• Korean Journal of Veterinary Service
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• v.45 no.2
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• pp.111-116
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• 2022

The purpose of this study is to evaluate the reduction effect of microbially activated peat on odor generated by livestock farms. The odor gas was measured by stirring the livestock manure sample with the existing litter and the microbially activated peat (Healtha Peat) was developed by this research team. In outdoor farm experiment, the measurements were performed by comparing broilers farm using rice husks and microbially activated peat as litter. The weight, mortality, shipment date, and odor levels (NH₃) were measured before and after experiment. The result showed that NH₃ levels were reduced by 100% in the Healtha Peat mixed group, Healtha Peat and rice husks mixed group. In the peat mixed group, Healtha Peat and saw dust mixed group showed reduce value at 99.6% and 99.1%, respectively. However the rice husks mixed group and saw dust mixed group showed a relatively weak NH₃ reduction effect with values of 57.5% and 84.8%, respectively. After 3 months, the Healtha Peat mixed group and Healtha Peat and rice husks mixed group showed the highest NH₃ reduction effect persistence. In the outdoor farm experiment, NH₃ was present in farms using rice husks, but not in farms using Healtha Peat. In farms using Healtha Peat, the mortality and NH₃ were reduced by 75% and >90%, respectively. The average body weight increased 18% and resulted to 10% decrease in the shipping date. These results implied that microbially activated peat has a clear effect on farm NH₃ reduction and affects the productivity of farm animals.

• Journal of Practical Engineering Education
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• v.14 no.1
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• pp.1-10
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• 2022

Learning C programming language in electronics education is an important basic education course for understanding computer programming and acquiring the ability to use microprocessors in embedded systems. In order to focus on understanding basic grammar and algorithms, it is a common teaching method to write programs based on C standard library functions in the console window and learn theory and practice in parallel. However, if a student wants to start a project activity or go to a deeper stage after acquiring some basic knowledge of the C language, using only the C standard library function in the console window limits what a student can express or control with the C program. For the purpose of making it easier for a student to use graphics or multimedia resources and increase educational value, this paper studies a case of applying Simple DirectMedia Layer (SDL), an open source software, into the C programming language learning process. The SDL-based programming course applied after completing the basic programming curriculum performed in the console window is introduced, and the educational value is evaluated through a survey. As a result, more than 56% of the respondents expressed positive opinions in terms of improved application ability, stimulating interest, and overall usefulness, and less than 4% of them had negative opinions.

• Journal of The Korean Society of Inherited Metabolic disease
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• v.21 no.1
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• pp.22-27
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• 2021

Propionic acidemia (PA) is an inherited autosomal recessive disorder, due to the deficiency of propionyl-CoA carboxylase (PCC). PCC is the enzyme which catalyzes the conversion of propionyl-CoA to D-methylmalonyl-CoA, and it is critical for the metabolism of amino acids, odd-chain fatty acids, and side chains of cholesterol. The clinical manifestations present mostly at the neonatal period with life-threatening metabolic acidosis and hyperammonemia. Here, we described a case of a 16-year-old Korean boy with late-onset PA who presented with embolic cerebral infarction due to dilated cardiomyopathy (DCMP) with left ventricular noncompaction. And he has family history of sudden cardiac death, so we performed metabolic screening and genetic tests. Elevated levels of 3-hydroxypropionic acid, methylcitric acid and propionylglycerine were detected in urine. Plasma acylcarnitine profile showed elevated propionylcarnitine (C3). Diagnosis of PA was confirmed by genetic analysis, which revealed compound heterozygous mutations, c.[1151T>G] (p.[Phe384Cys]) and c.[1228C>T] (p.[Arg410Trp]) in PCCB gene. His heart function is in improving state and the results of biochemical analysis are stable with heart failure medication and metabolic managements. We present a case of patient without episodes of metabolic decompensation who manifests DCMP as the first symptom of PA.

• Journal of Korean Elementary Science Education
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• v.41 no.1
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• pp.1-13
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• 2022

This study aimed to explore 'Becoming Science Teachers' seen in pre-service elementary teachers' inquiry into the features and roles of tree stems, based on Deleuze's Theory of Becoming. As research subjects, this study selected 30 pre-service elementary teachers and made them carry out textbook activities and advanced activities for about a month. Based on the results of these activities, they kept reflective inquiry diaries, and this study analyzed them and found out how far they attained according to Deleuze's mechanism of generating differences. Interestingly, it was found out that most of them attained the phase of escape and even the phase of deterritorialization and showed the highest frequency of establishing various know-hows about inquiries needed to teach students in the future. However, it was also analyzed that over 60% of the diaries still remained in phases prior to the phase of deterritorialization through escape. When analyzing rhizomatic thought that helped attain deterritorialization through escape, this study found out that all the 6 types were seen and functioned to attain deterritorialization. Therefore, it is necessary to provide challenging inquiry environments that pre-service elementary teachers have never experienced before so that they can go through a phased process for overcoming striated space in inquiry and attain reterritorialization.

• Journal of Powder Materials
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• v.29 no.5
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• pp.411-417
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• 2022

Environmental issues such as global warming due to fossil fuel use are now major worldwide concerns, and interest in renewable and clean energy is growing. Of the various types of renewable energy, green hydrogen energy has recently attracted attention because of its eco-friendly and high-energy density. Electrochemical water splitting is considered a pollution-free means of producing clean hydrogen and oxygen and in large quantities. The development of non-noble electrocatalysts with low cost and high performance in water splitting has also attracted considerable attention. In this study, we successfully synthesized a NiCo₂O₄/NF electrode for an oxygen evolution reaction in alkaline water splitting using a hydrothermal method, which was followed by post-heat treatment. The effects of heat treatment on the electrochemical performance of the electrodes were evaluated under different heat-treatment conditions. The optimized NCO/NF-300 electrode showed an overpotential of 416 mV at a high current density of 50 mA/cm² and a low Tafel slope (49.06 mV dec^-1). It also showed excellent stability (due to the large surface area) and the lowest charge transfer resistance (12.59 Ω). The results suggested that our noble-metal free electrodes have great potential for use in developing alkaline electrolysis systems.

• Journal of the Korean Society for information Management
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• v.39 no.3
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• pp.69-97
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• 2022

Parents' interest and care are very important for their children in the process of growing up, but parenting is also very unfamiliar and difficult for themselves. Parents constantly need information related to parenting, and in order to solve this problem, they try to obtain information through informal meetings or social relationships among parents at an individual level, which often brings up conflicts and stresses. Accordingly, the purpose of this study is to explore the characteristics of social networks among parents and to understand the influence of the network characteristics on information-sharing intention and information-sharing satisfaction. To this end, a survey questionnaire was developed based on previous studies and was administered among parents whose children are in a daycare center. Then, the data was analyzed using social network analysis (SNA) method. Findings indicate that the correlation among the social networks, the information -sharing intention, and the information-sharing satisfaction was significant, but the influence of the social networks on the information-sharing intention, and the information-sharing satisfaction was not established. It was also found that the intention to receive help was higher than the desire to help others. Policy suggestions to meet parents' information needs and the need to reconsider the role of local public libraries were presented.

• Journal of Society of Preventive Korean Medicine
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• v.26 no.3
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• pp.41-48
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• 2022

Objectives : This study aimed to investigate the adequacy and satisfaction of the school doctor program of Korean medicine (especially sex education) for elementary school students, to examine differences in parents' perception or satisfaction according to the use of Korean Medicine. Methods : The participants were parents of one elementary school that provided sex education as the Seoul school doctor program of Korean medicine. A self-reported online survey was conducted. The questionnaire consisted of parents and children's experience in using Korean medicine, perception of the school doctor program of Korean Medicine, evaluation and satisfaction of school sex education. Results : The survey was conducted on May 14^th, 2022 during the school doctor program of Korean Medicine briefing session. A total of 92 parents participated in the survey, and the 88 respondents analyzed who voluntarily gave consent. Of the experience of Korean Medicine, 71 parents (80.68%) had lifetime, 16 (18.18%) respondents had within the last three months, and 40 (45.45%) said their children had. Parents' experience of using Korean medicine was related to that of their children's, but there was no difference in the satisfaction the school doctor program of Korean Medicine. Conclusions : The survey showed that parents of an elementary school where Korean Medicine doctors carried out school doctor program evaluated that the school doctor program of Korean Medicine had a positive effect on students' health. There was no difference between parents' satisfaction on school doctor program by the use of Korean medicine.

• Membrane Journal
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• v.32 no.6
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• pp.486-495
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• 2022

This study presents the improved recovery efficiency of rare metal ions through the modified separation membrane wettability and hydrogen ion permeation in the anion exchange membrane (AEM) under the recovery process of combined electrodialysis and solvent extraction. Specifically, the wettability of the separator was enhanced by hydrophilic modification on one separator surface through polydopamine (PDA) and lipophilic modification on the other surface through SiO₂ or graphene oxide (GO). In addition, the modified surface of AEM with polyethyleneimine (PEI), PDA, poly(vinylidene fluoride) (PVDF), etc. reduces the water uptake and modify the pore structure for proton ions generation. The suppressed transport resulted in the reduced hydrogen ion permeation. In the characterization, the surface morphology, chemical properties and composition of membrane or AEM were analyzed with Scanning Electron Microscopy (SEM) and Fourier Transform-Infrared Spectroscopy (FT-IR). Based on the analyses, improved extraction and stripping and hydrogen ion transport inhibition were demonstrated for the copper ion recovery system.

• Journal of Korean Medicine Rehabilitation
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• v.33 no.2
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• pp.33-48
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• 2023

Objectives The purpose of this study is to investigate the latest research trends regarding the traditional Chinese medicine treatment of plantar fasciitis and suggest the direction for future research. Methods We investigated recent clinical studies about traditional Chines medicine treatment for Plantar fasciitis through searching the electronic database of China National Knowledge Infrastructure. We analyzed the characteristics of selected studies according to study design, criteria for diagnosis and evaluation, periods, treatment methods. Results Twenty-six clinical studies published from 2018 to 2022 were analyzed. Acupuncture, herbal medication, herbal fumigation and washing, herbal integration, herbal external application, and manual therapy were performed for the treatment of plantar fasciitis in China. In particular, studies on acupuncture, herbal fumigation and washing, and manual therapy were actively conducted and all of these treatment methods were effective. Conclusions Various Chinese medical interventions are being studied in China for the treatment of plantar fasciitis. However, in order to reinforce evidence for effectiveness of treatment, additional high-level clinical studies are required. It is considered that additional research related to the Korean medicine treatment for plantar fasciitis is needed in the future in Korea.

• Journal of the Korean Society for Library and Information Science
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• v.57 no.3
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• pp.191-210
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• 2023

The purpose of this study is to draw implications through domestic and international best case studies of library programs, and to suggest ways to improve a public library reading programs through analysis based on the 3rd Reading Culture Promotion Basic Plan in line with the changing role of future libraries. there is To this end, first, prior studies were analyzed from various angles to derive clustering standards for library programs. Based on this, programs of various domestic and foreign libraries were analyzed based on clustering criteria. And based on the clustering criteria of library programs and the 13 key tasks under the 4 strategies of the 3rd Reading Culture Promotion Basic Plan, the status of a specific public library reading programs was analyzed. Through this, in consideration of the demand of users in the era of the 4th Industrial Revolution, participatory reading promotion programs are expanded, and in response to the post-COVID-19 era, beyond face-to-face library services, non-face-to-face and non-contact library services are also considered. A development plan was presented. It is expected that this analysis and application attempt will ultimately go beyond the unit library and contribute to improving the public library service in Korea into a library program closely related to the lives of users.