scholarly journals NATURAL CLEANING OF OIL POLLUTED SEASHORES

1972 ◽  
Vol 1 (13) ◽  
pp. 144 ◽  
Author(s):  
Georges Drapeau
Keyword(s):  
Sea Water ◽  
Wave Action ◽  
Fuel Oil ◽  
Chemical Characteristics ◽  
Stable Emulsion ◽  
Mechanical Abrasion ◽  
Physico Chemical ◽  
Main Factors ◽  
One Year ◽  
Type Fuel

Field observations were carried out for a period of 20 months on the seashores of Chedabucto Bay, following the spillage of 108, 000 barrels of bunker C oil in the bay by the tanker Arrow in February 1970. The main factors that control the natural cleaning of seashores are as follows: 1) Physico-chemical characteristics of oil: The bunker C-type fuel oil carried by the tanker Arrow forms, when spilled at sea, a very stable emulsion containing some 40 percent sea water. The emulsion formed is 40 times as viscous as pure bunker C (30,000 poises at 32°F). 2) Nature of polluted seashore: The natural cleaning of seashores is essentially mechanical. Abrasion of oil is most rapid on sand beaches because sand-size sediments are moved more vigourously by wave action. Such beaches clean within six months. Cobble and boulder beaches take one year to clean in Chedabucto Bay. Bedrock outcrops are still covered with a veneer of "dried" oil after 20 months of exposure to the surf. 3) Hydrodynamics of the environment: Wave action is the dominant source of energy that reaches the seashores of Chedabucto Bay and the cleaning of beaches is directly related to the amount of wave energy reaching different areas of the seashore.

Physico-chemical characteristics and postglacial desalination of Stanwell–Fletcher Lake, Arctic Canada

1970 ◽  
Vol 7 (3) ◽  
pp. 900-911 ◽  
Author(s):  
Brian R. Rust ◽  
John P. Coakley
Keyword(s):  
Sea Level ◽  
Heat Input ◽  
Sea Water ◽  
Salt Water ◽  
Arctic Lakes ◽  
Chemical Characteristics ◽  
Lake Basin ◽  
Meromictic Lakes ◽  
Isostatic Uplift ◽  
Physico Chemical

Stanwell–Fletcher Lake is a cold monomictic Arctic lake, essentially isothermal at about 1.5 °C, with almost complete ice cover throughout the year. The annual heat input is about 13 000 cal cm−2, much less than that of dimictic Arctic lakes. The lake is isochemical, with very low ionic concentrations.The lake basin was formed during the Pleistocene by glacial scouring of soft sediments from a graben. As the ice retreated the basin filled with sea water, and became a fjord. Subsequent isostatic uplift raised the marine shorelines to 150 m above present sea level; the uplift curve indicates emergence of the fjord sill and termination of estuarine conditions about 3500 years ago. Tidal influx persisted for about 1100 years before the lacustrine phase started.Comparisons with modern fjords and coastal meromictic lakes suggest that most of the salt left the lake during its lacustrine phase. The mechanism was probably entrainment of salt water into a deep freshwater current flowing over the chemocline due to convective circulation in summer.

Initiated by Organic Peroxides Cooligomerization of Unsaturated Hydrocarbons of C5 fraction – By-product of Ethylene Production

2016 ◽  
Vol 10 (2) ◽  
pp. 173-178
Author(s):  
Bohdan Dzinyak ◽  
◽  
Stepan Melnyk ◽  
Keyword(s):  
Reaction Time ◽  
Ethylene Production ◽  
Raw Material ◽  
Chemical Characteristics ◽  
Organic Peroxides ◽  
Temperature Reaction ◽  
Technological Parameters ◽  
Unsaturated Hydrocarbons ◽  
Physico Chemical ◽  
Main Factors

Initiated by organic peroxides cooligomerization of unsaturated compounds of C5 fraction has been studied. Such fraction is a by-product obtained at ethylene production via hydrocarbon raw material pyrolysis. The main regularities of the process have been established, the effect of main factors (temperature, reaction time, nature and concentration of the initiators) on the yield and physico-chemical characteristics of the obtained cooligomers has been examined. The effective initiator and optimal technological parameters of the cooligomerization process have been determined

scholarly journals Limnological Studies of Pedda Cheruvu Lake in Rajgopalpet, Siddipet District, Telangana State

2021 ◽  
pp. 212-222
Author(s):  
D. Srinivas ◽  
K. Shailaja
Keyword(s):  
Lake Water ◽  
Seasonal Variations ◽  
Pure Water ◽  
Chemical Characteristics ◽  
Physico Chemical ◽  
Telangana State ◽  
One Year ◽  
Pesticides Residue ◽  
Inland Water Bodies ◽  
Bodies Of Water

Pure water is the world’s first and foremost medicine and lakes are inland water bodies of water. Limnological studies of peddacheruvu Lake, Rajgopalpet, Siddipet district, Telangana state was carried out was over period of two years. The physico-chemical characteristics were studied and analyzed during the period of one year. Seasonal variations at three different stations of the lake were observed. Sewage drains, clothes washing, bathing of animals, agro-waste with pesticides residue and rituals waste drains into the lake may result into the change in physico-chemical characteristics of lake water. Some parameters like pH, temperature, Dissolved oxygen, Hardness, Nitrate, silicates and Phosphates etc. studied throughout year.

scholarly journals Physico Chemical Characteristics of Lakhna Devi Temple Water Tank, Lakhna, Bakewar, Etawah, U.P. with reference to Cyanobacterial Diversity

2013 ◽  
Vol 1 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Omesh Bajpai ◽  
Sujata Mishra ◽  
Narendra Mohan ◽  
Jitendra Mohan ◽  
Rajan K Gupta
Keyword(s):  
Heavy Metal ◽  
Water Body ◽  
Water Bodies ◽  
Chemical Characteristics ◽  
Water Tank ◽  
Algal Assemblage ◽  
Nostoc Commune ◽  
Physico Chemical ◽  
Cyanobacterial Diversity ◽  
One Year

Fresh water bodies in populated plains of tropical countries face various disturbances in the form of pollutant and nutrient inflow, heavy metal and elemental precipitation (wet or dry) and constant silt inflow (natural or anthropogenic). The physico-chemical characteristics are very much important for any water body. In lentic water bodies these characteristics shows very much variation because in summer they have less and in rains large amount of water. These adverse constrain effectively influence the algal assemblage and can be a good indicator of overall health of the water body. In the study different Physico-chemical characteristics and algal diversity were monthly observed for one year duration (Jun. 2008 to May 2009). Some of 31 species of Cyanobacteria recorded from the study site viz. Microcystis aerughinosa, M. flos-aquae, M. robusta, Chroococcus minor, C.minutes, Gloeocapsa magma, Aphanocapsa littoralis, Aphanothece microscopis, Coelosphaerium kuetzingianum, Merismopedia glauca, M. tenuissima, Arthrospira spriulinoides, Spirulina gigantean, S. major, Oscillatoria formosa, O. subuliformis, O. princeps, Phormidium ambiguum, P. fragile, P. lucidum, Lyngbya contorta, O. epiphytica, O.majuscule, Cylindrospermum minutissimum, Nostoc commune, N. punctiforme, Anabaena oscillarioides, A. oryzae, Calothrix gloeocola, Rivularia aquatic and Gloeotrichia pisum. DOI: http://dx.doi.org/10.3126/ije.v1i1.8525   International Journal of Environment Vol.1(1) 2013: 20-28

Study of Physico-chemical Characteristics and Pharmacological Effects of 1-Ethyl-Salicyldene-bis-Ethylene-Diamine and Its Complex with Mn(II)

2019 ◽  
Vol 70 (7) ◽  
pp. 2534-2537
Author(s):  
Gladiola Tantaru ◽  
Mihai Apostu ◽  
Antonia Poiata ◽  
Mihai Nichifor ◽  
Nela Bibire ◽  
...  
Keyword(s):  
Schiff Base ◽  
Chemical Structure ◽  
Antimicrobial Activities ◽  
Ethylene Diamine ◽  
Chemical Characteristics ◽  
Gram Negative Bacteria ◽  
Pharmacological Effects ◽  
Physico Chemical ◽  
Anti Inflammatory ◽  
Inflammatory Effect

The paper presents the synthesis of a new complex combination of a Bis-Schiff base with Mn(II) ions with great potential for antimicrobial and anti-inflammatory activity. A new complex of the Salen-type ligand, 1-ethyl-salicylidene-bis-ethylene diamine was synthetized using Mn(II) ions. The chemical structure was confirmed through 1H-NMR and IR spectroscopy. The antimicrobial activities of the Bis-Schiff base and its complex were tested in comparison with Ampicillin, Chloramphenicol, Tetracycline, Ofloxacin and Nystatin. Those compounds were found to be active against Gram-positive or Gram-negative bacteria, and had an anti-inflammatory effect comparable to that of Indomethacin.

Progress and Prospects in Translating Nanobiotechnology in Medical Theranostics

2020 ◽  
Vol 16 (5) ◽  
pp. 685-707 ◽  
Author(s):  
Amna Batool ◽  
Farid Menaa ◽  
Bushra Uzair ◽  
Barkat Ali Khan ◽  
Bouzid Menaa
Keyword(s):  
Biological Properties ◽  
Chemical Characteristics ◽  
Intrinsic Properties ◽  
The Past ◽  
Profound Influence ◽  
Functionalized Nanomaterials ◽  
Physico Chemical ◽  
Properties Of Materials ◽  
Targeted Drug ◽  
And Performance

: The pace at which nanotheranostic technology for human disease is evolving has accelerated exponentially over the past five years. Nanotechnology is committed to utilizing the intrinsic properties of materials and structures at submicroscopic-scale measures. Indeed, there is generally a profound influence of reducing physical dimensions of particulates and devices on their physico-chemical characteristics, biological properties, and performance. The exploration of nature’s components to work effectively as nanoscaffolds or nanodevices represents a tremendous and growing interest in medicine for various applications (e.g., biosensing, tunable control and targeted drug release, tissue engineering). Several nanotheranostic approaches (i.e., diagnostic plus therapeutic using nanoscale) conferring unique features are constantly progressing and overcoming all the limitations of conventional medicines including specificity, efficacy, solubility, sensitivity, biodegradability, biocompatibility, stability, interactions at subcellular levels. : This review introduces two major aspects of nanotechnology as an innovative and challenging theranostic strategy or solution: (i) the most intriguing (bare and functionalized) nanomaterials with their respective advantages and drawbacks; (ii) the current and promising multifunctional “smart” nanodevices.

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