Results 51 to 60 of about 12,720,243 (353)

Duration and reliability of placental scars in the Norwegian lemming Lemmus lemmus (L.)

Fauna Norvegica, 1988
The development of placental scars and the correlation between the number of scars and the number of young born, was studied in Norwegian lemmings Lemmus lemmus (L.) from a laboratory colony.
Anders Grimnes, Arne Semb-Johansson
doaj   +1 more source

Experimental study on population-based incremental learning algorithms for dynamic optimization problems [PDF]

, 2005
Copyright @ Springer-Verlag 2005.Evolutionary algorithms have been widely used for stationary optimization problems. However, the environments of real world problems are often dynamic. This seriously challenges traditional evolutionary algorithms.
Yang, S, Yao, X
core   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Predators reduce extinction risk in noisy metapopulations [PDF]

, 2010
Background Spatial structure across fragmented landscapes can enhance regional population persistence by promoting local “rescue effects.” In small, vulnerable populations, where chance or random events between individuals may have disproportionately ...
Bonsall, Michael B., Bull, James C.
core   +5 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Structure and absolute growth of a population of Hippolyte inermis Leach 1815 (Decapoda: Caridea) from Zostera marina (L.) meadows (Malaga, southern Spain)

Scientia Marina, 2009
The Hippolyte inermis Leach 1815 population from Zostera marina beds in southern Spain showed two recruitment periods that occurred simultaneously for both sexes (from September to December and from April to June), in a size range between 1.67 and 1.90 ...
M. Eugenia Manjón-Cabeza, Vanesa Cobos, J. Enrique García Muñoz, J. Enrique García Raso   +3 more
doaj   +1 more source

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

Choosing Mutation and Crossover Ratios for Genetic Algorithms - A Review with a New Dynamic Approach

Inf., 2019
Genetic algorithm (GA) is an artificial intelligence search method that uses the process of evolution and natural selection theory and is under the umbrella of evolutionary computing algorithm.
Ahmad Hassanat, Khalid Almohammadi, Esra’a Alkafaween, Eman Abunawas, A. Hammouri, V. B. Surya Prasath   +5 more
semanticscholar   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Study characteristics of juvenile diabetes mellitus cases in bangladesh.

Journal of Family and Reproductive Health, 2014
Objective: To identify the proportion and some selected characteristics of juvenile diabetics attending BIRDEM hospital. Materials and methods: This was a cross sectional study. The study was conducted in the BIRDEM hospital.
Rezaul Karim, Nusrat Jahan Mona
doaj