Browsing Duke Scholarly Works by Submit Date
Now showing items 1-20 of 11850
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Biological feedbacks in global desertification
(Science, 1990)Studies of ecosystem processes on the Jornada Experimental Range in southern New Mexico suggest that longterm grazing of semiarid grasslands leads to an increase in the spatial and temporal heterogeneity of water, nitrogen, ... -
The impact of respiratory gating on improving volume measurement of murine lung tumors in micro-CT imaging
<jats:title>ABSTRACT</jats:title><jats:p>Small animal imaging has become essential in evaluating new cancer therapies as they are translated from the preclinical to clinical domain. However, preclinical imaging faces unique ... -
Deep learning based spectral extrapolation for dual-source, dual-energy x-ray computed tomography.
(Medical physics, 2020-09)<h4>Purpose</h4>Data completion is commonly employed in dual-source, dual-energy computed tomography (CT) when physical or hardware constraints limit the field of view (FoV) covered by one of two imaging chains. Practically, ... -
Dual source hybrid spectral micro-CT using an energy-integrating and a photon-counting detector.
(Physics in medicine and biology, 2020-10-21)Preclinical micro-CT provides a hotbed in which to develop new imaging technologies, including spectral CT using photon counting detector (PCD) technology. Spectral imaging using PCDs promises to expand x-ray CT as a functional ... -
Evaluating renal lesions using deep-learning based extension of dual-energy FoV in dual-source CT-A retrospective pilot study.
(European journal of radiology, 2021-06)<h4>Purpose</h4>Dual-source (DS) CT, dual-energy (DE) field of view (FoV) is limited to the size of the smaller detector array. The purpose was to establish a deep learning-based approach to DE extrapolation by estimating ... -
Advances in micro-CT imaging of small animals.
(Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB), 2021-08)<h4>Purpose</h4>Micron-scale computed tomography (micro-CT) imaging is a ubiquitous, cost-effective, and non-invasive three-dimensional imaging modality. We review recent developments and applications of micro-CT for preclinical ... -
MRI-Based Deep Learning Segmentation and Radiomics of Sarcoma in Mice.
(Tomography (Ann Arbor, Mich.), 2020-03)Small-animal imaging is an essential tool that provides noninvasive, longitudinal insight into novel cancer therapies. However, considerable variability in image analysis techniques can lead to inconsistent results. We have ... -
Principles of Micro X-ray Computed Tomography
(2021-08-09)The most authoritative and comprehensive resource available in the molecular-imaging field, written by over 170 of the leading scientists from around the world who have evaluated and summarized the most important methods, ... -
The 2018 Lake Louise Acute Mountain Sickness Score.
(High Altitude Medicine and Biology, 2018-03-13)Roach, Robert C., Peter H. Hackett, Oswald Oelz, Peter Bärtsch, Andrew M. Luks, Martin J. MacInnis, J. Kenneth Baillie, and The Lake Louise AMS Score Consensus Committee. The 2018 Lake Louise Acute Mountain Sickness Score. ... -
Abdominal Gunshot Causing Ventricular Septal Injury Without Perforation into the Pericardium.
(Journal of Cardiothoracic and Vascular Anesthesia, 2019-03-01) -
Home is Where the Heart Is: Interstage Home Monitoring in Infants With Single-Ventricle Heart Disease.
(Journal of cardiothoracic and vascular anesthesia, 2021-10) -
Methods to Visualize Structural and Functional Changes at Synapses
(Journal of Visualized Experiments, 2022-01-21) -
Plant responses to precipitation in desert ecosystems: integrating functional types, pulses, thresholds, and delays
(Oecologia, 2004)The 'two-layer' and 'pulse-reserve' hypotheses were developed 30 years ago and continue to serve as the standard for many experiments and modeling studies that examine relationships between primary productivity and rainfall ... -
Modifying the ‘pulse-reserve’ paradigm for deserts of North America: precipitation pulses, soil water and plant responses
(Oecologia, 2004)The 'pulse-reserve' conceptual model--arguably one of the most-cited paradigms in aridland ecology--depicts a simple, direct relationship between rainfall, which triggers pulses of plant growth, and reserves of carbon and ... -
Impact of drought on desert shrubs: Effects of seasonality and degree of resource island development
(Ecological Monographs, 1999-01-01)Large areas of semiarid grasslands in the southwestern United States have been virtually replaced by shrubs during the past century. Understanding the causes and consequences of such vegetation dynamics requires that we ... -
Global desertification: Building a science for dryland development
(Science, 2007-05)In this millennium, global drylands face a myriad of problems that present tough research, management, and policy challenges. Recent advances in dryland development, however, together with the integrative approaches of global ... -
Contingency in ecosystem but not plant community response to multiple global change factors
(New Phytologist, 2012)Community and ecosystem responses to global environmental change are contingent on the magnitude of change and interacting global change factors. To reveal whether responses are also contingent on the magnitude ... -
Scientific concepts for an integrated analysis of desertification
(Land Degradation and Development, 2011-03-01)The Global Drylands Observing System proposed in this issue should reduce the huge uncertainty about the extent of desertification and the rate at which it is changing, and provide valuable information to scientists, planners ... -
Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis
(Ecology Letters, 2011)Encroachment of woody plants into grasslands has generated considerable interest among ecologists. Syntheses of encroachment effects on ecosystem processes have been limited in extent and confined largely to pastoral land ...
