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Search Results: 1 - 10 of 22964 matches for " Jing Zhuang "
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Four new species and a new Chinese record of the nectrioid fungi
Jing Luo,WenYing Zhuang
Science China Life Sciences , 2010, DOI: 10.1007/s11427-010-4031-3
Abstract: Four new species belonging to Bionectria, Calonectria, Haematonectria and Neonectria on plant substrates collected from nature reserves in southern and central China are described. Bionectria truncata has smooth perithecia of a flattened to shallow discoid apex, clavate asci with an apical ring, and ellipsoid, smooth to spinulose ascospores. Calonectria dicephalospora is characterized by pyriform perithecia with a warted surface, clavate asci with a simple apex and long, narrow stalk, and fusoid ascospores with a cap-like appendage at each end. Haematonectria lushanensis possesses warted perithecia which are laterally collapsing when dry, cylindrical asci with a simple apex, and ellipsoid, spinulose ascospores. Neonectria dinghushanica is distinguishable by subglobose perithecia with a warted surface, clavate asci, and striate ascospores. Morphological features of these new species are described comprehensively and compared with their related fungi. Neonectria castaneicola is recorded as new to China.
A New Digital Image Encryption Algorithm Based on Improved Logistic Mapping and Josephus Circle  [PDF]
Zhiben Zhuang, Jing Wang, Jingyi Liu, Dingding Yang, Shiqiang Chen
Journal of Computer and Communications (JCC) , 2018, DOI: 10.4236/jcc.2018.66003
Abstract: Digital image encryption based on Joseph circle and Chaotic system has become a hot spot in the research of image encryption. An encryption algorithm based on improved Josephus loop and logistic mapping is proposed to scrambling blocks in this paper. At first, the original image is scrambled by using logistic mapping to obtain the encrypted image, and then the encrypted image is divided into many blocks. Finally, the position of the blocked image is scrambled by using the improved Josephus ring to get the encrypted image. According to the experiments, the information entropy of the encrypted image reaches 7.99 and the adjacent correlations in three directions are within ±0.1. The experimental results show that the proposed algorithm has advantages of large key space, high key sensitivity and can effectively resist the attacks of statistical analysis and gray value analysis. It has good encryption effect on digital image encryption.
Feasibility of Extreme Ultraviolet Active Optical Clock

ZHUANG Wei,CHEN Jing-Biao,

中国物理快报 , 2011,
Abstract:
Growth Characteristic of the Oleaginous Mi-croalga Chlorella ellipsoidea SD-0701 with Lipid Accumulation  [PDF]
Wenyu Luo, Wenya Du, Yi Su, Jiejie Hui, Jing Zhuang, Lili Liu
Natural Resources (NR) , 2015, DOI: 10.4236/nr.2015.62012
Abstract: Microalgae have great advantages as a new biomass source for fuel production. But microalgae are photosynthetic microorganisms, which normally grow in the light. Because of this growth condition, the commercial viability of microalgal biofuel is limited by current production systems. To obtain microalgal biofuel, fermentation is a more convenient, more economical and practical industry model. In this study, we asked whether and why the dark fermentation of C. ellipsoidea SD-0701 could be achieved by changing the culture medium formula. We focused the research on carbon-containing compounds and the initial pH of media. The results indicated that glucose was the optimum carbon-containing compound, which provided C. ellipsoidea SD-0701 with energy and carbon skeleton for accumulating organic compounds including lipids. When C. ellipsoidea SD-0701 was cultivated in the add-nutrition medium containing glucose, the optimum initial pH for the growth of C. ellipsoidea SD-0701 was pH 7.71. Therefore, if the suitable medium is used, C. ellipsoidea SD-0701 can grow normally in the dark, which is the same condition as the fermenter, and high microalgal biomass (0.50 g·L-1) and lipid yield (232.90 mg·L-1) can be achieved.
Aqua[2-(5-ethyl-2-pyridyl-κN)-4-isopropyl-4-methyl-5-oxo-4,5-dihydroxyimidazol-1-ido-κN1](5-methyl-1H-pyrazole-3-carboxylato-κ2N2,O)copper(II) 1.33-hydrate
Ji-Chang Zhuang,Fei-Long Hu,Zhong-Jing Huang,Yue Zhuang
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536809053768
Abstract: In the title complex, [Cu(C5H5N2O2)(C14H18N3O)(H2O)]·1.33H2O, the CuII ion is coordinated in a slightly distorted square-pyramidal environment. The basal plane is formed by two N atoms from a 2-(5-ethyl-2-pyridyl-κN)-4-isopropyl-4-methyl-5-oxo-4,5-dihydroxyimidazol-1-ide ligand and by one O atom and one N atom from a 5-methyl-1H-pyrazole-3-carboxylate ligand. The apical position is occupied by a water molecule. In the crystal structure, O—H...O, O—H...N and N—H...O hydrogen bonds lead to a three-dimensional supramolecular network.
Selection of a DNA barcode for Nectriaceae from fungal whole-genomes
ZhaoQing Zeng,Peng Zhao,Jing Luo,WenYing Zhuang,ZhiHe Yu
Science China Life Sciences , 2012, DOI: 10.1007/s11427-012-4266-2
Abstract: A DNA barcode is a short segment of sequence that is able to distinguish species. A barcode must ideally contain enough variation to distinguish every individual species and be easily obtained. Fungi of Nectriaceae are economically important and show high species diversity. To establish a standard DNA barcode for this group of fungi, the genomes of Neurospora crassa and 30 other filamentous fungi were compared. The expect value was treated as a criterion to recognize homologous sequences. Four candidate markers, Hsp90, AAC, CDC48, and EF3, were tested for their feasibility as barcodes in the identification of 34 well-established species belonging to 13 genera of Nectriaceae. Two hundred and fifteen sequences were analyzed. Intra- and inter-specific variations and the success rate of PCR amplification and sequencing were considered as important criteria for estimation of the candidate markers. Ultimately, the partial EF3 gene met the requirements for a good DNA barcode: No overlap was found between the intra- and inter-specific pairwise distances. The smallest inter-specific distance of EF3 gene was 3.19%, while the largest intra-specific distance was 1.79%. In addition, there was a high success rate in PCR and sequencing for this gene (96.3%). CDC48 showed sufficiently high sequence variation among species, but the PCR and sequencing success rate was 84% using a single pair of primers. Although the Hsp90 and AAC genes had higher PCR and sequencing success rates (96.3% and 97.5%, respectively), overlapping occurred between the intra- and inter-specific variations, which could lead to misidentification. Therefore, we propose the EF3 gene as a possible DNA barcode for the nectriaceous fungi.
Erratum to: DNA barcoding of the fungal genus Neonectria and the discovery of two new species
Peng Zhao,Jing Luo,WenYing Zhuang,XingZhong Liu,Bing Wu
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4217-3
Abstract:
DNA barcoding of the fungal genus Neonectria and the discovery of two new species
Peng Zhao,Jing Luo,WenYing Zhuang,XingZhong Liu,Bing Wu
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4184-8
Abstract: To determine a suitable DNA barcode for the genus Neonectria, the internal transcribed spacer rDNA, β-tubulin, EF-1α, and RPB2 genes were selected as candidate markers. A total of 205 sequences from 19 species of the genus were analyzed. Intra- and inter-specific divergences and the ease of nucleotide sequence acquisition were treated as criteria to evaluate the feasibility of a DNA barcode. Our results indicated that any single gene among the candidate markers failed to serve as a successful barcode, while the combination of the partial EF-1α, and RPB2 genes recognized all species tested. We tentatively propose the combined partial EF-1α and RPB2 genes as a DNA barcode for the genus. During this study, two cryptic species were discovered, based on the combined data of morphology and DNA barcode information. We described and named these two new species N. ditissimopsis and N. microconidia.
PREPARATION OF XYLOSE AND KRAFT PULP FROM POPLAR BASED ON FORMIC/ACETIC ACID /WATER SYSTEM HYDROLYSIS
Junping Zhuang,Lu Lin,Jing Liu,Xiaolin Luo
BioResources , 2009,
Abstract: A formic/acetic acid/water system was used in the ratios of 30:60:10, 20:60:20, and 30:50:20 separately for efficient hydrolysis and bioconversion of poplar chips, under the solid/liquid ratio of 1:12(g/ml), at 105 oC for 30, 45, 60, 75, and 90 min, respectively. The highest yield of 69.89% was at a formic/acetic acid /water ratio of 30:50:20(v/v/v), with solid/liquid in the ratio of 1:12(g/ml) at 105 oC for 90min. Lower kappa number and similar yield were achieved when hydrolytic residual woodchips were used for kraft pulping with over 2% Na2O and temperature 5 °C lower compared to untreated chips. Pulps from prehydrolysis-treated chips were easy to beat. But the tensile index, tear index, and burst index of the handsheets obtained from pulp with lowest kappa number from prehydrolysis-treated poplar chips were lower than those of the pulp from the untreated chips. Considerable xylose could be obtained from the prehydrolysis stage following kraft pulping under the same conditions for prehydrolysis-treated chips and untreated chips. However, by building on the mature kraft pulping and xylitol processes, large amounts of xylose from the hemicellulose were obtained in prehydrolysis, allowing production of high-valued products via biorefinery pathways. An economical balance of chemical dosage, energy consumption, pulp properties, and xylose value for prehydrolysis with organic acid should be reached with further investigation.
Absorption properties of radar absorbing structure laminate composites filled with Carbon Nanotubes
Zhengquan Zhang,Tiehu Li,Deqi Jing,Qiang Zhuang
Carbon : Science and Technology , 2009,
Abstract: Radar absorbing structure laminate composites composed of glass fibers, carbon fibers and epoxy resin filled with carbon nanotubes were fabricated. Two optimal double-layer radar absorbing structures were obtained, the smallest reflection loss of them was -19.23 dB and -26.60 dB respectively, and the absorbing bandwidth was 4.2 GHz and 4.0 GHz separately. It was possible to achieve out the reflection loss was smaller than -10 dB in whole 8.2 - 12.4 GHz by adopting double-layered radar absorbing structure, adjusting to the permittivity of the composites and controlling the thickness of each layer materials.
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