Albert L. Page

University of California, Riverside | UCR · Department of Environmental Sciences

Managerial ties include business ties and political ties, but their individual effects on product innovation remain underexplored in the literature. Integrating social network theory and institution theory, this study first proposes a nonlinear relationship between business/political ties and product innovation and further examines the moderating r...

As a consequence of the National Highway Traffic Safety Act of 1966, there exists a complete data set of safety-related automobile recalls in the US. Attempts to use these data in marketing-related studies have proven to be marginally successful. A data transformation is described that permits better use of this nformation,and its application is il...

This exploratory study empirically tests a typology that classifies service organizations based on the nature of customer involvement in the production of the service. The typology is tested in the context of actual site selection decisions which are found to vary with three types of services identified in the typology.

In an earlier study, an attempt was made to assess the macro effect of mandated auto recall on the U.S. auto industry. With the amount of information available at that time, recalls were numerically significant and increasing, the industry appeared to be relatively unaffected by their mandated imposition. Out of 248 campaigns, only 15 were 100 perc...

This chapter describes a model of industry university collaboration that provides a structured and systematic approach to producing tangible, actionable insights and new product concepts for organizations. The specific program described has been developed at the University of Illinois at Chicago (UIC), where it is called Interdisciplinary Product D...

Firms' use of the interorganizational and intraorganizational transferred knowledge is critical for product innovation in emerging economies. Based on institutional theory, this research examines the moderating effects of firms' institutional environments on the relationships between firms' transferred knowledge and their product innovation. The em...

Metal uptake by different plant species was quantified in sand media amended with biosolids in a sand-culture hydroponic medium. In a previous paper (Koo et al. 2006), we concluded that total quantities of organic acids were greatest in treatments containing both plants and biosolids, with lesser amounts in treatments with plants alone, biosolids-t...

Application of phosphate fertilizer can be a significant contributor of potentially hazardous trace elements such as arsenic, cadmium, and lead in croplands. These trace elements have the potential to accumulate in soils and be transferred through the food chain. We articulated the environmental risks of trace elements associated with long-term pho...

Managerial ties, the personal networks of senior managers, have been found to be facilitators of firm performance because of their network benefits. However, social network theory suggests that managerial ties only play a “conduit” role by providing possibilities and opportunities to approach external resources. How can firms turn these possibiliti...

In saline soils, trace elements most likely to be deficient for plant growth are Cu, Fe, Mn and Zn. Boron deficiencies, common to soils in temperate, semi-humid and humid regions, are rarely a problem for agricultural production in saline soils. Since most trace elements have low solubility in neutral and alkaline soils, trace element toxicities to...

Organic acids present in the rhizosphere of growing plants are widely recognized to be responsible for dissolving the solid phase metals in the soil and making them available for plant absorption. We proposed a root exudates-based model to assess the long-term phytoavailability of metals in biosolids-amended soils. The phytoavailability of biosolid...

Potentially hazardous trace elements such as Cd, Cu, Cr, Ni and Zn are expected to accumulate in biosolids-amended soil and remain in the soil for a long period of time. In this research, uptake of metals by food plants including cabbage, carrot, lettuce and tomato grown on soils 10 years after biosolids application was studied. All the five metals...

IntroductionBiosolids-Borne Trace Elements in SoilsAssessing Availability of Trace Elements in Biosolids-Amended SoilsLong-Term Availability Pool Assessment through a Root Exudates-Based ModelConclusions References

To evaluate the effects of binary interactions (As(V) Ã Se(VI), Se(VI) Ã Mo(VI) and As(V) Ã Mo(VI)) on growth and composition of alfalfa (Medicago sativa L.), three glasshouse sand culture experiments were conducted. Added Mo(VI) concentrations in the nutrient solutions had no significant effect on the tissue yield of alfalfa. Arsenic showed some a...

Red clover (Trifolium prateuse L.), sweet clover (Meliotus alba Medik.), alfalfa (Medicago sativa L.), and crown vetch (Vica villosa Roth) were grown in nitrogen-free Hoagland's solution in a declining nutrient condition. Increases in acidity of the nutrient solutions were recorded over the experimental period. In general, the excess bases and the...

The effects of saturating cation (Na or K) and pH on the critical coagulation concentrations (CCCs) of illite were measured. Flocculation series tests showed that between pH 6 and 11, the time-in-variant CCCs of Na illite increased from 6 to 58 mol Na m⁻³; release of interlayer K was controlled by adding 0.1 mol K m⁻³ to Na-illite suspensions...

We collected and analyzed over 600 soil samples from the vegetable production fields in seven regions across California, examining the total As, Cd, Pb, P, and Zn concentrations of the soils. The ranges for baseline concentrations were determined for each region. The total P and Zn contents of the soils in comparison to the baseline ranges served a...

In land application of biosolids, the majority of the introduced metals are associated with the solid phase. Plant absorption of biosolid-borne metals would take place in the soil and root interface, i.e. the rhizosphere where root exudates play important roles in dissolving metals and making them available for plant uptake. Plant roots exude a var...

The solution to solid partitioning coefficient (Kd) is an important parameter in assessing the environmental and health risks of potentially toxic metals in soils. Ideally, the metal in solution phase should be determined at the field moisture condition under which the exposures take place. In reality, it is often represented by the concentration i...

In sorption experiments, Cd in the solution phase may be surface adsorbed or immobilized and precipitated into mineral phases. The reaction kinetics can be described by a two-site model combining a linear instantaneous model for the surface adsorption and a first-order reaction kinetic model with forward and backward reaction constants for the immo...

Organic acid production by plants and microorganisms was quantified in sand media amended with biosolids in the presence and absence of corn (Zea mays L.) in a sand‐culture hydroponic medium. Total quantities of organic acids were greatest in treatments containing both plants and biosolids, with lesser amounts in treatments with plants alone, bioso...

This study delineated the mathematical forms for the reactions involved in the mass balance of As in cropland soils. Even mathematically simplified, many model parameters are required to define the reactive processes involved. Example simulations were conducted based on the range of parameter values and initial conditions derived from published lit...

The rhizosphere, a thin layer of soil adjacent to roots of living plants, is a chemically complex and microbiologically dynamic segment of the soil. At any given time, it accounts for a small fraction of the bulk soil in the root zone. All the surface soils, at one time or another, may be under the influence of roots. The rhizosphere receives exuda...

Human exposure to potential toxic pollutants and the associated health risk is a focus of current environmental and medical studies. However, the transfer and partitioning of the pollutants in the soil-crop systems turns to be a key problem for evaluating the food intake of the pollutants. This paper deals with the methodology and the approach of c...

Certain trace elements are essential for humans, plants and animals, but become toxic at higher concentrations. For many trace elements, the margin of safety between beneficial and harmful is narrow. Deficiencies of trace elements are common plant nutritional problems in crop production. While most trace elements in soils are beneficial to plant gr...

Slow mineralization of organic matter in sewage sludge-treated soil could release metals into more labile forms, which would then be more available for plant absorption. We examined the effect of soil organic matter decomposition on the phytoavailability of Cd in soils which, prior to this experiment, received 0 (control), 22.5, 45, 90, 180 Mg ha-1...

The nature of organic and inorganic phosphorus (P) in fertilized and unfertilized samples of Vilcun soil, a Chilean medial mesic typic Dystrandept which was studied through phosphorus‐nuclear magnetic resonance (P‐NMR) analysis carried out on a single alkaline extraction. The total P contents ranged from 1,506 mg P kg (B horizon, unfertilized soil)...

Two hypotheses have been proposed to describe the phytoavailability of potentially toxic metals in sewage sludge treated soils. The plateau theory argues that the metal adsorption capacity added with sludge will persist as long as the metals of concern persist in the soil and the metals would remain in chemical forms not readily available for plant...

We examined the methodology of developing globally applicable human health-related chemical guidelines using wastewater for crop irrigation. Two approaches may be used to develop pollutant loading. Guidelines: (a) preventing pollutant accumulation in waste receiving soil and (b) maximizing soil's capacity assimilate, attenuate, and detoxify harmful...

We examined the methodology of developing globally applicable human health-related chemical guidelines of using wastewater for crop irrigation. Two approaches may be used to develop pollutant loading guidelines: (a) preventing pollutant accumulation in waste receiving soil and (b) maximizing soil's capacity to assimilate, attenuate, and detoxify ha...

Total carbon (C) in soils is the sum of both organic and inorganic C. Organic C is present in the soil organic matter fraction, whereas inorganic C is largely found in carbonate minerals. The wet combustion analysis of soils by chromic acid digestion has long been a standard method for determining total C, giving results in good agreement with dry...

The determination of total nitrogen (N) in soils and other complex heterogeneous materials containing several forms of N presents many difficulties. A.W. J., Dyck and R. R. McKibbin analyzed 26 organic soils by Dumas and Kjeldahl methods and found that with every sample tested, the Dumas method gave a considerably higher N value. The Kjeldahl proce...

This chapter describes prevalent laboratory methods for determining salinity based on measurements of electrical conductivity (EC) or total dissolved solids after evaporation at 180°C. It discusses various methods for determining the concentrations of individual inorganic solutes in waters and soil extracts in common use in laboratories having mode...

Heavy metals in sewage sludges accumulate in soils after successive sludge applications and can be toxic to plants, soil organisms, as well as humans and animals along the food chain. Because of this potential threat, many countries have set limits to the additions of metals in sludges to agricultural land, based on (i) the concentrations of metals...

Kesterson Reservoir and other impoundments in the San Joaquin Valley, California, have received large volumes of saline irrigation drainage water that is enriched with trace elements, including As, B, Mo, Se, U, and V. When these ponds are allowed to dry and revert to terrestrial ecosystems, careful soil water and vegetation management may be neede...

To further understand the colloidal behavior of clay minerals in soils, rheological properties of illite suspensions were investigated and related to colloidal stability. Using a concentric cylinder viscometer to measure shear stress as a function of shear rate, Bingham yield stresses (τB) and plastic viscosities (ηpl) were determined for homoionic...

The shoots of primary Se‐accumulating plant species can accrue Se to several thousand micrograms per gram of dry weight, even when growing in gypsiferous soils, yet no detailed studies of the mutual antagonism between SeO 4 and SO 4 during plant uptake have been conducted with these species. In a comparative study, we grew a nonaccumulator (alfalfa...

This study illustrates a methodology of evaluating phytotoxity criteria for metals, when sewage sludges are applied on cropland. The analyses are based on data available in technical literature and fundamental principles of soil fertility and plant nutrition. First, data from laboratory experiments, where plants were grown in media treated with onl...

Arsenic (As), selenium (Se), and molybdenum (Mo) have become increasingly important in the terrestrial and agrobiological environment in some parts of the western USA. A four factorial [3 As X 3 Se X 2 Mo X 2 P concentrations] completely randomized glasshouse study was conducted to evaluate the competitive interactions between As(V), Se(VI), Mo(VI)...

Agricultural drainage water from the west side of the San Joaquin Valley, CA is highly salinized, and is often contaminated with an assortment of metals and metalloids, including Se. Among proposed disposal options, vegetation management may be a critical component of remediation strategies designed to reduce soil or sediment concentrations of Se t...

We investigated groundwaters in the vicinity of a coal ash site near an electric generating station in the western U.S.A. The purpose of the study was to ascertain why fine particles or colloids appear in some subsurface water samples there. If such fine particles are merely introduced during bailing or pumping operations which suspend otherwise im...

Deep cores taken on an uncultivated desert alluvial fan revealed two large volumes of coarse soil with high NO3 levels which were unpredictable both laterally and vertically and unrelated to alluvial strata. The large soil volumes with elevated NO3 levels were found 2.7 to 7.3 m deep in 4 cores at one 3 by 3 m site, and 8.8 to 21 m deep in 2 cores...

various places of the world. Thus, it is hoped that this up-to-date subseries would increase the "awareness" of the world's citizens and encourage governments to devote more attention and resources to address this issue. The series editors thank the international panel of contributors for bringing this timely series into completion. We also wish to...

countries accelerating to reach a consensus on the role that atmospheric emissions and acidic precipitation play in the environment, publication of this series is timely. The editors thank the contributors to this volume for their efforts in describing a wide array of atmospheric topics, all of which are important to an understanding of the acidic...

The release of native soil Mn was evaluated under laboratory conditions in Aiken (fine, kaolinitic, thermic Abruptic Durixeralfs) and Redding (fine, kaolinitic, thermic Abruptic Durixeralfs) clay loam soils saturated with either deionized water, or 74 and 150mmol L-1 NaCl-CaCl2 solution. As the NaCl-CaCl2 concentrations increased, soil solution Mn...