Results 51 to 60 of about 307,157 (265)

El concepto de homología filogenética y la selección de caracteres taxonómicos

open access: yesBotan‪ical Sciences, 1996
The practical problem of selecting taxonomic characters not only requires an extensive empirical basis. It also demands an examination of theories and epistemological principles behind character analysis.
Efraín de Luna, Brenth D. Mishler
doaj   +1 more source

Default Mode Network Analysis of APOE Genotype in Cognitively Unimpaired Subjects Based on Persistent Homology

open access: yesFrontiers in Aging Neuroscience, 2020
Current researches on default mode network (DMN) in normal elderly have mainly focused on finding some dysfunctional areas with decreased or increased connectivity. The global network dynamics of apolipoprotein E (APOE) e4 allele group is rarely studied.
Liqun Kuang   +6 more
doaj   +1 more source

MITF maintains genome stability in nonmelanocyte lineages

open access: yesMolecular Oncology, EarlyView.
MITF is essential for melanocyte survival and acts as an oncogene in 10%–20% of melanomas. We show that MITF depletion causes genome instability in nonmelanocytic cells, leading to LATS2‐mediated P53 activation, cell cycle arrest, and apoptosis. This study highlights the role of MITF as a genome maintenance factor beyond the melanocyte lineage. Created
Drifa H. Gudmundsdottir   +13 more
wiley   +1 more source

Unraveling chaos: A topological analysis of simplicial homology groups and their foldings

open access: yesOpen Mathematics
In this article, we introduce a new type of simplicial homology group called the chaotic simplicial homology group. We construct the structure of this group and obtain some types of conditional foldings and unfoldings restricted to the elements of the ...
Abu-Saleem Mohammed
doaj   +1 more source

Pirashvili–Richter-type theorems for the reflexive and dihedral homology theories

open access: yesComptes Rendus. Mathématique
Reflexive homology and dihedral homology are the homology theories associated to the reflexive and dihedral crossed simplicial groups respectively. The former has recently been shown to capture interesting information about $C_2$-equivariant homotopy ...
Graves, Daniel
doaj   +1 more source

Adaptive Discrete Vector Field in Sensor Networks

open access: yesSensors, 2018
Homology groups are a prime tool for measuring the connectivity of a network, and their computation in a distributed and adaptive way is mandatory for their use in sensor networks.
Mengyi Zhang, Alban Goupil
doaj   +1 more source

Novel Variants of Citrus Viroid-III in Fars Province [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2011
Citrus viroid-III (CVd-III) has narrow host range and induces specific symptoms on Etrog citron consist of petiole wrinkle and browning plus leaf twist, leaf droop and bent leaf induced by point necroses of the mid vein.
Aliakbar Bagherian   +1 more
doaj   +1 more source

Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization

open access: yesMolecular Oncology, EarlyView.
In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu   +13 more
wiley   +1 more source

Topological analysis of number theory and its applications in quantum cryptography [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
This study investigates the application of algebraic topology, in particular homology theory and persistent homology. It includes the analysis of elliptic curves and their use in cryptographic systems and cybersecurity.
Noor Kadhim, Ruaa Abd, Saja AL-Khafaji
doaj   +1 more source

Inhibition of cyclin‐dependent kinases 12/13 using CT7439 as a treatment for colorectal cancer with CDK12 upregulation

open access: yesMolecular Oncology, EarlyView.
The proposed mechanism of action for the CDK12/13 inhibitor and cyclin K degrader, CT7439. CDK12/13 inhibition interrupts transcription elongation, leading to increased DNA damage that results in cell death. This agent is a potentially novel treatment option for patients with colorectal cancer. Created in BioRender. Cyclin‐dependent kinase (CDK) 12 and
Wylie K. Watlington   +10 more
wiley   +1 more source

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