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Covalent organic frameworks (COFs) are promising high‐performance capacitive deionization (CDI) materials. Strategies to optimize CDI performance of COFs focus largely on hybridization with conductive substrates, to improve their their intrinsically poor conductivity. A new structure‐function relationship between COFs and their substrates is proposed here based on substrate‐induced surface curvature. Graphene (zero‐curvature) and carbon nanotubes (CNT, curved) are selected as COF growthsubstrates to assess the effect of curvature engineering effect on CDI performance of TpPa‐SO3H‐COF. Ultrahigh ion (Na+) adsorption capacity (58.74 mg g−1) is achieved by CNT‐COF hybrid (cf. compared to graphene‐COF hybrid 34.20 mg g−1), demonstrating the significance of curvature engineering. Notably, the corresponding salt (NaCl) adsorption capacity of CNT‐COF hybrid reaches 149.25 mg g−1 in 1000 ppm at 1.2 V, representing state‐of‐the‐art CDI performance, and the highest value among organic CDI electrodes. X‐ray photoelectron spectroscopy and theoretical calculations subsequently reveal that substrate curvature can induce local strain, which regulates charge distribution within the COF skeleton, causing a lower binding energy state for Na+ adsorption. Electrochemical quartz crystal microbalance measurements revealed faster Na+ adsorption kinetics of CNT‐COF due to regulated charge distribution within COF skeleton induced by substrate curvature. This work gives new insight into design of COF materials based on curvature engineering. [ABSTRACT FROM AUTHOR]

Background: Giant ovarian cysts (GOCs)complicated with progressive bulbar paralysis (PBP) are very rare, and no such literature about these cases have been reported. Through the diagnosis and treatment of this case, the perioperative related treatment of such patients was analyzed in detail, and early-stage ovarian mucinous carcinoma was unexpectedly found during the treatment, which provided reference for clinical diagnosis and treatment of this kind of diseases. Case presentation: In this article, we reported a 38-year-old female patient. The patient was diagnosed with PBP 2 years ago. Examination revealed a large fluid-dominated cystic solid mass in the pelvis measuring approximately 28.6×14.2×8.0 cm. Carbohydrate antigen19-9(CA19-9) 29.20 IU/mL and no other significant abnormalities were observed. The patient eventually underwent transabdominal right adnexal resection under regional anesthesia, epidural block. Postoperative pathology showed mucinous carcinoma in some areas of the right ovary. The patient was staged as stage IA, and surveillance was chosen. With postoperative follow-up 1 month later, her CA19-9 decreased to 14.50 IU/ml. Conclusions: GOCs combined with PBP patients require a multi-disciplinary treatment. Preoperative evaluation of the patient's PBP progression, selection of the surgical approach in relation to the patient's fertility requirements, the nature of the ovarian cyst and systemic condition are required. Early mucinous ovarian cancer accidentally discovered after operation and needs individualized treatment according to the guidelines and the patient's situation. The patient's dysphagia and respiratory function should be closely monitored during the perioperative period. In addition, moral support from the family is also very important. [ABSTRACT FROM AUTHOR]

Background: Cesarean scar defect (CSD) presents as a cystic defect that connects the uterine cavity at the site of the previous cesarean section (CS). Endometriosis refers to the discovery of endometrial glands and stroma outside the uterine cavity. Cases of endometriosis cysts at CSD have not been reported. Case presentation: In this article, we will present a patient with an endometriosis cyst at CSD with symptoms of a prolonged menstrual cycle, periods without cyclic abdominal pain, and a history of cesarean delivery. The gynecologic ultrasound showed a CSD and a mixed mass in the right front of the uterus. After about 1 month, the tumor grew from a diameter of 4.75 cm to 8.06 × 6.23 × 3.66 cm. The patient eventually had an operation, which revealed a mass protruding from the incision in the anterior uterine wall, which was attached to the anterior uterine wall by a thin tip with a smooth surface. Intraoperative rapid cytopathology suggested that endometrial glands were seen within the smooth muscle tissue, similar to endometriosis. Subsequently, the patient underwent resection of the endometriotic cyst. Final paraffin pathology showed smooth muscle with visible endometrial glands and old hemorrhage, and a one-year follow-up showed no recurrence of endometriosis cysts at CSD. Conclusions: Endometriosis cysts at CSD are very rare. The clinical symptoms may be less obvious, and the diagnosis relies mainly on the patient's previous surgical history and imaging. A finding of a pelvic mass in the location of the CSD, with or without symptoms of menstrual changes and intermittent abdominal pain, should be considered an endometriotic cyst at CSD. Surgical treatment is a good choice for this disease. Further studies are needed regarding the etiological mechanism of this case and why the mass enlarged rapidly in one mouth. [ABSTRACT FROM AUTHOR]

[Display omitted] • A review of electrochemical lithium extraction based on electrodialysis and capacitive deionization is provided. • The advantages and challenges of electrochemical lithium extraction technologies are explained. • The directions for future research and development are determined. Efficient lithium extraction and separation technologies are increasingly imperative owing to the rising demand for lithium in energy storage and electronics. However, the elevated energetic and monetary costs relative to conventional thermal and pressure separation methods, such as reverse osmosis and distillation, significantly diminish the attractiveness of this endeavor. Recently, electrochemical methods are extending into the Li+ separation and extraction technologies, including electrodialysis and capacitive deionization. This work systematically reviews recent advancements in these electrochemical extraction methods for lithium concentration. First, it systematically assesses the key evaluation parameters including extraction capacity, selectivity factor, and specific energy consumption. Moreover, advanced characterization methods crucial for comprehending the intricacies of these electrochemical technologies are outlined. Specifically, this study elucidates the extraction principles of these electrochemical methods, consolidates the current state of advancement in these extraction techniques, and juxtaposes the performance parameters of these methods. Finally, it anticipates current challenges and delineates future research directions for lithium extraction via electrodialysis and capacitive deionization techniques, thereby furnishing guidelines for lithium extraction endeavors. [ABSTRACT FROM AUTHOR]

A study examined the use of a probiotic called Probio-M9 in treating mastitis and improving antibiotic treatment. The researchers found that Probio-M9 effectively reduced mastitis symptoms, decreased inflammation, and enhanced the response to antibiotics. It also had an impact on the gut microbiome and the immune system. The study suggests that Probio-M9 can move from the gut to the mammary tissue during bacterial mastitis and lactation. These findings provide insight into the connection between the gut and mammary glands and the potential benefits of probiotics. [Extracted from the article]

C2-benzaldehyde-C6-aniline double Schiff base derivatives of chitosan were synthesized with positioning protection method for the first time. The structures and properties of the new synthesized products were characterized by Fourier transform infrared spectroscopy,13C nuclear magnetic resonance, scanning electron microscope image, X-ray diffraction, and elemental analysis. The elemental analysis results indicated that the degrees of substitution of the products were from 39.6% to 48.2%. The synthesized compounds exhibited an excellent solubility in organic solvents. The antibacterial activities of all of the derivatives were tested in the experiment, and the results showed that the prepared chitosan derivatives had significantly improved antibacterial activity of chitosan and C2-benzaldehyde Schiff bases of chitosan towardStaphylococcus aureus(ATCC 25923) andEscherichia coli(ATCC 35218). Antibacterial activity of the Schiff bases againstE. colidiffers from the substituent at the same position of different anilines and increases as the sequence aniline > p-toluidine > o-toluidine, and the antibacterial activity of the Schiff bases againstS. aureusincreases as the sequencep-toluidine > aniline > o-toluidine. TheIC50 of the C2-benzaldehyde-C6-aniline double Schiff base derivatives of chitosan againstE. coliandS. aureusis 0.0035 and 0.0031 mg L−1, respectively, much lower than that of chitosan (0.0064 mg L−1) and C2-benzaldehyde Schiff bases of chitosan (0.0054 mg L−1). The cytotoxicity test showed that compared with chitosan and C2-benzaldehyde Schiff bases of chitosan, the prepared chitosan derivatives had lower cytotoxicity against SCG-7901. This paper provided a new method for the synthesis of Schiff bases of chitosan, which was enlightening. [ABSTRACT FROM AUTHOR]

C 6 -Schiff bases derivatives of chitosan were synthesized for the first time. C 2 -amino groups and C 3 -hydroxy groups were firstly protected by CuSO 4 ·5H 2 O, and the C 6 -hydroxy was then transformed into aldehyde, which then reacted with anilines through nucleophilic addition to introduce the C N group at C 6 -position in chitosan chain. Finally, C 6 -Schiff bases derivatives of chitosan were got by the deprotection of C 2 -NH 2 with cation exchange resin. The structures and properties of the new synthesized products were characterized by Fourier transform infrared spectroscopy, 13 C NMR, SEM image, and elemental analysis. The antibacterial activities of derivatives were tested in the experiment, and the results showed that the prepared chitosan derivatives had significantly improved antibacterial activity toward Staphylococcus aureus and Escherichia coli . The Cytotoxicity test showed that the prepared chitosan derivatives had low Cytotoxicity, compared with chitosan and C 2 -benzaldehyde Schiff bases of chitosan. This paper allowed a new method for the synthesis of Schiff bases of chitosan, which was enlightening. [ABSTRACT FROM AUTHOR]

Abstract: Two new mononuclear complexes, [Co(L−)2(H2O)2] (1) and [Ni(L−)2(H2O)2] (2) (HL=3-methyl-4-nitro-1-phenyl-5-pyrazolone), have been synthesized by the solvothermal reaction of Co(NO3)2 or Ni(NO3)2 with MPP (MPP=3-methyl-1-phenyl-5-pyrazolone) in acetonitrile solution, and the ligand HL was generated in-situ through the nitration of MPP mediated by cobalt or nickel nitrate rather than mixture acids. Single crystal X-ray diffraction of 1 reveals that 1 consists of one Co(II), two L− and two coordinated water molecules, and Co(II) adopts slightly octahedral geometry. Through intermolecular hydrogen bonding interactions, 1 presents two-dimensional network. Furthermore, the plausible nitration mechanism of MPP was also discussed. [Copyright &y& Elsevier]

In this paper, by a simple hydrothermal method vertically aligned ZnO nanorod arrays were grown on the carbon fiber paper (CFP) and then through a facile chemical bath deposition method CuO nanosheets were loaded on ZnO nanorod arrays, following by thermal spraying method, carboxylated carbon nanotubes (CCNTs) were successfully integrated with CuO/ZnO@CFP to form a binder-free CuO/ZnO-CCNT@CFP sensor. The sensor shows enhanced sensing activity for baicalein and luteolin determination due to the improved structural integration and synergism of different electrode material components. Remarkably, the CuO/ZnO-CCNT@CFP sensor showed good linear relationships over wide concentration ranges of 0.03–0.70 µM and 0.70–20 µM for baicalein and 0.03–0.45 µM and 0.45–8.5 µM for luteolin detection, with the detection limits of 1.7 nM for baicalein and 0.5 nM for luteolin, respectively. More importantly, the CuO/ZnO-CCNT@CFP sensor was utilized in the simultaneous determination of baicalein and luteolin, delivering linear ranges of 0.4–14 µM (baicalein) and 0.2–6 µM (luteolin) with the limit of detection of 0.05 µM and 0.03 µM, respectively. In addition, the developed CuO/ZnO-CCNT@CFP electrode was further investigated to detect baicalein and luteolin in traditional herbal medicine samples, showing satisfied results in comparison with analytic results from high performance liquid chromatography. [ABSTRACT FROM AUTHOR]

In this paper, a facial strategy is employed to directly growing ZnO nanorods (ZnONR) on carbon fiber paper (CFP) and functionalizing with silver nanoparticles (AgNP), constructing a structural stable paper-based electrode (AgNP/ZnONR@CFP). This unique AgNP/ZnONR hierarchical nanoarchitecture provides large surface area and an easy substrate penetrable structure facilitating enhanced electrochemical features towards flavonoids oxidation. When the electrode is evaluated as a binder-free sensor for flavonoids detection, three distinct and separate differential pulse voltammetric peaks for luteolin, daidzein, and baicalein are observed, demonstrating the simultaneous and selective detection of these flavonoids possible. The AgNP/ZnONR@CFP sensor demonstrates a remarkable wide linear relationship with low detection limits for luteolin, daidzein, and baicalein detection in a mixed solution. When the sensor is employed to analyze luteolin, daidzein, or baicalein in real extracts from Japanese Honeysuckle, Soybean, and Chrysanthemum morifolium, satisfactory recovery rates (ranging from 96.3 % to 102.5 %) and low relative standard deviation (RSD) values (less than 5.0 %) are obtained. In addition, an assembled sensor device (two-electrode) based on this trimmable AgNP/ZnONR@CFP electrode exhibits remarkable quick response and excellent sensitivity for luteolin, daidzein, or baicalein detection, facilitating real-time and portable detection, highlighting its great potential in batch production of the sensor devices. [Display omitted] • A binder-free electrode is prepared for simultaneous luteolin, daidzein and baicalein detection. • The sensor exhibits high activity with wide linear range and low detection limit. • A two-electrode sensor device is assembled using the AgNP/ZnONR@CFP electrode. • The novel sensor device allows real-time, portable detection and paves the way for mass production. [ABSTRACT FROM AUTHOR]

Nanoscale zero-valent iron particles (NZVIs) were well dispersed into the mesopores of ordered mesoporous carbon (OMC). Structure characterization of the obtained NZVIs/OMC composites found that OMC mesopores could remarkably keep NZVIs from aggregation and effectively alleviate iron oxidation. Batch experiments for Cr(VI) and As(V) removal were employed to evaluate activity of NZVIs/OMC. Results showed that either Cr(VI) or As(V) in aqueous, got nearly 100% uptake by NZVIs/OMC, which was higher than that by NZVIs. Both Cr(VI) and As(V) removal showed little dependence on solution pH, and their kinetic models were fitted the pseudo first-order model with the K obs 0.419 min−1 of Cr(VI) and 0.820 min−1 of As(V), which was 34–28 times of K obs on NZVIs. Mechanism of Cr(VI) and As(V) removal by NZVIs/OMC included adsorption process and reduction process between the immobilized NZVIs and the adsorbed contaminant inside the mesopores of OMC. The intra-particle diffusion was the control process during the adsorption step. Chemical reduction presented an important role in the removal process. The adsorbed Cr(VI) was remarkably reduced to Cr(III) in forms of FeCr 2 O 4 and Cr(OH) 3. As(V) was rapidly adsorbed by the composite and gradually reduced to As(III). Unlabelled Image • NZVIs were immobilized inside the mesopores of OMC under a mild condition. • Mesopores of OMC could keep NZVIs from aggregation and alleviate iron oxidation. • Cr(VI) and As(V) were got nearly 100% uptake by NZVIs/OMC within less time. • Cr(VI) and As(V) removal by NZVIs/OMC showed little dependence on solution pH. • Mechanism of Cr(VI) and As(V) removal by NZVIs/OMC was presumed. [ABSTRACT FROM AUTHOR]

Flexible and free-standing sulfonated graphene-polypyrrole-polyethylene glycol (SGE-PPy-PEG) foam electrodes were prepared via one-step electrodeposition process, exploiting coupling between negatively charged sulfate groups and positively charged pyrrole rings, followed with the sacrifice step of inner Ni foam structure. The resulted SGE-PPy-PEG foam electrodes were fully characterized before they were assembled into wearable supercapacitors. A typical foam electrode shows a significant specific capacitance of 528 Fg-1 aligned with excellent electrochemical durability (93% capacitance retention after 8000 charge-discharge cycles) in a standard three electrode system. When assembled as a single symmetric supercapacitor device (SSC), it also exhibits remarkable specific capacitance (per area/per volume) of 212.4 mFcm−2/1416 mFcm−3 and retains 94% capacitance after 4000 cycles. Furthermore, there is no observed negligible capacitance loss under various bending degrees up to ±180 °C, a demo of extraordinary mechanical flexibility. A rolled-up device, made from a long strip of SGE-PPy-PEG foam electrode, is able to power a red light-emitting diode light for more than 1 min after fully charged. Moreover, three SCs connected in series as a wrist band can successfully light up six colorful LED, demonstrating the great potential of flexible SGE-PPy-PEG foam in real wearable applications. [Display omitted] • Flexible & free-standing foam electrodes were prepared via electrodeposition process. • The foam electrode shows a large specific capacitance with excellent durability. • An all solid state device was fabricated showing exceptional flexibility. • Three SCs connected in series as a wrist band can light up six colorful LED. [ABSTRACT FROM AUTHOR]

Cationic methylene blue (MB) was intercalated into layered semiconductor KLaNb 2 O 7 for the first time by the ion-exchange method. MB + forms an inclined monolayer between LaNb 2 O 7 − nanosheets and the nanocomposite exhibited a pair of characteristic redox peaks of MB + cation. The nanocomposite was proved to be capable of immobilizing glucose oxidase (GOD) and facilitate catalytic activities of GOD. The MB + –LaNb 2 O 7 /GOD/CTS/GCE biosensor we constructed showed high electrochemical catalytic activities towards oxidation of glucose with the existence of oxygen. The biosensor had a linear range on detection of glucose from 2.5×10 −5 M to 2.83×10 −3 M and a detection limit of 2.0×10 −5 M. [ABSTRACT FROM AUTHOR]

• Novel NMCZ-x heterostructure photocatalysts are synthesized for the first time. • The development of preferred orientation in CZ-0.1 by adjusting the 2D Ni-MOFs content. • Synergy between Cu doping and catalytic platform makes better PHE activity. • Efficient H 2 evolution and excellent stability are realized over NMCZ-10 composite. • The photocatalytic mechanism of 2D MOFs and Pt as double co-catalysts is revealed. Doping strategy has been widely studied and applied to design visible light driven photocatalysts, which can introduce defect level and modulate the band structure of photocatalysts to improve the photocatalytic activity. In addition, it is of great significance to introduce a catalytic platform in the photocatalytic H 2 evolution (PHE) system, which can also greatly improve the photogenerated carriers transport capacity. As is known to all, 2D materials have been proven to be crucial platform for PHE reactions. In view of this, we have successfully prepared the 2D Ni-MOFs/Cu-doped Zn 0.5 Cd 0.5 S-x (abbreviated as NMCZ-x) heterojunction with the preferential orientation of crystals, which endows the catalyst with extremely excellent PHE activity and chemical stability. DFT calculations indicated that Cu atoms served as the center of electron capture after substituting Zn atoms, and Cu doping will introduce defect level. The NMCZ-10 complex achieves the best PHE activity and superior structural stability. This work highlights the importance of the synergistic effect between element doping and catalytic platform for the preparation of advanced photocatalysts. [ABSTRACT FROM AUTHOR]