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Advanced Nanostructured Molecular Sieves for Energy Efficient Industrial Separations
Due to the very small relative volatility difference between propane and propylene, current propane/propylene separation by distillation requires very tall distillation towers (150-250 theoretical plates) and large reflux ratios (up to 15), which is considered to be the most energy consuming large-scale separation process. Adsorptive separation processes are widely considered to be more energy-efficient alternatives to distillation. However, slow diffusion kinetics/mass transport rate through the adsorbent bed often limits the performance of such processes, so further improvements are possible if intra-particle mass transfer rates can be improved. Rive Technology, Inc. is developing and commercializing its proprietary mesoporous zeolite technology for catalysis and separation. With well-controlled intracrystalline mesoporosity, diffusion kinetics through such mesoporous zeolite based catalysts is much improved relative to conventional zeolites, leading to significantly better product selectivity. This 'proof-of-principle' project (DE-EE0003470) is intended to demonstrate that Rive mesoporous zeolite technology can be extended and applied in adsorptive propane/propylene separation and lead to significant energy saving compared to the current distillation process. In this project, the mesoporous zeolite Y synthesis technology was successfully extended to X and A zeolites that are more relevant to adsorbent applications. Mesoporosity was introduced to zeolite X and A for the first time while maintaining …
Date:
January 18, 2012
Creator:
Li, Kunhao
Object Type:
Report
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan.
Date:
January 18, 2012
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
Algeria: Current Issues
This report focuses on current political issues, as well as Algeria's economy, its foreign policy, and U.S.-Algeria relations. Key issues include reform efforts initiated after anti-government demonstrations in early 2011 and amid the regional tumult of the "Arab Spring"; terrorism and related security issues; human rights; national reconciliation following the "dark decade" of the 1990s Islamist insurgency; and activism in ethnic Berber areas.
Date:
January 18, 2012
Creator:
Arieff, Alexis
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 202, Ed. 1 Wednesday, January 18, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 18, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Assessing the Control Systems Capacity for Demand Response in California Industries
California's electricity markets are moving toward dynamic pricing models, such as real-time pricing, within the next few years, which could have a significant impact on an industrial facility's cost of energy use during the times of peak use. Adequate controls and automated systems that provide industrial facility managers real-time energy use and cost information are necessary for successful implementation of a comprehensive electricity strategy; however, little is known about the current control capacity of California industries. To address this gap, Lawrence Berkeley National Laboratory, in close collaboration with California industrial trade associations, conducted a survey to determine the current state of controls technologies in California industries. This,study identifies sectors that have the technical capability to implement Demand Response (DR) and Automated Demand Response (Auto-DR). In an effort to assist policy makers and industry in meeting the challenges of real-time pricing, facility operational and organizational factors were taken into consideration to generate recommendations on which sectors Demand Response efforts should be focused. Analysis of the survey responses showed that while the vast majority of industrial facilities have semi- or fully automated control systems, participation in Demand Response programs is still low due to perceived barriers. The results also showed that the …
Date:
January 18, 2012
Creator:
Ghatikar, Girish; McKane, Aimee; Goli, Sasank; Therkelsen, Peter & Olsen, Daniel
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 13, Ed. 1 Wednesday, January 18, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 162, No. 47, Ed. 1 Wednesday, January 18, 2012
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
January 18, 2012
Creator:
Gonzalez, Terrie
Object Type:
Newspaper
System:
The Portal to Texas History
Coherent Anti-Stokes Raman Scattering Spectroscopy of Single Molecules in Solution
During this funding period, we have developed two breakthrough techniques. The first is stimulated Raman scattering microscopy, providing label-free chemical contrast for chemical and biomedical imaging based on vibrational spectroscopy. Spontaneous Raman microscopy provides specific vibrational signatures of chemical bonds, but is often hindered by low sensitivity. We developed a three-dimensional multiphoton vibrational imaging technique based on stimulated Raman scattering (SRS). The sensitivity of SRS imaging is significantly greater than that of spontaneous Raman microscopy, which is achieved by implementing high-frequency (megahertz) phase-sensitive detection. SRS microscopy has a major advantage over previous coherent Raman techniques in that it offers background-free and readily interpretable chemical contrast. We demonstrated a variety of biomedical applications, such as differentiating distributions of omega-3 fatty acids and saturated lipids in living cells, imaging of brain and skin tissues based on intrinsic lipid contrast, and monitoring drug delivery through the epidermis. This technology offers exciting prospect for medical imaging. The second technology we developed is stimulated emission microscopy. Many chromophores, such as haemoglobin and cytochromes, absorb but have undetectable fluorescence because the spontaneous emission is dominated by their fast non-radiative decay. Yet the detection of their absorption is difficult under a microscope. We use stimulated emission, which …
Date:
January 18, 2012
Creator:
Sunney Xie, Wei Min, Chris Freudiger, Sijia Lu
Object Type:
Report
System:
The UNT Digital Library
Credit Rating Agencies: Alternative Compensation Models for Nationally Recognized Statistical Rating Organizations
A letter report issued by the Government Accountability Office with an abstract that begins "As of January 2012, GAO identified seven alternative models for compensating NRSROs (see table below). These models generally were designed to address the conflict of interest in the issuer-pays model, better align the NRSROs interest with users of ratings, or improve incentives NRSROs have to produce reliable and high-quality ratings. However, the amount of detail currently available for each model varies and none has been implemented. According to some of the authors of the models, there is little incentive to continue developing these models because it appears unlikely they will receive attention from regulators or legislators. For example, these authors noted that SEC had not reached out to them to further discuss these models as part of its ongoing study of alternative compensation models for credit rating agencies."
Date:
January 18, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Dodd-Frank Act: Hybrid Capital Instruments and Small Institution Access to Capital
A letter report issued by the Government Accountability Office with an abstract that begins "Tier 1 hybrid capital instruments, particularly trust preferred securities, have been heavily used by bank holding companies because of their financial advantages, but they are not as effective in absorbing losses as traditional forms of Tier 1 capital, such as common equity. As of December 31, 2010, almost two-thirds of all top-level bank holding companies that were subject to capital requirements included hybrid instruments in their Tier 1 capital, for a total value of $157 billion. Hybrid instruments such as trust preferred securities have offered institutions the benefit of lower-cost capital, largely because of their debt-related featuresincluding tax-deductible dividends. These instruments also are accessible to a broader range of potential investors. However, trust preferred securities do not absorb losses like other Tier 1 instruments because of their obligation to repay principal and dividends. Trust preferred securities may provide limited financial flexibility in times of stress, but they may also hinder efforts to recapitalize troubled banking institutions."
Date:
January 18, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Elementary and Secondary Education Act Reauthorization: Data Options for the English Language Acquisition State Grants Formula (Title III-A)
Congressional Research Service (CRS) report entailing information about data options for the English Language Acquisition State Grants Formula (Title III-A) in regards to the Elementary and Secondary Education Act. Topics include, additional LEP data considerations, census data, a description of allocations etc..
Date:
January 18, 2012
Creator:
Dortch, Cassandria
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, January 18, 2012
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 18, 2012
Creator:
DeSilver, Debi
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Faculty Recital: 2012-01-18 - Hammer Clavier Trio
Access:
Use of this item is restricted to the UNT Community
A faculty recital performed at the UNT College of Music Voertman Hall.
Date:
January 18, 2012
Creator:
Roberts, Cynthia; Whear, Allen & Hammer, Christoph
Object Type:
Sound
System:
The UNT Digital Library
Fukushima Nuclear Disaster
The huge earthquake and tsunami that struck Japan's Fukushima Daiichi nuclear power station on March 11, 2011, knocked out backup power systems that were needed to cool the reactors at the plant, causing three of them to undergo fuel melting, hydrogen explosions, and radioactive releases. Radioactive contamination from the Fukushima plant forced the evacuation of communities up to 25 miles away and affected up to 100,000 residents, although it did not cause any immediate deaths. Studies of the Fukushima disaster have identified design changes, response actions, and other safety improvements that could have reduced or eliminated the amount of radioactivity released from the plant. As a result, Fukushima has prompted a reexamination of nuclear plant safety requirements around the world, including in the United States.
Date:
January 18, 2012
Creator:
Holt, Mark; Campbell, Richard J. & Nikitin, Mary Beth
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Dallas, Tex.), Vol. 35, No. 288, Ed. 1 Wednesday, January 18, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
January 18, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 35, No. 289, Ed. 1 Wednesday, January 18, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
January 18, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 604, Ed. 1 Wednesday, January 18, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
January 18, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 605, Ed. 1 Wednesday, January 18, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
January 18, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 606, Ed. 1 Wednesday, January 18, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
January 18, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Health-Related Revenue Provisions in the Patient Protection and Affordable Care Act (ACA)
This report summarizes the health-related revenue provisions in ACA, their effective dates, and, where data are available, potential impacts of these provisions.
Date:
January 18, 2012
Creator:
Mulvey, Janemarie
Object Type:
Report
System:
The UNT Digital Library
Iron Phosphate Glass-Containing Hanford Waste Simulant
Resolution of the nation's high-level tank waste legacy requires the design, construction, and operation of large and technically complex one-of-a-kind processing waste treatment and vitrification facilities. While the ultimate limits for waste loading and melter efficiency have yet to be defined or realized, significant reductions in glass volumes for disposal and mission life may be possible with advancements in melter technologies and/or glass formulations. This test report describes the experimental results from a small-scale test using the research-scale melter (RSM) at Pacific Northwest National Laboratory (PNNL) to demonstrate the viability of iron-phosphate-based glass with a selected waste composition that is high in sulfate (4.37 wt% SO3). The primary objective of the test was to develop data to support a cost-benefit analysis related to the implementation of phosphate-based glasses for Hanford low-activity waste (LAW) and/or other high-level waste streams within the U.S. Department of Energy complex. The testing was performed by PNNL and supported by Idaho National Laboratory, Savannah River National Laboratory, Missouri University of Science and Technology, and Mo-Sci Corporation.
Date:
January 18, 2012
Creator:
Sevigny, Gary J.; Kimura, Marcia L.; Fischer, Christopher M.; Schweiger, M. J.; Rodriguez, Carmen P.; Kim, Dong-Sang et al.
Object Type:
Report
System:
The UNT Digital Library
Jackson County Herald-Tribune (Edna, Tex.), Vol. 105, No. 9, Ed. 1 Wednesday, January 18, 2012
Weekly newspaper from Edna, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2012
Creator:
Lundstrom, Chris
Object Type:
Newspaper
System:
The Portal to Texas History
Junior Recital: 2012-01-18 - Lawrence Vanderpool, cello
Access:
Use of this item is restricted to the UNT Community
A junior recital presented at the UNT College of Music Recital Hall.
Date:
January 18, 2012
Creator:
Vanderpool, Lawrence
Object Type:
Sound
System:
The UNT Digital Library
A Low-Frequency Model for E-Field and B-Field Coupling into a Folded Antenna with Two Gaps
None
Date:
January 18, 2012
Creator:
Perkins, M. P.; Ong, M. M. & Robbins, C. L.
Object Type:
Article
System:
The UNT Digital Library