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PubMed Journals Articles About "NASA Extends Aircraft Maintenance Contract" RSS

05:13 EDT 23rd April 2014 | BioPortfolio

NASA Extends Aircraft Maintenance Contract PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest NASA Extends Aircraft Maintenance Contract articles that have been published worldwide.

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Showing "NASA Extends Aircraft Maintenance Contract" PubMed Articles 1–25 of 1,800+


Some health effects of aircraft noise with special reference to shift work.

Aircraft noise is an environmental stressor. A positive relationship exists between noise and high blood pressure. Shift work is an additional hazardous working condition with negative effect on the behavior attitude of workers.


Nitrate assimilation contributes to Ralstonia solanacearum root attachment, stem colonization, and virulence.

Ralstonia solanacearum, an economically important plant pathogen, must attach, grow, and produce virulence factors to colonize plant xylem vessels and cause disease. Little is known about the bacterial metabolism that drives these processes. Nitrate is present in both tomato xylem fluid and agricultural soils, and the bacterium's gene expression profile suggests that it assimilates nitrate during pathogenesis. A nasA mutant, which lacks the gene encoding the catalytic subunit of R. solanacearum's sole assim...

Experimental evaluation of shark detection rates by aerial observers.

Aerial surveys are a recognised technique to identify the presence and abundance of marine animals. However, the capability of aerial observers to reliably sight coastal sharks has not been previously assessed, nor have differences in sighting rates between aircraft types been examined. In this study we investigated the ability of observers in fixed-wing and helicopter aircraft to sight 2.5 m artificial shark analogues placed at known depths and positions. Initial tests revealed that the shark analogues cou...

Weather features associated with aircraft icing conditions: a case study.

In the context of aviation weather hazards, the study of aircraft icing is very important because of several accidents attributed to it over recent decades. On February 1, 2012, an unusual meteorological situation caused severe icing of a C-212-200, an aircraft used during winter 2011-2012 to study winter cloud systems in the Guadarrama Mountains of the central Iberian Peninsula. Observations in this case were from a MP-3000A microwave radiometric profiler, which acquired atmospheric temperature and humidit...

In-Flight Alignment Using H ∞ Filter for Strapdown INS on Aircraft.

In-flight alignment is an effective way to improve the accuracy and speed of initial alignment for strapdown inertial navigation system (INS). During the aircraft flight, strapdown INS alignment was disturbed by lineal and angular movements of the aircraft. To deal with the disturbances in dynamic initial alignment, a novel alignment method for SINS is investigated in this paper. In this method, an initial alignment error model of SINS in the inertial frame is established. The observability of the system is...

NASA to Researchers: Sell Your Mission or Be Terminated.

Outcome evaluation of the opioid agonist maintenance treatment in Iran.

Methadone maintenance treatment and buprenorphine maintenance treatment are the two main therapeutic options considered for opioid replacement therapy. This study was conducted to examine the effectiveness of methadone maintenance treatment and buprenorphine maintenance treatment in Iran under usual clinical conditions.

A comprehensive robust adaptive controller for gust load alleviation.

The objective of this paper is the implementation and validation of an adaptive controller for aircraft gust load alleviation. The contribution of this paper is the design of a robust controller that guarantees the reduction of the gust loads, even when the nominal conditions change. Some preliminary results are presented, considering the symmetric aileron deflection as control device. The proposed approach is validated on subsonic transport aircraft for different mass and flight conditions. Moreover, if th...

Nurse employment contracts in Chinese hospitals: impact of inequitable benefit structures on nurse and patient satisfaction.

Purpose: Ongoing economic and health system reforms in China have transformed nurse employment in Chinese hospitals. Employment of 'bianzhi' nurses, a type of position with state-guaranteed lifetime employment that has been customary since 1949, is decreasing while there is an increase in the contract-based nurse employment with limited job security and reduced benefits. The consequences of inequities between the two types of nurses in terms of wages and job-related benefits are unknown. This study examined...

Update on the Evidence Regarding Maintenance Therapy.

Maintenance therapy has emerged as a novel therapeutic paradigm for advanced non-small-cell lung cancer (NSCLC). Maintenance therapy that aims to sustain a clinically favorable state after first-line chemotherapy has two strategies. Switch maintenance therapy entails switching to a new and non-cross-resistant agent in an alternating or sequential manner, on completion of first-line chemotherapy. Continuous maintenance therapy keeps ongoing administration of a component of the current regimen after four to s...

Evacuation pattern analysis of a survivable commercial aircraft crash.

The generation contract, pension schemes, birth control and economic growth: A European model for the third world?

The paper presents an analysis of the relationship between the generation contract, pension schemes, fertility decline and the process of economic growth. It is shown that there is a close connection between the reproductive behavior of a population and social security in old age i.e. the introduction and effects of retirement insurances. The proof of this assumption is given by a historical analysis of the developed and a systematic analysis of the developing countries. The paper postulates that the intent...

Buprenorphine maintenance versus placebo or methadone maintenance for opioid dependence.

Buprenorphine maintenance treatment has been evaluated in randomised controlled trials against placebo medication, and separately as an alternative to methadone for management of opioid dependence.

Reproductive Tissue and Contract.

Maintenance strategies in stage IV non-small-cell lung cancer (NSCLC): in which patients, with which drugs?

Four to six cycles of platinum-based chemotherapy are currently recommended for the first-line treatment of advanced non-small-cell lung cancer (NSCLC). Several studies have assessed the benefit of maintenance therapy following platinum-based first-line therapy, to improve disease control, and thus, progression-free and overall survival with minimal toxicity and maintenance or improvement of quality of life of patients. We review here clinical trials evaluating continuation maintenance therapy or switch mai...

Giant invasive spinal schwannoma in children: a case report and review of the literature.

Giant invasive spinal schwannoma is defined as a tumor that extends over two or more vertebral levels, erodes vertebral bodies, and extends into the extraspinal space disrupting myofascial planes. Because of its rarity, there have been few published reports describing clinical features and surgical outcomes, especially in the pediatric patient population.

Papillomavirus E6 PDZ Interactions Can Be Replaced by Repression of p53 to promote Episomal HPV Genome Maintenance.

Cancer-associated HPVs express E6 oncoproteins that target the degradation of p53 and have a carboxy-terminal PDZ ligand that is required for stable episomal maintenance of the HPV genome. We find that the E6 PDZ ligand can be deleted and the HPV genome stably maintained if cellular p53 is inactivated. This indicates that the E6-PDZ interaction promotes HPV genome maintenance at least in part by neutralization of an activity that can arise from residual undegraded p53.

Physician responsibility when a surrogate mother breaks her contract.


Energy Requirements For Maintenance And Growth In 3 To 4 Year Old Children Might Be Overestimated By Existing Equations.

To give appropriate dietary advice to preschool children, an estimation of their energy requirements for both maintenance and activity is needed. We compared energy requirements for maintenance, measured by indirect calorimetry against existing equations predicting these requirements in 3-4 year old children.


The Optimal Licensing Contract in a Differentiated Stackelberg Model.

This paper extends the work of Wang (2002) by considering a differentiated Stackelberg model, when the leader firm is an inside innovator and licenses its new technology by three options, that is, fixed-fee licensing, royalty licensing, and two-part tariff licensing. The main contributions and conclusions of this paper are threefold. First of all, this paper derives a very different result from Wang (2002). We show that, with a nondrastic innovation, royalty licensing is always better than fixed-fee licensi...



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