scholarly journals Infrared radiation from hot cones on cool conifers attracts seed-feeding insects

2008 ◽  
Vol 276 (1657) ◽  
pp. 649-655 ◽  
Author(s):  
Stephen Takács ◽  
Hannah Bottomley ◽  
Iisak Andreller ◽  
Tracy Zaradnik ◽  
Joseph Schwarz ◽  
...  
Keyword(s):  
Long Range ◽  
Infrared Radiation ◽  
Host Finding ◽  
Mast Seeding ◽  
Experimental Ir ◽  
Ir Radiation ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed

Foraging animals use diverse cues to locate resources. Common foraging cues have visual, auditory, olfactory, tactile or gustatory characteristics. Here, we show a foraging herbivore using infrared (IR) radiation from living plants as a host-finding cue. We present data revealing that (i) conifer cones are warmer and emit more near-, mid- and long-range IR radiation than needles, (ii) cone-feeding western conifer seed bugs, Leptoglossus occidentalis (Hemiptera: Coreidae), possess IR receptive organs and orient towards experimental IR cues, and (iii) occlusion of the insects' IR receptors impairs IR perception. The conifers' cost of attracting cone-feeding insects may be offset by occasional mast seeding resulting in cone crops too large to be effectively exploited by herbivores.

GENERATION AND PROPERTIES OF INFRARED RADIATION

2019 ◽  
Vol 6 (2) ◽  
pp. 101-137
Author(s):  
RUSTAM KHAKIMOVICH RAKHIMOV
Keyword(s):  
Electromagnetic Radiation ◽  
Infrared Radiation ◽  
Radiation Spectrum ◽  
Laws Of Nature ◽  
Primary Source ◽  
Ceramic Materials ◽  
Experimental Results ◽  
Ir Radiation ◽  
Scattering Of Light

The article presents the main basic laws of nature and modern theories of the nature of electromagnetic radiation, its generation, characteristics, and laws of reflection, absorption and scattering of light. The principle of transformation of the radiation spectrum of the primary source using the developed ceramic materials are shown, as well as experimental results of the interaction of IR radiation with matter and various mechanisms of influence on various objects and processes are described.

FIRST FINDING OF WESTERN CONIFER SEED BUG LEPTOGLOSSUS OCCIDENTALIS HEID. (HETEROPTERA, COREIDAE) IN ARMENIA

2021 ◽  
Vol 14 (2) ◽  
pp. 52-55
Author(s):  
M. Yu. Kalashian ◽  
T. L. Ghrejyan ◽  
G. H. Karagyan
Keyword(s):  
First Finding ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed ◽  
Western Conifer Seed Bug

Data on the first registration of conifer seed bug Leptoglossus occidentalis in Armenia are presented. Penetration of the species from Georgia due to self-dependent expansion or unintentional delivery is presumed.

scholarly journals First report of the western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910 (Hemiptera, Coreidae) in Paraguay

2021 ◽  
Vol 8 (2) ◽  
pp. 12-14
Author(s):  
Bolívar R. Garcete-Barrett ◽  
◽  
Sergio D. Rios ◽  
Sergio Galeano ◽  
◽  
...  
Keyword(s):  
North America ◽  
Western North America ◽  
First Report ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed ◽  
First Time ◽  
Western Conifer Seed Bug

The Western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910, native to western North America and in ongoing worldwide expansion, is recorded from Paraguay for the first time.

scholarly journals Infrared Radiation Assisted Stokes’ Law Based Synthesis and Optical Characterization of ZnS Nanoparticles

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Beer Pal Singh ◽  
Ravish Kumar Upadhyay ◽  
Rakesh Kumar ◽  
Kamna Yadav ◽  
Hector I. Areizaga-Martinez
Keyword(s):  
Infrared Radiation ◽  
Zinc Nitrate ◽  
Ambient Conditions ◽  
X Ray Diffraction ◽  
Zns Nanoparticles ◽  
Ir Radiation ◽  
Phase Crystal ◽  
Free Body ◽  
Quiescent Fluid

The strategy and technique exploited in the synthesis of nanostructure materials have an explicit effect on the nucleation, growth, and properties of product materials. Nanoparticles of zinc sulfide (ZnS) have been synthesized by new infrared radiation (IR) assisted and Stokes’ law based controlled bottom-up approach without using any capping agent and stirring. IR has been used for heating the reaction surface designed in accordance with the well-known Stokes law for a free body falling in a quiescent fluid for the synthesis of ZnS nanoparticles. The desired concentration of aqueous solutions of zinc nitrate (Zn(NO3)2·4H2O) and thioacetamide (CH3CSNH2) was reacted in a controlled manner by IR radiation heating at the reaction area (top layer of reactants solution) of the solution which results in the formation of ZnS nanoparticles at ambient conditions following Stokes’ law for a free body falling in a quiescent fluid. The phase, crystal structure, and particle size of as-synthesized nanoparticles were studied by X-ray diffraction (XRD). The optical properties of as-synthesized ZnS nanoparticles were studied by means of optical absorption spectroscopic measurements. The optical energy band gap and the nature of transition have been studied using the well-known Tauc relation with the help of absorption spectra of as-synthesized ZnS nanoparticles.

scholarly journals First record of Leptoglossus occidentalis (Heteroptera: Coreidae) in Greece

2017 ◽  
Vol 20 (2) ◽  
pp. 83 ◽  
Author(s):  
P. V. Petrakis
Keyword(s):  
First Record ◽  
Wide Distribution ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed ◽  
First Time ◽  
Western Conifer Seed Bug

The Nearctic coreid Leptoglossus occidentalis Heidemann 1910 (Hemiptera: Coreidae) known as the Western Conifer Seed Bug, is recorded for the first time in Greece. This highly dispersible species is well established in Europe and was collected by the authors in various areas of continental Greece (Central Evia, Attica and North Peloponnisos), suggesting a wide distribution in this country.

scholarly journals Attenuation of Infrared Radiation When Passing Through a Water Curtain

2017 ◽  
Vol 12 (1) ◽  
pp. 1-8
Author(s):  
Dalibor Balner ◽  
Karla Barčová ◽  
Michal Dostál
Keyword(s):  
Radiation Intensity ◽  
Infrared Radiation ◽  
Radiation Source ◽  
Water Mist ◽  
Water Droplets ◽  
Spray Characteristics ◽  
Ir Radiation ◽  
Water Curtain

Abstract This article focuses on the interaction of infrared (IR) radiation with water droplets. The main objective of the article is the production of water mist in order of evaluation the reduction in intensity of IR radiation. In the experiments described in this paper, a set of five different nozzles was used with various spray characteristics. The respective nozzles were gradually located between the IR radiation source and a detector and the attenuation of IR radiation was assessed. The reduction in IR radiation intensity was determined and IR radiation transmittance was calculated for the respective tested nozzles.

scholarly journals First Record of the Western Conifer Seed Bug, Leptoglossus occidentalis Heidemann (Heteroptera: Coreidae) in Korea

2012 ◽  
Vol 21 (8) ◽  
pp. 1009-1013 ◽  
Author(s):  
Chun-Sik Yoon ◽  
Hyoung-Gon Kim ◽  
Jong-Dae Park ◽  
Won-Young Choi ◽  
Hyeok-Jae Choi ◽  
...  
Keyword(s):  
First Record ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed ◽  
Western Conifer Seed Bug
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