Results 41 to 50 of about 709,830 (296)

Unknotting information from Heegaard Floer homology [PDF]

open access: yes, 2008
We use Heegaard Floer homology to obtain bounds on unknotting numbers. This is a generalisation of Ozsváth and Szabó's obstruction to unknotting number one.
Owens, Brendan, Brendan Owens, Owens, B.
core   +1 more source

Connectivity reveals homology between the visual systems of the human and macaque brains

open access: yesFrontiers in Neuroscience, 2023
The visual systems of humans and nonhuman primates share many similarities in both anatomical and functional organization. Understanding the homology and differences between the two systems can provide important insights into the neural basis of visual ...
Xia Lu   +7 more
doaj   +1 more source

The Hodge conjecture: The complications of understanding the shape of geometric spaces

open access: yesMètode Science Studies Journal: Annual Review, 2018
The Hodge conjecture is one of the seven millennium problems, and is framed within differential geometry and algebraic geometry. It was proposed by William Hodge in 1950 and is currently a stimulus for the development of several theories based on ...
Vicente Muñoz Velázquez
doaj   +1 more source

Evolution, Homology, and Development of Tetrapod Limb Muscles

open access: yesDiversity, 2021
Since the early 1900s, researchers have attempted to unravel the origin and evolution of tetrapod limb muscles using a combination of comparative anatomy, phylogeny, and development.
Julia L. Molnar, Rui Diogo
doaj   +1 more source

Symmetric Homology is Representation Homology

open access: yes, 2022
Symmetric homology is a natural generalization of cyclic homology, in which symmetric groups play the role of cyclic groups. In the case of associative algebras, the symmetric homology theory was introduced by Z. Fiedorowicz \cite{F} and was further developed in the work of S. Ault \cite{Au1, Au2}. In this paper, we show that, for algebras defined over
Berest, Yuri, Ramadoss, Ajay C.
openaire   +2 more sources

Deteksi dan Identifikasi Nematoda Puru Akar (Meloidogyne spp.) pada Tanaman Bit Menggunakan Metode DNA Barcoding

open access: yesJurnal Fitopatologi Indonesia, 2020
Identifikasi nematoda berdasarkan karakter morfologi memerluan ketelitian tinggi dan perlu didukung hasil identifikasi secara molekuler. Salah satu metode identifikasi molekuler ialah dengan DNA barcode.
Ni Wayan Kartika Pratiwi   +3 more
doaj   +1 more source

Homological descent for motivic homology theories [PDF]

open access: yesHomology, Homotopy and Applications, 2014
We show that motivic homology, motivic Borel-Moore homology and higher Chow groups satisfy homological descent for hyperenvelopes, and l-hyperenvelopes after inverting l.
openaire   +3 more sources

Bikei homology [PDF]

open access: yesHomology, Homotopy and Applications, 2017
12 pages; revised version incorporates suggestions from referee.
Nelson, Sam, Rosenfield, Jake
openaire   +3 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

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