A retrospective evaluation of hops ingestion in 177 dogs (2005–2018)     

Jami Becker DVM  Ahna G. Brutlag DVM  MS  DABT  DABVT  Lynn Hovda RPh  DVM  MS  DACVIM  Aaron Rendahl PhD  Kelly M. Tart DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2023,33(3):348-353

  相似文献   

Diagnosis and successful management of an extradural compressive hematoma secondary to diphacinone poisoning in a dog     

Francesca P. Solari DVM  Alec H. Sherman DVM  April E. Blong DVM  DACVECC  Starr Cameron MS  BVetMed  DACVIM  Rebecca A. Walton DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2023,33(1):101-106

  相似文献   

Echocardiographic indicators of fluid responsiveness in hospitalized dogs with compromised hemodynamics and tissue hypoperfusion     

Pablo A. Donati MS  DVM  Cesar Villalta DVM  Tarragona Lisa PhD  DVM  Rodrigo Fravega DVM  Ignacio Sandez Cordero DVM  Marcela Tunesi DVM  Juan Manuel Guevara DVM  Pablo E. Otero PhD  DVM 《Journal of Veterinary Emergency and Critical Care》2023,33(1):22-28

  相似文献   

A multicenter retrospective case–cohort study on the prevalence of incisional morbidities in late pregnant mares following exploratory celiotomy (2014–2019): 579 cases     

Chelsea E. Klein DVM  Darko Stefanovski PhD  MS  Alison K. Gardner DVM  MS  DACVS  DACVECC  J. Brett Woodie DVM  MS  DACVS  Rolf M. Embertson DVM  DACVS  Margaret C. Mudge VMD  DACVS  DACVECC  Samuel D. Hurcombe BSc  BVMS  MS  DACVIM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2023,33(1):59-69

  相似文献   

Reinvigoration of Pinus radiata is associated with partial recovery of juvenile-like polyamine concentrations     

Fraga MF  Rodríguez R  Cañal MJ 《Tree physiology》2003,23(3):205-209

Polyamine concentrations in consecutive radiata pine (Pinus radiata D. Don) grafts of 30-year-old trees on 1-year-old seedling rootstocks were analyzed by high performance liquid chromatography coupled with fluorescence detection to determine whether reinvigoration is associated with the recovery of polyamine concentrations typical of those in juvenile tissues. Reinvigoration of radiata pine was correlated with the attainment of some, but not all, polyamines characteristic of juvenile trees. In response to reinvigoration, free putrescine, the ratio of free polyamines to low molecular weight polyamine conjugates, and the relative content of putrescine versus spermidine plus spermine increased to values approaching those characteristic of juvenile tissue. In contrast, there was no noticeable change in the concentrations of low molecular weight polyamine conjugates during reinvigoration even though these conjugates increased greatly during tree maturation. We conclude that certain polyamines defined as reinvigoration markers can be used in forestry upgrading programs to assess the morphogenic ability of reinvigorated trees.  相似文献   

Enzymic isolation of lignin from wood and pulps     

J. Polčin  B. Bezúch 《Wood Science and Technology》1978,12(2):149-158

After enzymic hydrolysis of polysaccharides in milled wood or pulp the unhydrolysed lignin residue becomes soluble in certain polar solvents. Extensive disintegration of the wood is necessary to obtain a sufficient accessibility toward the enzyme. For milling a porcelain rotary ball mill is recommended. A relationship has been found between the milling energy, which is proportional to the size of the mill, the milling time, and the yield of ball-milled wood lignin (BMWL). Enzymatically isolated lignin (EIL) requires a critical milling time which is shorter than that for obtaining maximum yields of BMWL. A procedure for isolation of the total lignin content from wood and pulps in the form of three fractions has been developed, giving a water soluble, low molecular carbohydrate-lignin complex by water extraction of ball-milled wood, a BMWL-carbohydrate complex by subsequent extraction with dioxane, and a EIL-carbohydrate complex by dioxane extraction of the residue after enzymic hydrolysis.  相似文献   

Timber investment returns for selected plantations and native forests in South America and the Southern United States     

Frederick Cubbage  Patricio Mac Donagh  José Sawinski Júnior  Rafael Rubilar  Pablo Donoso  Arnaldo Ferreira  Vitor Hoeflich  Virginia Morales Olmos  Gustavo Ferreira  Gustavo Balmelli  Jacek Siry  Mirta Noemi Báez  José Alvarez 《New Forests》2007,33(3):237-255

Timber investment returns were estimated for the principal exotic and selected native species in the Southern Cone of Latin America and in the Southern United States. Exotic eucalyptus plantations in South America were most profitable, with internal rates of returns (IRRs) ranging from 13% to 23%, followed by exotic loblolly pine, with IRRs from 9% to 17%. Average loblolly pine plantation returns in the US South were less profitable, with an IRR of about 9.5%, and natural forest management in the South had IRRs of 4% to 8%. Subtropical native species plantations of the best araucaria and nothofagus species had reasonable financial returns, with IRRs ranging from 5% to 13%. Subtropical or tropical native forests had fewer commercial timber species, and had much lower growth rates and returns. Their IRRs were less than 4%, or even negative for unmanaged stands. State subsidy payments for forest plantations or for timber stand improvements increased IRRs somewhat and reserving areas for environmental protection reduced their IRRs slightly. Including land costs in the cash flows decreased these internal rates of return substantially. Natural stand returns in Latin America were much less than those of plantations, but management of those stands offered better rates of return than only holding the land.  相似文献   

Photosynthetic capacity of leaves of Eucalyptus globulus (Labill.) growing in the field with different nutrient and water supplies     

Pereira JS  Chaves MM  Fonseca F  Araújo MC  Torres F 《Tree physiology》1992,10(4):381-389

A technique was tested for obtaining water relations parameters from individual fascicles of loblolly pine needles by the pressure-volume curve method. Comparisons were made between parameters derived from (1) individual fascicles that were rehydrated in a pressure chamber after being removed from the shoot and (2) fascicles that were rehydrated on the shoot. Estimates of tissue osmotic potential for needles rehydrated by the two methods were significantly different for needles from terminal shoots, but not significantly different for needles from lateral shoots. Similarly, a significant difference in the estimated tissue elasticity at zero water potential was noted for needles on terminal shoots, but not for those on lateral shoots. It is suggested that differences due to rehydration method are related to the duration of the rehydration period and not the choice of technique. The use of fascicles of needles, rehydrated after detachment, allows repeated estimation of the tissue water relations of a single conifer shoot.  相似文献   

Activities of some Brazilian plants against larvae of the mosquito Aedes aegypti     

de Mendonça FA  da Silva KF  dos Santos KK  Ribeiro Júnior KA  Sant'Ana AE 《Fitoterapia》2005,76(7-8):629-636

The insecticidal activities of extracts and oils of seventeen medicinal plants of Brazil have been determined using an Aedes aegypti larvicidal bioassay. Oils from Anacardium occidentalis, Copaifera langsdorffii, Carapa guianensis, Cymbopogon winterianus and Ageratum conyzoides showed high activities with LC50 values of 14.5, 41, 57, 98 and 148 microg/l, respectively. The most active ethanolic extract tested was that from the stem of Annona glabra which presented an LC50 value of 27 microg/l. The potential application of cashew nut oil, an industrial by-product with low commercial value, in the control of the vector of dengue and yellow fever, may be proposed.  相似文献   

Zur Taxonomie,Biologie und Ausbreitung der Tannentrieblaus Dreyfusia nordmannianae (Eckst.) (Hom., Adelgidae) in Tirol     

Dr. Barbara Baúer-Schmid 《Journal of pest science》1983,56(7):128-131

Studies made in the inquirydistrict of Kufstein/Wörgl, Tyrol, showedDreyfusia normannianae (Eckst.) being the sole species of genusAdelges living on the firs. Observations on the phaenology of the generations at five different localities showed among other things that there was no summer-sistens-generation. The winter-mortality of the aphid on twigs and stems amounted to 7 till 9%. The rates of progrediens- and sistensgeneration as well as the number of eggs laid by sistens female were determined. At last experiments were made on the spreading. Within some weeks the youngA. nordmannianae progredientes and sistentes had a maximal migration distance of about three meters.  相似文献