نتایج جستجو برای: 1993 table 1 dms
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A detailed study of the levels, the temporal and diurnal variability of the main compounds involved in the biogenic sulfur cycle was carried out in Crete (Eastern Mediterranean) during the Mediterranean Intensive Oxidant Study (MINOS) field experiment in July–August 2001. Intensive measurements of gaseous dimethylsulfide (DMS), dimethylsulfoxide (DMSO), sulfur dioxide (SO2), sulfuric (H2SO4) an...
Enrichment cultures of phototrophic purple bacteria rapidly oxidized up to 10 mM dimethyl sulfide (DMS) to dimethyl sulfoxide (DMSO). DMSO was qualitatively identified by proton nuclear magnetic resonance. By using a biological assay, DMSO was always quantitatively recovered from the culture media. DMS oxidation was not detected in cultures incubated in the dark, and it was slow in cultures exp...
Biogenic emissions of dimethylsulfide (DMS) are an important source sulfur to the atmosphere, with implications for aerosol formation and cloud albedo over ocean. Natural sources constitute largest uncertainty in estimates radiative forcing climate thus, improved understanding DMS is needed. Coral reefs strong point DMS; however, this coral biogenic not explicitly included climatologies or mode...
The physical properties of polyaniline (PAn) powder, doped by nucleophilic doping of dimethyl sulfate (DMS), were characterized, as well as its electrochemical behaviors, to investigate the possibility of a power source device adopting the PAn-DMS electrodes. It is shown that the nucleophilic addition of DMS into PAn concurrently resulted in an increase of the charge transport properties (e.g.,...
Recent field work suggests an important rôle for the Arctic Ocean in the global budget of dimethylsulphide (DMS), a climatically active volatile sulphur compound. Here, we have used an existing DMS production model and local field data to examine the temporal dynamics of the DMS cycle during the spring bloom in the Arctic shelf of the Barents Sea. The timing and duration of the spring phytoplan...
During their long-distance migrations, sea turtles of several species feed on jellyfish and other invertebrates that are particularly abundant in ocean regions characterized by high productivity. An ability to distinguish productive oceanic regions from other areas, and to concentrate foraging activities in locations where prey density is highest, might therefore be adaptive. The volatile compo...
In this paper I defend the claim that certain discourse markers (DMs) are presupposition triggers. In itself, this claim is not new but its exact content and consequences are rarely analyzed in detail. However, such an analysis is required for at least three reasons, which correspond to the three main contributions of the paper. (1) The claim that DMs are presuppositional contrasts with two oth...
A journal has recently published a paper on the impact factor of dermatology journals [1]. Data concerning Dermatology are flawed: We are credited (table 2) to have published (only) 459 papers from 1981 to 1993, when the exact figure is 1,954. The number of ‘source items’ that is apparently the number of articles considered by Dubin and Arndt worth including in their calculation for Dermatology...
The biogenic volatile compound dimethylsulfide (DMS) is produced in the ocean mainly from the ubiquitous phytoplankton osmolyte dimethylsulfoniopropionate (DMSP). In the upper mixed layer, DMS concentration and the daily averaged solar irradiance are roughly proportional across latitudes and seasons. This translates into a seasonal mismatch between DMS and phytoplankton biomass at low latitudes...
Introduction: Malnutrition (MN) is a typical complication among hemodialysis patients which is associated with morbidity and mortality rates. This cross-sectional study investigated different indices in detecting MN in hemodialysis patients. Materials and Methods: MN assessment was performed using subjective [Subjective Global Assessment (SGA) and Dialysis Malnutrition Score (DMS)] and objectiv...
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