Results 51 to 60 of about 5,204,898 (289)

Improved methods for the analysis of circadian rhythms in correlated gene expression data [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2018
Circadian clocks regulate biological behaviours, such as sleeping and waking times, that recur naturally on an approximately 24-hour cycle. These clocks tend to be influenced by a variety of external factors, sometimes to the extent that it can have an
Wannapa Pukdee, Orathai Polsen, Mohamed Fazil Baksh   +2 more
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

Impact of mulching and planting time on spring-wheat (Triticum aestivum) growth: A combined field experiment and empirical modeling approach

Open Agriculture
This study aimed to assess the effect of straw-mulching and sowing time on spring-wheat growth and also evaluate the suitability of nonlinear models (Logistic, Gompertz, Richards and Weibull models) in forecasting crop growth.
Alhassan Abdul-Rauf Malimanga
doaj   +1 more source

Estimation of Effective Length of Type-A Grounding System According to IEC 62305-3 Using a Machine Learning Regression Model

Applied Sciences
Two types of grounding systems are recommended for use in the international standard IEC 62305-3, Part 3: Physical damage to structures and life hazard.
Dino Lovrić, Ivan Krolo, Ivica Jurić-Grgić   +2 more
doaj   +1 more source

Critical points in logistic growth curves and treatment comparisons

Scientia Agricola, 2012
Several biological phenomena have a behavior over time mathematically characterized by a strong increasing function in the early stages of development, then by a less pronounced growth, sometimes showing stability.
José Raimundo de Souza Passos, Sheila Zambello de Pinho, Lídia Raquel de Carvalho, Martha Maria Mischan   +3 more
doaj   +1 more source

The use of radiation-resistant materials in gas semiconductor Fourier spectroscopy for express analysis of rocket fuel in the production process on the Moon / Mars / asteroids

Open Astronomy, 2021
The paper considers the possibility of using thin films based on samarium sulfide, as well as composite systems of metal-oxide semiconductors doped with rare-earth elements, as radiation-resistant sensitive materials for monitoring leaks of rocket fuel ...
Kazakov Sergey, Grevtsev Mikhail, Chistyakov Victor, Solov’ev Sergey   +3 more
doaj   +1 more source

A Comparative Study of Design of Active Fault-Tolerant Control System for Air–Fuel Ratio Control of Internal Combustion Engine Using Particle Swarm Optimization, Genetic Algorithm, and Nonlinear Regression-Based Observer Model

Applied Sciences, 2022
In this article, three distinct strategies for designing an Active Fault-Tolerant Control System (AFTCS) for Air-Fuel Ratio (AFR) control of an Internal Combustion (IC) engine in a process plant to avoid engine shutdown, are presented. The proposed AFTCS
Turki Alsuwian, Muhammad Sajid Iqbal, Arslan Ahmed Amin, Muhammad Bilal Qadir, Saleh Almasabi, Mohammed Jalalah   +5 more
doaj   +1 more source

A Toolbox for Nonlinear Regression in R: The Package nlstools

, 2015
Nonlinear regression models are applied in a broad variety of scientific fields. Various R functions are already dedicated to fitting such models, among which the function nls() has a prominent position.
F. Baty, C. Ritz, S. Charles, M. Brutsche, J. Flandrois, M. Delignette-Muller   +5 more
semanticscholar   +1 more source

Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer

Aging and Cancer, EarlyView.
Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss, Alexis C. Wardell, Allison M. Deal, Kirsten A. Nyrop, Allison Ross, Yara G. Abdou, Jeffrey D. Aldrich, Lisa A. Cary, E. Claire Dees, Katherine E. Reeder‐Hayes, Emily M. Ray, Natalia Mitin, Denis Tsygankov   +12 more
wiley   +1 more source

Allometric equations to estimate aboveground and belowground biomass of Pinus patula Schiede ex Schltdl. & Cham

Forest Science and Technology, 2020
The estimation of tree biomass serves as a parameter of forest productivity; in addition, it is a method to estimate carbon fixation and storage. Studies on total biomass that include the belowground component for the Pinus genus are scarce in Mexico due
Arcelio Martínez-Domínguez, Faustino Ruiz-Aquino, Wenceslao Santiago-García, Pablo Antúnez, Miguel Ángel López-López, Cesar Valenzuela-Encinas, Rossy Feria-Reyes   +6 more
doaj   +1 more source