• Title/Summary/Keyword: i-SEED

Search Result 703, Processing Time 0.033 seconds

Fabrication of Poly Seed Layer for Silicon Based Photovoltaics by Inversed Aluminum-Induced Crystallization (역 알루미늄 유도 결정화 공정을 이용한 실리콘 태양전지 다결정 시드층 생성)

  • Choi, Seung-Ho;Park, Chan-Su;Kim, Shin-Ho;Kim, Yang-Do
    • Korean Journal of Materials Research
    • /
    • v.22 no.4
    • /
    • pp.190-194
    • /
    • 2012
  • The formation of high-quality polycrystalline silicon (poly-Si) on relatively low cost substrate has been an important issue in the development of thin film solar cells. Poly-Si seed layers were fabricated by an inverse aluminum-induced crystallization (I-AIC) process and the properties of the resulting layer were characterized. The I-AIC process has an advantage of being able to continue the epitaxial growth without an Al layer removing process. An amorphous Si precursor layer was deposited on Corning glass substrates by RF magnetron sputtering system with Ar plasma. Then, Al thin film was deposited by thermal evaporation. An $SiO_2$ diffusion barrier layer was formed between Si and Al layers to control the surface orientation of seed layer. The crystallinity of the poly-Si seed layer was analyzed by Raman spectroscopy and x-ray diffraction (XRD). The grain size and orientation of the poly-Si seed layer were determined by electron back scattering diffraction (EBSD) method. The prepared poly-Si seed layer showed high volume fraction of crystalline Si and <100> orientation. The diffusion barrier layer and processing temperature significantly affected the grain size and orientation of the poly Si seed layer. The shorter oxidation time and lower processing temperature led to a better orientation of the poly-Si seed layer. This study presents the formation mechanism of a poly seed layer by inverse aluminum-induced crystallization.

Effects of Safflower Seeds on the Serum Levels of Insulin-like Growth Factors, Insulin-like Growth Factor Binding Protein-3 and BALP in Osteoporosis Induced-ovariectomized Rats (흰쥐의 난소제거로 유발한 골다공증에 대한 홍화씨의 IGFs, IGF binding protein-3 그리고 BALP에 대한 혈청내 효과)

  • Kim, Soo-mi;Park, In-hyuk;Kim, Nam-soo
    • Journal of Veterinary Clinics
    • /
    • v.20 no.3
    • /
    • pp.263-273
    • /
    • 2003
  • This study was carried out to investigate the effects of the Korean Safflower (Carthamus inctorius L) seed powder on serum level of hormones and trabecula area during the recovery from osteoporosis induced ovariectomized rats. Four month-old rats were ovariectomized (OVX), remained untreated for 8 weeks, and were subsequently administered safflower seed (0.03 g/kg) every other day 30 for days. We examined the effects of treated safflower seed every 10 days on ovariectomy-related changes in Insulin-like Growth Factors, Insulin-like Growth Factor binding protein-3 (IGFBP-3), Estrogen, Bone-specific alkaline phosphotase, Calcium, and Phospotase in the serum, and also histomorphology of the proximal fibula metaphysis and femur/body weight rate. Ten and 20 days after safflower seed treatment in OVX rats, serum levels of IGF-I, -II and IGFBP-3 were not different from the Sham and OVX groups. In 30 days, serum levels of IGF-I,-II and IGFBP-3 were higher after safflower seed treatment in OVX rats as compared to the other two groups (p<0.05). Bone alkaline phosphatase levels were increased through safflower seed treatment in OVX rats compared to the other two groups in 30 days. There were no differences between OVX and safflower seed treated OVX rats in serum levels of estrogen and femur/body weight rate, but estrogen levels for the sham group were higher than for the other two groups. The safflower seed is increased to serum levels of IGFs, IGFBP-3 and BALP of osteoporosis induced by ovariectomized rats. Thus, we conclude that the safflower seed is a possible role for improvement of osteoporosis induced-ovariectomized rats.

Effect of Mullite on High Alumina Refractory (I) (고 알루미나질 내화물에 미치는 Mullite의 영향(I))

  • 김인섭;김세훈;박주석;강지연;이경희;이병하
    • Journal of the Korean Ceramic Society
    • /
    • v.38 no.2
    • /
    • pp.128-136
    • /
    • 2001
  • 본 연구에서는 kaolin을 이용하여 반기상법, gel coating법, seed 첨가법으로 mullite를 합성하였으며 mullite 15 wt%를 고 알루미나질 내화물 원료에 첨가하여 내화물 시편을 제조하였다. 제조된 시편의 물성을 분석한 결과 seed 첨가법으로 제조된 mullite를 첨가한 시편의 물성이 338.60 MPa의 꺾임강도와 9,427 kgf/$\textrm{cm}^2$의 압축강도값을 나타내었다. 제조된 시편의 내화도 및 잔존선팽창수축률을 측정한 결과 나머지 두가지 방법으로 합성한 mullite나 일반적인 고 알루미나질 내화물에 비하여 좋은 특성을 나타내었다.

  • PDF

Studies on the Composition of Seed Oils of Korean Plants(I) -Composition of the sterol fraction of Trichosanthes kirilowii (한국산 식물 종자유의 성분에 관한 연구(I) -하놀타리중의 스테롤)

  • 정보섭;고영수
    • YAKHAK HOEJI
    • /
    • v.23 no.1
    • /
    • pp.51-55
    • /
    • 1979
  • "Ha-Neul-Ta-Ri" (Trichosanthes kirilowii Max., Cucurbitaceae) cultivated in Korea and used in popular medicine, was investigated for sterol composition of the seed oil. This seed oil contains unusual sterols having ${\delta}^{7, 22}_-$, ${\delta}^{7, 24}_-$ and ${\delta}^{7, 22, 25}_-$ di and trienols. ${\delta}^{7, 22}_-$ Stigmastadienol and ${\delta}^{7, 22, 25}_-$ Stigmastatrienol were identified as the major sterols in the seed oil of Trichosanthes kirilowii by gas loiquid chromatographic analysis. The results showed that contents of the seed sterols were campesterol 1.0-1.2%, stigmasterol 1.5-1.7%, ${\delta}^{7}_-$ campstenol 0.6-0.8%, sitosterol 10.6-11.4%, ${\delta}^{7, 22}_-$ stigmastadienol 39.1-41.8%, ${\delta}^{7, 22, 25}_-$ stigmastatrienol 28.9-29.3%, ${\delta}^{7, 25}_-$ stigmastadienol 14.9-15.5% and ${\delta}^{7, 24}_-$ stigmastadienol 0.7-1.0%.

  • PDF

Effects of Mepiquat Chloride and Trinexapac-Ethyl on Oil Composition, Seed Yield and Endogenous Gibberellins in Flax

  • Kim, Sang-Kuk;Lee, Hee-Dong;Choi, Hong-Jib
    • Korean Journal of Plant Resources
    • /
    • v.24 no.6
    • /
    • pp.696-701
    • /
    • 2011
  • The aim of this field experiment was to investigate the possible effects of mepiquat chloride (TE) and trinexapac-ethyl (MC) on oil composition, seed yield and endogenous gibberellins content of flax cultivar. Foliar application of plant growth retardants mepiquat chloride (0.897, 1.794 and 2.691 kg a.i. $ha^{-1}$) and trinexapac-ethyl (0.756, 1.512 and 2.668 kg a.i. $ha^{-1}$) had significantly increased seeds ripening rate and seed yield. In contrast, plant height was decreased by foliar application of MC and TE. The application of MC significantly increased seed oil yield (730 kg $ha^{-1}$ by 27.0%) compared to the control. Seed and oil yield, and unsaturated fatty acids (oleic acid, linoleic acid and linolenic acid) were increased by foliar application of MC.

Initiation of Germination Characters of Plant Seed by Light Quality (광에 의한 종자의 발아특성 발현과 그 분화 및 형성에 관하여)

  • 최관삼
    • Proceedings of the Botanical Society of Korea Conference
    • /
    • 1987.07a
    • /
    • pp.175-190
    • /
    • 1987
  • Germination characters of the lettuce seed that received photoperiodic pretreatments of low or high temperature from the flowering to harvest. MSU-15 seed, one of the lettuce cultivars used, having high dark germination, was modified to low dark germination by the long-day treatments during the seed formation. Light-requiring MSU-16 seed was modified to the dark-germination seed by high temperature given at the seed formation period. Above results suggest that the environmental conditions given to an immature seed adhered to a mother plant bring about some modification to its native germination habit. I confirmed that the spectral quality of light could influence the phytochrome system which controlled germination characters of the progeny of lettuce seed ; plants grown in light rich in far-red energies produced light-requiring seed, but those grown in high deficient in far-red energies produced dark germination seed.

  • PDF

QTL Analysis of Soybean Seed Weight Using RAPD and SSR Markers

  • Chung, Jong-Il;Ko, Mi-Suk;Kang, Jin-Ho
    • Plant Resources
    • /
    • v.3 no.3
    • /
    • pp.184-193
    • /
    • 2000
  • Soybean [Glycine max (L.) Merr.] seed weight is a important trait in cultivar development. Objective of this study was to identify and confirm quantitative trait loci (QTLs) for seed weight variation in the F2 and F2:3 generations. QTLs for seed weight were identified in F2 and F2:3 generations using interval mapping (MapMaker/QTL) and single-factor analysis of variance (ANOVA). In the F2 plant generation (i.e., F3 seed), three markers, OPL9a, OPM7a, and OPAC12 were significantly (P<0.01) associated with seed weight QTLs. In the F2:3 plant row generation (i.e., F4 seed), five markers, OPA9a, OPG19, OPL9b, OPP11, and Sat_085 were significantly (P<0.01) associated with seed weight QTLs. Two markers, OPL9a and OPL9b were significantly (P<0.05) associated with seed weight QTLs in both generations. Two QTLs on USDA soybean linkage group C1 and R were identified in both F2 and F2:3 generations using interval mapping. The linkage group C1 QTL explained 16% of the variation in seed weight in both generations, and the linkage group R QTL explained 39% and 41% of the variation for F2 and F2:3 generation, respectively. The linkage group C2 QTL identified in F2:3 generation explained 14.9% of variation. Linkage groups C1, C2 and R had previously been identified as harbouring seed size QTLs. The consistency of QTLs across generations and populations indicates that marker-assisted selection is possible in a soybean breeding program.

  • PDF

Radioactive Seed Implantation and Lobaplatin Chemotherapy Are Safe and Effective in Treating Patients with Advanced Lung Cancer

  • Li, Jia-Rui;Sun, Yu;Liu, Lin
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.16 no.9
    • /
    • pp.4003-4006
    • /
    • 2015
  • Objecive: To investigate the clinical safety and efficacy of CT-guided $^{125}iodine$ (125I) seed implantation combined with percutaneous intra-tumor injection of chemotherapy emulsion of lobaplatin and lipiodol in treating patients with advanced lung cancer. Materials and Methods: Patients with advanced lung cancer and treated with spiral CT-guided $^{125}I$ seed implantation combined with percutaneous intra-tumor injection of chemotherapy emulsion of lobaplatin and lipiodol were recruited. Results: Of the 36 patients, there were 40 nidi in total. The contrast-enhanced CT evaluation was conducted 60 d after treatment. Response evaluation suggested that 4 patients achieved complete remission (CR), 24 partial remission (PR), 4 stable disease (SD) and 4 progression disease (PD), with a total response rate of 77.8% (28/36). Conclusions: CT-guided $^{125}I$ seed implantation combined with percutaneous intra-tumor injection of chemotherapy emulsion of lobaplatin and lipiodol are safe and effective in treating patients with advanced lung cancer.