A novel non‐azole topical treatment reduces Malassezia numbers and associated dermatitis: a short term prospective,randomized, blinded and placebo‐controlled trial in naturally infected dogs          下载免费PDF全文

Ylva Sjöström  Paul Mellor  Kerstin Bergvall 《Veterinary dermatology》2018,29(1):14-e7

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Prediction of basic wood properties for Norway spruce. Interpretation of Near Infrared Spectroscopy data using partial least squares regression     

Jón B. Hauksson  Göran Bergqvist  Urban Bergsten  Michael Sjöström  Ulf Edlund 《Wood Science and Technology》2001,35(6):475-485

This work was undertaken to investigate the feasibility of using near infrared spectroscopy (NIR) and partial least squares regression (PLS) as a tool to characterize the basic wood properties of Norway Spruce (Picea abies (L.) Karst.). The wood samples originated from a trial located in the province of Västerbotten in Sweden. In this trial, the effects of birch shelterwoods (Betula pendula Roth) of different densities on growth and yield in Norway spruce understorey were examined. All Norway spruce trees in each shelterwood treatment were divided into three growth rate classes based on diameter at breast height (1.3?m) over bark. Five discs were cut from each tree (i.e. from the root stem, and at 20%, 40%, 60%, and 80% of the total height). The discs from 40% tree height were used (i.e., where the largest variations in annual ring widths and wood density were found). A total of 27 discs were selected. The discs were used for measuring annual ring widths, wood density, average fiber length and the fiber length distributions. Milled wood samples prepared from the discs were used for recording NIR spectra. PLS regression was used to generate prediction models for the wood properties (Y-matrix) and NIR spectra (X-matrix) as well as between the wood properties (Y-matrix) and the fiber length distributions (X-matrix). One set of models was generated using untreated spectra and fiber length distributions. For a second set of models the structure in the X-matrix, which was orthogonal to the matrix described by the wood properties, was eliminated using a soft target rotation technique called orthogonal signal correction (OSC). The PLS model obtained using “raw” untreated NIR spectra and fiber length distributions had a poor modeling power as evidenced by the cumulative Q² values. For the PLS models based on untreated NIR spectra the cumulative Q² values ranged from a minimum of 16% (wood density) to a maximum of 46% (no. of annual rings). Orthogonal signal correction of the X-matrix (NIR spectra or fiber length distributions) gave PLS models with a modeling power corresponding to cumulative Q² values well in excess of 70%. The improvement in predictive ability accomplished by the OSC procedure was verified by placing four of the 27 observations in an external test set and comparing RMSEP values for the test set observations without OSC and with OSC.  相似文献   

Evaluation of temperature sum models and timing of Quassia amara (Simaroubaceae) wood-chip extract to control apple sawfly (Hoplocampa testudinea Klug) in Sweden     

P. Sjöberg  W. Swiergiel  D. Neupane  E. Lennartsson  T. Thierfelder  M. Tasin  B. Rämert 《Journal of pest science》2015,88(2):301-310

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Residential runoff – The role of spatial density and surface cover,with a case study in the Höjeå river catchment,southern Sweden     

Johanna Deak Sjöman  Susannah E. Gill 《Urban Forestry & Urban Greening》2014,13(2):304-314

Depending on the spatial density of built cover and location within a catchment, residential areas make varying contributions to surface runoff throughout different rainfall events. This study examined these contributions and the associated effect of different surface covers and sustainable drainage systems on runoff generation. The Soil Conservation Service curve number (SCS-CN) method was applied to analyse urban development in the Höjeå river catchment in southern Sweden.The results indicated that identical amounts of surface runoff are generated by low-density residential areas on heavy clay soils and high-density residential areas on sandy soils. However, increasing the density of built-up areas on sandy soils is likely to be more disruptive to the hydrological balance and to generate a greatly increasing difference in runoff as building density and impermeable surface area increase. A similar pattern is likely to occur if rainfall intensity increases. It may therefore be appropriate to apply different planning considerations to residential developments depending on the existing soil group, e.g. conserving existing vegetated surfaces on sandy soil and incorporating permeable paving materials and sub-surface infiltration beds in development on clayey soils. Increased area of impermeable surface cover will increase surface runoff in all residential areas, irrespective of building density, soil group and rainfall intensity. However, adapting a systems approach in combining vegetative structures and permeable paving materials with subsurface infiltration beds can help mitigate the impact of surface runoff, particularly in urban developments on clay-rich soils.  相似文献   

Total folate content and retention in rosehips (Rosa ssp.) after drying     

Strålsjö L  Alklint C  Olsson ME  Sjöholm I 《Journal of agricultural and food chemistry》2003,51(15):4291-4295

Folate concentrations in rosehips and commercial rosehip products and factors affecting folate retention during drying were investigated. On the basis of the raw material studied during 3 years, rosehips were shown to be a rich folate source, 400-600 microg/100 g based on dry matter and 160-185 microg/100 g based on the fresh weight (edible part). Rosehips are not often consumed fresh; therefore, drying to produce stable semimanufactures is a crucial step. The degradation of folate was shown to be dependent on the drying time until the water activity was below 0.75. The required drying time was reduced by cutting the rosehips in slices and to some extent also by increasing the temperature. Retention of folate and ascorbic acid was affected by the same factors, and high content of ascorbic acid could provide a possible protection for folate degradation.  相似文献   

MED12, the mediator complex subunit 12 gene, is mutated at high frequency in uterine leiomyomas     

Mäkinen N  Mehine M  Tolvanen J  Kaasinen E  Li Y  Lehtonen HJ  Gentile M  Yan J  Enge M  Taipale M  Aavikko M  Katainen R  Virolainen E  Böhling T  Koski TA  Launonen V  Sjöberg J  Taipale J  Vahteristo P  Aaltonen LA 《Science (New York, N.Y.)》2011,334(6053):252-255

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A glycyl radical site in the crystal structure of a class III ribonucleotide reductase     

Logan DT  Andersson J  Sjöberg BM  Nordlund P 《Science (New York, N.Y.)》1999,283(5407):1499-1504

Ribonucleotide reductases catalyze the reduction of ribonucleotides to deoxyribonucleotides. Three classes have been identified, all using free-radical chemistry but based on different cofactors. Classes I and II have been shown to be evolutionarily related, whereas the origin of anaerobic class III has remained elusive. The structure of a class III enzyme suggests a common origin for the three classes but shows differences in the active site that can be understood on the basis of the radical-initiation system and source of reductive electrons, as well as a unique protein glycyl radical site. A possible evolutionary relationship between early deoxyribonucleotide metabolism and primary anaerobic metabolism is suggested.  相似文献   

Anthocyanin characterization utilizing liquid chromatography combined with advanced mass spectrometric detection     

Steimer S  Sjöberg PJ 《Journal of agricultural and food chemistry》2011,59(7):2988-2996

Anthocyanins are naturally occurring polyphenolic plant pigments. To analyze the anthocyanin content of samples, rapid and reliable methods for separation and detection are needed. In this work an LC-DAD-ESI-MS/MS instrument was used to develop a new tandem MS data acquisition strategy for anthocyanin characterization which was subsequently compared to more conventional measurements. It has been shown that the newly developed strategy, multiple reaction monitoring-initiated anthocyanin characterization (MIAC), can successfully be used in anthocyanin analysis and has various advantages compared to some more traditional measurements, such as enhanced selectivity, better signal-to-noise ratio and simplified data evaluation. Furthermore, the number of relevant MS/MS data increased significantly with the MIAC method compared with a more common information dependent MS experiment strategy.  相似文献   

Physical activity monitoring in Europe. The European Physical Activity Surveillance System (EUPASS) approach and indicator testing     

Rütten A  Vuillemin A  Ooijendijk WT  Schena F  Sjöström M  Stahl T  Vanden Auweele Y  Welshman J  Ziemainz H 《Public health nutrition》2003,6(4):377-384

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Antioxidants, low molecular weight carbohydrates, and total antioxidant capacity in strawberries (Fragaria x ananassa): effects of cultivar, ripening, and storage   总被引：1，自引：0，他引：1  

Olsson ME  Ekvall J  Gustavsson KE  Nilsson J  Pillai D  Sjöholm I  Svensson U  Akesson B  Nyman MG 《Journal of agricultural and food chemistry》2004,52(9):2490-2498

Four cultivars of strawberries (Senga Sengana, BFr77111, Elsanta, and Honeoye) were studied for their content of antioxidants, total antioxidant capacity, and low molecular weight carbohydrates in relation to harvest year, ripening stage, and cold storage. For ascorbic acid, chlorogenic acid, ellagic acid, and total antioxidative capacity, measured in both water-soluble and water-insoluble extracts, there was a 2-5-fold variation among cultivars. Unripe berries contained lower concentrations of chlorogenic acid and p-coumaric acid and also quercetin and kaempferol compared with riper berries. During cold storage for up to 3 days, relatively few changes in the concentration of the different antioxidants occurred. The concentrations of several investigated parameters were interrelated, for example, for ascorbic acid and water-soluble antioxidant capacity and for ellagic acid and water-insoluble antioxidant capacity. The dominating sugars in strawberries were fructose and glucose, but considerable amounts of sucrose were also present, and their contents varied among cultivars, giving a predicted glycemic index of approximately 81. Verbascose, raffinose, and stachyose were found in only minor amounts. The study shows that the concentration of a number of bioactive compounds in strawberries varied according to cultivar, ripening stage, and storage. This information should make it possible to select strawberries with an optimal content of bioactive compounds.  相似文献