INTRODUCTION Muhiphase reactors with fixed beds of catalyst particles contacted by either cocurrent downflow (Trickle-Bed Reactors) or cocurrent upflow (Packed Bed Column) of gas and liquid, are widely used in petroleum, petrochemical and chemical industries, environmental, biochemical and electrochemical processing, etc In many cases the gaseous reactant is sparingly soluble in the liquid phas...

hgs. 144. 72s.) Lonidon: Baidiirc, 1Tindall & Cox, 1963. Dit. \xivlter speaks wvitlh authority onl thiis relatively new mietlhodi of inivestigationi, as he hlas t)een conicernled in its developmenlt from almost the be(ginning. lie gives a clear accounlt of the technique, dealinig xvith equipmenit, choice of radioactive test agent, anld interpretationi of renograms. He has included maniy example...

-High-resolution electron microscopy images of a 27311"10]/(II1) bicrystal produced by heavy cold rolling and annealing show a multiplicity of grain boundary core structures. Two grain boundary states are separated by a partial grain boundary dislocation with Burgers vector b = 1/2 b~ (where b I = 1/6[112] is the Burgers vector of a secondary dislocation). This implies a change in translational...

It is shown that the graph QQ) C obtained from the 7 -cube QQ) by deletion of a perfect Hamming code C has a spanning self-complementary subgraph which is edge-transitive but not vertextransitive and also extremal among all the cube subgraphs which are square-blocking and codeavoiding. Our work uses combinatorial techniques involving orientations on the Fano plane and the resulting Steiner trip...

Background Psoriatic arthritis (PsA) is a form of spondyloarthritis (SpA) associated with alterations to the serum lipid profile. Current research suggests that biological treatment TNF and IL-17 inhibitors differently affects profile Th cells populations in PsA ankylosing spondylitis (AS) Objectives To investigate relationship between profile, disease activity T-cells phenotype changes patient...

This paper presents an implemented vision-based strategy for computing three-finger stable grasps on unknown planar objects. Its only input is an image of a real unknown curved object instead of synthetic polygonal models. Grasp regions are identified for achieving tolerance around contact points so that errors in finger positioning as well as a finite finger size are considered. It can find ex...

(~l-J ([ti'~rna ar), which dn r~ol have e×plicil phrase slitil~ilJre tales, ai'~ sutlable for higher le, vel syritax but eel far low level b.liigu~ljo-wlitch sootri to require lhe power of phrase .~iti°!Jollire rrilos. 'Fhlt,; fJ~'~i)ei' t31"r).'lenl!~ an h+iiploi~iolilaihiu nloll'ied itJ ceiTil:~llle lext0ul!., ddvoii parsllig ~lild phras(t D, triJcluro parsing, with a si)cclal riitl~liis ~;al...

The spread of antibiotic resistant bacteria is one of the most pressing problems in human health today. In the case of the opportunistic pathogen Pseudomonas aeruginosa, which causes lethal airway infections in cystic fibrosis and immunocompromised patients, the formation of biofilms plays an important role in antibiotic resistance and disease progression. Biofilm formation is mediated in part ...

Ill this [)~/I)(?l" , WL' [)1'()])(1:-;4! ~lll ~lt l{ ,() l l l~l l i (! i i lO l ] l ( ) ( [ for det.octing disc.oiirse, s l r t l c l , l i r e IlSillgj ;i var iely of chics exisLhig in I.]ie surf;ice info lunal ion of ~>euten('es. ~,Jl/(? [lilVC cousi(ler(!(] l,[il'(!e Dyl)eb o1' (:hie illFOl'lllfll, iou: (;lil(? (~Xl)l'eS;y;ioIIS, occl i l ' r (~ l i ( : ( ) ()[' i(l(~lll, i ( ; ; i ] / s y...

The reduction of gaseous oxygen on carbon-supported plat inum electrodes has been studied at 150~ with polarization and potential decay measurements. The electrolyte was either 100 weight percent phosphoric acid or that acid with a fluorinated additive, potassium perfluorohexanesulfonate (C6FI3SO3K). The pseudo-Tafel curves of the overpotential vs. log (iiL/(iL -i)) show a two-slope behavior, p...