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Volume 28 (164)
Volume 29 (184)
Volume 30 (178)
Volume 31 (164)
Volume 32 (187)
Volume 33 (180)
Volume 34 (244)
Volume 35 (201)
Volume 36 (198)
Volume 37 (207)
Volume 38 (194)
Volume 39 (230)
Volume 40 (179)
Volume 41 (189)
Volume 42 (238)
Volume 43 (156)
Volume 44 (172)
Volume 45 (204)
Volume 46 (171)
Volume 47 (150)
Volume 48 (158)
Volume 49 (134)
Volume 50 (131)
Volume 51 (129)
Volume 52 (132)
Volume 53 (147)
Volume 54 (170)
Volume 55 (150)
Volume 56 (183)
Publication Year
2001 (183)
2000 (150)
1999 (170)
1998 (147)
1997 (132)
1996 (129)
1995 (131)
1994 (134)
1993 (158)
1992 (150)
21Author    Requires cookie*
 Title    Abbau und Toxizität von Hexachlorbicyclo [2.2.1]-hept-5-en- Derivaten (Cyclodien-Insektizide)  
 Abstract    Structural A spects o f B iological Conversion and T o xicity o f H exachloro-norbornene D erivatives (C yclodiene-Insecticides) W . R ü c k e r t und K . B a l l s c h m i t e r In stitu t Biological conversion, cyclodiene-insecticides, house-fly, piperonyl butoxide, intrinsic toxicity The aspects o f molecular-structure and biological conversion have been studied for 12 deriva­ tives o f the endosulfan ether 1 [4, 5, 6, 7, 8, 8-hexachloro-1, 3, 3a, 4, 7, 7a-hexahydro-4, 7-inethanoisobenzofuran]. Adults o f a normal house-fly strain (Musca dom estica) have been used in the assay. D erivatives o f 1 monosubstituted in position 1 are found to be converted substantially faster than products disubstituted in position 1 and 3, respectively. Metabolism is inhibited for all compounds studied after application o f piperonyl butoxide as a synergist. Besides proving that on oxidative metabolism has to be discussed and in fact could be proved for some derivatives, the intrinsic toxicity o f the compounds studied shows up under these conditions. Some derivatives known to be metabolites o f the pesticide Endosulfan® show a high intrinsic toxicity to house­ flies if the oxidative metabolism is inhibited. 
  Reference    (Z. Naturforsch. 28c, 107—112 [1973]; eingegangen am 18. September 1972/4. Januar 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0107 
 Volume    28 
22Author    H., GrisebaRequires cookie*
 Title    In stitu te of P lant P hysiology Academ y of Sciences of the U SSR Lehrstuhl für Biochem ie der Pflanzen am Biologischen In stitu t II der U niversität Freiburg i. Br  
 Abstract    Cam ellia sinensis catechins, biosynthesis, dihydrokaempferol The incorporation o f [G -3H ]-dihydrokaem pferol into catechins o f young tea shoots Camellia sinensis L.) was compared w ith that o f l -[ U -14C]-phenylalanine and [U -14C]-shikimic acid. The percent incorporation of all three precursors into (—)epicatechin was about equal, whereas the incorporation o f shikimic acid into the galloylated catechins was somewhat higher than that of phenylalanine and dihydrokaempferol. From the results it can be concluded that dihydro­ kaempferol is a precursor for catechins in the tea plant. 
  Reference    (Z. Naturforsch. 28c, 113 [1973]; received 6. Nov. 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0113 
 Volume    28 
23Author    R. Sa, S. An, W. T. H Ie MRequires cookie*
 Title    Enzymatic Hydrolysis of Poly-DL-Lysine L  
 Abstract    Racemic polypeptide, pronase, proteolytic enzyme, enantiomeric block copolymer, isotactic polymer The c o n d e n s a t i o n o f racemic ly s in e to p o ly -D L -ly s in e produces a great number o f d i s t i n ­ guishable molecules. Following merely statistical reasoning the number o f "pure peptides" — consisting of only one sort o f enantiomers — should be extrem ely low. The hydrolysis of poly-D L -ly s in e by pronase a n d t a k a -d i a s t a s e shows that a content o f about 3% "pure" poly-peptide is found in the product, which emphasises the preferential sythesis o f identical enantiomers within the polymer chain. 
  Reference    (Z. Naturforsch. 28c, 116—119 [1973]; received November 20 1972/January 4 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0116 
 Volume    28 
24Author    Requires cookie*
 Title    The Correlation of Lipid Release and Photochemical Activities in Isolated Spinach Chloroplasts  
 Abstract    Lipids, thylakoids, photophosphorylation Purified isolated spinach chloroplasts were suspended in media o f different pH and the extracts obtained after centrifugation were analyzed for their lipid composition. The quantity of lipids present in the supernatant increased considerably by lowering the proton concentration. Under alkaline conditions more than 30°/o o f the phospho-and sulfolipids were released from the thylakoid membranes. A stabilization was achieved when higher concentrations o f M gCl2 were present. Photochemical activities showed an uncoupling o f photophosphorylation at pH 8.5 and 8.9, and a stabilization at pH 5.5. The correlation between phosphorylation and the release of lipids was further demonstrated in the presence o f M gC b when the ATP-form ation was pro­ tected under alkaline conditions. From the comparison o f the lipid composition in the extracts obtained from broken chloroplasts and from fragments after sonication, the conclusion can be drawn that part o f the phospho-and sulfolipids and m onogalactolipids are located at the surface of the membrane. The majority of lipids released are bound to particles as demonstrated by the sedimentation in the ultracentrifuge. 
  Reference    (Z. Naturforsch. 28c, 120—127 [1973]; received October 24 1972/January 18 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0120 
 Volume    28 
25Author    Requires cookie*
 Title    The Secondary Structure of Proteins in the Thylakoid Membrane  
 Abstract    W il h e l m M e n k e a n d R o l f -D i e t e r H ir t z 
  Reference    (Z. Naturforsch. 28c, 128 [1973]) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0128 
 Volume    28 
26Author    Requires cookie*
 Title    Ein Screening System zur Bestim m ung einer Hemmung spezifischer Enzyme der DNS-Synthese und DNS-Reparatur  
 Abstract    A Screening System to D eterm ine Inhibition o f Specific E nzym es o f the Sem iconservative D N A -syn thesis and D N A -repair R eplication F . K o c s is , W . K l e i n und H . A l t m a n n In stitu t für Biologie, Screening, lymphocytes, DN A-repair, semiconservative DN A -synthesis, inhibitors To observe the influence of substances on specific enzymes o f the semiconservative D N A -synthesis and D N A -repair replication a screening system was developed, which represents an extensive modification of known papers. Optimal conditions were found after comprehensive investigations. The detergens Tween 80 and the dichloride were used as test substances. 
  Reference    (Z. Naturforsch. 28c, 131—135 [1973]; eingegangen am 15. November 1972/8. Januar 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0131 
 Volume    28 
27Author    Requires cookie*
 Title    Untersuchung der longitudinalen Kernspinrelaxation in konzentrierten Lösungen von Heringsspermien -DNA zur Frage des an DNA gebundenen W assers* + Spin-L attice R elaxation in Concentrated Solutions o f H ering-Sperm D N A and th e Problem of W ater Bound to D N A  
 Abstract    Nuclear magnetic resonance (N M R), spin-lattice relaxation, deoxyribonucleic acid (D N A), bound water, proton exchange 
  Reference    (Z. Naturforsch. 28c, 136—143 [1973]; eingegangen am 13. September/15. Dezember 1972.) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0136 
 Volume    28 
28Author    Requires cookie*
 Title    Monolayer States of a Cyanine Dye Studied by a Spectroscopic Technique  
 Abstract    M onolayer states, absorption spectroscopy, cyanine dyes, dye dimers A single beam, single reflectance photometer for investigation o f monolayers at the air water interface is described. A cyanine dye monolayer is studied. The molecular arrangements in different monolayer states are derived from the observation o f the monomer-dimer equilibrium of the dye chromophores. 
  Reference    (Z. Naturforsch. 28c, 144—148 [1973]; received November 29 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0144 
 Volume    28 
29Author    H.Requires cookie*
 Title    The Effect of Tetrodotoxin, Veratridine and Tetraethylammonium Chloride on the Receptor Potential o f the Crayfish Photoreceptor Cell  
 Abstract    S t i e v e a n d T . Ma l i n o w s k a In stitu t für Neurobiologie der K em forschungsanlage Jülich GmbH. The effect of three drugs on the receptor potential (ReP) o f the crayfish retina measured with external electrodes was tested. 1. Tetrodotoxin (TTX) (1 • 1CT6 g/ml and 1 • 10-5 g/ml) showed only slight effects on the receptor potential (Table I and II). 2. Veratridine (VERA) (1 • 10-5 g/ml) showed only small effects o f the same type as TT X but a little stronger on the receptor potential which became obvious especially in the period after washing out the drug (Table III). 3. Tetraethylammonium (TEA) (5 mWl) caused a decrease o f the height o f the receptor potential w ithout influencing the repolarizing phase (decrease-time tz) markedly (Table IV). The results can be interpreted as follows: 1. The permeability increase for sodium, calcium and magnesium, which causes the rising phase 
  Reference    (Z. Naturforsch. 28c, 149—156 [1973]; received December 12 1972) 
  Published    1973 
  Keywords    Receptor potential, tetrodotoxine, veratridine, TEA, photoreceptor cell, Crustacea 
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 Identifier    ZNC-1973-28c-0149 
 Volume    28 
30Author    S.Requires cookie*
 Title    Reactions o f Retinals in a Model Membrane System  
 Abstract    e y m o u r S . B r o d y D epartm ent o f Biology, New Y ork U niversity, Vision, retinal, monolayers, photoreactions, model-membrane M onomolecular films o f 9-cis, 11-c/5, 13-cis and all-trans retinal were formed at an air-water interface. Area/molecule and surface potential were measured before, during and after illumina­ tion. The initial quantum yield o f the photoisomerization o f 9-cis retinal was 0.25. Irradiation of a retinal monolayer resulted in 30 to 60 m V olt changes in surface potential. Complexation of retinals w ith lysine and cysteine were studied. 
  Reference    (Z. Naturforsch. 28c, 157—164 [1973]; received December 18 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0157 
 Volume    28 
31Author    Requires cookie*
 Title    Zur Deutung der Karzinogenität aus dem UV-Spektrum von 3 .4 - Benzpyren und 1.2-Benzpyren  
 Abstract    Interpretation o f Carcinogenesis from U V -S p ectra o f 3 ,4 -B enzpyrene and 1 ,2 -B en zp yren e F r it z A. P o p p Carcinogenesis, UV-spectrum The comparsion of the experimental UV-spectra of 3,4-BP and 1,2-BP requires a possible 
  Reference    (Z. Naturforsch. 28c, 165—168 [1973]; eingegangen am 23. November 1972 15. Januar 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0165 
 Volume    28 
32Author    W. B.Requires cookie*
 Title    W. Becker * Ein Cartesianischer Submikrolitertaucher, in dem gemischt werden kann 169 Ein Cartesianischer Submikrolitertaucher, in dem gemischt werden kann M ixing of Solutions in a Cartesian Subm icroliter-D iver  
 Abstract    Cartesian submicroliter-diver, mixing A method is described of mixing solutions in a cartesian submicroliter-diver with a gas volume of about 0.2 [A. The solutions are mixed within about 10 sec. Approximately 1-2 min after interruption of the experiments the readings are resumed. 
  Reference    (Z. Naturforsch. 28c, 169—172 [1973]; eingegangen am 7. November / 8. Dezember 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0169 
 Volume    28 
33Author    Requires cookie*
 Title    Die  
 Abstract    Epidermis von T en ebrio m o lito r L. Puppen als Zielorgan für das Juvenilhormonanaloge 10.11-E poxy-6.7-trans-2.3-£rans-farnesylpropenyläther The Epiderm is o f the Pupae o f Tenebrio molitor L. as Target Organ for the Ju ven ile H orm one Analogue 1 0 ,ll-E p o x y -6 ,7 -fr a n s-2 ,3 -tra n s-fa rn e sy lp r o p en y le th e r P e t e r S c h m i a l e k , M a r i n a B o r o w s k i , A s t r i d G e y e r , V e r e n a M i o s g a , M i c h a e l N ü n d e l , E c k h a r d R o s e n b e r g und B u r g e r Z a p f H errn Professor D r. H e i n z D a n n e n b e r g zum 60. Geburtstag gew idm et Epidermis, Tenebrio m olitor L., target organ function, juvenile hormone receptor 
  Reference    (Z. Naturforsch. 28c, 173—177 [1973]; eingegangen am 17. November 1972/18. Januar 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0173 
 Volume    28 
34Author    A. M., B. A.Requires cookie*
 Title    Tryptic Fragmentation of the Calcium Transport System in the Sarcoplasmic Reticulum  
 Abstract    Sarcoplasmic reticulum, calcium transport, ATPase, tryptic cleavage Two protein fragments with a molecular weight of 50-60 000 daltons are formed when the calcium transport ATPase of the SR is mildly digested with trypsin. The initial fragmentation of the ATPase does not interfere with calcium transport, calcium dependent ATPase activity and phosphoprotein formation. The decay of the initially formed protein fragments after prolonged tryptic digestion is accompanied by the decline of the rate of calcium uptake and the calcium concentrating ability while the activity of the calcium activated ATPase is reduced only mode­ rately. The initial tryptic fragmentation does not give rise to any change in the morphological appearance in the SR membranes. After prolonged digestion brush border or smooth surface structures are observed depending on the agent used for negative staining. 
  Reference    (Z. Naturforsch. 28c, 178—182 [1973]; received December 7 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0178 
 Volume    28 
35Author    Requires cookie*
 Title    Heterogeneity of the Native Ribosomal Subunit Fraction in HeLa Cells  
 Abstract    C h r i s t i a n L e c o u * , S i g r i d A r e n d s * * , J e a n -P i e r r e L i a u t a r d ** a n d K u r t K ö h l e r Ribosomal particles, protein synthesis The cytoplasm of growing HeLa cells contains a certain quantity of native ribosomal subunits. They constitute a heterogeneous fraction consisting of at least two categories of particles. The first category comprises the new ly emerging native 40S subunits whidi do not form 80S couples under any in vitro condition tried. It is postulated that these n ative subunits carry an anti-association factor whidi cannot be stripped off by 0.5 m KC1 treatment. Transiently native subunits of the second category reassociate to 80S ribsomes only in the presence of an association factor. 
  Reference    (Z. Naturforsch. 28c, 183—187 [1973]; received December 4 1972/January 23 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0183 
 Volume    28 
36Author    Requires cookie*
 Title    V *. Verhalten der Inosit-und Cholinphospholipide  
 Abstract    Stim ulation o f E m bryonic R at Cells b y Calf Serum V*. M etabolism o f Inositol-and Choline Phospholipids H a n s -J ü r g e n R i s t o w , W e r n e r F r a n k und M a r g i t t a F r ö h l i c h Rat cells, calf serum, inositol-, cholin phospholipids Embryonic rat fibroblasts were accumulated in Gi-phase by incubation in serum-free medium and subsequently stimulated by the addition of calf serum. Using 3H-inositol and 14C-choline as label for phospholipids, the following results have been obtained: 1. Within a few minutes after stimulation up to 20 per cent of total phosphatidyl 3H-inositol is released from the membranes of prelabelled cells. This could not be detected with 14C-choline-prelabelled phospholipids. 2. Incorporation of 3H-inositol into phosphatidyl inositol, but not the uptake into the acid-soluble cell pool, is increased 30 and 45 min after stimulation by a factor of 2.8 and 3.3 respectively. Incorporation of 14C-choline at that time is significantly lower (2.0 and 1.6 respectively). 3. Incorporation of 32P inorganic phosphate into the lipid fraction of stimulated cells is 8.9 times higher after 10 min as compared with the controls. 
  Reference    (Z. Naturforsch. 28c, 188—194 [1973]; eingegangen am 18. Dezember 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0188 
 Volume    28 
37Author    Requires cookie*
 Title    ATP-Spaltung an der Zelloberfläche der Leukozyten aus normalen und leukämischen Ratten  
 Abstract    -C leavage on th e Cell o f L eucocytes of Norm al and Leukaem ic R ats H . F r i e d r i c h -F r e k s a , A. S i m o n * und H. P a c h o w s k y ATP-cleavage, cell surface, leukaemia, rats, growth regulation ATP-cleavage on the surface of L-5222 leukaemic cells of the BD IX-rat occurs at a rate of only 20°/o of the corresponding value for normal leucocytes. 
  Reference    (Z. Naturforsch. 28c, 195—197 [1973]; eingegangen am 19. Dezember 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0195 
 Volume    28 
38Author    Requires cookie*
 Title    Bakterienwand und Tumorinduktion durch  
 Abstract    A g ro b a c te riu m tu m efa cie n s B acterial Cell W all and Tumor Induction by Agrobacterium tumefaciens R o l f B e id e r b e c k Bacterial cell walls, penicillin, plants, tumors Bacterial cell walls are concerned with the tumor induction by Agrobacterium tumefaciens on leaves of Kalanchoe in two different ways: 1. If an inoculum of the virulent strain B6 of A. tumefaciens is mixed with cells of the avirulent strain IIBNV6 or with high concentrations of cell wall preparations from B6 itself tumor induction is inhibited. The same is true with cell wall preparations which were treated with ether or chloroform. In vitro growth of the bacteria is not influenced by cell wall preparations. 2. Penicillin inhibits tumor induction by inhibiting bacterial growth. Addition of penicillin as late as 8 hours after infection is still inhibiting tumor initiation. Growth of induced tumors is not inihited by penicillin. The meaning of the two cell wall related processes in tumor induction is discussed. 
  Reference    (Z. Naturforsch. 28c, 198—201 [1973]; eingegangen am 6. November 1972/22. Januar 1973) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0198 
 Volume    28 
39Author    Requires cookie*
 Title    Purification and Properties of the RNA Polymerase-Template Complex of an Influenza Virus  
 Abstract    R a l p h T. S c h w a r z a n d Ch r i s t o p h S c h o l t i s s e k RNA template-polymerase complex, influenza virus, complementary RNA (synthesis in vitro) The enzyme-template complex of influenza RNA polymerase (fowl plague virus) was purified 200-fold. The sole virus component found in this preparation was RNP-antigen. All attempts to remove the internal template led to an irreversible loss of enzyme activity. The complex was essentially free of nucleases. It synthesized exclusively viral minus strand RNA and was unable to initiate more than one cycle of RNA synthesis. The lag phase at the beginning of RNA synthesis in vitro, present in crude enzyme preparations, was abolished with the purified complex. The enzyme was sensitive to sulfhydryl reagents and it was able to accept a-S-ATP in place of ATP. 
  Reference    (Z. Naturforsch. 28c, 202 [1973]; received September 21/December 6 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0202 
 Volume    28 
40Author    Requires cookie*
 Title    Mode of Replication and Temperature Characteristics of the RNA Polymerase of an Influenza Virus in v itr o  
 Abstract    V o l k e r P a f f e n h o l z a n d Ch r i s t o p h S c h o l t is s e k RNA-polymerase (RNA-dependent), influenza virus, double-stranded RNA While the enzyme template complex of fowl plague virus (FPV) polymerase is rather stable during incubation in v itro , some of the newly synthesized RNA is degraded rapidly. At low temperatures a pronounced lag phase of RNA synthesis occurs, which can be prevented by incu­ bation with substrate. The in vitro products are initially single-stranded RNA, which are con­ verted to partially double-stranded molecules by phenol and SDS. The results are compatible with an open replicative intermediate structure, in which the newly synthesized RNA is bound to the complementary template only over a rather short region at the growing point. A comparison of the temperature characteristics of the RNA polymerases of the highly virulent FPV with that of the low pathogenic virus N revealed that the lag phase is a virus-specific property. There appears to exist a correlation between virulence and heat stability of this enzyme, the activity of which is rate limiting at the normal temperature of the host (41 °C). 
  Reference    (Z. Naturforsch. 28c, 208—213 [1973]; received September 14/December 6 1972) 
  Published    1973 
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 Identifier    ZNC-1973-28c-0208 
 Volume    28 
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