Suggested Methods for Rock Failure Criteria: General Introduction

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...

POEMS syndrome: failure of newly suggested diagnostic criteria to anticipate the development of the syndrome.

POEMS syndrome is a unique clinical entity. Although it's a diagnosis of exclusion, it was previously described by the presence of several typical characteristics as paraproteinemia, polyneuropathy, organomegaly, endocrinopathy, and skin changes. Recently, new criteria were proposed, and the presence of two major and one minor criterion was claimed to suffice for a diagnosis. Both methods consi...

Suggested criteria for confirming pulmonary emphysema in the experimental animal.

The investigator attempting to produce pulmonary emphysema in the experimental animal faces the problem of the criteria to be used in determining whether he has truly produced emphysema in his animal model. This of course partly depends upon his interpretation of the word emphysema-i.e., whether he understands it in the broadest sense as including all conditions of increased air in the lung, or...

Rock Failure Energies and Failure Processes

Carving rock by indenting sharp objects into the surface under an impact force has been a favored method of fragmentation for millenia . However, as rock gets harder the lifetime of these sharp tools becomes short and, in a compromise hardened bits of rounder contour have become more common, particularly when driven by mechanical power. To better understand the behavior of these newer generatio...

General IntroductIon Pulmonary arterIal HyPertensIon and rIGHt Heart FaIlure