Congenital meningocele-encephalocele in an experimental swine herd     

D W Vogt  M R Ellersieck  W E Deutsch  B Akremi  M N Islam 《American journal of veterinary research》1986,47(1):188-191

Fourteen instances of meningocele-encephalocele in an experimental herd were recorded over a 5-year period. Thirteen of these affected animals were subjected to extensive pedigree analyses. Familial associations were strong, and clearly the meningocele-encephalocele in this herd was under genetic influence. However, additional studies are needed to clarify the mode of inheritance and, perhaps, to identify other factors that might be involved.  相似文献   

Pränatale und galaktogene Infektionen mit Toxocara canis WERNER 1782 (Anisakidae) bei der Maus     

Juliane Baumm  M. Stoye 《Zoonoses and public health》1981,28(4):319-328

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Mandibular corrective osteotomy using novel locking compression plate 3.5/4.5/5.0 mm metaphyseal plates     

Christoph S. Klaus DVM  Carsten Vogt DVM  CeqD  Prof. Christoph J. Lischer DVM  Diplomate ECVS 《Veterinary surgery : VS》2013,42(8):984-988

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Invasion biology of spotted wing Drosophila (Drosophila suzukii): a global perspective and future priorities     

Mark K. Asplen  Gianfranco Anfora  Antonio Biondi  Deuk-Soo Choi  Dong Chu  Kent M. Daane  Patricia Gibert  Andrew P. Gutierrez  Kim A. Hoelmer  William D. Hutchison  Rufus Isaacs  Zhi-Lin Jiang  Zsolt Kárpáti  Masahito T. Kimura  Marta Pascual  Christopher R. Philips  Christophe Plantamp  Luigi Ponti  Gábor Vétek  Heidrun Vogt  Vaughn M. Walton  Yi Yu  Lucia Zappalà  Nicolas Desneux 《Journal of pest science》2015,88(3):469-494

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Severe Systemic Envenomation Following Vipera berus Bite Managed with ViperaTAb Antivenom     

Jessica Hamilton  Juliane Kause  Thomas Lamb 《The Forestry Chronicle》2019,30(1):56-58

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Bottom-up down from the top: Honeydew as a carbon source for soil organisms     

Jana Seeger  Juliane Filser   《European Journal of Soil Biology》2008,44(5-6):483

Honeydew produced by aphids is a well-studied food source for mutualistic ants. Although considerable amounts drop onto the soil surface there are hardly any studies dealing with the potential effects of this additional C source for soil organisms, particularly those living at the soil surface. We studied this question by simulating honeydew and investigating plots under Populus canescens formerly infested with aphids on two ruderal sites differing in soil organic matter content and vegetation cover. The simulated honeydew input increased microbial biomass with some delay in week 10. Both natural and simulated honeydew raised the activity densities of an epigeic Collembola taxon, the Bourletiellidae, but not of the dominant Hemisotoma thermophila. The honeydew effect varied over time and with the site, and was more pronounced at the nutrient-poor site for Collembola, but not for microbial biomass. Ant consumption reduced the amount of honeydew reaching the soil surface by 50%. The activity density of H. thermophila was negatively related to ants and spiders, hinting at a top-down control. Honeydew clearly acts as a bottom-up force for soil organisms, which is however only part of the complex network connecting the food webs of primary producers and decomposers.  相似文献   

Comparison of computer assisted surgery with conventional technique for treatment of abaxial distal phalanx fractures in horses: an in vitro study     

Rossol M  Gygax D  Andritzky-Waas J  Zheng G  Lischer CJ  Zhang X  Auer JA 《Veterinary surgery : VS》2008,37(1):32-42

Objective— To (1) evaluate and compare computer-assisted surgery (CAS) with conventional screw insertion (conventional osteosynthesis [COS]) for treatment of equine abaxial distal phalanx fractures; (2) compare planned screw position with actual postoperative position; and (3) determine preferred screw insertion direction.
Study design— Experimental study.
Sample population— Cadaveric equine limbs (n=32).
Methods— In 8 specimens each, a 4.5 mm cortex bone screw was inserted in lag fashion in dorsopalmar (plantar) direction using CAS or COS. In 2 other groups of 8, the screws were inserted in opposite direction. Precision of CAS was determined by comparison of planned and actual screw position. Preferred screw direction was also assessed for CAS and COS.
Results— In 4 of 6 direct comparisons, screw positioning was significantly better with CAS. Results of precision analysis for screw position were similar to studies published in human medicine. None of evaluated criteria identified a preferred direction for screw insertion.
Conclusion— For abaxial fractures of the distal phalanx, superior precision in screw position is achieved with CAS technique compared with COS technique.
Clinical Relevance— Abaxial fractures of the distal phalanx lend themselves to computer-assisted implantation of 1 screw in a dorsopalmar (plantar) direction. Because of the complex anatomic relationships, and our results, we discourage use of COS technique for repair of this fracture type.  相似文献   

A global evaluation of forest interior area dynamics using tree cover data from 2000 to 2012     

Kurt Riitters  James Wickham  Jennifer K. Costanza  Peter Vogt 《Landscape Ecology》2016,31(1):137-148

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Studies of Soils, Soil Water and Stream Water at a Small Catchment near Guiyang, China     

Thorjørn Larssen  Xiong Jiling  Rolf D. Vogt  Hans Martin Seip  Liao Bohan  Zhao Dianwu 《Water, air, and soil pollution》1998,101(1-4):137-162

Acid deposition is considered to be a major environmental problem in China, but information about effects on soils and waters is scarce. To contribute to increased knowledge about the problem a small catchment (about 7 ha) in the outskirts of Guiyang, the provincial capital of Guizhou in south-western China, was instrumented for collection of precipitation, throughfall, soil water and stream water. In addition soil samples have been collected and analyzed for key properties. Median pH in the precipitation is 4.40 (quartiles: 4.19 and 4.77) and the median sulfate concentration 228 µeq/L (quartiles: 147 and 334 µeq/L). The dry deposition of both SO₂ and alkaline dust is considerable. The sum of wet deposition of sulfate and dry deposition of SO₂ has been estimated to about 8.5 gSm^-2yr^-1. The total S-deposition may be somewhat higher due to dry deposition of sulfate and occult deposition. In soil water, SO₄ ^2- is the major anion, generally ranging from 300 to 2500 µeq/L in the different plots. Calcium is an important cation, but there is also a considerable contribution of aluminum from the soil. In some of the plots the concentrations of inorganic monomeric aluminum (Ali) are typically between 200 and 400 µm. Potential harmful levels of aluminum and/or high Ali/(Ca²⁺ + Mg²⁺) molar ratios occur in the catchment, but damages to vegetation have not yet been reported. In most cases exchangeable aluminum accounts for between 75 and 95% of the total effective cation exchange capacity (CEC_E) in the mineral soils. The aluminum chemistry cannot easily be explained by conventional models as the Gaines-Thomas ion-exchange equation or equilibrium with an Al(OH)₃ mineral phase. The stream water is generally less acidic and has considerably lower concentrations of aluminum than the soil water, even though quite acid events have been observed (pH < 4.4). The median pH values are 4.9 and 5.0 in the two first order streams and 6.3 in the dam at the lower boarder of the catchment.  相似文献   

Indicative properties of fly‐ash affected forest soils in Northeastern Germany     

Susanne Klose  Juliane Koch  Ernst Bucker  Franz Makeschin 《植物养料与土壤学杂志》2001,164(5):561-568

Many forest ecosystems in Germany are strongly influenced by emissions of pollutants like SO₂ and alkaline dusts. To quantify and evaluate the consequences of long‐term fly ash deposition on forest soils, a study was conducted in pine stands (Pinus sylvestris) in the Dübener Heide in Northeastern Germany. This forest area has been influenced mainly by emissions from coal‐fired power plants and the chemical industry of the industrial region Bitterfeld‐Wolfen‐Zschornewitz since the early 1900. The study sites are located along a fly ash deposition gradient of 8, 16, 14, 18, and 25 km away from the main emission source in Bitterfeld (sites 1, 2, 3, 4, and 5, respectively). Samples of the organic horizons (Oi, Oe, and Oa) and mineral topsoil (0—10 cm) were taken in fall 1998 and analyzed for their ferromagnetic susceptibility and total ash content. Scanning electron microscopy (SEM) and energy dispersive X‐ray microanalysis (EDX) were performed on selected samples to differentiate between the pedogenic and atmospheric origin of the mineral components in the organic horizons. As a result of the long‐term deposition, ferromagnetic fly ash components are mainly accumulated in the Oe and Oa horizons of the forest soils studied. Ferromagnetic susceptibility was significantly higher (p ≤ 0.05) in the Oe horizon of sites 1 and 2 compared to sites 3, 4, and 5. Unusually high total ash contents for organic horizons of > 74 % were determined in the Oa at all sites. SEM revealed 3 distinct features of persistent fly ash deposits from coal‐fired power plants within the organic horizons that can be defined as ”︁stable glasses” with magnetic properties, aluminum‐silicate‐minerals, and slag fragments. SEM and EDX indicated that a great portion of the mineral particles found in the organic horizons of forests soils influenced by fly ash are from atmospheric sources. For detection of atmospheric lignite‐derived deposition into forest soils, the Oe and Oa horizons have to be considered as specific diagnostic horizons because they show indicative properties for such soils.  相似文献