Evergreen oak leaves as natural monitor in environmental pollution

1988 ◽  
Vol 123 (2) ◽  
pp. 713-729 ◽  
Author(s):  
G. Capannesi ◽  
S. Caroli ◽  
A. Rosada
Keyword(s):  
Environmental Pollution ◽  
Evergreen Oak ◽  
Oak Leaves

Histological and chemical changes in tannic compounds of evergreen oak leaf litter

1988 ◽  
Vol 66 (4) ◽  
pp. 663-667 ◽  
Author(s):  
L. Racon ◽  
N. Sadaka ◽  
G. Gil ◽  
J. Le Petit ◽  
R. Matheron ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Condensed Tannins ◽  
Average Molecular Weight ◽  
Degradation Process ◽  
Western Mediterranean ◽  
Lower Epidermis ◽  
Hydrolyzable Tannins ◽  
Enzymatic Action ◽  
Evergreen Oak ◽  
Oak Leaves

In evergreen oak leaves collected at a western Mediterranean site (Var, France), the amounts of both hydrolyzable and condensed tannins decrease through the depth of the leaf litter. The decrease in condensed tannins could be partly explained by the cellular degradation of the lower epidermis and the mesophyll of leaves, as observed in histological sections. However, the condensed tannins may also be degraded by microbial enzymes because their average molecular weight decreased by about 50%. In contrast, the decrease in hydrolyzable tannins seems to be initiated by microbial enzymatic action, which is then followed by the same degradation process described above.

scholarly journals Occurrence of Bacillus species on evergreen oak leaves

1994 ◽  
Vol 14 (4) ◽  
pp. 331-342 ◽  
Author(s):  
B. Brunel ◽  
C. Perissol ◽  
M. Fernandez ◽  
J.M. Boeufgras ◽  
J. Le Petit
Keyword(s):  
Bacillus Species ◽  
Evergreen Oak ◽  
Oak Leaves

Identification of Pulmonary Deposits from a Sandpaper Worker: A Study by Electron Microscopy and X-Ray Microanalysis

1982 ◽  
Vol 40 ◽  
pp. 52-53
Author(s):  
S. K. Peng ◽  
M.A. Egy ◽  
J. K. Singh ◽  
M.B. Bishop
Keyword(s):  
Electron Microscopy ◽  
Environmental Pollution ◽  
Rare Case ◽  
Interstitial Fibrosis ◽  
X Ray ◽  
Documented Case ◽  
Etiologic Agents ◽  
Pulmonary Interstitial Fibrosis ◽  
Gold Miners ◽  
Pulmonary Changes

Electron microscopy and energy dispersive x-ray microanalysis (EDXA) are found to be very useful tools for identification of etiologic agents in pneumoconiosis or interstitial pulmonary disorders. Pulmonary interstitial fibrosis and granulomatosis are frequently associated with occupational and environmental pollution. Numerous reports of pneumoconiosis in various occupations such as coal and gold miners are presented in the literature. However, there is no known documented case of pulmonary changes in workers in the sandpaper industry. This study reports a rare case of pulmonary granulomatosis containing deposits from abrasives of sandpaper diagnosed by using EDXA.

Review of Environmental Pollution and Mental Health.

1974 ◽  
Vol 19 (7) ◽  
pp. 568-568
Author(s):  
GEORGE W. ALBEE
Keyword(s):  
Mental Health ◽  
Environmental Pollution

Equipment dentifying Vapor Leakages and Recovery of Petroleum Product Vapor When Stored

2020 ◽  
Vol 05 ◽  
pp. 60-64
Author(s):  
Y.N. Rybakov ◽  
◽  
V.E. Danilov ◽  
I.V. Danilov ◽  
◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Environmental Protection ◽  
Petroleum Product ◽  
Petroleum Products ◽  
Oil Products ◽  
Carnot Cycle ◽  
Oil Supply ◽  
Gas Stations ◽  
Environmental Situation ◽  
Vapor Absorption

The problem of losses of oil products from leaks during their storage and transportation at oil supply facilities is considered. The influence of oil product leaks on the environmental situation around oil depots and gas stations is shown. A detailed overview of existing methods and tools for detecting leaks of petroleum products from storage facilities is presented. The evaluation of their effectiveness. Two methods for detecting oil leaks and devices based on them are proposed. The first device monitors the movement of liquid in the tank, the second-detects petroleum products in wastewater. The problem of recovery of petroleum vapors and environmental pollution from the release of vapors of light fractions into the atmosphere is also considered. An overview of existing methods and means of recovery of petroleum vapors is presented. Two methods and devices for capturing oil vapors and returning them to the reservoir are proposed, based on different principles: vapor absorption in the cooled oil product and vapor recovery on the principle of the Carnot cycle. It is shown that these devices can provide effective detection of oil leaks and recovery of their vapors, as well as improve the effectiveness of environmental protection at modern gas stations and tank farms.

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