The role of carbonate radical in limiting the persistence of sulfur-containing chemicals in sunlit natural waters

Chemosphere ◽  
2000 ◽  
Vol 41 (11) ◽  
pp. 1775-1782 ◽  
Author(s):  
Jiping Huang ◽  
Scott A. Mabury
Keyword(s):  
Natural Waters ◽  
Carbonate Radical ◽  
Sulfur Containing

Integrated interrelationship of sewage sludges with absorbing complex of river Miass drainage area

2014 ◽  
Vol 9 (4) ◽  
pp. 441-444
Author(s):  
Y. A. Dzhenis ◽  
I. I. Tuber
Keyword(s):  
Heavy Metals ◽  
Natural Waters ◽  
Drainage Area ◽  
Sewage Sludges

Soil is a powerful and active absorber of many substances, assumes the pressure of industrial and municipal emissions and waste, and performs the important role of a buffer and a detoxicant. It accumulates heavy metals, pesticides, hydrocarbons and other chemical polluting substances and due to the soil absorbing complex (SAC) strongly captures and protects natural waters and the atmosphere from harm. Applying sewage sludges in our research will enable us to strengthen the capacity of SAC and to reduce the toxicity of heavy metals when they enter a reservoir via a drain from anthropogenically polluted territory.

The role of Fe(II) species on the oxidation of Fe(II) in natural waters in the presence of O2 and H2O2

2006 ◽  
Vol 99 (1-4) ◽  
pp. 70-82 ◽  
Author(s):  
J.M. Santana-Casiano ◽  
M. González-Dávila ◽  
F.J. Millero
Keyword(s):  
Natural Waters

scholarly journals THE ROLE OF SURFACE TENSION IN BREAKING WAVES

1972 ◽  
Vol 1 (13) ◽  
pp. 22 ◽  
Author(s):  
Robert L. Miller
Keyword(s):  
Surface Tension ◽  
Natural Waters ◽  
Experimental Studies ◽  
Breaking Waves ◽  
Engineering Model ◽  
Constant Depth ◽  
Model Studies ◽  
Limit Form ◽  
Satisfactory Theory

Breaking criteria in the vicinity of the crest, such as limit crest angle and limit form, and larger dimensions such as limit height (H/L) and breaker height (Hb/db)» are found experimentally to be significantly affected by change in surface tension. A number of wave types were examined, including periodic waves, solitary waves, and standing waves, over both constant depth and uniform slopes. Variations in natural waters in some cases were found to be of equivalent magnitude to those induced for the experiments. The conclusion is drawn that surface tension should be taken into account in development of a satisfactory theory of breakers. It is also an important factor in experimental studies, particularly engineering model studies involving breaking waves.

scholarly journals Sulfur and Sulfur Compounds in Plant Defence

2012 ◽  
Vol 7 (3) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Ifeanyi D. Nwachukwu ◽  
Alan J. Slusarenko ◽  
Martin C. H. Gruhlke
Keyword(s):  
Natural Products ◽  
New Technologies ◽  
Plant Defence ◽  
Sulfur Compounds ◽  
Oxidation States ◽  
Chemical Structures ◽  
Wide Range ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

The multiplicity of chemical structures of sulfur containing compounds, influenced in part by the element's several oxidation states, directly results in diverse modes of action for sulfur-containing natural products synthesized as secondary metabolites in plants. Sulfur-containing natural products constitute a formidable wall of defence against a wide range of pathogens and pests. Steady progress in the development of new technologies have advanced research in this area, helping to uncover the role of such important plant defence molecules like endogenously-released elemental sulphur, but also deepening current understanding of other better-studied compounds like the glucosinolates. As studies continue in this area, it is becoming increasingly evident that sulfur and sulfur compounds play far more important roles in plant defence than perhaps previously suspected.

Role of sulfur in proton-induced collisions of RNA prebiotic precursors

2019 ◽  
Vol 21 (3) ◽  
pp. 1428-1434 ◽  
Author(s):  
Marie-Christine Bacchus-Montabonel
Keyword(s):  
Charge Transfer ◽  
Theoretical Treatment ◽  
Selective Synthesis ◽  
Sulfur Containing ◽  
Rna Precursor

Charge transfer theoretical treatment of proton-induced collisions on the sulfur-containing cyclic RNA precursor, 2-aminothiazole. Role of sulfur in the process and implications in prebiotic selective synthesis.

Role of the Sulfur-Containing Amino Acids in Protein-Induced Hypercalciuria in Men

1981 ◽  
Vol 111 (3) ◽  
pp. 545-552 ◽  
Author(s):  
Michael B. Zemel ◽  
Sally A. Schuette ◽  
Maren Hegsted ◽  
Hellen M. Linkswiler
Keyword(s):  
Amino Acids ◽  
Sulfur Containing

The role of copepods (Cyclopsspp.) in eliminating the actinospore stages of fish-parasitic myxozoans

2006 ◽  
Vol 54 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Orsolya Rácz ◽  
Cs. Székely ◽  
K. Molnár
Keyword(s):  
Digestive Tract ◽  
Natural Waters ◽  
Fish Host ◽  
Fluorescent Staining ◽  
Histological Techniques ◽  
Muscle Infection

The actinospore consumption of copepods (Cyclopsspp.)was demonstrated by laboratory observations. It was observed that in experimental dishes the number of actinospores floating in the water decreased, or such actinospores were completely eliminated, in the presence of copepods. The ingestion of actinospores by copepods and their further fate were monitored by fluorescent staining and by conventional histological techniques. The actinospores were observed to have got caught on the filters of Cyclopsspp. Two and a half hours after the copepods had been placed into water containing actinospores, their digestive tract was found to contain spores that had extruded their filaments from the polar capsules. After copepods having ingested the actinospores of the species Myxobolus pseudodisparhad been fed to roaches, no muscle infection developed in the fish host. It is likely that Cyclopsspp. can filter out actinospores floating in the water also from natural waters, thus decreasing the chance of development of myxosporean infections.

Gamma radiolytic decomposition of endosulfan in aerated solution: the role of carbonate radical

2016 ◽  
Vol 23 (12) ◽  
pp. 12362-12371 ◽  
Author(s):  
Noor S. Shah ◽  
Javed Ali Khan ◽  
Ala’a H. Al-Muhtaseb ◽  
Murtaza Sayed ◽  
Hasan M. Khan
Keyword(s):  
Carbonate Radical ◽  
Radiolytic Decomposition
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