• 한국식생활문화학회지
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• 제15권5호
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• pp.325-337
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• 2000

The purpose of this study was to investigate several aspects of eating out behavior especially in relation to food waste. The data were collected from 620 housewives in Jeonbuk area but, except for 134 case not eating out . The 66.9% of subjects ate eating out 1 to 2 times monthly. The younger in age, higher in education level and employed housewives, higher in monthly income have a more increase in eating out frequency. In the 50.8% of subjects food rest was rare when eating out. The higher in educational level and higher in monthly income have an inclination to more food waste. The 51.4% of subjects don't know [Good Menu System]. We housewives should order a planned and moderate food amount when eating out, and make an effort normally anywhere for the reduction of food waste, and then the wasted food and food rubbish will be reduced. Besides this, the restaurants should practice [Food Bank] & [Good Menu System] and the academic world should make further researches on this field. Moreover the government administration should enlighten the people and have a public information for the more reasonable food culture.

• Journal of Korean Neurosurgical Society
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• 제63권4호
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• pp.470-476
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• 2020

Objective : The objective of this study was to develop a score to predict patients with acute ischemic stroke (AIS) who will not benefit from endovascular treatment (EVT) using computed tomographic angiography (CTA) parameters. Methods : The CTA-ABC score was developed from 3 scales previously described in the literature: the Alberta Stroke Program Early CT Score (0-5 points, 3; 6-10 points, 0), the clot burden score (0-3 points, 1; 4-10 points, 0), and the leptomeningeal Collateral score (0-1 points, 2; 2-3 points, 0). We evaluated the predictive value of CTA parameters associated with symptomatic intracranial hemorrhage (sICH) or malignant middle cerebral artery infarction (MMCAI) after EVT and developed the score using logistic regression coefficients. The score was then validated. Performance of the score was tested with an area under the receiver operating characteristic curve (AUC-ROC). Results : The derivation cohort consisted of 115 and the validation cohort consisted of 40 AIS patients. The AUC-ROC was 0.97 (95% confidence interval [CI], 0.94-0.99; p<0.001) in the derivation cohort. The proportions of patients with sICH and/or MMCAI in the derivation cohort were 96%, 73%, 6%, and 0% for scores of 6, 5, 1, and 0 points, respectively. In the validation group, the proportions were similar (90%, 100%, 0%, and 0%, respectively) with an AUC-ROC of 0.96 (95% CI, 0.90-1.00; p<0.001). Conclusion : Our CTA-ABC score reliably assessed risk for sICH and/or MMCAI in patients with AIS who underwent EVT. It can support clinical decision-making, especially when the need for EVT is uncertain.

• 한국동물위생학회지
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• 제33권3호
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• pp.271-274
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• 2010

With deer farming now becoming recognized as one of the alternative livestock farming practices, there has been much attention on infectious diseases of cattle, but less awareness of these diseases in deer. Serum samples were randomly collected from 78 deer from 31 farms and 7 wild water deer from wild animal medical center during 2005 to 2007, respectively. A total 85 sera were tested for Neospora caninum antibodies by ELISA. Fourteen farmed deer(17.9%) were positive to N. caninum but no antibodies were found in sera from wild water deer. The sera from all of the area for these study showed positive in the range from 6.7 to 30.7%. On the basis of these study, farmed deer in Jeonbuk province were exposed extensively and seriously to N. caninum which might present a risk to other species included cattle and dog.

• 반도체디스플레이기술학회지
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• 제22권2호
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• pp.30-34
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• 2023

Since dishing in the CMP process is a major factor that hinders the uniformity of the semiconductor thin film, many studies have focused this issue to improve the non-uniformity of the film due to dishing. In the metal layer, the dishing mainly occurs in the central part of the metal due to a difference in a selection ratio between the metal and the dielectric, thereby generating a step on the surface of the metal layer. Factors that cause dishing include the shape of the thin film, the chemical reaction of the slurry, thermal deformation, and the rotational speed of the pad and head, and dishing occurs due to complex interactions between them. This study analyzed the stress generated on the metal layer surface in the CMP process using ANSYS software, a commercial structure analysis program. The stress caused by the vertical load applied from the pad was analyzed by changing the area density and line width of the dummy metal. As a result of the analysis, the stress in the active region decreased as the pattern density and line width of the dummy metal increased, and it was verified that it was valid compared with the previous study that studied the dishing according to the dummy pattern density and line width of the metal layer. In conclusion, it was confirmed that there is a relationship between dishing and normal stress.

• Advances in nano research
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• 제15권1호
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• pp.1-13
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• 2023

Ti₃C₂T_x MXene, a 2D material, is known to exhibit unique characteristics that are strongly dependent on surface termination groups. Here, we developed a novel annealing approach with Ca as a reducing agent to simultaneously remove F and O groups from the surface of multilayered MXene powder. Unlike H₂ annealing that removes F effectively but has difficulty in removing O, annealing with Ca effectively removed both O and F. X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy revealed that the proposed approach effectively removed F and O from the MXene powder. The results of O/N analyses showed that the O concentration decreased by 57.5% (from 2.66 to 1.13 wt%). In addition, XPS fitting showed that the volume fraction of metal oxides (TiO₂ and Al₂O₃) decreased, while surface termination groups (-O and -OH) were enhanced, which could increase the hydrophilic and adsorption properties of the MXene. These findings suggest that when F and O are removed from the MXene powder, the interlayer spacing of its lattice structure increases. The proposed treatment also resulted in an increase in the specific surface area (from 5.17 to 10.98 m²/g), with an increase in oxidation resistance temperature in air from ~436 to ~667 ℃. The benefits of this novel technology were verified by demonstrating the significantly improved cyclic charge-discharge characteristics of a lithium-ion battery with a Ca-treated MXene electrode.

• Korean Journal of Radiology
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• 제24권8호
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• pp.739-751
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• 2023

Objective: This systematic review and meta-analysis evaluated the accuracy of preoperative breast magnetic resonance imaging (MRI) features and tumor-to-nipple distance (TND) for diagnosing occult nipple-areolar complex (NAC) involvement in breast cancer. Materials and Methods: The MEDLINE, Embase, and Cochrane databases were searched for articles published until March 20, 2022, excluding studies of patients with clinically evident NAC involvement or those treated with neoadjuvant chemotherapy. Study quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2 tool. Two reviewers independently evaluated studies that reported the diagnostic performance of MRI imaging features such as continuity to the NAC, unilateral NAC enhancement, non-mass enhancement (NME) type, mass size (> 20 mm), and TND. Summary estimates of the sensitivity and specificity curves and the summary receiver operating characteristic (SROC) curve of the MRI features for NAC involvement were calculated using random-effects models. We also calculated the TND cutoffs required to achieve predetermined specificity values. Results: Fifteen studies (n = 4002 breast lesions) were analyzed. The pooled sensitivity and specificity (with 95% confidence intervals) for NAC involvement diagnosis were 71% (58-81) and 94% (91-96), respectively, for continuity to the NAC; 58% (45-70) and 97% (95-99), respectively, for unilateral NAC enhancement; 55% (46-64) and 83% (75-88), respectively, for NME type; and 88% (68-96) and 58% (40-75), respectively, for mass size (> 20 mm). TND had an area under the SROC curve of 0.799 for NAC involvement. A TND of 11.5 mm achieved a predetermined specificity of 85% with a sensitivity of 64%, and a TND of 12.3 mm yielded a predetermined specificity of 83% with a sensitivity of 65%. Conclusion: Continuity to the NAC and unilateral NAC enhancement may help predict occult NAC involvement in breast cancer. To achieve the desired diagnostic performance with TND, a suitable cutoff value should be considered.

• Animal cells and systems
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• 제5권4호
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• pp.303-308
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• 2001

The skin structure of Misgurnus mizolepis was studied based on the microanatomical investigation of skin fragments taken from four regions. The epidermis was distinguished by two types of skin glands, a small mucous cell and a large club cell. The mucous cell was acid sulfomucins (some sialomucins) but the club cell did not give any histochemical tests for mucosubstances. The presence of a well defined lymphatic system with small lymphocytes was established in the stratum germinativum layer of the epidermis. A large number of blood capillaries run very close to each other just below the basement membrane, and a definite area giving AB and PAS positive was present between the basement membrane and scale. These structural features of skin in M. mizolepis seem to be closely related with cutaneous respiration.

• 한국동물위생학회지
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• 제38권1호
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• pp.57-59
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• 2015

This study was carried out to investigate the Sacbrood virus (SBV) of Korean native honeybees causing serious damage in Jeonbuk area. Korean native honeybees completing the after overwinter 60 farms and March to April active phase adult bees and larvae 52 farms were collected from farms in 7 counties. Active phase of the adult bees 39 (75.0%) and larvae 24 (46.2%) farms was infected with SBV in 52 farms. This result indicate that SBV was the highest in Imsil-gun than other areas.

• 한국동물위생학회지
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• 제27권2호
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• pp.165-169
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• 2004

In order to monitor the parasites, 83 fecal samples were taken from monkeys such as Cercopithecus mitis(6), Macaca fuscata(32), Saimiri sciurea(27), Macaca nigra(5), Papio hamadrysa(8), and Macaca mulatta(5) in Jeonbuk area. Isolation and Identification of the parasites from the feces were determined by the fecal examination using the floatation and microscopical examination, respectively. The detection rate was 21.6%, and mixed infection rate was single 18.0%(15 heads), double 2.4%(2 heads), and triple 1.2% (1 head). The isolates were identified as Strongyloides axei from 7 heads. Trichuris spp from 3 heads, Entamoeba histolytica 3 heads, Toxacaris leonina from 3 heads, and Eimeria spp from 2 heads.

• 한국동물위생학회지
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• 제25권1호
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• pp.39-44
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• 2002

In order to monitor the parasites, 233 fecal samples were taken form horse in Jeonbuk area. Then identification of the parasites were determined by the fecal examination using the floatation and microscopical examination, respectively. The detection rate. was 31.7%, and mixed infection rate was single 22.7%(53 heads), double 8.2%(19 heads), and triple 1.3%(1heads). The isolates were identified as Trichostrongylus axei from 38 heads, Strongyloides westeri from 30 heads, Trichonema spp from 11 heads, Stongylus spp from 10 heads, Triodontophorus spp from 4 heads, and Dityocaulus arnfielde from 1 head.