Results 11 to 20 of about 49,135 (303)

Organization and Concept of Intervention of the Chemical Defence Bases in Switzerland

CHIMIA, 2004
In contrast to radiological risks, which are the responsibility of the federal authorities, the cantons have to deal with chemical risks. In agreement with the chemical defence concept of the Swiss Fire Fighters Association (SFFA) each canton ...
Urs Ludescher
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Predator‐induced changes in the chemical defence of a vertebrate [PDF]

Journal of Animal Ecology, 2019
Abstract1. Inducible defences are ubiquitous in the animal kingdom, but little is known about facultative changes in chemical defences in response to predators, especially so in vertebrates.2. We tested for predator‐induced changes in toxin production of larval common toads (Bufo bufo), which are known to synthesize bufadienolide compounds.3.
Hettyey, Attila, Üveges, Bálint, Móricz, Ágnes M., Drahos, László, Capon, Robert J., Van Buskirk, Josh, Tóth, Zoltán, Bókony, Veronika, Johansson, Frank   +8 more
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Diet and chemical defence in ladybird beetles (Coleoptera: Coccinellidae)

European Journal of Entomology, 2022
In this paper, I review the effects of the diet of ladybirds on chemical defence in this group of beetles. The tendency to reflex bleed and the diversity of autogenously produced alkaloids in different taxa may be evolutionarily related to diet and the ...
John J. SLOGGETT
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Chemical antipredator defence is linked to higher extinction risk [PDF]

Royal Society Open Science, 2016
Many attributes of species may be linked to contemporary extinction risk, though some such traits remain untested despite suggestions that they may be important. Here, I test whether a trait associated with higher background extinction rates, chemical antipredator defence, is also associated with current extinction risk, using amphibians as a model ...
Kevin Arbuckle, Arbuckle, K
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Species with a chemical defence, but not chemical offence, live longer [PDF]

Journal of Evolutionary Biology, 2013
AbstractEvolutionary hypotheses for ageing generally predict that delayed senescence should evolve in organisms that experience lower extrinsic mortality. Thus, one might expect species that are highly toxic or venomous (i.e. chemically protected) will have longer lifespans than related species that are not likewise protected.
Hossie, Thomas, Hassall, Christopher, Knee, Wayne, Sherratt, Thomas   +3 more
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Arbuscular mycorrhizal fungi prevent the negative effect of drought and modulate the growth‐defence trade‐off in tomato plants

Journal of Sustainable Agriculture and Environment, 2022
Introduction A wide range of arbuscular mycorrhizal fungi (AMF) can be applied to agricultural soils as biofertilizers for increasing crop growth and yield.
Dimitri Orine, Emmanuel Defossez, Fredd Vergara, Henriette Uthe, Nicole M. vanDam, Sergio Rasmann   +5 more
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Monitoring and Prediction of the Vibration Intensity of Seismic Waves Induced in Underwater Rock by Underwater Drilling and Blasting

Defence Technology, 2022
All underwater drilling and blasting operations generate seismic waves. However, due to a lack of suitable vibration sensing instruments, most studies on the propagation of seismic waves have been limited to shorelines near construction areas or wharfs ...
Zhen-xiong Wang, Wen-bin Gu, Ting Liang, Shou-tian Zhao, Peng Chen, Liu-fang Yu   +5 more
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Application of ICP-MS in the Innovation and Practice of Instrument Analysis Course - Taking the Determination of Cesium in Soil as an Example [PDF]

SHS Web of Conferences
Instrumental analysis is an important part of analytical chemistry, which plays a crucial role in cultivating the experimental operation ability of students in disciplines such as environment, geology, and medicine.
Li Daxue, Liu Guohong, Li Jian, Xiao Yanhua, Li Danping, Xu Yuru   +5 more
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Chemical Defence and Toxins of Plants [PDF]

, 2010
Higher plants protect themselves by producing a variety of secondary metabolites and proteins that are involved in defense against herbivores as well as microbial pathogens. Concerning microbial pathogenesis in plants, in many cases, it is known that phytotoxins that are produced by plant pathogens play an important role in disease development causing ...
Yamane, H., Konno, K., Sabelis, M., Takabayashi, J., Sassa, T., Oikawa, H.   +5 more
openaire   +3 more sources

Deterrent activities in the crude lipophilic fractions of Antarctic benthic organisms: chemical defences against keystone predators [PDF]

Polar Research, 2014
Generalist predation constitutes a driving force for the evolution of chemical defences. In the Antarctic benthos, asteroids and omnivore amphipods are keystone opportunistic predators.
Laura Núñez-Pons, Conxita Avila
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