scholarly journals Scale inhibition properties of metallic cations on CaCO3 formation using fast controlled precipitation and a scaling quartz microbalance

2019 ◽  
Vol 167 ◽  
pp. 113-121
Author(s):  
Manel Gritli ◽  
Hélène Cheap-Charpentier ◽  
Olivier Horner ◽  
Hubert Perrot ◽  
Yasser Ben Amor
Keyword(s):  
Quartz Microbalance ◽  
Scale Inhibition ◽  
Metallic Cations ◽  
Controlled Precipitation

A TEM investigation of a hyper-eutectic lead-tin alloy

1988 ◽  
Vol 46 ◽  
pp. 562-563
Author(s):  
John A. Sutliff
Keyword(s):  
Volume Diffusion ◽  
Eutectic Mixture ◽  
Precipitation Reaction ◽  
Directionally Solidified ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Diffusion Controlled ◽  
Discontinuous Precipitation Reaction ◽  
Controlled Precipitation

Near-eutectic Pb-Sn alloys are important solders used by the electronics industry. In these solders, the eutectic mixture, which solidifies last, is the important microstructural consituent. The orientation relation (OR) between the eutectic phases has previously been determined for directionally solidified (DS) eutectic alloys using x-ray diffraction or electron chanelling techniques. In the present investigation the microstructure of a conventionally cast, hyper-eutectic Pb-Sn alloy was examined by transmission electron microscopy (TEM) and the OR between the eutectic phases was determined by electron diffraction. Precipitates of Sn in Pb were also observed and the OR determined. The same OR was found in both the eutectic and precipitation reacted materials. While the precipitation of Sn in Pb was previously shown to occur by a discontinuous precipitation reaction,3 the present work confirms a recent finding that volume diffusion controlled precipitation can also occur.Samples that are representative of the solder's cast microstructure are difficult to prepare for TEM because the alloy is multiphase and the phases are soft.

SILICA GEL MODIFIED WITH AMINO IMINE GROUPS AS AN ADSORBENT FOR METALLIC CATIONS

2017 ◽  
Vol 16 (1) ◽  
pp. 213-224
Author(s):  
Maria Gardennia Fonseca ◽  
Franklin Pessoa Aguiar ◽  
Jose Geraldo Paiva Espinola ◽  
Luiza Nobuko Hirota Arakaki ◽  
Ercules Epaminondas Sousa Teotonio ◽  
...  
Keyword(s):  
Silica Gel ◽  
Metallic Cations

S-doped CoMn2O4 with more high valence metallic cations and oxygen defects for zinc-air batteries

2021 ◽  
Vol 491 ◽  
pp. 229584
Author(s):  
Zhengmei Zhang ◽  
Huina Sun ◽  
Junfu Li ◽  
Zhenhua Shi ◽  
Manhong Fan ◽  
...  
Keyword(s):  
Oxygen Defects ◽  
Metallic Cations ◽  
Zinc Air Batteries

scholarly journals Morphology-Controlled Precipitation of Cerium Oxalate Crystals: The Effect of Water in Nanostructured Solvents

2021 ◽  
Author(s):  
Irma Liascukiene ◽  
Marie Jehannin ◽  
Joseph Lautru ◽  
Renaud Podor ◽  
Sophie Charton ◽  
...  
Keyword(s):  
Effect Of Water ◽  
Oxalate Crystals ◽  
Cerium Oxalate ◽  
Controlled Precipitation

ZIF-8@s-EPS as a novel hydrophilic multifunctional biomaterial for efficient scale inhibition, antibacterial and antifouling in water treatment

2021 ◽  
Vol 773 ◽  
pp. 145706
Author(s):  
Rui-Xia Gao ◽  
Yan Li ◽  
Ting-Ting Zhu ◽  
Yi-Xiu Dai ◽  
Xiao-Hong Li ◽  
...  
Keyword(s):  
Water Treatment ◽  
Scale Inhibition

scholarly journals A new approach about the digestion of fibers by ruminants

2013 ◽  
Vol 14 (2) ◽  
pp. 382-395 ◽  
Author(s):  
Leonardo Marmo Moreira ◽  
Fernando de Paula Leonel ◽  
Ricardo Augusto Mendonça Vieira ◽  
José Carlos Pereira
Keyword(s):  
Relevant Literature ◽  
Decisive Role ◽  
Supramolecular Systems ◽  
Animal Science ◽  
New Approach ◽  
Feed Resources ◽  
Stable Clusters ◽  
Metallic Cations ◽  
Animal Sciences

The decisive role of metallic cations in the formation of supramolecular clusters involving lignin, cellulose, and hemi-cellulose and its relationship to energy losses in ruminants associated with fibrous feed resources is still not well understood. Indeed, interactions between lignin, cellulose and metallic cations generate highly stable clusters that significantly decrease the capability of cellulase to break bonds between sugar units in order to facilitate the absorption of a great quantity of cellulose, which is ingested by ruminants as forage. Furthermore, several metallic cations cannot be absorbed as a consequence of the formation of coordinated ligations with the oxygen atoms of the lignocellulosic cluster. The loss of lignocellulose-metal clusters by ruminants is responsible for a substantial waste of nutrients, which is a significant problem in animal science. Moreover, the chemical structure of these relevant supramolecular systems is poorly understood. In the present review, we discussed this topic in detail in reference to relevant literature from the chemical and animal sciences in order to analyze the perspectives associated with the improvement of nutritional absorption from feed resources by ruminants.

Controlled precipitation for enhanced dissolution rate of flurbiprofen: development of rapidly disintegrating tablets

2017 ◽  
Vol 43 (9) ◽  
pp. 1430-1439 ◽  
Author(s):  
Ebtessam A. Essa ◽  
Amira O. Elmarakby ◽  
Ahmed M. A. Donia ◽  
Gamal M. El Maghraby
Keyword(s):  
Dissolution Rate ◽  
Enhanced Dissolution ◽  
Controlled Precipitation
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