نتایج جستجو برای: de vardas catalyst
تعداد نتایج: 1575478 فیلتر نتایج به سال:
background: here we describe a new case of partial distal 10q trisomy in a 6-year-old iranian girl from healthy parents with mental, growth, and psychomotor retardations. methods: additional clinical features include dysmorphic craniofacial features, microcephaly, bilateral hydronephrosis without heart problems, small and rotated low-set ears, bow-shaped mouth, abnormal teeth, short neck, and a...
The activity of a Te-MgO catalyst prepared by adsorbing Te vapor onto MgO powder was determined by dehydrogenation of indane, 9,10-dihydrophenanthrene, cumene, and p-cymene. The activity of the Te-MgO catalyst was higher than that of the MgO catalyst in most of the cases investigated. The selectivity of the former catalyst was much higher than that of the later in all cases studied. The Te-MgO ...
Un cas de Syndrome de Rubinst.ein-Taybi Un enfant age de 13 mois s'adres'se pour des troubles digestifs et respiratoires. Il presenfait un elargissements de Ia phalange -terminale du ponce et du gros orteil, la voute palatine ogivale, et -une dysmorphie faciale caracteristique: nez aquilin obliquite anti -maJ ourlees et implantee-s basses. Le retard mental nez avcc un retard statural moins ...
La,dialyse peritoneale constitue une methode d,epuration extra-renale simple,efficqCe et d,un prix de revient modere. La dialyse peritoneale,ne necestite aueuneinstalation complexe,peut-etre consideree comme une methode de reanimation non specialisedont la vulgarosation doit permettre: De traiter surplace d,une maniere intensive et prophylactique les nombreuses insuffisances renales aiPue...
A new catalyst derived from osmium has been prepared, fully characterized and tested in the dihydroxylation of alkenes. The catalyst was prepared by wet impregnation methodology of OsCl3•3H2O on a commercial micro-magnetite surface. The catalyst allowed the reaction with one of the lowest osmium loadings for a heterogeneous catalyst and was selective for the monodihydroxylation of 1,5-dienes. M...
1 Celina P. Leão , Production and System Dept., Minho University, Campus de Gualtar, 4710-057 Braga, Portugal, [email protected] 2 Pedro M. Silva , Industrial Electronics Dept., Minho University, Campus de Azurem, 4800-058 Guimaraes, Portugal 3 Paulo C. Oliveira, Industrial Electronics Dept., Minho University, Campus de Azurem, 4800-058 Guimaraes, Portugal 4 Nuno C. Carvalho, Industrial Electro...
Les Meseures Prise En Faveur Des Pays En Voie De Developpement Dans Le Cadre De La Convention De Berne ( Annex A’ L’ Acte De 1971 Paris) Contenant 6 Articles Au But De Repost Et Supprimer Des Obstacles Pour Traduction Et Aussi Pour Puclication Des Oeuvres Originals Scientifiques , Litteraires Et Artistiques Des Auteurs Des Pays Developpe’s En Faveur Des Pays En Voie De Develop...
The promoting effect of niobium in a Li/MgO catalyst for the oxidative coupling of methane (OCM) and for the oxidattve dehydrogenation of ethane (ODHE) has been studied in some detail. it has been found that a Li/Nb/MgO catalyst with 16 wt % niobium showed the highest activity for the C, production in the OCM reaction; the activity at 600 “C was ten times that of the Li/MgO catalyst at the same...
Etude de deux cas d'Hyperlymphocytose infectieuse benigne consernant de deux enfants subfebriles, Sans adenopathies ni Hepato-SplenG--- megalie confirmee par les examens bi.ologiques et en particulier Etude cytologique de la moele osseuse; Amelioration clinique et Hematologique de fac;on spontanee sans Traitement.
Enhancing P-xylene selectivity during m-xylene transformation using mildly pre- coked ZSM-5 catalyst
In the present work, the transformation of m-xylene was studied over fresh and pre-coked HZSM-5 catalyst in a riser simulator over the temperature range of 350-500C.Significant differences were observed in both the activity and product selectivity pattern for the two forms of the catalyst. While, the fresh catalyst generally gave higher m-xylene conversion, the pre-coked catalyst produced highe...
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