• 제목/요약/키워드: Trap Door

검색결과 25건 처리시간 0.022초

동절기 대파 재배지 파총채벌레 발생 보고 (Report on an Outbreak of the Onion Thrips, Thrips tabaci, Infesting Welsh Onion during Winter Season)

  • 김철영;최두열;김용균
    • 한국응용곤충학회지
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    • 제60권2호
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    • pp.247-254
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    • 2021
  • 동절기(1 ~ 2월) 시설재배지 대파에 파총채벌레(Thrips tabaci)가 발생하였다. 파총채벌레의 동정은 트랩에 포획된 개체의 DNA 바코드를 중심으로 확인하였다. 주별 파총채벌레 발생은 끈끈이판 하나당 약 240 ~ 700 마리의 포획 밀도를 나타냈다. 포획 효율은 트랩 색상에 따라 차이를 보여 황색이 청색 트랩에 보다 우수하였다. 또한 대부분(90% 이상) 대파는 이들 파총채벌레의 식흔을 보였다. 이러한 파총채벌레 발생은 특정 비닐하우스에 국한되었다. 이러한 국부적 파총채벌레의 발생 양상을 분석하고자 이들 행동을 실내외에서 관찰하였다. 실내 분석은 약 1.5 mm 정도 몸길이의 성충이 약 5 cm 까지 도약하였다. 야외에서는 이들 성충이 시설재배지 최대 높이인 2 m 까지 비행 행동을 보였다. 이러한 비행 행동은 인근(2 m 이내) 시설재배지까지 이동이 가능할 것으로 추정되었으나 실제로 전파되지 않은 것은 야외 저온 조건이 물리적 장벽을 제공하여 준 것으로 해석되었다. 따라서 겨울기간 파총채벌레의 대발생은 특정 소지역에 국한되었다.

신경섬유종증을 동반한 신경성 육종과 흉강내 뇌척수막류의 치험 1례 (Surgical Treatment of "Dumb-bell" Neurosarcoma and Intrathoracic Meningocele Associated with Von Recklinghausen`s Disease -A case report-)

  • 최순호
    • Journal of Chest Surgery
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    • 제28권10호
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    • pp.946-950
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    • 1995
  • Neurosarcoma is relatively rare, but is seen frequently in association with stigmata of neurofibromatosis ie., Cafe au lait pigmentation and cutaneous neurofibromatosis. Both advanced age and association with neurofibromatosis increase the likelihood of malignant degeneration to neurosarcoma. It also may be dumb bell-shaped with intraspinal extension. Thoracic meningocele is rare and represents a protrusion of the dural sac through an abnormally large or malformed intervertebral foramen. The patient is usually asymptomatic, with evidence of paravertebral mass on the chest rentgenogram. In one operation we removed a "Dumb-bell" neurosarcoma and intrathoracic meningocele in a 52 year old woman using a cervical laminectomy with a trap-door incision. She was discharged at 17 days after the operation with a sequelae of excision of nerve roots C8 and T1. Postoperative radiation therapy was performed during the follow-up period.up period.

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치주판막술시 여분의 결합조직을 이용한 치은퇴축의 회복에 대한 증례보고 (CASE REPORT OF ROOT COVERAGE VIA CONNECTIVE TISSUE DURING UNDISPLACED FLAP OPERATION)

  • 임성빈;정진형;이재현
    • 대한심미치과학회지
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    • 제4권1호
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    • pp.1-5
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    • 1995
  • A mucogingival grafting procedure has been developed to cover denuded root surfaces. This procedures need to connective tissue, so many clinician open the trap door to palatal side of the patient. In this study, where palatal pocketing was present, pocket elimination was performed, and the tissue normally discarded after thinning of the palatal flap was used as a grafting material. The esthetics in recipient site, both color match and tissue contour were acceptable to the patient in this case.

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A 69-year-old Woman with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery: Surgical Repair Using a Trap-door Flap

  • Lim, Ju-Yong;Chung, Cheol-Hyun;Ma, Dae-Sung;Lee, Seung-Hyun
    • Journal of Chest Surgery
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    • 제44권5호
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    • pp.358-360
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    • 2011
  • We present a patient with anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA), which was diagnosed and corrected in her 60 s. The patient is the oldest documented survivor of ALCAPA who underwent a surgical repair. ALCAPA should be corrected surgically to restore the dual coronary system at any age and this case shows that the surgical procedure may be performed safely even in an elderly patient.

Approach for naso-orbito-ethmoidal fracture

  • Ha, Young In;Kim, Sang Hun;Park, Eun Soo;Kim, Yong Bae
    • 대한두개안면성형외과학회지
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    • 제20권4호
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    • pp.219-222
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    • 2019
  • The purpose of this study is to discuss several approaches to addressing naso-orbito-ethmoidal (NOE) fracture. Orbital fracture, especially infraorbital fracture, can be treated through the transconjunctival approach easily. However, in more severe cases, for example, fracture extending to the medial orbital wall or zygomatico-frontal suture line, only transconjunctival incision is insufficient to secure good surgical field. And, it also has risk of tearing the conjunctiva, which could injure the lacrimal duct. Also, in most complex types of facial fracture such as NOE fracture or panfacial fracture, destruction of the structure often occurs, for example, trap-door deformity; a fracture of orbital floor where the inferiorly displaced blowout facture recoils to its original position, or vertical folding deformity; fractured fragments are displaced under the other fragments, causing multiple-packed layers of bone.

대혈관 변위를 동반한 선천성 복잡심기형에 대한 동맥전환술 (Arterial switch operation for the complex congenital heart anomalies with malposition of the great arteries)

  • 이정렬
    • Journal of Chest Surgery
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    • 제26권1호
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    • pp.36-43
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    • 1993
  • Sixty four children [aged 2 days to 9 years] , 58 with complete transposition of the great arteries, 5 with Taussig-Bing double outlet right ventricle, and 1 with double outlet left ventricle plus left ventricular type single ventricle, have undergone anatomic correction from November 1987 to August 1992. Eleven underwent previous operations: pulmonary artery banding[7], modified Blalock-Taussig shunt[2], coarctoplasty[2], aortic arch reconstruction[1] . Of 58 patients with TGA, Type A coronary arteries of Yacoub were seen in 50[86%]. U-shaped coroanry arterial flaps were transfered to the neoaorta using trap door technique, and neopulmonary arterial tract was constructed using glutaraldehyde fixed autopericardium with Lecompte maneuver. There were 18 hospital deaths [28.1%] with no late mortality. Mean follow-up of 20.4\ulcorner11.9 months were achieved in all survivors. Postoperative cardiac catheterizations were done in 14 cases. Mean pressure gradients of pulmonary and aortic outflow tract were 15.0 $\pm$2.6 and 4.2$\pm$1.4mmHg, mild aortic valve insufficiencies were found in 2, and mean cardiac index was 5.18$\pm$0.19 L/min/M2. We conclude that we should continue anatomic correction for the complex congenital heart anomalies with the malposition of the great arteries because myocardial function seems to be well preserved, though we are still on the learning curve.

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Lateral nasal advancement flap for reconstruction of the nasal sidewall and dorsum

  • Ogawa, Yutaka;Ogawa, Yasuko
    • Archives of Plastic Surgery
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    • 제47권1호
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    • pp.102-105
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    • 2020
  • Malignant skin tumors and precancerous lesions have a predilection to be located in the nasal dorsum or sidewall. Although invasive reconstructions have been presented, no simple and suitable method has yet been reported for this area. The flap presented herein, named the lateral nasal advancement flap, is designed on the adjacent lateral region of the sidewall or nasal dorsum and advanced in the medial direction. Two Burow's triangles are removed in the upper and lower portions of the flap: the upper triangle along the nasofacial sulcus and the lower triangle along the nasofacial sulcus and/or the alar groove. Excellent results were obtained in the two clinical cases described in this report. Neither a trap door deformity nor dog-ears developed in either case. The postsurgical scars followed the aesthetic lines and became inconspicuous. A distinct angle was formed in the nasofacial sulcus without anchor sutures. This surgical procedure is technically simple and is performed under local anesthesia. Although the flap is a cheek-based advancement flap, postsurgical scars do not remain in the cheek; instead, they are located in the nasofacial sulcus and alar groove. The lateral nasal advancement flap is recommended for reconstruction of the nasal sidewall and dorsum.

Effectiveness of Computed Tomography for Blow-out Fracture

  • Rhee, Seung-Hyun;Kim, Tae-Seup;Song, Jae-Min;Shin, Sang-Hoon;Lee, Jae-Yeol
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제36권6호
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    • pp.273-279
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    • 2014
  • Purpose: This study assessed the association between eye symptoms (enophthalmos or diplopia) and site of damage, volume, deviated inferior rectus muscle (IRM) and type of fracture with computed tomography (CT). The intent is to anticipate the prognosis of orbital trauma at initial diagnosis. Methods: Forty-five patients were diagnosed with fractures of the inferior wall of one orbit. Fracture area, volume of displaced tissue, deviated IRM, and type of fracture were evaluated from coronal CT by one investigator. The association of those variables with the occurrence of eye symptoms (diplopia and enophthalmos) was assessed. Results: Of 45 patients, 27 were symptom-free (Group A) and 18 had symptoms (Group B) of enophthalmos and/or diplopia. In Group B, 12 had diplopia, one was enophthalmos, and five had both. By CT measurement, group A mean area was $192.6mm^2$ and the mean volume was $673.2mm^3$. Group B area was $316.2mm^2$ and volume was $1,710.6mm^3$. The volume was more influential on symptom occurrence. Each patient was categorized into four grades depending on the location of IRM. Symptom occurrence and higher grade were associated. Twenty-six patients had trap-door fracture (one side, attached to the fracture), and 19 had punched-out fracture (both sides detached). The punched-out fracture was more strongly associated with symptoms and had statistically significantly higher area and volume. Conclusion: In orbital trauma, measurement of fracture area and volume, evaluation of the deviated IRM and classification of the fracture type by coronal CT can effectively predict prognosis and surgical indication.

불연속면을 포함한 사질토 지반에서 터널 굴착에 따른 하중전이 (Load transfer mechanism due to tunnel excavation in the jointed sandy ground)

  • 이상덕;김양운
    • 한국터널지하공간학회 논문집
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    • 제5권3호
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    • pp.217-226
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    • 2003
  • 본 연구에서는 활동성 불연속면을 포함하고 있는 모래지반에 터널을 굴착할 때에 터널 주변의 원지반에 발생되는 아칭을 규명하기 위하여 터널 상부의 토피고와 불연속면의 위치 및 각도를 변화시켜가며 모형실험을 수행하였다. 모형실험기의 중앙에 수직으로 이동이 가능한 가동판을 설치하고 모래지반 조성 후에 가동판을 강하시켜서 터널 굴착을 모형화 하였고, 토조의 바닥판에 로드셀을 부착하여, 아칭에 의한 하중전이를 측정하였다. 굴착에 의한 지표면의 침하거동은 변위측정센서를 지표면에 설치하여 측정하였으며, 실험 중에 연속사진촬영을 실시하고 지반조성시 일정한 간격으로 설치한 측점의 움직임을 관측하여 굴착에 의한 지반이완형태를 측정하였다. 본 연구 결과 터널굴착시 불연속면의 각도와 위치, 그리고 터널 상부의 토피고에 따라서 하중전이 형태와 이완영역이 변화하는 것을 확인하였으며 지반의 이완영역이 터널과 인접해 있는 불연속면을 따라 주변지반으로 점차 확대되어 가는 것을 알 수 있었다.

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지하탄약고의 설계요소 및 폭발안전 연구 (Design consideration and explosion safety of underground ammunition storage facilities)

  • 김운영;이명재;김민석;김준엽;주효준
    • 한국터널지하공간학회 논문집
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    • 제5권1호
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    • pp.55-70
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    • 2003
  • 지상형 탄약저장시설은 폭발시 인명과 재산의 피해가 크고 외부공격에 대하여 취약하므로 안전성, 부지확보 및 유지관리에서 유리한 지하탄약고의 개발이 절실하다. 본 연구에서는 폭발시 안전성 및 수불장비의 동선을 고려한 지하탄약고 시설배치와 방폭시설의 국내 설계사례를 소개하였다. ${\bigcirc}{\bigcirc}$지하탄약고는 경암지역에 불연속면의 영향이 적도록 주응력방향과 거의 평행하게 3개소의 저장격실이 배치되도록 설계되었다. 또한 국방부 폭발안전기준을 만족하는 안전거리를 확보하였고, 탄약 수불장비의 동선 시뮬레이션을 통해 시설배치의 적절성을 검증하였다. 방폭시설은 임의 저장격실의 우발적 폭발시 발생하는 최대 폭풍압을 산정하여 연쇄폭발이 발생하지 않도록 인접격실의 보호를 위한 방폭문 및 방폭밸브 등을 설계하였고. 폭풍압의 저감을 위한 병목장치, 파편함정 등의 시설은 구조해석을 통해 국방부 폭발물안전기준을 만족하도록 규격을 결정하였다.

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