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Search Results: 1 - 10 of 31585 matches for " PEI Su-rui "
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Effects of Acute Sulfide Stress on the Survival, Immune Responses and Antioxidant Defense System of Macrobrachium nipponense

GUAN Yue-qiang,PEI Su-rui,LI Ze-jian,

水生态学杂志 , 2011,
Abstract: 日本沼虾(Macrobrachium nipponense)在硫化物浓度为0.4、1.2和4.0 mg/L的水体中暴露48 h,研究硫化物胁迫对其血液免疫指标和机体抗氧化能力的影响.结果表明,硫化物对日本沼虾的24、48、72、96 h LC50分别为22.5、15.2、12.5、11.35 mg/L.血细胞密度(THC)和吞噬活力(吞噬百分比和吞噬指数)随硫化物质量浓度升高而降低,至48 h,0.4、1.2和4.0 mg/L组的THC显著降低,分别为对照组的85.71%、70.75%和57.48%.各试验组沼虾的凝血时间与对照组相比延长,1.2 mg/L和4.0 mg/L组分别从12 h和6h开始显著长于对照组(P<0.05).沼虾肌肉中的总抗氧化能力( T-AOC)随硫化物浓度的升高而降低,至48 h,1.2 mg/L和4.0 mg/L组显著低于对照组(P<0.05).超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活力随硫化物浓度的升高而增强,至48 h,1.2 mg/L和4.0 mg/L组的SOD活力显著高于对照组(P<0.05),表明日本沼虾免疫系统对低浓度硫化物有一定的耐受力;当硫化物浓度过高时,沼虾的免疫能力降低,对机体抗氧化系统产生显著影响.
Research on Blanket Jamming to Beidou Navigation Signals Based on BOC Modulation  [PDF]
Pei Wang, Xiaochun Lu, Rui Wang
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2016, DOI: 10.4236/ijcns.2016.95012
Abstract: Aiming at the issue of influence of blanket jamming on performances of Beidou navigation signals, through studying Beidou signals based on the BOC modulation technology, establishing a blanket jamming mathematical model, and performing modeling and simulation on multiple jamming technologies, to attain the jamming curves of time domains and frequency domains of Beidou signals, and the correlation curve of the signal-to-jamming rate and the bit error rate under blanket jamming, and thus realizing evaluation on the jamming performance.

SU Pei-Xi AN Li-Zhe MA Rui-Jun,LIU Xin-Min,

植物生态学报 , 2005,
Abstract: 为了探讨梭梭(Haloxylon ammodendron)和沙拐枣(Calligonum mongolicum)适应高温强光荒漠环境的光合作用机构及特征,通过对其同化枝的解剖结构观察,δ13C值分析,以及气体交换测定表明:二者均具有花环结构(Kranz anatomy),肉细胞(Mesophyll cell)呈栅栏状,其内侧是维管束鞘细胞(Bundle sheath cell),小维管束与维管束鞘细胞相接.在栅栏组织和贮水组织中,梭梭具有形状巨大的含晶细胞;沙拐枣具有大量的粘液细胞.梭梭和沙拐枣同化枝的δ13C值分别为-14.3‰和-14.8‰,在不同生长季节和土壤水分条件下,二者的δ13C值变化在-14‰到-16‰之间.梭梭和沙拐枣的CO2补偿点分别为2 μmol·mol-1和4μmol·mol-1,光饱和点分别为1660和1756 μmol·m-2·s-1,表观光合量子效率分别为0.044和0.057 mol CO2·mol-1 photons.这表明,广泛分布于我国荒漠地区的木本植物梭梭和沙拐枣为C4植物,其光合途径不随生长季节和水分条件的变化而改变.
An Identifier-Based Network Access Control Mechanism Based on Locator/Identifier Split  [PDF]
Rui TU, Jinshu SU, Ruoshan KONG
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2009, DOI: 10.4236/ijcns.2009.27072
Abstract: Legacy IP address-based access control has met many challenges, because the network nodes cannot be identified accurately based on their variable IP addresses. “Locator/Identifier Split” has made it possible to build a network access control mechanism based on the permanent identifier. With the support of “Locator/Identifier Split” routing and addressing concept, the Identifier-based Access Control (IBAC) makes net-work access control more accurate and efficient, and fits for mobile nodes’ access control quite well. Moreover, Self-verifying Identifier makes it possible for the receiver to verify the packet sender’s identity without the third part authentication, which greatly reduces the probability of “Identifier Spoofing”.
A High-Accuracy MOC/FD Method for Solving Fractional Advection-Diffusion Equations
Lijuan Su,Pei Cheng
Journal of Applied Mathematics , 2013, DOI: 10.1155/2013/648595
A Weighted Average Finite Difference Method for the Fractional Convection-Diffusion Equation
Lijuan Su,Pei Cheng
Advances in Mathematical Physics , 2013, DOI: 10.1155/2013/129404
Abstract: A weighted average finite difference method for solving the two-sided space-fractional convection-diffusion equation is given, which is an extension of the weighted average method for ordinary convection-diffusion equations. Stability, consistency, and convergence of the new method are analyzed. A simple and accurate stability criterion valid for this method, arbitrary weighted factor, and arbitrary fractional derivative is given. Some numerical examples with known exact solutions are provided. 1. Introduction The history of the fractional derivatives and integrals can date back to the 17th century. However, only after 124 years later, Lacroix first put forward a result of the simplest fractional calculus. Nowadays, the fractional derivatives and integrals have many important applications in various fields of physics [1–3], finance [4, 5], hydrology [6], engineering [7], mathematics [8], science, and so forth. Anomalous diffusion is perhaps the most frequently studied complex problem. Classical (integer-order) partial differential equation of diffusion and wave has been extended to the equation with fractional time and/or space by means of fractional operator [9]. Furthermore, it has been extended to the problems of every kind of nonlinear fractional differential equations, and to present the solutions to the problems of initial and boundary values subject to above equations is another rapidly developing field of fractional operator applications. In general, all of these equations have important background of practice applications, such as dispersion in fractals and porous media [10], semiconductor, turbulence, and condensed matter physics. As a special case of anomalous diffusion, the two-sided space-fractional convection-diffusion equation for the force-free case is usually written in the following way [11]: where is the drift of the process, that is, the mean advective velocity, is the order of fractional differentiation, , , is the coefficient of dispersion, and indicates the relative weight of forward versus backward transition probability. The function is the initial condition, the boundary conditions are zero Dirichlet boundary conditions, and the function is a source/sink term. The and in (1) are the Riemann-Liouville fractional derivatives. Equation (1) is a special case of the space-fractional Fokker-Planck equation, which more adequately describes the movement of solute in an aquifer than the traditional second-order Fokker-Planck equation. The left-sided (+) and the right-sided (?) fractional derivatives in (1) are the Riemann-Liouville
An Intron Mutation in the ACVRL1 May Be Associated with a Transcriptional Regulation Defect in a Chinese Family with Hereditary Hemorrhagic Telangiectasia
Qian Yu, Xiao-hui Shen, Ying Li, Rui-juan Li, Ji Li, Yun-ya Luo, Su-fang Liu, Ming-yang Deng, Min-fei Pei, Guang-sen Zhang
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0058031
Abstract: Purpose To identify a novel pathogenic gene mutation present in a Chinese family with hereditary hemorrhagic telangiectasia (HHT) and to determine if an intron mutation may influence the transcriptional activity of the ACVRL1 gene. Methods HHT family members were ascertained following the presentation of proband and involved subjects. All family members (n = 5) and 113 healthy individuals were genotyped for the variant in intron 6 c.772+27G>C of ACVRL1 gene. The genomic structure of ACVRL1 in affected HHT patients and healthy individuals was determined by long range PCR and sequencing. The expression of ACVRL1 mRNA and protein in patients with HHT was evaluated using real-time polymerase chain reaction and immunoblot analysis. Luciferase activity assay and electrophoretic mobility shift assay (EMSA) were performed to uncover the mechanism of intron-related transcriptional regulation. Results Only one novel mutation in intron 6 (c.772+27G>C) of ACVRL1 gene, no other mutation, abnormal splice, gross genomic deletion or rearrangement was found in this HHT2 family. Compared with healthy individuals, ACVRL1 mRNA and protein were significantly decreased in affected HHT2 individuals. Luciferase activity assay demonstrated that the transcriptional activity of the mutated ACVRL1 was significantly lower than that of the wild-type of intron 6; EMSA results showed that intron 6 c.772+27G>C mutation was able to inhibit the binding of transcriptional factor Sp1. Conclusions A novel intron mutation in ACVRL1 gene is associated with familial HHT2. The mechanisms may be involved in the down-regulation of ACVRL1 gene transcription.
Inhibitory Effects of Several Spices on Inflammation Caused by Advanced Glycation Endproducts  [PDF]
Su-Chen Ho, Pei-Wen Chang
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.327118
Abstract: Advanced glycation endproducts (AGEs) is implicated in the pathogenesis of diabetic complications. Inhibiting the formation of AGEs and interfering with AGEs-mediated inflammation are two practicable strategies for developing a dietary adjuvant against diabetic complications. This study evaluated the protective capacities against diabetic complications of several spices based on their inhibition of the formation of AGEs in an in vitro BSA/glucose system and on the AGEs-induced production of proinflammatory cytokine in RAW 264.7 macrophages. Among the tested spices, cinnamon exhibited most strongly inhibited both the formation of AGEs and the AGEs-induced production of nitric oxide, interleukin-6 and tumor necrosis factor-α. Additionally, correlative results revealed that the capacity of spices to inhibit the formation of AGEs is attributable to phenolic compounds and, in contrast, the capacity to inhibit AGEs-induced inflammation is attributable to condensed tannin. This investigation demonstrates the potential of cinnamon to serve as a dietary adjuvant against diabetic complications.
Affine walled Brauer algebras
Hebing Rui,Yucai Su
Mathematics , 2013,
Abstract: A new class of associative algebras referred to as affine walled Brauer algebras are introduced. These algebras are free with infinite rank over a commutative ring containing 1. Then level two walled Brauer algebras over C are defined, which are some cyclotomic quotients of affine walled Brauer algebras. We establish a super Schur-Weyl duality between affine walled Brauer algebras and general linear Lie superalgebras, and realize level two walled Brauer algebras as endomorphism algebras of tensor modules of Kac modules with mixed tensor products of the natural module and its dual over general linear Lie superalgebras, under some conditions. We also prove the weakly cellularity of level two walled Brauer algebras, and give a classification of their irreducible modules over C. This in tur enables us to classify the indecomposable direct summands of the said tensor modules.
Highest weight vectors of mixed tensor products of general linear Lie superalgebras
Hebing Rui,Yucai Su
Mathematics , 2014,
Abstract: In this paper, a notion of cyclotomic (or level $k$) walled Brauer algebras $\mathscr B_{k, r, t}$ is introduced for arbitrary positive integer $k$. It is proven that $\mathscr B_{k, r, t}$ is free over a commutative ring with rank $k^{r+t}(r+t)!$ if and only if it is admissible. Using super Schur-Weyl duality between general linear Lie superalgebras $\mathfrak{gl}_{m|n}$ and $\mathscr B_{2, r, t}$, we give a classification of highest weight vectors of $\mathfrak{gl}_{m|n}$-modules $M_{pq}^{rt}$, the tensor products of Kac-modules with mixed tensor products of the natural module and its dual. This enables us to establish an explicit relationship between $\mathfrak{gl}_{m|n}$-Kac-modules and right cell (or standard) $\mathscr B_{2, r, t}$-modules over $\mathbb C$. Further, we find an explicit relationship between indecomposable tilting $\mathfrak{gl}_{m|n}$-modules appearing in $M_{pq}^{rt}$, and principal indecomposable right $\mathscr B_{2, r, t}$-modules via the notion of Kleshchev bipartitions. As an application, decomposition numbers of $\mathscr B_{2, r, t}$ arising from super Schur-Weyl duality are determined.
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