Characterization of a novel variant HMW‐glutenin gene from Elymus canadensis

Qian‐Tao Jiang,Yu‐Ming Wei,Tao Liu,Ji‐Rui Wang,Zhi‐En Pu,Xiu‐Jin Lan,You‐Liang Zheng,Zhen‐Xiang Lu 한국유전학회 2010 Genes & Genomics Vol.32 No.4

High molecular weight (HMW) glutenin subunits (GS) play a key role in the determination of end‐use quality of wheat and other cereal crops. In this study, we report the isolation and characterization of both promoter region and ORF of novel HMW‐GS allele 1St1.3 from a perennial Triticeae species,Elymus canadensis. The amino acid (AA) sequences of E. canadensis 1St1.3 were deduced as 434 aa. Its protein primary structure comprises a signal peptide with a conserved N‐terminal domain, a central repetitive domain and a C‐terminal domain. E. canadensis 1St 1.3 possesses several distinct characteristics which are different from those of wheat HMW‐GSs. The N‐terminal domains of E. canadensis 1St 1.3 resemble that of y‐type subunits, while their C‐terminal domains are more similar to x‐type subunits. The deletion of 85 bp fragment has been observed in promoter region of 1St 1.3, however which has not interrupted the expression of this gene. Our results indicate that 1St 1.3 is novel HMW‐GS variants which will be valuable for enhancing our understanding of structural differentiation and the evolutionary relationship among HMW‐GSs in Triticeae species.

Study on the combustion process and work capacity of a micro free-piston engine

Qian Wang,Liming Dai,Kai Wu,Jin Bai,Zhixia He 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.11

With the main idea of exploring combustion conditions and the work capacity of the micro free-piston engine, the study concern isvisualization work including Homogeneous charge compression ignition (HCCI) combustion in the micro-chamber. The initial freepistonvelocity was adjusted to achieve a wide range of compression ratio. The combustion characteristics, the piston motion and pressurevariations under different compression ratios were discussed. Results indicate that the critical combustion condition occurs when thecompression ratio rises to a certain degree. Two-stage combustion characteristics can be observed in micro HCCI combustion processeswith the fuel of the DME/oxygen mixture. The micro-chamber pressure increases with the increase of the compression ratio. The criticalpeak pressure of 5.4 MPa is obtained when the initial piston velocity reaches 15.0 m/s and the diameter and the length of the microchamberis 3 mm and 37 mm, respectively.

Characterization and synthesis of Ce-incorporated mesoporous molecular sieves under microwave irradiation condition

Qian Zhao,Qian Wang,Yajing Tang,Tingshun Jiang,Chang-sheng Li,Hengbo Yin 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.4

Ce-incorporated MCM-41 mesoporous molecular sieves (CeMCM-41) were synthesized by microwave irradiation method from sodium silicate and ammonium cerium (IV) nitrate precursors and using cetyltrimethyl ammonium bromide (CTAB) as template. The resulting samples were characterized by means of XRD, TEM, FT-IR, UV-Vis,XPS and N2 physical adsorption, respectively. The effect of the Si/Ce molar ratio on the textural properties of CeMCM-41 was investigated. The results reveal that the CeMCM-41 was successfully synthesized. The resultant mesoporous materials have specific surface areas in the range of 602-1,216 m2/g and pore sizes in the range of ca. 2.6-2.9 nm. The structural properties are related to the amount of cerium incorporation. The surface area and pore volume of the resulting CeMCM-41 were gradually reduced as the cerium content in the sample increased, and the mesoporous ordering diminished.

Tight Bounds and Invertible Average Error Probability Expressions over Composite Fading Channels

Qian Wang,Hai Lin,Pooi-Yuen Kam 한국통신학회 2016 Journal of communications and networks Vol.18 No.2

The focus in this paper is on obtaining tight, simplealgebraic-form bounds and invertible expressions for the averagesymbol error probability (ASEP) of M-ary phase shift keying(MPSK) in a class of composite fading channels. We employ themixture gamma (MG) distribution to approximate the signal-tonoiseratio (SNR) distributions of fading models, which includeNakagami-m, Generalized-K (KG), and Nakagami-lognormalfading as specific examples. Our approach involves using the tightupper and lower bounds that we recently derived on the GaussianQ-function, which can easily be averaged over the general MG distribution. First, algebraic-form upper bounds are derived on theASEP of MPSK for M > 2, based on the union upper boundon the symbol error probability (SEP) of MPSK in additive whiteGaussian noise (AWGN) given by a single Gaussian Q-function. Bycomparison with the exact ASEP results obtained by numerical integration,we show that these upper bounds are extremely tight forall SNR values of practical interest. These bounds can be employedas accurate approximations that are invertible for high SNR. Forthe special case of binary phase shift keying (BPSK) (M = 2),where the exact SEP in the AWGN channel is given as one GaussianQ-function, upper and lower bounds on the exact ASEP areobtained. The bounds can be made arbitrarily tight by adjustingthe parameters in our Gaussian bounds. The average of the upperand lower bounds gives a very accurate approximation of the exactASEP. Moreover, the arbitrarily accurate approximations forall three of the fading models we consider become invertible forreasonably high SNR.

Soybean GmAOC3 promotes plant resistance to the common cutworm by increasing the expression of genes involved in resistance and volatile substance emission in transgenic tobaccos

Qian Wu,Hui Wang,Juanjuan Wu,Dagang Wang,Yongli Wang,Lei Zhang,Zhiping Huang,Deyue Yu 한국식물학회 2015 Journal of Plant Biology Vol.58 No.4

The evaluation and use of endogenous soybean genes is an effective strategy to minimize the yield losses caused by insects. Allene oxide cyclase (AOC) catalyzes the most important step in the biosynthesis of jasmonate (JA), which plays a crucial role in plant defense against insects. In this study, the role of GmAOC3 in plant insect resistance was evaluated. Real-time PCR results indicate that GmAOC3 was uniquely and rapidly activated and attained peak expression in leaves after attack by the common cutworm (CCW). In insect bioassays, transgenic lines overexpressing GmAOC3 were significantly less damaged than wild-type plants, and the relative growth rate of CCW fed with leaves from transgenic lines was significantly lower than that of CCW fed with leaves from wild-type plants. Electron microscopy revealed that the density of leaf trichomes in transgenic lines overexpressing GmAOC3 was greater than that in wild-type tobacco. Several physiological and morphological indicators, including JA, phenolic content and the relative expression levels of the putrescine N-methyltransferase (PMT) and proteinase inhibitor (PI) genes, phenylalanine ammonia lyase (PAL) activity and volatile substances, increased in the transgenic plants overexpressing GmAOC3. Our findings indicate that GmAOC3 plays an important role in soybean resistance to CCW and can be used as a resource for plant breeding.

Development of Functional Soymilk Fermented by Bacillus Subtilis and Spry Drying Product with Neuroprotective Effect

Qian Wang,Ji Myung Choi,Ji Hyun Kim,Eun Ju Cho 한국식품영양과학회 2012 한국식품영양과학회 학술대회발표집 Vol.2012 No.10

Dyeability of Perilla Frutescens Extract

( Qian Wen Wang ),( Jung Soon Lee ) 한국감성과학회 2015 추계학술대회 Vol.2015 No.-

Perilla Frutescens, its scientific name being Perilla Frutescens L., is a leaf of a yearly-herbaceous-Lamiaceae plant called Beefsteak plant, and its shape is similar to the wild sesame leaf. The function of Perilla Frutescens includes removal of fever, perspiration, strengthening stomach, and detoxification, and by the recent study, it also shows it has anti-allergic, anticancer, anti-microbial properties. In this study, Perilla Frutescens was soaked and heated with distilled water, by the ratio of 1 to 10(water being the 10) to extract its pigment, and the extract was concentrated by vacuum evaporation. To evaluate the dyeing property of this Perilla Frutescens extract toward silk fabric, the fabrics were dyed in various conditions; varying concentration, temperature, and time of dyeing procedure. Thus, by this, this study aims to find the optimal condition of dyeing. To have the evaluation done in accuracy, K/S, color difference, color fastness, and antibiotic property of dyed fabrics were also checked. This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(2014R1A1A3A04049595)

Almost Sure Stability of Dual Switching Continuous-time Nonlinear System With Deterministic and Stochastic Subsystems

Qian-qian Mu,Fei Long,Qi-xiang Wang,Lang Zhang,Li-po Mo 제어·로봇·시스템학회 2024 International Journal of Control, Automation, and Vol.22 No.1

In this paper, the almost surely globally asymptotical stability and the almost surely exponential stability for dual switching continuous-time nonlinear system are investigated by using the probability analysis method and stochastic Multi-Lyapunov function, respectively. Different from the previous research results, it is the first time that dual switching continuous-time nonlinear system is used as a study object to investigate its switching stability. Then, the probability analysis method is used to overcome the deficiency that the ergodicity no longer holds due to the variable transition rate of Markov process. Some sufficient conditions for the globally asymptomatic stability almost surely and the almost surely exponential stability of dual switching continuous-time nonlinear system are given under the pre-designed deterministic switching strategy. Finally, two numerical examples are provided to verify the effectiveness of the proposed approach.

Constraining the Uncertainties Measuring in Urban Stormwater Pollution: using Optimal Monitoring Program

Qian Wang,Qiong-hua Zhang,Xiao-chang Wang 대한환경공학회 2015 대한환경공학회 학술발표논문집 Vol.2015 No.10

Research on Partial Discharge Pattern Recognition in GIS Based on EFPI Sensor

Wang Zan,Liu Zhongquan,Qiao Lili,Qian Dingdong,Chen Zhongxian,Gao Chaofei,Wang Wei 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.1

An EFPI fber optic ultrasonic sensor can be used for the detection and pattern recognition of partial discharge ultrasonic signals in Gas Insulated Switchgear. Compared with traditional piezoelectric sensors, it has many advantages, such as high sensitivity and strong anti-interference ability. Based on this, four typical PD models of the tip, metal particles, suspension and creeping surface were set up in the GIS cavity flled with 0.4 MPa SF6 gas, and the EFPI sensor was innovatively used to detect the discharge ultrasonic signal and extract the single ultrasonic pulse signal. The waveform features form a feature parameter database, and the probabilistic neural network algorithm and the support vector machine algorithm are used for pattern recognition and comparative analysis, respectively. The ultrasonic signal detected by the EFPI sensor has prominent features. On the basis of extracting the feature parameters, the two pattern recognition algorithms can achieve an average recognition rate of more than 85%, and the recognition efect of the support vector machine is better than that of the probabilistic neural network