Uporedna analiza izoformi α-amilaze iz srednjeg creva larvi Cerambyx cerdo L. (Coleoptera: Cerambycidae) iz prirode i gajenih na veštačkoj podlozi

alpha-Amylase isoforms of Cerambyx cerdo larvae from the wild (ML and SL) and reared in the laboratory (ADL) were compared. Three amylase isoforms were presented in the SL and ML extracts while two isoforms were presented in the ADL according to zymogram after isoelectric focusing (IEF). All C. cerdo amylase isoforms were acidic proteins (pI lt 3.5). Seven amylase isoforms (ACC 1-7) from the midgut of C. cerdo larvae were found in the ML midgut extract, six in the SL extract, and four in the ADL extract according to native PAGE zymogram. The ADL amylase had the highest activity. All crude midgut extracts of C. cerdo larvae were fractionated on a Superose 12 HR column. The molecular mass of the ACC was estimated to be 34 kDa.Upoređene su izoforme α-amilaze larvi Cerambyx cerdo sakupljenih iz prirode (ML i SL) i gajenih na veštačkoj podlozi u laboratoriji (ADL). Zimogramskom detekcijom posle IEF-a po tri izoforme su detektovane u ML i SL ekstraktima, a u ADL dve izoforme. Sve amilazne izoforme iz C. cerdo su bile kisele (pI lt 3.5). Zimogramskom detekcijom posle nativne elektroforeze sedam izoformi je detektovano u ML ekstraktu, šest u SL ekstraktu i četiri u ADL ekstraktu. Najveća amilazna aktivnost je detektovana u ADL ekstraktu. Svi ekstrakti srednjih creva larvi C. cerdo su frakcionisani na koloni Superose 12 HR. Molekulska masa ACC-a je bila 34 kDa

Embracing conceptual diversity to integrate power and institutional analysis: Introducing a relational typology

Within environmental governance scholarship, an increasing interest in integrating the study of power with institutional analysis is generating novel theoretical and empirical perspectives for understanding human-environment relationships. The array of different approaches employed to integrate power into institutionalist work promises a range of insights. However, building a cohesive research agenda depends on efforts to grapple with the conceptual and theoretical diversity that characterizes the study of power. To this end, we introduce a typology of relationships between power and institutions. The typology brings together diverse conceptualizations of power and institutions within a common analytical space and situates them around two overarching research questions: How does power shape institutions? And how do institutions shape power? The structure of the typology aids researchers in generating specific, operationalizable research questions within the broader research agenda on power and institutions. In the paper, we describe the theoretical basis for the development of the typology, which draws on political ecology and Bloomington school institutionalism. Then, we employ the typology to organize a review of environmental governance literature on power and institutions. This exercise demonstrates the utility of the typology not only for organizing the currently disjointed body of work on power and institutions but also for identifying new research questions. Furthermore, it facilitates discussions about deeper ontological, epistemological, and methodological challenges associated with bringing together different theoretical approaches. Ultimately, the typology defines pathways for integrating two important disciplines studying environmental governance, political ecology and institutionalism, and facilitates the accumulation of a coherent body of knowledge

Alkali activation of dif ferent type of ash as a production of combustion process

Presented study deals with the final struc ture and radiological properties of different fly-ash based geopolymers. Lig nite fly-ash (lignite Kolubara – Ser bia) and wood fly ash were obtained in combustion process together with commercial fly-ash. Synthesis of the geopolymers was con ducted by mixing fly-ash, sodium silicate solution, NaOH and water. The sam ples were strength ened 60 °C for 48 hours af ter stay ing at room temperature in covering mold for 24 hours. The X-ray dif frac tion, Fou rier trans form in fra red and SAM mea sure ments were conducted on the sam ples af ter 28 days of geopolymerization pro cess. The X-ray dif frac tion measurements of lignite fly-ash sam ples show anhydrite as the main constituent, while wood fly-ash samples consist of cal cite, albite and gypsum minerals. Besides determination of physicochemical properties, the aim of this study was radiological characterization of lignite fly-ash, wood fly-ash and the obtained geopolymer products. Ac tiv ity con cen tra tion of 40 K and radionuclides from the 238 U and 232 Th decay series, in ash sam ples and fly-ash based geopolymers, were determined by means of gamma-ray spectrometry, and the absorbed dose rate, D, and the annual effective dose rate, E, were calcu lated in accordance with the UNSCEAR 2000 report

Polarised Photoluminescence from Surface-Passivated PbS Nanocrystals

Effective surface-passivation of PbS nanocrystals in aqueous colloidal solution has been achieved following treatment with CdS precursors. The resultant photoluminescent emission displays two distinct components, one originating from the absorption band-edge and the other from above the absorption band-edge. We show that both of these components are strongly polarised but display distinctly different behaviours. The polarisation arising from the band-edge shows little dependence on the excitation energy while the polarisation of the above-band-edge component is strongly dependent on the excitation energy. In addition, time resolved polarisation spectroscopy reveals that the above-band-edge polarisation is restricted to the first couple of nanoseconds, while the band-edge polarisation is nearly constant over hundreds of nanoseconds. We recognise an incompatibility between the two different polarisation behaviours, which enables us to identify two distinct types of surface-passivated PbS nanocrystal.Comment: Preprint, 19 pages, 4 figure

SPECTCOL: A new software to combine spectroscopic data and collisional data within VAMDC - Poster.

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Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications

The main goal of this study was the evaluation of physical–chemical, as well as radiological properties of residual materials used for geopolymer synthesis and those final products as a possible application as new materials in a civil engineering industry. Concentration of 40K and radionuclides from the 238U and 232Th decay series in waste precursors, their metaphases and geopolymer samples synthetized by alkali activation were determined together with corresponding absorbed dose rate (D˙) and the annual effective dose rate. Natural activity concentrations in the alkali-activated material (geopolymer) were found to be lower than that of both residual materials and calcined ones

Synchronous fluctuation in broad-band processes and application to the electroencephalographic brain data

We propose phase-like characteristics in the broad-band process and introduce a novel wavelet-based method to analyze fluctuation in synchrony (FIS) in a wide frequency range. We demonstrate FIS between multifractal processes and a modeled dynamical system in phase transition. We then apply the idea to analyze surface scalp electroencephalographic data from normal subjects and traumatic brain-injured (TBI) patients. Our results show that FIS in normal subjects is more pronounced and exhibits more dynamic spatiotemporal patterns. Moreover, we find an intrinsic synchrony-variability relationship underlying these FIS characteristics

BASECOL and VAMDC: A new way to access and manipulate molecular collisional data for interstellar applications

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