Linear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent suppression capability. When LADRC is applied a single-phase inverter for tracking sinusoidal reference signal, there an inherent inaccuracy problem. The steady-state error can be removed with the synchronous frame proportional-integral (SRFPI) control, which generates two orthogo...

The present paper focuses on the efficiency enhancement of energy-intensive natural gas (NG) sweetening process in context upstream production. A bi-level heat integration scheme is proposed including direct recycling available high-temperature waste and harnessing excess low-temperature an optimized organic Rankine cycle (ORC) for power energy performance whole model was studied under a range ...

background: evaluation of anti-mullerian hormone (amh) cut-off levels in assisted reproductive technology (art) as predictive factor for individualization of stimulation protocols and to avoid ovarian hyperstimulation syndrome (ohss). materials and methods: in a retrospective study, 177 infertile patients were assessed for amh in serum and follicular fluid (ff) on the day of follicular puncture...

cumin (cuminum cyminum) is an annual suitable for the dry and semi-dry areas of iran. recently, farmers have chosen to plant cumin because it requires less water and growth time. however, at harvest time, the resistance of cumin seed to shatter is low and, if careful attention is not paid to this fact, a major portion of the crop can be lost. when the connection force of the seed decreases, see...

wind erosion is a major environmental issue affecting land resources and socio-economic settings in iran. this paper outlines a study undertaken to provide a new tool to manage wind erosion from physical and economic perspectives. the southern part of the varamin plain in south of tehran is used as a case study. the focus of this study is on exploring the economic and physical impacts of 16 veg...

The final quality and cost of a manufactured product are determined to a large extent by the engineering design of the product and its production process through activities of off-line quality control methods, namely, System Design, Parameter Design and Tolerance Design. However, in the context of most non-industrialized countries, the off-line quality activities of product design and system de...