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Search Results: 1 - 10 of 59778 matches for " YANG Hongwei "
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Wronskian and Grammian Solutions for Generalized (n + 1)-Dimensional KP Equation with Variable Coefficients  [PDF]
Hongwei Fu, Yang Song, Juan Xu
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.32024
Abstract: The generalized (n + 1)-dimensional KP equation with variable coefficients is investigated in this paper. The bilinear form of the equation has been obtained by the Hirota direct method. In addition, with the help of Wronskian technique and the Pfaffian properties, Wronskian and Grammian solutions have been generated.
Study on the Diversification Trend and Countermeasures of Juvenile Crime
Xiejiao Yang,Hongwei Zhang
Journal of Politics and Law , 2010, DOI: 10.5539/jpl.v3n2p170
Abstract: stability and the economic construction. Based on the survey and research of above problem, the characters, forms, causes, and countermeasures of juvenile crime are discussed in detail in this article. The research result of this article is hoped to mobilize the power of the whole society to participate in the comprehensive treatment of juvenile crime, even minor crime, prevent and reduce the juvenile crime, maintain the stability of the society, protect young people’s legal rights and interests, and promote their healthy growth.
Research Online Mobile: Towards a Universal Collaboration Research Environment  [PDF]
Taotao Shi, Yongzheng Ma, Guangyuan Liu, Jianjun Xie, Hongwei Yang
Communications and Network (CN) , 2013, DOI: 10.4236/cn.2013.51B024
Abstract:

The collaboration research environment aims to support a team of researchers who are working coordinately over the Internet. With the popularity of mobile phones and the widespread use of the high-speed wireless network, people are demanding a universal collaboration research environment in which they can cooperate wherever they are. In this paper, we present the Research Online Mobile, a universal collaboration research environment based on the Duckling platform, which is an open source software. The framework, key services and applications of the Research Online Mobile are also elucidated. The Research Online Mobile has been released and used by several research communities.

A Method for Calculating the Heats of Formation of Medium-Sized and Large-Sized Molecules  [PDF]
Bing He, Hongwei Zhou, Fan Yang, Wai-Kee Li
Open Journal of Physical Chemistry (OJPC) , 2015, DOI: 10.4236/ojpc.2015.53008
Abstract: A calculation method for heats of formation (HOF, referred to as △Hf) based on the density functional theory (DFT) is presented in this work. Similar to Gaussian-3 theory, the atomic scheme is applied to calculate the heats of formation of the molecules. In this method, we have modified the formula for calculation of Gaussian-3 theory in several ways, including the correction for diffuse functions and the correction for higher polarization functions. These corrections are found to be significant. The average absolute deviation from experiment for the 164 calculated heats of formation is about 1.9 kcal·mol?1, while average absolute deviation from G3MP2 for the 149 (among the 164 molecules, 15 large-sized molecules can not be calculated at the G3MP2 level) calculated heats of formation is only about 1.9 kcal·mol?1. It indicates that the present method can be applied to predict the heats of formation of medium-sized and large-sized molecules, while the heats of formation of these molecules using Gaussian-3 theory are much difficult, even impossible, to calculate. That is, this method provides a choice in the calculation of Hf for medium-sized and large-sized molecules.
Use of Religion: An Effective Method of Coping among Chinese Patients with Cancer  [PDF]
Huaxia Liu, Hongwei Shi, Qianqian Yang, Aletha Rowlands, Minghua Han
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.510094
Abstract: Religion and/or spirituality (R/S) plays a variety of important and inter-related roles for most advanced cancer patients. It has confirmed that religious involvement helps the patients to ease stress and provides individuals with positive coping strategies. However, much less attention has been given to how religion has been used to cope with cancer in China. The aim of this study was to explore the self-adjustment and experiences of religious coping among Chinese patients with cancer. A qualitative descriptive approach was chosen for this investigation. 16 Chinese patients with cancer were recruited from 4 hospitals in Tai’an, Shandong, China from April 2013 to October 2013 and completed 0.5 - 1 hour of in-depth interviews. Data were analyzed by modification of Colaizzi’s phenomenological method. Three themes were derived from the experiences of the participants: 1) self-adjustment including cognitive adjustment, faith adjustment and behavior adjustment; 2) the experience of religion coping with the cancer patients including emotional, physical and social aspect; 3) hope and power including the hope to heal, to survive from cancer, and to live longer, the cure, the spiritual supporter and the helper. The use of religion is an effective method for patients coping with cancer. Cancer patients use religion to obtain physiological, psychological, and spiritual comfort. Such knowledge is imperative for evidence-based nursing practice. As point of care providers, staff nurses are well poised to design systems and processes to accomplish the goals of providing excellent nursing care, which is reflective of a holistic and multicultural environment.
Compressed Sensing Based on the Single Layer Wavelet Transform for Image Fusion  [PDF]
Guohui Yang, Wude Xu, Bo Zheng, Fanglan Ma, Xuhui Yang, Hongwei Ma, Hongxia Zhang, Genliang Han
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.415010
Abstract:
In this paper, a new method of combination single layer wavelet transform and compressive sensing is proposed for image fusion. In which only measured the high-pass wavelet coefficients of the image but preserved the low-pass wavelet coefficient. Then, fuse the low-pass wavelet coefficients and the measurements of high-pass wavelet coefficient with different schemes. For the reconstruction, by using the minimization of total variation algorithm (TV), high-pass wavelet coefficients could be recovered by the fused measurements. Finally, the fused image could be reconstructed by the inverse wavelet transform. The experiments show the proposed method provides promising fusion performance with a low computational complexity.
Effects of Ti-Based Additives on the Hydrogen Storage Properties of a / Destabilized System
Hongwei Yang,Adeola Ibikunle,Andrew J. Goudy
Advances in Materials Science and Engineering , 2010, DOI: 10.1155/2010/138642
Abstract: The hydrogen storage properties of a destabilized / system ball-milled with , , and additives have been investigated. It is found that the system with additive has a lower dehydrogenation temperature than the ones with other additives. Further study shows that a higher amount of is more effective in reducing the desorption temperature of the / system, since it leads to a lower activation energy of dehydrogenation. The activations energies for mixtures containing 4, 10, and 25?mol% of are 141, 126, and 110?kJ/mol, respectively. However, the benefits of higher amounts of are offset by a larger reduction in hydrogen capacity of the mixtures. 1. Introduction LiBH4 has attracted considerable attention for hydrogen storage in the past few years because it can theoretically release 13.6?wt% hydrogen when it decomposes to LiH and B [1]. However, the enthalpy of this reaction is about 72?kJ/mole?H2, and therefore the dehydrogenation of LiBH4 initiates at about 400°C and has its maximum at around 600°C, which is too high to be able to meet DOE’s goals for on-board hydrogen storage systems [2]. By adopting a so-called “destabilization” concept first developed by Reilly and Wiswall [3], Vajo et al. [4, 5] modified the thermodynamics of LiBH4 by coupling LiBH4 and MgH2 together with a small amount of TiCl3 added as catalyst. The addition of MgH2 as a destabilizing reactant changes the reaction pathway and thus reduces the enthalpy of dehydrogenation. Compared with pure LiBH4, the mixture of MgH2/LiBH4 not only had a lower dehydrogenation temperature but more importantly achieved reversibility under moderate conditions. A similar strategy was also applied in mixing LiBH4 with other destabilizing additives, such as LiNH2 [6], metal oxides, and metal chlorides [7, 8]. There are a large number of reaction schemes that could form a destabilized hydrogen storage system. One of reaction schemes that has the potential to meet DOE’s goals for hydrogen storage is the destabilization of LiBH4 using CaH2 as destabilizing reactant, according to the following reaction: This reaction can theoretically release about 11.7?wt% hydrogen. In addition, the enthalpy for this reaction, calculated by Alapati et al. [9, 10], is about 47?kJ/mol H2, which falls within the range of 30–60?kJ/mol estimated for a reversible hydrogen storage system. Yang et al. [11] reported that samples of 6LiBH4 + CaH2 released about 5.1?wt% of hydrogen at 395°C and that the formation of decomposition product, CaB6, was confirmed by XRD. However, they found that the dehydrogenated sample was not capable of being
Transformation of ethylene to higher hydrocarbons on silica-supported Ir catalysts: the nature of carbonaceous deposits
Hongwei Yang,Shik Chi Edman Tsang
Applied Petrochemical Research , 2012, DOI: 10.1007/s13203-012-0009-3
Abstract: The first stage of ethylene decomposition followed by second stage of temperature-programmed surface reduction (H2-TPSR) to produce higher hydrocarbons at different temperatures over silica-supported iridium catalysts has been investigated. The catalysts for the two stepwise reactions are characterized by X-ray diffraction, Raman and Fourier transformed infrared spectroscopies, temperature-programmed reduction, and mass spectroscopy. These studies reveal that ethylene decomposition at low temperatures (≤673 K) in the first stage produces mainly C1 hydrocarbon moieties on the Ir surface via dissociative adsorption, the sequential hydrogenation in the second stage will give arise to CH4. The surface polymerization of C1 to higher hydrocarbon species and metathesis reactions under these temperatures are also clearly evident. When ethylene is decomposed at 773–973 K, stable graphitic carbon deposits with poor propensity for hydrogenation are obtained. Interestingly, water formed from surface dehydroxylation on silica can produce a significant quantity of CO/H2 with these carbons during the H2-TPSR at elevated temperature.
Survey of Intracellular Protein Extraction Methods from Pichia pastoris  [PDF]
Yuli Wang, Yuansen Hu, Yang Lei, Yangyong Lv, Le Wang, Hongwei Wei
World Journal of Engineering and Technology (WJET) , 2015, DOI: 10.4236/wjet.2015.34C001
Abstract:

The broken efficiency of cell wall and the release amount of Pichia pastoris intracellular protein under different cell breaking conditions were investigated in this paper. The results showed that broken efficiency using hot alkali combined with high-pressure homogenizing method was higher than that of enzyme hydrolysis, hot alkali treatment and high-pressure homogenation, respectively. Suspended medium had little effect on the broken efficiency of yeast cell, but had significant effect on the protein release yield. The results indicated that optimal condition for intracellular proteins extraction was 30% (wet weight, w/v) of yeast cells suspend in 50 mM phosphate buffer (pH 10.0), water bathed at 60?C for 2 hours, homogenized twice at 100 MPa pressure. The broken efficiency of Pichia pastoris cell could reach 87.6% and the protein yield was 35.48 g per 100 g cells.

Study on the Existence of Sign-Changing Solutions of Case Theory Based a Class of Differential Equations Boundary-Value Problems  [PDF]
Hongwei Ji
Advances in Pure Mathematics (APM) , 2017, DOI: 10.4236/apm.2017.712042
Abstract: By using the fixed point theorem under the case structure, we study the existence of sign-changing solutions of A class of second-order differential equations three-point boundary-value problems, and a positive solution and a negative solution are obtained respectively, so as to popularize and improve some results that have been known.
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