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Search Results: 1 - 10 of 36863 matches for " Mingsong Zhao "
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Evolution and significance of soil magnetism of basalt-derived chronosequence soils in tropical southern China  [PDF]
Decheng Li, Yanfang Yang, Jinping Guo, Bruce Velde, Ganlin Zhang, Feng Hu, Mingsong Zhao
Agricultural Sciences (AS) , 2011, DOI: 10.4236/as.2011.24070
Abstract: Soil samples were collected from eight basalt- derived chronosequence soils with the ages of 0.01, 0.58, 0.92, 1.33, 2.04, 3.04, 3.76 and 6.12 Ma respectively from Leizhou Peninsula and northern Hainan Island of tropical southern China. Magnetic parameters of magnetic susceptibility (MS), percentage of frequency-dependent magnetic susceptibility (FDS%), anhysteretic remanent magnetization (ARM), saturation isothermal remanent magnetization (SIRM), soft and hard isothermal remanent magnetization (IRMs and IRMh) of the collected samples were measured to study the evolution and the significance of the magnetism with soil age. The results show that the magnetic parameters changed fast from Primosols to Ferrosols (0.01 ~ 0.92 Ma) but slowly at Ferralosols stage (1.33 Ma~), it suggests a stable phase occurred for soil magnetism at Ferralosols, the existence of this phase could be supported by the little changes in the contents of clay, Fet and Fed. Obvious differences existed in the values of magnetic parameters between Ferralosols and other soil types (Primosols and Ferrosols), FDS%: Ferralosols > 10%, Primosols and Ferrosols < 10%; ARM, Ferralosols < 7000 × 10–8· SIm3·kg–1, Primosols and Ferrosols > 8000 × 10–8 SIm3·kg–1, thus, it is possible to differentiate Ferralosols from other soil types in tropical region by using magnetic indices.
Change of Tillage Layer Thickness of Farmland in Anhui Province of Eastern China  [PDF]
Yuxin Ma, Decheng Li, Ganlin Zhang, Xusheng Li, Yuguo Zhao, Jinling Yang, Feng Liu, Mingsong Zhao, Shanquan Li, Changlong Wei, Fan Yang, Laiming Huang
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.55041
Abstract:

Tillage layer thickness (TLT) of farmland could be regarded as one of physical indexes in assessing soil productivity and quality. In recent years, tillage layer shallowing was found in China in various regions, mainly due to the adoption of non-tillage or rotary tillage practices, but only little rough and non-quantitative information is available so far on the issue. This research took Anhui, a typical agricultural province in Eastern China as an example and compared the TLTs of 87 typical profiles on provincial scale and 210 on county scale from 1980s to 2010s. The results showed that TLTs of 3.7% and 17.2% of samples in 1980s and 2010s respectively were larger than 20 cm. From 1980s to 2010s the mean TLT increased from 16.3 to 17.4 cm on the provincial scale and from 15.0 to 15.5 cm on the county scale respectively. In the middle and southern regions the mean TLTs increased by 0.4-0.7 cm on the provincial scale and 0.3-3.2 cm on the county scale respectively, but decreased by 2.0 cm in northern region on the county scale. The mean TLT increased by 0.8 cm for paddy-field and 1.4 cm for dry-land on the provincial scale. TLT was influenced comprehensively by the factors of soil texture, the depth of rotary tillage and the farming positivity of the farmers. Generally, TLT of farmland with coarse soil texture was higher than that of farmland with fine soil texture, in 1980s TLT in region of poor-economic condition usually was deeper than in region of good-economic condition, and the adoption of rotary tillage led widely TLTs of farmlands to about 15 cm in 2010s.

Real-Time Video Transmission of Visible Light Communication Based on LED  [PDF]
Mingsong Chen, Jie Guo, Xiao Xu, Minglan Liang
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2017, DOI: 10.4236/ijcns.2017.108B007
Abstract:
In order to realize the video image transmission and the excellent lighting function of the visible light communication system, a LED-based visible light communication method and system is proposed. Based on the field programmable gate array (FPGA) hardware, the RS channel coding is applied to the visible light communication system. A pulse position decision algorithm is proposed, which is applied to the receiver of the visible light communication system to meet the error-free decision of the signal. The design of the system is based on the analog-to-digital conversion circuit, which provides a large signal dynamic range for the pulse position decision algorithm, and designs the LED driver based on the bias circuit to realize the fast broadband modulation of the signal. The test results show that the combined application of pulse position decision algorithm and Reed-Solomon codec can reduce the error of system signal and meet the real-time and reliable transmission of signal. The system can display the received video in real time from the receiver, and the whole system communication distance up to 5 m.
The separation and simultaneous determination of V(IV) and V(V) species complexed with EDTA by IC-ICP-OES
PP Coetzee, JL Fischer, Mingsong Hu
Water SA , 2002,
Abstract: A method for the separation of V(IV) and V(V) in the form of the EDTA complexes using anion chromatography with a Dionex AG5 anion exchange guard column, and the simultaneous determination of V(IV) and V(V) by inductively coupled plasma optical emission spectrometery is described. The interference from other elements is negligible. The detection limits of V(IV) and V(V) were 0.02 mg/l and 0.05 mg/l, respectively, using a glass nebuliser and 2 ?g/l for both species by using an ultrasonic nebuliser. The linear range was two orders of magnitude. The method was applied to the analysis of spiked water and industrial samples containing V in different oxidation states. WaterSA Vol.28(1) 2002: 37-44
Buspirone Ameliorates the Morphine Withdrawal-Induced Anxiety through Synaptic Ultrastructural Changes in Hippocampus of Rat  [PDF]
Jialin Gao, Gang Qian, Suyuan Luo, Yan Tian, Mingsong Wu, Zhongxiang Yao
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.410A003
Abstract:

Morphine administration causes long-lasting neural changes in the brain that underpin the behavioral abnormalities, and the relationship between structural changes and behavioral symptoms is obscure. In present study, the elevated plus-maze and transmission electron microscope were applied to validate the anxiety-like behaviors and synaptic ultrastructural changes in the hippocampi of rats among the morphine group (morphine administration only), the buspirone group (morphine plus buspirone administration) and the vehicle (saline treated only). As compared with the vehicle group, lower values of OE (times of entering into the open arms), OE% (percentage of entries into the open arms), OT (time spent in the open arms), OT% (percentage of time stayed in the open arms), Ns (surface density (Sv)/numerical density (Nv)) and S (surface area) of synapses were observed in the morphine group , but significantly, behavior higher scores of RR (rearing), HD (head-dipping), FBA (flat back approach), and higher Nv, Sv, PSD (postsynaptic density), LPT (length of postsynaptic thickening), WCJ (widths in synaptic cleft on junctions) and CCR (curvature of the cleft region) of synapses appeared in the morphine group. However, no significant differences in values of most of those parameters above were detected between the vehicle group and the buspirone group. These results supported that anxiety-like symptoms of rats significantly occurred to the rats after acute morphine withdrawal, but buspirone administration could reverse these indexes. It also proved that the appearance/disappearance of anxiety-related symptoms was related to the ultrastructural changes/reversibility of synapses in the hippocampus with morphine and buspirone administrations. So, it suggested that anxiety-related symptoms were modified in rats subjected to the synaptic ultrastructural changes in hippocampus by morphine acute withdrawal and were further rehabilitated by buspirone administration. It is helpful to pursue the effective therapeutic methods of morphine addiction.

Research on Security Assessment Index System for Operating Reserve in Large Interconnected Power Grid  [PDF]
Mingsong Liu, Huadong Sun, Jian He, Hengxu Zhang, Jun Yi, Jian Zhang
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B151
Abstract:

Optimization and placement of spinning reserve is an important issue in power system planning and operation. Systematic way for security assessment of operating reserve needs to study. A security assessment index system for operating reserve in large interconnected power grids is presented in this paper. Firstly, classification and determination methods of operating reserve at home and abroad are investigated, and operating reserve is divided into transient state operating reserve and quasi-steady state operating reserve from the view of security assessment. Secondly, assessment indexes and optimization methods for transient state operating reserve are studied. Thirdly, optimization model, deterministic and probabilistic optimization methods for quasi-steady state operating reserve are explored. Finally, some principles for determination of operating reserve are suggested, and a security assessment index system is put forward. The proposed index system, considering both transient and quasi-steady state, both deterministic and probabilistic methods, provides a systematic way to assessment and arrangement of operating reserve.

Combination of meta-analysis and graph clustering to identify prognostic markers of ESCC
Gao, Hongyun;Wang, Lishan;Cui, Shitao;Wang, Mingsong;
Genetics and Molecular Biology , 2012, DOI: 10.1590/S1415-47572012000300021
Abstract: esophageal squamous cell carcinoma (escc) is one of the most malignant gastrointestinal cancers and occurs at a high frequency rate in china and other asian countries. recently, several molecular markers were identified for predicting escc. notwithstanding, additional prognostic markers, with a clear understanding of their underlying roles, are still required. through bioinformatics, a graph-clustering method by dpclus was used to detect co-expressed modules. the aim was to identify a set of discriminating genes that could be used for predicting escc through graph-clustering and go-term analysis. the results showed that cxcl12, cyp2c9, tgm3, mal, s100a9, emp-1 and sprr3 were highly associated with escc development. in our study, all their predicted roles were in line with previous reports, whereby the assumption that a combination of meta-analysis, graph-clustering and go-term analysis is effective for both identifying differentially expressed genes, and reflecting on their functions in escc.
Suppression subtractive hybridization identified differentially expressed genes in lung adenocarcinoma: ERGIC3 as a novel lung cancer-related gene
Wu Mingsong,Tu Tao,Huang Yunchao,Cao Yi
BMC Cancer , 2013, DOI: 10.1186/1471-2407-13-44
Abstract: Background To understand the carcinogenesis caused by accumulated genetic and epigenetic alterations and seek novel biomarkers for various cancers, studying differentially expressed genes between cancerous and normal tissues is crucial. In the study, two cDNA libraries of lung cancer were constructed and screened for identification of differentially expressed genes. Methods Two cDNA libraries of differentially expressed genes were constructed using lung adenocarcinoma tissue and adjacent nonmalignant lung tissue by suppression subtractive hybridization. The data of the cDNA libraries were then analyzed and compared using bioinformatics analysis. Levels of mRNA and protein were measured by quantitative real-time polymerase chain reaction (q-RT-PCR) and western blot respectively, as well as expression and localization of proteins were determined by immunostaining. Gene functions were investigated using proliferation and migration assays after gene silencing and gene over-expression. Results Two libraries of differentially expressed genes were obtained. The forward-subtracted library (FSL) and the reverse-subtracted library (RSL) contained 177 and 59 genes, respectively. Bioinformatic analysis demonstrated that these genes were involved in a wide range of cellular functions. The vast majority of these genes were newly identified to be abnormally expressed in lung cancer. In the first stage of the screening for 16 genes, we compared lung cancer tissues with their adjacent non-malignant tissues at the mRNA level, and found six genes (ERGIC3, DDR1, HSP90B1, SDC1, RPSA, and LPCAT1) from the FSL were significantly up-regulated while two genes (GPX3 and TIMP3) from the RSL were significantly down-regulated (P < 0.05). The ERGIC3 protein was also over-expressed in lung cancer tissues and cultured cells, and expression of ERGIC3 was correlated with the differentiated degree and histological type of lung cancer. The up-regulation of ERGIC3 could promote cellular migration and proliferation in vitro. Conclusions The two libraries of differentially expressed genes may provide the basis for new insights or clues for finding novel lung cancer-related genes; several genes were newly found in lung cancer with ERGIC3 seeming a novel lung cancer-related gene. ERGIC3 may play an active role in the development and progression of lung cancer.
Genome Biology of Actinobacillus pleuropneumoniae JL03, an Isolate of Serotype 3 Prevalent in China
Zhuofei Xu, Yan Zhou, Liangjun Li, Rui Zhou, Shaobo Xiao, Yun Wan, Sihua Zhang, Kai Wang, Wei Li, Lu Li, Hui Jin, Mingsong Kang, Baolige Dalai, Tingting Li, Lei Liu, Yangyi Cheng, Lei Zhang, Tao Xu, Huajun Zheng, Shiying Pu, Bofei Wang, Wenyi Gu, Xiang-Lin Zhang, Geng-Feng Zhu, Shengyue Wang, Guo-Ping Zhao, Huanchun Chen
PLOS ONE , 2008, DOI: 10.1371/journal.pone.0001450
Abstract: Actinobacillus pleuropneumoniae is the etiologic agent of porcine contagious pleuropneumonia, a cause of considerable world wide economic losses in the swine industry. We sequenced the complete genome of A. pleuropneumoniae, JL03, an isolate of serotype 3 prevalent in China. Its genome is a single chromosome of 2,242,062 base pairs containing 2,097 predicted protein-coding sequences, six ribosomal rRNA operons, and 63 tRNA genes. Preliminary analysis of the genomic sequence and the functions of the encoded proteins not only confirmed the present physiological and pathological knowledge but also offered new insights into the metabolic and virulence characteristics of this important pathogen. We identified a full spectrum of genes related to its characteristic chemoheterotrophic catabolism of fermentation and respiration with an incomplete TCA system for anabolism. In addition to confirming the lack of ApxI toxin, identification of a nonsense mutation in apxIVA and a 5′-proximal truncation of the flp operon deleting both its promoter and the flp1flp2tadV genes have provided convincing scenarios for the low virulence property of JL03. Comparative genomic analysis using the available sequences of other serotypes, probable strain (serotype)-specific genomic islands related to capsular polysaccharides and lipopolysaccharide O-antigen biosyntheses were identified in JL03, which provides a foundation for future research into the mechanisms of serotypic diversity of A. pleuropneumoniae.
The staphylococcal nuclease prevents biofilm formation in Staphylococcus aureus and other biofilm-forming bacteria
JunNi Tang,MingSong Kang,HuanChun Chen,XianMing Shi,Rui Zhou,Juan Chen,YiWu Du
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4195-5
Abstract: The staphylococcal nuclease, encoded by the nuc1 gene, is an important virulence factor of Staphylococcus aureus. However, the physiological role of the nuclease has not been fully characterized. The current study observed that biofilm development could be prevented in staphylococcal nuclease-producing strains of S. aureus; however, when the nuc1 gene was knocked out, the ability to form a biofilm significantly increased. Scanning electron and confocal scanning laser microscopy were used to evaluate the role of the nuc1 gene in biofilm formation. Moreover, the nuc1 gene product, staphylococcal nuclease, and recombinant NUC1 protein were found to have a visible effect on other biofilm-forming bacteria, such as Pseudomonas aeruginosa, Actinobacillus pleuropneumoniae, and Haemophilus parasuis. The current study showed a direct relationship between staphylococcal nuclease production and the prevention of biofilm development. The findings from this study underscore the important role of staphylococcal nuclease activity to prevent biofilm formation in S. aureus. They also provided evidence for the biological role of staphylococcal nucleases in other organisms.
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