 View of Nuclear Engineering Building from the lab at the Dept. of Chemistry. Purdue University, West Lafayette IN, January 6, 1999.
 S.-w. side of Purdue Mall, view from Electrical Engineering Building. Purdue University, West Lafayette, Indiana, October 29, 1999.
 Purdue Mall, the fountain, and Hall of Administration, view from Electrical Engineering Building. Purdue University, West Lafayette, Indiana, October 29, 1999.
 Purdue University Mall and Electrical Engineering Building. West Lafayette, Indiana, September 26, 1999.
 View of Purdue University Mall from the second floor of Electrical Engineering Building. West Lafayette, Indiana, September 21, 1999.
 A grey squirrel gnawing a nut on its home range near Mechanical Engineering Building. Purdue University, West Lafayette, Indiana, October 1, 1999.
 Brown Laboratories of Chemistry at Purdue University, West Lafayette IN, 21 June, 1999.
 Fountain near John Purdue grave, Purdue University, West Lafayette IN, January 3, 1999.
 International students of Purdue University walking over rapids and tubs of a creek in Potholes Park (Fall Creek Gorge) near Pine Village. Indiana, June 5, 1999.
 Purdue University Mall. West Lafayette IN, January 3, 1999.
 Purdue Mall and Administration Hall at Purdue University, West Lafayette IN, 20 June, 1999.
 Fountain of Purdue Mall and Bell Tower at Purdue University, West Lafayette IN, 20 June, 1999.
 - Purdue University 1/3/99 (West Lafayette, November 26, 1998 - January 3, 1999)
 Purdue University, Administration Hall. West Lafayette IN, January 3, 1999.
 - Purdue University 1/3/99 (West Lafayette, November 26, 1998 - January 3, 1999)
 - Purdue University 1/3/99 (West Lafayette, November 26, 1998 - January 3, 1999)
 - Purdue University 1/3/99 (West Lafayette, November 26, 1998 - January 3, 1999)
 - Purdue University 1/3/99 (West Lafayette, November 26, 1998 - January 3, 1999)
 Wetherill Laboratory of Chemistry at Purdue University. West Lafayette IN, January 3, 1999.
 Frozen ornamental cabbage at Centennial Mall. Purdue University, West Lafayette IN, January 6, 1999.
 Jack Yang, Stephen Belair and Pablo Nigra in the lab of the Department of Chemistry (a little white fan later 5/31/99 caused a fire). Purdue University, West Lafayette IN, January 6, 1999.
 Canoe trip on Tippecanoe River with international students of Purdue University. Indiana, September 18, 1999.
 Founders Park at Purdue University, West Lafayette IN, 20 June, 1999.
 Purdue University Mall. West Lafayette, Indiana, October 10, 1999.
 Wetherill Laboratory of Chemistry at Purdue University, West Lafayette IN, 20 June, 1999.
 Founders Park in Purdue University. West Lafayette, Indiana, September 21, 1999.
 Fountain of Purdue University Mall. West Lafayette, Indiana, September 21, 1999.
 Purdue University Mall during afternoon hours. West Lafayette, Indiana, September 21, 1999.
 Remains of a fan (?) and books after a fire in the theoretical chemistry lab of Purdue University at Memorial Day. West Lafayette, Indiana, June 1, 1999.
 Burned part of the theoretical chemistry lab (there was a bookshelf) after a fire at Memorial Day. Purdue University, West Lafayette, Indiana, June 1, 1999.
 A burned desk in the theoretical chemistry lab (there was a coffee pot?) after a fire at Memorial Day. Purdue University, West Lafayette, Indiana, June 1, 1999.
 Inspecting a creek in Potholes Park (Fall Creek Gorge) by international students of Purdue University. Near Pine Village, Indiana, June 5, 1999.
 A lecture of Sabre Kais Phase transitions and critical phenomena for electronic structure of atoms and molecules (?) at internal meeting of the quantum chemistry group of Purdue University. West Lafayette, Indiana, September 21, 1999.
 Pablo Nigra, Qicun Shi, Stephen Belair, Imad Ladadwa and Ricardo A. Sauerwein ready to listen a lecture of S. Kais at internal meeting of the quantum chemistry group of Purdue University. West Lafayette, Indiana, September 21, 1999.
 Al Qassar Tower and Al Huda Engineering Works in West Bay. Doha, Qatar, January 31, 2012
 Al Huda Engineering Works and Taawun towers in West Bay. Doha, Qatar, January 31, 2012
 Ezdan Hotel, Al Huda Engineering Works and Taawun towers in West Bay. Doha, Qatar, January 31, 2012
 Al-Qassar and Al Huda Engineering Works Co. towers at Majlis Al Taawon Street in West Bay. Doha, Qatar, January 6, 2015
 Atrium of Jackie Brown Chemical Engineering Building on campus of Texas A and M University. College Station, Texas, January 18, 2008
 Qicun Shi explains to Sabre Kais correlation effects in scattering of an electron on lithium-like atom with a variable nuclear charge slightly above two after a lecture of Imad Ladadwa about ionization cross sections at internal meeting of the quantum chemistry group. Purdue University, West Lafayette, Indiana, October 1, 1999.
 Potholes Park, Fall Creek Gorge. The trip was organized by Purdue University International Center. Near Pine Village, Indiana, June 5, 1999.
 - Purdue University (Dallas - West Lafayette, November 10 - 22, 1997)
 - Purdue University (Dallas - West Lafayette, November 10 - 22, 1997)
 - Purdue University (Dallas - West Lafayette, November 10 - 22, 1997)
 Sabre Kais and Qicun Shi discuss electronic shell structure and correlations in scattering of an electron on lithium-like atom with a variable nuclear charge slightly above two after a lecture of Imad Ladadwa about ionization cross sections at internal meeting of the quantum chemistry group. Purdue University, West Lafayette, Indiana, October 1, 1999.
 Construction of Mitchell Physics Buildings (TAMU project No. 2-2974) on campus of Texas A and M University, view from Chemical Engineering building. College Station, Texas, January 18, 2008
 Fountain of Purdue University Mall. West Lafayette, Indiana, March 10, 1998.
 - Purdue University - Chemical Department (Dallas - West Lafayette, November 10 - 22, 1997)
 - Purdue University - Chemical Department (Dallas - West Lafayette, November 10 - 22, 1997)
 - Purdue University - Chemical Department (Dallas - West Lafayette, November 10 - 22, 1997)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Happy Hollow Park in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 Purdue University Hall and Recitation Building. West Lafayette, Indiana, March 10, 1998.
 Purdue University Mall and Bell Tower. West Lafayette, Indiana, February 27, 1998.
 - Wabash River in West Lafayette 12/24/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Ross Hills Park near Lafayette IN 12/18/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Trail from Lafayette to Battle Ground 1/1/00 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 - Ross Hills Park near Lafayette IN 12/18/99 (West Lafayette IN, December 18, 1999 - January 1, 2000)
 Purdue University Memorial Union from State Street. West Lafayette, Indiana, March 10, 1998.
 Quantum chemistry group of Purdue University (Qicun Shi, Pablo Nigra, Jack Yang, Stephen Belair, Sabre Kais, Aaron Stanton) in front of "King Buffet" restaurant after $8 seafood dinner. Lafayette, Indiana, April 30, 1999.
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 - West Lafayette Nov. 26 - Dec. (West Lafayette, November 26, 1998 - January 3, 1999)
 Al Huda Engineering Works tower in West Bay. Doha, Qatar, March 15, 2013
 - Patriotic concert in West Lafayette, Purdue campus 7/4/98 (Lafayette, May 24 - July 12, 1998)
 - Patriotic concert in West Lafayette, Purdue campus 7/4/98 (Lafayette, May 24 - July 12, 1998)
 - Patriotic concert in West Lafayette, Purdue campus 7/4/98 (Lafayette, May 24 - July 12, 1998)
 Al Huda Engineering Works, Al Qassar and Olympic towers in West Bay. Doha, Qatar, February 1, 2012
 Al Huda Engineering Works Tower in West Bay during dust storm. Doha, Qatar, April 2, 2015
 Al Huda Engineering Works with reflections of Ezdan Hotel in West Bay. Doha, Qatar, March 15, 2013
 Engineering School of Baltic Fleet at Petrovskaya Street in Kronstadt. Saint Petersburg, Russia, January 3, 2016
 Ezdan and Al Huda Engineering Works towers in West Bay at early morning. Doha, Qatar, November 20, 2013
 Taawun and Al Huda Engineering Works towers at Al Betra Street in West Bay. Doha, Qatar, November 23, 2013
 Al Gassar and Al Huda Engineering Works towers in West Bay in orange dust. Doha, Qatar, April 2, 2015
 Entrance of Al Huda Engineering Works Tower in West Bay in orange dust. Doha, Qatar, April 2, 2015
 Al Huda Engineering Works and Taawun towers in West Bay during dust storm. Doha, Qatar, April 2, 2015
 Entrance of Al Huda Engineering Works Tower in West Bay during dust storm. Doha, Qatar, April 2, 2015
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