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Parabolic trough receivers, or heat collection elements (HCEs), absorb sunlight focused by the mirrors and transfer that thermal energy to a fluid flowing within them. Thje absorbing tube of these receivers typically operates around 400 C (752 F). HCE manufacturers prevent thermal loss from the absorbing tube to the environment by using sputtered selective Cermet coatings on the absorber and by surrounding the absorber with a glass-enclosed evacuated annulus. This work quantifies the heat loss of the Solel UVAC2 and Schott PTR70 HCEs. At 400 C, the HCEs perform similarly, losing about 400 W/m of HCE length. To put this in perspective, the incident beam radiation on a 5 m mirror aperture is about 4500 W/m, with about 75% of that energy ({approx} 3400 W/m) reaching the absorber surface. Of the 3400 W/m on the absorber, about 3000 W/m is absorbed into the working fluid while 400 W/m is lost to the environment.

This poster examines how therapeutic interventions to identify and address symptoms of trauma, as well as to promote forgiveness of unpleasant experiences, would be associated with lower rates of depression in people living with HIV/AIDS.

This poster investigates the extent to which forgiveness of self mediates the relationship between sense of control and resilience.

This poster tests a model wherein resilience acts as a mediator between forgiveness and one's perception of stigma.

This poster examines the relationships between gender differentiated HIV-related coping strategies and depression.

This poster examines relationships between health protective sexual communication, depression, and STD attitudes.

This poster examines the relationships between forgiveness, spirituality, and perceptions of stigma in the mental and physiological health of women living with HIV/AIDS.

This poster suggests that positive and negative personality characteristics plus social functioning relate to psychological quality of life in college students.

This poster tests the efficacy of forgiveness to affect the quality of life in women living with HIV.

This poster suggests that a biopsychosocial approach may be beneficial to people living with HIV/AIDS to reduce stress.

This poster investigates HIV-related self-stigma and prevalence of symptoms as stressors for people living with HIV.

This poster discusses how forgiveness may be associated with less anxiety among African-American women living with HIV.

This poster examines how the relationships between trauma, perceived stress, and self-esteem affect emotional well-being in college students.

This poster examines the role of forgiveness and stigma in health distress in both adherent and non-adherent HIV+ Individuals.

This poster uses social cognitive theory to model the relationship between health distress, denial, and daily hassles faced by HIV individuals.

Poster presented at iConference 2016

Oxy-fired or low-nitrogen combustion is a technology that will facilitate CO2 capture while also reducing NOx formation and which offers the opportunity for near-zero emissions coal combustion via either the retrofit of existing power plants, or the design of new power plants. Because of the opportunity to improve the environmental performance of the existing coal fired fleet (currently approximately 800 GW of capacity in the US alone) and the potential for converting these plants from air-blown to oxy-fired burners, NETL’s Office of Research & Development is focusing its attention on the impact of retrofitting existing plants on the service life of the materials of construction

The STAR Forward TPCs (FTPCs) extend the STAR acceptance for charged particles into the region 2.5 < |eta| < 4.0. We see the first signal of directed flow (v{sub 1}) at RHIC energies. While v{sub 1} is consistent with zero in the central rapidity region it rises up to 2 percent at pseudorapidities of +-4. With this signal we can verify that elliptic flow (v{sub 2}) is in-plane. The measurement of v{sub 2} in the FTPCs confirms the falloff by a factor of about 2 compared to mid-rapidity previously seen by PHOBOS [1]. In addition we look for higher harmonics (v{sub n}, n>2) where in the case of v{sub 4} a signal is seen in the STAR TPC. With the available statistics for the FTPCs we give an upper limit for these harmonics, since the results agree with zero within the errors. However, the falloff of v{sub 4} from mid-rapidity to forward-rapidities appears to be faster than for v{sub 2}.[1] B.B. Back. Phys. Rev. Lett. 89, 222301 (2002)

A poster and activity sheet about the water cycle and water quality for kids.

Poster presented at the 2015 Library Publishing Forum. This poster provides an overview of a recently launched scholarly publishing service at the University of North Texas.

Poster presented at the 2015 Association of College and Research Libraries (ACRL) Annual Conference. This poster provides an overview of a recently launched scholarly publishing service at the University of North Texas.

Poster for the 2015 University of North Texas (UNT) Graduate Exhibition. This poster discusses the evaluation of three major emission sources on the Dallas-Fort Worth ozone levels using photochemical modeling.

Poster presentation for the Association of College and Research Libraries (ACRL) Annual Conference. This poster summarizes the results of a survey administered by the University of North Texas (UNT) Libraries Cataloging and Metadata Services Department from October 27 through November 17, 2014. The purpose of the research study was to assess how Public Service employees rate the importance of Cataloging and Metadata Services activities, and how satisfied Public Service employees are with Cataloging and Metadata Services activities.