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RISS 인기검색어
- 검색키워드
- 저자 : Ishida, Hiroyuki (검색결과 369 건)
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Ishida, Kazuko,Ishida, Junko,Kiyoko, Kanda Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.3
This study aims to clarify the psychosocial reactions of female patients with gynecological cancer undergoing chemotherapy and in the process of suffering from alopecia and to examine their nursing support. The target group comprised female patients who had received two or more cycles of chemotherapy, were suffering from alopecia, and were aged 30-65. Data were collected from semi-structured interviews, conducted from the time the patients were informed by their doctors that they might experience alopecia due to chemotherapy to the time they actually experienced alopecia and until they were able to accept the change. Inductive qualitative analysis was employed to close in on the subjective experiences of the cancer patients. The results showed the existence of six phases in the psychosocial reactions in the process of alopecia: phase one was the reaction after the doctor's explanation; phase two was the reaction when the hair starts to fall out; phase three was the reaction when the hair starts to intensely fall out; phase four was the reaction when the hair has completely fallen out; phase five was the reaction to behavior for coping with alopecia; and phase six was the reaction to change in interpersonal human relationships. The results also made it clear that there are five types of reaction patterns as follows: 1) treatment priority interpersonal relationship maintenance type; 2) alopecia agitated interpersonal relationship maintenance type; 3) alopecia agitated interpersonal relationship reduction type; 4) alopecia denial interpersonal relationship reduction type; and 5) alopecia denial treatment interruption type. It is important to find out which of the five types the patients belong to early during treatment and provide support so that nursing intervention that suits each individual can be practiced. The purpose of this study is to make clear the process in which patients receiving chemotherapy come to accept alopecia and to examine evidence-based nursing care on patients with strong mental distress from alopecia.
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Ishida, Masatoshi,Kim, Soo-Jin,Preihs, Christian,Ohkubo, Kei,Lim, Jong Min,Lee, Byung Sun,Park, Jung Su,Lynch, Vincent M.,Roznyatovskiy, Vladimir V.,Sarma, Tridib,Panda, Pradeepta K.,Lee, Chang-Hee,Fu Nature Publishing Group 2013 Nature chemistry Vol.5 No.1
Proton-coupled electron transfer (PCET) processes are among the most important phenomena that control a variety of chemical and biological transformations. Although extensively studied in a variety of natural systems and discrete metal complexes, PCET mechanisms are less well codified in the case of purely organic compounds. Here we report that a planar 棺,棺??phenylene-bridged hexaphyrin (1.0.1.0.1.0), a 24 ?-electron antiaromatic species termed rosarin, displays unique redox reactivity on protonation. Specifically, treatment with acid (for example, HI) yields a 26 ?-electron aromatic triprotonated monocationic species that is produced spontaneously via an intermediate??but stable??25 ?-electron non-aromatic triprotonated monoradical dication. This latter species is also produced on treatment of the original 24 ?-electron antiaromatic starting material with HCl or HBr. The stepwise nature of the proton-coupled reduction observed in the planar rosarin stands in marked contrast to that seen for non-annulated rosarins and other ostensibly antiaromatic expanded porphyrinoids.
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Ishida, Masatoshi,Hwang, Daesub,Zhang, Zhan,Choi, Yung Ji,Oh, Juwon,Lynch, Vincent M,Kim, Dong Young,Sessler, Jonanthan L,Kim, Dongho Wiley-VCH 2015 ChemSusChem Vol.8 No.17
<P>A series of new beta-functionalized push-pull-structured porphyrin dyes were synthesized so as to investigate the effect of the p-conjugated spacer on the performance of dye-sensitized solar cells (DSSCs). Suzuki-and Heck-type palladium-catalyzed coupling methodologies were used to obtain various beta-functionalized porphyrins and beta-benzoic acid (ZnPHn) and beta-vinylbenzoic acid (ZnPVn) derivatives from beta-borylated porphyrin precursors. Photophysical studies of the resulting porphyrins revealed a clear dependence on the nature of the beta linker. In particular, it was found that a beta-vinylene linkage perturbs the electronic structure of the porphyrin core; this is less true for a beta-phenyl linkage. Theoretical analyses provided support for the intrinsic intramolecular charge-transfer character of the beta-functionalized, push-pull porphyrins of this study. The extent of charge transfer depends on the nature of the beta-conjugated linkage. The photovoltaic performances of the cells sensitized with beta-phenylenevinylene ZnPVn exhibited higher power conversion efficiency values than those bearing beta-phenyl linkages (ZnPHn). This was ascribed to differences in light-harvesting efficiency. Furthermore, compared to the use of a standard iodine-based electrolyte, the DSSC performance of cells made from the present porphyrins was improved by more than 1% upon using a cobalt(II/III)-based electrolyte. Under standard AM 1.5 illumination, the highest efficiency, 8.2 %, was obtained by using cells made from the doubly beta-butadiene-linked porphyrin.</P>
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Ishida, Yuko,Cornel, Anthony J.,Leal, Walter S. Korean Society of Applied Entomology 2003 Journal of Asia-Pacific Entomology Vol.6 No.1
We have identified and cloned an odorant-binding protein from the female mosquito, Culex tarsalis (CtarOBP). As expected for an olfactory protein, CtarOBP was detected by gel electrophoresis analysis in antennae but not in control tissues (legs). The isolated protein was identified by in-gel digestion and subsequent analysis of internal fragments by tandem mass spectrometry (MS-MS). Based on the amino acid sequences of two peptides generated by enzymatic digestion, degenerate primers were designed for cDNA cloning. The complete cDNA (cloned by RACE) encoded a protein with a signal peptide (24 residues) and a mature protein of 125 amino acid residues. The calculated molecular mass and isoelectric point of the mature protein were 14,515 Da and pI 5.5, respectively. CtarOBP showed the hallmark of odorant-binding proteins, 6 cysteine residues, and high sequence homology (61-96%) to previously characterized mosquito OBPs.
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Ishida, Masatoshi,Hwang, Deasub,Koo, Young Bean,Sung, Jooyoung,Kim, Dong Young,Sessler, Jonathan L.,Kim, Dongho The Royal Society of Chemistry 2013 Chemical communications Vol.49 No.80
<P>The palladium-catalyzed oxidative alkynylation of β-borylated porphyrins allows for concise preparation of push–pull structured ethynylbenzoic acid porphyrin derivatives. The resulting β-singly- and doubly-substituted porphyrin dyes are regarded as isomeric derivatives of the corresponding <I>meso</I>-substituted reference systems, and were found to give rise to nearly equal power conversion efficiencies when analyzed in DSSCs.</P> <P>Graphic Abstract</P><P>A new set of β-ethynylphenyl substituted porphyrin-based DSSC dyes were prepared <I>via</I> palladium-catalyzed direct alkynylation of β-borylated porphyrins to investigate the effect of the structure–efficiency relationship. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c3cc44847a'> </P>
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