Results 81 to 90 of about 7,065,211 (348)

GO/C2S Nanocomposite as an Environmentally-Friendly Material for sustainable Development of Cement Structure [PDF]

open access: yesJournal of Water and Environmental Nanotechnology, 2018
In the present work, Graphene Oxide (GO) nano particles with 0.1, 0.2, 0.4 and 0.8 weight percentages (wt.% ), synthesized by Hummer method entered into the Di-Calcium Silicate (C2S) matrix (synthesized with using Pechini method and their nano structural
Ali Bahari, Hussein Salmani
doaj   +1 more source

Prolonged Corrected QT Interval as an Early Electrocardiographic Marker of Cyclophosphamide‐Induced Cardiotoxicity in Pediatric Hematology and Oncology Patients

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cyclophosphamide (CY) is associated with potentially fatal cardiotoxicity, yet no electrocardiographic indices have been established for early detection of CY‐induced cardiomyopathy. This study aimed to determine whether corrected QT interval (QTc) prolongation can predict early onset of CY‐related cardiac dysfunction in pediatric ...
Junpei Kawamura   +5 more
wiley   +1 more source

Wide Acoustic Bandgap Solid Disk-Shaped Phononic Crystal Anchoring Boundaries for Enhancing Quality Factor in AlN-on-Si MEMS Resonators

open access: yesMicromachines, 2018
This paper demonstrates the four fold enhancement in quality factor (Q) of a very high frequency (VHF) band piezoelectric Aluminum Nitride (AlN) on Silicon (Si) Lamb mode resonator by applying a unique wide acoustic bandgap (ABG) phononic crystal (PnC ...
Muhammad Wajih Ullah Siddiqi   +1 more
doaj   +1 more source

Environmental factors and semen quality

open access: yesInternational Journal of Occupational Medicine and Environmental Health, 2009
An increasing number of reports suggest that chemical and physical agents in the environment, introduced and spread by human activity, may affect male fertility in humans. This article aims at evaluating the impact of environmental exposures (pesticides, phthalates, PCBs, air pollution, trihalomethanes (THMs), mobile phones) on semen quality, by ...
Jurewicz, Joanna   +3 more
openaire   +3 more sources

The quality factor in patent systems [PDF]

open access: yes
In this paper, Bruegel senior Fellow Bruno van Pottelsberghe develops a methodology to compare the quality of examination services in different patent offices.
Bruno van Pottelsberghe
core   +1 more source

A Systematic Review of Evidence on the Clinical Effectiveness of Surveillance Imaging in Children With Medulloblastoma and Ependymoma

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Surveillance imaging aims to detect tumour relapse before symptoms develop, but it's unclear whether earlier detection of relapse leads to better outcomes in children and young people (CYP) with medulloblastoma and ependymoma. This systematic review aims to identify relevant literature to determine the efficacy of surveillance magnetic ...
Lucy Shepherd   +3 more
wiley   +1 more source

Probability Distribution of the Quality Factor of a Mode-Stirred Reverberation Chamber

open access: yes, 2012
We derive a probability distribution, confidence intervals and statistics of the quality (Q) factor of an arbitrarily shaped mode-stirred reverberation chamber, based on ensemble distributions of the idealized random cavity field with assumed perfect ...
Arnaut, L. R., Gradoni, G.
core   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez   +13 more
wiley   +1 more source

Investigation on the Quality Factor Limit of the (111) Silicon Based Disk Resonator

open access: yesMicromachines, 2018
Quality factor is one of the most important parameters for a MEMS resonator. Most MEMS resonators are dominated by thermoelastic dissipation (TED). This paper demonstrates that the TED in a disk resonator that is made of (111) single-crystal silicon is ...
Xin Zhou   +10 more
doaj   +1 more source

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