oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 7 )

2018 ( 45 )

2017 ( 48 )

2016 ( 59 )

Custom range...

Search Results: 1 - 10 of 3244 matches for " Shang Huaming "
All listed articles are free for downloading (OA Articles)
Page 1 /3244
Display every page Item
THE PALEOENVIRONMENTAL SIGNIFICANCE OF ORGANIC CARBON ISOTOPE IN LACUSTRINE SEDIMENTS IN THE ARID CHINA: AN EXAMPLE FROM SANJIAOCHENG PALAEOLAKE IN MINQIN
中国西北干旱区湖泊沉积物中有机质碳同位素组成的环境意义——以民勤盆地三角城古湖泊为例

Zhang Chengjun,Chen Fahu,Shang Huaming,Cao Jie,
张成君
,陈发虎,尚华明,曹洁

第四纪研究 , 2004,
Abstract: 通过对中国西北干旱区石羊河流域民勤盆地三角城古湖泊沉积物有机质碳同位素组成 (δ1 3Corg)分析 ,表明末次冰期与全新世时气候和植被有明显的差异 ,末次冰期δ1 3Corg总体偏轻 (- 30‰~ - 2 5‰ ) ,而全新世碳同位素组成则有较大的变化 ,在早全新世碳同位素组成有多次短期快速变重 (- 1 0‰左右 )的变化 ,中全新世碳同位素组成总体偏重 (- 2 0‰~ - 1 0‰ ) ,晚全新世碳同位素组成偏轻 (- 2 5‰左右 )。分析表明湖泊沉积物有机质碳同位素组成反映了陆生C3植物和湖泊内源水生植物变化的关系 ,末次冰期以来西北干旱区C4 植物不发育 ,偏重的有机质碳同位素值与C4 植物无关。从沉积物中有机质组分、元素等分析表明 ,末次冰期时主要以河流相沉积为主 ,湖泊中有机质主要来源于上游祁连山的陆生C3植物 ,有机碳含量较低 ,表明当时的上游的陆生植被不繁盛 ,区域气候较干冷 ;从全新世开始 ,三角城古湖泊开始形成 ,沉积物中碳同位素组成偏重的有机质主要来源于湖泊中的沉水植物 ,此时湖泊水体较大 ,湖泊生产力较高。而沉积物中有机质碳同位素组成偏轻时期的有机质主要来源于挺水植物、陆生C3植物 ,较低的有机碳含量说明该时期陆生植被不发育 ,气候较干冷 ,湖泊水体较小
On total progeny of multitype Galton-Watson process and the first passage time of random walk with bounded jumps
Wang Huaming
Mathematics , 2012,
Abstract: In this paper, we first form a method to calculate the probability generating function of the total progeny of multitype branching process. As examples, we calculate probability generating function of the total progeny of the multitype branching processes within random walk which could stay at its position and (2-1) random walk. Consequently, we could give the probability generating functions and the distributions of the hitting time of corresponding random walks.
On the slowdown of random walk in random environment with bounded jumps
Wang Huaming
Mathematics , 2013,
Abstract: In this paper we prove that under certain assumptions the transient random walk in random environment with bounded jumps (in $\mathbb{Z}$) grows much slower than the speed $n$. Precisely, there is $0
Diagnostic Value of Combined Detection of Galectin-3 and N-Terminal B-Type Natriuretic Peptide in Patients with Acute Heart Failure  [PDF]
Huaming Zhang, Jinjun Li, Hongyan Han
World Journal of Cardiovascular Diseases (WJCD) , 2018, DOI: 10.4236/wjcd.2018.83020
Abstract: Background: Acute heart failure timely and effective diagnosis and treatment directly affects the prognosis of patients, so early diagnosis of acute heart failure treatment is very important. The current diagnosis of acute heart failure has yet to be further improved. To investigate the relationship between plasma levels of Galectin-3 and NT-proBNP in cardiac structure and function in patients with acute heart failure (AHF) Early detection of failure. Methods: The clinical data of 86 patients with acute heart failure in our hospital were analyzed and followed up. Twenty-six healthy subjects with normal cardiac function were used as control group. The plasma Galectin-3 and NT-proBNP levels were compared between the two groups to observe the value of plasma Galectin-3 combined with NT-proBNP in the diagnosis of acute heart failure. Results: There was no significant difference in the level of Galectin-3 and NT-proBNP between heart function group II and control group, and the levels of cardiac function III and IVG plasma Galectin-3 and NT-proBNP were significantly higher in patients with heart failure Compared with the healthy control group, the patients’ LVEF decreased and their cardiac function increased. The levels of plasma Galectin-3 and NT-proBNP increased significantly (P < 0.01). Multivariate Logistic regression analysis demonstrated that plasma levels of Galectin-3 and NT-proBNP were independent of cardiac function. The area under the ROC curve for the combined detection of plasma Galectin-3 and NT-proBNP was greater than the area under the two alone tests. Conclusion: The combined detection of Galectin-3 and NT-proBNP has high sensitivity and specificity in the diagnosis of acute heart failure and can be used as a new detection mode.
Simple and Selective Colorimetric Detection of Oxytetracycline Based on Fe(III) Ion-3,3’,5,5’-Tetramethylbenzidine  [PDF]
Wenshu Yang, Zhigang Chen, Huaming Li
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.913076
Abstract: Oxytetracycline (OTC) is a common antibacterial agent used for the control of animal diseases. OTC abuse can seriously affect human health. Herein, based on the Fe(III)-3,3’,5,5’-tetramethylbenzidine (Fe(III)-TMB) system, a facile and rapid colorimetricassay for oxytetracycline (OTC) was successfully developed. The addition of OTC could remarkably enhance the Fe(III)-oxidized TMB reaction and the absorbance increase of Fe(III)-TMB solution is proportional to the added OTC. The linear range of proposed sensor for OTC was from 20 nM to 1000 nM with the detection limit of 7.97 nM. The high sensitivity for OTC detection was successfully achieved under optimal conditions. For real sample analysis, recoveries of 89.93% to 100.02% was obtained. This is the first report for detecting OTC based on the nonenzymatic colorimetric reaction using the intrinsic oxidized activity of OTC/Fe3+ complex. The present simple, low-cost and visualized sensor has great potential for OTC detection in food.
Study of System Model of Image Inpainting Combining Subjective Estimation and Impersonal Estimation
Weilan Wang,Huaming Liu
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
Intrinsic branching structure within random walk on $\mathbb{Z}$
Wenming Hong,Huaming Wang
Mathematics , 2010,
Abstract: In this paper, we reveal the branching structure for a non-homogeneous random walk with bounded jumps. The ladder time $T_1,$ the first hitting time of $[1,\infty)$ by the walk starting from $0,$ could be expressed in terms of a non-homogeneous multitype branching process. As an application of the branching structure, we prove a law of large numbers of random walk in random environment with bounded jumps and specify the explicit invariant density for the Markov chain of ``the environment viewed from the particle" .The invariant density and the limit velocity could be expressed explicitly in terms of the environment.
Branching structure for an (L-1) random walk in random environment and its applications
Wenming Hong,Huaming Wang
Mathematics , 2010,
Abstract: By decomposing the random walk path, we construct a multitype branching process with immigration in random environment for corresponding random walk with bounded jumps in random environment. Then we give two applications of the branching structure. Firstly, we specify the explicit invariant density by a method different with the one used in Br\'emont [3] and reprove the law of large numbers of the random walk by a method known as the environment viewed from particles". Secondly, the branching structure enables us to prove a stable limit law, generalizing the result of Kesten-Kozlov-Spitzer [11] for the nearest random walk in random environment. As a byproduct, we also prove that the total population of a multitype branching process in random environment with immigration before the first regeneration belongs to the domain of attraction of some \kappa -stable law.
Analysis of the Energy-Performance Tradeoff for Delayed Mobile Offloading
Huaming Wu,Katinka Wolter
Computer Science , 2015,
Abstract: This paper has been withdrawn by the author
Polymer-Controlled Synthesis of 1-(2-Pyridylazo)-2-Naphthol Hierarchical Architectures  [PDF]
Jie Leng, Qiulin Liao, Yong Gao, Huaming Li
Materials Sciences and Applications (MSA) , 2011, DOI: 10.4236/msa.2011.26074
Abstract: The self-assembly of organic 1-(2-pyridylazo)-2-naphthol (PAN) into hierarchical architectures, such as microfibers, microrods, and sheaflike structures, in solution was successfully achieved by reprecipitation method with the assistance of thermoresponsive diblock copolymer poly(N,N-dimethylacrylamide)-b-poly(N-isopropylacrylamide) (PDMA-b-PNIPAM). It was found that the morphology modification can be readily controlled by varying the polymer concentrations. The optical absorption and fluorescence emission properties of the as-prepared PAN architectures were investigated. Time-dependent spectra of the precipitating solution for sheaflike structures formation were measured to monitor the self-assembly process of PAN molecules. The results showed that the PAN microstructures exhibited intense fluorescence emission, indicating an unusual aggregation-induced emission enhancement (AIEE) phenomenon for PAN, which have great potential for future use in optoelectronic microdevices.
Page 1 /3244
Display every page Item


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