نتایج جستجو برای: epbs

تعداد نتایج: 47  

Journal: :Earth, Planets and Space 2023

Abstract Ionospheric structure is characterized by the space–time variation of electron density. However, our understanding physical processes that initiate and sustain intermediate-scale development does not relate directly to statistical measures characterize structure. Consequently, high-resolution physics-based equatorial plasma bubble simulations are essential for identifying systematic re...

2003
Brent Rooney Byron C. Calhoun

At least 49 studies have demonstrated a statistically significant increase in premature births (PB) or low birth weight (LBW) risk in women with prior induced abortions (IAs). This paper will focus on the risk of early premature births (EPBs) (< 32 weeks gestation) and extremely early premature births (XPBs) (< 28 weeks gestation). Large studies have reported a doubling of EPB risk from two pri...

Journal: :Space Weather-the International Journal of Research and Applications 2021

Ionospheric scintillations caused by equatorial plasma bubbles (EPBs) can seriously affect various high technology systems based on Global Navigation Satellite System (GNSS) signals at and low latitudes. A reliable prediction of ionospheric scintillation occurrence is critical to relieve the effect. Using long-term ground-based GNSS receiver ionosonde data collected in Brazilian longitude secto...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده معدن و ژئوفیزیک 1389

یکی از مهمترین فاکتورها در انتخاب روش حفاری مناسب، پایداری سینه کار تونل است. این مسئله بخصوص برای حفاری مکانیزه با ماشین حفاری tbm صادق است، چنانکه برای نمونه سپر فشار تعادلی زمین (epbs) و سپر دوغابی (ss) برای حفاری در شرایط ژئوتکنیکی نامناسب و هیدرولوژی در دهه-های اخیر توسعه داده شده اند. فشار نگهداری سینه کار تونل با تغییر سرعت گردش نقاله مارپیچی به عنوان تابعی از نرخ پیشروی ماشین کنترل می ش...

Journal: :Egyptian Journal of Biological Pest Control 2023

Abstract Background Insect pests cause substantial agriculture losses annually, and their regulation through chemical pesticides instigates a prolonged detrimental impact on the environment human health. The upsurge in difficulties such as pesticide residue, soil degradation pest resistance acted pacesetter for research biological control with prime focus entomopathogens. To aid knowing biocont...

Faezeh Sadat Akrami Fatemeh Rajab Dizavandi Leila Kargarfard Masaudeh Babakhanian, Masumeh Ghazanfarpour, Soraya Sayar Talat khadivzadeh,

Background: Due to the low rate of breastfeeding among working mothers and support of interventions to increase the duration of breastfeeding, this systematic review conducted to evaluate psychometric properties of instruments measured mother’s perception of Breastfeeding Support. Materials and Methods: The search was carried in English language databases including Medline (via PubMed), Scopus,...

2013
Georg Schaltenbrand

Spontaneous intracranial hypotension (SIH) is a syndrome in which a cerebrospinal fluid leak occurs within the spinal axis, and may lead to a constellation of neurological symptoms. A postural or orthostatic headache is the most common of these symptoms1. Spontaneous intracranial hypotension was first recognized by Georg Schaltenbrand in the 1930s. Many terms have been used to describe the cond...

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