404 research outputs found
Thermal analysis system /TAS-1/ program
Digital computer program develops temperature control system which maintains various subsystems within proper temperature limits. Coding is simple and input rules are easy to use and remember. Output format is easy to understand and to analyze for error diagnosis
Thermal analysis system 1 - User's manual
Computer program user manual for thermal design analysis in temperature control system
Rotary balance data for a typical single-engine general aviation design for an angle-of-attack range of 8 deg to 90 deg. 2: High-wing model C
Aerodynamic characteristics obtained in a helical flow environment utilizing a rotary balance located in the Langley spin g tunnel are presented in plotted form for a 1/6 scale, single engine, high wing, general aviation model. The configurations tested included the basic airplane and control deflections, wing leading edge devices, tail designs, and airplane components. Data are presented without analysis for an angle of attack range of 8 deg to 90 deg and clockwise and counter clockwise rotations covering a spin coefficient range from 0 to 0.9
Use of faba bean (Vicia faba L.) hulls as substrate for Pleurotus ostreatus – Potential for combined mushroom and feed production
A circular concept involving use of faba bean hulls for production of oyster mushrooms (Pleurotus ostreatus (Jacq.) P. Kumm.) and the post-harvest residues for feed purposes was evaluated. Faba bean hulls are a waste remaining after the beans are dehulled to decrease the content of anti-nutritional factors and increase the food value of the beans. Faba bean hulls proved very suitable as substrate for production of oyster mushrooms, with biological efficiency of 109 ± 28%. The fruiting bodies produced were comparable to commercially sold mushrooms in terms of morphology, protein content, protein quality, and chemical composition. After mushroom harvest, 48.4 ± 0.6% of initial dry weight (dwt) of the substrate remained and showed significant changes in proximate composition, with an increase in protein concentration from 207.9 ± 8.6 to 346.6 ± 16.5 g kg−1 dwt and a significant increase in 14 of 16 amino acids analyzed, including methionine. Concentrations of the anti-nutritional compounds vicine and convicine were below the detection limit after mushroom harvest, while their initial concentration was 5.7 ± 0.1 and 1.4 ± 0.04 g kg−1 dwt, respectively. Tannin concentration was reduced by approximately 50%, to a final level of 9.0 ± 1.6 g kg−1 dwt. Comparison of the spent mushroom substrate with a commonly used feedstuff for pigs indicated potential for the spent substrate to be a valuable protein source in pig diets. This study demonstrates the potential for achieving complete circular use of agro waste and has implications for development of production systems well suited in the biobased society
A possible role of ground-based microorganisms on cloud formation in the atmosphere
The formation of clouds is an important process for the atmosphere, the
hydrological cycle, and climate, but some aspects of it are not completely
understood. In this work, we show that microorganisms might affect cloud
formation without leaving the Earth's surface by releasing biological
surfactants (or biosurfactants) in the environment, that make their way into
atmospheric aerosols and could significantly enhance their activation into
cloud droplets.
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In the first part of this work, the cloud-nucleating efficiency of standard
biosurfactants was characterized and found to be better than that of any
aerosol material studied so far, including inorganic salts. These results
identify molecular structures that give organic compounds exceptional
cloud-nucleating properties. In the second part, atmospheric aerosols were
sampled at different locations: a temperate coastal site, a marine site, a
temperate forest, and a tropical forest. Their surface tension was measured
and found to be below 30 mN/m, the lowest reported for aerosols, to our
knowledge. This very low surface tension was attributed to the presence of
biosurfactants, the only natural substances able to reach to such low
values.
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The presence of strong microbial surfactants in aerosols would be consistent
with the organic fractions of exceptional cloud-nucleating efficiency
recently found in aerosols, and with the correlations between algae bloom
and cloud cover reported in the Southern Ocean. The results of this work
also suggest that biosurfactants might be common in aerosols and thus of
global relevance. If this is confirmed, a new role for microorganisms on the
atmosphere and climate could be identified
Relativistic calculations of the lifetimes and hyperfine structure constants in Zn
This work presents accurate {\it ab initio} determination of the magnetic
dipole (M1) and electric quadrupole (E2) hyperfine structure constants for the
ground and a few low-lying excited states in Zn, which is one of
the interesting systems in fundamental physics. The coupled-cluster (CC) theory
within the relativistic framework has been used here in this calculations. Long
standing demands for a relativistic and highly correlated calculations like CC
can be able to resolve the disagreements among the lifetime estimations
reported previously for a few low-lying states of Zn. The role of
different electron correlation effects in the determination of these quantities
are discussed and their contributions are presented.Comment: 9 pages, 1 figure. submitted to J. Phys. B Fast Trac
Coordinated and tailored work rehabilitation: a randomized controlled trial with economic evaluation undertaken with workers on sick leave due to musculoskeletal disorders
Introduction In Denmark, the magnitude and impact of work disability on the individual worker and society has prompted the development of a new "coordinated and tailored work rehabilitation" (CTWR) approach. The aim of this study was to compare the effects of CTWR with conventional case management (CCM) on return-to-work of workers on sick leave due to musculoskeletal disorders (MSDs). Methods The study was a randomized controlled trial with economic evaluation undertaken with workers on sick leave for 4-12 weeks due to MSDs. CTWR consists of a work disability screening by an interdisciplinary team followed by the collaborative development of a RTW plan. The primary outcome variable was registered cumulative sickness absence hours during 12 months follow-up. Secondary outcomes were work status as well as pain intensity and functional disability, measured at baseline, 3 and 12 months follow-up. The economic evaluation (intervention costs, productivity loss, and health care utilization costs) was based on administrative data derived from national registries. Results For the time intervals 0-6 months, 6-12 months, and the entire follow-up period, the number of sickness absence hours was significantly lower in the CTWR group as compared to the control group. The total costs saved in CTWR participants compared to controls were estimated at US 10,666 per person at 12 months follow-up. Conclusions Workers on sick leave for 4-12 weeks due to MSD who underwent "CTWR" by an interdisciplinary team had fewer sickness absence hours than controls. The economic evaluation showed that-in terms of productivity loss-CTWR seems to be cost saving for the society
Double helix of research and practice—developing a practice model for crisis resolution and home treatment through participatory action research
Over the last five years Crisis Resolution/Home Treatment (CR/HT) teams have been established in Norway. These teams provide an alternative to in-patient acute care services offering assessment as well as direct care. This paper addresses a method of examining the nature of practice models that are being developed in a CR/HT team incorporating the philosophy of open dialogue and the open lifeworld approach. The overall design of this research is action research applying a cooperative inquiry perspective. Multistage focus group interviews are used as a method for generating data, followed by phenomenological–hermeneutic approach in analyzing the data. Three themes were identified: (a) “keeping the dialogue open” referring to the emphasis of openness in dialogues and opening up for a variety of perspectives on what's going on; (b) “tolerance of uncertainty” referring to the need to accept and deal with uncertainty and multiplicity; and (c) “nurturing everyday life issues” referring to the emphasis on illustrating clinical situations in detail through remaking of stories. The on-going co-processes of research and practice was a double helix that links the happenings in the practice with the findings in the research revealing the knowledge in practice and further developing that knowledge
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