• Open Access close
• Embargo close
• Publications close
• Other research products close
• English close
• Repository of the Czech Academy of ... close

Facultative paedomorphosis is an environmentally induced polymorphism that is well known for many caudate species including newts. Although facultative paedomorphosis has been documented in some smooth-newt populations, records of entirely paedomorphic populations outside the Balkans are limited. Here we present the first evidence of a paedomorphic population of the smooth newt in the Czech Republic with discussion of potential causes that need to be further tested. Acta Herpetologica, Vol 8 No 1 (2013)

The international collaboration designing and constructingthe Deep Underground Neutrino Experiment (DUNE) at the Long-BaselineNeutrino Facility (LBNF) has developed a two-phase strategy towardthe implementation of this leading-edge, large-scale scienceproject. The 2023 report of the US Particle Physics ProjectPrioritization Panel (P5) reaffirmed this vision and stronglyendorsed DUNE Phase I and Phase II, as did the European Strategy forParticle Physics. While the construction of the DUNE Phase I is wellunderway, this White Paper focuses on DUNE Phase II planning. DUNEPhase-II consists of a third and fourth far detector (FD) module, anupgraded near detector complex, and an enhanced 2.1 MW beam. Thefourth FD module is conceived as a “Module of Opportunity”, aimedat expanding the physics opportunities, in addition to supportingthe core DUNE science program, with more advanced technologies. Thisdocument highlights the increased science opportunities offered bythe DUNE Phase II near and far detectors, including long-baselineneutrino oscillation physics, neutrino astrophysics, and physicsbeyond the standard model.

Microalgae form a wide group of photosynthetic microorganisms, which includes prokaryotic cyanobacteria (e.g. genus Arthrospira) as well as eukaryotic unicellular algae (e.g. genus Chlorella). Microalgae can be regarded as microplants able to convert carbon dioxide and water into organic compounds via photosynthesis. Nevertheless, comparing to higher plants (agricultural crops) the microalgae have much higher areal productivities, high content of proteins, vitamins, antioxidants, polyunsaturated fatty acids and other health-promoting components. Moreover, they can be produced in non-arable areas requiring low-cost inputs. To reach high productivities of microalgal cultures, it is necessary to supply them with sufficient illumination, carbon dioxide and minerals in culturing media. Nowadays microalgae for human and/or animal nutrition are produced in different types of photobioreactors where previously mentioned suitable conditions are ensured along with appropriate mixing and oxygen release. In order to decrease the cultivation cost of microalgae, it was proven that different kinds of flue gasses can be used as a carbon dioxide source, sunlight is the source of energy (illumination) and in some cases suitable waste water can be used as the source of mineral nutrients. Considering current state of knowledge, Arthrospira (spirulina, often rated among superfoods) seems to be the most promising microalga for widespread cultivation in large scale as for its cultivation and harvesting no expensive technologies are needed.

For the purposes of trace analysis of 1,4-androstadiene-3,17-dione (ADD), 1,4-androstadiene-3-one-17β-ol (Boldenone) and 17-β-estradiol in water, waste water, soil and for the further phytosterols transformation studies the enolisation-silylation reaction was studied using MSTFA and BSTFA with different catalysts as derivatization reagents. The different reaction conditions and stability of the products was also studied using GC-MS technique.

The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/psi vector mesons off proton targets in ultra-peripheral p-Pb collisions at a centre-of-mass energy per nucleon pair =5.02 TeV. The e+e- and mu+mu- decay channels are used to measure the cross section as a function of the rapidity of the J/psi in the range -2.5

A method for the data assimilation of fuel moisture surface observations has been developed for the purpose of incorporation in wildfire forecasting and fire danger rating. In this work, we describe the method itself and also an online computer system that implements the method and combines it with the Real-Time Mesoscale Analysis to track local weather conditions and estimate the fuel moisture content in the state of Colorado. We discuss the construction of the system and future development.

The new mineral theuerdankite, ideally Ag3AsO4, was found in the Alter Theuerdank Mine, Beerberg, St. Andreasberg, Goslar District, Lower Saxony, Germany. Theuerdankite occurs as aggregates of anhedral grains up to 3 mm in size, growing in cavities of strongly supergene-weathered material consisting of native silver and chlorargyrite (but with calcite present). In this work the mineral's structure and its properties were studied and the results are presented.

Volatile organic compounds (VOC) emitted in industrial gases can be eliminated applying the catalytic total oxidation. We found high catalytic activity of the Co-Mn-Al mixed oxides, obtained by heating of the coprecipitated layered double hydroxide (LDH) precursor, in the ethanol total oxidation [1]. Activity of this catalyst was remarkably increased by addition of small amount of the potassium promoter. The catalysts prepared by pelletizing the powdered material contained high amounts of expensive cobalt, which was not fully utilized in the catalytic reaction. Therefore, we focused on preparation of supported catalysts with lower concentration of active components placed exclusively in the outer shell of the support pellets. In the present study, we applied the method of impregnation using acidic solution of metal salts in combination with a support having basic properties that could limit penetration of active components into the support pellets.

Potassium promoted Co-Mn-Al mixed oxide catalysts belong to active catalysts forcatalytic N2O decomposition [1] . Many factors can influence catalytic activity of prepared catalyst. Therefore, in this study the effect of calcination temperature on physico-chemical properties and catalytic activity of K/Co4MnAlOx mixed oxide wasinvestigated.

The final ATLAS Run 1 measurements of Higgs boson production and couplings in the decay channel H→ZZ*→ℓ+ℓ-ℓ′+ℓ′-, where ℓ, ℓ′=e or μ, are presented. These measurements were performed using pp collision data corresponding to integrated luminosities of 4.5 and 20.3 fb-1 at center-of-mass energies of 7 and 8 TeV, respectively, recorded with the ATLAS detector at the LHC. The H→ZZ*→4ℓ signal is observed with a significance of 8.1 standard deviations, with an expectation of 6.2 standard deviations, at mH=125.36 GeV, the combined ATLAS measurement of the Higgs boson mass from the H→γγ and H→ZZ*→4ℓ channels. The production rate relative to the Standard Model expectation, the signal strength, is measured in four different production categories in the H→ZZ*→4ℓ channel. The measured signal strength, at this mass, and with all categories combined, is 1.44-0.33+0.40.\n