Results 21 to 30 of about 109 (103)

Semifields and a theorem of Abhyankar [PDF]

Commentationes Mathematicae Universitatis Carolinae, 2017
Abhyankar proved that every field of finite transcendence degree over $\mathbb{Q}$ or over a finite field is a homomorphic image of a subring of the ring of polynomials $\mathbb{Z}[T_1, \dots, T_n]$ (for some $n$ depending on the field). We conjecture that his result can not be substantially strengthened and show that our conjecture implies a well ...
openaire   +3 more sources

Molecular and Functional Insights Into the Avian Gut Microbiota: Roles in Health, Disease Resistance, and Microbiome Modulation

Advanced Gut &Microbiome Research, Volume 2026, Issue 1, 2026.
The avian gut microbiota constitutes a complex, multiphyla ecosystem that critically shapes host physiology, immune function, disease resistance, and antimicrobial resistance dynamics. Bacteria, archaea, fungi, and viruses collectively regulate nutrient metabolism, mucosal barrier integrity, and immunological maturation, whereas dysbiosis increases ...
Adetolase Azizat Bakre, Ridwan Olamilekan Adesola, Ibrahim Idris, Jian Wu   +3 more
wiley   +1 more source

From semifield flocks to the generalized translation dual of a semifield [PDF]

Innovations in Incidence Geometry: Algebraic, Topological and Combinatorial, 2017
The goal of this article is to present developments of Thas’ relationship between translation geneneralized quadrangles and symplectic semifield spreads. Finally we discuss some open problems.
openaire   +3 more sources

Phytochemical Analysis and Insecticidal Activity of Four Plant Extracts Against Maize Weevil and Larger Grain Borer

International Journal of Agronomy, Volume 2026, Issue 1, 2026.
Plant‐based biopesticides provide a sustainable alternative to synthetic insecticides for managing postharvest losses caused by maize weevil (Sitophilus zeamais) and larger grain borer (Prostephanus truncatus). This study evaluated the phytochemical composition and insecticidal activity of methanolic extracts of Lantana camara, Citrus sinensis, Moringa
Samuel Yakubu Gariba, Daniel Kwadjo Dzidzienyo, Vincent Yao Eziah, Nidhi Chaudhary   +3 more
wiley   +1 more source

Natural Pesticides in Crop Protection: Comparative Advantages, Ecological Risks, and Future Directions

Journal of Chemistry, Volume 2026, Issue 1, 2026.
Although synthetic pesticides have long been used to protect crops, their widespread use has led to significant health and environmental problems, including ecological contamination, resistant pest populations, and hazardous residues in food. These restrictions have sparked interest in natural pesticides (NPs), particularly the secondary metabolites of
Ruth Mwangi, Njogu M. Kimani, Munmun Bardhan   +2 more
wiley   +1 more source

Mineral acquisition from a different angle – how the root angle in cereals determines nutrient uptake

New Phytologist, Volume 248, Issue 2, Page 576-586, October 2025.
Summary Plant roots are vital for absorbing soil resources and directly impact crop productivity. Because nutrients are unevenly distributed through soil layers, root system architecture (RSA) is a key trait influencing nutrient uptake. Shallow RSA can enhance access to surface nutrients, while steeper architectures help reach deeper nutrients.
Frederik J. T. van der Bom, Lorene Siegwart, Giuseppe Sangiorgi, Gwendolyn K. Kirschner   +3 more
wiley   +1 more source

Estimating the efficacy and plume reach of semiochemical‐baited traps on the capture of Trogoderma granarium everts

Pest Management Science, Volume 81, Issue 8, Page 4471-4480, August 2025.
"Simulated warehouse": In this study, we take the step of testing existing and modified trap designs for Trogoderma after the release of T. granarium exclusively. This work will serve to evaluate trap efficacy, while providing a template for further attractant–kill research. The most effective trap was dome trap.
Paraskevi Agrafioti, William R. Morrison III, Michael Domingue, Evagelia Lampiri, Scott W. Myers, Christos G. Athanassiou   +5 more
wiley   +1 more source

The six semifield planes associated with a semifield flock

Advances in Mathematics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ball, Simeon, Brown, Matthew R.
openaire   +2 more sources

Phenology of Xylotrechus arvicola (Coleoptera: Cerambycidae) Adults in Spanish Vineyards

Australian Journal of Grape and Wine Research, Volume 2025, Issue 1, 2025.
Background and Aims: The longicorn beetle Xylotrechus arvicola (Olivier) (Coleoptera: Cerambycidae) is an important pest in vineyards of the Iberian Peninsula. Previous studies have reported that different varieties of grapevines Vitis vinifera exhibit varying susceptibility to infestation by this species. Methods and Results: Adult X.
Álvaro Rodríguez-González, Daniela Ramírez-Lozano, Guzmán Carro-Huerga, Laura Zanfaño, Andrea Antolín-Rodríguez, Pedro Antonio Casquero, Mark Sosnowski   +6 more
wiley   +1 more source

Biomimetic and Synthetic Advances in Natural Pesticides: Balancing Efficiency and Environmental Safety

Journal of Chemistry, Volume 2025, Issue 1, 2025.
Biomimetic and synthetic advancements in natural pesticides are driving a transformative shift toward sustainable pest management, promoting agricultural productivity while preserving ecological balance. These innovative approaches are inspired by nature’s defense mechanisms, integrating cutting‐edge science to develop precise, effective, and ...
Mohammad Harun-Ur-Rashid, Abu Bin Imran, Mahmood Ahmed   +2 more
wiley   +1 more source