905 resultados para in-bin drying


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Measurements of charged-particle fragmentation functions of jets produced in ultra-relativistic nuclear collisions can provide insight into the modification of parton showers in the hot, dense medium created in the collisions. ATLAS has measured jets in √sNN=2.76 TeV Pb+Pb collisions at the LHC using a data set recorded in 2011 with an integrated luminosity of 0.14 nb−1. Jets were reconstructed using the anti-kt algorithm with distance parameter values R = 0.2, 0.3, and 0.4. Distributions of charged-particle transverse momentum and longitudinal momentum fraction are reported for seven bins in collision centrality for R=0.4 jets with pjetT>100 GeV. Commensurate minimum pT values are used for the other radii. Ratios of fragment distributions in each centrality bin to those measured in the most peripheral bin are presented. These ratios show a reduction of fragment yield in central collisions relative to peripheral collisions at intermediate z values, 0.04≲z≲0.2 and an enhancement in fragment yield for z≲0.04. A smaller, less significant enhancement is observed at large z and large pT in central collisions.

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BACKGROUND: Demineralized bone matrix (DBM) is used for the treatment of osseous defects. Conditioned medium from native bone chips can activate transforming growth factor (TGF)-β signaling in mesenchymal cells. The aim of the study was to determine whether processing of native bone into DBM affects the activity of the conditioned medium. METHODS: Porcine cortical bone blocks were subjected to defatting, different concentrations of hydrochloric acid and various temperatures. DBM was lyophilized, ground, and placed into culture medium. Human gingiva and periodontal fibroblasts were exposed to the respective conditioned medium (DBCM). Changes in the expression of TGF-β target genes were determined. RESULTS: DBCM altered the expression of TGF-β target genes, e.g., adrenomedullin, pentraxin 3, KN Motif And Ankyrin Repeat Domains 4, interleukin 11, NADPH oxidase 4, and BTB (POZ) Domain Containing 11, by at least five-fold. The response was observed in fibroblasts from both sources. Defatting lowered the activity of DBCM. The TGF-β receptor type I kinase inhibitor SB431542, but not the inhibitor of bone morphogenetic protein receptor dorsomorphin, blocked the effects of DBCM on gene expression. Moreover, conditioned medium obtained from commercial human DBM modulated the expression of TGF-β target genes. CONCLUSION: The findings suggest that the conditioned medium from demineralized bone matrix can activate TGF-β signaling in oral fibroblasts. KEYWORDS: TGF-beta superfamily proteins; bone; bone substitutes; bone transplantation; conditioned media; freeze drying

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Über Gewalt und Liebe: Transnationale Adoption in Österreich Julia Rehsmann Eine Adoption bedeutet meist den Bruch mit der leiblichen Familie – zu verstehen als ein „Akt der Gewalt“ – und die Inkorporation in ein neues Familiennetzwerk – ein „Akt der Liebe“. Kinder zu bekommen wird in unserer Gesellschaft als wichtiger Teil des Lebens gesehen und trotz Fortschritten in der Reproduktionsmedizin bleibt die Zahl international adoptierter Kinder global gesehen auf einem gleich hohen Niveau. Im Rahmen einer Adoption werden vorherrschende Konzepte von Verwandtschaft und Zugehörigkeit in Frage gestellt, da die Beziehung zwischen Eltern und Kind nicht auf biogenetischer, sondern auf sozialer, emotionaler und rechtlicher Verbundenheit basiert. Wenn Adoptionen zwischen verschiedenen Ländern zustande kommen und das Kind meist anders aussieht als die Adoptiveltern, tauchen unweigerlich Fragen zu Identität, Zu- gehörigkeit, race und Kultur auf. Antworten zu Fragen wie „Wer bin ich?“ und „Woher komme ich?“ sind im Falle von Adoption und insbesondere von transnationaler Adoption komplizierter und schwieriger zu finden als im Falle der klaren biogenetischen Eltern-Kind-Beziehung. Welche Bedeutung hat diese Migration junger Kinder vor allem aus armen Nationen in die wohlhabenderen Länder der Vereinigten Staaten und Europas? Welche Bedeutung haben die in den letzten Jahren vermehrt auftretenden Reisen von Adoptierten und ihren Familien in ihre jeweiligen Geburtsländer? Die Adoptionsfamilie widerspricht in gewisser Hinsicht dem Bild der Familie als Teil des privaten Lebens, da sie während des Adoptionsprozesses von Bereichen des öffentlichen Lebens (Institutionen, Agenturen, Gesetzen) beeinflusst und bestimmt wird. Transnationale Adoptionen stellen nicht nur Individuen, sondern auch staatliche Institutionen vor große Herausforderungen und verlangen nach neuen Strategien im Umgang mit neuen Familienstrukturen. Im Rahmen des Vortrags soll ein Überblick über das Phänomen in Österreich gegeben werden und in Bezug zu anderen sozialanthro-pologischen Arbeiten zum Thema gesetzt werden, wobei in der empirischen Forschung der Fokus auf Familien mit Kindern aus Äthiopien lag.

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Bibliograph. Nachweis: Wolf, Sylvia: Politische Karikaturen in Deutschland 1848/49. Mittenwald 1982. – vgl. 1.52 Nr. 1

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Sphagnum peatlands in the oceanic-continental transition zone of Poland are currently influenced by climatic and anthropogenic factors that lead to peat desiccation and susceptibility to fire. Little is known about the response of Sphagnum peatland testate amoebae (TA) to the combined effects of drought and fire. To understand the relationships between hydrology and fire dynamics, we used high-resolution multi-proxy palaeoecological data to reconstruct 2000 years of mire history in northern Poland. We employed a new approach for Polish peatlands – joint TA-based water table depth and charcoal-inferred fire activity reconstructions. In addition, the response of most abundant TA hydrological indicators to charcoal-inferred fire activity was assessed. The results show four hydrological stages of peatland development: moderately wet (from ∼35 BC to 800 AD), wet (from ∼800 to 1390 AD), dry (from ∼1390 to 1700 AD) and with an instable water table (from ∼1700 to 2012 AD). Fire activity has increased in the last millennium after constant human presence in the mire surroundings. Higher fire activity caused a rise in the water table, but later an abrupt drought appeared at the onset of the Little Ice Age. This dry phase is characterized by high ash contents and high charcoal-inferred fire activity. Fires preceded hydrological change and the response of TA to fire was indirect. Peatland drying and hydrological instability was connected with TA community changes from wet (dominance of Archerella flavum, Hyalosphenia papilio, Amphitrema wrightianum) to dry (dominance of Cryptodifflugia oviformis, Euglypha rotunda); however, no clear fire indicator species was found. Anthropogenic activities can increase peat fires and cause substantial hydrology changes. Our data suggest that increased human fire activity was one of the main factors that influenced peatland hydrology, though the mire response through hydrological changes towards drier conditions was delayed in relation to the surrounding vegetation changes.

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AIM The local delivery of growth factors via gene therapy has gained tremendous awareness in recent years due to their sustained growth factor delivery to target tissues. The aim of this study was to fabricate and investigate a scaffold able to release growth factors via gene therapy for the repair of periodontal tissues. MATERIALS AND METHODS Novel mesoporous bioglass (MBG)/silk fibrin scaffold combined with BMP7 and/or PDGF-B adenovirus was fabricated and tested in vitro for cell migration, proliferation and differentiation. Furthermore, acute-type buccal dehiscence periodontal defects (mesiodistal width × depth: 5 × 5 mm) were created on the buccal portion of the maxillary premolars in five normal male beagle dogs (12 months old, 15.0 ± 2.0 kg) and histologically examined for periodontal regeneration following implantation of the following five groups: (1) no scaffold, (2) MBG/silk scaffold alone, (3) scaffold + adPDGF-B, (4) scaffold + adBMP7, (5) scaffold + adPDGF-b + adBMP7. RESULTS In vitro findings demonstrated that adPDGF-B was able to rapidly recruit periodontal ligament (PDL) cells over sixfold more effectively than adBMP7, whereas adBMP7 was more able to induce osteoblast differentiation of PDL cells. In vivo findings demonstrate that scaffolds loaded with adPDGF-B were able to partially regenerate the periodontal ligament while adBMP7 scaffolds primarily improved new bone formation. The combination of both adPDGF-B and adBMP7 synergistically promoted periodontal regeneration by allowing up to two times greater regeneration of the periodontal ligament, alveolar bone and cementum when compared to each adenovirus used alone. CONCLUSIONS Although both PDGF-B and BMP7 are individually capable of promoting periodontal regeneration to some degree, their combination synergistically promotes wound healing in acute-type buccal dehiscence periodontal defects when delivered simultaneously. This study demonstrates the promise for successful delivery of low-cost, effective growth factor delivery via gene therapy for the treatment of periodontal defects.

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Metaplastic breast carcinoma (MBC) is a rare histological breast cancer subtype characterized by mesenchymal elements and poor clinical outcome. A large fraction of MBCs harbor defects in breast cancer 1 (BRCA1). As BRCA1 deficiency sensitizes tumors to DNA cross-linking agents and poly(ADP-ribose) polymerase (PARP) inhibitors, we sought to investigate the response of BRCA1-deficient MBCs to the PARP inhibitor olaparib. To this end, we established a genetically engineered mouse model (GEMM) for BRCA1-deficient MBC by introducing the MET proto-oncogene into a BRCA1-associated breast cancer model, using our novel female GEMM ES cell (ESC) pipeline. In contrast to carcinomas, BRCA1-deficient mouse carcinosarcomas resembling MBC show intrinsic resistance to olaparib caused by increased P-glycoprotein (Pgp) drug efflux transporter expression. Indeed, resistance could be circumvented by using another PARP inhibitor, AZD2461, which is a poor Pgp substrate. These preclinical findings suggest that patients with BRCA1-associated MBC may show poor response to olaparib and illustrate the value of GEMM-ESC models of human cancer for evaluation of novel therapeutics.

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Welsch (Projektbearbeiter): Das Ziel der Wohlfahrt des Volkes kann nicht durch blinden Parteienkampf erreicht werden. Aufruf zur gegenseitigen Verständigung an die ministerielle und die antiministerielle Fraktion und zur Abstimmung nach Vernunftgründen statt nach fraktioneller Zugehörigkeit. Der Ehre der Volksvertretung läuft es zuwider, unter den Bedingungen des Belagerungszustandes mit der Regierung zu verhandeln

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Welsch (Projektbearbeiter): Ablehnung der für den 6. August 1848 geplanten Huldigung des preußischen Militärs vor dem Reichsverweser. Diesem stünde es besser an, seinerseits vor dem Monument des Großen Kurfürsten zu huldigen. " ... seit den Ollen Fritzen seine Zeit is des Preußsche Milletär des ausländsche Huldjen nich mehr jewohne". Die Einigung Deutschlands ist ohne Preußen nicht zu denken, Österreich dagegen ist diesem Prozeß eher hinderlich

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Welsch (Projektbearbeiter): Cäsar Wenzel Messenhauser gibt seine Ernennung zum provisorischen Oberkommandanten der Nationalgarde bekannt. Aufruf zu Friede, Ordnung, Achtung des Gesetzes sowie zur Verteidigung des "constitutionellen Thrones unter dem Banner volksthümlicher Freiheit"

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FTY720 sequesters lymphocytes in secondary lymphoid organs through effects on sphingosine-1-phosphate (S1P) receptors. However, at higher doses than are required for immunosuppression, FTY720 also functions as an anticancer agent in multiple animal models. Our published work indicates that the anticancer effects of FTY720 do not depend on actions at S1P receptors but instead stem from FTY720s ability to restrict access to extracellular nutrients by down-regulating nutrient transporter proteins. This result was significant because S1P receptor activation is responsible for FTY720s dose-limiting toxicity, bradycardia, that prevents its use in cancer patients. Here, we describe diastereomeric and enantiomeric 3- and 4-C-aryl 2-hydroxymethyl pyrrolidines that are more active than the previously known analogues. Of importance is that these compounds fail to activate S1P1 or S1P3 receptors in vivo but retain inhibitory effects on nutrient transporter proteins and anticancer activity in solid tumor xenograft models. Our studies reaffirm that the anticancer activity of FTY720 does not depend upon S1P receptor activation and uphold the promise of using S1P receptor-inactive azacyclic FTY720 analogues in human cancer patients.

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Welsch (Projektbearbeiter): Heftige, in der Form einer Unterhaltung zwischen drei Berlinern geäußerte Kritik an der Bürgerwehr sowie an den Konstabler-Schutzmannschaften wegen ihres rücksichtslosen Vorgehens gegen die Zivilbevölkerung. Forderung nach Entwaffnung der Bürgerwehr durch das Militär

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Welsch (Projektbearbeiter): Satirische Anspielung auf die Vielzahl von Nachtdiensten und ihre Auswirkungen auf das Zivil- und Familienleben der Berliner Bürgerwehrmänner: Erlaß von zehn Geboten durch die Ehefrauen zur Verhinderung von Seitensprüngen. Mit teilweise schlüpfrigem Inhalt

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Welsch (Projektbearbeiter): Karikatur (aus konservativer Sicht) auf die Präponderanz der unterbürgerlichen Schichten als Träger der Revolution: "... uns Lumpen gehört die Zukunft!"

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Welsch (Projektbearbeiter): Gardinenpredigt an die Adresse der Rechten in der Preußischen Nationalversammlung. Nach dem Vorbild der Kapuzinerpredigt in Schillers 'Wallensteins Lager'