Results 41 to 50 of about 432,216 (161)

Software educativo en la supervisión de la Química Inorgánica II

open access: yesEducación Química
Se dice que la Química es una ciencia abstracta, y para demostrar sus conceptos es necesario usar esquemas y representaciones, y todavía es considerada difícil de entender por muchos estudiantes.
Antônio Rony da Silva Pereira Rodrigues
doaj   +1 more source

Síntese e emprego do [Pd(dmba)(NCO)(PPh 3 )] em processos catalíticos envolvendo a preparação de derivados da uréia e de alcoxicarbonil complexos

open access: yesEclética Química, 2018
Este trabalho trata do emprego do ciclometalado [Pd(dmba) (NCO)(PPh 3 )] (dmba = N,N- dimetilbenzilamina; PPh 3 = trifenilfosfina) em processos catalíticos em fase homogênea, envolvendo a reação entre p-toluidina e p-nitrotolueno, produzindo N,N’-bis(4 ...
V. A. de Lucca Neto   +4 more
doaj   +1 more source

[Introdução à química inorgânica]

open access: yes, 2009
As imagens estão desformatadas por não existir licença para as colocar nesta plataforma.Texto referente às aulas da licenciatura em Química à unidade curricular de Introdução à química Inorgânica leccionada em 2009/2010 e 2010 ...
Lima, Sílvia M. M. A. Pereira
core   +1 more source

Livro Didático: Análise e Compreensão na Abordagem sobre Compostos Inorgânicos

open access: yesConexões: Ciência e Tecnologia, 2018
O trabalho tem como objetivo analisar a abordagem do conteúdo de Compostos Inorgânicos nos livros didáticos de Química de duas editoras: Ática e AJS, comparando a forma de tratamento da temática nas obras analisadas e propõe uma discussão sobre o livro ...
João Gomes de Oliveira Neto   +6 more
doaj   +1 more source

Caderno de aulas práticas Química Geral e Inorgânica 2018-2019

open access: yes, 2018
Sebenta das Aulas Laboratoriais para disciplina de "Química Geral e Inorgânica" do ano lectivo 2018-2019info:eu-repo/semantics ...
Wang, Wenli, Rio, Carolina
core   +1 more source

Synergetic Combination of Carbon Xerogels, Graphene Oxide and nano‐ZnO for Aqueous and Organic Supercapacitors

open access: yesBatteries &Supercaps, Volume 8, Issue 3, March 2025.
This work proposes the synthesis of carbon‐based nanostructured materials obtained using ZnO as both nanos‐ template and catalysts simultaneously. During the synthesis, GO was used as a stabiliser, preventing the collapse of the 3D structure and improving its properties in terms of capacitance and surface area.
Rusbel Coneo‐Rodríguez   +5 more
wiley   +1 more source

Exploring the Boundaries of Aromaticity in Complex Structures and Excited States Through Computational Analysis

open access: yesChemistry – A European Journal, EarlyView.
Understanding aromaticity has evolved from benzene‐centric concepts to a broad multidimensional framework spanning organic, inorganic, and excited‐state systems. This review highlights ambiguities between magnetic, electronic, geometric, and energetic descriptors, emphasizing the need for unified, multi‐criteria approaches.
Sílvia Escayola   +2 more
wiley   +1 more source

Nematicidal Activity of the Essential Oils from (Rutaceae) Samples

open access: yesNatural Product Communications, 2006
The composition and nematicidal activity of the essential oils from the leaves of native and six cultivated varieties of P. microphyllus are reported. Twenty-nine compounds were identified (86.2% sesquiterpenes and 13.8% aliphatic ketones) of which (E ...
Nirla R. Romero   +9 more
doaj   +1 more source

Comparative study of experimental and computational procedures for the calculation of molecular lipophilicity

open access: yesSaúde & Tecnologia, 2015
Background – The lipophilicity is one of the physicochemical properties that most influences the ability of a molecule to move through biological compartments.
Gonçalo Clemente
doaj   +1 more source

An Analytical Design Model of a Vacuum Pressure Swing Adsorption Process for Biogas Upgrading

open access: yesChemie Ingenieur Technik, EarlyView.
A steady‐state model was developed for a vacuum pressure swing adsorption (VPSA) process comprising adsorption, depressurization, and evacuation steps. The resulting analytical plant design model provides the optimal adsorber height required to achieve a target product purity with maximum bed utilization.
Thomas Welter   +3 more
wiley   +1 more source

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