• 대한물리의학회지
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• 제10권4호
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• pp.1-7
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• 2015

PURPOSE: The purpose of this study was to compare the effects of cross-body stretching (CBS) and modified cross-body stretching (MCBS) on the range of motion (ROM) of glenohumeral joint (GHJ) in healthy subjects. METHODS: Thirty subjects were randomly assigned to 1 of 2 groups: CBS group without stabilization of scapula (n=15) and MCBS group with stabilization of scapula (n=15). We measured horizontal adduction and internal rotation ROM of GHJ in pre- and post-intervention. The data were analyzed using the analyses of covariate (ANCOVA) and least significant difference (LSD) post hoc tests (p=.05). RESULTS: In the post-intervention, the MCBS group had a significantly greater increase in horizontal adduction ROM (mean ${\pm}$ SD, $11.46^{\circ}{\pm}0.83^{\circ}$) compared to the CBS group ($7.81^{\circ}{\pm}0.83^{\circ}$) (p=.007) and a greater increase in internal rotation ROM ($62.27^{\circ}{\pm}0.74^{\circ}$) compared to the CBS group ($59.20^{\circ}{\pm}0.74^{\circ}$) (p=.004). CONCLUSION: A single session application of an MCBS provides immediate more improvements in both horizontal adduction and internal rotation ROM than CBS. These results suggest that application of MCBS with stabilization of scapula may be a more useful to gain ROM of GHJ than CBS without stabilization of scapula.

• Journal of Microbiology and Biotechnology
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• 제25권11호
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• pp.1787-1795
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• 2015

The transition from primary to secondary metabolism in antibiotic-producing Streptomyces correlates with expression of genes involved in stress responses. Consequently, regulatory pathways that regulate specific stress responses are potential targets to manipulate to increase antibiotic titers. In this study, genes encoding key proteins involved in regulation of the osmotic stress response in Streptomyces avermitilis, the industrial producer of avermectins, are investigated as targets. Disruption of either osaB_Sa, encoding a response regulator protein, or osaC_Sa, encoding a multidomain regulator of the alternative sigma factor SigB, led to increased production of both oligomycin, by up to 200%, and avermectin, by up to 37%. The mutations also conditionally affected morphological development; under osmotic stress, the mutants were unable to erect an aerial mycelium. In addition, we demonstrate the delivery of DNA into a streptomycete using biolistics. The data reveal that information on stress regulatory responses can be integrated in rational strain improvement to improve yields of bioactive secondary metabolites.

• Steel and Composite Structures
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• 제21권1호
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• pp.177-194
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• 2016

The cable-supported ribbed beam composite slab structure (CBS) is a new type of pre-stressed hybrid structure. The standard construction method of CBS including five steps and two key phases are proposed in this paper. The theoretical analysis and experimental research on a 1:5 scaled model were carried out. First, the tensioning construction method based on deformation control was applied to pre-stress the cables. The research results indicate that the actual tensile force applied to the cable is slightly larger than the theoretical value, and the error is about 6.8%. Subsequently, three support dismantling schemes are discussed. Scheme one indicates that each span of CBS has certain level of mechanical independence such that the construction of a span is not significantly affected by the adjacent spans. It is shown that dismantling from the middle to the ends is an optimal support dismantling method. The experimental research also indicates that by using this method, the CBS behaves identically with the numerical analysis results during the construction and service.

• Bulletin of the Korean Chemical Society
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• 제31권2호
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• pp.331-334
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• 2010

In the present study, carbon supports mixed with purified multi-walled carbon nanotubes (MWNTs) and carbon blacks (CBs) were used to improve the cell performance of direct methanol fuel cells (DMFCs). Additionally, the effect of $O_2$ plasma treatment on CBs/MWNTs supports was investigated for different plasma RF powers of 100, 200, and 300 W. The surface and structural properties of the CBs/MWNTs supports were characterized by FT-IR, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and inductive coupled plasma-mass spectrometer (ICP-MS). The electrocatalytic activity of PtRu/CBs/MWNTs catalysts was investigated by cyclic voltammetry measurement. In the experimental results, the oxygen functional groups of the supports were increased with increasing plasma RF power, while the average Pt particle size was decreased owing to the improvement of dispersibility of the catalysts. The electrochemical activity of the catalysts for methanol oxidation was gradually improved by the larger available active surface area, itself due to the introduction of oxygen functional groups. Consequently, it was found that $O_2$ plasma treatments could influence the surface properties of the carbon supports, resulting in enhanced electrocatalytic activity of the catalysts for DMFCs.

• Journal of the korean society of oceanography
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• 제36권4호
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• pp.93-100
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• 2001

The concentrations of 20 congeners of PCBs were determined in surficial and dated sediments from Jinhae, Busan, Ulsan and Yeongil Bay of Korea to assess current distributions as well as historical trends. The concentration ranges of total CBs in sediments were nd-138.60 ng/g dry wt. The concentrations of total CBs were significantly different among bays in the southeastern coastal areas (Kruskal-Wallis Test, p=0.036), Showing the Order Of Busan>Ulsan>Yeongil>Jinhae Bay. Predominant PCB homologues were penta-, hexa- and hepta-CBs. The down-core distributions of PCBs showed that the highest concentrations occurred in the late 1960s, coinciding with the onset of industrialization of Korea. The compositions of PCB congeners in sediment among bays were uniform, suggesting that major sources were not changed over time.

• Bulletin of the Korean Chemical Society
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• 제32권11호
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• pp.3873-3879
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• 2011

The potential energy surface (PES) for the isomerizations and dissociations of the acrylonitrile radical cation was determined from the CBS-QB3 and CBS-APNO calculations. The Rice-Ramsperger-Kassel-Marcus model calculations were performed based on the PES in order to predict the competitions among the dissociation channels. The mechanisms for the loss of $H^{\bullet}$, $H_2$, $CN^{\bullet}$, HCN, and HNC were proposed. The $C_3H_2N^+$ ion formed by loss of $H^{\bullet}$ was predicted as a mixture of $CH{\equiv}C-C=NH^+$, $CH{\equiv}C-N{\equiv}CH^+$, and $CH_2=C-C{\equiv}N^+$. Furthermore $CH{\equiv}C-C{\equiv}N^{+{\bullet}}$ was formed mainly by a consecutive 1,2-H shift and 1,2-H2 elimination.

• 미생물학회지
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• 제35권4호
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• pp.302-306
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• 1999

정장용 효모로 알려져 있는 Saccharomyces cerevisiae Hansen CBS5926의 생균제 제조를 목적으로 생균수 증대를 위한 배양조건과 배양 후 얻은 균체의 효과적인 동결건조 보존법에 관하여 조사하였다. 포도당을 탄소원으로 하는 회분식과 유가식 배양에 비해 에탄올을 탄소원으로 하는 유가식 배양이 장점이 많은 것으로 나타났으며, 배양 72시간 후 2.2${\times}$10^9 cfu/ml의 생균수와 38g/l의 건조 균체량을 얻을 수 있었다. 에탄올을 탄소원으로 하는 유가식 배양으로부터 얻은 균체의 동결보존을 위한 보호제의 효능을 비교한 결과, 20% 백당(w/v)과 30% 유당(w/v)에서의 생존율이 16.3%로서 비교된 다른 종류의 동결보호제보다 효과적인 것으로 나타났다. 그러나, 백당, 유당 및 탈지분유의 혼합에 의한 동해방지 보호 효과를 비교한 결과 생존율이 12.4~16.5%로서 보호제의 혼합에 따른 생존율의 상승효과는 나타나지 않았다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2013년도 하계학술대회
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• pp.256-257
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• 2013

최근 동일본 대지진 또는 중국 쓰촨성 대지진 등 국가적인 재해 재난이 한반도 주변에서 자주 일어나고 있다. 대한민국도 마찬가지로 집중호우로 인한 인명피해가 발생되기도 했다. 이러한 경우 해당 재난지역 내의 주민들이 지역상황을 인지하고 대피하게 할 수 있다면, 인명피해를 크게 줄일 수 있을 것이다. 이러한 문제의 해결책으로 보급률이 뛰어나고 개인 휴대형 기기인 휴대전화기를 통한 재난방송 기능이 제안되었다. 여기에는 재난 방송의 특성상 지연시간과 수신율에 문제점이 있을 수 있다. 그러므로 방송 (broadcasting)개념이 도입되어 다수의 사용자가 한 번에 수신할 수 있도록 CBS (Cell Broadcasting Service) 서비스를 제공하고 있다. 하지만 이 또한 현실적으로 LTE (Long Term Evolution) 망에서만 가능하며 3세대 통신, WCDMA (Wideband Code Division Multiple Access) 에서는 대기전력 소모에 의한 배터리 소요로 제외되었다. 본 지에서는 CBS를 이용하여 WCDMA 단말을 소지한 사용자에게도 DMB를 통해 재난상황을 인지 할 수 있는 새로운 게이트웨이를 제안한다.

• 한국인터넷방송통신학회논문지
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• 제20권1호
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• pp.141-148
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• 2020

뇌혈관 손상으로 인해 발생하는 신경학적 질환인 뇌졸중과 관련이 있는 편측무시(Unilateral neglect)는 대뇌반구의 반대측 자극에 대하여 인지 또는 반응하지 못하는 증상으로, 주로 우측 대뇌반구 손상에서 나타난다. 본 논문에서는 편측무시에 대한 행동적 평가 척도로 사용되고 있는 한국형 캐서린 버지고 척도(Korean Catherine Bergego Scale)의 10가지 문항과 내용을 기반으로 가상현실(Virtual Reality)을 이용한 콘텐츠를 구현하였다. 구현된 콘텐츠는 편측무시 환자의 증상으로 나타나는 신체 무시, 운동성 무시, 시각 및 공간 무시, 청각 주의 등을 평가할 수 있으며, 시각적으로 인지하고 반응하는 동안의 시간과 머리 회전각을 측정함으로써 질환의 진행 정도를 정량적으로 확인하였다. 이 방법을 이용하여 편리한 편측무시 진단과 이를 응용한 콘텐츠를 활용하여 재활 훈련에 유용하게 사용될 수 있을 것으로 기대된다.

• 한국미생물·생명공학회지
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• 제21권6호
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• pp.582-587
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• 1993

The extracellular alpha-amylase was purified to homogenity from the culture filtrate of starch grown Sch. castellii CBS 2863. The purified enzyme was glycoprotein with a molecular weight of about 56 kDa. The pH and temperature optimum were 5.5 and 40C, respectively. The enzyme was fairly stable up to 40C and at acid pH range (pH 4.0-7.0). The apparent Km and Vmax of the enzyme toward starch was 1.0mg/ml and 100U/mg protein, respectively. The analysis of amino acid composition was found to be acidic protein. The amino acid sequence of N-terminal peptide consisted of Asp-Val-Ser-Ser-Ala-X-X-Thr-Arg-Ser-Glu-Ser-Ile-Tyr.