Smith C.B.,Headwaters Corporation
Journal of Environmental Management | Year: 2011
Active adaptive management is the centerpiece of a major species recovery program now underway on the central Platte River in Nebraska. The Platte River Recovery Implementation Program initiated on January 1, 2007 and is a joint effort between the states of Colorado, Wyoming, and Nebraska; the U.S. Department of the Interior; waters users; and conservation groups. This program is intended to address issues related to endangered species and loss of habitat along the Platte River in central Nebraska by managing land and water resources and using adaptive management as its science framework. The adaptive management plan provides a systematic process to test hypotheses and apply the information learned to improve management on the ground, and is centered on conceptual models and priority hypotheses that reflect different interpretations of how river processes work and the best approach to meeting key objectives. This framework reveals a shared attempt to use the best available science to implement experiments, learn, and revise management actions accordingly on the Platte River. This paper focuses on the status of adaptive management implementation on the Platte, experimental and habitat design issues, and the use of decision analysis tools to help set objectives and guide decisions. © 2010 Elsevier Ltd.
Griebling S.A.,University of Colorado at Boulder |
Griebling S.A.,Headwaters Corporation |
Neupauer R.M.,University of Colorado at Boulder
Water Resources Research | Year: 2013
Groundwater pumping may lead to reduction in surface water flows, which can compromise water supplies and habitat. In light of these threats, the need to minimize stream depletion, defined as the reduction in the flow rate in streams and rivers caused by groundwater pumping, becomes paramount. We develop adjoint equations to calculate stream depletion due to aquifer pumping. We consider a coupled groundwater and surface water system in which both the river head and river flow rate are impacted by drawdown in the aquifer as a result of pumping. Through an illustrative example, we show that the adjoint method for calculating stream depletion produces accurate results if the model is approximately linear. With only one simulation of the adjoint equations, stream depletion can be calculated for pumping at a well at any location in the model domain, which results in a substantial reduction in computational time as compared to the standard method of calculating stream depletion. ©2013. American Geophysical Union. All Rights Reserved.
Headwaters Inc | Date: 2015-06-07
A portable rechargeable personal ionic air purifier energizing a personal airspace and cleaning particulate pollutants therefrom in a manner that poses little or no personal shock risk and that minimizes battery drain to maximize battery life includes ionization means and ionization actuation means cooperative to provide ion bursts at regular intervals to energize and to clean particulates from the personal airspace. The ionization means includes an ion emitter and the ionization activation means includes means for providing a pulse train of predetermined frequency and duty cycle. The ion emitter may be removably mounted to a portable housing and/or to a facemask or other objects in the personal airspace via an elongated flexible cable.
Headwaters Incorporated | Date: 2016-04-22
Cementitious mixtures comprising precipitate calcium carbonate (PCC) and hydraulic cement and methods of making same. The PCC may be obtained as a precipitate product from reaction of flue gas desulverization wastewater (FGDW) and sodium carbonate.
Headwaters Inc. | Date: 2013-03-12
System and method of all-night sleep management integrates the sleep cycle into the wake cycle with the result that the individuals sense of wholeness and overall well-being is promoted and improved day-in-day-out. In different embodiments, the system and method of all-night sleep management provides audio that a media player plays without potentially disruptive transitions to help people to manage tinittus or help babies or others to fall and stay asleep or to prevent failing to fall asleep or to prevent waking up of otherwise sensitive sleepers and provides an audio, video or other signal that an audio, video or other media player plays incorporating pacing, binaural beats, waveform manipulation, brainwave entrainment, light frequency, amplitude and color modulation or other techniques to draw people from the awake state, through one or more initial, staged intermediate sleep stages and back into the awake state. The media may be prerecorded media or may be provided by a programmed controller in response to user input selection.
Headwaters Incorporated | Date: 2014-10-10
A method and system for measuring the adsorption potential of fly ash. A sample of the fly ash is mixed with an optically active reagent. The mixture is irradiated with light at a given wavelength and an optical parameter of the irradiated sample, such as intensity of optical absorbance or fluorescence emission is measured by an optical measuring apparatus. The adsorption capacity of the sample is determined as a function of the optical measurement. The system comprises a controller that communicates with the optical absorption measuring apparatus and controls flow of fly ash and sacrificial agent to a reaction zone or housing wherein the fly ash is contacted by the sacrificial agent.
Headwaters Incorporated | Date: 2014-11-10
chemical reagents for control of adsorption characteristics of fly ash. sensors for measuring adsorption characteristics of fly ash; chemical reagent injection systems for applying chemical reagents to fly ash. engineering services for monitoring, measuring, and control of fly ash adsorption characteristics.
Headwaters Incorporated | Date: 2016-02-23
Building products and construction materials, namely, non-metal roofing, non-metal siding, non-metal siding accessories consisting of corner pieces, channel pieces, foam paneling, trim, shutters, mounting blocks and vents, non-metal decking and railing, manufactured stone, blocks, bricks, and other masonry units, and coal combustion byproducts, namely, fly ash, bottom ash, and synthetic gypsum. Disposal services related to non-toxic coal combustion byproducts, namely, fly ash, bottom ash, and synthetic gypsum. Transportation of coal combustion byproducts, namely, fly ash, bottom ash and synthetic gypsum.
Headwaters Incorporated | Date: 2016-06-07
Headwaters Inc. | Date: 2013-03-12
A sound machine having a pseudo random white noise generator provides white noise sound therapy of selectable tone/texture, bandwidth and/or peak frequency to those suffering from tinnitus or others seeking noise-masking or sleep or relaxation. The sound machine having a pseudo random white noise generator includes a user input interface having a tone/texture user input control, a band pass user input control and a peak select user input control. The tone/texture user input control selects the tone/texture of the white noise sound generated, the bandpass user input control the bandpass of the white noise sound generated and the peak select user input control provides the ability to select frequency peaks of the white noise sound generated.