Results 91 to 100 of about 7,797,471 (373)

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

open access: yesFEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel   +2 more
wiley   +1 more source

Approaches to conceptual clustering [PDF]

open access: yes, 1985
Methods for Conceptual Clustering may be explicated in two lights. Conceptual Clustering methods may be viewed as extensions to techniques of numerical taxonomy, a collection of methods developed by social and natural scientists for creating ...
Fisher, Douglas, Langley, Pat
core   +1 more source

The Fundamental Concepts of Classical Equilibrium Statistical Mechanics

open access: yes, 2003
A critical examination of some basic conceptual issues in classical statistical mechanics is attempted, with a view to understanding the origins, structure and statuts of that discipline.
Volchan, Sergio B.
core   +1 more source

Preservice elementary school teachers' knowledge of fractions: a mirror of students' knowledge? [PDF]

open access: yes, 2014
This research analyses preservice teachers' knowledge of fractions. Fractions are notoriously difficult for students to learn and for teachers to teach.
Desoete, Annemie   +3 more
core   +2 more sources

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

Black Deaths Matter: A Conceptual Framework for Understanding Racial Disparities in Relationship Loss and Health [PDF]

open access: yes, 2018
Black Americans tend to die at younger ages than white Americans. Black Americans are also more likely than white Americans to experience the premature death of mothers, fathers, siblings, children, and other relatives and friends.
Umberson, Debra
core   +1 more source

Inquiry-Scaffolding Learning Model: Its Effect on Critical Thinking Skills and Conceptual Understanding

open access: yesJurnal Ilmiah Pendidikan Fisika Al-Biruni, 2019
This study aimed to examine the effect of inquiry-scaffolding on critical thinking skills and conceptual understanding. The research design used was a mixed-method embedded experimental model. The samples were 64 students.
W. Wartono   +3 more
semanticscholar   +1 more source

Development of Ludo-Science Media with a Somatic Auditory Visual Intellectual (SAVI) Approach to Train the Activeness and Conceptual Understanding

open access: yesJurnal Penelitian dan Pembelajaran IPA, 2020
This study is aimed to develop an educational game media called ludo-science that is compiled with Somatic Auditory Visualization Intellectually (SAVI) approach which can be used to train the activeness and students' conceptual understanding.
Ramadhani Kasih Anggreini   +1 more
doaj   +1 more source

Effect of Jigsaw Strategy and Learning Style to Conceptual Understanding on Senior High School Students

open access: yesInternational Journal of Emerging Technologies in Learning (iJET), 2019
Conceptual understanding should have serious attention due to the low score of Physics subject on national examination in Palu. The difference between learning style and jigsaw strategy is able to combine abstract conceptualization and active experiment ...
A. Kade, I. Degeng, M. Ali
semanticscholar   +1 more source

MET variants with activating N‐lobe mutations identified in hereditary papillary renal cell carcinomas still require ligand stimulation

open access: yesMolecular Oncology, EarlyView.
MET variants in the N‐lobe of the kinase domain, found in hereditary papillary renal cell carcinoma, require ligand stimulation to promote cell transformation, in contrast to other RTK variants. This suggests that HGF expression in the microenvironment is important for tumor growth in such patients. Their sensitivity to MET inhibitors opens the way for
Célia Guérin   +14 more
wiley   +1 more source

Home - About - Disclaimer - Privacy