Silikazko nanopartikula mesoporotsuak (MSNak) aurreko mendetik ezagutzen diren arren, azkeneko hamarkadan arreta handia bereganatu dute. Material mota hauen propietateak (hala nola, poro-bolumen zein gainazaleko eremu handiak) biomedikuntzaren arloan ikertzeko bereziki aproposak izatea eragin du. Gainera, propietate horiek moldakorrak dira, eta horrek, gaur egungo biosistemen aldean abantaila h...

Bacteria swim by means of rotating flagella that are powered by ion influx through membrane-spanning motor complexes. Escherichia coli and related species harness a chemosensory and signal transduction machinery that governs the direction of flagellar rotation and allows them to navigate in chemical gradients. Here, we show that Escherichia coli can also fine-tune its swimming speed with the he...

The role of flagella in the pathogenesis of F4ac+ Enterotoxigenic Escherichia coli (ETEC) mediated neonatal and post-weaning diarrhea (PWD) is not currently understood. We targeted the reference C83902 ETEC strain (O8:H19:F4ac+ LT+ STa+ STb+), to construct isogenic mutants in the fliC (encoding the major flagellin protein), motA (encoding the flagella motor), and faeG (encoding the major subuni...

The C-terminal domain of MotB (MotB-C) contains a putative peptidoglycan-binding motif and is believed to anchor the MotA/MotB stator unit of the bacterial flagellar motor to the cell wall. Crystals of Helicobacter pylori MotB-C (138 amino-acid residues) were obtained by the hanging-drop vapour-diffusion method using polyethylene glycol as a precipitant. These crystals belong to space group P2(...

How many monochromatic paths, cycles or general trees does one need to cover all vertices of a given r-edge-coloured graph G? These problems were introduced in the 1960s and intensively studied by various researchers over last 50 years. In this paper, we establish connection between problem following natural Helly-type question hypergraphs. Roughly speaking, asks for maximum number needed edges...

This article aims to analyze the influence of Portuguese immigrants, as well their political and social networks, in construction anarchism Brazil since its establishment until 1920s. militants community Brazilianlabor movement, revolutionary syndicalism among anarchists: Joaquim Mota Assunção, Neno Vasco Tércio Miranda. We hypothesize that linguistic cultural elements favored organizations uni...

Multiple object tracking (MOT) in unmanned aerial vehicle (UAV) videos has attracted attention. Because of the observation perspectives UAV, scale changes dramatically and is relatively small. Besides, most MOT algorithms UAV cannot achieve real-time due to tracking-by-detection paradigm. We propose a feature-aligned attention network (FAANet). It mainly consists channel spatial module aggregat...