Liikenteen ääniä

Kaupunki. Ohi kulkeva auto ja liikenteen kohinaa.

Liikenteen ääniä kaupungissa

Kaupunki. Liikenteen kohinaa, raitiovaunu kulkee ohi.

Kylän ääniä

Skruv. Talvisen kylän ääniä: askeleita, maton tamppausta, liikenteen ääniä, lasten huutoa ja puron solinaa.

Kaupungin ääniä Tokiosta

Kaupungin ääniä, japanilaisia äänimainoksia, askelia. Tokio

Geoquímica das águas da bacia hidrográfica do Rio Descoberto, Brasília/DF - Brasil

The objective of this paper is to investigate the physical and chemical quality of the water of the Descoberto River during the dry and rainy seasons by measuring pH, temperature, electric conductivity, total dissolved solids, turbidity, color, alkalinity and NO3-, SO4(2-), PO4(3-), NH4+, Cl- and HCO3-, and the elements Sr, Mo, Cd, Y, Ti, Ca, V, Mg, Fe, Si, Ni, Zr, Cu, Al, Cr, Mn, Ba, Co, Zn, P, Na and K. The results showed high concentrations in both seasons, with dilution along the course of the river, minimizing for a while problems that compromise the quality of the water of this source. However, a progressive deterioration can occur due to an increase in the discharge of pollutants, resulting from population growth, agricultural activities and other factors.

Liikenteen ääniä kaupungissa

Kaupunki. Liikenteen kohinaa, raitiovaunu kiertää kehää.

Liikenteen ääniä kaupungissa

Kaupunki. Liikenteen kohinaa, raitiovaunu kulkee ohi.

Kaupungin ääniä, Bissingen

Kaupungin äänimaisemaa: liikennettä, kirkonkellojen soittoa. Bissingen, Saksa.

Pesulan ääniä

Pesulan ääniä, liikenteen ääniä ulkona. Cembra, Italia.

Kaupungin ääniä, Santa Fe

Kaupunki, Santa Fe. Katuhälyä. Englanninkielistä puhetta, miehiä, naisia ja lapsia.

Liikenteen ääniä kaupungissa

Kaupunki. Liikenteen kohinaa, raitiovaunu kulkee ohi kaksi kertaa

Decomposição térmica de complexos de Zn e Cd com isomaleonitriladitiolato (imnt)

Thermal decomposition of [Bu4N]2[Zn(imnt)2] and [M(NH3)2(imnt)] complexes with M = Zn and Cd, and imnt = (bis 1,1-dicyanoethylene-2,2 dithiolate) in inert atmosphere was investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). Pyrolysis studies at different temperatures, 300, 400, 500, and 600 ºC, in N2 atmosphere were performed and the products were characterized by X-ray diffraction (XRD), infrared and Raman spectroscopy, and scanning electron microscopy (SEM). The products were identified as sulfide sub-micron particles, along with amorphous carbon. Particle sizes estimated by SEM were ca. 50 nm for the cationic complexes and 500 nm for the neutral complexes.

Utilização de um eletrodo de grafite-epóxi recoberto com [Zn(FEN)3][tetratris(4-clorofenil) borato]2 sensível a zinco(II) em meio 1,10-fenantrolina como eletrodo indicador em titulações potenciométricas de precipitação

The construction and analytical evaluation of a coated graphite-epoxy electrode sensitive to the zinc-1,10-phenantroline complex based on the [Zn(fen)3][tetrakis(4-chlorophenyl)borate]2 incorporated into a poly(vinylchloride) (PVC) matrix are described. A thin membrane film of this ion-pair, dibutylphthalate (DBPh) and PVC were deposited directly onto an electrically conductive graphite-epoxy support located inside a Perspex® tube. The best PVC polymeric membrane contains 65% (m/m) DBPh, 30% (m/m) PVC and 5% (m/m) of the ion-pair. This electrode shows a response of 19.5 mV dec-1 over the zinc(II) concentration range of 1.0 x 10-5 to 1.0 x 10-3 mol L-1 in 1,10-phenantroline medium, at pH 6.0. The response time was less than 20 seconds and the lifetime of this electrode was more than four months (over 1200 determinations by each polymeric membrane). It was successfully used as an indicator electrode in the potentiometric precipitation titration of zinc(II) ions.

Kaupungin ääniä

Kaupunki. Suurkaupunki. Liikenteen ääniä ja ihmisten puheensorinaa.