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Risa Yamada(Risa Yamada ),Takeshi Fujii(Takeshi Fujii ),Kotaro Hattori(Kotaro Hattori ),Hiroaki Hori(Hiroaki Hori ),Ryo Matsumura(Ryo Matsumura ),Tomoko Kurashimo(Tomoko Kurashimo ),Naoko Ishihara(Nao 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.2
Objective: This study aimed to determine if the discrepancy between depression severity rated by clinicians and that reported by patients depends on key behavioral/psychological features in patients with mood disorders. Methods: Participants included 100 patients with mood disorders. First, we examined correlations and regressions between scores on the Hamilton Depression Rating Scale (HAMD) and Beck Depression Inventory (BDI). Second, we divided the participants into those who provided 1) greater ratings for the BDI compared with the HAMD (BDI relative- overrating, BO) group, 2) comparable ratings for the BDI and HAMD (BDI relatively concordant, BC) group, or 3) less ratings for the BDI (BDI relative-underrating, BU) group. Adverse childhood experiences, autistic-like traits, and coping styles were evaluated with a six-item short version of the Childhood Trauma Questionnaire (CTQ-6), the Social Responsiveness Scale for Adults (SRS-A), and the Ways of Coping Checklist (WCCL), respectively. Results: A significant correlation was found between HAMD and BDI scores. Total and emotional abuse subscale scores from the CTQ-6, and the self-blame subscale scores from the WCCL were significantly higher for the BO group compared with the BU group. The BO group also elicited significantly higher SRS-A total scores than did the other groups. Conclusion: These findings suggest that patients with adverse emotional experiences, autistic-like traits, and self-blame coping styles perceive greater distress than that evaluated objectively by clinicians. The results indicate the need for inclusion of subjective assessments to effectively evaluate depressive symptoms in patients deemed to have these psycho- behavioral concerns.
Evaluation of 131I (monoiodide) BSP for Clinical Studies
Ueda, Hideo,Iro, Masahiro,Kurata, Kunio,Yamada, Hideo,Iwase, Tohru,Migita, Tohru,Kameda, Haruo,Kato, Sadatake,Sato, Noboru,Ide, Kazuko,Wakebayashi, Takao 대한핵의학회 1971 핵의학 분자영상 Vol.5 No.1
"In 1925 Rosenthal and White introduced a bromosulfophthalein (BSP) dye retention test as a sensitive indicator of liver function. Even now it is regared as one of the most sensitive agents for the detection of non-icteric liver disease (liver cirrhosis, early stage of acute-hepatitis and hepatic tumor). BSP accumulates in the liver cells, conjugates with glutathione and is excreted into the bile. Therefore, a disorder in its excretion is due to a disturbance of one of these processes. Since bilirubin and BSP compete for uptake by the liver and increased serum bilirubin interferes with the colorimetric determination of BSP, it has been considered that BSP test is inappropriate for the differential diagnosis of jaundice conditions. It has been generally said that when jaundice is present, the BSP test is useless and should not be performed. In 1955, Taplin et al. labeled rose bengal, a dye similarly metabolized in the liver as BSP, with 131I and measured the hepatic excretion of this dye by external monitoring. Laster, Blahd et al. applied this method to the determination of the peripheral pool, succeeding in the diagnosis of chronic and subacute hepatic diseases without colorimetry. In 1968, Yamada, Taplin et al. suggested the possibility of differentiating so-called medical jaundice from surgical jaundice by scanning the subjects during 24 to 48 hours following intravenous injection of 131I-labeled rose bengal. As mentioned before, many authorities hold the opinion that BSP is not proper for the differential diagnosis of jaundice states. Some have tried to diagnose biliary tract obstruction by a malignant tumor by measuring BSP excretion into duodenal fluid and others by quantitating changes in serum levels of conjugated and free BSP. Furthermore, Burton et al. reported that in patients with extrahepatic obstructive jaundice, BSP retention was observed for 24 days after its administration. From a consideration of all these finding we came to a conclusion that the differential diagnosis of various jaundice states, (medical, surgical and constitutional) is possible by sequential scanning with radioisotope-labeled BSP, as with rose bengal, in accordance with procedures described by Yamada, Taplin et al. The evidence suggested that labeled BSP might make a more important contribution than rose bengal. "
Experimental investigation of thermo-optic effects in SiC and Si photonic crystal nanocavities.
Yamada, Shota,Song, Bong-Shik,Asano, Takashi,Noda, Susumu Optical Society of America 2011 Optics letters Vol.36 No.20
<P>We experimentally investigate and compare the thermo-optic effects of silicon carbide (SiC) and silicon (Si) photonic crystal nanocavities on their resonant wavelengths over a temperature range of 25?C to nearly 200?C by using a laser source with a wavelength close to the telecommunication wavelength range of 1550?nm. The measured results clearly show that the shift in the resonant wavelength of the SiC cavity is significantly (by a factor of 3) less than that of the Si cavity for the same ambient temperature changes. In addition, the measured results provide direct estimates of the thermo-optic coefficients (dn/dT) for thin SiC and Si as 3.8710(-5)/C and 1.6010(-4)/C, respectively, for this temperature range.</P>
THE RICCI CURVATURE ON DIRECTED GRAPHS
Yamada, Taiki Korean Mathematical Society 2019 대한수학회지 Vol.56 No.1
In this paper, we consider the Ricci curvature of a directed graph, based on Lin-Lu-Yau's definition. We give some properties of the Ricci curvature, including conditions for a directed regular graph to be Ricci-flat. Moreover, we calculate the Ricci curvature of the cartesian product of directed graphs.
Yamada, Yusuke,Nomura, Akifumi,Miyahigashi, Takamitsu,Ohkubo, Kei,Fukuzumi, Shunichi American Chemical Society 2013 The journal of physical chemistry. A, Molecules, s Vol.117 No.18
<P>The addition of acetate ion to an O<SUB>2</SUB>-saturated mixed solution of acetonitrile and water containing oxalic acid as a reductant and 2-phenyl-4-(1-naphthyl)quinolinium ion (QuPh<SUP>+</SUP>–NA) as a photocatalyst dramatically enhanced the turnover number of hydrogen peroxide (H<SUB>2</SUB>O<SUB>2</SUB>) production. In this photocatalytic H<SUB>2</SUB>O<SUB>2</SUB> production, a base is required to facilitate deprotonation of oxalic acid forming oxalate dianion, which acts as an actual electron donor, whereas a Brønsted acid is also necessary to protonate O<SUB>2</SUB><SUP>•–</SUP> for production of H<SUB>2</SUB>O<SUB>2</SUB> by disproportionation. The addition of acetate ion to a reaction solution facilitates both the deprotonation of oxalic acid and the protonation of O<SUB>2</SUB><SUP>•–</SUP> owing to a pH buffer effect. The quantum yield of the photocatalytic H<SUB>2</SUB>O<SUB>2</SUB> production under photoirradiation (λ = 334 nm) of an O<SUB>2</SUB>-saturated acetonitrile–water mixed solution containing acetate ion, oxalic acid and QuPh<SUP>+</SUP>–NA was determined to be as high as 0.34, which is more than double the quantum yield obtained by using oxalate salt as an electron donor without acetate ion (0.14). In addition, the turnover number of QuPh<SUP>+</SUP>–NA reached more than 340. The reaction mechanism and the effect of solvent composition on the photocatalytic H<SUB>2</SUB>O<SUB>2</SUB> production were scrutinized by using nanosecond laser flash photolysis.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpcafh/2013/jpcafh.2013.117.issue-18/jp312795f/production/images/medium/jp-2012-12795f_0012.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp312795f'>ACS Electronic Supporting Info</A></P>
Yamada, Ana Lucia M.,Pinheiro, Marcelo,Marsiglia, Marilia F.,Hagen, Stefano Carlo F.,Baccarin, Raquel Yvonne A.,da Silva, Luis Claudio L.C. The Korean Society of Veterinary Science 2020 JOURNAL OF VETERINARY SCIENCE Vol.21 No.2
Background: Physical exercise is known to cause significant joint changes. Thus, monitoring joint behavior of athletic horses is essential in early disorders recognition, allowing the proper management. Objectives: The aims of this study were to determine the morphological patterns, physical examination characteristics and ultrasound findings of show jumping horses in training and to establish a score-based examination model for physical and ultrasound follow-ups of metacarpophalangeal joint changes in these animals. Methods: A total of 52 metacarpophalangeal joints from 26 horses who were initially in the taming stage were evaluated, and the horses' athletic progression was monitored. The horses were evaluated by a physical examination and by B-mode and Doppler-mode ultrasound examinations, starting at time zero (T0), which occurred concomitantly with the beginning of training, and every 3 months thereafter for a follow-up period of 18 months. Results: The standardized examination model revealed an increase in the maximum joint flexion angles and higher scores on the physical and ultrasound examinations after scoring was performed by predefined assessment tools, especially between 3 and 6 months of evaluation, which was immediately after the horses started more intense training. The lameness score and the ultrasound examination score were slightly higher at the end of the study. Conclusions: The observed results were probably caused by the implementation of a training regimen and joint adaptation to physical conditioning. The joints most likely undergo a pre-osteoarthritic period due to work overload, which can manifest in a consistent or adaptive manner, as observed during this study. Thus, continuous monitoring of young athlete horses by physical and ultrasound examinations that can be scored is essential.