نتایج جستجو برای: ni@pt nanoparticles

تعداد نتایج: 107445  

Journal: :Dalton transactions 2015
Lan Wen Xiaoqiong Du Jun Su Wei Luo Ping Cai Gongzhen Cheng

Well-dispersed bimetallic Ni-Pt nanoparticles (NPs) with different compositions have been successfully grown on the MIL-96 by a simple liquid impregnation method using NaBH4 as the reducing agent. Powder X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, N2 adsorption-desorption, and inductively coupled plasma-atomic emission spectroscopy measurements wer...

Journal: :Chemical communications 2014
Jialong Liu Wei Liu Qian Sun Shouguo Wang Kai Sun Johannes Schwank Rongming Wang

NiPt hollow spheres decorated by Pt nanoparticles were synthesized by a facile wet chemical route through galvanic replacement. In situ STEM imaging and 3D reconstruction were performed to evidence the migration of Pt atoms during catalysis of CO oxidation, providing a practical insight into the structural stability of bimetallic catalysts.

2015
Brandon S. Walker Richard E. Nelson Brian R. Jackson David G. Grenache Edward R. Ashwood Robert L. Schmidt Sinuhe Hahn

BACKGROUND Non-invasive prenatal testing (NIPT) is a relatively new technology for diagnosis of fetal aneuploidies. NIPT is more accurate than conventional maternal serum screening (MSS) but is also more costly. Contingent NIPT may provide a cost-effective alternative to universal NIPT screening. Contingent screening used a two-stage process in which risk is assessed by MSS in the first stage a...

2014
Stephen Morris Saffron Karlsen Nancy Chung Melissa Hill Lyn S. Chitty

BACKGROUND Non-invasive prenatal testing (NIPT) for Down's syndrome (DS) using cell free fetal DNA in maternal blood has the potential to dramatically alter the way prenatal screening and diagnosis is delivered. Before NIPT can be implemented into routine practice, information is required on its costs and benefits. We investigated the costs and outcomes of NIPT for DS as contingent testing and ...

Journal: :Danish medical journal 2017
Louise Bjerregaard Anne Betsagoo Stenbakken Camilla Skov Andersen Line Kristensen Cecilie Vibeke Jensen Peter Skovbo Anne Nødgaard Sørensen

INTRODUCTION The non-invasive prenatal test (NIPT) was introduced in the North Denmark Region in March 2013. NIPT is offered as an alternative to invasive tests if the combined first trimester risk of trisomy 21 (T21) is ≥ 1:300. The purpose of this study was to investigate the effect of NIPT implementation among high-risk pregnancies in a region with existing first-trimester combined screening...

2017
Kerry Oxenford Rebecca Daley Celine Lewis Melissa Hill Lyn S Chitty

BACKGROUND The availability of non-invasive prenatal testing (NIPT) for aneuploidies is expanding rapidly throughout the world. Training health professionals to offer NIPT in a way that supports informed choice is essential for implementation. The aim of this study was to develop and evaluate a training package for health professionals to support the introduction of NIPT into clinical practice....

Journal: :Australian family physician 2017
James Harraway

BACKGROUND Non-invasive prenatal testing (NIPT), also known as cell-free DNA testing and non-invasive prenatal screening (NIPS), is an important addition to the range of screening tests for fetal chromosomal abnormalities. For trisomy 21 in particular, NIPT is superior to other screening modalities. However, NIPT has limitations and complexities that requesting clinicians and their patients sho...

Journal: :Intractable & rare diseases research 2014
Lin Mei Qi Tang Baiyu Sun Lingzhong Xu

Noninvasive prenatal testing (NIPT) provides an innovative method to detect genetic conditions in fetuses using a maternal blood sample, thus avoiding the risk of miscarriage associated with traditional invasive procedures. Since 80% of rare diseases are genetic diseases, NIPT has the potential to detect rare genetic diseases early on and it has been used in many countries and regions. Since Ch...

2014
Mattias Neyt Frank Hulstaert Wilfried Gyselaers

BACKGROUND The first- and second-trimester screening for trisomy 21 (T21) are reimbursed for all pregnant women in Belgium. Using a cut-off risk of 1:300 for T21, about 5% of all pregnant women are referred for definitive prenatal diagnosis using an invasive test, at a sensitivity of (only) 72.5%. The sensitivity and specificity of the non-invasive prenatal test (NIPT) are over 99% but come at ...

2016
A. Theresa Wittman S. Shahrukh Hashmi Hector Mendez-Figueroa Salma Nassef Blair Stevens Claire N. Singletary

Objective To determine patient perception of residual risk after receiving a negative non-invasive prenatal testing result. Introduction Recent technological advances have yielded a new method of prenatal screening, non-invasive prenatal testing (NIPT), which uses cell-free fetal DNA from the mother's blood to assess for aneuploidy. NIPT has much higher detection rates and positive predictive v...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید