نتایج جستجو برای: ferrous and nonferrous industries
تعداد نتایج: 16831407 فیلتر نتایج به سال:
This paper made an analysis about advantage and disadvantage of Guangxi non-ferrous metal industry. Based on the RBF neural network model, the paper then gave an evaluation of technological innovation ability about non-ferrous metal industry in Guangxi. And then, the paper proposed some suggestions how to better develop non-ferrous metal industry in Guangxi.
Many bituminous coal mine effluents contain, along with other ions, high concentrations of ferrous iron. This is brought into solution by sulfuric acid produced by the oxidation of sulfuritic material, possibly iron sulfides in part, occurring with bituminous coal (Leathen et al., 1952). The ferrous iron is oxidized by bacteria to the ferric state at a more rapid rate than can be accounted for ...
Abstract Since the “double carbon” target was proposed in 2020, emissions reduction has become focus of Chinese government's work. Industrial development is a crucial factor contributing to increase carbon emissions. Therefore, implementing industrial sector an important part China's goal carbon.” In this context, paper uses three‐stage data envelopment analysis model calculate green total prod...
Evaluation of Iron Bioavailability in Caco-2 cell Culture Model: Modification of the Original Method
Background and Objectives: In the original in vitro method for evaluation of iron bioavailability using caco-2 cell model, ferritin formation by cells is considered as a functional indicator of both absorption and utilization of iron. However, as iron is measured in the tested material and then ferritin concentration is measured in caco-2 cell lysate, it is almost impossible to have a concrete ...
Geopolitical conditions continue to exert a significant influence on the state and development of Russian economy, along with macro microeconomic factors. In this regard, protracted crisis period makes companies certain industries regions more dependent external internal conditions. The article discusses theoretical practical aspects formation structure monetary capital in metallurgical industr...
abstract background some researches have shown the association between iron deficiency and migraine headache in adults. the aim of present study was to evaluate efficacy of ferrous sulfate treatment on migraine headaches of 5-15 years old migraineur children with iron deficiency. materials and methods in a quasi- experimental study, monthly frequency, severity, duration and disability of headac...
We propose a systematic method for creating constellations of unitary space–time signals for multiple-antenna communication links. Unitary space–time signals, which are orthonormal in time across the antennas, have been shown to be well-tailored to a Rayleigh fading channel where neither the transmitter nor the receiver knows the fading coefficients. The signals can achieve low probability of e...
Formation of magnetite nanocrystals by magnetotactic bacteria is controlled by specific proteins which regulate the particles' nucleation and growth. One such protein is Mms6. This small, amphiphilic protein can self-assemble and bind ferric ions to aid in magnetite formation. To understand the role of Mms6 during in vitro iron oxide precipitation we have performed in situ pH titrations. We fin...
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