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91.
Cheryl L. Vargo Susan M. Taylor Anthony Carr Marion L. Jackson 《Canadian journal of veterinary research》2009,73(2):132-136
The low molecular weight heparin (LMWH), dalteparin sodium, was administered subcutaneously (100 IU/kg) to 8 healthy cats twice daily for 13 doses. Anti-activated factor X (anti-Xa) activity was measured prior to administration (time 0), and 4, 6, 8, and 12 h after the 1st dose, 4 h after administration of the 3rd dose, and at 4, 6, 8, and 12 h after the last dose. Four cats developed measurable anti-Xa activity 4 h following a single dose, returning to baseline by 6 h. Anti-Xa activity was not detected at any time point in 4 cats. Prothrombin time (PT), activated partial thromboplastin time (APTT), and antithrombin (AT) concentrations were unaffected by LMWH administration. Dalteparin, at 100 IU/kg SC, did not achieve anti-Xa activity in 4 out of 8 cats and failed to maintain anti-Xa activity beyond 4 h in the other 4 healthy cats. 相似文献
92.
A methodology and apparatus have been proposed to indirectly evaluate twist liveliness of spun yarns by measuring the number
of snarl turns formed of a yarn submerged in a water bath. A comparative study was carried out to evaluate the effectiveness
of water in the measurement of yarn snarls. T tests showed that water has a significant effect in the snarl forming and testing
results. Systematic studies were then carried out in the intra and inter laboratories to evaluate the feasibility and accuracy
of the proposed measurement system. The analysis of variance (ANOVA) for the studies showed that there is no significant difference
in measuring twist liveliness between the operators in the same laboratory and between the operators from different laboratories,
respectively. The largest variance in the tests is attributed to the expected variation in the level of snarl turns in different
yarn specimens. The experimental results showed that the developed yarn snarling apparatus has made accurate and repeatable
measurements of twist liveliness over a range of 100 % cotton ring spun yarn counts. 相似文献
93.
Diversity of water use efficiency among Quercus robur genotypes: contribution of related leaf traits
Magali Roussel Didier Le Thiec Pierre Montpied Nathalie Ningre Jean-Marc Guehl Oliver Brendel 《Annals of Forest Science》2009,66(4):408-408
94.
Micro-fading spectrometry is a technique that combines visible reflectance spectroscopy and accelerated light aging testing. Therefore, it is a useful tool for determining the light-stability of dyes applied on textile substrates in a relatively short amount of time. Traditional accelerated light aging methods usually require controlling many variables such as time and intensity of illumination, correct positioning of the sample during irradiation, and reproducible spot selection for each subsequent spectrocolorimetric measurement. The use of micro-fade testing as an alternative way of conducting light-fastness assessments of dye/textile systems has been explored. The results indicate that the technique is suitable for testing the color stability of cultural heritage materials and industrially manufactured textiles since it is a direct and non-contact method that takes into account the aforementioned experimental variables. 相似文献
95.
Dilini N. Thilakaratne Monique N. Mayer Valerie S. MacDonald Marion L. Jackson Brenda R. Trask Beverly A. Kidney 《The Canadian veterinary journal. La revue veterinaire canadienne》2010,51(1):79-84
Polymerase chain reaction (PCR) assays for the immunoglobulin and T-cell receptor genes were utilized to determine phenotype and clonality from lymph node cytologic smears and peripheral blood lymphocytes from 10 dogs with lymphoma, before chemotherapy and during remission. Results were compared with those from 13 dogs with a cytologic diagnosis of lymph node hyperplasia. Clonality was identified in 7 of the lymphomas on the basis of either lymph node cytology or peripheral blood lymphocytes before treatment. No lymph node hyperplasia samples were clonal. In 6 of the dogs with lymphoma, clonality was demonstrated during clinical remission. Detection of PCR clonality during clinical remission is an effective means of identifying minimal residual disease in canine lymphoma and thus additional work is warranted to determine if molecular remission is prognostic or predictive for outcome in well-controlled and well-defined lymphoma subtypes. 相似文献
96.
In Cameroon, cocoa trees are mostly grown in forests and without fertilization. Our aim was to learn more about the temporal
dynamics of soils in cocoa agroforests by comparing young (1–4 years old) and old (over 25 years old) cocoa agroforests. Short
fallow and secondary forest were used as treeless and forest references. The numbers and diversities of soil vesicular arbuscular
mycorrhizal (VAM) fungi on 60 cocoa producing farms in the Central province of Cameroon were assessed based on the classical
morphotyping of spore morphology. We also observed the soil organic matter, nitrogen and major soil nutrients. VAM spore density
was significantly lower in the young cocoa agroforests (16 spores g−1 dry soil) than in the old cocoa agroforests (36 spores g−1 dry soil). Levels in the nearby secondary forest (46 spores g−1 dry soil) were not significantly different from old cocoa. The spore density was significantly highest in the short fallow
(98 spores g−1 dry soil). The Shannon–Weaver index also showed significantly lower biodiversity in young cocoa (0.39) than in old cocoa
agroforests (0.48), secondary forest (0.49) and short fallow (0.47). These observations were supported by significant differences
in the C:N ratio, Ca, Mg, and cation exchange capacity between young and old cocoa agroforests. We concluded that unfertilized
cocoa agroforests could be sustainable, despite a decrease in some soil characteristics at a young stage, due to traditional
land-conversion practices based on selective clearing and burning of secondary forest. 相似文献
97.
Bhavanath Jha Mukund C. Thakur Iti Gontia Valerie Albrecht Marion Stoffels Michael Schmid Anton Hartmann 《European Journal of Soil Biology》2009,45(1):62-72
A diversity of N2-fixing (diazotrophic) bacteria was isolated from two traditional rice cultivars, Sataria and Kartiki, from the rice growing area of Mithila region of North Bihar, India, where low levels of nitrogen fertilizers are applied. Nitrogen-free semisolid media NFb, JMV and LGI with different carbon sources and pH-values were used for enrichment and isolation of root-associated diazotrophs. The colonization density of roots by diazotrophs, as estimated from positive pellicle formation at highest dilution in nitrogen-free enrichment media, was 106–108 diazotrophic bacteria per g fresh root weight. Roots of the cultivar Kartiki were found to be more densely colonized endophytically by diazotrophs as detected after chloramine T (1%) surface disinfection. To ascertain the phylogenetic affiliation of the isolates, phylogenetic oligonucleotide probes and the Fluorescent in situ Hybridization (FISH) technique were applied. Using group-specific rRNA directed oligonucleotide probes, the majority of the isolates could be identified as alpha-, beta-, or gamma-proteobacteria. Using 16S and 23S rRNA-directed genus- or species-specific probes, Herbaspirillum seropedicae, Azospirillum amazonense, Burkholderia cepacia/vietnamiensis, Rhizobia and Pseudomonas spp. were found to be the most prominent root associated culturable diazotrophs. Diazotrophic Gluconacetobacter spp. were also demonstrated as colonizers of rice roots. Burkholderia cenocepacia, Pseudomonas sp. and three diazotrophic PGPR reference strains were used for the inoculation of axenically grown rice seedlings to determine the plant growth promoting potential. Significant increases in the shoot length (up to 60%), shoot dry weight (up to 33%) and the grain yield (up to 26%) per plant were observed in non-axenic pot and field trials. Using semisolid enrichment media after surface sterilization of field grown inoculated rice roots and oligonucleotide probing of the diazotrophic enrichment cultures, a sustainable colonization with the inoculated bacteria could be demonstrated. 相似文献
98.
Bernard Tivoli Agnès Calonnec Benjamin Richard Bertrand Ney Didier Andrivon 《European journal of plant pathology / European Foundation for Plant Pathology》2013,135(3):471-478
To reduce the use of pesticides, innovative studies have been developed to introduce the plant as the centre of the crop protection system. The aim of this paper is to explain how architectural traits of plants and canopies induce a more or less severe epidemic and how they may be modified in order to reduce disease development. In particular, it focuses on three key questions: i) which processes linked to epidemics can be influenced by architecture ii) how can architecture be characterized relative to these modes of action, and iii) how can these effects be explored and exploited? The roles of plant/canopy architecture on inoculum interception, on epidemic development via the microclimate and on tissue receptivity are discussed. In addition, the concepts of disease avoidance, canopy porosity and an ideotype unfavourable for disease development are described. This paper shows that many advances have already been made, but progress is still required in four main fields: microclimatology, mathematical modelling of plants, molecular genetics and ideotype conception. 相似文献
99.
100.