On the First Occurrence of Strings

A Fast and Accurate Global Maximum Power Point Tracking Method for Solar Strings under Partial Shading Conditions

This paper presents a model-based approach for the global maximum power point (GMPP) tracking of solar strings under partial shading conditions. In the proposed method, the GMPP voltage is estimated without any need to solve numerically the implicit and nonlinear equations of the photovoltaic (PV) string model. In contrast to the existing methods in which first the locations of all the local pe...

The Investigation of the Anti-fungal Activity of Sea Cucumber (Holothuria Leucospilota) Extracts (Body Wall, Guts and White Strings) from Chabahar Bay, Oman Sea

Compounds obtained from marine organisms have been isolated due to their anti-bacterial and antifungal activities. In this study, the antifungal activity of aqueous-methanol, methanol, chloroform and n-hexane extracts of body wall, guts and white strings of sea cucumber (Holothuria leucospilota) collected from Chabahar Bay in 100 to 2000 μg/ml concentrations is discussed. The antifunga...

Study on Linear Density Effect on the Vibration Behavior of Textile Strings Using Video Processing

مقایسه پاسخ بافتی اطراف سه نوع نخ بخیه سیلک غیرقابل جذب چند رشته ای: یک مطالعه حیوانی

Introduction: The tissue reaction to stitch strings used in the intraoral surgery that can aggravate inflammation is an important issue. This study aimed to compare the tissue reaction formed around three types of stitches, including Demesilk (Demetech corporation,USA) that is not produced inside the country, Pedsilk and Suture, which all are natural nonabsorbable, on rats. Methods: In this ex...

The Analytic Technique and Experimental Research Methods of Post-buckling about Slender Rod Strings in Wellbore

The buckling behavior of rod strings in wellbore is one of the key issues in petroleum engineering. The slender rod strings in vertical wellbore were selected as research objects. Based on the energy method, the critical load formulas of sinusoidal and helical buckling were derived for the string with the bottom of the wellbore pressure. According to the sinusoidal and helical buckling’s geomet...

The Investigation of Anti-bacterial Activity of Holothuria Leucospilota Sea Cucumber Extracts (Body Wall, Guts and White Strings) at Chabahar Bay in Oman Sea

Echinoderms are independent and quite special branch of world animals. Sea cucumbers are among the strangest members of echinoderm class regarding their structure and physiology. These fauna have been tested with regard to anti-bacterial, anti-fungal, anti-coagulants, anti-virus, cytotoxic, hemolytic and anti-HIV features. In this study, the antibacterial activity of Holothuria leucospilota...