The X-ray diffraction internal standard method can quantitatively determine the ash content of paper, but the requirements for the experimental environment are high, the determination is not convenient and the cost is high, and it is difficult to be widely used in the papermaking enterprises. In order to determine the total ash and its components of the single filler paper samples, and meet the ash

Dechlorination of coal-fired flue gas is a novel approach for realizing zero discharge of desulfurization wastewater. The core principle is to convert the HCl in the flue gas into chloride salt, which will migrate into the fly ash. Pilot-scale experiments were conducted to research the migration and agglomeration of chlorine in actual coal-fired flue gas in a power plant. The results indicate that

In this study, after specifying theoretical reaction conditions required for the chemical reaction, potassium pentaborate (KB5) was synthesized from the potassium dihydrogen phosphate (\({\text{KH}}_{2} {\text{PO}}_{4}\)) solution and raw colemanite (\({\text{Ca}}_{2} {\text{B}}_{6} {\text{O}}_{{11}} \cdot 5{\text{H}}_{2} {\text{O}}\)) ore. The slow evaporation solution method was used at 25 °C. The

A simple method for the recovery of anthocyanins from eggplant peel by adsorption has been developed. Anthocyanins were extracted from eggplant peel and adsorbed onto three carbon adsorbents with different structures (C1, C2 and C3). The effects of the carbon pore size on the adsorption capacity were investigated. It was found that the size exclusion influenced the adsorption process. C1 had the best

Background Lanthanide-doped nanoparticles are potential candidates for photodynamic therapy (PDT) owing to their chemical and optical features. Following irradiation by X-ray or UV light, these scintillating nanoparticles emit light matching the photosensitizer absorption spectrum. These properties allow both targeted cancer therapy and deep cancer treatment. Methods and results LaF3: Tb3+ nanoparticles

Using nanosized metal substrates, surface-enhanced Raman scattering (SERS) is a tool for improving the Raman signal of biomolecules. For detection, SERS has gained much popularity and an important role in determining chemical composition. In the present study, SERS spectra of 2-methyl-4-(4-methylpiperazin-1-yl)-10H-thieno[2,3-b][1,5]benzodiazepine (olanzapine) (MPTB) were investigated on silver and

The aim of the current study was to analyze the stability of rosmarinic acid in ethanolic tinctures of lemon balm (Melissa officinalis L.), oregano (Origanum vulgare L.), peppermint (Mentha x piperita), rosemary (Rosmarinus officinalis L.), sage (Salvia officinalis L.), and thyme (Thymus vulgaris L.). High-performance liquid chromatography with diode-array detection (HPLC–DAD) was employed to monitor

This article presents a thermal sintering method to fabricate porous bone tissue engineering scaffolds based on polycaprolactone (PCL), polylactic acid (PLA), and their composites. The mechanical properties, porous structure, biodegradability, and biocompatibility of sintered scaffolds were evaluated. The scaffolds showed a porosity in the range of 86–91% with a pore size of 75 m\(\mu\) to 400 m\(\mu\)

A new pyrazole derivatives azo dye 1-(3-phenyl-5-Pyrazolylazo)-R acid (L1) and 5-(3-phenyl-5-Pyrazolylazo)-8-hydroxy quinoline (L2) was synthesized. The acid–base equilibrium, ionization constants, the effect of pH and some organic solvents on the spectra of ligands, the chromogenic reaction and the stability constant of Co+2, Cu+2,Ni+2 and Zn+2 ion complexes with ligands were studied and determined

Alite-ye'elimite cement (ACSA) was synthesized by single firing process at lower temperature with addition of phosphorous slag and copper slag, which could be a promising low-energy Portland cement. The coexistence of alite and ye’elimite in this clinker can improve the cement quality and their coproduction during clinkering is crucial. Thus, in order to modify the mineralogical phase composition and

A comprehensive CFD study was conducted to understand the hydrodynamics characteristics in a top-covered unbaffled stirred tank. The turbulent flow in the tank was described by the Reynolds stress turbulence (RST) model, and the impeller rotation was simulated using a single reference frame (SRF) approach. The flow field and power number in the tank stirred by a Rushton turbine were investigated firstly

Simultaneous production of propene and hydrogen from ethanol is a promising way of a renewable feedstock conversion into value-added products. Conventional reaction schemes of the direct one-step catalytic conversion of ethanol into propene include the reaction of the isopropanol dehydration to propene. However, the dehydration ability of a catalyst inevitably gives rise to the ethanol dehydration

In this study, six different organo-hydrogels containing agar-glycerol (AG)-based garlic oil (GO) were synthesized using two different crosslinkers (N,N, methylenebisacrylamide (MBA), glutaraldehyde (GA)) to ensure the controlled release of ceftriaxone (Ce) and carboplatin (Cp). Synthesized organo-hydrogels were characterized by FT-IR. Afterward, swelling behaviors were investigated in DI, tap water

The destabilization of disperse systems using flocculation is an approach in hydrometallurgy, purification of wastewater, agriculture, etc. The recent efforts here have been made in development of polyelectrolytes. In this work, the bentonite clay hydrodispersions stability under the influence of polyelectrolytes, differing in molar ratio, and types of functionality, was investigated. The dispersions

Polymeric blend mixed matrix membranes (PB3Ms) are synthesized with different blend compositions at a fixed content of carbon molecular sieve (CMS) inorganic filler. The resulting membranes are characterized by FESEM, TGA, DSC and FTIR analyses. Polyethersulfone (PES)/polyvinyl acetate (PVAc)/CMS polymeric blend mixed matrix membranes are prepared by solution casting method. A homogenous mixture of

A fluorenyl-thioic-based dye (P) bearing a thioic ester moiety was designed, synthesized and spectroscopically characterized. The photophysical properties were studied via UV–Vis spectroscopy in acetonitrile (CH3CN) as a solvent of choice. Upon investigating and studying the photophysical properties, it was found that P could be an ideal colorimetric sensor for biologically important anions and cations

Tuberculosis continues to wreak havoc worldwide and caused around 1.4 million deaths in 2019. Hence, in our pursuit of developing novel antitubercular compounds, we are reporting the e-Pharmacophore-based design of DprE1 (decaprenylphosphoryl-ribose 2′-oxidase) inhibitors. In the present work, we have developed a four-feature e-Pharmacophore model based on the receptor–ligand cavity of DprE1 protein

This article is a part of a scientific project focused on obtaining a new type of composite materials that are characterized by singlet oxygen generation upon irradiation with red light, which can be used as antibacterial agents. The composite material is nanoscale graphite oxide (GO) particles covalently bonded to an axially substituted zirconium phthalocyanine complex. For this purpose, two phthalocyanine

In this study, an alternative application of supported liquid membranes (SLMs) containing specific ion carriers dissolved in supra molecular solvent (SUPRA) to the selective and simultaneous separation of Ag+ and Pb2+ ions from a dilute source solution is introduced. A two-membrane three-compartment cell was used. Two micro-porous polypropylene supported membranes loaded with dibenzyl-diaza-18-crown-6

Facile separation and enrichment of polychlorinated biphenyls (PCBs) in foods has been a constantly pursuing goal in food analytical chemistry. Here, a reusable ionic liquid functionalized magnetic graphene oxide nanocomposite (3D-IL@mGO), synthesized based on our previous study, was used as adsorbent for the preconcentration of PCBs in the magnetic dispersive solid phase extraction (Mag-dSPE) procedure

A simple Schiff base fluorescent probe (SW) composed of oxime and salicylaldehyde units was designed and synthesized. The probe has high selectivity and sensitivity for Zn2+ ion in mixed solvent (DMSO/H2O, V/V = 9:1). The fluorescence has obvious redshift phenomenon and visible color change. The stoichiometric ratio of the probe to Zn2+ ion was confirmed to be 1:2 (mole) by 1H NMR, MS analysis and

Herein, we report the third-order nonlinear absorption and optical limiting property of fluorinated polymorphic nonlinear optical (NLO) material 1-(3,4-dimethoxyphenyl)-3-(4-fluorophenyl) prop-2-en-1-one (abbreviated as PDPFO) based on reverse saturable absorption. The FTIR studies of optically transparent PDPFO single crystals confirm the presence of various functional groups. PDPFO is optically transparent

This research compares two coagulants: Aluminum Base Coagulant (ABC) and Eggshell Coagulant (ESC) used for the coag-flocculation treatment of cosmetic wastewater to determine the efficacy of ESC at optimum conditions. The residual values of TSS particles in the wastewater were measured and recorded after the coag-flocculation treatment at 30 min settling time. The cubic models obtained following the

Thalictrum foliolosum is an endemic herb of the temperate Himalayas and eastern China. These plants have been used for past several decades by indigenous people to treatment of fever, gastrointestinal disease, intestinal obstruction, jaundice and eyesight problems. Although a wide diversity of alkaloids and polyphenolic compounds are found in various Thalictrum species, the presence of major polyphenolic

The present studies were carried out to evaluate the simultaneous one-pot metabolism of opipramol (IS-opi) and analog (IS-noh) by phase I and phase II enzymes present in rat liver microsomes (RLM) as an alternative to separate testing with recombinant enzymes. This approach allows for more time-saving and cost-effective screening of the metabolism of newly discovered drugs. We also considered that

Ruthenium (III)–pyridine (Ru-Py) complex has been synthesized and characterized by NMR, IR, UV–Vis, fluorescence spectroscopy and HRMS. The crystal structure of the Ru-Py complex was determined by X-ray crystallography. The Ru-Py complex was coated on a p-type Si semiconductor by a spin coating method to obtain a Schottky barrier diode (SBD) device. Basic electrical parameters of the obtained Al/p-Si/Al

The structure of complex cis-Pd(HLMe)Cl2 was studied both in solution and in solid state using multinuclear (1H, 13C, 15N) NMR spectroscopy and X-ray structural analysis. Complex was evaluated for cytotoxic activity. Thus, the results showed that cis-Pd(HLMe)Cl2 has a pronounced cytotoxicity toward human leukemic lymphoblast’s CCRF-CEM and cervix adenocarcinoma HeLa cells. Moreover, it was found that

In this work, spherical-, rod-, triangular- and hexagonal-shaped silver nanoparticles were prepared by chemical reduction method and their antibacterial efficacy against selected Gram-positive and Gram-negative bacteria had been assessed and compared. The dose-dependent antibacterial activities of prepared silver nanoparticles were observed on the batch studies of disc diffusion and MIC with various

A correction to this paper has been published: https://doi.org/10.1007/s11696-021-01658-z

A headspace-hollow fiber solid-phase microextraction (HS-HFSPME) as a selective and sensitive procedure was developed to extract benzene, toluene, ethylbenzene, and p-xylene (BTEX) prior to their determination with gas chromatography-flame ionization detection. δ-Al2O3@SiO2@CTAB core–shell was synthesized as a novel sorbent for the BTEX extraction and enforced into the surface pores on the polypropylene

Present work deals with management of the sludge deposited at the bottom of the crude oil storage tanks. As a routine practice, this sludge is disposed of by land-filling and during its bioremediation it can quite likely emit methane gas with much higher global warming potential than that of carbon dioxide. Further loss is involved in this disposal method is that of valuable hydrocarbon cuts, and as

The present study aims to carry out synthesis and characterization of Te-doped ZnO nanoparticles using an easy, low cost and solution-free thermo-mechanical method. The structural, morphological, optoelectronic characteristics of the as-prepared Te-doped ZnO NPs were analyzed by several techniques. From the FE-SEM studies, both pristine and Te-doped ZnO showed tube-shaped morphology when ground for

Spectroscopic, DFT, and SERS studies of antimicrobial bioactive 2-(p-bromophenyl)-5-(2-(4-(p-chlorophenyl)piperazine-1-yl)acetamido)benzoxazole (BCAB) have been reported. Very large changes are seen wavenumbers in Raman and SERS. Variations in modes may be due to surface π-electron interactions and means, the BACB is inclined with respect to the metal surface. Theoretical molecular geometry optimization

This study deals with the fabrication of hollow fiber mixed matrix membrane, and evaluation its performance toward O2/N2 gas separation. Asymmetric mixed matrix PES membranes with embedded ZIF-8 nanoparticles as the dispersed phase were prepared by dry–wet-spinning method. The morphological, thermal, and chemical properties of spun fibers were characterized by FESEM, EDS mapping, TGA, and FTIR analysis

Epilepsy is a problematic neurological disorder combined with recurrent seizures, and gabapentin is a vital antiepileptic drug proposed for the treatment of many neuropathic pains. However, the bioavailability of this drug decreases with enhancing dose and may alter the central nervous system and induces different side effects. Therefore, design and fabrication of visible-light sensitive nanocarriers

Sugarcane wax has been used as a source of nutraceutical products by Cuba and other Asian countries. Sugarcane wax is obtained industrially from sugarcane juice filter mud or cachaza, as it is also called, through a solvent extraction process. There are different studies where the use of toluene, hexane, heptane and benzene is recommended as solvents for wax extraction, but none of the previous studies

The drug loading efficiency of magnetite nanoparticles (MNPs) can be enhanced by coating with polyethylene glycol (PEG) which is a biocompatible polymer. The PEG-coated MNPs could be the potential candidates for carrying the drug molecules to the targeted sites. In this study, size-controlled MNPs were synthesized and functionalized with PEG of molecular weights 700, 2000 and 5000. The MNPs and PEGylated

A correction to this paper has been published: https://doi.org/10.1007/s11696-021-01649-0

This study was conducted to examine the binding of a newly synthesized Schiff base derived from 2-hydroxy-1-naphthaldehyde and 5-amino-2-mercaptobenzimidazole with human serum albumin (HSA) employing various biophysical techniques. The thermal-based fluorescence quenching data indicated that static quenching occurred between the ligand and HSA. The fluorescence results expose that ligand quenches the

Tomato is a potentially valuable source of bioactive compounds such as lycopene. The degradation/isomerization rate of lycopene can be highly enhanced by the drying process of tomato pulps. In this study, the dehydrated tomatoes by osmotic solutions were processed by drying methods of hot air (HA), vacuum-assisted hot air (VA-HA), sun-assisted hot air (SA-HA), and microwave-assisted hot air (MA-HA)

Preparation and characterizations of poly(pyrrole-co-pyrrole-3-carboxylic acid) (PPYPA) film on the surface of screen printed carbon electrode (SPE) has been discussed in the manuscript. Different ratios of monomer for PPYPA preparation will be applied to determine 17β-estradiol using cyclic voltammetry. The SPE was modified with PPYPA film using an electrodeposition method and followed by the immobilization

The vascular endothelial growth factor (VEGF) is the main target of tumor treatment. VEGFR-2 is the main functional receptor of VEGF, which is involved in the regulation of angiogenesis. Based on hologram quantitative structure activity relationships (HQSAR) and topomer comparative molecular field analysis (topomer CoMFA), the contribution of 6-amide-2-aryl benzoxazole/benzimidazole derivatives (VEGFR-2

Poly (2-acetyl pyrrole) P (2-APy) has been prepared chemically using ammonium persulfate (APS) as an initiator under high stirring at room temperature and pH (3.5). The formed P(2-APy) has been fully characterized via Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) as well as UV–VIS spectroscopy. The morphology of the formed