Results 51 to 60 of about 92,804 (340)

Mechanochemistry for Metal–Organic Frameworks and Covalent–Organic Frameworks (MOFs, COFs): Methods, Materials, and Mechanisms

open access: yesAdvanced Materials, EarlyView.
An overview is provided of the mechanochemistry of metal‐organic frameworks (MOFs) and covalent‐organic frameworks (COFs), highlighting opportunities and strategies for discovery, synthesis and reactivity studies of these materials. Mechanistic studies and comparisons to the mechanochemistry of organic solids are outlined, showcasing how advances in ...
Joseph M. Marrett   +3 more
wiley   +1 more source

The Cost Of Reinforcement: Selection On Flower Color In Allopatric Populations Of Phlox Drummondii* [PDF]

open access: yes, 2014
Reinforcement is the process by which increased reproductive isolation between incipient species evolves due to selection against maladaptive hybrids or costly hybrid mating.
Hopkins, Robin, Rausher, Mark D.
core   +1 more source

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

open access: yesAdvanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu   +3 more
wiley   +1 more source

A decline in pollinator dependent vegetable crop productivity in India indicates pollination limitation and consequent agro-economic crises. [PDF]

open access: yes, 2011
Approximately 70% of the tropical crop species depend on pollinators for optimum yields (Roubik, 1995, Klein 2007). The economic value of such pollinated crops to India is $726 million and India is the world's second largest vegetable producer ...
Parthiba Basu   +2 more
core   +1 more source

The Pollination of Toadflax [PDF]

open access: yesNature, 1916
Linaria spuria, Miller, is a not uncommon weed of cornfields on calcareous soils in the Midlands and south of England, in western, central, and southern Europe, in, northern Africa, and in western Asia, and it occurs adventitiously in North America. I have never observed insects pollinating the flower.
openaire   +6 more sources

Nest Modification Protects Immature Stages of the Japanese Orchard Bee (Osmia cornifrons) from Invasion of a Cleptoparasitic Mite Pest

open access: yesInsects, 2020
Osmia cornifrons (Radoszkowski) (Hymenoptera: Megachilidae) is an effective orchard pollinator. Considering the honey bee population decline in recent years, the conservation and propagation of O.
Neelendra K. Joshi   +2 more
doaj   +1 more source

Pollinator conservation—the difference between managing for pollination services and preserving pollinator diversity

open access: yesCurrent Opinion in Insect Science, 2015
Our review looks at pollinator conservation and highlights the differences in approach between managing for pollination services and preserving pollinator diversity. We argue that ecosystem service management does not equal biodiversity conservation, and that maintaining species diversity is crucial in providing ecosystem resilience in the face of ...
David Kleijn   +6 more
openaire   +4 more sources

Role of the Setae in an Ectoparasitic Seal Louse in Reducing Surface Drag: Numerical Modeling Approach

open access: yesAdvanced Theory and Simulations, EarlyView.
The seal louse Echinophthirius horridus has uniquely shaped setae that may reduce drag during its host's dives. Using numerical simulations, this study demonstrates that their natural inclination promotes vortex formation, minimizing friction and energy loss. These findings provide insights into biological surface adaptations and may inspire the design
Anika Preuss   +3 more
wiley   +1 more source

Pollination services in the UK: how important are honeybees? [PDF]

open access: yes, 2011
Pollination services are known to provide substantial benefits to human populations and agriculture in particular. Although many species are known to provide pollination services, honeybees (Apis mellifera) are often assumed to provide the majority of ...
Bailey, Alison P.   +3 more
core   +1 more source

NcSWP8, a New Spore Wall Protein, Interacts with Polar Tube Proteins in the Parasitic Microsporidia Vairimorpha (Nosema) ceranae

open access: yesMicroorganisms
Vairimorpha (Nosema) ceranae is a pathogen that affects Apis mellifera and Apis ceranae Fabricius, capable of spreading within and between honeybee colonies.
Pengfei Wang   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy