نتایج جستجو برای: شاخص esi

تعداد نتایج: 84052  

2018
Guen Young Lee Joon Woo Lee Jin S. Yeom Ki-Jeong Kim Hyung-Ik Shin Heung Sik Kang

Objective To evaluate the incidence, types and association of systemic reactions after an epidural steroid injection (ESI) with patient demographics, ESI factors and repeated occurrence of an ESI. Materials and Methods This prospective observational study was approved by the Institutional Review Board of our hospital, and written informed consent was obtained from all the participants. From O...

2012
Janina Witowska-Jarosz Małgorzata Jarończyk Aleksander P. Mazurek Ingebrigt Sylte Andrzej J. Bojarski Zdzisław Chilmonczyk Maciej Jarosz

Six synthesized 6-nitroquipazine derivatives were examined by electron ionization (EI) and electrospray ionization (ESI) mass spectrometry in positive and negative ion mode. The compounds exhibit high affinity for the serotonin transporter (SERT) and belong to a new class of SERT inhibitors. The EI mass spectra registered in negative ion mode showed prominent molecular ions for all the compound...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2010
Hiroshi Moriwaki Ayaka Hagiwara Midori Takasaki Fuminori Izumi Arata Watanabe Ryo Shimizu Natsuko Kuribayashi Yui Totani Yuka Suzuki

A rapid method for the characterization of sake by measuring the ratio of the peak intensities of taste components in sake, using electrospray ionization/mass spectrometry (ESI/MS) has been developed. Twenty-six different kinds of sake samples were collected and analyzed by ESI/MS. The ESI/MS ion peaks were assigned to amino acids, organic acids, and sugars. Principal component analysis was per...

2017
Xin-Jing Yue Xiao-Wen Cui Zheng Zhang Ran Peng Peng Zhang Zhi-Feng Li Yue-Zhong Li

BACKGROUND Microbial secondary metabolism is regulated by a complex and mostly-unknown network of global and pathway-specific regulators. A dozen biosynthetic gene clusters for secondary metabolites have been reported in myxobacteria, but a few regulation factors have been identified. RESULTS We identified a transcription regulator Esi for the biosynthesis of epothilones. Inactivation of esi ...

2017
Jiaqi Shi Yingrui Wang Ruibin Fu Jianhua Zhang

To alleviate environmental pollution and improve the energy usage efficiency of terminals, energy systems integration (ESI) has become an important paradigm in the energy structure evolution. Power, gas and heat systems are becoming tightly interlinked with each other in ESI. The dispatching strategy of local-area ESI has significant impact on its operation. In this paper, a local-area ESI oper...

Journal: :Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2007
Philip R Gafken Catalin E Doneanu Samuel E Bennett Douglas F Barofsky

In this report, the effectiveness of high performance liquid chromatography (HPLC) in conjunction with electrospray ionization mass spectrometry (ESI-MS) is examined as a tool for identifying the sites of crosslinking in a protein that has been photoreacted with a non-photolabeled oligonucleotide. ESI-MS and MALDI-MS analyses preceded by off-line microflow and nanoflow HPLC, on-line microflow H...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2015
Yasumi Anan Genki Nakajima Yasumitsu Ogra

We demonstrated the complementary use of inductively coupled plasma-mass spectrometry (ICP-MS) and electrospray ionization quadrupole time-of-flight mass spectrometry (ESI-Q-TOF-MS) for the analysis of Se-containing compounds, such as selenate, selenomethionine (SeMet), and trimethylselenonium ion (TMSe), found in biological samples. The sensitivity of ESI-Q-TOF-MS for Se-containing compounds w...

Journal: :Pain physician 2016
JiHee Hong Sungwon Jung

BACKGROUND Interlaminar epidural steroid injection (ESI) is a well-established intervention to improve radicular leg pain. However, few studies have demonstrated the prognostic factors for interlaminar ESI. OBJECTIVE To investigate the clinical effectiveness and prognostic indicators of parasagittal interlaminar ESI during a 2-week follow-up. STUDY DESIGN Prospective evaluation. SETTING A...

Journal: :Phytopathology 2008
E Postinikova C Baldwin C A Whitehouse A Sechler N W Schaad R Sampath V Harpin F Li R Melton L Blyn J Drader S Hofstadler W L Schneider

Polymerase chain reaction/electrospray ionization-mass spectrometry (PCR/ESI-MS, previously known as "TIGER") utilizes PCR with broad-range primers to amplify products from a wide array of organisms within a taxonomic group, followed by analysis of PCR amplicons using mass spectrometry. Computer analysis of precise masses allows for calculations of base compositions for the broad-range PCR prod...

Journal: :Analytical chemistry 2016
Sven Kochmann Fletcher J Agostino J C Yves LeBlanc Sergey N Krylov

In this technical note, we demonstrate the hyphenation of production-scale free-flow electrophoresis (FFE) and sheathless electrospray ionization mass spectrometry (ESI-MS). In contrast to previous hyphenation approaches, we used a highly conductive background electrolyte (BGE) required for production-scale FFE. We found that this kind of BGE as well as a production-scale setup leads to signifi...

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