Results 51 to 60 of about 1,617,958 (348)

Ions in motor vehicle exhaust and their dispersion near busy roads [PDF]

, 2010
Measurements in the exhaust plume of a petrol-driven motor car showed that molecular cluster ions of both signs were present in approximately equal amounts.
Jayaratne, Rohan, Ling, Xuan, Morawska, Lidia   +2 more
core   +2 more sources

Negative hydrogen ion ECR source

Review of Scientific Instruments, 1992
To find optimum conditions for the generation of negatively charged hydrogen ions, an ECR source has been investigated. The source consists of a cylindrical cavity placed between Sm-Co disk-type magnetic poles, and microwave and extraction systems.
Dougar-Jabon V.D., Reznikov D.V., Santos Mayorga R.   +2 more
openaire   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Development of versatile multiaperture negative ion sources [PDF]

AIP Conference Proceedings, 2015
Enhancement of negative ion sources for production of large ion beams is a very active research field nowadays, driven from demand of plasma heating in nuclear fusion devices and accelerator applications. As a versatile test bench, the ion source NIO1 (Negative Ion Optimization 1) is being commissioned by Consorzio RFX and INFN.
Cavenago M, Serianni G, Antoni V, Bigi M, De Muri M, Pasqualotto R, Recchia M, Veltri P, Agostinetti P, Barbisan M, Baseggio L, Cervaro V, Cazzador M, Degli Agostini F, Franchin L, Kulevoy T, Laterza B, Mimo A, Minarello A, Petrenko S, Ravarotto D, Rossetto F, Sattin M, Zaniol B, Zucchetti S   +24 more
openaire   +3 more sources

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

Molecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak, Bodee Nutho, Worawat Wattanathana, Narumon Phaonakrop, Bunnatut Panasawatwong, Katharina Erlenbach‐Wuensch, Sittiruk Roytrakul, Regine Schneider‐Stock, Pithi Chanvorachote   +8 more
wiley   +1 more source

Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

Journal of Analytical Methods in Chemistry, 2020
An electron impact ion source-adopted magnetic field-enhanced technology has been designed for enhancing the electron intensity and the ionization efficiency.
Guochen Qi, Di Tian, Guolun Gao, Guangda Liu, Chunling Qiu, Tao Long   +5 more
doaj   +1 more source

Patient‐specific pharmacogenomics demonstrates xCT as predictive therapeutic target in colon cancer with possible implications in tumor connectivity

Molecular Oncology, EarlyView.
This study integrates transcriptomic profiling of matched tumor and healthy tissues from 32 colorectal cancer patients with functional validation in patient‐derived organoids, revealing dysregulated metabolic programs driven by overexpressed xCT (SLC7A11) and SLC3A2, identifying an oncogenic cystine/glutamate transporter signature linked to ...
Marco Strecker, Keren Zohar, Martin Böttcher, Thomas Wartmann, Henry Freudenstein, Maximilian Doelling, Mihailo Andric, Wenjie Shi, Or Kakhlon, Katrin Hippe, Beatrix Jahnke, Dimitrios Mougiakakos, Franziska Baenke, Daniel Stange, Roland S. Croner, Michal Linial, Ulf D. Kahlert   +16 more
wiley   +1 more source

Experimental and simulation study on the backstreaming positive ions on the quarter-size negative ion source for CRAFT NNBI test facility

Nuclear Engineering and Technology
As an effective methods of plasma heating, neutral beam injection (NBI) systems based on negative hydrogen ion sources will be utilized in future magnetic-confinement nuclear fusion experiments.
Yongjian Xu, Yuwen Yang, Jianglong Wei, Ling Yu, Wen Deng, Rixin Wang, Yuming Gu, Chundong Hu, Yahong Xie   +8 more
doaj   +1 more source

Direct detection and identification of active pharmaceutical ingredients in intact tablets by helium plasma ionization (HePI) mass spectrometry

Journal of Pharmaceutical Analysis, 2014
A simple modification converts an electrospray ion source to an ambient-pressure helium plasma ionization source without the need of additional expensive hardware.
Athula B. Attygalle, Freneil B. Jariwala, Julius Pavlov, Zhihua Yang, Jason A. Mahr, Mabel Oviedo   +5 more
doaj   +1 more source

Study of charge state enhancement by means of the coupling of a Laser Ion Source to the ECR ion source SERSE [PDF]

, 1999
The possibility to produce intense ion beams from solid elements, by using a pulsed Laser ion source as the first stage of the superconducting ECR ion source SERSE is discussed in the following.
Celona, L, Ciavola, G, Gammino, S, Torrisi, L   +3 more
core