Effects of arsenic on the organic component of the algaDunaliella salina

1992 ◽  
Vol 6 (4) ◽  
pp. 357-362 ◽  
Author(s):  
Yukiho Yamaoka ◽  
Osamu Takimura ◽  
Hiroyuki Fuse ◽  
Kazuo Kamimura
Keyword(s):  
2021 ◽  
Author(s):  
Ferdinand Lédée ◽  
Pierre Audebert ◽  
Gaëlle Trippé-Allard ◽  
Laurent Galmiche ◽  
Damien Garrot ◽  
...  

We present the synthesis of two novel two-dimensional (2D) hybrid organic-inorganic halide perovskites incorporating for the first time 100% of a photoactive tetrazine derivative as the organic component. With this...


1993 ◽  
Vol 16 (10) ◽  
pp. 752-757
Author(s):  
Hideki TATSUMOTO ◽  
Miyuki ISHIBASHI ◽  
Chiho TAKIMOTO ◽  
Katsunori KIMIJIMA ◽  
Masami AIKAWA ◽  
...  

Gels ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 83 ◽  
Author(s):  
Christian Weinberger ◽  
Dirk Kuckling ◽  
Michael Tiemann

Organic polymer-hydrogels are known to be capable of directing the nucleation and growth of inorganic materials, such as silica, metal oxides, apatite or metal chalcogenides. This approach can be exploited in the synthesis of materials that exhibit defined nanoporosity. When the organic polymer-based hydrogel is incorporated in the inorganic product, a composite is formed from which the organic component may be selectively removed, yielding nanopores in the inorganic product. Such porogenic impact resembles the concept of using soft or hard templates for porous materials. This micro-review provides a survey of select examples from the literature.


Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 468 ◽  
Author(s):  
Lu Zheng ◽  
Yining Sun ◽  
Jing Wang ◽  
He Huang ◽  
Xin Geng ◽  
...  

In this present study, we proposed a smart biomineralization method for creating hybrid organic–inorganic nanoflowers using a Co2+-dependent enzyme (D-psicose 3-epimerase; DPEase) as the organic component and cobalt phosphate as the inorganic component. The prepared nanoflowers have many separated petals that have a nanometer size. Under optimum conditions (60 °C and pH of 8.5), the nanoflower can display its maximum activity (36.2 U/mg), which is about 7.2-fold higher than free DPEase. Furthermore, the immobilized DPEase presents enhanced pH and thermal stabilities. The DPEase-nanoflower maintained about 90% of its activity after six reaction cycles, highlighting its excellent reusability.


2017 ◽  
Vol 63 (4) ◽  
pp. 33-38
Author(s):  
Jana Kodymová ◽  
Miroslav Kyncl ◽  
Hana Švehláková ◽  
Magdaléna Bártková

Abstract Waste from anaerobic digestion is considered as a mineral fertilizer and it is usually applied to agricultural land. The aim of our attempt was to enrich this waste from anaerobic digestion (digestate) with an organic component (in our case represented by haylage). For this purpose, we made different mixtures of digestate and haylage in different weight ratios. In the field trial, the effect of these mixtures on the soil, under standard agricultural conditions, was monitored. Selected accessible nutrients (P, K, Mg, Mn, Ca) and the amount of carbon and nitrogen in the soil were monitored. The results of the laboratory tests confirmed that the areas where the sowing and digestate mixtures were applied showed greater amounts of macro- and micronutrients in plant-accessible forms than the surface fertilized only with digestate or areas fertilized only with standard fertilizers.


2016 ◽  
Vol 9 (3) ◽  
pp. 1101-1105
Author(s):  
RAMACHANDRAN TAMILSELVI ◽  
RAJENDRAN MATHAN RAJAN ◽  
VERONICA ARUNA KUMARI ◽  
DEIVANAYAGAM KANDASWAMY

2009 ◽  
Vol 8 ◽  
pp. 1-12 ◽  
Author(s):  
Maria J. Mosquera ◽  
Desireé M. de los Santos ◽  
Teresa Rivas ◽  
Patricia Sanmartín ◽  
Benita Silva

The sol-gel process has been found to be successful in applications for the conservation and restoration of stone. However, a well-known drawback of the materials obtained by this process is their tendency to crack during drying inside the pores of the treated stone. In this article, we present an overview of our current research centred on producing crack-free sol-gel materials for consolidating and protecting building stone. A novel synthesis, in which a surfactant acts as a template to make the pore size of the gel network coarser and more uniform, is shown to provide an effective alternative for preventing the cracking of consolidants. We also highlight an alternative pathway, in which we add an organic component to the silica precursor in the presence of the surfactant. The hybrid organic-inorganic gel prepared in our laboratory provides excellent waterproofing to the stones under study.


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