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Reducing the Size of Extended Gemmating P Systems [chapter]

Erzsébet Csuhaj-Varjú, György Vaszil
2005 Lecture Notes in Computer Science  
In the case of gemmating P systems with only pre-dynamical rules, we prove that four membranes are sufficient to generate any recursively enumerable language.  ...  We show that systems with metapriority relations and without (in/out) communication rules generate any recursively enumerable language with three membranes, thus we present an optimal result on the necessary  ...  Gemmating P systems are with simple membrane structures, where the skin membrane contains only elementary membranes with string objects which correspond to proteins or any other structured bigger substances  ... 
doi:10.1007/978-3-540-31837-8_18 fatcat:t3ut6seqrrdg7j6t5vljbdafkm

AN APPROACH TO MEMBRANE COMPUTING UNDER INEXACTITUDE

JAUME CASASNOVAS, JOE MIRÓ, MANUEL MOYÀ, FRANCESC ROSSELLÓ
2004 International Journal of Foundations of Computer Science  
We prove that these fuzzy membrane systems generate exactly the recursively enumerable finite-valued fuzzy subsets of N.  ...  In this paper we introduce a fuzzy version of symport/antiport membrane systems.  ...  A membrane structure µ is a finite rooted tree whose nodes are called membranes.  ... 
doi:10.1142/s0129054104002789 fatcat:p75lbrosnrg6zl4elcoxmhtene

Page 3348 of Mathematical Reviews Vol. , Issue 2001E [page]

2001 Mathematical Reviews  
Summary: “Membrane computing is a recently introduced area of molecular computing where a computation takes place in a membrane structure where multisets of objects evolve according to given rules (they  ...  A new computing device, called a P system, based on the notion of a membrane structure is introduced where the membrane struc- ture is defined as the language with a certain restriction over the 68 COMPUTER  ... 

An approach to membrane computing under inexactitude [article]

Jaume Casasnovas, Joe Miro, Manuel Moya, Francesc Rossello
2004 arXiv   pre-print
We prove that these fuzzy membrane systems generate exactly the recursively enumerable finite-valued fuzzy sets of natural numbers.  ...  In this paper we introduce a fuzzy version of symport/antiport membrane systems.  ...  A membrane structure µ is a finite rooted tree whose nodes are called membranes.  ... 
arXiv:cs/0403027v2 fatcat:wukeyjuin5hd5anjzttdesta5u

Is advanced Coupling Methods best fitted in Biosensing of Microparticles?

Alexander E Berezin
2017 Archives of Biotechnology and Biomedicine  
The review is depicted the perspectives to use coupling methods for MP measurement and structure assay.  ...  There are several methods that currently used for the detection of number and characterization of structure and features of MPs.  ...  detected and enumerated as MPs.  ... 
doi:10.29328/journal.hjb.1001005 fatcat:j4nacmc4avhq7ke6inwog4nqqi

Cell envelope damage in Escherichia coli caused by short-term stress in water

S K Zaske, W S Dockins, G A McFeters
1980 Applied and Environmental Microbiology  
Growth in a selective medium containing this compound can be used as an index of structural damage to the membrane (4).  ...  FIG. 1 . 1 Enumeration of E. coli stressed in vessels of reagent grade water.  ... 
pmid:7008696 pmcid:PMC291586 fatcat:sgcxsnnigzdzzam2wfhokgr7yy

Comparison of the new millipore HC with conventional membrane filters for the enumeration of fecal coliform bacteria

B L Green, E Clausen, W Litsky
1975 Applied microbiology  
Fecal coliform recoveries were determined for six types of membrane filters using 65 nonchlorinated water samples.  ...  Results showed that the membranes could be ranked in order of decreasing recovery as follows: Millipore HC greater than Gelman greater than Johns-Manville approximately Sartorius greater than Millipore  ...  The optimum membrane structure was found to have a 2.4-pum surface opening size and a retention pore size of 0.7 pum.  ... 
pmid:1103735 pmcid:PMC187250 fatcat:st7ht7ljajgnfnngumcpx4zmoi

Comparison of Surface Pore Morphology of Two Brands of Membrane Filters

Jon H. Standridge
1976 Applied and Environmental Microbiology  
Recently Sladek et al. (6) presented a pore morphology explanation in which they concluded that the surface structure of the membrane is the primary factor in fecal coliform recovery.  ...  Over the last several years, the membrane filter (MF) technique for enumeration of coliforms in water has been adopted by most laboratories involved in this type of analysis in the United States.  ...  (6) presented a pore morphology explanation in which they concluded that the surface structure of the membrane is the primary factor in fecal coliform recovery.  ... 
doi:10.1128/aem.31.2.316-319.1976 fatcat:2ifqlc24srgybm73onxxy7wvhe

Coupling Analytical Methods for Detection of Microparticles: The Possibilities for Improvement

Alexander E Berezin
2017 Journal of Biotechnology & Biomaterials  
The review depicts the perspectives of using coupling methods for MP measurement and structure assay.  ...  There are several methods that are currently used for the detection of the numbers and the characterization of structure of MPs.  ...  be detected and enumerated as MPs.  ... 
doi:10.4172/2155-952x.1000257 fatcat:z6fuhc3qdbfcthlil3hmuyhk2e

Comparison of nine brands of membrane filter and the most-probable-number methods for total coliform enumeration in sewage-contaminated drinking water

R S Tobin, P Lomax, D J Kushner
1980 Applied and Environmental Microbiology  
for total coliform enumeration in simulated sewage-contaminated tap water.  ...  A comparison was made of the species enumerated by these methods; in general the two methods enumerated a similar spectrum of organisms, with some indication that the MF method was subject to greater interference  ...  recoveries enumerated from two to four times more coliforms than the membranes with the lowest recoveries.  ... 
pmid:7469407 pmcid:PMC291551 fatcat:l7tinw4gdjeqzp5gcaoyqjl46i

Page 478 of Western Journal of Medicine and Surgery Vol. 4, Issue [page]

1845 Western Journal of Medicine and Surgery  
and important in their influence, both in health and disease, but need not, it is thought, be enumerated in the present connection.  ...  Let it sutfice to remark, as wor- thy of ali attention, that the structure and functions of the mucous membranes, and those of the skin are related by an- alogies which are close and important, and which  ... 

Page 368 of Archives of Pathology & Laboratory Medicine Vol. 11, Issue 3 [page]

1931 Archives of Pathology & Laboratory Medicine  
Their physical structure may be altered and their action modified by changes in hydro- gen ion concentration, by the anions and cations enumerated in the Hofmeister series and by adsorption of substances  ...  The membranes themselves are probably made up of hydrophil colloids and would accordingly be sensitive to all the factors just enumerated.  ... 

Comparison of surface pore morphology of two brands of membrane filters

J H Standridge
1976 Applied and Environmental Microbiology  
The surface pore morphology of two brands of membrane filters was studied by using scanning electron microscopy.  ...  (6) presented a pore morphology explanation in which they concluded that the surface structure of the membrane is the primary factor in fecal coliform recovery.  ...  Over the last several years, the membrane filter (MF) technique for enumeration of coliforms in water has been adopted by most laboratories involved in this type of analysis in the United States.  ... 
pmid:16345151 pmcid:PMC169766 fatcat:c4yqra5strckvptdxiu5zif2qi

Direct Antimicrobial Activity of IFN-β

Amber Kaplan, Michelle W. Lee, Andrea J. Wolf, Jose J. Limon, Courtney A. Becker, Minna Ding, Ramachandran Murali, Ernest Y. Lee, George Y. Liu, Gerard C. L. Wong, David M. Underhill
2017 Journal of Immunology  
Remaining bacteria were serially diluted and plated for enumeration. (B) Mouse and human IFN-b were compared at the nucleic acid, amino acid, and structural levels.  ...  Remaining bacteria were serially diluted and plated for enumeration.  ... 
doi:10.4049/jimmunol.1601226 pmid:28411186 pmcid:PMC5469413 fatcat:wlxm2lnlt5fkrgguvx5uv7x7r4

Further Results on Languages of Membrane Structures [article]

Rama Raghavan, H. Ramesh, Marian Gheorghe, Shankara Narayanan Krishna
2011 arXiv   pre-print
P systems with active membranes were used to generate languages, in the sense of languages associated with the structure of membrane systems.  ...  This leads us to characterizations of recursively enumerable languages.  ...  For each of these approaches, characterizations of recursively enumerable languages were provided based on P systems that use different sets of operations for modifying the membrane structure.  ... 
arXiv:1108.3431v1 fatcat:tazoia2tabd3hobb5besuj5he4
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