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Kitagawa, Hakuba,Ohtsu, Hiroyoshi,Kawano, Masaki WILEY‐VCH Verlag 2013 Angewandte Chemie Vol.125 No.47
<P><B>Im Netz gefangen</B>: Ein kinetisch angeordnetes, aber thermisch stabiles Netzwerk wird unter Verwendung der labilen Metallspezies [Cu<SUB>4</SUB>I<SUB>4</SUB>(PPh<SUB>3</SUB>)<SUB>4</SUB>] erhalten. In einzigartiger Weise adsorbiert es I<SUB>2</SUB> durch Chemisorption über I<SUB>3</SUB><SUP>−</SUP>‐Bildung. Das chemisorbierte I<SUB>2</SUB> desorbiert leicht bei >380 K wegen der dynamischen Bewegung des Gerüstes. Ein thermodynamisch angeordnetes Netzwerk physisorbiert I<SUB>2</SUB>, das exakt in den Kanal passt.</P>
Spinopelvic Alignment and Low Back Pain before and after Total Knee Arthroplasty
Kitagawa Atsushi,Yamamoto Junya,Toda Mitsunori,Hashimoto Yasushi 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.1
Study Design: Prospective cohort study.Purpose: This study aims to examine changes in spinopelvic alignment, sagittal global balance, and low back pain (LBP) following the removal of knee flexion contracture by total knee arthroplasty (TKA).Overview of Literature: The limitation of the knee extension was correlated with the decrease in lumbar lordosis (LL). Currently, there are no studies evaluating the spinopelvic alignment and LBP before and after TKAs.Methods: Sagittal spinopelvic alignment was evaluated in 110 subjects using radiographs of the whole spine. Parameters measured in this study included sagittal vertical axis (SVA), LL, sacral slope (SS), pelvic tilt (PT), and pelvic incidence (PI). The distribution of sagittal plane modifier grade was evaluated according to the Scoliosis Research Society-Schwab classification of adult spinal deformity (ASD). Consequently, personal history related to LBP was obtained, and the association of pre- and postoperative LBP and spinopelvic alignment was investigated.Results: Preoperatively, 66% of all subjects showed LBP and mostly exhibited anteriorly shifted global imbalance associated with a decrease in LL and knee flexion contractures, and the subject who had severe flexion contracture of the knee joint showed more forwardly shifted global balance with backward PT and decrease in LL. After TKAs, the knee flexion contractures were eliminated in most cases, and one-third of subjects experienced decrease in LBP. However, SVA increased more and associated with slight decrease of PT and increase of SS. No significant differences were confirmed between pre- and postoperative values of LL and PI. In addition, there were no significant differences in postoperative values of spinopelvic parameters between subjects with and without relieved LBP.Conclusions: Although one-third of subjects experienced decrease of LBP after TKAs, the sagittal global imbalance was not restored through the removal of knee flexion contracture.
Kitagawa, Yasuhide,Urata, Satoko,Narimoto, Kazutaka,Nakagawa, Tomomi,Izumi, Kouji,Kadono, Yoshifumi,Konaka, Hiroyuki,Mizokami, Atsushi,Namiki, Mikio Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.17
The International Prostate Symptom Score (IPSS) is often used as an interview sheet for assessing lower urinary tract symptoms (LUTS) at the time of prostate-specific antigen (PSA) testing during population-based screening for prostate cancer. However, the relationship between prostate cancer detection and LUTS status remains controversial. To elucidate this relationship, the cumulative probability of prostate cancer detection using IPSS in biopsy samples from patients categorized by serum PSA levels was investigated. The clinical characteristics of prostate cancer detected using IPSS during screening were also investigated. A total of 1,739 men aged 54-75 years with elevated serum PSA levels who completed the IPSS questionnaire during the initial population screening in Kanazawa City, Japan and underwent systematic transrectal ultrasonography-guided prostate biopsy between 2000 and 2013 were enrolled in the present study. Of the 1,739 men, 544 (31.3%) were diagnosed with prostate cancer during the observation period. The probability of cancer detection at 3 years in the entire study population was 27.4% and 32.7% for men with $IPSS{\leq}7$ and those with $IPSS{\geq}8$, respectively; there was no statistically significant difference between groups. In men with serum PSA levels of 6.1 to 12.0ng/mL at initial screening, the probability of cancer detection was significantly higher in men with $IPSS{\leq}7$ than in those with $IPSS{\geq}8$. There were no significant differences in clinical characteristics between groups of patients stratified by IPSS. These findings indicate that the use of IPSS for LUTS status evaluation may be useful for prostate cancer detection in the limited range of serum PSA levels.
Flame Propagation to Lean Region in Stratified Mixture Formed by Transient Gas Fuel Jet
Toshiaki KITAGAWA,Hiroyuki KIDO,Kyu Sung KIM,Hirotaka KOGA 한국자동차공학회 2001 한국자동차공학회 Symposium Vol.- No.-
Combustion characteristics of the stratified mixture were examined by the experiments using a constant volume bomb and the numerical simulations of counterflow premixed flame. We investigated the characteristics of the flame propagation to the lean region and examined the minimum equivalence ratio of the lean region that the flame generated in the rich region can propagate to, as the bulk quenching was found to occur in the over lean region.<br/> In the experiments, the stratified mixture was formed in the constant volume bomb by the injection of gaseous propane into the lean propane-air mixture charge, whose equivalence ratio was less than the lower flammability limit of the premixed mixture. The flame generated in the fuel jet region propagated wide into the lean mixture charge region as the stoichiometry of the mixture charge was increased, even though the charge was too lean to ignite. This result shows the flame in the rich region propagates into the lean region by the "back-support" of the rich flame.<br/> Numerical study of counterflow premixed flame was examined next in order to investigate the interaction between the rich flame and the lean region. Rich and lean mixtures were opposed and the stoichiometry of the lean mixture was varied widely. Reaction rate of the propane in the lean mixture was large when the equivalence ratio of the lean mixture was 0.40 or more.<br/>