Set Packing
Mostrando 13-24 de 33 artigos, teses e dissertações.
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13. Qualidade de goiabas ensacadas e manejadas com diferentes produtos fitossanitários, sob manejo orgânico / Quality of guava packed and managed using different phytosanitary products under organic management
Guava fruit culture presents serious phytosanitary problems usually controlled by the intensive use of chemicals, many of which have not been approved for this purpose. The growing and indiscriminate use of agro chemicals has put the health of consumers and farmers at risk, besides causing serious environmental problems. Faced by these facts, consumers have
Publicado em: 2006
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14. Modelamento matematico do processo de esterilização de alimentos condutivos em embalagem de vidro / Mathematical model of the process of conductive food sterilization in glass packing
The aim of this work was to build a mathematical model of the heat transfer during the sterilization process of a conductive baby food packed in glass container. The 3-dimensional model was built using the finite element technique. The model considered the thermal properties of food, glass, headspace and metal cap individually. The sample initial temperature
Publicado em: 2004
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15. Nanoparticulas de ouro passivadas com tiois : caracterização estrutural e formação de supercristais auto-organizados
Nanometer-sized particles (1-100 nm) have attracted great interest since their high surface-to-volume ratio may lead to novel physical and chemical attributes. In particular, they can be used as building blocks to produce ideal nanostructured solids (cluster-assembled materials ? CAMs), which involves three steps: synthesis, characterization of individual pr
Publicado em: 1999
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16. The crystal structure of a mutant protein with altered but improved hydrophobic core packing.
The dense packing observed in protein interiors appears to be crucial for stabilizing the native structure--even subtle internal substitutions are usually destabilizing. Thus, steric complementarity of core residues is thought to be an important criterion for "inverse folding" predictive methods, which judge whether a newly determined sequence is consistent
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17. Pterygopalatine ganglion cytology in monkeys.
By the use of dissection and of light and electron microscopy, the normal structure of the pterygopalatine ganglion was studied in cynomolgus and rhesus monkeys. A set of cytological features, namely, small cell size, close packing, peripheral distribution of Nissl bodies, eccentricity of the nucleus and rounded cell shape, was identified which may be unique
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18. DNA self-fitting: the double helix directs the geometry of its supramolecular assembly.
Groove-backbone interaction is a natural and biologically relevant mechanism for the specific assembly of B-DNA double helices. Crystal engineering and crystal packing analysis of oligonucleotides of different sizes and sequences reveal that the sequence-dependent self-fitting of B-DNA helices is a dominant constraint for their ordered assembly. It can overr
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19. Flexibility and packing in proteins
Structural flexibility is an essential attribute, without which few proteins could carry out their biological functions. Much information about protein flexibility has come from x-ray crystallography, in the form of atomic mean-square displacements (AMSDs) or B factors. Profiles showing the AMSD variation along the polypeptide chain are usually interpreted i
The National Academy of Sciences.
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20. Designability of α-helical proteins
A typical protein structure is a compact packing of connected α-helices and/or β-strands. We have developed a method for generating the ensemble of compact structures a given set of helices and strands can form. The method is tested on structures composed of four α-helices connected by short turns. All such natural four-helix bundles that are connected by
National Academy of Sciences.
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21. Solution structure and dynamics of a de novo designed three-helix bundle protein
Although de novo protein design is an important endeavor with implications for understanding protein folding, until now, structures have been determined for only a few 25- to 30-residue designed miniproteins. Here, the NMR solution structure of a complex 73-residue three-helix bundle protein, α3D, is reported. The structure of α3D was not based on any natu
The National Academy of Sciences.
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22. Crystal structure of a human CD3-ε/δ dimer in complex with a UCHT1 single-chain antibody fragment
The α/β T cell receptor complex transmits signals from MHC/peptide antigens through a set of constitutively associated signaling molecules, including CD3-ε/γ and CD3-ε/δ. We report the crystal structure at 1.9-Å resolution of a complex between a human CD3-ε/δ ectodomain heterodimer and a single-chain fragment of the UCHT1 antibody. CD3-ε/δ and CD3
National Academy of Sciences.
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23. Dynamic searching in the brain
Cognitive functions rely on the extensive use of information stored in the brain, and the searching for the relevant information for solving some problem is a very complex task. Human cognition largely uses biological search engines, and we assume that to study cognitive function we need to understand the way these brain search engines work. The approach we
Springer Netherlands.
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24. Fold prediction of helical proteins using torsion angle dynamics and predicted restraints
We describe a procedure for predicting the tertiary folds of α-helical proteins from their primary sequences. The central component of the procedure is a method for predicting interhelical contacts that is based on a helix-packing model. Instead of predicting the individual contacts, our method attempts to identify the entire patch of contacts that involve
The National Academy of Sciences.