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71.
J. C. M. Beijersbergen Catharina B. G. Lemmers 《European journal of plant pathology / European Foundation for Plant Pathology》1972,78(5):225-227
Samenvatting Beschreven wordt een biotest om de onverzadigde fungitoxische lactonen tulipaline A en B semi-quantitatief te bepalen in fracties verkregen na kolomchromatografie van ruw tulpenextract. De methode wordt toegepast als controle op de bepaling van de concentratie van op de kolom gescheiden tulipalines met behulp van UV spectrofotometrie. 相似文献
72.
73.
Liriomyza cicerina (Diptera: Agromyzidae) is an important pest on chickpea in Turkey. The objective of this study was to determine the parasitoids and rates of parasitism ofL. cicerina on chickpea (Cicer arietinum L.) during the 2005 and 2006 seasons in ?anl?urfa province, Turkey. Leaves with mines were sampled weekly and kept in the laboratory to observe and count emerging leafminer and parasitoid adults. Eight parasitoid species were collected: the braconidsOpius monilicornis Fischer andOpius tersus Foerster and the eulophidsDiaulinopsis arenaria (Erdös) andNeochrysocharis formosa (Westwood), which occurred in both the winter and summer seasons;Diglyphus crassinervis Erdös,Neochrysocharis ambitiosa Hansson,Neochrysocharis sericea (Erdös) andPediobius metallicus (Nees), which occurred only in the summer growing areas.Diaulinopsis arenaria was the predominant parasitoid with 4–7.7% parasitism rate whileN. ambitiosa andO. monilicornis were the second and third most predominant species. The results of these trials show that sinceDia. arenaria occurred throughout every season, it could potentially be used for control of the leafminerL. cicerina. 相似文献
74.
Louise K Sj?holm Leena Kovanen Sirkku T Saarikoski Martin Schalling Catharina Lavebratt Timo Partonen 《Journal of circadian rhythms》2010,8(1):1
Background
Depression and alcohol abuse or dependence (AUD) co-occur in the general population more frequently than expected by chance. Alcohol use influences the circadian rhythms generated by the central pacemaker in the suprachiasmatic nucleus, and circadian rhythm alterations in turn are common in depressive disorders as well as among persons addicted to alcohol. 相似文献75.
Mónica Hernández-Morcillo Claudia Bieling Matthias Bürgi Juraj Lieskovský Hannes Palang Anu Printsmann Catharina J. E. Schulp Peter H. Verburg Tobias Plieninger 《Landscape Ecology》2017,32(11):2083-2096
Context
The design of effective responses to safeguard cultural landscape values in Europe needs collaborative action among the stakeholders involved. Despite considerable progress triggered by the European Landscape Convention (ELC) and other initiatives to link landscape science, policy and practice, a joint research–action agenda is still lacking.Objectives and methods
We respond to this challenge by identifying common priority questions for the sustainable management of cultural landscapes in Europe. To this end, we gathered, in a first phase, the most relevant research questions through a Delphi-like process with the research community in this field. In a second phase, the questions were prioritized by three stakeholder groups: scientists (Ss), policy-makers (PMs) and practitioners (Ps). The importance ranks and the similarity between groups’ priorities were calculated and analyzed.Results
We found that the research question that addressed the issue of how to secure sustainable cultural landscapes where they are not economically profitable was the most important, with high level of agreement among all stakeholders. Alignment among the three groups was generally high; being higher between Ps–Ss and Ps–PMs than between Ss and PMs.Conclusions
Our exercise can assist the implementation of the ELC by outlining the potential direction of future applied research and by strengthening the ties between the multiple stakeholders involved in the stewardship of European cultural landscapes.76.
Jan H. Spaas Catharina De Schauwer Pieter Cornillie Evelyne Meyer Ann Van Soom Gerlinde R. Van de Walle 《Veterinary journal (London, England : 1997)》2013,195(1):107-113
Although the use of mesenchymal stromal cells (MSCs) for the treatment of orthopaedic injuries in horses has been reported, no official guidelines exist that classify a particular cell as an equine MSC. Given the limited characterisation of peripheral blood (PB)-derived equine MSCs in particular, this study aimed to provide more detailed information in relation to this cell type. Mesenchymal stromal cells were isolated from equine PB samples and colony forming unit (CFU) assays as well as population doubling times (PDTs) (from P0 to P10) were performed.Two types of colonies, ‘fingerprint’ and dispersed, could be observed based on macroscopic and microscopic features. Moreover, after an initial lag phase (as indicated by a negative PDT at P0 to P1) the MSCs divided rapidly as indicated by a positive PDT at all further passages. Immunophenotyping was carried out with trypsin- as well as with accutase-detached MSC to evaluate potential trypsin-sensitive epitope destruction on particular antigens. Isolated MSC were positive for CD29, CD44, CD90 and CD105, and negative for CD45, CD79α, MHC II and a monocyte/macrophage marker, irrespective of the cell detaching agent used. Trilineage differentiation of the MSCs towards osteoblasts, chondroblasts and adipocytes was confirmed using a range of histochemical stains. 相似文献
77.
Extract Madam:- We read the review by M.F. Tartellin (N.Z. vet. J. August 1985) of the above publication with interest and indeed we appreciate his dilemma. 相似文献
78.
Throat cutting associated with halal slaughter of bobby calves fails to sever the vertebral arteries supplying the brain. Such slaughter may be inhumane due to calves recovering from the stun before permanent insensibility, due to blood loss, occurs. Interruption of the vertebral arteries may be achieved by severance of the brachiocephalic trunk or penetration of the heart by the use of a ‘thoracic stick’, an incision with a knife through the thoracic inlet. 相似文献
79.
Mites for the control of pests in protected cultivation 总被引：2，自引：0，他引：2
The production of crops under protected conditions is increasing worldwide. Owing to growing consumer demands for healthy and green produce, and intensifying pesticide resistance, non-chemical solutions--foremost among which is biological control--are being sought. The authors review recent advances related to the application of predatory mites for the control of greenhouse pests, and discuss interactions among acarine biocontrol agents (ABAs) and the effects of crop plants and new technologies on ABAs, such as artificial lighting, elevated carbon dioxide levels and genetically modified organisms. This is followed by a discussion of the problems associated with the search for and use of new ABAs, including management, the benefits of modelling and avenues of future research. 相似文献
80.
Weintraub PG 《Pest management science》2007,63(8):753-760
Sweet pepper is now grown, in tropical and subtropical areas, under the integrated pest management (IPM) tactic of 'physical barrier', whereas it was once grown primarily in open fields. This management tactic, when properly employed, has the advantage of eliminating many of the larger open-field pests, and has resulted in greatly increased pepper yields. However, certain other pest populations are exacerbated by this IPM tactic. This paper reviews the primary pests and current control tactics in sweet pepper. 相似文献