본 논문은 회분식 반응기에서 습식 산화법으로 합성한 칼륨 페레이트(VI)에 의한 난분해성 아조 염료Reactive Black 5의 분해 과정을 연구하는 것을 목적으로 한다. 수용액에서 RB5의 분해는 pH, Ferrate (VI) 투입량, 초기 농도, 수용액 온도 등 다양한 변수의 조건에서 연구되었다. RB5 경우에는 최대 분해 효율은 pH 7.0에서 63.2%가 달성되었으며, 이 실험 조건에서 얻은 kapp 값은 190.49 M-1s-1 으로 나타났다. 온도 또한 가장 중요한 매개 변수 중 하나로 연구되었으며, 그 결과로부터 온도(45°C까지)를 증가시키면 페레이트(VI)에 의한 아조 화합물 염료의 분해 효율이 증가하고, 온도가 45°C를 초과하면 분해 효율이 저하되는 것으로 나타났다.

본고는 『헨리 6세』 2부와 3부가 가부장제의 이념을 바탕으로 남녀 간의 뚜렷한 역할 구분에 기초하고 있다고 보고 전통적인 성 역할에 따르지 않는 마가렛과 같은 여성의 양상을 살핀다. 주로 마가렛의 용맹성, 전투력과 성적 매력과 방종이 주변 남성 인물의 가부장적인 가치에 대립되는 모습을 추적한다. 마가렛과 일리노어 등이 권력을 추구하는 과정에서 남성들, 특히 영국 남성을 대표하는 기사도적 영웅들과 대항하는 양상을 보이는데 이 여성 전사들이 대표하는 가치가 어떻게 남성들의 이상적 영웅주의나 부자간의 혈연 중심 관계에 대립하는지도 살핀다. 일부 남성 인물들이 감정에 치중하는 연인의 모습을 보이며 남성간의 유대를 약화시키는 결과에 이르는 아이러니한 상황 또한 살펴본다. 남성들이 이들 여성과 관련하여 남성성을 잃게 되는 과정을 분석함으로써 『헨리 6세』 2부와 3부에 담긴 가부장제의 양상과 여성 전사의 전복적 힘을 충실히 고찰하고자 한다.

An optical fluorescence quenching sensor based on functionally modified iron-doped carbon nanoparticles was designed for the selective and sensitive Cr(VI) ion detection. Multifunctional iron-doped carbon nanoparticles were enclosed in the scaffolds of a promising stable nanocarrier system called hyperbranched polyglycerol (HPG), which has been fluorescently modified with 1-pyrene butyric acid using the Steglich esterification procedure. The therapeutic and diagnostic capabilities were boosted when these nanoparticles were enclosed in the fluorescently modified dendritic structure, HPG. Iron-doped carbon nanoparticles coupled with fluorescently modified hyperbranched polyglycerol can be used as a sensor for metal ions and can then be used to successfully remove them from a sample. Moreover, the synthesised nanoparticles demonstrated promising antimicrobial efficacy against bacteria and fungi. These results are also discussed in detail.

2021년 우리나라 성범죄 발생은 6,321건, 범죄률 13.5%로 교정시설에서는 성범죄 예방을 위해 다양한 프로그램을 운영하고 있지만, 여전히 성범죄의 재범률은 증가하 고 있다. 그래서 본 연구에서는 변증법적 행동 치료이론을 기반으로 성범죄자의 재범 예방 프로그램을 개발하고자 한다. 프로그램의 개발은 선행연구와 요구조사를 바탕으 로 하였다. 프로그램은 변증법적 행동치료(DBT)의 4가지 핵심기술인 마음 챙김, 정서 조절훈련, 고통 감내, 대인 관계 증진 기술로 구성하였다. 연구설계는 비동등성 대조 군 사전-사후 설계(Nonequivalent control group pretest-posttest design)로 혼 합연구 방법(Mixed Methods Design)으로 프로그램의 효과를 검증하였다. 연구대상 자는 G*Power 3.1 program의 표본 크기에 맞게 G시 교정시설에 수감 된 남성 성범 죄자 중에서 총 28명 선정하고, 무작위 할당 표집으로 실험집단 14명과 대조집단 14 명으로 배정하였다. 하지만 이감과 중도 연구 참여 거부로 인한 탈락자를 뺀 실험집단 13명과 대조 집단 12명의 자료를 최종분석하였다. 양적 분석은 SPSS 27.0 프로그램 독립표본 검증(Independent t-test)으로 동질성을 확보를 확인하고, 집단 간 변화를 이원 혼합설계 반복측정 변량분석(Repeated measures ANOVA)으로 살펴보았다. 질적 자료는 Braun과 Clark(2006)가 제시한 주제 분석방법으로 분석하였다. 연구 결 과는 다음과 같다. 첫째, 변증법적 행동치료 프로그램에 참여한 실험집단이 대조집단 보다 대인 간의 공감 반응과 성인 애착에서 통계적으로 유의미하였으며, 변화의 효과 는 추후검사에서도 통계적으로 유의미하게 유지되었다. 둘째, 프로그램 참여 경험을 분석한 결과 36개의 하위 주제, 몇10개의 상위 주제가 나타났다. 이를 분석영역인 충 동성, 공격성, 자기통제력에 재배열하였다. 충동성에서는 이성에의 의지 폭력 행동의 자발적 제어, 예측 능력의 강화, 분노의 원인 탐색 주제가 돌출되었다. 공격성에서는 파괴 본능을 건강한 에너지로 전환, 타인에 대한 적대적 감정 없애기, 낮은 자리에 서 기라는 주제가 출연했다. 자기통제력에서는 유혹을 이길 수 있는 힘의 배양, 현재의 만족보다는 미래의 성공, 규범적인 행동 목표설정이 나타났다. 연구자들은 연구 결과에 근거하여 논의하였고, 교정기관 내에서 성범죄자들의 사회 재적응을 지지할 수 있는 실천적 접근을 제안함으로써 재범을 예방하고자 하였다. 본 연구는 기존의 교정시설 에서 시도하지 않은 변증법적 행동 치료이론을 접목한 프로그램의 개발하였기에 성범 죄자 프로그램에 새로운 패러다임을 시도하였다는 점에서 선행연구들과 차이가 있다.

수용액에서 EBT의 분해는 pH, Ferrate (VI) 투입량, 초기 농도, 수용액 온도 등 다양한 변수의 조건에서 연구되었다. 최대 분해 효율은 pH 7.0에서 95.42%가 달성되었으며, 이 실험 조건에서 얻은 kapp 값은 872.87 M-1s-1 이었다. EBT 분해율은 Ferrate (VI)의 투입량이 증가함에 따라 증가하였으며 EBT 초기 농도가 감소함에 따라 EBT 분해의 초기 속도 상수가 증가하였다. 또한 EBT의 분해율은 온도가 10°C에서 45°C에 도달할 때까지 수용액의 온도에 따라 증가하였으며 이 실험조건에서 활성화 에너지 값은 EBT 분해에 대해 11.9 kJ/mol의 값이 도출되었다. 따라서 분해 실험의 결과는 Ferrate (VI)가 수용액상에서 EBT를 효과적으로 분해시킬 수 있음을 보여주고 있다.

In this study, Ni nanoparticle supported by graphene oxide (GO) (Ni-GO) is successfully synthesized through hydrothermal synthesis and calcination, and Cr(VI) is extracted from aqueous solution. The morphology and structure of Ni- GO composites are characterized by scanning electron microscopy (SEM), trans mission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). High-resolution transmission electron microscopy (HRTEM) and XRD confirms the high dispersion of Ni nanoparticle after support by GO. Loading Ni on GO can obviously enhance the stability of Ni-GO composites. It can be calculated from TGA that the mass percentage of Ni is about 60.67%. The effects of initial pH and reaction time on Cr(VI) removal ability of Ni-GO are investigated. The results indicate that the removal efficiency of Cr(VI) is greater than that of bared GO. Ni-GO shows fast removal capacity for Cr(VI) (<25 min) with high removal efficiency. Dynamic experiments show that the removal process conforms to the quasi-second order model of adsorption, which indicates that the rate control step of the removal process is chemical adsorption. The removal capacity increases with the increase of temperature, indicating that the reaction of Cr(VI) on Ni-GO composites is endothermic and spontaneous. Combined with tests and characterization, the mechanism of Cr(VI) removal by rapidly adsorption on the surface of Ni-GO and reduction by Ni nanoparticle is investigated. The above results show that Ni-GO can be used as a potential remediation agent for Cr(VI)-contaminated groundwater.

Tetracycline is one of the most commonly used as antibiotics for the livestock industry and it is still widely used nowadays. Tetracycline and its metabolites are excreted with excrement, which is difficult to completely removed with conventional sewage treatment, therefore it is apprehended that the tetracycline-resistant bacteria occurs. In this study, the oxidant named ferrate(VI) was used to degrade the tetracycline and investigate the reaction between ferrate(VI) and tetracycline under various aqueous conditions. The highest degradation efficiency of tetracycline occurred in basic condition (pH 10.1 ± 0.1) because of the pKa values of tetracycline and ferrate(VI). The results also showed the effect of water temperature on the degradation of tetracycline was not significant. In addition, the dosage of ferrate(VI) was higher, the degradation of tetracycline and the self-degradation of ferrate(VI) also higher, finally the efficiency of ferrate(VI) was lower. The results said that the various mechanisms effects the reaction of ferrate(VI) oxidation, it required the consideration of the characteristics of the target compound for optimal degradation efficiency. Additionally, intermediate products were detected with LC/MS/MS and three degradation pathways were proposed.

Tetracycline is one of the most commonly used antibiotics in domestic and foreign livestock industries to suppress the growth of pathogens. Tetracycline has been reported as a non-biodegradable compound. Therefore it has been not completely removed in the sewage treatment process. In this study, tetracycline was degraded using liquid ferrate (VI). Based on these experiments, the optimal water condition (pH and water temperature) were selected, appropriate liquid ferrate (VI) dosage was calculated, and finally the degradation pathway was estimated with the intermediate products detected by LC/MS/MS. All degradation experiments were completed within 30 seconds and the optimal condition was obtained in basic condition (pH 10) at room temperature (20℃). And the appropriate molar ratio between tetracycline and liquid ferrate (VI) was 12.5:1. Finally, 12 intermediate products were detected with LC/MS/MS and the degradation pathways and the degradation pathways and proposed the degradation pathways.

We report the detection of exoplanet candidates in orbits around HD 60292 and HD 112640 from a radial velocity (RV) survey. The stars exhibit RV variations with periods of 4953 days and 6136 days, respectively. These detections are part of the Search for Exoplanets around Northern Circumpolar Stars (SENS) survey using the ber-fed Bohyunsan Observatory Echelle Spectrograph installed at the 1.8-m telescope of the Bohyunsan Optical Astronomy Observatory in Korea. The aim of the survey is to search for planetary or substellar companions. We argue that the periodic RV variations are not related to surface inhomogeneities; rather, Keplerian motions of planetary companions are the most likely interpretation. Assuming stellar masses of 1:7  0:2M⊙ (HD 60292) and 1:8  0:2M⊙ (HD 112640), we obtain minimum planetary companion masses of 6:5  1:0MJup and 5:0  1:0MJup, and periods of 495:4  3:0 days and 613:2  5:8 days, respectively.

This study is the process of finding answers to the following questions. Cultural content is needed to study Vietnamese language? Do Vietnamese language learners feel the need for classes using cultural content? Do Vietnamese teachers use cultural contents in class? In order to find out the answer, I conducted a questionnaire survey on Vietnamese students in Chungnam Foreign Language High School, interviewed teachers and analyzed the case examples. As a result of the questionnaires and interviews, it was found that the necessity of cultural contents development in Vietnamese language education is a requirement for both teachers and learners. Based on these results, we developed a case study on cultural education contents for Vietnamese language education. However, the model of teaching Vietnamese language utilizing cultural contents needs to be developed through more diverse academic analysis. Its effectiveness should also be investigated in depth. We will propose this as a future research project.

This paper provided the information related to the removal of 2,4,6-tribromophenol using in-situ and stable liquid ferrates(VI). This research’s goal was to observe the differences of oxidation power between in-situ liquid ferrate(VI) and stable liquid ferrate(VI). The in-situ liquid ferrate(VI) (FeO4 2-) has been successfully produced with the concentration 42,000 ppm (Fe) after 11 minutes of reaction time. The stable liquid ferrate(VI) was also successfully produced following the modification method by Sharma with the produced concentrations 7,000 ppm. The stable liquid ferrate(VI) was stable for 44 days and slightly decreased afterwards. This research has been carried out using 2,4,6-tribromophenol as the representative compound. Both of ferrates(VI) have the highest oxidation capability at the neutral condition. Furthermore, the stable liquid ferrate(VI) has higher oxidation power than the in-situ liquid ferrate(VI).

This study was performed to determine the prevalence and associated risk factors of osteoarthritis in the elderly using the Korea National Health and Nutrition Examination Survey (2013~2014 KNHANES VI). A total of 2,148 (936 males, 1212 females) elderly participants aged 65 years or older were selected. Prevalence of osteoarthritis was higher in 460 female (80.7%) and 167 rural (29.1%) groups, than in 110 male (19.3%) and 404 urban (70.9%) groups. While the mean values of LDL-cholesterol, triglyceride level, and waist circumference were significantly higher in the osteoarthritis group than the normal group, other parameters including height, HDL-cholesterol, fasting blood glucose, hemoglobin and hematocrit values were not. Quality of life (EQ-5D) was also significantly lower in the osteoarthritis group. The results of logistic regression analysis showed that smoking, alcohol intake, obesity, hypercholesterolemia and energy intakes were significantly different in regards to the prevalence of osteoarthritis. This study suggests that obesity and energy intakes were associated with osteoarthritis, whereas risk factors of chronic disease, such as hypertension, Hypo-high density lipoprotein, hypertriglyceridemia, anemia, diabetes, vigorous physical activity, moderate physical activity and walking were not. Long-term prospective study is necessary to investigate the effects of these factors on osteoarthritis.

Nitrogen-doped carbon nanosheets with a developed porous structure were prepared from polyurethane foams by hydrothermal carbonization following ZnCl2 chemical activation. Scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, solid state 13C nuclear magnetic resonance (NMR) spectra and X-ray photoelectron spectroscopy were used to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon nanosheets was investigated. The results showed that the maximum removal capacity for chromium of 188 mg/g was found at pH=2.0 with PHC-Z-3. pH had an important effect on Cr(VI) removal and the optimal pH was 2.0. Moreover, amino groups and carboxyl groups in the nitrogen-doped carbon nanosheet played important roles in Cr(VI) removal, and promoted the reduction of Cr(VI) to Cr(III).