

Sekiguchi Y, Hashimoto S, Kobayashi A, Oroguchi T, Nakasako M.
PMID: 28862626
J Synchrotron Radiat. 2017 Sep 01;24:1024-1038. doi: 10.1107/S1600577517008396. Epub 2017 Aug 01.

Coherent X-ray diffraction imaging (CXDI) is a technique for visualizing the structures of non-crystalline particles with size in the submicrometer to micrometer range in material sciences and biology. In the structural analysis of CXDI, the electron density map of...


Journal of the American Chemical Society

Lee VY, Ota K, Ito Y, Gapurenko OA, Sekiguchi A, Minyaev RM, Minkin VI, Gornitzka H.
PMID: 28892377
J Am Chem Soc. 2017 Oct 04;139(39):13897-13902. doi: 10.1021/jacs.7b07712. Epub 2017 Sep 22.

Strained hydrocarbons constitute one of the most prominent classes of organic compounds. Among them, bicyclo[2.1.0]pentene ("housene") derivatives represent a highly challenging and very attractive class. Although organic housenes have been known for more than five decades, there are still...

Comparison of the relationship between multiple parameters of glycemic variability and coronary plaque vulnerability assessed by virtual histology-intravascular ultrasound.

Journal of diabetes investigation

Otowa-Suematsu N, Sakaguchi K, Komada H, Nakamura T, Sou A, Hirota Y, Kuroda M, Shinke T, Hirata KI, Ogawa W.
PMID: 28921914
J Diabetes Investig. 2017 Sep 16; doi: 10.1111/jdi.12750. Epub 2017 Sep 16.

AIMS/INTRODUCTION: Increased glycemic variability is an important contributing factor to coronary artery disease. Although various parameters of glycemic variability can be derived by continuous glucose monitoring, the clinical relevance of individual parameters has remained unclear. We have now analyzed...

Alternative translational initiation of ATP sulfurylase underlying dual localization of sulfate assimilation pathways in plastids and cytosol in Arabidopsis thaliana.

Frontiers in plant science

Bohrer AS, Yoshimoto N, Sekiguchi A, Rykulski N, Saito K, Takahashi H.
PMID: 25601874
Front Plant Sci. 2015 Jan 05;5:750. doi: 10.3389/fpls.2014.00750. eCollection 2014.

Plants assimilate inorganic sulfate into sulfur-containing vital metabolites. ATP sulfurylase (ATPS) is the enzyme catalyzing the key entry step of the sulfate assimilation pathway in both plastids and cytosol in plants. Arabidopsis thaliana has four ATPS genes (ATPS1, -2,...

Controlled attenuation parameter is correlated with actual hepatic fat content in patients with non-alcoholic fatty liver disease with none-to-mild obesity and liver fibrosis.

Hepatology research : the official journal of the Japan Society of Hepatology

Fujimori N, Tanaka N, Shibata S, Sano K, Yamazaki T, Sekiguchi T, Kitabatake H, Ichikawa Y, Kimura T, Komatsu M, Umemura T, Matsumoto A, Tanaka E.
PMID: 27183219
Hepatol Res. 2016 Sep;46(10):1019-27. doi: 10.1111/hepr.12649. Epub 2016 Mar 15.

AIM: Non-invasive steatosis-quantifying methods are required for non-alcoholic fatty liver disease (NAFLD) patients in order to monitor disease severity and assess therapeutic efficacy. Controlled attenuation parameter (CAP) evaluated with vibration-controlled transient elastography can predict the presence of steatosis, but...

A phenomenological model for selective growth of semiconducting single-walled carbon nanotubes based on catalyst deactivation.


Sakurai S, Yamada M, Sakurai H, Sekiguchi A, Futaba DN, Hata K.
PMID: 26660858
Nanoscale. 2016 Jan 14;8(2):1015-23. doi: 10.1039/c5nr05673j.

A method for the selective semiconducting single-walled carbon nanotube (SWCNT) growth over a continuous range from 67% to 98%, within the diameter range of 0.8-1.2 nm, by the use of a "catalyst conditioning process" prior to growth is reported....

Molecular devices for high fidelity of DNA replication and gene expression.

Proceedings of the Japan Academy. Series B, Physical and biological sciences

Sekiguchi M.
PMID: 25792791
Proc Jpn Acad Ser B Phys Biol Sci. 2006 Dec;82(8):278-96. doi: 10.2183/pjab.82.278. Epub 2006 Dec 02.

Certain types of DNA lesions, produced through cellular metabolic processes and also by external environmental stresses, are responsible for the induction of mutations as well as of cancer. Most of these lesions can be eliminated by DNA repair enzymes,...

Successful Salvage Chemotherapy with Streptozocin in a Patient with Mediastinal Atypical Carcinoid Tumor Who Had Relapsed after Various Prior Therapies.

Case reports in oncology

Fukushima T, Gomi D, Seno N, Gibo T, Kobayashi T, Sekiguchi N, Matsushita H, Kasahara Y, Mamiya K, Koizumi T.
PMID: 29515410
Case Rep Oncol. 2018 Jan 19;11(1):49-54. doi: 10.1159/000477163. eCollection 2018.

Pulmonary neuroendocrine tumors are rare, and there have been very few reports regarding optimal chemotherapeutic regimens. Two molecular targeted agents, everolimus and sunitinib, have recently been shown to provide an additional treatment benefit for pulmonary neuroendocrine tumors. However, little...

Effect of ultrasonic frequency on size distributions of nanosized mist generated by ultrasonic atomization.

Ultrasonics sonochemistry

Kudo T, Sekiguchi K, Sankoda K, Namiki N, Nii S.
PMID: 28427620
Ultrason Sonochem. 2017 Jul;37:16-22. doi: 10.1016/j.ultsonch.2016.12.019. Epub 2016 Dec 21.

Ultrasonic atomization is used to produce fine liquid mists with diameter ranges below 100nm. We investigated the effect of the frequency on the size distribution of ultrasonic mist. A bimodal distribution was obtained for the mist generated by ultrasonic...

Draft Genome Sequence of Bacteroidales Strain TBC1, a Novel Isolate from a Methanogenic Wastewater Treatment System.

Genome announcements

Tourlousse DM, Matsuura N, Sun L, Toyonaga M, Kuroda K, Ohashi A, Cruz R, Yamaguchi T, Sekiguchi Y.
PMID: 26450737
Genome Announc. 2015 Oct 08;3(5). doi: 10.1128/genomeA.01168-15.

We report here the draft genome sequence of Bacteroidales strain TBC1, isolated from a methanogenic wastewater treatment system. The draft genome has a size of 4,514,407 bp and a G+C content of 46.7%. The predicted genomic content provides the...

Showing 1 to 12 of 1097 entries