Plants exposure

For other environments, such as in sea-water or in chemical plants, exposure conditions that most nearly duplicate those of the related service and are at the same time reproducible, are used. Impingement by water or water carrying entrained solids, thermal effects and physical abuse are among the factors to be considered. 

Very low. Even very small, repeated exposures of HD are cumulative in their effects or more than cumulative owing to sensitization. This has been shown in the postwar case histories of workers in mustard-filling plants. Exposure to vapors from spilled HD causes minor symptoms, such as "red eye." Repeated exposure to vapor causes 100% disability... 

Heck, W. W., J. A. Dunning, and H. Johnson. Design of a Simple Plant Exposure Chamber. National Air Pollution Control Administration Publ. APTD 68-6. Cincinnati U.S. Department of Health, Education, and Welfare, 1968. 24 pp. 

In a cohort study of workers at a rubber chemicals plant, exposure to MBT did not seem to increase the risk of most cancers, including cancers of the lung and prostate. ... 

Beryllium is an important metal alloy used in the nuclear power industry. Its presence in coal and oil results in more than 1250 tons being released into the environment annually from fuel combustion at power plants. Exposure is primarily from inhalation, but skin contact can result in dermatitis. Cigarette smokers also inhale a little beryllium. Initially, beryllium distributes to the liver, but ultimately is absorbed by bone. 

Sublethal plant exposures to a number of phytotoxic air pollutants can cause the reversible suppression of one of life s most basic processes— photosynthesis. The possibility of plant growth suppression by atmospheric pollution is a concern of many people. We need to know if subnecrotic pollutant exposures that may occur in ambient air can repress photosynthesis rates sufficiently to cause significant retardation of plant growth. Some insight into the capability for short-term exposures to HF, CI2, O3, S029 NO2 and NO— applied singly and as dual pollutant mixtures— to suppress apparent photosynthesis rates of several important crop species is presented here. 

Muir DCF, Jadon N, Julian JA, et al. 1994. Cancer of the respiratory tract in nickel sinter plant workers effect of removal from sinter plant exposure. Occup Environ Med 51(1) 19-22. 

Polybrominated Biphenyls. Twenty-five workers at a PBB-manufacturing plant (exposure duration and levels not reported) displayed mean scores on tests of memory and learning that were typical for people of their age, and educational, occupational, and cultural backgrounds, even though they had an elevated mean PBB concentration in adipose tissue (9.33 ppm) (Brown et al. 1981). Workers with the highest concentrations of PBBs in adipose tissue showed no evidence of memory dysfunction in these tests. 

Incidental and accidental intake of atropine and scopolamine, which are the main tropane alkaloids in plants of the solanecae family, may provoke poisoning of man and livestock [11,13-15, 55, 57,119-122] causing agitation, aggression, hallucinations, dry mouth and skin, mydriasis, loss of consciousness followed by coma combined with tachycardia, hypotension, and hyperthermia [57, 121], A detailed statistical analysis of paediatric plant exposures in Germany within the years 1998-2004 has been provided by Pietsch et al. [123], They found that most prevalent victims of accidental plant exposures are children in the age of 1-6 years presumably being misled by the attractive plump berries. 

Pietsch J, Koch I, Hermanns-Qausen M, Htiller G, Wagner R, Dressier J (2008) Pediatric plant exposures in Germany, 1998-2004. Clin Toxicol 46 686-691... 

The environmental effects from the emission of these chlorinated benzenes are estimated to be insigificant because of the low levels and the further dilution by factors of 103 to 105 in the atmosphere before any hunan or plant exposure. 

Knabe W., Monitoring of air pollutants by wild life plants and plant exposure Suitable bioindicators for different immissions types. In Steubing, L., Jager, H.-J. (Eds.) Monitoring of air pollutants by plants. Methods and problems . ISBN 90-6193-947-x, Dr. W. Junk Publishers, The Hague, pp. 59-72 (1982). 

Hardy bulbs, tulips require winter chilling to bloom. Where temperatures don t fall low enough, several weeks in a refrigerator at 40°F provides the necessary cold period. In cold-winter climates, plant tulips in fall, at least I month before the ground freezes. Keep bulbs cool until planting exposure to temperatures over 70°F reduces flower size. Plant... 

Nolt CL. 1988. Uptake and translocation of six organic chemicals in a newly-designed plant exposure system and evaluation of plant uptake aspects of the prebiologic screen for ecotoxicologic effects. MS Thesis. Cornell University, Ithace, NY. 

Another consideration is that an insect bite or a plant exposure may trigger an allergic reaction, even deadly anaphylactic shock, which may require the immediate administration of a histamine-countering drug such as epinephrine (adrenalin) or Benadryl . 

A thorough analysis of Warynski soil samples was performed to assess the potential plant exposure to three major metal contaminants, Pb, Cd and Zn. Tables 3 and 4 describe the major metal contaminant component of the Warynski soil, displaying available fractions and soil composition differentiated by depth. 

EXPOSURE ROUTES inhalation ingestion of contaminated drinking water skin and eye contact skin adsorption coal-fired power plants exposure to ink, paints, lacquers, and adhesives metal coating industries... 

Krenzelok EP et al Contrary to the literature, vomiting Is not a common manifestation associated with plant exposures. Vet Hum Toxicol 2002 44(5) 298-300. [PMID 12361120] (Based on review of national poison center data, 10 plants accounted for 32.3% of the reports of vomiting Philodendron, Spathiphyllum, Narcissus, DIeffenbachia, Phytolacca, Epipremnum, Euphorbia, Eucalyptus, Ficus, and Hedera.)... 

Mn/os R et al Toxidromes associated with the most common plant ingestions. Vet Human Toxicol 2001 43 366. [PMID 11757998] (Review of toxic syndromes associated with 20 common plant exposures, based on review of over 700,000 calls to poison control centers.)... 

Corrosion data have been generated for metals in the quench systems and refractories in the gasifier. However, specific oxidation-corrosion data in this paper will be limited to metals exposed in the high-temperature gas phase locations of the HYGAS and CONOCO COAL plants. Again, the results reported will emphasize trends indicated by the pilot plant exposures. 

High-temperature gas phase oxidation-corrosion data have been obtained for two exposures in the CONOCO COAL plant and one exposure in the HYGAS plant. Table VI summarizes the operating environments and in-plant times for these exposures. Since the pilot plants operate at variable temperatures, pressures, and gas compositions, weighted average values are given for the plant exposures. 

Figure 6. Typical corrosion specimen rack for Phase II pilot plant exposures...

CORROSION CONDITIONS IN CONOCO COAL AND HYGAS PLANT EXPOSURES... 

A review of contact dermatitis due to plant exposures indicated that mugwort was a relatively common cause of dermatitis (Kurz and Rapaport 1979 Saito et al. 1982). 

The direct effects of acidic precipitation on vegetation have been characterized by a number of researchers.Visible injury typically has been described as small necrotic lesions. The significance of these small lesions to host-parasite relationships has been discussed by Shriner. Disease incidence was shown to increase as a function of plant exposure to simulated acidic rain of pH 3.2, especially in the case of facultative parasites, which are most successful as pathogens when using breeches in host defense as... 

Simultaneous plant exposure to the aerosols and control environment - efforts were made to minimize individual plant differegces which may be apparent even in clonally propagated species. Chambers were designed to allow simultaneous, yet separate, exposure of different branches of the same plant to aerosol and control environments where appropriate, this system also allowed whole plant exposure. 

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