• Title/Summary/Keyword: RFT

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A Study of the Endurance Severity for Automobile Wheel Safety Standard Revision (자동차 휠 안전기준 개정 대응을 위한 내구 가혹도 검토)

  • Jang, JinHee;Heo, SungPil
    • Journal of Auto-vehicle Safety Association
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    • v.14 no.3
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    • pp.30-34
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    • 2022
  • The CFT(Cornering Fatigue test) and RFT(Radial Fatigue Test) are tests for evaluating the endurance of the disc and rim region of the wheel. In recent, automobile wheel safety standards have been revised and the applied load and target life criteria are different from existing conditions. The verification evaluation of all wheels requires a lot of time and cost. In this study, the endurance severity of each test was compared through strain-life approach by selecting 4 steel and 8 aluminum wheels.

Clinical study of the 15patients survived after acute paraquat intoxication (급성 파라콰드중독후 생존한 15예 환자의 임상적 고찰)

  • Kim Dong-Woung
    • Journal of Society of Preventive Korean Medicine
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    • v.3 no.1
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    • pp.36-36
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    • 1999
  • From January 1994 to April 1997, there was 15 survivals who was admitted to the department of internal medicine, Wonkwang Oriental Medicine' Hospital in Cheun-ju, after ingestion of paraquat, and treated with Oriental and western medicine therapy. For the patients, I investigated clinical symptoms, gastroduodenoscopy, intake by oral and parenteral route, and output by urine and stool, serum ALP, AST. ALT, Bilirubin, BUN, Creatinine level and urine analysis. On admission day, the LFT level was as follows. The serum mean ALP, AST, ALT, Total Bilirubin and Direct Bilirubin was 10.05${\pm}$2.75 KAU, 66.67${\pm}$9.88 IU/L, 43.80${\pm}$7.74 IU/L, 1.89${\pm}$1.22 ㎎/dl and 1.10${\pm}$1.14 ㎎/dl respectively. After that day, administered Gamdutang and checked the mean LFT level regullary. Until the 3rd day, the mean ALP, AST, ALT, Total Bilirubin and Direct Bilirubin level was 11.0l${\pm}$3.16 KAU, 56.47${\pm}$7.19 IU/L, 59.00${\pm}$7.57 IU/L, 2.54${\pm}$1.78 ㎎/dl, 1.64${\pm}$1.59 ㎎/dl respectively. From 4th day to 7th day, the mean ALP; AST, ALT, Total Bilirubin and Direct Bilirubin level was 12.51${\pm}$3.49 KAU, 77.85${\pm}$7.17 IU/L, 58.00${\pm}$9.09 IU/L, 2.54${\pm}$1.97 ㎎/dl, and 1.80${\pm}$1.81 ㎎/dl respectively. From 8th day to 10th day, the mean ALP, AST, ALT, Total Bilirubin and Direct Bilirubin level was 12.43${\pm}$3.14 KAU, 41.13${\pm}$6.49 IU/L, 50.40${\pm}$7.17 IU/L, 1.66${\pm}$1.90 ㎎/dl and 1.14${\pm}$1.50 ㎎/dl respectively. From 11th day to 14th day, the mean ALP, AST, ALT, Total Bilirubin and Direct Bilirubin level was 12.30${\pm}$3.25 KAU, 31.07${\pm}$3.85 IU/L, 43.33${\pm}$5.49 IU/L, 1.62${\pm}$1.95 ㎎/dl, 1.17${\pm}$1.71 ㎎/dl respectvely. On admission day, the mean RFT level as follows. Serum BUN and Creatinine level was 28.73${\pm}$5.19 ㎎/dl and 1.82${\pm}$1.27 ㎎/dl respectively. After that day, administered Gamdutang and checked the mean RFT level regullary. Until the 3rd day, the mean BUN and Creatinine level was 32.12${\pm}$5.65 ㎎/dl and 2.31${\pm}$0.45 ㎎/dl respectively. From 4th day to 7th day, the mean BUN and Creatinine level was 31.07${\pm}$5.47 ㎎/dl and 1.92${\pm}$0.79 ㎎/dl respectively. From 7th day to 10th day, the mean BUN and Creatinine level was 17.47${\pm}$3.57 ㎎/dl and 1.33${\pm}$0.59 ㎎/dl respectively. From 11th day to 14th day, the mean BUN and Creatinine level was 11,93${\pm}$3.16 ㎎/dl, 1.27${\pm}$0.38 ㎎/dl respectively.

The Study of Safety of Herbal Medicine Including Fuzi(附子) on High Range of LFT, RFT Patients (간, 신장수치 이상 환자에 부자(附子) 배합 처방 투여가 미치는 영향)

  • Lee, Young-Jun;Hwang, Won-Duk;Lee, Jae-Wook;Jeong, Hui-Jin;Bae, Su-Hyun;Kim, Kyu-Gon
    • Herbal Formula Science
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    • v.19 no.2
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    • pp.179-189
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    • 2011
  • Objectives : Aconiti Lateralis Preparata Radix(fuzi, 附子) and its class herbs(chaunwu, caowu etc.) are necessary for some clinical conditions, such as cold pain, chilling etc,. But, they has some poison component. And, they have been known to cause liver and kidney injury, and dangerous in the patients who has abnormal range of LFT and RFT. This study shows the consequences for aspartate aminotransferase(AST), alanine aminotransferase(ALT), blood urea nitrate(BUN), and Creatinine were analyzed using samples from patients who took the decoction containing fuzi. Methods : Blood samples for Experiment Group(E) were collected from 63 patients, who took the decoction containing fuzi, admitted into the 6th internal medicine department of Dong Eui Oriental Medical Hospital between from January 2007 to March 2011. In compared to those of experiment group, blood samples as Control Group(C) were collected from 64 patients, who took the decoction not containing fuzi, admitted into the same hospital from January 2009 to April 2011. Results and Conclusions : 1. AST No changed : E 4.17%, C 2.63%, Increased : E 12.5%, C 28.95%, Decreased : E 80.33%, C 68.42% 2. ALT No changed : E2.94%, C5.13%, Increased : E 8.82%, C 20.51%, Decreased : E 88.24%, C 74.36% 3. BUN No changed : E 0%, CG 7.14%, Increased : E 32.25%, CG 14.29% Decreased : EG 67.65%, CG 78.57% 4. Creatinine No changed : EG 5.00%, CG 0%, Increased : EG 35.00%, CG 54.55% Decreased : EG 60.00%, CG 45.45% 5. The results suggest that the decoction containing fuzi isn't harmful AST, ALT, BUN, Cr of the patients who has high range of them.

Investigating Organ Toxicity Profile of Tenofovir and Tenofovir Nanoparticle on the Liver and Kidney: Experimental Animal Study

  • Peter, Aniekan Imo;Naidu, Edwin CS;Akang, Edidiong;Ogedengbe, Oluwatosin O;Offor, Ugochukwu;Rambharose, Sanjeev;Kalhapure, Rahul;Chuturgoon, Anil;Govender, Thirumala;Azu, Onyemaechi O
    • Toxicological Research
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    • v.34 no.3
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    • pp.221-229
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    • 2018
  • Tenofovir nanoparticles are novel therapeutic intervention in human immunodeficiency virus (HIV) infection reaching the virus in their sanctuary sites. However, there has been no systemic toxicity testing of this formulation despite global concerns on the safety of nano drugs. Therefore, this study was designed to investigate the toxicity of Tenofovir nanoparticle (NTDF) on the liver and kidney using an animal model. Fifteen adult male Sprague-Dawley (SD) rats maintained at the animal house of the biomedical resources unit of the University of KwaZulu-Natal were weighed and divided into three groups. Control animals (A) were administered with normal saline (NS). The therapeutic doses of Tenofovir (TDF) and nanoparticles of Tenofovir (NTDF) were administered to group B and C and observed for signs of stress for four weeks after which animals were weighed and sacrificed. Liver and kidney were removed and fixed in formal saline, processed and stained using H/E, PAS and MT stains for light microscopy. Serum was obtained for renal function test (RFT) and liver function test (LFT). Cellular measurements and capturing were done using ImageJ and Leica software 2.0. Data were analysed using graph pad 6, p values < 0.05 were significant. We observed no signs of behavioural toxicity and no mortality during this study, however, in the kidneys, we reported mild morphological perturbations widening of Bowman's space, and vacuolations in glomerulus and tubules of TDF and NTDF animals. Also, there was a significant elevation of glycogen deposition in NTDF and TDF animals when compared with control. In the liver, there were mild histological changes with widening of sinusoidal spaces, vacuolations in hepatocytes and elevation of glycogen deposition in TDF and NTDF administered animals. In addition to this, there were no significant differences in stereological measurements and cell count, LFT, RFT, weight changes and organo-somatic index between treatment groups and control. In conclusion, NTDF and TDF in therapeutic doses can lead to mild hepatic and renal histological damage. Further studies are needed to understand the precise genetic mechanism.

Optimal Conditions of Reaction Flavor for Synthesis of Crab-like Flavorant from Snow Crab Cooker Effluent (홍게 자숙액으로부터 게향 제조를 위한 반응향의 최적화)

  • Ahn, Jun-Suck;Jeong, Eun-Jeong;Cho, Woo-Jin;Cha, Yong-Jun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.43 no.1
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    • pp.128-134
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    • 2014
  • To develop a crab-like flavorant from snow crab cooker effluent (SCCE, $20^{\circ}Brix$), optimal reaction conditions were determined using response surface methodology (RSM) combined with reaction flavoring technology (RFT). Using five variables (proline, glycine, arginine, methionine, fructose), RSM based on a five-level central composite design was applied to evaluate sensory acceptance (odor, taste, and overall acceptance) as dependent variables. A model equation obtained from RSM showed 0.88 of R-square for odor, 0.90 for taste, and 0.95 for overall acceptance with 0.07 lack of fit in overall acceptance (P<0.05). Odor score (predicted value) was 7.21 in the saddle point. Optimal flavoring conditions for making a crab-like flavorant were as follows: addition of 0.29 g of proline, 0.63 g of glycine, 0.61 g of arginine, 0.02 g of methionine, and 1.07 g% (w/v) of fructose into SCCE with RFT (90 min at $130^{\circ}C$). Odor score obtained under optimal conditions was 7.56, which was higher than the predicted value.

Interoperability Framework between GRID and PACS based on Web Services (웹서비스 기반의 Grid-PACS 상호운용성 프레임워크)

  • Lee, Bong-Hwan;Cho, Hyun-Sug
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.8
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    • pp.1799-1808
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    • 2010
  • Recently the increasing collaborative research requires the remote medical and clinical data sharing and access of external institutions. In this paper, an interoperability framework between Grid and PACS using Web services is proposed and implemented in order to provide flexible and efficient medical data management. The Digital Imaging and Communications in Medicine(DICOM) standard defines medical image data exchange and transfer between PACSs and image databases. However, medical data exchange between hospitals is limited within the trusted and static environments. Moreover, DICOM does not provide medical data management and the Grid middleware does not include standard toolkit to access DICOM data. To address this issue, a Web services-based Grid Service Mediator (WGSM) which provides PACS integration and medical image data management is developed. The WGSM consists of several service mediators such as compress mediator, GridFTP mediator, RFT mediator, MyProxy mediator, MDS mediator, and RLS mediator and others. The proposed Web services-based framework provides user authentication and secure data access between PACSs in collaborative environments. In particular, the WGSM allows ordinary users to access remote PACS data in a simple and efficient manner without any the knowledge about underlying Grid middleware.

Improvement of Durability and Reliability by Developing a Bi-axial Test Process of Road Wheel (차량 로드 휠의 복합축 평가 프로세스 구축을 통한 내구신뢰성 강건화 및 주행안정성 향상)

  • Chung, Soo Sik;Yoo, Yoen Sang;Kim, Dae Sung
    • Journal of Auto-vehicle Safety Association
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    • v.8 no.1
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    • pp.26-30
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    • 2016
  • The steel road wheel on ventilation holes was cracked in the vehicle durability test. But the component durability test by uni-axial, CFT(Cornering Fatigue Test) and RFT(Radial Fatigue Test) had been satisfied. That is, the uni-axial component test could not forecast the crack of vehicle. Therefore this study developed the bi-axial test mode to reflect a vehicle condition(to reflect both vertical and lateral force simultaneously) based on real load data which was measured in Europe and China and developed CAE simulation too. It reproduced the cracks same as vehicle's and verified by bi-axial test machine in the LBF(Fraunhofer Institute for Structural Durability and System Reliability) durability research center in Germany. Finally this the durability CAE simulation by using HMC(Hyundai Motor Company)'s the bi-axial test mode predicts feasibly the steel wheel's durability performance before vehicle durability test.

Preliminary studies for production of 61Cu using natural nickel target with RFT-30 cyclotron

  • Lee, Jun Young;Hur, Min Goo;Yang, Seung Dae;Park, Jeong Hoon
    • Journal of Radiopharmaceuticals and Molecular Probes
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    • v.5 no.2
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    • pp.79-82
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    • 2019
  • 61Cu is a promising PET radiometal having favorable nuclear decay characteristics with appropriate half-life of 3.3 h. Owing its promising capabilities in radiopharmaceutical chemistry and its chemical similarities with its isotopes 64Cu and 67Cu, in this work we have tried to optimize the production and separation conditions of 61Cu. 61Cu was produced via (p, x) reaction with natural nickel which was electroplated on the high purity silver coated copper backing target holder. The optimization of target electrodeposition, beam energy and current modulation, target dissolution and separation were optimized in this study. Preliminary studies show that 61Cu was successfully produced and separated which can be further extended for the production of 64Cu and 67Cu.

Histone Deacetylase 701 (HDT701) Induces Flowering in Rice by Modulating Expression of OsIDS1

  • Cho, Lae-Hyeon;Yoon, Jinmi;Wai, Antt Htet;An, Gynheung
    • Molecules and Cells
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    • v.41 no.7
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    • pp.665-675
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    • 2018
  • Rice is a facultative short-day (SD) plant in which flowering is induced under SD conditions or by other environmental factors and internal genetic programs. Overexpression of Histone Deacetylase 701 (HDT701) accelerates flowering in hybrid rice. In this study, mutants defective in HDT701 flowered late under both SD and long-day conditions. Expression levels of florigens Heading date 3a (Hd3a) and Rice Flowering Locus T1 (RFT1), and their immediate upstream floral activator Early heading date 1 (Ehd1), were significantly decreased in the hdt701 mutants, indicating that HDT701 functions upstream of Ehd1 in controlling flowering time. Transcript levels of OsINDETERMINATE SPIKELET 1 (OsIDS1), an upstream repressor of Ehd1, were significantly increased in the mutants while those of OsGI and Hd1 were reduced. Chromatin-immunoprecipitation assays revealed that HDT701 directly binds to the promoter region of OsIDS1. These results suggest that HDT701 induces flowering by suppressing OsIDS1.

Case Study of Cancer Patients Treated with Herbal Acupuncture Therapy (약침치료를 이용한 각종 암환자의 임상사례)

  • Yoo, Hwa-Seung;Cho, Jung-Hyo;Lee, Yeon-Weol;Son, Chang-Gue;Choa, Chong-Kwan
    • Journal of Pharmacopuncture
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    • v.7 no.1 s.12
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    • pp.27-36
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    • 2004
  • Objective : This study was aimed to validate the Herbal Acupuncture Therapies(HAT) for cancer patients. Patients and methods : This retrospective study was performed on 8 patients who were diagnosed as cancer in Korea and treated with HAT in the oriental hospital of Daejeon University, from January 2003 to January 2004. We retrospectively analyzed the medical records of 8 patients for improvement of symptoms, toxic effects of liver and kidney, myelosupression and changes of Quality of Life(QOL). Results : Analysis of change of chief complaints showed that 75% patients replied moderate relief and 25% replied complete relief in Likert scale. Analysis of Liver Function Test(LFT), Renal Function Test(RFT) level showed that HAT does not have toxic effects on liver and kidney. Analysis of Complete Blood Count(CBC) level showed that HAT does not have myelosuppression effects on bone marrow. Analysis of QOL showed that 100% patients replied improvement in Eastern Cooperative Oncology Group status(ECOG) status. Conclusion : Our findings suggest that HAT offer potential benefits for cancer patients.