Results 61 to 70 of about 13,893,592 (304)

On the structure of valiant's complexity classes [PDF]

Discrete Mathematics & Theoretical Computer Science, 1998
In Valiant developed an algebraic analogue of the theory of NP-completeness for computations of polynomials over a field. We further develop this theory in the spirit of structural complexity and obtain analogues of well-known results by Baker, Gill, and Solovay, Ladner, and Schöning.\par We show that if Valiant's hypothesis is true, then there is a p ...
openaire   +6 more sources

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin, Berrak Itır Aylı, Nüket Paksoy   +2 more
wiley   +1 more source

Occurrence and Characterization of Microplastics in Gilthead Seabream (Sparus aurata) Reared in the Sardinian Coastal Environments, Italy: Implications for Consumer Exposure

Foods
The objective of the present study was the determination of microplastics in Gilthead Seabream (Sparus aurata) reared in Italy and the assessment of consumer exposure.
Rita Melillo, Roberto Lonis, Giuseppa Lorenzoni, Gabriella Piras, Nicola Cogoni, Simona Cau, Sara Salza, Tiziana Tedde, Riccardo Bazzardi, Monica Molotzu, Giuseppe Esposito, Bruna Vodret, Domenico Meloni, Sebastiano Virgilio   +13 more
doaj   +1 more source

The complexity of random ordered structures

Annals of Pure and Applied Logic, 2006
"Vegeu el resum a l'inici del document del fitxer adjunt".
Joel H. Spencer, Katherine St. John
openaire   +4 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Structure of the Human FANCL RING-Ube2T Complex Reveals Determinants of Cognate E3-E2 Selection [PDF]

, 2014
The combination of an E2 ubiquitin-conjugating enzyme with an E3 ubiquitin-ligase is essential for ubiquitin modification of a substrate. Moreover, the pairing dictates both the substrate choice and the modification type. The molecular details of generic
Miles, Jennifer Anne, Hodson, Charlotte, Purkiss, Andrew, Walden, Helen   +3 more
core   +1 more source

Implementation of digestion and characterization procedures for control standardization on samples of Gilthead Seabream (Sparus aurata) and plastic polymers from the coastal environment of the Asinara Gulf (Sardinia, Italy)

Applied Food Research
The objective of the present study was the implementation of a digestion procedure along with Fourier transform infrared microscopy (μ-FTIR) analysis for control standardization on samples of Gilthead Seabream (Sparus aurata) and different types of ...
Rita Melillo, Roberto Lonis, Giuseppa Lorenzoni, Gabriella Piras, Nicola Cogoni, Simona Cau, Sara Salza, Riccardo Bazzardi, Monica Molotzu, Giuseppe Esposito, Bruna Vodret, Domenico Meloni, Sebastiano Virgilio   +12 more
doaj   +1 more source

Classification of the nucleolytic ribozymes based upon catalytic mechanism [version 1; peer review: 3 approved]

F1000Research, 2019
The nucleolytic ribozymes carry out site-specific RNA cleavage reactions by nucleophilic attack of the 2′-oxygen atom on the adjacent phosphorus with an acceleration of a million-fold or greater.
David M.J. Lilley
doaj   +1 more source

Diagnostics of thin-walled structures of complex geometry and structure

Structural Mechanics of Engineering Constructions and Buildings, 2021
The main stages of the birth of thin-walled structures, changes in their relative thickness and mass of a unit area are given; ways of creating perfect thin-walled structures are indicated.
Nukh M. Yakupov, Samat N. Yakupov
doaj   +1 more source

Complex projective structures

, 2009
This is a survey of the theory of complex projective (CP^1) structures on compact surfaces. After some preliminary discussion and definitions, we concentrate on three main topics: (1) Using the Schwarzian derivative to parameterize the moduli space (2) Thurston's parameterization of the moduli space using grafting (3) Holonomy representations of CP^1 ...
openaire   +2 more sources