Carbon Sequestration on Utah Rangelands: A Landowner Perspective

Rangelands have significant potential to sequester carbon and contribute to the mitigation of climate change. This research aimed at better understanding the beliefs, attitudes, and perceptions of Utah rangeland owners concerning carbon sequestration and climate change, examining their current grazing management practices in relation to soil carbon sequestration, and exploring factors influencing their likelihood of participating in future programs. Data were collected through interviews of Utah rangeland owners and range management professionals and a statewide rangeland owner survey. About two-thirds of respondents thought the climate had been changing over the last 30 years, were aware of carbon sequestration, and viewed it positively. Forty-one percent considered it an important management objective. Having positive attitudes was associated with having “biocentric” environmental value and believing climate change and its anthropogenic nature. Respondents valued the potential ecological benefits of carbon sequestration, indicated a preference for educational programs over financial incentives, and preferred working with private agricultural organizations over non-profit or government entities on carbon management. Thirty-seven percent of respondents reported likely to participate in a carbon sequestration program. Higher likelihood was associated with dependence on livestock production, considering carbon sequestration an important management objective, being interested in learning more about it, and placing high importance on the economic and climate benefits of participating in relevant programs. These results suggest potential challenges for developing technically sound and socially acceptable policies and programs for promoting carbon sequestration on private rangelands. Rangeland owners’ attitudes towards carbon sequestration may play a strong role in their participation in future programs. Although education and outreach are considered important, innovative strategies are needed to communicate the concept and processes of carbon sequestration with rangeland owners without politicizing the issue. One approach is to tailor education and outreach messages to focus on the ecological benefits of carbon sequestration. Efforts are also needed to enhance the cooperation between private agricultural organizations and government agencies to promote carbon management on private rangelands. Instead of developing new programs, funneling resources to improve the carbon sequestration potential of existing conservation programs and attract wider participation among rangeland owners may be another cost effective policy strategy

Rangeland Carbon Sequestration

Terrestrial carbon sequestration is the process through which carbon dioxide (CO2) from the atmosphere is absorbed by trees, plants and crops through photosynthesis, and stored as carbon in biomass (tree trunks, branches, grasses, foliage, and roots) and soils1. Terrestrial carbon sequestration can contribute to offsetting carbon dioxide emissions and mitigating climate change. Over 30% (770 million acres) of U.S. land cover is rangelands, yet in Utah, roughly 80 percent of land cover is rangelands2. Rangelands can be managed to increase soil carbon storage through more equitable distribution of grazing pressure over time and space to reduce forage plant defoliation and increase carbon inputs from standing plants to soils3. The overall ability of rangelands to sequester carbon depends on plant species, soil type, regional climate, topography, and management practice. Even though the per acre carbon sequestration potential of rangelands may be less than that of either forestlands or croplands, the large size of rangelands in Utah and the U.S. suggests a great overall carbon sequestration potential, particularly in below-ground biomass and soils4,5. What does this mean and what role can rangeland owners play in carbon sequestration

Area-Suction Boundary-Layer Control as Applied to the Trailing-Edge Flaps of a 35 Degree Swept-Wing Airplane

A wind-tunnel investigation was made to determine the effects on the aerodynamic characteristics of a 35 degree swept-wing airplane of applying area-suction boundary-layer control to the trailing-edge flaps. Flight tests of a similar airplane were then conducted to determine the effect of boundary-layer control in the handling qualities and operation of the airplane, particularly during landing. The wind-tunnel and flight tests indicated that area suction applied to the trailing-edge flaps produced significant increases in flap lift increment. Although the flap boundary-layer control reduced the stall speed only slightly, a reduction in minimum comfortable approach speed of about 12 knots was obtained

What is the location and extent of pathology in surgical cases of chronic biceps tendinopathy undergoing subpectoral bicep tenodesis?

The proximal aspect of the long head of the biceps brachii (LHBB) has long been implicated as a pain generator in the shoulder. Biceps tenodesis is one surgical treatment option for refractory biceps tendonitis. The purpose of this study was to examine the tendinopathic changes in the intra-articular segment of long head of the biceps tendon as well as all three zones of the bicipital tunnel in a cohort of patients with chronic refractory biceps symptoms

Operational management of trunk main discolouration risk

Despite significant on-going investment, water companies continue to receive an unacceptable number of discolouration related customer contacts. In this paper, data from intensive distribution system turbidity monitoring and cluster analysis of discolouration customer contacts indicate that a significant proportion of these contacts are due to material mobilising from the trunk main system, and operational flow increases are shown to have a higher discolouration risk than burst incidents. A trunk main discolouration incident highlighting this risk is discussed, demonstrating the need for pro-active trunk main risk assessments. To identify the source of the material event flow rates were modelled using the PODDS (prediction of discolouration in distribution systems) discolouration model. Best practice pro-active management is demonstrated in a case study where the PODDS model is used to implement managed incremental flow changes on a main with known discolouration risk with no discolouration impact to customers and significant cost savings

Collaborative action on soil fertility in South Asia: experiences from Bangladesh and Nepal

"Soil degradation – largely caused by unsustainable farming practices – is threatening food production in many parts of the world. To break the vicious cycle of over-reliance on agro-chemical inputs and inadequate additions of organic matter, farmers and policymakers need to focus on maintaining soil fertility through greater attention to soil organic matter, agroecological farming practices and the value chains that can supply organic fertiliser in large enough quantities. This paper represents a first step, describing recent initiatives in Bangladesh and Nepal to bring together government, NGOs, farmers and the private sector. Awareness of the problem is on the increase and small-scale solutions – from urban waste recycling to vermi-compost production – are proving that the potential exists. Policy support is now needed to scale these up.

STP-H7-CASPR: A Transition from Mission Concept to Launch

The Configurable and Autonomous Sensor Processing Research (CASPR) project is a university-led experiment developed by student and faculty researchers at the NSF Center for Space, High-performance, and Resilient Computing (SHREC) at the University of Pittsburgh for the Space Test Program – Houston 7 (STP-H7) mission to the International Space Station (ISS). Autonomous sensor processing, the mission theme of the CASPR experiment, is enabled by combining novel sensor technologies with innovative computing techniques on resilient and high-performance flight hardware in a small satellite (SmallSat) form-factor. CASPR includes the iSIM-90, an innovative, high-resolution optical payload for Earth-observation missions developed by SATLANTIS MICROSATS SL. For the CASPR mission, the opto-mechanics of iSIM-90 will be mounted atop a gimbal-actuated platform for agile, low-GRD (ground-resolved distance), and multispectral Earth-observation imaging. This mission will also feature the Prophesee Sisley neuromorphic, event-driven sensor for space situational awareness applications. The CASPR avionics system consists of the following: three radiation-tolerant, reconfigurable space computers, including one flight-proven CSP and two next-gen SSPs; one μCSP Smart Module; one power card; and one backplane. CASPR also features a sub-experiment with an AMD GPU to evaluate new accelerator technologies for space. CASPR is a highly versatile experiment combining a variety of compute and sensor technologies to demonstrate on-orbit capabilities in onboard data analysis, mission operations, and spacecraft autonomy. As a research sandbox, CASPR enables new software and hardware to be remotely uploaded to further enhance mission capabilities. Finally, as a university-led mission, cost is a limiting constraint, leading to budget-driven design decisions and the use of affordable methods and procedures. Other factors, such as a power budget and limited equipment, facilities, and engineering resources, pose additional challenges to the CASPR mission. To address these challenges, we describe cost-effective procedures and methods used in the assembly, integration, and testing of the CASPR experiment

CASPR: Autonomous Sensor Processing Experiment for STP-H7

As computing technologies improve, spacecraft sensors continue to increase in fidelity and resolution, their dataset sizes and data rates increasing concurrently. This increase in data saturates the capabilities of spacecraft-to-ground communications and necessitates the use of powerful onboard computers to process data as it is collected. The pursuit of onboard, autonomous sensor processing while remaining within the power and memory restrictions of embedded computing becomes vital to prevent the saturation of data downlink capabilities. This paper presents a new ISS research experiment to study and evaluate novel technologies in sensors, computers, and intelligent applications for SmallSat-based sensing with autonomous data processing. Configurable and Autonomous Sensor Processing Research (CASPR) is being developed to evaluate autonomous, onboard processing strategies on novel sensors and is set to be installed on the ISS as part of the DoD/NASA Space Test Program –Houston 7(STP-H7) mission. CASPR features a flight-qualified CSP space computer as central node and two flight-ready SSP space computers for apps execution, both from SHREC, a telescopic, multispectral imager from Satlantis Inc., an event-driven neuromorphic vision sensor, an AMD GPU subsystem, and Intel Optane phase-change memory. CASPR is a highly versatile ISS experiment meant to explore many facets of autonomous sensor processing in space

Age-related differences in adaptation during childhood: The influences of muscular power production and segmental energy flow caused by muscles

Acquisition of skillfulness is not only characterized by a task-appropriate application of muscular forces but also by the ability to adapt performance to changing task demands. Previous research suggests that there is a different developmental schedule for adaptation at the kinematic compared to the neuro-muscular level. The purpose of this study was to determine how age-related differences in neuro-muscular organization affect the mechanical construction of pedaling at different levels of the task. By quantifying the flow of segmental energy caused by muscles, we determined the muscular synergies that construct the movement outcome across movement speeds. Younger children (5-7 years; n = 11), older children (8-10 years; n = 8), and adults (22-31 years; n = 8) rode a stationary ergometer at five discrete cadences (60, 75, 90, 105, and 120 rpm) at 10% of their individually predicted peak power output. Using a forward dynamics simulation, we determined the muscular contributions to crank power, as well as muscular power delivered to the crank directly and indirectly (through energy absorption and transfer) during the downstroke and the upstroke of the crank cycle. We found significant age × cadence interactions for (1) peak muscular power at the hip joint [Wilks' Lambda = 0.441, F(8,42) = 2.65, p = 0.019] indicating that at high movement speeds children produced less peak power at the hip than adults, (2) muscular power delivered to the crank during the downstroke and the upstroke of the crank cycle [Wilks' Lambda = 0.399, F(8,42) = 3.07, p = 0.009] indicating that children delivered a greater proportion of the power to the crank during the upstroke when compared to adults, (3) hip power contribution to limb power [Wilks' Lambda = 0.454, F(8,42) = 2.54, p = 0.023] indicating a cadence-dependence of age-related differences in the muscular synergy between hip extensors and plantarflexors. The results demonstrate that in spite of a successful performance, children construct the task of pedaling differently when compared to adults, especially when they are pushed to their performance limits. The weaker synergy between hip extensors and plantarflexors suggests that a lack of inter-muscular coordination, rather than muscular power production per se, is a factor that limits children's performance ranges