Protein Losing Enteropathy following Fontan Palliation in the Single Ventricle Population

Congenital heart defects requiring single ventricle palliation are a rare but life-threatening occurrence. There are multiple defects resulting in single ventricle physiology including defects in which the right or left ventricle within the heart is either undeveloped (hypoplastic left heart syndrome, hypoplastic right heart syndrome), or the valve to the main pulmonary artery did not form (pulmonary atresia). These defects prevent the heart from supplying adequate blood flow to the lungs or body. Single ventricle congenital heart defects are not easily treated surgically due to their complexity in nature. Single ventricle surgical palliation typically involves three open-heart surgeries including the Norwood or Hybrid Procedure, the Bidirectional Glenn procedure, and finally the Fontan procedure, (Hardiman, 2013, p. 327)

Diffusion-Adoption of Personal Computers and the Internet in Farm Business Decisions: Southeastern Beef and Peanut Farmers

A survey was conducted during 1998 among two targeted segments of southeastern agriculture producers to evaluate questions about the effect of PC and Internet technology on farm operators\u27 business activities and agriculture decision making. Beef cattle producers in Alabama (320) and peanut producers (327) in Alabama, Georgia, and Florida were sampled. 647 questionnaires were mailed. The questionnaire was completed and returned by 241 farmers. The Diffusion-Adoption Model was employed to characterize farmers by stage in the technology adoption process. Farmers who use the Internet were examined for their frequency and nature of Internet use when making farm business decisions

Using thermal imagery and changes to stem radius to assess water stress in two coniferous tree species

With a warming climate and greater evaporative demand, many forest ecosystems are increasingly affected by water limitation as prolonged water deficits reduce tree-level growth and survival. Monitoring water deficit traditionally requires daily measurements of sap flow or radial flux from automated sensors mounted on individual trees. As an alternative approach, we evaluated the use of airborne thermal imagery from unmanned aerial vehicles as a rapid, scalable tool for assessing tree-level water stress. Plant water stress leads to higher leaf temperatures when soil moisture is low and evaporative demand is high. To detect this response, we modelled the difference between leaf and air temperature (∆T) as a function of local soil moisture vapour pressure deficit, and wind speed for two tree species, lodgepole pine (Pinus contorta var. latifolia) and white spruce (Picea glauca). We used those same weather and soil conditions to model dendrometer-based measurements of daily changes in internal tree water deficit (∆TWD). While canopy leaf temperature and daily change in tree water deficit showed little direct correlation with one another, both variables responded to soil moisture, vapour pressure deficit, and wind speed in a manner that reflects a common response to water stress as soil became progressively drier over the summer months. The two species showed similar responses to environmental conditions, with some differences related to species-specific strategies for drought avoidance. The application of thermal imagery to detect water stress in natural ecosystems can improve understanding how trees experience water stress across species and environmental conditions

Using thermal imagery and changes to stem radius to assess water stress in two coniferous tree species

With a warming climate and greater evaporative demand, many forest ecosystems are increasingly affected by water limitation as prolonged water deficits reduce tree-level growth and survival. Monitoring water deficit traditionally requires daily measurements of sap flow or radial flux from automated sensors mounted on individual trees. As an alternative approach, we evaluated the use of airborne thermal imagery from unmanned aerial vehicles as a rapid, scalable tool for assessing tree-level water stress. Plant water stress leads to higher leaf temperatures when soil moisture is low and evaporative demand is high. To detect this response, we modelled the difference between leaf and air temperature (∆T) as a function of local soil moisture vapour pressure deficit, and wind speed for two tree species, lodgepole pine (Pinus contorta var. latifolia) and white spruce (Picea glauca). We used those same weather and soil conditions to model dendrometer-based measurements of daily changes in internal tree water deficit (∆TWD). While canopy leaf temperature and daily change in tree water deficit showed little direct correlation with one another, both variables responded to soil moisture, vapour pressure deficit, and wind speed in a manner that reflects a common response to water stress as soil became progressively drier over the summer months. The two species showed similar responses to environmental conditions, with some differences related to species-specific strategies for drought avoidance. The application of thermal imagery to detect water stress in natural ecosystems can improve understanding how trees experience water stress across species and environmental conditions.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Vortex propagation and radiation emission in Josephson tunnel junctions

The fundamental frequency of emitted radiation from a Josephson tunnel junction biased on a « zero-field step » is measured and found to obey the voltage-frequency relation eV = hf, as predicted by the vortex-motion picture. Some aspects of radiation emission by large-critical-current junctions are also considered.On mesure la fréquence fondamentale du rayonnement émis par une jonction Josephson, polarisée sur une « marche de champ nul », et on constate que cette fréquence obéit à la relation entre la tension et la fréquence e V = hf, ainsi que le prédit le modèle de mouvement en tourbillons. On examine également quelques aspects de l'émission d'un rayonnement par les jonctions à courant critique élevé