The Cummins advanced turbocompound diesel engine evaluation

An advanced turbocompound diesel engine program was initiated to improve the tank mileage of the turbocompound engine by 5% over the vehicle test engines. Engine improvements could be realized by increasing the available energy of the exhaust gas at the turbine inlet, incorporating gas turbine techniques into improving the turbomachinery efficiencies, and through refined engine system optimization. The individual and cumulative performance gains achieved with the advanced turbocompound engine improvements are presented

Odors from livestock operations : causes and possible cures (1999)

Complaints about livestock odors have increased as growth in the number of large livestock operations, especially swine operations, increases the concentration of animals in small geographical areas. Many of these large operations store manure for long periods under anaerobic conditions in open manure storages or lagoons. Migration of urban residents seeking the perceived benefits of country living, such as quiet solitude and clean air, has increased the population density surrounding many livestock operations.New 9/99/3M

Selecting and Working with an Engineering Consultant to Design Animal Waste Management Facilities (2009)

Registered professional engineers may be employed by governmental agencies or universities, privately employed by companies or employed as independent consulting engineers. Increased Letter of Approval requirements and decreasing available manpower of University Extension and Soil Conservation Service engineers has resulted in a shift of design responsibility for animal waste facilities to the private sector

Brucellosis

The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

Brucellosis: Buyers and sellers guide

The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at [email protected] or by phone at 405-744-6311

Damping in high-frequency metallic nanomechanical resonators

We have studied damping in polycrystalline Al nanomechanical resonators by measuring the temperature dependence of their resonance frequency and quality factor over a temperature range of 0.1 - 4 K. Two regimes are clearly distinguished with a crossover temperature of 1 K. Below 1 K we observe a logarithmic temperature dependence of the frequency and linear dependence of damping that cannot be explained by the existing standard models. We attribute these phenomena to the effect of the two-level systems characterized by the unexpectedly long (at least two orders of magnitude longer) relaxation times and discuss possible microscopic models for such systems. We conclude that the dynamics of the two-level systems is dominated by their interaction with one-dimensional phonon modes of the resonators.Comment: 5 pages, 3 figure

A study of turbofan-engine compressor noise suppression techniques

Nacelle design for turbofan engine compressor noise suppression on Douglas DC-8 aircraf

Lock-in detection for pulsed electrically detected magnetic resonance

We show that in pulsed electrically detected magnetic resonance (pEDMR) signal modulation in combination with a lock-in detection scheme can reduce the low-frequency noise level by one order of magnitude and in addition removes the microwave-induced non-resonant background. This is exemplarily demonstrated for spin-echo measurements in phosphorus-doped Silicon. The modulation of the signal is achieved by cycling the phase of the projection pulse used in pEDMR for the read-out of the spin state.Comment: 4 pages, 2 figure

QUALIDADE DE VIDA DE DEFICIENTES VISUAIS

Design of the study: Analytic/Exploratory survey.Purpose: To assess the quality of life of visually impaired people who attend the rehabilitation program at a universitary service.Methods : This study was conducted in October and November 2004. Were interviewed sixteen visually impaired teenagers and adults who attended the rehabilitation program: blind (n=10) and low vision (n=6). In order to assess their quality of life, we used the Portuguese version of the World Health Organization Quality of Life (WHOQOL – Bref). SPSS was used and the scores were transformed from 4 to 20. The medians of the scores in each domain were compared and considered significant when p= 0,05 (5%). The Research Ethics Committee approved this investigation. Results : The population of this research consisted of 50% men, aged from 18 to 61 years, with an average of 38 years of age. The evaluation of the different items of the WHOQOL –Bref did not indicate a statistically significant difference between low vision and blind patients. The study pointed out a better quality of life in the psychological and physical aspects (15,66 and 15,14, respectively). In the general questions the global score was 14,00. Conclusion: The results reported a good quality of life perception in the physical and psychological domains and a less perception in the social relationship and environment.Estudo exploratório analítico. Objetivo: Avaliar a qualidade de vida de deficientes visuais em Programa de Reabilitação de um serviço universitário. Métodos: O estudo foi realizado nos meses de outubro e novembro de 2004, com 16 deficientes visuais adolescentes e adultos acompanhados em programa de reabilitação, dos quais 10 tinham baixa visão e 6 eram cegos. Para a avaliação da qualidade de vida foi utilizada a versão em português do World Health Organization Quality of Life (WHOQOL– Bref). Na análise estatística utilizou-se o programa SPSS com escores transformados de quatro a 20. As medianas dos escores de cada domínio foram comparadas e consideradas significativas se “p” fosse menor ou igual a 5%. O estudo foi aprovado pelo Comitê de Ética em Pesquisa. Resultados : Dos 16 deficientes estudados 50% eram do sexo masculino, idade variando de 18 a 61 anos, média de 38 anos. A avaliação dos diferentes itens do WHOQOL-Bref não mostrou diferença estatisticamente significante entre os pacientes com baixa visão e os cegos. O estudo revelou melhor qualidade de vida nos domínios psicológico (15,66), e físico (15,14). Nas questões gerais o escore global foi 14,00. Conclusão: Os resultados apontam para uma boa percepção de qualidade de vida nos aspectos físicos e psicológicos e menor percepção nos domínios das relações sociais e do meio ambiente, provavelmente decorrentes da situação sócio-estruturais e culturais dos pacientes