Results 91 to 100 of about 13,758 (258)

Evasión del impuesto al valor agregado en Colombia [PDF]

, 2017
Trabajo de InvestigaciónEn este trabajo se realiza un acercamiento al tema de la evasión en Colombia. Se exponen las definiciones de los conceptos básicos tributarios; posteriormente se presentan las causas de la evasión y elusión en el país.
Castañeda-Bautista, Edgar Oswaldo, Lambis-Espinal, María Camila   +1 more
core  

Solid‐Like yet Reconfigurable 3D‐Printed Liquid Tubular Wires From Nonconductive Molecules

Advanced Science, EarlyView.
This work shatters the current reliance of liquid electronics on intrinsically conductive materials by introducing a novel interfacial redox strategy that transforms non‐conductive molecules into high‐performance, 3D liquid tubular wires with solid‐like electrical properties and exceptional reconfigurability. It opens a vast design space for all‐liquid
Yuchen Fu, Weixi Wu, Wei Chen, Jiangang Zhang, Biyu Jin, Sai Zhao, Yu Chai   +6 more
wiley   +1 more source

Multiparametric Bioresorbable Sensor for Doxorubicin Detection via Molecularly Imprinted Synthetic Receptors

Advanced Science, EarlyView.
A biodegradable molecularly imprinted polymer porous silica sensor enables dual optical readout of doxorubicin via fluorescence and effective optical thickness shifts. The combined transduction mechanisms provide enhanced reliability and quantitative accuracy over clinically relevant concentrations, representing a step toward transient implantable ...
Martina Corsi, Tiziano Di Giulio, Eleonora Vandini, Muhammad Ibrar Asif, Eleonora Daini, Antonietta Vilella, Giuseppina Leo, Alessandra Ottani, Cosimino Malitesta, Daniela Giuliani, Elisabetta Mazzotta, Giuseppe Barillaro   +11 more
wiley   +1 more source

La moralidad ciudadana en el pago de impuestos: reto formativo en ética social para México [PDF]

, 2013
El pago de impuestos en cualquier economía se presenta con una actitud variada de parte del ciudadano que depende de diversos factores tanto externos como psicológicos y que ocasionan niveles de recaudación no esperados y diversos.
Hinojosa Cruz, Adriana Verónica
core  

Electrolyte‐Dependent Sodium Plating for Anode‐Free Na‐Ion Batteries Studied by Operando Optical Microscopy

Advanced Science, EarlyView.
Anode‐free sodium‐ion batteries are examined using carbonate‐, glyme‐, and localized high‐concentration electrolytes. Distinct sodium plating morphologies are identified by operando optical microscopy, revealing uniform crystalline deposition for glyme‐based systems.
Moritz Exner, Dominik Stepien, Annica I. Freytag, Pedro B. Groszewic, Xiangping Min, Nour Adrah, Peter Axmann, Philipp Adelhelm   +7 more
wiley   +1 more source

Synthesis of Conjugated Linear and Cyclic Polyynes by Selective Alkyne Metathesis

Angewandte Chemie, EarlyView.
The formation of polyynes with an odd number of conjugated triple bonds is challenging, particularly for complex architectures since most established methods rely on irreversible C–C bond‐forming reactions. To address this, we have developed the synthesis of triynes via alkyne metathesis.
Julien Escudero, Jonathan Long, Dylan Bouëtard, Jennifer Morvan, Mehdi Koohgard, Angelika Neitzel, Dirk Bockfeld, Shedrack Nwachukwu, Thierry Roisnel, Rik R. Tykwinski, Matthias Tamm, Marc Mauduit, Yann Trolez   +12 more
wiley   +2 more sources

PRINCIPALES REPERCUSIONES DE LA REFORMA TRIBUTARIA EN CHILE - MAIN IMPACT OF TAX REFORM IN CHILE

Visión de Futuro, 2019
El presente estudio tiene por objeto analizar la reforma tributaria y el cambio impositivo del impuesto a la renta, dado que toda reforma a un sistema tributario trae consigo efectos de carácter distributivos en la sociedad.
Oscar Alfredo Rojas Carrasco, Fernando Alejandro Herrera Ciudad, Albino Enzon Gonzalez Gonzalez   +2 more
doaj  

Reorganización empresarial y planificación tributaria [PDF]

, 2016
Este artículo presenta un estudio sobre la vinculación de la reorganización empresarial con la planificación tributaria, estableciendo, en general, los alcances de cada una de dichas instituciones, y, en particular, los posibles casos en que una ...
Faúndez Ugalde, Antonio
core   +1 more source

Organic Electrochemical Transistors and Foreign Body Reaction: First Steps Toward Long‐Term Implantable Biosensing

Advanced Electronic Materials, EarlyView.
Organic Electrochemical Transistors (OECT) have been applied as implanted sensors in recent years. However, Foreign Body Reaction (FBR) effects on OECT performance are still underexplored. Here, we analyze OECT operation when covered by FBR‐related proteins in an in vitro scenario.
Henrique Frulani de Paula Barbosa, Titinun Nuntapramote, Ankush Kumar, Sander van den Driesche, Michael J. Vellekoop, Dorothea Brüggemann, Björn Lüssem   +6 more
wiley   +1 more source

Bridged Pyrroloindole‐CAYC‐Gold Complexes: Harnessing Weak Secondary Intramolecular Au···H−C(sp3) Interactions in Gold(I) Catalysis

Angewandte Chemie, EarlyView.
We present a new class of electronically and sterically hindered N‐heterocyclic carbenes, referred to as bridged cyclic (amino)ylide carbene (bCAYC), where 9H‐pyrrolo[1,2‐a]indole acted as carbene core and diaryl sulfonium as ylide partner. Corresponding bCAYC‐Au(I) exhibits a weak secondary intramolecular Au···H−C(sp3) interaction as a secondary ...
Sourav Sekhar Bera, Anurag Kumar, Pengcheng Gao, Sanghamitra Das, Roger Lalancette, Roman Szostak, Michal Szostak   +6 more
wiley   +2 more sources