To evaluate how enhanced efficiency liquid nitrogen (N) fertilizers affect winter wheat ( Triticum aestivum L.) production under irrigated and rain-fed environments, experiments were conducted at two five sites across the Canadian Prairies from 2013 to 2018 (22 site-years). The N included urea ammonium nitrate (UAN) treated with i) urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT), ii...

Platinum group metal-free catalysts have been intensively investigated in the last decades as an alternative to platinum with aim of lowering cost polymer electrolyte fuel cells. In particular, iron-nitrogen-carbon (Fe-N-C) has proved be most active towards oxygen reduction reaction. For practical application, a hierarchical pore structure is required, micropores favouring creation sites and la...

The tremendous growth of polymer production since the middle of the twentieth century has been intimately connected with the development of new types of catalysts, A notable example in this regard is the field of poly olefin materials, While catalysts are also used in the production of other types of polymers, the properties of most of these materials are not particularly dependent on the type ...

Conjugated covalent organic frameworks (COFs) hold great promise in photocatalytic hydrogen evolution owing to their high crystallinity, large surface area, and distinct structure. However, COFs exhibit poor charge separation. Therefore, investigating highly effective COF-based photocatalysts is crucial. For the first time, conjugated COF/perylene diimide urea polymer (PUP) all-organic heterost...

In the field of stabilizer analysis today there is a need for the analytical determination of the decomposition or transformation products of the stabilizers in polymer systems including their reaction products with the polymers. For the solution of such a complex analytical task, separation problems are at the centre of modern scientific work. These separation problems are subdivided into two ...

Abstract Characteristics of new implant coating materials obtained by the method induction heat treatment and modified flavonoids nanoaggregates are studied prospects for their use in dental animal implantology presented. It has been established that a non-toxic biofunctional forming on surface implantation materials, it is had to apply following concentrations substances: propolis - 1.25 mg / ...

A chemical optical fiber sensor based on surface plasmon resonance (SPR) was developed and implemented using multimode plastic fiber. The is used to detect measure the refractive index concentration of various materials (Urea, Ammonia, Formaldehyde Sulfuric acid) as well evaluate performance parameters such sensitivity, signal noise ratio, resolution figure merit. It noticed that value sensitiv...