Journal of the Korea Academia-Industrial cooperation Society
/
v.13
no.1
/
pp.117-124
/
2012
This study is aimed to investigate the relationship among safety accident and perception of patient safety culture, to provide the basic data for building the patient safety culture of hospital nurses. The self-administered questionnaires were given to 129 nurses employed in hospital during the period from November 10th to 15th, 2011. The safety accident occurrence of patient was statistically significant difference according to safety education of nurse and job satisfaction of nurses. As a results, nurses' perception to the patient safety culture of hospital shows on the average score($3.46{\pm}0.3$). Among three categories, patient safety culture in a ward, and patient safety culture within hospital and safety awareness in a ward show respectively on the average score $3.59{\pm}0.3$, $3.41{\pm}0.5$, $3.41{\pm}0.4$. The score of level of patient safety culture of hospital nurses was statistically significant difference according to marital status, safety education, occupational satisfaction and health status. In correlation among safety accident occurrence of patient and safety education of nurse, patient safety culture in a ward, patient safety culture within hospital and safety awareness in a ward showed positive relationship. The results of this study indicate that education program are needed to prevent safety accident occurrence of patient, and to build the patient safety culture of hospital nurses, and to increase the safety education and occupational satisfaction, and to improve the nurses' health status.
Journal of the Korean Society of Food Science and Nutrition
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v.35
no.3
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pp.328-334
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2006
The main objective of the present study was to determine the effect of dietary ${\beta}-cyclodextrin\;({\beta}CD)$ on reducing the cholesterol content of pork. Twelve swine of 50 kg body weight were randomly distributed into four groups of three heads each and fed experimental diets for 9 weeks until they reached a market weight of 110 kg. They were assigned to the four experimental diets containing 0% (control), 1.5%, 3.0% or 5.0% pure ${\beta}CD$. Daily feed intake, body weight gain and feed efficiency were not significantly different between any of the four group. The plasma total lipid, triacylglycerol and total cholesterol content of the swine in the three ${\beta}CD$-fed groups were significantly (p<0.05) decreased when compared to those in the control group, and were significantly (p<0.05) reduced by 21.80%,55.58% and 27.69%, respectively, in the swine fed on 5% ${\beta}CD$. The cholesterol content of pork belly (mg/100g) was significantly (p<0.05) decreased by 5.33 mg, 12.70 mg and 15.23 mg in the swine maintained on 1.5%, 3.0% and 5.0% ${\beta}CD$, respectively. The cholesterol content of pork belly, when expressed as the rate of reduced cholesterol, was significantly (p<0.05) decreased by 6.44%, 15.36% and 18.42% in groups of 1.5%, 3.0% and 5.0% ${\beta}CD$, respectively, when compared to that of the control group. These results suggest that dietary ${\beta}CD$ may be classified as dietary fiber which can modulate cholesterol metabolism in swine.
Although the forest accounts in Korea have been constructed partly as the research projects since the mid-1990s, the framework of the accounts has not yet been established. The objective of this study is to provide the physical asset accounts of forested land and forest stock based on the system of integrated environmental economic accounts(SEEA) by utilizing the restructured 2004 statistical yearbook of forestry in Korea. In 2004 yearbook, new variables such as logging area and volumes are added. The logging area and volumes play important roles in constructing forest accounts because the basic structure of the physical asset accounts are composed of the opening stock, closing stock, and the changes between the two. The changes between the opening and closing stock are largely explained by the harvest. In forest accounts, in general, the main elements for the increase in stock are afforestation and reforestation while the main cause for the decrease is logging. In this study we separate the logging into natural or man-made causes. In addition, other useful information for the status of forest is recorded in an annex even if it is not necessary element in the account table. According to the forested land asset accounts generated with 2003 data, the logging area is larger than the reforestation area, and the total forested land is decreased. The logging volume is 0.4% of the total stock volume, and the planed logging volume is more than 3 times larger than the damaged logging volume. The damaged logging volumes by man-made causes is about $300,000m^3$, and it is much than that of natural causes, which is about $55,000m^3$.
This study is to investigate the effects of temperature, light and water deficit on apparent phytosynthesis rate (Pn) and dark respiration rate(Rd) of leaves in the series of studies dealing with primary productivity of korean white pine forest. The results obtained are as follows: 1. The light saturation for Pn occured at about 40 Klux, and light compensation at 1.0 to 1.3 Klux. 2. The Pn of current leaves was highest, and Pn was decreased with increasing leaf age. 3. The Rd on the response of temperature in February was about two times value in all of the temperature ranges as compared with the ones in August. 4. The incipient water stress, above which Pn and Rd declined from 100%, was different for Pn(-10bar). The high water stress required to reduce Pn to nearly 0%, at -24 bar, but Rd was only 43% at -24 bar. 5. The optimum temperature range for Pn showed about 15 to $18^{\circ}C$ in February and 23 to $26^{\circ}C$ in August.
Kim, Ryeon;Woo, Kyung-Sik;Kim, Bong-Hyeon;Park, Jae-Suk;Park, Hun-Young;Jeong, Hee-Jeong;Lee, Jong-Hee
The Korean Journal of Quaternary Research
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v.24
no.1
/
pp.11-24
/
2010
Seongnyu Cave have developed along the NE-SW direction in carbonate rocks of the Joseon Supergroup. The cave mostly shows horizontal passages and contains three lakes. The main passage is about 330 m long with 540 m-long branches, thus the total length of the cave is about 870 m. Through cave diving, about 85 m-long new passages were discovered. Numerous speleothems such as soda straws, stalactites, stalagmites, columns, flowstones, rimstones, cave shields, cave corals, curtains (and bacon sheets), cave pearls, cave flowers, helictites and calcite rafts can be found in the cave. Especially, some speleothems which were believed to have grown in the past were discovered in the submerged passage, and a few stalactites, stalagmites, flowstones and columns were eroded (or corroded) by the cave stream that flowed on the floor. Because these speleothems only grow in subaerial environments within limestone caves, it appears that they grew when there was no lake in the cave and became submerged as the lake level rose in the cave. The presence of these speleothems in the lakes indicate that they only grew during glacial periods when sea-level was lower. Therefore, detailed investigation of these speleothems will provide invaluable information on paleoclimatic evolution around the Korean peninsula in the future.
For obtaining the basic data for establishing plan on the conservation of the Gameunsa 3-story and Naweonri 5-story Pagodas located at the Kyeongju city, the characteristics of the rock and weathering phenomena have been investigated. The former consists of quartz-rlch granite containing small amount of biotite, and the latter of alkali granite with abundant perthite, These rock phases are nearly identical to the marginal phase of medium-grained hornblende-biotite granodiorite and alkali granite respectively, which are distributed around the Kyeongju city. The rock weathering may be governed mainly by chemical weathering of feldspar following physical segregation of quartz grains and pervasive moss. The feldspar easily dissolve In the solution with pH<7 to precipitate clay mineral such as a kaolinite as a secondary phase on the feldspar surface. However, the chemical weathering of feldspar may continue when the surface is washed by the rain according to removal of the reprecipitated phase. On forwarding, the weathering may be greatly Influenced by the acid rain. Exfoliation and weathering along igneous lineation resulting in exfoliating along the structural line are the characteristic weathering phenomena. Also the secondary small cracks are irregularly developed on the rocks due to different strain on places by the overall structural unbalance of the pagodas. Along these cracks, the rain water intrudes deeply into the rocks and weathering occurs intensively compared to other parts. Weathering may be artificially promoted by the grinding or sculpturing when the pagodas were made. Because it may influence on the physical properties of the rocks as well as destruct the surface of the feldspar crystals, the major constituents of the rocks, it results in providing the environment of easy chemical weathering along time. For conservation, the pagodas must be structurally balanced by compacting the soil basement and supplementing rocks on the destroyed part. On the exfoliated part it is better not to be artifically treated as using cementing material. But the cracks may be filled up by cementing material to avoid the intrusion of acidic water. To supplement the rocks on the destroyed part, it may be better to use similar rock phases from identical biotite granite and alkali granite masses around the Kyeongju city.
An experiment was conducted to investigate the effect of microbial phytase ($Natuphos^{R}$) supplementation in combination with enzyme complex (composed of enzymes targeted to SBM dietary components such as $\alpha$-galactosides and galactomannans; $Endo-Power^{R}$) to diet with low nutrient levels on growth performance and ileal nutrient digestibility of weaned pigs. A total of 210 crossbred weaned pigs (Landrace$\times$Yorkshire$\times$Duroc), 6.68$\pm$0.98 kg of initial body weight, were randomly allotted to five dietary treatments, based on weight and age, according to a randomized complete block design. There were three pens per treatment and 14 pigs per pen. The dietary treatments were 1) CON (Control diet with no phytase and enzyme complex (EC)), 2) LP+EC 100 (Control diet with 0.15% unit lower available phosphorus (aP) level+0.1% phytase (500 FTU/kg diet) and 0.1% enzyme complex), 3) LP+EC 80 (Control diet with 0.15% unit lower aP level+0.08% phytase (400 FTU/kg diet) and 0.08% enzyme complex, 4) LPEA+EC 100 (Control diet with 0.15% unit lower aP and 3% lower ME and amino acid levels (lysine, methionine, threonine and typtophan)+0.1% phytase (500 FTU/kg diet) and 0.1% enzyme complex), 5) LPEA+EC 80 (Control diet with 0.15% unit lower aP and 3% lower ME and amino acid levels+0.08% phytase (400 FTU/ kg diet) and 0.08% enzyme complex). For the determination of ileal nutrients digestibility, a total of 15 T-cannulated pigs (initial body weight; 7.52$\pm$1.24 kg; 3 replicates per treatment) were used in the present study. Piglets were weighted and allotted into same dietary treatments as one in growth trial and phase I experimental diets were provided for ileal digestibility study. There was no significant difference (p>0.05) in average daily gain (ADG) and average daily feed intake (ADFI) among dietary treatments during the whole experimental period (0 to 5 weeks). However, piglets in LP+EC 100 group had a significantly higher gain/feed ratio (G:F) than piglets had in control (p<0.05). Crude protein, energy and phosphorus digestibilities were significantly improved when both of phytase and enzyme complex were supplemented at the revel of 0.1%, respectively to diets with low nutrient level (aP or (and) ME and amino acids) (p<0.05). Piglets in LP+EC 100 and LPEA+EC 100 groups showed significantly higher phosphorus content (%) in bone than that of piglets in control group (p<0.05). Supplementation of both of phytase and enzyme complex at 0.1%, respectively, to diet with low nutrient levels (aP or (and) ME and amino acids) significantly improved total ileal essential amino acid and nonessential amino acid digestibilities compared to control group (p<0.05). In conclusion, the results from the present study suggest that the simultaneous inclusion of phytase and enzyme complex to diets at recommended level is advantageous with respect to improving growth performance and nutrient digestibility of weaned pigs and may contribute to increased economic return when added to corn-soy based weaned pig diets.
In this study we examined the changes in expression of pigments in black rice during kernel development, which were sampled at 2~3-day intervals to the 40th day after flowering. The first expression of pigment on kernels was observed on the seed coat about 5 days after flowering. At that times, the ratio of pigment expression was 0.08% of total area. The order in expression of pigments in black rice during kernel development was top first, followed by bottom, dorsal side, then ventral side. Maximum percentage of the total colored area in kernel was about 25 days after flowering. After that, the color has changed to dark purple from pale purple during kernel development after flowering. After harvesting, the non-uniform color kernels were observed. As a result, the ventral side in a kernel was a position of the non-uniform color such as a mixture of pale purple and dark purple. Also, we could be concluded that patten of pigment expression was similar in kernel development.
This study was conducted to investigate the effect of essential amino acid(EAA) deficient diets on short-term feeding response and the Fos expression in brain area when methionine deficiency diet fed, and thereby to know the mechanism of feed intake regulation. In all trials, experimental diets were formulated with pure amino acid mixture to level of 15% nitrogen. Rats were adapted to a 6-hr single-meal feeding per day(17:00${\sim}$21:00). Feed intake and body weight were monitored every hour after 7-day of feeding of individual EAA deficient diets in Exp. Ⅰ. In Exp. Ⅱ, Fos immuno- histochemistry was determined in various regions of brain to identify the regions that is related to suppressed feed intake following feeding methionine-deficient diet. Fos expression was examined to know the initial sensitive region in the brains of rats at 3h after feeding of the control and methionine deficient diet(-Met). Initial response to EAA deficiency diets was severely depressed in methionine deficiency diet, but the depression was low in threonine deficiency diet. However, the feed intake at 3rd day in rats was depressed in the order of His(71%), Leu(68%), Ile(66%), Thr(63%), Trp(61%), Val(55%), Phe(52%), Met(51%), Lys(44%) and Arg(24%). Fos immunoreaction in neural regions(PPC, amygdala and EPC) of pyrifrom cortex was increased in the -Met group more than in the control diet group, but those in LH, VMH and PVM were similar. Thus, based on these data, the PPC was identified as the initial response area in the -EAA diet.
This study was conducted to screen herbicidal activity of Korean native plants which could be used for the development of new natural herbicides. Fifty-five plants were collected from Wan and Jeju islands in Korea and their methanol extracts were obtained. Herbicidal activity of methanol extracts were determined by seed bioassay using rape (Brassica napus L.) seedlings. Among fifty-five species, five plants were highly herbicidal ($GR_{50}$ < 1,000 ${\mu}g\;g^{-1}$): Clematis apiifolia A. P. DC.; (811 ${\mu}g\;g^{-1}$), Euscaphis japonica (THUNB.) KANITZ (867 ${\mu}g\;g^{-1}$), Hibiscus mutabilis L. (988 ${\mu}g\;g^{-1}$), Phyllostachys pubescens MAZEL (778 ${\mu}g\;g^{-1}$), Yucca recurvifolia (857 ${\mu}g\;g^{-1}$). Twenty-seven plants were shown moderately herbicidal (1,000 < $GR_{50}$ < 2,000 ${\mu}g\;g^{-1}$), however, twenty-three plants were not shown any herbicidal activity.
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