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Preliminary design of a cryogenic thermoelectric generator.

Preliminary design of a cryogenic thermoelectric generator.

Date: May 2007
Creator: Sivapurapu, Sai Vinay Kumar
Description: A cryogenic thermoelectric generator is proposed to increase the efficiency of a vehicle propulsion system that uses liquid nitrogen as its fuel. The proposed design captures some of the heat required for vaporizing or initial heating of the liquid nitrogen to produce electricity. The thermoelectric generator uses pressurized liquid nitrogen as its cold reservoir and ambient air as the high-temperature reservoir to generate power. This study concentrated on the selection of thermoelectric materials whose properties would result in the highest efficiency over the operating temperature range and on estimating the initial size of the generator. The preliminary selection of materials is based upon their figure of merit at the operating temperatures. The results of this preliminary design investigation of the cryogenic thermoelectric generator indicate that sufficient additional energy can be used to increase overall efficiency of the thermodynamic cycle of a vehicle propulsion system.
Contributing Partner: UNT Libraries
Feminist Design Methodology: Considering the Case of Maria Kipp

Feminist Design Methodology: Considering the Case of Maria Kipp

Date: December 2003
Creator: Lawrence, Anne
Description: This thesis uses the work and career of the textile designer Maria Kipp to stage a prolegomena concerning how to write about a female designer active during the middle of the twentieth century. How can design historians incorporate new methodologies in the writing of design history? This thesis explores the current literature of feminist design history for solutions to the potential problems of the traditional biography and applies these to the work and career of Kipp. It generates questions concerning the application of methodologies, specifically looking at a biographical methodology and new methodologies proposed by feminist design historians. Feminist writers encourage scholarship on unknown designers, while also they call for a different kind of writing and methodology. The goal of this thesis is to examine how these new histories are written and in what ways they might inspire the writing of Kipp into design history.
Contributing Partner: UNT Libraries
Ohio Coal Testing and Development Facility - Construction and operation. Final report

Ohio Coal Testing and Development Facility - Construction and operation. Final report

Date: March 1, 1996
Creator: Ferris, D.D.
Description: On June 14, 1987, the Ohio Coal Development Office (OCDO) executed a grant agreement with ICF Kaiser Engineers (ICF Kaiser) for the planning and design (Phase I) of a Demonstration Advanced Technology Coal Preparation Facility. Subsequently, on December 1, 1990, OCDO executed a grant agreement with the American Electric Power Service Corporation (AEPSC) through its subsidiary, the Ohio Power Company, for the final design and construction (Phase II), testing and operation (Phase III), and marketing and future operation (Phase IV) of the facility. These phases were subcontracted to ICF Kaiser. AEPSC co-sponsored the project and donated a site at the Central Ohio Coal Company`s Unionville Coal Preparation Plant for locating the test plant. Central Ohio Coal supplied coal handling services, waste-product disposal, and water. The Ohio Power Company provided project oversight, electric power, and the test coals. The test results from the operation of the 30 tph advanced coal cleaning plant demonstrated that combining conventional physical coal cleaning with emerging advanced physical coal cleaning technologies was a cost-effective method to reduce sulfur emissions of Ohio coals. The following is a summary of the key findings of this project.
Contributing Partner: UNT Libraries Government Documents Department
The ISAC Project at TRIUMF

The ISAC Project at TRIUMF

Date: September 1, 1995
Creator: Schneider, H.R.
Description: Development of a facility combining an isotope-separator-on-line (ISOL) with a post-accelerator, to produce energetic ion beams far from the valley of nuclear stability, was originally proposed for installation on one of the beam lines of the TRIUMF cyclotron about ten years ago. A test facility (TISOL) consisting of a target, ion source, and mass separator, but without a post accelerator, was subsequently installed and has been in use to support an experimental program and to aid in development of target/ion source systems. The facility is currently being augmented with the addition of a laser neutral atom trap for a proposed series of {beta} decay and atomic parity non-conservation experiments, using selected radioactive alkali isotopes, to test some symmetry properties of the Standard Model. In addition, work has begun on a new upgraded facility consisting of remotely handleable target/ion source assemblies, a new mass separator with resolution m/{Delta}m = 10,000, and post-acceleration to 1.5 MeV/u, for ions with A {le} 30.
Contributing Partner: UNT Libraries Government Documents Department
Design for a FET based 1 MHz, 10 kV pulse generator

Design for a FET based 1 MHz, 10 kV pulse generator

Date: August 1, 1995
Creator: Barnes, M.J. & Wait, G.D.
Description: A pulse generator consisting of a coaxial cable and a high voltage modulator, incorporating two stacks of Field-Effect Transistor (FET) switches operating in ``push-pull`` mode, has been designed and built. The modulator generates a continuous, unipolar, pulse train at a fundamental frequency of 1 MHz and a magnitude of 10 kV. The rise and fall times of the pulses are less than 39 ns. The two stacks each utilize 14 FETS, which are individually rated at 1 kV. The design incorporates a low-loss coaxial cable on which pulses are stored. Extensive PSpice simulations have been carried out to evaluate various design options. Subsequent measurements on the prototype pulse generator confirm the PSpice predictions. This system is applicable for the kicker system at TRIUMF.
Contributing Partner: UNT Libraries Government Documents Department
Beam instrumentation for an ISOL test stand

Beam instrumentation for an ISOL test stand

Date: September 1, 1995
Creator: Mackenzie, G.H.; Dombsky, M.; Rawnsley, W.; Stanford, G.; Yin, Y. & Novikov, A.
Description: TRIUMF is constructing a test bed for the first stages of the proposed TISAC accelerated radioactive beam facility. The authors will present the requirements for the diagnostic system for this test stand and describe the design and development work underway. Scintillators, beamstops and a Faraday Cup have been tested using stable, mass analyzed, 12 keV beams of ions from mass 14 to 132. The design of a linear drive, with 10 {micro}m resolution, for scanning wires and slits has begun.
Contributing Partner: UNT Libraries Government Documents Department
Gas microstrip detectors based on flexible printed circuit

Gas microstrip detectors based on flexible printed circuit

Date: September 1, 1995
Creator: Salomon, M.; Crowe, K.; Faszer, W.; Lindsay, P. & Curran Maier, J.M.
Description: Microstrip Gas Detectors (MSGC`s) were introduced some years ago as position sensitive detectors capable of operating at very high rates. The authors have studied the properties of a new type of Gas Microstrip Counter built using flexible printed circuit technology. They describe the manufacturing procedures, the assembly of the device, as well as its operation under a variety of conditions, gases and types of radiation. They also describe two new passivation materials, tantalum and niobium, which produce effective surfaces.
Contributing Partner: UNT Libraries Government Documents Department
Electric vehicles: Likely consequences of US and other nations` programs and policies

Electric vehicles: Likely consequences of US and other nations` programs and policies

Date: December 30, 1994
Creator: Chan, Kwai-Cheung
Description: This report examines international electric vehicle development and commercialization programs. The study encompassed a review of current barriers to widespread electric vehicle implementation, field visits in seven nations and the United States to examine electric vehicle programs and policies, and analyses of electric vehicle effects on economics, energy, and the environment.
Contributing Partner: UNT Libraries Government Documents Department
Design of the injection kicker magnet system for CERN`s 14 TeV proton collider LHC

Design of the injection kicker magnet system for CERN`s 14 TeV proton collider LHC

Date: August 1, 1995
Creator: Ducimetiere, L.; Jansson, U.; Schroeder, G.H.; Vossenberg, E.B.; Barnes, M.J. & Wait, G.D.
Description: Two counter-rotating proton beams will be injected into the LHC at an energy of 450 GeV by two kicker magnet systems, producing magnetic field pulses of approximately 750 ns rise time and 6.6 {micro}s flat top duration. To avoid dilution of the beam emittance during injection, a stringent design requirement of the system is a flat top ripple of the magnetic field of less than {+-}0.5%. Both injection systems are composed of 4 travelling wave kicker magnets of 2.17 m length each, powered by pulse forming networks (PFN`s) and matched to their characteristic impedance. To achieve the high required kick strength of 1.2 Tm, for a compact and cost efficient design, a comparably low characteristic impedance of 5 {Omega} has been chosen. The electrical circuit of the system is being designed with the help of PSpice computer modeling. Most known parasitic elements are included in the model to obtain a realistic pulse response prediction. The present paper reports on design and modeling results of the LHC injection kicker magnet system that has several novel and demanding design requirements.
Contributing Partner: UNT Libraries Government Documents Department
Theoretical Analysis of the Sensitivity and Speed Improvement of ISIS over a Comparable Traditional Hyperspectral Imager

Theoretical Analysis of the Sensitivity and Speed Improvement of ISIS over a Comparable Traditional Hyperspectral Imager

Date: September 1, 1998
Creator: Stallard, Brian R. & Gentry, Stephen M.
Description: The analysis presented herein predicts that, under signal-independent noise limited conditions, an Information-efficient Spectral Imaging Sensor (ISIS) style hyperspectral imaging system design can obtain significant signal-to-noise ratio (SNR) and speed increase relative to a comparable traditional hyperspectral imaging (HSI) instrument. Factors of forty are reasonable for a single vector, and factors of eight are reasonable for a five-vector measurement. These advantages can be traded with other system parameters in an overall sensor system design to allow a variety of applications to be done that otherwise would be impossible within the constraints of the traditional HSI style design.
Contributing Partner: UNT Libraries Government Documents Department
Thermal sludge dryer demonstration: Bird Island Wastewater Treatment Plant, Buffalo, NY. Final report

Thermal sludge dryer demonstration: Bird Island Wastewater Treatment Plant, Buffalo, NY. Final report

Date: January 1, 1995
Creator: unknown
Description: The Buffalo Sewer Authority (BSA), in cooperation with the New York State Energy Research and Development Authority (Energy Authority), commissioned a demonstration of a full scale indirect disk-type sludge dryer at the Bird Island Wastewater Treatment Plant (BIWWTP). The purpose of the project was to determine the effects of the sludge dryer on the sludge incineration process at the facility. Sludge incineration is traditionally the most expensive, energy-intensive unit process involving solids handling at wastewater treatment plants; costs for incineration at the BIWWTP have averaged $2.4 million per year. In the conventional method of processing solids, a series of volume reduction measures, which usually includes thickening, digestion, and mechanical dewatering, is employed prior to incineration. Usually, a high level of moisture is still present within sewage sludge following mechanical dewatering. The sludge dryer system thermally dewaters wastewater sludge to approximately 26%, (and as high as 38%) dry solids content prior to incineration. The thermal dewatering system at the BIWWTP has demonstrated that it meets its design requirements. It has the potential to provide significant energy and other cost savings by allowing the BSA to change from an operation employing two incinerators to a single incinerator mode. While the long-term reliability ...
Contributing Partner: UNT Libraries Government Documents Department
Low Cost Geothermal Separators BLISS Boundary Layer Inline Separator Scrubber

Low Cost Geothermal Separators BLISS Boundary Layer Inline Separator Scrubber

Date: May 26, 2000
Creator: Jung, Douglas & Wai, King
Description: A new compact, low cost, and high performance separator is being developed to help reduce the installed and O and M cost of geothermal power generation. This device has been given the acronym ''BLISS'' that stands for ''Boundary Layer Inline Separator Scrubber''. The device is the first of a series of separators, and in the case of injectates, scrubbers to address the cost-reduction needs of the industry. The BLISS is a multi-positional centrifugal separator primarily designed to be simply installed between pipe supports, in a horizontal position. This lower profile reduces the height safety concern for workers, and significantly reduces the total installation cost. The vessel can demand as little as one-quarter (25%) the amount of steel traditionally required to fabricate many large vertical separators. The compact nature and high separating efficiency of this device are directly attributable to a high centrifugal force coupled with boundary layer control. The pseudo isokinetic flow design imparts a self-cleaning and scale resistant feature. This polishing separator is designed to remove moderate amounts of liquid and entrained solids.
Contributing Partner: UNT Libraries Government Documents Department
Carbogenic molecular sieves for reaction and separation by design: A novel approach to shape selective super base, super acid and catalytic membranes. Final report

Carbogenic molecular sieves for reaction and separation by design: A novel approach to shape selective super base, super acid and catalytic membranes. Final report

Date: March 18, 2002
Creator: Foley, Henry C.
Description: This report details the findings of three years of research plus one year of a no-cost extension. Primary results are the work with supported nanoporous carbon membranes for separation and reaction as well as with cesium-nanoporous carbon catalysts. The work resulted in 17 plus 2 papers (2 are in progress) and partial or full support for five Ph.D. students. Two patents were filed based on this research.
Contributing Partner: UNT Libraries Government Documents Department
Improvement of Pulping Uniformity by Measurement of Single Fiber Kappa Number

Improvement of Pulping Uniformity by Measurement of Single Fiber Kappa Number

Date: November 20, 2001
Creator: Gustafson, Richard R. & Callis, James B.
Description: A method to measure the kappa of single fibers by staining with a fluorescent dye, Acridine Orange (AO), has been developed. This method is now applied to develop and automated flow-through instrument that permits routine kappa analysis on thousands of images of AO stained fibers to give the fiber kappa number distribution of a pulp sample in a few minutes. The design and operation of the instrument are similar to that of a flow cytometer but with the addition of extensive fiber imaging capability. Fluorescence measurements in the flow-through instrument are found to be consistent with those made with fluorescence microscope provided the signal processing in the flow-thou instrument is handled propertly. The kappa distributions of pulps that were analyzed by means of a density gradient column are compared to those measured with the flow-through instrument with good results. The kappa distributions of various laboratory pulps and commercial pulps have been measured. It has been found that all pulps are non-uniform but that ommercial pulps generally have broader kappa distributions thatn their laboratory counterparts. The effects of different pulping methods and chip pretreatments on pulp uniformity are discussed in the report. Finally, the application of flow-through fluorescence technology to other ...
Contributing Partner: UNT Libraries Government Documents Department
Case Studies of integrated hydrogen systems. International Energy Agency Hydrogen Implementing Agreement, Final report for Subtask A of task 11 - Integrated Systems

Case Studies of integrated hydrogen systems. International Energy Agency Hydrogen Implementing Agreement, Final report for Subtask A of task 11 - Integrated Systems

Date: December 31, 1999
Creator: Schucan, T.
Description: Within the framework of the International Energy Agency Hydrogen Implementing Agreement, Task 11 was undertaken to develop tools to assist in the design and evaluation of existing and potential hydrogen demonstration projects. Emphasis was placed on integrated systems, from input energy to hydrogen end use. Included in the PDF document are the Executive Summary of the final report and the various case studies. The activities of task 11 were focused on near- and mid-term applications, with consideration for the transition from fossil-based systems to sustainable hydrogen energy systems. The participating countries were Canada, Italy, Japan, the Netherlands, Spain, Switzerland and the United States. In order for hydrogen to become a competitive energy carrier, experience and operating data need to be generated and collected through demonstration projects. A framework of scientific principles, technical expertise, and analytical evaluation and assessment needed to be developed to aid in the design and optimization of hydrogen demonstration projects to promote implementation. The task participants undertook research within the framework of three highly coordinated subtasks that focused on the collection and critical evaluation of data from existing demonstration projects around the world, the development and testing of computer models of hydrogen components and integrated systems, and ...
Contributing Partner: UNT Libraries Government Documents Department
Environmental Assessment Expanded Ponnequin Wind Energy Project Weld County, Colorado

Environmental Assessment Expanded Ponnequin Wind Energy Project Weld County, Colorado

Date: March 2, 1999
Creator: /A, N
Description: The U.S.Department of Energy (DOE) has considered a proposal from the State of Colorado, Office of Energy Conservation (OEC), for funding construction of the Expanded Ponnequin Wind Project in Weld County, Colorado. OEC plans to enter into a contracting arrangement with Public Service Company of Colorado (PSCO) for the completion of these activities. PSCo, along with its subcontractors and business partners, are jointly developing the Expanded Ponnequin Wind Project. DOE completed an environmental assessment of the original proposed project in August 1997. Since then, the geographic scope and the design of the project changed, necessitating additional review of the project under the National Environmental Policy Act. The project now calls for the possible construction of up to 48 wind turbines on State and private lands. PSCo and its partners have initiated construction of the project on private land in Weld County, Colorado. A substation, access road and some wind turbines have been installed. However, to date, DOE has not provided any funding for these activities. DOE, through its Commercialization Ventures Program, has solicited applications for financial assistance from state energy offices, in a teaming arrangement with private-sector organizations, for projects that will accelerate the commercialization of emerging renewable energy technologies. ...
Contributing Partner: UNT Libraries Government Documents Department
Robotics and remote handling concepts for disposal of high-level nuclear waste

Robotics and remote handling concepts for disposal of high-level nuclear waste

Date: April 27, 1997
Creator: McAffee, Douglas; Raczka, Norman & Schwartztrauber, Keith
Description: This paper summarizes preliminary remote handling and robotic concepts being developed as part of the US Department of Energy's (DOE) Yucca Mountain Project. The DOE is currently evaluating the Yucca Mountain Nevada site for suitability as a possible underground geologic repository for the disposal of high level nuclear waste. The current advanced conceptual design calls for the disposal of more than 12,000 high level nuclear waste packages within a 225 km underground network of tunnels and emplacement drifts. Many of the waste packages may weigh as much as 66 tonnes and measure 1.8 m in diameter and 5.6 m long. The waste packages will emit significant levels of radiation and heat. Therefore, remote handling is a cornerstone of the repository design and operating concepts. This paper discusses potential applications areas for robotics and remote handling technologies within the subsurface repository. It also summarizes the findings of a preliminary technology survey which reviewed available robotic and remote handling technologies developed within the nuclear, mining, rail and industrial robotics and automation industries, and at national laboratories, universities, and related research institutions and government agencies.
Contributing Partner: UNT Libraries Government Documents Department
Site characterization plan: Yucca Mountain site, Nevada research and development area, Nevada: Consultation draft, Nuclear Waste Policy Act

Site characterization plan: Yucca Mountain site, Nevada research and development area, Nevada: Consultation draft, Nuclear Waste Policy Act

Date: January 1, 1988
Creator: unknown
Description: Chapter six describes the basis for facility design, the completed facility conceptual design, the completed analytical work relating to the resolution of design issues, and future design-related work. The basis for design and the conceptual design information presented in this chapter meet the requirements of the Nuclear Waste Policy Act of 1982, for a conceptual repository design that takes into account site-specific requirements. This information is presented to permit a critical evaluation of planned site characterization activities. Chapter seven describes waste package components, emplacement environment, design, and status of research and development that support the Nevada Nuclear Waste Storage Investigation (NNWSI) Project. The site characterization plan (SCP) discussion of waste package components is contained entirely within this chapter. The discussion of emplacement environment in this chapter is limited to considerations of the environment that influence, or which may influence, if perturbed, the waste packages and their performance (particularly hydrogeology, geochemistry, and borehole stability). The basis for conceptual waste package design as well as a description of the design is included in this chapter. The complete design will be reported in the advanced conceptual design (ACD) report and is not duplicated in the SCP. 367 refs., 173 figs., 68 tabs.
Contributing Partner: UNT Libraries Government Documents Department
Preliminary paper - Development of the Reference Design Description for a geologic repository

Preliminary paper - Development of the Reference Design Description for a geologic repository

Date: November 20, 1997
Creator: Daniel, Russell B. & Rindskopf, M. Sam
Description: This report describes the current Reference Design Description (RDD) design expectations for a potential geologic repository that could be located at Yucca Mountain in Nevada.
Contributing Partner: UNT Libraries Government Documents Department
Preliminary paper - Integrated control process for the development of the mined geologic disposal system

Preliminary paper - Integrated control process for the development of the mined geologic disposal system

Date: November 26, 1997
Creator: Daniel, Russell B.; Harbert, Kevin R. & Calloway, David E.
Description: The US Department of Energy (DOE) Order 430.1, Life Cycle Asset Management, begins to focus DOE Programs and Projects on the total system life cycle instead of looking at project execution or operation as individual components. As DOE begins to implement this order, the DOE Management and Operating contractors must develop a process to control not only the contract baseline but also the overall life cycle baseline. This paper presents an integrated process that is currently being developed on the Yucca Mountain Project for DOE. The process integrates the current contract/project baseline management process with the management control process for design and the configuration management change control process.
Contributing Partner: UNT Libraries Government Documents Department
IEA Agreement on the production and utilization of hydrogen: 1999 annual report

IEA Agreement on the production and utilization of hydrogen: 1999 annual report

Date: January 31, 2000
Creator: Elam, Carolyn C. (National Renewable Energy Lab, Golden, CO (US)) (ed.)
Description: The annual report begins with an overview of the IEA Hydrogen Agreement, including guiding principles and their strategic plan followed by the Chairman's report providing the year's highlights. Annex reports included are: the final report for Task 11, Integrated Systems; task updates for Task 12, Metal Hydrides and Carbon for Hydrogen Storage, Task 13, Design and Optimization of Integrated Systems, Task 14, Photoelectrolytic Production of Hydrogen, and Task 15, Photobiological Production of Hydrogen; and a feature article by Karsten Wurr titled 'Large-Scale Industrial Uses of Hydrogen: Final Development Report'.
Contributing Partner: UNT Libraries Government Documents Department
Field demonstration of the ICE 250{trademark} Cleaning System

Field demonstration of the ICE 250{trademark} Cleaning System

Date: October 5, 1999
Creator: Johnston, J.L. & Jackson, L.M.
Description: The ICE 250{trademark} Cleaning System was engineered to convert water into small ice particles for use in cleaning and decontamination applications. Ice crystals are produced in a special icemaker and pressured through a hose-nozzle onto the surface to be cleaned. The Rocky Mountain Oilfield Testing Center and Ice Cleaning Systems, Inc., conducted a test of this system at Naval Petroleum Reserve No. 3 to evaluate the system's cleaning capabilities in an oil field environment. Equipment cleaned included an oil storage tank, a rod pumping unit, a road grader, and a wellhead. Contaminants were unrefined sour crude oil, hydraulic fluid, paraffin, and dirt, occurring separately and as mixtures. In all four demonstration cleaning tasks, the ICE 250 System effectively removed surface contaminant mixtures in a timely manner and left no oily residue. A minimal amount of waste moisture was generated, thereby reducing cleanup and disposal costs.
Contributing Partner: UNT Libraries Government Documents Department
Atmospheric fluidized bed combustion for small scale market sectors. Final report

Atmospheric fluidized bed combustion for small scale market sectors. Final report

Date: March 31, 1997
Creator: Ashworth, R.A.; Plessinger, D.A.; Sommer, T.M.; Keener, H.M. & Webner, R.L.
Description: The objective of this project was to demonstrate and promote the commercialization of coal-fired atmospheric fluidized bed combustion (AFBC) systems, with limestone addition for SO{sub 2} emissions control and a baghouse for particulate emissions control. This AFBC system was targeted for small scale industrial-commercial-institutional space and process heat applications. A cost effective and environmentally acceptable AFBC technology in this size range would displace a considerable amount of gas/oil with coal while resulting in significant total cost savings to the owner/operators. In the Proof-of-Concept Phase, a 2.2 x 10{sup 6} Btu/hr unit was installed and successfully operated at Cedar Lane Farms (CLF), a commercial nursery in Ohio. The heat from the fluidized bed was used to heat hot water which was recirculated through greenhouses for cool weather heating. The system was designed to be fully automated with minimal operator attention required. The AFBC system installed at CLF was an improved design that incorporated flyash/sorbent reinjection and an underbed feed system to improve limestone utilization. With these additions it was possible to lower the Ca/S ratio from {approximately} 3.0 to 2.0, and still maintain an SO{sub 2} emissions level of 1.2 lb/10{sup 6} Btu when burning the same high sulfur Ohio coal ...
Contributing Partner: UNT Libraries Government Documents Department
Recent progress in tubular solid oxide fuel cell technology

Recent progress in tubular solid oxide fuel cell technology

Date: December 31, 1997
Creator: Singhal, S.C.
Description: The tubular design of solid oxide fuel cells (SOFCs) and the materials used therein have been validated by successful, continuous electrical testing over 69,000 h of early technology cells built on a calcia-stabilized zirconia porous support tube (PST). In the latest technology cells, the PST has been eliminated and replaced by a doped lanthanum manganite air electrode tube. These air electrode supported (AES) cells have shown a power density increase of about 33% with a significantly improved performance stability over the previously used PST type cells. These cells have also demonstrated the ability to thermally cycle over 100 times without any mechanical damage or performance loss. In addition, recent changes in processes used to fabricate these cells have resulted in significant cost reduction. This paper reviews the fabrication and performance of the state-of-the-art AES tubular cells. It also describes the materials and processing studies that are underway to further reduce the cell cost, and summarizes the recently built power generation systems that employed state-of-the-art AES cells.
Contributing Partner: UNT Libraries Government Documents Department
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