Search results for "yield"
showing 10 items of 1338 documents
GeneticParameters for Milk Somatic Cell Score and Relationships with Production Traits in Primparous Dairy Sheep
2007
A total of 13,066 first-lactation test-day records of 2,277 Valle del Belice ewes from 17 flocks were used to estimate genetic parameters for somatic cell scores (SCS) and milk production traits, using a repeatability test-day animal model. Heritability estimates were low and ranged from 0.09 to 0.14 for milk, fat, and protein yields, and contents. For SCS, the heritability of 0.14 was relatively high. The repeatabilities were moderate and ranged from 0.29 to 0.47 for milk production traits. The repeatability for SCS was 0.36. Flock-test-day explained a large proportion of the variation for milk production traits, but it did not have a big effect on SCS. The genetic correlations of fat and …
Letter by Wachter et al regarding article, "occult atrial fibrillation in cryptogenic stroke: detection by 7-day electrocardiogram versus implantable…
2013
To the Editor: We read with great interest the article of Ritter et al,1 which nicely demonstrates that the prolongation of ECG monitoring time increases the detection rate of paroxysmal atrial fibrillation in stroke patients, a result that is in concordance with existing literature. One aspect especially drawn to our attention was the lower yield of the Holter monitoring during simultaneous ECG recording as compared with the implantable loop recorder (ILR). ILRs only store automatically triggered episodes and can detect only atrial fibrillation (AF) episodes of ≥2 minutes, whereas Holter ECGs store (usually semiautomatically analyzed) continuous recordings and …
The effectiveness of several market integration measures when facing a market turmoil
2003
Many market integration measures are operationalized to compute their numerical values during a period characterized by the lack of stability and market turmoil. The results of the tests give their degree of effectiveness, and reveal that the measures based on the principles of asset valuation, versus statistical measures, more clearly yield the level of integration of financial markets. Besides, cross market arbitrage-linked measures and equilibrium models-linked measures provide complementary information and reflect different properties, and consequently, both types of measures may be useful in practice.
Can company restructuring create a healthier work environment, promote corporate entrepreneurship, and improve productivity?
2015
Abstract This study explores relationships between best practices in human resource (HR) management and the humanization of production processes. The study analyzes how best practices in HR management affect organizational health, productivity, and competitiveness in 4 workplaces with 480 employees. These workplaces implement a 3-year program of 20 practices in a sector specializing in fresh cut IV gamma products. Results show that these practices yield significant improvements in productivity indicators, risk prevention, corporate entrepreneurship, and work environment.
Individualized evaluation of health cost and health risks
2019
Abstract This paper presents an individualized evaluation of the health costs and health risks of haze pollution by conduction channels and conduction strengths. Ordinal probit model and quantile regression are used to analyze data on individuals in Hangzhou, an environmental friendly city in China. The analyses yield four findings. First, in Hangzhou, haze pollution increases citizens' health spending by >2.49 billion US dollars. Second, health costs are mainly driven by increased risks of respiratory infection. Third, the quantile analysis of health risks shows the conduction channels and corresponding strengths vary for different population groups by age and health status. Lastly, respon…
Electronic and optical properties of pristine, N- and S-doped water-covered TiO2 nanotube surfaces
2019
For rational design and improvement of electronic and optical properties of water-splitting photocatalysts, the ability to control the band edge positions relative to the water redox potentials and the photoresponse as a function of environmental conditions is essential. We combine ab initio molecular dynamics simulations with ab initio many-body theoretical calculations to predict the bandgap and band edge energies, as well as the absorption spectrum of pristine and N- and S-doped TiO2 nanotubes using the DFT+U and G0W0 approaches. Both levels of theory show similar trends, and N+S-codoping appears to be the optimal system for photocatalytic water splitting both in dry and humid conditions…
Applicability of a Polymerized Ionic Liquid/Carbon Nanoparticle Composite Electrolyte to Reductive Cyclization and Dimerization Reactions
2016
Abstract Recently, a reusable polymerized ionic liquid/carbon nanoparticle composite electrolyte was developed and effectively applied to a variety of oxidative transformations. The efficient recovery of the composite material and its application in subsequent electroorganic conversions without sacrificing yield adds to the sustainability of the protocol. Herein, we describe our efforts to expand the operational window of the composite electrolyte to include cathodically initiated processes occurring at potentials up to −2.6 V. The results indicate that the composite electrolyte is applicable to reductive processes, but the scope of transformations appears to be limited.
Theta-1 zeolite catalyst for increasing the yield of propene when cracking olefins and its potential integration with an olefin metathesis unit
2017
[EN] There is a need for on-purpose propene production technologies beyond energy-intensive steam cracking. Hexene is a compound with limited value that can be found in several streams in the refinery and can readily crack on zeolites at lower temperatures and shorter contact times than those used for cracking alkanes. Cracking over ZSM-5 zeolite yields high selectivity to light olefins. These results are improved by Theta-1 zeolite, which can yield a remarkable propene molar selectivity of 180% (90 wt%) at 90% conversion, close to the maximum thermodynamic yield. Moreover, crystal engineering allowed its TOF to increase by more than 50%. Based on these results we also identified some prosp…
Azole-containing cationic bis-cyclometallated iridium(iii) isocyanide complexes: a theoretical insight into the emission energy and emission efficien…
2019
Using a density functional theory approach, we explore the emission properties of a family of bis-cyclometallated cationic iridium(iii) complexes of general formula [Ir(C^N)2(CN-tert-Bu)2]+ that have tert-butyl isocyanides as neutral auxiliary ligands. Taking the [Ir(ppy)2(CN-tert-Bu)2]+ complex (Hppy = 2-phenylpyridine) as a reference, the effect of replacing the pyridine ring in the cyclometallating ppy ligand by a five-membered azole ring has been examined. To this end, two series of complexes differing by the nature of the atom (either nitrogen or carbon) linking the azole to the phenyl ring of the cyclometallating ligand have been designed. Each series is composed of three molecules ha…
Robust Mesoporous CoMo/γ-Al2O3 Catalysts from Cyclodextrin-Based Supramolecular Assemblies for Hydrothermal Processing of Microalgae: Effect of the P…
2018
Hydrothermal liquefaction (HTL) is a promising technology for the production of biocrude oil from microalgae. Although this catalyst-free technology is efficient under high-temperature and high-pressure conditions, the biocrude yield and quality can be further improved by using heterogeneous catalysts. The design of robust catalysts that preserve their performance under hydrothermal conditions will be therefore very important in the development of biorefinery technologies. In this work, we describe two different synthetic routes (i.e., impregnation and cyclodextrin-assisted one-pot colloidal approach), for the preparation in aqueous phase of six high surface area CoMo/γ-Al2O3 catalysts. Cat…