sr6nb10o30–nb2o5 nanocomposite was synthesized in 2m naoh aqueous solution. a stoichiometric 1:1 sr:nb molar ratio hydrothermal method at 120°c was used to synthesize this nanocomposite. sr(no3)2 and nb2o5 were used as raw materials. the synthesized nanomaterials were characterized by powder x-ray diffraction (pxrd) technique. it was found that sr6nb10o30 was crystallized in tetragonal crystal ...

a combination of an acidification reactor and an up-flow staged sludge bed (ussb) reactor wasapplied to treatment of molasses wastewater. the ussb, equipped with three gas solid separators, wasselected because of superior organic removal by means of good retention of granular sludge. the combinedsystem was continuously operated at mesophilic (35°c) conditions for 600 days. the ussb achieved a h...

Aquantitative structure-property relationship studywasperformedon the criticalmicelle concentration (cmc) of nonionic surfactants using the CODESSA program. A known correlation between the logarithm of the cmc and counts of linear alkane carbon atoms and ethoxy groups in linear alkyl ethoxylates was improved (R2 ) 0.996) by adding cross terms of these molecular descriptors. A general three-para...

Objective(s): The structure- activity relationship of a series of 36 molecules, showing L-type calcium channel blocking was studied using a QSAR (quantitative structure–activity relationship) method. Materials and Methods: Structures were optimized by the semi-empirical AM1 quantum-chemical method which was also used to find structure-calcium channel blocking activity trends. Several types of ...

This paper develops a statistical learning approach to identify potentially new high-temperature ferroelectric piezoelectric perovskite compounds. Unlike most computational studies on crystal chemistry, where the starting point is some form of electronic structure calculation, we use a data-driven approach to initiate our search. This is accomplished by identifying patterns of behaviour between...

Previous studies on social enterprises reported that unlike private enterprise consumers, social enterprise consumers appreciate the social value of the enterprise products and that social value affects customer satisfaction and repurchase intention. However, previous literature also pointed out that focusing only on social value as the factor affecting purchase behavior does not reflect the ch...

Purpose – This article examines the notion of value propositions (promises of reciprocal value between service providers and their customers), value-in-exchange and value-in-use, all within the conceptual context of service-dominant (S-D) logic. Design/methodology/approach – Responding to calls in the recent literature for an academic critique of S-D logic, its key constructs, and its applicati...

COVID-19, which has spread all over the world and was declared as a pandemic, is new disease caused by coronavirus family. There no medicine yet to prevent or end this pandemic. Even if existing drugs are used alleviate not enough. Therefore, combinations of their analogs being studied. Vaccines produced for COVID-19 may be effective variants virus. it necessary find soon possible. Topological ...

a r t i c l e i n f o The typical characteristics of subsistence markets challenge not only the generalizability of marketing theories but also the applicability and validity of the field research methods generally practiced by marketing researchers. This article discusses challenges inherent to field research in subsistence markets that may influence bias and equivalence. Moreover, it illustra...

How do relationship maintenance behaviors affect individual well-being? Given that people who invest time and effort toward achieving important goals see their outcomes as more reflective of their skills and abilities than do people who invest less time and effort, engaging in relationship maintenance behaviors may lead people to experience increased individual well-being when those behaviors a...