Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
home > search

Now showing items 49 - 64 of 37317

  • Classical\\({\\mathcal{W}}\\)-Algebras in TypesA,B,C,DandG

    Molev, A. I.   Ragoucy, E.  

    Download Collect
  • Kleines Mittelhochdeutsches W?rterbuch () || C/K/Z

    Hennig   Beate  

    Download Collect
  • Ablation Resistance of C/C Composites with Atmospheric Plasma-Sprayed W Coating

    Zhou, Zhe   Wang, Yuan   Gong, Jieming   Ge, Yicheng   Peng, Ke   Ran, Liping   Yi, Maozhong  

    To improve the ablation resistance of carbon/carbon (C/C) composites, tungsten (W) coating with thickness of 1.2 mm was applied by atmospheric plasma spraying. The antiablation property of the coated composites was evaluated by oxyacetylene flame ablation experiments. The phase composition of the coating was investigated by a combination of x-ray diffraction analysis and scanning electron microscopy with energy-dispersive x-ray spectroscopy analysis. The ablation resistance of the coated C/C substrates was compared with that of uncoated C/C composites and C/C-CuZr composites after ablation for 30 s. The properties of the coated C/C composites after ablation time of 10, 30, 60, 90, 120, and 180 s were further studied. The results indicated that the mass and linear ablation rates of the W-coated C/C composites were lower than those of uncoated C/C or C/C-CuZr composites after ablation for 30 s. The coating exhibited heat stability after 120 s of ablation, with mass loss and linear ablation rates of 7.39 x 10(-3) g/s and 3.50 x 10(-3) mm/s, respectively. However, the W coating became ineffective and failed after ablation for 180 s. Three ablation regions could be identified, in which the ablation mechanism of the coating changed from thermochemical to thermophysical erosion to mechanical scouring with increasing ablation time.
    Download Collect
  • “Between Long and Morton”? C. W. Mayo Opines

    Download Collect
  • Ablation Resistance of C/C Composites with Atmospheric Plasma-Sprayed W Coating

    Zhou, Zhe   Wang, Yuan   Gong, Jieming   Ge, Yicheng   Peng, Ke   Ran, Liping   Yi, Maozhong  

    Download Collect
  • C. W. Kilmister 1924-2010

    Silvester, John R.  

    Download Collect
  • C. W. Kilmister 1924-2010

    Silvester, John R.  

    Download Collect
  • Corrosion resistance of Cr–C–W alloys produced by electrodeposition

    Kuznetsov, Vitaly V.   Pavlov, Leonid N.   Vinokurov, Eugene G.   Filatova, Elena A.   Kudryavtsev, Vladimir N.  

    Cr–C–W coatings were deposited from organo-aqueous solutions containing dimethylformamide by electrolysis. The obtained deposits were studied by the modern physical methods: X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), time-of-flight secondary ion mass spectrometry (SIMS), and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The corrosion of Cr–C–W electrolytic deposits was studied in the solutions of sulfuric acid, sodium chloride, and hydrochloric acid. Cr–C–W coatings demonstrated higher corrosion resistance compared with chromium deposits. It was suggested that the decrease of the corrosion rate is caused by the formation of the thin layer enriched with tungsten and its oxides at the surface of the Cr–C–W alloy. This assumption was confirmed by both XPS and SIMS.
    Download Collect
  • Corrosion resistance of Cr–C–W alloys produced by electrodeposition

    Kuznetsov, Vitaly V.; Pavlov, Leonid N.; Vinokurov, Eugene G.; Filatova, Elena A.; Kudryavtsev, Vladimir N.  

    Cr-C-W coatings were deposited from organo-aqueous solutions containing dimethylformamide by electrolysis. The obtained deposits were studied by the modern physical methods: X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), time-of-flight secondary ion mass spectrometry (SIMS), and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The corrosion of Cr-C-W electrolytic deposits was studied in the solutions of sulfuric acid, sodium chloride, and hydrochloric acid. Cr-C-W coatings demonstrated higher corrosion resistance compared with chromium deposits. It was suggested that the decrease of the corrosion rate is caused by the formation of the thin layer enriched with tungsten and its oxides at the surface of the Cr-C-W alloy. This assumption was confirmed by both XPS and SIMS.
    Download Collect
  • The Cambridge Guide to African American History || Handy, William C. (W. C.)

    Gavins, Raymond  

    Download Collect
  • Układ antykoagulacyjny białka C w ostrych białaczkach

    Marzenna Galar   Jarosław Piszcz   Anna Szumowska   Łukasz Bołkun   Janusz Kłoczko (Prof. dr hab. med.)  

    | Figures/TablesFigures/Tables | ReferencesReferencesSTRESZCZENIERozwojowi ostrych białaczek już w momencie diagnozy towarzyszy subkliniczna aktywacja krzepnięcia. Zaburzenia hemostazy, wynikające m.in. z uszkodzenia śródbłonka i osłabionej funkcji syntetycznej wątroby, nie zawsze manifestują się jawną skazą krwotoczną lub chorobą zakrzepową. Wydolność mechanizmów kompensacyjnych na poziomie układu antykoagulacyjnego białka C - zapewnia równowagę hemostatyczną między czynnikami prozakrzepowymi i prokrwotocznymi. Badaniami objęto 20 chorych z nowo rozpoznanymi ostrymi białaczkami. W początkowym okresie rozwoju choroby obserwowano obniżenie stężeń antykoagulacyjnych białek syntezowanych w wątrobie (PC, PS) oraz wzrost sTM i znaczne obniżenie sEPCR - białkowych markerów uszkodzenia śródbłonka naczyń.
    Download Collect
  • Ni and W EXAFS of Ni-WS2/C Hydrotreating Catalysts

    S. P. A. Louwers;R. Prins;  

    W LIII EXAFS of WS2/C and Ni-WS2/C catalysts showed that the WS2/C catalyst contains small WS2 particles of about 7 W atoms, while the Ni-WS2/C catalyst contains larger particles. Ni K EXAFS demonstrated that the Ni atoms were present at the edges of the WS2 particles in a Ni-W-S like structure, like the Ni-Mo-S structure in Ni-MoS2/C catalysts. In the Ni-WS2/C catalysts Ni is, however, coordinated by six sulphur atoms, four at 2.22 Å and two at 2.35 Å from the Ni atom.
    Download Collect
  • Freezing and melting in the peritectic W–C–\r X

    Bloembergen P   Dong W   Wang T  

    Download Collect
  • Corrosion behaviour of HVOF-sprayed Co–Cr–W–C coating in NaCl solution

    Verdian M. M.  

    Download Collect
  • Measuring c-quark polarization in W +c samples at ATLAS and CMS

    Kats   Yevgeny  

    Download Collect
  • Układ antykoagulacyjny białka C w ostrych białaczkach

    Galar, Marzenna; Piszcz, Jarosław; Szumowska, Anna; Bołkun, Łukasz; Kłoczko, Janusz  

    Download Collect
1 2 3 4 5 6 7 8 9 10

Contact

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

Submit Feedback