Results 121 to 130 of about 626,568 (372)
Alkaptonuuriast põhjustatud aordiklapi kitsenemus, südame pärgarteri haigus, teisene osteoartroos ja nende kirurgiline ravi [PDF]
, 2013 Alkaptonuuria on haruldane, progresseeruv ja pöördumatu geneetiline ainevahetushaigus. Klassikalise kliinilise triaadina esinevad selle korral homogentisiinhappe eritus uriiniga, sidekoe (eriti kõhrkoe) pigmentatsioon ning degeneratiivne liigesepõletik ...
Jõeste, Enn +5 more
core +2 more sources
Poka: A Necro‐Robot Beetle with a Measured Payload Ratio of 6847%
Advanced Robotics Research, EarlyView.Here, Poka, a necro‐robot beetle with the ability to carry more than 68 times its own weight, is introduced, making it also a walking robot with the highest payload ratio measured to date. This paper is concerned with the design, manufacture and validation of ‘Poka', a novel millimetre‐scale necro‐robot aimed at bridging the performance gap between ...
Yordan Tsvetkov, Parvez Alam
wiley +1 more source
Ant-Plant Relationships in a Re-Created Tallgrass Prairie [PDF]
, 2018 Relationships between the distributions of nesting ants and flora were investigated in a re-created tallgrass prairie located in northeastern Illinois. One-third of 167 randomly selected 1m2 quadrats in the prairie contained ant nests.
Dave, Dhvani G +3 more
core +3 more sources
The Phylogeny and Evolution of Ants
, 2014 Originating most likely in the early Cretaceous, ants have diversified to become the world’s most successful eusocial insects, occupying most terrestrial ecosystems and acquiring a global ecological footprint.
P. S. Ward
semanticscholar +1 more source
BMC Biology, 2008 BackgroundThe invasive garden ant, Lasius neglectus, is the most recently detected pest ant and the first known invasive ant able to become established and thrive in the temperate regions of Eurasia.
L. V. Ugelvig +5 more
semanticscholar +1 more source
Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC
Advanced Robotics Research, EarlyView.The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang +7 more
wiley +1 more source
Nature, 1873 SOME months ago (vol. vii. p. 443) I sent you an extract from a letter from Mr. Hague, a geologist residing in California, who gave me a very curious account of the terrifying effect on the other ants of the sight of a few which he had killed on one of their paths. Mr.
openaire +6 more sources
Advanced Sustainable Systems, EarlyView.Bisphenol‐A polycarbonate is upcycled via a simple one‐pot reaction into an aromatic Mannich polyol, which serves as a precursor for fabricating poly(urethane‐isocyanurate) (PUR‐PIR) aerogels. PUR‐PIR aerogels, prepared with different isocyanate indices, exhibit high porosities, high specific surface areas, ultralow thermal conductivity, and excellent ...
Ivona Glišić +5 more
wiley +1 more source
Aphids, Ants and Ladybirds: a mathematical model predicting their population dynamics
, 2019 The interaction between aphids, ants and ladybirds has been investigated from an ecological point of view since many decades, while there are no attempts to describe it from a mathematical point of view.
Gabbriellini, Gianluca
core +1 more source