Results 81 to 90 of about 664,776 (274)

Evaluación analítica para la determinación de sulfatos en aguas por método turbidimétrico modificado

Ingenierías USBMed, 2012
La meta de un análisis químico de aguas es generar resultados correctos y confiables, siendo la validación de ensayos uno de los aspectos más importantes para conseguir este propósito; además constituye un factor clave para la prestación de servicios ...
Carlos A. Severiche, Humberto González
doaj  

Empleo de las microalgas en la fijación del CO2 presente en los gases de chimenea de equipos industriales de combustión en Colombia

Iteckne, 2011
El dióxido de carbono es uno de los Gases Efecto Invernadero (GEI) que se genera debido a las diferentes actividades realizadas por las industrias, que incrementan su concentración en la atmosfera y contribuyen al calentamiento global. Las microalgas son
Andrea Paola Díaz Ovalle, Ricardo Restrepo Manrique   +1 more
doaj   +1 more source

Overcoming difficulties ESP students have in doing ESP tasks

European Journal of Literature and Linguistics, 2015
This paper is aimed at discussing the difficulties ESP students encounter when doing the assigned tasks. Some of the problems associated with this aspect are examined as well. A questionnaire done to first year students studying at the Faculty of Civil Engineering, Polytechnic University of Tirana, highlights how students prefer working when performing
openaire   +2 more sources

Imidazole Post‐Treated Self‐Assembled Monolayers for Inverted Perovskite Solar Cells

Advanced Science, EarlyView.
A post‐treatment strategy using imidazole derivatives (4,5‐DI and 4,5‐D‐2‐MI) enhances the Me‐4PACz/perovskite interface by improving wettability, promoting perovskite films, and optimizing energy level alignment, resulting in higher efficiency and improved stability in inverted perovskite solar cells.
Ihtesham Ghani, Shi Tingshu, Shehzad Ahmed, Zhuo Hongbin, Zhu Zirun, Yu Zhang, Peng You, Imran Muhammad, Tang Zeguo, Danish Khan   +9 more
wiley   +1 more source

Enhanced Preheating after Multi-Field Inflation: On the Importance of being Special

, 2012
We discuss preheating after multi-field inflation in the presence of several preheat matter fields that become light in the vicinity of (but not at) the inflatons' VEV, at distinct extra-species-points (ESP); this setup is motivated by inflationary ...
Battefeld, Thorsten, Eggemeier, Alexander, Giblin Jr, John T.   +2 more
core   +1 more source

Defect Engineering Activates Pyrene‐Based Covalent Organic Frameworks for Efficient Photocatalytic Uranium Capture

Advanced Science, EarlyView.
A defect‐engineered pyrene‐based covalent organic framework (TP‐PYTO‐SA) is developed via strategic salicylaldehyde incorporation. This approach simultaneously enhances hydrophilicity and introduces uranyl coordination sites, while optimized defect density significantly improves charge separation.
Weikun Yao, Guanbing Zhou, Tao Liu, Yihui Yuan, Hui Wang, Ning Wang   +5 more
wiley   +1 more source

Subtle morphological changes in the visual and antennal sensory system of bees and wasps across an urbanisation gradient

Scientific Reports
Increased temperature and fragmentation of green spaces in urban areas could drive variations in functional traits of insects. Such morphological shifts may occur for sensory systems, which were previously reported to be prone to change with habitat ...
Andrea Ferrari, Greta Tacconi, Carlo Polidori   +2 more
doaj   +1 more source

Achieving Chemical Accuracy in Cyclodextrin Host–Guest Binding via Integrative Atomistic Modelling

Advanced Science, EarlyView.
A generalizable computational framework is presented that overcomes long‐standing challenges in modelling cyclodextrin host‐guest binding by integrating host‐specific force‐field refinement, equilibrium enhanced sampling, nonequilibrium alchemical switching, convolution sampling of independent works, rigorous finite‐size corrections, and QM‐based ...
Xiaohui Wang, Linqiong Qiu, Hongyu Wang, Wenting Tang, Jiayang Leng, John Z. H. Zhang, Piero Procacci, Zhaoxi Sun   +7 more
wiley   +1 more source

Ansiedad, depresión y disfunción de la articulación temporomandibular

Multimed, 2018
RESUMEN La ansiedad y la depresión son trastornos del estado de ánimo que pueden influir en el adecuado funcionamiento del sistema estomatognático relacionándose con alteraciones a nivel de la articulación temporomandibular.
Yordany Arias Molina, Yosvany Herrero Solano, Yuleimy Cabrera Hernández, Carmen Sagué Larrea,, Liadna Lidey Almeida Villalobos   +4 more
doaj  

Synergistic Effects of Additive Engineering in Enhancing the Performance of Sn–Pb Perovskite Thin‐Film Transistors and Derived Logic Circuits

Advanced Science, EarlyView.
An additive engineering strategy employing 4,8‐dihydrobenzo[1,2‐b:4,5‐b′]dithiophen‐4,8‐dione (BDTD) is utilized to passivate bulk defects, regulate crystallization dynamics, and suppress Sn4+ formation in Sn–Pb perovskite thin‐film transistors. The incorporation of BDTD yields a substantial enhancement in electrical performance, increasing the hole ...
Zeeshan Alam Ansari, Abhishek Kumar, Soumallya Banerjee, Chintam Hanmandlu, Anjali Thakran, Yu‐Te Chen, Po‐Yu Yang, Shenghan Li, Chun‐Wei Pao, Yun‐Chorng Chang, Chu‐Chen Chueh, Chih‐Wei Chu   +11 more
wiley   +1 more source