Results 91 to 100 of about 167,464,841 (288)
Codimension in planar polynomial differential systems
Electronic Journal of Differential EquationsThe topological classification of large families of polynomial differential systems remains an extremely difficult problem. Even for the simplest nonlinear case, the quadratic systems, this problem is still open.
Joan C. Artes +3 more
doaj
Supersymmetric smooth distributions of M2-branes as AdS solitons
Journal of High Energy PhysicsWe show that the singularities of certain distributions of M2-branes can be removed by adding a Wilson loop around a compact direction along the brane.
A. Anabalón +3 more
doaj +1 more source
FEBS Letters, EarlyView.Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise +5 more
wiley +1 more source
Design and Kinematics Performance Analysis of an Equivalent 3-P
Jixie chuandong, 2020 In order to meet the requirements of the configuration innovation of the multi-axis linkage processing platform， a new type of 2R1T 3-PzPxS parallel mechanism is synthesized， which contains a planar pantograph structure unit in the branching chain.
Yeping Lü +4 more
doaj
The ubiquitin system in normal and infected germinal center B cells
FEBS Letters, EarlyView.The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis +2 more
wiley +1 more source
Robust Control for High-Speed Visual Servoing Applications
International Journal of Advanced Robotic Systems, 2007 This paper presents a new control scheme for visual servoing applications. The approach employs quadratic optimization, and explicitly handles both joint position, velocity and acceleration limits.
Lars-Peter Ellekilde +3 more
doaj +1 more source
Metastatic niche shaped by host factors influences disseminated cancer cell fate
FEBS Letters, EarlyView.Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward +2 more
wiley +1 more source
Parallel Transport Frame for Fiber Shape Sensing
IEEE Photonics Journal, 2018 This paper reports a reconstruction method to determine a 3-D space curve from the distributed strain by using the parallel transport frame. Parallel transport frame can efficiently eliminate the singularities and discontinuous point which appear in ...
Jiwen Cui +3 more
doaj +1 more source
The optical singularities of birefringent dichroic chiral crystals
, 2003 Using a new formalism involving projection from the sphere of directions to the stereographic plane, and associated complex variables, explicit formulae are obtained for the two refractive indices and polarizations in optically anisotropic crystals that ...
Dennis, MR +7 more
core +1 more source
Deformations of functions and F-manifolds [PDF]
, 2004 We study deformations of functions on isolated singularities. A unified proof of the equality of Milnor and Tjurina numbers for functions on isolated complete intersections singularities and space curves is given.
De Gregorio, Ignacio +1 more
core +1 more source