HOW TO AVOID LEAKAGE FLOWS IN TUBE BUNDLE-TYPE HEAT EXCHANGERSWITTMANN D.sdECHANGEURS DE CHALEUR INDUSTRIELS ET RECUPERATION ENERGETIQUE. JOURNEES INTERNATIONALES D'ETUDES/1979-11-14/LIEGE; BEL; DA. S.D.; 7 P.; BIBL. 5 REF.Conference Paper

DIE VERMEIDUNG VON LECKSTROEMUNGEN IN ROHRBUENDELWAERMEAUSTAUSCHERN = MOYEN D'EVITER LES FUITES DANS LES ECHANGEURS DE CHALEUR A FAISCEAU TUBULAIREWITTMANN D.1980; DECHEMA-MONOGR.; ISSN 0070-315X; DEU; DA. 1980; VOL. 87; NO 1802-1817; PP. 257-266; ABS. ENG/FRE; BIBL. 5 REF.Article

Aerial defense of the nest by workers of the stingless bee Trigona (Tetragonisca) angustula (Latreille) (Hymenoptera: apidae)WITTMANN, D.Behavioral ecology and sociobiology (Print). 1985, Vol 16, Num 2, pp 111-114, issn 0340-5443Article

Nest architecture, nest site preferences and distribution of Plebeia wittmanni (Moure of Camargo, 1989) in Rio Grande do Sul, Brazil (Apidae: Meliponinae)WITTMANN, D.Studies on neotropical fauna and environment. 1989, Vol 24, Num 1, pp 17-23, issn 0165-0521, 7 p.Article

ZUR CHEMISCHEN STRUKTUR DER LITHOSPERMSAEURE AUS LITHOSPERMUM OFFICINALE L = STRUCTURE CHIMIQUE DE L'ACIDE LITHOSPERMIQUE DE L.O. L.WAGNER H; WITTMANN D; SCHAFER W et al.1975; TETRAHEDRON LETTERS; G.B.; DA. 1975; NO 8; PP. 547-550; BIBL. 6 REF.Article

Intraabdominal infections-introductionWITTMANN, D. H.World journal of surgery. 1990, Vol 14, Num 2, pp 145-147, issn 0364-2313Article

UEBERGANGSMETALL-CARBIN-KOMPLEXE. LXVII: KATIONISCHE CARBIN-KOMPLEXE DES WOLFRAMS-SYNTHESE, STRUKTUR UND REAKTIONSVERHALTEN GEGENUEBER NUCLEOPHILEN = COMPLEXES METAUX DE TRANSITION-CARBYNE. LXVII. COMPLEXES CARBYNE CATIONIQUES DE W. SYNTHESE, STRUCTURE ET REACTION AVEC LES NUCLEOPHILESFISCHER EO; WITTMANN D; HIMMELREYCH D et al.1982; CHEM. BER.; ISSN 0009-2940; DEU; DA. 1982; VOL. 115; NO 9; PP. 3141-3151; ABS. ENG; BIBL. 17 REF.Article

DRONE BEES FIXATE THE QUEEN WITH THE DORSAL FRONTAL PART OF THEIR COMPOUND EYESVAN PRAAGH JP; RIBI W; WEHRHAHN C et al.1980; J. COMP. PHYSIOL.; DEU; DA. 1980; VOL. 136; NO 3; PP. 263-266; BIBL. 34 REF.Article

DIE HOEHENLAGE DER SCHICHTENGRENZE TERTIAER-QUARTAER IM MITTLEREN OBERSCHWABEN (L'ALTITUDE DE LA LIMITE TERTIAIRE-QUATERNAIRE A L'OBERSCHWABEN MOYEN).GERMAN R; LOHR J; WITTMANN D et al.1967; EISZEITALTER U. GEGENW.; DEU; 1967(12), VOL. 18, P. 104 A 109Miscellaneous

Polymerblends = Polymer blendsWARTH, H; WITTMANN, D.Kunststoffe. 1999, Vol 89, Num 10, pp 124-128, issn 0023-5563, 3 p.Article

Landmark orientation during the approach to the nest in the stingless bee Trigona (Tetragonisca) angustula (Apidae, Meliponinae)ZEIL, J; WITTMANN, D.Insectes sociaux. 1993, Vol 40, Num 4, pp 381-389, issn 0020-1812Article

Mating site specificity, reproduction and vector selection in Nemognatha nigrotarsata (Col., Meloidae), a nest parasite of leafcutter bees and other pollinators of crops in Rio Grande do SulBLOCHTEIN, B; WITTMANN, D.Zeitschrift für Angewandte Entomologie. 1988, Vol 105, Num 4, pp 414-419, issn 0044-2240Article

[(SCN)₃(CO)₂W¬CNEt₂]^2-2[NEt₄]⁺, der erste dianionische Übergangsmetallcarbin-Komplex = [(SCN)₃(CO)₂WCNi-t₂]^2- 2[NEt₄]⁺, le premier complexe dianioniques métal de transition-carbyne = [(SCN)₃(CO)₂WCNEt₂]^2- 2[NEt₄]⁺, the first dianionic transition metal-carbyne-complexFISCHER, E. O; WITTMANN, D.Journal of organometallic chemistry. 1985, Vol 292, Num 1-2, pp 245-246, issn 0022-328XArticle

Why males of leafcutter bees hold the females' antennae with their front legs during matingWITTMANN, D; BLOCHTEIN, B.Apidologie. 1995, Vol 26, Num 3, pp 181-195, issn 0044-8435Article

Operative management of intraabdominal infectionAPRAHAMIAN, C; WITTMANN, D. H.Infection. 1991, Vol 19, Num 6, pp 453-455, issn 0300-8126Article

Nectar dehydration by male carpenter bees as preparation for mating flightsWITTMANN, D; SCHOLZ, E.Behavioral ecology and sociobiology (Print). 1989, Vol 25, Num 6, pp 387-391, issn 0340-5443Article

Welche Diät ergibt Arbeiterinnen bei in vitro Aufzucht von Honigbienen? = Quel régime alimentaire permet l'élevage in vitro d'ouvrières d'abeilles? = On which diet can worker honeybees be reared in vitro?WITTMANN, D; ENGELS, W.Apidologie. 1987, Vol 18, Num 3, pp 279-288, issn 0044-8435Article

Callonychium petuniae, a New Panurgine Bee Species (Apoidea, Andrenidae), Oligolectic on Petunia (Solanaceae)CURE, J. R; WITTMANN, D.Studies on neotropical fauna and environment. 1990, Vol 25, Num 3, pp 153-156, issn 0165-0521Article

Visually controlled station-keeping by hovering guard bees of Trigona (Tetragonisca) angustula (Apidae, Meliponinae)ZEIL, J; WITTMANN, D.Journal of comparative physiology. A, Sensory, neural, and behavioral physiology. 1989, Vol 165, Num 5, pp 711-718, issn 0340-7594Article

Further methodological improvement in antibiotic bone concentration measurements: penetration of ofloxacin into bone and cartilageWITTMANN, D. H; KOTTHAUS, E.Infection. 1986, Vol 14, pp S270-S273, issn 0300-8126, suppl. 4Article

Management of secondary peritonitisWITTMANN, D. H; SCHEIN, M; CONDON, R. E et al.Annals of surgery. 1996, Vol 224, Num 1, pp 10-18, issn 0003-4932Article

Etappenlavage : advanced diffuse peritonitis managed by planned multiple laparotomies utilizing zippers, slide fastener, and velcro analogue for temporary abdominal closureWITTMANN, D. H; APRAHAMIAN, C; BERGSTEIN, J. M et al.World journal of surgery. 1990, Vol 14, Num 2, pp 218-226, issn 0364-2313Article

Southern distributional limits of euglossine bees in Brazil linked to habitats of the Atlantic- and subtropical rain forest (Hymenoptera: Apidae: Euglossini)WITTMANN, D; HOFFMANN, M; SCHOLZ, E et al.Entomologia generalis. 1988, Vol 14, Num 1, pp 53-60, issn 0171-8177Article

Scheduled reoperations (Etappenlavage) for diffuse peritonitisTEICHMANN, W; WITTMANN, D. H; ANDREONE, P. A et al.Archives of surgery (Chicago, IL. 1960). 1986, Vol 121, Num 2, pp 147-152, issn 0004-0010Article

AIDS, emergency operations, and infection controlWITTMANN, M. M; WITTMANN, A; WITTMANN, D. H et al.Infection control and hospital epidemiology. 1996, Vol 17, Num 8, pp 532-538, issn 0899-823XConference Paper