Results 41 to 50 of about 443,008 (342)

Aggregation-regulated room-temperature phosphorescence materials with multi-mode emission, adjustable excitation-dependence and visible-light excitation

Nature Communications, 2023
Constructing room-temperature phosphorescent materials with multiple emission and special excitation modes is fascinating and challenging for practical applications.
Jingxuan You, Xin Zhang, Qinying Nan, Kunfeng Jin, Jinming Zhang, Yirong Wang, Chunchun Yin, Zhiyong Yang, Jun Zhang   +8 more
doaj   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Reinforced structural plastics [PDF]

, 1972
Reinforced polyimide structures are described. Reinforcing materials are impregnated with a suspension of polyimide prepolymer and bonded together by heat and pressure to form a cured, hard-reinforced, polyimide ...
Burns, E. A., Jones, J. F., Kendrick, W. P., Lubowitz, H. R., Thorpe, R. S.   +4 more
core   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Microplastics in the Mediterranean marine environment: a combined bibliometric and systematic analysis to identify current trends and challenges

Microplastics and Nanoplastics, 2022
In recent decades, the potential toxicological and environmental effects of microplastics (MPs) in the Mediterranean Sea region have received growing attention.
Marija Papadimitriu, Graeme Allinson
doaj   +1 more source

Intelligent pigments and plastics for CO2 detection [PDF]

, 2010
A novel CO2 intelligent pigment is incorporated into a thermoplastic polymer to create a long-lived CO2-sensitive plastic film which is characterised and then compared to a traditional solvent-based CO2 indicator ...
Andrew Mills, Fernandez-Sanchez, Graham A. Skinner, McMurray, Mills, Mills, Mills, Mills, Pauline Grosshans, Schroeder   +9 more
core   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

Influence of the Recyclate Content on the Process Stability and Part Quality of Injection Moulded Post-Consumer Polyolefins

Advances in Polymer Technology
In recent years, the drive to adopt sustainable practices and develop eco-friendly processes and products has gained significant momentum in the global polymer industry.
Pia Wagner, Jan Kleinsorge, Christian Hopmann   +2 more
doaj   +1 more source

The On-Line Measurement of Water in Polymers

Measurement + Control, 1968
Water is a common contaminant of many products. Most natural products such as grain and flour, tobacco, wood and paper contain a high proportion of water in their normal states and can be too wet or too dry.
G. L. Collier BSc, ARIC, CEng, AMIERE, R. E. Green CEng, MIEE   +1 more
doaj   +1 more source

Molding apparatus [PDF]

, 1974
Apparatus for compression molding of thermosetting plastics compositions including interfitting hollow male and female components is reported. The components are adapted to be compressed to form a rocket nozzle in a cavity.
Heier, W. C.
core   +1 more source