Diagnosis of disseminated adenocarcinoma by bone marrow aspiration in a dog with leukoerythroblastosis and fever of unknown origin     

Henson KL  Alleman AR  Fox LE  Richey LJ  Castleman WL 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》1998,27(3):80-84

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Ernährungszustand der Douglasie (Pseudotsuga menziesii [Mirb.] Franco) auf dänischen und deutschen Standorten im Vergleich zu ihrem natürlichen Verbreitungsgebiet     

Kristin Baronius  H. J. Fiedler 《European Journal of Forest Research》1996,115(1):10-16

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Phylogenetic analysis of the SSU rRNA gene from the piscine diplomonad Spironucleus torosus (Diplomonadida: Hexamitinae)     

Jørgensen A  Alfjorden A  Henriksen K  Sterud E 《Folia parasitologica》2007,54(4):277-282

Previous studies have recorded Spironucleus torosus Poynton et Morrison, 1990 from several species of gadoid fishes, including the only freshwater gadoid, the burbot Lota lota (L.). Two morphologically different isolates of S. torosus have been described (elongate and pyriform). Both have been found in saltwater, while only the elongate has been found in freshwater. To address the conspecificity of the two morphs of S. torosus, and to identify the source of S. torosus in burbot in Norway, we have sequenced the small subunit ribosomal RNA (SSU rRNA) gene from 43 isolates of S. torosus from six species of gadoid fishes sampled at 15 localities in Norway, Sweden and the Baltic Sea. Phylogenetic analyses of the SSU rRNA gene sequence data recovered two major clades, one containing mainly isolates from burbot, while the other contained isolates from marine gadoid fishes only. The genetic distance (based on 25 nucleotide substitutions in 789 base pairs) separating the two assemblages was not large enough to consider the two groups separate species. Spironucleus torosus isolated from burbot displayed limited genetic variation in the small subunit ribosomal RNA (SSU rRNA) gene along the post-Pleistocene migration route of its host. The present study is the first report of S. torosus in tusk Brosme brosme (Ascanius), whiting Merlangius merlangus (L.), and fourbeard rockling Enchelyopus cimbrius (L.).  相似文献   

Microscopic examination of the intestinal wall and selected organs of minipigs orally supplemented with humic acids     

Kirsten Büsing  Mohamed Elhensheri  Kristin Entzian  Udo Meyer  Annette Zeyner 《Research in veterinary science》2014

Humic acids are used to prophylactically treat intestinal diseases in a wide number of species, yet the mechanism of action remains unknown. The general assumption has been that humic acids act locally; however studies using young piglets show orally supplemented humic acids can penetrate the intestinal wall, and thus potentially act systemically. The objective of this study was to determine if humic acids could also cross the intestinal barrier in adult pigs and be detected in other organs. Adult minipigs (>18 months old) orally received either 1 g humic acids/kg body weight (verum, n = 3) or placebo (control, n = 3), for 2 weeks. At the end of the feeding period tissue samples were harvested from the intestine, various glands and organs. Unstained tissue samples were examined by light microscopy for the presence of humic acid particles. No humic acid particles were detected in any of the unstained tissues from verum or control pigs.  相似文献   

Medium and Long Term Evaluation of Sliding Humeral Osteotomy in Dogs     

Kristin M. Wendelburg DVM  Brian S. Beale DVM  Diplomate ACVS 《Veterinary surgery : VS》2014,43(7):804-813

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Evaluation of local and systemic effects after intramuscular implantation of lead shot alternatives in rats     

Hoots EA  Renberg WC  Patton KM  Roush JK 《American journal of veterinary research》2007,68(4):446-452

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ESLab application to a boreal watershed in southern Finland: preparing for a virtual research environment of ecosystem services     

Maria Holmberg  Anu Akujärvi  Saku Anttila  Lauri Arvola  Irina Bergström  Kristin Böttcher  Xiaoming Feng  Martin Forsius  Inese Huttunen  Markus Huttunen  Yki Laine  Heikki Lehtonen  Jari Liski  Laura Mononen  Katri Rankinen  Anna Repo  Vanamo Piirainen  Pekka Vanhala  Petteri Vihervaara 《Landscape Ecology》2015,30(3):561-577

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Tree plantations on farms: Evaluating growth and potential for success     

Jefferson S. Hall  Brian E. Love  Eva J. GarenJacob L. Slusser  Kristin SaltonstallShane Mathias  Michiel van BreugelDiogenes Ibarra  Edward W. BorkDean Spaner  Mark H. WishnieMark S. Ashton 《Forest Ecology and Management》2011,261(10):1675-1683

Interest in native species is growing across the tropics as reforestation of degraded lands becomes more widespread. In this study four tree species native to Panama - Cedrela odorata, Pachira quinata, Samanea saman, and Tabebuia rosea - were grown on rural farms at two dry tropical sites in Panama for up to five years. Survivorship and growth data at these “on-farm” trials are compared to data recorded from nearby experimental or “species selection” trial sites and evaluated in terms of soil fertility and management. Participant farmers were also asked about their interest in planting trees in general as well as their interest in 61 species grown in the species selection trial.Although, on-farm survivorship was variable and generally lower than that found on the species selection trial, one species (S. saman) experienced high and consistent survivorship. High survivorship combined with growth data from farms at both sites for this species suggests it would be a good candidate for extension projects working with rural farmers. Survivorship of other species appears more sensitive to farmer management and/or local site conditions. Generally lower growth on the Los Santos farms as compared to the species-selection trial is attributed to the lower soil fertility (plant available P) at the on-farm sites compared to the species selection trial. In contrast, only one species - P. quinata - had a growth variable found to be significantly lower between the on-farm and species selection trial sites in Rio Hato. C. odorata, P. quinata T. rosea can all be used in on-farm conditions with consideration to specific site and management conditions.By 2009, approximately 80% of the farmers planting trees still wished to participate in tree planting activities. All of the farmers no longer wishing to continue with the project expressed slow growth rates of trees as a principal reason. All but one of these farmers had growth rates for his/her trees markedly below those of the species selection trial nearby. Some farmers wishing to continue had very high mortality rates (>70% for all species), suggesting non-tangible benefits for participating in project activities. Other species that were not tested on-farm but grew well in the species-selection trials and were of interest to local farmers are discussed.As long as specific site and management conditions are carefully considered, data from species selection trials can be useful in informing tree planting projects with rural farmers; however, care should be taken to manage expectations.  相似文献   

30,000 years of hydrothermal activity at the lost city vent field     

Früh-Green GL  Kelley DS  Bernasconi SM  Karson JA  Ludwig KA  Butterfield DA  Boschi C  Proskurowski G 《Science (New York, N.Y.)》2003,301(5632):495-498

Strontium, carbon, and oxygen isotope data and radiocarbon ages document at least 30,000 years of hydrothermal activity driven by serpentinization reactions at Lost City. Serpentinization beneath this off-axis field is estimated to occur at a minimum rate of 1.2 x 10(-4) cubic kilometers per year. The access of seawater to relatively cool, fresh peridotite, coupled with faulting, volumetric expansion, and mass wasting processes, are crucial to sustain such systems. The amount of heat produced by serpentinization of peridotite massifs, typical of slow and ultraslow spreading environments, has the potential to drive Lost City-type systems for hundreds of thousands, possibly millions, of years.  相似文献   

Systems of knowledge as systems of domination: The limitations of established meaning     

Kristin Cashman 《Agriculture and Human Values》1991,8(1-2):49-58

The hegemony of Western science, inherent in international development projects, often increases the poverty and oppression of Third World women by pre-empting alternative realities. In African and Asian agrarian societies women grow from 60 to 90% of the food (World Bank, 1989); they hold incredible potential to increase food production. Their ability to operate under more marginal conditions than their male counterparts would seem to indicate that they have developed valuable knowledge— knowledge often generated in response to limited access to the more tangible resources offered by development assistance to male farmers. Recognizing the marginalization of women in the Third World, the Women in Development (WID) network was established during the 1970's to produce knowledge about women, fill in the gaps, and set the record straight. But knowledge creation for these purposes leaves underlying paradigms of Western science-based development unquestioned. Research from a feminist standpoint is used to challenge the objectivity and reliability of EuroAmerican development science. To date, WID has documented and analyzed the causes and consequences of Third World women's oppression with no substantial results to end them. Alternatively, feminist research validates women's perceptions of their reality, helping ordinary people to understand the connections between their experiences and broader social, economic, and political struggles. The paper emphasizes research pursued in order to act, closely linking knowing to doing to promote the emancipation of oppressed groups. A feminist standpoint is used to privilege the perspective of rural women in developing countries and ask: “What are the implications of the standard EuroAmerican approach to science for maximizing the potential contributions of rural women to agricultural development?” Some of these implications are illustrated with examples from on-farm research in Nigeria. To some extent, implications can be addressed by constructing meanings to structure a symbolic framework that includes female farmers and other disadvantaged groups.  相似文献