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1.
Phys Rev Lett ; 133(2): 021802, 2024 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-39073961

RESUMO

The first results of the study of high-energy electron neutrino (ν_{e}) and muon neutrino (ν_{µ}) charged-current interactions in the FASERν emulsion-tungsten detector of the FASER experiment at the LHC are presented. A 128.8 kg subset of the FASERν volume was analyzed after exposure to 9.5 fb^{-1} of sqrt[s]=13.6 TeV pp data. Four (eight) ν_{e} (ν_{µ}) interaction candidate events are observed with a statistical significance of 5.2σ (5.7σ). This is the first direct observation of ν_{e} interactions at a particle collider and includes the highest-energy ν_{e} and ν_{µ} ever detected from an artificial source. The interaction cross section per nucleon σ/E_{ν} is measured over an energy range of 560-1740 GeV (520-1760 GeV) for ν_{e} (ν_{µ}) to be (1.2_{-0.7}^{+0.8})×10^{-38} cm^{2} GeV^{-1} [(0.5±0.2)×10^{-38} cm^{2} GeV^{-1}], consistent with standard model predictions. These are the first measurements of neutrino interaction cross sections in those energy ranges.

2.
Phys Rev Lett ; 131(3): 031801, 2023 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-37540863

RESUMO

We report the first direct observation of neutrino interactions at a particle collider experiment. Neutrino candidate events are identified in a 13.6 TeV center-of-mass energy pp collision dataset of 35.4 fb^{-1} using the active electronic components of the FASER detector at the Large Hadron Collider. The candidates are required to have a track propagating through the entire length of the FASER detector and be consistent with a muon neutrino charged-current interaction. We infer 153_{-13}^{+12} neutrino interactions with a significance of 16 standard deviations above the background-only hypothesis. These events are consistent with the characteristics expected from neutrino interactions in terms of secondary particle production and spatial distribution, and they imply the observation of both neutrinos and anti-neutrinos with an incident neutrino energy of significantly above 200 GeV.

3.
Proc Natl Acad Sci U S A ; 115(27): 6964-6969, 2018 07 03.
Artigo em Inglês | MEDLINE | ID: mdl-29915076

RESUMO

Increased anthropogenic-induced aerosol concentrations over the Himalayas and Tibetan Plateau have affected regional climate, accelerated snow/glacier melting, and influenced water supply and quality in Asia. Although sulfate is a predominant chemical component in aerosols and the hydrosphere, the contributions from different sources remain contentious. Here, we report multiple sulfur isotope composition of sedimentary sulfates from a remote freshwater alpine lake near Mount Everest to reconstruct a two-century record of the atmospheric sulfur cycle. The sulfur isotopic anomaly is utilized as a probe for sulfur source apportionment and chemical transformation history. The nineteenth-century record displays a distinct sulfur isotopic signature compared with the twentieth-century record when sulfate concentrations increased. Along with other elemental measurements, the isotopic proxy suggests that the increased trend of sulfate is mainly attributed to enhancements of dust-associated sulfate aerosols and climate-induced weathering/erosion, which overprinted sulfur isotopic anomalies originating from other sources (e.g., sulfates produced in the stratosphere by photolytic oxidation processes and/or emitted from combustion) as observed in most modern tropospheric aerosols. The changes in sulfur cycling reported in this study have implications for better quantification of radiative forcing and snow/glacier melting at this climatically sensitive region and potentially other temperate glacial hydrological systems. Additionally, the unique Δ33S-δ34S pattern in the nineteenth century, a period with extensive global biomass burning, is similar to the Paleoarchean (3.6-3.2 Ga) barite record, potentially providing a deeper insight into sulfur photochemical/thermal reactions and possible volcanic influences on the Earth's earliest sulfur cycle.


Assuntos
Ar/análise , Isótopos de Enxofre/química
4.
Exp Brain Res ; 235(12): 3833-3841, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28993890

RESUMO

Inhibitory control plays an important role in goal-directed behavior. Although substantial inter-individual variability exists in the behavioral performance of response inhibition, the corresponding modulating neurochemical and neurophysiological mechanisms remain unclear. Thus, the present study aimed to explore the relationship between behavioral response inhibition, GABA+ concentrations and automatic sensory gating (SG) in the auditory cortices. We recruited 19 healthy adults to undergo magnetoencephalography, magnetic resonance spectroscopy (MRS), and behavioral experiments. A paired-stimulus paradigm was used to study SG of the auditory cortices, and an auditory-driven Go-Nogo task was used to evaluate the behavioral response inhibition. Resting GABA+ concentrations were measured in the bilateral superior temporal gyri by means of MRS. Neither GABA+ concentrations nor auditory SG showed significant hemispheric asymmetry. However, an enhanced SG (lower ratio) was found to correlate with improved behavioral inhibition. Moreover, a higher GABA+ concentration was strongly related to improved inhibitory control. These findings highlight the important role of automatic neurophysiological processes and inhibitory neurotransmitters in the prediction of the behavioral performance of inhibitory control.


Assuntos
Mapeamento Encefálico , Inibição Psicológica , Descanso , Filtro Sensorial/fisiologia , Ácido gama-Aminobutírico/metabolismo , Estimulação Acústica , Adulto , Encéfalo/diagnóstico por imagem , Comportamento de Escolha/fisiologia , Eletroencefalografia , Feminino , Humanos , Espectroscopia de Ressonância Magnética , Masculino , Tempo de Reação/fisiologia , Adulto Jovem
5.
Phys Chem Chem Phys ; 16(37): 20138-46, 2014 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-25135162

RESUMO

An analytical model for the ionic conductance in a pH-regulated nanochannel gated by a field effect transistor is derived for the first time. In contrast to the existing studies, the developed model takes into account the practical effects of multiple ionic species, surface chemistry reactions, the Stern layer, and electroosmotic flow. The model is validated by the experimental data of ionic conductance available in the literature. Results show that the performance of the field effect control of the ionic conductance in the gated silica nanochannel is remarkable when the solution pH and salt concentration are low. In addition, the Stern layer effect on the ionic conductance is significant when the salt concentration is low.


Assuntos
Nanoestruturas/química , Dióxido de Silício/química , Condutividade Elétrica , Concentração de Íons de Hidrogênio , Íons/química , Modelos Teóricos , Sais/química
6.
Respir Physiol Neurobiol ; 321: 104215, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38211904

RESUMO

Individuals with generalized anxiety disorder (GAD) have been shown to have altered neural gating of respiratory sensations (NGRS) using respiratory-related evoked potentials (RREP); however, corresponding neural oscillatory activities remain unexplored. The present study aimed to investigate altered NGRS in individuals with GAD using both time and time-frequency analysis. Nineteen individuals with GAD and 28 healthy controls were recruited. Paired inspiratory occlusions were delivered to elicit cortical neural activations measured from electroencephalography. The GAD group showed smaller N1 amplitudes to the first stimulus (S1), lower evoked gamma and larger evoked beta oscillations compared to controls. Both groups showed larger N1, P3, beta power and theta power in response to S1 compared to S2, suggesting a neural gating phenomenon. These findings suggest that N1, gamma and beta frequency oscillations may be indicators for altered respiratory sensation in GAD populations and that the N1, P3, beta and theta oscillations can reflect the neural gating of respiratory sensations.


Assuntos
Eletroencefalografia , Potenciais Evocados , Humanos , Potenciais Evocados/fisiologia , Transtornos de Ansiedade , Sensação , Taxa Respiratória , Filtro Sensorial/fisiologia
7.
Chemosphere ; 363: 142746, 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38969223

RESUMO

Vanadate-based photocatalysts have recently attracted substantial attention owing to their outstanding photocatalytic activity for degrading organic pollutants and generating energy via photocatalytic processes. However, the relatively high price of vanadium has hindered the development of vanadate-based photocatalysts for various applications. Spent catalysts obtained from oil refineries typically contain a significant quantity of vanadium, making them valuable for recovery and utilization as precursors for the production of high-value-added photocatalysts. In this study, we transformed the V present in spent catalysts produced by the petrochemical industry into ternary vanadate-based photocatalysts [BiVO4/InVO4/Ag3VO4 (BVO/IVO/AVO, respectively)] designed for water remediation. The ternary composites revealed an enhanced photocatalytic capability, which was 1.42 and 5.1 times higher than those of the binary BVO/IVO and pristine AVO due to the facilitated charge separation. The ternary photocatalysts not only effectively treated wastewater containing various organic dyes, such as methylene blue (MB), rhodamine 6G (R6G), and brilliant green (BG), but also exhibited remarkable photocatalytic performance in the degradation of antibiotics, reduction of Cr(VI), and bacterial inactivation. This paper proposes a feasible route for recycling industrial waste as a source of vanadium to produce highly efficient vanadate-based photocatalysts.

8.
Aging Male ; 16(3): 97-101, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23826982

RESUMO

OBJECTIVE: Emotional distress may be associated with severe aging symptoms. This study aimed to investigate aging symptoms in male psychiatric outpatients and their relationship with anxiety and depression. METHOD: About 176 male psychiatric outpatients aged 40-80 years were enrolled into this single-center cross-sectional study, and completed self-reported questionnaires including "Aging Males' Symptoms" (AMS) scale and the Hospital Anxiety and Depression Scale (HADS). RESULT: Age was correlated with less anxiety (r = -0.23), less psychological (r = -0.16) and more sexual symptoms (r = 0.31). After controlling demographic variables, the partial correlation coefficients of HADS and AMS scores ranged from 0.30 to 0.73. Four groups were defined by HADS: control (C; n = 103), depression (D; n = 18), anxiety (A; n = 26) and mixed anxiety and depression (M; n = 29). The M group had the most severe aging symptoms, and the C group the least. The A group had more psychological and less sexual symptoms than the D group. "Impaired sexual potency" was the only aging symptom in males not significantly different among the four groups. CONCLUSIONS: Anxiety and depression was associated with more severe aging symptoms in male psychiatric outpatients. Sexual dysfunction could be regarded as the core manifestation to differentiate aging symptoms from syndromal emotional distress.


Assuntos
Envelhecimento/psicologia , Ansiedade/diagnóstico , Depressão/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Taiwan
9.
Polymers (Basel) ; 15(11)2023 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-37299301

RESUMO

Li3VO4 (LVO) is a highly promising anode material for lithium-ion batteries, owing to its high capacity and stable discharge plateau. However, LVO faces a significant challenge due to its poor rate capability, which is mainly attributed to its low electronic conductivity. To enhance the kinetics of lithium ion insertion and extraction in LVO anode materials, a conductive polymer called poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is applied to coat the surface of LVO. This uniform coating of PEDOT:PSS improves the electronic conductivity of LVO, thereby enhancing the corresponding electrochemical properties of the resulting PEDOT:PSS-decorated LVO (P-LVO) half-cell. The charge/discharge curves between 0.2 and 3.0 V (vs. Li+/Li) indicate that the P-LVO electrode displays a capacity of 191.9 mAh/g at 8 C, while the LVO only delivers a capacity of 111.3 mAh/g at the same current density. To evaluate the practical application of P-LVO, lithium-ion capacitors (LICs) are constructed with P-LVO composite as the negative electrode and active carbon (AC) as the positive electrode. The P-LVO//AC LIC demonstrates an energy density of 107.0 Wh/kg at a power density of 125 W/kg, along with superior cycling stability and 97.4% retention after 2000 cycles. These results highlight the great potential of P-LVO for energy storage applications.

10.
Aging Male ; 15(1): 7-13, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22044340

RESUMO

INTRODUCTION: Issues of men's health have been greatly researched by scholars in recent decades. At men's health clinics, many patients complain of both insomnia and aging males' symptoms (AMS). These symptoms might be influenced by biological, psychological or even social factors. The aim of this study was to investigate different aspects of the relationship between insomnia and aging symptoms. METHODS: This cross-sectional study included 231 males from a men's health clinic. Participants completed a set of general data and screening assessments, including the AMS rating scale, insomnia severity index (ISI), Beck depression inventory-II (BDI-II) and Beck anxiety inventory Chinese version (BAI), to investigate the severity of aging symptoms, insomnia, depression and anxiety. RESULTS: The ISI correlated significantly with the AMS scale, both with (partial correlation coefficient = 0.470) and without (r = 0.580) controlled variances of depression and anxiety. Using linear regression, aging symptoms were statistically predicted by the severity of the ISI, and a substantial proportion of the variance was explained (adjusted R(2) = 0.410). When all variables were included, this proportion rose to 55.3% (adjusted R(2) = 0.553). CONCLUSION: We suggest that insomnia is a good predictor of aging symptoms across all age groups of men.


Assuntos
Envelhecimento/fisiologia , Saúde do Homem , Distúrbios do Início e da Manutenção do Sono/fisiopatologia , Adulto , Androgênios/deficiência , Ansiedade/epidemiologia , Estudos Transversais , Depressão/epidemiologia , Análise Fatorial , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Distúrbios do Início e da Manutenção do Sono/epidemiologia , Distúrbios do Início e da Manutenção do Sono/psicologia
11.
Environ Monit Assess ; 184(9): 5689-703, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21968877

RESUMO

Urbanization and the subsequent changes in land use/cover inevitably influence the quality and even the quantity of stream water. This issue is widely studied through evaluations on land-use change scenarios or comparisons among historical patterns at the same watershed. However, observational stream discharge changes through urbanization gradient have rarely been discussed. In this study, we analyzed 5-year discharge data from 13 gauges in the Danshui River network with a wide range of urbanization gradient to explore the impacts on observational hydrological characteristics in individual catchments. The results reveal that stream discharge in pristine watersheds is characterized by a larger proportion of baseflow and is less fluctuating. When the forest coverage is <90%, the discharge fluctuation almost doubles. Meanwhile, the baseflow fraction decreases gradually with the increase of paddy area, which may concomitantly result from the increasing irrigation. Such a drop in baseflow may threaten the maintenance of the minimum flow required for the stream aquatic ecosystem. Furthermore, we simulated the stream discharges by TOPMODEL with blind land-use-independent parameters. The results show that the simulated discharges are satisfactory, particularly for the pristine catchments, but not as fitting for the paddy-intensive watersheds perhaps due to the unexpected irrigation. On the whole, the calibrated parameters are dependent with the landscape characteristics. The landscape-based parameter estimations can be applied to simulate discharge well, meaning the potential to assess the ungauged watersheds.


Assuntos
Monitoramento Ambiental , Rios/química , Poluentes Químicos da Água/análise , Modelos Químicos , Taiwan , Urbanização , Poluição Química da Água/estatística & dados numéricos
12.
Int J Methods Psychiatr Res ; 31(1): e1896, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34714578

RESUMO

OBJECTIVE: The Depression and Somatic Symptoms Scale (DSSS), a free scale, includes depression (DS) and somatic (SS) subscales. This study aimed to compare the associations of the baseline DSSS, Hamilton Depression Rating Scale (HAMD) and Hospital Anxiety and Depression Scale (HADS) scores with the outcome of depression over a 10-year follow-up period. METHODS: Two hundred ninety outpatients with major depressive disorder (MDD) were enrolled and were followed-up at the 6-month, 2-year, and 10-year points. The three scales were administered at each follow-up. Multiple linear regressions were used to compare the associations. RESULTS: In a comparison of the HAMD, DS, and HADS-depression, the HAMD and DS scores at baseline were most strongly associated with the HAMD score at two (6-month and 2-year) and one (10-year) follow-up points, respectively. In a comparison of the HAMD, DS, SS, HADS-depression, and HADS-anxiety, the SS and HAMD scores at baseline were most strongly associated with the HAMD score at two (6-month and 10-year) and one (2-year) follow-up points, respectively. CONCLUSIONS: The DS, SS, and HAMD scores at baseline were significantly associated with the long-term outcome of depression. Scales or subscales assessing somatic symptoms might be more strongly associated with the outcome of depression.


Assuntos
Transtorno Depressivo Maior , Sintomas Inexplicáveis , Depressão/diagnóstico , Transtorno Depressivo Maior/complicações , Transtorno Depressivo Maior/diagnóstico , Humanos , Prognóstico , Escalas de Graduação Psiquiátrica , Psicometria
13.
J Affect Disord ; 299: 188-195, 2022 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-34863714

RESUMO

BACKGROUND: Trait anxiety has a detrimental effect on attention, which further leads to dysfunction of inhibitory control. However, there is no study examining how trait anxiety modulates inhibitory abilities on restraint and cancellation in the same subjects. Therefore, we aimed to use electrophysiological recordings to interrogate whether and to what extent trait anxiety modulated these two kinds of inhibitory functions. The Cognitive Failures Questionnaire (CFQ), a self-reported assessment of daily absentmindedness, was also used to examine its association with inhibition-related electrophysiological indicators. METHODS: Forty subjects were recruited from the top 10% (Higher Trait Anxiety [HTA], n= 20) and last 10% (Lower Trait Anxiety [LTA], n= 20) of the trait anxiety score distribution from 400 college students. During electrophysiological recordings, the Go-Nogo and stop-signal tasks were performed, which evaluated the abilities of restraint and cancellation, respectively. RESULTS: The HTA and LTA groups showed a comparable behavioral performance of restraint and cancellation abilities. However, the results of time-frequency analysis revealed that those with HTA demonstrated a stronger power of alpha oscillations (600‒1000 ms) in response to Stop trials in the stop-signal task, compared with individuals with LTA. Such oscillatory activity was positively correlated with the CFQ score. There was no significant between-group difference of the brain activation in the Go-Nogo task. LIMITATIONS: Future studies can recruit both individuals with trait anxiety and anxiety disorders to clarify the boundaries between healthy and pathological worries in terms of cancellation ability. CONCLUSIONS: cancellation, but not restraint, is modulated by trait anxiety.


Assuntos
Potenciais Evocados , Inibição Psicológica , Ansiedade , Transtornos de Ansiedade , Atenção , Eletroencefalografia , Humanos , Tempo de Reação
14.
Polymers (Basel) ; 14(4)2022 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-35215615

RESUMO

Microencapsulation plays an important role in biomedical technology owing to its particular and attractive characteristics. In this work, we developed ropivacaine and dexamethasone loaded poly(D, L-lactide-co-glycolide) (PLGA) microparticles via electrospraying technique and investigated the release behavior of electrosprayed microparticles. The particle morphology of sprayed particles was assessed using scanning electron microscopy (SEM). The in vitro drug release kinetics were evaluated employing an elution method, and the in vivo pharmaceutical release as well as its efficacy on pain relief were tested using an animal activity model. The microscopic observation suggested that sprayed microparticles exhibit a size distribution of 5-6 µm. Fourier-transform infrared spectrometry and differential scanning calorimetry demonstrated the successful incorporation of pharmaceuticals in the PLGA particulates. The drugs-loaded particles discharged sustainably high concentrations of ropivacaine and dexamethasone at the target region in vivo for over two weeks, and the drug levels in the blood remained low. By adopting the electrospraying technique, we were able to prepare drug-embedded polymeric microparticles with effectiveness and with a sustainable capability for postoperative pain control.

15.
Polymers (Basel) ; 14(3)2022 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-35160564

RESUMO

In this article, hierarchical porous carbon (HPC) with high surface area of 1604.9 m2/g is prepared by the pyrolysis of rubberwood sawdust using CaCO3 as a hard template. The bio-oil pyrolyzed from the rubber sawdust, followed by the polymerization reaction to form resole phenolic resin, can be used as a carbon source to prepare HPC. The biomass-derived HPC shows a three-dimensionally interconnected morphology which can offer a continuous pathway for ionic transport. The symmetrical supercapacitors based on the as-prepared HPC were tested in 1.0 M tetraethylammonium tetrafluoroborate/propylene carbonate electrolyte. The results of electrochemical analysis show that the HPC-based supercapacitor exhibits a high specific capacitance of 113.3 F/g at 0.5 A/g with superior rate capability and cycling stability up to 5000 cycles. Hybrid lithium-ion capacitors (LICs) based on the HPC and Li4Ti5O12 (LTO) were also fabricated. The LICs have a maximum energy density of 113.3 Wh/kg at a power density of 281 W/kg. Moreover, the LIC also displays a remarkable cycling performance with a retention of 92.8% after 3000 cycles at a large current density of 0.75 A/g, suggesting great potential application in the energy storage of the LIC.

16.
Front Big Data ; 5: 828666, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35402906

RESUMO

The determination of charged particle trajectories in collisions at the CERN Large Hadron Collider (LHC) is an important but challenging problem, especially in the high interaction density conditions expected during the future high-luminosity phase of the LHC (HL-LHC). Graph neural networks (GNNs) are a type of geometric deep learning algorithm that has successfully been applied to this task by embedding tracker data as a graph-nodes represent hits, while edges represent possible track segments-and classifying the edges as true or fake track segments. However, their study in hardware- or software-based trigger applications has been limited due to their large computational cost. In this paper, we introduce an automated translation workflow, integrated into a broader tool called hls4ml, for converting GNNs into firmware for field-programmable gate arrays (FPGAs). We use this translation tool to implement GNNs for charged particle tracking, trained using the TrackML challenge dataset, on FPGAs with designs targeting different graph sizes, task complexites, and latency/throughput requirements. This work could enable the inclusion of charged particle tracking GNNs at the trigger level for HL-LHC experiments.

17.
Chemosphere ; 300: 134484, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35395258

RESUMO

In this study, the Ni(OH)2/CuO heterostructured photocatalysts have been prepared via microwave (MW) hydrothermal method. The results indicate that the Ni(OH)2/CuO heterostructured composite exhibits a strong absorption in the UV and Vis regions. The construction of the heterojunction also improves the photogenerated carrier transport and inhibits the electron-hole separation due to the enhanced absorbance and the well alignment of the energy band at the Ni(OH)2/CuO interface. The photocatalytic capability of the heterostructured composites with different Ni(OH)2/CuO molar ratios is evaluated by the photodegradation of methylene blue under visible light illumination. The results reveal that the Ni(OH)2/CuO (1:1) heterostructures show the best photocatalytic efficiency, which is 2.18 and 6.13 times higher than that of pure Ni(OH)2 and CuO, respectively. Besides, the Ni(OH)2/CuO composites also reveal remarkable biocompatibility and strong photocatalytic activity in the degradation of antibiotics such as ciprofloxacin (CIP) and tetracycline (TC) and inactivation of Escherichia coli (E. coli).


Assuntos
Poluentes Ambientais , Antibacterianos , Catálise , Cobre/química , Escherichia coli
18.
Compr Psychiatry ; 52(4): 370-7, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21683174

RESUMO

OBJECTIVE: Although many studies have researched adherence to pharmacotherapy among patients with major depressive disorder (MDD), the effects of chronic depression, anxiety comorbidities, migraine, and other factors on adherence have rarely been studied. This study investigated which comorbidities and factors independently predicted discontinuation of pharmacotherapy among psychiatric outpatients with MDD. METHODS: One hundred thirty-five subjects (34 men, 101 women) with MDD were enrolled. MDD and anxiety comorbidities were diagnosed using the Structured Clinical Interview for DSM-IV-TR (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision), migraine was diagnosed based on the International Classification of Headache Disorders, 2nd Edition, and depression severity was evaluated using the Hamilton Depression Rating Scale. Six months later, subjects' reasons for discontinuation were investigated, and Cox proportional hazards regression and logistic regression were used to investigate the independent factors predicting discontinuation. RESULTS: Subjects with chronic depression, migraine, panic/agoraphobia, or posttraumatic stress disorder attended follow-up for longer before discontinuation than those without. Chronic depression and greater age independently predicted a longer follow-up before discontinuation. Concern about and intolerance of the side effects of antidepressants and lack of insight into MDD independently predicted discontinuation within 2 months. "Self-reported recovery" was the most common reason for discontinuation; however, 53.8% of the subjects who cited this reason did not reach full remission. CONCLUSIONS: The impact of the duration of depression (chronic depression) on adherence may be more important than the severity of depression, anxiety comorbidities, and migraine. Education of MDD patients and society in general to improve understanding of MDD and antidepressants is needed to enhance adherence to pharmacotherapy.


Assuntos
Transtorno Depressivo Maior/tratamento farmacológico , Transtorno Depressivo Maior/psicologia , Adesão à Medicação/psicologia , Adulto , Transtornos de Ansiedade/epidemiologia , Transtornos de Ansiedade/psicologia , Comorbidade , Transtorno Depressivo Maior/epidemiologia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Masculino , Pacientes Ambulatoriais/psicologia , Índice de Gravidade de Doença
19.
Biosensors (Basel) ; 11(2)2021 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-33669896

RESUMO

In this report, we summarized our development of biosensors for Rhodamine 6G and in vitro glucose detection based on surface-enhanced Raman scattering technology. For the detection of both Rhodamine 6G and in vitro glucose, a nature-patterned substrate with gold films over nanostructures (NPS-AuFON) was used as the surface-enhanced Raman scattering sensor platform. The enhancement factor was calculated at 9 × 107. In the processing of the substrate, cyclic voltammetry was used to form nano-gold particles under different conditions. The Rhodamine 6G and glucose detection were then achieved on this substrate. Furthermore, we combined the potentiostatic technique and electrochemical adsorption to best detect glucose in low concentrations. The glucose oxidation potential (100 mV) was used to capture glucose close to the surface of the NPS-AuFON. The quantitative detection of glucose in solution and in situ inspection were confirmed. Further, we determined that this surface modification technology can reach the goal of experiments set by the World Health Organization to judge whether or not a patient is a diabetic by detecting a glucose concentration of 11.1 mmol/L (mg/dL) at a minimum.


Assuntos
Técnicas Biossensoriais/instrumentação , Glucose/análise , Análise Espectral Raman/métodos , Ouro/química , Humanos , Nanopartículas Metálicas/química , Nanoestruturas , Rodaminas , Prata , Propriedades de Superfície
20.
J Affect Disord ; 280(Pt A): 211-218, 2021 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-33220556

RESUMO

BACKGROUND: Mismatch negativity (MMN) or its magnetic counterpart (MMNm) is a neurophysiological signal to reflect the automatic change-detection ability. However, MMN studies in patients with panic disorder (PD) showed contrasting results using electroencephalographic (EEG) recordings. The present study attempted to overcome the limitations of EEG methodology by means of a whole-head magnetoencephalography (MEG) combined with the depth-weighted minimum norm estimate method to conduct an in-depth investigation on the MMNm at the cortical level in patients with PD. METHODS: We recruited 22 healthy controls (HC) and 20 patients with PD to perform auditory oddball paradigm during MEG recordings. The cortical MMNm amplitudes and latencies in the superior temporal gyrus, inferior parietal lobule, and inferior frontal gyrus (IFG) were compared between the HC and PD groups. The correlations between MMNm responses and clinical measurement were also examined. RESULTS: Compared with the HC group, the PD group demonstrated significantly reduced MMNm amplitudes in the IFG. Furthermore, higher trait scores of the State-Trait Anxiety Inventory were associated with lower MMNm amplitudes of the right IFG among patients with PD. LIMITATIONS: Generalization of the current results to other settings or samples should be made cautiously due to the use of different medication regimens and presence of comorbidities in our patients. CONCLUSIONS: Our data suggest dysfunctional pre-attentive change-detection ability in patients with PD, particularly in the IFG.


Assuntos
Magnetoencefalografia , Transtorno de Pânico , Estimulação Acústica , Atenção , Eletroencefalografia , Potenciais Evocados Auditivos , Humanos
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