The value of water levels in water-based recreation: A pooled revealed preference/contingent behavior model

In order to study the influence of pH value on the plastic water-based gravure ink, the primary ink that is dispersed by high-speed grinding is maxed with good- compatible water-based resin (solution resin) and promoter in proportion. Getting the different pH value of ink samples by two methods, one way is the Amine neutralizers were added in the ink samples, the other is alkaline substances of the ink samples were volatilized by raising temperature. The influence of the pH value to the property of ink was analyzed by testing the pH value, viscosity, stetting, and glossiness of the proofs. The result indicates that changing the pH value of ink will affect the viscosity of ink. The pH value can influent the release of the resin in the ink to the solvent, so the dryness of ink was also influenced. The pH value of water-based ink has a certain influence to the glossiness of the proofs.

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Economic Value of Florida Water Resources: Value Derived by Tourists and Recreationists from Freshwater-Based Recreation

EDIS ◽

10.32473/edis-fe1067-2020 ◽

2019 ◽

Vol 2019 (5) ◽

pp. 8

Author(s):

Tatiana Borisova ◽

Tara Wade ◽

Xiang Bi ◽

Kurt Oehlbeck ◽

Kelly A. Grogan

Keyword(s):

Water Resources ◽

Natural Resource ◽

Economic Value ◽

Resource Economics ◽

Fact Sheet ◽

Water Based ◽

Economics Department ◽

Value Of Water ◽

Economic Studies

This 8-page fact sheet written by Tatiana Borisova, Tara Wade, Xiang Bi, Kurt Oehlbeck, and Kelly Grogan and published by the UF/IFAS Food and Resource Economics Department is part 3 of the series “Economic Value of Florida Water Resources.” It uses Florida-based economic studies to provide natural resource professionals and interested citizens with information regarding the value of water-based tourism and recreation in Florida. http://edis.ifas.ufl.edu/fe1067

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Water Tourism: A New Strategy for the Sustainable Management of Water-Based Ecosystems and Landscapes in Extremadura (Spain)

Land ◽

10.3390/land8010002 ◽

2018 ◽

Vol 8 (1) ◽

pp. 2 ◽

Cited By ~ 6

Author(s):

José Folgado-Fernández ◽

Elide Di-Clemente ◽

José Hernández-Mogollón ◽

Ana Campón-Cerro

Keyword(s):

Socioeconomic Development ◽

Supply And Demand ◽

Environmental Conservation ◽

Practical Action ◽

Human Wellbeing ◽

Water Based ◽

New Strategy ◽

Strategic Role ◽

Value Of Water

Water is an important element for the conservation of ecosystems and for human wellbeing. Recently, there has been a loss of awareness about the value of this resource, which requires scientific and practical action to encourage the rise of a new cultural attitude regarding water. Tourism gives water resources great potential, because it facilitates the development of such attractive resources, combining their protection with respectful use. However, studies that have explored the water tourism–territory relationship are still scarce. The objective of this work is to explore the current, touristic use of the aquifer sites in the Spanish region of Extremadura in order to determine whether these practices have the potential to generate new sensitivity about the value of water and its importance in socioeconomic development and environmental conservation. This research uses qualitative and quantitative methodologies, obtaining results that confirm the strategic role of water in the proper management of ecosystems and for the enhancement of human wellbeing. The empirical results show the beginning of a change in water-based tourism from both a supply- and demand-side perspectives. The conclusions suggest potential new measures that will facilitate a better understanding of the value of water, enhance the quality of life for everyone, and safeguard ecosystems.

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Stereological Analyses of Hepatocyte Ultrastructure Monitor Arsenic Liver Burdens

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s1431927600001896 ◽

1980 ◽

Vol 38 ◽

pp. 442-443

Author(s):

E. M. B. Sorensen ◽

R. R. Mitchell ◽

L. L. Graham

Keyword(s):

Drainage System ◽

Water Levels ◽

Ultrastructural Changes ◽

Hepatocyte Ultrastructure ◽

Lepomis Cyanellus ◽

Large Numbers ◽

Activation Data ◽

Water Analyses ◽

Municipal Lake ◽

Green Sunfish

Endemic freshwater teleosts were collected from a portion of the Navosota River drainage system which had been inadvertently contaminated with arsenic wastes from a firm manufacturing arsenical pesticides and herbicides. At the time of collection these fish were exposed to a concentration of 13.6 ppm arsenic in the water; levels ranged from 1.0 to 20.0 ppm during the four-month period prior. Scale annuli counts and prior water analyses indicated that these fish had been exposed for a lifetime. Neutron activation data showed that Lepomis cyanellus (green sunfish) had accumulated from 6.1 to 64.2 ppm arsenic in the liver, which is the major detoxification organ in arsenic poisoning. Examination of livers for ultrastructural changes revealed the presence of electron dense bodies and large numbers of autophagic vacuoles (AV) and necrotic bodies (NB) (1), as previously observed in this same species following laboratory exposures to sodium arsenate (2). In addition, abnormal lysosomes (AL), necrotic areas (NA), proliferated rough endoplasmic reticulum (RER), and fibrous bodies (FB) were observed. In order to assess whether the extent of these cellular changes was related to the concentration of arsenic in the liver, stereological measurements of the volume and surface densities of changes were compared with levels of arsenic in the livers of fish from both Municipal Lake and an area known to contain no detectable level of arsenic.

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