Results 61 to 70 of about 455,062 (389)

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

, 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

Multiscale Thermal Analysis of Gold Nanostars in 3D Tumor Spheroids: Integrating Cellular‐Level Photothermal Effects and Nanothermometry via X‐Ray Spectroscopy

Advanced Healthcare Materials, EarlyView.
This study investigates nanoscale temperatures generated by photoexcited gold nanostars and their correlation with microscale thermal damage at the cellular level. Using X‐ray absorption spectroscopy and confocal microscopy in 3D cancer spheroids, it assesses localized heating effects and examines tumor cell structure and integrity, offering insights ...
Rosalía López‐Méndez, Anastasiia Dubrova, Javier Reguera, Rául Magro, Fátima Esteban‐Betegón, Ana Parente, Miguel Ángel García, Julio Camarero, Emiliano Fonda, Claire Wilhelm, Álvaro Muñoz‐Noval, Ana Espinosa   +11 more
wiley   +1 more source

Improvement of the Method for Determining Total Nitrogen in Water Quality Using Alkaline Potassium Persulfate Ultraviolet Spectrophotometry

Yankuang ceshi
Alkaline potassium persulfate (K2S2O8) ultraviolet (UV) spectrophotometry is the routine method to analyze total nitrogen (TN) in water and is important for studying pollutants in water and the geochemical cycling of TN.
Zhenchao LIU, Zhixiong LI, Qianshu LU, Xiaona WANG, Song ZHANG, Yaohua HU   +5 more
doaj   +1 more source

Dissolution test for glibenclamide tablets

Química Nova, 2007
The aim of this work is to develop and validate a dissolution test for glibenclamide tablets. Optimal conditions to carry out the dissolution test are 500 mL of phosphate buffer at pH 8.0, paddles at 75 rpm stirring speed, time test set to 60 min and ...
Elisabeth Aparecida dos Santos Gianotto, Renata Pires Arantes, Maurilio José Lara-Filho, Alexandre Cezar Saraiva Casimiro Filho, Marlene Maria Fregonezi-Nery   +4 more
doaj   +1 more source

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

Journal 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, Timothy Tertsea Awuhe, Igbalagh Chia Azuaga, Ernest Isaac, Faisal Shuaibu, Banwala Yohanna   +5 more
doaj   +1 more source

On the Limb Darkening, Spectral Energy Distribution, and Temperature Structure of Procyon [PDF]

Astrophys.J.633:424-439,2005, 2005
We have fit synthetic visibilities from 3-D (CO5BOLD + PHOENIX) and 1-D (PHOENIX, ATLAS 12) model stellar atmospheres of Procyon (F5 IV) to high-precision interferometric data from the VLTI Interferometer (K-band) and from the Mark III interferometer (500 nm and 800 nm).
arxiv   +1 more source

Ultraviolet Spectrophotometry of Early-Type Stars [PDF]

Symposium - International Astronomical Union, 1976
The ultraviolet spectra of B stars obtained with the sky scan telescope in the TD1 satellite have been used to obtain narrow-band magnitudes at several wavelengths. These photometric bands have an effective half-width of 100 Å. We have proposed a two-dimensional classification scheme based on ultraviolet colours, and some preliminary results are ...
K. Nandy, C. M. Humphries, G. I. Thompson   +2 more
openaire   +1 more source

Estimation of Uncertainty for Measuring Galantamine Hydrobromide in Pharmaceutical Formulation Using Ultraviolet Spectrophotometry

, 2013
Analytical results play a vital role in quality control of bulk drugs and pharmaceutical formulations. The main aim of this proposed research work is to study uncertainty estimation for quantitative determination of Galantamine hydrobromide from ...
Karan Mittal, T. Dhingra, A. Upadhyay, R. Mashru, J. Malik, A. Thakkar   +5 more
semanticscholar   +1 more source

Injectable 2D‐MoS2‐integrated Bioadhesive Hydrogel as Photothermal‐Derived and Drug‐Delivery Implant for Colorectal Cancer Therapy

Advanced Healthcare Materials, EarlyView.
An injectable, adhesive hydrogel integrating 2D‐MoS2 and 5‐fluorouracil (AlgNB/MoS2/5‐FU) is developed for near‐infrared‐triggered photothermal therapy and localized drug delivery. The adhesive hydrogel demonstrates superior tumor anchoring, efficient photothermal conversion, and synergistic inhibition of colorectal cancer progression, offering a ...
Xiaojun Long, Jiawei Wang, Huijuan Wang, Kepeng Hu, Wei Zhang, Weiming Lin, Chao Fang, Kui Cheng, Zhangfa Song   +8 more
wiley   +1 more source

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

Scientific 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, Karina E. Giesbrecht, Brandon J. McNabb, Jennifer E. Long, Curtis Martin, Shea N. Wyatt, Marcos G. Lagunas, Diana E. Varela   +7 more
doaj   +1 more source