Zwischen radikaler Stadtanalyse, Aktivismus und kultureller Intervention: Kommentar zu Mike Davis‘ „Festung L.A.“ (2006 [1990])

Im Abgleich mit vergleichbaren Tendenzen in deutschen Städten wirkte die politische Rezeption von City of quartz als Keimzelle für zunächst lose Zusammenkünfte aktivistischer, künstlerischer und stadterforschender Initiativen in Frankfurt am Main und Berlin

CAPILARES DA TRANSFORMAÇÃO SOCIAL

This article initially develops a critical discussion of manuel Castells' concept of urban social movements. In the following section, the political, social and  spatial conditions of urban movements in latin-American metropolises during the twentieth century are analyzed. Three phases and types of movements are distinguished here: radical urban revolts in the context of the student movements in the late 1960s; urban movements resurrecting during the decline of authoritarian regimes in the 1970s; and reactions to the social consequences of neoliberalism by collective urban agents since the late 1990s.o artigo discute inicialmente, de forma crítica, o conceito de “movimento social urbano” cunhado por manuel Castells, e investiga, utilizando exemplos dediferentes metrópoles sul-americanas, a questão de saber nos marcos de quais “constelações societais e políticas” os movimentos urbanos que objetivavammudanças fundamentais nas cidades durante a segunda metade do século xx puderam se desenvolver. Serão diferenciadas três fases: as revoltas urbanas radicais que se seguiram aos movimentos estudantis do final dos anos 60, a atuação dos movimentos urbanos no processo de democratização durante a fase final dos regimes autoritários e a fase marcada pelos atores coletivos que, no final dos anos 90, reagiram às consequências sociais do neoliberalismo

Berlin aufgemischt: abendländisch, multikulturell, kosmopolitisch? Die politische Konstruktion einer Einwanderungsstadt

Seit Jahrzehnten beziehen sich politische, mediale und sozialwissenschaftliche Debatten über "Integration" oder "Multikultur" auf Berliner Stadtteile wie Kreuzberg und Neukölln. Meist basieren sie auf unhinterfragten historischen Konzepten von Nation, Kultur oder Integration sowie auf diskursiven Konstrukten eines "Eigenen" und eines "Fremden". Dieses Buch untersucht solche Diskursmuster u.a. anhand von Interviews mit hochrangigen Berliner Politikern und Funktionären. Es zeigt, wie die Stadtentwicklung Berlins und mehrheitsgesellschaftliche Grenzziehungen gegenüber Einwanderern aufeinander einwirken und zeichnet deren historische Linien nach

Über (Un-)Möglichkeiten, hiesige Stadtforschung zu postkolonialisieren

Ausgehend von der These, dass westliche Stadttheorie auf eurozentrischen Prämissen gründet, die urbane Modernität an westliche Städte koppeln und Städte anderswo dem Entwicklungsparadigma einer nachholenden Modernisierung unterwerfen, argumentiert der Beitrag für die Notwendigkeit, die urban studies zu postkolonialisieren. An zwei Beispielen werden Möglichkeiten diskutiert, theoretische und methodische Ansätze einer Stadtforschung voranzutreiben, die postkoloniale Kritik reflektieren. Zum einen erfolgt ein Versuch, Theorien aus ‚dem Süden‘ anzuwenden, um etablierte Wahrheiten in der Stadt des globalen Nordens zu erschüttern. Zum anderen wird das internationale Forschungsvorhaben „Global Prayers – Redemption and Liberation in the City“ als Versuch diskutiert, im Rahmen eines transregionalen, transdisziplinären und transinstitutionellen Ansatzes einige eurozentrische Fundamente der urban studies zu dekonstruieren und eine kosmopolitischere Stadtforschung voranzutreiben

Pluralistisches Theoretisieren der Stadt und ihrer Verknüpfungen mit dem Kolonialen. Replik

Die Kommentare zu meinem Beitrag unterscheiden sich in ihren Fokussen und ihrem Gestus sehr deutlich, alle vier problematisieren aber spezifische Aspekte des Theoretisierens der Stadt im Verhältnis zum Kolonialen. Meine Replik greift daher die theoretischen Argumentationslinien der Kommentare auf – zum einen, um auf erhobene Kritiken zu antworten, zum anderen, um diese dafür zu nutzen, eine im Text zu kurz gekommene Debatte über theoretische Fragen bezogen auf das Ziel einer Postkolonialisierung der Stadtforschung zu vertiefen. ..

On-line SPE LC-MS/MS for the quantification of Δ9-tetrahydrocannabinol (THC) and its two major metabolites in human peripheral blood by liquid chromatography tandem mass spectrometry

A universal and robust analytical method for the determination of Δ9-tetrahydrocannabinol (THC) and two of its metabolites Δ9-(11-OH)-tetrahydrocannabinol (11-OH-THC) and 11-nor-Δ9-carboxy-tetrahydrocannabinol (THC-COOH) in human whole blood was developed and validated for use in forensic toxicology. Protein precipitation, integrated solid phase extraction and on-line enrichment followed by high-performance liquid chromatography separation and detection with a triple quadrupole mass spectrometer were combined. The linear ranges used for the three cannabinoids were from 0.5 to 20ng/mL for THC and 11-OH-THC and from 2.5 to 100ng/mL for THC-COOH, therefore covering the requirements for forensic use. Correlation coefficients of 0.9980 or better were achieved for all three analytes. No relevant hydrolysis was observed for THC-COOH glucuronide with this procedure — in contrast to our previous GC-MS procedure, which obviously lead to an artificial increase of the THC-COOH concentration due to the hydrolysis of the glucuronide-conjugate occurring at high pH during the phase-transfer catalyzed methylation ste

Valve-in-valve TAVI and risk of coronary obstruction: Validation of the VIVID classification.

BACKGROUND The Valve-in-Valve International Data (VIVID) registry proposed a simplified classification to assess the risk of coronary obstruction during valve-in-valve transcatheter aortic valve implantation (ViV-TAVI) based on preprocedural multi-detector computed tomography (MDCT). We investigated the validity of the VIVID classification in patients undergoing ViV-TAVI for degenerated bioprostheses. METHODS Patients undergoing ViV-TAVI for degenerated bioprostheses were prospectively included in this study. The risk of coronary obstruction among patients treated with stented valves was retrospectively evaluated based on anatomical assessment on pre-procedural MDCT. RESULTS Among a total of 137 patients that underwent ViV-TAVI between August 2007 and June 2021, 109 patients had stented, sutureless, or transcatheter degenerated bioprosthesis of which 96 (88%) had adequate MDCT data for risk assessment. High-risk anatomy for coronary obstruction (VIVID type IIB, IIIB, or IIIC) in either the left or right coronary artery was observed in 30 patients (31.3%). Of the 30 patients with high-risk anatomy, coronary protection using wire protection or BASILICA (bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction) was performed in 3 patients (10.0%). Three patients treated with stentless valves and one patient treated with a stented valve with externally mounted leaflets had coronary obstruction. None of the patients with high risk anatomy according to MDCT had coronary obstruction even without coronary protection. CONCLUSIONS Coronary obstruction occurred in none of the patients classified as high-risk patients according to the VIVID classification despite the absence of coronary protection. Refined tools are required to assess the risk of coronary obstruction. CLINICAL TRIAL REGISTRATION https://www. CLINICALTRIALS gov. NCT01368250

Mortality, Stroke, and Hospitalization Associated With Deferred vs Expedited Aortic Valve Replacement in Patients Referred for Symptomatic Severe Aortic Stenosis During the COVID-19 Pandemic.

This cohort study evaluates the outcomes associated with deferred vs expedited aortic valve replacement in patients with severe aortic stenosis during the COVID-19 pandemic

Impact of first-phase ejection fraction on clinical outcomes in patients undergoing transcatheter aortic valve implantation.

BACKGROUND First-phase left ventricular ejection fraction (LVEF1) is an early marker of left ventricular remodeling. Reduced LVEF1 has been associated with adverse prognosis in patients with aortic stenosis (AS) and preserved left ventricular ejection fraction (LVEF). It remains to be determined, whether reduced LVEF1 differentiates clinical outcomes after aortic valve replacement. OBJECTIVES We investigated the impact of LVEF1 on clinical outcomes in patients undergoing transcatheter aortic valve implantation (TAVI) for symptomatic severe AS with preserved LVEF (≥ 50%). METHODS In the prospective Bern TAVI registry, we retrospectively categorized patients according to LVEF1 as assessed by transthoracic echocardiography. Clinical outcomes of interest were all-cause mortality and residual heart failure symptoms (New York Heart Association (NYHA) functional class III or IV) at 1 year after TAVI. RESULTS A total of 644 patients undergoing TAVI between January 2014 and December 2019 were included in the present analysis. Patients with low LVEF1 had a lower LVEF (62.0 ± 6.89% vs. 64.3 ± 7.82%, P < 0.001) and a higher left ventricular mass index (129.3 ± 39.1 g/m2 vs. 121.5 ± 38.0 g/m2; P = 0.027) compared to patients with high LVEF1. At 1 year, the incidence of all-cause/cardiovascular death, and NYHA III or IV were comparable between patients with low and high LVEF1 (8.3% vs. 9.2%; P = 0.773, 3.9% vs. 6.0%; P = 0.276, 12.9% vs. 12.2%; P = 0.892, respectively). CONCLUSIONS Reduced LVEF1 was not associated with adverse clinical outcomes following TAVI in patients with symptomatic severe AS with preserved LVEF. CLINICAL TRIAL REGISTRATION https://www. CLINICALTRIALS gov. NCT01368250