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in creator/contributor: "Wang, J."

open access

Irreversibility behavior in Ag-sheathed Bi-based superconducting wires

Irreversibility lines for Ag/(Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y}(2223) wires prepared through a phase formation- decomposition-recovery (PFDR) process and normal annealing process were determined using both AC susceptibility measurements under DC fields and magnetisation measurements. It was found that flux pinning was enhanced in the PFDR processed samples over the normal processed samples, in particular at temperature above 77 K. The PFDR process results in high mass density, gr… more

Date: April 1, 1992

Creator: Dou, S.X.; Liu, H.K.; Guo, Y.C.; Wang, J.; Jin, X.J.; Hu, Q.Y. (New South Wales Univ., Kensington (Australia)) et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Weldon Spring historical dose estimate

This study was conducted to determine the estimated radiation doses that individuals in five nearby population groups and the general population in the surrounding area may have received as a consequence of activities at a uranium processing plant in Weldon Spring, Missouri. The study is retrospective and encompasses plant operations (1957-1966), cleanup (1967-1969), and maintenance (1969-1982). The dose estimates for members of the nearby population groups are as follows. Of the three periods … more

Date: July 1, 1986

Creator: Meshkov, N.; Benioff, P.; Wang, J. & Yuan, Y.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Study for a 6 GeV undulator based synchrotron radiation source

A partial study for a 6 GeV undulator based synchrotron radiation source for production of high brightness undulator radiation, in the A region, is presented. The basic lattice adopted for the storage ring is a hybrid FODO Chasman-Green lattice, making use of gradient in the dipoles. We discuss also the e beam current limits and the injection parameters.

Date: January 1, 1985

Creator: Vignola, G.; Barton, M.; Blumberg, R.; Galayda, J.; Krinsky, S.; Luccio, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Use of microphysical relationships to discern growth/decay mechanisms of cloud droplets with focus on Z-LWC relationships.

Cloud droplet size distributions hence the key microphysical quantities (e.g., radar reflectivity, droplet concentration, liquid water content, relative dispersion, and mean-volume radius) are determined by different physical mechanisms, including pre-cloud aerosols as CCNs, cloud updraft, and various turbulent entrainment-mixing processes. Therefore, different relationships among these microphysical properties are expected in response to these various mechanisms. The effect of turbulent entrai… more

Date: May 1, 2008

Creator: Liu, Y.; Daum, P. H.; Yum, S. S. & Wang, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Environmental impact of a teratogenic actinide: a case study of americium-241

Americium-241 is widely used as a radiation source, but it also has some potential risk if taken into the body. Although the radiotoxicity of americium-241 is small compared to other transuranic actinides, its effects on the reproductive system and on development of the placenta are more damaging than the effects of plutonium-239. A previous report based on a worst-case scenario involving a hypothetical fire accident in a contaminated facility indicated that there could have been a significant … more

Date: October 16, 1985

Creator: Wang, J. & Yang, J.Y.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Detection and location of multiple events by MARS. Final report. [Multiple Arrival Recognition System]

Seismic data from two explosions was processed using the Systems Science and Software MARS (Multiple Arrival Recognition System) seismic event detector in an effort to determine their relative spatial and temporal separation on the basis of seismic data alone. The explosions were less than 1.0 kilometer apart and were separated by less than 0.5 sec in origin times. The seismic data consisted of nine local accelerograms (r < 1.0 km) and four regional (240 through 400 km) seismograms. The MARS pr… more

Date: September 1, 1980

Creator: Wang, J.; Masso, J. F.; Archambeau, C. B. & Savino, J. M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Design and simulation of fast pulsed kicker/bumper units for the positron accumulator ring at APS

In the design of fast pulsed kicker/bumper units for a positron accumulator ring (PAR) at APS, different pulse forming networks (PFN) are considered and different structures for the magnet are studied and simulated. This paper describes some design considerations and computer simulation results of different designs. 4 refs., 6 figs.

Date: January 1, 1991

Creator: Wang, J. & Volk, G. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Radioactive releases from a thorium-contaminated site in Wayne, New Jersey

Various residues and wastes from the production o

Date: January 1, 1985

Creator: Wang, J.; Yang, J. & Merry-Libby, P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Environmental assessments for the existing radioactive materials in the Weldon Spring raffinate pits. [Various radioactive residues and wastes from processing of uranium and thorium between 1957 and 1966]

Various radioactive residues (raffinates) and wastes from the processing of uranium and thorium between 1957 and 1966 are stored in four pits at Weldon Spring, Missouri. The US Department of Energy (DOE) plans to stabilize all the contaminated materials on a long-term (more than 1000-year) basis. The effectiveness of stabilization measures are evaluated by estimating radioactive releases under two options: (1) no action, and (2) improved containment using the existing raffinate pits. Two major … more

Date: January 1, 1985

Creator: Yang, J.Y. & Wang, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Waveform Sampler CAMAC Module

A Waveform Sampler Module (WSM) for the measurement of signal shapes coming from the multi-hit drift chambers of the SLAC SLC detector is described. The module uses a high speed, high resolution analog storage device (AMU) developed in collaboration between SLAC and Stanford University. The AMU devices together with high speed TTL clocking circuitry are packaged in a hybrid which is also suitable for mounting on the detector. The module is in CAMAC format and provides eight signal channels, eac… more

Date: September 1, 1985

Creator: Freytag, D.R.; Haller, G.M.; Kang, H. & Wang, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Minimizing the energy spread within a single bunch by shaping its charge distribution

When electrons or positrons in a bunch pass through the periodic structure of a linear accelerator, they leave behind them energy in the form of longitudinal wake fields. The longitudinal fields left behind by early particles in a bunch decrease the energy of later particles. For a linear collider, the energy spread introduced within the bunches by this beam loading effect must be minimized because it limits the degree to which the particles can be focused to a small spot due to chromatic effec… more

Date: June 1, 1984

Creator: Loew, G.A. & Wang, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Sorbent Utilization Studies Using a Mini-Pilot Spray Dryer. Final Report, 1 September 1992--31 August 1993

The main body of the report consists of four parts: 1. additives to change process chemistry for SO{sub 2} absorption by Ca(OH){sub 2} slurry; 2. recycle tests and hydration of fly ash with Ca(OH){sub 2} to increase reactivity; 3. limestone as an alternative sorbent and additive effects; 4. physical and chemical model developments for some of the additive effects and spray dryer mathematical model application. As the concentration of SO{sub 2} in the flue gases increases, the SO{sub 2} removal … more

Date: September 30, 1993

Creator: Keener, T. C.; Khang, S. J.; Wang, J. & Sanders, J. F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Neutron and x-ray scattering studies of (FeF{sub 2}){sub m}(CoF{sub 2}){sub n} multilayers

We have performed elastic neutron scattering measurements of the staggered magnetization in (FeF{sub 2}){sub m}(CoF{sub 2}){sub n} superlattices. Thermal expansion measurements, which are proportional to the magnetic contribution to the specific heat, wwre also carried out using high resolution x-ray diffraction. One of the two measured samples has thickness of m = n = 4.5 and the other m = 26 and n = 28 monolayers, as determined from high angle x-ray {theta} - 2{theta} scans. In the m = n = 4.… more

Date: June 1, 1993

Creator: Lederman, D.; Belanger, D. P.; Wang, J.; Han, S. J.; Paduani, C. P.; Ramos, C. A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Newberry Seismic Deployment Fieldwork Report

This report summarizes the seismic deployment of Lawrence Livermore National Laboratory (LLNL) Geotech GS-13 short-period seismometers at the Newberry Enhanced Geothermal System (EGS) Demonstration site located in Central Oregon. This Department of Energy (DOE) demonstration project is managed by AltaRock Energy Inc. AltaRock Energy had previously deployed Geospace GS-11D geophones at the Newberry EGS Demonstration site, however the quality of the seismic data was somewhat low. The purpose of t… more

Date: March 21, 2012

Creator: Wang, J. & Templeton, D. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of wakefields generated in accelerator test structures using the SLC

Research is underway at SLAC to develop accelerator structures for the next generation linear collider. An important feature of the design is a detuning of the dipole modes of the cells to suppress the long-range transverse wakefield by two orders of magnitude. This paper describes a facility, called ASSET, that will be incorporated into the SLAC Linear Collider (SLC) to test the long-range wakefield suppression and also to measure the other components of the wakefields generated in accelerator… more

Date: October 1, 1992

Creator: Adolphsen, C.; Bane, K.; Loew, G.; Ruth, R.; Thompson, K. & Wang, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

FY 2010 Second Quarter Report Evaluation of the Liu-Daum-McGraw (LDM) Drizzle Threshold Parameterization using Measurements from the VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign

Metric for Quarter 2: Evaluate LDM (Liu, Daum, McGraw) drizzle threshold parameterization for a range of cloud conditions by comparing the threshold function computed using measurements of cloud droplet number concentration and cloud liquid water content to measurements of drizzle droplet number concentrations and/or drizzle water content.

Date: April 4, 2011

Creator: McGraw, R.; Kleinman, L. L.; Springston, S. R.; Daum, P. H.; Senum, G. & Wang, J.

Item Type: Text

Partner: UNT Libraries Government Documents Department

open access

SOURCE OF MICROBUNCHING AT BNL NSLS SOURCE DEVELOPMENT LABORATORY

We report experimental studies of the origins of electron beam microbunching instability at BNL Source Development Laboratory (SDL). We eliminated laser-induced microbunching by utilizing an ultra-short photocathode laser. The measurements of the resulting electron beam led us to conclude that, at SDL, microbunching arising from shot noise is not amplified to any significant level. Our results demonstrated that the only source of microbunching instability at SDL is the longitudinal modulation o… more

Date: March 28, 2011

Creator: Seletskiy, S.; Hidaka, Y.; Murphy, J.B.; Podobedov, B.; Qian, H.; Shen, Y. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

FY 2010 Fourth Quarter Report: Evaluation of the Dependency of Drizzle Formation on Aerosol Properties

Metric for Quarter 4: Report results of implementation of composite parameterization in single-column model (SCM) to explore the dependency of drizzle formation on aerosol properties. To better represent VOCALS conditions during a test flight, the Liu-Duam-McGraw (LDM) drizzle parameterization is implemented in the high-resolution Weather Research and Forecasting (WRF) model, as well as in the single-column Community Atmosphere Model (CAM), to explore this dependency.

Date: October 1, 2010

Creator: Lin, W.; McGraw, R.; Liu, Y.; Wang, J.; Vogelmann, A. & Daum, P. H.

Item Type: Text

Partner: UNT Libraries Government Documents Department

open access

The Role of Energy Storage in Commercial Building

Motivation and Background of Study This project was motivated by the need to understand the full value of energy storage (thermal and electric energy storage) in commercial buildings, the opportunity of benefits for building operations and the potential interactions between a building and a smart grid infrastructure. On-site or local energy storage systems are not new to the commercial building sector; they have been in place in US buildings for decades. Most building-scale storage technologies… more

Date: September 30, 2010

Creator: Kintner-Meyer, Michael CW; Subbarao, Krishnappa; Prakash Kumar, Nirupama; Bandyopadhyay, Gopal K.; Finley, C.; Koritarov, V. S. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Use of Wind Power Forecasting in Operational Decisions.

The rapid expansion of wind power gives rise to a number of challenges for power system operators and electricity market participants. The key operational challenge is to efficiently handle the uncertainty and variability of wind power when balancing supply and demand in ths system. In this report, we analyze how wind power forecasting can serve as an efficient tool toward this end. We discuss the current status of wind power forecasting in U.S. electricity markets and develop several methodolo… more

Date: November 29, 2011

Creator: Botterud, A.; Zhi, Z.; Wang, J.; Bessa, R.J.; Keko, H.; Mendes, J. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Ordered Nucleation Sites for the Growth of Zinc Oxide Nanofibers

Organic photovoltaics (OPVs) offer a promising route to low cost photovoltaic (PV) technology that can be inexpensively manufactured on a large scale for use in power generation and commercial products. Solar power conversion efficiencies of laboratory scale OPV devices have recently reached ~5%; however, projected efficiencies of at least 10% will be required for commercialization. An analogous approach that has arisen recently that can potentially increase efficiencies employs metal oxide sem… more

Date: January 1, 2006

Creator: Wang, J.; Ginley, D.S. & Shaheen, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Probe molecule studies: Active species in alcohol synthesis

The goal of this research is to develop a better understanding of the mechanisms of formation of alcohols and other oxygenates from syngas over supported catalysts. Probe molecules will be added in situ during the reaction to help delineate reaction pathways and identify reaction intermediate species. The key of our study is to investigate how the species generated by these probe molecules interact with surface species present during oxygenate formation. (A) Co (5%) /Cu/ZnO/Al{sub 2}O{sub 3} wa… more

Date: July 1, 1992

Creator: Blackmond, D. G.; Wender, I.; Oukaci, R. & Wang, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

FY 2010 Third Quarter Report Comparison of Aerosol and Cloud Condensation Nuclei (CCN) Relationship Parameterizations with Data Collected During the 2008 VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign

Metric for Quarter 3: Report comparisons of aerosol/CCN relationship parameterizations with data collected in the first quarter and best parameterization for VOCALS data set.

Date: June 1, 2010

Creator: Wang, J.; Daum, P. H.; Kleinman, L. L.; Lee, Y. N.; McGraw, R.; Sedlacek, A. J. et al.

Item Type: Text

Partner: UNT Libraries Government Documents Department

open access

Probe molecule studies: Active species in alcohol synthesis. Ninth quarterly report, October 1992--December 1992

The goal of this research is to develop a better understanding of the mechanisms of formation of alcohols and other oxygenates from syngas over supported catalysts. Probe molecules are added in situ during the reaction to help delineate reaction pathways and identify reaction intermediate species. The key of our study is to investigate how the species generated by these probe molecules interact with surface species present during oxygenate formation. The catalysts chosen for tills investigation… more

Date: December 1, 1992

Creator: Blackmond, D. G.; Wender, I.; Oukaci, R. & Wang, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department