Causes of perinatal deaths in foals in New Zealand in the 2007 and 2008 seasons     

AG Wolfe  AC Johnstone  IG Mayhew 《New Zealand veterinary journal》2013,61(1)

  相似文献   

Sublethal doses of fipronil intensify synapsin immunostaining in Atta sexdens rubropilosa (Hymenoptera: Formicidae) brains          下载免费PDF全文

Priscila Cintra‐Socolowski  Thaisa C Roat  Roberta CF Nocelli  Pablo H Nunes  Rafael AC Ferreira  Osmar Malaspina  Odair C Bueno 《Pest management science》2016,72(5):907-912

  相似文献   

Anadenanthera colubrina (Vell.) Brenan produces steroidal substances that are active against Alternaria alternata (Fr.) Keissler and that may bind to oxysterol‐binding proteins     

Viviane AC Campos  Fabiano J Perina  Eduardo Alves  Jaqueline Sartorelli  Amanda M Moura  Denilson F Oliveira 《Pest management science》2014,70(12):1815-1822

  相似文献   

The magnetic stability of spin-dependent tunneling devices     

S Gider  B Runge  AC Marley  SSP Parkin 《Science (New York, N.Y.)》1998,281(5378):797-799

The tunneling resistance between two ferromagnetic metal layers that are separated by a thin insulator depends on the relative orientation of the magnetization M of each layer. In a memory device, independent switching of the magnetically soft layer is achieved by making the other layer either exchange-biased or magnetically hard. The repeated reversal of M of the soft layer by field cycling can demagnetize the other magnetically hard layer and thus erase the tunnel junction's memory. The M of exchange-biased structures was stable at least to 10(7) cycles, whereas in hard structures, M generally decayed logarithmically with the number of field cycles. The decay was very sensitive to the thickness of the hard layer and the composition of the soft layer. However, no decay was observed when the moment reversal was accomplished by coherent rotation, establishing that demagnetization results from the formation and motion of domain walls in the soft layer during field cycling.  相似文献   

Distribution and protected area coverage of endemic taxa in West Africa’s Biafran forests and highlands     

Richard A. Bergl  John F. Oates  Roger Fotso 《Biological conservation》2007,134(2):195-208

The forests and highlands along the southern portion of the Nigeria-Cameroon border and on the island of Bioko have long been recognized as being biologically diverse. This region (referred to as the Biafran forests and highlands) is a center of endemism for a wide variety of taxa including, but not limited to, primates, anuran amphibians, birds, freshwater fish, butterflies, dragonflies, and trees. Though these groups have diverse distributions, conservation efforts have to date largely been focused on lowland areas. We conducted a GIS-based analysis of point locality records for three groups characterized by high endemism (primates, anuran amphibians, birds) in order to examine both their spatial and altitudinal distribution throughout the study area. We also evaluated the distribution of existing and potential protected areas relative to highland areas and the distribution of endemics. Our analysis suggests that the existing protected area system provides poor coverage of montane habitats and their associated endemic taxa. Complementarity analysis suggests that, if the protected area network were expanded to include a small number of highland sites, coverage of endemic taxa could be significantly improved. Many of these important highland sites are currently under intense pressure from habitat loss and hunting. If the full range of biodiversity present in the Biafran forests and highlands is to be preserved, new protected areas should be gazetted that take the varied distributions of the regions endemic taxa into account.  相似文献   

Hydrocephalus secondary to obstruction of the lateral apertures in two dogs          下载免费PDF全文

M Kent  EN Glass  AC Haley  LS Shaikh  M Sequel  U Blas‐Machado  TM Bishop  SP Holmes  SR Platt 《Australian veterinary journal》2016,94(11):415-422

  相似文献   

CASE REPORT AND CLINICAL REVIEW: Acute lameness associated with osseous metastasis of a peri-renal carcinoma in a horse     

AC Young  KL Hoffmann  AP Begg  DA Major 《Australian veterinary journal》2010,88(9):346-350

We present a case of aggressive metastatic carcinoma in a horse that was initially presented for shoulder lameness. Although radiography and scintigraphy were useful for localising a lesion in the proximal humerus, subsequent development of non-specific signs of systemic disease prompted further evaluation. Haematology and blood biochemistry, urinalysis and ultrasonography were all instrumental in identifying renal involvement. A diagnosis of a peri-renal mass causing secondary renal failure prompted euthanasia of the horse because of the poor prognosis. Antemortem findings were supported by necropsy, with secondary lesions also identified in the spleen, liver, 8th left rib and proximal humerus. Histological examination yielded a diagnosis of undifferentiated metastatic carcinoma.  相似文献   

Environmental conditions during root development: Drought constraint on cassava starch quality   总被引：1，自引：0，他引：1  

Klanarong Sriroth  Kuakoon Piyachomkwan  Vilai Santisopasri  Christopher G. Oates 《Euphytica》2001,120(1):95-102

Cassava has the reputation of being a drought tolerant crop, however, when deprived of water, plant and root development are affected. This ultimately will translate to an altered starch synthesis expressed by variation of starch quality. The magnitude of which, is influenced by the severity of stress conditions and stage of plant maturity. During early plant development,water stress retards growth, which will only be resumed after the immature plant has received sufficient water. Despite of an increased starch yield, the effect of initial water stress on starch quality is still sustained. In mature plants, starch quality is affected by environmental conditions prior to root harvest, especially the onset of rain after a stress period as indicated by a reduced starch paste. This paper presents the argument for extending the scope of traditional breeding programs beyond selecting for plant growth under drought conditions, to strategies that place greater emphasis on stabilizing starch quality. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Vitrification with Glutamine Improves Maturation Rate of Vitrified / Warmed Immature Bovine Oocytes     

C Yamada  WB Feitosa  R Simões  AC Nicacio  CM Mendes  MEOA Assumpção  JA Visintin 《Reproduction in domestic animals》2011,46(1):173-176

The current study examined the protective effects of l ‐glutamine and cytochalasin B during vitrification of immature bovine oocytes. Oocyte vitrification solution (PBS supplemented with 10% FCS, 25% EG, 25% DMSO and 0.5 m trehalose) was the vitrification control. Treatments were the addition of 7 μg/ml cytochalasin B, 80 mm glutamine or both cytochalasin and glutaminine for 30 s. After warming, oocytes were matured in vitro for 24 h, fixed and stained with Hoechst (33342) for nuclear maturation evaluation. l ‐glutamine improved the vitrified/warmed immature bovine oocytes viability (32.8%), increasing the nuclear maturation rates compared to other treatments and the no treatment vitrified control (17.4%). There was, however, no effect of cytochalasin B on in vitro maturation (14.4%).  相似文献   

Comment on "Protein sequences from mastodon and Tyrannosaurus rex revealed by mass spectrometry"     

Buckley M  Walker A  Ho SY  Yang Y  Smith C  Ashton P  Oates JT  Cappellini E  Koon H  Penkman K  Elsworth B  Ashford D  Solazzo C  Andrews P  Strahler J  Shapiro B  Ostrom P  Gandhi H  Miller W  Raney B  Zylber MI  Gilbert MT  Prigodich RV  Ryan M  Rijsdijk KF  Janoo A  Collins MJ 《Science (New York, N.Y.)》2008,319(5859):33; author reply 33

We used authentication tests developed for ancient DNA to evaluate claims by Asara et al. (Reports, 13 April 2007, p. 280) of collagen peptide sequences recovered from mastodon and Tyrannosaurus rex fossils. Although the mastodon samples pass these tests, absence of amino acid composition data, lack of evidence for peptide deamidation, and association of alpha1(I) collagen sequences with amphibians rather than birds suggest that T. rex does not.  相似文献