Rudolf Hoppe

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The h ighes t grade occurrence of ma rga r i t e in the fo rma t ion s tud ied is a t t he beg inn ing of t he s taurol i te zone [4], b u t a s y s t e m a t i c search of t he h igher -grade field b o u n d a r y is lacking a t present . Besides the work of Sagon [6] th i s seems to be the on ly recognized occurrence of marga r i t e as an i m p o r t a n(More)
other than molecular C O 2 (e.g., as bicarbonate). The bicarbonate/CO2 ratio increases only by a factor of 3 per order of magnitude decrease in CO2. The largest bicarbonate fraction occurring was about 1.5%. Figure 1 shows the evasion velocity w of CO2 from pure water as a function of rotor frequency n. Up to n ~ 280 min1 or 7.3 m/ s wind the gas exchange(More)
P r g p a r a t i o n wurde der e twa 83 p p m Bor e n t h a l t e n d e Molybd g n d r a h t ( ~ 0,6 ram) bei t 900 ~ t5 m i n gegliiht, d a n n u n t e r fl i issigem St ickstoff gebrochen u n d die Bruchfl / iche im R E M bei 20 kV B e s c h l e u n i g u n g s s p a n n u n g n n t e r s u c h t . Die D r a h t probe war bevo rz ug t in te rkr i s ta l(More)
N a c h W~LLS ~) kristal l is iere LieZrF~, aus w~Briger L 6 s u n g dargeste l l t , hexagona l . W i r h a b e n pu l ve r f6 rmi ges Li~ZrF~ aus Li2ZrOa darges te l l t , das z u n ~ c h s t m i t an N H a F gesh~ttigter I-IF au fgesch lossen u n d d a n n m i t F~ f luor ier t wurde . E inkr i s t a l l e w u r d e n teils du rch E r h i t z e n dieses(More)
Die Gleichgewichtskurve der Reakt ion ~1~ liegt bet 2 kb und 390 • 10 ~ C, bet 7 kb und 405 -45 ~ C. Sie ist kennzeichllend fiir die Untergrellze der Grfinschieferfazies (~5~, S. t 53--155). Die Daten des Gleichgewichts ffir die Reakt ion [2~ sind: 2kb und 490 ~ q5 ~ C; 7 kb und 525 ~ • 5 ~ C. Diese Gleichgewichtskurve kellllzeiehnet m e t a m o r p h e(More)
on p o l y v a n a d a t e an i on is so slow t h a t if t he so lu t ions are no t h e a t e d af te r each add i t ion of N a O H , t h e y readi ly acqui re h igh PK and c o n d u c t a n c e va lues ; b u t on hea t ing , a sha rp inf lec t ion occurs a t a s t age cor respond ing to t he add i t ion of one mol of Na=O per tool of V~O s a t p H 7 sugges(More)
esthesia throughout the experiment was maintained by a combined injection of sodium pentobarbital (13 mg/ kg) and chlorprothixene (Taractan, 3 mg/kg) every hour. The body temperature was kept constant at 37.5 ~ Tone and noise bursts were delivered free-field to the left ear. Recordings from small neuron clusters were obtained by lacquer-insulated steel(More)
increase of scattered chromatin (with the presence of a spindle apparatus), central chromatin mass and abnormal anaphases (e.g., lagging chromosomes). Asbestos does not seem to prevent spindle formation or disorientation, except in conditions of obvious cell toxicity. It must be stressed that most of the effects are indicative of cell death and not of(More)
der B e s c h i c h t u n g eine Ve rdopp l nng der Leuch td i ch t eu l i t e r schiede. Das beschr iebene Ve r f ah ren bi ldet e ine b r a u c h b a r e ErgXnzung der i iblichen me ta l l og raph i schen Arbei tsweisen. Sein Vorzug b e s t e h t darin, dab ohne c h e m i s c h e n Aiigriff die Gef t iges t ruk tu r ul iverfSJscht s i ch tba r wird. E ine(More)