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排序方式： 共有131条查询结果，搜索用时 73 毫秒
51.
L. Alvarez R. Saucedo Antonia Aranega Consolación Melguizo y Celia Velez Amelia E. Aránega 《Anatomia, histologia, embryologia》1993,22(4):319-323
The right ventricle was studied in 75 anatomically normal swine hearts. Nine parameters in the papillo-tendino valvular system and three corresponding to the tricuspid orifice, pulmonary orifice and length of the inflow tract were measured. Correlations were established between the parameters and heart weight in grams, between the different parameters themselves, and between heart weight and body weight. The results were compared with similar data from human hearts, and were considered of use to researchers planning to use the swine heart as an experimental model to study congenital or induced heart diseases, or as a reference for the clinical interpretation of spontaneous cardiac, anomalies in swine. 相似文献
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Amelia A.M. Grant Daniel Baker Dave A. Higgs Colin J. Brauner Jeffrey G. Richards Shannon K. Balfry Patricia M. Schulte 《Aquaculture (Amsterdam, Netherlands)》2008,277(3-4):303-312
This study assessed refined canola oil (CO) as a supplemental dietary lipid source for juvenile fall chinook salmon, Oncorhynchus tshawytscha, parr with respect to possible effects on their growth and osmoregulatory performance and body composition. Diets with equal protein ( 57%) and lipid ( 19%) content (dry weight basis) were supplemented with lipid from either anchovy oil (AO) or CO with AO so that CO comprised 0 (0CO), 11% (11CO), 22% (22CO), 33% (33CO), 43% (43CO) or 54% (54CO) of the dietary lipid content. Triplicate groups of juvenile chinook salmon were fed their prescribed diets for 104 days in freshwater (FW) and 31 days in seawater (SW) after a 4-day transition period. Dietary fatty acid compositions reflected the different proportions of AO and CO in the supplemental lipid. Diet treatment had no effect on fish growth, feed intake, feed efficiency, protein utilization, fish mortality or terminal whole body water and ash percentages. Whole body lipid percentages were higher in 11CO and 43CO fish than in 33CO fish and in 11CO fish versus 22CO fish. Whole body protein percentages were highest in 33CO, 43CO and 54CO fish and lowest in 0CO and 22CO fish. Terminal whole body fatty acid compositions were influenced strongly by the dietary fatty acid compositions. Haematocrit and muscle water percentages were not affected consistently and plasma Na+ and Cl− concentrations were unaffected by diet treatment in FW or 24-h seawater challenges during FW residency. Also, diet treatment had no effect on the physiological parameters after SW residency. We conclude that dietary treatment had no effect on fish growth performance under our experimental conditions. Also, the dietary inclusion of CO neither facilitated nor impaired the transfer of chinook salmon parr to seawater. Thus, CO was found to be an excellent and cost-effective source of supplemental dietary lipid for culture of juvenile fall chinook salmon during freshwater residency. 相似文献
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Amelia S. Munsterman DVM MS DACVS R. Reid Hanson DVM DACVS DACVECC 《Journal of Veterinary Emergency and Critical Care》2009,19(6):545-553
Objectives – To develop a direct method for measuring intra‐abdominal pressures in the standing horse, identify a reference interval for direct intra‐abdominal pressures, compare these pressures to indirect intra‐abdominal pressures measured from the bladder, and determine the optimal bladder infusion volume for indirect pressure measurement. Design – Prospective, experimental study. Setting – A university‐based equine research facility. Animals – Ten healthy adult horses, 5 males and 5 females. Interventions – Direct intra‐abdominal pressures were measured through an intraperitoneal cannula and zeroed at the height midway between the height of the tuber ishii and point of the shoulder. Indirect measurements of intra‐abdominal pressure were performed by measuring intravesicular pressures through a transurethral catheter zeroed at the tuber ishii. Measurements and Main Results – Direct pressure measurements obtained in the standing horse were subatmospheric (mean, ?1.80 cm H2O; SD, 1.61 cm H2O; 95% CI, ?2.80 to ?0.80) and were shown to decrease as the horse's weight increased (Pearson's r=?0.67, P=0.04), with no effect of head position (P=0.15). Mean baseline indirect pressure measurements (mean, ?8.63 cm H2O; SD, 4.37 cm H2O; 95% CI, ?13.05 to ?4.21) were significantly different from the pressures measured directly from the abdomen (P<0.001). Indirect pressure measurements were noted to increase with increasing volumes infused into the bladder, and were statistically different at a volume of 100 mL (P=0.004). There was low to moderate correlation between direct and indirect pressure measurements of intra‐abdominal pressure over a range of fluid volumes infused into the bladder (Pearson's correlation range ?0.38 to 0.58). Conclusion – Pressures measured directly in the standing horse were subatmospheric, and increased as the horse's weight increased. Indirect pressures measured were altered by increasing volumes infused in the bladder. There was no significant correlation between the 2 methods of intra‐abdominal pressure measurement. 相似文献
55.
Alfonso Calera Belmonte Anne M. Jochum AndrÉs Cuesta GarcÍa Amelia Montoro Rodríguez Prudencio López Fuster 《Irrigation and Drainage Systems》2005,19(3-4):337-353
Irrigation Advisory Services (IAS) are the natural management instruments to achieve a better efficiency in the use of water
for irrigation. IAS provide the farmers with irrigation scheduling information, based on crop water requirements for different
crops, and thus, help farmers to optimise production and cost-effectiveness. Current IAS rely on labour- and cost-intensive
field work, yet are unable to cover each plot in large areas at regular short time intervals. Earth observation (EO) is naturally
destined to fill this gap. It allows for efficiently monitoring crop water requirements and related parameters within each
field in extended areas. The incorporation of IT in the generation and distribution of information makes that information
easily available to IAS and to its associated farmers in a personalised way. Farmers can opt to receive a wide variety of
products, tailored to their needs and infrastructure, ranging from simple irrigation scheduling recommendation (irrigation
volume, time) to colour-coded images (providing quick intuitive information on the crop vigour within their plots), both on
PC and/or mobile phones.
This work is based on the project DEMETER (DEMonstration of Earth observation TEchnologies in Routine irrigation advisory
services), which assesses and demonstrates the EO- and IT-induced improvements in IAS day-to-day operations. This paper describes
the methodology and discusses examples of products. 相似文献
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Paul H. Walz Manuel F. Chamorro Shollie M. Falkenberg Thomas Passler Frank van der Meer Amelia R. Woolums 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(5):1690-1706
Control of bovine viral diarrhea virus (BVDV) in cattle populations across most of the world has remained elusive in spite of advances in knowledge about this viral pathogen. A central feature of virus perseverance in cattle herds is the unique mechanism of persistent infection. Managing BVDV infection in herds involves controlling persistently infected carrier animals using a multidimensional approach of vaccination, biosecurity, and identification of BVDV reservoirs. A decade has passed since the original American College of Veterinary Internal Medicine consensus statement on BVDV. While much has remained the same with respect to clinical signs of disease, pathogenesis of infection including persistent infection, and diagnosis, scientific articles published since 2010 have led to a greater understanding of difficulties associated with control of BVDV. This consensus statement update on BVDV presents greater focus on topics currently relevant to the biology and control of this viral pathogen of cattle, including changes in virus subpopulations, infection in heterologous hosts, immunosuppression, and vaccination. 相似文献
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