In vitro evaluation of the inhibitory effect of canine serum,canine fresh frozen plasma,freeze–thaw‐cycled plasma,and Solcoseryl™ on matrix metalloproteinases 2 and 9          下载免费PDF全文

Derek W. Y. Chow  Ying Chau  Wai Kit Yeung  Hans D. Westermeyer 《Veterinary ophthalmology》2015,18(3):229-233

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Questions about the article: ‘Alfaxalone or ketamine–medetomidine in cats undergoing ovariohysterectomy: a comparison of intraoperative parameters and postoperative pain’          下载免费PDF全文

Hans Nieuwendijk 《Veterinary anaesthesia and analgesia》2015,42(3):339-339

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体重决定猪回肠内的蛋白吸收率     

J. A. Almei  Hans. H. Stein  Carsten Pedersen 《猪业科学》2015,(11):28-28

<正>近期伊利诺伊大学的J.A.Almeida博士、 Hans H.Stein博士以及Carsten Pedersen博士联手展开体重对于标准化回肠蛋白质和氨基酸吸收率的影响试验,结论证明,20 kg以下的仔猪回肠对于粗蛋白和氨基酸的吸收率比20~50 kg的育成猪和50~110 kg的育肥猪低。而且同一猪群的不同猪只也表现出吸收率的差异性。例如,在测定的300只仔猪中粗蛋白和氨基酸的吸收率  相似文献   

Overwintering potential of the invasive leafminer Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) as a pest in greenhouse tomato production in Western Europe     

Veerle Van Damme  Nick Berkvens  Rob Moerkens  Els Berckmoes  Lieve Wittemans  Raf De Vis  Hans Casteels  Luc Tirry  Patrick De Clercq 《Journal of pest science》2015,88(3):533-541

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Investigation of the allergenic potential of wines fined with various proteinogenic fining agents by ELISA     

Weber P  Steinhart H  Paschke A 《Journal of agricultural and food chemistry》2007,55(8):3127-3133

Hidden allergens are a common problem in food safety that has been known for many years. This is why the European Parliament adopted Directive 2003/89/EC amending 2000/13/EC. In addition to specific ingredients, Directive 2003/89/EC also requests the declaration of specific products that were used in the production and could be a risk for allergic individuals. This also includes the declaration of fining agents and lysozyme used in wines. In fact, it could be assumed that fining agents would be almost completely removed during the manufacturing process; however, until now there has been no necessity to analyze wine for these fining agents. By applying enzyme-linked immunosorbent assay (ELISA), residuals of fining agent proteins and the stabilizer lysozyme were investigated in various German wines. The results showed no detectable amounts of fining agents in wines, except for dried egg white and lysozyme, both derived from hen's egg white. For those products, adverse reactions against treated wines could not be excluded.  相似文献   

Nitrogen turnover and N2O production in the forest floor of beech stands as influenced by forest management     

Michael Dannenmann  Rainer Gasche  Hans Papen 《植物养料与土壤学杂志》2007,170(1):134-144

Effects of forest management (thinning) on gross ammonification, net ammonification, net nitrification, microbial biomass, and N₂O production were studied in the forest floor of adjacent untreated control (“C”) and thinned (“T”) plots in three beech (Fagus sylvatica L.) stands in the Swabian Jura (Southern Germany) during three intensive field campaigns in the year 2004. The investigated sites are located less than 1 km apart on the slopes of a narrow valley. Due to different exposure (southwest, northeast, northwest), the three sites are characterized by warm‐dry microclimate (southwest site, SW) and cool‐moist microclimate (northeast site, NE; and northwest site, NW). Measurements at the NW site covered the second year (13 to 20 months) after thinning, and measurements at the SW and NE sites covered the sixth year (61 to 68 months) after thinning. Mean gross ammonification varied insignificantly across the six plots (range: 37.5 ? 31.2 to 51.0 ? 10.5 mg N (kg dry soil)^–1 d^–1). The SW site was characterized by very low net nitrification and nitrate (NO ) concentrations that were not significantly different between control and thinned plot. In contrast, for the thinned plot at the NE site (NET), significantly increased mean net nitrification (2.3 ? 1.2 mg N (kg dry soil)^–1 d^–1 at the NET plot vs. 0.4 ? 0.2 mg N (kg dry soil)^–1 d^–1 at the NEC plot) and mean extractable NO concentrations (43.9 ? 22.8 mg N (kg dry soil)^–1 at the NET plot vs. 4.1 ? 0.8 mg N (kg dry soil)^–1 at the NEC plot) were observed. The differences in net nitrification and NO concentrations across the research plots were related to differences in the forest‐floor C : N ratios: net nitrification increased exponentially below a threshold C : N value of about 25. The results of this study indicate that the forest floor of the warm‐dry SW site is very resistant to N loss triggered by thinning due to high C : N ratios around 30. Under the cool‐moist microclimate of the NE site, a significantly lower C : N ratio of 22.1 at the thinned plot (control plot: 26.7) coincided with significantly increased net nitrification. Thus, different responses of net nitrification to thinning under different microclimate appear to be triggered by different C : N ratios. Nitrous oxide production was mainly governed by forest‐floor water content, and since differences in water content at adjacent control and thinned plots were low, N₂O production was not significantly different between adjacent control and thinned plots.  相似文献   

Agroforestry systems recover tree carbon stock faster than natural succession in Eastern Amazon,Brazil     

Cardozo  Ernesto Gómez  Celentano  Danielle  Rousseau  Guillaume Xavier  Silva  Hulda Rocha e  Muchavisoy  Henry Mavisoy  Gehring  Christoph 《Agroforestry Systems》2022,96(5-6):941-956

Agroforestry Systems - The potential of agroforestry systems (AFS) for atmospheric carbon sequestration in degraded tropical lands is of key interest for climate change and rural development...  相似文献   

Crown allometry and growing space requirements of four rare domestic tree species compared to oak and beech: implications for adaptive forest management     

Schmucker  Julia  Uhl  Enno  Steckel  Mathias  Pretzsch  Hans 《European Journal of Forest Research》2022,141(4):587-604

European Journal of Forest Research - Rare domestic tree species are increasingly being viewed as promising alternatives and additions to current main tree species in forests facing climate change....  相似文献   

Correction to: Silvicultural prescriptions for mixed-species forest stands. A European review and perspective     

Pretzsch  Hans  Poschenrieder  Werner  Uhl  Enno  Brazaitis  Gediminas  Makrickiene  Ekaterina  Calama  Rafael 《European Journal of Forest Research》2021,140(5):1295-1296

European Journal of Forest Research -  相似文献   

Gene and protein expression and cellular localisation of cytochrome P450 enzymes of the 1A, 2A, 2C, 2D and 2E subfamilies in equine intestine and liver     

Eva Tydén  Hans Tj?lve  Pia Larsson 《Acta veterinaria Scandinavica》2014,56(1)

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