N,N-Dimethyl-D-erythro-sphingosine (DMS) competitively inhibits sphingosine kinase (SPHK) and has been widely used to assess the role of SPHK during cellular events, including motility, proliferation, and differentiation. In the present study, the effect of DMS on the differentiation of bone marrow macrophages (BMMs) to osteoclasts was investigated. When the osteoclast precursor cells were trea...

This research was designed to investigate the effects of discourse markers on EFL Iranian learners' listening comprehension. Fifty eight male and female students took a pre-test as a proficiency test first, 39 students out of 58 are needed. To gain this aim, a language proficiency test, i.e., Nelson test will be given to the total participants. After calculating Mean and Standard Deviation, eac...

Intertidal sediments usually contain a high amount of dimethylsulfoniopropionate (DMSP) and therefore represent environments with a potentially high emission of dimethylsulfide (DMS). However, knowledge on production and release of DMSP in intertidal sediments is limited. Here, we present data on the diel variation of the total DMS and DMSP content (DMS[P]total) and the DMS(P) concentration in ...

Discourse markers (DMs) are linguistic elements that index different relations and coherence between units of talk. Most research on the development of these forms has focused on conversations rather than narratives. This article examines age and medium effects on use of various discourse markers in pre-school children. Fifteen normal Iranian monolingual children, male and female, participated ...

Abstract. The oxidation of dimethyl sulfide (DMS; CH3SCH3), emitted from the surface ocean, contributes to formation Aitken mode particles and their growth cloud condensation nuclei (CCN) sizes in remote marine environments. It is not clear whether other less commonly measured marine-derived, sulfur-containing gases share similar dynamics DMS contribute secondary aerosol formation. Here, we pre...

Dimethyl sulfide (DMS) was produced immediately after the addition of 0.1 to 2 muM beta-dimethylsulfonio-propionate (DMSP) to coastal seawater samples. Azide had little effect on the initial rate of DMS production from 0.5 muM added DMSP, but decreased the rate of production after 6 h. Filtration of water samples through membrane filters (pore size, 0.2 mum) greatly reduced DMS production for a...

The relationship between the steady state cloud condensation uclei (CCN) concentration and the dimethylsulfide (DMS) emission flux in remote marine regions is investigated by modeling the principal gas-, aerosol-, and aqueous-phase processes in the marine boundary layer (MBL). Results are in reasonable quantitative agreement with the available measurements of DMS, SOz I-I2804, CCN, and condensa...

According to many research findings, the presence of discourse markers (DMs) enhances readers’ comprehension of the texts they read. However, there is a paucity of research on the relationship between knowledge of DMs and reading comprehension (RC) and the present study explores the relationship between them. Knowledge of DMs is measured through examining the subjects’ recognition of DMs. To ca...

Dimethylsulphide (DMS) plays a major role in the global sulphur cycle. It has important implications for atmospheric chemistry, climate regulation, and sulphur transport from the marine to the atmospheric and terrestrial environments. In addition, DMS acts as an info-chemical for a wide range of organisms ranging from micro-organisms to mammals. Micro-organisms that cycle DMS are widely distrib...

[1] Dimethylsulfide (DMS) is a biogenic gas with potential climatic effects, and its marine emission depends on the interplay between microbial activity and physical forcing in the oceanic upper mixed layer. We investigated the diel cycling patterns of DMS and its precursor dimethylsulfoniopropionate (DMSP) in four experiments (28 to 48 h long) performed in mesotrophic to ultraoligotrophic Medi...