4,478 research outputs found
Luttinger liquid superlattices
We calculate the correlation functions and the DC conductivity of Luttinger
liquid superlattices, modeled by a repeated pattern of interacting and free
Luttinger liquids. In a specific realization, where the interacting subsystem
is a Hubbard chain, the system exhibits a rich phase diagram with four
different phases: two metals and two compressible insulators. In general, we
find that the effective low energy description amalgamates features of both
types of liquids in proportion to their spatial extent, suggesting the
interesting possibility of `engineered' Luttinger liquids.Comment: RevTeX, 5 pages, 3 figure
Brazilian Thoracic Association recommendations for the management of post-tuberculosis lung disease
Historically, all efforts against tuberculosis were focused on rapid diagnosis and effective treatment to break the chain of transmission of Mycobacterium tuberculosis. However, in the last few years, more and more evidence has been found on the dramatic consequences of the condition defined as post-tuberculosis lung disease (PTLD). Approximately one third of patients surviving pulmonary tuberculosis face considerable ongoing morbidities, including respiratory impairment, psychosocial challenges, and reduced health-related quality of life after treatment completion. Given the important global and local burden of tuberculosis, as well as the estimated burden of PTLD, the development of a consensus document by a Brazilian scientific society—Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)—was considered urgent for the prevention and management of this condition in order to allocate resources to and within tuberculosis services appropriately and serve as a guide for health care professionals. A team of eleven pulmonologists and one methodologist was created by the SBPT to review the current evidence on PTLD and develop recommendations adapted to the Brazilian context. The expert panel selected the topics on the basis of current evidence and international guidelines. During the first phase, three panel members drafted the recommendations, which were divided into three sections: definition and prevalence of PTLD, assessment of PTLD, and management of PTLD. In the second phase, all panel members reviewed, discussed, and revised the recommendations until a consensus was reached. The document was formally approved by the SBPT in a special session organized during the 2023 SBPT Annual Conference
Bark anatomy, chemical composition and ethanol-water extract composition of Anadenanthera peregrina and Anadenanthera colubrina
The bark of Anadenanthera peregrina (L.) Speg and Anadenanthera colubrina (Vell.) Brenan
were characterized in relation to anatomical and chemical features. The barks were
similar and included a thin conducting phloem, a largely dilated and sclerified non-conducting
phloem, and a rhyridome with periderms with thin phellem interspersed by cortical tissues.
Only small differences between species were observed that cannot be used alone for
taxonomic purposes. The summative chemical composition of A. peregrina and A. colubrina
was respectively: 8.2% and 7.7% ash; 28.8% and 29.3% extractives; 2.4% and 2.6%
suberin; and 18.9% lignin. The monosaccharide composition showed the predominance of
glucose (on average 82% of total neutral sugars) and of xylose (9%). The ethanol-water
extracts of A. peregrina and A. colubrina barks included a high content of phenolics, respectively:
total phenolics 583 and 682 mg GAE/g extract; 148 and 445 mg CE/g extract; tannins
587 and 98 mg CE/g extract. The antioxidant activity was 238 and 269 mg Trolox/g extract.
The barks of the Anadenanthera species are a potential source of polar extractives that will
represent an important valorization and therefore contribute to improve the overall economic
potential and sustainability of A. peregrina and A. colubrinainfo:eu-repo/semantics/publishedVersio
Identificação de progênies S1 de mandioca com maior nível de endogamia com base em marcadores microssatélites.
A mandioca (Manihot esculenta Crantz) é considerada uma espécie preferencialmente alógama e altamente heterozigótica, apresentando protoginia, mas podendo ocorrer autofecundação em taxas bem baixas
Utilização de PCR multiplex a partir de marcadores VNTR em mandioca.
O uso de marcadores moleculares do tipo VNTR (Variable Number of Tandem Repeats) no equipamento Fragment Analyzer ? Automated TE System da Advanced Analytical,Bocasiona custos elevados por unidade de dado a ser analisado
Condensed Matter Theory of Dipolar Quantum Gases
Recent experimental breakthroughs in trapping, cooling and controlling
ultracold gases of polar molecules, magnetic and Rydberg atoms have paved the
way toward the investigation of highly tunable quantum systems, where
anisotropic, long-range dipolar interactions play a prominent role at the
many-body level. In this article we review recent theoretical studies
concerning the physics of such systems. Starting from a general discussion on
interaction design techniques and microscopic Hamiltonians, we provide a
summary of recent work focused on many-body properties of dipolar systems,
including: weakly interacting Bose gases, weakly interacting Fermi gases,
multilayer systems, strongly interacting dipolar gases and dipolar gases in 1D
and quasi-1D geometries. Within each of these topics, purely dipolar effects
and connections with experimental realizations are emphasized.Comment: Review article; submitted 09/06/2011. 158 pages, 52 figures. This
document is the unedited author's version of a Submitted Work that was
subsequently accepted for publication in Chemical Reviews, copyright American
Chemical Society after peer review. To access the final edited and published
work, a link will be provided soo
Bulks de DNA para identificação de marcadores SCAR relacionados à resistência a Fusarium oxysporum cubense.
A banana (Musa spp.) é uma das frutas mais consumidas no país, possui alto valor nutritivo e encontra-se disponível durante todo ano. Contudo, a bananeira ainda é acometida por vários fatores bióticos e abióticos
- …