야생초 가공에 의한 종자분사 공법 재료화 기술 ( Technique Development of Wildgrasses for Hydroseeding Material )

주영규,김성균 한국잡초학회·한국잔디학회 1997 Weed & Turfgrass Science Vol.11 No.3

비대칭 철골단면을 이용한 A-TEC Beam의 합성거동 ( Composite Action of the A-TEC Beam with Asymmetric Steel Section )

주영규,김대영,정광량,김상대 대한건축학회 2001 大韓建築學會論文集 : 構造系 Vol.17 No.9

야생초 가공에 의한 종자분사공법 재료화 기술

주영규,김성균 한국잔디학회 1997 한국잔디학회지 Vol.11 No.3

This study was performed to develope the method of wildgrass to process as hydroseeding material which is a most popular revegetation method for Slope areas through the control of soil eroison and stability by seeding grasses. The wildgrass material for the processing were harvested at Suwon, Kyungki-do and Wonju, Kangwon-do in 1994. The investigations were established in laboratory for pot and field experiment with seven treatments by harvesting date and place in 1995. Results indicated that wildgrass harvested field in open space or road side was able to be used as hydroseeding material by proper processing. It was possible to substitute wildgrass seed to conrrnercial turfgrass seed, and plant tissue to mulching fiber by drying and crushing process. Germination of wildgrass seed was relatively slower than control (20g /$m^2$ turfgrass seed) in early stage of 20 days, but surface revegetation rate was higher in 50 days at wildgrass plot than control applied by normal hydroseeding method. Mixture of 5g /$m^2$ of cool season turfgrass seed to wildgrass material increased the rate of early stage of germination and surface revegetation. The application of wildgrass as hydroseeding material showed more naturalistic scenery than rutine hydroseeding with imported cool season turfgrass seed. Key words: Rydroseeding, Turfgrass, Wildgrass, Revegetation.

Bentgrass 생육에 미치는 Polymer Coated Urea의 효과

주영규,이재필,N.E.Cheistans 한국잔디학회 1997 한국잔디학회지 Vol.11 No.2

The objective of this study was to observe the differences in growth of creeping bentgrass turf to 'polymer coated urea fertilizer' and 'uncoated urea fertilizer', and to analyze durability of fertilizer effect with the 'polymer coated urea'. The experiment was initiated on June 3, 1996, at the Iowa State University Horticulture Research Station, north of Ames, Iowa. The experiment was conducted on an area of 'Penneagle' Creeping bentgrass(Agrostis palustris) maintained at fair-'way mowing height (1.3cm). The study was repeated at the same arrangement beginning on July 25, 1996. Visual quality data, clipping fresh and dry weight, and nitrogen(N) content in the clippings were taken weekly. Quality of the turf increased with increasing N rate. While quality ratings were higher for turf receiving polymer coated urea than for turf receiving uncoated urea at several times following treatment, but not significant. Fresh and dry clipping weights were quite variable during the trial. Visual quality rating and clipping yields improved with increasing rates of N but these differences were not statically significant between polymer coated and uncoated urea treatment. The durability of fertilizer efficiency in polymer coated urea was not last longer compare with uncoated urea from two weeks after treatment. Higher rates of N application increased the concentration of N in tissue but no significant differences between turf plots receiving polymer coated and uncoated urea. Key words: Polymer coated urea, Creeping bentgrass, Fertilizer, Turfgrass.

포스터를 이용한 학회 발표법

주영규 한국잔디학회 1997 한국잔디학회지 Vol.11 No.2

A major purpose of a scientific meeting is the exchange of information. Traditionally, authors have preferred to present their research in an oral format. However, poster presentations are becoming more popular every year. Today, poster and oral presentation are recognized as being of equal status, Regardless of which format you select, remember that the poster or oral presentation must he carefully planned, clear and concise, oriented to transfer information effectively, and hold the attention of the learner.

Pseudomonas spp.의 Rhizoctonia solani 및 Pythium spp. 병원균에 대한 길항작용

주영규,한정훈 한국잔디학회 1994 한국잔디학회지 Vol.8 No.1

Attempts were made to investigate the antagonistic activity of soil borne microorganisms Pseudomonas spp. and Trichoderma spp. against to the pathogens of turf diseases Rhizoctionia solani spp. and Pythiom spp. in vitro by a dual culture bioassay. Inhibition zone between the edge of the my-celium and the margin of each antagonistic bacteria, Pocudontonas, on potato dextrose agar was measured 3 days after incubation at 28˚C. Psudomonas spp. showed relatively high inhibition of mycelium growth of R. solani AG-i and Pythium spp. which cause brown patch and pythium blight, respectively. Antagonistic fungi Trichodenma spp. also showed effective inhibition against mycelium growth of both pathogens, more proper methods of measuring the inhibition effects were required because of fast growth of Trichodenna hypae. Brown patch and pythium blight both, re-quire most higher rate of fungicide use to control in golf curses in Korea. Application of antagon-istic microorganisms are useful as biological resources an approach to sole environmental contamination.

벽면 요철을 고려한 동조액체댐퍼의 고유진동수 및 감쇠계수의 실험적 평가

주영규 대한건축학회 2002 大韓建築學會論文集 : 構造系 Vol.18 No.2

Water tanks at the top of tall buildings can be directly remodeled as a vibration control device, TLD. Since most of the tank in korea has embossment on the wall, the structural characteristics are different from those of other countries. As the damping ratio of the TLD depends on several factors such as the magnitude, the frequency of applied load, the shape of the tank, wall roughness, and so forth, it is difficult to evaluate the control performance of the tank exactly. In this paper, the characteristics of TLD with embossments are experimentally evaluated. The parameters of the test are number of wire screens, aspect ratios, forcing frequencies, and excitation magnitudes. The equations for frequency and damping ratio depending on specific parameters are proposed and verified by comparing with test results. It is concluded that the proposed equations are reliable for the evaluation of the characteristics of TLD with embossments.

유기물의 토양 개량 효과 측정

주영규 한국잔디학회 1993 한국잔디학회지 Vol.7 No.1

Much attention has been given recently to solve the environmental contamination in golf courses Changing to culture practice rather than chemical practice that depends on pesticides and fertilizers is a hot issue in golf courses or grasslands. Organic soil conditioners improve soil-plant envirormental conditions rich in physical properties. In this study, measuring systems to evaluate soil conditioning effects were set up for on-site purpose. After establishing the methodology for evaluating soil conditioner effects, 2 kinds of organic conditioners were rested for examination. The systems for the methodology included a set of simulating equipment for field capacity, an impact type soil column compactor, and an infiltration-percolation system. Test results using the systems showed bulk density and infiltration rate of mixed soil were decreased at highter rates of conditioner, but total porocities were increased. Increased porocities were most capillary pore space which has a positive effect on soil water potential. The systems and methodology in this study seem to have an efficiency to measure the effects of soil conditioner on site purpose.

벽면 요철을 고려한 동조액체댐퍼의 고유진동수 및 감쇠계수의 실험적 평가 ( An Experimental Evaluation of Fundamental frequency and Damping Ratio for Tuned Liquid Damper Considering Blocks on Wall 0

주영규 대한건축학회 2002 大韓建築學會論文集 : 構造系 Vol.18 No.2

산업폐기물의 잔디용 유기질 비료화에 관한 연구

주영규 한국잔디학회 1991 한국잔디학회지 Vol.5 No.2

The sludge, a waste of brewery industries, was examined for potentials as a natural organic fertilizer (or soil conditioner) for lawn. Trial products were measured for changes of physical, chemical properties in laboratory and seed germination and seedling growth in green house were also tested. The results are as the following:1The sludge from distilled liquor brewery contained high quantity of organic matter which had proper physical and chemical properties for lawn fertilizer (natural organic fertilizer, soil conditioner, top-dressing mix) . It showed good characteristics in handling and capabilities to be developed as commercial products for golf courses. 2.Sludge from beer company needs proper treatment to improve physical properties for futher degradiation. It is because aggregation of the sludge particles prevented microbial activities and changing to soluble form. 3.Green carbon can be used as carbon source for organic fertilizer production using brewery sludge, but it should not contain wood extract which inhibit seed germination and seedling growth.