scholarly journals Diversification of Fungal Specific Class A Glutathione Transferases in Saprotrophic Fungi

PLoS ONE ◽  
2013 ◽  
Vol 8 (11) ◽  
pp. e80298 ◽  
Author(s):  
Yann Mathieu ◽  
Pascalita Prosper ◽  
Frédérique Favier ◽  
Luc Harvengt ◽  
Claude Didierjean ◽  
...  
Keyword(s):  
Glutathione Transferases ◽  
Specific Class ◽  
Saprotrophic Fungi ◽  
Class A

scholarly journals Primary structure of OXA-3 and phylogeny of oxacillin-hydrolyzing class D beta-lactamases.

1995 ◽  
Vol 39 (4) ◽  
pp. 887-893 ◽  
Author(s):  
F Sanschagrin ◽  
F Couture ◽  
R C Levesque
Keyword(s):  
Amino Acids ◽  
Structure And Function ◽  
Amino Acid Sequences ◽  
Specific Class ◽  
Conserved Motifs ◽  
Beta Lactamases ◽  
Class A ◽  
Class D ◽  
And Function ◽  
Conserved Amino Acids

We determined the nucleotide sequence of the blaOXA-3(pMG25) gene from Pseudomonas aeruginosa. The bla structural gene encoded a protein of 275 amino acids representing one monomer of 31,879 Da for the OXA-3 enzyme. Comparisons between the OXA-3 nucleotide and amino acid sequences and those of class A, B, C, and D beta-lactamases were performed. An alignment of the eight known class D beta-lactamases including OXA-3 demonstrated the presence of conserved amino acids. In addition, conserved motifs composed of identical amino acids typical of penicillin-recognizing proteins and specific class D motifs were identified. These conserved motifs were considered for possible roles in the structure and function of oxacillinases. On the basis of the alignment and identity scores, a dendrogram was constructed. The phylogenetic data obtained revealed five groups of class D beta-lactamases with large evolutionary distances between each group.

scholarly journals On matroids that are transversal and cotransversal

2021 ◽  
Author(s):  
◽  
Meenu Mariya Jose
Keyword(s):  
Finite Field ◽  
Lattice Path ◽  
Specific Class ◽  
Interesting Phenomenon ◽  
Class A ◽  
Polynomial Time Algorithms ◽  
Undecidable Theory ◽  
Decidable Theories ◽  
Np Complete ◽  
Branch Width

<p>There are distinct differences between classes of matroids that are closed under principal extensions and those that are not Finite-field-representable matroids are not closed under principal extensions and they exhibit attractive properties like well-quasi-ordering and decidable theories (at least for subclasses with bounded branch-width). Infinite-field-representable matroids, on the other hand, are closed under principal extensions and exhibit none of these behaviours. For example, the class of rank-3 real representable matroids is not well-quasi-ordered and has an undecidable theory. The class of matroids that are transversal and cotransversal is not closed under principal extensions or coprincipal coextentions, so we expect it to behave more like the class of finite-field-representable matroids. This thesis is invested in exploring properties in the aforementioned class. A major idea that has inspired the thesis is the investigation of well-quasi-ordered classes in the world of matroids that are transversal and cotransversal. We conjecture that any minor-closed class with bounded branch-width containing matroids that are transversal and cotransversal is well-quasi-ordered. In Chapter 8 of the thesis, we prove this is true for lattice-path matroids, a well-behaved class that falls in this intersection. The general class of lattice-path matroids is not well-quasi-ordered as it contains an infinite antichain of so-called ‘notch matroids’. The interesting phenomenon that we observe is that this is essentially the only antichain in this class, that is, any minor-closed family of lattice-path matroids that contains only finitely many notch matroids is well-quasi-ordered. This answers a question posed by Jim Geelen.  Another question that drove the research was recognising fundamental transversal matroids, since these matroids are also cotransversal. We prove that this problem in general is in NP and conjecture that it is NP-complete. We later explore this question for the classes of lattice-path and bicircular matroids. We are successful in finding polynomial-time algorithms in both classes that identify fundamental transversal matroids. We end this part by investigating the intersection of bicircular and cobicircular matroids. We define a specific class - whirly-swirls - and conjecture that eventually any matroid in the above mentioned intersection belongs to this class.</p>

Integrating Mechatronics Into an Engineering Technology Curriculum

2010 ◽  
Author(s):  
Joseph P. Fuehne
Keyword(s):  
Complex System ◽  
Control Valve ◽  
Fluid Power ◽  
Specific Class ◽  
Technology Curriculum ◽  
Engineering Technology ◽  
Class A ◽  
Directional Control ◽  
The Individual ◽  
Directional Control Valve

Mechatronics can be defined as a science combining mechanical elements, electrical elements, fluid power, and computer programming in a complex system to accomplish a certain task, such as the assembly of a hydraulic directional control valve. In the Mechanical Engineering Technology curriculum at Purdue University in Columbus, Indiana, all of these topics are addressed in individual classes but rarely are they considered together in a complex system. Mechatronics has been the vehicle to allow students to investigate a complete system, rather than simply individual elements or topics. In particular, a system that utilizes seven different machines, each controlled by programmable logic controllers, to assemble a directional control valve is employed to present these topics to students. In the absence of a specific class that might be called Mechatronics (a new class is being considered), the operations of the directional control valve assembly are being integrated into several classes including a first-semester class as a way to demonstrate some real-world manufacturing activities to new students who might otherwise become disinterested due to the math, English, and other related courses in the first year. As such, the mechatronics equipment serves as a retention tool. Additionally, the mechatronics system is used in a basic electricity class, a fluid power class, a machine elements class and, finally, an instrumentation and process control class, where all the individual elements are considered in the system. All of these integrating elements are considered in this work.

scholarly journals On matroids that are transversal and cotransversal

2021 ◽  
Author(s):  
◽  
Meenu Mariya Jose
Keyword(s):  
Finite Field ◽  
Lattice Path ◽  
Specific Class ◽  
Interesting Phenomenon ◽  
Class A ◽  
Polynomial Time Algorithms ◽  
Undecidable Theory ◽  
Decidable Theories ◽  
Np Complete ◽  
Branch Width

<p>There are distinct differences between classes of matroids that are closed under principal extensions and those that are not Finite-field-representable matroids are not closed under principal extensions and they exhibit attractive properties like well-quasi-ordering and decidable theories (at least for subclasses with bounded branch-width). Infinite-field-representable matroids, on the other hand, are closed under principal extensions and exhibit none of these behaviours. For example, the class of rank-3 real representable matroids is not well-quasi-ordered and has an undecidable theory. The class of matroids that are transversal and cotransversal is not closed under principal extensions or coprincipal coextentions, so we expect it to behave more like the class of finite-field-representable matroids. This thesis is invested in exploring properties in the aforementioned class. A major idea that has inspired the thesis is the investigation of well-quasi-ordered classes in the world of matroids that are transversal and cotransversal. We conjecture that any minor-closed class with bounded branch-width containing matroids that are transversal and cotransversal is well-quasi-ordered. In Chapter 8 of the thesis, we prove this is true for lattice-path matroids, a well-behaved class that falls in this intersection. The general class of lattice-path matroids is not well-quasi-ordered as it contains an infinite antichain of so-called ‘notch matroids’. The interesting phenomenon that we observe is that this is essentially the only antichain in this class, that is, any minor-closed family of lattice-path matroids that contains only finitely many notch matroids is well-quasi-ordered. This answers a question posed by Jim Geelen.  Another question that drove the research was recognising fundamental transversal matroids, since these matroids are also cotransversal. We prove that this problem in general is in NP and conjecture that it is NP-complete. We later explore this question for the classes of lattice-path and bicircular matroids. We are successful in finding polynomial-time algorithms in both classes that identify fundamental transversal matroids. We end this part by investigating the intersection of bicircular and cobicircular matroids. We define a specific class - whirly-swirls - and conjecture that eventually any matroid in the above mentioned intersection belongs to this class.</p>

Important Compounds in the Cocaine Class: A Synthesis Overview

1991 ◽  
Author(s):  
F.I. Carroll ◽  
◽  
Anita H. Lewin
Keyword(s):  
Class A

DISTRIBUIÇÃO DA EVAPORAÇÃO EM ESTUFA PLÁSTICA NA PRIMAVERA

Irriga ◽  
2001 ◽  
Vol 6 (3) ◽  
pp. 120-127
Author(s):  
Reginaldo Ferreira Santos ◽  
Antonio Evaldo Klar
Keyword(s):  
Spatial Variability ◽  
Pan Evaporation ◽  
Spring Season ◽  
Class A ◽  
Agricultural Sciences ◽  
E Mail ◽  
Center Area ◽  
Class A Pan

DISTRIBUIÇÃO DA EVAPORAÇÃO EM ESTUFA PLÁSTICA NA PRIMAVERA  Reginaldo Ferreira SantosCentro de Ciências Exatas e Tecnológica da UNIOESTE- CP 711CEP 858114-110, Cascavel, PR - Fone: 0XX45 2203155.  E-mail: [email protected] Evaldo KlarDepartamento de Engenharia Rural - Faculdade de Ciências Agronômica- UNESP - CEP 18603-970 - Botucatu, SP. CP: 237.  E-mail:  [email protected]  1  RESUMO O presente trabalho teve como objetivo avaliar a distribuição da evaporação no interior de uma estufa plástica, com uma cultura de pimentão, através da variabilidade espacial e comparar a evaporação dos microevaporímetros com os valores do Tanque classe "A". O experimento foi conduzido no Campus da Universidade Estadual Paulista - FCA/UNESP, no período de primavera, em estufa plástica de polietileno de baixa densidade (PEBD). Na distribuição da evaporação em estufa com orientação norte/sul, verificou-se que as maiores evaporações ocorreram nas extremidades sul e norte tendente ao lado oeste. Já as menores evaporações localizaram-se no centro. No período de primavera, a evaporação média nos microevaporímetros superestimou em 55% a evaporação determinada no Tanque classe "A". UNITERMOS: evaporação, geoestatística, estufa.  SANTOS, R.F, KLAR, A.E.  EVAPORATION DISTRIBUTION INSIDE A PLASTIC TUNNEL IN THE SPRING SEASON  2  ABSTRACT                 The main aim of this study was to verify the evaporation distribution inside a plastic tunnel, with pepper crop, oriented to north/south, through spatial variability and to compare Class A Pan evaporation to punctual evaporations of 40 equidistant microevaporimeters placed from 50cm the soil. The study was carried out at the College of Agricultural Sciences/UNESP, Botucatu – SP in the spring season.  The highest evaporation occurred next to north and to south sides of the tunnel, with tendency to west. Consequently, the lowest evaporations occurred at the center area. The microevaporimeter evaporations were 55% higher than those obtained from Class A Pan. KEYWORDS: evaporation distribution, microevaporimeter.

Specific class II histocompatibility gene polymorphism in BB rats

Diabetes ◽  
1984 ◽  
Vol 33 (7) ◽  
pp. 700-703 ◽  
Author(s):  
J. B. Buse ◽  
A. Ben-Nun ◽  
K. A. Klein ◽  
G. S. Eisenbarth ◽  
J. G. Seidman ◽  
...  
Keyword(s):  
Gene Polymorphism ◽  
Class Ii ◽  
Specific Class ◽  
Bb Rats
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