Judgment of solanum: A dissertation on the grading problem     

Harold L. Bailey 《American Journal of Potato Research》1926,3(4):122-124

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Feinstruktur des Ammonshornes von Rind, Schaf und Ziege     

S. Von  Baer  G. Hummel  H. Goller 《Anatomia, histologia, embryologia》1985,14(3):242-261

Hippocampi of 8 cattle, 12 sheep and 17 goats of both sexes and of different ages were studied light and electronmicroscopically.  相似文献   

Euphemisms for “euthanize”          下载免费PDF全文

Harold M. Zweighaft 《The Canadian veterinary journal. La revue veterinaire canadienne》1990,31(9):611

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Potential long-term growth gains from early clump thinning of coppice-regenerated oak stands     

Kim E. Lowell  Harold E. Garrett  Robert J. Mitchell 《New Forests》1989,3(1):11-19

A study was established in the Missouri Ozarks to evaluate coppice regeneration of oak. Five years after a 32-year-old stand was clearcut and regenerated naturally through stump sprouts, the dominant sprout on each stump was identified based upon height. Treated plots were thinned to the single dominant sprout on each stump whereas control plots were not thinned. Twenty-five years later the largest 247, 371, 494, and 618 stems per ha were examined and height of the dominant sprout at age 5 was found to be strongly related to dbh at age 30 in both thinned and unthinned plots. However, in the thinned plots, the largest 494 stems per ha were on average 11%, 28%, and 58% greater, respectively, in height, dbh, and volume compared to similar dominant sprouts in unthinned plots. Logistic regression analysis was used to develop curves for the evaluation of potential gains from clump thinning. In this analysis, the average height of a stand at age 5 was used to estimate thinning gains at age 30.  相似文献   

Regional mixed-effects height–diameter models for loblolly pine (<Emphasis Type="Italic">Pinus taeda</Emphasis> L.) plantations     

Guillermo Trincado  Curtis L. VanderSchaaf  Harold E. Burkhart 《European Journal of Forest Research》2007,126(2):253-262

A height–diameter mixed-effects model was developed for loblolly pine (Pinus taeda L.) plantations in the southeastern US. Data were obtained from a region-wide thinning study established by the Loblolly Pine Growth and Yield Research Cooperative at Virginia Tech. The height–diameter model was based on an allometric function, which was linearized to include both fixed- and random-effects parameters. A test of regional-specific fixed-effects parameters indicated that separate equations were needed to estimate total tree heights in the Piedmont and Coastal Plain physiographic regions. The effect of sample size on the ability to estimate random-effects parameters in a new plot was analyzed. For both regions, an increase in the number of sample trees decreased the bias when the equation was applied to independent data. This investigation showed that the use of a calibrated response using one sample tree per plot makes the inclusion of additional predictor variables (e.g., stand density) unnecessary. A numerical example demonstrates the methodology used to predict random effects parameters, and thus, to estimate plot specific height–diameter relationships.  相似文献   

Reducing error in feline platelet enumeration by addition of Iloprost to blood specimens: comparison to prostaglandin E1 and EDTA          下载免费PDF全文

Harold W. Tvedten  Kerstin Bäcklund  Inger E. Lilliehöök 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2015,44(2):179-187

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Eastern Newt (Notophthalmus viridescens)     

Samuel Christopher Holstege  Alexander B. Baer 《The Forestry Chronicle》2021,32(1):130-131

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Comparison of a Schmidt and Haensch refractometer and an Atago PAL‐USG Cat refractometer for determination of urine specific gravity in dogs and cats     

Harold W. Tvedten  Aså Norén 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2014,43(1):63-66

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Comparative efficiency of two enrichment and four plating media for isolation of Staphylococcus aureus   总被引：4，自引：0，他引：4  

E F Baer  M M Gilden  C L Wienke  M B Mellitz 《Journal of the Association of Official Analytical Chemists》1971,54(3):736-738

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A biologically-consistent stand growth model for loblolly pine in the Piedmont physiographic region, USA   总被引：1，自引：0，他引：1  

Oscar García  Harold E. BurkhartRalph L. Amateis 《Forest Ecology and Management》2011,262(11):2035-2041

A theory-influenced dynamical stand growth model formulation described well the behavior of thinned and unthinned loblolly pine plantations. A simplification containing few free parameters performed as well as a fully parametrized version. It seems particularly well suited to situations where available data is scarce. The stand model can be interfaced to additional climate, nutrition and carbon cycling modules for studying the effects of a changing environment.  相似文献