Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Affection, natural

The first major federal regulatory event affecting natural gas pipelines was the Natural Gas Act of 1938, which gave the Federal Power Commission jurisdiction to regulate three areas (1) pipeline sales of gas purchased from producers and resold to local distribution companies in interstate commerce (2) transportation m interstate commerce and (3) the facilities used for such sales and such transportation. [Pg.838]

Wellhead Pricing With passage of the Natural Gas Wellhead Decontrol Act of 1989, all remaining wellhead price controls on natural gas were lifted. As a result, federally mandated natural gas wellhead prices no longer exist. With this, the competitive marketplace has become the most important factor affecting natural gas wellhead prices, along with weather, demand, pricing of competitive fuels and competition for supplies. [Pg.839]

Natural resources affect people and people affect natural resources. Many qualities or attributes of nature are customarily described as "natural resources" - soils, climate, plants, minerals, and others. But these are not really resources for human welfare until appropriate amounts of human energy, resourcefulness, capital, and managerial capacity have been applied to these qualities of nature, to transform them into materials and services usable by people. [Pg.9]

May affect natural groundwater flow gradients at a site, potentially resulting in lateral or vertical migration of the contaminant plume... [Pg.1002]

Selection of sites was directed to the analysis of the influence of different facilities and/or activities that a priori could affect natural animal populations from the river. There are at least three industrialized areas that discharge different kind of pollutants into the river system (see Fig. 1 for the location of different cities, towns, and geographical features). The most upstream one is the industrial park... [Pg.276]

The Atlas provides a basis for further research into factors that affect natural groundwater chemistry. It also serves as a baseline for comparing shifts in water quality overtime due to climatic changes and other factors. [Pg.459]

Malorni, W., Straface, E., Di Genova, G., Fattorossi, A., Rivabene, R., Camponeschi, B., Masella, R., and Viora, M., 1997, Oxidized low-density hpoproteins affect natural killer cell activity by impairing cytoskeleton function and altering the cytokine network, Exp. Cell Res. 236 436-445. [Pg.147]

ORIGIN OF INJURIOUS CONCENTRATIONS OF OZONE AND OXIDANTS AFFECTING NATURAL ECOSYSTEMS... [Pg.591]

Parasitic plants often use chemicals released by their host plant to stimulate seed germination, to locate the host, or for haustorial development. Many different compounds are involved, including strigolactones, quinones, coumarins, flavonoids, and other phenolics. Flavonoids contribute to signaling in some species but not others. Haustorial development in Triphysaria versicolor can be induced in vitro by the anthocyanidins petunidin, cyanidin, pelargonidin, delphinidin, as well as their glycosides obtained from the host plant.Anthocyanins are not usually found in root exudates, however, and thus the mechanism by which they affect natural signals for parasitic plants in the soil is not clear. [Pg.421]

In addition to the damage acid rain causes to structures, acid rain also affects natural environments. Significant loss of spruce forests due to the burning of spruce needles by acid rain has occurred in Scandinavia. Acid rain also extracts a heavy toll on aquatic systems and associated organisms. Most adult fish cannot tolerate pHs much lower than 5.0, and even the most tolerant species will not survive below a pH of 4.0. Fish larvae are even more susceptible to low pH levels. Insects and their larvae also perish when pH approaches 4.0 in aquatic systems. Numerous lakes in upstate New... [Pg.165]

Reversion - The softening of vulcanized rubber when it is heated too long or exposed to elevated temperatures. It is a deterioration in physical properties, (extreme reversion may result in tackiness.) This most commonly affects natural rubber linings. [Pg.270]

Mechanical erosion is influenced by temperature differences, plant roots, wind, water and glaciers. A well-known example is frost which not only affects nature but can also have annoying consequences inside, just think of frozen water pipes. In both cases the fact that water increases in volume when it freezes is the cause of all problems. [Pg.108]

N6el, C Bril, H., Courtin-Nomade, A. and Dutreuil, J.-P. (2003) Factors affecting natural development of soil on 35-year-old sulphide-rich mine tailings. Geoderma, 111(1-2), 1-20. [Pg.221]

In his essay, then, Dickerson does not say scientific evidence has shown that the supernatural has never affected nature (for those concerned about the definition of supernatural, substitute higher intelligence. Rather, he argues that in principle, science should not invoke it. The clear implication is that it should not be invoked whether it is true or not. It is relevant to our evaluation of his argument that Dickerson is a member of the American Scientific Affiliation, so he believes in God. He has no a priori reason to think that nothing beyond nature exists, but he thinks it is not good science to offer the supernatural as an explanation for a natural event. [Pg.239]

The fourth and most powerful reason for science s reluctance to embrace a theory of intelligent design is also based on philosophical considerations. Many people, including many important and well-respected scientists, just don t want there to be anything beyond nature. They don t want a supernatural being to affect nature, no matter how brief or constructive the interaction may have been. In other words, like young-earth creationists, they bring an a priori philosophical commitment to their science that restricts what kinds of explanations they will accept about the physical world. Sometimes this leads to rather odd behavior. [Pg.243]

Botanical insecticides, such as neem and ryania, also are allowed in organic production, but as with all insecticides, they should be used only as a last resort. Although these materials are naturally based, some materials may affect natural enemies. [Pg.9]

It is a liver tumor promoter, teratogenic, and immunotoxic affecting natural killer cells. [Pg.792]

Methodological approach basehne separation achieved within <10 min. The analytical performance characteristics studied (DL < 100 ng As L for all the species evaluated). The feasibility for the analysis of normal As levels in drinking water was demonstrated. However, it was observed that matrix composition and the sample treatment may affect natural As(in)/As(V) distribution... [Pg.221]

The types of contamination that emanate from the oil industry and can affect natural water can be classified as follows ... [Pg.306]

The "natural" shape or habit of a crystal obtained in the medium from which it is crystallized is of minus) importance in designing an industrial-scale ciystallizer. Crystal habit is also of extrema interest to crystallization thcorisia, Many anicles have been writtno describing variables ther affect natural habit, and)... [Pg.635]

We have incorporated this hypothesis into Fig. 4.14, which is an expanded tritrophic version of Fig. 4.9. The top of this diagram now includes feedback between tunneling, which elicits oxygenated terpene and monoterpene emission and resulting arrival by predators and competitors, and impacts of these predators and competitors on beetle reproduction. Both of these relationships are well supported in the literature. " However, this model also proposes that the spatial and temporal patterns of host availability, in terms of both compromised tree defenses and beetle perception of these alterations, affect natural enemy numbers. Natural enemy populations in turn affect beetle population size, which in turn affects host acceptance behavior (Fig. 4.14 center). [Pg.105]

Standards are statements (i.e., requirements or recommendations) about interface objects tmd actions (Buie 1999). They address the physical, cognitive, and affective nature of computer interaction. They are written in general and flexible terms because they must be applicable to a wide vruiety of applications and target user groups. International (e.g., ISO 9241), national (e.g., ANSI, BSI),... [Pg.1215]

Environmental impacts occur during loading, en route, or during unloading and affect natural systems, manmade buildings and installations, and people (e.g., due to injuries or deaths) (Chadwick etal., 1987). [Pg.741]


See other pages where Affection, natural is mentioned: [Pg.54]    [Pg.109]    [Pg.251]    [Pg.630]    [Pg.624]    [Pg.303]    [Pg.207]    [Pg.251]    [Pg.3]    [Pg.160]    [Pg.79]    [Pg.235]    [Pg.36]    [Pg.249]    [Pg.3]    [Pg.578]    [Pg.67]    [Pg.5]    [Pg.340]    [Pg.3]    [Pg.382]    [Pg.52]    [Pg.126]    [Pg.125]    [Pg.365]   
See also in sourсe #XX -- [ Pg.70 ]




SEARCH



Isotopes as Monitors of Anthropogenic and Natural Sources Affecting the Surficial Environment

© 2024 chempedia.info