Confirmation of bean leaf beetle, Cerotoma trifurcata, feeding on cucurbits

The objective of these studies was to assess the degree to which bean leaf beetle, Cerotoma trifurcata (Forster), will feed on cucurbits. In 2003, we documented an infestation of C. trifurcata in a commercial pumpkin field near Rosemount, MN, USA. To evaluate C. trifurcata feeding on cucurbits, we conducted laboratory no-choice and choice test feeding studies. In the laboratory, C. trifurcata fed most heavily on cotyledon-stage cucumber plants, followed by pumpkin and squash. With soybean plants present, C. trifurcata still fed on cucumber plants. However, C. trifurcata appeared to prefer soybeans until the quality of the soybean plants was diminished through feeding damage. This is the first known report of C. trifurcata feeding on cucurbits. The pest potential of C. trifurcata in cucurbit cropping systems should be further evaluated

Magnetocaloric effect and magnetostructural coupling in Mn0.92Fe0.08CoGe compound

The structural properties of Mn0.92Fe0.08CoGe have been investigated in detail using synchrotron x-ray diffraction in zero and applied pressure (p = 0-10 GPa). A ferromagnetic transition occurs around TC = 300 K and a large magnetic-entropy change -ΔSM = 17.3 J/kg K detected at TC for a field change of ΔB = 5 T. The field dependence of -ΔSM max can be expressed as -ΔSM max ∞ B. At ambient temperature and pressure, Mn0.92Fe0.08CoGe exhibits a co-existence of the orthorhombic TiNiSi-type structure (space group Pnma) and hexagonal Ni2In-type structure (space group P63/mmc). Application of external pressure drives a structure change from the orthorhombic TiNiSi-type structure to the hexagonal Ni2In-type structure. A large anomaly in heat capacity around TC is detected and the Debye temperature θD (=319(±10) K) has been derived from analyses of the low temperature heat capacity, T ≲ 10 K

Photograph of an adult on a pumpkin (‘Magic Lantern’) cotyledon with associated damage

<p><b>Copyright information:</b></p><p>Taken from "Confirmation of bean leaf beetle, , feeding on cucurbits"</p><p>Journal of Insect Science 2004;4():-.</p><p>Published online 20 Feb 2004</p><p>PMCID:PMC455679.</p><p>Copyright © 2004. Open access; copyright is maintained by the authors.</p> Image was taken in a commercial pumpkin field near Rosemount, MN, 13 June 2003

Photograph of the lower surface of a heavily damaged pumpkin (‘Magic Lantern’) cotyledon

<p><b>Copyright information:</b></p><p>Taken from "Confirmation of bean leaf beetle, , feeding on cucurbits"</p><p>Journal of Insect Science 2004;4():-.</p><p>Published online 20 Feb 2004</p><p>PMCID:PMC455679.</p><p>Copyright © 2004. Open access; copyright is maintained by the authors.</p> Image was taken in a commercial pumpkin field near Rosemount, MN, 13 June 200

Photograph of squash (‘Turks Turbin’) (top left), cucumber (‘Marketmore 76’) (bottom center), and pumpkin (‘Magic Lantern’) (top right) plants from the laboratory no-choice feeding study

<p><b>Copyright information:</b></p><p>Taken from "Confirmation of bean leaf beetle, , feeding on cucurbits"</p><p>Journal of Insect Science 2004;4():-.</p><p>Published online 20 Feb 2004</p><p>PMCID:PMC455679.</p><p>Copyright © 2004. Open access; copyright is maintained by the authors.</p> Note the decrease in cotyledon size and increase in intensity of feeding damage from squash to pumpkin to cucumber. Damage to each plant was caused by ten adults over 72 h

Three-step-in-one synthesis of supercapacitor MWCNT superparamagnetic magnetite composite material under flow

Composites of multi-walled carbon nanotubes (MWCNTs) and superparamagnetic magnetite nanoparticles, Fe3O4@MWCNT, were synthesized in DMF in a vortex fluidic device (VFD). This involved in situ generation of the iron oxide nanoparticles by laser ablation of bulk iron metal at 1064 nm using a pulsed laser, over the dynamic thin film in the microfluidic platform. The overall processing is a threestep in one operation: (i) slicing MWCNTs, (ii) generating the superparamagnetic nanoparticles and (iii) decorating them on the surface of the MWCNTs. The Fe3O4@MWCNT composites were characterized by transmission electron microscopy, scanning transmission electron microscope, TG analysis, X-ray diffraction and X-ray photoelectron spectroscopy. They were used as an active electrode for supercapacitor measurements, establishing high gravimetric and areal capacitances of 834 F g–¹ and 1317.7 mF cm–² at a scan rate of 10 mV s–¹ , respectively, which are higher values than those reported using similar materials. In addition, the designer material has a significantly higher specific energy of 115.84 W h kg−¹ at a specific power of 2085 W kg–¹ , thereby showing promise for the material in nextgeneration energy storage devices.Thaar M. D. Alharbi, Ahmed H. M. Al-Antaki, Mahmoud Moussa, Wayne D. Hutchison and Colin L. Rasto