Results 41 to 50 of about 519,357 (265)

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan   +6 more
wiley   +1 more source

El río de cacao y el negreamiento de Abiayala

open access: yesTrenzar, 2022
Desde el hogar hasta el colegio, el racismo antinegro toma lugar en la socialización de la juventud del Caribe colombiano. Empezando con la poesía desplazada de una abuela robada, y pasando por una leyenda hecha currículo escolar, este ensayo construye ...
Ligia López López
doaj  

La ciudad intermedia. Nodo articulador para la planificación y el ordenamiento territorial en el Caribe

open access: yesArquitectura +, 2019
Desarrollar la ciudad es una acción relevante para la política de regionalización autonómica que demanda cada nación frente a los nuevos paradigmas económicos y urbanos de la planificación y ordenamiento territorial.
Alfredo Otero
doaj   +1 more source

Clinical characteristics associated with the finding of thyroid cancer originating from hot nodules in patients with hyperthyroidism: a case report and systematic review of the literature

open access: yesRevista Colombiana de Cirugía, 2021
Coexistence between thyroid cancer and hyperthyroidism is rare, and most of the nodular lesions from which a malignant tumor is documented in this group of patients correspond to cold nodules.
Carlos Osorio   +10 more
doaj   +1 more source

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

open access: yesAdvanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon   +4 more
wiley   +1 more source

CFD MODELING OF MICROCHANNELS COOLING FOR ELECTRONIC MICRODEVICES

open access: yesInternational Islamic University Malaysia Engineering Journal, 2022
A simulation of the cooling of electronic devices was carried out by means of microchannels, using water as a coolant to dissipate the heat generated from a computer processor, and thus stabilize its optimum operating temperature.
Jonathan Fábregas   +7 more
doaj   +1 more source

Efecto del aceite esencial de Minthostachys verticillata sobre la respuesta inmune de pacientes alérgicos a ácaros del polvo [PDF]

open access: yes, 2009
El aceite esencial de hojas de M. verticillata fue obtenido por destilación en corriente de vapor y analizado por cromatografía gaseosa. Células mononucleares de sangre periférica de pacientes alérgicos, fueron estimuladas con aceite esencial.
Andrada, Melisa   +6 more
core  

Complex of primary and secondary parasitoids (Hymenoptera: Encyrtidae and Signiphoridae) of Hypogeococcus spp. Mealybugs (Hemiptera: Pseudococcidae) in the New World [PDF]

open access: yes, 2018
Se informan los resultados de los relevamientos de los parasitoides primarios y secundarios (hiperparasitoides) de Hypogeococcus spp. (Hemiptera: Pseudococcidae) realizados en el Nuevo Mundo durante el período 2009 para 2017 para obtener enemigos ...
Aguirre, María Belén   +6 more
core   +1 more source

Electrically Readable Lateral Flow Assay Using Organic Transistors for Diagnostic Applications

open access: yesAdvanced Materials, EarlyView.
Electrolyte‐gated organic field‐effect transistors (EGOFETs) are integrated with lateral flow (LF) paper fluidics to create a reusable, portable, and low‐cost point‐of‐care (PoC) diagnostic test. The devices are validated for Human Immunoglobulin G detection, achieving high sensitivity (0.1 fm), selectivity, and reproducibility with rapid results in 20–
María Jesús Ortiz‐Aguayo   +4 more
wiley   +1 more source

Ritos funerarios y experiencias de duelo en el pasado y durante la pandemia por COVID-19

open access: yesRevista Colombiana de Ciencias Sociales, 2023
Debido a las normas de bioseguridad, la pandemia del COVID-19 ha cambiado la manera en que los familiares y amigos asumen el duelo por la muerte de un ser querido, independientemente de la causa de la muerte.
Kelly Romero Acosta   +3 more
doaj   +1 more source

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