• Journal of the KSME
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• v.28 no.2
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• pp.113-118
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• 1988

선박의 상세 설계 도면을 바탕으로 한 선체 3차원 복잡진동의 FFM에 의한 해석의 경우를 제 외하고는 진동. 소음 해석에 관한 거의 모든 경우에 있어 PC의 활용이 가능하다고 할 수 있으며, 이미 부분적으로 PC화가 상당히 이루어져 있다. 또한 실험자료의 처리 및 독자적인 분석장비를 PC를 중심으로 상호 구성할 수 있다는 점은 앞으로의 PC활용에 큰 기대를 갖게 할 뿐만 아니라, 조선현장의 경우 진동. 소음 제어기술의 설계. 건조 단계에 미치는 영향을 고려할 때 가능한 한 빨리 각종 소프트웨어와 정보 자료의 PC화가 이루어져야만 한다.

• Bulletin of Food Technology
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• v.23 no.3
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• pp.392-399
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• 2010

최근 초음파(ultrasound, US) 기술의 원리와 응용, 특히 식품의 생리활성물질에 관련된 응용기술에 대하여 기술하였다. 간단한 초음파 기술은 제외하고, 유화, 용해, 조직개선, 균질화(homogenization), 점도, 추출, 건조, 결정화, 거품제거(defoaming) 등의 기술에 관한 것이다. 특히 초음파에 의한 추출(UAE)을 상세히 기술하였다. 오늘날 초음파 기술은 생리활성물질의 추출 같은 산업화에 응용되고 있으며, 기능성을 강화하기 위한 추출에도 이용하고 있다. 이러한 초음파 기술은 장래 효과적인 식품기술이 될 것이며, 또한 식품의 성질을 이해하는 데 도움이 될 것이다.

• Journal of Korea Ship Safrty Technology Authority
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• v.5
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• pp.10-19
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• 2000

소형어선이나 일반적인 활주형선형은 부분적인 형상 수정을 거치게 되면 3차원 곡면으로 이루어진 선체의 외판을 2차원 평면상에 전개하여 표현할 수 있다는 특성을 가지고 있다. 이러한 점을 활용하여 전개도형에 따라서 제작된 얇은 FRP 판재를 선 요소들로 정의된 형틀 상에서 변형시켜 선체의 형상을 만들고 그 내부에 추가로 FRP를 적층 함으로서 선체를 완성하는 방법을 제안하고자 한다.

• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.3
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• pp.147-156
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• 2018

On the reliability of occlusal contact marks with occlusal indicators, it must be important to consider the affecting results of using methods. With affecting the accuracy and validity of results, there are many variables such as thickness and material of indicator, occlusal force, number of usage and etc. Nevertheless, researches on the occlusal contact marks have limited to focusing thickness of indicators and occlusal force. For the control of variables, it is clinically recommended to do use new indicators in every trial and to secure dry condition and to use thinner ones. In addition, alternatives might be helpful to understand more appropriate results.

• Korean Journal of Food Science and Technology
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• v.38 no.4
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• pp.495-500
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• 2006

The physicochemical properties of brown rice flours produced under different drying and milling conditions were investigated. Moisture contents of hot-air dried, microwave dried and zet-milled brown rice flours (BrWZH) were 10.7%,13.7% and 8.0%-8.6%, respectively. Water absorption indices (WAI) and water soluble indices (WSI) of roll-milled brown rice flours (BrWRH) were lower (0.40-0.59 g/g; 0.7-3.0%) than those of zet-milled brown rice flours (0.58-0.79 g/g; 4.0-7.3%). Zet-milled brown rice flours had higher Hunter L values and more damaged starch (94.1-96.8; 28.2%) compared to roll-milled brown rice flours (91.3-91.9: 15.5%). The percentage of damaged starch and L values of brown rice flours increased as particle size of brown rice flours decreased. Roll-milled polished rice flour (Control) had the highest L value and lowest amount of damaged starch (97.1; 8.2%). Control, BrWRH, BrWZH, and ultrafine brown rice flour (HBrZMU) had peak viscosity values of 321, 255, 221, and 162 RVU, respectively and trough viscosity values of 217, 185, 175, and 113 RVU, respectively. Peak and trough viscosity (Rapid Visco Analyzer; RVA) properties of rice floors decreased as the particle size of rice flours decreased. HBrZMU demonstrated a higher onset temperature $(61.1^{\circ}C)$ compared to control $(54.8^{\circ}C)$ by differential scanning calorimetric (DSC). Crystal melting enthalpy $({\Delta}H)$ of control and brown rice flours were 10.4 J/g and 6.1-8.7 J/g, respectively. Results of this study suggested that physicochemical properties of brown rice flours were closely related to their particle size.

• The Journal of Engineering Geology
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• v.14 no.3 s.40
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• pp.273-285
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• 2004

The mechanical properties of the Cretaceous tuff distributed in the Goheung area were measured in the laboratory. Tuff (Goehung tuff and Palyeongsan welded tuff) in the study area is classified into vitric tuff with regard to its composition. The specific gravity, the dry density, the water content, the porosity and absorption ratio in tuffs of the study area are 2.51, $2.52(g/cm^2)$, 0.12($\%$), 4.51($\%$) and 1.91($\%$) in means, respectively. In the tuffs, dry densities are in inverse Proportion to Porosities, and absorption ratios are highly proportional with Porosities. The uniaxial compressive strengths(UCS) in the tuffs ranges from 80.4 to 208(MPa) and the average of the strength is 141.1(MPa). According to the engineering classification of intact rock (Deere & Miller, 1966), the tuffs are assigned to the high strength rocks. The point load strength index ($Is_a$) in axial test is 4.2(MPa) on the average, and the point load strength index ($Is_d$) in diametral test is 2.2(MPa) in mean, and the point load strength anisotrophic index($Ia_{(50)}$) by the ratio of $Is_a$ to $Is_d$ is 1.93. There is close linear correlation between the uniaxial compressive strength and point load strength index, and the equation representing the correlation is postulated as follows : UCS = 22 $Is_{(50)}$ +49 (MPa) (r=0.95). It is considered that this equation is a useful tool to estimate UCS for tuff in Goheung area.

• Proceedings of the Membrane Society of Korea Conference
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• 1994.10a
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• pp.72-73
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• 1994

Whey는 일명 lactoserum 이라고도 하며 치즈제조시 우유를 응고시키는 과정에서 Casein과 지방으로부터 분리되어 나오는 액상의 부산물로 본래 우유 부피의 약 90%를 차지하며, 용해성 단백질, 유당, 비타민과 무기질 등을 함유하고 있다. 유청에 함유되어 있는 단백질은 건조고형분의 약 13%가 되는데, 주요 단백질은 $\beta$-lactoglobulin(50%), $\alpha$-lactalbumin(22%), Serum albumin(5%), Immunoglobulin(12%), Proteose-peptone(10%) 등이 있다. 유청단백질중 가장 많이 함유되어 있는 $\beta$-lactoglobulin은 구형의 단백질로 단량체의 분자량은 약 18,400이며, pH 3.5~7 범위내에서는 해리되지 않는 이량체(dimer)를 형성한다. pH 3.5 이하에서 이량체는 해리되고 다량체의 형성으로 재평성한다. pH 7.0 이상의 알칼리 영역에서는 Conformational Change가 일어나는 것으로 알려져 있으며, 등전점(isoelectric point)은 pH 5.2이다. $\alpha$-lactalbumin은 14,200의 분자량을 가지는 구형의 단백질로 등전점은 pH 4.8이다.

• Radiation Oncology Journal
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• v.24 no.2
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• pp.81-87
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• 2006

Purose: This study is to evaluate the xerostomia following 3-dimensional conformal radiation therapy (3D CRT) in nasopharynx cancer patients using the xerostomia questionnaire score (XQS). Materials and Methods: Questionnaire study was done on 51 patients with nasopharynx cancer who received 3D CRT from Dec. 2000 to Aug. 2005. 3D CRT technique is based on 'serial shrinking field' concept by 3 times of computed tomography (CT) simulation. Total target dose to the primary tumor was 72 Gy with 1.8 Gy daily fractions. Xerostomia was assessed with 4-questions XQS, and the associations between XQS and time elapsed after RT, age, sex, stage, concurrent chemotherapy, and parotid dose were analyzed. Results: Concurrent chemotherapy was given to 40 patients and RT alone was given to 11 patients. The median time elapsed after 3D CRT was 20 ($1{\sim}58$) months and the mean XQS of all 51 patients was $8.4{\pm}1.9\;(6{\sim}14)$. XQS continuously and significantly decreased over time after 3D CRT ($X^2$=-0.484, p<0.05). There was no significant difference in XQS according to sex, age, and stag. However, XQS of concurrent chemotherapy patients was significantly higher than RT alone patients (P=0.001). XQS of patients receiving total mean parotid dose ${\ge}35 Gy$ was significantly higher than <35 Gy (p=0.05). Decreasing tendency of XQS over time after 3D CRT was observed. Concurrent chemotherapy and total mean parotid dose ${\ge}35 Gy$ were suggested to adversely affect radiation-induced xerostomia.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.8
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• pp.1104-1110
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• 2009

To investigate physiochemical characteristics of Liriope platyphylla tubers by various drying process, proximate constitute, levels of free sugar, organic acid, free amino acid, crude saponin and spicatoside A were analyzed. Drying methods included hot-air drying (DLR, $60^{\circ}C$, 48 hr) and roasting after hot-air drying (RDLR, roasting at $180^{\circ}C$ for 15 min). The moisture, crude protein, crude lipid, ash and NFE (nitrogen free extract) contents of FLR (fresh Liriope platyphylla tuber) were 69.99%, 1.85%, 0.02%, 0.79%, and 27.35%, respectively. The most abundant proximate component of DLR and RDLR was NFE, of which the contents in both sample were 80.09% and 86.07%, respectively. The major free sugars in DLR and RDLR was oligosaccharide II as 56$\sim$57% and the major organic acid was malic acid as 3.06$\sim$3.34%, respectively. In free amino acid, the major amino acid of FLR, DLR and RDLR was serine with contents of 477.41 mg%, 1394.88 mg%, and 180.33 mg%, respectively. The level of serine was significantly decreased by roasting process. The level of crude saponin in FLR, DLR and RDLR were 3.52%, 8.41%, and 10.15%, respectively.

• Journal of the Korean Geotechnical Society
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• v.19 no.5
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• pp.155-162
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• 2003

The soil-water characteristic curve (SWCC) represents the essential constitutive relationship for solving various problems in unsaturated soil mechanics. A reliable and convenient experimental method is needed for the determination of the SWCC in engineering applications. This study introduces and proves that the suction-saturation experimental measurement based on the flow pump technique is a convenient and accurate method for obtaining the SWCC. The flow pump technique provides complete control over the test conditions and is capable of detecting all the important elements of the SWCC. In particular, it is capable of defining continuous drying and wetting curves, the moment of air occlusion, and the hysteretic behavior of unsaturated soils. Not only the optimal testing procedure but also the analysis technique for the flow pump technique has been established in this study. Especially, the method of the suction drop measurement was developed to measure the SWCC. This method is a convenient and time saving method without losing accuracy.