A two-stage continuous process was developed for improved silica extraction from rice husk. The consists of attrition ball milling and alkaline leaching methods. To find the optimum conditions process, effects parameters, such as solution type reaction conditions, on yield were investigated in a batch process. use NaOH showed slightly higher than KOH. found to be 0.2 M, 80 °C, 3 h, 6% (w/v) concentration, temperature, duration time, solid content, respectively. Attrition used make...

Air pollution control is necessary to decrease the burden on older adults with cognitive impairment, especially in low- and middle-income countries (LMICs).This study retrospectively examined effect of cumulative exposure air pollution, including NO2, SO2, CO, fine particulate matter (PM)10, PM2.5, O3, function individuals.Community-dwelling who underwent Mini-Mental State Examination (MMSE) from 2007 2018 were included analyses. We excluded individuals diagnosed dementia at baseline, while...

Abstract Streptococcus bovis/equinus complex (SBSEC) is one of the most important lactic acid-producing rumen bacteria causing subacute ruminal acidosis. Despite significance bacteria, lytic bacteriophages (phages) capable infecting SBSEC in have been rarely characterized. Hence, we describe biological and genomic characteristics two phages (designated as vB_SbRt-pBovineB21 vB_SbRt-pBovineS21) various species, including newly reported S . ruminicola The isolated were morphologically similar...

In response to the increasing nosocomial infections caused by antimicrobial-resistant coagulase-negative staphylococci (CoNS), bacteriophages (phages) have emerged as an alternative antibiotics. Staphylococcus ureilyticus, one of representative species CoNS, is now considered a notable pathogen that causes bloodstream infections, and its biofilm-forming ability increases pathogenicity resistance antimicrobial agents. this study, lytic phage infecting S. ureilyticus was newly isolated from...

In the study, a preliminary experiment on removal of heavy metals from industrial wastewater sludge was carried out to evaluate feasibility electrokinetic separation. Four different types processing fluid—tap water, ethylenediaminetetraacetic acid (EDTA), citric (CA), and 0.1 M nitric acid—were tested. EDTA found be most effective agent within set chemicals tested for removing because its strong chelating ability with metals. The efficiency Pb Cu higher than that Zn Ni all fluids. tap EDTA,...

Antimicrobial air filters are required to protect humans from the risk of secondary bioaerosol pollution as well airborne particles. Three plant extracts (tea-tree oil, rosemary, and garlic) were selected replace antimicrobial chemicals in filters. The activity was investigated using Micrococcus luteus Escherichia coli. Phytochemicals present three identified a gas chromatograph coupled with mass spectrometer. spray-coated on polyethylene terephthalate filter surfaces silicate polymeric...

Hyo-Jeong Hwang, Soon-Hee Park, Seon-Young Soo-Rin Ahn, Su-Jin Yoo-Jin Lee, Kwang-Jin Chon, Chung-Hwa Song, Dae-Gyun Moon, and Kyung-Ok Shin. Journal of the Korean Society Food Science Nutrition 2023;52:341-9. https://doi.org/10.3746/jkfn.2023.52.4.341

Rice husks are a feedstock of biogenic silica because their high content. After extraction, solid residue comprising mostly carbohydrates is present. Solid valorization important for closed-loop systems using rice husk and has minimal negative environmental impacts. In this study, we used that was generated by extractionto anaerobic digestion producing biomethane. The characterized in terms total solids, volatile pH, composition, particle size. Changing the characteristics increased biogas...

We present a real-time algorithm for realistically deforming 3D human blood vessels, while automatically detecting and avoiding interference among large number of vessels under deformation. Sweep surfaces are employed this purpose. Using dynamic bounding volume hierarchy, specially designed sweep surfaces, we support collision detection other related geometric computations in real time. Copyright © 2013 John Wiley & Sons, Ltd.

This study aimed to investigate the association between physical activity and depressive mood among Korean adults with chronic diseases.This analyzed 2014 National Health Nutrition Examination Survey data. The was restricted participants aged ≥20 years who had completed survey were not diagnosed as having depression. After exclusion, 4,676 included in final analysis. Subjects categorized according their level of activity. Physical assessed using International Activity Questionnaire. Patients...

Accessible summary The Attitudes Toward Acute Mental Health scale (ATAMHS) was translated into Korean with attention to linguistic and content equivalence. Nine items were eliminated from the version because of low correlations overall due differences in clinical nursing environments culture between South Korea English‐speaking countries. results this study showed that ATAMHS (ATAMHS‐K) is a reliable valid for measuring attitudes toward mental illness nurses students an acute care setting....

The impact of attrition ball-mill pretreatment on food waste particle size, soluble chemical oxygen demand (SCOD), biochemical methane potential, and microbial community during anaerobic digestion was investigated based milling speed time. uniformity size improved with increasing SCOD the pretreated samples increased to 4%, 7%, 17% at speeds 150, 225, 300 rpm, respectively, compared control. Milling time did not significantly change SCOD. cumulative productions 430, 440, 490 mL/g-VS were...

Vehicular emissions are major sources of gaseous and particulate matter pollutants in urban atmospheres. Stringent environmental regulations on vehicular have been consistently implemented, leading to a substantial decrease exhaust emissions. In contrast, non-exhaust increasing with the growing share electric vehicles. Non-exhaust account for approximately 90% total However, standardized guidelines not established, largely due challenges estimating ambient concentrations from sources. this...

Objective This study investigated the neurocognitive characteristics of patients who visited an outpatient clinic requesting diagnosis and treatment for adult attention-deficit/hyperactivity disorder (ADHD).Methods The patients’ electronic medical records were retrospectively reviewed. Neurocognitive test results compared using Student’s t-test according to their chief complaint, depressive symptoms, childhood history, intelligence quotient (IQ). affecting subjective symptoms ADHD analyzed...

본 연구는 보건복지부의 계획 발표에 따라 공론화 된 광범위한 상담사 제도의 확립이 이뤄지기 위해서 필요한 요소가 무엇인지 탐색하는 것을 목적으로 한다. 이를 위한 핵심이론으로 형태발생 이론을 제시한다. 형태 발생 사회이론은 구조·문화적 조건화를 통해 행위자 간의 상호작용을 지정하여 정교화를 설명하는 이론이 다. 연구 방법은 두 가지 단계로 나눌 수 있다. 첫째, 사회이론을 기반으로 하여 청소년 상담사제도의 구 조·문화적 조건화와 분석하여 제도화 과정을 분석한다. 둘째, 동일한 분석틀을 사용하여 현재 공론화되 는 제도화를 분석하고, 그에 따른 시사점을 도출한다. 상담사제도는 조건이 보호적인 성향을 띈다. 1990년대 정부의 주도로 큰 상호작용 없이 기반을 조성하였고 2000년대 민간의 합의를 이뤄냈다. 반해 공론화되는 제도는 난립하는 민간 자격증으로 인해 의견의 일치가 되 지 않았고. 선택 강요적 연구의 시사점은 공론화되고 있는 상담사제도를 제 도화된 청소년상담사와 비교하여...