152 research outputs found
BAT SURVEY ALONG THE MISSOURI RIVER IN CENTRAL SOUTH DAKOTA
ats are efficient predators of night-flying insects (Whitaker 1993), particularly in urban, agricultural, and forested areas in South Dakota (Kiesow 2004). In South Dakota, 6 bat species are considered rare and presently monitored by the South Dakota Natural Heritage Program (SDNHP; South Dakota Natural Heritage Program 2002). Because bats serve a vital ecosystem function there is an increased need to conserve bats and their habitats. Hence, the objectives of this project were to determine bat species richness along the Missouri River in central South Dakota. We conducted surveys of bats using mist-nets and acoustic detection from early May to early October 2003- 2005.
During this study, we documented the likely importance of riparian corridors to bats in the plains region and believe the Missouri River may serve as a migration corridor for many bat species
Consumptive Coagulopathy as Biochemical Mechanism in Oxygen Toxicity and its Enhancement by Lead(II) Ions
Peer Reviewe
Electroluminescent Characteristics of DBPPV–ZnO Nanocomposite Polymer Light Emitting Devices
We have demonstrated that fabrication and characterization of nanocomposite polymer light emitting devices with metal Zinc Oxide (ZnO) nanoparticles and 2,3-dibutoxy-1,4-poly(phenylenevinylene) (DBPPV). The current and luminance characteristics of devices with ZnO nanoparticles are much better than those of device with pure DBPPV. Optimized maximum luminance efficiencies of DBPPV–ZnO (3:1 wt%) before annealing (1.78 cd/A) and after annealing (2.45 cd/A) having a brightness 643 and 776 cd/m2at a current density of 36.16 and 31.67 mA/cm2are observed, respectively. Current density–voltage and brightness–voltage characteristics indicate that addition of ZnO nanoparticles can facilitate electrical injection and charge transport. The thermal annealing is thought to result in the formation of an interfacial layer between emissive polymer film and cathode
Surface Plasmon Polariton Assisted Optical Switching in Noble Metal Nanoparticle Systems: A Sub-Band Gap Approach
In a proposed book chapter surface plasmon polariton assisted optical
switching in noble metal nanoparticle systems is discussed in the sub-band gap
formalism.Comment: 34 page, 13 figures, Submitted as Book chapter in The Annual Reviews
in Plasmonics, edited by Professor Chris D. Geddes. Springer Scinec
BAT SURVEY ALONG THE MISSOURI RIVER IN CENTRAL SOUTH DAKOTA
ats are efficient predators of night-flying insects (Whitaker 1993), particularly in urban, agricultural, and forested areas in South Dakota (Kiesow 2004). In South Dakota, 6 bat species are considered rare and presently monitored by the South Dakota Natural Heritage Program (SDNHP; South Dakota Natural Heritage Program 2002). Because bats serve a vital ecosystem function there is an increased need to conserve bats and their habitats. Hence, the objectives of this project were to determine bat species richness along the Missouri River in central South Dakota. We conducted surveys of bats using mist-nets and acoustic detection from early May to early October 2003- 2005.
During this study, we documented the likely importance of riparian corridors to bats in the plains region and believe the Missouri River may serve as a migration corridor for many bat species
The autobiography as a guidance technique in the secondary school
Le second volet relatif à l’enseignement concerne les méthodes et contenus des leçons qui en font l’objet. Les professeurs issus de formation académique parviennent-ils à se détacher du modèle artistique ou ne font-ils que le reproduire, sans pour autant que soit nécessairement tenue dans l’école une classe du modèle ? L’analyse des conditions d’enseignement permet de savoir si les écoles gratuites de dessin présentent ou non une certaine originalité pédagogique, par rapport à ce qui se prati..
Deposition and properties of plasma polymer films made from thiophenes
Thin plasma polymer films were deposited by plasma polymerisation of thiophene (C4H4S) and iodothiophene (C4H4Si) Optical emission spectroscopy (OES) was applied during film deposition to characterise the plasma at various energy input levels and various monomer partial pressures. The electrical direct current conductivity for films deposited at various preparation conditions were calculated based on current voltage relationships which were observed. The maximum conductivity of an undoped thiophene film was sigma ~ 1.3 X 10 (exp -6) omega (exp -1) cm (exp -1)
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