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검색결과 135건 처리시간 0.023초

Measurement of the radon and thoron exhalation rates from the water surface of Yixin lake

  • Jiulin Wu;Shuaibin Liu;Tao Hu;Fen Lin;Ruomei Xie;Shuai Yuan;Haibo Yi;Yixiang Mo;Jiale Sun;Linquan Cheng;Huiying Li;Zhipeng Liu;Zhongkai Fan;Yanliang Tan
    • Nuclear Engineering and Technology
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    • 제56권4호
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    • pp.1538-1543
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    • 2024
  • The importance of determining the radon exhalation rate from water surface is emphasized by the increased use of radon and its daughter products as tracers in large-scale circulation studies of the atmosphere. There were many methods to measure radon exhalation from water surface. With the development of radon exhalation rate measurement methods and instruments on the surface of the soil, the rock and building materials, so the radon exhalation rate from water surface can be more accurately measured by applying these improved methods and instruments. In this paper, a cuboid accumulation chamber surrounded by foam boards and a RAD7 were used to measure the radon exhalation rate on the water surface at three different positions by Yixin lake. Each measurement was performed 2 h. The radon exhalation rate from the water surface was about 6 × 10-3 Bq m-2s-1. The thoron exhalation rate from the water surface also can be estimated, it is about 0.16 Bq m-2s-1. These results hint that the radon transmission from the lake bottom soil to water and then into the atmosphere.

${\ll}$상한론(傷寒論)${\gg}$ 태양병(太陽病) 제강(提綱)의 침구학적(鍼灸學的) 분경(分經) 및 정증(定證)의 운용(運用) 방법론(方法論)에 관한(關) 연구(硏究) (The Study on Acupuncture Operation Method of ${\ll}$Sang Han Lun(傷寒論)${\gg}$Liu-Jing-Bian-Zheng(大經辯證) -Based on the Study of Tai-Yang-Bing(太陽病)-)

  • 백성욱;손성철;이준범;황민섭;윤종화
    • Journal of Acupuncture Research
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    • 제22권1호
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    • pp.19-27
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    • 2005
  • ${\ll}$상한론(傷寒論)${\gg}$ 태양병(太陽病) 제강(提綱)의 침구학적(鍼灸學的) 분경(分經) 및 분증(分證)의 운용(運用) 방법(方法)을 연구(硏究)한 결과(結果)는 다음과 같다. 1. ${\ll}$상한론(傷寒論)${\gg}$의 육경변증(六經辨證)은 ${\ll}$소문(素問) 열론(熱論)${\gg}$의 육경분증(六經分證)을 기본(基本)으로 하여 계승(繼承)하여 발전(發展) 되었다. 2. 태양병(太陽病) 제강(提綱)은 풍한(風寒), 온열(溫熱), 역병(疫病) 및 잡병(雜病)으로 인해(因) 태양경(太陽經)으로 이환(罹患)되는 증상(症狀)의 분경(分經) 정증(定證)의 강영(綱領)이 된다. 3. ${\ll}$상한론(傷寒論)${\gg}$ 주석가(注釋家)들은 태양병(太陽病)의 제강(提綱)을 인체(人體)의 피부(皮膚)를 주관(主管)하는 족태양승광경(足太陽勝胱經)의 영,(榮) 위기(衛氣)의 생리(生理) 병리적(病理的) 방면(方面)으로 해석(解釋)하였다. 4. 태양병(太陽病)의 진구(鎭灸) 치료(治療)의 혈위(穴位)는 수 (手) 족태양경(足太陽經)과 독맥(督脈)의 요혈(要穴)을 중심(中心)으로 '관기맥증(觀其脈證) 지범하역(知犯何逆) 수증취혈(隨證取穴)' 하는 변증논치(辨證論治)의 관점(觀點)으로 용침(用鍼)한다.

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서목답문의 분류체계에 관한 연구 (A study on the classification systems of the Shu-mu Da-wen)

  • 박재혁
    • 한국도서관정보학회지
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    • 제27권
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    • pp.171-209
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    • 1997
  • The results of the study can be summarized as follows. The Shu-mu Da-wen was selected and compiled by Zhang Zhi Dong at the end of Qing Dynasty as a reading list for students preparing for the state examination and for the purpose of choosing the best from several versions. Whether it was compiled and edited by Zhang was in dispute. But it is almost certain that Zhang was the main editor because Shu-mu Da-wen showed his political, educational and scientific thoughts and knowledge distinctively. The followings are characteristics of Shu-mu Da-wen being compared with Si-ku Quan-shu Zong-mu Ti-yao. 1. In Jing-bu, the Confucian classics are divided into Zheng-jing Zheng-zhu and 'Lie-chao Jing-zhu Jing-shuo Jing-ben kao-zheng. Zheng-shi lei is divided into Zheng-shi fen he ke ben and Zheng-shi zhu bu biao pu kao-zheng. It is the special sorting method to include Du-ben lei in Jing-bu and Chu xue du-ben in Bie-lu in order to provide first learners for reading order. 2. Shi-bu included Gu-shi newly and Di-li lei is divided into Gu Di-li and Jin di-li in Shi-bu. Tian-wen Suan-fa lei is divided into Zhong-fa and Xi-fa in Zi-bu. Zhang distinguished between old books and contemporary ones to find out the origin and include newly published books in the East and the West. 3. Zhou-Qin zhu-zi is newly added to Zi-pu. In Ji-pu, Bie-ji and Zong-ji are categorized according to their style and period respectively. This show the new sorting method which added classifying system concerning academic development. It is the prominent feature in the compiling system to make Bie-lu and Cong-shu respective chapters. With those characteristics the Shu-mu Da-wen had been edited and published several times. It had a wide effect not only on compiling methods of cataloging afterwards and but also on classification systems before decimal classification was introduced in China.

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Lack of Association of the Cyclooxygenase-2 Gene 8473T>C Polymorphism with Breast Cancer Risk: a Meta-analysis

  • Yang, Xi;Zhao, Fen;Li, Yue-Hua;Huang, Min;Huang, Ying;Yi, Cheng
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권22호
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    • pp.9693-9698
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    • 2014
  • Background: Associations between the 8473T>C polymorphism (rs5275) in the cyclooxygenase-2 (COX-2) gene and breast cancer (BC) risk are still inconclusive and ambiguous. The aim of this meta-analysis was to comprehensively estimate the genetic risk of 8473T>C polymorphism in the COX-2 gene for BC. Materials and Methods: We searched PubMed, Web of Science, Medline, Chinese biomedical (CBM), Weipu, China national knowledge infrastructure (CNKI), and Wanfang databases, covering all publications (last search was updated on Aug 17, 2014). Statistical analyses were performed using Revman 5.3 and STATA 10.0 software. Results: A total of 6,720 cases and 9,794 controls in 12 studies were included in this study. The results indicated no significant associations between the 8473T>C polymorphism of the COX-2 gene and BC risk for the CC+TC vs TT model (pooled odds ratio (OR)=0.97, 95% confidence interval (CI)=0.90-1.03, and p=0.29). On subgroup analysis, we also found that subdivision on ethnicity among Caucasians, Asians and others also revealed no relationship with BC susceptibility. With the study design (CC+TC vs TT), no significant associations were found in either population-based case-control studies (PCC), or hospital-based case-control studies (HCC). Conclusions: This present meta-analysis suggests that the 8473T>C polymorphism in the COX-2 gene is not a conspicuous low-penetrant risk factor for developing BC.

플라즈마 이온주입 방법에 의한 질화철 제조 및 자기적 성질 (Magnetic Properties and Production of Fe-N Phases by Plasma Source Ion Implantation)

  • 김정기;김곤호;김용현;한승희;김철성
    • 한국자기학회지
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    • 제8권1호
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    • pp.6-12
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    • 1998
  • 플라즈마 이온주입 장치를 이용하여 $\alpha$-Fe foil에 질소 이온을 주입하여 질화철 결정상을 만들었으며, 이때 질소 이온 주입시간을 15분(FEN15)과 30분 (Fe30)으로 처리되었다. 오제 전자 분광법(Auger electron spectroscopy : AES)을 이용하여 측정한 주입된 질소 이온의 깊이는 사편 FeN15와 FeN30에서 각각 12000$\AA$과 40000$\AA$으로 나타난다. 진동 시편 자력계(vibrating sample magnetometer : VSM)측정결과 as-implanted 각각의 시편은 포화자화 값이 순수한 $\alpha$-Fe foil 보다 증가되었으며, 이는 $\alpha$'-Fe8N 또는 $\alpha$'-Fe16N2의 결정구조가 그원인으로 판단된다. 따라서 본 연구는 플라즈마 이온주입 방법으로 제작된 질화철에서 부분적인 $\alpha$'또는 $\alpha$'의 졀정구조 형성 가능성을 확인할 수 있었다.

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New Insights into mTOR Signal Pathways in Ovarian-Related Diseases: Polycystic Ovary Syndrome and Ovarian Cancer

  • Liu, Ai Ling;Liao, Hong Qing;Li, Zhi Liang;Liu, Jun;Zhou, Cui Lan;Guo, Zi Fen;Xie, Hong Yan;Peng, Cui Ying
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권12호
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    • pp.5087-5094
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    • 2016
  • mTOR, the mammalian target of rapamycin, is a conserved serine/threonine kinase which belongs to the phosphatidyl-linositol kinase-related kinase (PIKK) family. It has two complexes called mTORC1 and mTORC2. It is well established that mTOR plays important roles in cell growth, proliferation and differentiation. Over-activation of the mTOR pathway is considered to have a relationship with the development of many types of diseases, including polycystic ovary syndrome (PCOS) and ovarian cancer (OC). mTOR pathway inhibitors, such as rapamycin and its derivatives, can directly or indirectly treat or relieve the symptoms of patients suffering from PCOS or OC. Moreover, mTOR inhibitors in combination with other chemical-molecular agents may have extraordinary efficacy. This paper will discuss links between mTOR signaling and PCOS and OC, and explore the mechanisms of mTOR inhibitors in treating these two diseases, with conclusions regarding the most effective therapeutic approaches.

Factors Related to Treatment Refusal in Taiwanese Cancer Patients

  • Chiang, Ting-Yu;Wang, Chao-Hui;Lin, Yu-Fen;Chou, Shu-Lan;Wang, Ching-Ting;Juang, Hsiao-Ting;Lin, Yung-Chang;Lin, Mei-Hsiang
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권8호
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    • pp.3153-3157
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    • 2015
  • Background: Incidence and mortality rates for cancer have increased dramatically in the recent 30 years in Taiwan. However, not all patients receive treatment. Treatment refusal might impair patient survival and life quality. In order to improve this situation, we proposed this study to evaluate factors that are related to refusal of treatment in cancer patients via a cancer case manager system. Materials and Methods: This study analysed data from a case management system during the period from 2010 to 2012 at a medical center in Northern Taiwan. We enrolled a total of 14,974 patients who were diagnosed with cancer. Using the PRECEDE Model as a framework, we conducted logistic regression analysis to identify independent variables that are significantly associated with refusal of therapy in cancer patients. A multivariate logistic regression model was also applied to estimate adjusted the odds ratios (ORs) with 95% confidence intervals (95%CI). Results: A total of 253 patients (1.69%) refused treatment. The multivariate logistic regression result showed that the high risk factors for refusal of treatment in cancer patient included: concerns about adverse effects (p<0.001), poor performance(p<0.001), changes in medical condition (p<0.001), timing of case manager contact (p=.026), the methods by which case manager contact patients (p<0.001) and the frequency that case managers contact patients (${\geq}10times$) (p=0.016). Conclusions: Cancer patients who refuse treatment have poor survival. The present study provides evidence of factors that are related to refusal of therapy and might be helpful for further application and improvement of cancer care.

하수오(何首烏)와 백하수오(白何首烏)의 기원과 명칭에 대한 연구 (Studies of Name and Herbal Origins of Ha-Soo-Oh)

  • 최환수;주매분;김정숙;이제현
    • 한국한의학연구원논문집
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    • 제9권1호
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    • pp.81-89
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    • 2003
  • Polygoni multiflori Radix has been used as a tonic medicine. In Korea, Cynanchi wilfordii Radix have been used too. Their names are resembled, but their plant origines are different. Polygoni multiflori Radix is called 何首烏 or 赤何首烏, and Cynanchi wilfordii Radix is 白何首烏 or 白首烏. They are suggested that they had been confused using at the early days in drug history. Polygoni multiflori Radix is enclosed in the pharmacopoeias of Korea, North Korea, Chinese and Japan. The nomina of pharmacopoeias are 赤何首烏 at North Korea and 何首烏 at other countries; Korea, Chinese and Japan. Cynanchi wilfordii Radix is just enclosed in Korea and North Korea. It means that Cynanchi wilfordii Radix has been commonly prescribed in Korea and North Korea than other countries. The nomina of pharmacopoeias are 白首烏 in Korea and 白何首烏 in North Korea. The characteristics of 何首烏 in ancient herbal records are confused of Polygoni multiflori Radix and Cynanchi wilfordii Radix. But Polygoni multiflori Radix is fixed at 何首烏 later. In Korea (south and north) Cynanchi wilfordii Radix has been recorded to using in 東醫寶鑑 that was Korea traditional Medicinal book and wrote at 1613. The 白首烏 is named in chinese about 20 century, but 白何首烏 is in korea about 19 century. In these consequences, prescription of Cynanchi wilfordii Radix in Korea is earlier than Chinese and Japan, and more common consumption too. So the nomen of 白何首烏 is better properly than 白首烏 in Korean Herbal pharmacopoeia.

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분리벽형 증류탑의 구조 설계 및 분리 특성 연구 (The Study of Structure Design for Dividing Wall Distillation Column)

  • 이승현;이문용
    • Korean Chemical Engineering Research
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    • 제45권1호
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    • pp.39-45
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    • 2007
  • 분리벽형 증류탑의 구조 설계를 위한 shortcut 방법으로서 기존의 Fenske-Underwood 식을 3기 일반 증류탑 배열에 확장 적용하는 방법을 제안하였다. 제안된 방법으로 초기 설계 단계에서 분리벽형 증류탑의 공급단 위치, 분리벽 구간, 중간 제품 생산단의 위치를 간편하면서도 효과적으로 결정할 수 있는 것을 확인하였다. 제안된 방법에 의하여 구조 설계가 이루어진 분리벽형 증류탑과 기존의 연속 2기 증류공정 간의 분리 효율을 비교하기 위해 HYSYS를 사용하여 다양한 원료 조건에 대하여 전산모사 실험을 수행하였다. 그 결과 제안된 분리벽형 증류탑이 기존 연속 2기 증류공정 대비 16%에서 65%까지 에너지를 절약할 수 있음을 확인하였다. 또한 분리벽형 증류탑에 의한 분리 성능 향상 정도는 중간 비점 물질의 조성에 크게 의존하며 중간비점 조성이 우세할수록 유리함을 확인하였고, 최적 에너지 분포 영역 경향은 원료 혼합물의 ESI 값에 의하여 결정됨을 알 수 있었다.

Plate waste study among hospitalised patients receiving texture-modified diet

  • Razalli, Nurul Huda;Cheah, Chui Fen;Mohammad, Nur Mahirah Amani;Manaf, Zahara Abdul
    • Nutrition Research and Practice
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    • 제15권5호
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    • pp.655-671
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    • 2021
  • BACKGROUND/OBJECTIVES: While plate waste has been widely investigated in hospitals, there have been minimal studies specific to the texture-modified diet (TMD). This study aims to determine the percentage of plate waste among patients prescribed with TMD and its contributory factors. SUBJECTS/METHODS: This was a single-centre study conducted in the university hospital on three types of TMD (blended diet, mixed porridge, minced diet) during lunch and dinner meals. Weighing method and visual estimation method assisted by digital photograph were adopted in this study. Face to face interview was carried out to investigate on 1) the food/food service quality factors in terms of patients' satisfaction level towards sensorial quality of food and food services provided and 2) the clinical/external factors including appetite, the provision of oral nutrition support, time taking the diet, the need for feeding assistance and the length of hospital stay. RESULTS: The mean percentage of overall plate waste of 95 patients receiving TMD was high (47.5%). Blended diet was identified as the most wasted diet (65%) followed by minced diet (56%) and mixed porridge (35%). Satisfaction level among patients was moderate. Patients on TMD in general had higher satisfaction level on the aspect of food service as compared to food quality. Substantial association between sensorial qualities of food and plate waste were varied according to individual TMD type. A multiple linear regression showed that only the satisfaction level toward the aspects of appearance and variety of foods were the predictors of TMD plate waste (R2 = 0.254, P < 0.05). CONCLUSIONS: A significant relationship between the percentage of plate waste and the overall satisfaction level of patients receiving TMD suggests that vigorous strategies are needed to reduce the food waste of TMD which will lead to a better nutritional status and clinical outcomes among the patients.