Transient Stability Margin Assessment of a Power System Using Multi-Layered Perceptron Neural Network

Transient Stability Margin Assessment of a Power System Using Multi-Layered Perceptron Neural Network

Transient Stability Margin Assessment of a Power System Using Multi-Layered Perceptron Neural Network

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تعداد صفحات :9
سال انتشار :1395
چکیده
Online transient stability assessment of a power system is not yetfeasible due to the intensive computation involved. Artificial neuralnetworks have been proposed as one of the approaches to this problembecause of its ability to quickly map nonlinear relationships between theinput data and the output. This paper presents a methodology forestimating the normalized transient stability margin by using themultilayered perceptron neural network. The complex relationshipbetween the input variables and output variables is established by usingthe neural networks. The nonlinear mapping relation between thenormalized transient stability margin and the operating conditions of thepower system is established by…

A comparison of three observational techniques for using postural analysis in a cable factory

A comparison of three observational techniques for using postural analysis in a cable factory

A comparison of three observational techniques for using postural analysis in a cable factory

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تعداد صفحات :10
سال انتشار :1394
چکیده
Work-related musculoskeletal disorders (WMSD) which are related with repetitive and demanding working conditions continue to represent one of the biggest complications all over the world. Assessment of exposure levels to WMSD risk factors can be an appropriate base for planning and implementing interventional ergonomics programs in the workplace. This study is focused on posture analysis of a cable manufacturing company workers. The study was conducted on 03 workers engaged in different process of manufacturing. The different activities of the workers were recorded by video and still photography, and these images were used for analysis. Posture analysis tools RULA, REBA and QEC were used. The results…

Controlling Epilepsy With a Brain Implant

Controlling Epilepsy With a Brain Implant

Controlling Epilepsy With a Brain Implant

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تعداد صفحات :8
سال انتشار : 1394
چکیده
In this essay you are going to read about a smarter technology reduces seizures in epileptic patients by identifying dangerous patterns of brain activity. Also the neurostimulator is a small, battery powered device surgically implanted in the skull. Physicians trained on use of the RNS System program the neurostimulator to continuously monitor brain electrical activity, and the neurostimulator delivers brief pulses of stimulation when it detects activity that could lead to a seizure. The stimulation can help to prevent the seizure before it happens. The leads are wires that connect the neurostimulator directly to the area of the brain where seizures start. The neurostimulator uses the leads to sense…

Effect of various potassium nitrate levels on germination and morphological characteristics of Mentha longifolia

Effect of various potassium nitrate levels on germination and morphological characteristics of Mentha longifolia

Effect of various potassium nitrate levels on germination and morphological characteristics of Mentha longifolia

نوع فایل:PDF
تعداد صفحات :12
سال انتشار : 1394
چکیده
Nitrogen is one of the most important plant macronutrients. Nitrate accumulation in the plants via excessive use of nitrate fertilizers, sewage wastewater and etc., can affect plant growth and development and so could be a threat for human health, animals and the ecosystem. Since the Mentha longifolia is naturally growing in the margin of contaminated water, could be a candidate for nitrate phytoremediation. As the first step to evaluate phytoremediation potential of this species, effect of potassium nitrate (concentration of zero, 1, 5, 11, 15 mM) on its seed germination characteristics was studied using a completely randomized design. Then, nitrate effects on some morphological characteristics of M….

Embryonic therapy: Can we hypothesize new strategies for wound healing

Embryonic therapy: Can we hypothesize new strategies for wound healing

Embryonic therapy: Can we hypothesize new strategies for wound healing

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تعداد صفحات :5
سال انتشار : 1394
چکیده
Hair has various physiological functions, including protection from the elements and dispersion of sweat-gland products. It it also psychosocial important, and patients with hair loss (alopecia) often deeply suffer. Demand for medications that alter hair growth and appearance has led to a multibillion-dollar industry and thus far few natural effective products are available. For the purpose of ascertaining natural products which possess hair growing activity, we looked over onto ethanolic and aqueous extracts of E. cottonii. Hair follicles have greatly been regarded as intriguing but largely separate and non-essential adjuncts to skin. Hair follicle epithelial stem cells and their contribution to skin…

Health-related variables and its health promoting Lifestyle predictors in cardiovascular disease patients

Health-related variables and its health promoting Lifestyle predictors in cardiovascular disease patients

Health-related variables and its health promoting Lifestyle predictors in cardiovascular disease patients

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تعداد صفحات :8
سال انتشار :1394
چکیده
The principal cause for death in the world is cardiovascular disease which leads to the death of 71 million people every year. Poor lifestyle is a contributing element in this regard. The present study aims at assessing the effects of health-related variables and lifestyle variables on the results of exercise in patience with cardiovascular disease. This is a cross sectional descriptive study. Patients were divided randomly into two groups based on the results of exercise stress test: positive exercise test (771 patients) and negative exercise test (771 patients). Patients’ lifestyles were assessed with a standardized questionnaire; Health promotion lifestyle profile- II .SPSS-22 software and…

In silico potential vaccine against hps06257 in Haemophilus parasuis serovar 5

In silico potential vaccine against hps06257 in Haemophilus parasuis serovar 5

In silico potential vaccine against hps06257 in Haemophilus parasuis serovar 5

نوع فایل :PDF
تعداد صفحات :17
سال انتشار :1395
چکیده
Haemophilus parasuis is a small, pleomorphic, NAD-dependent member of the family Pasteurellaceae. This bacterium is the etiological agent of Glässer’s disease in swine, which is characterized by polyserositis and arthritis. Once a sporadic disease, it has increased in prevalence and severity in recent years with the adoption of new production technologies which has led to pigs being susceptible to this infection. However, a lack of protective cross-immunity against some strains and partial cross-protection among serotypes has been reported [4,5], pointing to the difficulty in identifying protective immunogens for a universal vaccine. Initial studies have already shown the importance of…

Investigation of tropane alkaloid production and expression of pmt gene, in Atropa belladonna cell suspension culture treated with Piriformospora indi

Investigation of tropane alkaloid production and expression of pmt gene, in Atropa belladonna cell suspension culture treated with Piriformospora indi

Investigation of tropane alkaloid production and expression of pmt gene, in Atropa belladonna cell suspension culture treated with Piriformospora indi

نوع فایل:PDF
تعداد صفحات :9
سال انتشار : 1395
چکیده
Hyoscyamine and scopolamine are tropane alkaloids employed in medicine as anticholinergic agents and extracted from plants that belong to several species of Solanaceae because their chemical synthesis is complicated and expensive obtaining these compounds through cell suspension culture is a promising approach. The effect of Piriformospora indica, a plant growth-promoting root endophyte fungus, on tropane alkaloids production and expression of one rate-limiting enzyme gene, Putrescine N-methyltransferase (pmt) were studied in A. belladonna cell suspension culture. Based on our results the highest level of total alkaloids in MS + 1 mg.L-1 NAA (naphthalene acetic acid) + 1 mg.L-1 BA(6-Benzylaminopurin)…

Identification and validation of Outer membrane protein (OMP) P6 3D structure and its topology in Haemophilus influenzae

Identification and validation of Outer membrane protein (OMP) P6 3D structure and its topology in Haemophilus influenzae

Identification and validation of Outer membrane protein (OMP) P6 3D structure and its topology in Haemophilus influenzae

نوع فایل :PDF
تعداد صفحات :18
سال انتشار :1395
چکیده
Haemophilus influenzae is a common human respiratory tract pathogen, causing disease in both children and adults. The bacterium is an important cause of otitis media, the most common reason for children to receive antibiotic therapy. Outer membrane protein P6 is a member of the class of outer membrane proteins known as peptidoglycan-associated lipoproteins. First discovered in the mid-1980s, P6 is a promising vaccine antigen that has been the subject of extensive study. P6 has several features suggesting that the protein may be an effective vaccine antigen. The gene that encodes P6 is present and the protein is expressed in all strains of H. influenzae examined thus far. The nucleotide sequence…

Cloning and expression of human bone morphogenetic protein-2 gene in Leishmania tarentolae

Cloning and expression of human bone morphogenetic protein-2 gene in Leishmania tarentolae

Cloning and expression of human bone morphogenetic protein-2 gene in Leishmania tarentolae

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تعداد صفحات:
سال انتشار:1395
چکیدهSeveral expression hosts have been employed for the production of bone morphogenetic protein2 (BMP- 2), inducing de novo bone formation and is widely used in clinical applications. However,every expression system has its merits and demerits. For example, although Escherichia coli issimple and robust, but inept to make disulfide bond; hence, heterologous proteins are produced inthe form of inclusion bodies, entailing in vitro refolding strategies. On the other hand, yeast, whichis a lower eukaryote, is able to perform glycosylation of the recombinant proteins. However, itsglycosylation pattern is different from human beings. Ultimately, Leishmania tarentolae, a parasiteprotozoan of the lizard, unifying both…