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Search Results: 1 - 10 of 67953 matches for " Yan Hong "
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Severe Anemia and Thrombocytopenia in a Premature Associated with a Large Placental Chorioangioma  [PDF]
Hong Jiang, Yan Liu, Mengya Sun
Open Journal of Pediatrics (OJPed) , 2015, DOI: 10.4236/ojped.2015.51009
Abstract:

Chorioangioma is a tumor of vascular placental origin, the most frequent among primary placental non-trophoblastic tumors; however, it is found in about 1% of placental pathology case studies. Most of the chorioangiomas found are small, asymptomatic lesions that are only found postnatally after careful slicing of the placenta[1]. Larger tumors, particularly those measuring more than 4 cm, are rarely seen in obstetric practice but are clinically significant. In this case report, we will show you the premature with large chorioangioma and we will tell the treatment we take to cure the baby successfully.

Uniqueness of Transcendental Meromorphic Functions with Their Nonlinear Differential Polynomials Sharing the Small Function
Hong-Yan Xu
International Journal of Mathematics and Mathematical Sciences , 2007, DOI: 10.1155/2007/84961
Abstract: We deal with some uniqueness theorems of two transcendental meromorphic functions with their nonlinear differential polynomials sharing a small function. These results in this paper improve those given by C.-Y. Fang and M.-L. Fang (2002), by Lahiri and Pal (2006), and by Lin and Yi (2004).
A format for databasing and comparison of AFLP fingerprint profiles
Yan Hong, Aaron Chuah
BMC Bioinformatics , 2003, DOI: 10.1186/1471-2105-4-7
Abstract: A scheme is described to represent a DNA fingerprint profile with a nucleotide sequence-like format in which the information line contains the minimal necessary details to interpret an AFLP DNA fingerprint profile. They include technique used, information on restriction enzymes, primer combination, biological source for DNA materials, fragment sizing and annotation. The bodylines contain information on size and relative intensity of DNA fragments by a string of defined alphabets or symbols. Algorithms for normalizing raw data, binning of fragments and comparing AFLP DNA fingerprint profiles are described. Firstly, the peak heights are normalized against their average and then represented by five symbols according to their relative intensities. Secondly, a binning algorithm based loosely on common springs and rubber bands is applied, which positions sequence fragments into their best possible integer approximations. A BLAST-like reward-penalty concept is used to compare AFLP fingerprint profiles by matching peaks using two metrics: score and percentage of similarity. A software package was developed based on our scheme and proposed algorithms. Example of use this software is given in evaluating novelty of a new tropical orchid cultivar by comparing its AFLP fingerprint profile against those of related commercial cultivars in a database.AFLP DNA fingerprint profiles can be databased and compared effectively with software developed based on our scheme and algorithms. It will facilitate wider use of this DNA fingerprinting technique in areas such as forensic study, intellectual property protection for biological materials and biodiversity management. Moreover, the same concepts can be applied to databasing and comparing DNA fingerprint profiles obtained with other DNA fingerprint techniques.DNA markers reflect difference in the DNA sequences of chromosomes derived from different progenitors. They arise as a result of mutations as well as rearrangements in the DNA interv
HoughFeature, a novel method for assessing drug effects in three-color cDNA microarray experiments
Hongya Zhao, Hong Yan
BMC Bioinformatics , 2007, DOI: 10.1186/1471-2105-8-256
Abstract: Based on the celebrated Hough transform, a novel algorithm, HoughFeature, is proposed to extract line features in the hexaMplot corresponding to different drug effects. Drug therapy results can then be divided into a number of levels in relation to different groups of genes. We apply the framework to experimental microarray data to assess the complex effects of Rg1 (an extract of Chinese medicine) on Hcy-related HUVECs in details. Differentially expressed genes are classified into 15 functional groups corresponding to different levels of drug effects.Our study shows that the HoughFeature algorithm can reveal natural cluster patterns in gene expression data of normal-disease-drug samples. It provides both qualitative and quantitative information about up- or down-regulated genes. The methodology can be employed to predict disease susceptibility in gene therapy and assess drug effects on the disease based on three-color microarray data.Microarray experiments can produce expression data of thousands of genes simultaneously. They are useful for disease diagnosis, prognosis and treatment planning as well as the discovery and development of novel pharmaceutical products [1-11]. However, these experiments, which commonly use two colors, are costly and time-consuming, thus there is a need to improve the technology. By adding blue Alexa 594 as a dye-label, a three-color microarray experiment can be carried out. According to recent experimental and statistical analysis, there is no evidence that the inclusion of Alexa594 as the third dye-label causes additional noise or unexpected results in the data [12,13]. A three-color microarray experiment requires fewer arrays, saves samples, and simplifies the experimental process, leading to a reduction of costs and time without compromising gene expression data [12-14].However, three-color microarrays have not been used widely yet partly because of the lack of data analysis tools. Existing data analysis methods are usually borrowed f
Computational Analysis of Nucleosome Positioning Signals in the Simian Virus 40 Chromatin
Hongyan Zhao,Hong Yan
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Delineating SPECT Lung Contours using 3D Snakes
Alex Wang,Hong Yan
Lecture Notes in Engineering and Computer Science , 2010,
Abstract:
(E)-4-Methoxy-N′-(4-nitrobenzylidene)benzohydrazide methanol monosolvate
Hong-Yan Ban
Acta Crystallographica Section E , 2010, DOI: 10.1107/s160053681004701x
Abstract: The hydrazone molecule of the title compound, C15H13N3O4·CH4O, is nearly planar, with a dihedral angle between the two benzene rings of 1.2 (4)°. The molecule exists in a trans configuration with respect to the central methylidene unit. In the crystal, the benzohydrazide and methanol molecules are linked through intermolecular O—H...O, O—H...N and N—H...O hydrogen bonds, forming chains along the a axis.
Entropy based sub-dimensional evaluation and selection method for DNA microarray data classification
Yi Wang,Hong Yan
Bioinformation , 2008,
Abstract: DNA microarray allows the measurement of expression levels of tens of thousands of genes simultaneously and has many applications in biology and medicine. Microarray data are very noisy and this makes it difficult for data analysis and classification. Sub-dimension based methods can overcome the noise problem by partitioning the conditions into sub-groups, performing classification with each group and integrating the results. However, there can be many sub-dimensional groups, which lead to a high computational complexity. In this paper, we propose an entropy-based method to evaluate and select important sub-dimensions and eliminate unimportant ones. This improves the computational efficiency considerably. We have tested our method on four microarray datasets and two other real-world datasets and the experiment results prove the effectiveness of our method.
Statistical investigation of position-specific deformation pattern of nucleosome DNA based on multiple conformational properties
Xi Yang*,Hong Yan
Bioinformation , 2011,
Abstract: The histone octamer induced bending of DNA into the super-helix structure in nucleosome core particle, is very unique and vital for DNA packing into chromatin. We collected 48 nucleosome crystal structures from PDB and applied a multivariate analysis on the nucleosome structural data. Based on the anisotropic nature of DNA structure, a principal conformational subspace (PCS) is derived from multiple properties to represent the most significant variances of nucleosome DNA structures. The coupling of base pair-oriented parameters with sugar phosphate backbone parameters presented in principal dimensionalities reveals two main deformation modes that have supplemented the existing physical model. By using sequence alignment-based statistics, a position-dependent conformational map for the super-helical DNA path is established. The result shows that the crystal structures of nucleosome DNA have much consistency in position-specific structural variations and certain periodicity is found to exist in these variations. Thus, the positions with obvious deformation patterns along the DNA path in nucleosome core particle are relatively conservative from the perspective of statistics.
6-Benzyl-2-[(triphenyl-λ5-phosphanylidene)amino]-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carbonitrile
Hong Chen,Kai Yan
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811035082
Abstract: In the title compound, C33H28N3PS, the P atom has a distorted tetrahedral PNC3 environment, formed by the N atom and three aryl rings. No intermolecular hydrogen-bonding interactions or π–π stacking interactions are present in the crystal structure.
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