For the in situ reductive immobilization of U to be an acceptable strategy for the removal of that element from groundwater, the long-term stability of U(IV) must be determined. Rates of biotransformation of Fe species influence the mineralogy of the resulting products (Fredrickson et al., 2003; Senko et al., 2005), and we hypothesize that the rate of U(VI) reduction influences the mineralogy of resultant U(IV) precipitates. We hypothesize that slower rates of U(VI) reduction will yield U(IV) phases that are more resistant to reoxidation, and will therefore be more stable upon cessation of electron donor addition. U(IV) phases formed by relatively slow reduction may be more crystalline or larger in comparison to their relatively rapidly-formed counterparts (Figure 1), thus limiting the reactivity of slowly-formed U(IV) phases toward various oxidants. The physical location of U(IV) precipitates relative to bacterial cells may also limit the reactivity of biogenic U(IV) phases. In this situation, we expect that precipitation of U(IV) within the bacterial cell may protect U(IV) from reoxidation by limiting physical contact between U(IV) and oxidants (Figure 1). We assessed the effect of U(VI) reduction rate on the subsequent reoxidation of biogenic U(IV) and are currently conducting column scale studies to determine …

A flier notifying students that the FOCUS Bible Study on the UNT campus was cancelled for the night. There is also a contact email for interested students.

A flier advertising an event titled "Human Rights and Mayan Ethical Perspectives" with Jorge M. Rodriguez speaking. There is a Mayan calendar with a summary of the event's focus in the middle. The date, time, and location are also listed at the bottom.

A flier advertising a meeting of the Immigrant Labor Rights Tour. It includes the logo of the group and information about the event. The sponsors are listed beneath the summary.

Over the past two decades, numerous studies have produced high quality information on the rates at which bacteria can reduce metal oxides. The prototypical study--such as the one depicted to the right--focuses on only a few of the myriad variables affecting the rate. This approach allows for effective dissection of the mechanisms underlying DMRB activity, but, it also produces disjoint information that must be synthesized if we hope to predict the behavior of bacteria at the systems level.

A flier advertising a fashion show hosted by MOSÉ to raise money for HIV/AIDS. It includes date, time, and location and ticket information.

Poster/flyer advertising a concert by Malise with Books on Tape and Captain Ahab on April 23, 2006, at The Metrognome Collective.

A flier advertising an event titled "GLBT History of the Nation and Dallas Revealed". It includes a short description and information about the date, time, and location of the presentation. The supporters of the event are listed at the bottom.

A flier advertising a Native American Languages colloquium hosted by UNT. It lists the speakers and information about the date, time, and location of the event.

A document advertising a lecture titled "The New Era in Kuwait" with speakers Dr. Amer Al-Tameeni and Dr. Sami Al-Faraj. It includes a date, time, and location for the event and lists the UNT sponsors.

A flier advertising an event titled Neruda's Legacy in Chilean Society held at UNT. A professor from the Universidad de Concepción in Chile. It includes the location, date, and time as well as a short description of the event.

A flier advertising the need for volunteers at the '6th Annual Mean Green Blowout'. There is a description of the requirements for volunteers before the event happens and locations where they can sign up.