We examine the metallicity distribution function (MDF) and fraction of carbon-enhanced metal-poor (CEMP) stars in a sample that includes 86 stars with [Fe/H] ≤ −3.0, based on high-resolution, high-S/N spectroscopy, of which some 32 objects lie below [Fe/H] = −3.5. After accounting for the completeness function, the “corrected” MDF does not exhibit the sudden drop at [Fe/H] = −3.6 that was found...

In this study wheat straw was taken from Ankara province. In order to produce dry process MDF, urea formaldehyde resin was used at the ratio of 8 %, 10 % and 12 %, 1 % ammonium chloride was used as hardening agent on the basis of dry fiber weight. On the other hand, 5, 6 and 7 min. pressing times were applied. Alcohol benzene, cold water, hot water and 1 % NaOH solubility of wheat straw were 5....

This report describes the development of a language based on VHDL intended to simplify the use of IDDQ instrumentation in production testing. This language called 'Monitor Description Fonnat' or MDF, is part of the development by QTAG (Quality Test Action Group) of an infrastructure for quiescent current testing. The MDF can be used with commercial supported QTAG monitors (lDDQ measurement equi...

در این مقاله رفتار سوپرپلاستیک آلیاژ sn-1%bi در شرایط mdf شده، توسط آزمون پانچ برشی در دمای اتاق (t>0.6tm) موردبررسی قرار گرفت. نتایج آزمون پانچ برشی مقدار ضریب حساسیت به نرخ کرنش (m)  را برای نمونه­های 2، 4، 6 و 8 پاس mdf شده به ترتیب 11/0، 23/0، 35/0 و 53/0 گزارش کرد. این مقادیر نیز نشان می­دهد که نمونه­های 6 و 8 پاس mdf شده رفتار سوپرپلاستیک را تجربه می­کنند. تصاویر میکروسکوپ نوری نشان دادند...

We propose a new low complexity, low delay, and fast converging frequency-domain adaptive algorithm for network echo cancellation in VoIP exploiting MMax and sparse partial (SP) tap-selection criteria in the frequency domain. We incorporate these tap-selection techniques into the multidelay filtering (MDF) algorithm in order to mitigate the delay inherent in frequency-domain algorithms. We illu...

Kinetochores use the spindle checkpoint to delay anaphase onset until all chromosomes have formed bipolar attachments to spindle microtubules. Here, we use controlled monopolar spindle formation to systematically define the requirements for spindle checkpoint signaling in the Caenorhabditis elegans embryo. The results, when interpreted in light of kinetochore assembly epistasis analysis, indica...

The aim of the present paper is to present the methodology of the molecular descriptors family (MDF) as an integrative tool in molecular modeling and its abilities as a multivariate QSAR/QSPR modeling tool. An algorithm for extracting useful information from the topological and geometrical representation of chemical compounds was developed and integrated to calculate MDF members. The MDF method...

Medium density fiberboard (MDF) is an engineered wood product formed by breaking down selected lignin-cellulosic material residuals into fibers, combining it with wax and a resin binder, and then forming panels by applying high temperature and pressure. Because the raw material in the industrial process is ever-changing, the panel industry requires methods for monitoring the composition of thei...

We deduce the globular cluster formation history of the nearby elliptical NGC 5128 by using a phenomenological chemical enrichment model to reproduce its observed metallicity distribution function (MDF). We derive the observed MDF using recently obtained U and B photometry of the NGC 5128 GC system, with (U − B) used as the metallicity indicator. We test whether the observed MDF can be reproduc...