• 제목/요약/키워드: optimal media

검색결과 939건 처리시간 0.027초

Coriolus versicolor와 Lentinus erodes의 영양배지 조성 및 배양조건의 최적화 (Optimization of Media Composition and Culture Conditions for the Mycelial Growth of Coriolus versicolor and Lentinus edodes)

  • 박경숙;이재성
    • KSBB Journal
    • /
    • 제6권1호
    • /
    • pp.91-98
    • /
    • 1991
  • The media compositions and culture conditions were optimized for mycelial growth of Coriolus versicolor and Lentinus edodes. Media composition for optimal growth of Coriolus versicolor was 2.0% glucose 0.4% peptone and 0.6% yeast extract. Media composition for optimal growth of Lenttnus edodes was 2.0% glucose 2.0% starch 0.4% bacto-soytone and 0.6% yeast extract. The media supplemented with KH2PO4, 0.046% KH2PO4 0.1% and MgSO4, .7H2O 0.05% supported better mycelial growth than the media without mineral salts. The optimum temperature for mycelial growth ranged from $25^{\circ}C$-28$^{\circ}C$. The optimum pH range for mycelial growth of Coriolus versicolor was 5.2~5.6 while that of Lentinus edodes appeared to be 5.75.

  • PDF

Experimental Evaluation of Filter Performance of Depth Filter Media Cartridge with Varying the Pleat Count and the Cartridge Assembly Arrangement

  • Hasolli, Naim;Park, Young-Ok;Rhee, Young-Woo
    • 한국입자에어로졸학회지
    • /
    • 제8권4호
    • /
    • pp.133-141
    • /
    • 2012
  • A new depth filter media was designed and samples of flat sheet as well as cartridge assembly were prepared and tested to evaluate the filtration performance and compare with the commercial product. The arrangement of the depth filter media layers is important to reach the optimal filtration parameters like filter pressure drop, particle collection efficiency and dust holding capacity. Initially, both flat sheet samples of new media and commercial product have been tested using standard test units. Tests with new depth filter media cartridges of various pleat count were conducted in order to find the optimal pleat count which would represent the lowest pressure drop. These tests give an insight on how the pleat count and the assembly configuration affect the performance of the depth filter media cartridge. By comparing the samples with a commercial product we could confirm relatively high filtration performance of the sample cartridge with pleat count 150 made of new depth filter media. The cartridge with the same pleat count exhibits better performance without the outer mesh.

Effects of Temperature and Culture Media Composition on Sporulation, Mycelial Growth, and Antifungal Activity of Isaria javanica pf185

  • Lee, Jang Hoon;Lee, Yong Seong;Kim, Young Cheol
    • 식물병연구
    • /
    • 제27권3호
    • /
    • pp.99-106
    • /
    • 2021
  • The fungal isolate Isaria javanica pf185 has potential as a mycopesticide because it demonstrates insecticidal activity against the green peach aphid and antifungal activity against Colletotrichum gloeosporioides. For commercialization of this isolate, determination of the optimal and least expensive culture conditions is required; however, these data are not currently available. This study describes the conditions for optimal development of conidia and production of metabolites for the biocontrol of the fungal pathogen. The optimal culture conditions were examined using cultures on solid agar and liquid media. High growth temperature enhanced spore formation but reduced antifungal activity in both solid and liquid media. The highest spore yield was obtained in a medium containing glucose as a carbon source and yeast extract as a nitrogen source. Soybean powder and wheat bran were effective nitrogen sources that promoted spore production and antifungal activity of the isolate. These results revealed the basic, cost-effective growth media for commercial production of a biopesticide with insecticidal and antifungal properties for use in integrated pest management.

Distortionless optimal stereoscopic image condition considering general viewing distance in the TV condition

  • Kim, Dong-Wook;Lee, Kwang-Ho;Chang, Eun-Young;Kim, Sung-Kyu
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
    • /
    • pp.703-706
    • /
    • 2008
  • Large distortion is made by toed-in camera configuration in the TV condition that has short viewing distance, when the gaze position of a stereoscopic image coincides with that of real space. Therefore, in the TV condition, we confirmed that the proper camera configuration is the modified parallel configuration, and found distortionless optimal stereoscopic image condition using this camera configuration.

  • PDF

배지와 배양조건이 검은비늘버섯의 균사생장에 미치는 영향 (Effect of Cultural Media and Conditions on the Mycelial Growth of Pholiota adiposa)

  • 이병석;서건식;이종수
    • 현장농수산연구지
    • /
    • 제7권1호
    • /
    • pp.74-80
    • /
    • 2005
  • 검은비늘버섯의 균사체와 기능성 물질 대량생산을 목적으로 배지의 종류, 배양온도, 배양중의 진탕 유무가 균사생장에 미치는 영향을 조사한 결과 균사생장 최적배지는 MCM, 최적온도는 25℃로 밝혀졌고 진탕배양을 하였을 경우 정치배양보다 약 2~3배의 균사생장을 보였다.

Optimal Media Conditions for the Detection of Extracellular Cellulase Activity in Ganoderma neo-japonicum

  • Jo, Woo-Sik;Park, Ha-Na;Cho, Doo-Hyun;Yoo, Young-Bok;Park, Seung-Chun
    • Mycobiology
    • /
    • 제39권2호
    • /
    • pp.129-132
    • /
    • 2011
  • To determine the optimal media conditions for the detection of the extracellular cellulase activity in Ganoderma neo-japonicum, we varied three media conditions: dye reagent, pH, and temperature. We evaluated the use of four dyes, Congo red, phenol red, remazol brilliant blue, and trypan blue. To observe the effect of pH on the chromogenic reaction, we tested media ranging from 4.5 to 8.0. To research the effect of temperature on the clear zone and the fungus growing zone, we tested temperatures ranging from 15 to $35^{\circ}C$. On the whole, the best protocol called for Ganoderma neo-japonicum transfer onto media containing Congo red with a pH of 7.0, followed by incubation at $25^{\circ}C$ for 5 days. Our results will be useful to researchers who study extracellular enzyme activity in Ganoderma neo-japonicum.

Intelligent Lighting Control using Wireless Sensor Networks for Media Production

  • Park, Hee-Min;Burke, Jeff;Srivastava, Mani B.
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • 제3권5호
    • /
    • pp.423-443
    • /
    • 2009
  • We present the design and implementation of a unique sensing and actuation application -- the Illuminator: a sensor network-based intelligent light control system for entertainment and media production. Unlike most sensor network applications, which focus on sensing alone, a distinctive aspect of the Illuminator is that it closes the loop from light sensing to lighting control. We describe the Illuminator's design requirements, system architecture, algorithms, implementation and experimental results. The system uses the Illumimote, a multi-modal and high fidelity light sensor module well-suited for wireless sensor networks, to satisfy the high-performance light sensing requirements of entertainment and media production applications. The Illuminator system is a toolset to characterize the illumination profile of a deployed set of fixed position lights, generate desired lighting effects for moving targets (actors, scenic elements, etc.) based on user constraints expressed in a formal language, and to assist in the set up of lights to achieve the same illumination profile in multiple venues. After characterizing deployed lights, the Illuminator computes optimal light settings at run-time to achieve a user-specified actuation profile, using an optimization framework based on a genetic algorithm. Uniquely, it can use deployed sensors to incorporate changing ambient lighting conditions and moving targets into actuation. Experimental results demonstrate that the Illuminator handles various high-level user requirements and generates an optimal light actuation profile. These results suggest that the Illuminator system supports entertainment and media production applications.

다중 스트림을 이용한 객체기반 MPEG-4 컨텐트의 적응 기법 (Adaptation for Object-based MPEG-4 Content with Multiple Streams)

  • 차경애
    • 한국산업정보학회논문지
    • /
    • 제11권3호
    • /
    • pp.69-81
    • /
    • 2006
  • In this paper, an adaptive algorithm is proposed in streaming MPEG-4 contents with fluctuating resource amount such as throughput of network conditions. In the area of adaptive streaming issue, a lot of researches have been made on how to represent encoded media(such as video) bitstream in scalable way. By contrast, MPEG-4 supports object-based multimedia content which is composed of various types of media streams such as audio, video, image and other graphical elements. Thus, it can be more effective to provide individual media streams in scalable way for streaming object-based content to heterogeneous environment. The proposed method provides the multiple media streams corresponding to an object with different qualities and bit rate in order to support object based scalability to the MPEG-4 content. In addition, an optimal selection of the multiple streams for each object to meet a given constraint is proposed. The selection process is adopted a multiple choice knapsack problem with multi-step selection for the MPEG-4 objects with different scalability levels. The proposed algorithm enforces the optimal selection process to maintain the perceptual qualities of more important objects at the best effort. The experimental results show that the set of selected media stream for presenting objects meets a current transmission condition with more high perceptual quality.

  • PDF

Optimal design of slider for stable flying characteristic using 4${\times}$l near-field probe array

  • Jung Min-su;Hong Eo-Jin;Park Kyoung-Su;Park No-Cheol;Yang Hyun-Seok;Park Young-Pil;Lee Sung-Q;Park Kang-Ho
    • 정보저장시스템학회:학술대회논문집
    • /
    • 정보저장시스템학회 2005년도 추계학술대회 논문집
    • /
    • pp.171-176
    • /
    • 2005
  • In the information storage development, the trend of the storage device is to increase the recording density. Among such an effort, near-field probe recording is spotlighted as a method of high increasing recording density. For the successfully embodiment of storage device, the actuating mechanism of near-field probe is essentially designed. In this paper, we suggest the slider similar with conventional HDDs and design the slider using near- field probe for the purpose of applying the slider in order to control gap between probe and media. The most important object of slider design is to guarantee the flying ability and stability. For achievement of these design objects, we perform two step of optimal design process. The media is mod! eled as random displacement, which is only considered roughness of disk surface. The design slider is analyzed with dynamic state in assumed media. At this process, the optimal model is confirmed to stable flying stability.

  • PDF