Results 51 to 60 of about 2,030,078 (295)

Diagnostics tools and methods for negative ion source plasmas, a review

New Journal of Physics, 2017
Plasma parameter measurements for negative hydrogen (H ^− ) ion sources have been playing an important role in clarifying fundamental physics related to negative ion production and destruction processes. Measured data of beam properties, such as H ^− ion
Katsuyoshi Tsumori, Motoi Wada
doaj   +1 more source

Deterministic single-photon source from a single ion

, 2009
We realize a deterministic single-photon source from one and the same calcium ion interacting with a high-finesse optical cavity. Photons are created in the cavity with efficiency (88 +- 17)%, a tenfold improvement over previous cavity-ion sources ...
A Stute, Almendros M Huwer J Piro N Rohde F Schuck C Hennrich M Dubin F Eschner J, Berman P R, C Russo, Carmichael H, Grangier P, H G Barros, Miller R, P O Schmidt, R Blatt, Russo C, T E Northup   +11 more
core   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Ion source of DMS-01 scientific equipment for «AIST no 2» small spacecraft

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The main requirements imposed upon ion sources for on-board time-of-flight mass spectrometers are considered in the paper. An approximate formula to calculate the ionization cross section of an analyte substance is given.
N. D. Semkin, I. V. Piyakov, M. A. Rodina, D. V. Rodin   +3 more
doaj   +1 more source

Enhancement of Characteristics of Field Asymmetric Ion Mobility Spectrometer with Laser Ionization for Detection of Explosives in Vapor Phase

Chemosensors, 2020
Ion mobility spectrometry instrumentation today is widespread in the area of transport security and counterterrorism. This method of detection of explosive substances is highly appreciated for the existence of portable detectors capable of detecting ...
Vitalii A. Kostarev, Gennadii E. Kotkovskii, Alexander A. Chistyakov, Artem E. Akmalov   +3 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Adjustable ECR ion source control system: Ion Source Hydrogen Positive project

2014 19th IEEE-NPSS Real Time Conference, 2014
ISHP (Ion Source Hydrogen Positive) project consists of a highly versatile ECR type ion source. It has been built for several purposes, on the one hand, to serve as a workbench to test accelerator related technologies and validate in-house made developments, at the first stages.
Arredondo López de Gereñu, Iñigo, Eguiraun, Mikel, Jugo García, Josu, Piso, Daniel, Del Campo, María, Poggi, Tomaso, Varnasseri, Seadat, Feuchtwanger Morales, Jorge, Bilbao, J., González, Xabier, Harper, Giles, Muguira Urtubi, Leire, Miracoli, Rosalba, Corres Ochoa De Olano, Francisco Javier, Belver, Daniel, Echevarria, Pablo, Garmendia, Nagore, González, P., Echevarría Ecenarro, Víctor   +18 more
openaire   +2 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

Note: Development of ESS Bilbao's proton ion source: Ion Source Hydrogen Positive

Review of Scientific Instruments, 2014
The Ion Source Hydrogen positive is a 2.7 GHz off-resonance microwave discharge ion source. It uses four coils to generate an axial magnetic field in the plasma chamber around 0.1 T that exceeds the ECR resonance field. A new magnetic system was designed as a combination of the four coils and soft iron in order to increase the reliability of the source.
Miracoli, Rosalba, Feuchtwanger Morales, Jorge, Arredondo López de Gereñu, Iñigo, Belver, Daniel, González, P., Corres Ochoa De Olano, Francisco Javier, Djekic, Slobodan, Echevarria, Pablo, Eguiraun, Mikel, Garmendia, Nagore, Muguira Urtubi, Leire   +10 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