• Anatomy and Cell Biology
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• 제51권4호
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• pp.232-235
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• 2018

Portal vein provides about three-fourths of liver's blood supply. Portal vein is formed behind the neck of pancreas, at the level of the second lumbar vertebra and formed from the convergence of superior mesenteric and splenic veins. The purpose of this study is to review the normal distribution and variation, morphometry of portal vein and its branches for their implication in liver surgery and preoperative portal vein embolization. It is also helpful for radiologists while performing radiological procedures. A total of fresh 40 livers with intact splenic and superior mesenteric vein were collected from the mortuary of Forensic Department, JSS Medical College and Mysuru Medical College. The silicone gel was injected into the portal vein and different segments were identified and portal vein variants were noted. The morphometry of portal vein was measured by using digital sliding calipers. The different types of portal vein segmental variants were observed. The present study showed predominant type I in 90% cases, type II 7.5% cases, and type III 2.5% cases. Mean and standard deviation (SD) of length of right portal vein among males and females were $2.096{\pm}0.602cm$ and $1.706{\pm}0.297cm$, respectively. Mean and SD of length of left portal vein among males and females were $3.450{\pm}0.661cm$ and $3.075{\pm}0.632cm$, respectively. The difference in the Mean among the males and females with respect to length of right portal vein and left portal vein was found to be statistically significant (P=0.010). Prior knowledge of variations regarding the formation, termination and tributaries of portal vein are very helpful and important for surgeons to perform liver surgeries like liver transplantation, segmentectomy and for Interventional Radiologists.

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 1999년도 국제컨퍼런스 디지털컨텐츠 활용을 통한 지식경영의 확산
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• pp.331-347
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• 1999

What is Portal\ulcorner o Stage of Portal Development o The Elements of a Portal o Topplogy of Portal Landscape (omitted)

• 한국문헌정보학회지
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• 제45권3호
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• pp.27-47
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• 2011

이 연구의 목적은 도서관이 장애인 정보포털을 구축하는 데 필요한 기본적 구성요소를 파악하고, 개발 방향을 제시하는 것이다. 이를 위해 우리나라 장애인 관련 기관, 단체 104개의 웹사이트 및 국내외 장애인 정보포털 다섯개의 제공 정보를 분석하여, 장애인 정보포털 구축 시 고려할 요소를 추출 및 제안하고자 하였다. 분석 대상은 우리나라 보건복지부의 '복지로' 포털, 국립중앙도서관 디브러리의 '장애인 포털', 미국 NIDRR의 NARIC 포털, 남아프리카공화국의 National Accessibility Portal, 인도의 National Interactive Portal을 포함하였고, 이들의 목표 이용자, 주요 서비스와 자원, 주요 연계 서비스 등 특성을 살펴보았고, 도서관의 장애인 정보포털 구축 시 다음과 같은 요소가 고려되어야 할 것을 제안하였다. (1) 장애인 및 비장애인 잠재적 이용자층 고려, (2) 장애인 관심 주제 정보 제공, (3) 고품질 외부정보원 정보의 확보와 제공, (4) 장애인 이용자의 커뮤니케이션 경로 역할, (5) 웹접근성기준 반영한 인터페이스 설계.

• 대한수의학회지
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• 제38권3호
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• pp.659-663
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• 1998

Portal bood flow was measured with pulsed Doppler ultrasound in twenty anesthetized dogs. In anesthetized dogs with xylazine HCl, the average of portal blood flow velocity was reduced($11.68{\pm}1.55cm/sec$ vs. normal $16.67{\pm}1.77cm/sec$). Average portal blood flow was also decreased compared to normal($28.36{\pm}11.61ml/min/kg$ vs. normal $43.12{\pm}14.46 ml/min/kg$). And congestion index was increased($0.0368{\pm}0.0117cm{\cdot}sec$) vs. normal $0.0297{\pm}0.0062cm{\cdot}sec$). In anesthetized dogs with ketamine HCl, portal blood flow velocity was slightly increased ($22.62{\pm}2.53cm/sec$ vs. normal $16.67{\pm}1.77cm/sec$. Also mean portal blood flow was slightly increased($43.12{\pm}14.46ml/min/kg$ vs. normal $55.32{\pm}19.99ml/min/kg$). In anesthetized dogs with tiletamine and zolazepam, portal blood flow velocity and portal blood flow were unchanged.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2007년도 추계학술대회
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• pp.206-209
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• 2007

The work patterns in the organizations performing research and development projects consist of both administrative business with defined processes and knowledge-oriented research and development business with undefined or semidefined processes. This paper describes an enterprise portal model and its services aligned to research and development organization's work patterns. The proposed portal model is focused on constructing personalized workplaces providing knowledge-based services for research and development business, as well as business process management based services for administrative business. The further research will provide more concrete portal model and its applicability to research and development organization's business.

• 대한산업공학회지
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• 제28권3호
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• pp.291-301
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• 2002

In this paper, we introduce a mathematical model to analyze pricing/quality and service mix strategies for Internet Portal site. This model includes utilities and costs of each participants, i.e., user, third party provider, and portal sites. Especially, we consider portal sites that initiate their businesses by providing free services like free e-mail service or search service and providing several charged services. As the results, we can find that Portal sites should make the target of customers and focus them to maximize their profit. Portal sites should pay their marketing effort not for all customers but pertinent portions of customers. And Portal sites should make more efforts to efficiently develop and provision their services.

• Journal of Information Technology Applications and Management
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• 제9권4호
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• pp.151-164
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• 2002

This paper predicts how mobile Internet portal services will go ahead and what contents will be needed at the portal site. Mobile Internet interface needs to be concise and compressed because of the size of terminals Thus mobile internal service wants integrated portal service We study the service strategy for mobile internet portal Service according to the product life cycle Many Korean people who have used 'wired and fixed' Internet services and mobile phones want the mobile Internet portal to provide many attractive functions and high quality of service Thus we consider the current Korean mobile Internet service as the maturity phase of its life cycle The maturity phase needs the strategy of diversifying and focusing on, thus we recommend the hub portal model for Korean mobile Internet service, In this paper, we survey contents of mobile Internet portal service as a case study. With the result of the analysis, we present the promising contents as follows: video conference service, financial service, stock trading service, traffic information service, location map service, emergency rescue service, and so on.

• Journal of Yeungnam Medical Science
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• 제7권1호
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• pp.211-214
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• 1990

저자들은 최근 생후 3일된 dextrocardia와 situs inversus 및 십이지장 완전 폐색을 동반한 환아에서 십이지장 전방 문맥을 발견하였다. 이에 문헌 고찰과 함께 보고하는 바이다.

• 한국언론정보학보
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• 제46권
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• pp.177-211
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• 2009

본 연구의 목적은 포털의 언론으로서의 역할에 대한 논란을 정리해보고 포털 이용자들이 언론으로서 포털의 역할과 기능에 어떻게 인식하고 있는지를 살펴보는 것이다. 아울러 이 연구는 포털 이용자들의 뉴스이용패턴과 뉴스 댓글에 관한 인식을 분석하고자 한다. 이를 위해 주 1회 이상 포털사이트를 이용하고 있는 15세부터 45세 사이의 이용자 1,036명 을 대상으로 온라인설문조사를 실시했다. 그 결과 대부분의 포털이용자들(70.8%)은 포털이 다른 언론사처럼 언론의 역할을 한다고 생각하는 것으로 나타났다. 또한 10명 가운데 6명 가량은 포털 뉴스가 사회의 주요 이슈를 제기한다는 데 동의하고 있었다. 이러한 결과는 포털 이용자들이 언론으로서의 포털의 사회적 영향력과 책임을 중요하게 생각하고 있다는 것을 보여주고 있다. 하지만 40% 가량의 응답자들이 뉴스 댓글로 제시된 정보를 신뢰하지 않는다고 답했고, 댓글은 대부분 아르바이트생들이 쓰는 것으로 여겼다. 또한 10명 중 6명 가량은 댓글이 의도적으로 작성되고 있다고 응답했다. 따라서 포털 뉴스의 신뢰성을 확보하기 위해서는 뉴스 댓글에 대한 품질 관리가 어느 정도 필요하다고 할 수 있다. 포털을 자주 이용하는 사람일수록 포털이 편리하고 사회적 영향력이 크다고 생각함과 동시에 선정적이고 상업적인 면도 있다고 생각했다. 반면, 인터넷 이용을 많이 할수록 포털이 신속하고 편리하며 사회적 영향력이 크다고 생각하는 경향이 나타났다. 하지만 가구소득은 포털의 뉴스역할인식과 통계적으로 유의미한 상관관계가 나타나지 않았다.

• 한국간담췌외과학회지
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• 제27권4호
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• pp.366-371
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• 2023

Backgrounds/Aims: Biliary surgery in patients with extrahepatic portal vein obstruction with portal cavernoma (PC) is technically challenging, and associated with the risk of bleeding. Therefore, prior portal vein decompression is usually recommended before definitive biliary surgery. Only a few studies have so far reported the safety of isolated laparoscopic cholecystectomy. We aimed to evaluate our experience of laparoscopic cholecystectomy in patients with PC without prior portal decompression. Methods: Prospectively maintained data for patients with PC who underwent laparoscopic cholecystectomy for symptomatic gallstone disease without portal decompression were analyzed. Clinical features, imaging, intraoperative factors, conversion rate, complications of surgery, and long-term outcomes were assessed. Results: Sixteen patients underwent cholecystectomy without portal decompression from 2012 to 2021, of which interventions 14 were laparoscopic cholecystectomies. One patient required conversion (7.1%) to open surgery. Jaundice was present in 5 patients (35.7%), and underwent endoscopic stone clearance before surgery. Median intraoperative blood loss, operative time, and hospital stay were 100 mL (20-400 mL), 105 min (60-220 min), and 2 days (1-7 days), respectively. Blood transfusion was required in two patients (14.2%). Prior endoscopic or percutaneous intervention was associated with significant blood loss and prolonged intraoperative time. Conclusions: In centers with experience, prior portal decompression can be avoided in patients with PC requiring isolated cholecystectomy to treat gallstones or their complications. Laparoscopic surgery is safe and feasible for these patients, and gives excellent outcomes in the selected group.