173 research outputs found
Aus 34 Jahren Luftfahrt
AUS 34 JAHREN LUFTFAHRT
Aus 34 Jahren Luftfahrt / Tschudi, Georg von (Public Domain) ( - )
Cover front ( - )
Dedication ( - )
Abbildung: Der Verfasser 1906, als er in marokkanische Dienste trat ( - )
Title page ( - )
Contents ( - )
Einleitung ([7])
1. Bei der Luftschiffer-Abteilung ([11])
Abbildung: Die Offiziere der Luftschiffer-Abteilung 1894-1895 ( - )
Abbildung: Die Offiziere der Luftschiffer-Abteilung 1898 ( - )
2. KompagniefĂŒhrer in der Luftschiffer-Abteilung (22)
Abbildung: Parademarsch der Luftschiffer Ende vorigen Jahrhunderts ( - )
Abbildung: Luftschiffer-Offiziere aus der Vogelschau ( - )
3. Erfinder (29)
4. Luftschiffe (31)
5. Das Aluminium-Luftschiff von David Schwarz (34)
6. Zeppelin-Luftschiffe (37)
Abbildung: Graf Zeppelin ( - )
Abbildung: Das erste Zeppelin Luftschiff 1900 ( - )
7. Andrees Besuch bei der Luftschiffer-Abteilung (44)
8. Das erste MilitÀrmotorfahrzeug (47)
9. Die ersten Ballonverfolgungen (48)
Abbildung: Otto Lilienthal ( - )
Abbildung: Lilienthal-Denkmal in Lichterfelde ( - )
Abbildung: Lilienthal im Gleitflug vom HĂŒgel bei Lichterfelde 1894 ( - )
Abbildung: Der Drachen-Fesselballon ( - )
10. Eine Ballonfahrt mit Segel (50)
11. Ballonfahrt nach RuĂland (51)
12. Ballonfahrten im Gewitter (55)
13. Der Zekeli-Ballon (56)
Abbildungen: Das bewegliche Bremserhaus ( - )
Abbildung: Der Aufstieg zur höchsten Fahrt ( - )
14. Der Todestag von Hans Bartsch von Sigsfeld (61)
15. Lehrer im Luftschifferbataillon, FĂŒhrer des Funkentelegraphie-Versuchskommandos (64)
Abbildung: Das Denkmal fĂŒr Bartsch v. Sigsfeld frĂŒher in der Jungfernheide, jetzt am Schöneberger Ufer, Berlin ( - )
Abbildung: Haus Bartsch v. Sigsfeld ( - )
16. Besuche in England (72)
Abbildung: Funkenstation in SĂŒdwest-Afrika 1905 ( - )
Abbildung: Fahrbare Funkenstation 1905 ( - )
17. Die Weltausstellung St. Louis 1904 (76)
Abbildung: Ballon "Berson" und der höchstgeflogene Ballonkorb auf der Weltausstellung St. Louis 1904 ( - )
Abbildung: Fesselballon auf der Weltausstellung St. Louis 1904 ( - )
Abbildung: Gleitflugzeug von Chanute, St. Louis 1904 ( - )
Abbildungen: Zeppelin-Luftschiff auf der Ila ; Graf Zeppelin und OberbĂŒrgermeister Adickes (x), Frankfurt a. M., auf der Ila 1909 ( - )
18. Marokko (83)
19. Die ILA 1909 (87)
Abbildung: Ila, Frankfurt a. M. 1909 ( - )
Abbildung: Freiballonfahrt des PrĂ€sidiums der Ila von links n. rechts: v. Tschudi (FĂŒhrer), Adickes, Varrentrap, Gans ( - )
20. Mit dem Grafen Zeppelin ins Kaisermanöver 1909 (94)
Abbildung: Ballon-Aufstiege auf der Ila 1909 ( - )
Abbildung: Die "Ila": Internationale Luftfahrt-Ausstellung Frankfurt a. M. 1909 ( - )
Abbildungen: P. L. III. auf der Ila 1909 ; Clouth-Luftschiff auf der Ila 1909 ( - )
Abbildungen: Gondel des Clouth-Luftschiffs ; Luftschiff Ruthenberg auf der Ila 1909 ( - )
21. Das Parsevalluftschiff (P. L. III) auf der ILA (98)
22. Deutsche Luftschiffbauten verschiedener Art (100)
Abbildung: Die abwerfbare Gondel des Luftschiffes Suchard ( - )
Abbildung: Antriebsanlage am Luftschiff Wisniewski 1914 ( - )
23. Johannisthal (105)
Abbildungen: Das Parseval-Luftschiff "Stollwerck" in Johannisthal ; Siemens-Schuckert Vorkriegsluftschiff ( - )
Abbildungen: Das Siemens-Schuckert-Luftschiff ; Vorkriegs-MilitÀrluftschiff, System Basenach ( - )
Abbildungen: Das erste SchĂŒtte-Lanz-Luftschiff ; Flugtag in Johannisthal ( - )
Abbildungen: Altmodisches Flugzeug (Wright) ( - )
24. Der deutsche Rundflug 1911 (125)
Abbildungen: Vorkriegsflugzeug der Deutschen Flugzeugwerke ; Die "Möve" von Dr. Geest, Vorkriegsflugzeug ( - )
Abbildungen: Rumpler-Vorkriegsflugzeug ; Albatros-Vorkriegsflugzeug ( - )
25. Das erste Flugrennen (129)
26. PĂ©goud in Johannisthal (132)
27. Luftjuristisches (136)
Abbildungen: Grade-Vorkriegsflugzeug ; Etrich-Taube, Vorkriegsflugzeug ( - )
Abbildungen: Dorner-Vorkriegsflugzeug ; Ago-Vorkriegsflugzeug ( - )
28. Das Luftfahrtvereinswesen (141)
29. Flugplatzinteressen und Luftfahrerverband (156)
30. Die Fédération Aéronautique Internationale (161)
31. Im Kriege (166)
32. Kleine Ursachen, groĂe Wirkungen (174)
33. Nachkriegszeit (176)
Abbildungen: Bequemes Maschinengewehr ( - )
Abbildung: Empfang Dr. Eckeners im Aero-Club von Deutschland nach seiner Amerikafahrt ( - )
Verzeichnis der Abbildungen ( - )
Cover back ( - )
ColorChart ( -
Cell type-specific expression and localization of cytochrome P450 isoforms in tridimensional aggregating rat brain cell cultures.
Within the Predict-IV FP7 project a strategy for measurement of in vitro biokinetics was developed, requiring the characterization of the cellular model used, especially regarding biotransformation, which frequently depends on cytochrome P450 (CYP) activity. The extrahepatic in situ CYP-mediated metabolism is especially relevant in target organ toxicity. In this study, the constitutive mRNA levels and protein localization of different CYP isoforms were investigated in 3D aggregating brain cell cultures. CYP1A1, CYP2B1/B2, CYP2D2/4, CYP2E1 and CYP3A were expressed; CYP1A1 and 2B1 represented almost 80% of the total mRNA content. Double-immunolabeling revealed their presence in astrocytes, in neurons, and to a minor extent in oligodendrocytes, confirming the cell-specific localization of CYPs in the brain. These results together with the recently reported formation of an amiodarone metabolite following repeated exposure suggest that this cell culture system possesses some metabolic potential, most likely contributing to its high performance in neurotoxicological studies and support the use of this model in studying brain neurotoxicity involving mechanisms of toxication/detoxication
Tollip, an early regulator of the acute inflammatory response in the substantia nigra.
Tollip is a ubiquitously expressed protein, originally described as a modulator of the IL-1R/TLR-NF-ÎșB signaling pathways. Although this property has been well characterized in peripheral cells, and despite some evidence of its expression in the central nervous system, the role of Tollip in neuroinflammation remains poorly understood. The present study sought to explore the implication of Tollip in inflammation in the substantia nigra pars compacta, the structure affected in Parkinson's disease.
We first investigated Tollip distribution in the midbrain by immunohistochemistry. Then, we addressed TLR4-mediated response by intra-nigral injections of lipopolysaccharide (LPS), a TLR4 agonist, on inflammatory markers in Tollip knockout (KO) and wild-type (WT) mice.
We report an unexpectedly high Tollip immunostaining in dopaminergic neurons of the mice brain. Second, intra-nigral injection of LPS led to increased susceptibility to neuroinflammation in Tollip KO compared to Tollip WT mice. This was demonstrated by a significant increase of tumor necrosis factor alpha (TNF-α), interleukin 1 beta (IL-1ÎČ), interleukin 6 (IL-6), and interferon gamma (IFN-Îł) messenger RNA (mRNA) in the midbrain of Tollip KO mice upon LPS injection. Consistently, brain rAAV viral vector transduction with a nuclear factor kappa B (NF-ÎșB)-inducible reporter gene confirmed increased NF-ÎșB activation in Tollip KO mice. Lastly, Tollip KO mice displayed higher inducible NO synthase (iNOS) production, both at the messenger and protein level when compared to LPS-injected WT mice. Tollip deletion also aggravated LPS-induced oxidative and nitrosative damages, as indicated by an increase of 8-oxo-2'-deoxyguanosine and nitrotyrosine immunostaining, respectively.
Altogether, these findings highlight a critical role of Tollip in the early phase of TLR4-mediated neuroinflammation. As brain inflammation is known to contribute to Parkinson's disease, Tollip may be a potential target for neuroprotection
Managing Performance Throughout Periods of Travel
Understanding the impact of travel on physical performance is an increasing area of interest for the strength and conditioning practitioner. Previous research surrounding the effect of travel on the physiology of an athlete has focused on sleep. Of concern to coaches and athletes are strategies to help attenuate any detrimental impact of travel on subsequent performance. The aim of this article is to provide informative practical guidelines for before, during, and after travel that can be implemented by coaches and athletes. The key coping strategies addressed include timed light exposure; managing sleep deprivation and nutritional recommendations
Phase II Evaluation of Sensitivity and Specificity of PCR and NASBA Followed by Oligochromatography for Diagnosis of Human African Trypanosomiasis in Clinical Samples from D.R. Congo and Uganda
Diagnosis plays a central role in the control of human African trypanosomiasis (HAT) whose mainstay in disease control is chemotherapy. However, accurate diagnosis is hampered by the absence of sensitive techniques for parasite detection. Without concentrating the blood, detection thresholds can be as high as 10,000 trypanosomes per milliliter of blood. The polymerase chain reaction (PCR) and nucleic acid sequence-based amplification (NASBA) are promising molecular diagnostics that generally yield high sensitivity and could improve case detection. Recently, these two tests were coupled to oligochromatography (OC) for simplified and standardized detection of amplified products, eliminating the need for electrophoresis. In this study, we evaluated the diagnostic accuracy of these two novel tests on blood specimens from HAT patients and healthy endemic controls from D.R. Congo and Uganda. Both tests exhibited good sensitivity and specificity compared to the current diagnostic tests and may be valuable tools for sensitive and specific parasite detection in clinical specimens. These standardized molecular test formats open avenues for improved case detection, particularly in epidemiological studies and in disease diagnosis at reference centres
A invenção como ofĂcio: as mĂĄquinas de preparo e benefĂcio do cafĂ© no sĂ©culo XIX
The article studies the Brazilian coffee-growing society from the point of view of the generation of inventions and machine innovations aimed at the preparation and processing of coffee beans in the period between 1860 and 1882. Under the protection of the 1830 Patents Law, the machinistas developed their inventions and submitted them to the National Industry Auxiliary Society (Sociedade Auxiliadora da IndĂșstria Nacional - SAIN) for the concession of industrial privilege and later manufacture and commercialization. It is demonstrated how the coffee machinery developed by these inventors-entrepreneurs in Brazil brought to the slave-labour coffee plantation the technological update of agricultural machines existing in the industrial countries and how that has propitiated an improvement in the quality of large-scale coffee bean processing. This fact has made possible not only the consolidation of the country as the largest exporter in the international market, but has also has allowed for changes in the productive structure of the slave-labour plantations.Aborda-se a sociedade cafeeira brasileira sob o aspecto da geração de invençÔes e inovaçÔes de mĂĄquinas destinadas ao preparo e benefĂcio do cafĂ© no perĂodo de 1860 a 1882. Sob a proteção da Lei de Patentes de 1830, os machinistas desenvolviam seus inventos, que eram examinados pela Sociedade Auxiliadora da IndĂșstria Nacional (SAIN) para concessĂŁo do privilĂ©gio industrial e posterior fabricação e comercialização. Demonstra-se como as mĂĄquinas de cafĂ© desenvolvidas por estes inventores-empresĂĄrios no Brasil trouxeram para a fazenda cafeeira escravista a atualização tecnolĂłgica de mĂĄquinas agrĂcolas existentes nos paĂses industriais e propiciaram uma melhoria de qualidade do benefĂcio em grandes quantidades de cafĂ©. Tal fato tornou possĂvel nĂŁo sĂł a consolidação do paĂs como maior exportador no mercado internacional, mas permitiu alteraçÔes na estrutura produtiva das fazendas escravistas
Endothelial dysfunction and vascular disease
The endothelium can evoke relaxations (dilatations) of the underlying vascular smooth muscle, by releasing vasodilator substances. The best characterized endothelium-derived relaxing factor (EDRF) is nitric oxide (NO). The endothelial cells also evoke hyperpolarization of the cell membrane of vascular smooth muscle (endothelium-dependent hyperpolarizations, EDHF-mediated responses). Endothelium-dependent relaxations involve both pertussis toxin-sensitive G i (e.g. responses to serotonin and thrombin) and pertussis toxin-insensitive G q (e.g. adenosine diphosphate and bradykinin) coupling proteins. The release of NO by the endothelial cell can be up-regulated (e.g. by oestrogens, exercise and dietary factors) and down-regulated (e.g. oxidative stress, smoking and oxidized low-density lipoproteins). It is reduced in the course of vascular disease (e.g. diabetes and hypertension). Arteries covered with regenerated endothelium (e.g. following angioplasty) selectively loose the pertussis toxin-sensitive pathway for NO release which favours vasospasm, thrombosis, penetration of macrophages, cellular growth and the inflammatory reaction leading to atherosclerosis. In addition to the release of NO (and causing endothelium-dependent hyperpolarizations), endothelial cells also can evoke contraction (constriction) of the underlying vascular smooth muscle cells by releasing endothelium-derived contracting factor (EDCF). Most endothelium-dependent acute increases in contractile force are due to the formation of vasoconstrictor prostanoids (endoperoxides and prostacyclin) which activate TP receptors of the vascular smooth muscle cells. EDCF-mediated responses are exacerbated when the production of NO is impaired (e.g. by oxidative stress, ageing, spontaneous hypertension and diabetes). They contribute to the blunting of endothelium-dependent vasodilatations in aged subjects and essential hypertensive patients. © 2008 Scandinavian Physiological Society.postprin
State of the climate in 2013
In 2013, the vast majority of the monitored climate variables reported here maintained trends established in recent decades. ENSO was in a neutral state during the entire year, remaining mostly on the cool side of neutral with modest impacts on regional weather patterns around the world. This follows several years dominated by the effects of either La Niña or El Niño events. According to several independent analyses, 2013 was again among the 10 warmest years on record at the global scale, both at the Earths surface and through the troposphere. Some regions in the Southern Hemisphere had record or near-record high temperatures for the year. Australia observed its hottest year on record, while Argentina and New Zealand reported their second and third hottest years, respectively. In Antarctica, Amundsen-Scott South Pole Station reported its highest annual temperature since records began in 1957. At the opposite pole, the Arctic observed its seventh warmest year since records began in the early 20th century. At 20-m depth, record high temperatures were measured at some permafrost stations on the North Slope of Alaska and in the Brooks Range. In the Northern Hemisphere extratropics, anomalous meridional atmospheric circulation occurred throughout much of the year, leading to marked regional extremes of both temperature and precipitation. Cold temperature anomalies during winter across Eurasia were followed by warm spring temperature anomalies, which were linked to a new record low Eurasian snow cover extent in May. Minimum sea ice extent in the Arctic was the sixth lowest since satellite observations began in 1979. Including 2013, all seven lowest extents on record have occurred in the past seven years. Antarctica, on the other hand, had above-average sea ice extent throughout 2013, with 116 days of new daily high extent records, including a new daily maximum sea ice area of 19.57 million km2 reached on 1 October. ENSO-neutral conditions in the eastern central Pacific Ocean and a negative Pacific decadal oscillation pattern in the North Pacific had the largest impacts on the global sea surface temperature in 2013. The North Pacific reached a historic high temperature in 2013 and on balance the globally-averaged sea surface temperature was among the 10 highest on record. Overall, the salt content in nearsurface ocean waters increased while in intermediate waters it decreased. Global mean sea level continued to rise during 2013, on pace with a trend of 3.2 mm yr-1 over the past two decades. A portion of this trend (0.5 mm yr-1) has been attributed to natural variability associated with the Pacific decadal oscillation as well as to ongoing contributions from the melting of glaciers and ice sheets and ocean warming. Global tropical cyclone frequency during 2013 was slightly above average with a total of 94 storms, although the North Atlantic Basin had its quietest hurricane season since 1994. In the Western North Pacific Basin, Super Typhoon Haiyan, the deadliest tropical cyclone of 2013, had 1-minute sustained winds estimated to be 170 kt (87.5 m s-1) on 7 November, the highest wind speed ever assigned to a tropical cyclone. High storm surge was also associated with Haiyan as it made landfall over the central Philippines, an area where sea level is currently at historic highs, increasing by 200 mm since 1970. In the atmosphere, carbon dioxide, methane, and nitrous oxide all continued to increase in 2013. As in previous years, each of these major greenhouse gases once again reached historic high concentrations. In the Arctic, carbon dioxide and methane increased at the same rate as the global increase. These increases are likely due to export from lower latitudes rather than a consequence of increases in Arctic sources, such as thawing permafrost. At Mauna Loa, Hawaii, for the first time since measurements began in 1958, the daily average mixing ratio of carbon dioxide exceeded 400 ppm on 9 May. The state of these variables, along with dozens of others, and the 2013 climate conditions of regions around the world are discussed in further detail in this 24th edition of the State of the Climate series. é 2014, American Meteorological Society. All rights reserved
Measurement of the top-quark mass in ttÂŻ events with dilepton final states in pp collisions at âs = 7 TeV
Open Access: This article is distributed under the terms of the Creative Commons Attribution License.-- Chatrchyan, S. et al.The top-quark mass is measured in proton-proton collisions at sâ=7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fbâ1 collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel ttÂŻâ(â+Îœâb)(ââÎœÂŻÂŻâbÂŻ), where â=e,ÎŒ. Candidate top-quark decays are selected by requiring two leptons, at least two jets, and imbalance in transverse momentum. The mass is reconstructed with an analytical matrix weighting technique using distributions derived from simulated samples. Using a maximum-likelihood fit, the top-quark mass is determined to be 172.5±0.4 (stat.)±1.5 (syst.) GeV.Acknowledge support from BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France);BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEP, IPST and NECTEC (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Austrian Science Fund (FWF); the Belgian Federal Science Policy Office; the Fonds pour la Formation Ă la Recherche dans lâIndustrie et dans lâAgriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWTBelgium); the Ministry of Education, Youth and Sports (MEYS) of Czech Republic; the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); and the HOMING PLUS program of Foundation for Polish Science, cofinanced from European Union, Regional Development Fund.Peer Reviewe
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