Results 31 to 40 of about 5,172,925 (243)
EnergiesDuring the drilling of deep ice boreholes in Central Antarctica, one of the key tasks is to collect representative samples of the borehole fluid. The principal challenge is that, during retrieval of the downhole sampler to the surface, the sample is ...
Sergey Ignatiev +2 more
doaj +1 more source
Penggunaan Etnomatematika Pada Batik Paoman Dalam Pembelajaran Geomteri Bidang di Sekolah Dasar
IndoMath, 2018 This study aims to explore the ethnomatematics contained in Batik Paoman Indramayu and apply it to the learning of geometry field in elementary school. This research is a qualitative research with ethnography approach, where the data collection technique
Sudirman Sudirman +2 more
doaj +1 more source
Covariant Space-Time Line Elements in the Friedmann–Lemaitre–Robertson–Walker Geometry
Axioms, 2022 Most quantum gravity theories quantize space-time on the order of Planck length (ℓp ). Some of these theories, such as loop quantum gravity (LQG), predict that this discreetness could be manifested through Lorentz invariance violations (LIV) over ...
David Escors, Grazyna Kochan
doaj +1 more source
Multicolored lines in a finite geometry
Discrete Mathematics, 1988 Let P be a set of points, partitioned into blocks \(P_ 1,...,P_ t\), and let \underbar{L} be a set of lines (subsets of P) satisfying the following conditions: (i) each line intersects at least two of the blocks (ii) any two points in distinct blocks are on a unique line (iii) any two points in the same block are on at most one line.
Zoltán Füredi, Ivo G. Rosenberg
openaire +1 more source
A sketching interface for 3D modeling of polyhedron [PDF]
, 2006 We present an intuitive and interactive freehand sketching interface for 3D polyhedrons reconstruction. The interface mimics sketching with pencil on paper and takes freehand sketches as input directly.
Wright, David +8 more
core +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
Applications of Euclidean Geometry: The Elastic Line Concept [PDF]
In classical Euclidean geometry, a straight line is regarded as a rigid, immutable, and infinitely extendable entity. However, in phys- ical, informational, and phenomenological contexts, the notion of a line often deviates from this rigid abstraction ...
Nemoto, Ryusho
core +3 more sources
Interpretation of overtracing freehand sketching for geometric shapes [PDF]
, 2006 This paper presents a novel method for interpreting overtracing freehand sketch. The overtracing strokes are interpreted as sketch content and are used to generate 2D geometric primitives.
Qin, SF, Wright, DK, Ku, DC
core +4 more sources
Algorithmic Modified Denavit–Hartenberg Modeling for Robotic Manipulators Using Line Geometry
Applied SciencesThis paper proposes a kinematic modeling method for robotic manipulators by extracting the modified Denavit–Hartenberg (MDH) parameters using line geometry.
Minchang Sung, Youngjin Choi
doaj +1 more source
Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation
FEBS Letters, EarlyView.Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang +2 more
wiley +1 more source