The study aimed at evaluating the humic substances (HSs) content from municipal solid waste incinerator (MSWI) bottom ash and its variation with time and the effect of temperature on HSs formation. The process suggested by IHSS was applied to extract HSs from two different bottom ash samples, and the extracted efficiency with NaOH and Na4P2O7 was compared. MSWI bottom ash samples were incubated...

Hollow silica spheres (HSS) with special interior spaces, high specific surface area and excellent adsorption and permeability performance were synthesized via micelle-template method using cetyl trimethyl ammonium bromide (CTAB) micelles as soft template and tetraethoxysilane (TEOS) as silica precursor. SEM, TEM, FT-IR, XRD, DLS and BET-BJH were carried out to characterize the morphology and s...

In this paper, we investigate the numerical error propagation and provide systematic backward stability analysis for some hierarchical rank structured matrix algorithms. We prove the backward stability of various important hierarchically semiseparable (HSS) methods, such as HSS matrix-vector multiplications, HSS ULV linear system solutions, HSS linear least squares solutions, HSS inversions, an...

Species of several unrelated families within the angiosperms are able to constitutively produce pyrrolizidine alkaloids as a defense against herbivores. In pyrrolizidine alkaloid (PA) biosynthesis, homospermidine synthase (HSS) catalyzes the first specific step. HSS was recruited during angiosperm evolution from deoxyhypusine synthase (DHS), an enzyme involved in the posttranslational activatio...

Application of high strength steel (HSS – S420 and higher grades) is growing nowadays in the civil engineering praxis due to numerous advantages compared normal (NSS S235-S355). The accurate consideration flexural buckling resistance HSS structures highly important design. Higher yield indicates applicability smaller cross-sections, which might be more sensitive for stability problems. purpose ...

Abstract High-temperature tribology, which is often involved during hot metal forming, controlled via oxidation on a rubbing surface. However, for high chromium stainless steel (ST), where strongly inhibited, the effect of counterface materials tribological behavior yet to be elucidated. In this study, effects counterfaces 253MA ST and mild (MS) are investigated ball-on-disc test at 900 °C usin...

In this paper, the finite element simulation software ABAQUS was used to study hysteretic performance of Q690 high-strength steel (HSS) and high-web box-section columns. The model established by solid elements, influence initial defects materials on specimen considered. hyteretic conducted analyzing comparing width-thickness ration flanges webs. results show that increase ratios webs will reduc...