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Search Results: 1 - 10 of 51377 matches for " Min Guo "
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Changes in Land Use, Socioeconomic Indices, and the Transportation System in Gifu City and their Relevance during the Late 20th Century  [PDF]
Min Guo, Fumitaka Kurauchi
Open Journal of Civil Engineering (OJCE) , 2012, DOI: 10.4236/ojce.2012.23024
Abstract: History provides valuable lessons for the interplay of factors that shape urban growth and development. This study examines changes in land use, socioeconomic indices, and the transportation system of Gifu City during the late 20th century using geographical information system (GIS) methods. The data for the study were historical maps and the population census and economic statistics data from 1950 to 2000, when Japan was in a period of high economic growth. The discussion focuses on the master plan, road construction, land use, the spatial distribution of the population, and socioeconomic indices. It was possible to compare spatial distribution patterns over time using GIS. When policies were created that attached importance to construction of a road network due to the development of motorization and elimination of the city tram, the surrounding suburban area became the focus of land-use development. As a result, Gifu City is plagued by the doughnut phenomenon. It is important to identify the relationships among urban planning factors to provide for future urban and transportation planning.
The Study on First-Aid Education of Disaster for Primary School Student in China  [PDF]
Min Zhang, Li Li Guo, Min Xu
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B029
Abstract:

Objective:To investigate current status of school disaster education of primary school students and analyze potential causes and discuss how to establish a corresponding education mode. Methods:The questionnaires of disaster knowledge for Primary and middle school students were used in this study and a random sampling method was adopted for the research. Results:The primary school students maintained the high rate of disaster attention. 73% primary school students had pay attention to the occurrence of disasters; more than 75% primary school students were lack of knowledge on disaster prevention and mitigation and 58.5% students were not satisfied with school disaster education work. Conclusions:There was dislocation between the way and mode of school disaster education.It might improve the quality of the disaster education and expand the disaster education to promote the development of disaster education.

Bis[5-(2-amino-3-pyridyl)tetrazolato]copper(II)
Min Guo
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809034369
Abstract: In the centrosymmetric title complex, [Cu(C6H5N6)2], the CuII ion is coordinated by four N atoms from two symmetry-related bidentate 5-(2-amino-3-pyridyl)tetrazolate ligands in a slightly distorted square-planar environment. There are weak intramolecular N—H...N hydrogen bonds between the two ligands. In the crystal structure, there are significant π–π stacking interactions between symmetry-related tetrazole and pyridine rings, with a centroid–centroid distance of 3.6025 (18)°.
4,5-Bis(1H-tetrazol-5-yl)-1H-imidazole monohydrate
Min Guo
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809017899
Abstract: The title compound, C5H4N10·H2O, is composed of three five-membered rings that are essentially coplanar, the dihedral angles between the imidazole ring and the tetrazole rings being 3.5 (2) and 3.0 (2)°. In the crystal, intermolecular O—H...N, N—H...O and N—H...N hydrogen bonds lead to the formation of a three-dimensional network. An intramolecular N—H...N hydrogen bond is also present.
1-Cyanomethyl-1,4-diazoniabicyclo[2.2.2]octane tetrachloridomanganate(II)
Min Guo,Min Min Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s160053681004047x
Abstract: In the crystal structure of the title compound, (C8H15N3)[MnCl4], the Mn atom is coordinated by four chloride ligands in a slightly distorted tetrahedral geometry. Each [MnCl4]2 anion is connected to the 1-cyanomethyl-1,4-diazoniabicyclo[2.2.2]octane dications by N—H...Cl hydrogen bonds, forming chains parallel to [001].
4-Bromoanilinium perchlorate 18-crown-6 clathrate
Min Guo,Min Min Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810040481
Abstract: The reaction of 4-bromoaniline, 18-crown-6, and perchloric acid in methanol yields the title compound, C6H7BrN+·ClO4 ·C12H24O6, in which the protonated –NH3+ group forms three bifurcated N—H...O hydrogen bonds to the O atoms of the crown ether.
A Study Regarding Solution of a Knowledge Model Based on the Containing-Type Error Matrix Equation  [PDF]
Xilin Min, Kaizhong Guo, Jize Huang
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.48063
Abstract: An error matrix equation based on error matrix theory was presented in previous research of the error-eliminating theory. The purpose of solving the error matrix equation is to create a decision support on how to switch from bad to good status. A matrix based on error logic is used to express current status u, expectant status u1 and transformation matrix T. It is u, u1, and T that are used to build error matrix equation T (u)= u1. This allows us to find a method whereby bad status “u” changes to good status “u1” by solving the equation. The conversion method that transform from current to expectant status can be obtained from the transformation matrix T. On this basis, this paper proposes a new kind of error matrix equation named “containing-type error matrix equation”. This equation is more suitable for analyzing the realistic question. The method of solving, existence and form of solution for this type of equation have been presented in this paper. This research provides a potential useful new technique for decision analysis.
Rapid Residue Analysis of Sulfonylurea Herbicides in Surface Water: Methodology and Residue Findings in eastern Tiaoxi River of China  [PDF]
Ninghui Song, Min Guo, Lili Shi
Journal of Materials Science and Chemical Engineering (MSCE) , 2016, DOI: 10.4236/msce.2016.46006
Abstract:
A new method combining QuEChERS (quick, easy, cheap, effective, rugged and safe) and DLLME (dispersive liquid–liquid microextraction) for the simultaneous determination of residues of ten sulfonylurea herbicide in water using UPLC-MS/MS was developed and validated. Analytes were extracted and purified with QuEChERS and concentrated in chlorobenzene by applying the DLLME procedure. Several extraction parameters were tested, such as volume, extractive solvent by the QuEChERS method and subsequently used for DLLME, selection of extractive solvent and its volume, was tested. The developed method was validated on the basis of international guidelines. Mean recoveries ranged from 81.2 to 104.9%. Repeatability and reproducibility were lower than 10%. Limits of detection (LODs) and quantification (LOQs) were below 0.074 μg/L and 0.244 μg/L, respectively. Decision limit (CCα) and detection capability (CCβ) were calculated and CCβ ranged from 0.101 μg/L (pyrazosulfuron-ethyl) to 0.260 μg/L (nicosulfuron). Finally, when the method was applied to real samples, traces of three compounds were found in 42 samples and only thifensulfuon-methyl was detected above the LOQ in three samples at 0.17-0.20 μg/L.
A special issue on DNA damage response and genome stability
Guo-Min Li
Cell & Bioscience , 2012, DOI: 10.1186/2045-3701-2-4
Abstract: Fortunately, humans and other eukaryotes have evolved multiple mechanisms to ensure genome stability. These mechanisms can be classified into two major systems, one that deals with replication fidelity and the other that takes care of various DNA lesions. The replication fidelity maintenance system involves DNA polymerases and the DNA mismatch repair pathway. First, the 3'-5' proofreading nuclease activity of replicative DNA polymerases is responsible for removing the majority of mis-incorporated nucleotides during DNA replication [1]. However, there are always cases where certain mis-incorporations escape from the proofreading activity. In the latter situation, the mismatch repair machinery [2] is recruited to the site to correct the mismatch. If a DNA template contains a bulky DNA adduct that blocks the polymerization activity of replicative polymerases, a specialized DNA polymerase, also called translesion synthesis polymerase, is employed to bypass the bulky DNA lesion, followed by a switch back to the replicative polymerase to continue normal replication [3].The DNA damage processing system can be divided into two steps: DNA damage response and DNA repair. Extensive studies in the past 20 years have elucidated the mechanisms of several major DNA repair pathways that remove almost all kinds of DNA lesions. These pathways include base excision repair [4], nucleotide excision repair [5,6], mismatch repair [2] and double strand break repair [7,8].DNA damage response is a complex signal transduction process that has the ability to sense DNA damage and transduce the information to the cell to direct cellular responses to the damage. An arsenal of protein activities has been identified, which function to be damage sensors, mediators, transducers and effectors during DNA damage response [9]. Unlike the DNA repair pathways, however, the mechanism of DNA damage response is much less known.In this issue, Cell & Bioscience presents a series of reviews attempting to define
An integrodifferential equation with fractional derivatives in the nonlinearities
Zhenyu Guo and Min Liu
ACTA MATHEMATICA UNIVERSITATIS COMENIANAE , 2013,
Abstract: An integrodifferential equation with fractional derivatives in the nonlinearities is studied in this article, and some sufficient conditions for existence and uniqueness of a solution for the equation is established by contraction mapping principle.
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