Results 71 to 80 of about 4,213,516 (338)

Path Integral Approach to Strongly Nonlinear Composite

, 2000
We study strongly nonlinear disordered media using a functional method. We solve exactly the problem of a nonlinear impurity in a linear host and we obtain a Bruggeman-like formula for the effective nonlinear susceptibility.
B. K. Chakrabarti, D. A. G. Bruggeman, D. J. Bergman, D. Stroud, G. A. Niklasson, H.-C. Lee, H.-C. Lee, H.-C. Lee, J. P. Straley, L. Gao, L. Sali, L. Sali, M. Barthélémy, M. Osofsky, Marc Barthélémy, O. Levy, O. Levy, P. M. Hui, P. M. Hui, P. M. Hui, P. M. Hui, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, R. Blumenfeld, R. Einziger, R. Landauer, R. R. Tremblay, W. M. V. Wan, X. C. Zeng, X. C. Zeng, X. Zhang, Y. Meir, Y.-P. Pellegrini, Y.-P. Pellegrini   +35 more
core   +3 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Mesoscopic superpositions of states - approach to classicality and diagonalization in coherent state basis [PDF]

, 1998
I consider the interaction of a superposition of mesoscopic coherent states and its approach to a mixed state as a result of a suitably controlled environment.
Agarwal, G. S.
core   +2 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Feasibility of utilizing ultra-low-dose contrast medium for pancreatic artery depiction using the combination of advanced virtual monoenergetic imaging and high-concentration contrast medium: an intra-patient study

Insights into Imaging, 2021
Objectives The least amount of contrast medium (CM) should be used under the premise of adequate diagnosis. The purpose of this study is to evaluate the feasibility of utilizing ultra-low-dose (224 mgI/kg) CM for pancreatic artery depiction using the ...
Juan Li, Yu-hong Wang, Fu-ling Zheng, Xin-yue Chen, Yun Lin, Cai-rong Zhu, Yi-fan Wu, Qiang Xu, Zheng-yu Jin, Hua-dan Xue   +9 more
doaj   +1 more source

How statistical forces depend on thermodynamics and kinetics of driven media

, 2015
We study the statistical force of a nonequilibrium environment on a quasi-static probe. In the linear regime the isothermal work on the probe equals the excess work for the medium to relax to its new steady condition with displaced probe.
Basu, Urna, Maes, Christian, Netocny, Karel   +2 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Pulmonary embolism diagnosis with D-dimer levels and computed tomography

Health SA Gesondheid: Journal of Interdisciplinary Health Sciences
Background: Pulmonary embolism (PE), a common heart and blood vessel disease, causes complications such as haemodynamic instability and cardiovascular mortality. Timely diagnosis and treatment are imperative for managing this potentially life-threatening
Rochelle A. Kruger, Jeanetta du Plessis, Henra Muller   +2 more
doaj   +1 more source

Improving Patient to Patient CT Value Uniformity with an Individualized Contrast Medium Protocol Tailored to Body Weight and Contrast Medium Concentration in Coronary CT Angiography. [PDF]

PLoS ONE, 2015
To determine whether body weight and concentration dependent contrast medium (CM) injection protocols can improve patient to patient CT value uniformity more than the conventional injection protocols with fixed injection parameters in coronary CT ...
Yan Xing, Gulina Azati, Cun-xue Pan, Jun Dang, Sailendra Jha, Wen-ya Liu   +5 more
doaj   +1 more source

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source