Ecosystems and Human Health - Chapter 13 potx
Ecosystems and Human Health - Chapter 13 potx
...
Science
, 249, 137 8 138 1, 1990.
Report of the Working Group on Electric and Magnetic ELF Fields. Electric and
Magnetic Fields and Your Health. Publ. # H4 6-2 /8 9-1 40E, Min. Supply and
Services Canada, ... proximity and prolonged contact they entail. Other types of low-
frequency waves include microwaves, emissions from TVs, and radio-fre-
quency fields. High-tension li...
Ecosystems and Human Health - Chapter 4 potx
... formaldehyde gas (see Chapter 2), other
toxic chemicals, particulates such as asbestos fibers and fiberglass wool, and
radon-source ionizing radiation (see Chapter 12). Airtight houses and build-
ings, constructed ... reach 30 mps. Micro-
scopic particles are retained for 1 or 2 months in the upper and mid-tropo-
sphere and about 1 week in the lower troposphere (<1 mi).
Airborn...
Ecosystems and Human Health - Chapter 1 pptx
... such as
-NH
2
, -OH, -SH, or -COOH. The oxidation reactions include N- and
O-dealkylations, side-chain and aromatic hydroxylations, N-oxidation and
hydroxylation, sulfoxide formation, and desulfuration. ... environmental hazards — both man-
made and natural — and with the risks to human health that they pose. It is
designed such that topics are generally introduced in the...
Ecosystems and Human Health - Chapter 2 pps
... detecting one breast cancer
through annual mammography in 4 0- to 50-year-old women has been esti-
mated at $144,000. In the 5 5- to 65-year-old group, it drops to $90,000.
Legislators are required ... risk
factor (i.e., of human origin).
Risk assessment and carcinogenesis
As already noted, this is the most complicated and least reliable area regard-
ing the prediction of risk...
Ecosystems and Human Health - Chapter 3 pptx
... extreme and there may be short- or long-term effects
on human health. Usual disposal methods for these substances include surface
impoundments used in industry (45–55%), landfill sites (domestic and ... additives in Chapter 8). Both the EPA and the Envi-
ronmental Health Directorate of Health and Welfare Canada have set
maximum acceptable limits for toxicants in drinking water...
Ecosystems and Human Health - Chapter 5 doc
... rapidly and well absorbed from the gastrointes-
tinal tract, metabolized through dihalocarbonyl compounds via the cyto-
chrome P450-dependent, mixed-function oxidases to CO
2
and CO, and elim-
inated ... 2,3,7,8-tetrachlorodibenzo-
p
-
dioxin (TCDD = dioxin). Agent Orange, used as a defoliant in Vietnam, was
equal parts of 2,4,-D and 2,4,5,-T and contained TCDD as a cont...
Ecosystems and Human Health - Chapter 6 pps
... metallothioneins (MTs) based on their amino acid sequences. MT-I and
MT-II are the most widely distributed, while MT-III and MT-IV are restricted
to neuronal and squamous epithelial cells. MTs have a high affinity ... copper, mercury, and zinc. Such induction makes them important
defenses against heavy-metal poisoning, and experiments with knockout
mice have shown that the absence of...
Ecosystems and Human Health - Chapter 7 pps
... been demonstrated. The group includes toluene
(1-methylbenzene) and the xylenes (1, 2-, 1, 3-, and 1,4-dimethylbenzene), as
well as ethylbenzene and cumene (isopropylbenzene).
Dinitrobenzene is ... complex mixtures having nitro-
gen- and sulfur-containing elements (e.g., gasoline and other petroleum-
based products).
Industrially, the uses of solvents are many and varied. They...
Ecosystems and Human Health - Chapter 8 pdf
... percep-
tions and beliefs regarding herbal therapies, Pharmacotherapy, 20, 83–87, 2000.
Baily-Klepser, T. and Klepser, M.E., Unsafe and potentially safe herbal therapies, Am.
J. Health- Syst. ... conditions of husbandry and
hygiene. The effect was confirmed later for other antibiotics and the mech-
anism remains elusive. There is by now a long list of antibiotics and other
anti-in...
Ecosystems and Human Health - Chapter 9 pptx
... diquat.
O
2
N
CHCH
2
CH
3
CH
3
NO
3
OH
O
2
N
CH
3
NO
2
OH
DINOSEB
( 2-sec-buty 1-4 , 6-dinitropheno1 )
DNOC
( 4, 6-dinitro-o-cresol )
H
3
CCH
3
NN
++
PARAQUAT DIQUAT DIBROMIDE
NN
+
+
2Br
-
©2001 CRC Press LLC
Nonspecificity
Broad-spectrum pesticides, ... all use in 1987.
4,6-Dinitro-
o
-cresol (DNOC, see Figure 35) has caused acute poisoning
in humans with signs and symptoms i...
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