Conventional radiation-shielding aprons are uncomfortable and heavy for medical staff working at radio diagnostic areas. By virtue of manufacturing functional textile surfaces with high-radiation ...protection efficiency, these disadvantages of shielding garments can be eliminated. The aim of this study is production of a lightweight and comfortable textile-based shielding surface against ionizing radiation. In this paper, bismuth (III) oxide (Bi
2
O
3
) powder and polyethylene terephthalate (PET) polymer were used for coating polyester (PES) spunbond by electrospinning technology. Morphological properties were examined with SEM, EDX and FT-IR tests and thickness of samples were measured. X-ray characteristics of coated PES spunbonds were investigated by commercial computed tomography unit and electrometer. According to values read by electrometer, linear attenuation coefficient, thickness for half value layer (HVL) and tenth-value layer (TVL) and shielding performance of different amount of Bi
2
O
3
loaded samples were calculated with corresponding formulas. Results showed that ionizing radiation shielding performance of Bi
2
O
3
/PET nanocomposite fiber-coated PES spunbonds were better than that of undoped PET nanofibers coated ones. X-ray attenuation increased with increase of Bi
2
O
3
loading. Bi
2
O
3
/PET nanocomposite fiber-coated PES spunbonds with their multilayered forms are alternative promising surfaces for production of wearable shielding garments.
Verbascum thapsus (VT) is a medicinal plant that is used in folk medicine to treat a variety of ailments. For this study, the biological functions of VT methanol extract were determined in vitro. The ...plant's methanol extract was created through the maceration process. The phytochemical composition of plant extracts was investigated using liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS). The antioxidant capacity of the extract was determined using the DPPH (2,2-diphenyl-1-picrylhydrazil) and ABTS (2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) tests and its cytotoxicity was assessed using the MTT ((3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, a tetrazole)) assay on the Caco-2 (human colorectal adenocarcinoma cells), LNCaP (Lymph Node Carcinoma of the Prostate), and HEK293 cell lines (Human embryonic kidney 293 cells) used to model colon, prostate, and non-cancerous cells. VT extract showed low DPPH and ABTS radical scavenging activities compared to standard antioxidants at 30 mg/ml concentration. In addition, it was determined that VT extract inhibited acetylcholinesterase enzyme.
The composite consisted of clay and polymers like polyethylene (GCP) was used to remove methylene blue (MB) from the water. The most effective pH, temperature and initial dye concentration in ...adsorption process were found to be 9, 55 °C and 5 × 10
−6
M, respectively. The results of the experiment showed that the adsorption process was compatible with the pseudo-second-order model. Activation parameters of Δ
G
: − 70.64 K J mol
−1
, Δ
S
: − 70.64 J mol
−1
K
−1
,
E
a
: 12.37 K J mol
−1
at 308 °C were calculated and showed that adsorption process was exothermic and spontaneous. The results revealed that adsorption of MB on composite GCP was spontaneous and the composite of GCP
f
could be used for removing of MB from the water.
The Allium turcicum L. (Zuzubak) plant as a cultivated vegetable have various health benefits and consumed as a food. Due to the shortcoming evidence in literature and the importance of this plant in ...folk medicine, in the present study, for the first time, we evaluated the bioactive profile of components (using LC-MS/MS), cytotoxicity, anticancer, antioxidant, and antibacterial prospectives of Zuzubak methanol extract. Reported results show that the extract is rich in bioactive compounds and has anticancer activity with breast cancer cells (MCF-7), human prostate cancer cells (DU-145), and Human osteosarcoma cancer Cell lines of (IC50) in dose dependent manner in the concentration range of 31.25 μg/mL and 2000 μg/mL for 24 and 48 h. Western blotting results determined that the extract significantly suppressed the growth of U2OS, MCF-7, and DU-145 cancer cells by down expression of Ang-1 (angiogenic protein) and Beclin-1 (autophagy protein) and overexpression of Bax (a proapoptotic protein). The oxidative stress indices showed a reduction in RPE-1 and MCF-7 cells and an upsurge in U2OS and DU-145 cells. Additionally, the antimicrobial assay showed suppression of the growth of various pathogenic microorganisms in 4.00–8.00 μg/concentrations of Zuzubak extract using the microdilution method. The phytochemicals identified showed promising anticancer, antioxidant effects, and antimicrobial properties, representing a valuable herbal source for drug development studies.
A new sensor, based on boramidic acid‐bounded MWCNTs (Multi‐walled carbon nanotubes), was synthesized in three simple steps. Modification of the sensor surface was accomplished using boric acid in ...which the boron atom is adjacent to the NH group. Characterization, electrochemical behaviors, and stability of newly modified nanosensor were completed using SEM (scanning electron microscope), TEM (Transmission electron microscope), CV (cyclic voltammetry), EIS (electron impedance), DTA (Differential thermal analysis), and XPS (X‐ray photoelectron spectroscopy). SEM and TEM analysis were confirmed the modified surface of the nanosensor. The stability of the newly synthesized sensor was also designated that the initial weight loss occurred between 50–145 °C was corresponded to the degradation of both ethylene diamine and boric acid. According to the EIS study, the Nyquist plot of the MWCNTs‐NH‐B (OH)2/GC electrode displayed a 0.435 kΩ Rct with a smaller semicircle than the bare GC (6.57 kΩ). The electrochemical behavior of dopamine was investigated using cyclic and square wave voltammetry (0.1 M phosphate buffer solution‐pH 7.4). The diffusion‐controlled process was determined when the oxidation of dopamine was studied. The detection limit of dopamine was found to be 5.1 nM. An actual sample study was done using the developed analytical method, and the detection of dopamine in urine was successfully performed. This study is the first example of boramidic acid‐modified multi‐walled carbon nanotubes
This study refers to a nano‐boramidic acid for the sensing of dopamine in a real sample. This is the first study of boramidic acid in the literature. Limit of detection was 5.1 nM which is the highest value for the nano‐boron type of sensors.
In this research, the herbaceous peat collected from Gavurgolu peatlands, one of the biggest Turkish peatlands, was utilized as an adsorbent for the removal of copper (II) ions from aqueous solution. ...Adsorption experiments were conducted under various conditions, i.e., initial concentration, temperature, and pH. While the amount of Cu (II) adsorbed on the peat increased with increasing concentration of Cu (II) ions, it was not markedly affected by temperature and pH. Percentage removal was higher at lower concentration. For example, the maximum percentage removal of Cu (II) ions for initial concentration of 3×10
−4 M was 97.04% at 21
°C and pH 5.5. The adsorption capacity (
Q
0) of the peat was 4.84 mg
g
−1 from Langmuir adsorption isotherm for the concentration range of 3×10
−4−6×10
−4 M at 21
°C and pH 5.5. The equilibrium time of adsorption of Cu (II) ions was 150 min and independent of concentration and temperature. The amount of Cu (II) adsorbed at equilibrium time did not considerably change with temperature and pH. It was also determined that adsorption isotherm followed both Freundlich and Langmuir. Uptake mechanism of Cu (II) ions by the peat occurs via cation exchange (especially by means of Ca
2+ and Mg
2+) as well as copper/peat complexation. Adsorption kinetic was consistent with the pseudo-second-order model.
In this research, adsorption properties of bovine serum albumin (BSA) on diatomite clay, which is an oxide mineral, were studied as a function of BSA, sodium phosphate buffer and protein ...concentration and pH and the thermodynamic parameters of adsorption process were investigated. The BSA adsorption experiment onto diatomite clay indicated that the BSA solution reached the maximum adsorption value at pH 5.5. It was observed that the maximum adsorption capacity (qm) of the data obtained from the adsorption studies showed a great dependence on pH. The maximum amount of adsorption in adsorption experiments can be considered as points where the electrostatic interaction for pH is appropriate. Both structural and electrostatic interaction in regions outside of the isoelectric point may have caused a decrease in BSA absorbance. The structural influences were associated with different conformational states that while BSA molecules accept changes with pH, electrostatic effects can be observed in BSA molecules behaved like soft particles. In this case, it is not possible to explain the independence of the qm–pH curves of the amount of adsorption. The protein molecules at this point are very stable. Because this value is close to the isoelectric point of serum albumin. The surface structural change of BSA and diatomite clay was studied. For this, Fourier transform infrared spectroscopy (FTIR) spectroscopy values were compared before and after the experiment. The diatomite samples used as support material were characterized by FTIR, scanning electron microscopy, thermogravimetric analysis and Brunauer Emmett–Teller surface area analysis. The thermodynamic functions such as enthalpy, entropy, Gibbs free energy and activation energy were investigated in their experimental work. The thermodynamic parameters such as Gibbs free energy (Δ
G
*),
E
a
, Δ
H
* and Δ
S
* were calculated as − 67.45, 15.41, − 12.84 kJ mol
−1
and − 183.28 J mol
−1
K
−1
for BSA adsorption, respectively. We can deduce that the adsorption process from the data obtained from the thermodynamic parameters is spontaneous and exothermic. The adsorption of the process was investigated using Eyring and Arrhenius equations, and its adsorption kinetic found to be coherent with the pseudo-second-order model. As a result, we reached that the diatomite clay is a suitable adsorbent for the BSA. Experimental results showed that diatomite clay has the potency to be used for rapid pretreatment in the process of identifying proteins.
In this study, we aimed to synthesize phenol–formaldehyde type resins from the reaction of grapevine cane (
Vitis vinisera L.) liquefied with phenol in the presence of sulfuric acid as catalyst. The ...biomass was first liquefied with phenol in the presence of sulfuric acid as a catalyst at 150
°C for 2
h. The liquefied grapevine cane powders were then resinified with formaldehyde at the different ratios in the presence of NaOH as a catalyst. Three-layer plywoods were prepared by using phenol–formaldehyde type adhesive from liquefied grapevine cane. The bond strength was evaluated by the tensile-shear test following the same standard for phenol resin adhesives to evaluate dry- and water-proof adhesive bond strengths. The results showed the grapevine canes could easily be liquefied with phenol in the presence of sulfuric acid as a catalyst. It was also determined that almost all the resol-type resin adhesives prepared from the liquefied grapevine canes met the Japanese Industrial Standard as far as dry shear adhesive strengths of plywood were concerned. However, boiling water-resistant adhesives could be prepared from resinification of H
2SO
4-catalyzed liquefied grapevine cane at a formaldehyde/phenol molar ratio of about 2.0 or above.
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