Assessing effectiveness of Komagataeibacter strains for producing surface-microstructured cellulose via guided assembly-based biolithography.

In this study, a medical device made of surface microstructured bacterial cellulose was produced using cellulose‑producing acetic acid bacteria wild‑type strains in combination with guided assembly‑based biolithography. The medical device aims at interfering with the cell’s focal adhesion establishment and maturation around implantable devices placed in soft tissues by the symmetrical array on its surface. A total of 25 Komagataeibacter strains was evaluated over a three‑step selection. In the first step, the ability of strains to produce a suitable bacterial cellulose layer with high production yield was examined, then nine strains, with a uniform and smooth layer of bacterial cellulose, were cultured in a custom‑made silicone bioreactor and finally the characteristics of the symmetrical array of topographic features on the surface were analysed. Selected strains showed high inter and intra species variability in bacterial cellulose production. The devices obtained by K2G30, K1G4, DSM 46590 (Komagataeibacter xylinus), K2A8 (Komagataeibacter sp.) and DSM 15973T (Komagataeibacter sucrofermentas) strains were pouched‑formed with hexagonal surface pattern required for reducing the formation of fibrotic tissue around devices, once they are implanted in soft tissues. Our findings revealed the effectiveness of the selected Komagataeibacter wild‑type strains in producing surface microstructured bacterial cellulose pouches for making biomedical devices

Correlated Λd\Lambda d pairs from the Kstop−A→ΛdA′K^{-}_{stop} A \to \Lambda d A' reaction

Correlated $\Lambda d$ pairs emitted after the absorption of negative kaons at rest $K^{-}_{stop}A\to \Lambda d A'$ in light nuclei $^6Li$ and $^{12}C$ are studied. $\Lambda$-hyperons and deuterons are found to be preferentially emitted in opposite directions. The $\Lambda d$ invariant mass spectrum of $^6Li$ shows a bump whose mass is 3251$\pm$6 MeV/c$^2$. The bump mass (binding energy), width and yield are reported. The appearance of a bump is discussed in the realm of the [$\bar{K}3N$] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DA$\Phi$NE (LNF).Comment: 13 pages, 5 figures, accepted for publication in Phys. Lett.

The A(Kstop−,π±Σ∓)A′A(K^-_{stop},\pi^\pm\Sigma^\mp)A' reaction on p-shell nuclei

This letter is concerned with the study of the $K^-_{stop}A\rightarrow \pi^\pm\Sigma^\mp A'$ reaction in p-shell nuclei, i.e., $^{6,7}Li$, $^9Be$, $^{13}C$ and $^{16}O$. The $\pi^\pm\Sigma^\mp / K^-_{stop}$ emission rates are reported as a function of $A$. These rates are discussed in comparison with previous findings. The ratio $\pi^-\Sigma^+/\pi^+\Sigma^-$ in p-shell nuclei is found to depart largely from that on hydrogen, which provides support for large in-medium effects possibly generated by the sub-threshold $\Lambda(1405)$. The continuum momentum spectra of prompt pions and free sigmas are also discussed as well as the $\pi^\pm\Sigma^\mp$ missing mass behavior and the link with the reaction mechanism. The apparatus used for the investigation is the FINUDA spectrometer operating at the DA$\Phi$NE $\phi$-factory (LNF-INFN, Italy).Comment: 14 pages, 5 figures, accepted for publication in Phys. Lett.

Correlated Λt\Lambda t pairs from the absorption of K−K^- at rest in light nuclei

Novel data from the $K^{-}_{stop}A$ absorption reaction in light nuclei $^{6,7}$Li and $^{9}$Be are presented. The study aimed at finding $\Lambda t$ correlations. Regardless of $A$, the $\Lambda t$ pairs are preferentially emitted in opposite directions. Reaction modeling predominantly assigns to the $K^-_{stop}A\to\Lambda t(N)A'$ direct reactions the emission of the $\Lambda t$ pairs whose yield is found to range from $10^{-3}$ to $10^{-4}$$/K^-_{stop}$. The experiment was performed with the FINUDA spectrometer at DA$\Phi$NE (LNF).Comment: 11 pages, 5 figures, accepted for publication in Phys. Lett.

Endogeneity in the Relation between Poverty, Wealth and Life Satisfaction

This publication concentrates on the complex interplay between poverty, wealth and life satisfaction. Main areas of life are quantified in a multidimensional approach of poverty and wealth: Individual income, current health, occupational autonomy or employment status and also the mentioned life satisfaction. Data used in this publication were made available by the German Socio Economic Panel Study (SOEP) at the German Institute for Economic Research (DIW Berlin), Berlin. A period from 1998-2009 is examined. This study has two main goals: (1) To contribute to the interconnection between poverty, wealth and life satisfaction. (2) Besides, the endogeneity research regarding life satisfaction should be expanded. Reduced form vector-autoregressions (with first differences) were used to answer the questions. Therefore, granger-causality can be supposed. Major findings: An initial rise in life satisfaction can improve income and health, but not job autonomy. However, even the probability of returning from unemployment to employment can increase. Gender-specific differences are discussed.Der Fokus dieser Arbeit liegt auf der komplexen Wechselwirkung zwischen Armut, Reichtum und Lebenszufriedenheit. Die Konzentration gilt zentralen Bereichen des Lebens: Individuelles Einkommen, subjektiver Gesundheitszustand, berufliche Autonomie bzw. Erwerbstätigkeit sowie der angesprochenen Lebenszufriedenheit. Die Daten dieser Publikation beruhen auf Zahlen des Soziooekonomischen Panels (SOEP) am Deutschen Institut für Wirtschaftsforschung (DIW Berlin), Berlin. Es wird ein Zeitraum von 1998-2009 betrachtet. Dadurch wird überwiegend ein Beitrag zur Endogenitätsfrage geleistet und das verzweigte Zusammenspiel dieser Größen abgebildet. Methodisch wird dazu auf Reduced Form Vektorautoregressionen (mit First Differences) zurückgegriffen. Granger-Kausalität kann angenommen werden. Zentrale Ergebnisse: Ein anfänglicher Anstieg der Zufriedenheit erhöht das individuelle Einkommen sowie den Gesundheitszustand, aber nicht die berufliche Autonomie. Hingegen kann sich die Wahrscheinlichkeit erhöhen, dass man von einer Arbeitslosigkeit zurück in die Vollerwerbstätigkeit gelangt. Diskrepanzen zwischen den Geschlechtern werden diskutiert

First Results on 12Lambda-C production at DAPHNE

Lambda-hypernuclei are produced and studied, with the FINUDA spectrometer, for the first time at an e+e- collider: DAPHNE, the Frascati phi-factory. The slow negative kaons from phi(1020) decay are stopped in thin (0.2 g/cm^2) nuclear targets, and Lambda-hypernuclei formation is detected by measuring the momentum of the outgoing pi^-. A preliminary analysis on 12Lambda-C shows an energy resolution of 1.29 MeV FWHM on the hypernuclear levels, the best obtained so far with magnetic spectrometers at hadron facilities. Capture rates for the ground state and the excited ones are reported, and compared with previous experiments.Comment: 15 pages, 5 figures. v2: one reference updated. Accepted for publication in Phys. Lett.