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Premature Termination of Treatment among Adults Attending Treatment for Eating Disorders: A Critical Review
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作者 Flávia Machado Seidinger-Leibovitz Adams Rodrigues Malta +5 位作者 Larissa Rodrigues Rodrigo Almeida Bastos Pedro Augusto Thiene Leme Daniela Ferreira Araújo Silva Egberto Ribeiro Turato Carla Maria Vieira 《Open Journal of Medical Psychology》 2020年第3期123-140,共18页
The article presents a critical review regarding the premature termination of eating disorder’s treatment among inpatients and outpatients, with the aim of identifying—emotional, psychodynamic and family-related asp... The article presents a critical review regarding the premature termination of eating disorder’s treatment among inpatients and outpatients, with the aim of identifying—emotional, psychodynamic and family-related aspects involved. The search strategy used the following MeSH terms combined by Boolean operators: “eating disorders” AND “treatment” OR “patient dropouts” OR “drop-out/dropouts” OR “attrition” OR “premature termination” AND “empirical study” OR “qualitative research”, for on Medline/PUBMED, PsycINFO and EMBASE databases. This article follows the PRISMA Guidelines. A total of 26 studies composed this review, of which 24 were original research articles, 1 was a review and 1 a theoretical article. Only two articles applied qualitative methods analyzing categories of content obtained by in-depth interviews, three combine quantitative and qualitative methods and other three present qualitative analyses while discussing quantitative studies. Further qualitative studies should be carried out to clarify meanings of dropout, premature termination of treatment, and attrition. Different expectations held by patients and by therapeutic teams, and the interpersonal difficulties of these types of patients, stand out as difficulties in constructing “therapeutic alliances”, with impacts on dropout, premature termination and attrition rates. 展开更多
关键词 Eating Disorders ADULTS Patient Dropouts Attrition premature Termination of Treatment INPATIENTS OUTPATIENTS
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Rice melatonin deficiency causes premature leaf senescence via DNA methylation regulation
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作者 Yue Lu Ahmed Gharib +15 位作者 Rujia Chen Hanyao Wang Tianyun Tao Zhihao Zuo Qing Bu Yanze Su Yaoqing Li Yanmo Luo Hamdi F.El-Mowafi Zhichao Wang Qianfeng Huang Shuting Wang Yang Xu Pengcheng Li Chenwu Xu Zefeng Yang 《The Crop Journal》 SCIE CSCD 2024年第3期721-731,共11页
In a study of DNA methylation changes in melatonin-deficient rice mutants,mutant plants showed premature leaf senescence during grain-filling and reduced grain yield.Melatonin deficiency led to transcriptional reprogr... In a study of DNA methylation changes in melatonin-deficient rice mutants,mutant plants showed premature leaf senescence during grain-filling and reduced grain yield.Melatonin deficiency led to transcriptional reprogramming,especially of genes involved in chlorophyll and carbon metabolism,redox regulation,and transcriptional regulation,during dark-induced leaf senescence.Hypomethylation of mCG and mCHG in the melatonin-deficient rice mutants was associated with the expression change of both protein-coding genes and transposable element-related genes.Changes in gene expression and DNA methylation in the melatonin-deficient mutants were compensated by exogenous application of melatonin.A decreased S-adenosyl-L-methionine level may have contributed to the DNA methylation variations in rice mutants of melatonin deficiency under dark conditions. 展开更多
关键词 MELATONIN premature leaf senescence RICE DNA methylation Epigenetic regulation
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Current Status of Stem Cells in the Treatment of Premature Ovarian Failure
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作者 Guojie Ji Huanhuan Hu +3 位作者 Rui Liu Guanjie Li Jiangshan Zhao Huigen Feng 《Journal of Biosciences and Medicines》 2024年第7期263-280,共18页
Premature ovarian failure (POF) is a prevalent cause of female infertility. POF features include estrogen hypofunction, amenorrhea, infertility, and high gonadotropin levels. The etiology of POF is genetic diseases, a... Premature ovarian failure (POF) is a prevalent cause of female infertility. POF features include estrogen hypofunction, amenorrhea, infertility, and high gonadotropin levels. The etiology of POF is genetic diseases, autoimmune diseases, enzyme defects and environmental factors. The development of Regenerative medicine has made stem cell and exosome (EXOs) therapy effective for POF. This review discusses POF stem cell research and development. 展开更多
关键词 ETIOLOGY INFERTILITY premature Ovarian Failure Regenerative Medicine Stem Cells
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Application of mesenchymal stem cell therapy for premature ovarian insufficiency: Recent advances from mechanisms to therapeutics
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作者 Hang-Qi Hu Xi-Yan Xin +4 位作者 Yu-Tian Zhu Rui-Wen Fan Hao-Lin Zhang Yang Ye Dong Li 《World Journal of Stem Cells》 SCIE 2024年第1期1-6,共6页
The incidence of premature ovarian insufficiency(POI)is increasing worldwide,particularly among younger women,posing a significant challenge to fertility.In addition to menopausal symptoms,POI leads to several complic... The incidence of premature ovarian insufficiency(POI)is increasing worldwide,particularly among younger women,posing a significant challenge to fertility.In addition to menopausal symptoms,POI leads to several complications that profoundly affect female reproductive function and overall health.Unfortunately,current clinical treatment strategies for this condition are limited and often yield unsatisfactory outcomes.These approaches typically involve hormone repla-cement therapy combined with psychological support.Recently,mesenchymal stem cell(MSC)therapies for POI have garnered considerable attention in global research.MSCs can restore ovarian reproductive and endocrine functions through diverse mechanisms,including controlling differentiation,promoting angiogenesis,regulating ovarian fibrosis,inhibiting apoptosis,enhancing autocrine and paracrine effects,suppressing inflammation,modulating the immune system,and genetic regulation.This editorial offers a succinct summary of the application of MSC therapy in the context of POI,providing evidence for groundbreaking medical approaches that have potential to enhance reproductive health and overall well-being for women. 展开更多
关键词 Mesenchymal stem cell therapy Mechanism premature ovarian insufficiency THERAPEUTIC WOMEN
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Significance of oxidative stress and antioxidant capacity tests as biomarkers of premature ovarian insufficiency: A case control study
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作者 Kaoru Kakinuma Toshiyuki Kakinuma 《World Journal of Clinical Cases》 SCIE 2024年第3期479-487,共9页
BACKGROUND Premature ovarian insufficiency(POI)is a condition that causes secondary amenorrhea owing to ovarian hypofunction at an early stage.Early follicular depletion results in intractable infertility,thereby cons... BACKGROUND Premature ovarian insufficiency(POI)is a condition that causes secondary amenorrhea owing to ovarian hypofunction at an early stage.Early follicular depletion results in intractable infertility,thereby considerably reducing the quality of life of females.Given the continuum in weakened ovarian function,progressing from incipient ovarian failure(IOF)to transitional ovarian failure and further to POI,it is necessary to develop biomarkers for predicting POI.The oxidative stress states in IOF and POI were comprehensively evaluated via oxidative stress[diacron-reactive oxygen metabolites(d-ROMs)]test and anti-oxidant capacity[biological antioxidant potential(BAP)].METHODS Females presenting with secondary amenorrhea over 4 mo and a follicle stimulating hormone level of>40 mIU/mL were categorized into the POI group.Females presenting with a normal menstrual cycle and a follicle stimulating hormone level of>10.2 mIU/mL were categorized into the IOF group.Healthy females without ovarian hypofunction were categorized into the control group.Among females aged<40 years who visited our hospital from January 2021 to June 2022,we recruited 11 patients into both POI and IOF groups.For the potential antioxidant capacity,the relative oxidative stress index(BAP/d-ROMs×100)was calculated,and the oxidative stress defense system was comprehensively evaluated.RESULTS d-ROMs were significantly higher in the POI and IOF groups than in the control group,(478.2±58.7 U.CARR,434.5±60.6 U.CARR,and 341.1±35.1 U.CARR,respectively)(U.CARR is equivalent to 0.08 mg/dL of hydrogen peroxide).However,no significant difference was found between the POI and IOF groups.Regarding BAP,no significant difference was found between the control,IOF,and POI groups(2078.5±157.4μmol/L,2116.2±240.2μmol/L,and 2029.0±186.4μmol/L,respectively).The oxidative stress index was significantly higher in the POI and IOF groups than in the control group(23.7±3.3,20.7±3.6,and 16.5±2.1,respectively).However,no significant difference was found between the POI and IOF groups.CONCLUSION High levels of oxidative stress suggest that evaluating the oxidative stress state may be a useful indicator for the early detection of POI. 展开更多
关键词 premature ovarian insufficiency Oxidative stress Diacron-reactive oxygen metabolites test Biological antioxidant potential INFERTILITY BIOMARKER
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Exploration of standard dosage for GnRH antagonist protocol and dosage adjustments after premature luteinizing hormone surge
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作者 HAN Zhong-yi WU Ting-ting MA Yan-lin 《Journal of Hainan Medical University》 CAS 2024年第3期74-78,共5页
The gonadotropin-releasing hormone (GnRH) antagonist protocol has emerged as an efficacious alternative to the GnRH agonist protocol for controlled ovarian hyperstimulation (COH) during in vitro fertilization (IVF) cy... The gonadotropin-releasing hormone (GnRH) antagonist protocol has emerged as an efficacious alternative to the GnRH agonist protocol for controlled ovarian hyperstimulation (COH) during in vitro fertilization (IVF) cycles, and has been demonstrated applicability in infertile female patients with diverse ovarian responses. While the clinical implementation of the antagonist COH protocol has achieved widespread consensus, opportunities for refinement persist. Therefore, this review article focuses on the advantages and disadvantages of GnRH antagonist protocol, the selection of optimal standard doses, and the strategies for adjusting antagonist doses after the premature luteinizing hormone (LH) surge, aiming to provide more reasonable and scientific recommendations for the application of this scheme. 展开更多
关键词 GnRH antagonist protocol Optimal dosage premature LH surge
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Facilitating and hindering factors of community nurses'emergency and critical care treatment abilities:A qualitative study
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作者 Wen-Lin Cheng Rui Li +3 位作者 Yan Song Fei-Hu Qian Si-Yuan Sha Shuang-Yuan Song 《World Journal of Clinical Cases》 SCIE 2024年第18期3453-3460,共8页
BACKGROUND This study adopts a descriptive phenomenological approach to investigate the facilitators and barriers of community nurses'abilities in managing critical and emergency conditions.With the transition of ... BACKGROUND This study adopts a descriptive phenomenological approach to investigate the facilitators and barriers of community nurses'abilities in managing critical and emergency conditions.With the transition of healthcare systems to the community,the evolution of nursing practices,and the attention from policies and practices,community nurses play a crucial role in the management of critical and emergency conditions.However,there is still a lack of comprehensive understanding regarding the factors that promote or hinder their capabilities in this area.AIM To understand the facilitators and barriers of community nurses in managing critical and emergency conditions,exploring the fundamental reasons and driving forces influencing their treatment capabilities.METHODS This study utilized the destination sampling method between May 2023 and July 2023.It employed a descriptive phenomenological approach within qualitative research methodologies.Through objective sampling,17 community nurses from 7 communities in Changning District,Shanghai,were selected as the study subjects.Semi-structured interviews were conducted to gather data,which were subsequently organized and analyzed using Colaizzi's seven-step analysis method,leading to the extraction of final themes.RESULTS The barrier factors identified from the interviews encompassed three topics:resource allocation,professional factors,and personal literacy.The facilitators comprised three themes:professionalism,management attention,and training and continuing education.We identified that the root causes of the barriers included the lack of practical treatment experience among community nurses,insufficient awareness of self-directed learning,and limited knowledge and technical proficiency.The professional quality of community nurses and management attention serve as motivation for them to enhance their treatment abilities.CONCLUSION To enhance the capability of community nurses in treating acute and critical patients,it is recommended to bolster training specifically tailored to acute and critical care,raise awareness of first aid practices,and elevate knowledge and skill levels. 展开更多
关键词 Community nurse Acute and critical illness Promoting factors Obstacle factors Qualitative study
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Recent Research Progress in Premature Ovarian Failure
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作者 Yaping Meng Xi Xia +3 位作者 Wenjie Jiang Minghui Hao Ziqi Fan Yihang Song 《Journal of Clinical and Nursing Research》 2024年第7期274-281,共8页
Premature ovarian failure refers to ovarian function failure in women before the age of 40 years due to follicular depletion or follicular dysfunction resulting in abnormal hormone levels.The etiology and pathogenesis... Premature ovarian failure refers to ovarian function failure in women before the age of 40 years due to follicular depletion or follicular dysfunction resulting in abnormal hormone levels.The etiology and pathogenesis of premature ovarian failure may be related to genetic,immunological,medical,environmental,infectious,psychological and enzyme deficiencies.The treatment involves Western medicine,Chinese medicine,and a combination of Chinese and Western medicine,and the treatment level includes hormone level,cellular level,surgery and psychological aspect.This paper would like to review the progress of the etiology,pathogenesis and treatment of premature ovarian failure in recent years. 展开更多
关键词 premature ovarian failure ETIOLOGY PATHOGENESIS TREATMENT
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Research Progress on the Prevention of Premature Infant Lung Injury and Neonatal Respiratory Support
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作者 Jianghe Yu Simin Cai 《Expert Review of Chinese Medical》 2024年第1期18-21,共4页
In the past 40 years,advances in neonatal intensive care unit(NICU)technology have enabled premature infants with lower birth weight and younger gestational age to survive.But with it comes an increase in the incidenc... In the past 40 years,advances in neonatal intensive care unit(NICU)technology have enabled premature infants with lower birth weight and younger gestational age to survive.But with it comes an increase in the incidence of long-term respiratory dysfunction,mainly in the form of bronchopulmonary dysplasia(BPD).Preventing lung injury is crucial for preventing BPD and improving the long-term prognosis of premature infants.Therefore,how to avoid ventilator-associated lung injury has become a focus of clinical and scientific research in premature infants in recent years.This article will elaborate on the susceptibility and pathophysiology of premature infant lung injury,ventilation strategies for preventing lung injury,and new advances in neonatal respiratory support. 展开更多
关键词 premature infants lung injury respiratory support research progress
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The Research on Cross-Cultural Critical Thinking in English Teaching: A Pedagogical Paradigm Within the Ideological and Political Course Framework
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作者 MA Yuan HUANG Fengqiu 《Sino-US English Teaching》 2024年第3期99-103,共5页
The conflation of linguistic competencies with ideological and political educational paradigms presents unique opportunities and challenges for English language teaching(ELT)in our increasingly interconnected world.Th... The conflation of linguistic competencies with ideological and political educational paradigms presents unique opportunities and challenges for English language teaching(ELT)in our increasingly interconnected world.This research seeks to address the role of cross-cultural critical thinking within the landscape of English pedagogy,framed by the imperatives of ideological and political education.Employing a multi-method approach,including thematic content analysis and action research,the study proposes a pedagogical model designed to integrate transcultural discourse and ideologically reflective practices into the conventional ELT curriculum.This paper argues for a reimagined approach to teaching English that encourages students to engage with diverse cultural perspectives and develop a nuanced understanding of global issues. 展开更多
关键词 cross-cultural critical thinking English language teaching ideological and political education pedagogical paradigm transcultural discourse cultural awareness
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Study on the Accuracy of Serum Prealbumin Level in Predicting the Prognosis of Patients with Critical Respiratory Illness
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作者 Xiang Wang Zuozhou Xie +1 位作者 Jinhong Zhao Yi Liu 《Journal of Clinical and Nursing Research》 2024年第3期89-94,共6页
Objective: To analyze the accuracy of serum prealbumin levels in predicting the prognosis of patients with critical respiratory illness. Methods: Fifty patients with critical respiratory illness admitted to our hospit... Objective: To analyze the accuracy of serum prealbumin levels in predicting the prognosis of patients with critical respiratory illness. Methods: Fifty patients with critical respiratory illness admitted to our hospital from October 2022 to September 2023 were selected and divided into an observation group and a control group after condition assessment, with 25 cases in each group. The results of cholinesterase (ChE), prealbumin (PALB), albumin (ALB), aspartate aminotransferase (AST), total protein (TP), and forced expiratory volume (FEV1)/Predicted (Pred) of the two groups were measured. Results: The ChE levels of the observation group were lower than those of the control group, while the PALB and ALB levels of the observation group were higher than those of the control group (P < 0.05). The AST, TP, and FEV1 /Pred levels of the observation group were higher than those in the control group (P < 0.05). Conclusion: Serum PALB levels can be used as the main indicator for prognosis in critically ill respiratory patients. 展开更多
关键词 Serum prealbumin Respiratory critical illness Prognostic level ACCURACY
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A Multimodal Critical Discourse Analysis of Lingnan Cultural Promotional Videos on Social Media
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作者 Lu Jiang 《Journal of Contemporary Educational Research》 2024年第4期59-68,共10页
In recent years,more and more directors of culture and tourism have taken part in the promotion of local cultural tourism by cross-dressing,talent shows,and pushing their limits on self-media platforms.This study inve... In recent years,more and more directors of culture and tourism have taken part in the promotion of local cultural tourism by cross-dressing,talent shows,and pushing their limits on self-media platforms.This study investigates short videos of Lingnan culture promoted by directors general and deputy directors general of the Culture,Radio,Television,Tourism,and Sports Bureau of counties and cities in Guangdong Province on social media by the method of multimodal critical discourse analysis.The analysis of 33 videos shows that Lingnan culture is a domineering and confident culture,historical culture,graceful and elegant culture,and vibrant and active culture.Domineering and confident culture is embedded in the utterances and behaviors of the directors general or deputy directors general in the video.Historical culture is realized through the conversation with historical figures through time travel.Graceful and elegant culture is constructed in the depiction of sceneries and the depiction of characters’manners.Vibrant and active culture is represented in the depiction of the characters’actional process and analytical process. 展开更多
关键词 Lingnan culture Multimodal critical discourse analysis Promotional videos TikTok WeChat
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Semi-analytical solution for drained expansion analysis of a hollow cylinder of critical state soils 被引量:1
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作者 He Yang Jialiang Zhang +1 位作者 Haisui Yu Peizhi Zhuang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第6期2326-2340,共15页
The expansion of a thick-walled hollow cylinder in soil is of non-self-similar nature that the stress/deformation paths are not the same for different soil material points.As a result,this problem cannot be solved by ... The expansion of a thick-walled hollow cylinder in soil is of non-self-similar nature that the stress/deformation paths are not the same for different soil material points.As a result,this problem cannot be solved by the common self-similar-based similarity techniques.This paper proposes a novel,exact solution for rigorous drained expansion analysis of a hollow cylinder of critical state soils.Considering stress-dependent elastic moduli of soils,new analytical stress and displacement solutions for the nonself-similar problem are developed taking the small strain assumption in the elastic zone.In the plastic zone,the cavity expansion response is formulated into a set of first-order partial differential equations(PDEs)with the combination use of Eulerian and Lagrangian descriptions,and a novel solution algorithm is developed to efficiently solve this complex boundary value problem.The solution is presented in a general form and thus can be useful for a wide range of soils.With the new solution,the non-self-similar nature induced by the finite outer boundary is clearly demonstrated and highlighted,which is found to be greatly different to the behaviour of cavity expansion in infinite soil mass.The present solution may serve as a benchmark for verifying the performance of advanced numerical techniques with critical state soil models and be used to capture the finite boundary effect for pressuremeter tests in small-sized calibration chambers. 展开更多
关键词 Cavity expansion Drained analysis Boundary effect critical state soil Non-self-similar Eulerian-Lagrangian approach
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Predicted Critical State Based on Invariance of the Lyapunov Exponent in Dual Spaces
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作者 刘通 夏旭 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第1期68-76,共9页
Critical states in disordered systems,fascinating and subtle eigenstates,have attracted a lot of research interests.However,the nature of critical states is difficult to describe quantitatively,and in general,it canno... Critical states in disordered systems,fascinating and subtle eigenstates,have attracted a lot of research interests.However,the nature of critical states is difficult to describe quantitatively,and in general,it cannot predict a system that hosts the critical state.We propose an explicit criterion whereby the Lyapunov exponent of the critical state should be 0 simultaneously in dual spaces,namely the Lyapunov exponent remains invariant under the Fourier transform.With this criterion,we can exactly predict a one-dimensional quasiperiodic model which is not of self-duality,but hosts a large number of critical states.Then,we perform numerical verification of the theoretical prediction and display the self-similarity of the critical state.Due to computational complexity,calculations are not performed for higher dimensional models.However,since the description of extended and localized states by the Lyapunov exponent is universal and dimensionless,utilizing the Lyapunov exponent of dual spaces to describe critical states should also be universal.Finally,we conjecture that some kind of connection exists between the invariance of the Lyapunov exponent and conformal invariance,which can promote the research of critical phenomena. 展开更多
关键词 STATE EXPONENT critical
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Engineering Quantum Criticality for Quantum Dot Power Harvesting
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作者 王金义 年磊磊 吕京涛 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第2期14-25,共12页
Coupling of quantum-dot circuits to microwave photons enables us to investigate photon-assisted quantum transport.Here,we revisit this typical circuit quantum electrodynamical setup by introducing the Kerr nonlinearit... Coupling of quantum-dot circuits to microwave photons enables us to investigate photon-assisted quantum transport.Here,we revisit this typical circuit quantum electrodynamical setup by introducing the Kerr nonlinearity of photons.By exploiting quantum critical behavior,we propose a powerful scheme to control the power-harvesting efficiency in the microwave regime,where the driven-dissipative optical system acts as an energy pump.It drives electron transport against a load in the quantum-dot circuit.The energy transfer and,consequently,the harvesting efficiency are enhanced near the critical point.As the critical point moves towards to low input power,high efficiency within experimental parameters is achieved.Our results complement fundamental studies of photon-to-electron conversion at the nanoscale and provide practical guidance for designs of integrated photoelectric devices through quantum criticality. 展开更多
关键词 QUANTUM critical MICROWAVE
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Anisotropic s-Wave Gap in the Vicinity of a Quantum Critical Point in Superconducting BaFe_(2)(As_(1-x)P_(x))_(2) Single Crystals:A Study of Point-Contact Spectroscopy
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作者 詹红星 林玉尺 +8 位作者 赵宇清 左海艳 王兴玉 马肖燕 李春红 罗会仟 陈根富 李世亮 任聪 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第4期118-123,共6页
We report on soft c-axis point-contact Andreev reflection(PCAR)spectroscopy combining with resistivity measurements on BaFe_(2)(As_(0.7)P_(0.3))_(2),to elucidate the superconducting gap structure in the vicinity of th... We report on soft c-axis point-contact Andreev reflection(PCAR)spectroscopy combining with resistivity measurements on BaFe_(2)(As_(0.7)P_(0.3))_(2),to elucidate the superconducting gap structure in the vicinity of the quantum critical point.A double peak at the gap edge plus a dip feature at zero-bias has been observed on the PCAR spectra,indicative of the presence of a nodeless gap in BaFe_(2)(As_(0.7)P_(0.3))_(2).Detailed analysis within a sophisticated theoretical model reveals an anisotropic gap with deep gap minima.The PCARs also feature additional structures related to the electron-bosonic coupling mode.Using the extracted superconducting energy gap value,a characteristic bosonic energy Ω_(b) and its temperature dependence are obtained,comparable with the spin-resonance energy observed in neutron scattering experiment.These results indicate a magnetism-driven quantum critical point in the BaFe_(2)(As_(1-x)P_(x))_(2) system. 展开更多
关键词 quantum critical RESISTIVITY
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Characterization of bright betatron radiation generated by direct laser acceleration of electrons in plasma of near critical density
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作者 J.Cikhardt M.Gyrdymov +9 位作者 S.Zähter P.Tavana M.M.Günther N.Bukharskii N.Borisenko J.Jacoby X.F.Shen A.Pukhov N.E.Andreev O.N.Rosmej 《Matter and Radiation at Extremes》 SCIE EI CSCD 2024年第2期26-35,共10页
Directed x-rays produced in the interaction of sub-picosecond laser pulses of moderate relativistic intensity with plasma of near-critical density are investigated. Synchrotron-like (betatron) radiation occurs in the ... Directed x-rays produced in the interaction of sub-picosecond laser pulses of moderate relativistic intensity with plasma of near-critical density are investigated. Synchrotron-like (betatron) radiation occurs in the process of direct laser acceleration (DLA) of electrons in a relativisticlaser channel when the electrons undergo transverse betatron oscillations in self-generated quasi-static electric and magnetic fields. In anexperiment at the PHELIX laser system, high-current directed beams of DLA electrons with a mean energy ten times higher than the ponderomotive potential and maximum energy up to 100 MeV were measured at 10^(19) W/cm^(2)laser intensity. The spectrum of directed x-raysin the range of 5–60 keV was evaluated using two sets of Ross filters placed at 0°and 10°to the laser pulse propagation axis. The differential x-ray absorption method allowed for absolute measurements of the angular-dependent photon fluence. We report 10^(13) photons/sr withenergies >5 keV measured at 0°to the laser axis and a brilliance of 10^(21) photons s^(−1) mm^(−2) mrad−2(0.1%BW)−1. The angular distributionof the emission has an FWHM of 14°–16°. Thanks to the ultra-high photon fluence, point-like radiation source, and ultra-short emissiontime, DLA-based keV backlighters are promising for various applications in high-energy-density research with kilojoule petawatt-class laserfacilities. 展开更多
关键词 laser ACCELERATION critical
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Being a Father of a Premature Newborn: The Parental Experience and the Father/Premature Newborn Relationship: A Study Carried out in the Department of Neonatology Intensive Care Unit of Mohammed VI University Hospital
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作者 Hasnae Elhaddadi Sahar Messaoudi +1 位作者 Anass Ayyad Rim Amrani 《Open Journal of Pediatrics》 2024年第2期412-419,共8页
Introduction: Despite advances in obstetrics and pediatrics over the past 20 years, premature birth remains an unpredictable event that can have a devastating impact on parenthood. This study aimed to a... Introduction: Despite advances in obstetrics and pediatrics over the past 20 years, premature birth remains an unpredictable event that can have a devastating impact on parenthood. This study aimed to analyze the psycho-affective experiences of fathers of premature newborns. Methods: This was a descriptive cross-sectional study, carried out in the department of neonatology and neonatal intensive care unit of the CHU Mohamed VI in OUJDA, over 6 months from March 2022 to August 2022. It focused on 30 fathers of premature newborns hospitalized in our department. Results: The majority of fathers described a state of fear and stress, and attributed their negative experience to the unexpected nature of the premature birth. At the first meeting, half the fathers had a positive image of their newborn’s physical appearance, while 22% of fathers reported feeling uncomfortable about their newborn’s low weight. Most fathers reported that they appreciated the welcome they received, the skill with which they cared for their newborn, and the availability of the pediatrician to provide information on their child’s state of health. Two fathers enjoyed skin-to-skin contact with their newborns. None of the fathers met a psychologist. When they returned home, half the fathers had a positive outlook, marked by happiness at being able to fully invest in their role as fathers, the other half reported being torn between the desire to see their child integrated into the family cocoon and the fear of not being able to manage delicate situations properly without a medical team. Conclusion: Bringing a premature baby into the world can be a difficult experience, leading to the development of even minor psychological distress in some fathers, and hence the need for specific psychological care. 展开更多
关键词 PREMATURITY PSYCHIATRIST Emotional Disorder Depression
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Exploring Critical Thinking Dispositions among Fourth Year BSc Nursing Students of Various Colleges of Nursing, Pakistan
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作者 Sadaf Younis Najma Balquees Anwar Syeda Fakhar Batool 《Open Journal of Nursing》 2024年第6期267-281,共15页
Background: Critical Thinking (CT) dispositions in nursing are prominent predictors of competence in delivering high-quality care, and of professionalism, in newly graduated nurses. CT skills, in isolation of CT dispo... Background: Critical Thinking (CT) dispositions in nursing are prominent predictors of competence in delivering high-quality care, and of professionalism, in newly graduated nurses. CT skills, in isolation of CT dispositions, do not guarantee success in the workplace, because Critical Thinking Dispositions (CTD) are important elements of intellectual reasoning that simulate a person towards using the CT skills. Therefore, nursing educational programs should promote lifelong learning rather than focusing on transferring the content of nursing knowledge only. And for this purpose, quality education is the key. Education should focus on teaching from diverse perspectives, incorporating various teaching learning strategies that are congruent with the modern era. Purpose: The purpose of this study is to explore critical thinking dispositions among final year Baccalaureate Nursing students of various military colleges of nursing, in Pakistan. Methodology: A descriptive qualitative exploratory study design was used to investigate the CTD of BSc final year nursing students. The study population included twelve willing nursing students, from six military colleges across the country. Demographic information and consent was taken from the participants of the study. In-depth interviews, through a semi structured interview guide, and probes were used to obtain data related to personal experiences of CTD amongst the nursing students. Results: Data analysis showed two broad themes: 1) Perceptions of CT, and 2) Experiences of CT dispositions. In theme one, the emerging category was: Clarity of CT;whereas in theme two, the categories that emerged were: a) Truth Seeking, b) Open Mindedness, c) Inquisitiveness, and d) Self Organization. Conclusion: The findings of the study revealed positive dispositions towards truth seeking, open mindedness, and self-organization, whereas disposition towards inquisitiveness was weak. Self-confidence and maturity also emerged as positive factors that the students possessed. This study recommends that faculty and learners should extend their concept of CTD, and emphasizes its application in daily routine. Additionally, faculty should modify their instructional strategies and focus on the cultivation of dispositions of inquisitiveness, curiosity, and allow questioning by students in the class. 展开更多
关键词 critical Thinking critical Thinking Disposition Nursing Students
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Predictive modeling of critical temperatures in magnesium compounds using transfer learning
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作者 Surjeet Kumar Russlan Jaafreh +4 位作者 Subhajit Dutta Jung Hyeon Yoo Santiago Pereznieto Kotiba Hamad Dae Ho Yoon 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第4期1540-1553,共14页
This study presents a transfer learning approach for discovering potential Mg-based superconductors utilizing a comprehensive target dataset.Initially,a large source dataset(Bandgap dataset)comprising approximately∼7... This study presents a transfer learning approach for discovering potential Mg-based superconductors utilizing a comprehensive target dataset.Initially,a large source dataset(Bandgap dataset)comprising approximately∼75k compounds is utilized for pretraining,followed by fine-tuning with a smaller Critical Temperature(T_(c))dataset containing∼300 compounds.Comparatively,there is a significant improvement in the performance of the transfer learning model over the traditional deep learning(DL)model in predicting Tc.Subsequently,the transfer learning model is applied to predict the properties of approximately 150k compounds.Predictions are validated computationally using density functional theory(DFT)calculations based on lattice dynamics-related theory.Moreover,to demonstrate the extended predictive capability of the transfer learning model for new materials,a pool of virtual compounds derived from prototype crystal structures from the Materials Project(MP)database is generated.T_(c) predictions are obtained for∼3600 virtual compounds,which underwent screening for electroneutrality and thermodynamic stability.An Extra Trees-based model is trained to utilize E_(hull)values to obtain thermodynamically stable materials,employing a dataset containing Ehull values for approximately 150k materials for training.Materials with Ehull values exceeding 5 meV/atom were filtered out,resulting in a refined list of potential Mg-based superconductors.This study showcases the effectiveness of transfer learning in predicting superconducting properties and highlights its potential for accelerating the discovery of Mg-based materials in the field of superconductivity. 展开更多
关键词 SUPERCONDUCTIVITY critical temperature Transfer learning Crystal structure features Thermodynamic stability
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