Results 61 to 70 of about 589,709 (328)

Experimental evidence for the breakdown of a Hartree-Fock approach in a weakly interacting Bose gas [PDF]

, 2006
We study the formation of a quasi-condensate in a nearly one dimensional, weakly interacting trapped atomic Bose gas. We show that a Hartree Fock (mean-field) approach fails to explain the presence of the quasi-condensate in the center of the cloud: the ...
C. I. Westbrook, I. Bouchoule, J. Esteve, J.-B. Trebbia, L. Landau, S. Giorgini, Y. Castin   +6 more
core   +4 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Tetrahedral sheets of clay minerals and their edge valency-based entropy measures

Mathematical Biosciences and Engineering, 2023
Humanity has always benefited from an intercapillary study in the quantification of natural occurrences in mathematics and other pure scientific fields.
Qingqun Huang, Muhammad Labba, Muhammad Azeem, Muhammad Kamran Jamil , Ricai Luo   +4 more
doaj   +1 more source

Comparison of chemical clustering methods using graph- and fingerprint-based similarity measures [PDF]

, 2003
This paper compares several published methods for clustering chemical structures, using both graph- and fingerprint-based similarity measures. The clusterings from each method were compared to determine the degree of cluster overlap. Each method was also
Blankley, C.J., Raymond, J.W., Willett, P.   +2 more
core   +1 more source

PARP inhibitors elicit distinct transcriptional programs in homologous recombination competent castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
PARP inhibitors are used to treat a small subset of prostate cancer patients. These studies reveal that PARP1 activity and expression are different between European American and African American prostate cancer tissue samples. Additionally, different PARP inhibitors cause unique and overlapping transcriptional changes, notably, p53 pathway upregulation.
Moriah L. Cunningham, Jasibel Vasquez‐Gonzalez, Samantha M. Barnada, Salome Tchotorlishvili, Latese Jones, Ryan Maguire, Genevieve Lewis, Kinza Rizwan, Jenny Deng, Salma Koachar, Drithi Patel, Hailey Shankle, Tessa Mulders, Namra Ajmal, Charalambos Solomides, Emad S. Alnemri, Teresa F. Alnemri, Ayesha A. Shafi, Leonard G. Gomella, Wm Kevin Kelly, Steven B. McMahon, Matthew J. Schiewer   +21 more
wiley   +1 more source

Sum-edge characteristic polynomials of graphs

Journal of Taibah University for Science, 2019
Modelling a chemical compound by a (molecular) graph helps us to obtain some required information about the chemical and physical properties of the corresponding molecular structure.
Mert Sinan Oz, Cilem Yamac, Ismail Naci Cangul   +2 more
doaj   +1 more source

Computing Topological Indices and Polynomials of the Rhenium Trioxide

Journal of Mathematics, 2022
In the study of mathematical chemistry and chemical graph theory, a topological index, also known as a connectivity index, is the arithmetical framework of a graph that specifies its topology and also graph invariant.
Shahid Imran, Muhammad Mudassar Raza, Niat Nigar, Syed Ajaz K. Kirmani, Fikre Bogale Petros   +4 more
doaj   +1 more source

Crystal Graph Convolutional Neural Networks for an Accurate and Interpretable Prediction of Material Properties

, 2018
The use of machine learning methods for accelerating the design of crystalline materials usually requires manually constructed feature vectors or complex transformation of atom coordinates to input the crystal structure, which either constrains the model
Grossman, Jeffrey C., Xie, Tian
core   +1 more source

Emerging role of ARHGAP29 in melanoma cell phenotype switching

Molecular Oncology, EarlyView.
This study gives first insights into the role of ARHGAP29 in malignant melanoma. ARHGAP29 was revealed to be connected to tumor cell plasticity, promoting a mesenchymal‐like, invasive phenotype and driving tumor progression. Further, it modulates cell spreading by influencing RhoA/ROCK signaling and affects SMAD2 activity. Rho GTPase‐activating protein
Beatrice Charlotte Tröster, Melanie Kappelmann‐Fenzl, Anja Katrin Bosserhoff, Nicole Rachinger   +3 more
wiley   +1 more source

Heuristics-Guided Exploration of Reaction Mechanisms

, 2015
For the investigation of chemical reaction networks, the efficient and accurate determination of all relevant intermediates and elementary reactions is mandatory.
Bergeler, Maike, Proppe, Jonny, Reiher, Markus, Simm, Gregor N.   +3 more
core   +3 more sources