• 한국정보통신학회논문지
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• 제25권2호
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• pp.208-213
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• 2021

컴퓨터 활용을 통한 문화도 기존의 문화 형태를 변화시킬 만큼 다양하고 빠르게 변화되고 있다. 앉아서 생활하는 시간이 증가하면서 인간은 요통의 질병에 더 많이 노출 되었으며, 요통은 허리디스크를 중심으로 허리와 관련된 통증을 포함한다. 요통의 대부분은 척추와 몸통을 지지해주는 근육과 인대 이상에 따른 원인이 크다. 이에 허리 요통을 포함한 건강한 허리를 유지하기 위한 효과적인 대책이 필요하다. 본 논문에서는 요통을 감소하거나 치료에 도움을 줄 수 있도록 요추 운동효과를 얻을 수 있는 앱 개발을 위한 전반적인 설계를 제시한다. 이를 효과적으로 사용하기 위해서 요추 운동효과를 얻기 위한 방안을 제시하고, 이를 그래픽기반 유도점을 활용하여 효과적인 요통 치료에 도움일 될 수 있는 앱 설계 제시를 목표로 한다.

• 한방재활의학과학회지
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• 제31권1호
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• pp.47-57
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• 2021

Objectives This study was conducted to confirm the possibility of Clostridium difficile infection (CDI) treatment through natural herbal medicines. Methods After screening a total of 77 herbal medicines through the paper disc agar diffusion method, we selected the herbal medicines that showed a effectiveness compared to the positive control vancomycin. Afterwards, drugs that showed inhibitory effects compared to C. difficile without inhibition of Bifidobacterium bifidum and Lactobacillus plantarum, known as beneficial bacteria, were selected and minimal inhibitory concentration (MIC) was confirmed by applying the Broth microdilution method. Results The Coptidis Rhizoma, well known for its antimicrobial effect, was found to have antimicrobial effects on C. difficile, but also had inhibitory effects on the beneficial bacterium B. bifidum. 30% ethanol extraction Crataegi fructus, Corni fructus and Mume fructus had antimicrobial effects on C. difficile without inhibiting the beneficial bacteria B. bifidum and L. plantarum. The MIC values of 30% ethanol extraction Crataegi fructus, Corni fructus and Mume fructus were found to be 10 mg/mL, 20 mg/mL and 5 mg/mL, respectively. Conclusions Crataegi fructus, Corni fructus and Mume fructus were identified as candidate medicines for C. difficile. Further researchs will need to be done in vivo, and to find an optimal extraction method accompanied by economic evaluation.

• 복식문화연구
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• 제29권4호
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• pp.554-571
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• 2021

The purpose of this study is to investigate the mediating effect of trust when a media broadcaster (such as a disc jockey [DJ]) acting as an information source and the content they provide during live commerce streaming affect acceptance intention. Live commerce is increasing rapidly, offering a new fashion distribution channel by supplementing possible shortcomings of existing online shopping. Data was collected for the empirical study from female consumers in their 20s who actively accepted fashion technology. Statistical analysis of the data was conducted using IBM SPSS Macro Process 3.5. First, the reliability and validity of the variables for information source characteristics, content informativeness, trust, and acceptance intention were verified, and each variable was confirmed as a single factor. Bootstrap analysis was performed using Macro Process Model 4 to reveal the effects of information source characteristics and content informativeness on acceptance intention. As a result of analyzing the mediating effect for each path model with trust as a parameter, it was found that both the direct and indirect effects of the mediating path were significant. This result means that the characteristics of information sources and content informativeness are partially mediated by trust. Therefore, to promote consumer behavior in a live commerce shopping environment, it is necessary to enhance trust. This can be achieved by a media broadcaster with fashion expertise to increase the perception of the attractiveness of the information source and to improve the usefulness of the fashion information being delivered.

• 한국미생물·생명공학회지
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• 제49권4호
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• pp.587-593
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• 2021

Infertility is a key issue affecting mood and behavior in men. Microorganisms are one of the primary etiological agents that may be associated with infertility. The objective of the present study was to identify bacterial causative agents from the semen of infertile subjects and determine the effect of bacterial infection on sperm quality, as well as determine the susceptibility of these bacteria to drugs. Forty semen samples from 30 infertile patients and 10 fertile individuals were collected. The pH, volume, motility, and concentration of semen were analyzed. The samples were processed and identified by biochemical testing using API identification kits. The antibiotic susceptibility pattern was determined using the disc diffusion method. Abnormal sperm quality was observed. The mean age of the individual and their sperm morphology, concentration, progressive motility, pH level, and pus cell content were 31.9 years, 2.7%, 10.4 million/ml, 27.3%, 8.3, and 5.7, respectively. Among the tested samples, oligoasthenozoospermia was found to show the highest occurrence, at 27/30 samples, followed by teratozoospermia, at 25/30 samples, and asthenozoospermia, at 22/30 samples. Of the tested infertile patients' sperm, 19, 6, and 5 isolates were identified as Escherichia coli, Klebsiella pneumonia, and Staphylococcus epidermidis, respectively. The results also revealed multi-drug resistance in the bacteria. Compared to that shown by the other tested antibiotics, amikacin showed higher activity against all isolated bacteria. However, the bacteria exhibited maximum resistance against gentamicin, cefotaxime, levofloxacin, and ampicillin. In conclusion, leukocytospermia and bacterial infections are possibly responsible for sperm abnormalities. Multi-drug resistant bacteria were detected. Gentamicin, cefotaxime, levofloxacin and ampicillin were shown the highest resistance, while amikacin was the most effective antimicrobial agent against the isolated bacteria.

• International Journal of Oral Biology
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• 제46권4호
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• pp.184-189
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• 2021

When luting indirect restorations with dual-cure resin cement (DCRC), excess cement can be easily removed by performing tack cure of DCRC for a few seconds. The purpose of this study was to evaluate whether different tack cure times affect polymerization shrinkage (PS) of the selected DCRC. One dual-cure resin cement (G-CEM LinkAce, GC) was used for measuring PS in light-cure (LC group), self-cure (SC group), and two tack-cure modes. In the first tack-cure subgroup, tack cure was performed for 1, 2, 3, and 5 seconds, followed by light cure after 2 minutes of remnant removal time in each case (TC-LC groups). In the other tack-cure subgroup, tack cure was performed for the same lengths of time, but followed by self-cure in each case (TC-SC groups). PS was measured by a modified bonded disc method for 1,800 seconds. One-way analysis of variance followed by Duncan's post hoc test was used to determine any statistically significant differences among the test groups (α = 0.05). When the DCRC was self-cured after tack cure, PS was significantly lower than when it was only self-cured (p < 0.05); however, tack cure time did not affect PS (p > 0.05). When the DCRC was light-cured, PS was not affected by tack cure or tack cure time (p > 0.05). Therefore, tack cure within 5 seconds did not negatively affect the final PS when the DCRC was light-cured after cement remnant removal.

• Animal Bioscience
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• 제35권1호
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• pp.138-146
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• 2022

Objective: The objective of the current study was to investigate the influences of conventional (CO) and deep litter (DE) systems on antimicrobial resistance in fecal Escherichia coli (E. coli). Methods: A cross-sectional study was carried out to detect antimicrobial resistance to E. coli in swine fecal samples in CO and DE systems located in western and northeastern Thailand. Individual rectal swab samples were taken only from healthy pigs. A total of 215 individual and healthy pigs were randomly selected for isolation and antimicrobial susceptibility test of E. coli by the disc diffusion method. The test panel included amoxicillin (AMX), colistin, doxycycline (DOX), enrofloxacin, gentamicin (GEN), kanamycin, neomycin (NEO), and trimethoprim-sulfamethoxazole (SXT). Results: There were significant (p<0.05) lower resistance levels for GEN, NEO, and SXT in the DE farms compared to those in the CO farms. There was a lower number of antimicrobial resistance agents (p<0.001) in the DE farms compared to those in the CO farms. This result was consistent with those in western (p<0.01) and northeastern (p<0.01) Thailand. Overall, antibiograms of AMX-SXT and AMX-DOX-SXT were found in the CO (19.09% and 20.91%, respectively) and the DE (16.19% and 24.76%, respectively) farms. No antimicrobial resistance (5.71%) was found and AMX (13.33%) resistant pigs in the DE farms, whereas the pattern of AMX-GEN-SXT (6.36%) and AMX-DOX-GEN-SXT (11.82%) resistant pigs was found in the CO farms. Conclusion: The DE system for pig farming was superior to conventional pig farming by lowering the resistance level of fecal E. coli to GEN, NEO, and SXT, with decreasing the number of antimicrobial resistance agents and inducing a small proportion of pigs to be free from antimicrobial resistance.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제11권1호
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• pp.59-66
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• 2022

본 논문은 플라잉디스크를 사용한 경기중 하나인 얼티미트 경기에 사물인터넷 기술을 접목하여 경기진행 사항을 선수중심 및 경기원반 중심으로 추적하며, 경기 결과에 대한 선수간 종합적인 관계분석을 수행하였다. 선수 및 경기원반에 GPS기능이 내장된 WiFi 모듈을 장착하여 경기 진행 중 선수의 ID, GPS로부터 수신된 위도/경도 값 및 시간이 실시간으로 데이터베이스에 저장되며, 경기진행용 모바일 앱을 통해 선수들간의 경기진행 상태에 대한 정보들도 동시에 데이터베이스에 저장된다. 경기종료 후 이러한 정보들에 기반하여 경기내용에 대한 종합분석을 수행 할 수 있는 시스템을 개발 하였다. 데이터베이스에 저장된 정보를 활용하여 선수중심의 경기진행상황 및 경기원반중심의 득점상황을 가상 경기장에서 동영상 형태로 재현 할 수 있도록 설계하였으며, Python프로그램을 활용하여 선수중심의 다양한 경기분석 정보를 각종 그래프로 표시하였다.

• 대한정형외과학회지
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• 제55권3호
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• pp.261-265
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• 2020

요추 후관절 주위 낭종은 신경근을 누름으로써 요통과 방사통, 신경성 파행을 일으킬 수 있는 드문 질환이다. 34세 남자가 심한 요통 및 우측 하지 방사통을 호소하였다. 자기공명영상에서 척추관 내에서 제3-4번 요추 추간판과 제4번 요추체 후면까지 우측으로 위치한 낭종이 보였다. 영상증폭기 감시하에서 주사 바늘 흡인을 시행하여 1.5 ml의 장액성의 노란 액체가 흡인되었다. 흡인 치료 후, 증상들이 즉각적으로 소실되었다. 자기공명영상 추시 촬영에서 낭종의 재발소견이 보이지 않았다. 저자들이 아는 한 국내에서는 요추 후관절 주위 낭종에 대한 직접적 바늘 흡인 치료에 대한 보고가 전혀 없기에 이 증례를 문헌 고찰과 함께 보고하는 바이다.

• 한국주조공학회지
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• 제42권2호
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• pp.77-82
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• 2022

일방향응고 초내열합금 CM247LC의 응고조건에 따른 조직과 기계적 특성을 고찰하기 위해 초기 응고조건을 인위적으로 변화시켜 일방향응고를 진행하였다. 초기 응고 조건은 알루미나 판의 삽입, 접종재의 삽입, Ni foil의 삽입과 냉각판에 직접 주입 등으로 조절하였으며, 이에 따라 초기 결정립의 수의 많은 차이를 보였으며 응고방향과 평행으로 성장하는 결정립의 형태 및 γ' 석출상의 크기 등에서도 많은 차이를 보였다. 냉각속도가 빠른 용탕의 냉각판에 직접 주입한 경우 많은 결정립, 미세한 γ'상 및 γ-γ'공정상 등이 나타났다. 빠른 냉각은 고체/액체 사이의 온도구배를 증가시켜 일방향응고 후 1차 수지상 간격을 미세하게 함으로써 우수한 인장특성을 갖게 하였다.

• Medical Lasers
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• 제10권1호
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• pp.22-30
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• 2021

Background and Objectives Ocular alkali burns cause severe damage to the ocular tissues and vision loss. Solcoseryl is a standardized calf blood extract that normalizes the metabolic disturbance and aids in maintaining the chemical and hormonal balance and has been used to treat burns in various tissues. This study examined the effects of Solcoseryl on a rat corneal alkali burn model. Materials and Methods Twenty rats were assigned randomly to four equal groups, including alkali burn, hyaluronic acid, Solcoseryl eyedrop, and Solcoseryl gel. A corneal alkali burn was induced by a NaOH-soaked paper disc. The treatments were given twice a day, every day. The wound area was measured after 24 and 48 hours, and the degree of neovascularization and corneal opacity were scored every week. The rats were sacrificed after three weeks for immunohistochemistry (IHC) to compare the level of inflammatory cytokines, IL-1β, IL-6, and TNF-α. The thickness of the retinal layers was compared to observe any changes in the retina. Results The use of Solcoseryl on corneal alkali burn accelerated wound healing with less neovascularization, greater opacity, and less cataract. IHC showed that the inflammation of the cornea was controlled by both the hyaluronic acid and Solcoseryl treatments. On the other hand, the inflammation had spread to the retina. When the dosage forms were compared, eyedrops were more effective on corneal inflammation, while the gel-type had a greater effect on retinal inflammation. Conclusion Solcoseryl was effective in accelerating the wound healing rate on a corneal alkali burn but could not prevent the spread of inflammation from the cornea to the retina. Eyedrops were more effective on inflammation in the cornea, and the gel was more effective in the retina.