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1.
The impact of gravel extraction on hyporheic ecology: a case study of the Bača river (W Slovenia)
Nataša Mori, 2008, doktorska disertacija

Najdeno v: ključnih besedah
Povzetek najdenega: ...organic matter, POM, fine sediment, ETS activity, electron transport system, sediments, Nematoda, Harpacticoida, Chironomidae, gravel...
Ključne besede: hyporheic invertebrate, Soča river, Bača river, hyporheic biota, benthic organisms, particulate organic matter, POM, fine sediment, ETS activity, electron transport system, sediments, Nematoda, Harpacticoida, Chironomidae, gravel extraction, environmental impact assessment
Objavljeno: 19.02.2015; Ogledov: 3214; Prenosov: 272
.pdf Polno besedilo (1,14 MB)
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2.
Regional biodiversity and seasonal dynamics of the bacterial communities in karstic springs of Slovenia
Maja Opalički Slabe, 2019, doktorska disertacija

Opis: Information on groundwater’s natural bacterial communities is important for evaluating pristine groundwater’s quality, as environmental changes potentially lead to alterations in bacterial community structures. In four seasons, 15 hypothetically pristine springs across five karst eco-regions in Slovenia (Central Europe) were analysed during their low discharge, and their basic physical and chemical parameters were recorded. The diversity of bacterial community structures was assessed with a terminal restriction fragment length polymorphism fingerprinting method. Total cell counts as bacterial abundance and electron transport system activity as bacterial respiratory activity were used for quantitative evaluation of bacterial communities. To detect anthropogenic pollution, spring water was tested by the cultivation of coliform bacteria and Escherichia coli (E. coli). Results indicate distinct regional differences in environmental parameters, bacterial respiratory activity, presence of coliforms and E. coli, bacterial abundances, and qualitative bacterial community structures, but there were no regional differences in the numbers of operational taxonomic units and biodiversity indices (Shannon-Wiener’s and Simpson’s diversity index, Buzas and Gibson’s evenness). The analysis of seasonal environmental parameters showed significant differences in dissolved organic carbon and pH, and also significant changes in bacterial respiratory activity and abundances, as well as differences in bacterial community structures, the numbers of operational taxonomic units, and biodiversity indices. No seasonal variations were shown for coliforms and E. coli. Despite seasonal oscillations, regional differences prevailed among five karst eco-regions and indicate a significant influence on the qualitative and quantitative aspects of groundwater bacterial community structures. The study confirmed both regional and seasonal differences in groundwater bacterial community structures, which should be included in further sustainable management plans of the aquifers.
Najdeno v: ključnih besedah
Povzetek najdenega: ...Total cell counts as bacterial abundance and electron transport system activity as bacterial respiratory activity...
Ključne besede: karst springs, bacterial community structure (BCS), terminal restriction fragment length polymorphism (T-RFLP), total cell counts (TCC), electron transport system activity (ETSA)
Objavljeno: 26.06.2019; Ogledov: 1436; Prenosov: 63
.pdf Polno besedilo (3,76 MB)

3.
The experimental X-ray structure of the new diheme cytochrome type c from Shewanella baltica OS155 sb-DHC
Matteo De March, G. Di Rocco, S. Geremia, 2012, zaključena znanstvena zbirka podatkov ali korpus

Najdeno v: ključnih besedah
Povzetek najdenega: ...crystal structures, electron transport, Shewanella baltica OS155, Escherichia coli...
Ključne besede: crystal structures, electron transport, Shewanella baltica OS155, Escherichia coli
Objavljeno: 16.03.2021; Ogledov: 274; Prenosov: 1
URL Polno besedilo (0,00 KB)

4.
Electron transfer complexes
Matteo De March, Rita De Zorzi, A. Casini, Luigi Messori, S. Geremia, N. Demitri, Chiara Gabbiani, A. Guerri, 2012, zaključena znanstvena zbirka podatkov ali korpus

Najdeno v: ključnih besedah
Povzetek najdenega: ...crystal structures, electron transport, Equus caballus, mutations...
Ključne besede: crystal structures, electron transport, Equus caballus, mutations
Objavljeno: 17.03.2021; Ogledov: 285; Prenosov: 1
URL Polno besedilo (0,00 KB)

5.
Electron transfer complexes
Matteo De March, Rita De Zorzi, N. Demitri, Chiara Gabbiani, A. Guerri, A. Casini, Luigi Messori, S. Geremia, 2012, zaključena znanstvena zbirka podatkov ali korpus

Najdeno v: ključnih besedah
Povzetek najdenega: ...electron transfer complexes, electron transport, Equus caballus, mutations...
Ključne besede: electron transfer complexes, electron transport, Equus caballus, mutations
Objavljeno: 17.03.2021; Ogledov: 263; Prenosov: 1
URL Polno besedilo (0,00 KB)

6.
Ice cloud formation potential by free tropospheric particles from long-range transport over the Northern Atlantic Ocean
Claudio Mazzoleni, Katja Džepina, Kendra Wright, R. Chris Owen, Paulo Fialho, Lynn R. Mazzoleni, Swarup China, Peter A. Alpert, Bo Zhang, Simeon K. Schum, 2017, izvirni znanstveni članek

Opis: Long-range transported free tropospheric particles can play a significant role on heterogeneous ice nucleation. Using optical and electron microscopy we examine the physicochemical characteristics of ice nucleating particles (INPs). Particles were collected on substrates from the free troposphere at the remote Pico Mountain Observatory in the Azores Islands, after long-range transport and aging over the Atlantic Ocean. We investigate four specific events to study the ice formation potential by the collected particles with different ages and transport patterns. We use single-particle analysis, as well as bulk analysis to characterize particle populations. Both analyses show substantial differences in particle composition between samples from the four events; in addition, single-particle microscopy analysis indicates that most particles are coated by organic material. The identified INPs contained mixtures of dust, aged sea salt and soot, and organic material acquired either at the source or during transport. The temperature and relative humidity (RH) at which ice formed, varied only by 5% between samples, despite differences in particle composition, sources, and transport patterns. We hypothesize that this small variation in the onset RH may be due to the coating material on the particles. This study underscores and motivates the need to further investigate how long-range transported and atmospherically aged free tropospheric particles impact ice cloud formation.
Najdeno v: ključnih besedah
Povzetek najdenega: ...on heterogeneous ice nucleation. Using optical and electron microscopy we examine the physicochemical characteristics of...
Ključne besede: atmospheric aerosols, ice nucleating particles, long-range transport, optical microscopy, electron microscopy, Pico Mountain Observatory
Objavljeno: 11.04.2021; Ogledov: 171; Prenosov: 8
URL Polno besedilo (0,00 KB)
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