Results 21 to 30 of about 41,805 (255)
Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya) [PDF]
, 2018 Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) using field data obtained from El-
Abdellah, W, Boghdady, G, Sayed, M
core +1 more source
Customized Design and Application of High ROP Bit for Deep Shale Gas
Shiyou jixieAs the development scale of shale gas expands， improving the rate of penetration （ROP） of deep shale gas has become the key to improving development efficiency， and designing more targeted bit based on formation characteristics is an effective means to ...
Zhu Xiaohua +6 more
doaj +3 more sources
Retinopathy of prematurity: A major review and situation analysis in Egypt
Journal of Medicine in Scientific Research, 2018 Retinopathy of prematurity (ROP) remains a major cause of childhood blindness in developing countries. As childhood and neonatal mortality in Egypt has shown tremendous improvement over the past two decades, it is expected to encounter an increasing ...
Ihab S Othman
doaj +1 more source
Evaluation of Risk Factors for Retinopathy of Prematurity in Preterm Neonates [PDF]
Iranian Journal of Neonatology, 2019 Background: The most common cause of preventable blindness in children is retinopathy of prematurity (ROP). The most important risk factors for this disease are preterm delivery and low birth weight (LBW).
Maryam Khosnoud Shariati +4 more
doaj +1 more source
Social effects of economic crisis: risk of exclusion. An overview of the European context [PDF]
, 2019 Sustainability is a complex concept. It only can be achieved from a global perspective, where social, economic and environmental issues are all key factors for achieving the goal. This paper is focused on the importance of social sustainability and, as
Novo Corti, Isabel +3 more
core +3 more sources
Analysis of the etiologies, treatments and prognoses in children and adolescent vitreous hemorrhage [PDF]
International Journal of Ophthalmology, 2021 AIM: To determine the etiologies, treatment modalities and visual outcomes of vitreous hemorrhage (VH; range from birth to 18y). METHODS: A total of 262 eyes from 210 patients between January 2010 and September 2016 were included.
Zheng-Wei Liu +4 more
doaj +1 more source
Angewandte Chemie, EarlyView.Chiral cyclopropenimine–thiourea organocatalysts enabled both high reactivity and precise stereocontrol in the ring‐opening polymerization of rac‐lactide. The bifunctional system exhibited a TOF up to 1,710 h−1 with Pm = 0.90 at 25°C, and achieved Pm = 0.99 at −78°C while maintaining a TOF of 16.3 h−1.
Sumin Lee +8 more
wiley +2 more sources
Российский офтальмологический журнал, 2022 Despite the improvement of algorithms of preterm infants’ management, methods for predicting, diagnosing and treating ROP remains a vital issue. Purpose: to improve the diagnostics of retinopathy of prematurity based on the assessment of vascular ...
O. A. Pererva, M. A. Kovalevskaya
doaj +1 more source
Implementation of community cohesion policy in Italy and its role in elimination of regional disparities [PDF]
, 2010 The objective of this paper is to present the contribution of Community regional policy funds to achieving socio-economic cohesion of Italian regions eligible under Objective 1, as well as to discuss future development barriers and opportunities of these
Lewandowski, Krzysztof
core +2 more sources
Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges
Angewandte Chemie, EarlyView.This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo +4 more
wiley +2 more sources