Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Consanguineous syntheses of polymethyl-substituted 1H-, 3aH-, and 5H-indenes from arylallyl alcohols (1983)
    s.l. : American Chemical Society
    The @journal of organic chemistry 48 (1983), S. 309-315 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00151a007
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Dimethylcyclodecyl cations. Evidence for .mu.-hydrido bridging (1981)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 103 (1981), S. 588-596 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00393a015
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    IMF effects on short-period fluctuations at low latitudes (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 517-518 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As the variations in the equatorial region are highly time-dependent, pairs of low-latitude and equatorial stations have been chosen for analysis from widely separated longitudinal zones-American zone (Huancayo, Fuquene), African zone (16DIR, lat. 9.6N, long. 41.87?, dip. lat. 0.20, a temporary ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272517a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    High-resolution diffuse X-ray scattering study from nearly perfect silicon single crystals (1979)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 35 (1979), S. 286-295 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: High-resolution measurements of diffuse X-ray scattering (DXS) have been made at and above room temperature around 111, 333, 444 and 555 reciprocal lattice points (relps) using highly collimated Mo Kα1 and Cu Kα1 radiations with the specimen set in (1, -1, 1) symmetrical Bragg geometry. The distribution of DXS intensity around different relps has shown that at temperatures up to at least 573 K the contribution of thermal DXS to the observed DXS is very small. This is apparently due to the high value of the Debye temperature (640 K) of silicon. A remarkable feature of these results is that for the same value of the scattering vector |K*| the DXS intensity is different for the parallel and antiparallel orientations of K* relative to R*. The amount of anisotropy varied from sample to sample and depended on the thermal history of the specimen. This and the other features show that the observed DXS is predominantly due to point defects and their aggregates. A typical size parameter for the aggregates is 3000 to 10 000 Å.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739479000607
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Study of point-defect aggregates in nearly perfect silicion single crystals using a high-resolution diffuse X-ray scattering technique (1980)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 178-182 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: High-resolution diffuse X-ray scattering (DXS) measurements have been made on dislocation-free silicon single crystals of the following types: (1) as-grown specimen with no heat treatment (labelled as NHT); (2) specimen heated at 1273 K under oxygen for 10 h [labelled as HT(1)] and (3) specimen heated at 1273 K under oxygen for 50 h [labelled as HT(2)]. Reciprocal space around the 111 reciprocal-lattice point in (1,-1,1) geometry has been explored using a Cu Kα exploring beam. From the distribution of DXS intensity it was found that for sample NHT, the observed DXS is predominantly due to aggregates of vacancies. Heating the specimen under oxygen produces defect aggregates of interstitial type. Infrared absorption measurements showed that the area under the 9 μm absorption band decreases, suggesting that oxygen ions aggregate into clusters of interstitial type. Transmission X-ray topographs also support these results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739480000381
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Isolation and partial characterization of cuticular collagen from the parasitic nematodeGaigeria pachyscelis (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 719-720 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The cuticle from adultGaigeria pachyscelis was isolated by solubilizing the internal tissues with sodium dodecyl sulphate (SDS) at 37°C. Cuticular protein was extracted with guanidine-HCl and β-mercaptoethanol and purified by ammonium sulphate fractionation and DEAE-cellulose chromatography. SDS-polyacrylamide gel electrophoresis of purified protein revealed 2 polypeptides with apparent mol. wts of 58,000 and 74,000. As judged from their hydroxyproline content both of them are collagenous in nature. Results of gel filtration indicate that cuticular collagen exists in two forms, a non-associated form at low concentration and an associated form at high concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949742
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Determination of threshold value of iron in soils and plants for the response of rice and lentil to iron application in calcareous soil (1984)
    Springer
    Plant and soil 82 (1984), S. 141-148 
    Details
    ISSN: 1573-5036
    Keywords: Calcareous soil ; DTPA-extractable iron ; Iron ; Lentil ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a pot experiment with 26 calcareous soils, the critical limit of Fe in soils and plants was evaluated. DTPA-extractable Fe was found significanty correlated with Bray's per cent yield in rice. The Fe2+ (iron) in rice and lentil was also found significantly correlated with DTPA-extractable Fe as well as Bray's per cent yield showing thereby the superiority of Fe2+ (iron) in leaves over DTPA-extractable soil Fe to differentiate Fe responsive soils from non-responsive ones. The total Fe content in plant tissues does not seem correlated with the occurrence of Fe deficiency. The threshold values of DTPA-extractable soil Fe and Fe2+ (iron) in rice and lentil leaves were 6.95, 44 and 74.5 ppm, respectively below which appreciable responses to Fe application were observed. The optimum Fe level for these soils was found to be 10 ppm in which the dry matter yield response in all the 19 rice soils and 16 lentil soils ranged from 14.28 to 56.16 (Av. 25.75%) and 13.31 to 53.97 (Av. 22.47%), respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02220778
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Determination of critical limit of zinc in soil and plant for predicting response of rice to zinc application in calcareous soils (1982)
    Springer
    Plant and soil 66 (1982), S. 129-132 
    Details
    ISSN: 1573-5036
    Keywords: Calcareous soil ; Critical limit ; Rice Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The DTPA-extractable Zn in 23 calcareous soils ranged from 0.34 to 3.42 ppm and the total Zn in rice leaves of control pots ranged from 15 to 50 ppm. The soil available Zn was negatively correlated with pH (r=−0.41*) and positively correlated with organic carbon (r=0.71**)_and rice tissue Zn concentration (r=0.98**). The Bray's per cent yield ranged from 29.12 to 126.36 and was positively correlated with available Zn (r=0.93**) and plant tissue Zn (r=0.91**). The critical Zn concentration in soil and plant below which plant response to Zn application to the soil may be expected, was 0.78 and 19 ppm respectively. In all the soils testing below 0.78 ppm Zn plants responded to Zn application and the per cent mean response at 5 and 10 ppm added Zn levels was 101.21 and 111.38 respectively. A negative response to applied Zn was recorded in soils of the high Zn group where the per cent mean response at 5 and 10 ppm added Zn was −14.90 and −33.78 respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02203412
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Relative effectiveness of various types and methods of zinc application on rice and maize crops grown in calcareous soil (1983)
    Springer
    Plant and soil 73 (1983), S. 315-322 
    Details
    ISSN: 1573-5036
    Keywords: Organic manures ; Residual effects ; Rice ; Yield ; Zinc application ; ZnO suspension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Application of zinc sulphate mixed with compost/poultry manure proved to be equivalent to the effect of dipping the seedling roots in 4% ZnO suspension with respect to rice yields but Zn-amended organic manures were superior to other treatments with regards to total Zn uptake. A marked residual effect of soil applied treatments was recorded on the succeeding maize crop. Application of poultry manure alone was about one and a half times more effective than compost alone in increasing the rice and maize grain yields. Poultry manure surpassed compost in increasing zinc uptake by the crops and at the same time it built up more available Zn in soil than compost for the following crop. The magnitude of yields and Zn uptake response were magnified when zinc sulphate was applied along with organic manures. Application of 25 kg zinc sulphate/ha alone had the same effect as 50 quintals poultry manure alone or 12.5 kg zinc sulphate applied with 50 quintals compost/ha with respect to crop yields. A significant positive correlation was, recorded in both the crops between Zn concentration in grain or straw and their respective yields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184307
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Assessment of some extractants for available zinc in relation to response of rice to applied zinc in Sub-Himalayan hill and forest soils (1984)
    Springer
    Plant and soil 79 (1984), S. 417-428 
    Details
    ISSN: 1573-5036
    Keywords: Extractants for available Zn ; Hill and forest soils ; Rice ; Threshold value ; Zinc response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The available Zn in 25 soils of Sub-Himalayan hill and forest region was determined by using some chemical extractants to evaluate its critical limit in soils and rice plant. The critical limit of soil available Zn using DTPA-CaCl2, DTPA-NH4HCO3, EDTA-NH4OAc and EDTA-(NH4)2CO3 was 0.76, 0.86, 0.85 and 1.18 ppm, respectively. The amount of Zn extracted by these extractants was positively and significantly correlated with per cent dry matter yield. In addition to per cent dry matter yield, the Zn extracted by DTPA-CaCl2, DTPA-NH4 HCO3 and EDTA-(NH4)2CO3 was also positively correlated with Zn concentration in 3rd leaf of rice, Zn concentration in rice shoots, Zn uptake by rice shoots and organic carbon content of the soil, and negatively correlated with soil pH.The 2N MgCl2 and 0.1N HCl extractants were found to be not suitable for these soils. Among the four promising extractants, EDTA-(NH4)2CO3 was most efficient as the value of critical limit determined by it expressed 82.4% predictability in the degree of accuracy against 36.8% with EDTA-NH4OAc. Hence EDTA-NH4OAc is the least efficient extractant for estimation of available Zn in such soils. The critical Zn concentration in 3rd leaf of rice was worked out to be 21.5 ppm below which economic responses to Zn application can be expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184332
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...