Results 21 to 30 of about 139,724 (186)

Analytical solution of a generalized Penna model

, 2004
In 1995 T.J.Penna introduced a simple model of biological aging. A modified Penna model has been demonstrated to exhibit behaviour of real-life systems including catastrophic senescence in salmon and a mortality plateau at advanced ages.
B. Charlesworth, D. Makowiec, J. B. Coe, J.B. Coe, M. Magdon-Maksymowicz, Opinion, P.B. Medawar, P.F. Verhulst, R.M.C. Almeida, R.M.C. Almeida, S. Moss de Oliviera, S.D. Pletcher, T.J.P. Penna, T.J.P. Penna, T.J.P. Penna, W.D. Hamilton, Y. Mao   +16 more
core   +1 more source

BMS invariance and the membrane paradigm [PDF]

, 2016
The Bondi-van der Burg-Metzner-Sachs (BMS) group is the asymptotic symmetry group of asymptotically flat spacetime. It is infinite dimensional and entails an infinite number of conservation laws.
Penna, Robert F.
core   +2 more sources

Computerized Clinical Decision Support to Prevent Venous Thromboembolism among Hospitalized Patients: Proximal Outcomes from a Multiyear Quality Improvement Project

Journal for Healthcare Quality, EarlyView., 2014
Abstract Despite venous thromboembolism (VTE) policy initiatives, gaps exist between guidelines and practice. In response, hospitals implement clinical decision support (CDS) systems to improve VTE prophylaxis. To assess the impact of a VTE CDS on reducing incidence of VTE, this study used a pretest/posttest, longitudinal, cohort design incorporating ...
Robert C. Amland, Bonnie B. Dean, Hsing‐Ting Yu, Hugh Ryan, Timothy Orsund, Jeffrey L. Hackman, Shauna R. Roberts   +6 more
wiley   +1 more source

RELATO DE CASO DE SÍNDROME DE SWEET NA LEUCEMIA AGUDA: DESAFIOS NO DIAGNÓSTICO E TRATAMENTO

Hematology, Transfusion and Cell Therapy
Objetivo: Reportar os desafios no diagnóstico e tratamento da Síndrome de Sweet em contexto de Leucemia aguda febril com lesões cutâneas. Materiais e métodos: Relato de caso.
TS Soares, ML Silva, FL Nogueira, NAHL Silva, MJA Sousa, LP Almeida, MMS Silva, EMS Kroger, RE Emídio, JL Vendramini   +9 more
doaj   +1 more source

Population Dynamics in the Penna Model

, 2004
We build upon the recent steady-state Penna model solution, Phys.Rev.Lett. 89, 288103 (2002), to study the population dynamics within the Penna model. We show, that any perturbation to the population can be broken into a collection of modes each of which
A.F.R. de Toledo Piza, J. B. Coe, J.B. Coe, J.B. Coe, P. F. Verhulst, P.H. Leslie, S.M. Jazwinski, T.J.P. Penna, T.J.P. Penna, Y. Mao   +9 more
core   +1 more source

Pathway toward the formation of supermixed states in ultracold boson mixtures loaded in ring lattices [PDF]

, 2019
We investigate the mechanism of formation of supermixed soliton-like states in bosonic binary mixtures loaded in ring lattices. We evidence the presence of a common pathway which, irrespective of the number of lattice sites and upon variation of the ...
Penna, Vittorio, Richaud, Andrea
core   +2 more sources

Solvable senescence model with positive mutations

, 2004
We build upon our previous analytical results for the Penna model of senescence to include positive mutations. We investigate whether a small but non-zero positive mutation rate gives qualitatively different results to the traditional Penna model in ...
H. J. Muller, J. B. Coe, M. E. Cates, S. D. Pletcher, Y. Mao   +4 more
core   +1 more source

Monte Carlo Simulation of Age-Dependent Host-Parasite Relations

, 2007
The death of a biological population is an extreme event which we investigate here for a host-parasitoid system. Our simulations using the Penna ageing model show how biological evolution can ``teach'' the parasitoids to avoid extinction by waiting for ...
Ana Proykova, Dietrich Stauffer, Karl-Heinz Lampe, Lampe, Malarz, Moss de Oliveira, Pal, Stauffer   +7 more
core   +2 more sources

Dysphagia, nutritional status, and quality of life in patients with head and neck cancer undergoing radiotherapy alone or combined with chemotherapy: an observational study

BMC Cancer
Introduction Radiotherapy (RT) is the most common nonsurgical treatment for head and neck cancer (HNC) and may or may not be combined with chemotherapy (CT). Dysphagia, characterized by impaired swallowing function, is one of the most common side effects
Marina de Castro Monteiro Franco Gomes, Pedro Maciel de Vasconcellos Ferreira, Ana Clara Speziali Menegazzi Almeida, Júlia Soares Cornélio, Thiago Jardim Arruda, Arnoldo Mafra, Marcelo Henrique Silva Nunes, Rafael Borges Salera, Raquel Fabiane Nogueira, Juliana Maria Braga Sclauser, Poliana Mendes de Andrade, Luciana Priscila Marçal, Ana Paula Drummond-Lage, Bruno Almeida Rezende   +13 more
doaj   +1 more source

"Duas escadas, duas leituras. O mesmo encanto"

Oculum Ensaios, 2023
ESTE ENSAIO TRATA de duas séries de registros fotográficos de duas escadas, mediadas por uma defesa do projeto não construído da “Escada Ventura”, apresentado pelo arquiteto Gustavo Penna em seu livro “Impressões” (PENNA; MAGALHÃES; SEARA, 2013).
Pedro Paulo de Siqueira Mainieri
doaj