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New Books Network Podcast - C.J. Alvarez, A History of Construction on the US-Mexico Divide
No full textRecent debates over the building of a border wall on the U.S.-Mexico divide have raised logistical and ethical issues, leaving the historical record of border building uninvoked. A recent book, written by UT Austin professor Dr. C.J. Alvarez, offers an over one-hundred-year history that extends to before the building of a border wall in 1990. Border Land, Border Water: A History of Construction on the US-Mexico Divide (University of Texas Press, 2019) recounts the history of how both US and Mexican government agencies surveyed, organized, and operationalized land and water from 1848 until 2009. By centering the relationship between government agencies and border policing, Alvarez clearly shows how construction and manipulation of the border space’s natural features maintained the political and geographical form of the nation-state, how it reproduced the notion of the border space as something needing to be controlled and dominated, and how it transformed the border space into one of economic possibility and growth. The history of construction and hydraulic engineering on the divide is largely about the opposing forces of border building to keep certain people and things out, and border building to let certain things in. Alvarez lays bare this tension between tactical infrastructure and trade infrastructure both as forces that have organized border life. During the 1960s and 70s, “the ports of entry began to embody the ever-deepening contradictions embedded in policies designed to accelerate sanctioned economic exchange on the one hand while seeking to decelerate black market commerce on the other,” Alvarez writes (143). By the turn of the 21st century, Alvarez argues, most of the police construction on the border was designed to manage the negative effects of previous building projects and policies. In regards to the completion of the 2009 border fence, Alvarez writes, “It was overbuilding designed to compensate for an unsustainable immigration system, unsustainable ‘drug wars,’ and an unsustainable politics of scapegoating noncitizens. Far more successful at achieving its stated goals, however, was the infrastructure of cross-border commerce” (222). Dr. Alvarez utilizes extensive government records from the binational agency International Boundary and Water Commission (IBWC)/ Comisión Internacional de Límites y Aguas (CILA), records from Army Corps of Engineers, the INS, and the prodigious W.D. Smithers photograph collection from the Harry Ransom Center. The number of photographs included in the manuscript shows the vastness of the US-Mexico divide's natural landscape, shows how agencies attempted to make sense of such vastness, and shows what they constructed. Border Land, Border Water is a must-read for historians of the US-Mexico divide, environmental historians, and anyone interested in better understanding from a historical perspective current calls construction on the border.Office of the VP for Researc
Black Markets and the US-Mexico Border
No full textC.J. Alvarez reviews Border Contraband: A History of Smuggling across the Rio Grande by George T. Díaz (Austin: University of Texas Press, 2015)
Jose Maria Alvarez Biographical Sketch and Commentary - Accession 171 - M76 (92-94)
No full textThe Jose Maria Alvarez Papers consist of a paper titled “Conversaciones con Jose Maria Alvarez” by Juan Miguel Margalef in collaboration with Jesus Munarriz and Csaba Csuday. Alvarez is a Spanish author and historian who has written articles, books, movie scripts and poetry. The paper contains biographical information concerning Alvarez as well as comments on his writing. The paper is written in Spanish.https://digitalcommons.winthrop.edu/manuscriptcollection_findingaids/1304/thumbnail.jp
Dolores Gonzales Colloquy series featuring Jennifer Alvarez Dickinson, Making of an author : the fiction of Amado Muro
No full textJennifer Alvarez Dickinson discusses the implications of the fiction of Amado Muro, a psudonym used by Chester Seltzer, an Ohio born white man, writing as a young chicano
Co-digestion of the mechanically recovered organic fraction of municipal solid waste with slaughterhouse wastes
No full textThe current work aimed to resolve some long-standing questions about the potential benefits and limitations of co-digestion of slaughterhouse wastes. To achieve this, a laboratory-scale trial was carried out using the mechanically recovered organic fraction of municipal solid waste mixed with either sheep blood or a mixture of pig intestines with flotation fat. Both of these co-substrates are difficult to digest in isolation because of their high nitrogen and lipid concentrations, and are regulated as Category 3 materials under the Animal By-Products Regulations (EC 1069/2009). The results showed that at an organic loading rate of 2 kg VS m?3 day?1 with the slaughterhouse material making up 20% of the load on a volatile solids basis the process could operate successfully. As the loading was increased to 4 kg VS m?3 day?1 signs of inhibition appeared with both co-substrates, however, and volumetric methane production was reduced to a point where co-digestion gave no process advantage. The main operational problem encountered was an increase in the concentration of volatile fatty acids in the digestate, particularly propionic acid: this was thought to be a result of ammonia toxicity. The concentration of potentially toxic elements in the digestate made it unsuitable for agricultural application for food production, although the increased nitrogen content made it more valuable as a fertiliser for non-food crop use
Exponentially improved asymptotics for anharmonic eigenvalues
No full textContents: Part I. Exact WKB analysis of linear differential equations: Takahiro Kawai and Yoshitsugu Takei, Introduction-Exact WKB analysis of linear differential equations; its background and prospect (3-7); Takashi Aoki, Takahiro Kawai and Yoshitsugu Takei, On a complete description of the Stokes geometry for higher order ordinary differential equations with a large parameter via integral representations (9, 11-14); Setsuro Fujiié and Thierry Ramond, Exact WKB analysis and the Langer modification with application to barrier top resonances (9, 15-31); Naofumi Honda, Microlocal Stokes phenomena for holonomic modules (9, 33-38); Tatsuya Koike, On a regular singular point in the exact WKB analysis (9-10, 39-53); Tatsuya Koike, Asymptotics of the spectrum of Heun's equation and the exact WKB analysis (10, 55-70); Frédéric Pham, Multiple turning points in exact WKB analysis (variations on a theme of Stokes) (10, 71-85); Kôichi Uchiyama, Graphical illustration of Stokes phenomenon of integrals with saddles (10, 87-95); André Voros, Exact quantization method for the polynomial 1D Schrödinger equation (10, 97-108); Part II. Hyperasymptotics and asymptotics beyond all orders: C. J. Howls, Introduction-development of exponential and hyper-asymptotics (111-118); Gabriel Álvarez, Christopher J. Howls and Harris J. Silverstone, Connection formula, hyperasymptotics, and Schrödinger eigenvalues: dispersive hyperasymptotics and the anharmonic oscillator (119, 121-134); Ovidiu Costin and Rodica D. Costin, Asymptotic structure of movable singularities of solutions of nonlinear analytic differential systems (119, 135-143); E. Delabaere and C. J. Howls, Hyperasymptotics for multidimensional Laplace integrals with boundaries (119, 145-163); J. R. King [John Robert King], Interacting Stokes lines (119, 165-178); Hideyuki Majima, A vanishing theorem in asymptotic analysis with asymptotic estimates of coefficients of "asymptotic series" in several variables (120, 179-187); A. B. Olde Daalhuis, On the Borel transform of the uniform asymptotic expansion of Bessel functions of large order (120, 189-195); Part III. Asymptotic analysis and structure of non-linear differential equations: Takahiro Kawai and Yoshitsugu Takei, Introduction (199-202); Takashi Aoki, Takahiro Kawai and Yoshitsugu Takei, Can we find a new deformation of SL_J with respect to the parameters contained in ( P_J) (203, 205-208); A. R. Its and A. A. Kapaev, The irreducibility of the second Painlevé equation and the isomonodromy method (203, 209-222); Nalini Joshi, True solutions asymptotic to formal WKB solutions of the second Painlevé equation with large parameter (203, 223-229); Takahiro Kawai, Natural boundaries revisited through differential equations, infinite order or non-linear (203-204, 231-243); Masatoshi Noumi and Yasuhiko Yamada, Affine Weyl group symmetries in Painlevé type equations (204, 245-259); Kyoichi Takano, Defining manifolds for Painlevé equations (204, 261-269); Yoshitsugu Takei, An explicit description of the connection formula for the first Painlevé equation (204, 271-296)
Dataset: Alvarez varifocal X-ray lens
No full textThese are processed datasets used for the publication "Alvarez varifocal X-ray lens". File are in the *.dat and HDF format. .
If you require more information and additional data, please contact the corresponding author of this publication, at [email protected]
A pilot-scale trial comparing mesophilic and thermophilic digestion for the stabilisation of source segregated kitchen waste
No full textSource segregated food waste was collected from domestic properties and its composition determined together with the average weight produced per household, which was 2.91 kg per week. The waste was fed over a trial period lasting 58 weeks to an identical pair of 1.5 m3 anaerobic digesters, one at a mesophilic (36.5 oC) and the other at a thermophilic temperature (56 oC). The digesters were monitored daily for gas production, solids destruction and regularly for digestate characteristics including alkalinity, pH, volatile fatty acid (VFA) and ammonia concentrations. Both digesters showed high VFA and ammonia concentrations but in the mesophilic digester the pH remained stable at around 7.4, buffered by a high alkalinity of 13,000 mg l-1; whereas in the thermophilic digester VFA levels reached 45,000 mg l-1 causing a drop in pH and digester instability. In the mesophilic digester volatile solids (VS) destruction and specific gas yield were favourable, with 67% of the organic solids being converted to biogas at a methane content of 58% giving a biogas yield of 0.63 m3 kg-1 VS added. Digestion under thermophilic conditions showed potentially better VS destruction at 70% VS and a biogas yield of 0.67 m3 kg-1 VS added, but the shifts in alkalinity and the high VFA concentrations required a reduced loading to be applied. The maximum beneficial loading that could be achieved in the mesophilic digester was 4.0 kg VS m-3 d-1
Microbial enrichment culture responsible for the complete oxidative biodegradation of 3‑Amino-1,2,4-triazol-5-one (ATO), the reduced daughter product of the insensitive munitions compound 3‑Nitro-1,2,4-triazol-5-one (NTO)
No full text3-Nitro-1,2,4-triazol-5-one (NTO) is one of the main ingredients of many insensitive munitions, which are being used as replacements for conventional explosives. As its use becomes widespread, more research is needed to assess its environmental fate. Previous studies have shown that NTO is biologically reduced to 3-amino-1,2,4-triazol-5-one (ATO). However, the final degradation products of ATO are still unknown. We have studied the aerobic degradation of ATO by enrichment cultures derived from the soil. After multiple transfers, ATO degradation was monitored in closed bottles through measurements of inorganic carbon and nitrogen species. The results indicate that the members of the enrichment culture utilize ATO as the sole source of carbon and nitrogen. As ATO was mineralized to CO₂, N₂, and NH₄⁺, microbial growth was observed in the culture. Co-substrates addition did not increase the ATO degradation rate. Quantitative polymerase chain reaction analysis revealed that the organisms that enriched using ATO as carbon and nitrogen source were Terrimonas spp., Ramlibacter-related spp., Mesorhizobium spp., Hydrogenophaga spp., Ralstonia spp., Pseudomonas spp., Ectothiorhodospiraceae, and Sphingopyxis. This is the first study to report the complete mineralization of ATO by soil microorganisms, expanding our understanding of natural attenuation and bioremediation of the explosive NTO.Journal ArticleFinal article publishe
Effects of initial conditions and Mach number in the evolution of Richtmyer-Meshkov instabilities
No full textWe present an experimental study of the effects of shock intensity and initial conditions on the evolution of Richtmyer-Meshkov Instabilities (RMI). This study is carried out in a vertical shock tube with a single interface of sulfur-hexafluoride and air. We use combined particle image velocimetry (PIV) and planar laser induced fluorescence (PLIF) to obtain simultaneous measurements of velocity and density. These measurements enable us to determine single- and multi-point statistics of vector, scalar, and combined fields. We use these statistical descriptors to study the evolution of turbulence mixing in RMIs under different Mach numbers and initial conditions
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