ABSTRACT

R s. Rontgen-Einheit Rabi-Methode / (nucl) Rabi method Racemat n racemate (1. optically inactive com­

pound; 2. salt or ester of DL-tartaric acid) -/partielles partial racemate

Racematspaltung /, Racemattrennung / resolu­ tion of racemates, splitting (separation) of racemic mixtures

Racematverbindung / racemic compound Racemform / racemic form racemisch racemic racemisieren to racemize Racemisierung / racemization -/partielle partial racemization Rad n, Rad-Einheit / rad (a unit of absorbed dose

of ionizing radiation) Radialbeschleunigung / angular acceleration Radialkolbenpumpe / radial-piston pump Radialschaufel / radial blade radialstengelig, radialstrahlig (cryst) radiating,

divergent Radialstromreaktor m radial-flow [catalytic] reac­

tor, radial fixed-bed reactor Radialventilator m centrifugal fan Radierbarkeit /, Radierfestigkeit / (pap) erasability Radikal n [free] radical -/langlebiges (persistentes) persistent (long-

lived) radical Radikalanion n radical anion, anion radical radikalartig radical-like Radikalausbeutefaktor m efficiency factor, initiator

efficiency (radical polymerization) Radikalbildner m radical former Radikalbildung / radical formation Radikalfalle / free-radical trap Radikalfanger m free-radical scavenger Radikalion n radical ion, ion radical radikalisch radical Radikalkation n radical cation, cation radical Radikalkettenpolymerisation / [free-]radical po­

lymerization Radikalkettenreaktion / free-radical chain reac­

tion, radical-chain reaction Radikallieferant m s. Radikalbildner radikalliefernd radical-producing Radikalmechanismus m free-radical mechanism Radikalname m radical name Radikalpolymerisation f s. Radikalkettenpolymeri­

sation Radikalreaktion / [free-]radical reaction Radikalrekombination / radical recombination Radikalubertragung /radical transfer Radikalzentrum n radical centre Radioactinium n 227Th, RdAc, thorium-227, radio­

actinium radioaktiv radioactive • ~ machen to radioactivate

• - markiert radio-labelled -/hochgradig s. -/stark -/nicht non-radioactive, cold -/schwach feebly radioactive -/stark highly radioactive, hot Radioaktivitat / radioactivity -/induzierte (kiinstliche) induced radioactivity Radioautographie /autoradiography, radioautog­

raphy

Radiocarbonmethode f radiocarbon method, 14C

method Radiochemie / radiochemistry Radiochemiker m radiochemist radiochemisch radiochemical Radiochromatographie / radiochromatography Radiocobalt n radiocobalt, radioactive cobalt,

(specif) 60Co cobalt-60 Radioelement n radioelement, radioactive element radiogen radiogenic Radiographie f radiography (materials testing) radiographisch radiographic Radioindikator m radiotracer, radioactive indicator

(tracer) Radioindikatormethode f radiotracer method radioindiziert radio-labelled Radioiod n radioiodine, radioactive iodine, (specif)

1311 iodine-131 Radioisotop n s. Radionuklid Radiokohlenstoff m radiocarbon, radioactive

carbon, (specif) 14C carbon-14 Radiokohlenstoffmethode f s. Radiocarbon­

methode Radiokolloid n radiocolloid Radiologie f radiology Radiolumineszenz f radioluminescence Radiolyse f radiolysis Radiometer n radiometer Radiometrie f radiometry radiometrisch radiometric Radiomimetikum n (biol) radiomimetic radiomimetisch (biol) radiomimetic Radionatrium n radiosodium, radioactive sodium,

(specif) 24Na sodium-24 Radionuklid n radionuclide, radioactive nuclide Radiophosphor m radiophosphorus, radioactive

phosphorus, (specif) 32P phosphorus-32 Radioschwefel m radiosulphur, radioactive sulphur,

(specif) 35S sulphur-35 Radiosonde f radiosonde Radiostrahlung / radio radiation Radiostrontium n radiostrontium, radioactive

strontium, (specif) 90Sr strontium-90 Radiothorium n 228Th, RdTh thorium-228, radio­

thorium Radiotoxizitat f radiotoxicity Radiotracer m radiotracer, radioactive tracer (indi­

cator) Radiotracertechnik / radiotracer method Radium n Ra radium Radiumbehandlung / (med) radium therapy Radium-Beryllium-Neutronenquelle / radium-

beryllium neutron source Radiumbromid n radium bromide Radiumcarbonat n radium carbonate Radiumchlorid n radium chloride Radiumeinlage / (med) radium pack Radium-Emanation fs. Radon-222 Radiumgehalt m radium content

Radiumiodat n radium iodate Radiumisotop n radium isotope Radiummoulage / (med) radium mould Radiumpraparat n radium preparation Radiumreihe / radium series Radiumsulfat n radium sulphate Radiumtherapie / radium therapy Radius m/Bohrscher Bohr radius (of the hydrogen

atom) -/Goldschmidtscher Goldschmidt radius (of ions) -/van-der-Waalsscher van der Waals radius (of

atoms) Radon n Rn radon Radon-218 n 218Rn radon-218 Radon-219 n 219Rn radon-219 Radon-220 n 220Rn radon-220 Radon-222 n 222Rn radon-222 Radonfluorid n radon fluoride Raffinade / refined sugar Raffinadeklare / (sugar) refined liquor Raffinadezucker m refined sugar Raffinat n raffinate (solvent extraction) Raffinatblei n refined lead Raffinatende n raffinate end (solvent extraction) Raffination / refining, refinement, purification (as of

metals, oils, sugar)-, refining, [refining] treatment (of petroleum and its products)

- im SchmelzfluB fire refining -/elektrolytische electrolytic refining, electrorefin­

ing -/hydrierende hydrorefining Raffinationsanlage / refinery, refining plant Raffinationsruckstand m refinery residue Raffinatkupfer n refined (casting) copper Raffinatphase / raffinate phase (solvent extraction) Raffinatseite / raffinate end (solvent extraction) Raffinatstripper m raffinate stripper (solvent

extraction) Raffinatverdampfer m raffinate evaporator

(solvent extraction) Raffinerie / refinery, refining plant -/carbochemische (kohlechemische) coal refinery Raffinerieabwasser n waste from refineries (petro­

chemical plants, petroleum refining), petroleum refinery waste water, refinery waste

Raffineriegas n (petrol) refinery gas Raffineriemelasse / (sugar) refinery molasses raffinieren to refine, to purify (e.g. metals, oils, sug­

ar)-, to refine, to treat (petroleum and its products) -/im SchmelzfluB to fire-refine Raffiniergas n (petrol) refinery gas Raffinierstahl m refined steel (iron, bar), shear

steel, merchant bar raffiniert/mit Ldsungsmitteln solvent-refined Ragmischung / (rubber) rag mix (stock) Rahm m cream -/geschlagener whipped cream -/saurer cultured cream Rahmeis n ice cream, cream ice

Rahmen n creaming (of emulsions) Rahmenfilter n 1. screen (envelope) filter (for

gases)-, 2. plate-end-frame filter (for liquids) Rahmen[filter]presse f plate-and-frame press

(filter press, filter), flush-plate [filter] press Rahmkelle /skimmer Rahmkuhlwanne f cream chilling (cooling) vat Rahmloffel m skimmer Rahmplasma n cream plasma Rahmreifer m cream (milk) ripener, cream ripening

tank (vat) Rahmreifung /cream ripening Rahmseparator m cream separator, skimming

machine Rahnwerden n darkening (of wine) Rainfarnol n tansy oil (from Chrysanthemum vul-

gare (L) Bernh.) Rainout m rain-out (the pollutants scavenged by

raindrops) Rainout n rain-out, in-cloud scavenging (of pollu­

tants by raindrops) Rakel f (text, pap) doctor blade (knife) (in printing)-,

squeegee (for screen printing) Rakelappretur / (text) doctor finish Rakelauftragmaschine fs. Rakelstreichmaschine Rakelmesser n (plast, rubber) doctor blade (knife) Rakelstreichmaschine /doctor [kiss] coater, knife

coater Rakelstreifen m doctor streak Raketentreibstoff m rocket propellant (fuel) -/fester solid [rocket] propellant, solid [rocket] fuel -/flussiger liquid [rocket] propellant, liquid [rocket]

fuel -/hypergoler hypergolic [rocket] propellant, hyper-

golic [rocket] fuel, hypergol (self-igniting upon contact of components)

Ramachandran-Diagramm n (bioch) Ramachandran plot (of conformations of polypeptides)

ramanaktiv Raman-active Raman-Bande / Raman band Raman-Effekt m Raman effec; -/stimulierter stimulated Raman scattering Raman-Frequenz / Raman frequency ramaninaktiv Raman-inactive Raman-lntensitat / Raman intensity Raman-Linie / Raman line Raman-Spektroskopie / Raman spectroscopy -/inverse inverse Raman spectroscopy, IRS - mit Laser-Mikrosonde molecular optics laser

examination, MOLE -/photoakustische photoacoustic Raman spec­

troscopy, PARS ramanspektroskopisch by Raman spectroscopy Raman-Spektrum n Raman spectrum -/stimuliertes stimulated Raman spectrum Raman-Streustrahlung / Raman scattered radia­

tion Raman-Streuung / Raman scattering] Raman-Untersuchung / Raman study (approach)

Raman-Verschiebung / Raman shift (displace­ ment)

Raman-Zirkular-lntensitatsdifferenz / Raman circular intensity difference, RCID

Ramiedichtung /, Ramiepackung / ramie packing Rammbrunnen m (hyd) driven well Rammelkamp-Methode / Rammelkamp method

(for testing penicillin) Rampe /platform -/schrage ramp, slope Rampenbildung /casing (outer layer) effect (a

defect in glass) Ramsbottom-Carbon-Wert m s. Ramsbottom-Ver-

kokungswert Ramsbottom-Methode / Ramsbottom [coking]

method, Ramsbottom carbon residue method Ramsbottom-Test m Ramsbottom test (for deter­

mining the carbon residue of oils) Ramsbottom-Verkokungswert m, Ramsbottom-

Verkokungszahl / Ramsbottom value (coke number)

Rand m 1. edge, border, brim; 2. s. Randschicht randaufkohlen (met) to case-carburize Randaufkohlung / (met) case carburization Randbedingung / boundary condition Randblase /subcutaneous blowhole (foundry) Randeffekt m (phys ch) edge effect; (phot) border

effect Randern n (ceram) banding randkohlen s. randaufkohlen Randschicht / (met) case, surface layer -/aufgekohlte carburized case -/eingesetzte s. -/aufgekohlte -/gehartete hardened case -/nitrierte nitride[d] case -/zementierte s. -/aufgekohlte Randspritzstoff m (pap) squirt-trimmed stock,

squirt trim Randwalzen /p/edge rolls (sheet-glass manufac­

ture) Randwasser n (petrol) edge water Randwassergrenze / (petrol) water table Randwasserzeichen n (pap) edge (marginal)

watermark Randwinkel m contact (wetting) angle Randzone f s. Randschicht Raney-Katalysator m Raney catalyst, [alloy] skel­

eton catalyst Raney-Nickel n Raney nickel [catalyst] Rang m (coal) rank Rangfolge / (nomencl) order of priority (precedence,

seniority) Rangklassifikation / der Kohlen rank classifica­

tion of coals Rangordnung fs. Rangfolge Rangstufe / (coal) rank Rankine-Skale / Rankine [temperature] scale Ranziditat f s. Ranzigkeit Ranziditatsprufung f (food) rancidity test

ranzig (food) rancid • ~ werden to rancidity Ranzigkeit f (food) rancidity, rancidness ~/hydrolytische hydrolytic rancidity Ranzigwerden n (food) rancidification Raoult-Gesetz n Raoult’s law Rapid-Equilibrium-Random-Mechanismus m

rapid-equilibrium random[-order] mechanism (enzyme kinetics)

Rapidnetzer m rapid wetting agent Rapshartfett n hydrogenated rape-seed oil Rapsol n rape[-seed] oil (from Brassica napus L.