Search results for "type"

Loss of virulence in Ustilago maydis by Umchs6 gene disruption

2003

A gene encoding a sixth chitin synthase (Umchs6, sequence GenBank accession No. AF030554) from the plant pathogenic hemibasidiomycete Ustilago maydis (DC.) Cda. was isolated and characterized. The predicted protein is 1103 amino acids in length with a calculated molecular mass of 123.5 kDa. a2b2 null mutants were obtained by substitution of a central fragment of the Umchs6 gene with the hygromycin resistance cassette, and a1b1 null mutants were obtained by genetic recombination in plants of an a2b2Δch6 and a wild-type a1b1 strain. The mutation had no effect on the dimorphic transition in vitro or on mating, and growth rate of the mutants was only slightly reduced. On the other hand, they di…

Tri-alkenyl polyhedral oligomeric silsesquioxanes as comonomers and active center modifiers in ethylene copolymerization catalyzed by bis(phenoxy-imi…

2018

Abstract In copolymerization of ethylene (E) with tri-alkenyl-silsesquioxanes (POSS-6-3 and POSS-10-3) were used bis(phenoxy-imine) titanium, zirconium and vanadium catalysts, as well as salen-type vanadium catalysts. There were obtained copolymers with POSS-R-3 units as side branches of polymer chains. The type of employed bis(phenoxy-imine) titanium, zirconium and vanadium catalysts and salen-type catalyst of vanadium determined the copolymer chain termination reactions, as well as the mechanism of modification of the active species by the POSS-R-3 comonomer. POSS-R-3 comonomers caused selective poisoning of bis(phenoxy-imine) zirconium catalyst and they provided protection against tight …

On using prototype reduction schemes to optimize locally linear reconstruction methods

2012

Authors version of an article published in the journal: Pattern Recognition. Also available from the publisher at: http://dx.doi.org/10.1016/j.patcog.2011.06.021 This paper concerns the use of prototype reduction schemes (PRS) to optimize the computations involved in typical k-nearest neighbor (k-NN) rules. These rules have been successfully used for decades in statistical pattern recognition (PR) [1,15] applications and are particularly effective for density estimation, classification, and regression because of the known error bounds that they possess. For a given data point of unknown identity, the k-NN possesses the phenomenon that it combines the information about the samples from a pri…

A novel evaluation model for hybrid power system based on vague set and Dempster-Shafer evidence theory

2012

Published version of an article from the journal: Mathematical Problems in Engineering. Also available from the publisher:http://dx.doi.org/10.1155/2012/784389 Because clean energy and traditional energy have different advantages and disadvantages, it is of great significance to evaluate comprehensive benefits for hybrid power systems. Based on thorough analysis of important characters on hybrid power systems, an index system including security, economic benefit, environmental benefit, and social benefit is established in this paper. Due to advantages of processing abundant uncertain and fuzzy information, vague set is used to determine the decision matrix. Convert vague decision matrix to …

How to Design Economical Network Arches

2019

The network arch is an economical bridge type that can look good and needs 35 to 50 % less steel. Economical methods of erection using light steel skeletons can be found. The network arch is defined by having hangers that cross each other at least twice [1]. The arches are made of steel. When the distance between the arches is less than 20m, the author thinks that the tie should normally be made of concrete.

VDR MUTATION IN TWO SISTERS: PHENOTYPE VARIABILITY AND CLINICAL OUTCOME

2017

Objectives: Hereditary vitamin D-resistant rickets (HVDRR) is an autosomal recessive disease secondary to the mutation of vitamin D receptor (VDR) gene. These children show an early onset of rickets and in some of them alopecia is associated. Methods: We describe clinical features and laboratory findings in two sisters affected by HVDRR, as well as their response to treatment. Results: The first born is now 4 years old and had a severe and resistant hypocalcaemia, with low response to high doses of calcium per os, the requirement of intravenous infusion of calcium for a prolonged period, hypocalcaemic seizures resolved with high doses of intravenous calcium and high doses of vitamin D. Clin…

Infection by Influenza Virus in Childhood: A Call for Broader Influenza Vaccination

2004

Efficiency of Biolistic DNA Vaccination in Experimental Type I Allergy

2012

Gene gun-mediated delivery of allergen-encoding plasmid DNA has been in focus for many years now as being a needle-free alternative to the protein-based desensitization regimen used in specific immunotherapy. Biolistic immunization with the Helios gene gun has proven to be potent in the induction of antigen-specific CD4(+) and CD8(+) T cells. Here we describe biolistic vaccination in experimental mouse models of IgE-mediated type I allergy as well as allergen-induced airway inflammation.

Tūristu ceļošanas motivācijas un to ietekmējošie faktori.

2018

Bakalaura darba tēma „Tūristu ceļošanas motivācijas un to ietekmējošie faktori”. Bakalaura darba mērķis - pamatojoties uz teorētiskām atziņām un iedzīvotāju aptaujas rezultātiem, izpētīt tūrisma ceļošanas motivācijas un to ietekmējošos faktorus, atklāt nepilnības un sniegt priekšlikumus tūristu piesaistes veicināšanai. Darbs sastāv no 3 nodaļām. Pirmajā nodaļā autore sniedz ar ceļošanas motivāciju saistītu teorētisko aspektu raksturojumu. Otrajā nodaļā tiek sniegta Latvijas iedzīvotāju ceļošanas motivāciju analīze. Trešajā nodaļā autore apkopo Latvijas tūristu ceļošanas iemeslus. Darbs sastāv no 76 lapapusēm, tajā ir iekļautas 17 tabulas, 22 attēli kā arī darbs papildināts ar 2 pielikumiwm.

Comparison of the performance of different HPV genotyping methods for detecting genital HPV types

2008

Classification of high-risk HPV types for cervical cancer screening depends on epidemiological studies defining HPV type-specific risk. The genotyping tests that are used, are however, not uniform with regard to type-specific detection rates making comparisons between different studies difficult. To overcome the lack of a “gold standard” four tests were evaluated crosswise using 824 cervical smears pretested by HC2. The tests evaluated were the L1-PCR-based assays PGMY09/11 LBA, HPV DNA Chip and SPF LiPA and an E1 consensus PCR followed by cycle sequencing (E1-PCR). A subset of 265 samples was tested in addition with the GP5+/6+ reverse line blot assay. Differences were noted in the sensiti…