Results 41 to 50 of about 190,308 (299)

The Formaldehyde Masers in NGC 7538 and G29.96-0.02: VLBA, MERLIN, and VLA Observations

, 2003
The 6 cm formaldehyde (H2CO) maser sources in the compact HII regions NGC 7538-IRS1 and G29.96-0.02 have been imaged at high resolution (beams < 50 mas).
A. M. S. Richards, Akabane K., Baudry A., Bieging J., Boland W., Cesaroni R., Deharveng L., Dickel H. R., Downes D., Flower D. R., Forster J. R., Forster J. R., Forster J. R., Guibert J., Huettemeister S., Ian M. Hoffman, Israel F. P., Martin A. H. M., Martin-Pintado J., Mauersberger R., Minier V., Minier V., Palmer P., Patrick Palmer, van der Tak F. F. S., W. M. Goss, Walmsley C. M., Whiteoak J. B., Wilson T. L., Wilson T. L.   +29 more
core   +2 more sources

Mapping deuterated methanol toward L1544: I. Deuterium fraction and comparison with modeling [PDF]

, 2018
The study of deuteration in pre-stellar cores is important to understand the physical and chemical initial conditions in the process of star formation.
Bizzocchi, L., Caselli, P., Chacon-Tanarro, A., Giuliano, B. M., Lattanzi, V., Pineda, J. E., Punanova, A., Sipila, O., Spezzano, S., Vasyunin, A.   +9 more
core   +1 more source

A measurement strategy for non-dispersive ultra-violet detection of formaldehyde in indoor air: Spectral analysis and interferent gases [PDF]

, 2015
We have conducted an extensive review of published spectra in order to identify a region with potential for detection of formaldehyde in indoor air.
Davenport, John, Hodgkinson, Jane, Saffell, John R., Tatam, Ralph P.   +3 more
core   +1 more source

Impact of Cold Climates on Vehicle Emissions: The Cold Start Air Toxics Pulse [PDF]

, 2016
This project measured cold start emissions from four vehicles in winter using fast response instrumentation to accurately measure the time variation of the cold start emission pulse.
Huangfu, Yibo, Jobson, Tom
core  

Indoor air quality in California homes with code-required mechanical ventilation. [PDF]

, 2020
Data were collected in 70 detached houses built in 2011-2017 in compliance with the mechanical ventilation requirements of California's building energy efficiency standards.
Chan, Wanyu R, Kim, Yang-Seon, Offermann, Francis J, Singer, Brett C, Walker, Iain S   +4 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

Long-term Variability of H$_2$CO Masers in Star-forming Regions [PDF]

, 2017
We present results of a multi-epoch monitoring program on variability of 6$\,$cm formaldehyde (H$_2$CO) masers in the massive star forming region NGC$\,$7538$\,$IRS$\,$1 from 2008 to 2015 conducted with the GBT, WSRT, and VLA.
Andreev, N., Araya, E. D., Hoffman, I. M., Hofner, P., Kurtz, S., Linz, H., Lorran-Costa, I., Olmi, L.   +7 more
core   +2 more sources

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Masers

, 2011
An astrophysical MASER (Microwave Amplification by Stimulated Emission of Radiation) is a source of stimulated spectral line emission. Maser emission is observed from the circumstellar envelopes of evolved stars, molecular clouds/star-forming regions ...
Humphreys, Elizabeth
core   +1 more source

Mapping isoprene emissions over North America using formaldehyde column observations from space [PDF]

, 2003
We present a methodology for deriving emissions of volatile organic compounds (VOC) using space-based column observations of formaldehyde (HCHO) and apply it to data from the Global Ozone Monitoring Experiment (GOME) satellite instrument over North ...
Chance, K., Fiore, A. M., Jacob, D. J., Kurosu, T. P., Martin, R. V., Palmer, P. I.   +5 more
core   +2 more sources