Results 91 to 100 of about 1,032,852 (327)

Gauge principle and QED [PDF]

, 2005
One of the major developments of twentieth century physics has been the gradual recognition that a common feature of the known fundamental interactions is their gauge structure.
Straumann, Norbert
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

A equação de Torricelli e o estudo do movimento retilíneo uniformemente variado (MRUV)

Revista Brasileira de Ensino de Física
Em primeiro lugar, este trabalho realiza uma tarefa de recuperar o papel histórico de Evangelista Torricelli, a fim de mostrar a sua importância para o estudo do movimento retilíneo uniformemente variado, mas também analisa a maneira de como a equação ν2
Marcos Antonio Rodrigues Macêdo
doaj   +1 more source

Measurements of top quark properties at the Tevatron collider

, 2011
The discovery of the top quark in 1995 opened a whole new sector of investigation of the Standard Model; today top quark physics remains a key priority of the Tevatron program.
Margaroli, Fabrizio
core   +1 more source

Bruno Rossi and Cosmic Rays: From Earth laboratories to Physics in Space [PDF]

, 2011
Rossi's career paralleled the evolution of cosmic-ray physics. Starting from the early 1930s his pioneering work on the nature and behavior of cosmic rays led to fundamental contributions in the field of experimental cosmic-ray physics and laid the ...
Bonolis, Luisa
core  

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Matrix metalloproteinase‐9 regulates cell adhesion and membrane protrusive activity of ovarian cancer cells

FEBS Open Bio, EarlyView.
Matrix metalloproteinase‐9 (MMP9) drives ovarian cancer progression. Using MMP9‐null cells (M9‐KO) created from ovarian cancer cells, we found MMP9 loss did not block Epidermal Growth Factor (EGF)‐driven E‐cadherin dissolution or EMT but delayed and reduced EGF‐driven membrane protrusions. Transient MMP9 re‐expression drove membrane protrusion.
Claire Strauel, Sam Bennett, Natalie Ehlinger, Nelson Cook, Katelyn Marvin, Caleb L. Lines, Sam Reyes, Brooke Kirby, Shawn M. Ellerbroek   +8 more
wiley   +1 more source

Sobre as causas naturais que formam a base empírica do fenômeno dos turbilhões nas cosmogonias: dos Pré-Socráticos a René Descartes

Revista Brasileira de Ensino de Física
Neste trabalho é apresentado um possível fundamento empírico para as teorias dos turbilhões que figuram em praticamente todas as teorias cosmogônicas dos pré-socráticos e mesmo presentes nas teorias de pensadores modernos como René Descartes e C ...
José Plínio Baptista, Laércio Ferracioli   +1 more
doaj   +1 more source

The Emergence of Anticommuting Coordinates and the Dirac-Ramond-Kostant operators

, 2004
The history of anticommuting coordinates is decribed.Comment: 14 pages, Contribution to the Proceedings of The Gunnar Nordstr\"om Symposium on Theoretical Physics - The Physics of Extra ...
Brink, Lars
core   +1 more source