نتایج جستجو برای: minute grid

تعداد نتایج: 134357  

In the conventional structure of the wind turbines along with the doubly-fed induction generator (DFIG), the stator is directly connected to the power grid. Therefore, voltage changes in the grid result in severe transient conditions in the stator and rotor. In cases where the changes are severe, the generator will be disconnected from the grid and consequently the grid stability will be attenu...

Journal: :E3S web of conferences 2022

The forecasting and analysis for the power system load profoundly affect security of electricity production daily life. Based on data 15- minute interval in a regional grid China, this paper forecasts 15 - next 10 days, maximum values 3 months, minimum months each industry region basis ARIMA model LSTM respectively, then compares effects two models. conclusions show that (1) has higher accuracy...

A Ehsani J Rezaeepazhand,

The present paper investigates the advantages of a new class of composite grid structures over conventional grids. Thus far, a known grid structure such as orthogrid or isogrid has been used as an orthotropic layer with at most in-plane anisotropy. The present laminated grid is composed of various numbers of thin composite grid layers. The stiffness of the structure can be adjusted by choosing ...

A new single-phase transformerless grid-connected PV inverter is presented in this paper. Investigations in transformerless grid-connected PV inverters indicate the existence of the leakage current is directly related to the variable common-mode voltage (CMV), which is presented in detail. On the other hand, in recent years it has become mandatory for the transformerless grid-connected PV inver...

Journal: :journal of cardio-thoracic medicine 0
zahra mirfeizi rheumatologist, rheumatic diseases research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran leila ghofraniha pulmonologist, lung diseases research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran seyyedeh fatemeh seyyedi khabbaz internist, rheumatic diseases research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran

introduction: systemic lupus erythematosus (sle) is an autoimmune disease affect nearly every organ system. pulmonary involvement, which is a common manifestation of sle, can remain undiagnosed if asymptomatic. this study aimed to evaluate the efficiency of spirometric findings in early detection of silent pulmonary involvement and examine its correlation with the six minute walk test in sle pa...

Journal: :The Ulster Medical Journal 1938
Robert Marshall

to carve it into neat joints and steaks. But as men multiplied upon the earth, and tribes were formed, warfare arose,, and men began to seek out the most vital parts of the humani body. Offerings andi sacrifices were made to propitiate the gods before these wars; and whenl cannibalism was evolved, human flesh, the scarcest andC Imlost valued form of food, was the natural offering at the altar, ...

Journal: :BMJ 2001
B C Delaney

x Is this really dyspepsia? Ask about epigastric pain; heartburn and acid regurgitation; attitudes towards meals; lying flat; and response to antacids. Consider biliary or cardiac pain. Predominant bloating may indicate aerophagia or the irritable bowel syndrome. x Be alert to “alarm symptoms” (weight loss, anaemia, vomiting, jaundice, and epigastric mass); patients aged 55 and over with recent...

Journal: :The British journal of general practice : the journal of the Royal College of General Practitioners 2015
Penny Flaxman

Journal: :The Veterinary record 2015
Pete Matthews

Pete Matthews works in mixed practice at Galedin Veterinary in the Scottish Borders. He has been a member of the Tweed Valley Mountain Rescue Team for eight years and last year took on the role of team leader for a three-year term.

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