Results 101 to 110 of about 1,379,799 (331)
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
Un análisis de gradientes de composición química en la galaxia en función de nebulosas planetarias
, 2018 Se analiza una pequeña muestra de nebulosas planetarias de Tipo II, para estudiar los gradientes de abundancia radial y vertical en la Galaxia. Se obtienen gradientes de abundancia radial en He/H, 0IH, NIH y SIH, y gradientes de abundancia vertical en ...
Faúndez-Abans, Maximiliano +1 more
core
HoehneaAmostragens da regeneração natural e dos indivíduos provenientes de plantio efetuado com baixa diversidade, junto ao Rio Mogi-Guaçu, SP, Brasil, foram realizadas em módulos experimentais alocados num gradiente com diferentes distâncias de fragmento ...
Clarissa de Aquino +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
Acta Biológica Colombiana, 2002 En el Parque Nacional Natural Chingaza, Cundinamarca, sitio de la quebrada de Piedras Gordas y valles y laderas del río Tunjo, se realizó un estudio de la estructura de dos comunidades vegetales pertenecientes a las especies dominantes de Espeletia ...
Silvio Zuluaga Ramírez
doaj
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
Calidad del suelo de tres gradientes altitudinales con sistemas agroforestales de Coffea arabica (café) - Inga macrophylla (pacae) en Chontabamba, Perú [PDF]
A nivel mundial la producción de alimentos depende del recurso suelo, el mismo que se encuentra condicionado por diversos factores ambientales y antrópicos, cuyas consecuencias son la pérdida de fertilidad y calidad.
Guisado Lale, Marvin Gabriel
core +1 more source
Converting Level Set Gradients to Shape Gradients [PDF]
, 2010 The level set representation of shapes is useful for shape evolution and is widely used for the minimization of energies with respect to shapes. Many algorithms consider energies depending explicitly on the signed distance function (SDF) associated with a shape, and differentiate these energies with respect to the SDF directly in order to make the ...
Chen, Siqi +2 more
openaire +3 more sources
Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research
FEBS Letters, EarlyView.What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley +1 more source