http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Studies on Decolorization Process for rhEGF as Cosmetic Ingredient
Zhi-nan Xu,Xiao-wei Zhao,Mao-hong Zhou,Pei-lin Cen 한국생물공학회 2005 Biotechnology and Bioprocess Engineering Vol.10 No.3
A decolorization process using ion exchange chromatography was developed to refine rhEGF as a cosmetic ingredient. A macroreticular resin (D314) was selected, with respect to its high decolorization rate and recovery yield of rhEGF, and the operational conditions of the decolorization process optimized. The optimum conditions were as follows: the rhEGF effluent was ion exchanged at a flow rate of 60.0 mL/h, with an effluent pH 5.0, using a chromatographic column (i.d. 16 mm) packed with D314, with a 7.5 cm in bed height. The decolorization process was carried out under the optimum conditions, and halted when the effluent volume reached 350 mL, giving a decolorization rate and recovery yield of rhEGF higher than 67 and 80%, respectively. When the decolorization rate exceeded 67%, the final product turned out to be white or light yellowish, which was to the satisfaction of the cosmetic standard.
Effect of Light with Different Wavelengths on Nostoc flagelliforme Cells in Liquid Culture
( Yu Jie Dai ),( Jing Li ),( Shu Mei Wei ),( Nan Chen ),( Yu Peng Xiao ),( Zhi Lei Tan ),( Shi Ru Jia ),( Nan Nan Yuan ),( Ning Tan ),( Yi Jie Song ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.4
The effects of lights with different wavelengths on the growth and the yield of extracellular polysaccharides of Nostoc flagelliforme cells were investigated in a liquid cultivation. N. flagelliforme cells were cultured for 16 days in 500 ml conical flasks containing BG11 culture medium under 27 μmol·m-2·s-1 of light intensity and 25oC on a rotary shaker (140 rpm). The chlorophyll a, phycocyanin, allophycocyanin, and phycoerythrin contents in N. flagelliforme cells under the lights of different wavelengths were also measured. It was found that the cell biomass and the yield of polysaccharide changed with different wavelengths of light. The biomass and the yield of extracellular polysaccharides under the red or violet light were higher than those under other light colors. Chlorophyll a, phycocyanin, and allophycocyanin are the main pigments in N. flagelliforme cells. The results showed that N. flagelliforme, like other cyanobacteria, has the ability of adjusting the contents and relative ratio of its pigments with the light quality. As a conclusion, N. flagelliforme cells favor red and violet lights and perform the complementary chromatic adaptation ability to acclimate to the changes of the light quality in the environment.
Zhi-Ning Huang,Han Liang,Hong Qiao,Bao-Rui Wang,Ning Qu,Hua Li,Run-Run Zhou,Li-Juan Wang,Shan-Hua Li,Fu-Nan Li 대한약학회 2018 Archives of Pharmacal Research Vol.41 No.12
Guided by bioisosterism and pharmacokinetic parameters, we designed and synthesized a series of novel benzamide derivatives. Preliminary in vitro studies indicated that compounds 10b and 10j show significant inhibitory bioactivity in HepG2 cells (IC50 values of 0.12 and 0.13 μM, respectively). Compounds 10b and 10j induced the expression of HIF-1α protein and downstream target gene p21, and upregulated the expression of cleaved caspase-3 to promote tumor cells apoptosis.
Sharing a Large Secret Image Using Meaningful Shadows Based on VQ and Inpainting
( Zhi-hui Wang ),( Kuo-nan Chen ),( Chin-chen Chang ),( Chuan Qin ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.12
This paper proposes a novel progressive secret image-hiding scheme based on the inpainting technique, the vector quantization technique (VQ) and the exploiting modification direction (EMD) technique. The proposed scheme first divides the secret image into non-overlapping blocks and categorizes the blocks into two groups: complex and smooth. The blocks in the complex group are compressed by VQ with PCA sorted codebook to obtain the VQ index table. Instead of embedding the original secret image, the proposed method progressively embeds the VQ index table into the cover images by using the EMD technique. After the receiver recovers the complex parts of the secret image by decoding the VQ index table from the shadow images, the smooth parts can be reconstructed by using the inpainting technique based on the content of the complex parts. The experimental results demonstrate that the proposed scheme not only has the advantage of progressive data hiding, which involves more shadow images joining to recover the secret image so as to produce a higher quality steganography image, but also can achieve high hiding capacity with acceptable recovered image quality.
Zhi-Fang Lin,Nan Liu,Gui-Zhu Lin,Chang-Lian Peng 한국식물학회 2009 Journal of Plant Biology Vol.52 No.4
Leaf discs of Alocasia macrorrhiza were treated with various stress factors, including two photo-oxidants, methyl viologen (MV) or riboflavin (RB); three pollutants, sodium bisulphite (NaHSO3), or the heavy metals lead or cadmium; or an osmotic medium, polyethylene glycol 6000. The in situ localisation sites for O2 − generation were identified using specific dye nitro blue tetrazolium as a probe. The level of superoxide production was determined by scanning the blue-stained formazan area and was defined as the percentage of pixels from the stained portion versus the total number of pixels in the entire leaf disc area. All stress factors induced the generation of O2 − in a time- or concentration-dependent pattern. Although superoxide production also was enhanced by longer time periods in untreated discs (control), the degree to which this occurred was less than that measured in leaves treated with either MV or RB. Generation sites were primarily found in the chloroplasts of stomatal guard cells and in the plasma membrane of the epidermis and mesophyll cells, indicating that they were most responsive to stress conditions. Nevertheless, the site of O2 − generation varied among these stress factors.
CLV1 Interacts with UFO in Modulation of Gynoecium Development in Arabidopsis thaliana
Zhi-Peng Cheng,Zhong-Nan Yang,Sen Zhang 한국식물학회 2013 Journal of Plant Biology Vol.56 No.1
The gynoecium is the female reproductive structurein flowering plants. It has been known that the CLAVATA1(CLV1) gene regulates the floral meristem maintenance andfloral organ number in Arabidopsis thaliana. However,whether CLV1 plays roles in gynoecium development remainsuncharacterized. In this study, we showed that CLV1genetically interacts with Unusual Floral Organs (UFO) toregulate the development of Arabidopsis gynoecium. Throughforward genetic screen, we identified a clv1 allele, clv1-9,showing abnormal gynoecium development. Some epidermalcells on the growing inner surfaces of the clv1-9 gynoeciumfailed to fuse after contacting with each other, suggesting thatCLV1 is essential for proper postgenital fusion. Furthermore,the ufo clv1-9 double mutant exhibited an expanded uppergynoecium, narrowed lower part of the ovary, alteredvascular patterning and abaxial outward proliferation of thetransmitting tract tissues. The transcription level of the ETTgene, which is required for gynoecium structure and patternformation, was down-regulated in the ufo clv1-9 doublemutant genoecia. Taken together, our results indicate thatCLV1 functions together with UFO to regulate gynoeciumdevelopment likely through modulating the expression ofETT.
Zhi-ting Zhou,Zhen-nan Fan,Jian-fu Li,Kun Wen,Bide Zhang,Tao Wang,Yan-kun Xia,Zhang Sun,Bing Yao 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.6
A field-circuit coupling model of a typical faulty generator is established to correct through-bolt end-region overheating and breakdown failure in a tubular hydro-generator. Using the model, eddy current loss and electromagnetic forces on through bolts under normal and failure conditions are analyzed and compared and the natural frequency of a through bolt is determined. Based on the analysis results, the causative mechanism of failure is revealed and targeted improvement design measures are proposed. The numerical results are found to be consistent with the actual fault characteristics, validating the design measure improvements. The results are useful in improving the design and manufacturing standards and enhancing the operational reliability of large tubular hydrogenerators.