Victor Wallace Smith          下载免费PDF全文

RB Richards 《Australian veterinary journal》2015,93(5):173-173

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Magnetic resonance imaging and computed tomography findings of Dyke‐Davidoff‐Masson‐like syndrome in a cat          下载免费PDF全文

RB Song  EN Glass  M Kent  FA Castro  A de Lahunta 《Australian veterinary journal》2015,93(10):377-380

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The spatial distribution of excreta under intensive cattle grazing   总被引：2，自引：0，他引：2  

I. R. RICHARDS  KAREN M. WOLTON 《Grass and Forage Science》1976,31(2):89-92

The spatial distribution of excreta from intensive cattle grazing was recorded and was described by a negative binomial function. This enabled the proportion of a pasture surface affected by excreta to be calculated for various grazing periods. Where the effect of excreta on the sward was short-lived, as for urine N, or where the total area covered by excreta remained small, as for dung, then little overlapping of effective excreta patches could be expected. Appreciable overlapping of effective patches could, however, occur for the long-lived urine K effect and this should be taken into account when estimating the proportion of a pasture surface affected.  相似文献   

Measurement of cardiac output by transesophageal Doppler ultrasonography in anesthetized dogs: comparison with thermodilution     

T Lazic  DH Riedesel  RB Evans 《Veterinary anaesthesia and analgesia》2003,30(2):104-105

Thermodilution (TD) is the standard method for cardiac output (CO) monitoring in human medicine. Although called the ‘gold standard’, TD is related to numerous complications and data misinterpretations. Recently, a noninvasive, continuous, ultrasound‐based technique for CO measurement has been developed (Hemosonic 100, Arrow Intl). This study compared transesophageal Doppler ultrasonography (TED) for measuring CO with TD in anesthetized dogs. In this study, ten dogs were used to simultaneously measure CO by TED and TD. All dogs were pre‐medicated with acepromazine at 0.1 mg kg^?1 IM, induced with thiopental at 10 mg kg^?1 IV, and maintained on isoflurane at end‐tidal concentrations of 1.3%. Baseline and four different levels of CO were used for comparison. Low CO levels were induced by caudal vena cava occlusion. High CO levels were induced by the constant IV infusion of dopamine, dobutamine, or norepinephrine. Each level of CO allowed one comparison between TED and TD. Forty‐nine paired comparisons of CO were determined ranging from 0.73 to 10.9 L minute^?1. Simple linear regression was used to determine the correlation between the two techniques. Correlation coefficient (r²) was 0.53. Bland and Altman statistical method was used for assessing agreement between the two methods. The difference between the TD and TED when all data were included was 0.82 (bias) ± 1.63 L minute^?1 (mean ± SD). At low CO levels (baseline and caudal vena cava occlusion), the correlation coefficient was 0.77, bias was 0.35 ± 0.64 L minute^?1. At high CO levels (dopamine, dobutamine, or norepinephrine), the correlation coefficient was 0.39. It was concluded that TED was not a reliable monitoring method in determining CO when positive inotropes were used. TED might have importance in situations of low CO values; however, further investigation is warranted.  相似文献   

Computed tomographic anatomy of the nasal cavity,paranasal sinuses and tympanic cavity of the koala     

S Hemsley  H Palmer  RB Canfield  MEB Stewart  MB Krockenberger  R Malik 《Australian veterinary journal》2013,91(9):353-365

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Selection and characterization of the inheritance of resistance of Spodoptera frugiperda (Lepidoptera: Noctuidae) to chlorantraniliprole and cross‐resistance to other diamide insecticides     

Anderson Bolzan  Fernando EO Padovez  Antonio RB Nascimento  Ingrid S Kaiser  Ewerton C Lira  Fernando SA Amaral  Rubens H Kanno  Jos B Malaquias  Celso Omoto 《Pest management science》2019,75(10):2682-2689

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Phytoplankton community structure and the drawdown of nutrients and CO2 in the southern ocean     

KR Arrigo  DH Robinson  DL Worthen  RB Dunbar  GR DiTullio  M VanWoert  MP Lizotte 《Science (New York, N.Y.)》1999,283(5400):365-367

Data from recent oceanographic cruises show that phytoplankton community structure in the Ross Sea is related to mixed layer depth. Diatoms dominate in highly stratified waters, whereas Phaeocystis antarctica assemblages dominate where waters are more deeply mixed. The drawdown of both carbon dioxide (CO2) and nitrate per mole of phosphate and the rate of new production by diatoms are much lower than that measured for P. antarctica. Consequently, the capacity of the biological community to draw down atmospheric CO2 and transport it to the deep ocean could diminish dramatically if predicted increases in upper ocean stratification due to climate warming should occur.  相似文献   

Echocardiographic values in the Greyhound   总被引：1，自引：0，他引：1  

A PAGE  G EDMUNDS  RB ATWELL 《Australian veterinary journal》1993,70(10):361-364

SUMMARY Serial B- and M-mode echocardiography was performed on Greyhounds to determine normal cardiac values for this breed. These were generally of greater magnitude than predicted from previous echocardiographic research on other breeds and crossbreeds. In particular, left ventricular posterior wall thickness, measured at both systole and diastole, was consistently greater.  相似文献   

Acute paraplegia in a Thoroughbred racehorse after general anaesthesia     

SR RAIDAL  SL RAIDAL  RB RICHARDS  AV COSGRIFF  KJ ROSE 《Australian veterinary journal》1997,75(3):178-179

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Cardiac changes in experimental hyperthyroidism in dogs     

A HOEY  A PAGE†  L BROWN  RB ATWELL† 《Australian veterinary journal》1991,68(11):352-355

Injection of triiodothyronine (T3) (1 mg/kg per day subcutaneously for 14 days) to 10 healthy dogs produced a hyperthyroid state characterised by high serum T3 concentrations, hypokalaemia, hyperactivity, loss of weight, diarrhoea and thirst. Electrocardiographic measurements showed that these dogs had an increase in heart rate of 63 +/- 11 beats/min with a significantly increased T wave amplitude without changes in R wave amplitude. Echocardiographic measurements showed no changes in fractional shortening and no evidence of ventricular hypertrophy, in contrast to reports in humans, cats and rats. However, the smooth muscle of the coronary arteries was markedly hypertrophied, which may cause a decrease in myocardial perfusion.  相似文献