• Journal of Advanced Marine Engineering and Technology
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• v.41 no.2
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• pp.146-149
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• 2017

Si clusters generated during the plasma chemical vapor deposition (CVD) process have a great influence on the quality of the fabricated films. In particular, in hydrogenated amorphous silicon thin films (a-Si:H) used for thin film solar cells, Si clusters are mainly responsible for light-induced degradation. In this study, we investigated the amount of clusters incorporated into thin films using a quartz crystal microbalance (QCM) and specially designed cluster eliminating filters, and investigated the effect of the DC grid mesh in preventing cluster incorporation. Experimental results showed that as the applied voltage of the grid mesh, which is placed between the electrode and the QCM, decreased, the number of clusters incorporated into the film decreased. This is due to the electrostatic force from the grid mesh bias, and this method is expected to contribute to the fabrication of high-quality thin films by preventing Si cluster incorporation.

• Asian-Australasian Journal of Animal Sciences
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• v.4 no.1
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• pp.1-5
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• 1991

Responsiveness of the testis to pregnant mare's serum gonadotropin (PMSG) was studied in immature Nili-Ravi buffalo bulls. Four month old bull calves weighing between 66 to 100 kg raised under uniform condition, were treated with 1000 IU PMSG or vehicle, daily, for six days. PMSG induced an increase in the size of the testis, enlargement of the seminiferous tubules and activation of the spermatogonia. The number of differentiated Leydig cells in the testis of gonadotropin treated animals increased considerably over that of the control testes. A significant increase in plasma testosterone concentrations was observed 24 h following the first injection of PMSG and the levels continued to increase until day 6. In vehicle treated animals plasma testosterone levels remained more or less at pretreatment values. The data suggest that buffalo bull testis is functionally responsive to gonadotropin at an early stage of prepubertal development.

• Proceedings of the Korean Society of Toxicology Conference
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• 2001.10a
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• pp.118-119
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• 2001

The anti-cardiovascular effect of estrogen replacement therapy in postmenopausal women is known to be associated with its role as an antioxidant, its ability to protect cells from DNA damage. Genistein concentrated polysaccharide (GCP) is a functional food produced by fermentation of soybean isoflavone extracts with Basidiomycetes, containing rich content of genistein aglycones. The aim of this study was to investigate the effect of GCP on oxidative DNA damage and plasma total antioxidant potential, comparing to the effect of estrogen.(omitted)

• Analytical Science and Technology
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• v.8 no.4
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• pp.411-418
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• 1995

A method for the direct determination of elemental content in each of aerosol particles by inductively coupled plasma atomic emission (ICP-AES) or mass spectrometry (ICP-MS) is described. This method is based upon the introduction of diluted aerosol into an ICP and the measurement of either the flash emission intensities of an atomic spectral line or ion intensities. A pulse-height analyzer is used for the measurement of the distribution of the elemental content. In order to calibrate the measuring system, monodisperse aerosols are used. The potentials of the method are shown by demonstrating the copper emission signals from the aerosols generated at a small electric switch, a study of the relation between the decreasing rate of particle number density and particle size, and measurements of calcium contents in the individual biological cells.

• Proceedings of the KIEE Conference
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• 1997.07e
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• pp.1672-1674
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• 1997

In this paper, the penning effect was studied to control accelerating of the ionization that means increasing of cross-sectional collision through penning reactions in the plasma cells of Hg-Ar-Ne (x:10-x, 60Torr) gas discharge under various concentrations of Ar.

• Animal cells and systems
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• v.7 no.3
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• pp.249-253
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• 2003

Abnormalities in fibrinolysis system is associated with risk of hypertension. In this report, the Alu repeat insertion/deletion (I/D) polymorphism of tissue plasminogen activator (t-PA) and the Hind III RFLP of plasminogen activator inhibitor-1 (PAI-1) genes were investigated in 115 normotensives and 83 patients with hypertension, and their association with anthropometrical data and plasma biochemical parameters were analyzed. There were no significant differences in the gene frequencies of the two candidate genes between normotensives and hypertensives, respectively. Our results indicate lack of associations between the two polymorph isms in t-PA and PAI-1 genes and risk of hypertension in the population under study. However, the Hind III RFLP of PAI-1 gene was significantly associated with plasma glucose level, suggesting its role in glucose metabolism. It needs to be tested whether this RFLP of PAI-1 gene is associated with insulin resistance syndrome or non-insulin dependent diabetes mellitus (NIDDM) in the Korean population.

• Journal of Information Display
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• v.2 no.1
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• pp.5-9
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• 2001

New types of ac plasma display panel (PDP) cells are designed and tested electro-optically. We proposed two types of sustaining electrode to improve the luminous efficiency. One is the meander electrode, which has longer discharge path length and smaller electrode area than conventional type. The other is the bridge-shaped electrode, which eliminates the transparent electrode near the barrier ribs. They show higher luminous efficiency and lower power consumption than conventional type.

• Molecules and Cells
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• v.28 no.5
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• pp.441-446
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• 2009

During epididymal transit, mammalian sperm acquire selected proteins secreted by the epididymis. We previously showed that a disintegrin and metalloprotease (ADAM) 7 is expressed specifically in the epididymis and transferred to the sperm surface during epididymal transit. Here, we show that mouse ADAM7 secreted to the epididymal lumen is associated with membranous vesicles known as epididymosomes. Furthermore, we found that ADAM7 can be transferred directly from epididymal vesicles to sperm and that it is an integral plasma membrane protein in sperm. Thus, our study provides new information regarding the unique mode of secretion and interaction of ADAM7 during the epididymis-to-sperm transfer process.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.47 no.6
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• pp.471-475
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• 2021

Solitary plasmacytoma (SP) is an uncommon form of plasma cell neoplasm occurring intraosseously or in soft tissue and presents as a single mass of monoclonal plasma cells. SP in the maxillary sinus is rare and can be misdiagnosed as other maxillary sinus tumors. The essential examinations in patients with the initial diagnosis of plasmacytoma are bone marrow biopsy, serum and urine electrophoresis, and kappa/lambda ratio (κ:λ ratio) to rule out multiple myeloma (MM). Herein, a rare case of SP in the maxillary sinus treated by surgery and localized radiation is reported. At the 10-year follow-up examination, local recurrence or disseminated development of MM were not evident.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1996.04a
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• pp.244-244
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• 1996

In previous studies we reported that the levels of RBC, hemoglobulin and hematocrit in SAM Rl and SAM P6 were increased significantly from 7 day after oral administration of the pilose antler extract, 5g/kg/day, and were lasted during the study. Therefore, this study was performed to elucidate mechanism of erythropoietic action by the extract administration. SAM Rl and SAM P6 were chosen as experimental animals. At age of 12 weeks, pilose antler extract were given 0.3 and 5 g/kg/day (p.o.) each for 0, 7 and 14 days in both animals. Complete blood cells (CBC) such as WBC, lymphocytes, monocytes, granulocytes, RBC, hemoglobulin, and hematocrit were counted. And plasma concentration of erythropoietin (EPO) which is the major regulator of erythropoiesis was measured using $\^$125/I-antierythropoietin IgG. Ferritin concentration in plasma was also analyzed.