scholarly journals Coxeter-Knuth Graphs and a Signed Little Map for Type B Reduced Words

10.37236/4384 ◽  
2014 ◽  
Vol 21 (4) ◽  
Author(s):  
Sara Billey ◽  
Zachary Hamaker ◽  
Austin Roberts ◽  
Benjamin Young
Keyword(s):  
Structure Theorem ◽  
Type A ◽  
Axiomatic Characterization ◽  
Schubert Calculus ◽  
Type B ◽  
Dual Equivalence ◽  
Carry Over ◽  
Dual Equivalence Graphs ◽  
Reduced Words

We define an analog of David Little’s algorithm for reduced words in type B, and investigate its main properties. In particular, we show that our algorithm preserves the recording tableau of Kraśkiewicz insertion, and that it provides a bijective realization of the Type B transition equations in Schubert calculus. Many other aspects of type A theory carry over to this new setting. Our primary tool is a shifted version of the dual equivalence graphs defined by Assaf and further developed by Roberts. We provide an axiomatic characterization of shifted dual equivalence graphs, and use them to prove a structure theorem for the graph of Type B Coxeter-Knuth relations. 

scholarly journals A Tale of Two Tiles: Characterization of Floor Tiles from the Nineteenth-Century Akko Tower Shipwreck (Israel)

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1091
Author(s):  
Alexandra Inberg ◽  
Dana Ashkenazi ◽  
Yishai Feldman ◽  
Omri Dvir ◽  
Deborah Cvikel
Keyword(s):  
Secondary Ion Mass Spectrometry ◽  
Raw Materials ◽  
Type A ◽  
Raw Material ◽  
Brown Pigment ◽  
Blue Color ◽  
Type B ◽  
Yellow Color ◽  
Floor Tiles

Fragments of decorated floor tiles were retrieved from the Akko Tower shipwreck, Israel. Most tiles were made of bright brown fired clay with a white glaze decorated with colored stenciled motifs (Type A); and others consisted of a red-brown fired clay body, coated with a brown pigment covered with transparent brown glaze (Type B). This study aimed to characterize the two tile types; to reveal information concerning the manufacturing process; and to determine the origin of their raw material. A multidisciplinary approach was used, including light microscopy, SEM-EDS, electron probe microanalysis with wavelength-dispersive X-ray spectroscopy (EPMA-WDS), XRD, Raman spectroscopy, and time-of-flight secondary ion mass spectrometry (TOF-SIMS) analyses. The characterization of both tile types demonstrated the use of different raw materials. The Type A tiles were covered with tin-opacified majolica glaze and colored with various mixtures of pigments. The blue color was due to pigment rich in cobalt; the yellow color was due to Naples yellow and lead-tin yellow I minerals; and the green, orange, and brown colors were all prepared by mixing the Naples yellow pigment with different minerals. These majolica glaze tiles were probably manufactured in Sicily. The brown coating of the Type B tiles was due to pigment rich in lead and iron minerals. These tiles were produced with different manufacturing processes, and apparently made in France.

A Longitudinal Analysis of Methicillin-ResistantStaphylococcus aureusin a Hong Kong Teaching Hospital

2004 ◽  
Vol 25 (2) ◽  
pp. 126-129 ◽  
Author(s):  
Margaret Ip ◽  
D. J. Lyon ◽  
F. Chio ◽  
A. F. Cheng
Keyword(s):  
Hong Kong ◽  
Teaching Hospital ◽  
Dna Typing ◽  
Type A ◽  
University Teaching ◽  
Pfge Type ◽  
Type B ◽  
Isolation And Characterization ◽  
Surgical Units

AbstractObjectives:To review the incidence and trends of MRSA during a 12-year (1989-2000) period at a university teaching hospital and the relationship between strain distribution by antibiogram and molecular typing.Design:Retrospective review of laboratory-based surveillance records on MRSA isolation and characterization of strains by antimicrobial susceptibility and PFGE. A patient episode was counted at the time when MRSA was first isolated.Setting:A 1,350-bed university teaching hospital in Hong Kong.Patients:Those with clinical isolates of MRSA.Results:During 1989 to 2000, the hospital recorded 1,203,175 deaths and discharges (D&D) and encountered 5,707 patient episodes of new MRSA isolation. The overall incidence of patient episodes of MRSA was 0.47/100 D&D. In 1989, the incidence was 0.81/100 D&D and fell to a low of 0.33/100 D&D in 1995, but then rose to 0.50/100 D&D in 2000. Antibiogram and DNA typing identified 5 major types. PFGE type A constituted 68% (211/312) of isolates and was present throughout the 12-year period. PFGE type B constituted 13% (40/312) of isolates and was only present from 1995 to 2000. These isolates form a distinct clone and had unique antibiotic resistance profiles.Conclusions:The study showed the establishment of a dominant MRSA clone (PFGE type A group) in the intensive care, medical, and surgical units and the appearance of a new MRSA strain in 1995 (PFGE type B), which partly explained the rise in incidence of MRSA cases and a disproportionate rise in MRSA bacteremia from 1995 to 2000.

scholarly journals Mineralogical Characterization of Dolomitic Aggregate Concrete: The Camarasa Dam (Catalonia, Spain)

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 117
Author(s):  
Encarnación Garcia ◽  
Pura Alfonso ◽  
Esperança Tauler
Keyword(s):  
Portland Cement ◽  
Type A ◽  
Alkali Silica Reaction ◽  
Type B ◽  
Mineralogical Characterization ◽  
Group Mineral ◽  
X Ray ◽  
Concrete Type ◽  
Further Development

The Camarasa Dam was built in 1920 using dolomitic aggregate and Portland cement with two different compositions: type A (dolomite and Portland cement) and type B (dolomite and sand-cement). The sand cement was a finely powdered mixture of dolomite particles and clinker of Portland cement. The mineralogy of concrete was studied by optical microscopy, scanning electron microscopy, and x-ray powder diffraction. Reaction of dedolomitization occurred in the two types of concrete of the Camarasa Dam, as demonstrated by the occurrence of calcite, brucite, and/or absence of portlandite. In the type A concrete, calcite, brucite, and a serpentine-group mineral precipitated as a rim around the dolomite grains and in the paste. The rims, a product of the dedolomitization reaction, protected the surface of dolomite from the dissolution process. In type B concrete, in addition to dolomite and calcite, quartz and K-feldspar were present. Brucite occurred in lower amounts than in the type A concrete as fibrous crystals randomly distributed in the sand-cement paste. Although brucite content was higher in the type A concrete, type B showed more signs of loss of durability. This can be attributed to the further development of the alkali-silica reaction in this concrete type.

scholarly journals Morphological Characterization of Tetraploids of Limonium sinuatum (L.) Mill. Produced by Oryzalin Treatment of Seeds

Horticulturae ◽  
2021 ◽  
Vol 7 (8) ◽  
pp. 248
Author(s):  
Shiro Mori ◽  
Masaki Yahata ◽  
Ayano Kuwahara ◽  
Yurina Shirono ◽  
Yasufumi Ueno ◽  
...  
Keyword(s):  
Pollen Grains ◽  
Type A ◽  
Morphological Characterization ◽  
Ornamental Plant ◽  
Type B ◽  
Stomatal Size ◽  
Chimeric Plant ◽  
L1 And L2 ◽  
Polyploidy Breeding

Limonium sinuatum (L.) Mill. (2n = 2x = 16) is a popular ornamental plant with dimorphism of pollen grains (type A and type B) and stigmas (papilla and cob-like). We applied polyploidy breeding to this species in order to introduce desirable traits. Tetraploid and mixoploid L. sinuatum plants were successfully obtained with oryzalin treatment of L. sinuatum ‘Early Blue’ seeds. All three tetraploids had increased leaf width, stomatal size, flower length, and pollen width compared to those of the diploid, and tetraploids had four germinal pores of pollen grains, whereas the diploid had three. All tetraploids had type A pollen grains and cob-like stigmas. Furthermore, the growth of cultivated tetraploid plants was slow, with later bolting and flowering times. Mixoploids Mixo-1 and Mixo-3 were estimated to be polyploidy periclinal chimeric plants consisting of a tetraploid L1 layer and diploid L2 layer, and Mixo-2 was estimated to be a polyploidy periclinal chimeric plant consisting of the diploid L1 layer and tetraploid L2 layer. Mixo-4 had tetraploid L1 and L2 layers. Mixoploids, except Mixo-4, had type A pollen grains and cob-like stigmas, whereas Mixo-4 had type B pollen grains and papilla stigmas. These polyploids will be useful as polyploidy breeding materials.

Processing and characterization of B4C-Al laminated cermets

1990 ◽  
Vol 48 (4) ◽  
pp. 1022-1023
Author(s):  
Mehrdad Yasrebi ◽  
Gyeung H. Kim ◽  
David L. Milius ◽  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Fracture Strength ◽  
Laminated Composites ◽  
Laminated Composite ◽  
Type A ◽  
Type B ◽  
Body Type ◽  
Metal Infiltration

B4C-Al composites show enhanced fracture strength and fracture toughness values over monolithic B4C.1-2 A controlled change in structural morphologies such as lamination further enhances mechanical properties of the composite over the B4C-Al composites processed to form a monolithic morphology. This paper summarizes microstructure-property correlations studied in B4C-Al laminated composites.The laminated composite is formed either by metal infiltration of B4C tapes sandwiched with Al sheets, type (a), (Fig. 1a) or by lamination of B4C tapes of different porosity and then subjected to metal infiltration of the laminated body, type (b), (Fig. 1b). In the first method, after thin tapes of B4C were formed, each tape was individually sintered between polished graphite discs, then layered with Al sheets, and the entire stack was heated to induce infiltration. In the second method, tapes of B4C with different green densities were stacked and laminated under pressure and temperature. The laminated body was then sintered and subsequently infiltrated with Al.

Characterization of N-methylphenylethylamine and N-methylphenylethanolamine as substrates for type A and type B monoamine oxidase

1980 ◽  
Vol 29 (19) ◽  
pp. 2663-2667 ◽  
Author(s):  
Suzuki Osamu ◽  
Oya Masakazu ◽  
Katsumata Yoshinao
Keyword(s):  
Monoamine Oxidase ◽  
Type A ◽  
Type B

scholarly journals Characterization of KPC-Encoding Plasmids from Enterobacteriaceae Isolated in a Czech Hospital

2017 ◽  
Vol 62 (3) ◽  
Author(s):  
Rudolf Kukla ◽  
Katerina Chudejova ◽  
Costas C. Papagiannitsis ◽  
Matej Medvecky ◽  
Katerina Habalova ◽  
...  
Keyword(s):  
Multidrug Resistance ◽  
Type A ◽  
Type B ◽  
Content Type ◽  
Type C ◽  
Derivatives Of

ABSTRACT Ten Enterobacteriaceae isolates collected in a Czech hospital carried bla KPC -positive plasmids of different sizes (∼30, ∼45, and ∼80 kb). Sequencing revealed three types of plasmids (A to C) with the Tn 4401a transposon. Type A plasmids comprised an IncR backbone and a KPC-2-encoding multidrug resistance (MDR) region. Type B plasmids were derivatives of type A plasmids carrying an IncN3-like segment, while type C plasmids were IncP6 plasmids sharing the same KPC-2-encoding MDR region with type A and B plasmids.

Characterization of type A and type B CCK receptor binding sites in rat vagus nerve

1993 ◽  
Vol 623 (1) ◽  
pp. 161-166 ◽  
Author(s):  
Eric S. Corp ◽  
Jennifer McQuade ◽  
Timothy H. Moran ◽  
Gerard P. Smith
Keyword(s):  
Vagus Nerve ◽  
Receptor Binding ◽  
Binding Sites ◽  
Type A ◽  
Type B

Biochemical Characterization of Type A and Type B  -Lactamase from Enterobacter cloacae

1988 ◽  
Vol 10 (4) ◽  
pp. 714-720 ◽  
Author(s):  
R. L. Then ◽  
R. L. Charnas ◽  
H. P. Kocher ◽  
M. Manneberg ◽  
U. Rothlisberger ◽  
...  
Keyword(s):  
Biochemical Characterization ◽  
Enterobacter Cloacae ◽  
Type A ◽  
Type B

scholarly journals A new characterization of a proper type B semigroup

2020 ◽  
Vol 18 (1) ◽  
pp. 1590-1600
Author(s):  
Chunhua Li ◽  
Zhi Pei ◽  
Baogen Xu
Keyword(s):  
Structure Theorem ◽  
Elementary Theory ◽  
Inverse Semigroups ◽  
Type B ◽  
Basic Properties ◽  
Definition Of ◽  
Admissible Triple

Abstract In this paper, we develop the elementary theory of inverse semigroups to the cases of type B semigroups. The main aim of this paper is to study proper type B semigroups. We introduce first the concept of a left admissible triple. After obtaining some basic properties of left admissible triple, we give the definition of a Q-semigroup and get a structure theorem of Q-semigroup. In particular, we introduce the notion of an admissible triple and give some characterization of proper type B semigroups. It is proved that an arbitrary Q-semigroup with an admissible triple is an E-unitary type B semigroup.

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