Search results for "NIP"
showing 10 items of 775 documents
Le potenzialità evolutive della relazione nonni-nipoti in regime di affidamento
2008
Non previsto dalla rivista
What is Alloxysta fulviceps (Curtis, 1838) (Hymenoptera: Cynipoidea:Figitidae: Charipinae)?
2011
Pujade-Villar, J., Ferrer-Suay, M., Selfa, J. and Alonso-Zarazaga, M.A. 2011. What is Alloxysta fulviceps (Curtis, 1838) (Hymenoptera: Cynipoidea: Figitidae: Charipinae)?. Memoirs of Museum Victoria 68: 67–70. The validity of Alloxysta fulviceps (Curtis, 1838) and its synonymies have been examined. After studying the type series and the taxonomic history of this species, we conclude that the lectotype was wrongly designated. A new lectotype is designated and A. fulviceps is synonymised with A. victrix (Westwood, 1833).
Lake restoration influences nutritional quality of algae and consequently Daphnia biomass
2020
AbstractFood quality is one of the key factors influencing zooplankton population dynamics. Eutrophication drives phytoplankton communities toward the dominance of cyanobacteria, which means a decrease in the availability of sterols and long-chain polyunsaturated fatty acids (EPA and DHA). The effects of different restoration measures on the nutritional quality of the phytoplankton community and subsequent impacts on zooplankton biomass have rarely been considered. We analyzed the nutritional quality of phytoplankton in the eutrophic Lake Vesijärvi in southern Finland over a 37-year period, and studied the impacts of two restoration measures, biomanipulation and hypolimnetic aeration, on th…
Design of PNIPAAM covalently grafted on halloysite nanotubes as a support for metal-based catalysts
2016
A thermo-responsive polymer such as poly(N-isopropylacrylamide) (PNIPAAM) was covalently grafted on the external surface of halloysite nanotubes (HNTs) by means of microwave irradiation. This nanomaterial was used as a support and stabilizer for palladium nanoparticles. The obtained HNT–PNIPAAM/PdNPs was characterized by means of TGA, SEM, EDS and TEM analyses. The palladium content of the catalyst was estimated to be 0.4 wt%. The stability of the catalytic material at different temperatures (below and above the PNIPAAM lower critical solution temperature) was tested in the Suzuki reaction under microwave irradiation. In addition, TEM analysis after five consecutive runs was performed. The …
El macabro vodevil de Copenhague
2010
El treball social davanta la crisis
2010
The economic crisis is a time when the social sector professional has to live up to expectations by informing, raising awareness, helping with self-organization and mobilisation from our privileged position as intermediaries with the people, honouring our ethical obligation to fight for the social rights of the underprivileged and defending them. One cannot understand a social worker still managing to remain faithful to their ethical principles while not participating in denunciation and campaigning groups and not having motives for getting involved in the denunciation protests and mobilizations taking place all over the land today.
Phylogeny of the parasitic wasp subfamily Charipinae (Hymenoptera, Cynipoidea, Figitidae)
2007
The Charipinae are a major group of hyperparasitoids of Hemiptera. Here, we present the first cladistic analysis of this subfamily's internal relationships, based on 96 morphological characters of adults. The data matrix was analysed using uniformly weighted parsimony. The effects of using alternative weighting schemes were explored by performing additional searches employing implied weights criteria. One of the caveats of implied weights analysis is that it lacks an objective criterion for selecting the value of the concavity function. In the present study, differential weighting was used to explore the sensitivity of our results to the alternative assumptions made in the analysis and to s…
Tumor Heterogeneity, Single-Cell Sequencing, and Drug Resistance
2016
Tumor heterogeneity has been compared with Darwinian evolution and survival of the fittest. The evolutionary ecosystem of tumors consisting of heterogeneous tumor cell populations represents a considerable challenge to tumor therapy, since all genetically and phenotypically different subpopulations have to be efficiently killed by therapy. Otherwise, even small surviving subpopulations may cause repopulation and refractory tumors. Single-cell sequencing allows for a better understanding of the genomic principles of tumor heterogeneity and represents the basis for more successful tumor treatments. The isolation and sequencing of single tumor cells still represents a considerable technical ch…
Toward completion of the Earth’s proteome: an update a decade later
2017
Protein databases are steadily growing driven by the spread of new more efficient sequencing techniques. This growth is dominated by an increase in redundancy (homologous proteins with various degrees of sequence similarity) and by the incapability to process and curate sequence entries as fast as they are created. To understand these trends and aid bioinformatic resources that might be compromised by the increasing size of the protein sequence databases, we have created a less-redundant protein data set. In parallel, we analyzed the evolution of protein sequence databases in terms of size and redundancy. While the SwissProt database has decelerated its growth mostly because of a focus on i…
An AC-assisted single-nanowire electromechanical switch
2013
A unique two-source controlled nanoelectromechanical switch has been assembled from individual, single-clamped Ge nanowires. The switching behaviour was achieved by superimposing the control signals of specific frequencies to the electrostatic potential of the output terminals, eliminating the need for an additional gate electrode. Using an in situ manipulation technique inside a scanning electron microscope, we demonstrate that the pull-out force required to overcome adhesion at the contact can be significantly reduced by exciting mechanical resonant modes within the nanowire.