2,068,413 research outputs found
Hongda Harry Wu
No full textA black and white negative of Hongda Harry Wu speaking at the Sam Rayburn Public Affairs Symposium.https://lair.etamu.edu/scua-univ-photos-browse-all/2191/thumbnail.jp
"Effect of Temperature on High Shear-Induced Gelation of Charge-Stabilized Colloids without Adding Electrolytes"
No full textWe demonstrated previously (Wu, H.; Zaccone, A.; Tsoutsoura, A.; Lattuada, M.; Morbidelli, M. Langmuir 2009,25, 4715) that, for a colloid stabilized by charges from both polymer chain-end groups and adsorbed sulfonate surfactants, when the surfactant surface density reaches a certain critical value, the shear-induced gelation becomes unachievable at room temperature, even at an extremely large Peclet number, Pe = 4.6 x 10(4). This is due to the presence of the short-range, repulsive hydration force generated by the adsorbed surfactant. In this work, we investigate how such hydration force affects the shear-induced gelation at higher temperatures, in the range between 303 and 338 K. It is found that a colloidal system, which does not gel at room temperature in a microchannel at a fixed Pe = 3.7 x 10(4), does gel when temperature increases to a certain value. The critical initial particle volume fraction for the gelation to occur decreases as temperature increases. These results indicate that the effect of the hydration force oil the gelation decreases as temperature increases. Moreover, we have observed that at the criticality only part of the primary particles is converted to the gel network and the effective particle volume fraction forming the gel network does not change significantly with temperature. The effective particle volume fraction is also independent of the surfactant surface coverage. Since the effective particle volume fraction corresponds to space filling requirement of a standing gel network, which is mainly related to the clusters structure, this result indicates that at a given shear rate the Cluster structure does not change significantly with the surfactant Surface coverage. Oil the other hand, since the cluster morphology is a strong function of the shear rate, we have observed that when the Peclet number is lowered from Pe = 3.7 x 10(4) to 1.7 x 10(4), the effective particle Volume fraction reduces from 0.19 to 0.12 at 3 13 K
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Acoustic radiation due to scattering of T-S wave by the mean-flow distortion induced by steady local suction
No full textSubstantial sound waves can be generated by boundary-layer instability modes when the latter are scattered by a rapid mean-flow distortion. This is a rather generic mechanism and operates when an oncoming T-S wave is scattered by a steady local suction slot. This paper focuses on this problem by extending a recently developed Local Scattering Theory (Wu & Dong, J. Fluid Mech. submitted), where a so-called transmission coefficient, defined as the ratio of the T-S wave amplitude downstream of the scatter to that upstream, is introduced to characterize the effect of a local scatter on boundary-layer instability and transition. As in the earlier work, the mathematical formulation is based on triple-deck formulism, but in order to accommodate the acoustic far field, which was not considered in the paper mentioned, the unsteady terms in the upper deck, which play a leading-order role in radiation, are retained, and the influence of the radiated sound on the near-wall perturbation is included. The upper deck equation for the pressure is the Helmholtz equation rather than the Laplace equation. This leads to a modified pressure-displacement relation, which is coupled with the linearized boundary-layer equations in the lower deck. Discretization of the whole system formulates a generalized eigenvalue problem, which is solved numerically. It is found that suction suppresses oncoming T-S waves, and this effect increases with the suction velocity and the slot width. The directivity is ndependent of the flow parameters only when the Mach number is low. The intensity of the radiated sound in general increases with the frequency, the suction velocity and the width of the suction slot. Interestingly, for O(1) suction velocities, the radiated sound is very weak, indicating that the gain of stabilizing effect does not cause aeroacoustic penalty
Mycobacterium smegmatis HtrA blocks the toxic activity of a putative cell wall amidase. Wu et al. 2019
No full textUncropped Western blots from Mycobacterium smegmatis HtrA blocks the toxic activity of a putative cell wall amidase, Wu et al. 201
Empress Wu the Great Tang Dynasty China
No full textEurope and Great Britain have had many sovereign queens in the course of history. In ancient China, there was none of that. Only one Empress ever ruled China in her own name Empress Wu. Given her startling performance in a world of deadly intrigue and shifting loyalties, Wu is still respected as an effective and clear-sighted ruler.Intro -- Preface -- Chapter 1. Origins of a Future Sovereign -- The Wu Family -- Wu's Father Rises from a Merchant to a Nobleman -- Mr. Wu Marries Up -- Mr. Wu Becomes a Governor -- Mr. Wu Leaves His Family Bereft -- The Establishment of the Tang Dynasty -- Mr. Wu's Sponsor Becomes the Second Emperor of the Tang Dynasty -- Empress Changsun and a Few of the Courtiers -- Chapter 2. Miss Wu Becomes an Imperial Concubine -- The Sons Vie for the Succession -- Selecting the Crown Prince -- Introduction to the Crown Prince -- Sent to a Nunnery -- The New Emperor Reigns -- Empress Wang Brings Wu Back to the Palace -- Empress Wang and Concubine Xiao Unite against Concubine Wu -- Concubine Wu Fights Back -- The Courtiers Take Sides -- Empress Wang and Her Supporters Take a Mis-Step -- Empress Wang and the Crown Prince are Removed -- Wu Becomes Empress -- Chapter 3. From Empress to Empress Dowager -- Advancing Supporters and Annihilating Opponents -- Taking Part in Politics -- The Pleasures of Traveling -- Relationship With Her Children -- Chapter 4. The Empress Dowager Consolidates Her Power -- Standing at the Top -- View from the Summit -- Chapter 5. Rebellions -- The Largest Rebellion -- The Rebellions of the Princes Li -- Other Rebellions -- Abuse of Power at Every Level -- Chapter 6. Picking Favorites -- Naming a Successor -- Empress Wu's Favorites -- Chapter 7. Relations with Other Nations -- Tibet -- Korea -- The Tujue Clan -- Japan and Arabia -- Chapter 8. Famous Legends About Empress Wu -- Face Reading -- Flowers Blooming in Winter -- Other LegendsEurope and Great Britain have had many sovereign queens in the course of history. In ancient China, there was none of that. Only one Empress ever ruled China in her own name Empress Wu. Given her startling performance in a world of deadly intrigue and shifting loyalties, Wu is still respected as an effective and clear-sighted ruler.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Control and Filtering for Discrete Linear Repetitive Processes with H infty and ell 2--ell infty Performance
No full textRepetitive processes are characterized by a series of sweeps, termed passes, through a set of dynamics defined over a finite duration known as the pass length. On each pass an output, termed the pass profile, is produced which acts as a forcing function on, and hence contributes to, the dynamics of the next pass profile. This can lead to oscillations which increase in amplitude in the pass to pass direction and cannot be controlled by standard control laws. Here we give new results on the design of physically based control laws for the sub-class of so-called discrete linear repetitive processes which arise in applications areas such as iterative learning control. The main contribution is to show how control law design can be undertaken within the framework of a general robust filtering problem with guaranteed levels of performance. In particular, we develop algorithms for the design of an H? and dynamic output feedback controller and filter which guarantees that the resulting controlled (filtering error) process, respectively, is stable along the pass and has prescribed disturbance attenuation performance as measured by and – norms
How on earth did I lose friendships over COVID-19?
No full textJournal #84 from Media Rise's Quarantined Across Borders Collection by Jingsi Christina Wu. From China. Quarantined in U.S., New York.Media Rise Publications. Quarantined Across Borders Collection. Edited by Dr. Srividya "Srivi" Ramasubramanian.Despite our best efforts at curbing unpleasant arguments that would result from our fundamentally different opinions of the Trump presidency, it took a public health crisis to rock such growingly tenuous friendships and solidify the internal boundaries that arise from our conflicting ideologies within the Chinese diasporic community
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Eugene Wu oral history interview and transcript
No full textThis recording and transcript form part of a collection of oral history interviews conducted by the Chao Center for Asian Studies at Rice University. This collection includes audio recordings and transcripts of interviews with Asian Americans native to or living in Houston.Eugene Wu was born in Guangzhou, Guangdong Province in China in 1 978. Five years later, he moved to Odessa, Texas along with his mother and father. Not long afterward, the Wu family moved to Houston, where Mr. Wu attended various schools in the area. After earning his bachelor’s degree from A&M University, Mr. Wu attended the LBJ School for Public Affairs at the University of Texas at Austin, obtaining his Master’s Degree in Public Policy. Afterward, Mr. Wu earned his Law degree from the South Texas School of Law. In addition to being involved in a variety of community organizations, Mr. Wu currently serves as an attorney in Harris County and is a state representative for District 137
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