742 research outputs found
Aerodynamic Parameter Estimation From Flight Data Of The Unconventional Aircraft
This Document Gives Complete Results Of Parameter Estimation From Flight Data Of The Unconventional Aircraft. It Also Includes The Results Of Handling Quality Evaluation Based On Linear Estimated Models From Flight Data And Simulation Model Validation
Simulation Modeling Of A Transport Aircraft Using Flight Test Data
The Mathematical Models Using Flight Test Data With Respect To A Transport. Aircraft For The Offline Simulation Are Described In This Document. For The Purpose Of Simulation Validation Process, Representative Flight Data Sets Are Selected From A Data Bank Which Was Created Previously Using Data From Actual Flight Maneuvers
Visualising Electronic Data Interchanging (EDI) and Virtual Information System (VIS) for Manipal Institutions
Paper discuses a case study on a virtual information system for a
group of institutions in Manipal. A demonstration model, which
has been developed, is discussed
EUROPEAN UNION ENLARGEMENT: WHAT ARE THE AGRICULTURAL TRADE MODELS MISSING?
This paper quantifies the potential impact of European Union enlargement and the consequences of ignoring the non-agricultural component of this integration. We find that agriculture-focused studies offer sound estimates of agriculture-specific production and trade changes, but the estimates of trade volume changes, and welfare gains are far too low.International Relations/Trade,
Computational Analysis of Microsatellite Repeats in Chloroplast Genomes
Chloroplasts are the food producers of the cell These organelles are found only in plant cells and algae Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells Microsatellites are a special class of DNA repeats that are found to be helpful to understand evolution diseases and are widely used in various applications including DNA Fingerprinting Paternity Studies Linkage Analysis etc These repeats are ubiquitously present in all genomes including chloroplasts and very little is known about their presence in organelle genomes In this study we have analyzed more than 370 chloroplast genomes and a brief report on the distribution and frequency of these repeats in chloroplast genomes has been presente
Sleep and Stroke
Circadian variations in conjunction with sleep-related heart rhythm changes and sleepdisordered breathing (SDB) are contributing risk factors for stroke. Strong scientificevidence now exists indicating that SDB contributes to systemic hypertension, aprominent risk factor for stroke, and compelling circumstantial evidence is presentsuggesting that SDB raises the risk for development of stroke through other circulatorymechanisms as well. Preliminary evidence indicates that post-stroke patients have ahigher prevalence of SDB, which is likely to compromise their rehabilitation outcomes.Since SDB is modifiable with the application of CPAP and other treatment modalities,there is practical value in investigating patients at risk of stroke or post stroke forpresence of SDB. Successful application of CPAP or BiPAP therapy may improve theoutcome in both instances.Key words : Sleep, Stroke, SDB, CPA
Vitamin B 12 Levels in Patients with Type 2 Diabetes Mellitus on Metformin
Vitamin B12 is required for proper hematopoeisis, cardiovascular and neurocognitive function. Vitamin B12 deficiency is highly prevalent among patients with type 2 diabetes mellitus (T2DM) on metformin therapy. Aim: This study was carried out to evaluate the serum levels of vitamin B12 in patients with T2DM on metformin therapy. Material and methods: Hundred patients with T2DM within the age group of 45-80 years were recruited into this cross-sectional study. All the patients were on metformin therapy for a minimum of 5 years. Results: Vitamin B12 deficiency and borderline deficiency observed were 10.6% and 29% and 60.4% did not have vitamin B12 deficiency. B12 levels were lower in patients with more than 10 years of duration of diabetes and was statistically significant with a p value of 0.004. The average B12 levels in patients on metformin dose of >1,000 mg was 349 pg/dL and in patients with metformin dose above 1,000 mg was 215 pg/dL. The difference between the two groups was statistically significant with a p value of <0.002. Conclusion: There is a high prevalence of B 12 deficiency among diabetic patients. It is important to screen for vitamin B12 deficiency before initiating metformin and later annually
Gene Expression Analysis Methods on Microarray Data a A Review
In recent years a new type of experiments are changing the way that biologists and other specialists analyze many problems. These are called high throughput experiments and the main difference with those that were performed some years ago is mainly in the quantity of the data obtained from them. Thanks to the technology known generically as microarrays, it is possible to study nowadays in a single experiment the behavior of all the genes of an organism under different conditions. The data generated by these experiments may consist from thousands to millions of variables and they pose many challenges to the scientists who have to analyze them. Many of these are of statistical nature and will be the center of this review. There are many types of microarrays which have been developed to answer different biological questions and some of them will be explained later. For the sake of simplicity we start with the most well known ones: expression microarrays
Causes of Hypersomnia – Narcolepsy
The causes of hypersomnia or excessive daytime sleepiness (EDS) besides volitionalsleep deprivation and obstructive sleep apnea are principally due to primary centralnervous system abnormalities. Most common amongst these is Narcolepsy, a primarydisorder of the neural control of wakefulness and sleep. The recent discovery ofhypocretin/orexin deficiency as the main cause of narcolepsy will lead to importanttherapeutic advances for patients with narcolepsy and further to understanding of thecontrol of sleep and wakefulness in general. Importantly, the excessive daytimesleepiness is not due to psychiatric conditions, but rather is always due to sleepdeprivation or an underlying diagnosable and treatable sleep disorder.Key words : EDS, Sleep, Narcoleps
Kinetic theory of electromagnetic ion waves in relativistic plasmas
A kinetic theory for electromagnetic ion waves in a cold relativistic plasma
is derived. The kinetic equation for the broadband electromagnetic ion waves is
coupled to the slow density response via an acoustic equation driven by
ponderomotive force like term linear in the electromagnetic field amplitude.
The modulational instability growth rate is derived for an arbitrary spectrum
of waves. The monochromatic and random phase cases are studied.Comment: 7 pages, 4 figures, to appear in Physics of Plasma
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