The heat capacity of specially prepared orthorhombic sulfur has been measured in a low-temperature adiabatic calorimeter. Measurements from T ~ 6 K to near the melting temperature transition at Tfug = 388.36 K are reported for equilibrium sulfur: for the orthorhombic modification from T » 6 K to the temperature of the orthorhombic-to-monoclinic transition Ttrg = 368.3 K, and for the monoclinic ...

Genes of Sulfolobus metallicus that appeared to be upregulated in relation to growth on either ferrous iron or sulfur were identified using subtractive hybridization of cDNAs. The genes upregulated during growth on ferrous iron were found in a cluster, and most were predicted to encode membrane proteins. Quantitative reverse transcription-PCR of cDNA showed upregulation of most of these genes d...

The X-ray absorption spectroscopy technique has been applied to study different stages of the lithium/sulfur (Li/S) cell life cycle. We have investigated how speciation of S in Li/S cathodes changes upon the introduction of CTAB (cetyltrimethylammonium bromide, CH₃(CH₂)15N⁺(CH₃)₃Br-) and with charge/discharge cycling. The introduction of CTAB changes the synthesis reaction pathway dramatically ...

2-Thioribothymidine (s(2)T) is a post-transcriptionally modified nucleoside of U54 specifically found in thermophilic bacterial tRNAs. The 2-thiocarbonyl group of s(2)T54 is known to be responsible for the thermostability of tRNA. The s(2)T54 content in tRNA varies depending on the cultivation temperature, a feature that confers thermal adaptation of protein synthesis in Thermus thermophilus. L...

Based on observations of the most abundant sulfur-bearing molecules (H 2 S, CS, NS, SO, H 2 CS, OCS, and SO 2) carried out with the IRAM 30m telescope 1 and SEST 2 , we present the first analysis of the sulfur chemistry of an extragalac-tic source, the nuclear region of the starburst galaxy NGC 253. This is the first time that H 2 S and, tentatively, H 2 CS are detected towards the nucleus of a...

The development of low cost, highly efficient, desulfurization technology with integrated sulfur recovery remains a principle barrier issue for integrated gasification combined cycle power generation plants. For coal-derived synthesis gases with low sulfur content, direct air injection can be utilized to selectively oxidize the hydrogen sulfide present into elemental sulfur via the reaction H2S...

The conversion of logistics fuels to hydrogen by steam reforming is attractive but poses great challenge since they contain sulfur up to about 3000 ppm leading to catalyst deactivation due to sulfur poisoning. In this paper, we report the fabrication of nominally doped nanoscale ceriasupported rhodium catalyst matrices for their performance evaluation in sulfur-laden fuel streams. Systematic st...

A novel mesophilic bacterium, strain GO25(T), was isolated from a nest of hydrothermal vent polychaetes, Paralvinella sp., at the Iheya North field in the Mid-Okinawa Trough. Cells were motile short rods with a single polar flagellum. Growth was observed between 4 and 35 degrees C (optimum 30 degrees C; 13-16 h doubling time) and between pH 5.4 and 8.6 (optimum pH 6.1). The isolate was a facult...

Colloidal sulfur has been used clinically for the production of fever in human beings, (see Shilvock (1) and Wailer and Allen (2) for the literature). One animal experiment has also been reported. Pi&y, Bonnamour, Milhaud, and Guiguonet (3) found that after injection of colloidal sulfur into rabbits, H2S was evident in the breath and that 0.01 gm. per kilo was a toxic dose. Rastelli and Casazza...

Naphtho[2,1-b]thiophene (NTH) is an asymmetric structural isomer of dibenzothiophene (DBT), and in addition to DBT derivatives, NTH derivatives can also be detected in diesel oil following hydrodesulfurization treatment. Rhodococcus sp. strain WU-K2R was newly isolated from soil for its ability to grow in a medium with NTH as the sole source of sulfur, and growing cells of WU-K2R degraded 0.27 ...