Background: The accurate diagnosis of infections can significantly enhance preventative measures against abortion. Objectives: The rates of Streptococcus agalactiae, Mycoplasma hominis, and Listeria monocytogenes were investigated in the vaginal secretions of women with abortion. Furthermore, this study aimed to detect S. agalactiae capsular types by multiplex Polymerase Chain Reaction (PCR) and sequencing. Methods: The study collected vaginal samples obtained from a cohort of women with abortions of unknown cause from various healthcare facilities across Iran, as well as their counterparts who did not experience any reproductive issues. Molecular identification was performed by a multiplex PCR protocol for the amplification of specific regions within the bacterial 16S rRNA gene. The capsular polysaccharide of S. agalactiae was identified by multiplex PCR of the caps gene. Then, the sequences of the amplified gene were analyzed by Mega X. Finally, some factors that exerted a noteworthy influence on the likelihood of miscarriage were determined. Results: The study found S. agalactiae, M. hominis, and L. monocytogenes in the vaginal secretions of women with abortion, with respective frequencies of 9. 09%, 4. 54%, and 2. 7%, which were more than the frequencies in the pregnant healthy women. The caps III (4%) and caps V (6%) genes were identified in the S. agalactiae isolates. The sequences of caps III or caps V did not show any differences among the isolates containing each gene. Conclusions: The findings demonstrated the significance of preemptively managing prevalent infections and investigating risk factors in women prior to pregnancy. No difference in the sequences of the caps genes is promising for the adoption of vaccination and therapeutic strategies.

As usual, let $\mathcal RL$ denote the ring of real-valued continuous functions on a completely regular frame $L$. Let $\beta L$ and  $\lambda L$ denote the  Stone-\v{C}ech compactification of $L$ and the Lindel\"of coreflection of $L$, respectively. There is a natural way of associating with each sublocale of $\beta L$ two ideals of $\mathcal RL$, motivated by a similar situation in $C(X)$. In~\cite{DS1}, the authors go one step further and associate with each sublocale  of $\lambda L$ an ideal of $\mathcal RL$ in a manner similar to one of the ways one does  it for sublocales of $\beta L$.  The intent in this paper is to augment~\cite{DS1} by considering two other coreflections; namely, the realcompact and the paracompact   coreflections.\\        We show that $\boldsymbol M$-ideals of $\mathcal RL$ indexed by sublocales of $\beta L$ are precisely the intersections of maximal ideals of  $\mathcal RL$. An $\boldsymbol{M}$-ideal of $\mathcal RL$ is \emph{grounded} in case it is of the form $\boldsymbol{M}_S$ for some sublocale $S$ of $L$. A similar definition is given for an  $\boldsymbol{O}$-ideal of $\mathcal RL$.  We characterise $\boldsymbol M$-ideals of $\mathcal RL$ indexed by spatial sublocales of $\beta L$, and $\boldsymbol O$-ideals of $\mathcal RL$ indexed by closed sublocales of $\beta L$ in terms of grounded maximal ideals of $\mathcal RL$.

Ureteral injuries complicate 0.5-1% of pelvic surgeries in both genders. Diagnosis is usually delayed due to subtle presentation, causing accumulation of urea in the blood and acute renal injury. This prevents physicians from using contrast-based imaging modalities to locate the site of ureteral defect. We aim to reinforce the importance of renal scintigraphy in patients with ureter injury and coexisting renal functional compromise. Two cases of iatrogenic ureter injury and one case of a urinary leak following renal transplantation are presented. All three cases presented with increased creatinine level (due to delayed diagnosis) which made a CT scan, or intravenous pyelogram contraindicated. We used a Technetium-99m-L,L-ethylenedicysteine ([99mTc]Tc-EC) renal scan to locate the site of the ureteral defect without adversely affecting the renal function. In conclusion, [99mTc]Tc-EC is mainly excreted from nephron tubules and can be used in patients with decreased glomerular filtration rate with no additional harm to the kidney including in patients with delayed diagnosis of iatrogenic ureteral defect leading to acute kidney injury (AKI). While the CT scan or IVP was contraindicated, the [99mTc]Tc-EC renal scan located the ureteral defect without compromising kidney function, as [99mTc]Tc-EC is mainly excreted from nephron tubules and can be safely used in patients with AKI.

The printed circuit boards of mobile phones contain precious metals such as gold, platinum, and palladium, with 542, 30, and 26 ppm, respectively, and among the available base metals, copper constitutes the highest weight percentage (30.675%). Therefore, the recycling of this waste is very important not only from an environmental point of view but also from an economic point of view. the leaching operation, was performed, on the original sample printed circuit boards of mobile phones and cakes obtained from leaching with sulfuric acid by the amino acid L-valine and the effect of parameters such as L-valine concentration, temperature, pH, time, the oxidizing amount, the pulp density on the gold recovery was investigated and compared. The results showed that the parameters of temperature, leaching time, pH, relative to pulp density, L-valine concentration, and the amount of oxidant are more important in gold recovery, respectively. Recovery of gold leaching with L-valine amino acid under optimal conditions of L-valine concentration of 200 g/t, temperature 80 °C, pulp density 10%, oxidizing amount of 50 ml/l, pH 11.5, and leaching time 32 hours on the original sample and the cake obtained from leaching with sulfuric acid were 62.23% and 87.34%, respectively. In other words, by acid leaching with sulfuric acid before leaching with amino acid L-valine, the recovery of gold leaching by L-valine increases by about 25.11%.

The dynamics behavior and stability of axially functionally graded fluid-conveying nanotube is investigated, in this paper. The simultaneous influence of both fluid flow and variation of modulus of elasticity on the behavior of simply–simply supported (S-S) and clamp-clamp (C-C) boundary conditions conveying fluid were studied. Small-scale effects are considered using nonlocal couple stress theory in the solid part and in the fluid part. Based on the nonlocal couple stress theory, Bernoulli-Euler beam theory, and Hamilton’s principle, the governing equation of motion, and associated boundary conditions were derived to explain fluid-structure interaction (FSI). These equations were solved using Galerkin numerical method and temporal differential equation analysis method. The effects of some parameters such as Knudsen number, density, size parameter, and … were investigated. According to the results, it can be seen that the present method has created an equilibrium for the effect of the size parameters (μ, l) on the critical velocity. The higher value of the Knudsen number caused sooner divergence and flutter instabilities to happen. The results show that if the parameters of the size effect are not considered, it causes errors in the calculations. The obtained results confirm the crucial effects of size.

Prolinium triflate (ProTf) was easily prepared by addition of triflic acid to an aqueous solution of l-proline. The latter is employed as a catalyst for the condensation of indoles with aldehydes or ketones in aqueous media to form a series of bisindolyl methanes in high yields.

From the reaction of ZnCl2 and HgCl2 metal salts with (E)-4-chloro-N-(pyridine-2-ylmethylene) benzeneamine (L) in methanol solution, two binuclear Schiff base complexes were prepared. Both complexes were characterized by elemental analysis, UV–Vis, and IR spectrophotometry. X-ray crystal structure analysis showed that metal ion in the resulting centrosymmetric dinuclear ML2Cl4 complexes is in a distorted trigonal bipyramidal and a distorted square pyramidal coordination environment in the case of Zn (II) and Hg (II) metal ions, respectively. Three types of reaction between MCl2 salts and ligand L producing three different types of products-ML22+, MLCl2, and M2L2Cl4-were simulated in both the gas phase and solution. The gas phase calculations at DFT (B3LYP) level of theory using SDD, CEP-121G, and LanL2DZ basis sets showed that the binuclear M2L2Cl4 complexes are more stable than corresponding mononuclear MLCl2 complexes. Furthermore, both the gas phase and solution studies showed that the formation of M2L2Cl4 complexes from the metal cations, chloride anion, and ligand molecule is energetically more favored than that of MLCl2 and ML22+ complexes.

In this research, Solamen Vaillanti mollusk (SVM) skin biosorbent was synthesized and used as a low-cost and environmentally friendly adsorbent to eliminate cobalt (Co2+) heavy metal ion from aqueous solution. The surface morphology and specific surface area of SVM were analyzed by SEM and BET analyses. Also, impact of various effective factors like pH, temperature, contact time, biosorbent dose and cobalt ion concentration was studied on the uptake process. According to our study, the highest biosorption efficiency of Co2+ (97.31%) was attained at pH 5, a mixing speed of 200 rpm, Co2+ ion concentration of 5 mg/L and biosorbent dosage of 2 g/L after 50 min. Also, the maximum biosorption capacity of SVM biosorbent was 16.23 mg/g, which achieved at pH 5 and temperature of 25 oC. Moreover, kinetic and equilibrium investigations demonstrated that the quasi-second order kinetic model and the Langmuir isotherm model has better compatibility with the experimental data.

Quercetin belongs to the flavonol family. It is most abundant among the flavonoid molecules. A method was developed for quantification of quercetin in apple and onion using differential pulse voltammetry at graphene modified glassy carbon electrode (GR/GCE) and UV spectrophotometry as reference method. The electrochemical behavior of quercetin at the GR/GCE was investigated, and the results indicated that the electrode reaction was controlled by adsorption. The anodic peak current almost stops increasing after 280 s accumulation. This indicates that the accumulation of quercetin at the electrode surface nearly reaches a saturation state after 280 s. The accumulation potential was analyzed between −0.6 and 0.3 V, a maximum peak was achieved at 0.2 V. Under the optimal conditions, the peak currents of DPV increased linearly with the quercetin concentration in the range from 0.006 to 10 and 10 to 100 mmol L-1 with limit of detection 3.6 nmol L-1. The proposed method was successfully applied in the detection of quercetin in foods.