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Life and Death in the Field: Farmer Suicide and the Necessity to Feed

Description: Farmer suicide is at crisis levels in the United States and India. This crisis is both a problem of experiential knowledge within infrastructure as well as a problem of discourse power. I argue that the logical abstraction required to conceptualize and evaluate farmer suicide cannot be separated from the overall experience of farmer suicide. Rather than existing as distinctly separate phenomena, these elements are co-constitutive. Despite the Centers' for Disease Control identification and des… more
Date: August 2021
Creator: Opoien, Jared Wesley
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Change Characteristics and Interactions of Soil Moisture and Temperature in the Farmland in Wuchuan County, Inner Mongolia, China

Description: Article studying the change characteristics of soil moisture and temperature under different water level treatments in Wuchuan County, Inner Mongolia, China.
Date: May 14, 2020
Creator: Pan, Feifei; Zhang, Ziyuan; Pan, Zhihua; Zhang, Jun; Han, Guolin; Huang, Na et al.
Item Type: Refine your search to only Article
Partner: UNT College of Liberal Arts & Social Sciences
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Winter storms and the Spring Transition over the western U.S.: Quantifying discrepancies between coarse and high-resolution simulations and observations

Description: This project addressed the ability of the Community Climate System Model (CCSM3 and CCSM4), the Community Earth System Model (CESM), and other models to simulate the processes involved in controlling winter storms affecting the U.S. West Coast as well as other precipitation processes in the climate system.
Date: November 14, 2012
Creator: Miller, Arthur; Cayan, Daniel & Pierce, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neptunium_Oxide_Precipitation_Kinetics_AJohnsen

Description: We evaluate the proposed NpO{sub 2}{sup +}(aq)-NpO{sub 2}(cr) reduction-precipitation system at elevated temperatures to obtain primary information on the effects of temperature, ionic strength, O{sub 2} and CO{sub 2}. Experiments conducted on unfiltered solutions at 10{sup -4} M NpO{sub 2}{sup +}(aq), neutral pH, and 200 C indicated that solution colloids strongly affect precipitation kinetics. Subsequent experiments on filtered solutions at 200, 212, and 225 C showed consistent and distinctiv… more
Date: June 8, 2012
Creator: Johnsen, A. M.; Roberts, K. E. & Prussin, S. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Description of Atmospheric Conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)

Description: Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a global atmospheric model predicated on meteorological measurements and numerical weather predictions. GDAS provides altitude-dependent profiles of the main state variables of the atmosphere like temperature, pressure, and humidity. The original data and their application to the air shower reconstruction of the Pierre Auge… more
Date: January 1, 2012
Creator: Abreu, P.; Aglietta, M.; Ahlers, M.; Ahn, E. J.; Albuquerque, I. F. M.; Allard, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wave-Based Subsurface Guide Star

Description: Astronomical or optical guide stars are either natural or artificial point sources located above the Earth's atmosphere. When imaged from ground-based telescopes, they are distorted by atmospheric effects. Knowing the guide star is a point source, the atmospheric distortions may be estimated and, deconvolved or mitigated in subsequent imagery. Extending the guide star concept to wave-based measurement systems to include acoustic, seismo-acoustic, ultrasonic, and radar, a strong artificial scatt… more
Date: July 26, 2011
Creator: Lehman, S. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mathematical Analysis of a Novel Approach to Maximize Waste Recovery in a Life Support System

Description: NASA has been evaluating closed-loop atmosphere revitalization architectures carbon dioxide, CO2, reduction technologies. The CO2 and steam, H2O, co-electrolysis process is another option that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide, CO and hydrogen, H2 mixture) for terrestrial (energy production) application. The tech… more
Date: February 1, 2011
Creator: McKellar, Michael G.; Wood, Rick A.; Stoots, Carl M.; Mulloth, Lila & Luna, Bernadette
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scanning Transmission X-ray Microscopy: Applications in Atmospheric Aerosol Research

Description: Scanning transmission x-ray microscopy (STXM) combines x-ray microscopy and near edge x-ray absorption fine structure spectroscopy (NEXAFS). This combination provides spatially resolved bonding and oxidation state information. While there are reviews relevant to STXM/NEXAFS applications in other environmental fields (and magnetic materials) this chapter focuses on atmospheric aerosols. It provides an introduction to this technique in a manner approachable to non-experts. It begins with relevant… more
Date: January 20, 2011
Creator: Moffet, Ryan C.; Tivanski, Alexei V. & Gilles, Mary K.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Climate Research Roadmap Workshop: Summary Report, May 13-14, 2010

Description: In recognition of the ongoing advances and challenges of climate change research, DOE's Office of Biological and Environmental Research (BER) organized a workshop asking the scientific community to identify the current state of climate science. The goal of the workshop was to determine the research challenges important for developing a predictive understanding of global climate. Participants were asked to focus on interdisciplinary research that capitalized on BER's scientific strengths in Atmo… more
Date: September 1, 2010
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Effect of Increasing Nitrogen Deposition on Soil Microbial Communities

Description: Increasing nitrogen deposition, increasing atmospheric CO2, and decreasing biodiversity are three main environmental changes occurring on a global scale. The BioCON (Biodiversity, CO2, and Nitrogen) ecological experiment site at the University of Minnesota's Cedar Creek Ecosystem Science Reserve started in 1997, to better understand how these changes would affect soil systems. To understand how increasing nitrogen deposition affects the microbial community diversity, heterogeneity, and function… more
Date: May 17, 2010
Creator: Xiao, Shengmu; Xue, Kai; He, Zhili; VanNostrand, Joy D.; Liu, Jianshe; Hobbie, Sarah E. et al.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
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Mathematical Analysis of High-Temperature Co-electrolysis of CO2 and O2 Production in a Closed-Loop Atmosphere Revitalization System

Description: NASA has been evaluating two closed-loop atmosphere revitalization architectures based on Sabatier and Bosch carbon dioxide, CO2, reduction technologies. The CO2 and steam, H2O, co-electrolysis process is another option that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide, CO and hydrogen, H2 mixture) for terrestrial (energy p… more
Date: March 1, 2010
Creator: McKellar, Michael G.; Sohal, Manohar S.; Mulloth, Lila; Luna, Bernadette & Abney, Morgan B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Kinetic studies and computational modeling of atomic chlorine reactions in the gas phase.

Description: The gas phase reactions of atomic chlorine with hydrogen sulfide, ammonia, benzene, and ethylene are investigated using the laser flash photolysis / resonance fluorescence experimental technique. In addition, the kinetics of the reverse processes for the latter two elementary reactions are also studied experimentally. The absolute rate constants for these processes are measured over a wide range of conditions, and the results offer new accurate information about the reactivity and thermochemi… more
Date: August 2009
Creator: Alecu, Ionut M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

ACRF Instrumentation Status and Information April 2009

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: May 7, 2009
Creator: Voyles, JW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Year of Radiation Measurements at the North Slope of Alaska Second Quarter 2009 ARM and Climate Change Prediction Program Metric Report

Description: In 2009, the Atmospheric Radiation Measurement (ARM) Program and the Climate Change Prediction Program (CCPP) have been asked to produce joint science metrics. For CCPP, the second quarter metrics are reported in Evaluation of Simulated Precipitation in CCSM3: Annual Cycle Performance Metrics at Watershed Scales. For ARM, the metrics will produce and make available new continuous time series of radiative fluxes based on one year of observations from Barrow, Alaska, during the International Pola… more
Date: April 15, 2009
Creator: McFarlane, S. A.; Shi, Y. & Long, C. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ACRF Instrumentation Status: New, Current, and Future March 2009

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: March 15, 2009
Creator: Voyles, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ACRF Instrumentation Status: New, Current, and Future - January 2009

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: March 2, 2009
Creator: Voyles, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ACRF Instrumentation Status: New, Current, and Future February 2009

Description: The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date: February 15, 2009
Creator: Voyles, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report - October 1 - December 31, 2008

Description: Description. Individual raw data streams from instrumentation at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility (ACRF) fixed and mobile sites are collected and sent to the Data Management Facility (DMF) at Pacific Northwest National Laboratory (PNNL) for processing in near real-time. Raw and processed data are then sent daily to the ACRF Archive, where they are made available to users. For each instrument, we calculate the ratio of the actual number of data record… more
Date: January 15, 2009
Creator: Sisterson, DL
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Aerosol Properties and Climate Impacts

Description: This report critically reviews current knowledge about global distributions and properties of atmospheric aerosols as they relate to aerosol impacts on climate. It assesses possible steps to substantially reduce uncertainties in aerosol radiative forcing estimates.
Date: January 2009
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Item Type: Refine your search to only Book
Partner: UNT Libraries
open access

Studies of regional-scale climate variability and change: Hidden Markov models and coupled ocean-atmosphere modes

Description: In this project we developed further a twin approach to the study of regional-scale climate variability and change. The two approaches involved probabilistic network (PN) models (sometimes called dynamic Bayesian networks) and intermediate-complexity coupled ocean-atmosphere models (ICMs). We thus made progress in identifying the predictable modes of climate variability and investigating their impacts on the regional scale. In previous work sponsored by DOE’s Climate Change Prediction Prog… more
Date: October 14, 2008
Creator: Ghil, M.; Kravtsov, S.; Robertson, A. W. & Smyth, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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