Results 51 to 60 of about 48,105 (319)

A new method for the separation of androgens from estrogens and for the partition of estriol from the estrone-estradiol fraction: with special reference to the identification and quantitative microdetermination of estrogens by ultraviolet absorption spectrophotometry [PDF]

, 1948
It is recognized generally that a qualitative and quantitative knowledge of the excretion pattern of the urinary estrogens is one index to an understanding of the functional activity of the ovary and adrenal cortex.
Friedgood, Harry B., Garst, Josephine B., Haagen-Smit, A. J.   +2 more
core  

Fully Bio‐Based Gelatin Organohydrogels via Enzymatic Crosslinking for Sustainable Soft Strain and Temperature Sensing

Advanced Functional Materials, EarlyView.
Enzymatically crosslinked gelatin‐based organohydrogels, fabricated through a fully bio‐based and scalable process, exhibit exceptional strain and temperature sensing capabilities with minimal interference from environmental humidity. These transparent, stretchable, and ionically conductive materials operate without synthetic fillers or dopants.
Pietro Tordi, Adrián Tamayo, Yeonsu Jeong, Bin Han, Tamer Al Kayal, Aida Cavallo, Massimo Bonini, Paolo Samorì   +7 more
wiley   +1 more source

Synthesis of silver nanoparticles using plant extracts from Erythrina abyssinica aerial parts and assessment of their anti-bacterial and anti-oxidant activities

Results in Chemistry, 2022
In the present study, silver nanoparticles were synthesized using Erythrina abyssinica aerial parts as both reducing and capping agents. Three extracts were obtained from the plant using methanol, acetone and water.
Netai Mukaratirwa-Muchanyereyi, Cecilia Gusha, Munyaradzi Mujuru, Upenyu Guyo, Stephen Nyoni   +4 more
doaj   +1 more source

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +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

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

Advanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee, Henry Lee, Patricia Taladriz‐Blanco, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +5 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

A FEROS spectroscopic study of the extreme O supergiant He 3-759

, 2009
We present a study of the extreme O-type supergiant He 3-759 using new high-resolution FEROS data, revealing that it is a near spectroscopic twin of HD 151804 (O8 Iaf).
Arnaboldi, Benjamin, Bohannan, C. J. Evans, Caldwell, Carlson, Conti, Crowther, Crowther, Crowther, de Winter, Drew, Hadfield, Henize, Herbig, Hillier, Hillier, Humphreys, Kaufer, Lanz, Leitherer, Lejeune, Meynet, Meynet, Najarro, P. A. Crowther, Parker, Prinja, Reid, Roberts, Shore, Snow, Thé, Walborn, Witham   +34 more
core   +1 more source

MagPiezo: A Magnetogenetic Platform for Remote Activation of Endogenous Piezo1 Channels in Endothelial Cells

Advanced Functional Materials, EarlyView.
MagPiezo enables wireless activation of endogenous Piezo1 channels without genetic modification using 19 nm magnetic nanoparticles and low‐intensity magnetic fields. It generates torque forces at the piconewton scale to trigger mechanotransduction in endothelial cells, standing as a novel platform to interrogate and manipulate Piezo1 activity in vitro.
Susel Del Sol‐Fernández, Mariarosaria De Simone, Yilian Fernández‐Afonso, Daniel Garcia‐Gonzalez, Pablo Martínez‐Vicente, Thomas van Zanten, Raluca M. Fratila, Maria Moros   +7 more
wiley   +1 more source

The Observations Of The X-Ray Source Hz Herculis-Hercules X-1 [PDF]

, 1980
NASAESASRCAstronom
Black, J., Burger, M., Davis, R. J., Deloore, C., Dupree, A. K., Gursky, H., Hammerschlaghensberge, G., Hartmann, Lee W., Howarth, I. D., Lamers, Hjglm, Matilsky, T. A., Raymond, J., Sandford, M. C. W., Sanner, F., Vandenbout, P., Vandenheuvel, E. P. J., Willis, A. J., Wilson, R.   +17 more
core   +1 more source