Results 11 to 20 of about 373,225 (307)

Política Externa Independente e a institucionalização das atividades espaciais no Brasil: histórias cruzadas

open access: yesCarta Internacional, 2017
O primeiro país a se lançar ao cosmos foi a União Soviética, ao lançar o satélite Sputnik I, em 1957. A partir de então, o espaço se tornou a nova fronteira para a projeção de prestígio nacional e poderio dos Estados, principalmente EUA e URSS ...
Renata Corrêa Ribeiro
doaj   +1 more source

Simple Modifications of Branched PEI Lead to Highly Efficient siRNA Carriers with Low Toxicity [PDF]

open access: yes, 2008
Polymer carriers like PEI which proved their efficiency in DNA delivery were found to be far less effective for the applications with siRNA. In the current study, we generated a number of nontoxic derivates of branched PEI through modification of amines ...
Zintchenko, Arkadi   +3 more
core   +1 more source

Plan estratégico de tecnologías de la información orientado al éxito de proyectos en instituciones de educación superior

open access: yesYachay, 2019
Las instituciones de educación superior ―al igual que cualquier organización― necesitan de gestión estratégica de tecnologías de la información, la que permita alinear sus proyectos tecnológicos hacia el logro de los objetivos institucionales (Hinojo ...
VANESSA MARIBEL CHOQUE
doaj   +3 more sources

A new strategy for stem cells therapy for erectile dysfunction: Adipose-derived stem cells transfect Neuregulin-1 gene through superparamagnetic iron oxide nanoparticles [PDF]

open access: yesInvestigative and Clinical Urology, 2022
Purpose: Our previous studies showed that nanotechnology improves derived adipose-derived stem cells (ADSCs) therapy for erectile dysfunction (ED). In this study, the Neuregulin-1(NRG1) gene was transfected into ADSCs with superparamagnetic iron oxide ...
Jianxing Cheng   +5 more
doaj   +1 more source

Co-assembly of graphene/polyoxometalate films for highly electrocatalytic and sensing hydroperoxide

open access: yesFrontiers in Chemistry, 2023
Graphene oxide (GO) films mixed with polyethylenimine (PEI) were prepared by a layer-by-layer assembly (LBL) method, in which the GO component is then converted to reduced GO (rGO) in situ through an electron transfer interaction with a polyoxometalate ...
Yayan Bao   +8 more
doaj   +1 more source

Physically and Chemically Crosslinked, Tannic Acid Embedded Linear PEI-Based Hydrogels and Cryogels with Natural Antibacterial and Antioxidant Properties

open access: yesBiomedicines, 2023
Linear polyethyleneimine (L-PEI) was obtained from the acidic hydrolysis of poly(2-ethyl-2-oxazoline) and employed in the synthesis of physically crosslinked L-PEI hydrogel, PC-L-PEIH, chemically crosslinked L-PEI hydrogel, CC-L-PEIH, and cryogels, CC-L ...
Mehtap Sahiner   +3 more
doaj   +1 more source

LAMP-LFD Based on Isothermal Amplification of Multicopy Gene ORF160b: Applicability for Highly Sensitive Low-Tech Screening of Allergenic Soybean (Glycine max) in Food

open access: yesFoods, 2020
Soybean (Glycine max) allergy can be life threatening. A lack of causative immunotherapy of soybean allergy makes soybean avoidance indispensable. Detection methods are essential to verify allergen labeling and unintentional allergen cross contact during
Stefanie M. Allgöwer   +6 more
doaj   +1 more source

La efectividad del Programa de Estímulos a la Innovación (PEI) en Sonora. ¿Qué factores influyen en el impacto del programa Rodríguez sobre la innovación y la competitividad de las empresas?

open access: yesEstudios Sociales, 2019
Objetivo: El estudio examina los impactos del PEI en el estado de Sonora, México, mediante el diseño de un modelo que permite evaluar el peso moderador de factores relacionados con las características de las empresas y las características del proyecto ...
Cristóbal Dávila-Borbón   +2 more
doaj   +1 more source

The Development of Highly Specific and Sensitive Primers for the Detection of Potentially Allergenic Soybean (Glycine max) Using Loop-Mediated Isothermal Amplification Combined with Lateral Flow Dipstick (LAMP-LFD)

open access: yesFoods, 2020
The soybean (Glycine max) has been recognized as a frequent elicitor of food allergy worldwide. A lack of causative immunotherapy of soybean allergy makes soybean avoidance essential.
Stefanie M. Allgöwer   +2 more
doaj   +1 more source

The cytotoxicity of OTMCS-PEI-R18.

open access: yes, 2016
(A) Degradation of OTMCS-PEI-R18. (B) Cytotoxicity of OTMCS-PEI-R18 and other PEI derivates at various concentrations in Hela cell line using the MTT assay. OTMCS-PEI-R13, OTMCS-PEI and PEI 25 KDa were used as controls.
Yuan Mao (403724)   +6 more
core   +1 more source

Home - About - Disclaimer - Privacy