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The effect of risk perception and COVID‑19 anxiety in pregnancy on decision‑making via the Internet and prenatal care quality:A cross‑sectional multivariate analysis

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Journal of Integrative Nursing 2023年第1期5卷 27-32页

作者： Ayşe taştekin OUyABA Şehadet taŞKIN Obstetrics and Gynecology Nursing Faculty of Health SciencesAfyonkarahisar Health Sciences UniversityAfyonkarahisarTurkey Department of Nursing Balıklıgöl State HospitalSanliurfaTurkey

Background:Risk perception and COVID‑19 anxiety in pregnant women restrict access to health services,cause pregnant women to resort to alternative channels such as the Internet,and affect prenatal care quality(PCQ)***:The purpose of this study was to examine the effect of risk perception and COVID‑19 anxiety in pregnancy on decision‑making via the Internet(DMI)and PCQ with multivariate *** and Methods:This cross‑sectional study was conducted with 406 pregnant women selected using the convenience sampling method in a training and research hospital,in *** data were collected using the information form,the perception of pregnancy risk questionnaire,the Coronavirus Anxiety scale,the DMI scale,and the PCQ *** data obtained were subject to descriptive analysis and the multivariate analysis of ***:Approximately 24.9%of the pregnant women were found to have a high perception of risk and 18%had symptoms of COVID‑19 *** women with high COVID‑19 anxiety and a higher perception of risk perceived the Internet as less influential for decision‑making(Psk perception had lower PCQ(Psion:The findings can be used to enhance mental health and resilience in pregnant women and to formulate appropriate intervention strategies.

关键词： COVID-19 anxiety decision-making via the Internet perception of risk pregnancy prenatal care quality

Co_3O_4 nanosheets:synthesis and catalytic application for CO oxidation at room temperature

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science China Chemistry 2014年第6期57卷 873-880页

作者： LV yongGe LI yong ta Na sHEN WenJie state Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences

Hexagonal β-Co(OH)2 nanosheets with edge length of 50 nm and thickness of 10 nm were hydrothermally synthesized with the aid of *** calcination at 350°C in air,the β-Co(OH)2 nanosheets was converted into Co3O4 nanosheets with a similar *** analyses during the calcination process identified that the β-Co(OH)2 precursor was initially dehydrated to HCoO2 and subsequently transferred into *** being applied to catalyze CO oxidation at room temperature,the Co3O4 nanosheets exhibited a higher activity than the conventional spherical *** was perhaps related to the partial exposure of the{112}planes over the Co3O4 *** porous structure generated during the calcination process also provided significant amounts of surface defects,which might contribute to the enhanced catalytic activity as well.

关键词： Co3O4 nanosheets CO oxidation morphology-dependence nanocatalysis

Discrepancy among microsatellite instability detection methodologies in non-colorectal cancer:Report of 3 cases

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World Journal of Clinical Cases 2023年第13期11卷 3105-3113页

作者： elifŞenocak taşçı İbrahim yıldız sibel Erdamar LeylaÖzer Department of Medical Oncology Acıbadem MAA UniversityIstanbul 12345Turkey Department of Pathology Acıbadem MAA UniversityIstanbul 12345Turkey

BACKGROUND Microsatellite instability(MsI)is a predictive biomarker for cancer *** tumor-agnostic nature of MsI makes it a denominator for immunotherapy in several solid *** can be assessed using next-generation sequencing(NGs),fluorescent multiplex PCR,and immunohistochemistry(IHC).CAsE sUMMARy Here,we report 3 cases with discordant MsI results detected using different methods.A cholangiocellular carcinoma case revealed proficient mismatch repair(MMR)by IHC but high MsI(MsI-H)by liquid NGs.A cervical cancer case revealed deficient MMR by IHC,microsatellite stable by PCR,and MsI-H by ***,an endometrial cancer case revealed proficient MMR by IHC but MsI-H by *** IHC for MMR status is the first choice due to several ***,in cases of indeterminate IHC results,molecular testing by MsI-PCR is ***,NGs-based MsI assays are being widely used to detect MsI-H *** three methods have high accuracy;however,the inconsistencies between them may lead to misdiagnosis.

关键词： Discordance Immunohistochemistry Microsatellite instability Nextgeneration sequencing Case report

Effect of selected signals of interest on ultrasonic backscattering measurement in cancellous bones

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science China(Physics,Mechanics & Astronomy) 2013年第7期56卷 1310-1316页

作者： LIU ChengCheng HAN HaiJie ta DeAn WANG WeiQi Department of electronic Engineering Fudan University

This study examined how the signals of interest （sOI） effect on the backscattering measurement numerically based on 3-D finite-difference time-domain （FDTD） method. High resolution microstructure mappings of bovine cancellous bones provided by micro-CT were used as the input geometry for simulations. Backscatter coefficient （BsC）, integrated backscatter coefficient （IBC） and apparent integrated backscatter （AIB） were calculated with changing the start （L1） and duration （L2） of the sOl. The results demonstrated that BsC and IBC decrease as L1 increases, and AIB decreases more rapidly as L1 increases. The backscattering parameters increase with fluctuations as a function of L2 when L2 is less than 6 mm. However, BsC and IBC change little as L2 continues to increase, while AIB slowly decreases as L2 continues to increase. The results showed how the selections of the sOI effect on the backscattering measurement. An explicit standard for sOl selection was proposed in this study and short L1 （about 1.5 mm） and appropriate L2 （6 mm-12 mm） were recommended for the calculations of backscattering parameters.

关键词： ultrasonic backscattering cancellous bone FDTD simulation signals of interest backscattering parameters

Nonfactorizable B→xcoK Decay and QCD Factorization

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Communications in Theoretical Physics 2007年第5X期48卷 885-890页

作者： MENG Ce GAO ying-Jia CHAO Kuang-ta Department of Physics Peking University Beijing 100871 China China Center of Advanced science and Technology (World Laboratory) Beijing 100080 China

We study the unexpectedly large rate for the factorization-forbidden decay B →xcoK within the QCD factorization approach. We use a non-zero gluon mass to regularize the infrared divergences in vertex corrections. The end-point singularities arising from spectator corrections are regularized and carefully estimated by the off-shellness of quarks. We find that the contributions arising from the vertex and leading-twist spectator corrections are numerically small, and the twist-3 spectator contribution with chiral enhancement and linear end-point singularity becomes dominant. With reasonable choices for the parameters, the branching ratio for B → XcoK decay is estimated to be in the range （2 ～ 4）× 10^-4, which is compatible with the Belle and BaBar data.

关键词： B meson decay QCD factorization charmonium

Joint spectrogram segmentation and ridge-extraction method for separating multimodal guided waves in long bones

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science China(Physics,Mechanics & Astronomy) 2013年第7期56卷 1317-1323页

作者： ZHANG ZhengGang XU KaiLiang ta DeAn WANG WeiQi Department of electronic Engineering Fudan University

Ultrasonic guided waves (GWs) can be used to evaluate long bones effectively because of the ability to provide the information of the whole bone. In this study, a joint spectrogram segmentation and ridge-extraction (JssRE) method was proposed to separate multiple modes in long bones. First, the Gabor time-frequency transform was applied to obtain the spectrogram of multimodal signals. Then, a multi-class image segmentation algorithm was used to find the corresponding region of each mode in the spectrogram, including an improved watershed transform and a region growing procedure. Finally, the ridges were extracted and the time domain signals representing individual modes were reconstructed from these ridges in each region. The validations of this method were discussed by simulated multimodal signals with different signal-to-noise ratios (sNR). The correlation coefficients between the original signals without noise and the reconstructed signals were calculated to analyze the results quantitatively. The results showed that the extracted ridges were in good agreement with generated theoretical dispersion curves, and the reconstructed signals were highly related to the original signals, even under the sNR=3 dB situation.

关键词： multimodal guided waves long bone spectrogram segmentation

Inhibition of cell proliferation and migration by Oroxylum indicum extracts on breast cancer cells via Rac1 modulation

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Journal of Pharmaceutical Analysis 2020年第2期10卷 187-193页

作者： Benjaporn Buranrat sirintra Noiwetch Tippaporn suksar Aphimook ta-ut MD Program Faculty of MedicineMahasarakham UniversityMuang DistrictMaha Sarakham44000Thailand Applied Thai Traditional Medicine Program Faculty of MedicineMahasarakham UniversityMuang DistrictMaha Sarakham44000Thailand

In this study,we investigated how Oroxylum indicum leaf and fruit extracts affect the viability and migration of MCF-7 breast cancer cells and the mechanisms of action responsible for these ***-7 cells treated with the extracts were examined using the sulforhodamine B,colony formation and caspase 3 activity assays,and by Western *** extracts were found to inhibit MCF-7 cell growth in a concentration-and time-dependent manner,with 48 h IC50 values of 57.02±2.85μg/mL and 131.3±19.2μg/mL for leaf and fruit extracts,***,the *** leaf extract caused a reduction in MCF-7 cell viability,induction of MCF-7 cell apoptosis and ROs formation,and an increase in caspase 3 ***,the two extracts inhibited MCF-7 cell migration and reduced both MMP 9 and ICAMP1 gene expression and MMP9 protein ***,*** extracts greatly reduced expression of the cell cycle regulatory protein Rac1 in the mevalonate *** summary,*** leaf and fruit extracts reduce breast cancer cell growth,cell viability and cell *** constituents could,therefore,be useful for augmenting the activity of chemotherapeutic drugs employed to treat breast cancer.

关键词： Oroxylum indicum Reactive oxygen species(ROs) Migration Cell viability Matrix metalloproteinase(MMP) Apoptosis

Location and Trajectory Identification from Microblogs

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Journal of Computer science & Technology 2019年第4期34卷 727-746页

作者： Na ta Guo-Liang Li Jun Hu Jian-Hua Feng school of Journalism and Communication Renmin University of ChinaBeijing 100872China Department of Computer science and Technology Tsinghua UniversityBeijing 100084China Airbnb Network(Beijing)Inc. Beijing 100020China

The rapid development of social networks has resulted in a proliferation of user-generated content(UGC),which can benefit many *** this paper,we study the problem of identifying a user's locations from microblogs,to facilitate effective location-based advertisement and *** the location information in a microblog is incomplete,we cannot get an accurate location from a local *** such,we propose a global location identification method,*** combines multiple microblogs of a user and utilizes them to identify the user's *** not only improves the quality of identifying a user's location but also supplements the location of a microblog so as to obtain an accurate location of a *** facilitate location identification,Glitter organizes points of interest(POIs)into a tree structure where leaf nodes are POIs and non-leaf nodes are segments of POIs,e.g.,countries,cities,and *** the tree structure,Glitter first extracts candidate locations from each microblog of a user which correspond to some tree *** Glitter aggregates these candidate locations and identifies top-κlocations of the *** the identified top-κuser locations,Glitter refines the candidate locations and computes top-κlocations of each *** achieve high recall,we enable fuzzy matching between locations and *** propose an incremental algorithm to support dynamic updates of *** also study how to identify users'trajectories based on the extracted *** propose an effective algorithm to extract high-quality *** results on real-world datasets show that our method achieves high quality and good performance,and scales well.

关键词： location identification microblog trajectory identification

In vivo optical quality of posterior-chamber phakic implantable collamer lenses with a central port

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Eye and Vision 2021年第5期8卷 295-302页

作者： Robert Montés-Micó Francisco Pastor-Pascual Enrique Artiaga-elordi Ramón Ruiz-Mesa Pedro tañá-Rivero Optics and Optometry&Vision sciences Department University of Valenciac/o Dr Moliner 5046100 ValenciaSpain Oftalvist Clinic ValenciaSpain

Background:The aim of this review is to summarize the optical quality results in patients following the implantation of the V4c implantable collamer lens with a central port(ICL,staAR surgical Inc.).Main text:A literature search in several databases was carried out to identify those publications,both prospective,retrospective and/or comparative with other refractive surgery procedures,reporting optical outcomes of patients who were implanted with the V4c ICL model.A total of 17 clinical studies published between 2012 and 2021 were included in this review.A detailed analysis of the available data was performed including number of eyes,follow-up and preoperative spherical ***,the review focused on several optical parameters including higher-order aberrations(HOAs),modulation transfer function(MTF)cut-off frequency and strehl *** review encompassed a total of 817 eyes measured using different optical devices based on Hartmann-shack,retinal image quality measurement and ray-tracing technologies at different ***:The outcomes found in this review lead us to conclude that the ICL V4c model provides good optical quality,by means of different metrics,when implanted.

关键词： Implantable collamer lens Phakic Optical quality Higher order aberrations Modulation transfer function