• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2003년도 춘계학술대회 논문집
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• pp.398-404
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• 2003

Most previous researches for the hybrid composite materials such as FRMLs(Al/AFRP, Al/GFRP) have evaluated the fatigue delamination behavior using the traditional fracture mechanism. However, most previous researches have not generally been firmed yet. Because delamination growth behavior in hybrid composite should be consider delamination growth rate, $dA_D$/da using the delamination shape factors, fs instead of traditional fracture mechanic parameters. The major purpose of this study was to evaluate the relationship between delamination shape factor, fs and delamination growth rate, $dA_D$ . And a propose parameter on the delamination aspect ratio, b/a. The details of the study are as follow : 1) Relationship between crack length, a and delamination width,b. 2) Relationship between delamination aspect ration, b/a and delamination area rate,($(A_D)_{N}(A_D)_{ALL}$. 3) Variation of delamination growth rate, $dA_D/da$ was attendant on delamination shape factors, $fs_1$, $fs_2$, $fs_3$. The test results indicated the delamination growth rate depends on delamination shape factors.

• 대한지역사회영양학회지
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• 제2권2호
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• pp.218-231
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• 1997

• 대한본초학회지
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• 제28권2호
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• pp.61-65
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• 2013

Objectives : Samchulgeonbi-tang (shenzhujianpi-tang) has been prescribed as one of traditional herbal medicine for treatment of stomach diseases since ancient time in Korea. Samchulgeonbi-tang extract was fermented by Lactobacillus spp. for improving the effect. However, the toxicity and safety of fermented Samchulgeonbi-tang (FS) extract were not confirmed. Therefore, this study was performed to evaluate the acute toxicity and safety of FS extract. Methods : To evaluate the acute toxicity and safety of FS extract, several doses of FS extract, 0, 500, 1000 and 2000 mg/kg, were orally administered to 20 male and 20 female ICR mice, respectively. After treatment with FS extract, we observed mortality, general toxicity, behavior and change of body weight for the 14 days. After 14 days of oral administration, all mice were sacrificed and hematological parameters were analyzed from blood serum. Results : In present study, the toxic signs such as mortality or abnormal behaviors by FS extract were not observed. There are no significant differences between FS-treated group and control group in body weight, organ weights, and hematological parameters. Conclusions : The remarkable adverse effects by FS extract were not observed in ICR mice. Also, any death was not occurred at all treated FS doses, 500, 1000 and 2000 mg/kg. Therefore, the approximate lethal dose (ALD) of FS extract may be more than 2000 mg/kg.

• 대한가정학회지
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• 제19권2호
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• pp.165-174
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• 1981

The survey was conducted through circulating questionares to three hundred sampled college students in Seoul. the findings are as follows. 1. 52% of MS (Male Students) and 25% of FS(Female Students) brought home-made lunches with them, while 39.2% of MS and 51.6% of FS used food services in campus. 2. Contents of home-made lunches were steamed rice(57%) or steamed ricebarley mix(24%) as a major diet, and Kimchi (Korean style pickled vegetable), fried eggs, soy-sauced sardins as side-dish. The favorite eating places for the students with home-made lunches were found to be campus dining hall for MS, classrooms for FS. 3. The primary reason for not having home-made lunches are the difficulties for handing. 4. The preference for the food served in campus dining hall was the traditional Korean food for MS and western style Snack (bakery and soft drinks) for the FS. 5. Costs spent for lunches were in the range of 200~600 won. 6. Followings are the comparison table for each ingredient compared with recommended daily requirement (RDR).

• 한국식품조리과학회지
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• 제10권1호
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• pp.29-34
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• 1994

In this stydy, Korean traditional Meju adjusted with: the salt contents of 12%, 16%, 20% and the ripeming periods of 90, 135 and 180 days. The results were summerized as follows; 1 The changes of moisture content in soy sauce by 16% salt content was slightly high and the protein was 5.88 by 12%, salt content 2. As the ripening periods was increased, the pH was decreased, on the other hand the total acidity was increased slightly. 3. In the 180 day ripened sample, the salt content increa-sed and the 12% salt content represented 30.6ft salt content. 4. The reduced sugar decreased 135 day ripening, but it increased 180 day ripening at 12fs, 16fs, 20fs salt content. 5. The amino acid content siginificantly decreased by salt content (Serine, Arginine), ripeming periods (Glutamic acid, Asparagine, Glycine, Threomine, Alanine, Methionine, Valine, Isoleucine, Lysine) and ripening time and salt content (Phenylalanine, Leucine) 6. The Fe content decreased 12% salt content while it increa-sed 16% 20% salt content. 7. According to the ripening time, there were significant changes in color, clearance, taste, flavor and over all acceptabilities. As the lower the acceptabilities on flavor or taste increase.

• Journal of Power Electronics
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• 제17권1호
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• pp.76-87
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• 2017

Finite-set predictive current control (FS-PCC) is advantageous for power converters due to its high dynamic performance and has received increasing interest in multilevel inverters. Among multilevel inverter topologies, the cascaded H-bridge (CHB) inverter is popular and mature in the industry. However, a main drawback of FS-PCC is its large computational burden, especially for the application of CHB inverters. In this paper, an FS-PCC method based on a deadbeat solution for three-phase zero-common-mode-voltage CHB inverters is proposed. In the proposed method, an inverse model of the load is utilized to calculate the reference voltage based on the reference current. In addition, a cost function is directly expressed in the terms of the voltage errors. An optimal control actuation is selected by minimizing the cost function. In the proposed method, only three instead of all of the control actuations are used for the calculations in one sampling period. This leads to a significant reduction in computations. The proposed method is tested on a three-phase 5-level CHB inverter. Simulation and experimental results show a very similar and comparable control performance from the proposed method compared with the traditional FS-PCC method which evaluates the cost function for all of the control actuations.

• 한국정보전자통신기술학회논문지
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• 제11권1호
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• pp.70-75
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• 2018

스마트 팩토리는 설계 개발, 제조, 유통 물류 등 생산 전체 과정에 정보 통신 기술을 적용하여 생산성, 품질, 고객만족도 등을 향상시킬 수 있는 지능형 공장이다. 스마트 팩토리에서 발생되는 데이터의 양은 공장의 규모 및 시설 수준에 따라 많은 차이를 보이지만, 기존의 생산관리시스템을 활용하여 방대한 양의 데이터를 발생시키는 스마트 팩토리 환경에 적용하기에 어려움이 있다. 이로 인해 방대한 양의 빅데이터 처리할 수 있는 빅데이터 분산 처리 시스템의 필요성이 요구되고 있다. 따라서 본 논문에서는 스마트 팩토리 환경에서의 GlusterFS 기반 빅데이터 분산 처리 시스템 설계하였다. 제안하는 빅데이터 분산 처리 시스템은 기존 분산 처리 시스템에 비해 네트워크 트래픽 분산 및 관리를 통해 부하와 데이터 소실 위험도를 감소시켰다.

• 한국축산식품학회지
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• 제39권2호
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• pp.240-254
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• 2019

This study investigated the effect of storage state (chilled state on sous-vide, CS; frozen state without thawing on sous-vide, FS; and frozen/thawed states on sous-vide, TS) and sous-vide cooking temperature ($65^{\circ}C$ and $72^{\circ}C$) on the longissimus dorsi muscle quality of pork. FS showed a higher moisture content than that of CS and TS (p<0.001), whereas both FS and CS showed higher expressible moisture loss than that of TS (p<0.001). FS showed a lower cooking loss (p<0.001) than that of CS and TS. FS and TS exhibited significantly higher lipid oxidation than that of CS. Carbonyl and sulfhydryl content were not significantly affected by the storage treatment. FS and TS exhibited lower shear force than that of CS (p<0.001). FS and TS showed higher springiness than that of CS (p<0.001), FS exhibited lower gumminess than that of CS and TS (p<0.01). Sous-vide treatment at $65^{\circ}C$ exhibited significantly higher moisture content and lower expressible moisture loss, cooking loss, and total and sarcoplasmic protein than those at $72^{\circ}C$. Shear force and springiness of $65^{\circ}C$-treated groups were lower than those of $72^{\circ}C$-treated groups (p<0.01). Cooking temperature significantly influenced overall acceptability, whereas the storage state did not affect the overall acceptability. These results indicated that meat quality might be improved upon cooking from the frozen or frozen/thawed state using sous-vide when compared with traditional processing.

• 한국식품과학회지
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• 제53권3호
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• pp.356-363
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• 2021

본 연구는 멸치액젓 고유의 풍미를 유지하되 비린내를 줄이고 발효속도를 향상시키기 위한 방법으로, 재래식 액젓 제조 시에도 손쉽게 이용할 수 있으며 우리 조상들이 이용한 방법을 응용하고자 시중의 재래식 누룩 3종과 개량식 누룩 2종을 멸치액젓에 첨가하여 누룩 첨가 멸치액젓의 품질특성을 분석하였으며 그 결과는 다음과 같다. 누룩의 protease 활성은 누룩 C가 모든 시료 중에서 가장 높은 활성도를 보였다. pH와 총산도의 변화는 발효 기간의 경과에 따라 pH가 처음 15일까지는 급격히 낮아지다가 경시적으로 낮아졌으며, 총산도는 pH 변화의 추세에 따라 높아졌다. 아미노산성 질소의 함량은 발효 초기 15일 동안 급격히 증가하다가 그 이후에는 경시적으로 증가하였으며, 발효 60일에 Fs-C가 대조구와 유의성에 있어 차이를 나타내지는 않았지만 1292±14.9 mg% 로 가장 높은 함량을 나타냈다. 휘발성염기질소 함량은 여러 가지 잡균의 번식이 많은 재래누룩에서 대체로 휘발성염기질소 함량이 높고 단일균만을 접종시켜 제조한 개량누룩을 첨가한 액젓이 휘발성 염기질소의 함량이 낮은 것을 볼 수 있었다. 갈색도는 발효 초기에 가장 낮은 값을 나타냈던 시료 Fs-C가 발효 60일에는 증가율이 107.1%로 가장 큰 변화를 보이며 높은 것으로 나타났다. 유리아미노산은 Fs-C 시료가 대조구에 비해 5.6%의 멸치 함량 감소에도 총 아미노산 함량은 1.9% 감소한 값을 나타냄으로 큰 차이를 나타내지 않음을 볼 수 있었다. 누룩 첨가시료 중에서 Fs-C 시료의 총 유리아미노산 함량이 가장 높은 것으로 나타났으며, 특히 glutamic acid 함량은 총 유리아미노산 중 차지하는 비율이 15.0-18.9%로 재래누룩 첨가시료들이 대조구와 개량누룩 첨가시료들보다 높았으며, 재래누룩 중에서도 Fs-C 시료가 가장 높은 함량을 나타냈다. 관능 평가 결과는 누룩 무첨가구인 대조구가 전체 시료구 중에 가장 낮은 평가를 받았다. 재래누룩 중에서는 Fs-C가, 개량누룩 중에서는 Fs-D가 전체적인 경향으로 볼 때 높은 평가를 받아 우수성이 인정되었다고 할 수 있겠다. 속성 멸치액젓을 제조하기 위한 속성 발효제로서 누룩의 첨가는 발효기간을 단축시키는데 도움을 줄 뿐만 아니라, 감칠맛을 더해 주고 비린내를 줄여줌으로써 풍미를 더해 주어 전체적인 관능도를 높여 주었으므로 멸치액젓의 제조에 효과적인 접근법으로 사료된다.

• 대한약침학회지
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• 제27권1호
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• pp.14-20
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• 2024

Objectives: Frozen shoulder (FS) is one of the most challenging shoulder disorders for patients and clinicians. Its symptoms mainly include any combination of stiffness, nocturnal pain, and limitation of active and passive glenohumeral joint movement. Conventional treatment options for FS are physical therapy, nonsteroidal anti-inflammatory drugs, injection therapy, and arthroscopic capsular release, but adverse and limited effects continue to present problems. As a result, pharmacoacupuncture (PA) is getting attention as an alternative therapy for patients with FS. PA is a new form of acupuncture treatment in traditional Korean medicine (TKM) that is mainly used for musculoskeletal diseases. It has similarity and specificity compared to corticosteroid injection and hydrodilatation, making it a potential alternative injection therapy for FS. However, no systematic reviews investigating the utilization of PA for FS have been published. Therefore, this review aims to standardize the clinical use of PA for FS and validate its therapeutic effect. Methods: The protocol was registered in Prospero (CRD42023445708) on 18 July 2023. Until Aug. 31, 2023, seven electronic databases will be searched for randomized controlled trials of PA for FS. Authors will be contacted, and manual searches will also be performed. Two reviewers will independently screen and collect data from retrieved articles according to predefined criteria. The primary outcome will be pain intensity, and secondary outcomes will be effective rate, Constant-Murley Score, Shoulder Pain and Disability Index, range of motion, quality of life, and adverse events. Bias and quality of the included trials will be assessed using the Cochrane handbook's risk-of-bias tool for randomized trials. Meta analyses will be conducted using Review Manager V.5.3 software. GRADE will be used to evaluate the level of evidence for each outcome. Results: This systematic review and meta-analysis will be conducted following PRISMA statement. The results will be published in a peer-reviewed journal. Conclusion: This review will provide scientific evidence to support health insurance policy as well as the standardization of PA in clinical practice.