scholarly journals Enhanced Isotopic Ratio Outlier Analysis (IROA) Peak Detection and Identification with Ultra-High Resolution GC-Orbitrap/MS: Potential Application for Investigation of Model Organism Metabolomes

Metabolites ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 9 ◽  
Author(s):  
Yunping Qiu ◽  
Robyn Moir ◽  
Ian Willis ◽  
Suresh Seethapathy ◽  
Robert Biniakewitz ◽  
...  
2020 ◽  
Vol 12 (32) ◽  
pp. 4037-4047
Author(s):  
Xi Chen ◽  
Baojin Zhao ◽  
Mengjiao Zhang ◽  
Min Dong ◽  
Yunlan Li ◽  
...  

A feasible analytical method based on HPLC-quadrupole/electrostatic field orbitrap high-resolution mass spectrometry (HPLC-Q/orbitrap MS) was established for the identification and characterization of anticancer constituents in ethyl acetate components from Hedyotis diffusa.


2018 ◽  
Vol 6 (4) ◽  
Author(s):  
Yiwei Han ◽  
Jingyan Dong

The paper provides an overview of high-resolution electrohydrodynamic (EHD) printing processes for general applications in high-precision micro/nanoscale fabrication and manufacturing. Compared with other printing approaches, EHD printing offers many unique advantages and opportunities in the printing resolution, tunable printing modes, and wide material applicability, which has been successfully applied in numerous applications that include additive manufacturing, printed electronics, biomedical sensors and devices, and optical and photonic devices. In this review, the EHDs-based printing mechanism and the resulting printing modes are described, from which various EHD printing processes were developed. The material applicability and ink printability are discussed to establish the critical factors of the printable inks in EHD printing. A number of EHD printing processes and printing systems that are suitable for micro/nanomanufacturing applications are described in this paper. The recent progresses, opportunities, and challenges of EHD printing are reviewed for a range of potential application areas.


1971 ◽  
Vol 5 (5) ◽  
pp. 415-420 ◽  
Author(s):  
James S. Mattson ◽  
Harry B. Mark ◽  
Arnold Prostak ◽  
Clarence E. Schutt

Plant Disease ◽  
2017 ◽  
Vol 101 (8) ◽  
pp. 1449-1454 ◽  
Author(s):  
Brian W. Bahder ◽  
Ericka E. Helmick ◽  
Nigel A. Harrison

Lethal yellowing (LY) and Texas Phoenix palm decline (TPPD) are two important phytoplasma diseases of palms in Florida. Both have been responsible for major economic losses historically and remain a constant threat to the sustainability of palm production in the landscaping and nursery industries in Florida. These two diseases cause rapid, lethal decline in afflicted palms, so rapid detection and identification is crucial to implement appropriate management strategies to reduce further spread and losses. In this study, a qPCR assay was developed to detect and identify the causal agents of LY and TPPD. Based on sequence data of the 16S gene for the 16SrIV-A phytoplasma (LY) and the 16SrIV-D phytoplasma (TPPD), two regions were identified in the gene that possessed sufficient variation to yield amplicons with measurable differences in melting temperature based on high resolution melt analysis (HRMA). One region was in the 5′ region and the other was located in the 3′ region of the gene. Products from both regions yielded amplicons with significantly different melting temperatures between the two phytoplasma strains. This research allows for the detection and identification of phytoplasmas in palms rapidly by eliminating many lengthy and post-PCR steps commonly used in phytoplasma identification.


RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28119-28125 ◽  
Author(s):  
Qing Chen ◽  
Xiao-Dong Pan ◽  
Bai-Fen Huang ◽  
Jian-Long Han ◽  
Biao Zhou

The quantification capability of high resolution mass spectrometry is of great interest to analysts.


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