The two-dimensional barotropic, hydrodynamic and transport model MOHID is applied to the Patos Lagoon system using a nested modelling approach to reproduce both the lagoon and estuary hydrodynamics. A new Lagrangian oil spill model is presented and used to simulate a hypothetical oil spill in th...

The whitemouth croaker Micropogonias furnieri, inhabits marine and brackish waters, and is one of the main fishery targets along the Brazilian coast. The species uses different estuarine habitats as a nursery during its early life cycle. The main objective of this study was to investigate the es...

Arsenic distribution in sediments of the Mirim–Patos lagoonal system is investigated. Deposits of fresh water Mirim Lagoon and those of the fresh water part of the Patos Lagoon contain 2.5 and 7.7 mg kg−1, respectively, on average of total arsenic. In contrast, estuarine sediments of the Patos ...

The Conglomerado Los Patos is a coarse-grained clastic unit that crops out irregularly in the San Antonio de los Cobres Valley in the Puna, Northwestern Argentina. It covers different units of the Cretaceous-Paleogene Salta Group by means of an angular unconformity and, in turn, is overlaid in a...

ResumenIntroducciónEl objetivo del estudio es conocer la incidencia, los resultados tras la cirugía y la necesidad de rehabilitación de las fracturas por avulsión de tipo II de la tuberosidad posterior del calcáneo.

In estuaries, a common pattern found is of higher bacterial activity in freshwater than in saltwater, an indication of the existence of an activity gradient. It is not clear, however, whether this arises from a natural property of saltwater bacterial communities or from metabolic constraints imp...

The present study aimed to investigate the presence of Vibrio vulnificus in fish captured at the Lagoa dos Patos estuary (RS, Brazil), to establish a correlation between bacterial biofilm formation and sublethal stress, and to assess the resistance of the isolates to antimicrobials and sanitizer...

Preliminary crystallographic analysis of crystals of the respective benzene and bromobenzene adducts of hodgkinsine, an alkaloid from Hodgkinsonia frutescens F. Muell. (family Rubiaceae), together with mass spectral evidence suggested a formulation for hodgkinsine based on three N-methyltryptami...

Thiophene and benzothiophene ligands containing N-heterocyclic carbene (NHC) moieties were used to synthesize five and six-membered Pt(II) metallacycles. Ligand scaffolding was synthesized using two methods. The ligands were synthesized using a coupling reaction, utilizing Cu2O as the catalyst o...

A series of novel molecular hybrids based on 4-aminoquinoline-pyrimidine were synthesized and examined for their antimalarial activity. Most of the compounds were found to have potent in vitro antimalarial activity against both CQ-sensitive D6 and CQ-resistant W2 strains of P. falciparum. The ac...

We successfully synthesized a new organodisulfide poly 1,2-bis(thiophen-3-ylmethyl)disulfane by a facile preparation method. The types of the chemical groups of poly-3-thienylthiophene were characterized by Fourier transform infrared spectroscopy (FTIR). The electrochemical properties of S–S bo...

4-(3-(1H-imidazol-1-yl)propyl)-(thiophen-2-ylmethyl)-1H-1,2,4-triazol-5(4H)-one (IPTT), C13H15N5OS, was synthesized and characterized by 13C NMR, 1H NMR, IR and single-crystal X-ray diffraction. The structure of IPTT is stabilized by three intermolecular hydrogen bonds and by intermolecular CH⋯π...

In this work, 4-allyl-5-(thiophen-2-ylmethyl)-2H-1,2,4-triazol-3(4H)-one has been synthesized and characterized by using FT-IR, 1H NMR, UV–vis spectra and XRD (X-ray single crystal determination) experimentally and using B3LYP/6-31G(d), HF/6-31G(d) methods theoretically. The structure of compou...

A series of novel 4-hydroxy-3-(naphthalen-1-ylmethyl)thiophen-2(5H)-ones as tyrosyl-tRNA synthetase inhibitors were synthesized. Of these compounds, 4-(naphthalen-1-ylmethyl)-5-oxo-2,5-dihydrothiophen-3-yl-2-(4-hydroxyphenyl)acetate (29) was the most potent. The binding model and structure–acti...

Reactions of {tris[2-(dimethylamino)phenyl]germyl}lithium (1) with Group 14 electrophiles afford the corresponding carbogermane, silylgermane, and stannylgermane compounds containing three 2-(dimethylamino)phenyl groups on the germanium atom. X-ray structure analysis of these structures was perf...

Substituted cis-1-formyl (or acetyl) bicyclo[3.3.0]octanes are stereospecifically obtained in high yield by a base-catalyzed rearrangement of readily accessible substituted 1-chloro-9-hydrony (or acetoxy) bicyclo[3.3.1] nonanes.

3‑Hydroxy‑N‑(5‑mercapto‑1,3,4‑thiadiazol‑2‑yl) benzamide (HMTB) was synthesized and self-assembled on the surface of gold electrode. The self-assembled monolayer of HMTB (Au-HMTB SAM) so formed was electrochemically characterized by using cyclic voltammetry (CV) and electrochemical impedance spe...

Various nucleophiles were reacted with the substrate di-n-hexyldichlorosilane as model reactions for the substitution of two geminal SiCl bonds on polymer backbone repeat units. The reactants examined were chosen on the basis of steric bulk, electronic factors, and resulting stability of the p...

The chromatographic (GLC and silver ion TLC) properties of thirteen octadecadiynoic esters and the cis,cis- and trans,trans-dienoates derived from them are investigated. The possibility of predicting GLC behaviour (ECL) is discussed.

Refining of high acid crudes (HACs) is seriously limited by extensive corrosion of refinery equipment due to the presence of intrinsic naphthenic acids (NAs). Herein, in the absence of a catalyst or external hydrogen, effective removal of the NAs contained in HACs was achieved using methanol at ...