We have conducted a search for open clusters in the vicinity of classical Galactic Cepheids based on high-quality astrometry from third data release (DR3) ESA mission Gaia to improve calibration Leavitt law (LL). Our approach requires no prior knowledge existing clusters, allowing us both detect new host and cross-check previously reported associations. Gold sample consists 34 residing 28 inclu...

Rapid bio-oxidation of carbon monoxide (CO), a photoproduct of dissolved organic matter, results in diel cycles reflecting photochemical–biogeochemical–physical interactions. These cycles were characterized by timeseries studies of hydrography, meteorology, insolation, optics, and CO concentration ([CO]). Diel patterns of near-surface [CO] generally varied little seasonally, despite different f...

The sea–surface microlayer (SML) is the boundary layer between the ocean and the atmosphere. We measured bacterial production and respiration along with dissolved organic carbon (DOC), nitrogen (DON), and phosphorus, inorganic nutrients, and dissolved amino acids in the SML and the underlying water (ULW) of the subtropical Atlantic gyre (SATL) and the western Mediterranean Sea (WMED). Dissolved...

We use a 15-yr record from a 100-km stretch of the tidal, freshwater Hudson River to examine the controls of phytoplankton biomass. Across years, seasonal mean chlorophyll a (Chl a) and maximum Chl a varied by approximately 15-fold, with mean growing-season Chl a as high as 24 mg L21 and maximum Chl a as high as 120 mg L21. For 3 of the 15 yr the river would be classified as eutrophic on the ba...

Dinophysis acuminata, D. norvegica, and D. rotundata occur regularly in the Baltic Sea summer plankton. They are known to produce diarrhetic shellfish poisoning (DSP) toxins in coastal areas worldwide, but so far, evidence from the Baltic Sea is scarce, and the fate and transfer of their toxins in the ecosystem is poorly known. Occurrence of Dinophysis and DSP toxins was studied on the southwes...

this study investigates the relationship between market structure and profitability in the iranian manufacturing industries. in this study, raw data based on international standard industrial classification (at four digit code) has been used. fixed effects panel estimation method (based on diagnostic test results) has been chosen for empirical investigation. the result of the study confirms the...

Light-weight high entropy alloys (LWHEAs) are considered equiatomic or near-equiatomic consisting of at least five elements. Low-density elements, like Al and Ti, the key constituents in designing these so that features such as reduced overall density improved mechanical properties achieved. A new LWHEAs (Al2CrFeMnTi) is designed, where alloying followed by subsequent casting carried out for a ...

Total phosphorus (TP) exports from the rivers draining into Lough Neagh increased between 1974 and 2000 despite lower TP inputs to the rivers from point sources. Over this period annual diffuse exports of dissolved reactive P (DRP) increased by 238%, from 17 to 57 kg P km22 with an annual rate increase of 1.6 6 0.3 kg P km22 yr21. Dissolved unreactive P exports increased by 0.4 6 0.2 kg P km22 ...