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Search Results: 1 - 10 of 40284 matches for " Jun Sato "
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The Effect of Participants' Stress Manipulation on Experimenters’ Mood States  [PDF]
Hirotsune Sato, Jun I. Kawahara
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.88079
Abstract: This study examined whether experimenters’ mood states vary as a function of participants’ mood states. Thirty unacquainted “Experimenter”-“Participant” pairs participated. Participants delivered an unscripted speech in front of an experimenter while being videotaped. The stress levels of experimenters and participants were measured using a questionnaire and salivary cortisol measurements prior to and following the stress induction. A strong negative relationship was found between changes in the stress indices of the experimenters and those of the participants; a smaller increase in stress among participants was associated with a greater increase in stress among experimenters. This result suggests that stress induction can produce negative side effects among experimenters.
Quantum Group U_q(sl(2)) Symmetry and Explicit Evaluation of the One-Point Functions of the Integrable Spin-1 XXZ Chain
Tetsuo Deguchi,Jun Sato
Symmetry, Integrability and Geometry : Methods and Applications , 2011,
Abstract: We show some symmetry relations among the correlation functions of the integrable higher-spin XXX and XXZ spin chains, where we explicitly evaluate the multiple integrals representing the one-point functions in the spin-1 case. We review the multiple-integral representations of correlation functions for the integrable higher-spin XXZ chains derived in a region of the massless regime including the anti-ferromagnetic point. Here we make use of the gauge transformations between the symmetric and asymmetric R-matrices, which correspond to the principal and homogeneous gradings, respectively, and we send the inhomogeneous parameters to the set of complete 2s-strings. We also give a numerical support for the analytical expression of the one-point functions in the spin-1 case.
Phylogeographic and Feeding Ecological Effects on the Mustelid Faunal Assemblages in Japan
Jun J. Sato
Animal Systematics, Evolution and Diversity , 2013, DOI: http://dx.doi.org/10.5635/ased.2013.29.2.99
Abstract: Phylogeographic and feeding ecological studies of seven terrestrial mustelid species (Carnivora, Mustelidae), the Japanese marten Martes melampus, the sable Martes zibellina, the Japanese badger Meles anakuma, the ermine or the stoat Mustela erminea, the Japanese weasel Mustela itatsi, the least weasel Mustela nivalis, and the Siberian weasel Mustela sibirica, representing four biogeographic patterns in the Japanese archipelagos (Hokkaido, Honshu-Shikoku-Kyushu, Tsushima, and Hokkaido-Honshu), were reviewed in order to clarify causes for the faunal assemblage processes of those mustelid species in Japan. Here, three main constraints were extracted as important factors on the mustelid assemblage. First, fundamental evolutionary differences maintained by niche conservatism in each ecologically diversified lineage (“evolutionary constraint”) would enable the species to co-occur without any major problem (coexistence among Martes, Meles, and Mustela species). Second, “ecological constraints” would force two closely related species to be allopatric by competitive exclusion (Mu. itatsi and Mu. sibirica) or to be sympatric by resource partitions (Mu. erminea and Mu. nivalis). Third and most importantly, “geological constraints” would allow specific species to be embraced by a particular geographic region, primarily deciding which species co-occurs. The allopatric distribution of two Martes species in Japan would have been established by the strong effect of the geological separation in Tsugaru Strait. Elucidating both phylogeny and ecology of co-existing species in a community assemblage is important to know which species possess distinct lineage and which ecological traits are adapted to local environments, fulfilling the requirement of the field of conservation biology that endemism and adaptation should both be considered. The Japanese archipelagos would, therefore, provide valuable insight into the conservation for small carnivoran species.
Fifth-neighbor spin-spin correlator for the anti-ferromagnetic Heisenberg chain
Jun Sato,Masahiro Shiroishi
Physics , 2005, DOI: 10.1088/0305-4470/38/21/L05
Abstract: We study the generating function of the spin-spin correlation functions in the ground state of the anti-ferromagnetic spin-1/2 Heisenberg chain without magnetic field. We have found its fundamental functional relations from those for general correlation functions, which originate in the quantum Knizhink-Zamolodchikov equation. Using these relations, we have calculated the explicit form of the generating functions up to n=6. Accordingly we could obtain the spin-spin correlator up to k=5.
Quantum Group U_q(sl(2)) Symmetry and Explicit Evaluation of the One-Point Functions of the Integrable Spin-1 XXZ Chain
Tetsuo Deguchi,Jun Sato
Physics , 2011, DOI: 10.3842/SIGMA.2011.056
Abstract: We show some symmetry relations among the correlation functions of the integrable higher-spin XXX and XXZ spin chains, where we explicitly evaluate the multiple integrals representing the one-point functions in the spin-1 case. We review the multiple-integral representations of correlation functions for the integrable higher-spin XXZ chains derived in a region of the massless regime including the anti-ferromagnetic point. Here we make use of the gauge transformations between the symmetric and asymmetric R-matrices, which correspond to the principal and homogeneous gradings, respectively, and we send the inhomogeneous parameters to the set of complete 2s-strings. We also give a numerical support for the analytical expression of the one-point functions in the spin-1 case.
Density matrix elements and entanglement entropy for the spin-1/2 XXZ chain at $Δ$=1/2
Jun Sato,Masahiro Shiroishi
Mathematics , 2007, DOI: 10.1088/1751-8113/40/30/009
Abstract: We have analytically obtained all the density matrix elements up to six lattice sites for the spin-1/2 Heisenberg XXZ chain at $\Delta=1/2$. We use the multiple integral formula of the correlation function for the massless XXZ chain derived by Jimbo and Miwa. As for the spin-spin correlation functions, we have newly obtained the fourth- and fifth-neighbour transverse correlation functions. We have calculated all the eigenvalues of the density matrix and analyze the eigenvalue-distribution. Using these results the exact values of the entanglement entropy for the reduced density matrix up six lattice sites have been obtained. We observe that our exact results agree quite well with the asymptotic formula predicted by the conformal field theory.
A comparison of a patient-rated visual analogue scale with the Liebowitz Social Anxiety Scale for social anxiety disorder: A cross-sectional study  [PDF]
Hiromi Okitsu, Jitsuki Sawamura, Katsuji Nishimura, Yasuto Sato, Jun Ishigooka
Open Journal of Psychiatry (OJPsych) , 2014, DOI: 10.4236/ojpsych.2014.41010
Abstract:

Introduction: The Liebowitz Social Anxiety Scale (LSAS), used to assess the severity of social anxiety disorder (SAD), requires considerable effort and time to complete. The aims of this study were: 1) to investigate whether a visual analogue scale (VAS) could be linear with the LSAS and substitute for the LSAS, 2) to relate such a VAS instrument to patient demographics. Methods: Fifty SAD patients were assessed using the LSAS and VAS instruments completed by both patients and doctors at the same session. We then drew distributions and calculated the Spearman’s ρ and κ coefficient values (divided at the median for each scale) between patient and doctor assessments. Next, each pair among the scores for the LSAS, the patient VAS and the doctor VAS was compared using Wilcoxon rank sum tests according to patient life profile data. Results: Scatter plots of pairs of scores were obtained. Spearman’s ρ was 0.661 between the LSAS and the patient VAS, 0.461 between the LSAS and the doctor VAS, and 0.494 between VAS scores of patients and doctors. The κ coefficients were 0.501 between the LSAS and patient VAS, 0.251 between the LSAS and doctor VAS, and 0.425 between patient VAS and doctor VAS (for all six, p < 0.001). The Wilcoxon rank sum tests indicated a significant difference between the groups with/ without “employment” (LSAS, patient/doctor VAS), with/without “graduation from junior college/university” (doctor VAS) (p < 0.05) and with/without marital history (the age of first consultation) (p < 0.01). Conclusions: A patient VAS may substitute for the LSAS and offer the versatility necessary to capture patient states and life profiles.

Household and Community Disaster Preparedness in Japanese Provincial City: A Population-Based Household Survey  [PDF]
Jun Tomio, Hajime Sato, Yuji Matsuda, Toshie Koga, Hiroko Mizumura
Advances in Anthropology (AA) , 2014, DOI: 10.4236/aa.2014.42010
Abstract:

Household- and community-level preparedness have been re-emphasized after recent major earthquakes and tsunamis in Japan. The paper examines the prevalence and the determinants of disaster preparedness among the residents of a provincial city in Japan at both levels. Furthermore, it seeks to uncover the associations between household- and community-level preparedness activities to test the hypothesis that a complementary relationship exists between them. We used a subset of a population-based household questionnaire survey of 4000 randomly sampled households in Komoro City in the Nagano Prefecture of Japan in February and March of 2011. The questionnaire included specific questions to measure disaster the preparedness status at both the household and community levels. The characteristics and associations of household- and community-level preparedness were analyzed with multivariable logistic regression models. We found insufficient disaster preparedness at both household and community levels. Older, female, and better educated household heads were associated with better household preparedness, while length at residence, non-single status, presence of an elderly household member, and farming occupations were associated with better community preparedness. Households with one or more household-level preparedness measures were more likely to receive community assistance than those lacking them. The relationship between household and community preparedness was not complementary. Hence, a large proportion of the households were unprepared at both the community and household levels.

A Case of Atypical Postoperative Malignant Hyperthermia after the Eighth General Anesthesia in a Child with Cheilognathopalatoschisis  [PDF]
Yoko Okumura, Jun Harada, Masahiro Yamada, Aiji Sato
Open Journal of Anesthesiology (OJAnes) , 2017, DOI: 10.4236/ojanes.2017.78024
Abstract: Background and Objectives: Postoperative malignant hyperthermia (MH) occurs after discontinuation of volatile anesthetics or in the early postoperative period after general anesthesia. We experienced a case of atypical postoperative MH identified by dark reddish-brown urine produced 40 min after the end of eighth general anesthesia in an 11-year-old male with cheilognathopalatoschisis. Case Report: Anesthesia was induced using thiamylal, fentanyl citrate, remifentanil, rocuronium, and maintained with sevoflurane, fentanyl citrate, remifentanil. The patient was observed clenching his teeth, tachycardia, profuse perspiration, shivering-like motion, and hyperpnoea from the end of the operation to return to the HCU ward, whereas the maximum of axillary temperature was 37.9°C. Although these abnormal symptoms and vital signs were disappeared, abnormally high level of CK, AST, ALT, LDH, ALP, and myoglobinuria were recognized. We decided to not administer dantrolene hydrate because his vital signs and daily activity were restored to those observed preoperatively. However, the patient was continued infusion therapy for 9 days after the operation until the blood and urine test values returned to the preoperative ones. Conclusions: We experienced atypical postoperative MH identified by dark reddish-brown urine 40 min after the end of eighth general anesthesia. We decided not to administer dantrolene hydrate because his vital signs and daily activity were restored to those observed preoperatively when we recognized abnormally high level of CK, AST, ALT, LDH, ALP, and myoglobinuria. Consequently, rhabdomyolysis continued and in 9 days, the abnormally high values of CK, AST, ALT, LDH, and ALP recovered to the reference value.
Identification of CAR/RXRα Hetero-dimer Binding Sites in the Human Genome by a Modified Yeast One-Hybrid Assay  [PDF]
Kenta Hosoda, Yuichiro Kanno, Masashi Sato, Jun Inajima, Yoshio Inouye, Kazuyuki Yanai
Advances in Biological Chemistry (ABC) , 2015, DOI: 10.4236/abc.2015.52008
Abstract: The constitutive androstane receptor (CAR) is a transcription factor that belongs to the nuclear receptor superfamily. CAR binds as a heterodimer with the retinoid X receptor α (RXRα) to CAR response elements (CAREs) and regulates the expression of various drug metabolizing enzymes and transporters. To identify CAR/RXRα binding sites in the human genome, we performed a modified yeast one-hybrid assay that enables rapid and efficient identification of genomic targets for DNA-binding proteins. DNA fragments were recovered from positive yeast colonies by PCR and sequenced. A motif enrichment analysis revealed that the most frequent motif was a direct repeat (DR) of RGKTCA-like core sequence spaced by 4 bp. Next, we predicted 149 putative CAR/RXRα binding sites from 414 unique clones, by searching for DRs, everted repeats (ERs) and inverted repeats (IRs) of the RGKTCA-like core motif. Based on gel mobility shift assays, the CAR/RXRα heterodimer could directly interact with the 108 predicted sequences, which included not only classical CAREs but also a wide variety of arrangements. Furthermore, we identified 17 regulatory polymorphisms on the CAR/RXRα-binding sites that may influence individual variation in the expression of CAR-regulated genes. These results provide insights into the molecular mechanisms underlying the physiological and pathological actions of CAR/RXRα het-erodimers.
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