Financial Factors, Firm size and Firm potential

Using a unique dataset covering the universe of Portuguese firms and their credit situation we show that financially constrained firms are found across the entire firm size distribution, account for a larger total asset share compared to standard heterogeneous firms models, and exhibit a higher cyclical sensitivity, conditional on size. In light of these findings we reassess the importance of the firm distribution in shaping aggregate outcomes in the canonical model of heterogeneous firms with financial frictions. We augment the productivity process with ex-ante heterogeneity of firms, allowing us to match the distribution of constrained firms conditional on size. This, together with the fact that constrained firms have a higher capital elasticity, leads to up to four times larger aggregate fluctuations and capital misallocation

Retrospektive Studie über Langzeitergebnisse und Lebensqualität nach Resektion von primären Knochentumoren im Becken unter besonderer Berücksichtigung verschiedener Rekonstruktionsmethoden

Welche Rekonstruktion nach Tumorresektion bietet neben guten onkologischen und funktionellen Resultaten einen komplikationsarmen Verlauf? Unter diesen Gesichtspunkten sind zwischen 1980 und 1998 an der Orthopädischen Universitätsklinik Münster 124 Patienten recherchiert worden, die an malignen Knochentumoren des Beckens erkrankt sind. Von 118 Operationen erfolgten zehn primäre Amputationen und 108 Rekonstruktionsverfahren je nach Defektausmaß. Anhand des MSTS-Score nach Enneking wurden funktionelle Ergebnisse von 59 Patienten ermittelt. Im Vergleich der postoperativen Funktion zeigen sich gute Resultate nach Rekonstruktion mit Autograft, Allograft, nach Defektbelassung oder Hüftverschiebeplastik. Schlechtere Resultate ergaben sich nach Amputationen, nach Rekonstruktionen mit Prothesen, mit Komposit-Allograft und mit Auto- und Allograft. Unter Berücksichtigung aller erhobenen Daten kann nach periacetabulären Resektionen die Hüftverschiebeplastik für junge Patienten empfohlen werden

MONITORIZAÇÃO DE MICROALGAS PLANCTÔNICAS POTENCIALMENTE TÓXICAS NA ÁREA DE MARICULTURA DA ENSEADA DE ARMAÇÃO DE ITAPOCOROY - PENHA - SC

This paper is a descriptive synthesis of approximately 17 months of phytoplankton sampling in the shellfish culture area of Enseada de Armação do Itapocoroy (Penha - Santa Catarina - Brazil). The goal of this program was to know the local phytoplankton composition, specially the toxic and potentially toxic ones; to verify the characteristics of water masses associated to the different phytoplankton assemblies and to monitor the occurrence of blooms of toxic or potentially toxic species, in order to prevent human intoxication by ingestion of contaminated shellfish. The results have indicated the occurrence of seasonal patterns in species succession. Potential producers of diarrhetic toxins tend to occur in winter and spring. From late spring to late summer the occurrence of Trichodesmium spp. indicate the possible presence of cyanobacteria toxins. Alexandrium fraterculus - a potential producer of paralytic toxin - has ocurred only in low cell densities and mainly in winter.O presente trabalho trata-se de uma síntese de aproximadamente 17 meses de amostragens de fitoplâncton na área de maricultura da Enseada de Armação do Itapocoroy, município de Penha, Santa Catarina. Os objetivos foram conhecer as principais espécies de microalgas planctônicas ocorrentes no local, especialmente as espécies tóxicas ou potencialmente tóxicas; verificar as características das massas de água associadas às diferentes espécies ou assembléias de microalgas (salinidade, temperatura e transparência) e monitorar a ocorrência de densidades elevadas de espécies tóxicas ou potencialmente tóxicas para prevenir possíveis intoxicações pela ingestão de moluscos com acúmulo de ficotoxinas. Os resultados indicam a ocorrência de padrões sazonais de sucessão de espécies. Espécies potencialmente produtoras de toxinas diarréicas e amnésicas tendem a ocorrer nos meses de inverno e primavera. Entre o final da primavera e durante o verão a ocorrência de Trichodesmium spp. indica possibilidade de toxinas de cianobactérias. Alexandrium fraterculus - um potencial produtor de toxina paralisante - ocorreu em pequenas densidades e principalmente no inverno

Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging

Site-selective probing of iodine 4d orbitals at 13.1 nm was used to characterize the photolysis of CH2I2 and CH2BrI initiated at 202.5 nm. Time-dependent fragment ion momenta were recorded using Coulomb explosion imaging mass spectrometry and used to determine the structural dynamics of the dissociating molecules. Correlations between these fragment momenta, as well as the onset times of electron transfer reactions between them, indicate that each molecule can undergo neutral three-body photolysis. For CH2I2, the structural evolution of the neutral molecule was simultaneously characterized along the C-I and I-C-I coordinates, demonstrating the sensitivity of these measurements to nuclear motion along multiple degrees of freedom