Results 41 to 50 of about 11,193,863 (298)

Structured model of bacterial growth and tests with activated sludge in a one-stage and two-stage chemostat [PDF]

, 1979
A kinetic model for a growing culture of micro-organisms was developed that correlated the biochemical structure of cells with quantitative physiological behaviour.
Harder, A.
core  

Trading stages: Life expectancies in structured populations [PDF]

Experimental Gerontology, 2012
Interest in stage-and age structured models has recently increased because they can describe quantitative traits such as size that are left out of age-only demography. Available methods for the analysis of effects of vital rates on lifespan in stage-structured models have not been widely applied because they are hard to use and interpret, and tools for
Ulrich K. Steiner, Shripad Tuljapurkar, Tim Coulson, Carol Horvitz   +3 more
openaire   +5 more sources

Social Functioning Within the First Years After Pediatric Brain Tumor Diagnosis and the Relationship With Family Psychosocial Risk

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivors of pediatric brain tumors (PBTs) can experience long‐term social difficulties, impacting quality of life. Beyond medical and environmental factors, family psychosocial risk may play a role in social outcomes by shaping the caregiving environment and may provide intervention options.
Renske H. Houben, Marisa H. Huisman, Martha A. Grootenhuis, Femke K. Aarsen, Marita Partanen   +4 more
wiley   +1 more source

Singular perturbation method for global stability of ratio-dependent predator-prey models with stage structure for the prey

Electronic Journal of Differential Equations, 2013
In this article, a singular perturbation is introduced to analyze the global asymptotic stability of positive equilibria of ratio-dependent predator-prey models with stage structure for the prey.
Linfei Nie, Zhidong Teng
doaj  

Inside dynamics for stage-structured integrodifference equations [PDF]

Journal of Mathematical Biology, 2019
A stage-structured model of integrodifference equations is used to study the asymptotic neutral genetic structure of populations undergoing range expansion. That is, we study the inside dynamics of solutions to stage-structured integrodifference equations.
Marculis, Nathan, G, Garnier, Jimmy, Lui, Roger, Lewis, Mark, A   +3 more
openaire   +3 more sources

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk, Sebastian Michaelis, Michaela Döring, Thomas Eichholz, Ursula Holzer, Martin Ebinger, Tim Flaadt, Rupert Handgretinger, Peter Lang, Jan Frederic Weller, Markus Mezger   +10 more
wiley   +1 more source

Discretizing and validating Keyfitz' entropy for any demographic classification

Methods in Ecology and Evolution
Keyfitz's entropy originally is a shape measure of senescence for continuous‐time models. But a later formula of Keyfitz's entropy for discrete time also exists. de Vries et al. (2023) showed that this discrete‐time formula is not a genuine shape measure
Stefano Giaimo
doaj   +1 more source

Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari, Regina Hadi Putri, Fatimah Assyifa, Judith Spijkerman, Gertjan Johannes Kaspers, Susi Susanah   +5 more
wiley   +1 more source

Mechanisms causing the transition between spatial pattern long transients

Royal Society Open Science
Regular self-organized spatial patterns can be observed in many ecological systems. Some such patterns are quasi-stable; that is, they can switch to a different spatial pattern on a relatively short time scale in the absence of external changes in ...
Linhao Xu, Donald L. DeAngelis
doaj   +1 more source

Bacterial Community Structure in Rhizosphere of Barley at Maturity Stage

Agronomy, 2023
The crop rhizosphere is the main site of soil microbial activities. Understanding the structure and diversity of microbial communities in the crop rhizosphere will help us reveal interactions between rhizosphere microorganisms and plant growth.
Siyu Zhang, Yue An, Yu Zhou, Xiaofang Wang, Yiqing Tang, Daorong Zhang, Genlou Sun, Qifei Wang, Xifeng Ren   +8 more
doaj   +1 more source