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  • Takanori Hida
    Scientiae Mathematicae Japonicae
    2018年 81 巻 2 号 141-165
    発行日: 2018年
    公開日: 2019/05/10
    ジャーナル フリー
  • Takanori Hida
    Scientiae Mathematicae Japonicae
    2017年 80 巻 2 号 171-188
    発行日: 2017年
    公開日: 2019/05/10
    ジャーナル フリー
  • Letterio TOSCANO
    Tohoku Mathematical Journal, First Series
    1936年 42 巻 144-154
    発行日: 1936年
    公開日: 2010/03/19
    ジャーナル フリー
  • 藤井 彰, 小林 寿美, 田村 豊幸, 秋元 芳明, 小宮 正道, 西村 均, 小俣 裕昭, 金子 賢司
    The Journal of Nihon University School of Dentistry
    1987年 29 巻 2 号 93-99
    発行日: 1987年
    公開日: 2011/03/11
    ジャーナル フリー
    Josamycin (JM) was given orally to 10 rats at a dose of 200 mg/kg. Serum samples were obtained at 60, 120, 180, and 240 minutes after oral administration and JM concentrations in serum were determined by both high-performance liquid chromatography (HPLC) and a microbiological assay. Comparison of the JM concentrations in serum measured with HPLC and microbiological assay by regression analysis yielded a markedly high constant of inclination (Y=8.0719X-0.2995, r=0.9867, where Y is JM concentration obtained with microbiological assay and X is that obtained with HPLC; r is the regression coefficient). The difference indicated that most of the JM was metabolized and that the presence of antimicrobially active metabolites, deisovaleryl-JM being a main constituent which was also measured as JM, plays an important role in the microbiological assay. Thus, the microbiological assay might not be a suitable method for determination of the unchanged antibiotic if it is metabolized rapidly to produce antimicrobially active metabolites.
  • 第一編 流行性肝炎に於けるケファリン・コレステロール絮状反応に関する研究
    藤岡 由五
    岡山医学会雑誌
    1956年 68 巻 11 号 1875-1881
    発行日: 1956/11/30
    公開日: 2009/03/30
    ジャーナル フリー
    Since the outbreak of extensive epidemic of hepatitis in the fall of 1951 in Okayama Prefecture, the members of our Clinic have been conducting comprehensive studies from the clinical, pathological, and etiological angles. As a part of these investigation detailed studies on the changes in the serum protein were made. Since it has been proved that the nature of cephalin-cholesterol test (CCF) stands in a very intimate relationship to the conditions of the protein bodies in the serum, it has been made a series of CCF chiefly on epidemic hepatitis, but simultaneously also on hepatic cirrhosis, obstructive icterus, and a few other diseases in order to obtain informations regarding the methods of determination, various changes caused by diseases, variation in different stages of diseases, and on the possible significance CCF has in prognosis.
    1) Hanger's antigen used was that supplied by Sumitomo Chemical Company which was somewhat inferior in chemical purity and reacted too sensitively and reading made often confusing by precipitation when the test was carried out in the standard fashion. For this reason the author made it his practice to read the degree of clarity in the upper layer as standard for decision. Carried out in this fashion CCF estimated his method on 19 healthy persons showed negative result in all but one.
    2) CCF made weekly on epidemic hepatitis, hepatic cirrhosis, obstructive icterus, serum hepatitis, etc., give a strongly positive result for epidemic hepatitis which appeared mickly and remained positive as long as a trace of hepatic functional disturbance was present. In hepatic cirrhosis the test was also strangely positive but in cholecystitis, serum hepatitis, and obstructive jaundice the positive reaction was not strong.
    3) The results of hepatic functional examinations by Takata's, cobalt-hydrochloride, Gros's, Weltmann's, thymol precipitation reactions, bromsulphalen test, scarlet-red reacton, and cholin-esterase actvity test performed simultaneously with the CCF were practically parallel with one another. In the cases which failed to show conformity of results, observations of the clinical course revealed the act that in cases in which CCF was negative in spite postive by other hepatic functional test the superven clinical course was improved in the majority. For this reason it was presumed that if the results CCF becomes negative the prognosis was considered probably favorable.
  • Laust D. Rasmussen, Simon Winther, Salma Raghad Karim, Ashkan Eftekhari, Evald H. Christiansen, Lars C. Gormsen, June A. Ejlersen, Morten Böttcher
    Journal of Coronary Artery Disease
    2020年 26 巻 2 号 44-47
    発行日: 2020年
    公開日: 2020/06/25
    ジャーナル フリー
    A patient with chest pain and inferoseptal ischemia at Rubidium-82 Positron Emission Tomography (82RbPET) was revascularized in a stenosis in the LAD/D1 bifurcation, while a CTO RCA was left untreated. One-year follow-up with Seattle Angina Questionnaire and repeat 82RbPET revealed symptom relief and improved inferoseptal perfusion likely through LAD collateralization.
  • 大瀧 紀雄
    日本内科学会雑誌
    1951年 40 巻 6 号 318-321
    発行日: 1951年
    公開日: 2011/02/22
    ジャーナル フリー
  • Zhiming Lu, Chengtuo Li, Liuyi Huang, Fengping Zhong, Liangqi Fei, Hongliang Zhang, Yuhui Pan
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
    2020年 53 巻 12 号 739-746
    発行日: 2020/12/20
    公開日: 2020/12/20
    ジャーナル 認証あり

    The bottom structures in shaking bioreactors have great influence on the flow field characteristics. In this work, four kinds of bottom structures, such as conical bottom, ellipsoid bottom, flat bottom, and sphere bottom are presented, and the mixing, dissolved oxygen and shear strain rate of bioreactors with different bottom structures are simulated by means of CFD. The simulated free surface shapes were verified by the observed images in video. The results showed that turbulent kinetic energy were 0.0014 m2·s−2, 0.0016 m2·s−2, 0.0012 m2·s−2 and 0.0011 m2·s−2, and the values of kLa are 2.6 h−1, 2.9 h−1, 2.1 h−1 and 2.0 h−1 for the conical bottom, ellipsoid bottom, flat bottom and sphere bottoms, respectively. This indicates that the mixing and dissolved oxygen characteristics of the bioreactors with the ellipsoid and conical bottoms were superior to the flat and sphere bottoms. The shear strain rates in the bioreactors with different bottoms were mainly in the range of 8–10 s−1. The highest average shear strain rate was found in the bioreactor with the flat bottom, and it was still in the low shear strain rate range and suitable for the growth of shear-sensitive cells.

  • Jo Omiya, Hirofumi Hioki, Yusuke Watanabe, Akihisa Kataoka, Ken Kozuma
    Journal of Transcatheter Valve Therapies
    2024年 6 巻 1 号 5-8
    発行日: 2024年
    公開日: 2024/01/23
    ジャーナル オープンアクセス
    電子付録

    Objective: Though high prosthesis implantation mitigates the risk of conduction disturbance after transcatheter aortic valve implantation (TAVI) using the self-expandable valve, we have to be aware of the increasing risk of delayed coronary obstruction particularly in patients with small anatomy.

    Case Presentation: A 76-year-old female was admitted to the emergent room complaining chest pain at rest. Prior to this admission, she underwent TAVI with a self-expandable valve using the cusp overlap technique. Based on the finding of ST-segment elevation at inferior leads, we emergently performed coronary angiography and found severe stenosis at the ostium of right coronary artery. After percutaneous coronary intervention (PCI), intravascular ultrasound (IVUS) images detected thrombus within the stent located in the native sinus, which could not find during preprocedural IVUS. After the PCI, we added warfarin to single antiplatelet therapy as antithrombotic therapy to suppress the thrombus within the native sinus of Valsalva (SOV). After a year of this emergent PCI, she had no symptoms and no rehospitalization.

    Conclusion: We experienced a case of delayed coronary obstruction due to a thrombus of the native SOV after TAVI using a self-expandable valve, confirmed by multi-imaging modalities.

  • 山本 貞, 杉渕 智子, 青木 文彦, 木谷 信行
    医療
    1969年 23 巻 4 号 502-509
    発行日: 1969年
    公開日: 2011/10/19
    ジャーナル フリー
    Clinical and experimental effect of Protoporphylin-Natrium (PPN) on liver diseases were discussed:
    1) 11 cases of acute hepatitis, 4 cases of serum hepatitis and 2 cases of liver cirrhosis were treated by PPN (0.6-1.0mg/kg/day for 30-180 days). All of these cases were below the age of 13. Icteric index returned to normal within 1-2 weeks in acute hepatitis, 2-3 weeks in serum hepatitis and 8-15 weeks in liver cirrhosis respectively. S-GOT and S-GPT level tended to decrease to normal value within 3 weeks in acute hepatitis, 3-4 weeks in serum hepatitis and 19-26 weeks in liver cirrhosis, Other laboratory data including total protein, total cholesterol and alkaline phosphatase level in serum revealed indefinite results.
    2) By administration of PPN (0.6-1.0mg/kg/day for 8-29 days) to 10 cases of neonatal hyperbilirubinemia, serum bilirubin level decreased to normal within 3-6 days.
    3) In the cases of rabbit which was treated by ligation of the common bile duct previously, PPN was found to protect liver damage remarkably.
  • Takafumi MAJIMA, Kentaro DOI, Yasato KOMATSU, Hiroshi ITOH, Atsushi FUKAO, Michika SHIGEMOTO, Chieko TAKAGI, Jerry CORNERS, Naomi MIZUTA, Ryohei KATO, Kazuwa NAKAO
    Endocrine Journal
    2005年 52 巻 3 号 309-316
    発行日: 2005年
    公開日: 2005/07/06
    ジャーナル フリー
    A 59-year-old woman with papillary thyroid carcinoma inside of an autonomously functioning thyroid nodule is described in this report. The patient was referred to our clinic because of rapid weight loss and swelling on the left side of the neck. Ultrasonography of the thyroid demonstrated a nonhomogeneous nodule in the lower part of an enlarged left lobe. Both 99mTc and 123I thyroid scintigraphic imaging showed a hot area corresponding to the nodule with lower uptake in the remaining thyroid tissue. Histopathological examination of the nodule revealed papillary adenocarcinoma, and the immunohistochemistry proved weak but positive staining for triiodothyronine and thyroxine. Based on these findings, the nodule was diagnosed as a functioning papillary adenocarcinoma. Although thyroid carcinoma manifesting as a hot nodule on the radionuclide isotope scan is an extremely rare occurrence, the current case is clinically important because it suggests that the diagnosis of a hot nodule cannot always rule out thyroid carcinoma in the nodule, and that even a hot nodule requires careful management so that the malignancy is not overlooked.
  • 家兎Galactosamine肝不全に対するHeparin・Steroid投与の影響
    福井 博, 植村 正人, 山田 拓司, 松井 勉, 松村 雅彦, 松本 元嗣, 喜多 公雄, 伊藤 秀次, 花田 一宏, 田村 雅宥, 辻井 正, 松森 武
    肝臓
    1981年 22 巻 9 号 1239-1247
    発行日: 1981/09/25
    公開日: 2010/01/19
    ジャーナル フリー
    D-galactosamine HCI (Gal)投与家兎急性肝不全モデルを用い,heparin, steroid投与の影響について,血液凝固・線溶動態の面から検討を加えた.Gal 1g/kg静注後,家兎は急性肝不全のため34.2±15.1時間(平均±SD)で死亡したが,凝血学的・組織学的に高率なDICの合併が確認された.heparin併用(Gal注直後より2,000IU/24時間持続投与)およびsteroid併用(Gal注直後よりprednisolone 4mg/kg/24時間持続投与)により,トランスアミナーゼ上昇がやや抑制され,平均生存期間が延長したが,とくにheparin併用時にこの延長(54.0±6.4時間)は有意(p<0.005)であった.heparinは凝固低下,線溶充進をきたし,DIC発現を抑制したのに対して,steroidは二次線溶を抑制し,微小血栓合併率を増加させた.急性肝不全に対するsteroid投与はDICを誘発し,致命的な合併症を惹起する可能性があることが示唆され,その使用には慎重を期す必要がある.
  • Hirotaka Kawauchi, Yuya Mitsuhashi, Shin Nakamura, Risa Ogawa, Tomonori Miyabe, Ken Kato, Hiroyuki Tanaka
    Internal Medicine
    2022年 61 巻 17 号 2625-2629
    発行日: 2022/09/01
    公開日: 2022/09/01
    [早期公開] 公開日: 2022/06/21
    ジャーナル オープンアクセス

    Myocarditis is being increasingly reported as a rare complication of coronavirus disease 2019 (COVID-19) mRNA vaccines. We herein report a case of myocarditis following COVID-19 mRNA vaccination in a man. Cardiac magnetic resonance imaging (CMRI) revealed an area of high signal intensity on short T1 inversion recovery (STIR) and late gadolinium enhancement (LGE), which are characteristic of myocarditis. Follow-up CMRI performed six months later revealed improvement in the myocardial edema and LGE findings. CMRI is a useful non-invasive imaging modality for making an initial diagnosis as well as for follow-up in cases of myocarditis after COVID-19 mRNA vaccination.

  • Md. Taurhedul AZAM, Donghyuk KANG, Hiroyuki HIRAHARA, Kazuhisa MURATA, Yasufumi SHIMOTSUKASA
    Journal of Fluid Science and Technology
    2019年 14 巻 2 号 JFST0010
    発行日: 2019年
    公開日: 2019/10/24
    ジャーナル フリー

    The flow characteristics in a centrifugal bladeless mixer were investigated by using particle image velocimetry (PIV) and large eddy simulation (LES). The numerical result is compared with experimental one in terms of the phase-averaged velocities in radial and tangential directions. The result was analyzed by comparing with that of a conventional flat-blade mixer. A spirally structured vortex tube pair was observed around the centrifugal bladeless rotor. In a vertical cross-section of the spirally structured vortex tube pair, a zigzag street of counter-rotating vortices like a reverse von Kármán vortex street was formed. It was found that the rotating jet flow was enhanced by the reverse von Kármán vortex street of the spirally structured vortex tube pair. Furthermore, the sustained rotating jet flow constructed a couple of large toroidal structured vortex tube near the tank wall. The large toroidal structured vortex caused a wider circulation in the stirred tank, which was advantage to stir the fluids over the whole field.

  • Takehiko TAKAHASHI, Osamu YAMAMOTO
    Journal of The Electrochemical Society of Japan
    1966年 34 巻 4 号 211-215
    発行日: 1966年
    公開日: 2020/09/28
    ジャーナル フリー
  • 増田 義徳, 渡辺 元雄, 高橋 秀二, 中元 藤茂
    産業医学
    1959年 1 巻 2 号 123-128
    発行日: 1959年
    公開日: 2008/04/14
    ジャーナル フリー
    A series of experiments on the chronic CCl4 poisoning was performed for the purpose of determining the minimum toxic does for hematological changes of the rabbit. Twenty rabbits were divided into five groups, which were administered by subcutaneous routes in the respective doses of 0, 0.0075, 0.0015, 0.0225 and 0.03 cc CCl4 per kg. every other day for three months. For small doses of CCl4, dilution with olive oil was carried out. Hematological observations were made every eight days with regard to the following items ; body weight, erythrocytes, leucocytes, reticulocytes, hemoglobin contents, and iron amounts in the serum and organs. The results obtained were as follows: 1. The decrease of the body weight occured in three groups given in does more than 0.015 cc per kg. 2. In animals which were given more amount of CCl4 than 0.015 cc per kg., the increase in red cell count, hemoglobin content and serum iron concentration was found but other groups did not show any change. 3. In the beginning of the experiment, all groups of animal appeared to increase in leucocyte counts and reticulocyte counts but the increase was not significant statistically. 4. The iron contents of the liver of the animals administered with relatively larger CCl4 amounts were higher, but the relationship was reverse in the kidney. 5. On the basis of these experiments, it was concluded that the minimum toxic doses of CCl4 for hematological changes by subcutaneous injection every other day to rabbits is between 0.0075 cc and 0.00 cc CCl4 per kg. body weight.
  • Kazuoki Dai, Nobuo Shiode, Yukiko Nakano
    Circulation Journal
    2022年 86 巻 4 号 609-610
    発行日: 2022/03/25
    公開日: 2022/03/25
    [早期公開] 公開日: 2022/02/17
    ジャーナル オープンアクセス HTML
  • Kensaku Nishihira, Kinta Hatakeyama, Yoshisato Shibata, Kazuo Kitamura, Yujiro Asada
    Circulation Journal
    2013年 77 巻 5 号 1275-1280
    発行日: 2013年
    公開日: 2013/04/25
    [早期公開] 公開日: 2013/02/02
    ジャーナル フリー
    Background: Thrombus propagation on disrupted atherosclerotic plaque leads to acute myocardial infarction (AMI). Recent studies have shown that the histopathology of the coronary thrombus is associated with myocardial reperfusion, ST-segment recovery, distal embolization and long-term mortality in patients with AMI. Therefore, we investigated the histopathologic characteristics of material aspirated during percutaneous coronary intervention (PCI) in patients with AMI, and assessed whether the histologic findings are related to in-hospital mortality. Methods and Results: In this prospective single-center registry, coronary materials were obtained during PCI from 264 AMI patients within 24h of the onset of anginal symptoms. Organized thrombus, calcification and plaque components in the aspirated material were morphologically assessed. In-hospital deaths occurred in 17 (6%) patients. Organized thrombi were found in 91 (34%) of 264 patients, calcification was identified in 44 (17%) and plaque components in 117 (44%) patients. Rates of in-hospital all-cause mortality were significantly higher among patients with than without organized thrombus (P<0.05). Multivariate analysis also identified organized thrombus as an independent predictor of in-hospital death, as well as age, a history of myocardial infarction and the presence of shock (P<0.05). In contrast, calcification and plaque components were not significantly associated with in-hospital mortality. Conclusions: Our results suggest that organized thrombus in aspirated coronary material is an independent predictor of in-hospital mortality of patients with AMI.  (Circ J 2013; 77: 1275–1280)
  • 第3編 実験的肝障碍時に於ける門脈圧及び肝内血管に及ぼす副腎皮質Homrone, その外二,三の薬剤の影響に就いて
    佐藤 三雄
    岡山医学会雑誌
    1959年 71 巻 7-2 号 4335-4344
    発行日: 1959/07/10
    公開日: 2009/03/30
    ジャーナル フリー
    In observing the influences of injections of DOCA, cortisone, ACTH, and droplet intravenous injection of sugar-regulating agent on the changes of blood pressures in closed hepatic venous capillaries as well as on the intrahepatic portal veins, in the mature dogs with acute hepatic disturbances induced by administering allyl formate, the author obtained the following results.
    1. After intramuscular injections of 2 mg/kg DOCA, 20 mg/kg cortisone, 2 IU/kg ACTH, or droplet intravenous injection of 50 cc/kg sugar regulating agent, each into normal mature dogs, there can be observed no influences on the pressures of portal veins and closed hepatic venous capillaries as well as on picture of intrahepatic capillaries.
    2. When 2 mg/kg DOCA, 20 mg/kg cortisone, or 2 IU/kg ACTH is injected intramuscularly into the dogs given a subcutaneous injection of 0.04 cc/kg allyl formate one hour previously, the rising tendency of the portal pressure and closed hepatic venous capillary pressures is inhibited, and moreover, the roentgenogram of intrahepatic capillaries reveals a slight improvement in the direction of blood vessels, especially the shadow of peripheral capillaries. Furthermore, DOCA shows the most prompt and effective action, while the effect of ACTH appears slightly later.
    3. When influences of droplet intravenous injection of 50 cc/kg sugar regulating agent on the portal pressure, closed hepatic venous capillaries pressues and intrahepatic capillary picture are similarly observed, no improvement can at all be recognized in the hepatic circulatory disturbances in allyl formate poisoning.
  • 加納 隆, 小島 孝雄, 高橋 健, 杉原 潤一, 冨田 栄一, 武藤 泰敏
    肝臓
    1986年 27 巻 2 号 165-173
    発行日: 1986/02/25
    公開日: 2009/07/09
    ジャーナル フリー
    ステロイド療法を施行した急性肝不全(AHF)5症例を対象とし,早朝空腹時ステロイド投与前における血中prednisolone (PSL)および内因性hydrocortisone (Fk)の逐日的変動を測定し臨床経過と対比して検討した.その結果,全例,昏睡極期に一致してPSLの著明な代謝遅延が認められ,翌朝時においても大量のPSLが血中に残存した.しかし,生存例では脳症および肝予備能の改善に相応してPSLの代謝は速やかとなりPSLの血中への残存性は消失し,一方,脳症が悪化し死亡した症例ではPSLの代謝遅延は持続し,かつ重篤な副作用が認められた.以上より,AHFのステロイド療法における投与量,投与方法および投与期間の決定は臨床像とくに昏睡度および肝予備能に留意して行なうべきと考えられ,これらの決定に対し,AHFにおける肝ミクロゾーム機能の変動を良好に反映すると考えられる血中ステロイドの経時的測定は有用な科学的指標になり得ると考えられた.
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