• Title/Summary/Keyword: Stabbing system

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Structural Safety Evaluation of Stabbing System for Pre-Piling Jacket Substructure Considering Pile Construction Errors (파일의 시공오차를 고려한 스태빙시스템의 구조안전성 평가)

  • Youngcheol Oh;Jaeyong Ryoo;Daeyong Lee
    • Journal of Wind Energy
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    • v.14 no.3
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    • pp.109-119
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    • 2023
  • A structural safety evaluation was conducted for the stabbing system for the pre-piling jacket substructure currently being developed in South Korea, considering pile construction errors due to its lateral movement that may occur during construction in the ocean. Based on (1) the maximum stress generated by the stabbing system, (2) the maximum rotational displacement of the guide cone, and (3) the maximum stress generated by the horizontal hydraulic pressure cylinder, the structural safety of the stabbing system was examined under the initial loading condition and three possible load combinations during its construction. In order to evaluate the structural safety of the stabbing system, a concept of stress safety factor (= Yield stress / Max. Von-Mises stress) was used. It was found that the stabbing system considered in this study has a sufficient margin of safety.

Structural Safety Evaluation of Stabbing System for Pre-Piling Jacket Substructure under Construction (프리파일링 자켓 하부구조물용 스태빙시스템의 시공중 구조안전성 평가)

  • Youngcheol Oh;Jaeyong Ryoo;Daeyong Lee
    • Journal of Wind Energy
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    • v.13 no.3
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    • pp.79-87
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    • 2022
  • A stabbing system is an underwater jointing structure for positioning the jacket substructure for offshore wind power on top of a pile foundation that is already installed in the seabed. In this paper, the structural safety of the stabbing system currently being developed in South Korea was evaluated through finite element analysis. For this study, conformity of the finite element modeling technique for a gripper (hydraulic cylinder) was reviewed, and the structural safety of the stabbing system was evaluated based on the stress safety factor under three design load combinations (combinations of vertical, shear, and moment loads). From the analysis, it was verified that the pile foundation and the stabbing system mounted on top of it are structurally safe according to the stress safety factor, and there will be no interference between major structural components (i.e., guide cone and pile foundation) due to rotation of the guide cone at the end of the jacket leg.

The Comprehension of Herpes Zoster and The Approach of Physical Therapy (대상포진 질환에 대한 이해와 물리치료적 접근)

  • Han, Jin-Tae;Choi, Young-Won;Lee, Youn-Koung;Yuk, Goon-Chang;Kweon, Oh-Hyun
    • Journal of the Korean Society of Physical Medicine
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    • v.2 no.2
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    • pp.205-212
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    • 2007
  • Purpose : Herpes zoster is a common dermatologic disorder and is caused by reactivation of varicella zoster virus lying dormant in the ganglion of the dorsal root Methods : The aim of this study is to elucidate the clinical characteristics of herpes zoster and it's nature of pain, and is to review the method of physical therapy for pain control. Results : Herpes zoster is characterized by segmental rash, pain, and sensory symptoms, For most patients skin healing and pain resolution occur within 3-4 weeks, However, pain can continue after the rash has healed. Pain and paresthesia often the eruption of herpes zoster and vary from itching to stabbing. The preeruptive pain may simulate other diseases and may lead to misdiagnosis and misdirected interventions. Motor symptomatology is less well known and is most often related to central nervous system disease, although true lower motor neuron application is also thought to exist Subclinical motor involvement is relatively more common than clinical motor weakness and is easily detected by using electromyography. Higher incidences of herpes zoster were observed in female and in the elderly. Conclusion : The nature of pain associated with herpes zoster varied from a superficial itching to server stabbing or bursting, and paresthesia occurred most frequently. Therefore, the study of herpes zoster will be more research and comprehend, and the approach of physical therapy should be need positively.

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Difference in Management Between Native Koreans and Foreigners with Penetrating Wounds In the Emergency Room (관통상으로 응급실을 내원한 내국인과 외국인 환자의 진료의 차이)

  • Kim, Yong-Kwan;Jang, Yong-Soo;Kang, Gu-Hyun;Choi, Jung-Tae;Jeon, Hoo;Kim, Jin-Ho
    • Journal of Trauma and Injury
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    • v.23 no.2
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    • pp.102-106
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    • 2010
  • Purpose: With the increasing numbers of foreign residents in Korea, the need for an emergency medical care system for foreign patients seems to be growing. Sometimes, a foreigner admitted to an emergency room is not treated sufficiently due to the absence of insurance, facility in the Korean language, and a guardian. The management of a foreigner with trauma in the ER is difficult due to various problems such as social and economic status. The purpose of this study was to investigate the current management status of foreigners with penetrating wounds in the emergency room. Methods: This study is an analysis of 580 patients that were diagnosed with penetrating wounds in one teaching Hospital from Jan. 1, 2008 to Dec. 31, 2008. We analyzed results according to nationality, alcohol ingestion, intentional or accidental trauma, trauma mechanism, injury severity, management time in the ER, and outcome in the ER. Results: Of the total 580 patients, 486 patients (83.8%) were native Koreans and 94 patients (16.2%) were foreigners. According to the Revised Trauma Score, the average score of native Korean patients was 7.808, and the average score of foreign patients was 7.638. Of native Korean patients, 22.6% had knife wounds while 38.3% of foreign patients did. Of native Korean patients, 17.3% experienced intentional trauma while 33.0% of the foreign patients did. Of native Korean patients, 22.5% had ingested alcohol while 49.4% of the foreigners had. Of native Korean patients, 10.5% were admitted while 7.6% of the foreign patients were. Of native Korean patients, 14.2% were discharged against medical advice (DAMA), while 18.5% of foreign patients were. Of native Korean patients, 1.2% ran away while 8.7% of the foreign patients did. Conclusion: Stabbing was the most common cause of penetrating wounds in foreigner patients in this study. Intentional trauma was more common in foreigners with penetrating wounds than in native Koreans. The severity was higher in foreigners with penetrating wounds than it was in native Koreans, and patients who ran away or were discharged against medical advice were more commonly foreigners with penetrating wounds. Social insurance or policy is needed for the management of foreigners with penetrating wounds.

A Task for Listing Martial arts of 『Muyedobotongji』 on the UNESCO Representative List of Intangible Cultural Heritage of Humanity (『무예도보통지』 무예 인류무형유산 등재 과제)

  • Kwak, Nak-hyun
    • (The)Study of the Eastern Classic
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    • no.69
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    • pp.451-479
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    • 2017
  • The objective of this study is to examine the tasks for listing martial arts of "Muyedobotongji" on the UNESCO Representative List of Intangible Cultural Heritage of Humanity. The conclusions are like below. First, "Muyedobotongji" was published in 1790(14th year of King Jeongjo). The 24 martial arts of "Muyedobotongji" were basically divided into three types like stabbing, chopping & cutting, and hitting. Second, the value of martial arts of "Muyedobotongji" is highly evaluated because it has systematically put together the martial arts of three countries like Korea, China, and Japan of the 18th century, suitable for the actual status of Joseon Dynasty, in the new perspective. The value of "Muyedobotongji" as a Memory of the World is the martial arts book emphasizing the practicality, so that everyone including officers and soldiers could easily learn. Third, the procedure of registering martial arts of "Muyedobotongji" in the UNESCO Representative List of Intangible Cultural Heritage of Humanity has three stages including preparation/submission, screening, and decision, which takes two years. Especially, the screening assistance organization, as an organization under the Intangible Cultural Heritage Convention Intergovernmental Committee is composed of total six countries(one for each area) out of 24 member countries. Fourth, the tasks for listing martial arts of "Muyedobotongji" in the UNESCO Representative List of Intangible Cultural Heritage of Humanity are like following. (1) It would be necessary to conduct a total inspection of the collection of "Muyedobotongji". (2) It would be necessary to designate the martial arts of "Muyedobotongji" as the municipal/provincial/national intangible cultural heritage. (3) It would be needed to standardize the practical martial arts technique/movement of "Muyedobotongji". (4) The historical evidence of martial arts costumes/weapons of "Muyedobotongji" should be studied. (5) A committee for the registration of martial arts of "Muyedobotongji" in the UNESCO Representative List of Intangible Cultural Heritage of Humanity should be organized. (6) There should be a close cooperation system between relevant departments like the World Heritage Team of Cultural Heritage Administration and the Ministry of Foreign Affairs. (7) Domestic/foreign data related to martial arts of "Muyedobotongji" should be comprehensively collected to meet the registration standard of UNESCO. (8) The registration type of Intangible Cultural Heritage of Humanity should be prepared.

Effect of Geijibokryunghwan and each constituent herb on inhibition of platelet aggregation (계지복령환(桂枝茯笭丸) 및 그 구성약물(構成藥物)의 혈소판응집억제(血小板凝集抑制)에 관(關)한 연구(硏究))

  • Kim, Jong-Goo;Park, Sun-Dong;Park, Won-Hwan
    • The Journal of Dong Guk Oriental Medicine
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    • v.8 no.2
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    • pp.115-129
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    • 2000
  • The cause that the increase of animality fat intakes, under exercise, fatness, adding the stress, advanced age etc., the occurrence rate of the circulation system disease has been increased. And the thrombosis importantly came to the front as the risk factor of these circulation system's disease. Nowadays, the ischemic disease has especially discussed, for example the angina or myocardial infarction, originated in thrombosis that came from the platelet aggregation. In the western medicine, as the cure and prevention, using the aspirin or ticlopidine for platelet aggregation suppressant. But in the , the curing method must be used properly according to the pectoralgia or heartache's kind, state, grade. The platelet do not attache to the normal hemangioendothelial cell. But when it stimulated by endothelium peronia and so on, it attache to the injury endothelium or rise aggregation between the platelet. On this time, it secrete the platelet aggregation inducer as like ADP, thromboxane A2 from the inside of platelet. So it has first defensive function through the aggregation augment that prevent the celerity consumption of blood. But the activation of abnormal platelet occur the platelet grume and thrombogenesis. So it bring up the occlusive angiosis, so to speak, cardiovascular disease, cerebrovascular disease, arterial sclerosis. In oriental medicine, the thrombosis in the category of blood stasis and this blood stasis present the generalise or local blood circulation disturbance that generated by all kinds of pathological fact or blood stream retention accompanying with a series of syndrome. As the syndrome, stabbing pain fixed at certain region, squamous and dry skin, fullness and pain of the chest and hypochondrium, firmness and fullness of the lower abdomen, black stool, dark purple tongue or with ecchymoses and petechiae etc.. has been created. And it becomes the pathopoiesis cause that the convulsion and palpitation, severe palpitatiion, tympanites, the symtom complex with a mass or swelling in the abdomen, insanity, stricken by wind etc.. Moreover, it used the drugs for invigorating blood circulation and eliminating blood stasis or drugs for removing blood stasis for all kinds of syndrome through the blood stasis. And the drugs for activating the blood circulation, such as Salviae Radix, Angelicae Sinensis Radix, Persicae Semen, Achyranthis Radix, Cnidii Rhizoma, Carthami Flos are used for that. And it is used to the herbs of insects that has strong effect about the disintergrating blood stasis such as Hirudo, Scolopendrae Corpus, Buthus, Lumbricus etc.. On this study, It used Geijibokryunghwan(GBH) and the consisting herbs to investigate the influence of platelet aggregation about drugs that used to improvement various symptoms created by the thrombosis in oriental medicine. GBH formula has as formula recorded in the , action of 'eleminating the evil and not impairment of healthy energy' and 'promoting the flow of QI and cold and heat, so used for the expel blood stasis herbs from the ancient. Therefore we investigated the restraint effect of GBH and the consisting herbs about the platelet agregation induced to the ADP, AA or collagen. The conclusion is following. 1. When it added the aggregation inducer after that it added GBH and individual consisting herbs in the PRP, GBH showed the (+) inhibition effect on the platelet aggregation and it showed the (+) inhibition effect in the individual consisting herbs as like Paeoniae Radix and Moutan Cortex Radicis. 2. It showed the (+), (+,++) inhibition effect on the platelet aggregation in Paeoniae Radix Hoelen, Paeoniae Radix Moutan Cortex Radicis, Hoelen Moutan Cortex Radicis etc. 3. In the aggregation inhibition activating on the difference of density, GBH showed strong inhibition effect to the aggregation state induced to collagen, and it showed the inhibition effect in the individual consisting herbs as like Paeoniae Radix and Moutan Cortex Radicis about the aggregation induced by the collagen. 4. It showed the strong inhibition effect about the aggregation induced by the collagen in Paeoniae Radix Hoelen, Paeoniae Radix Moutan Cortex Radicis, Hoelen Moutan Cortex Radicis etc Like this, as confirm GBH and the individual consisting herb's inhibition effect of platelet aggregation, We considerated that GBH and the individual consisting herbs have practical applicational value of clinical trial in the thrombosis caused by platelet aggregation.

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