Results 21 to 30 of about 4,974,460 (256)

ESTRUCTURA I PROPIETATS DELS MATERIALS PLÀSTICS (2n examen parcial)

open access: yes, 2021
Examen d'Estructura i propietats dels materials ...
Antunes, Marcelo de Sousa Pais
core  

Catalogació de l’impacte ambiental de plàstics. Materials convencionals [PDF]

open access: yes, 2015
Els plàstics són un tipus de materials que presenten múltiples aplicacions en diversos camps. Des del seu descobriment, la seva demanda no ha fet més que incrementar gràcies a les seves excel·lents propietats.
Miernau Raurell, Mònica
core   +1 more source

ESTRUCTURA I PROPIETATS DELS MATERIALS PLÀSTICS (1r examen parcial)

open access: yes, 2021
Examen de Estructura i propietats dels materials ...
Antunes, Marcelo de Sousa Pais
core  

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Conservation of Plastics (materials science, degradation and preservation)

open access: yesGe-conservación, 2011
Reseña del libro: Conservation of Plastics (materials science, degradation and preservation) Yvonne Shashoua Butterworth – Heinemann Oxford, 2008 285 páginas más 14 páginas introductorias, ilustraciones, tablas, esquemas, 195 x 250 cm ...
Margarita San Andrés Moya
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS 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

Position Paper: the Sustainability of Plastics

open access: yesChemical Engineering Transactions, 2023
The unique properties and performance of plastic materials entail their massive production and use with consequently generation of huge amount of plastic waste, which can cause significant impact on the environment, if not properly managed. Institutional
Daniele Antonini   +8 more
doaj  

Plastics in the US: toward a material flow characterization of production, markets and end of life

open access: yesEnvironmental Research Letters, 2020
Managing plastics has become a focal issue of the Anthropocene. Developments in plastic materials have made possible many of the technologies and conveniences that define our modern life.
Martin C Heller   +2 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Biodegradation of plastics at home composting conditions

open access: yesEnvironmental Challenges, 2022
Plastics have become an ever-increasing environmental pollution problem since high amounts of them are dumped every year into the environment. To remediate this problem, many proposals attempt to produce new plastics with the same sound characteristics ...
Godofredo Solano   +4 more
doaj   +1 more source

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