• Title/Summary/Keyword: U&I

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Growth and Yield According to Various Bending Methods when Planting Seedlings Directly on Coir Substrate Slabs in Paprika Cultivation (파프리카 묘의 직접 정식 시 절곡 방법에 따른 생육 및 생산량)

  • Hur, Young Mun;Ko, Baul;Ku, Yang Gyu;Kim, Chul Min;Kim, Ho Cheol;Bae, Jong Hyang
    • Journal of Bio-Environment Control
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    • v.30 no.4
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    • pp.251-256
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    • 2021
  • This study aimed to compare the growth and production of paprika (Capsicum annuum) planted directly on a coir substrate slab according to the bending methods. The existing root direction was bent to 0° (I-type), 90° (L-type), and 180° (U-type), respectively. The weekly average growth such as stem length, diameter, and leaf area tended to be the highest in the I-type bending, but there was no statistical difference. Root weight at 46 weeks after planting was also about 1.3 to 1.7 times heavier in the I-type than the L- and U-type bending. As the yield produced by 330 plants by bending methods, the initial yield was the highest in the U-bending, but then the highest in the I-bending. Accordingly, the total yield was the highest in I-bending. Consequently, when planting on coir substrates directly in paprika cultivation, the I-type bending should be considered most suitable for securing root and plant vigor in the early stages of planting and for enhancing fruiting stability.

Microstructure and Superconducting Properties of (Bi,Pb)-Sr-Ca-Cu-O-(Ag, Au, Mg) Composites ((Bi,Pb)-Sr-Ca-Cu-O-(Ag, Au, Mg) 복합체의 미세구조와 초전도 특성)

  • 이민수
    • Journal of the Korean Ceramic Society
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    • v.40 no.5
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    • pp.447-454
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    • 2003
  • Samples were prepared by the solid-state reaction method. The nominal composition of the samples was B $i_{1.84}$P $b_{0.34}$S $r_{1.91}$C $a_{2.03}$C $u_{3.06}$ $O_{10+{delta}$ prepared from powder of B $i_2$ $O_3$, PbO, SrC $O_3$, CaC $O_3$, and CuO. They were pulverized, mixed with AgO, A $u_2$ $O_3$and MgO of 50 wt%. Finally, they were sintered at 820 to 85$0^{\circ}C$ in air. The structural characteristics, the microstructure of surface and the critical temperature with respect to the each samples were analyzed by XRD, $T_{c}$, SEM and EDS respectively. It was found that the the critical temperature of the silver oxide additive samples (99.58 K) is higher than those of gold or magnesium oxides additive samples, but all those values are lower than that of pure Bi-2223 phase. The microstructure of surface showed the tendency which the AgO additive samples become more minuteness than A $u_2$ $O_3$ and MgO additive samples.s.samples.s.

U.S. Forest Service Research : Its Administration and Management

  • Krugman, Stanley L.
    • Journal of Korean Society of Forest Science
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    • v.76 no.3
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    • pp.243-248
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    • 1987
  • The U.S. Forest Service administers the world's largest forestry research organization. From its modest beginning in 1876, some 30 years before the United States national forest system was established, the research branch has devoted its effort to meet current and future information needs of the forestry community of the United States, not just for the U.S. Forest Service. The research branch is one of three major administrative units of the U.S. Forest Service. The others being the National Forest System and State and Private Forestry. Currently the National Forest System comprises 155 national forests, 19 national grasslands, and 18 utilization projects located in 44 states. Puerto Rico, and the Virgin Islands. The National Forest System manages these areas for a large array of uses and benefits including timber, water, forage, wildlife, recreation, minerals, and wilderness. It is through the State and Private Forestry branch that the U.S. Forest Service cooperates and coordinates forestry activities and programs with state and local governments, forest industries, and private landowners. These activities include financial and technical assistance in disease, insect, and fire protection ; plan forestry programs ; improve harvesting and marketing practices ; and transfer forestry research results to user groups. Forestry research is carried out through eight regional Forest Experiment Stations and the Forest Product Laboratory. Studies are maintained at 70 administrative sites, and at 115 experimental forest and grasslands. All of the current sciences that composed modern forestry are included in the research program. These range from forest biology (i. e. silviculture, ecology, physiology, and genetics) to the physical, mathematical, engineering, managerial, and social sciences. The levels of research range from application, developmental, and basic research. Research planning and priority identification is an ongoing process with elements of the research program changing to meet short-term critical information needs(i. e. protection research) to long-term opportunities(i. e. biotechnology). Research planning and priority setting is done in cooperation with National Forest Systems, forest industries, universities, and individual groups such as environmental, wilderness, or wildlife organizations. There is an ongoing review process of research administration, organization, and science content to maintain quality of research. In the U.S. Forest Service the research responsibility is not completed until the new information is being applied by the various user group : I. e. technology transfer program. Research planning and development in the U.S. Forest Service is a dynamic activity. Porgrams for the year 2000 and beyond are now in the planning stage.

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Choosing a Financing Vehicle for Energy-Efficiency Projects for Federal Sites (I) (연방정부 시설 에너지효율 향상 프로젝트의 재정지원 방법 선택 (I))

  • U.S. Department of Energy U.S. Department of Energy
    • The Magazine for Energy Service Companies
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    • s.8
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    • pp.64-73
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    • 2001
  • 미국 에너지부는 지난 2000년 4월 18일 연방 에너지 관리 프로그램의 일환으로 연방정부와 그 산하 기관들에 대한 에너지효율 개선 프로젝트에 대한 재정지원 방법을 규정한 초안을 마련했다. 이 초안은 그해 9월 15일 확정되어 현재 적용되고 있는 것으로 ESCO를 통한 ESPC방법과 설비회사를 통한 UESC방법을 소개하고 있다. 국내 ESCO사업의 발전에 도움이 되고자 그 전문을 3회에 걸쳐 원문과 함께 번역, 게재하기로 한다.

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ERROR ANALYSIS OF THE hp-VERSION UNDER NUMERICAL INTEGRATIONS FOR NON-CONSTANT COEFFICIENTS

  • KIM, IK-SUNG
    • Honam Mathematical Journal
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    • v.27 no.2
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    • pp.317-332
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    • 2005
  • In this paper we consider the hp-version to solve non-constant coefficients elliptic equations on a bounded, convex polygonal domain ${\Omega}$ in $R^2$. A family $G_p=\{I_m\}$ of numerical quadrature rules satisfying certain properties can be used for calculating the integrals. When the numerical quadrature rules $I_m{\in}G_p$ are used for computing the integrals in the stiffness matrix of the variational form we will give its variational form and derive an error estimate of ${\parallel}u-{\widetilde{u}}^h_p{\parallel}_{1,{\Omega}$.

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A Detection Matrix for $3N^n$ Search Design

  • Um, Jung-Koog
    • Journal of the Korean Statistical Society
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    • v.12 no.2
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    • pp.61-68
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    • 1983
  • A parallel flats fraction for the $3^n$ factorial experiment is defined as the union of flats, ${t$\mid$At=C_i(mod 3)}, i=1,2,\cdot,f$, in EG(n,3) and is symbolically written as At=C where A is of rank r. The A matrix partitions the effects into u+1 alias sets where $u=(3^{n-r}-1)/2$. For each alias set the f flats produce an alias component permutation matrix (ACPM) with elements from $S_3$. In this paper, a detection vector of the ACPM was constructed for each combination of k or fewer two-factor interactions. Also the relationship between the detection vectors has been shown.

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DUAL SURFACES DEFINED BY z = f(u) + g(ν) IN SIMPLY ISOTROPIC 3-SPACE ${\mathbb{I}}{\frac{1}{3}}$

  • Cakmak, Ali;Karacan, Murat Kemal;Kiziltug, Sezai
    • Communications of the Korean Mathematical Society
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    • v.34 no.1
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    • pp.267-277
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    • 2019
  • In this study, we define the dual surfaces by z = f(u) + g(v) and also classify these surfaces in ${\mathbb{I}}{\frac{1}{3}}$ satisfying some algebraic equations in terms of the coordinate functions and the Laplace operators according to fundamental forms of the surface.

NOTES ON GENERALIZED DERIVATIONS ON LIE IDEALS IN PRIME RINGS

  • Dhara, Basudeb;Filippis, Vincenzo De
    • Bulletin of the Korean Mathematical Society
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    • v.46 no.3
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    • pp.599-605
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    • 2009
  • Let R be a prime ring, H a generalized derivation of R and L a noncommutative Lie ideal of R. Suppose that $u^sH(u)u^t$ = 0 for all u $\in$ L, where s $\geq$ 0, t $\geq$ 0 are fixed integers. Then H(x) = 0 for all x $\in$ R unless char R = 2 and R satisfies $S_4$, the standard identity in four variables.