New 16-membered macrolide antibiotics 6108 Al (1), B (2), C (3) and D (4) were isolated from the culture filtrate of a Micromonosporafastidiosus sp. 1 }. From the physico-chemical, spectroscopic data and chemical degradation studies, these compoundswere shownto be analogs of rosaramicin (5)2), whose structures were different from 5 at the C-18 position. In this paper, we describe the structure ...

The effect of pig iron slag particles on soil physico-chemical, biological and certain soil enzyme properties was studied. Contamination of iron slag particles altered physico-chemical, biological and enzyme properties of soil. While soil pH increased slightly, electrical conductivity, carbon, potassium and phosphorus contents increased significantly in polluted soil. Contamination of soil with...

Carbonate sediments may be cemented by a variety of forms of aragonite. calcite. or dolomite. The mineralogy of the cement has been regarded by most investigators as the product of the physico-chemical environment within the sediment at the time of cementation. This has been a reasonable working hypothesis until it was recently demonstrated that many different kinds of cement may occur in beach...

Evaluation of the physico-chemical properties that affected the experimental data was performed for 45 newly synthesized compounds, derivatives of 2,4-dioksotetrahydro-1,3-thiazole. In order to quantify molecular structure various molecular descriptors were calculated for each of the 45 compounds. Evaluation of physico-chemical properties was done by the partial least-squares (PLS) regression. ...

(Received: November 27, 2010; Accepted: February 9, 2011) Abstract: The effect of pig iron slag particles on soil physico-chemical, biological and certain soil enzyme properties was studied. Contamination of iron slag particles altered physico-chemical, biological and enzyme properties of soil. While soil pH increased slightly, electrical conductivity, carbon, potassium and phosphorus contents ...

Semiconductor quantum dots (QDs) or nanoparticles (NPs) exhibit very unusual physico-chemcial and optical properties. This review article introduces the applications of semiconductor nanomaterials (NMs) in fluorescence spectroscopy and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) for biomolecule analysis. Due to their unique physico-chemical and optical properties, s...

Sažetak A study of physico-chemical properties and instrumental measurement of colour and texture was carried out on seven different brands of traditional homemade dry fermented horse salami from Pakrac area. Basic physico-chemical properties, pH values and salt content showed significant variability (p = 0.05), except for the values of aw. Textural and colour parameters (L*, a* and b*) also sh...

A series of O56-substituted carboxyester or carboxyamide derivatives of deglucoteicoplanin (TD) was prepared by condensation of the 56-hydroxyl function with various alkylating agents of general formula RBr, where R represents functional groups with different physico-chemical properties. The modifications at position 56 influenced the antimicrobial activity of the new derivatives; activity depe...

comparison of the effects of bran versus fresh vegetable on the metabolic and physico-chemical qualities of stool

the present study has been undertaken in a laboratory scale to characterize and investigate pollution potential of textile effluents from depz area in dhaka, bangladesh. collected effluent samples from five different industries were analyzed for physico-chemical parameters using field kits and standard methods, and for metals using flame atomic absorption spectrophotometer (faas). the average p...