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Search Results: 1 - 10 of 78394 matches for " YANG Hua "
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Acute Myocardial Infarction in a 26-Year-Old Man with Normal ST-Segment  [PDF]
Yuping Yang, Hua Chen
Case Reports in Clinical Medicine (CRCM) , 2017, DOI: 10.4236/crcm.2017.66015
Abstract: Acute myocardial infarction (AMI) is rare in young adults. The management of these patients is considered as a clinical challenge. We report the case of a 26-year-old man who was presented to the Emergency Room of Affiliated Hospital of Guilin Medical University with an acute onset of chest pain. Initially electrocardiogram (ECG) with no evidence of ST-segment abnormalities but QT prolongation a signal of sudden cardiac death, 20 minutes later, it revealed ST-segment elevation myocardial infarction (STEMI). Coronary angiography (CAG) demonstrated left main coronary artery occlusion. AMI was diagnosed based on clinical symptom, elevated cardiac biomarkers, electrocardiographic dynamic monitoring and CAG. The awareness of chest pain as possible underlying AMI symptom—especially in young patients presenting with QT prolongation—is crucial for clinical treatment, as a missed diagnosis can worsen the patient’s further prognosis. In addition, reperfusion arrhythmia is a challenge to short-term outcomes of young patients with AMI, so it is necessary to make preoperative risk stratification.
The feature of papers and citation analysis of eleven journals in tropical medicine indexed by Science Citation Index Expanded
Hua, Yang;
Memórias do Instituto Oswaldo Cruz , 2005, DOI: 10.1590/S0074-02762005000700023
Abstract: to determine the features of papers, authors, and citation of eleven journals in tropical medicine indexed by science citation index expanded, the database of the institute for scientific information, we analyzed original articles, editorials, reviews, corrections, letters, biographies, and news published in these journals. the results show that these journals covered 107 countries or regions on six continents. the average number of reference was 23.05, with 87.89% of the references from periodicals. the price index was 31.43% and the self-citing rate was 7.02%. the references in the first 20 journals ranked by the amount of citation accounted for 36.71% of the total citations. brazil, united states, india, and england are more advanced in tropical medicine research. the conclusion is that these journals covered most research done in these countries or regions. most researches were done by cooperation of the researchers, but many of the publications used outdated articles and should include newer information.
(2-Amino-4,6-dimethylpyrimidine-κN1)(2-amino-4-methylpyrimidine-κN1)silver(I) nitrate
Hua Yang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809035181
Abstract: Colourless crystals of the title compound, [Ag(C5H7N3)(C6H9N3)]NO3, separated out of a solution of 2-amino-4-methylpyrimidine, 2-amino-4,6-dimethylpyrimidine and silver nitrate in water and methanol. The central AgI ion is coordinated by two different N atoms in the aromatic rings of the ligands, with an N—Ag—N angle of 173.9 (2)°. The crystal structure is composed of two complexed cations and stabilized by an intermolecular N—H...O and N—H...N hydrogen-bond network and there is π–π stacking of the aromatic rings [interplanar distance 3.651 (10) ].
Trichloridotris{N-[phenyl(pyridin-2-yl)methylidene]hydroxylamine-κ2N,N′}neodymium(III)
Hua Yang
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812014055
Abstract: In the title compound, [NdCl3(C12H10N2O)3], the central NdIII ion is nine-coordinated by six N atoms from three bidentate chelate N-[phenyl(pyridin-2-yl)methylidene]hydroxylamine ligands and three Cl ions, and displays a distorted tricapped trigonal prismatic geometry. The complex molecules are stabilized by intramolecular O—H...Cl hydrogen bonds.
Bis(2,2′-bipyridine-κ2N,N′)tris(nitrato-κ2O,O′)erbium(III)
Hua Yang
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812014031
Abstract: The asymmetric unit of the title compound, [Er(NO3)3(C10H8N2)2], contains one-half molecule situated on a twofold rotation axis. The ErIII ion is in a tenfold coordination by six O atoms from three NO3 anions and four N atoms from two 2,2′-bipyridine ligands in a distorted bicapped dodecahedral geometry. In the crystal, weak C—H...O hydrogen bonds hold the molecules together.
Bis[μ-N-(2-oxidobenzylidene)pyridine-2-carbohydrazidato]bis[chlorido(methanol-κO)erbium(III)]
Hua Yang
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812013979
Abstract: In the binuclear title complex, [Er2(C13H9N3O2)2Cl2(CH3OH)2], the entire molecule is generated by the application of inversion symmetry. Each ErIII ion is seven-coordinated by two O atoms and one N atom from one N-(2-oxidobenzylidene)pyridine-2-carbohydrazidate (L2 ) ligand, one O atom and one N atom from the symmetry-related L2 ligand, one O atom of a methanol molecule and one chloride anion. The coordination geometry is based on a pseudo-pentagonal bipyramid. Linear supramolecular chains along [010] are formed in the crystal packing through O—H...Cl hydrogen bonds.
Tetraaqua(2,2′-bipyridine-5,5′-dicarboxylato-κ2N,N′)nickel(II) dihydrate
Hua Yang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809035910
Abstract: In the title compound, [Ni(C12H6N2O4)(H2O)4]·2H2O, obtained from a basic solution of 2,2′-bipyridine-5,5′-dicarboxylate and nickel(II) chloride in water, the central Ni(II) cation (site symmetry 2) is coordinated by two N atoms from the 2,2′-bipyridine-5,5′-dicarboxylate ligand and four aqua O atoms. The N—Ni—N angle is 78.64 (8)°. Weak but significant π–π stacking interactions exist between the pyridine rings with a centroid–centroid distance of 3.652 (8) . In addition, four O atoms of the two carboxyl groups form hydrogen bonds with both coordinated and uncoordinated water molecules, forming an infinite three-dimensional network.
(2-Amino-4,6-dimethylpyrimidine-κN1)(2-amino-4-methylpyrimidine-κN1)silver(I) perchlorate
Hua Yang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809035193
Abstract: Colourless crystals of the title mixed ligand complex, [Ag(C5H7N3)(C6H9N3)]ClO4, were obtained from a solution of 2-amino-4-methylpyrimidine, 2-amino-4,6-dimethylpyrimidine and silver perchlorate in water and methanol. The crystal structure is stabilized by intermolecular N—H...O and N—H...N hydrogen bonds and π–π stacking interactions of the aromatic rings of the two ligands [interplanar distance = 3.652 (10) ]. The AgI atom shows a linear coordination [N—Ag—N = 174.6 (1)°].
Combining Gene-Phenotype Association Matrix with KEGG Pathways to Mine Gene Modules Using Data Set in GAW17  [PDF]
Hua Lin, Yang Zheng, Ping Zhou
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B067
Abstract:

Currently, genome-wide association studies have been proved to be a powerful approach to identify risk loci. However, the molecular regulatory mechanisms of complex diseases are still not clearly understood. It is therefore important to consider the interplay between genetic factors and biological networks in elucidating the mechanisms of complex disease pathogenesis. In this paper, we first conducted a genome-wide association analysis by using the SNP genotype data and phenotype data provided by Genetic Analysis Workshop 17, in order to filter significant SNPs associated with the diseases. Second, we conducted a bioinformatics analysis of gene-phenotype association matrix to identify gene modules (biclusters). Third, we performed a KEGG enrichment test of genes involved in biclusters to find evidence to support their functional consensus. This method can be used for better understanding complex diseases.

Analysis of Cr Atoms Three-Dimensional Deposition Characteristics  [PDF]
Hua-Lei Yang, Wen-Tao Zhang, Jian Yang
World Journal of Nano Science and Engineering (WJNSE) , 2011, DOI: 10.4236/wjnse.2011.13011
Abstract: The semi-classical model is used to simulate the three-dimensional trajectory and deposition distribution of the chromium atoms in the Gaussian laser standing wave field using the Runge-Kutta method, and then the three-dimensional deposition stripes are also given, besides, the effects of atomic beam divergence, chromatic aberration and spherical aberration on deposition structure are also analyzed.
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