Early Appearance Research Articles

Response of Different Stem Cutting to IBA on Sprouting and Survival of Night-blooming Jasmine (Cestrum nocturnum L., Solanaceae)

The present investigation was assessed at Floriculture farm of College of Horticulture, Dapoli, Dist. Ratnagiri, (Maharashtra state) during Rabi season of the year 2023-24. The experiment was designed in Factorial Randomized Bock Design replicated thrice comprised two factors viz. types of stem cutting (Factor A) as softwood cutting, semi-hardwood cutting and hardwood cutting and IBA levels (factor B) as control, IBA @ 1500 ppm, 2000 ppm, 2500 ppm and 3000 ppm. Softwood cutting recorded minimum days taken for first sprout (6.33 days) and highest days required for sprouting (32.07 days). Hardwood cutting registered higher sprouting percentage (85.60 %) and survival percentage (80.93 %). Minimum days taken for first sprout (6.11 days), days required for highest sprouting (29.22 days) and maximum sprouting percentage (88 %) were recorded in control treatment. IBA @ 2000 ppm recorded the highest survival percentage (84.64 %). In interaction effect, softwood cutting treated with IBA @ 2000 ppm recorded early appearance of first sprout (4.00 days). However, softwood cutting treated without IBA took least days for highest sprouting (29.22 days). The highest sprouting percentage (100 %) was recorded in hardwood cutting treated with 1500 ppm IBA and 2000 ppm IBA. Hardwood cutting treated with 2000 ppm IBA recorded 100 % of survival percentage. Hence, it concluded that treatment combination of hardwood cutting treated with 2000 ppm IBA showed promising result for sprouting and survival percentage of night-blooming jasmine under Konkan agro-climatic condition.

Early appearance concerns after burns: Investigating the roles of psychological flexibility and self-compassion

Few qualitative studies have explored appearance concerns soon after burn injuries. This study aimed to understand the early experiences of appearance concerns after burns, through the lens of psychological flexibility and self-compassion. Template analysis informed data collection and analysis. Fifteen adults (nine female, six male) with appearance concerns were interviewed within three months of their burns. Three superordinate themes were identified: (1) Need for social connection; (2) Distress through difference; and (3) Experiential avoidance and self-criticism in response to early appearance concerns. Findings highlighted that early appearance concerns are influenced by the need for social acceptance and the desire to conform to societal ideals. Internalised gender and appearance ideals and concerns about rejection and stigma were activated by the burn, and individuals had difficulty responding to their early appearance concerns with psychological flexibility and self-compassion. Instead, attempts to avoid distress (experiential avoidance) occurred. Self-criticism in response to distress was evident which, for some, extended to the event leading to their burns. Early interventions to enhance psychological flexibility and self-compassion (e.g., acceptance and commitment therapy, mindful self-compassion), to help individuals respond to appearance concerns with less experiential avoidance and self-criticism, would likely promote adjustment to changes in appearance after burns.

Bibliometric analysis of career decidedness studies using a visual mapping technique

This study aims to provide an overview of "career decidedness" and identifies related study trends and gaps. Analyzing 104 works published between 1995 and 2024 in the Web of Science (WoS) database using VOSviewer includes 93 journal articles, 12 papers, and two early appearance studies. Most research was in social psychology (88) and management (5). The most cited authors were Lent-Robert (519), Penn, Lee (464), and Ireland Gleen (460), while the most co-cited authors were Lent-Robert (144), Hirschi Andreas (63), and Savickas (63). The USA (1676 citations), Germany (258 citations), and The USA (1676 citations), Germany (258 citations), and Australia (252 citations) were the top cited countries. Leading institutions included the University of Maryland (749 citations), the University of Tennessee (235 citations), and the Leuphana University of Lüneburg (181 citations). Common keywords were career decidedness, self-management model, career decision-making, social career theory, and career development. The top publications were by Duffy (2007), with 203 citations; Lent (2016), with 168 citations; and Lent (2017) with 164 citations.

Common Characteristics Between Frailty and Myotonic Dystrophy Type 1: A Narrative Review.

Myotonic dystrophy type 1 (DM1) is an inherited neuromuscular disorder often considered a model of accelerated aging due to the early appearance of certain age-related clinical manifestations and cellular and molecular aging markers. Frailty, a state of vulnerability related to aging, has been recently studied in neurological conditions but has received considerably less attention in neuromuscular disorders. This narrative review aims to describe 1) the common characteristics between Fried's frailty phenotype criteria (muscular weakness, slow gait speed, weight loss, exhaustion/fatigue, and low physical activity) and DM1, and 2) the psychological and social factors potentially contributing to frailty in DM1. This review gathered evidence suggesting that DM1 patients meet four of the five frailty phenotype criteria. Additionally, longitudinal studies report the deterioration of these criteria over time in DM1. Patients also exhibit psychological/cognitive and social factors that might contribute to frailty. Monitoring frailty criteria in the DM1 population could help to implement timely preventions and interventions to reduce the disease burden and severity of frailty symptoms.

Atomistic simulations of the thinning process of tantalum/copper heterostructure in wafer containing through silicon via

Through silicon via (TSV) interconnect structure plays an essential role in high-density 3-D integration. The tantalum (Ta)/copper (Cu) heterointerface is one of the significant interfaces in the wafer containing TSV. Molecular dynamics simulations are utilized to study the interface evolution and thinning mechanism of Ta/Cu heterostructure at different grinding depths during the thinning process. It is found that atomic diffusion, amorphization, phase transition, and micro-defects are typical characteristics of interfacial evolution, which become more pronounced at deeper grinding depths. The extrusion of the hard Ta layer on the soft Cu layer leads to an early appearance of interface defects, including dislocations and stacking faults. It is revealed that the large lattice mismatch of the constituent layers and obstruction of the heterointerface result in obvious stress concentration. The reduced tangential and normal forces at the interface are ascribed to atomic structure evolution and intrinsic properties of the heterostructure. Additionally, the heterointerface can hinder heat conduction between the Ta and Cu layers. These findings can provide valuable guidance for the manufacture of the wafer containing TSV.

Amyloid-β Pathology Is the Common Nominator Proteinopathy of the Primate Brain Aging.

Senile plaques, mainly diffuse, and cerebral amyloid-β (Aβ) angiopathy are prevalent in the aging brain of non-human primates, from lemurs to non-human Hominidae. Aβ but not hyper-phosphorylated tau (HPtau) pathology is the common nominator proteinopathy of non-human primate brain aging. The abundance of Aβ in the aging primate brain is well tolerated, and the impact on cognitive functions is usually limited to particular tasks. In contrast, human brain aging is characterized by the early appearance of HPtau pathology, mainly forming neurofibrillary tangles, dystrophic neurites of neuritic plaques, and neuropil threads, preceding Aβ deposits by several decades and by its severity progressing from selected nuclei of the brain stem, entorhinal cortex, and hippocampus to the limbic system, neocortex, and other brain regions. Neurofibrillary tangles correlate with cognitive impairment and dementia in advanced cases. Aβ pathology is linked in humans to altered membrane protein and lipid composition, particularly involving lipid rafts. Although similar membrane alterations are unknown in non-human primates, membrane senescence is postulated to cause the activated β-amyloidogenic pathway, and Aβ pathology is the prevailing signature of non-human and human primate brain aging.

Development of the basic architecture of neocortical circuitry in the human fetus as revealed by the coupling spatiotemporal pattern of synaptogenesis along with microstructure and macroscale in vivo MR imaging.

In humans, a quantifiable number of cortical synapses appears early in fetal life. In this paper, we present a bridge across different scales of resolution and the distribution of synapses across the transient cytoarchitectonic compartments: marginal zone (MZ), cortical plate (CP), subplate (SP), and in vivo MR images. The tissue of somatosensory cortex (7-26 postconceptional weeks (PCW)) was prepared for electron microscopy, and classified synapses with a determined subpial depth were used for creating histograms matched to the histological sections immunoreacted for synaptic markers and aligned to in vivo MR images (1.5T) of corresponding fetal ages (maternal indication). Two time periods and laminar patterns of synaptogenesis were identified: an early and midfetal two-compartmental distribution (MZ and SP) and a late fetal three-compartmental distribution (CP synaptogenesis). During both periods, a voluminous, synapse-rich SP was visualized on the in vivo MR. Another novel finding concerns the phase of secondary expansion of the SP (13 PCW), where a quantifiable number of synapses appears in the upper SP. This lamina shows a T2 intermediate signal intensity below the low signal CP. In conclusion, the early fetal appearance of synapses shows early differentiation of putative genetic mechanisms underlying the synthesis, transport and assembly of synaptic proteins. "Pioneering" synapses are likely to play a morphogenetic role in constructing of fundamental circuitry architecture due to interaction between neurons. They underlie spontaneous, evoked, and resting state activity prior to ex utero experience. Synapses can also mediate genetic and environmental triggers, adversely altering the development of cortical circuitry and leading to neurodevelopmental disorders.

Effect of different boundary conditions on the combustion properties and fire characteristics of typical woods

To provide guidance on the bioenergy potential of wood and its fire spread numerical simulation, insights into the combustion properties and fire characteristics of one hardwood (sassafras) and two softwoods (pine and fir) were investigated. The effect of different boundary conditions are focused. The condensed phase decomposition in thermogravimetric analysis indicated that the main degradation processes for all wood combustion could be divided into two stages, and the corresponding demarcation point of conversion rate is 0.4 and 0.35 for hardwood and softwood, respectively. Three specific regions could further be established based on the activation energies variations in Stage Ⅰ. The governing reaction mechanism of sassafras wood is determined to be the diffusion model connect with order-based model, while the reaction mechanism of softwoods (pine and fir) can be considered as the reaction order (1st to three-halves) type followed by diffusion model. The gas phase flaming in FPA combustion experiments suggest that fir and pine wood have a faster charring rate and produce less CO and CO2 during pyrolysis and combustion. Sassafras requires more time to be ignited owing to its high density, which causes higher thermal inertia therefore decelerating the temperature increase on the sample surface. In addition, the dense structure of sassafras leads to an early appearance of the second HRR and MLR peaks. As hardwood has a higher density than softwood, the thermal insulation in hardwood delays char cracking on sassafras wood surface and enhances the duration between ignition and flameout. Such findings should provide guidance for wood combustion modeling and flame spread simulation in future works.

Accuracy and Prognostic Value of Early Appearance of Ultrasonographic Findings of Placenta Accrete

Accuracy and Prognostic Value of Early Appearance of Ultrasonographic Findings of Placenta Accrete

Breaking the chain in organ failure: Role of umbilical cord and bone marrow derived mesenchymal stem cells in treatment of severe acute pancreatitis

BackgroundPrevious studies showed that MSCs could mitigate damage in the pancreas during acute pancreatitis (AP). However, acute mortality associated with AP was more often a result of persistent failure of remote organs, rather than local damage, especially in severe acute pancreatitis (SAP), and the effect of MSCs may vary depending on their origin. MethodsAn SAP model was induced in 8-week C57BL/6 J male mice by retrograde injection of 5 % sodium taurocholate solution through the bile duct. SAP mice were divided into the SAP group, UC-MSCs group, and BMSCs group, which were treated with saline, 1 × 106 UC-MSCs, and 1 × 106 BMSCs respectively, through the tail vein. After treatment, serum markers, inflammation, and morphology were assessed in the pancreas, kidneys, lungs, and hearts. ResultsMSCs infusion ameliorated the systemic inflammatory response in SAP mice. In the MSCs-treated SAP mice, local tissue injury and inflammation response in the pancreas were alleviated. But more importantly, the renal and lung injury were all significantly and drastically mitigated, and the levels of pro-inflammatory factors such as IL-6, MCP-1, IL-1β, and TNF-α in the kidney, lung and heart were sharply decreased. In terms of origin, UC-MSCs exhibited superior efficacy compared with BMSCs. Furthermore, compared to the normal control mice, UC-MSCs showed an earlier appearance, higher distribution densities, and longer duration of presence in the injured tissue. ConclusionsThis study provides compelling evidence supporting the therapeutic potential of MSCs in SAP treatment and particularly their ability to mitigate multi-organ failure. Our results also suggested that UC-MSCs may offer greater advantages over BMSCs in SAP therapy.

Strong observational support for the [formula omitted] timeline in the early universe

JWST’s recent discovery of well-formed galaxies and supermassive black holes only a few hundred Myr after the big bang seriously challenges the timeline predicted by ΛCDM. Now, the latest identification of polycyclic aromatic hydrocarbons (PAHs) at z=6.71, together with these earlier inconsistencies, makes the time compression problem in this model quite overwhelming. We consider the timeline associated with the formation and growth of PAH grains based on current astrophysical models and argue that their appearance at z=6.71 favors the structure formation history in Rh=ct rather than that of Planck-ΛCDM. We estimate the time at which they must have started growing in each case, and then trace their history through various critical events, such as the end of the ‘dark ages’, the beginning of Pop III star formation, and the onset of reionization. Together, these three distinct discoveries by JWST, viz. high-z galaxies, high-z quasars and the surprisingly early appearance of PAHs, all paint a fully consistent picture in which the timeline in ΛCDM is overly compressed at z≳6, while strongly supporting the expansion history in the early Universe predicted by Rh=ct.

The Early Appearance of Asthma and Its Relationship with Gut Microbiota: A Narrative Review.

Asthma is, worldwide, the most frequent non-communicable disease affecting both children and adults, with high morbidity and relatively low mortality, compared to other chronic diseases. In recent decades, the prevalence of asthma has increased in the pediatric population, and, in general, the risk of developing asthma and asthma-like symptoms is higher in children during the first years of life. The "gut-lung axis" concept explains how the gut microbiota influences lung immune function, acting both directly, by stimulating the innate immune system, and indirectly, through the metabolites it generates. Thus, the process of intestinal microbial colonization of the newborn is crucial for his/her future health, and the alterations that might generate dysbiosis during the first 100 days of life are most influential in promoting hypersensitivity diseases. That is why this period is termed the "critical window". This paper reviews the published evidence on the numerous factors that can act by modifying the profile of the intestinal microbiota of the infant, thereby promoting or inhibiting the risk of asthma later in life. The following factors are specifically addressed in depth here: diet during pregnancy, maternal adherence to a Mediterranean diet, mode of delivery, exposure to antibiotics, and type of infant feeding during the first three months of life.

Early appearance of thyroid autoimmunity in children followed from birth for type 1 diabetes risk.

Autoantibodies to thyroid peroxidase (TPOAb) and thyroglobulin (TgAb) define pre-clinical autoimmune thyroid disease (AITD) which can progress to either clinical hypo- or hyperthyroidism. We determined the age at seroconversion in children genetically at risk for type 1 diabetes. TPOAb and TgAb seropositivity were determined in 5066 healthy children with HLA DR3 or DR4 containing haplogenotypes from The Environmental Determinants of Diabetes in the Young (TEDDY) Study. Children seropositive on the cross-sectional initial screen at 8-13 years of age had longitudinally collected samples (from 3.5 months of age) screened retrospectively and prospectively for thyroid autoantibodies to identify the age at seroconversion. First-appearing autoantibody was related to sex, HLA genotype, family history of AITD, and subsequent thyroid dysfunction and disease. The youngest appearance of TPOAb and TgAb was 10 and 15 months of age, respectively. Girls had higher incidence rates of both autoantibodies. Family history of AITD was associated with a higher risk of TPOAb hazard ratio [HR] 1.90, 95% confidence interval [CI] 1.17, 3.08; and TgAb HR 2.55, 95% CI 1.91, 3.41. The risk of progressing to hypo- or hyperthyroidism was not different between TgAb and TPOAb, but children with both autoantibodies appearing at the same visit had a higher risk compared to TPOAb appearing first (HR 6.34, 95% CI 2.72, 14.76). Thyroid autoantibodies may appear during the first years of life, especially in girls, and in children with a family history of AITD. Simultaneous appearance of both autoantibodies increases the risk for hypo- or hyperthyroidism.

Clinical phenotypic and genetic analysis of syndrome families with EYA1 gene variants

Objective:To investigate the clinical phenotype of a family with branchio-oto syndrome （BOS） and to explore the genetic etiology of the syndrome in this family. Methods:Clinical data were collected from a child diagnosed with BOS and his family members. Genomic DNA was extracted from peripheral blood of the proband and his family members. Whole-exome sequencing was performed, and the mutation sites were verified and analyzed by Sanger sequencing. Results:The family consists of two generations with four members, three of whom exhibit the phenotype. Two members have hearing loss and bilateral preauricular fistulas and bilateral branchial cleft fistulas. One member has bilateral preauricular fistulas and bilateral branchial cleft fistulas. All of which were in line with the clinical diagnosis of gill ear syndrome, the inheritance mode of the family was autosomal dominant inheritance, genetic testing showed that all members of the family had c. 1744delC（p. L592Cfs*47） mutation in the EYA1 gene, while unaffected members have the wild-type allele at this locus. This mutation is a frameshift mutation, which results in the early appearance of the stop codon, and has not been reported so far. According to ACMG guidelines, the variant was preliminarily determined to be suspected pathogenic. Conclusion:The newly discovered EYA1c. 1744delC（p. L592Cfs*47） mutation in this family is the pathogenic mutant gene of the patients in this family, which further expands the mutation spectrum of EYA1 gene, gives us a new understanding of the disease, and provides an important reference for clinical diagnosis and genetic counseling.

Highly reactive carbonated recycled concrete fines prepared via mechanochemical carbonation: Influence on the early performance of cement composites

Carbonated recycled concrete fines (RCF) possess the potential to serve as supplementary cementitious materials (SCMs). However, calcium carbonate (Cc) formed during traditional carbonation methods generally shows low reactivity. Moreover, the remaining calcium silicate hydrate (C-S-H) with a low Ca/Si ratio exhibits enhanced resistance to decalcification, leading to the formation of lower content of silica gels. These factors limit the reactivity and utilization of carbonated RCF in cementitious systems. In the present work, mechanochemistry was introduced into the RCF carbonation process, a technique named mechanochemical carbonation (MC), to enhance the reactivity of carbonated RCF. This study delved into the influence of MC-treated RCF (MCR) on the early performance of cement composites. The findings reveal that MCR exerted a more pronounced promotional effect on cement hydration, as demonstrated by the earlier appearance of hydration peaks for silicates and aluminates, coupled with increased peak intensity. This then resulted in a notable enhancement in early compressive strength. Specifically, with 10 wt% MCR, the compressive strength increased by approximately 19.9 % and 24.7 % at 1 d and 3 d, respectively. In comparison, samples incorporating wet carbonated RCF (WCR) demonstrated lower enhancements, with increases of only 4.5 % and 12.0 % at 1 d and 3 d, respectively. The enhanced performance of MCR can be attributed to the increased formation of nano-sized amorphous silica gels and metastable Cc. These components exhibit elevated reactivity and contribute to seeding effects, thereby promoting the overall reactivity and strength development of the cementitious system. These findings underscore the promising application potential of MC in transforming RCF into highly reactive SCMs.

Adopting the visual perspective of a group member is influenced by implicit group averaging.

As social entities, individuals' perception and behaviors are susceptible to the influence of their social groups. Previous research has consistently shown that the group context in which individuals are situated significantly influences their perceptual processing. We aim to investigate whether the group context in which another individual is situated alters our understanding of their visual perception, which holds profound implications for interpersonal interactions. To address this inquiry, we conducted three experiments. In Experiment 1, participants were presented with a visual scene depicting multiple avatars seated around a table, all facing an arrow positioned at the center of the table. They were instructed to adopt the visual perspective of a specific avatar within the group to perceive the arrow's orientation, and then reproduce its orientation from their own perspectives. We found that participants exhibited a bias towards the group's average perspective when reproducing the arrow's orientation. Experiment 2 further demonstrated that reinforced group processing could elicit an earlier appearance of this bias. In Experiment 3, we investigated an alternative explanation positing that the aforementioned bias originated from visual ensemble perception rather than group influence by instructing participants to reproduce the target avatar's position relative to the arrow's orientation. If the bias indeed originated from ensemble perception, it should also manifest in this task. However, the absence of any reproduction bias refuted this possibility. Through these experiments, we demonstrate that our understanding of an individual's perceptual experiences is influenced by the social context in which they are situated, which manifests as a convergence phenomenon.

Magnetic field breakout in ultramassive crystallizing white dwarfs

ABSTRACT Ultramassive white dwarfs with masses $M\gtrsim 1.1\, {\rm M}_{\odot }$ probe extreme physics near the Chandrasekhar limit. Despite the rapid increase in observations, it is still unclear how many harbour carbon–oxygen (CO) versus oxygen–neon (ONe) cores. The origin of these white dwarfs and their strong magnetic fields – single stellar evolution or a stellar merger – is another open question. The steep mass–radius relation of the relativistic ultramassive white dwarfs shortens their crystallization time $t_{\rm cryst}$, such that the recently proposed crystallization dynamo mechanism may present an alternative to mergers in explaining the early appearance of magnetism in the observed population. However, the magnetic diffusion time from the convective dynamo to the white dwarf’s surface delays the magnetic field’s breakout time $t_{\rm break}\gt t_{\rm cryst}$. We compute $t_{\rm break}(M)$ for CO and ONe ultramassive white dwarfs and compare it to the local 40 pc volume-limited sample. We find that the breakout time from CO cores is too long to account for the observations. ONe crystallization dynamos remain a viable option, but their surrounding non-convective envelopes comprise only a few per cent of the total mass, such that $t_{\rm break}$ is highly sensitive to the details of stellar evolution.

Effects of Dimethyl Ether and Propane Blends on Knocking Behavior in a Boosted SI Engine

<div>Dimethyl ether (DME) is an alternative fuel that, blended with propane, could be an excellent alternative for exploring the use of fuels from renewable sources. DME–propane blends are feasible for their comparable physicochemical properties; these fuels may be pressured as liquids using moderate pressure at ambient temperature. Adding a proportion of DME with a low octane number to a less reactive fuel like propane can improve the combustion process. However, the increased reactivity of the mixture induced by the DME could lead to the early appearance of knocking, and this tendency may even be pronounced in boosted SI engines. Hence, this study experimentally analyzes the effect of E10 gasoline (baseline) and DME–propane blends, with varying proportions of DME in propane ranging from 0% to 30% by weight, in increments of 5% on knocking tendency, combustion characteristics, gaseous emissions, and particle number concentration, under different intake pressure conditions (0.8, 0.9, 1.0, and 1.1 bar) in an SI engine. The results show that as the proportion of DME in the propane blend rises, the knocking tendency becomes more pronounced. That behavior intensifies with increasing intake pressure, but with 20% DME in the propane blend, reaching the maximum brake torque (MBT) without knocking in the four boosted conditions is feasible. The presence of knock limited the advance of combustion phasing and decreased the gross indicated thermal efficiency (ITEg) with E10 gasoline and 25% and 30% DME in propane blends under 1.0 and 1.1 bar boosted conditions. In these knock-limited circumstances, the NOx emissions decreased due to the retarded phasing, and THC and PN emissions increased due to the lower combustion stability, considerably raising the concentration of accumulation mode particles in the particle size distribution (PSD) compared to the other fuel blends tested.</div>

Potential Usefulness of IgA for the Early Detection of SARS-CoV-2 Infection: Comparison With IgM.

Serological testing can be a powerful complementary approach to achieve timely diagnosis of severe acute respiratory coronavirus 2 (SARS-CoV-2) infection, along with nucleic acid detection. Immunoglobulin (Ig) A antibodies are less frequently utilized to detect SARS-CoV-2 infection than IgM and IgG antibodies, even though IgA antibodies play an important role in protective immunity against SARS-CoV-2. This review discusses the differences in kinetics and assay performance between IgA and IgM antibodies and the factors influencing antibody responses. It highlights the potential usefulness of analyzing IgA antibodies for the early detection of SARS-CoV-2 infection. The early appearance of IgA and the high sensitivity of IgA-based immunoassays can aid in diagnosing coronavirus disease 2019. However, because of cross-reactivity, it is important to recognize the only moderate specificity of the early detection of SARS-CoV-2 IgA antibodies against spike antigens. Either the analysis of antibodies targeting the nucleocapsid antigen or a combination of antibodies against the nucleocapsid and spike antigens may strengthen the accuracy of serological evaluation.

Influence of corrosion on seismic performance of steel beam-to-column connections

Steel structures are not only subjected to the threaten of single hazard (e.g., earthquake), but also suffers from the coupling environmental effect such as corrosion throughout the entire service life cycle. This study explores the seismic performance of steel beam-to-column connections after corrosion. Accelerated corrosion tests were conducted on a series of practical steel beam-to-column connections, and the seismic performances of the specimens before and after corrosion were compared. A modeling method of corroded steel members that considers distribution randomness of corrosion depth was proposed. Finally, the proposed method is applied to conduct time-dependent seismic performance prediction of corroded beam-to-column connections. The results show that corrosion mainly influences the buckling and post buckling behaviors of steel beam-to-column connections. Due to earlier appearance of local buckling, more evident stiffness degradation is observed for the corroded specimen. Corrosion also induces performance degradation of the panel zone. For the corroded specimen with cover plate, multiple small cracks initiate at the junction between the cover plate and beam flange, and fracture damage is more likely to happen for the beam-to-column connections after corrosion. Both yield and ultimate load-carrying capacities of the connections decrease linearly with the increase of accelerated corrosion time, and the load-carrying capacity deterioration rate of the cover plate strengthened connection is quicker than that of the un-strengthened connection. The initial stiffness approximately degrades linearly with the increase of corrosion time. Corrosion degree also influences the energy dissipation capability of the beam-to-column connections, especially after the occurrence of local buckling.