Bis[(E)-4-bromo-2-(methoxy­imino­meth­yl)phenolato-κ2 N,O 1]copper(II)

In the title centrosymmetric mononuclear copper(II) complex, [Cu(C8H7BrNO2)2], the CuII atom, lying on an inversion centre, is four-coordinated in a trans-CuN2O2 square-planar geometry by two phenolate O atoms and two oxime N atoms from two symmetry-related N,O-bidentate oxime-type ligands. Inter­molecular C—H⋯O hydrogen bonds link neighbouring mol­ecules into a one-dimensional supra­molecular structure with an R 2 2(14) ring motif. This structure is further stabilized by π–π stacking inter­actions between adjacent benzene rings [centroid–centroid distance = 3.862 (1) Å]

2,2′-[1,1′-(Octane-1,8-diyldioxy­dinitrilo)diethyl­idyne]diphenol

The title compound, C24H32N2O4, has a crystallographic inversion centre at the mid-point of the central C—C bond. At each end of the mol­ecule, intra­molecular O—H⋯N hydrogen bonds generate six-membered S(6) ring motifs. The crystal structure is stabilized by pairs of weak inter­molecular C—H⋯O hydrogen bonds that link neighbouring mol­ecules into R 2 2(40) ring motifs, which in turn form infinite one-dimensional supra­molecular ribbon structures

Bis[(E)-4-bromo-2-(ethoxy­imino­meth­yl)phenolato-κ2 N,O 1]copper(II)

The title compound, [Cu(C9H9BrNO2)2], is a centrosymmetric mononuclear copper(II) complex. The Cu atom is four-coordinated in a trans-CuN2O2 square-planar geometry by two phenolate O and two oxime N atoms from two symmetry-related N,O-bidentate (E)-4-bromo-2-(ethoxy­imino­meth­yl)phenolate oxime-type ligands. An inter­esting feature of the crystal structure is the centrosymmetric inter­molecular Cu⋯O inter­action [3.382 (1) Å], which establishes an infinite chain structure along the b axis

4-({4-[1-(Methoxy­imino)eth­yl]anilino}(phen­yl)methyl­ene)-3-methyl-2-phenyl-1H-pyrazol-5(4H)-one

In the title compound, C26H24N4O2, the dihedral angles between the central pyrazole ring and the other three benzene rings are 40.02 (3), 77.51 (5) and 55.72 (3)°. A strong intra­molecular N—H⋯O hydrogen bond forms a six-membered ring with an S(6) motif. In the crystal structure, a weak inter­molecular C—H⋯N inter­action with graph-set motif R 2 2(8) and C—H⋯O hydrogen bonds link each mol­ecule to three others, forming an infinite two-dimensional supra­molecular structure

4-Bromo-2-({4-[(hy­droxy­imino)­meth­yl]phen­yl}imino­meth­yl)phenol

In the title compound, C14H11BrN2O2, the mean planes of the two benzene rings are almost parallel to each other, making a dihedral angle of 4.09 (1)°. An intra­molecular O—H⋯N hydrogen bond occurs. In the crystal, inter­molecular O—H⋯N and C—H⋯O hydrogen bonds link the mol­ecules into a chain-like supra­molecular structure

2,2′-[Octane-1,8-diyldioxy­bis(nitrilo­methyl­idyne)]diphenol

The complete mol­ecule of the title compound, C22H28N2O4, is generated by a crystallographic inversion centre at the mid-point of the central C—C bond. The two benzene rings are parallel to each other with a perpendicular inter­planar spacing of 1.488 (2) Å. Intra­molecular O—H⋯N hydrogen bonds generate two six-membered rings with S(6) motifs. In the crystal, weak inter­molecular C—H⋯O hydrogen bonds link neighbouring mol­ecules into an infinite three-dimensional network, which is further stabilized by weak C—H⋯π inter­actions

{2,2′-[1,1′-(Ethyl­enedioxy­dinitrilo)diethyl­idyne]di-1-naphtholato}copper(II)

The title complex, [Cu(C26H22N2O4)], is isostructural with its Ni analogue. All intramolecular distances and angles are very similar for the two structures, whereas the packing of the molecules, including C—H⋯O and C—H⋯π interactions, are slightly different

2,2′-[1,1′-(Decane-1,10-diyldioxy­dinitrilo)diethyl­idyne]diphenol

The salen-type bis-oxime title compound, C26H36N2O4, lies about a crystallographic inversion centre. Classical intra­molecular O—H⋯N hydrogen bonds generate two S(6) ring motifs. In the crystal structure, pairs of weak inter­molecular C—H⋯O hydrogen bonds link adjacent mol­ecules into an infinite one-dimensional supra­molecular structure

Fugitive emissions in Moravian-Silesian Region

Import 22/07/2015Predložená práca sa zaoberá fugitívnymi emisiami na území priemyselnej aglomerácie Ostravska. Fugitívny prach predstavuje hlavnú časť atmosférických aerosólov, zvýšená pozornosť je mu venovaná kvôli významným dopadom na zmenu klímy, kvalitu ovzdušia a zdravie ľudí a ekosystémov. Hlavná časť práce je venovaná štúdiu vertikálnej distribúcie PM1 vo výške až 500 m n. m., ktorá bola sledovaná vo vybraných lokalitách Ostravy v jarnom a letnom období 2014, za použitia metódy merania balónom. Pozornosť bola venovaná závislosti koncentrácie PM1 na výške a meteorologických podmienkach. Ďalej bolo zisťované rozloženie organických látok vo vertikálnych profiloch atmosféry v najzaťaženejších miestach Ostravy použitím metódy Py-GC/MS a pomocou matematických metód boli identifikované príspevky zdrojov znečistenia.This thesis deals with the topic of fugitive emissions in the industrial agglomeration of Ostrava region. Fugitive dust is a major part of atmospheric aerosols, increased attention is given to it due to its significant impact on climate change, air quality and human health, and ecosystems. The main part is focused on the study of the vertical distribution of PM1 of up to 500 m a. s. l. which was monitored at selected locations during spring and summer seasons of 2014 using the balloon measuring method. Attention was given to influence of meteorological parameters on PM1 concentrations. Furthermore, distribution of organic matter in the vertical profiles of the atmosphere in the most exposed places was studied using the Py-GC/MS and, using the mathematical methods, contributions of the sources of pollution were identified.Prezenční546 - Institut environmentálního inženýrstvívýborn

Direct Measurements of the Branching Fractions for D0→K−e+νeD^0 \to K^-e^+\nu_e and D0→π−e+νeD^0 \to \pi^-e^+\nu_e and Determinations of the Form Factors f+K(0)f_{+}^{K}(0) and f+π(0)f^{\pi}_{+}(0)

The absolute branching fractions for the decays $D^0 \to K^-e ^+\nu_e$ and $D^0 \to \pi^-e^+\nu_e$ are determined using $7584\pm 198 \pm 341$ singly tagged $\bar D^0$ sample from the data collected around 3.773 GeV with the BES-II detector at the BEPC. In the system recoiling against the singly tagged $\bar D^0$ meson, $104.0\pm 10.9$ events for $D^0 \to K^-e ^+\nu_e$ and $9.0 \pm 3.6$ events for $D^0 \to \pi^-e^+\nu_e$ decays are observed. Those yield the absolute branching fractions to be $BF(D^0 \to K^-e^+\nu_e)=(3.82 \pm 0.40\pm 0.27)$ and $BF(D^0 \to \pi^-e^+\nu_e)=(0.33 \pm 0.13\pm 0.03)$. The vector form factors are determined to be $|f^K_+(0)| = 0.78 \pm 0.04 \pm 0.03$ and $|f^{\pi}_+(0)| = 0.73 \pm 0.14 \pm 0.06$. The ratio of the two form factors is measured to be $|f^{\pi}_+(0)/f^K_+(0)|= 0.93 \pm 0.19 \pm 0.07$.Comment: 6 pages, 5 figure