Results 51 to 60 of about 367,498 (388)

On the use of hypodermic needles in electrospray [PDF]

EPJ Web of Conferences, 2013
EPJ Web of Conferences, 54, 01128-2 - 01128-5 We present an experimental analysis of electrospray where the standard feeding capillary was re placed with a hypodermic needle. Both the current intensity and the jet diameter were measured for a variety of leaky-dielectric liquids. The results obtained with a feeding capillary and a hypodermic needle
Rebollo Muñoz, N., Montanero, J. M., Gañán-Calvo, Alfonso M.   +2 more
openaire   +4 more sources

Fragmentation reactions using electrospray ionization mass spectrometry: an important tool for the structural elucidation and characterization of synthetic and natural products.

Natural product reports (Print), 2016
Over the last decade, the number of studies reporting the use of electrospray ionization mass spectrometry (ESI-MS) in combination with collision cells (or other activation methods) to promote fragmentation of synthetic and natural products for ...
D. Demarque, A. Crotti, R. Vessecchi, J. Lopes, N. Lopes   +4 more
semanticscholar   +1 more source

Electrospray mass spectrometry of borane salts: The electrospray needle as an electrochemical cell [PDF]

Journal of the American Society for Mass Spectrometry, 1995
Two borane salts ([(Me)4N][B3H8] and Cs[B3H8]) were examined by electrospray mass spectrometry in the positive ion mode. Acetonitrile solutions provided the most informative spectra; the salts exhibited a remarkable degree of clustering under electrospray conditions, and virtually all signals corresponded to cationic cluster ions of the general formula
Donald F. Gaines, Cornelis E. C. A. Hop, Dovas A. Saulys   +2 more
openaire   +3 more sources

Electrospray synthesis of PLGA TIPS microspheres [PDF]

, 2015
We successfully demonstrate the synthesis of polymer microspheres using a single electrospray source, and show their physical characterisation. Electrospray has proven to be a versatile method to manufacture particles, giving tight control over size with
Bowen, J., Day, R. M., Gomez, A., Kenyon, A. J., Malik, S. A., Ng, W. H., Tang, J.   +6 more
core  

Mobile robot based electrostatic spray system for controlling pests on cotton plants in Iraq [PDF]

, 2015
A mobile robot based electrostatic spray system was developed to combat pest infestation on cotton plants in Iraq. The system consists of a charged spray nozzle, a CCD camera, a mobile robot (vehicle and arm) and Arduino microcontroller.
Al-Mamury, M, Al-Raweshidy, H, Balachandran, W, Manivannan, N   +3 more
core   +1 more source

Efficiency of nano-electrospray ionization [PDF]

Journal of the American Society for Mass Spectrometry, 2005
The efficiency of nano-electrospray ionization, defined as the flux of ions reaching the detector of a triple-quadrupole mass spectrometer divided by the flux of analyte ions leaving the needle, has been measured in a series of controlled experiments with dodecyltrimethyl ammonium (DDTMA) bromide, myoglobin, Glu- [1]-fibrinopeptide, and gramicidin S ...
Bruce A. Thomson, K. W. Michael Siu, Ayman El-Faramawy   +2 more
openaire   +3 more sources

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

FEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer, Philip Hinchliffe, Marko Hanževački, Christopher R. Bethel, Catherine L. Tooke, Marc W. Van der Kamp, Krisztina M. Papp‐Wallace, Robert A. Bonomo, Stuart Shapiro, Adrian J. Mulholland, James Spencer   +10 more
wiley   +1 more source

NK Cell-Encapsulated Porous Microspheres via Microfluidic Electrospray for Tumor Immunotherapy.

ACS Applied Materials and Interfaces, 2019
Immunotherapy has recently garnered significant research interest in the field of clinical cancer management. The potential of tumor immunotherapy has been demonstrated for targeting a variety of tumors, both in vivo and in vitro, yielding some ...
Dan Wu, Yunru Yu, Cheng Zhao, Xin Shou, Yun Piao, Xin Zhao, Yuanjin Zhao, Shuqi Wang   +7 more
semanticscholar   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Tonic signaling of the B‐cell antigen‐specific receptor is a common functional hallmark in chronic lymphocytic leukemia cell phosphoproteomes at early disease stages

Molecular Oncology, EarlyView.
B‐cell chronic lymphocytic leukemia (B‐CLL) and monoclonal B‐cell lymphocytosis (MBL) show altered proteomes and phosphoproteomes, analyzed using mass spectrometry, protein microarrays, and western blotting. Identifying 2970 proteins and 316 phosphoproteins, including 55 novel phosphopeptides, we reveal BCR and NF‐kβ/STAT3 signaling in disease ...
Paula Díez, Pablo Juanes‐Velasco, Marina L. García‐Vaquero, Conrad Droste, Alicia Landeira‐Viñuela, Miguel Alcoceba, Helena Fidalgo‐Gómez, Sara Misiego‐Herrero, Almudena Navarro‐Bailón, Mónica Baile, José M. Bastida, Jose Manuel Sanchez‐Santos, Rafael Góngora, Julia Almeida, Marcos Gonzalez‐Diaz, Alberto Orfao, Javier De Las Rivas, Manuel Fuentes   +17 more
wiley   +1 more source