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
    Methane emission from flooded rice fields under irrigated conditions (1994)
    Springer
    Biology and fertility of soils 18 (1994), S. 245-248 
    Details
    ISSN: 1432-0789
    Keywords: Methane emission ; Flooded rice field ; Varietal variation ; Root oxidase activity ; Diurnal variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In a study on CH4 emission from flooded rice fields under irrigated conditions, fields planted with rice emitted more methane than unplanted fields. The CH4 efflux in planted plots varied with the rice variety and growth stage and ranged from 4 to 26 mg h-1m-2. During the reproductive stage of the rice plants, CH4 emission was high and the oxidation power of rice roots, in terms of α-naphthylamine oxidation, was very low. The CH4 emission reached a maximum at midday and declined to minimum levels at midnight, irrespective of the rice variety. The peak CH4 emission at midday was associated with higher solar radiation and higher soil/water temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647675
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Equivalence of a magnetohydrodynamic fluid and a viscous fluid with heat flux (1985)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 26 (1985), S. 2840-2846 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: In this paper the equivalence between a perfect fluid with electromagnetic field and a viscous fluid with heat flux is considered. Heat flux, shear tensor, and other fluid parameters are readily calculated out of the magnetohydrodynamic fluid parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.526709
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of cyclosporine on fertility in male rats (1998)
    Springer
    Pediatric surgery international 13 (1998), S. 388-391 
    Details
    ISSN: 1437-9813
    Keywords: Key words Cyclosporine ; Male fertility ; DNA flowcytometry ; Rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of cyclosporine (CsA) on fertility has assumed greater importance with the increasing numbers of pediatric transplantations being performed all over the world. Conflicting reports on the effects of CsA on sex hormones are available. This experimental animal study was designed to examine the effect of CsA on testicular weight, sperm counts, seminiferous tubular diameter (STD), testicular morphology, DNA flowcytometry, sex hormone levels, and fertility in male rats. Those rats who received CsA (20 mg/kg per day) showed significant reductions in testicular weight (P 〈 0.05), sperm count (P 〈 0.01), Johnsen score (P 〈 0.05), STD (P 〈 0.01), serum testosterone levels (P 〈 0.05), haploid cell population (P 〈 0.001) in the testis, and fertility (P 〈 0.001) compared to those receiving CsA 10 mg/kg per day and control rats. These findings will have an important bearing for children receiving cyclosporine for long periods to guide the physician in optimally adjusting long-term treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050346
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Fertility and unilateral undescended testis in the rat model II (1998)
    Springer
    Pediatric surgery international 13 (1998), S. 392-395 
    Details
    ISSN: 1437-9813
    Keywords: Key words Fertility ; Unilateral undescended testis ; DNA flowcytometry ; Anti-sperm antibodies ; Rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Continuing experimental work on the effect of experimentally created unilateral undescended testis (UL-UDT) in neonatal rats, this study examined the fertility and correlated it to contralateral (CL) testicular morphology, seminiferous tubular diameter (STD), DNA flowcytometry, and the presence of serum anti-sperm antibodies (ASA) at 120–135 days of age. In our previous reported work, the fertility of rats with UL-UDT at 65–80 days of age was the same as that of controls. In the present study the rats with UL-UDT had significantly reduced fertility (P 〈 0.01) compared to controls, even though the Johnsen scores and mean STD of the CL testicular tissue were comparable. DNA flowcytometry demonstrated a significant decrease (P 〈 0.001) in haploid cell population in the CL testicular tissue of rats with UL-UDT. Furthermore, the rats with UL-UDT who either received an immunosuppressive or in whom the UDT was excised early showed almost normal fertility and DNA histograms like those of controls. Significantly high titres of serum ASA were detected only in the group with UL-UDT when tested at 135 days of age. From these results, in combination with earlier results on similar work, it may be inferred that UL-UDT causes immunologically-mediated, progressive damage to the CL descended testis, leading to a decrease in fertility in rats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050347
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    T-lymphocyte subsets in the contralateral testis after unilateral blunt testicular trauma in pre-pubertal mice (1999)
    Springer
    Pediatric surgery international 15 (1999), S. 238-239 
    Details
    ISSN: 1437-9813
    Keywords: Key words Testicular trauma ; T-lymphocytes ; Mice ; Testis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Although spermatozoa express antigens, they normally do not produce an immunological response because of the blood-testis barrier and the predominance of CD8+ T-lymphocytes in the rete testis. Unilateral blunt testicular trauma (UBTT) has been reported to decrease fertility. The present study was designed to evaluate the sub-populations of T-lymphocytes in mice with testicular trauma. Twenty male mice aged 20 days were randomized into control and test groups. At about 70 days of age the contralateral testis was harvested, cell suspensions were prepared, and immunofluorescence staining was performed for detection of CD4+ and CD8+ T-lymphocytes by flow-cytometry. The ratio of CD8+ and CD4+ lymphocytes was significantly higher (P 〈 0.001) in the control mice compared to the UBTT group (1.3 ± 0.3 vs 0.5 ± 0.01). The results suggest that UBTT alters the CD8+/CD4+ ratio in the contralateral testis, which may have an important bearing on the pathogenesis of infertility in cases of testicular injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050565
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Experimental unilateral undescended testis: gubernaculectomy and anchoring or direct suture fixation? (1999)
    Springer
    Pediatric surgery international 15 (1999), S. 461-464 
    Details
    ISSN: 1437-9813
    Keywords: Key words Unilateral undescended testis ; Rat ; Testicular injury ; DNA flowcytometry ; Anti-sperm antibody
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study was designed to evaluate whether creation of a unilateral undescended testis (U/L UDT) in rats by direct fixation of the testis can lead to changes in the contralateral (C/L) descended testis, and if so, whether this inherent problem of the model could be eliminated by anchoring the divided gubernaculum to indirectly fix the testis. Thirty male newborn rats were divided into three groups of 10 each and the procedure done on the 2nd day of life to create U/L UDT according to the group allocated: group I: sham-operated; group II: anchoring the gubernaculum after gubernaculectomy; group III: Direct suture fixation of the testis. Fertility, C/L testicular weight (TW), Johnsen score, seminiferous tubular diameter (STD), DNA flowcytometry, and serum anti-sperm antibodies (ASA) were studied. Fertility, C/L TW, Johnsen score, STD, and haploid cell population were significantly reduced in group III compared to group II, while significantly higher titers of ASA were found in group III. Gubernaculectomy and anchoring the gubernaculum to the anterior abdominal wall is a better technique of creation of experimental UDT, as direct fixation of the testis is potentially detrimental to the C/L normal, descended testis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050638
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Growth response of nodule bacteria to phytohemogglutanin (1967)
    Springer
    Cellular and molecular life sciences 23 (1967), S. 784-785 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird gezeigt, dass kristallines Phytohaemagglutanin (PHA) oder Rohextrakt aus PHA enthaltenden Zuckerbohnen (Phaseolus vulgaris) das Wachstum vonRhizobium dadurch beeinflusst, dass die Lagphase der Wachstumskurve verkürzt, die logarithmische Phase aber verlängert wird. Die PHA-Wirkung ist deutlicher bei denRhizobium-Linien, die in den Wurzelknöllchen des Wirts an PHA nicht adaptiert sind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02154178
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Quark masses (1983)
    Springer
    International journal of theoretical physics 22 (1983), S. 895-898 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Because of the observed similarity between leptons and quarks, any lepton mass formula can be applied with proper modification to estimate the quark masses. In this work such an application of Rosen's (1978) lepton mass formula is attempted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02080474
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Rishon constituents of higher-generation leptons and a global conservation law (1986)
    Springer
    International journal of theoretical physics 25 (1986), S. 247-253 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper offers a model-independent approach for the rishon assignments of higher-generation leptons and simultaneously a conservation law that seems to account for all the particle decays observed so far without considering the baryon and several lepton conservation laws.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00668707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Attendant changes in the bacterial flora of rice rhizosphere as influenced by fertilizer treatment (1975)
    Springer
    Plant and soil 42 (1975), S. 359-365 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effect of six different combinations of inorganic fertilizers and farm yard manure incorporated in soil on the bacterial flora in rhizosphere or a transplanted paddy, variety ‘Rajeswari’, was observed at tillering, pre-flowering and grain formation stages. The bacterial population of rhizosphere in both treated and untreated soils was significantly higher (91.5×106/g) than that found in corresponding non-rhizosphere soils (10.3×106/g). In rhizosphere soils there was no discernable trend in change of bacterial population with varying fertilizer levels. Lower numbers of aerobic heterotropic bacteria were encountered in unfertilized non-rhizosphere soils and those receiving low levels of amendments (8.3×106/g) than in soils receiving high levels of nutrients (12.3×106/g). Further, a study of nutritional requirements showed that bacteria requiring simple nutrition predominated in the rhizosphere of unamended soil (76.4 per cent) while those with complex nutritional requirement flourished in greater abundance (65.2 per cent) in rhizosphere of fertilized soils. re]19731129
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010011
    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...