Results 31 to 40 of about 55,459 (323)

Synthesis, Characterization and Antimicrobial Activities of Copper-Tea Leaves (Camellia Sinensis) Extract Nanoparticles.

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
Nanoparticles, NPs synthesis has gained attention recently due to their ease of preparation (especially green synthesis), availability of raw materials and usefulness. The green synthesis of copper nanoparticles (CuNPs) was done using Tea leaves extract-
Boniface Tersoo Iorhuna   +5 more
doaj   +1 more source

Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared [PDF]

open access: yes, 2014
The measurement of precise absolute fluxes for stellar sources has been pursued with increased vigor since the discovery of the dark energy and the realization that its detailed understanding requires accurate spectral energy distributions (SEDs) of redshifted Ia supernovae in the rest frame.
arxiv   +1 more source

An 8-year record of phytoplankton productivity and nutrient distributions from surface waters of Saanich Inlet

open access: yesScientific Data, 2022
Measurement(s) chlorophyll a • biogenic silica • carbon uptake  • nitrogen uptake • particulate carbon • particulate nitrogen • inorganic macronutrient dissolved in ocean water • concentration of silicic acid in ocean water Technology Type(s) fluorometer
Sile M. Kafrissen   +7 more
doaj   +1 more source

Calibration of ultraviolet, mid-infrared and radio star formation rate indicators [PDF]

open access: yes, 2017
We present calibrations for star formation rate indicators in the ultraviolet, mid-infrared and radio continuum bands, including one of the first direct calibrations of 150 MHz as a star formation rate indicator. Our calibrations utilize 66 nearby star forming galaxies with Balmer decrement corrected H-alpha luminosities, which span 5 orders of ...
arxiv   +1 more source

Interpreting Flux from Broadband Photometry [PDF]

open access: yes, 2016
We discuss the transformation of observed photometry into flux for the creation of spectral energy distributions and the computation of bolometric luminosities.
Breeveld, Alice   +3 more
core   +4 more sources

Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions

open access: yesAdvanced Functional Materials, EarlyView.
A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang   +21 more
wiley   +1 more source

Pincer‐Type Pt(II)‐NHC Antibody‐Drug Conjugate for HER‐2‐Targeted Chemoimmunotherapy

open access: yesAdvanced Healthcare Materials, EarlyView.
The antibody‐drug conjugate Trastuzumab‐Pt1 has demonstrated successful development as a targeted therapeutic strategy for human epidermal growth factor receptor (HER‐2) high‐expression tumors. This innovative approach enables the efficient delivery of the cytotoxic payload Pt‐1 to mitochondria, thereby synergistically inducing necroptosis and ...
Tao Huang   +8 more
wiley   +1 more source

Development and validation of the discriminating method of prasugrel dissolution in tablets using ultraviolet detection

open access: yesActa Scientiarum. Health Sciences, 2014
Current study develops and validates a dissolution test for Prasugrel hydrochloride 10 mg in coated tablets. After sink condition, filters and drug stability were evaluated, the discriminatory dissolution conditions were achieved with a USP apparatus 1 ...
Camila Rigobello   +2 more
doaj   +1 more source

Carbon and Oxygen Galactic Gradients: Observational Values from HII Region Recombination Lines [PDF]

open access: yesAstrophys.J. 618 (2004) L95-L98, 2004
We present results of deep echelle spectrophotometry of eight Galactic HII regions located at Galactocentric distances between 6.3 and 10.4 kpc. The data have been taken with the Very Large Telescope (VLT) Ultraviolet Echelle Spectrograph (UVES) in the 3100 to 10360 A range.
arxiv   +1 more source

M4-18: The planetary nebula and its WC10 central star [PDF]

open access: yes, 1999
We present a detailed analysis of the planetary nebula M4-18 (G146.7+07.6) and its WC10-type Wolf-Rayet central star, based on high quality optical spectroscopy (WHT/UES, INT/IDS, WIYN/DensPak) and imaging (HST/WFPC2).
Crowther, Paul A., De Marco, Orsola
core   +3 more sources

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