This work presents the heterogeneous kinetics of the reaction of CH3SCH3 (dimethyl sulphide, DMS) with O3 (ozone) in aqueous solutions of different ionic strengths (0, 0.1 and 1.0M NaCl) using the wetted-wall flowtube (WWFT) technique. Henry’s law coefficients of DMS on pure water and on different concentrations of NaCl (0.1M – 4.0M) in the WWFT from UV spectrophotometric measurements of DMS in...

Sphingolipid breakdown products, including ceramide and sphingosine, regulate cell growth, cell differentiation, and apoptosis. We examined the effect of various agents, including sphingolipids, on apoptosis induction in human epidermoid carcinoma KB-3-1 and its multidrug-resistant (MDR) subclone KB-C2 cells which express P-glycoprotein. Adriamycin (ADM) induced apoptosis in KB-3-1 cells but no...

A global coupled ocean-atmosphere modeling system is established to study the production of dimethylsulfide (DMS) in the ocean, the DMS flux to the atmosphere, and the resulting sulfur concentrations in the atmosphere. The DMS production and consumption processes in the ocean are simulated in the marine biogeochemistry model HAMOCC5, embedded in a ocean general circulation model (MPI-OM). The a...

A lower ideal of trees is a set I of finite trees such that if T ∈ I and T topologically contains S then S ∈ I. We prove that every lower ideal of trees I has a structural description, a finite set of rules which describes how to construct an arbitrary element of I. 1991 Mathematics Subject Classification. Primary 05C05, 05C75. Research of the first and third author was performed under a consul...

Feed and Eating Disorders (FED), whose diagnostic criteria have recently been modified in the DSM-5 [1], are multifactorial diseases caused by complex interactions between biological, psychological and social factors [2,3], whose frequency is sharply increasing in adolescence [4-6]. The diagnosis is complex, especially in early adolescence (8-12 years), because of the extreme heterogeneity of s...

[1] The factors driving dimethylsulfide (DMS) cycling in oligotrophic environments are isolated using a time-series of DMS sampled in the Sargasso Sea. The observed distribution of DMS is inconsistent with bottom-up processes related to phytoplankton production, biomass, or community structure changes. DMS concentrations and estimates of net biological community production are most highly corre...

[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...

Recently, we suggested that hypobromous acid (HOBr) is a sink for the marine volatile organic sulfur compound dimethyl sulfide (DMS). However, HOBr also known to react with reactive moieties of dissolved matter (DOM) such as phenolic compounds form bromoform (CHBr3) and other brominated compounds. The reaction between DMS may thus compete DOM. To study this potential competition, kinetic batch ...

This article proposes a bidirectional feedback mechanism for consensus in group decision making (GDM) driven by the behavior of makers (DMs), which is discriminated with flexible harmony degree as one three possible states: (1) ‘tolerance behavior’; (2) ‘rationalist and (3) ‘conflict behavior’. The first two states are to be resolved reaching process round recommendations discordant DMs. Howeve...

Results The overall failure rate was 31% after bracing and 52% after observation. Age, gender, Risser, Sanders’ digital maturity stage (DMS), curve type and Cobb angle were all associated with outcome. DMS stages were more predictive of failure than Risser grade, even with age in the model. The best-fitting model included the DMS (1-2, 3, or 4+), Cobb angle, and treatment (p<0.0001, c statistic...