This study develops a new device system for measuring a slope of object with non-adhesive, non-contact and non-face-to-face, namely Inclinometer Slope Laser Measuring (ISLM), that is applicable in the field. This system includes cradle, laser, camera, and computer and the filming and is performed after laser projection at programmed intervals. After measuring the amount of displacement converted to numerical values, these values can then be transferred to the office using the selected data transmission method. The obtained results from the test carried out to verify the reliability of the ISLM system indicated that the ISLM system can measure with accurately level of 0.1mm/Pixel at 1m distance and when increasing the camera resolution, the precision might increase proportionally. Therefore, the proposed measure system may widely apply on-site for various constructions, especially, in the case of object with very high surface temperature where exhibits difficulty to directly measure the adjacent structures. However, due to the sensitive reaction to the illuminance, this method can be applied with caution at times of large changes in illuminance, such as at dawn and at dusk.

Anodic aluminum oxide (AAO) has been widely used for the development and fabrication of nano-powder with various morphologies such as particle, wire, rod, and tube. So far, many researchers have reported about shape control and fabrication of AAO films. However, they have reported on the shape control with different diameter and length of anodic aluminum oxide mainly. We present a combined mild-hard (or hard-mild) anodization to prepare shape-controlled AAO films. Two main parameters which are combination mild-hard (or hard-mild) anodization and run-time of voltage control are applied in this work. The voltages of mild and hard anodization are respectively 40 and 80 V. Anodization was conducted on the aluminum sheet in 0.3 mole oxalic acid at 4oC. AAO films with morphologies of varying interpore distance, branch-shaped pore, diameter-modulated pore and long funnel-shaped pore were fabricated. Those shapes will be able to apply to fabricate novel nano-materials with potential application which is especially a support to prevent volume expansion of inserted active materials, such as metal silicon or tin powder, in lithium ion battery. The silicon powder electrode using an AAO as a support shows outstanding cycle performance as 1003 mAh/g up to 200 cycles.

4 세대 무선망에서 이 기종 엑세스 망간의 핵심기술은 망 선택기법과 호 수락제어이다. 본 연구에서는 차세대 무선망의 이 기종 엑세스 무선망으로 CDMA-OFDMA 망을 고려하여, 이 망에 적합한 퍼지 신경망 분산 상향링크 호 수락제어를 제안한다. 제안된 기법은 이종 무선망에서 원하는 신규호의 차단확률과 서비스 진행 중인 호의 강제종료확률을 만족시키면 서, 무선자원의 효율적인 사용을 목적으로 한다. 호 수락의 결정은 무선 엑세스 망의 상향 링크에서 퍼지 추론과 신경망 학습에 의한 추정된 전력값 과 미리 결정한 상향 전력 한계값 을 비교하여 모바일 터미널에서 결정한다. 시뮬레이션을 통하여 제안한 기법의 성능을 신경 망 입력노드의 수에 따른 평균 거절율과 섹터 당 평균 이동국 수에 따른 호 손실율 및 거 절율을 평가 하였다. 그 결과 제안된 기법을 사용하는 무선망은 원하는 서비스 품질을 만족 하면서 부하의 증가에 따른 효율적인 호 수락제어가 이루어짐을 보인다.

미생물 응집제 생산균주를 토양에서 분리하고 응집활성이 가장 높은 CH-23 균주를 분리하여 Bacillus megaterium CH-23으로 동정하였다. 분리균의 응집제 생산조건을 조사한 결과 수크로오스 2%, NaNO_3 3%, K_2HPO_4 0.1%, NaCl 0.5%, MgSO_4·7H_2O 0.5%, tryptone 0.01%의 구성된 배지를 pH 7.0으로 조절하고 25∼30℃에서 120rpm으로 배양하였을 때 정상기에서 응집활성이 가장 높았다. 배지에 Mn^2+(0.01% MnSO_4)을 가하면 약 57%의 응집활성이 증가되었고 Mg^2+(0.01% MgSO_4·7H_2O)와 Ca^2+(0.01% CaCO_3)도 응집활성을 48%와 33%씩 증가시켰다.

본 연구의 목적은 L. lactis 와 Leu. citreum 균주를 혼합 배양할 수 있는 배지 조성을 개발하여 이를 통해 김치의 발효 속도 조절을 통한 숙성도 맞춤형 김치를 제조하는 것이다. 먼저 김치 육수의 재 료인 북어, 양파, 무, 다시마, 건고추, 건새우, 대파, 건표고 등을 혼합 또는 단일로 하여 육수를 제조한 후, 이들이 L. lactis 증식에 미치는 영향을 알아본 결과, 건새우를 제외한 모든 재료가 증식을 억제하는 결과를 나타내었다. 질소원, 탄소원 및 성장 촉진 인자로 서 tryptone, peptone, yeast extract, lactose, ascorbic acid 등을 이용하였고 pH 완충제로는 potassium citrate를 사용하였 다. L. lactis가 잘 생장하는 M17배지와 균 생장 및 항균활성을 비 교 평가하여 최종적으로 배지 조성은 건새우 육수에 yeast extract 3%, ascorbic acid 0.05%, potassium citrate 1%, lactose 3% 로 하였다(식용 액체배지1). 개발된 식용 액체배지 1에 L. lactis 에 의해 생장 및 증식에 저해를 받지 않고 만니톨 생성능이 우수한 Leu. citreum을 혼합 배양하고자 glucose, maltose, fructose, sucrose 등 여러 가지 탄소원을 달리하여 Leu. citreum의 생육정 도를 살펴본 결과, 0.1-1%의 농도로 maltose 또는 fructose를 첨 가했을 때 선택적으로 잘 증식하였다. 이어서 발효 조절을 통한 숙 성도 맞춤형 김치를 제조하기 위하여 식용배지 1에다 maltose를 0%, 0.1%, 0.2%, 0.3%의 농도로 달리 첨가한 식용배지 2를 제조 하였다. 여기에 L. lactis 와 Leu. citreum을 혼합 배양한 후 김치 에 첨가하여 10℃에서 5일간 발효시킨 결과, 각 김치별로 pH 5.3, pH 4.9, pH 4.7, pH 4.5를 나타내어 각기 숙성도가 다른 특징을 보여주었다. 결론적으로 본 연구에서 개발한 식용 액체 배지를 사 용하여 L. lactis를 배양한 후 그 배양액을 김치에 첨가함으로써 종 균의 활성 및 생장을 극대화시킬 수 있었다. 또한 액체 배지 조성의 조절을 통해 Leu. citreum 균주와의 혼합 배양이 가능하였고, 이를 이용하여 김치 발효 속도 조절을 통한 숙성도 맞춤형 김치를 제조 할 수 있었다.

To develope a microbial weed control agent, HCN-producing bacteria were isolated, and their characteristics were investigated. A selected strain of WA15 was identified as Pseudomonas koreensis by morphological, cultural, biochemical and 16S rRNA gene analyses. The conditions for HCN production was investigated by a One-Variable-at-a-Time (OVT) method. The optimal HCN production conditions were tryptone 1%, glycine 0.06%, NaCl 1% , and an initial pH and temperature of 5.0 and 30℃, respectively. The major component for HCN production was glycine. Under optimal conditions, HCN production was about 3 times higher than that of the basal medium. The WA15 strain had physiological activities, such as indoleacetic acid that was associated with the elongation of plant roots and siderophore and ammonification inhibiting fungal growth, and produced hydrolytic enzymes, such as cellulase, pectinase and lipase. The strain was able to inhibit the growth of phytopathogenic fungi, such as Rhizoctonia solani, Botrytis cinerea and Fusarium oxysporum, by the synergistic action of volatile HCN and diffusible antimicrobial compounds. A microscopic observation of R. solani that was teated with the WA15 strain showed morphological abnormalities of fungal mycelia, which could explain the role of the antimicrobial metabolites that were produced by the WA15 strain. The volatile HCN produced by the WA15 strain was also found to have insecticidal activity against termites. Our results indicate that Pseudomonas koreensis WA15 can be applied as a microbial agent for weed control and also as a termite repellent. Furthermore, it could be applied as a microbial termiticidal agent to replace synthetic insecticides.

The Industrial Ethernet technology enables advanced control architectures and offers several advantages for high precision multiple motors actuation. This paper presents the implementation and analysis of a motor drive with EtherCAT, an industrial standard for real time Ethernet. Considering the characteristics of the implemented software and the network interface, the motion and time-response of motor actuation for the networked Mobile Inverted Pendulum have been analyzed. Using the analysis with the task execution times measured from the developed drive, the performance characteristics of the drive in respect of the maximum achievable throughput have been verified by comparing to the conventional RS232.

This study evaluated the applicability of visible-light-driven N- and S-doped titanium dioxide(TiO2) for the control of low-level dimethyl sulfide(DMS) and dimethyl disulfide(DMDS). In addition, a photocatalytic unit(PU)-adsorption hybrid was evaluated in order to examine the removal of DMS and DMDS which exited the PU and a gaseous photocatalytic byproduct(SO2) which was generated during the photocatalytic processes. Fourier-Tranform-Infrared(FTIR) spectrum exhibited different surface characteristics among the three-types of catalysts. For the N- and S-doped TiO2 powders, a shift of the absorbance spectrum towards the visible-light region was observed. The absorption edge for both the N- and S-doped TiO2 was shifted to λ 720 nm. The N-doped TiO2 was superior to the S-doped TiO2 in regards to DMS degradation. Under low input concentration(IC) conditions(0.039 and 0.027 ppm for DMS and DMDS, respectively), the N-doped TiO2 revealed a high DMS removal efficiency(above 95%), but a gradual decreasing removal efficiency under high IC conditions(7.8 and 5.4 ppm for DMS and DMDS, respectively). Although the hybrid system exhibited a superior characteristic to PU alone regarding the removal efficiencies of both DMS and DMDS, this capability decreased during the course of a photocatalytic process under the high IC conditions. The present study identified the generation of sulfate ion on the catalyst surface and sulfur dioxide(maximum concentrations of 0.0019 and 0.0074 ppm for the photocatalytic processes of DMS and DMDS, respectively) in effluent gas of PU. However, this generation of SO2 would be an insignificant addition to indoor air quality levels.