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An Innovative Method for Dynamic Characterization of Fan FilterUnit Operation.
Fan filter units (FFU) are widely used to deliver re-circulated air while providing filtration control of particle concentration in controlled environments such as cleanrooms, minienvironments, and operating rooms in hospitals. The objective of this paper is to document an innovative method for characterizing operation and control of an individual fan filter unit within its operable conditions. Built upon the draft laboratory method previously published [1] , this paper presents an updated method including a testing procedure to characterize dynamic operation of fan filter units, i.e., steady-state operation conditions determined by varied control schemes, airflow rates, and pressure differential across the units. The parameters for dynamic characterization include total electric power demand, total pressure efficiency, airflow rate, pressure differential across fan filter units, and airflow uniformity.
Date:
December 21, 2006
Creator:
Xu, Tengfang
Object Type:
Article
System:
The UNT Digital Library
Double Photoionization of Aligned Molecular Hydrogen
We present converged, completely ab initio calculations ofthe triple differential cross sections for double photoionization ofaligned H2 molecules for a photon energy of 75.0 eV. The method ofexterior complex scaling, implemented with both the discrete variablerepresentation and B-splines, is used to solve the Schroedinger equationfor a correlated continuum wave function corresponding to a single photonhaving been absorbed by a correlated initial state. Results for a fixedinternuclear distance are compared with recent experiments and show thatintegration over experimental angular and energy resolutions is necessaryto produce good qualitative agreement, but does not eliminate somediscrepancies. Limitations of current experimental resolution are shownto sometimes obscure interesting details of the crosssection.
Date:
July 21, 2006
Creator:
Vanroose, Wim; Horner, Daniel A.; Martin, Fernando; Rescigno,Thomas N. & McCurdy, C. William
Object Type:
Article
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 286, Ed. 1 Friday, July 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
July 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 494, Ed. 1 Tuesday, November 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
November 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 548, Ed. 1 Thursday, December 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 392, Ed. 1 Thursday, September 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
September 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 74, Ed. 1 Tuesday, March 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
March 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 549, Ed. 1 Thursday, December 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 393, Ed. 1 Thursday, September 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
September 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 130, Ed. 1 Friday, April 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
April 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 26, Ed. 1 Tuesday, February 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
February 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 132, Ed. 1 Friday, April 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
April 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 288, Ed. 1 Friday, July 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
July 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 234, Ed. 1 Wednesday, June 21, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
June 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 157, No. 18, Ed. 1 Wednesday, June 21, 2006
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
June 21, 2006
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
DAR honors Ernestine Thompson
Announcement for the reception when the Daughters of the American Revolution (D.A.R.) honored Ernestine Thompson with the Community Service Award at the W.H. Passon Historical Society on May 21, 2006. Ernestine collected artifacts for the Jacob Fontaine Religious Museum.
Date:
May 21, 2006
Creator:
unknown
Object Type:
Text
System:
The Portal to Texas History
Ernestine Thompson receiving community service award from D.A.R.
The Daughters of the American Revolution (D.A.R.)representative, Nancy Tanner, honors Ernestine Thompson with the Community Service Award at the W.H. Passon Historical Society on May 21, 2006. Ernestine collected artifacts for the Jacob Fontaine Religious Museum.
Date:
May 21, 2006
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 90, No. 75, Ed. 1 Tuesday, February 21, 2006
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
February 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 90, No. 87, Ed. 1 Tuesday, March 21, 2006
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
March 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Scene: North Texas Daily (Denton, Tex.), Vol. 90, No. 106, Ed. 1 Friday, April 21, 2006
Weekly magazine edition of the daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
April 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 91, No. 15, Ed. 1 Thursday, September 21, 2006
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
September 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 91, No. 48, Ed. 1 Tuesday, November 21, 2006
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
November 21, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Fort Worth, Tex.), Vol. 60, No. 51, Ed. 1 Thursday, December 21, 2006
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state and national news along with extensive advertising.
Date:
December 21, 2006
Creator:
Wisch, Rene
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Attorney General Opinion: GA-0401
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification; Whether the commission on State Emergency Communication or the Comptroller of Public Accounts has primary jurisdiction to determine in the context of a claim for the refund Whether the 9-1-1 emergency service fee imposed on wireless telecommunication connections by Texas Health and Safety Code Section 771.0711(a) is applicable to a service provider's specific service (RQ-0370-GA).
Date:
February 21, 2006
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History