The potential of urban tree plantings to be cost effective in carbon credit markets     

Melissa R. McHale  E. Gregory McPherson  Ingrid C. Burke 《Urban Forestry & Urban Greening》2007,6(1):49-60

Emission trading is considered to be an economically sensitive method for reducing the concentrations of greenhouse gases, particularly carbon dioxide, in the atmosphere. There has been debate about the viability of using urban tree plantings in these markets. The main concern is whether or not urban planting projects can be cost effective options for investors. We compared the cost efficiency of four case studies located in Colorado, and used a model sensitivity analysis to determine what variables most influence cost effectiveness. We believe that some urban tree planting projects in specific locations may be cost effective investments. Our modeling results suggest that carbon assimilation rate, which is mainly a function of growing season length, has the largest influence on cost effectiveness, however resource managers can create more effective projects by minimizing costs, planting large-stature trees, and manipulating a host of other variables that affect energy usage.  相似文献   

Assessment of the human risk associated with use of pork with possible presence of Salmonella typhimurium DT104 for dry-cured sausages     

Alban L  Olsen AM  Nielsen B  Sørensen R  Jessen B 《Berliner und Münchener tier?rztliche Wochenschrift》2001,114(9-10):366-369

We examined whether pork with suspected content of Salmonella Typhimurium DT104 (DT104) could be used for production of dry-cured sausages without jeopardizing consumer safety. The results of the risk assessment showed, that if Salmonella is present in raw pork, it is usually in low numbers. Additionally, during processing, an eventual presence of Salmonella will be reduced with at least two log units. The simulations showed that only 1-2 DT104 would be present in dry-cured sausages made by Danish pork, and this extremely seldom. Likewise, up to 4 DT104 would be present in dry-cured sausages made by foreign pork. It is not clear whether these low numbers of DT104 are capable of producing disease at all. However, if higher numbers are present, disease might occur. Therefore, we set up a monitoring and managing program, including a list with demands to processing in order to achieve minimum two-log reduction of any DT104 bacteria. The suggested scheme implies a far better and more systematic monitoring than the current system, ensuring the consumer a higher degree of food safety.  相似文献   

Pancreatitis in a cat demonstrating pancreatic duct dilatation ultrasonographically     

Wall M  Biller DS  Schoning P  Olsen D  Moore LE 《Journal of the American Animal Hospital Association》2001,37(1):49-53

A 17-year-old, castrated male domestic shorthair cat presented with nonspecific clinical findings of three days' duration. Complete blood counts and serum biochemistry profiles revealed evidence of hepatic dysfunction. Ultrasonographic evaluation revealed abnormalities consistent with pancreatitis, with suspected pancreatic duct dilatation in the left limb of the pancreas. Surgery and eventual necropsy confirmed a diagnosis of pancreatitis, along with pancreatic duct dilatation. Dilatation of the pancreatic duct may be another ultrasonographic change to look for when suspecting feline pancreatitis.  相似文献   

Mountain laurel toxicosis in a dog     

Ingrid O. Manhart MS  DVM  Camille DeClementi VMD  DABT  DABVT  Christine L. Guenther DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2013,23(1):77-81

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Genomic prediction of the performance of hybrids and the combining abilities for line by tester trials in maize     

Ao Zhang  Paulino Pérez-Rodríguez  Felix San Vicente  Natalia Palacios-Rojas  Thanda Dhliwayo  Yubo Liu  Zhenhai Cui  Yuan Guan  Hui Wang  Hongjian Zheng  Michael Olsen  Boddupalli M.Prasanna  Yanye Ruan  Jose Crossa  Xuecai Zhang 《作物学报(英文版)》2022,(1):109-116

The two most important activities in maize breeding are the development of inbred lines with high values of general combining ability(GCA)and specific combining ability(SCA),and the identification of hybrids with high yield potentials.Genomic selection(GS)is a promising genomic tool to perform selection on the untested breeding material based on the genomic estimated breeding values estimated from the genomic prediction(GP).In this study,GP analyses were carried out to estimate the performance of hybrids,GCA,and SCA for grain yield(GY)in three maize line-by-tester trials,where all the material was phenotyped in 10 to 11 multiple-location trials and genotyped with a mid-density molecular marker platform.Results showed that the prediction abilities for the performance of hybrids ranged from 0.59 to0.81 across all trials in the model including the additive effect of lines and testers.In the model including both additive and non-additive effects,the prediction abilities for the performance of hybrids were improved and ranged from 0.64 to 0.86 across all trials.The prediction abilities of the GCA for GY were low,ranging between-0.14 and 0.13 across all trials in the model including only inbred lines;the prediction abilities of the GCA for GY were improved and ranged from 0.49 to 0.55 across all trials in the model including both inbred lines and testers,while the prediction abilities of the SCA for GY were negative across all trials.The prediction abilities for GY between testers varied from-0.66 to 0.82;the performance of hybrids between testers is difficult to predict.GS offers the opportunity to predict the performance of new hybrids and the GCA of new inbred lines based on the molecular marker information,the total breeding cost could be reduced dramatically by phenotyping fewer multiple-location trials.  相似文献   

Three-dimensional electro-anatomical mapping and radiofrequency ablation as a novel treatment for atrioventricular accessory pathway in a horse: A case report     

Eva Buschmann  Glenn Van Steenkiste  Tim Boussy  Ingrid Vernemmen  Stijn Schauvliege  Annelies Decloedt  Gunther van Loon 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2023,37(2):728-734

We describe the diagnosis and treatment of an atrioventricular accessory pathway (AP) in a horse using 3-dimensional electro-anatomical mapping (3D EAM) and radiofrequency catheter ablation (RFCA). During routine evaluation of the horse, intermittent ventricular pre-excitation was identified on the ECG, characterized by a short PQ interval and abnormal QRS morphology. A right cranial location of the AP was suspected from the 12-lead ECG and vectorcardiography. After precise localization of the AP using 3D EAM, ablation was performed and AP conduction was eliminated. Immediately after recovery from anesthesia an occasional pre-excited complex still was observed, but a 24-hour ECG and an ECG during exercise 1 and 6 weeks after the procedure showed complete disappearance of pre-excitation. This case shows the feasibility of 3D EAM and RFCA to identify and treat an AP in horses.  相似文献   

Climatic influences on development and survival of free-living stages of equine strongyles: implications for worm control strategies and managing anthelmintic resistance   总被引：1，自引：0，他引：1  

Nielsen MK  Kaplan RM  Thamsborg SM  Monrad J  Olsen SN 《Veterinary journal (London, England : 1997)》2007,174(1):23-32

Development of resistance to anthelmintic drugs by horse strongyles constitutes a growing threat to equine health because it is unknown when new drug classes can be expected on the market. Consequently, parasite control strategies should attempt to maintain drug efficacy for as long as possible. The proportion of a parasite population that is not exposed to anthelmintic treatment is described as being "in refugia" and although many factors affect the rate at which resistance develops, levels of refugia are considered the most important as these parasites are not selected by treatment and so provide a pool of sensitive genes in the population. Accordingly, treatment should be avoided when pasture refugia are small because such treatments will place significant selection pressure for resistance on worm populations. Given this new paradigm for parasite control, it has become important to identify seasons and circumstances wherein refugia are diminished. Free-living stages of equine strongyles are highly dependent on climatic influences, and this review summarises studies of strongyle development and survival under laboratory and field conditions in Northern (cool) temperate, Southern (warm) temperate and subtropical/tropical climates. In Northern temperate climates, refugia are smallest during the winter. In contrast, refugia are lowest during the summer in warm temperate and subtropical/tropical climates. Although adverse seasonal changes clearly have significant effects on the ability of free living stages of strongyle nematode parasites to survive and develop, available data suggest that climatic influences cannot effectively "clean" pastures from one grazing season to the next.  相似文献   

Thoracolumbar meningeal fibrosis in pugs     

Cecilia Rohdin  Ingrid Ljungvall  Jens Häggström  Alexandra Leijon  Kerstin Lindblad-Toh  Kaspar Matiasek  Marco Rosati  Peter Wohlsein  Karin Hultin Jäderlund 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(2):797-807

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Effect of feline characteristics on plasma N-terminal-prohormone B-type natriuretic peptide concentration and comparison of a point-of-care test and an ELISA test     

Sofia Hanås  Bodil S. Holst  Katja Höglund  Jens Häggström  Anna Tidholm  Ingrid Ljungvall 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(3):1187-1197

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Association of diet with left ventricular wall thickness,troponin I and IGF-1 in cats with subclinical hypertrophic cardiomyopathy     

Ingrid van Hoek  Hannah Hodgkiss-Geere  Elizabeth F. Bode  Julie Hamilton-Elliott  Paul Mõtsküla  Valentina Palermo  Yolanda Martinez Pereira  Geoff J. Culshaw  Jeremy Laxalde  Joanna Dukes-McEwan 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(6):2197-2210

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