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Yuka Sugawara Kikuchi,Takashi Kanbayashi,Tetsuo Shimizu 대한신경정신의학회 2019 PSYCHIATRY INVESTIGATION Vol.16 No.4
ObjectiveaaThe objective of this study was to investigate the relationship between the serum concentration of clozapine (C-CLZ), Ndesmethylclozapine (N-CLZ) and the daily dose of CLZ (D-CLZ), and the relationships among CLZ and electroencephalogram (EEG) abnormalities. MethodsaaTwenty-eight patients were recruited to this study, but 8 patients were excluded because clozapine was discontinued before the post-treatment measurement of EEG or C-CLZ. Ultimately, 20 patients (6 men, 14 women) with an average age of 36 years were enrolled. The subjects were divided into EEG normal and abnormal groups. C-CLZ and N-CLZ were measured at 4, 12, 26, and 52 weeks after initiating CLZ administration. ResultsaaAll patients had normal baseline EEG signals, and 8 patients showed EEG abnormalities later. There were significant correlations between C-CLZ and D-CLZ, and between N-CLZ and D-CLZ. The C-CLZ/D-CLZ, N-CLZ/D-CLZ, and C-CLZ/N-CLZ ratio were not significantly different between the EEG normal and EEG abnormal groups. The EEG abnormal group had significant higher proportion of patients with high intra-individual variability in their C-CLZ/D-CLZ ratio. ConclusionaaThere is no relationship between C-CLZ and EEG abnormalities. However, patients with high intra-individual variability in their C-CLZ/D-CLZ ratio had greater possibility of exhibiting EEG abnormalities.
Evaluation of CD4+ cells infiltration as a prognostic factor in cervical intraepithelial neoplasia 2
Guanliang Chen,Takashi Iwata,Masaki Sugawara,Hiroshi Nishio,Yuki Katoh,Iwao Kukimoto,Daisuke Aoki 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.1
Objective: To identify candidate predictors for the prognosis of cervical intraepithelial neoplasia 2 (CIN2) lesions and evaluate the prognostic value of the local immune response. Methods: One hundred fifteen CIN2 patients were enrolled. The percentage of p16-, minichromosome maintenance complex component 2- or apolipoprotein B mRNA editing enzyme catalytic subunit 3G (APOBEC3G)-positive cells was determined immunohistochemically. Tumor-infiltrating lymphocytes (TILs) in intertumoral lesions were scored using an automated system. CIN3 disease progression and regression rates were estimated by the Kaplan–Meier method. A case-control study was conducted to screen CIN2 prognostic factors in 10 regression and 10 progression patients. Selected factors were examined in a cohort study to determine their prognostic value for CIN2. Results: Among all participants, the cumulative progression and regression rates at 60 months were 0.477 and 0.510, respectively. In the case-control study, p16- and APOBEC3G-positive cells were higher in the progression group (p=0.043, p=0.023). Additionally, CD4+ cell infiltration was enhanced in the regression group (p=0.023). The cohort study revealed a significantly increased progression rate in patients with elevated p16-positive cells (p<0.001), and increased CD4+ TIL infiltration was associated with better regression (p=0.011). Kaplan–Meier analysis according to human papillomavirus (HPV) positivity revealed a greater CIN3 development risk in HPV16-positive patients than in HPV16-negative cases. Finally, multivariate analysis identified HPV16 infection and CD4+ TIL infiltration as independent prognostic factors in CIN2 regression. Conclusion: CD4+ TIL infiltration in intertumoral lesions was related with CIN2 regression. Our findings suggest CD4+ TIL infiltration may be useful for the triage of CIN2 patients.
A New Approach of Imaging Defects in Concrete Structures
Lee, Sanghun,Endo, Takao,Kagaya, Makoto,Sugawara, Takashi 한국방재학회 2012 한국방재학회 학술발표대회논문집 Vol.11 No.-
Image created by stack imaging spectral amplitudes based on the impact-echo (SIBIE) method is largely one-dimensional because a single frequency domain spectrum for wave reflected below a single point of impact is used to create the image. The method has limitations for representing defects in a cross section of a concrete structural element using two-dimensional coordinates. This study focused on defect detection and visualization in a concrete structural element using multiple impacts and accumulated SIBIE. An impactor was used to induce energy at multiple points at positioned at prescribed intervals along the structural element. A modified SIBIE method was applied to the collected data of each point and the modified SIBIE images were accumulated to generate one image (an accumulated SIBIE image). As a result, the defect positions could be represented in the cross section of the structural element using a two-dimensional coordinate system.
Sb NQR Study of the Filled Skutterudite CeFe4Sb12 Synthesized under High Pressure
Ko-ichi Magishi,,Masahiro Takahashi,Takahito Saito,Kuniyuki Koyama,Hitoshi Sugawara,Takashi Saito,Sho Tatsuoka,Kenya Tanaka,Hideyuki Sato 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
We report the results of Sb nuclear quadrupole resonance (NQR) measurements on the filledskutterudite CeFe4Sb12 synthesized under high pressure (HP) and compare them with those forthe sample synthesized under ambient pressure (AP) to understand the influence of the Ce-sitefilling fraction. The NQR spectra for the HP sample are much sharper than those for the APsample, suggesting that the Ce filling fraction is higher. Also, the nuclear spin-lattice relaxationrate 1/T1 follows an exponential decrease 1/T1 ∝ exp(−Δ/kBT), with the gap being Δ/kB = 270K at temperatures above 100 K, which is larger than that for the AP sample. This result suggeststhat the c-f hybridization is enhanced by increasing the Ce-site filling fraction.
이상훈,엔도타카오,카가야마코토,스가와라타케시,Lee. Sanghun,Endo. Takao,Kagaya. Makoto,Sugawara. Takashi 한국방재학회 2013 한국방재학회 학술발표대회논문집 Vol.2013 No.1
Image created by stack imaging spectral amplitudes based on the impact-echo (SIBIE) method is largely one-dimensional because a single frequency domain spectrum for wave reflected below a single point of impact is used to create the image. The method has limitations for representing defects in a cross section of a concrete structural element using two-dimensional coordinates. This study focused on defect detection and visualization in a concrete structural element using multiple impacts and accumulated SIBIE. An impactor was used to induce energy at multiple points at positioned at prescribed intervals along the structural element. A modified SIBIE method was applied to the collected data of each point and the modified SIBIE images were accumulated to generate one image (an accumulated SIBIE image). As a result, the defect positions could be represented in the cross section of the structural element using a two-dimensional coordinate system.
Hot Carrier Effect in Low-Temperature Poly-Si TFTs with Sputtered Gate SiO2 Films
Yukiharu Uraoka,Hiroshi Yano,Makoto Miyashita,Tadashi Serikawa,Takashi Fuyuki,Tomoaki Hatayama,Yuta Sugawara 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.4
We investigated the reliability of low-temperature poly-Si thin film transistor (TFT) by using Si films and gate oxides fabricated by using RF sputtering method. To evaluate the immunity against the hot carrier effect, we imposed DC and dynamic stress on the sputtered TFT. We found that reliability was higher than it was a conventional TFT. The sputtered TFT showed very little degradation. Observation by emission microscope was performed to analyze their strong immunity. In a conventional TFT, emission was observed only at the drain edge. However, in sputtered TFT, emission was observed not only at the drain edge but also at the source edge. We proposed a model explaining the emission in a sputtered TFT. To prove this model, we examined the emission in a SOI TFT. A similar emission mode supports our model. Sputtered TFTs are very promising for next generation.?