Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 88 )

2018 ( 685 )

2017 ( 728 )

2016 ( 752 )

Custom range...

Search Results: 1 - 10 of 52060 matches for " Hong Peng "
All listed articles are free for downloading (OA Articles)
Page 1 /52060
Display every page Item
The Effects of Plasma Homocysteine in PCOS Women: A Review  [PDF]
Pranita Maharjan, Peng Dan Hong
Open Journal of Obstetrics and Gynecology (OJOG) , 2018, DOI: 10.4236/ojog.2018.81005
Abstract: Homocysteine is an intermediate substance formed during the breakdown of the amino acid methionine and may undergo remethylation to methionine or trans-sulfuration to cystathionine or cysteine. The metabolism occurs via two pathways: remethylation to methionine, which requires folate and vitamin B12; and transsulfuration to cystathionine, which requires pyridoxal-5’-phosphate. The disturbances in the metabolic pathways lead to the accumulation of Hcy, either by insufficient transsulfuration (through CBS mutations or vitamin B6 deficiency) or by a blockage of remethylation. In the latter case, folate or vitamin B12 deficiency may be involved, as well as MTHFR. High levels of Hcy induce sustained injury of arterial endothelial cells, proliferation of arterial smooth muscle cells and enhance activity of key participants in vascular inflammation, atherogenesis, and vulnerability of the established atherosclerotic plaque. Hyperhomocysteinemia has become the topic of interest in recent years. It has been highly associated with increased risk for cardiovascular disorders, such as, atherosclerosis, thromboembolism and dyslipidemia. Women with PCOS show constellation of metabolic syndromes. Obesity, hyperandrogenemia and type 2 diabetes mellitus is the hallmark of PCOS which later becomes the risk factors for cardiovascular disease. Various studies had revealed the presence of increased Hcy level in PCOS women which may or may not be associated with other biochemical parameters. Intense treatment for PCOS can influence homocysteine levels.
A Research on Single Image Dehazing Algorithms Based on Dark Channel Prior  [PDF]
Ebtesam Mohameed Alharbi, Peng Ge, Hong Wang
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.42006
Abstract: In the field of computer and machine vision, haze and fog lead to image degradation through various degradation mechanisms including but not limited to contrast attenuation, blurring and pixel distortions. This limits the efficiency of machine vision systems such as video surveillance, target tracking and recognition. Various single image dark channel dehazing algorithms have aimed to tackle the problem of image hazing in a fast and efficient manner. Such algorithms rely upon the dark channel prior theory towards the estimation of the atmospheric light which offers itself as a crucial parameter towards dehazing. This paper studies the state-of-the-art in this area and puts forwards their strengths and weaknesses. Through experiments the efficiencies and shortcomings of these algorithms are shared. This information is essential for researchers and developers in providing a reference for the development of applications and future of the research field.
A Novel Dark-Channel Dehazing Algorithm Based on Adaptive-Filter Enhanced SSR Theory  [PDF]
Ebtesam Mohameed Alharbi, Hong Wang, Peng Ge
Journal of Computer and Communications (JCC) , 2017, DOI: 10.4236/jcc.2017.511005
Abstract: Low visibility in foggy days results in less contrasted and blurred images with color distortion which adversely affects and leads to the sub-optimal performances in image and video monitoring systems. The causes of foggy image degradation were explained in detail and the approaches of image enhancement and image restoration for defogging were introduced. The study proposed an enhanced and advanced form of the improved Retinex theory-based dehazing algorithm. The proposed algorithm achieved novel in the manner in which the dark channel prior was efficiently combined with the dark-channel prior into a single dehazing framework. The proposed approach performed the first stage in dehazing within the dark channel domain through implementation with an adaptive filter. This novel approach allowed for the dark channel features to be efficiently refined and boosted, a scheme, which according to the obtained results, significantly improved dehazing results in later stages. Experimental results showed that this approach did little to trade-off dehazing speed for efficiency. This makes the proposed algorithm a strong candidate for real-time systems due to its capability to realize efficient dehazing at considerably rapid speeds. Finally, experimental results were provided to validate the superior performance and efficiency of the proposed dehazing algorithm.
RETRACTED: Coupling Numerical Simulation and Field Experiment to Optimize Vegetation Arrangement for Pleasant Outdoor Wind Environment in Residential District  [PDF]
Bo Hong, Fang Chen, Peng Ren
Journal of Environmental Protection (JEP) , 2015, DOI: 10.4236/jep.2015.64037
Abstract: Short Retraction Notice

The paper does not meet the standards of \"Journal of Environmental Protection\".

This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.

Editor guiding this retraction: Prof. Qingren Wang (EiC of JEP)

The full retraction notice in PDF is preceding the original paper, which is marked \"RETRACTED\".
Maximum Non-Perturbative Strong Interaction Hypothesis and the Structures of Pomeron and Glueball
Hong-an Peng
Physics , 2001,
Abstract: In this paper we first emphasize the importance of the Pomeron (IP) for its asymptotically saturation the unitarity condition alone. After proper modified the field theory model for IP developed by Landshoff and Nochtmann, we argue that the exchange of IP in high energy $h-h'$ scattering embodies the hypothesis of the maximum non-perturbative strong interaction reaction (MNSIR) in which a constituent quark converts into a current quark and emits a color octet non-perturbative gluer. We think the IP is composed from the conjugated pair of such gluer. In the circle of non-perturbative fundamental entities in QCD, we argue that there should exist a new member -- the constituent gluon, it should be emerged in high energy $h-h'$ strong-soft processes, and the glueballs are produced via two constituent gluons fusion. Finally, we conjecture there may be an averaged dual relation between the glueballs and the Pomeron, but this correspondence may become as multi-to-one homologue.
A Control Mechanism of Stream Media Based on 3G Network  [PDF]
Wei Jiang, Liming Meng, Songxiang Ying, Hong Peng, Zhijiang Xu
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.512B002
Abstract: In this paper, we use RTP/RTCP over unreliable UDP to realize the transportation of real time streaming. Meanwhile, according to the transmission feedback and network parameters, we analyze and calculate the network delay, packet loss and RTT (round trip time) to determine the network state. Finally, we propose a streaming media transmission   control scheme which could sense the network state and quickly adjust the rate of the sending side. It takes congestion, packet loss rate into comprehensive consideration and improves the overall performance of 3G network stream media.
Periodic Behavior of Cavitation Cloud Shedding in Submerged Water Jets Issuing from a Sheathed Pipe Nozzle  [PDF]
Guoyi Peng, Ayaka Wakui, Yasuyuki Oguma, Seiji Shimizu, Hong Ji
Journal of Flow Control, Measurement & Visualization (JFCMV) , 2018, DOI: 10.4236/jfcmv.2018.61002
Abstract: The behavior of cavitation cloud shedding in submerged water jets issuing from a sheathed pipe nozzle is investigated experimentally by high-speed camera visualization observation. Experiments are carried out under different cavitation numbers decreased to 0.01 with increase of the injection pressure, and the frequency spectrum of cavitation cloud shedding is evaluated by statistical analysis of a sequence of high-speed camera images. Experiments demonstrate that cavitation clouds appear when the cavitation number σ decreases to the level of 0.5-0.7 and developed cavitation clouds shed downstream periodically at multiple frequencies. The low frequency components of cavitation cloud shedding is basically dependent upon the pressure pulsation of plunger pump, which is often employed in various industry application of water jets. However, the high frequency components are closely related to the shedding of vortexes and the collapsing of cavitation clouds, which are dependent on the flow structure of submerged jets and the property of cavitation clouds consisted of numerous bubbles.
Upregulation of GLE1 and LCP2 Genes in H5N1 Influenza Virus Infected Patients  [PDF]
Wenfeng Peng, Yaping Shi, Baolin Wang, Bo Liu, Zhiyuan Peng, Jianyong Zhang, Ling Chen, Hong Zhang
Advances in Infectious Diseases (AID) , 2016, DOI: 10.4236/aid.2016.63017
Abstract: Previous study showed that the Gle1 RNA export mediator-like (Gle1l) gene and the lymphocyte cytosolic protein 2 (Lcp2) gene were upregulated in response to influenza virus A/Puerto Rico/8/1934 (H1N1) in a mouse mode. To determine whether these two genes were upregulated in humans after influenza A virus infection, nasopharyngeal swabs were collected from eleven patients with flu-like symptoms for viral RNA extraction and PCR amplification. Sequencing analysis revealed that nucleoprotein (NP) gene fragments amplified from nasopharyngeal swabs of four patients shared the highest similarity with the NP gene from avian influenza A (H5N1) virus (A/ goose/Shantou/753/2002). Peripheral blood samples were then collected from four patients for quantitative analysis of GLE1 and LCP2 gene expression. Our results demonstrated that both GLE1 and LCP2 genes were upregulated in H5N1 influenza A virus infected patients, suggesting that upregulation of GLE1 and LCP
Structured plan and its execution for extended goals
,PENG Hong

重庆邮电大学学报(自然科学版) , 2009,
Abstract: In many real world planning domains, some observation information is optional and useless to the execution of a plan, and the information acquisition may require some kind of cost. So it is significant to propose a framework for planning with extended goals under partial observability, which can adapt to the idea of observation reduction. In this paper, a method was proposed to solve the problem. The definition of structured plans was given, which can encode sequential, conditional and iterative behaviors, and are expressive enough for dealing with incomplete observation information and with extended goals. In order to express extended goals over sub-plans and observation information, the interpretation of basic propositions in K-CTL and EAGLE (two important languages for expressing temporal requirements in nondeterministic domains) was extended.
Using DECA to Design Automobiles with Affective Features
Hong Peng,Martin G. Helander
Lecture Notes in Engineering and Computer Science , 2007,
Page 1 /52060
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.