User profiles for James Richards

James Richards

University of Delaware
Verified email at udel.edu
Cited by 6006

[HTML][HTML] Antibiotic growth promoters in agriculture: history and mode of action

JJ Dibner, JD Richards - Poultry science, 2005 - Elsevier
This report will review the history of antibiotic growth promoter (AGP) use in the animal industry,
concerns about development of antimicrobial resistance, and response in the European …

Hydraulic lift: consequences of water efflux from the roots of plants

MM Caldwell, TE Dawson, JH Richards - Oecologia, 1998 - Springer
Hydraulic lift is the passive movement of water from roots into soil layers with lower water
potential, while other parts of the root system in moister soil layers, usually at depth, are …

Hydraulic lift: Substantial nocturnal water transport between soil layers by Artemisia tridentata roots

JH Richards, MM Caldwell - Oecologia, 1987 - Springer
Diel soil water potential fluctuations reflected daytime depletion and nocturnal resupply of
water in upper soil layers. Transpiration suppression experiments demonstrated that water …

Hydraulic lift: water efflux from upper roots improves effectiveness of water uptake by deep roots

MM Caldwell, JH Richards - Oecologia, 1989 - Springer
Deuterated water absorbed by deep roots of Artemisia tridentata appeared in the stem water
of neighboring Agropyron desertorum tussocks. This supports the hypothesis that water …

Nighttime Stomatal Conductance and Transpiration in C3 and C4 Plants

MA Caird, JH Richards, LA Donovan - Plant physiology, 2007 - academic.oup.com
Incomplete stomatal closure during the night is observed in a diverse range of C3 and C4
species (Fig. 1; Supplemental Table S1) and can lead to substantial nighttime transpirational …

Gut microbial metabolites limit the frequency of autoimmune T cells and protect against type 1 diabetes

E Mariño, JL Richards, KH McLeod, D Stanley… - Nature …, 2017 - nature.com
Gut dysbiosis might underlie the pathogenesis of type 1 diabetes. In mice of the non-obese
diabetic (NOD) strain, we found that key features of disease correlated inversely with blood …

The measurement of human motion: A comparison of commercially available systems

JG Richards - Human movement science, 1999 - Elsevier
Field tests were conducted to assess the clinical performance characteristics of seven
optical-based and one electromagnetic-based biomechanical measurement system. A device …

Genetics of drought adaptation in Arabidopsis thaliana: I. Pleiotropy contributes to genetic correlations among ecological traits

JK Mckay, JH Richards, T Mitchell‐Olds - Molecular ecology, 2003 - Wiley Online Library
We examined patterns of genetic variance and covariance in two traits (i) carbon stable isotope
ratio δ 13 C (dehydration avoidance) and (ii) time to flowering (drought escape), both of …

[PDF][PDF] Plant responses to defoliation: a physiological, morphological and demographic evaluation

DD Briske, JH Richards - Wildland plants: physiological ecology and …, 1995 - agrilife.org
The importance of developing the fundamental principles of rangeland management from
knowledge of the growth requirements and life history attributes of important plant species was …

PCR detection of bacteria in seven minutes

P Belgrader, W Benett, D Hadley, J Richards, P Stratton… - Science, 1999 - science.org
Identifying, monitoring, and isolating the source of an outbreak of infectious disease can
sometimes be difficult. The process would be greatly facilitated by a portable instrument that …