Auswahl der wissenschaftlichen Literatur zum Thema „W 32.5 fe5“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Inhaltsverzeichnis
Machen Sie sich mit den Listen der aktuellen Artikel, Bücher, Dissertationen, Berichten und anderer wissenschaftlichen Quellen zum Thema "W 32.5 fe5" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Zeitschriftenartikel zum Thema "W 32.5 fe5"
1
Yuan, Xue, Sun Ningyue, Li Guowu und Yang Guangming. „Hydroplumboelsmoreite, (Pb1□1)Σ2(W1.33Fe3+0.67)Σ2O6(H2O), a redefined mineral species of the elsmoreite group from China“. Mineralogical Magazine 85, Nr. 6 (Dezember 2021): 890–900. http://dx.doi.org/10.1180/mgm.2021.86.
Der volle Inhalt der QuelleAnnotation:
AbstractHydroplumboelsmoreite (IMA21-C), (Pb,□)2(W,Fe3+)2O6(H2O), is a redefined elsmoreite-group mineral in the pyrochlore supergroup. It was found in a ‘jixianite’ cotype specimen provided by Mr. Liu Jianchang, who first found ‘jixianite’ in 1979 in the Jizhou District, Tianjin City, China. The mineral occurs as yellow to reddish brown aggregates, together with raspite and another elsmoreite-group mineral under study. Hydroplumboelsmoreite occurs in cryptocrystalline form and occasionally in octahedral microcrystalline form (under 20 μm in size). The crystals are colourless and translucent with a white streak, and the lustre is adamantine to greasy. Hydroplumboelsmoreite is isotropic, with a calculated refractive index of 2.29, a Mohs hardness of ~4½–5, and a calculated density of 7.47 g⋅cm−3. The strongest five powder X-ray diffraction lines [d in Å(I)(hkl)] are 6.070(28)(111), 3.012(100)(222), 2.603(32)(004), 1.836(35)(044) and 1.568(30)(226). The crystal structure was refined to R1 = 0.0459 using 80 unique reflections collected with MoKα radiation, and the results show that the mineral is cubic, space group Fd$\bar{3}$m, with a = 10.3377(5) Å, V = 1104.77(16) Å3 and Z = 8. Electron microprobe analyses and crystal structure refinement were used to determine the empirical formula: (Pb1.05Sr0.05Ce3+0.07Na0.01□0.82)Σ2.00(W1.32Fe3+0.67Zr0.01)Σ2.00O6[(H2O)0.43O0.19□0.38]Σ1.00. The mineral was named hydroplumboelsmoreite based on the predominance of Pb, W, and molecular H2O in the A, B and Y sites, respectively.
2
Ohira, Itaru, Jennifer M. Jackson, Natalia V. Solomatova, Wolfgang Sturhahn, Gregory J. Finkelstein, Seiji Kamada, Takaaki Kawazoe et al. „Compressional behavior and spin state of δ-(Al,Fe)OOH at high pressures“. American Mineralogist 104, Nr. 9 (01.09.2019): 1273–84. http://dx.doi.org/10.2138/am-2019-6913.
Der volle Inhalt der QuelleAnnotation:
Abstract Hydrogen transport from the surface to the deep interior and distribution in the mantle are important in the evolution and dynamics of the Earth. An aluminum oxy-hydroxide, δ-AlOOH, might influence hydrogen transport in the deep mantle because of its high stability extending to lower mantle conditions. The compressional behavior and spin states of δ-(Al,Fe3+)OOH phases were investigated with synchrotron X-ray diffraction and Mössbauer spectroscopy under high pressure and room temperature. Pressure-volume (P-V) profiles of the δ-(Al0.908(9)57Fe0.045(1))OOH1.14(3) [Fe/(Al+Fe) = 0.047(10), δ-Fe5] and the δ-(Al0.832(5)57Fe0.117(1))OOH1.15(3) [Fe/(Al+Fe) = 0.123(2), δ-Fe12] show that these hydrous phases undergo two distinct structural transitions involving changes in hydrogen bonding environments and a high- to low-spin crossover in Fe3+. A change of axial compressibility accompanied by a transition from an ordered (P21nm) to disordered hydrogen bond (Pnnm) occurs near 10 GPa for both δ-Fe5 and δ-Fe12 samples. Through this transition, the crystallographic a and b axes become stiffer, whereas the c axis does not show such a change, as observed in pure δ-AlOOH. A volume collapse due to a transition from high- to low-spin states in the Fe3+ ions is complete below 32–40 GPa in δ-Fe5 and δ-Fe12, which i ~10 GPa lower than that reported for pure ε-FeOOH. Evaluation of the Mössbauer spectra of δ-(Al0.824(10)57Fe0.126(4))OOH1.15(4) [Fe/(Al+Fe) = 0.133(3), δ-Fe13] also indicate a spin transition between 32–45 GPa. Phases in the δ-(Al,Fe)OOH solid solution with similar iron concentrations as those studied here could cause an anomalously high ρ/νΦ ratio (bulk sound velocity, defined as K/ρ at depths corresponding to the spin crossover region (~900 to ~1000 km depth), whereas outside the spin crossover region a low ρ/νΦ anomaly would be expected. These results suggest that the δ-(Al,Fe)OOH solid solution may play an important role in understanding the heterogeneous structure of the deep Earth.
3
Hummel, Karl-Martin, Jürgen Krüger, Hansmartin Schwarzmaier und Udo Wennemuth. „Rezension von: Krüger, Jürgen; Schwarzmaier, Hansmartin; Wennemuth, Udo (Hrsg.), Das evangelische Pfarrhaus im deutschsprachigen Südwesten“. Zeitschrift für Württembergische Landesgeschichte 74 (22.03.2022): 447–48. http://dx.doi.org/10.53458/zwlg.v74i.2204.
Der volle Inhalt der QuelleAnnotation:
Jürgen Krüger / Hansmartin Schwarzmaier / Udo Wennemuth (Hg.), Das evangelische Pfarrhaus im deutschsprachigen Südwesten (Oberrheinische Studien, Bd. 32), Ostfildern: Jan Thorbecke Verlag 2014. 388 S. mit 32 Farbtafeln und 17 s/w Abb. ISBN 978-3-7995-7832-5. € 34,–
4
Zapała, Adam. „Geneza kazań Jana Frankensteina scio quid faciam“. Nasza Przeszłość 122 (30.12.2014): 15–32. http://dx.doi.org/10.52204/np.2014.122.15-32.
Der volle Inhalt der QuelleAnnotation:
W bibliotece Uniwersytetu Wrocławskiego przechowywany jest rękopis BUWr I Q 377, zawierający kolekcję przykładowych kazań Jana Frankensteina, wybitnego piętnastowiecznego intelektualisty, kaznodziei, inkwizytora Wrocławskiego, zaangażowanego w późnośredniowieczny ruch odnowy Kościoła. Choć rękopis ten był wielokrotnie wzmiankowany w historiografii, to jednak duża część kazań w nim zawartych nie doczekała się do tej pory omówienia. Niniejszy artykuł poświęcony jest genezie dwóch spośród rzeczonych kazań. Kazania Scio quid faciam odnoszą się do tego samego tematu i w dużej mierze są tożsame w treści (choć jedno ma 15 stron, drugie zaś tylko 5). Są to kazania przeznaczone na czas zarazy i zawierają rady dotyczące życia i pełnienia posługi duszpasterskiej w zakażonym mieście. Zostały one przygotowane podczas zarazy 1439 roku we Wrocławiu, dla podniesienia poziomu moralnego tamtejszych ojców dominikanów i zapisane w przez Frankensteina jako dwie wersje modelowego tekstu na czas zarazy.
5
Kruppa, Nathalie, Dietmar Schiersner, Volker Trugenberger und Wolfgang Zimmermann. „Rezension von: Schiersner, Dietmar; Trugenberger, Volker; Zimmermann, Wolfgang (Hrsg.), Adelige Damenstifte Oberschwabens in der Frühen Neuzeit“. Zeitschrift für Württembergische Landesgeschichte 72 (07.04.2022): 603–5. http://dx.doi.org/10.53458/zwlg.v72i.2439.
Der volle Inhalt der QuelleAnnotation:
Dietmar Schiersner, Volker Trugenberger und Wolfgang Zimmermann (Hg.): Adelige Damenstifte Oberschwabens in der Frühen Neuzeit. Selbstverständnis, Spielräume, Alltag (Veröffentlichungen der Kommission für geschichtliche Landeskunde in Baden-Württemberg Reihe B: Forschungen, 187. Band). Stuttgart: W. Kohlhammer 2011. IX, 322 S., 12 ganzseitige Farb- und s/w Abb. auf Kunstdrucktafeln, weitere 10 s/w Abb., Register. ISBN 978-3-17-022051-5. € 32,–
6
Radkowski, A., S. Korzeniowski und B. Sas-Korczyńska. „5 Równoczasowa chemioterapia chorych na drobnokomórkowego raka płuc (DKRP) w postaci ograniczonej. Doświadczenia własne w pilotowej grupie 32 chorych“. Reports of Practical Oncology & Radiotherapy 3 (1998): 25. http://dx.doi.org/10.1016/s1507-1367(98)70179-8.
Der volle Inhalt der Quelle
7
van Hoek, Angela H. A. M., Sigrid Mayrhofer, Konrad J. Domig, Ana B. Flórez, Mohammed S. Ammor, Baltasar Mayo und Henk J. M. Aarts. „Mosaic Tetracycline Resistance Genes and Their Flanking Regions in Bifidobacterium thermophilum and Lactobacillus johnsonii“. Antimicrobial Agents and Chemotherapy 52, Nr. 1 (29.10.2007): 248–52. http://dx.doi.org/10.1128/aac.00714-07.
Der volle Inhalt der QuelleAnnotation:
ABSTRACT For the first time, mosaic tetracycline resistance genes were identified in Lactobacillus johnsonii and in Bifidobacterium thermophilum strains. The L. johnsonii strain investigated contains a complex hybrid gene, tet(O/W/32/O/W/O), whereas the five bifidobacterial strains possess two different mosaic tet genes: i.e., tet(W/32/O) and tet(O/W). As reported by others, the crossover points of the mosaic tet gene segments were found at similar positions within the genes, suggesting a hot spot for recombination. Analysis of the sequences flanking these genes revealed that the upstream part corresponds to the 5′ end of the mosaic open reading frame. In contrast, the downstream region was shown to be more variable. Surprisingly, in one of the B. thermophilum strains a third tet determinant was identified, coding for the efflux pump Tet(L).
8
Malicki, J., G. Kosicka, G. Stryczyńska und J. Wachowiak. „32 Porównanie rozkładu dawek w ciele chorego podczas napromienianiania całego ciała w technice radioterapiiCo-60 i akceleratorem X 15 MeV“. Reports of Practical Oncology & Radiotherapy 4, Nr. 4 (1999): 116. http://dx.doi.org/10.1016/s1507-1367(99)70032-5.
Der volle Inhalt der Quelle
9
Boynton, Jason R., Fabian Danner, Paolo Menaspà, Jeremiah J. Peiffer und Chris R. Abbiss. „Effect of Environmental Temperature on High-Intensity Intervals in Well-Trained Cyclists“. International Journal of Sports Physiology and Performance 14, Nr. 10 (01.11.2019): 1401–7. http://dx.doi.org/10.1123/ijspp.2018-0689.
Der volle Inhalt der QuelleAnnotation:
Purpose: To examine the effect of environmental temperature (TA) on performance and physiological responses (eg, body temperature, cardiopulmonary measures) during a high-intensity aerobic interval session. It was hypothesized that power output would be highest in the 13°C condition and lower in the 5°C, 22°C, and 35°C conditions. Methods: Eleven well-trained cyclists randomly completed 4 interval sessions at 5°C, 13°C, 22°C, and 35°C (55% [13%] relative humidity), each involving five 4-min intervals interspersed with 5 min of recovery. During the intervals, power output, core temperature (TC), skin temperature, VO2, and heart rate were recorded. Results: Mean session power output for 13°C (366 [32] W) was not higher than 5°C (363 [32] W; P = 1.00, effect size = 0.085), 22°C (364 [36] W; P = 1.00, effect size = 0.061), or 35°C (352 [31] W; P = .129, effect size = 0.441). The 5th interval of the 35°C condition had a lower power output compared with all other TA. TC was higher in 22°C compared with both 5°C and 13°C (P = .001). VO2 was not significantly different across TA (P = .187). Heart rate was higher in the 4th and 5th intervals of 35°C compared with 5°C and 13°C. Conclusions: This study demonstrates that while mean power outputs for intervals are similar across TA, hot TA (≥35°C) reduces interval power output later in a training session. Well-trained cyclists performing maximal high-intensity aerobic intervals can achieve near-optimal power output over a broader range of TA than previous literature would indicate.
10
Tang, Yulong, Yong Yang und Jianqiu Xu. „High PowerTm3+-Doped Fiber Lasers Tuned by a Variable Reflective Output Coupler“. Research Letters in Optics 2008 (2008): 1–3. http://dx.doi.org/10.1155/2008/919403.
Der volle Inhalt der QuelleAnnotation:
Wide wavelength tuning by a variable reflective output coupler is demonstrated in high-power double-cladTm3+-doped silica fiber lasers diode-pumped at∼790 nm. Varying the output coupling from 96% to 5%, the laser wavelength is tuned over a range of 106 nm from 1949 to 2055 nm. The output power exceeds 20 W over 90-nm range and the maximum output power is 32 W at 1949 nm for 51-W launched pump power, corresponding to a slope efficiency of∼70%. Assisted with different fiber lengths, the tuning range is expanded to 240 nm from 1866 to 2107 nm with the output power larger than 10 W.
Buchteile zum Thema "W 32.5 fe5"
1
Mawson, Chris, und Francesca Bion. „5“. In The Complete Works of W. R. Bion, 278–80. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429327506-32.
Der volle Inhalt der Quelle
2
Mawson, Chris, und Francesca Bion. „5“. In The Complete Works of W. R. Bion, 173–90. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429327513-32.
Der volle Inhalt der Quelle
3
Raul, Debashis. „Analysis of Temperature at Substrate and Sink Area of 5 W COB-Type LEDs, with and Without Driver“. In Lecture Notes in Electrical Engineering, 135–45. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9346-5_11.
Der volle Inhalt der Quelle
4
„5 Noise and vibration R. W. Smith and updated by Terry Bramer“. In Safety at Work, 566–90. Routledge, 2008. http://dx.doi.org/10.4324/9780080557137-32.
Der volle Inhalt der Quelle
5
Chang, Zhaoshan, Qihai Shu und Lawrence D. Meinert. „Chapter 6 Skarn Deposits of China“. In Mineral Deposits of China, 189–234. Society of Economic Geologists, 2019. http://dx.doi.org/10.5382/sp.22.06.
Der volle Inhalt der QuelleAnnotation:
Abstract Skarn deposits are one of the most common deposit types in China. The 386 skarns summarized in this review contain ~8.9 million tonnes (Mt) Sn (87% of China’s Sn resources), 6.6 Mt W (71%), 42 Mt Cu (32%), 81 Mt Zn-Pb (25%), 5.4 Mt Mo (17%), 1,871 tonnes (t) Au (11%), 42,212 t Ag (10%), and ~8,500 Mt Fe ore (~9%; major source of high-grade Fe ore). Some of the largest Sn, W, Mo, and Zn-Pb skarns are world-class. The abundance of skarns in China is related to a unique tectonic evolution that resulted in extensive hydrous magmas and widespread belts of carbonate country rocks. The landmass of China is composed of multiple blocks, some with Archean basements, and oceanic terranes that have amalgamated and rifted apart several times. Subduction and collisional events generated abundant hydrous fertile magmas. The events include subduction along the Rodinian margins, closures of the Proto-Tethys, Paleo-Asian, Paleo-Tethys, and Neo-Tethys Oceans, and subduction of the Paleo-Pacific plate. Extensive carbonate platforms developed on the passive margins of the cratonic blocks during multiple periods from Neoarchean to Holocene also facilitated skarn formation. There are 231 Ca skarns replacing limestone, 15 Ca skarns replacing igneous rocks, siliciclastic sedimentary rocks, or metamorphic silicate rocks, 113 Ca-Mg skarns replacing dolomitic limestone or interlayered dolomite and limestone, and 28 Mg skarns replacing dolomite in China. The Ca and Ca-Mg skarns host all types of metals, as do Mg skarns, except for major Cu and W mineralization. Boron mineralization only occurs in Mg skarns. The skarns typically include a high-temperature prograde stage, iron oxide-rich higher-temperature retrograde stage, sulfide-rich lower-temperature retrograde stage, and a latest barren carbonate stage. The zoning of garnet/pyroxene ratios depends on the redox state of both the causative magma and the wall rocks. In an oxidized magma-reduced wall-rock skarn system, such as is typical of Cu skarns in China, the garnet/pyroxene ratio decreases, and garnet color becomes lighter away from the intrusion. In a reduced intrusion-reduced wall-rock skarn system, such as a cassiterite- and sulfide-rich Sn skarn, the skarn is dominated by pyroxene with minor to no garnet. Manganese-rich skarn minerals may be abundant in distal skarns. Metal associations and endowment are largely controlled by the magma redox state and degree of fractionation and, in general, can be grouped into four categories. Within each category there is spatial zonation. The first category of deposits is associated with reduced and highly fractionated magma. They comprise (1) greisen with Sn ± W in intrusions, grading outward to (2) Sn ± Cu ± Fe at the contact zone, and farther out to (3) Sn (distal) and Zn-Pb (more distal) in veins, mantos, and chimneys. The second category is associated with oxidized and poorly to moderately fractionated magma. Ores include minor porphyry-style Mo and/or porphyry-style Cu mineralization ± Cu skarns replacing xenoliths or roof pendants inside intrusions, zoned outward to major zones of Cu and/or Fe ± Au ± Mo mineralization at the contact with and in adjacent country rocks, and farther out to local Cu (distal) + Zn-Pb (more distal) in veins, mantos, and chimneys. Oxidized and highly fractionated magma is associated with porphyry Mo or greisen W inside an intrusion, outward to Mo and/or W ± Fe ± Cu skarns at the contact zone, and farther to Mo or W ± Cu in distal veins, mantos, and chimneys. The final category is associated with reduced and poorly to moderately fractionated magma. No major skarns of this type have been recognized in China, but outside China there are many examples of such intrusions related to Au-only skarns at the contact zone. Reduced Zn-Au skarns in China are inferred to be distal parts of such systems. Tungsten and Sn do not occur together as commonly as was previously thought. The distal part of a skarn ore system may transition to carbonate replacement deposits. Distal stratabound mantos and crosscutting veins/chimneys may contain not only Zn-Pb but also major Sn, W, Cu, Mo, and Au mineralization. The Zn-Pb mineralization may be part of either an oxidized system (e.g., Cu, Mo, Fe) or a reduced system (e.g., Sn). In China, distal Zn-Pb is more commonly related to reduced magmas. Gold and W may also be related to both oxidized and reduced magmas, although in China they are more typically related to oxidized magma. There are numerous examples of distal mantos/chimneys that continuously transition to proximal skarns at intrusion-wall-rock contact zones, and this relationship strongly supports the magmatic affiliation of such deposits and suggests that distal skarns/carbonate replacement deposits systems should be explored to find more proximal mineralization. Carbonate xenoliths or roof pendants may host the majority of mineralization in some deposits. In contact zones, skarns are better developed where the intrusion shape is complicated. The above two skarn positions imply that there may be multiple skarn bodies below drill interceptions of intrusive rocks. Many of the largest skarns for all commodities in China are related to small or subsurface intrusions (except for Sn skarns), have multiple mineralization centers, are young (<~160 Ma), and have the full system from causative intrusion(s) to distal skarns or carbonate replacement extensions discovered. Chinese skarn deposits fall in several age groups: ~830, ~480 to 420, ~383 to 371, ~324 to 314, ~263 to 210, ~200 to 83, ~80 to 72, and ~65 to 15 Ma. They are typically associated with convergent plate boundaries, mostly in subduction settings but also in collisional settings. Seven major skarn metallogenic belts are recognized based on skarn geographic location and geodynamic background. In subduction settings, skarns may form in a belt up to 4,000 km long and 1,000 km inland, with skarns continuously forming for up to 120 m.y., e.g., the eastern China belt. In most other belts, skarns form in 5- to 20-m.y. episodes similar to the situation in South America. In collisional settings, skarns may form up to 50 m.y. after an ocean closure, and the distance to the collisional/accretionary boundary may extend to ~150 km inland. The size of collision-related skarns may be as large as the largest skarns related to oceanic crust subduction. Older suture zones may be favorable sites for younger mineralization, for example, the Triassic Paleo-Tethys suture between the North and South China blocks for the younger and largest skarn cluster of the Middle-Lower Yangtze belt in the eastern China belt, and the Triassic sutures in southwestern China for Cretaceous to Tertiary mineralization.
6
„Levy, Leonard W. “On the Origins of the Free Press Clause,” U.C.L.A. Law Review 32 (1984), 177-218“. In Pre-Nineteen Sixty Developments in the Bill of Rights Area, 37–79. Routledge, 2014. http://dx.doi.org/10.4324/9781315057040-5.
Der volle Inhalt der Quelle
7
Pietrzak, Michał, und Jan Dworniak. „Fuzje i przejęcia w warunkach kryzysu w sektorze mleczarskim“. In Nadzór korporacyjny w warunkach kryzysu gospodarczego. Wydawnictwo Uniwersytetu Łódzkiego, 2010. http://dx.doi.org/10.18778/7525-393-1.18.
Der volle Inhalt der QuelleAnnotation:
W opracowaniu przedstawiono procesy fuzji i przejęć w branży mleczarskiej i ich dynamikę w kontekście kryzysu, jaki dotknął sektor w 2008 r. W latach 2000-2009 osiem spółdzielni wykorzystało fuzje i przejęcia, jako metodę wzrostu, przejmując 32 mleczarnie o łącznej wartości majątku 685 mln zł (ekwiwalent 16% aktywów należących do spółdzielni mleczarskich). Głęboki kryzys, jaki dotknął polskie i europejskie mleczarstwo zahamował dynamikę procesów fuzji i przejęć w kraju. Analiza 5 z 8 aktywnych na rynku M&A spółdzielni wykazała, ż tylko w 2 przypadkach możemy mówić o umiarkowanym sukcesie procesów fuzji i przejęć. Potwierdza to prawidłowość obserwowaną w innych działach gospodarki, że fuzje i przejęcia są wysoce ryzykownym przedsięwzięciem gospodarczym.
8
Partridge, Michael. „W. T. Stead, ‘Mr Gladstone at Eighty-Seven’, Temple Magazine, 5:1 (1897), pp. 321–32“. In Lives of Victorian Political Figures I, 349–62. Routledge, 2021. http://dx.doi.org/10.4324/9781003192282-24.
Der volle Inhalt der Quelle
9
Taber, Douglass F. „Synthesis of Naturally Occurring Cyclic Ethers: Boivivianin B (Murakami), SC- Δ 13 -9-IsoF (Taber), Brevisamide (Panek, Lindsley,Ghosh), Gambierol (Mori)“. In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0050.
Der volle Inhalt der QuelleAnnotation:
The challenge of controlling the relative and absolute configuration of highly substituted cyclic ether-containing natural products continues to stimulate the development of new synthetic methods. Masahiro Murakami of Kyoto University showed (J. Org. Chem. 2009, 74, 6050) that Rh-mediated addition of an aryl boronic acid to 1 proceeded with high syn diastereocontrol, giving 3. This set the stage for Au-mediated rearrangement, leading to 4. We found (J. Org. Chem. 2009, 74, 5516) that asymmetric epoxidation of 5 followed by exposure to AD-mix could be used to prepare each of the four diastereomers of 6. We carried 6 on the isofuran 7, using a stereodivergent strategy that allowed the preparation of each of the 32 enantiomerically pure diastereomers of the natural product. Following up on the synthesis of brevisamide 16 described (Organic Highlights, November 16, 2009) by Kazuo Tachibana of the University of Tokyo, three groups reported alternative total syntheses. James S. Panek of Boston University prepared (Organic Lett. 2009, 11, 4390) the cyclic ether of 16 by addition of the enantiomerically pure silane 9 to 8. Craig W. Lindsley of Vanderbilt University used (Organic Lett. 2009, 11, 3950) SmI2 to effect the cyclization of 11 to 12. Arun K. Ghosh of Purdue University employed (Organic Lett. 2009, 11, 4164) an enantiomerically pure Cr catalyst to direct the absolute configuration in the hetero Diels-Alder addition of 14 to 13. Rubottom oxidation of the enol ether so formed led to the α-hydroxy ketone 15. Yuji Mori of Meijo University described (Organic Lett. 2009, 11, 4382) the total synthesis of the Gambierdiscus toxicus ladder ether gambierol 19. A key strategy, used repeatedly through the sequence, was the exo cyclization of an epoxy sulfone, illustrated by the conversion of 17 to 18. The epoxy sulfones were prepared by alkylating the anions derived from preformed epoxy sulfones such as 20.
10
Taber, Douglass F. „Organocatalyzed C–C Ring Construction: The Jørgenson Synthesis of (+)-Estrone“. In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0070.
Der volle Inhalt der QuelleAnnotation:
Ana Maria Faísca Phillips and Maria Teresa Barros of the Universidade Nova de Lisboa added (Eur. J. Org. Chem. 2014, 152) the bromo ester 1 to cinnamaldehyde 2 to give the cyclopropyl phosphonate 3 in high ee. Mukund P. Sibi and Jayaraman Sivaguru of North Dakota State University used (Angew. Chem. Int. Ed. 2014, 53, 5604) an organocatalyst to mediate the 2+2 photocycloaddition of 4, leading to 5. Shu-Li You of the Shanghai Institute of Organic Chemistry expanded (Org. Lett. 2014, 16, 1810) the four-membered ring of 6 to create the cyclopentanone 7 in high ee. Damien Bonne and Jean Rodriguez of Aix-Marseille Université condensed (Chem. Eur. J. 2014, 20, 410) the cyclopentanone 8 with 9 to give 10. Santanu Mukherjee of the Indian Institute of Science, Bangalore added (Chem. Sci. 2014, 5, 1627) the lactone 12 to the prochiral 11 to give 13 with remarkable diastereo- and enantiocontrol. Yixin Lu of the National University of Singapore constructed (Angew. Chem. Int. Ed. 2014, 53, 5643) the cyclopentene 16 by adding 14 to the allene 15. Efraim Reyes and Jose L. Vicario of the Universidad del País Vasco prepared (Chem. Eur. J. 2014, 20, 2145) the highly substituted cyclohexene 19 by combining 17 and 18. Maurizio Benaglia of the Università degli Studi di Milano added (Adv. Synth Catal. 2014, 356, 493) the ketone 20 to 21 to create the cyclohexanone 22. Ben W. Greatrex of the University of New England in Australia used (J. Org. Chem. 2014, 79, 5088) an organocatalyst to cyclize the symmetrical dialdehyde 23 to the α-hydroxy ketone 24. Dieter Enders of RWTH Aachen added (Org. Lett. 2014, 16, 2954) the β-keto ester 25 to 26 to give an intermediate that was further condensed with 27 to complete the preparation of 28. Eric N. Jacobsen of Harvard University prepared (Angew. Chem. Int. Ed. 2014, 53, 5912) the cycloheptenone 30 by the enantioselective intermolecular addition of the pyrylium salt derived from 29 to ethyl vinyl ether. Bor-Cherng Hong of the National Chung Cheng University initiated (Org. Lett. 2014, 16, 2724) the assembly of the steroid derivative 33 by the enantioselective addition of 32 to the unsaturated aldehyde 31.
Konferenzberichte zum Thema "W 32.5 fe5"
1
Parker, Jack L., und Mohamed S. El-Genk. „Enhanced Saturation Boiling of HFE-7100 Dielectric Liquid on Extended Copper Surfaces“. In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32496.
Der volle Inhalt der QuelleAnnotation:
Experiments are performed, which investigated the enhancement in saturation boiling of HFE-7100 dielectric liquid on copper surfaces having a footprint of 10 × 10 mm and four 3 × 3 mm corner pins that are 2, 3 and 5 mm tall. These pins increase the geometrical surface area, by 96%, 144%, and 240%, respectively, and the surfaces are prepared using #400 and #1500 emery papers to investigate the effect of roughness on boiling heat transfer. Still photographs and video footage are recorded of the boiling processes. Nucleate boiling starts at a few isolated sites on the inside of the pins, close to the common line with the base surface, markedly reducing or eliminating the temperature excursion prior to boiling incipience. Measurable enhancements are obtained in both natural convection and nucleate boiling heat transfer. On the plane Cu surfaces prepared with emery paper #1500, the maximum nucleate boiling heat transfer coefficient, based on the foot print area, hB*, is 1.16 W/cm2.K and increases to 1.80, 2.03 and 2.37 W/cm2.K on the surfaces with 2, 3, and 5 mm tall pins. Similarly, the Critical Heat Flux (CHF), based on the foot print area, increases linearly with increased pin height, at a rate of ∼ 32% per mm. Increased surface roughness increases both hB* and CHF by additional 15% and 10% and markedly enhances nucleate boiling heat transfer at high surface superheats (ΔTsat > ∼10 K), but causes only little enhancement at lower superheats.
2
Miller, Nicholas C., Matthew Hodek, Christopher Barasich, Edward Gebara, John D. Albrecht und John Papapolymerou. „A 23 – 32 GHz LNA with Near 5 W Power Handling Capability Using 180 nm GaN HEMT Technology“. In 2023 18th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2023. http://dx.doi.org/10.23919/eumic58042.2023.10288986.
Der volle Inhalt der Quelle
3
Zhang, Qiutong, Jianjun Yu, Weiping Li, Min Zhu, Jiao Zhang, Junjie Ding, Xianming Zhao et al. „Demonstration of W-band 2×2 MIMO Millimeter Delivery Employing CMA and MRC Technology with over 7dB Gain“. In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/ofc.2024.m2f.5.
Der volle Inhalt der QuelleAnnotation:
We demonstrate 32 GBaud QPSK signal transmission over a 2 m wireless range at 93.5 GHz using CMA and MRC techniques with over 7 dB gain in a photon-assisted millimeter wave 2×2 MIMO communication system.
4
Nagasawa, Tsuyoshi, Soh Ishibashi und Hidenori Kosaka. „Research on Super-Lean Burn Spark Ignition Engine with In-Cylinder Water Injection using Gasoline Surrogate Fuels“. In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. 10-2 Gobancho, Chiyoda-ku, Tokyo, Japan: Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0055.
Der volle Inhalt der QuelleAnnotation:
<div class="section abstract"><div class="htmlview paragraph">The combination of super-lean burn spark ignition engine (excess air ratio λ ≈ 2) and in-cylinder water injection (WI) makes it possible to achieve thermal efficiency higher than 50%. Toward future fuel diversification including carbon-neutral fuels, technologies to improve SI engine thermal efficiency applicable to various fuels are required. In this study, the effect of in-cylinder WI on SI engine performance with a compression ratio of 17 and λ = 1.85 is investigated using premium gasoline, 5 components surrogate fuels for premium gasoline (S5H), and for regular gasoline (S5R). In the case of premium gasoline and S5H, spark timing can be advanced to MBT (minimum advance for best torque) by WI and gross indicated thermal efficiency (gITE) increases to 51.2% (premium gasoline) at water/fuel weight ratio (W/F) = 57.7% and 50.8% (S5H) at W/F = 62.9%. In the case of S5R, on the other hand, a strong knock forces a large spark retard at no-water condition. Although the water injection suppresses the knock and gives spark advance, the spark timing cannot be advanced to the region where stable lean combustion can be achieved. As a result, the maximum gITE for S5R only increases to 45.1% by WI of W/F = 69.3%. These results show that the effect of thermal efficiency improvement by WI can be obtained regardless of the fuel while a fuel with high knock resistance is required to achieve compatibility with super-lean burn.</div></div>
5
Mak, Lawrence, Andrew Kuczora, Michel B. DuCharme, Brian Farnworth, James Boone, Rob Brown, Stephen Cheung, Kerri-Ann Evely, Fabien A. Basset und Scott MacKinnon. „Experimental Study and Modelling of Thermal Protection in Liferafts Using a Thermal Manikin and Human Subjects“. In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79383.
Der volle Inhalt der QuelleAnnotation:
Experiments were conducted in cold conditions (5°C water temperature and 5°C air temperature) to assess the thermal protection of a 16-person, SOLAS approved, commercially available liferaft using a thermal manikin and human subjects. The comparison tests included four cases — 1. Inflated raft floor; dry clothing (Idry); 2. Inflated raft floor; wet clothing (Iwet); 3. Uninflated raft floor; dry clothing (Udry); 4. Uninflated raft floor; wet clothing (Uwet). The results demonstrated equivalence in insulation between human subjects and a thermal manikin for all cases of comparison (Idry: Manikin 0.236 (m2°C)/W versus Human 0.224 (m2°C)/W; Iwet: Manikin 0.146 (m2°C)/W versus Human 0.145 (m2°C)/W; Udry: Manikin 0.174 (m2°C)/W versus Human 0.185 (m2°C)/W; Uwet: Manikin 0.101 (m2°C)/W versus Human 0.116 (m2°C)/W). The results also showed the repeatability of the thermal manikin tests (0.177 (m2°C)/W versus 0.171 (m2°C)/W in Udry baseline case; and 0.101 (m2°C)/W versus 0.104 (m2°C)/W in Uwet baseline case). The results indicated that the insulation of a closed cell foam floor is comparable to an inflated floor (0.236 (m2°C)/W compared to 0.221 (m2°C)/W and 0.236 (m2°C)/W for closed foam floor from manufacturer A and B respectively). TPA provided considerable additional insulation than all baseline cases. A test with a human subject wearing a TPA in the Uwet case showed an improved insulation of 48% over the baseline case. TPA provided more additional insulation than a wet suit in all test cases except Udry case. In Uwet case, the worst test condition, the insulation obtained by sitting on a lifejacket (0.149 (m2°C)/W) is less than wearing a TPA (0.158 (m2°C)/W). Both of these are better than sitting directly on an uninflated floor (0.104 (m2°C)/W) or a closed cell foam floor (0.129 (m2°C)/W). There is a significant decrease in insulation value sitting in 10 cm of water (0.05 (m2°C)/W). Two human subject tests show an insulation value of 0.079 (m2°C)/W and 0.081 (m2°C)/W respectively. A liferaft occupant heat loss model was developed and integrated with Defense R&D Canada’s Cold Exposure Survival Model to predict survival time. For Uwet case, the worst test condition, the survival time is 32 hours and functional time is 24 hours for the experimental conditions.
6
Unnikrishnan, Vikram, und Guruswami Navin. „Successful Intervention in U and W Shaped Wells in Eagleford Basin – A Case History“. In SPE/ICoTA Well Intervention Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/218324-ms.
Der volle Inhalt der QuelleAnnotation:
Abstract An operator in Eagleford basin, decided to optimize production, by minimizing drilling efforts. This led to two wells drilled in a distinctive "U" and "W" shape, which would result in equivalent treatable laterals lengths in a lease with tight boundaries. Plug and Perf stimulation technique was carried out in these two wells and post stimulation cleanout had to be performed. Intervention in these unique shaped wells need to be planned with the proper Bottomhole Assembly (BHA) configurations to ensure that that no misrun occurs. Though these wells are drilled successfully with the rig, since there is rotational and axial capabilities, it does not necessarily mean that a Coiled Tubing (CT) intervention would be less challenging. The frac plugs for isolation were set not just in the straight sections of the well but also in some part of the bend as well. This paper will highlight the operational planning that was involved prior to performing intervention in these two wells. A complete coiled tubing modelling along with bending analysis on the milling BHA was performed to ensure that the downhole assembly does not undergo any failures due to well profile. A total of 32 frac plugs in "W" shaped well and 38 frac plugs in "U" shaped well were successfully cleaned/milled out. The two wells were completed with 5 ½", 23 lb/ft casing with a Measured Depth (MD) of 17,846 ft and 21,064 ft respectively. A 4 ½" Tricone bit along with a 3 1/8" workover motor and extended reach tool was utilized for the operation. Due to the pre-planning performed during the BHA selection, it eliminated a second run in each well, thereby allowing the operator to save around $150,000 on intervention costs. This paper will act as a guideline for any future intervention planned in wells with unique geometry.
7
Basu, Santanu, und Robert L. Byer. „Moving slab Nd:glass laser: experimental results“. In International Laser Science Conference. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.the4.
Der volle Inhalt der QuelleAnnotation:
The average power output from a Nd:glass slab laser is limited by thermal stress fracture because of the low thermal conductivity of glass. The moving slab laser concept increases the average output power much beyond the limit of the static slab lasers. In the moving slab laser the average thermal power is dissipated over the area of the slab while the gain is concentrated in a small region. The result is a gain enhancement and average power scaling of the area of the slab. In our first design we used a Brewster angle cut, zigzag path rectilinear slab of LHG-5 glass, 16.7 × 15 × 0.44 cm, which moved back and forth between two 4-mm diam krypton lamps and metal cooling plates by means of a computer-controlled linear motor. Static helium gas was used to thermally couple the glass to the cooling plates. At the limit of our power supply we obtained 43.8 W of average laser at 276 J/pulse and at 10-Hz repetition rate. At 30-Hz repetition rate and at 32 J/pulse the laser output was 13.5 W. The moving slab Nd:glass laser is in the process of scaling up to 300-W and 1-kW average power levels in two states of development.
8
White, J. D., A. G. L. Holloway und A. G. Gerber. „Predicting Turbine Performance of High Specific Speed Pumps Using CFD“. In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77460.
Der volle Inhalt der QuelleAnnotation:
A pump with a specific speed of 12000 was chosen to operate as a turbine (PAT) for a micro-hydro site having 5 m of head. Turbine performance of the pump was unavailable so it was simulated using CFD. The CFD model was first verified by comparison of simulated pump performance and manufacturer data. Simulated PAT performance covered a range of flow rates, from one to three times that of pump best efficiency point (BEP), for blade angles of 0 and ± 4°. The PAT BEP was located at a flow rate of 1.4 times that of pump BEP and a head of 1.6 times. For the specific site this corresponded to a shaft power of 32 k W and a flow rate of 770 1/s. The PAT was found to have an extended range of good efficiency, > 60%, for up to 3 times the pump BEP flow rate.
9
Chiriac, Victor Adrian, Tien-Yu Tom Lee und Vern Hause. „Thermal Performance Optimization of RF Packages for Wireless Communication“. In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42171.
Der volle Inhalt der QuelleAnnotation:
The increasing trend in power levels and associated densities leads to the need of design thermal optimization, either at the module level or at the system (module-board stack-up) level. The wireless communication industry is facing multiple challenges as it tries to promote smaller, faster and cost-effective packages, yet trying to cope with potential thermal bottlenecks. The present study investigates a new family of packages, whose thermal and electrical performances are far superior to the classic (standard) packages. A 3-D conjugate numerical study was conducted to evaluate the thermal performance of Gallium Arsenic (GaAs) die packaged in Quad Flat No Lead (QFN) packages for various wireless and networking applications. Two different QFN packages are investigated: a standard package and a Power package (PQFN) with thicker leadframe and solder die attach. The thermal impact of die attach material, leadframe thickness, die pad size, and board structure is evaluated and provides valuable information for product designers. Two powering scenarios are investigated: 1) one for standard operating parameters and 2) an alternative for extreme operating powering scenarios. Results indicate that the peak temperature reached on the die for 3×3 mm QFN under normal powering conditions is ∼138.5°C (or 119°C/W junction-to-air thermal resistance), while for the extreme scenario, the junction temperature is ∼186°C (or 125°C/W junction-to-air thermal resistance). In both cases, the top Au metal layer has a limited impact on lateral heat spreading. Under extreme powering conditions, the 5×5 mm PQFN package reaches a peak temperature of ∼126°C (66°C/W thermal resistance). A ∼32% reduction in peak temperature is achieved with the 5×5 PQFN package. The improvement is mainly due to the larger package size, high conductivity die attach material, thicker leadframe and more board thermal vias. A parametric study shows that the increase in leadframe thickness from 0.2 mm (8 mils) to 0.5 mm (20 mils) in the QFN package will lead to only 3% reduction in peak temperature. By comparison, for both packages, the die attach material (conductive epoxy vs. solder) will have a significant impact on the overall reduction in peak temperature (∼12%). Experimental measurements using an Infrared (IR) Microscope are performed to validate the numerical results. The results indicate good agreement (∼6% discrepancy) between the numerical model and the measurement.
10
Costa, José Cássio Figueira. „PREDIÇÃO DAS PROPRIEDADES FÍSICO-QUÍMICAS E FARMACOCINÉTICAS DO 7-HIDROXI-5-ACETOXIBISABOLENO: NOVA MOLÉCULA CONGÊNERE DO ALFA-BISABOLOL IDENTIFICADO EM LYCHNOPHORA ERICOIDES MART.“ In II Congresso Brasileiro de Biotecnologia On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2022. http://dx.doi.org/10.51189/conbiotec/49.
Der volle Inhalt der QuelleAnnotation:
Introdução: O metabolismo secundário vegetal é uma das principais responsáveis pela produção de uma grande diversidade de moléculas com potencial bioativo. A elucidação e caracterização molecular de novos compostos bioativos geram bases para estudos químicos e biológicos visando à produção e desenvolvimento de novos fármacos. A quimioinformática torna viável, a partir de algoritmos, a caracterização molecular de substâncias com estruturas elucidadas. O 7-hidroxi-5-acetoxibisaboleno (BoAcet) é um análogo terpenoídico do alfa-bisabolol, possui um agrupamento acetóxi ligado a um carbono secundário na posição 5 do anel heterocíclico, identificado pela primeira vez em extratos etanólicos de Lychnophora ericoides. O composto possui alto potencial antinociceptivo devido à diminuição significativa nos níveis dos mediadores IL-1b e TNF-a, citocinas-chave no processo nociceptivo, entretanto aspectos químicos, farmacocinéticos são desconhecidos. Objetivo: avaliar as propriedades físico-químicas e farmacocinéticas do 7-hidroxi-5-acetoxibisaboleno, composto inédito oriundo da L. ericoides. Metodologia: A molécula foi desenhada (SMILE: CC(C)=CCCC(C)(O)C1CC=C(C)CC1OC(C)=O) e avaliada por meio dos servidores Chemicalize, SwissADME, SwissParam e SwissSimilarity. A análise de similaridade em 32 bancos de dados, não demonstrou correlação estrutural com outros compostos elucidados disponíveis. Resultados: A análise preditiva demonstrou que a molécula possui massa molar de 280,408 g/mol, área de superfície polar topológica de 46,53 Å2, coeficiente de partição Log P o/w de 4,26±0,43, solubilidade intrínseca de 0,249 mg/mL, um doador de H, três aceptores de H, seis ligações rotacionáveis e um anel. As análises das propriedades farmacocinéticas demonstraram através de filtros físico-químicos de Linpiski, Veber, Muegge e Egan, que a molécula apresenta capacidade de atravessar a membrana celular, boa biodisponibilidade oral, não é substrato para a glicoproteína-P e não realiza inibição dos citocromos CYP1A2, CYP2C19, CYP2C9, CYP2D6 e CYP3A4, possui alta absorção, principalmente através do trato gastrointestinal, pode ultrapassar a barreira hematoencefálica, podendo atuar no sistema nervoso central, possui baixa possibilidade de ser absorvido pela pele (Log Kp = -5,60 cm/s. Conclusão: Este estudo evidencia que a BoAcet possui grande potencial para a geração de produtos farmacêuticos, entretanto, avaliações químicas e analises em sistemas biológicos são necessários para melhor compreender os aspectos moleculares, farmacodinâmicos, farmacocinéticos e toxicológicos intrínsecos ao composto.