Results 91 to 100 of about 6,237 (218)

Thorium Recovery with Crown Ether–Polymer Composite Membranes

Applied Sciences
Thorium is a weak radioactive element, but the control of its concentration in natural aqueous systems is of great interest for health, because it is a toxic heavy metal.
Aurelia Cristina Nechifor, Paul Constantin Albu, Ludmila Motelica, Geani Teodor Man, Alexandra Raluca Grosu, Szidonia-Katalin Tanczos, Vlad-Alexandru Grosu, Virgil Emanuel Marinescu, Gheorghe Nechifor   +8 more
doaj   +1 more source

Inter-matrix synthesis of polymer stabilised metal nanoparticles for sensor applications [PDF]

, 2005
Les partícules metàl·liques de mida nanomètrica o Metal NanoParticles (MNP) són objecte de gran interès en la recerca química actual a causa de les seves especials propietats elèctriques, magnètiques i òptiques, entre d'altres, que són diferents de les ...
Muraviev, Dimitri N.
core  

Sintesis dan Karakterisasi Membran Elektrolit Polieter-eter Keton Tersulfonasi [PDF]

, 2007
SINTESIS DAN KARAKTERISASI MEMBRAN ELEKTROLIT POLIETER-ETER KETON TERSULFONASI. Membran elektrolit untuk aplikasi sel bahan bakar metanol langsung, Direct Methanol Fuel Cell (DMFC) berfungsi untuk menghantarkan ion (proton) dan pembatas antara anoda dan ...
Dewi, E. L. (Eniya), Handayani, S. (Sri), Purwanto, W. W. (Widodo), Soemanto, R. W. (Roekmijati)   +3 more
core  

Enhanced Electrochemical Detection of Heavy Metal Ions Using TPyP‐sPEEK Composite‐Modified Electrodes

ChemElectroChem
Porphyrin/sulphonated polyetheretherketone (sPEEK) composites are successfully obtained at different dye/polymer weight/weight percentage taking advantage of electrostatic interactions among the protonable nitrogen atoms of 5,10,15,20‐tetrakis(4‐pyridyl)‐
Viviana Bressi, Claudia Espro, Alessandra Carbone, Claudia Granata, Angelo Ferlazzo, Kaveh Moulaee, Mariachiara Trapani, Maria Angela Castriciano, Giovanni Neri   +8 more
doaj   +1 more source

A low-speed BIST framework for high-performance circuit testing [PDF]

, 2000
Testing of high performance integrated circuits is becoming increasingly a challenging task owing to high clock frequencies. Often testers are not able to test such devices due to their limited high frequency capabilities.
Kerkhoff, H.G., Sachdev, M., Shashaani, M., Speek, H.   +3 more
core   +1 more source

Optimization of sPEEK/S-TiO2 nanocomposite membranes using response surface methodology for low-temperature fuel cell

Results in Engineering
Polyether-ether-ketone (PEEK), a speciality thermoplastic polymer is treated with concentrated sulfuric acid to introduce sulfonated repeating units in its backbone.
Mawlood Maajal Ali, Ali Basem, Anmar Sh Jasim, Dheyaa J. Jasim, Ameer Azam, S.J.A. Rizvi, Yusra A. AlBahadli, Maryam Hussein Abdulameer   +7 more
doaj   +1 more source

Proton Değişim Membranı olarak SPEEK-PVA ve SPEEK-PVA-Borik Asit Karışım Membranlar üzerine TEOS Katkısının Etkisi

Van Yüzüncü Yıl Üniversitesi Mühendislik Fakültesi Dergisi, 2023
Bu çalışmada, proton değişim membranı olarak farklı kütlesel yüzdelerde (%1, %3 ve %5) TEOS katkılı SPEEK-PVA ve SPEEK-PVA-borik asit karışım membranları çözelti döküm yöntemiyle sentezlenmiştir.
Alpay Şahin, İrfan Ar, Yavuz Yağızatlı   +2 more
doaj  

Pengaruh Silikapadamembran Elektrolit Berbasis Polieter Eter Keton [PDF]

, 1994
PENGARUH SILIKAPADAMEMBRAN ELEKTROLIT BERBASIS POLIETER ETER KETON. Sel bahan bakar telah dikembangkan sebagai pengkonversi energi alternatif. Nafion adalah membran terflorinasi yang secara intensif telah digunakan pada Direct Methanol Fuel Cell (DMFC ...
Hartanto, S. (Singgih), Handayani, S. (Sri), Marlina, L. (Lin), Latifah, L. (Latifah)   +3 more
core  

A study of the performance of SPEEK electrolyte of a novel PEMFC

Materials Research Express
Abstract Analysis of performance of fuel cell is carried out by considering non-fluorinated electrolyte and variety of potential electrodes. The study spans low temperature regions and carried out MD investigation of transport of ions in a novel PEM fuel cell (PEMFC), which is composed of electrodes and SPEEK as a non-fluorinated ...
S S Awulachew, K N Nigussa
openaire   +2 more sources

Polymer blends of SPEEK for DMFC application at intermediate temperatures

International Journal of Hydrogen Energy, 2014
This research has been funded in the frame of Support Programme for Research and Development of the Polytechnic University of Valencia and the Ministry of Science and Innovation through the projects: 24761 and SP-ENE-20120718, respectively.
Sergio Mollá, Vicente Compañ
openaire   +3 more sources