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159篇 您的检索式：作者名="ells L"

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	题名	作者	年代	出处	被引量
1	Nickel ferrite spinel as catalyst precursor in the dry reforming of methane:Synthesis,characterization and catalytic properties显示文摘Dry reforming of methane by CO2 using nickel ferrite as precursor of catalysts was investigated.Nickel ferrite crystalline particles were prepared by coprecipitation of nitrates with NaOH or ammonia followed by calcination,or by hydrothermal synthesis without calcination step.The textural and structural properties were determined by a number of analysis methods,including X-ray diffraction (XRD),Raman spectroscopy and X-ray photoelectron spectroscopy (XPS),among which X-ray diffraction (XRD) was at room and variable temperatures.All synthesized oxides showed the presence of micro or nanoparticles of NiFe2O4 inverse spinel,but Fe2O3 (hematite) was also present when ammonia was used for coprecipitation.The reducibility by hydrogen was studied by temperature-programmed reduction (TPR) and in situ XRD,which showed the influence of the preparation method.The surface area (BET),particle size (Rietveld refinement),as well as surface Ni/Fe atomic ratio (XPS) and the behavior upon reduction varied according to the synthesis method.The catalytic reactivity was investigated using isopropanol decomposition to determine the acid/base properties.The catalytic performance of methane reforming with CO2 was measured with and without the pre-treatment of catalysts under H2 in 650-800 C range.The catalytic conversions of methane and CO2 were quite low but they increased when the catalysts were pre-reduced.A significant contribution of reverse water gas shift reaction accounted for the low values of H2 /CO ratio.No coking was observed as shown by the reoxidation step performed after the catalytic reactions.The possible formation of nickel-iron alloy observed during the study of reducibility by hydrogen was invoked to account for the catalytic behavior.	Rafik Benrabaa Hamza Boukhlouf Axel Lfberg Annick Rubbens Rose-Nelle Vannier Elisabeth Bordes-Richard Akila Barama	2012	Journal of Natural Gas Chemistry2012，21，5：	5
2	Effect of metal ions on sucrose synthase from rice grains-a study on enzyme inhibition and enzyme topography显示文摘	ELLING L	1995	Glycobiology1995，5，2：	1
3	Double-balloon enteroscopy (push-and-pull enteroscopy)of the small bowel:feasibility and diagnostic and therapeutic yield in patients with suspected small bowel disease 显示文摘	May A Nachbar L Ell C	2005	Gastrointest Endosc2005，62，1：	1
4	Endoscopic interventions in the small bowel using double balloon enteroscopy: feasibility and limitations显示文摘	May A Nachbar L Pohl J Ell C	2007	Am J Gastroenterol2007，102，3：	1
5	Biomch anical aspects of fix ed br idge-w or k suppor ted by natur al teeth and endoesseous implants显示文摘	Lundgr en D Laur ell L	2000	Per iodontology2000，4，1：	1
6	Stabilization of alumina with Poiyelectrolyte and Comb Copolymer in Solvent Mixtures of Water and alcohols显示文摘	Ola L Lisa P Ells C	2009	Journal of the European Ceramic Society2009，29，：	1
7	Mapping Patterns of Support for Privatization in the Mass Public显示文摘	Thompson L Elling R		0，，60：	1
8	Sources and sinks of formaldehyde and acetaldehyde: an analysis of Denver' s ambient concentration data 显示文摘	Anderson L G Lanning J A Bah'ell R	1996	Atmos Environ1996，30，：	1
9	Advantages of combined transmembrane topology and signal peptide prediction-the Phobius web server显示文摘	K?ll L Krogh A Sonnhammer ELL	2007	Nucleic acids research2007，35，2：	1
10	Effect of metal ions on sucrose synthase from rice grains-A study on enzyme inhibition and enzyme to- pography 显示文摘	Elling L	1995	Glycobiology1995，5，2：	1
11	Double-balloon enteroscopy (push-and-pull enteroscopy)of the small bowel: feasibility and diagnostic and therapeutic yield in patients with suspected small bowel disease显示文摘	May A Nachbar L Ell C	2005	Gastrointest Endosc2005，62，1：	1
12	Double-balloon enteroscopy (push-and-pull enteroscopy) of the small bowel:feasibility and diagnostic and therapeutic yield in patients with suspected small bowel disease显示文摘	May A Nachbar L Ell C	2005	Gastrointest Endosc2005，62，1：	1
13	Effect of metal ions on sucrose synthase from rice grainsa study on enzyme inhibition and enzyme topography显示文摘	Elling L	1995	Glycobiology1995，5，2：	1
14	Glycosylation of nucleocytopla-smic proteins:signal transduction and O-GlcNAc显示文摘	ells L Vosseller K Hart GW	2001	Science2001，291，5512：	1
15	Elliptic curve ElG amal based homomorphic image encryption scheme for sharing secret images显示文摘	Li L Abd ElL atif AA Niu X	2012	Signal Process2012，38，92：	1
16	Double-balloon Enteroscopy (push-and-pull Enteroscopy) of the Small Bowel:Feasibility and Diagnostic and Therapeutic Yield in Patients with Suspected Small Bowel Disease显示文摘	May A Nachbar L Ell C	2005	Gastrointest Endosc2005，62，1：	1
17	Rela- tion of subjective sensation of nasal patency witll na- sal inspiratory peak flow rate显示文摘	FAIRLEY J W DURHAN L H ELL SR	1993	Clin Otolaryngol1993，18，：	1
18	Stimulation of human breast carcinoma cell invasiveness and urokinase plasminogen activator activity by glucose deprivation 显示文摘	Belkacemi L Lam E Caldw ell JD	2006	Exp Call Res2006，312，10：	1
19	Isolated word recognition of silent speech using magnetic implants and sensors 显示文摘	Gibert J M Rybehenko S L Hofe R Ell S R Fagan M J moore R K Green P	2010	32 (10) : 1189 - 11972010，32，10：	1
20	Push-and-pull enteros- copy in the small bowel using the double-balloon tech- nique= results of a prospective European multicenter study显示文摘	Ell C May A Nachbar L	2005	Endoscopy2005，37，7：	1

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