In this study, a series of g-C3N4 nanosheets were prepared by various thermal oxidative etching times from four different precursors (urea, melamine, dicyandiamide and thiourea). The physicochemical properties these analyzed in detail using scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence emission spectra, Fourier transform infrared spectroscopy (FTIR), Brunauer–Em...

Antibiotics are widely used in livestock and poultry farming for disease prevention animal growth promotion. Due to the low absorption rate of antibiotics by animals, can remain manure as parent or metabolites enter farm environment with application manure, which has potential effects on crop growth. This study assessed single combined contamination soil tomato plants. The accumulation plants i...

Surfactant-Modified MFI-Zeolite Nanosheets (SMZN) were used for the first time as anion-exchangers, in the case of nitrate ion removal. The SMZN material is characterized by high anionic exchange capacity and removal efficiency compared to classical SMZ prepared from clinoptilolite. The SMZN material is easily regenerated and could be probably employed to remove other anionic pollutants.

Thirty-four strains of Haemophilus influenzae (20 ampicillin sensitive and 14 ampicillin resistant), mostly type b isolates from cerebrospinal fluid or blood, were tested for susceptibility to a combination of trimethoprim-sulfamethoxazole (TMP-SMZ) in a ratio of 1 part TMP to 19 parts SMZ. All strains were very susceptible to the TMP-SMZ combination, with minimal inhibitory concentrations rang...

Nocardiosis is a rare infectious disease due to Nocardia infections. In this report, we present a rare case of cutaneous nocardiosis with involvement of the trachea, anterior mediastinum and sternum. The strain of Nocardia has been isolated from bacterial culture of infected tissue. 16s rRNA sequencing confirmed that it contained the Nocardia genus. The patient was successfully treated with Co-...

Antibiotics can accumulate in soils via different ways, which may pose serious threat to ecological environment of soil and quality of agricultural products. In this study, the occurrence of 12 antibiotics including four sulfonamides (SAs), four tetracyclines (TETs) and four fluoroquinolones (FQs) was investigated in soils from four sampling sites of Kenya (Mai Mahiu, Narok, Mount Suswa Conserv...

Many antibiotics regarded as emerging contaminants have been frequently detected in soils and groundwater; however, their transport behaviors in soils remain largely unknown. This study examined the transport of two antibiotics, sulfamethoxazole (SMZ) and ciprofloxacin (CIP), in saturated porous media. Laboratory columns packed with quartz sand was used to test the effects of solution pH and io...

Concentrations of trimethoprim (TMP) and sulfamethoxazole (SMZ) in blood were determined in seven healthy volunteers after ingestion of 720 mg of TMP and 3,600 mg of SMZ (nine tablets of TMP-SMZ, 1:5 ratio) as a single oral dose. The mean levels of drug in blood achieved during the first 8 h after drug administration ranged from 6.12 to 8.32 mug/ml for TMP and 98 to 120 mug/ml for SMZ. These co...

1. The metabolism of sulphanilamide, sulphadimidine (4,6-dimethyl-2-sulphanilamidopyrimidine), sulphamethoxazole (5-methyl-3-sulphanilamidoisoxazole) and sulphadoxine (5,6-dimethoxy-4-sulphanilamidopyrimidine) given by intravenous injection has been examined in cows. 2. The sulphonamides were present mainly as unchanged drugs in blood samples collected 2h after administration. 3. The sulphonami...

O presente trabalho descreve a aplicação bem sucedida da microextração em sorvente empacotado e cromatografia líquida com detecção de arranjo de diodos (MEPS/LC-DAD) para a determinação simultânea das sulfonamidas (sulfacetamida, sulfadiazina, sulfatiazol, sulfametazina sulfametoxipiridazina e sulfametoxazol) em amostras de ovos. As variáveis MEPS (pH da amostra, número de ciclos aspirar/dispen...