Results 71 to 80 of about 5,329,946 (348)

Challenges to Implementing Regional Ocean Governance in the Wider Caribbean Region

open access: yesFrontiers in Marine Science, 2021
For over two decades, the countries, subregional and regional level intergovernmental organizations in the Wider Caribbean Region (WCR) have been engaged in an initiative to implement a regional governance approach for managing the shared living marine ...
Lucia Fanning   +11 more
doaj   +1 more source

Constraints on $AdS_5$ Embeddings [PDF]

open access: yes, 2000
We show that the embedding of either a static or a time dependent maximally 3-symmetric brane with non-zero spatial curvature $k$ into a non-compactified $AdS_5$ bulk does not yield exponential suppression of the geometry away from the brane ...
C. Csaki   +13 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Phytochemical composition, antioxidant potential, and insecticidal activity of Moringa oleifera extracts against Tribolium castaneum: a sustainable approach to pest management

open access: yesBMC Plant Biology
Moringa oleifera’s rich phytochemical profile positions it as a promising natural alternative for sustainable pest management. This study characterizes the phytochemical composition and antioxidant activity of M. oleifera extracts and, for the first time,
Ben Khedher Ghada   +9 more
doaj   +1 more source

Structural synthesis of two-dof differential screw mechanism by the multi-body kinematics

open access: yesNihon Kikai Gakkai ronbunshu, 2020
A novel structural synthesis of a mechanism based on the multibody kinematics is proposed in this paper. Instead of the degree-of-freedom analysis by the Grubler’s equation, numbers of the generalized coordinates and those of the constraint¨ equations ...
Takashi HARADA, Yuto NAKAMURA
doaj   +1 more source

Teaching Children’s Motor Skills for Team Games Through Guided Discovery: How Constraints Enhance Learning

open access: yesFrontiers in Psychology, 2021
In this paper we examine the role of instructional strategies as constraints within a discovery learning framework for the teaching of open skill team ball games to elementary school-aged children.
Karl M. Newell, Inez Rovegno
doaj   +1 more source

Releasing aperture filter constraints [PDF]

open access: yes, 2007
Aperture filters are a recently introduced class of nonlinear filters used in image processing. In this paper we present a new approach for aperture filter design, improving operator performance with respect to the MSE measure by releasing some of the ...
Marshall, S.
core  

To Be or Not to Be ... a Global Constraint [PDF]

open access: yes, 2003
Constraint propagation is widely recognized as a fundamental reasoning component in constraint programming. In the last decade, the concept of "global constraint" has attracted significant attention, since it is critical to achieve reasonable pruning, and efficiency, in many applications.
Bessiere, Christian   +1 more
openaire   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Constrained Cubature Particle Filter for Vehicle Navigation

open access: yesSensors
In vehicle navigation, it is quite common that the dynamic system is subject to various constraints, which increases the difficulty in nonlinear filtering.
Li Xue, Yongmin Zhong, Yulan Han
doaj   +1 more source

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