Two determinate soybean cultivars, 'Baegunkong' and 'Namhaekong', were planted on 8 Jone, 23 June, and 8 July 1996 at Cheju at planting densities of 33, 43, 53, 63 plants per $m^2$ to determine the optimum planting density of double crop soybean for recently recommended cultivars in Cheju area at various planting dates. The plant height, and the diameter and node number of main stems decreased as planting was delayed. The plant height increased but the stem diameter and node number decreased with increasing planting density. Pod number per plant was greater for Namhaekong than for Baegunkong and was not affected by planting date. Pod number per plant decreased but pod numbers per $\textrm{m}^2$ increased with increasing planting density. The number of seeds per pod was greater at the two later plantings and fewer at the highest planting density. 100-seed weight decreased with delaying planting. The seed weight was lighter at the highest planting density for Baegunkong but there was no difference for Namhaekong among the planting densities. The seed yield of Baegunkong was greater for 23 June and 8 July plantings (2,280 and 2,420 kg/ha) than for 8 June planting (1,450 kg/ha) while that of Namhaekong was greatest at 23 June planting (2,690 kg/ha) compared with 8 June and 8 July plantings (1,890 and 2,080 kg/ha). Across the planting dates and cultivars, seed yield increased from 1,860 to 2,290kg/ha as the planting density increased from 33 to 53 plants/$\textrm{m}^2$ and then leveled off with a further increase in planting density.
Kim, Hong-Kyu;Kim, Yong-Kyun;Seo, Gwan-Seuk;Oh, Se-Hyeon;Kim, Hong-Gi
Journal of Mushroom
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v.3
no.4
/
pp.154-158
/
2005
The results were as follows; 3 additives(rice bran, wheat bran and soybean bran) to the Quercus dentata sawdust were applied at 10, 20 and 30%. High yield was recorded at 20% of rice bran and wheat bran and 30% of soybean bran. Among various sawdust media, the cultivation with the Quercus dentata sawdust alone showed the most favored growth index, such as 22 days of full mycelial growth, 11 days of pinheading from spawning and 23.5g per $1,200m{\ell}$ bottle. In the size of bottles, the lowest infection ratio was 5 % at $1,200m{\ell}$ bottle. In the growth characteristics with the bottle size, Reishi at $1,600m{\ell}$ bottle showed best result when it is observed for 13~15 days in pinheading from spawing, 36~37 days in fruit bodies growing and 26.7~29.3g yield per bottle. The highest yield per area was 6.4kg at horizontal bed with 218 bottles per $3.3m^2$. The Reishi produced in $1,600m{\ell}$ bottle with horizontal cultivation had less number of fruit bodies and best yield, thus it is determined to be the most economic method.
In order to examine the effects of deep seawater (mesopelagic water in the broad sense) on the growth of macroalgae, the growth and nutrient uptake (nitrate and phosphate) of Ulva sp. (Ulvophyceae, Chlorophyta) were investigated by cultivation in deep seawater (taken from 687 m depth at Yaizu, central Japan, in August 2001), surface seawater (taken from 24 m depth), and a combination of the two. Culture experiments were carried out in a continuous water supply system and an intermittent water supply system, in which aerated 500-mL flasks with 4 discs of Ulva sp. (cut sections of ca. 2 $cm_2$) were cultured at 20$^{\circ}C$ water temperature, 100 $\mu$mol photons $m^{-2}{\cdot}s^{-1}$ light intensity, and a 14:10 light:dark cycle. Nutrient uptake by Ulva sp. was high in all seawater media in both culture systems. The frond area, dry weight, chlorophyll a content, dry weight per unit area, and chlorophyll a content per unit area of Ulva sp. at the end of the experimental period were the highest in deep seawater and the lowest in surface seawater in both culture systems. These values, except for dry weight per unit area and chlorophyll a content per unit area, for each seawater media in the intermittent water supply system were higher than those in the continuous water supply system. We conclude that not only deep seawater as the culture medium but also the seawater supply system is important for effective cultivation of macroalgae.
Heritability of flowering date, length of main stem, weight of 100 grains and number of shells per square meter in peanut were high with low local variation. There was positive genotypic correlation between length of main stem and yield, No. of shells per square meter and matured seed ratio, No of shells per square meter and yield 100 grain weight and yield but was negative genotypic correlation between flowering date and yield. With the view of path-coefficients, length of main stem, number of shells per square meter showed highly direct effects at.. all locations.
To develop new varieties of rapeseed (Brassica napus L.), the seeds of three varieties, 'Naehan', 'Tammi', and 'Halla' were irradiated with proton ion beams and gamma rays with 0 to 2,000 Gy. We had selected 9 lines in $M_5$ generation, and their useful characteristics were investigated by progressing from $M_6$ to $M_7$ generation for checking uniformity and stability. The 9 lines selected in $M_5$ generation were maintained their characteristics in terms of flowering date, maturing date, and plant height through $M_6$ to $M_7$ generations. Especially, 2 lines of NP600-1-1-198-2-1 and NP1000-13-2-362-4-1 selected in $M_5$ generation derived from 'Naehan' had characteristics of early maturity and shorter stem than original variety, and they also were maintained characteristic of early maturity such as 10~11 days earlier flowering date and 6~9 days earlier maturing date through $M_6$ to $M_7$ generations. For stem length, they showed characteristics of shorter stem in 2 lines of NP600-1-1-198-2-1 line and NP1000-13-2-362-4-1 line about 16%, 25% shorter stem than original variety respectively through $M_6$ to $M_7$ generations. Furthermore, some characteristics of 2 lines compared to the original variety were similar or higher in weight of 1,000 seeds, number of branches per plant, number of siliqua per panicle, number of seeds per silique, oil contents, and oleic acid contents. The line with large and plump flowers selected in $M_5$ generation also showed large and dark yellow flowers through $M_6$ to $M_7$ generations. The lines with High oleic acid and low saturated fatty acid contents selected in $M_5$ generation were maintained characteristics through $M_6$ to $M_7$ generation and these useful characteristics were expected for developing a new variety for bio diesel uses.
JSTS:Journal of Semiconductor Technology and Science
/
v.17
no.4
/
pp.561-567
/
2017
This paper presents a 4-channel common-cathode VCSEL driver array operating up to 6.25 Gb/s per channel for the applications of HDMI 2.0 active optical cables. The proposed VCSEL driver consists of an input buffer, a modified Cherry-Hooper amplifier as a pre-driver, and a main driver with pre-emphasis to drive a common-cathode VCSEL diode at high-speed full switching operations. Particularly, the input buffer merges a linear equalizer not only to broaden the bandwidth, but to reduce power consumption simultaneously. Measured results of the proposed 4-channel VCSEL driver array implemented in a $0.13-{\mu}m$ CMOS process demonstrate wide and clean eye-diagrams for up to 6.25-Gb/s operation speed with the bias current 2.0 mA and the modulation currents of $3.1mA_{PP}$. Chip core occupies the area of $0.15{\times}0.1{\mu}m^2$ and dissipate 22.8 mW per channel.
Park, Byeng-Hyen;Kim, Jae-Ok;Lee, Kwng-Sik;Joo, Gea-Jae;Lee, Sang-Joon;Nam, Gui-Sook
Korean Journal of Ecology and Environment
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v.35
no.4
s.100
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pp.285-294
/
2002
The purpose of this study was to evaluate the relationships between purification characteristics and hydraulic conditions, and to clarify the basic and essential factors required to be considered in the construction and management of artificial wetland system for the improvement of reservoir water quality. The artificial wetland system was composed of a pumping station and six sequential plants beds with five species of macrophytes: Oenanthe javanica, Acorus calamus, Zizania latifolia, Typha angustifolia, and Phragmites australis. The system was operated on free surface-flow system, and operation conditions were $3,444-4,156\; m^3/d$ of inflow rate, 0.5-2.0 hr of HRT, 0.1-0.2 m of water depth, 6.0-9.4 m/d of hydraulic loading, and relatively low nutrients concentration (0.224-2.462 mgN/L, 0.145-0.164 mgP/L) of inflow water. The mean purification efficiencies of TN ranged from 12.1% to 14.3% by showing the highest efficiency at the Phragmites australis bed, and these of TP were 6.3-9.5% by showing the similar ranges of efficiencies among all species. The mean purification efficiencies of SS and Chl-A ranged from 17.4% to 38.5% and from 12.0% to 20.2%, respectively, and the Oenanthe javanica bed showed the highest efficiency with higher concentration of influent than others. The mean purification amount per day of each pollutant were $9.8-4.1\;g{\cdot}m^{-2}{\cdot}d^{-1}$ in BOD, $1.299-2.343\;g{\cdot}m^{-2}{\cdot}d^{-1}$ in TN, $0.085-1.821\;g{\cdot}m^{-2}{\cdot}d^{-1}$ in TP, $17.9-111.6\;g{\cdot}m^{-2}{\cdot}d^{-1}$ in SS and $0.011-0.094\;g{\cdot}m^{-2}{\cdot}d^{-1}$ in Chl-a. The purification amount per day of TN revealed the hi링hest level at the Zizania latifolia bed, and TP showed at the Acrous calamus bed. SS and Chl-a, as particulate materials, revealed the highest purification amount per day at the Oenanthe javanica bed that was high on the whole parameters. It was estimated that the purification amount per day was increased with the high concentration of influent and shoot density of macrophytes, as was shown in the purification efficiency. Correlation coefficients between purification efficiencies and hydraulic conditions (HRT and inflow rate) were 0.016-0.731 of $R^2$ in terms of HRT, and 0.015-0.868 of $R^2$ daily inflow rate. Correlation coefficients of purification amounts per day with hydraulic conditions were 0.173-0.763 of Ra in terms of HRT, and 0.209-0.770 daily inflow rate. Among the correlation coefficients between purification efficiency and hydraulic condition, the percentages of over 0.5 range of $R^2$ were 20% in HRT and in daily inflow rate. However, the percentages of over 0.5 range of correlation coefficients ($R^2$) between purification amount per day and hydraulic conditions were 53% in HRT and 73% in daily inflow rate. The relationships between purificationamount per day and hydraulic condition were more significant than those of purifi-cation efficiency. In this study, high hydraulic conditions (HRT and inflow rate) are not likely to affect significantly the purification efficiency of nutrient. Therefore, the emphasis should be on the purification amounts per day with high hydraulicloadings (HRT and inflow rate) for the improvement of eutrophic reservoir withrelatively low nutrients concentration and large quantity to be treated.
Objectives : This research was performed to investigate the effects of Fructus Hordei Germiniatus-herbal acupuncture(HA; herbal acupuncture) at acupoint Jung-wan($CV_{12}$) on weight gain, food consumption, food efficiency, serum of lipid concentrations and liver function of rats fed high fat diet for 7weeks. Methods : Experimental groups were divided into high fat diet group(Control), high fat diet and saline injection at acupoint $CV_{12}$ treated group(Saline), high fat diet and Fructus Hordei Germiniatus-HA at acupoint $CV_{12}$ treated groups. According to HA concentration, HA groups were classified into 4 groups ; HA-1($0.108mg/g/m{\ell}$), HA-2($0.054mg/g/m{\ell}$), HA-3($0.022mg/g/m{\ell}$), HA-4($0.011mg/g/m{\ell}$). HA was treated at $20{\mu}{\ell}$ per 4days, total 12times in 49days. Results : 1. Body weight per week was significantly decreased in HA-1, HA-2, HA-3 and HA-4 And body weight per day was significantly decreased in HA-3. 2. Food consumption per week was significantly decreased in HA-1, HA-2, HA-3 and HA-4. 3. Food efficiency per week was significantly decreased in HA-2, HA-3 and HA-4 And food efficiency per day was significantly decreased in HA-3. 4. The level of serum total cholesterol was significantly decreased in HA-1 and HA-3 And the level of serum HDL-cholesterol was significantly decreased in HA-1. 5. The level of serum triglyceride was significantly decreased in HA-1, HA-2, HA-3 and HA-4. And the level of serum total bilirubin was significantly decreased in HA-1and HA-2. 6. The level of serum AST was significantly decreased in HA-2 and HA-3 And the level of serum ALT, r-GTP were significantly decreased in HA-2. Conclusions : According to the above results, Fructus Hordei Germiniatus-HA at acupoint $CV_{12}$ can control body weight, food consumption, food efficiency, serum lipid concentrations and liver function. Asthe same time this kind of Fructus Hordei Germiniatus-HA does not seem to be injurious on liver function. To use Fructus Hordei Germiniatus-HA for obesity, further studies about their underlying mechanism may be needed.
Jo, Su-jeong;Choi, Young-doo;Jung, Chan-yung;Kim, Kap-sung;Lee, Seung-deok
Journal of Pharmacopuncture
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v.18
no.3
/
pp.57-62
/
2015
Objectives: The purpose of this study was to examine the single-dose intravenous toxicity of Guseonwangdo-go glucose 5% pharmacopuncture (GWG5). Methods: Forty Sprague-Dawley rats were divided into four groups of five males and five females per group: an intravenous (IV) injection of 1.0 mL of normal saline solution per animal was administered to the control group; IV injections of 0.1, 0.5, and 1.0 mL of GWG5 per animal were administered to the experimental groups (G: 0.1, G: 0.5, and G: 1.0). Observation of clinical signs and body weight measurements were carried out for 14 days following the injections. At the end of the observation period, hematological, biochemical, and histopathological tests, as well as necropsy examinations, were performed on the injected parts. Results: No mortalities or adverse clinical signs were observed in any of the groups. The body weights of all groups continuously increased. In the hematological and the biochemical tests, females in G-0.1 had minimal changes, but those changes were not dose dependent. On necropsy examination, no abnormalities were observed. In the histopathological test, focal inflammatory cell infiltrations were observed in two female rats, one in the control group and one in G-1.0. Also, one female rat in the control group had an epidermis crust. These changes were concluded to have been caused by the insertion of the needle into a vein. Conclusion: The above findings suggest that the lethal dose of GWG5 administered via IV injection is more than 1.0 mL per animal in both male and female rats. Further studies are needed to establish more detailed evidence of its toxicity.
Magazine of the Korean Society of Agricultural Engineers
/
v.24
no.2
/
pp.56-66
/
1982
This study was carried out in order to estimate water losses in irrigation canals, which may be used to evaluate the water requirement for irrigation projects. The conveyance losses were measured by the inflow-outflow method, the seepage losses were measured by the ponding method, and the operation losses in the course of irrigation were calculated by comparing the two kinds of losses. The results obtained in this experiment were as follows; 1. Conveyance losses per unit area of wetted perimeter by the main irrigation canal, the secondary irrigation canal and the tributary irrigation canal, were 1.399${\times}10^{-5}m^3/sec/m^2$, 5.154${\times}10^{-5}m^3/sec/m^2$, and 2.67${\times}10^{-5}m^3/sec/m^2$ respectively in the Goong-sa area. And they were 1.934${\times}10^{-5}m^3/sec/m^2$, 2.149${\times}10^{-5}m^3/sec/m^2$, and 4.558${\times}10^{-5}m^3/sec/m^2$ respectively in the Seong-dug area. 2. Seepage losses per unit area of wetted perimeter by the secondary irrigation canal and the tributary irrigation canal, were 2.180${\times}10^{-6}m^3/sec/m^2$ and 2.168${\times}10^{-6}m^3/sec/m^2$ in the Goong-sa area, 1.150${\times}10^{-6}m^3/sec/m^2$ and 1.084${\times}10^{-6}m^3/sec/m^2$ in the Seong-dug area respectively. 3. Operation losses per unit area of wetted perimeter by the secondary irrigation canal and the tributary irrigation canal, were 4.936${\times}10^{-5}m^3/sec/m^2$ and 2.453${\times}10^{-5}m^3/sec/m^2$ in the Goong-sa area, 2.034${\times}10^{-5}m^3/sec/m^2$ and 4.450${\times}10^{-5}m^3/sec/m^2$ in the Seong-dug area respectively. 4. Conveyance, seepage and operation losses in the Goong-sa area were 6.7%, 94.6%, and 14.0% more than those in the Seong-dug area. Operation losses amount to about 17 times as much as seepage losses in the Goong-sa area and about 29 times in the Seong-dug area. 5. The seepage losses depend much on the soil texture, ranging from 7.437${\times}10^{-7}m^3/sec/m^2$ to 2.430${\times}10^{-6}m^3/sec/m^2$. 6. Water loss rates in the main irrigatin canal, the secondary irrigation canal and the tributary irrigation canal, were estimated as 8.49%, 37.27% and 9.81% respectively in the Goong-sa area. And they were estimated as 15.10%, 32.67% and 13.78% respectively in the Seong-dug area.
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