Exclusion process

In this project, traffic simulation according to the cellular automaton of the Nagel-Schreckenberg model (1992) with different boundary conditions. The sudden occurrence of traffic jams is successfully realised as well as boundary induced phases and phase transitions are observed in the Asymmetric Simple Exclusion Process. The extension to the Velocity Dependent Randomization model leads to metastabile high flow states and hysteresis of the flow. The impact of speed limits on the probability of the formation of traffic jams is investigated.

10p nguyenhaisu 07-08-2015 45 3   Download

Laboratory for Phytopathology and Plant Protection, Katholieke Universiteit Leuven, Belgium; 2Institut de Pharmacologie et Biologie Structurale, UMR-CNRS 5089, Toulouse Cedex, France; 3Rega Institute, Laboratory of Molecular Immunology, Katholieke Universiteit Leuven, Belgium Fruits of elderberry (Sambucus nigra) express small quantities of a type-2 ribosome-inactivating protein with an exclusive specificity towards the NeuAc(a2,6)Gal/GalNAc disaccharide and a unique molecular structure typified by the occurrence of a disulfide bridge between the B-chains of two adjacent protomers....

10p system191 01-06-2013 40 3   Download

ThemaltoseATP-binding cassette transporter ofSalmonella typhimurium is composed of a membrane-associated com-plex (MalFGK2) and a periplasmic receptor (MalE). In addition to its role in transport, the complex acts as a repressor ofmaltose-regulatedgene expressionand is subject to inhibition in the process of inducer exclusion. These activities are thought to be mediated by interactions of the ATPase subunit, MalK, with the transcriptional activator, MalT, and nonphosphorylated enzyme IIA of the glucose phosphotransferase system, respectively. ...

12p research12 23-04-2013 35 3   Download

Integrase (IN) is the retroviral enzyme responsible for the integration of the DNA copy of the retroviral genome into the host cellDNA. TheC-terminal domainof INis involved in DNA binding and enzyme multimerization. We previ-ously performed single amino acid substitutions in the C-terminal domain of the avian leukemia and sarcoma vir-uses (ALSV) IN [Moreauet al. (2002). Arch. Virol.147, 1761–1778].

13p fptmusic 12-04-2013 42 4   Download

The guanidinium chloride- and urea-induced unfolding of FprA, a mycobacterium NADPH-ferredoxin reductase, was examined in detail using multiple spectroscopic techniques, enzyme activity measurements and size exclusion chromatography. The equilibrium unfolding of FprA by urea is a cooperative process where no stabilization of any partially folded inter-mediate of protein is observed. In comparison, the unfolding of FprA by guanidinium chloride proceeds through intermediates that are stabilized by interaction of protein with guanidinium chloride. ...

0p awards 05-04-2013 36 3   Download

Bacterial phytochromes (Bphs) are ancestors of the well characterized plant photoreceptors. Whereas plant phyto-chromes perform their photoisomerization exclusively via a covalently bound bilin chromophore, Bphs are variable in their chromophore selection. This is demonstrated in the cyanobacterium CalothrixPCC7601 that expresses two Bphs, CphA and CphB. CphA binds phycocyanobilin (PCB) covalently, whereas CphB, lacking the covalently binding cysteine of the plant phytochromes, carries biliver-din IXa (BV) as the chromophore....

10p dell39 03-04-2013 43 3   Download

Eukaryotic chromosomal DNA is densely packaged in the nucleus and organized into discrete domains of active and inactive chromatin. Gene loci that are activated during the process of cell differentiation undergo changes that result in modifications of specific histone tail residues and in loosening of chromatin structure. Theb-globin genes are expressed exclusively in eryth-roid cells.

10p dell39 27-03-2013 48 6   Download

As an effort to elucidate the quaternary structure of cyclomaltodextrinase I-5 (CDase I-5) as a function of pH and salt concentration, the dissoci-ation/association processes of the enzyme were investigated under various pH and salt conditions. Previous crystallographic analysis of CDase I-5 indicated that it existed exclusively as a dodecamer at pH 7.0, forming an assembly of six 3D domain-swapped dimeric subunits.

13p dell39 27-03-2013 28 4   Download

Ticks feed exclusively on blood to obtain their nutrients, but the gene products that mediate digestion processes in ticks remain unknown. We report the molecular characterization and possible function of a serine carboxypeptidase (HlSCP1) identified in the midgut of the hard tickHaem-aphysalis longicornis.

14p galaxyss3 19-03-2013 35 2   Download

We prove that the diffusion coefficient for the two dimensional asymmetric simple exclusion process with nearest-neighbor-jumps diverges as (log t)2/3 to the leading order. The method applies to nearest and non-nearest neighbor asymmetric simple exclusion processes. 1. Introduction The asymmetric simple exclusion process is a Markov process on {0, 1}Z with asymmetric jump rates. There is at most one particle allowed per site and thus the word exclusion. The particle at a site x waits for an exponential time and then jumps to y with rate p(x − y) provided that the site is not occupied. ...

30p tuanloccuoi 04-01-2013 53 6   Download

Event Ordering Mutual Exclusion Atomicity Concurrency Control Deadlock Handling Election Algorithms Reaching Agreement To describe various methods for achieving mutual exclusion in a distributed system To explain how atomic transactions can be implemented in a distributed system To show how some of the concurrency-control schemes discussed in Chapter 6 can be modified for use in a distributed environment To present schemes for handling deadlock prevention, deadlock avoidance, and deadlock detection in a distributed system...

54p perpan 02-09-2012 64 11   Download

History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security History Linux is a modem, free operating system based on UNIX standards. First developed as a small but self-contained kernel in 1991 by Linus Torvalds, with the major design goal of UNIX compatibility. Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet.

10p kanguru_91 28-09-2010 140 22   Download

Size-exclusion chromatography (SEC) separates polymer molecules and biomolecules based on differences in their molecular size. The separation process in simplified form is based on the ability of sample molecules to penetrate inside the pores of packing material and is dependent on the relative size of analyte molecules and the respective pore size of the absorbent. The process also relies on the absence of any interactions with the packing material surface. Two types of SEC are usually distinguished: 1. Gel permeation chromatography (GPC)—separation of synthetic (organic-soluble) polymers.

17p bigbaby87 03-09-2010 102 19   Download

Avoiding Locking Scenarios • Best Practices – Application – Use least restrictive isolation level that maintains the data integrity requirements of the application – Reduce Isolation level of specific statements by using statement level isolation (i.e.

3p hangkute_1 27-08-2010 73 7   Download

In Europe, and more recently in the United States, an increased trend has emerged in the use of autologous blood products in an effort to facilitate healing in a variety of applications. In recent years, scientific research and technology has provided a new perspective on understanding the wound healing process. Initially platelets were thought to act exclusively with clotting.

10p kimlien06121987 26-05-2010 108 8   Download