ZIB

1

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Eremophilane derivatives and other constituents from Senecio species

Bohlmann, F. ; Zdero, C. ; Jakupovic, J. ; [et al.]

Amsterdam : Elsevier

Phytochemistry 24 (1985), S. 1249-1261

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ISSN: 0031-9422

Keywords: Compositae ; Senecio species ; bisabolene derivatives ; cacalol derivatives ; cumol derivatives. ; eremophilanes ; sesquiterpenes ; shikimic acid ester

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)81111-5

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2

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Isocedrene derivatives and other sesquiterpenes from moscharia pinnatifida

Singh, P. ; Jakupovic, J. ; Bohlmann, F.

Amsterdam : Elsevier

Phytochemistry 24 (1985), S. 1525-1529

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ISSN: 0031-9422

Keywords: Compositae ; Moscharia pinnatifida ; cyperenes nerolidol derivatives. ; guaianes ; isocedrenes ; sesquiterpenes

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)81059-6

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3

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Epi-Ililic acid from Alcantara Ekmaniana

Bohlmann, F. ; Singh, P. ; Robinson, H. ; [et al.]

Amsterdam : Elsevier

Phytochemistry 21 (1982), S. 456-457

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ISSN: 0031-9422

Keywords: Alcantara ekmaniana ; Compositae ; Vernonieae ; epi-ilicic acid. ; sesquiterpenes

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)95289-0

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4

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A guaian-5,12-olide from Hypochoeris cretensis

Bohlmann, F. ; Singh, P.

Amsterdam : Elsevier

Phytochemistry 21 (1982), S. 2119-2120

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ISSN: 0031-9422

Keywords: 5, 12-lactone. ; Compositae ; Hypochoeris cretensis ; guaianolide ; sesquiterpenes

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(82)83060-4

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5

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Three cadinene derivatives and a prostaglandin-like acid from Chromolaena species

Bohlmann, F. ; Singh, P. ; Jakupovic, J. ; [et al.]

Amsterdam : Elsevier

Phytochemistry 21 (1982), S. 371-374

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ISSN: 0031-9422

Keywords: C. pseudoinsignis ; Chromolaena chasleae ; Compositae ; Eupatorieae ; cadinene derivatives ; prostaglandin-like acid. ; sesquiterpenes

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)95269-5

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6

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Sesquiterpenes and a dimeric spiroketone from Cineraria fruticulorum

Bohlmann, F. ; Singh, P. ; Jakupovic, J.

Amsterdam : Elsevier

Phytochemistry 21 (1982), S. 2531-2535

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ISSN: 0031-9422

Keywords: C. parvifolia ; Cineraria fruticulorum ; Compositae ; cinalbicol derivatives ; dimeric spiroketone ; hydroxymyrtenol. ; new carbon skeleton ; sesquiterpenes ; spathulenol derivatives ; γ-humulene derivatives

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(82)85251-5

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7

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Lysogeny in the blue-green algaNostoc muscorum (1978)

Padhy, R. N. ; Singh, P. K.

Springer

Archives of microbiology 117 (1978), S. 265-268

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ISSN: 1432-072X

Keywords: Nostoc muscorum ; Blue-green Algal virus ; N-1 ; Lysogeny ; Induction ; Heat ; Mitomycin C

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract Lysogens were isolated after confluent lysis of the blue-green algaNostoc muscorum by N-1 virus and characterised. The spontaneous liberation of active virus particles in lysogens was not lost after treating them with viricidal concentration of EDTA and virus titre obtained in their cultures was 〉5×103 PFU/ml. The virus adsorbed on the lysogens with a slower rate than on parent alga, although it followed the pattern of a first order reaction. The heat treatment (45°C for 14h) of the lysogens failed to induce lysis, whereas mitomycin C (1–2 μg/ml) was effective in inducing lysis.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00738545

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8

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Effects of host aging, ions, and pH on the adsorption of the cyanovirus N-1 to Nostoc muscorum (1978)

Padhy, R. N. ; Singh, P. K.

Springer

Archives of microbiology 116 (1978), S. 289-292

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ISSN: 1432-072X

Keywords: Blue-green algal virus N-1 ; Adsorption ; Host cell aging ; Killed cells ; Saline magnesium chloride solution ; Amino acids ; pH ; Nostoc muscorum

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract The adsorption rate of the cyanovirus N-1 infecting the nitrogen-fixing blue-green alga Nostoc muscorum decreased with aging of algal cultures and the virus failed to adsorb to the dead host cells. The adsorption rate declined in saline magnesium chloride solution compared to that in algal growth medium. The addition of amino acids like L-tryptophan and L-phenylalanine failed to enhance the adsorption rate of the virus. Optimal pH of adsorption was 7.6 to 8.1.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00417853

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9

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Effect of temperature on the adsorption and one-step growth of the Nostoc virus N-1 (1977)

Padhy, R. N. ; Singh, P. K.

Springer

Archives of microbiology 115 (1977), S. 163-167

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ISSN: 1432-072X

Keywords: Nostoc virus N-1 ; Temperature ; Adsorption ; One-step growth ; Viral development ; Nostoc muscorum

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract This study was an attempt to observe the effects of temperature on adsorption and one-step growth of the virus N-1 infecting the nitrogen-fixing cyanobacterium Nostoc muscorum. Adsorption rate was found to be maximum at 40° C whereas no adsorption occurred at 10° C. The Q 10 value was about 2.03 and the energy of activation, Ea was 16.3 kcal/ mole for the adsorption process. The development cycle of the virus was temperature sensitive. With increase in temperature, a gradual increase in inhibition of virus yield i.e. 8.33% at 30° C, 35.3% at 35° C and complete inhibition at 40° C was observed. Out of 7 h latent period, the early 4 h were temperature sensitive and heat treatment had a reversible inhibitory effect on virus development. The temperature treatment did not affect the rise period but burst-size was reduced.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00406370

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10

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Growth and acetylene reduction activity ofAzolla caroliniana Willd. as influenced by split applications of urea fertilizer and their response on rice yield (1988)

Manna, A. B. ; Singh, P. K.

Springer

Nutrient cycling in agroecosystems 18 (1988), S. 189-199

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ISSN: 1573-0867

Keywords: Azolla caroliniana ; N2-fixation ; rice yield ; crop N uptake

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Abstract Experiment with different split applications of 40 kg N ha−1 of urea (U) at transplanting:30 days after transplanting:40 days before crop maturity with different proportions of 50:25:25, 25:50:25 and 0:50:50 splits, with and without Azolla, carried out for two consecutive seasons, revealed that fresh weight (FW), N2-fixation measured by acetylene reduction activity (ARA) and N yield of newly introducedAzolla caroliniana were higher with 0:50:50 treatment followed by 25:50:25 and 50:25:25.Azolla was unincorporated and left for self decomposition. The crop yield (grain yield, straw yield) and crop N uptake data indicated that among the no Azolla treatments, the use of 50:25:25 split resulted in highest crop yield and crop N uptake followed by 25:50:25 and 0:50:50 treatments, while these parameters recorded maximum value with 25:50:25 split in combination with Azolla followed by 50:25:25 and 0:50:50 treatments. The use of Azolla increased crop yield and crop N uptake significantly over no Azolla treatments.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01049513

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