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Dynamic PIV Measurement of a Compressible Flow Issuing from an Airbag Inflator Nozzle

Journal of Thermal Science 2006年第4期15卷 377-381页

作者： SangJoonLee YoungGilJang seokkim Chang Soo Kim Department of Mechanical Engineering POSTECHSan 31Hyoja DongPohang790-784Korea Safety System R&D Department Hyundai MOBIS80-10Mabook-RiGuseong-EupYongin-ShiGyunggi-Do449-910Korea

Among many equipment for passenger safety, the air bag system is the most fundamental and effective device for an automobile. The inflator housing is a main part of the curtain-type air bag system, which supplies high-pressure gases in pumping up the air bag-curtain which is increasingly being adapted in deluxe cars for protecting passengers from the danger of side clash. However, flow information on the inflator housing is very limited. In this study, we measure the instantaneous velocity fields of a high-speed compressible flow issuing from the exit nozzle of an inflator housing using a dynamic PIV system. From the velocity field data measured at a high frame-rate, we evaluate the variation of the mass flow rate with time. The dynamic PIV system consists of a high-repetition Nd：YLF laser, a high-speed CMOS camera, and a delay generator. The flow images are taken at 4000 fps with synchronization of the trigger signal for inflator ignition. From the instantaneous velocity field data of flow ejecting from the airbag inflator housing at the initial stage, we can see a flow pattern of broken shock wave front and its downward propagation. The flow ejecting from the inflator housing is found to have very high velocity fluctuations, with the maximum velocity at about 700 m/s. The time duration of the high-speed flow is very short, and there is no perceptible flow after 100 ms.

关键词： Airbag inflator PIV automobile.

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Pilot study of postoperative adjuvant chemoradiation for advanced gastric cancer:Adjuvant 5-FU/cisplatin and chemoradiation with capecitabine

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World Journal of Gastroenterology 2006年第4期12卷 603-607页

作者： Hyung-SikLee YoungminChoi Won-JooHur Hyo-JinKim Hyuk-ChanKwon Sung-HyunKim Jae-seokkim Jong-Hoon Lee Ghap-JoongJung Min-ChanKim Department of Radiation Oncology Dong-A University College of MedicineBusanSouth Korea Department of Medical Oncology Dong-A Universityéollege of MedicineBusanSouth Korea Department of Gastroenterology Dong-A University College of MedicineBusanSouth Korea Department of Surgery Dong-A University College of MedicmeBusanSouth Korea

AIM： To evaluate the efficacy and toxicity of postoperative chemoradiation using FP chemotherapy and oral capecitabine during radiation for advanced gastric cancer following curative resection. METHODS： Thirty-one patients who had underwent a potentially curative resection for Stage Ⅲ and Ⅳ （M0） gastric cancer were enrolled. Therapy consists of one cycle of FP （continuous infusion of 5-FU 1000 mg/m^2 on d 1 to 5 and cisplatin 60 mg/m^2 on d 1） followed by 4500 cGy （180 cGy/d） with capecitabine （1650 mg/m daily throughout radiotherapy）. Four wk after completion of the radiotherapy, patients received three additional cycles of FP every three wk. The median follow-up duration was 22.2 mo. RESULTS： The 3-year disease free and overall survival in this study were 82.7% and 83.4%, respectively. Four patients （12.9%） showed relapse during follow-up. Eight patients did not complete all planned adjuvant therapy. Grade 3/4 toxicities included neutropenia in 50.2%, anemia in 12.9%, thrombocytopenia in 3.2% and nausea/ vomiting in 3.2%. Neither grade 3/4 hand foot syndrome nor treatment related febrile neutropenia or death were observed. CONCLUSION： These preliminary results suggest that this postoperative adjuvant chemoradiation regimen of FP before and after capecitabine and concurrent radiotherapy appears well tolerated and offers a comparable toxicity profile to the chemoradiation regimen utilized in INTo0116. This treatment modality allowed successful Ioco-regional control rate and 3-year overall survival.

关键词： Gastric cancer Postoperative Adjuvant chemotherapy Chemoradiation

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