Search results for " Macro"

Il Ficus di Villa Garibaldi

2011

Humic Substances: From Supramolecular Aggregation to Fractal Conformation—Is There Time for a New Paradigm?

2023

Natural organic matter, including humic substances (HS), comprises complex secondary structures with no defined covalent chemical bonds and stabilized by inter- and intra-molecular interactions, such as hydrogen bonding, Van der Waal’s forces, and pi-pi interactions. The latest view describes HS aggregates as a hydrogel-like structure comprised by a hydrophobic core of aromatic residues surrounded by polar and amphiphilic molecules akin a self-assembled soft material. A different view is based on the classification of this material as either mass or surface fractals. The former is intended as made by the clustering of macromolecules generating dendritic networks, while the latter have been …

A new political elite in France : the end of professionalization ?

2020

Actes du projet Parcit (Participation et citoyenneté), financé par les MSH Dijon et Besançon, co-dirigé par A. Alexandre-Collier, D. Andolfatto et A. Goujon, 2017-2019; International audience; Who governs? It is this classic question in political science (Dahl, 1961) that this chapter seeks to answer. It is based on a tradition of studying parliamentary elites (Best & Cotta, 2000 & 2007 ; Norris, 1997). It proposes to analyze the sociological make up of the French National Assembly elected in June 2017. Of course, this is not the sociology of government in the strict sense of the executive power but that of the parliamentary Assembly elected by direct universal suffrage and supposed to adop…

Proliferation of gastrointestinal carcinoma cells by T lymphocyte factors interleukin-3 and granulocyte-macrophage colony-stimulating factor

1991

Hematopoietic growth factors have been well characterized by cDNA cloning in recent years. In order to determine the influence of rhGM-CSF and rhIL-3 on epithelial cells of the gastrointestinal tract, their influence on in vitro cultured gastric and pancreas cancer cells was determined. A more than two-fold enhancement of proliferation was observed by IL-3 and GM-CSF in Mz-Sto-1 gastric and 818-4 pancreas carcinoma cells, applying a sensitive microculture system which allows precise quantification. The highest growth rates were obtained adding 1-10 ng/ml of the growth factors, but even picogram amounts were effective. Expression of mRNA for GM-CSF and IL-3 remained undetectable in the cell …

Invasions of the non-indigenous red alga Lophocladia lallemandii (Montagne) F. Schmitz off the Island of Ischia (Tyrrhenian Sea, Italy)

2021

This paper describes the distribution and spread of the non-indigenous red alga Lophocladia lallemandii (Montagne) F. Schmitz along the coast of the Island of Ischia (Tyrrhenian Sea, Italy). Lophocladia lallemandii was monitored through surveys from July 2019 to January 2020 at the Capo Sant’Angelo (Ischia), where L. lallemandii was observed, but not reported, in the years preceding the invasion of the upper rocky infralittoral shore reported here. It is noteworthy that a large portion of the study area is included within one of the two “B no-take” zones of the Marine Protected Area of the “Regno di Nettuno” (“Neptune’s Realm”). During the surveys, the alga was first observed in the middle …

STOP 5: Veselava end moraine, north-western Vidzeme Upland

2014

Calls of the Jungle Crow (Corvus macrorhynchos s. l.) as a taxonomic characterResults of the Himalaya Expeditions of J. Martens, No. 224. - For No. 2…

2000

Summary A discriminant analysis of the call structure completely separates three Corvus taxa (levaillantii and japonensis of the ‘macrorhynchos group’, splendens) inhabiting the southern slopes of the Himalayas (Nepal, Kashmir). The acoustic differences are considered taxonomically relevant, indicating species boundaries. Therefore the Jungle Crows of lower and upper Nepal (contact zone at around 2,000 m) are assigned to two biospecies (C. japonensis and C. levaillantii), as is consistent with morphological, ecological and parasitological data. It appears possible to extrapolate the findings regarding call structure to the systematics of other ‘macrorhynchos’ populations as distant as the R…

An initial study into the suitability of Sicilian ecotypes of Cynodon dactylon (L.) Pers. for turfgrass use

2004

The aim of the study is to evaluate the biodiversity of Cynodon dactylon (L.) Pers. in Sicily (Italy), observing several ecotypes collected in specific areas of the island. The ultimate goal was to identify ecotypes that have the qualitative standards required to establish turfgrasses and/or for specific plant breeding programmes. For each of the 22 bermudagrass ecotypes that were collected from Sicily, leaf texture, stolon internodes length, stolon diameter, turf colour, uniformity and quality rating were the main biometric and qualitative parameters monitored. The speed of recovery was also determined for each ecotype. Interesting variability was recorded in the collected vegetative mater…

Paradiplozoon iraqensis n. sp. (Monogenea: Diplozoinae) from Cyprinion macrostomum (Cyprinidae) in the Tigris River, Iraq

2015

A new species of monogenean diplozoid, Paradiplozoon iraqensis n. sp., from the gills of Cyprinion macrostomum Heckel from the Tigris River in Tikrit, Iraq is described. P. iraqensis n. sp. is distinguished from other species of the genus by the size of plicae on the fore- and hind body, the number of the branches of the intestinal caecum in fore body, intestinal caecum not extending to haptor, the size of the clamps and the morphology of the clamp sclerites, and by the length of the central hooks. Details of the shape and size of eggs, and of the reproductive system and prohaptoral region are provided. The present study raises the number of species of Paradiplozoon recorded in Iraq to 15.

Physiology and genetics of antibiotic production and resistance.

1993

Actinomycetes have the genetic capability to synthesize many different biologically active secondary metabolites and of these compounds, antibiotics predominate in therapeutic and commercial importance. Intensive research often centres on the use of molecular techniques to investigate the physiology and genetics of antibiotic biosynthesis with a view to improving production. The isolation of clones of Streptomyces hygroscopicus, the producer of geldanamycin, which synthesizes geldanamycin in S. lividans, is reported. Molecular approaches using genes for elongation factors (tuf) were used in attempts to increase the fermentation yield of kirromycin, whilst probes for aphD and sph, genes for …