Resistance Development and Recovery of Susceptibility in Relation to Egg Size Change in the Diamondback Moth Treated with Fenvalerate

Xue Dong Chen,Fusao Nakasuii 한국응용곤충학회 2005 한국응용곤충학회 학술대회논문집 Vol.2005 No.05

Nonsurgical correction of a severe anterior deep overbite accompanied by a gummy smile and posterior scissor bite using a miniscrew-assisted straight-wire technique in an adult high-angle case

Xue-Dong Wang,Jie-Ni Zhang,Da-Wei Liu,Fei-fei Lei,Yan-Heng Zhou 대한치과교정학회 2016 대한치과교정학회지 Vol.46 No.4

In the present report, we describe the successful use of miniscrews to achieve vertical control in combination with the conventional sliding MBT<SUP>TM</SUP> straightwire technique for the treatment of a 26-year-old Chinese woman with a very high mandibular plane angle, deep overbite, retrognathic mandible with backward rotation, prognathic maxilla, and gummy smile. The patient exhibited skeletal Class II malocclusion. Orthodontic miniscrews were placed in the maxillary anterior and posterior segments to provide rigid anchorage and vertical control through intrusion of the incisors and molars. Intrusion and torque control of the maxillary incisors relieved the deep overbite and corrected the gummy smile, while intrusion of the maxillary molars aided in counterclockwise rotation of the mandibular plane, which consequently resulted in an improved facial profile. After 3.5 years of retention, we observed a stable, well-aligned dentition with ideal intercuspation and more harmonious facial contours. Thus, we were able to achieve a satisfactory occlusion, a significantly improved facial profile, and an attractive smile for this patient. The findings from this case suggest that nonsurgical correction using miniscrew anchorage is an effective approach for camouflage treatment of high-angle cases with skeletal Class II malocclusion.

Analysis the role of arabidopsis CKRC6/ASA1 in auxin and cytokinin biosynthesis

Dong-Wei Di,Lei Wu,Pan Luo,Li Zhang,Tian-Zi Zhang,Xue Sun,Shao-Dong Wei,Chen-Wei An,Guang-Qin Guo 한국식물학회 2016 Journal of Plant Biology Vol.59 No.2

The crosstalk between auxin and cytokinin (CK) is important for plant growth and development, although the underlying molecular mechanisms remain unclear. Here, we describe the isolation and characterization of a mutant of Arabidopsis Cytokinin-induced Root Curling 6 (CKRC6), an allele of ANTHRANILATE SYNTHASE ALPHA SUBUNIT 1 (ASA1) that encodes the á-subunit of AS in tryptophan (Trp) biosynthesis. The ckrc6 mutant exhibits root gravitropic defects and insensitivity to both CK and the ethylene precursor 1-aminocyclopropane-1-carboxylicacid (ACC) in primary root growth. These defects can be rescued by exogenous indole-3-acetic acid (IAA) or tryptophan (Trp) supplementation. Furthermore, our results suggest that the ckrc6 mutant has decreased IAA content, differential expression patterns of auxin biosynthesis genes and CK biosynthesis isopentenyl transferase (IPT) genes in comparison to wild type. Collectively, our study shows that auxin controls CK biosynthesis based on that CK sensitivity is altered in most auxin-resistant mutants and that CKs promote auxin biosynthesis but inhibit auxin transport and response. Our results also suggest that CKRC6/ASA1 may be located at an intersection of auxin, CK and ethylene metabolism and/or signaling.

Kinetics of a Cloned Special Ginsenosidase Hydrolyzing 3-O-Glucoside of Multi-Protopanaxadiol-Type Ginsenosides, Named Ginsenosidase Type 3

( Xue Feng Jin ),( Hong Shan Yu ),( Dong Ming Wang ),( Ting Qiang Liu ),( Chun Ying Liu ),( Dong Shan An ),( Wan Taek Im ),( Song Gun Kim ),( Feng Xie Jin ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.3

In this paper, the kinetics of a cloned special glucosidase, named ginsenosidase type III hydrolyzing 3-O-glucoside of multi-protopanaxadiol (PPD)-type ginsenosides, were investigated. The gene (bgpA) encoding this enzyme was cloned from a Terrabacter ginsenosidimutans strain and then expressed in E. coli cells. Ginsenosidase type III was able to hydrolyze 3-O-glucoside of multi-PPD-type ginsenosides. For instance, it was able to hydrolyze the 3- O-β-D-(1→2)-glucopyranosyl of Rb1 to gypenoside XVII, and then to further hydrolyze the 3-O-β-D-glucopyranosyl of gypenoside XVII to gypenoside LXXV. Similarly, the enzyme could hydrolyze the glucopyranosyls linked to the 3-O- position of Rb2, Rc, Rd, Rb3, and Rg3. With a larger enzyme reaction Km value, there was a slower enzyme reaction speed; and the larger the enzyme reaction Vmax value, the faster the enzyme reaction speed was. The Km values from small to large were 3.85 mM for Rc, 4.08 mM for Rb1, 8.85 mM for Rb3, 9.09 mM for Rb2, 9.70 mM for Rg3(S), 11.4 mM for Rd and 12.9 mM for F2; and Vmax value from large to small was 23.2 mM/h for Rc, 16.6 mM/h for Rb1, 14.6 mM/h for Rb3, 14.3 mM/h for Rb2, 1.81mM/h for Rg3(S), 1.40 mM/h for Rd, and 0.41 mM/h for F2. According to the Vmax and Km values of the ginsenosidase type III, the hydrolysis speed of these substrates by the enzyme was Rc>Rb1>Rb3>Rb2>Rg3(S)>Rd>F2 in order.

Efficient production of glutathione using hydrolyzate of banana peel as novel substrate

Xue-Dong Chen,Gong-Yuan Wei,Jun-Li Zhang,Ying-Ying Dong 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.7

The hydrolyzate of banana peels containing abundant fermentable sugars as glucose, xylose, mannose,and arabinose was successfully used as a novel substrate for the efficient production of glutathione by Candida utilis SZU 07-01. Xylose was first selected as the sole carbon source for glutathione production, medium optimization for better cell growth and higher glutathione using response surface methodology consisting of PB design, the steepest ascent experiment and CCD was carried out, and the optimal combination of nutrients was obtained as follows: xylose 20 g/L, (NH_4)-2SO_4 9.59 g/L, KH_2PO_4 3 g/L, L-methionine 5.72 g/L and MgSO_4 0.20 g/L. The maximum dry cell weight and glutathione achieved using the optimized medium were 7.36 g/L and 154.32 mg/L, respectively. Following with the content in this medium, other sugars like glucose, mannose and arabinose were chosen as the sole carbon source and all tested available for glutathione production. Based on these results, the hydrolyzate of banana peels was selected as a novel substrate, and a high DCW of 7.68 g/L and glutathione yield of 111.33 mg/L were obtained with the initial sugar concentration of 20 g/L in the hydrolyzate of banana peels.

SYNTHESIS OF MINIMUM AVERAGE ROUNDOFF NOISE REALIZATIONS OF PERIODICALLY TIME-VARYING STATE-SPACE DIGITAL FILTERS

Xue Dong Yang,Masayuki Kawamata,Tatsuo Higuchi 대한전자공학회 1992 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

Supervised-learning-based algorithm for color image compression

Liu, Xue-Dong,Wang, Meng-Yue,Sa, Ji-Ming Electronics and Telecommunications Research Instit 2020 ETRI Journal Vol.42 No.2

A correlation exists between luminance samples and chrominance samples of a color image. It is beneficial to exploit such interchannel redundancy for color image compression. We propose an algorithm that predicts chrominance components Cb and Cr from the luminance component Y. The prediction model is trained by supervised learning with Laplacian-regularized least squares to minimize the total prediction error. Kernel principal component analysis mapping, which reduces computational complexity, is implemented on the same point set at both the encoder and decoder to ensure that predictions are identical at both the ends without signaling extra location information. In addition, chrominance subsampling and entropy coding for model parameters are adopted to further reduce the bit rate. Finally, luminance information and model parameters are stored for image reconstruction. Experimental results show the performance superiority of the proposed algorithm over its predecessor and JPEG, and even over JPEG-XR. The compensation version with the chrominance difference of the proposed algorithm performs close to and even better than JPEG2000 in some cases.

경쟁적인 선발에서 경쟁적인 선거로? -향진선거에 대한 초보적인 분석

양설동 ( Xue Dong Yang ) 서강대학교 동아연구소 2003 東亞 硏究 Vol.- No.44

중국 스마트 홈 개발 방향에 관한 연구

동설(Dong Xue),조명은(Cho, Myung Eun),김미정(Kim, Mi Jeong) 한국실내디자인학회 2016 한국실내디자인학회 학술대회논문집 Vol.2016 No.10

As the information and communication technologies (ICT) has been advanced, smart homes have been introduced in the housing market. Residents become not satisfied with conventional housing functions, further demand more smart housing services for conveniences in their lifes. The initial adoption of smart homes were done in luxury houses or apartments in China emphasizing advanced technologies and devices, thus residents who live in affordable housings or apartments have no much opportunity for using such smart homes. Recently, the market of smart homes has been developed and extended, however, there is no agreed rule or protocol among related industries and architecture companies, which causes many problems in the market of smart homes. This research is to investigate such problems in the market with the history for the development of smart homes and identify residents" needs on smart homes using a questionnaire survey. Based one the result of the survey, persona scenarios will be developed according to residents" ages and a future direction for smart homes will be proposed.

정부보조금이 연구개발투자에 미치는 영향: 중국 신삼판 기업을 중심으로

장학동 ( Xue Dong Zhang ),강신애 ( Shin Ae Kang ) 한국국제경영학회 2013 國際經營硏究 Vol.34 No.3

본 논문은 정부보조금의 기업 연구개발투자에 대한 영향을 중국 신삼판 시장을 대상으로 분석하였다. 연구방법으로는 연구개발투자의 지속성을 고려하여 자기상관과 이분산성을 통제한 Newey-West 방법을 사용하였다. 연구기간은 2014년에서 2022년까지로 중국 신삼판 시장에 상장된 12월 결산 비금융업체 중 연구개발집약도가 중위값 이상인 5개 산업을 대상으로 분석하였다. 분석결과 첫째, 정부보조금은 연구개발집약도에 유의한 양(+)의 영향을 미쳤으며, 이러한 관계는 최대주주지분율의 대소, 국유기업 여부나 정치적 연계 유무에 관계없이 유의한 양(+)의 관계가 나타나 정부보조금이 초기 창업기업의 재무제약을 약화시키고 기술혁신활동에 정(+)의 영향을 미침을 확인하였다. 둘째, 정부보조금은 연구개발투자효율성에 유의한 음(-)의 영향을 미쳤으며, 최대주주지분율의 대소, 국유기업 유무나 정치적 연계 유무에 관계없이 유의한 음(-)의 관계가 나타났다. 연구개발 지출과 효율성이 연계되어 있어 중소벤처기업들의 거래소인 신삼판에서 정부보조금을 통해 연구개발 지출을 일정수준까지 증가시키는데 이용할 수 있다. 그러나 정부보조금을 받기 위해 기업은 정부의 요구에 맞는 첨단기술투자를 할 유인 등 기업의 연구개발투자에 따른 효율성이 크게 감소된다. 따라서 이러한 연구결과는 정부보조금이 연구개발투자 지출과 연구개발 자원의 유효 활용 정도인 연구개발투자효율성에 대한 영향이 다르므로 기업이 정부보조금을 통한 연구개발투자 지출 증가 뿐 아니라 효율성을 동시에 증가시킬 수 있는 방향으로 정부보조금이 지원되어야 함을 시사한다. This paper analyzed the impact of government subsidies on corporate R&D investment in the Chinese New Third Board market. The Newey-West method was used to control for autocorrelation and heteroscedasticity, considering the sustainability of R&D investment. The research period was from 2014 to 2022, and the analysis was conducted on five industries with R&D intensity above the median among non-financial companies with December settlement listed on the Chinese New Third Board. The analysis results showed that government subsidies had a significant positive impact on R&D intensity, regardless of the size of the largest shareholder’s stake, state ownership, or political connections. It was confirmed that government subsidies weaken financial constraints for start-up companies and have a positive impact on technological innovation activities. However, government subsidies had a significant negative impact on R&D investment efficiency, and this significant negative relationship was found regardless of the size of the largest shareholder’s stake, state ownership, or political connections. As R&D expenditure and efficiency are interrelated, government subsidies can be used to increase R&D expenditure to a certain level for small and medium-sized venture companies in the New Third Board market. However, to receive government subsidies, companies’ R&D investment efficiency decreases significantly due to incentives for advanced technology investment that meets government requirements. Therefore, these research results indicate that government subsidies should be supported in a direction that can increase not only R&D investment expenditure but also efficiency, as government subsidies have different effects on R&D investment efficiency, which is the degree of effective utilization of R&D investment expenditure and resources by companies.