A practitioner's guide to understanding infectious disease diagnostics in the United Kingdom. Part 2: Serological diagnostic testing methods and diagnostic test result interpretation     

F. M. Whitlock  J. R. Newton 《Equine Veterinary Education》2022,34(7):381-388

This article is the second in a review series about infectious disease diagnostics and summarises serological testing techniques, diagnostic test validation and result interpretation. It highlights the requirement for results to be interpreted with testing limitations in mind and in conjunction with the case's clinical presentation. With these foundations, the treating clinician should always be well placed to deal with equine infectious diseases.  相似文献   

Restoration of forest resilience: An achievable goal?     

Adrian C. Newton  Elena Cantarello 《New Forests》2015,46(5-6):645-668

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Liming effects on some chemical and biological parameters of soil (spodosols and histosols) in a hardwood forest watershed     

Joseph B. Yavitt  Robert M. Newton 《Water, air, and soil pollution》1990,54(4):529-544

Acidic lakes and streams can be restored with base application (usually limestone) provided that the base does not wash out before the benefits of alkalization can be realized; liming soils of the adjoining watershed may be an alternative approach. This study was conducted to provide a scientific basis for soil liming. Plots (50 m²) with different limestone dosages (e.g. 0, 5, 10 or 15 Mg CaCO₃ ha^?1) were established on each of two different soils (a Spodosol and a Histosol) in the Woods Lake watershed of the Adirondack Park Region of New York, USA. Six months after soil liming much of the added limestone was still present in both the Spodosol and in the Histosol. Ten months after soil liming results indicated that: (1) soil pH increased (>1 unit) but mostly in the top 1 cm; (2) net N mineralization increased from 9.6 to ca. 15 µg N g^?1 d^?1 and nitrification increased from 2.8 to ca. 8 µg N g^?1 d^?1; (3) denitrification was not affected (98 µg N g^?1 d^?1); (4) CO₂ production potential decreased in the surface soil and as a function of limestone dosage (60 to 6 µmol g^?1 d^?1); and (5) soluble SO ₄ ^2? concentrations in the Histosol were not affected (105 µmol L^?1). Liming acidic forest soils with >5 Mg CaCO₃ ha^?1 may increase the soil's acid neutralizing capacity, which could provide long-term benefits for surface water acidification.  相似文献   

Stable isotope dilution techniques for assessing vitamin A status and bioefficacy of provitamin A carotenoids in humans     

Furr HC  Green MH  Haskell M  Mokhtar N  Nestel P  Newton S  Ribaya-Mercado JD  Tang G  Tanumihardjo S  Wasantwisut E 《Public health nutrition》2005,8(6):596-607

Vitamin A deficiency is a major global public health problem. Among the variety of techniques that are available for assessing human vitamin A status, evaluating the provitamin A nutritional values of foodstuffs and estimating human vitamin A requirements, isotope dilution provides the most accurate estimates. Although the relative expense of isotope dilution restricts its applications, it has an important function as the standard of reference for other techniques. Mathematical modelling plays an indispensable role in the interpretation of isotope dilution data. This review summarises recent applications of stable isotope methodology to determine human vitamin A status, estimate human vitamin A requirements, and calculate the bioconversion and bioefficacy of food carotenoids.  相似文献   

Influence of geology on lake acidification in the ILWAS Watersheds     

Richard April  Robert Newton 《Water, air, and soil pollution》1985,26(4):373-386

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A TROUBLE-FREE TEST FOR THE PRESENCE OF EELWORMS ON CHRYSANTHEMUM     

D. M. Cranston  P. Newton 《Plant pathology》1965,14(2):74-74

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Dog attacks on children: report from two major city hospitals     

AL PODBERSCEK  JK BLACKSHAW 《Australian veterinary journal》1991,68(7):248-249

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Inhibition of protein synthesis in loblolly pine hypocotyls by mannitol-induced water stress     

Hulbert C  Funkhouser EA  Soltes EJ  Newton RJ 《Tree physiology》1988,4(1):19-26

The relationship between mannitol-induced water stress and protein synthesis was investigated in hypocotyl slices of loblolly pine (Pinus taeda L.). Mannitol-induced water stress inhibited the incorporation of L-[(35)S]methionine into protein. As the water potential decreased, incorporation of label into protein decreased in both the soluble- and membrane-protein fractions. There were no significant differences in response to water stress among seed sources from four different geographical regions.  相似文献   

Statistics for the Veterinarian     

Helen Newton  Turner 《Australian veterinary journal》1936,12(3):90-100

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Yolk and serum cholesterol and production traits,as affected by incorporatinga supraoptimal amount of copper in the diet of the leghorn hen     

A. AL ANKARI  H. NAJIB  A. AL HOZAB 《British poultry science》1998,39(3):393-397

1. An experiment was conducted to investigate the possibility of lowering the yolk cholesterol of the egg by supplementing the diet with supraoptimal amounts of copper (50, 150 or 250 mg/kg) as sulphate or acetate. 2. A significant reduction in egg production and a negative effect on food conversion was found when 250 mg/kg of copper was added compared to the control (no added copper). Acetate seemed significantly less harmful in both cases. 3. A significant linear reduction was found in plasma and yolk cholesterol (20% and 14%) and in plasma and yolk triglycerides (24% and 30%) as the dietary copper content was increased from 0 to 250 mg/kg. 4. Regardless of type or quantity of copper, cholesterol and lipids were decreased linearly as birds remained longer on the treatments. A significant interaction between quantity and period showed a greater reduction at a later time. 5. If slightly lower egg production can be accepted, the addition of 250 mg/kg copper might be beneficial in reducing the cholesterol content of the yolk.  相似文献