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김은호,성낙창,김수생,김국태,이영형 동아대학교 환경문제연구소 1998 硏究報告 Vol.21 No.1
Dyeing has always had a pressing need for techniques that allow economical pretreatment for color removal in wastewater. The effectiveness of adsorption for color removal from dyeing wastwater has made it an ideal alternative to other expensive treatment options. This study deals with an investigation on four waste resources locally available in dyeing wastewater treatment for color removal. Peat, bentonite, slag and fly ash were utilized for this study and their performance evaluated against that of granular activated carbon. Color of dyeing wastewater was high removed in peat, bentonite and slag except for fly ash. In point of recycling, if waste resources substituted for a valuable adsorbent such as granular activated carbon, peat, bentonite and slag could look forward to an expected economical effect.
양영철,장성호,성낙창,김수생,김철 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1
This study has been carried out to provide the basic data then biofilm with activated carbon was used for (Cr(Ⅵ)-containing wastewater treatment. The results from this study are follows; 1. Substrate removal rate constants were 0.451∼0.861 at A reactor, 0.462∼0.899 at B reactor and 0.418∼1.033 at C reactor. 2. CR(Ⅵ) removal efficiencies with dosage of CR(Ⅵ) indicated below 40% when CR(Ⅵ) dosage was over 10㎎/l at A and B reactor, and over 20㎎/l at C reactor, no relation with volume loading rate. 3. COD removal efficiencies with dosage of CR(Ⅵ) were changed when CR(Ⅵ) dosage was 10㎎/l in case of 1.6, 3.2㎏·COD/m³day at A reactor, was 20㎎/l in case of 1.6, 3.2㎏·COD/m³·day at B reactor, was 25㎎/l in case of 1.6, 3.2㎏·COD/m³·day at C reactor. 4. NH₄^(+) -N removal efficiencies with dosage of CR(Ⅵ) were changed when CR(Ⅵ) dosage was 1㎎/l, 10㎎/l at A, B reactor, not related with volume rate, was 20㎎/l in case of 3.2, 4.8㎏·COD/m³·day at C reactor.
음률을 사용하는 무의미음절 청킹과 EMR아동의 단기기억 활성화
왕경수,김영생,김광재 全北大學校 敎育大學院 2003 敎育論叢 Vol.23 No.-
The purpose of this study was to investigate the effect of senseless syllable chunking used tune on activation of EMR children;s short term memory and their literacy. The research questions were as follows: 1. Is there any difference between ellaboration question and ellaboration explanation about the figures of 5 key consonents to upper/lower EMR children in acquisition of vowel 'ㅏ' syllables? 2. Are the tunes of song effective on chunking vowel 'ㅏ' syllables. 3. To upper/lower EMR children is the senseless syllables chunked effective on chunking other syllables without or with a final consonent like 'ㅇ, ㅁ, ㄴ, ㄹ, or ㅅ' or in each syllable ? Selected were five children who could not read Hangul at all from three grades of an elementary school located in the country of Jollabukdo. The major findings of this study were as follows: 1. There was a significant difference between elllaboration question and ellaberation explanation only for lower EMR children in acquisition of vowel 'ㅏ' syllables. 2. The tunes of song were effective on chunking 19 key syllables including 19 consonents and the vowel 'ㅏ' syllables. 3. To upper/lower EMR children the tunes of songs were effective on chunking 19 key syllables and 7 kinds of 95 syllable tables. In sum, especially only in the case of EMR children, decording letters is critically related to activation of short term memory and so STM-adapted teaching is critically important for them.
양동원,김범생,손영민,박정욱,정용안,손형선,김상윤 대한치매학회 2002 Dementia and Neurocognitive Disorders Vol.1 No.2
Background and Objectives . Alzheimer's disease (AD) is the most common cause of the dementia Pathologic and functional changes of AD are known to be unevenly distributed in the brain. This study investigates changes of cerebral blood flow (CBF) in patients with AD to determine brain regions with hypoperfusion that reflects progression of disease. Methods. Tc-99m-ECD single photon emission computed tomography (SPECT) was performed to measure regional CBF and statistical parametric mapping (SPM) 99 soft ware was used for the automated and objective approach to analyze SPECT image data. Twenty-five patients with mild to moderate dementia who met NINCDS-ADRDA critena for AD (male 11 female 14) and 17 age-matched normal control subjects were studied. The severity of AD was measured by clinical dementia rating (CDR) scale Results. SPM analysis of SPECT images revealed that CBF in the anterior cingulate gyrus left superior panetal cortex left medial frontal cortex left infenor temporal cortex. right thalamus and left hippocampus was significantly decreased in AD patients compared with normal controls (corrected p<0.05). The reduction of CBF according to CDR was localized in the left hippocampus and infenor temporal cortex right antenor and postenor ciagulate cortex and right superior panetal cortex (uncorrected p<0.01). Conclusions : Our data suggest that the cognitive dysfunction of AD is strongly related with functional abnormality in discrete brain areas 99m-Tc ECD SPECT with SPM analysis could be used as a useful functional imaging tool in AD study.
최창혁,장성호,성낙창,김수생,김영길 東亞大學校生命資源科學大學附設 農業資源硏究所 1994 農業生命資援硏究 Vol.3 No.1
The results of study focused on protein reuse of livestock wastewater sludge are as follows : 1. Generally increasing COD and BOD sludge loading, protein content was a tendency to increase. 2. The more SRT increase, the less protein content sludge was a tendency to decrease. 3. For the purpose of improving treatment efficiency of livestock wastewater and increasing protein products, it was profitable to treat more two-step aeration process than activated sludge process in treatment efficiency and volume.
Il-Sup Kim,Hyun-Young Kim,Young-Saeng Kim,Han-Gu Choi,Sung-Ho Kang,Ho-Sung Yoon 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
We investigated Arctic plants to determine if they have a specific mechanism enabling them to adapt to extreme environments because they are subject to such conditions throughout their life cycles. Among the cell defense systems of the Arctic mouse-ear chickweed Cerastium arcticum, we identified a stress-responsive dehydrin gene CaDHN that belongs to the SK5 subclass and contains conserved regions with 1 S-segment at the N-terminus and 5 K-segments from the N-terminus to the C-terminus. To investigate the molecular properties of CaDHN, yeast were transformed with CaDHN. CaDHN-expressing transgenic yeast (TG) cells recovered more rapidly from challenge with exogenous stimuli, including oxidants (hydrogen peroxide, menadione, and tert-butyl hydroperoxide), high salinity, freezing and thawing, and metal (Zn2+), than wild-type (WT) cells. TG cells were sensitive to copper, cobalt, and sodium dodecyl sulfate. In addition, the cell survival of TG cells was higher than that of WT cells when cells at the mid-log and stationary stages were exposed to increased ethanol concentrations. There was a significant difference in cultures that have an ethanol content >16%. During glucose-based batch fermentation at generally used (30℃) and low (18℃) temperatures, TG cells produced a higher alcohol concentration through improved cell survival. Specifically, the final alcohol concentrations were 13.3% and 13.2% in TG cells during fermentation at 30℃ and 18℃, respectively, whereas they were 10.2% and 9.4%, respectively, in WT cells under the same fermentation conditions. An in vitro assay revealed that purified CaDHN acted as a reactive oxygen species (ROS)-scavenger by neutralizing H2O2 and a chaperone by preventing high temperature-mediated catalase inactivation. Taken together, our results show that CaDHN expression in transgenic yeast confers tolerance to various abiotic stresses by improving redox homeostasis and enhances fermentation capacity, especially at low temperatures (18℃).