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The penetration depth of atomic radicals in tubes with catalytic surface properties

Plasma Science and Technology 2024年第7期26卷 157-164页

作者： domen paul Miran MOZETIC Rok ZAPLOTNIK Alenka VESEL Gregor PRIMC Denis DONLAGIC Jozef Stefan Institute Jamova Cesta 39Ljubljana 1000Slovenia Jozef Stefan International Postgraduate School Jamova Cesta 39Ljubljana 1000Slovenia Faculty of Electrical Engineering and Computer Science University of MariborKoroska Cesta 46Maribor 2000Slovenia

Catalysis of molecular radicals is often performed in interesting experimental *** possible configuration is tubular *** radicals are introduced into the tubes on one side,and stable molecules are exhausted on the other *** penetration depth of radicals depends on numerous parameters,so it is not always feasible to calculate *** article presents systematic measurements of the penetration depth of oxygen atoms along tubes made from nickel,cobalt,and *** source of O atoms was a surfatron-type microwave *** initial density of O atoms depended on the gas flow and was 0.7×10^(21)m^(-3),2.4×10^(21)m^(-3),and 4.2×10^(21)m^(-3)at the flow rates of 50,300,and 600 sccm,and pressures of 10,35,and 60 Pa,*** gas temperature remained at room temperature throughout the *** dissociation fraction decreased exponentially along the length of the tubes in all *** penetration depths for well-oxidized nickel were 1.2,1.7,and 2.4 cm,*** cobalt,they were slightly lower at 1.0,1.3,and 1.6 cm,respectively,while for copper,they were 1.1,1.3,and 1.7 cm,*** results were explained by gas dynamics and heterogeneous surface *** data are useful in any attempt to estimate the loss of molecular fragments along tubes,which serve as catalysts for the association of various radicals to stable molecules.

关键词： oxygen plasma penetration depth catalysis heterogeneous surface recombination atom loss

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Pharmacology of cancer chemotherapy drugs for hyperthermic intraperitoneal peroperative chemotherapy in epithelial ovarian cancer

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World Journal of Obstetrics and Gynecology 2013年第4期2卷 143-152页

作者： Kurt Van der Speeten Anthony O Stuart paul H Sugarbaker Department of Surgical Oncology Ziekenhuis Oost-Limburg 3600 Genk Belgium University Hasselt Life Sciences Faculty Oncology Research Cluster 3000 Hasselt Belgium Washington Cancer Institute Washington Hospital Center Washington DC 20010United States

The peritoneal parietal and visceral surfaces of the abdomen and pelvis are an important anatomic site for the dissemination of epithelial ovarian cancer(EOC). The transcoelomic spread of cancer cells gives rise to peritoneal carcinomatosis(PC) which, without special treatments, is a fatal manifestation of EOC. In order to control PC cytoreductive surgery to remove macroscopic disease is combined with perioperative intraperitoneal(IP) and perioperative intravenous chemotherapy to eradicate microscopic residual disease. Chemotherapy agents are selected to be administered by the IP or intravenous route based on their pharmacologic properties. A peritoneal-plasma barrier which retards the clearance of high molecular weight chemotherapy from the peritoneal cavity results in a large exposure of small cancer nodules on abdominal and pelvic surfaces. Tissue penetration is facilitated by moderate hyperthermia(41-42 ℃) of the IP chemotherapy solution. Timing of the chemotherapy as a planned part of the surgical procedure to maximize expo-sure of all peritoneal surfaces is crucial to success.

关键词： Intraperitoneal chemotherapy Epithelial ovarian cancer Ifosfamide Cisplatin Carboplatin Taxanes Pharmacokinetics Pharmacodynamics

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