609 research outputs found
Pilot Hubner and von Cavallar in a Lloyd C.II airplane
No full textCaptain Hubner and von Cavallar seated in an Austro-Hungarian Lloyd C.II airplane in starboard side view. Image displayed (72 dpi JPEG), Master image (600 dpi TIFF)
Spectral diffusion of single InP/GaxIn1-xP quantum dot luminescence
No full textHigh spatial resolution photoluminescence spectroscopy of single self-assembled InP quantum dots in a Ga0.5In0.5P matrix reveal an abrupt change from the common but yet unclear broad emission band at low temperatures to narrow lines at T greater than or equal to 45 K. The emission into narrow lines even at higher temperatures is the expected behaviour for a fully confined quantum system. The spectrally broad emission (several meV) from individual quantum dots at low temperatures is explained by fluctuating charge configurations surrounding the quantum dot and causing spectral diffusion of the transition energies via the quantum-confined Stark effect. The interacting charges are trapped by thickness variations in the surrounding wetting layer. At higher temperatures these traps are depleted due to the shift of the Fermi level E-F below the energy of the corresponding states in the wetting layer
Temperature-dependent linewidth of single InP/GaxIn1-xP quantum dots: Interaction with surrounding charge configurations
No full textWe have investigated individual metal-organic vapor phase epitaxy-grown self-assembled InP quantum-dots in a Ga0.5In0.5P matrix by means of photoluminescence with high spatial resolution as a function of temperature and excitation density. We observe an abrupt change from the well-known but yet unclear relatively broad emission band at low temperatures to narrow lines at T greater than or equal to 45 K. The high-temperature mode is the one expected for a fully confined quantum system. The ubiquitous broadening at low temperature is discussed in the framework of spectral diffusion, i.e., fluctuating charge configurations surrounding the quantum dot influence its transition energies. We conclude that the interacting charges are most probably trapped in connection with thickness variation in the wetting,a layer. Their release at higher temperatures removes the perturbation and leads to the expected appearance of sharp single dot spectra
Pentas Observationum Anatomico-Physiologicarum
No full textFrankfurt/Oder, Univ., Med. Diss., 1743Enth. 3 Gedichte der BeiträgerAutopsie nach Ex. der ULB Sachsen-AnhaltVorlageform des Erscheinungsvermerks: Francofurti ad Viadrvm Typis Martini Hubneri
Sexual Dimorphism in Neutral Lipid Metabolism in the Indian-Meal Moth, Plodia Interpunctella (Hubner)
No full textAuthor Institution: Department of Biology, Millersville State College, Millersville, PennsylvaniaOf last larval instar Indian-meal moths, Plodia interpunctella (Hubner), males contain slightly more total neutral lipid per gram live weight than do females. The qualitative composition of the various neutral fractions is similar in both sexes. During the pupal period, the female catabolizes considerably more triglyceride than the male, resulting in a much lower triglyceride content in the newly emerged adult female. There is an almost equal rate of lipid utilization in both sexes during the first three days of adult life
Parasemia Hubner 1823
No full text<i>PARASEMIA</i> HÜBNER, 1823 <p> Type species: <i>Parasemia agnitaria</i> Hübner, 1823. Brazil. [Junior homonym of <i>Parasemia</i> Hübner, [1820] 1816 (Lepidoptera: Arctiidae).]</p> <p> <i>Taxonomic status.</i> There is no replacement name for this junior homonym. Fletcher (1979: 189) stated that the type species <i>P. agnitaria</i> is congeneric with <i>Semiothisa gambaria</i> Hübner, the type species of <i>Semiothisa</i>. This suggestion is reasonable if <i>Semiothisa</i> is understood in the very broad sense in which it has often been used. In the restricted sense we have defined it in the present study, however, the colour</p>Published as part of <i>Scoble, Malcolm J. & Krüger, Martin, 2002, A review of the genera of Macariini with a revised classification of the tribe (Geometridae: Ennominae), pp. 257-315 in Zoological Journal of the Linnean Society 134 (3)</i> on page 311, DOI: 10.1046/j.1096-3642.2002.00008.x, <a href="http://zenodo.org/record/5434168">http://zenodo.org/record/5434168</a>
Correlation between hearing impairment risk and exposure to noise. Present level of research. Industrial Health and Safety. EUR 7874 EN
No full textErratum: "Random and block copolymers based on 4-methyl-1-pentene and 1-pentene" (Polymer (2012) 53 (3096-3106))
No full textRandom and block copolymers based on 4-methyl-1-pentene and 1-pentene
No full textThe zirconium acetamidinate catalyst {Cp*Zr(Me)2[N(Et)C(Me)N(tBu)]} (Cp* = ŋ5-C5Me5) was used to synthesize both random and block copolymers based on 4-methyl-1-pentene (4M1P) and 1-pentene. The polymers have been characterized by NMR spectroscopy, SEC, DSC, high temperature HPLC and CRYSTAF. Unexpectedly, the yields and molecular weights decreased with increasing amounts of 1-pentene. The reason for this behavior is that 1-pentene occasionally undergoes 2,1-misinsertions trapping the catalyst in a dormant state. These 2,1-misinsertions do not seem to occur with the bulky 4M1P (branched α-olefin). Adding a small amount of ethylene reactivates the catalyst. Unlike most semi-crystalline polymers, the density of the crystalline phase of isotactic P4M1P can be lower than of the amorphous phase, when crystallized under very high pressures. To characterize this peculiar behavior of 4M1P-based polymers, various samples have been subjected to Pressure-Volume-Temperature (PVT) measurements. While the P4M1P homopolymers and block copolymers show the expected decrease in specific volume upon crystallization, the 4M1P-rich random copolymers proved not to vary in specific volume under the same conditions
Qualité de vie et résultat à court terme après chimiothérapie intra- Peritoneale vaporisée (PIPAC) chez les patients atteints de carcinose péritonéale.
No full textBackground. Peritoneal cancer treatment aims to prolong survival, but preserving Quality of Life (QoL) under treatment is also a priority. Pressurized Intraperitoneal Aerosol Chemotherapy (PIPAC) is a novel minimally invasive repeatable treatment modality. The aim of the present study was to assess QoL in our cohort of PIPAC patients. Methods. Analysis of all consecutive patients included from the start of PIPAC program (January 2015). QoL (0-100: optimal) and symptoms (no symptom: 0-100) were
measured prospectively before and after every PIPAC procedure using EORTC QLQ-C30. Results. Forty-two patients (M :F = 8: 34,
median age 66 (59-73) years) had 91 PIPAC procedures in total (1: 4x, 17: 3x, 12:2x, and 12 : lx). Before first PIPAC, baseline QoL was measured as median of 66 ± 2.64. Prominent complaints were fatigue (32 ± 4.3) and digestive symptoms as diarrhea (17 ± 3.75),
constipation (17 ± 4.13), and nausea (7 ± 2.54). Overall Quality of Life was 64 ± 3.75 after PIPAC#l (p = 0.57), 61 ± 4.76 after
PIPAC#2 (p = 0.89), and 70 ± 6.67 after PIPAC#3 (p = 0.58). Fatigue symptom score was 44 ± 4.86 after PIPAC#l and 47 ± 6.69
and 34 ± 7.85 after second and third applications, respectively (p = 0.40). Diarrhea (p = 0.31), constipation (p = 0.76), and nausea (p = 0.66) did not change significantly under PIPAC treatment. Conclusion. PIPAC treatment of peritoneal carcinomatosis had no negative impact on patients' overall QoL and its components or on main symptoms. This study was registered online on Research Registry (UIN: 1608)
- …
