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This study develops a self‐powered fire alarm system that utilizes a sandwich‐like self‐powered fire sensor (SSFS) with a simple system to prevent room fires. The SSFS is small, flame‐retardant, and can be easily installed on furniture or doors. The SSFS uses a nanogenerator constructed by poly(vinylidenefluoride‐co‐trifluoroethylene) (PVDF‐TrFE) nanofibers and a flexible printed circuit board (FPCB) to produce electrical power by harvesting motion energy. This nanogenerator can fully charge capacitors in a few minutes and produces a maximum voltage output of 6.47 V. The SSFS also features two flame‐retardant melamine foams (MFs) coated with graphene oxide (GO) and a chitosan multilayer nanocoating that is fabricated by layer‐by‐layer technology (LBL technology). While encountering a high‐temperature situation, the electrical state of MFs changes from insulated to conductive, triggering the fire alarm light in about four seconds. The sandwich‐like design allows the SSFS to respond to a variety of fire alarm situations, especially in the case where both the top and bottom of the fire alarm sensor are exposed to flame (bilateral fire burning). It is such an innovative research to decrease the delay time of fire‐warning by using this sandwich‐like design fire sensor. The nanogenerator can keep the warning working for 22 s after the initial trigger, which produces enough time to ensure people stay clear of the fire source. All in all, this study presents a novel approach to reducing the risk of building fires through a lightweight and self‐powered fire alarm system that harvests motion energy using piezoelectric nanogenerators (PENGs). [ABSTRACT FROM AUTHOR]

Objective: To compare the efficacy of minimally invasive pectopexy with I‐stop‐mini (MPI) and minimally invasive sacrocolpopexy with Obtryx (MSO). Methods: Women with pelvic organ prolapse quantification (POP‐Q) stage III or more and overt stress urinary incontinence from May 2018 to May 2021 were included. Patients with meshes fixed on the cervix or vaginal vault and bilateral pectineal ligament with I‐stop‐mini were classified into the MPI group, while those fixed on the apex and sacral promontory with Obtryx were classified into the MSO group. The primary outcomes were 1‐year‐postoperative POP‐Q stage, patient‐reported urinary and prolapse outcomes (Urogenital Distress Inventory‐6, International Consultation on Incontinence Questionnaire‐Short Form, and Pelvic Organ Prolapse Distress Inventory‐6), 1‐h pad test, and sexual life quality (Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire). Secondary outcomes included operative data and adverse events. Results: The efficacy of MPI was similar to that of MSO according to the primary outcomes. MPI had shorter operative times (133.4 ± 30.6 min versus 199.3 ± 20.9 min, P = 0.001) and lower incidence rate of abdominal pain (0% vs 20%, P = 0.02) and groin pain (8% vs 40%, P = 0.01) than MSO. Conclusions: MPI showed similar efficacy to MSO, but demonstrated shorter operative times and lower incidence rates of abdominal and groin pain. Synopsis: Efficacy of minimally invasive pectopexy with I‐stop‐mini was similar to that of sacrocolpopexy and Obtryx at the 1‐year follow up. [ABSTRACT FROM AUTHOR]

This article demonstrates spatial mapping of the local and nanoscale structure of thin film objects using spatially resolved pair distribution function (PDF) analysis of synchrotron X‐ray diffraction data. This is exemplified in a lab‐on‐chip combinatorial array of sample spots containing catalytically interesting nanoparticles deposited from liquid precursors using an ink‐jet liquid‐handling system. A software implementation is presented of the whole protocol, including an approach for automated data acquisition and analysis using the atomic PDF method. The protocol software can handle semi‐automated data reduction, normalization and modeling, with user‐defined recipes generating a comprehensive collection of metadata and analysis results. By slicing the collection using included functions, it is possible to build images of different contrast features chosen by the user, giving insights into different aspects of the local structure. [ABSTRACT FROM AUTHOR]

Machine learning models based on convolutional neural networks have been used for predicting space groups of crystal structures from their atomic pair distribution function (PDF). However, the PDFs used to train the model are calculated using a fixed set of parameters that reflect specific experimental conditions, and the accuracy of the model when given PDFs generated with different choices of these parameters is unknown. In this work, the results of the top‐1 accuracy and top‐6 accuracy are robust when applied to PDFs of different choices of experimental parameters rmax, Qmax, Qdamp and atomic displacement parameters. [ABSTRACT FROM AUTHOR]

A cloud‐hosted web‐based software application, nmfMapping, for carrying out a non‐negative matrix factorization of a set of powder diffraction or atomic pair distribution function datasets is described. This application allows structure scientists to find trends rapidly in sets of related data such as from in situ and operando diffraction experiments. The application is easy to use and does not require any programming expertise. It is available at https://pdfitc.org/. [ABSTRACT FROM AUTHOR]

Developing feasible strategies to utilize CO2 as a C1 synthon for constructing various valued‐added chemical feedstock is crucial for alleviating the global warning and achieving a carbon‐neutral cycle. The coupling between epoxide and carbon dioxide is a promising direction due to the large driving force for the formation of thermodynamically stable cyclic carbonate and its 100% atom‐economy efficiency. Despite numerous metal‐based complexes that have been reported to facilitate this coupling reaction catalytically, harsh conditions (high temperature and pressure) are usually required. In this study, the synthesis and structural/spectroscopic characterizations of oxovanadium(V) complexes 2a–2f chelated with one‐step synthesized hydrazone‐imidate ligands were reported. The catalytic performance of the synthesized oxovanadium(V) complexes regarding the coupling reaction between epoxide and CO2 was successfully demonstrated with only 0.5 mol% loading of both oxovanadium(V) catalyst and [NBu4][Br] at 80°C under 1 bar of CO2. The substrate scope containing both terminal epoxide derivative and internal epoxide derivative indicates that the oxovanadium(V) catalysts could exert efficient catalytic coupling reaction of terminal epoxide (63 ~ 85% conversion rates) under ambient pressure of CO2. [ABSTRACT FROM AUTHOR]

Background Objectives Search Strategy Selection Criteria Data Collection and Analysis Main Results Conclusions Bevacizumab serves as an effective treatment in cervical cancer patients with metastatic, recurrent, or advanced disease. However, gastrointestinal (GI)/genitourinary (GU) toxicities have been observed after bevacizumab treatment. Radiotherapy (RT) is the mainstay of treatment of cervical cancer.To investigate the risk of GI/GU toxicities with bevacizumab plus RT compared with RT alone in cervical cancer patients.In this meta‐analysis, PubMed, Embase, Web of Science, and Cochrane databases were searched from inception to September 25, 2022.Cohort studies evaluating the association between bevacizumab and GI/GU fistula or perforation in irradiated metastatic, recurrent, or advanced cervical cancer patients.Results are expressed as odds ratios (OR) with 95% confidence intervals (CI). The inconsistency test (I2) was used to assess heterogeneity. Egger's regression test with a two‐tailed P value was used to evaluate publication bias.Four cohort studies met the inclusion criteria with a total of 597 women included. There was a significant association between GI fistula/perforation and GU fistula/perforation in irradiated cervical cancer patients receiving bevacizumab (OR 4.03 [95% CI: 1.76–9.20] and OR 4.71 [95% CI: 1.51–14.70], respectively).The bevacizumab‐containing regimen was associated with an increased risk of GI or GU toxicities in cervical cancer individuals undergoing pelvic RT. These results suggest the bevacizumab‐associated benefits and risk should be better weighted to reach an optimal treatment strategy. Further investigation on optimal dosage and timing of bevacizumab and RT is vital to minimize the adverse events and maximize the benefits. [ABSTRACT FROM AUTHOR]