• 농약과학회지
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• 제9권2호
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• pp.113-121
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• 2005

국가차원에서 식품안전 프로그램은 소비자보호와 식인성질환의 예방을 기본요소로 하고 있으며 정부, 식품산업, 소비자가 책임질 일이다. 여기에서는 WHO에서 제안하고 있는 식품안전 프로그램의 원칙을 소개한 다음 식품생산에 사용되는 의도적 첨가물의 잔류기준 설정에서 GAP의 중요성, 국제기구와 국내에서 잔류농약의 기준설정에 활용되고 있는 절차와 차이점을 지적하였다. 결론적으로 잔류농약에 대한 국내기준을 Codex 기준과 조화시키는데 필요한 사항들을 건의하였다.

• Journal of Ginseng Research
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• 제18권2호
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• pp.118-121
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• 1994

Alcohol and acetaldehyde concentrations were measured in the blood and brain of rats which were treated with 20% alcohol (control group) or co-administered 20% alcohol with ginseng extract residue roasted (test group). There was no change in blood alcohol concentration between control and test group. However, the brain alcohol concentration was lowered in the test group which was treated for seven days. The concentration of aldehyde in the brain and blood was lowered in the test group. The activities of monoamine oxidase b in various regions of brain were recovered to normal group in the test groups. However, the Quantities of naloxone binding receptors were not changed by ginseng extract residue roasted.

• 한국연초학회지
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• 제16권2호
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• pp.97-101
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• 1994

Tobacco stalks were cut and removed from the field after harvest, and urea was treated by placing it on the cutting portions of the remaining tobacco stumps. Relative virus infectivity of the root residue(compared to the fresh root residue infected with TMV) was reduced to 14.6% in December, 1993(before overwintering) and to 8.5% in March, 1994 just before transplanting, indicating that the TMV infectivity decreased remarkably, but was preserved still in the root residue in the field soil. There was no significant difference in infectivity of remaining root tissue between the treated and untreated root residue. However, as roots with urea treatment had been extensively decayed, only about one - fifth of the initial root volume remained after overwintering. TMV occurred less (by one - third) in the urea treatment than in the control, suggesting that urea treatment effectively provented tobacco from TMV infection by reducing the inoculum potential.

• Journal of Ginseng Research
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• 제20권1호
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• pp.60-64
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• 1996

In this study, we investigated the appropriate conditions to extract acidic polysaccharide and to prepare red ginseng extract being rich in acidic polysaccharide from red tail ginseng marc produced after manufacturing alcoholic extract from red tail ginseng. Amount of acidic polysaccharide in red tail ginseng marc was about 11%. The best condition for the extraction of acidic polysaccharide from the marc was using of 3~5 mg of $\alpha$-amylase/g residue/15 ml of distilled water, and the amount of acidic polysaccharide in water extract of the residue treated with $\alpha$-amylase was about 27%. So, it is possible to manufacture red ginseng extract being rich in acidic polysaccharide using water extract of red tail ginseng alcoholic residue as extraction solvent. From the above results, we suggest that red tail ginseng residue produced by manufacturing alcoholic extract of red tail ginseng has high potencies in the utilization of waste material.

• 대한수학회지
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• 제46권1호
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• pp.13-30
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• 2009

A subset of n tuples of elements of ${\mathbb{Z}}_9$ is said to be a code over ${\mathbb{Z}}_9$ if it is a ${\mathbb{Z}}_9$-module. In this paper we consider an special family of cyclic codes over ${\mathbb{Z}}_9$, namely quadratic residue codes. We define these codes in term of their idempotent generators and show that these codes also have many good properties which are analogous in many respects to properties of quadratic residue codes over finite fields.

• 보존과학회지
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• 제36권4호
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• pp.244-254
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• 2020

This study investigates prehistoric human subsistence and pottery use on the Korean peninsula through the organic residue analysis of archaeological potsherds. Ancient human subsistence is one of the core topics in Korean archaeology. However, due to the high acidity of sediments, which prevents the long-term preservation of organic remains, archaeologists have been short of critical information on how these early prehistoric dwellers lived. Ceramic vessels can contain well-preserved lipids originating from past culinary practices. For a better understanding of human subsistence on the prehistoric Korean peninsula, food-processing behaviors were reconstructed by analyzing ancient lipids extracted from a pottery matrix. The potsherd samples used in the analysis in this paper were collected from major prehistoric habitation sites. The results show that subsistence strategies differed according to both location and time period and reveal how organic residue analysis can contribute to a better understanding of prehistoric human subsistence strategies.

• 공업화학
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• 제10권6호
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• pp.907-912
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• 1999

본 연구는 유기산염 및 알칼리 원료를 사용해 야채 및 과일등에 잔류되어 있는 농약 및 유성오염의 제거효과를 GC와 세정력 측정장치를 사용해 조사했다. 일반적으로 잔류농약 등의 유성 오염원을 제거하기 위해서는 합성세제, 유기용제 등의 여러 방법이 있지만 본 연구에서는 특별히 식품첨가물 원료만 사용했다. 알칼리 수용액상에서 trisodium citrate를 사용했을때 가장 우수한 결과를 나타냈는데, 기존의 화학 합성세제와 비교했을 때 우수한 농약제거력이 나타났다.

• 대한전자공학회논문지
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• 제22권5호
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• pp.62-68
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• 1985

최근 특수목적의 신호처리 분야에서 레지듀 수체계의 특성 이용에 대한 관심이 고조되고 있는 바논문에서는 아날로그 입력으로부터 직접 레지듀 부호를 얻을 수 있는 A/R 변환방법을 제시하였고 이에 의해 RNS 디지탈 필터를 실현하였다. 끝으로 오차해석과 함께 RNS 특유의 스케일 오차 모델을 설정하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1999년도 춘계학술대회 논문집
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• pp.501-504
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• 1999

In the shallow trench isolation(STI) chemical mechanical polishing(CMP) process, the key issues are the optimized thickness control within- wafer-non-uniformity, and the possible defects such as nitride residue and pad oxide damage. These defects after STI CMP process were discussed to accomplish its optimum process condition. To understand its optimum process condition, overall STI related processes including reverse moat etch, trench etch, STI filling and STI CMP were discussed. It is represented that the nitride residue can be occurred in the condition of high post CMP thickness and low trench depth. In addition there are remaining oxide on the moat surface after reverse moat etch. It means that reverse moat etching process can be the main source of nitride residue. Pad oxide damage can be caused by over-polishing and high trench depth.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.284-285
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• 2007

In this paper, we present the effect on a novel transmission line filter response by the etch hole position on the suspended ground and the residue on the resonator under ground plane. We defined the etch hole offset as the distance from the sidewall of the suspended ground to the nearest side of the etch holes. We simulated new filter responses to reflect the real value of the changed etch hole offset caused by characteristics of negative photoresist. Return loss is distorted by the residue on the center conductor remained after sacrificial layer removing. By comparison of simulation and measurements, we concluded the residue on the resonator distorted the RF response worse than etch hole offset variation did.