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1.
Nanotechnology ; 33(24)2022 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-35272272

RESUMEN

Smart surfaces with switchable wettability are widely studied for environmental application. Although a large number of stimulation routes provide broad prospects for the development of smart surfaces, achieving high sensitivity, fast response and recovery, simple operation, security and good stability is still challenging. Herein, a Janus membrane via electrospinning, chemical bath deposition and heat treatment is constructed. By using the hydrophilic ZIF-L nanosheet to functionalize the hydrophobic thermoplastic polyurethane (TPU) substrate, a smart surface utilizes the ZIF-L crack induced by strain in the hydrophilic layer to control surface wettability is obtained. In the range of 0%-100% strain, the wettability of the smart surface presents an obvious change with stretching, and water contact angle of the surface shows a monotonic increase with a maximum tuning range from 47° to 114°. Due to local fusion of the TPU microfibers and good binding between the ZIF-L layer and the TPU substrate after heat treatment, the prepared Janus membrane exhibits consistent and symmetrical hydrophilic-hydrophobic-hydrophilic transition curves in 50 stretching-releasing cycles. Thanks to the porous and asymmetric architecture, the membrane shows good oil-water separation performance, and the separation flux increases with the increase of strain, while the separation efficiency is always higher than 98%. Because of the excellent structural stability, the robust membrane with 100% strain maintains its oil-water separation property for 50 stretching-releasing cycles. This study provides a new perspective for the development of smart material with stimuli responsive surface for oily wastewater purification.

2.
Proc Natl Acad Sci U S A ; 116(33): 16641-16650, 2019 08 13.
Artículo en Inglés | MEDLINE | ID: mdl-31363048

RESUMEN

Active DNA demethylation is critical for controlling the DNA methylomes in plants and mammals. However, little is known about how DNA demethylases are recruited to target loci, and the involvement of chromatin marks in this process. Here, we identify 2 components of the SWR1 chromatin-remodeling complex, PIE1 and ARP6, as required for ROS1-mediated DNA demethylation, and discover 2 SWR1-associated bromodomain-containing proteins, AtMBD9 and nuclear protein X1 (NPX1). AtMBD9 and NPX1 recognize histone acetylation marks established by increased DNA methylation 1 (IDM1), a known regulator of DNA demethylation, redundantly facilitating H2A.Z deposition at IDM1 target loci. We show that at some genomic regions, H2A.Z and DNA methylation marks coexist, and H2A.Z physically interacts with ROS1 to regulate DNA demethylation and antisilencing. Our results unveil a mechanism through which DNA demethylases can be recruited to specific target loci exhibiting particular histone marks, providing a conceptual framework to understand how chromatin marks regulate DNA demethylation.


Asunto(s)
Proteínas de Arabidopsis/metabolismo , Arabidopsis/metabolismo , Desmetilación del ADN , Histonas/metabolismo , Complejos Multiproteicos/metabolismo , Acetilación , Cromatina/metabolismo , Silenciador del Gen , Modelos Biológicos , Mutación/genética , Unión Proteica , Subunidades de Proteína/metabolismo
3.
Health Care Women Int ; : 1-21, 2022 Sep 07.
Artículo en Inglés | MEDLINE | ID: mdl-36074802

RESUMEN

Researchers have examined the efficacy of a horticultural stress management program for menopausal women. The quasi-experimental research design was employed by providing stress management and horticulture techniques to the experimental group (n = 55), whereas an informational pamphlet was given to the control group (n = 42). Moreover, this management program was comprised of hands-on training (Herb testing and smelling, Rocky Leaf prints, Grass Doll activity, and Kokedama activity), short lectures, and group discussions (sessions) for two hours, once a week, and continued for four weeks. Data was gathered from public-related activities i.e., camps on women's health and it consisted of three stages; before and after management and one month after completion of the intervention. The primary goal was to increase the stress coping ability, while the secondary goal was to enhance the psychological well-being and decrease menopausal symptoms. The aspects of horticultural attitude, cognitive flexibility, manageability, and knowledge of menopause were measured by using ANCOVA on SPSS 17 v. All the aspects significantly improved in the experimental group. Knowledge of menopause, horticultural attitude, cognitive flexibility, and manageability of stress significantly improved in the experimental group.

4.
Cancer Sci ; 112(7): 2652-2663, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33934440

RESUMEN

Mitochondria are key cytoplasmic organelles. Their activation is critical for the generation of T cell proliferation and cytotoxicity. Exhausted tumor-infiltrating T cells show a decreased mitochondrial function and mass. 5-Aminolevulinic acid (5-ALA), a natural amino acid that is only produced in the mitochondria, has been shown to influence metabolic functions. We hypothesized that 5-ALA with sodium ferrous citrate (SFC) might provide metabolic support for tumor-infiltrating T cells. In a mouse melanoma model, we found that 5-ALA/SFC with a programmed cell death-ligand 1 (PD-L1) blocking Ab synergized tumor regression. After treatment with 5-ALA/SFC and anti-PD-L1 Ab, tumor infiltrating lymphocytes (TILs) were not only competent for the production of cytolytic particles and cytokines (granzyme B, interleukin-2, and γ-interferon) but also showed enhanced Ki-67 activity (a proliferation marker). The number of activated T cells (PD-1+ Tim-3- ) was also significantly increased. Furthermore, we found that 5-ALA/SFC activated the mitochondrial functions, including the oxygen consumption rate, ATP level, and complex V expression. The mRNA levels of Nrf-2, HO-1, Sirt-1, and PGC-1α and the protein levels of Sirt-1 were upregulated by treatment with 5-ALA/SFC. Taken together, our findings revealed that 5-ALA/SFC could be a key metabolic regulator in exhausted T cell metabolism and suggested that 5-ALA/SFC might synergize with anti-PD-1/PD-L1 therapy to boost the intratumoral efficacy of tumor-specific T cells. Our study not only revealed a new aspect of immune metabolism, but also paved the way to develop a strategy for combined anti-PD-1/PD-L1 cancer immunotherapy.


Asunto(s)
Ácido Aminolevulínico/farmacología , Antígeno B7-H1/antagonistas & inhibidores , Ácido Cítrico/farmacología , Compuestos Ferrosos/farmacología , Activación de Linfocitos/efectos de los fármacos , Linfocitos Infiltrantes de Tumor/efectos de los fármacos , Mitocondrias/efectos de los fármacos , Adenosina Trifosfato/metabolismo , Animales , Línea Celular Tumoral , Terapia Combinada , Femenino , Hemo-Oxigenasa 1/metabolismo , Receptor 2 Celular del Virus de la Hepatitis A/metabolismo , Antígeno Ki-67/metabolismo , Recuento de Linfocitos , Linfocitos Infiltrantes de Tumor/citología , Linfocitos Infiltrantes de Tumor/metabolismo , Melanoma Experimental/inmunología , Melanoma Experimental/metabolismo , Melanoma Experimental/patología , Melanoma Experimental/terapia , Proteínas de la Membrana/metabolismo , Ratones , Ratones Endogámicos BALB C , Ratones Endogámicos C57BL , Mitocondrias/metabolismo , Factor Nuclear 1 de Respiración/metabolismo , Consumo de Oxígeno/efectos de los fármacos , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/metabolismo , Sirtuina 1/metabolismo
5.
Surg Radiol Anat ; 42(12): 1501-1508, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32797265

RESUMEN

PURPOSE: Total mesopancreas excision has been found to be helpful for increasing no residual tumor resection rate and improving the prognosis of pancreatic cancer. This study analyzed the relationships among the mesopancreas and pancreatic head plexus from the morphological, developmental, and clinical perspectives. METHODS: Twenty-four cadavers were employed. The upper abdominal viscera were resected en-bloc with the hepatoduodenal ligament, abdominal aorta, and nerve plexuses, and the innervation of the pancreas was dissected. Ten additional cadavers were used for histological examination of the pancreatic head and neck, part of the duodenum, the superior mesenteric artery (SMA) and its surrounding tissues, and the related arteries and veins. RESULTS: As results, cross-sections of the SMA revealed 6-9 layers of membranous structures resembling the layers of an onion, and the nerve fibers of the superior mesenteric plexus ran between the layers. Loose areolar tissue, adipose tissue, and lymphatics existed between the SMA and the pancreatic head/uncinate process, along with abundant thin blood vessels and capillaries, but very few nerves were found approaching the pancreas. Several parallel layers of collagen fibers (so-called Treitz's fusion fascia) existed between the dorsal aspect of the pancreatic head and the aortocaval plane. CONCLUSION: The mesopancreas was continuous and connected with the para-aortic area. It may be better termed the mesopancreatoduodenum than the mesopancreas, as the duodenum-pancreas-SMA forms a complex morphological, developmental, functional, and pathological structure.


Asunto(s)
Páncreas/inervación , Anciano , Anciano de 80 o más Años , Variación Anatómica , Plexo Celíaco/anatomía & histología , Fascia/anatomía & histología , Femenino , Humanos , Masculino
6.
J Integr Plant Biol ; 60(8): 626-631, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29762900

RESUMEN

We developed simplified single transcriptional unit (SSTU) CRISPR systems for multiplex gene editing in rice using FnCpf1, LbCpf1 or Cas9, in which the nuclease and its crRNA array are co-expressed from a single Pol II promoter, without any additional processing machinery. Our SSTU systems are easy to construct and effective in mediating multiplex genome editing.


Asunto(s)
Sistemas CRISPR-Cas/genética , Edición Génica , Oryza/genética , Repeticiones Palindrómicas Cortas Agrupadas y Regularmente Espaciadas/genética , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo
7.
Plant Mol Biol ; 95(6): 533-547, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29076026

RESUMEN

KEY MESSAGE: We report a transcriptome assembly and expression profiles from RNA-Seq data and identify genes responsible for culm gall formation in Zizania latifolia induced by Ustilago esculenta. The smut fungus Ustilago esculenta can induce culm gall in Zizania latifolia, which is used as a vegetable in Asian countries. However, the underlying molecular mechanism of culm gall formation is still unclear. To characterize the processes underlying this host-fungus association, we performed transcriptomic and expression profiling analyses of culms from Z. latifolia infected by the fungus U. esculenta. Transcriptomic analysis detected U. esculenta induced differential expression of 19,033 and 17,669 genes in Jiaobai (JB) and Huijiao (HJ) type of gall, respectively. Additionally, to detect the potential gall inducing genes, expression profiles of infected culms collected at -7, 1 and 10 DAS of culm gall development were  analyzed. Compared to control, we detected 8089 genes (4389 up-regulated, 3700 down-regulated) and 5251 genes (3121 up-regulated, 2130 down-regulated) were differentially expressed in JB and HJ, respectively. And we identified 376 host and 187 fungal candidate genes that showed stage-specific expression pattern, which are  possibly responsible for gall formation at the initial and later phases, respectively. Our results indicated that cytokinins play more prominent roles in regulating gall formation than do auxins. Together, our work provides general implications for the understanding of gene regulatory networks for culm gall development in Z. latifolia, and potential targets for genetic manipulation to improve the future yield   of  this crop.


Asunto(s)
Tallos de la Planta/crecimiento & desarrollo , Tallos de la Planta/genética , Poaceae/genética , Poaceae/microbiología , Análisis de Secuencia de ARN/métodos , Ustilago/fisiología , Vías Biosintéticas/genética , Citocininas/biosíntesis , Regulación hacia Abajo/genética , Perfilación de la Expresión Génica , Regulación de la Expresión Génica de las Plantas , Ontología de Genes , Genes Fúngicos , Interacciones Huésped-Patógeno/genética , Ácidos Indolacéticos/metabolismo , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Tallos de la Planta/microbiología , Tumores de Planta/microbiología , Poaceae/crecimiento & desarrollo , Reacción en Cadena en Tiempo Real de la Polimerasa , Reproducibilidad de los Resultados , Transcriptoma/genética , Regulación hacia Arriba/genética
8.
J Exp Child Psychol ; 136: 82-91, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25866145

RESUMEN

We investigated whether social learning, specifically imitation, can advance preschoolers' understanding of weight. Preschoolers were randomly assigned to experimental and control groups. The experimental group saw an adult intentionally categorize an array of four visually identical objects based on weight. Then, children's weight-based sorting of the objects was evaluated. To test generalization, children were presented with novel objects (differing in shape, color, and weight from the original ones) and not shown what to do with them. Results indicate that 48-month-olds learned to sort by weight via observing the adult's demonstration of categorization and that children generalized weight sorting to novel objects. This shows that children imitate at a more abstract level than merely motor actions. They learn and imitate generalizable rules. 36-month-olds did not succeed on this weight sorting task. Children's cognitive development constrains what children learn through social observation and imitation.


Asunto(s)
Desarrollo Infantil , Conducta Imitativa , Aprendizaje Social , Percepción del Peso , Factores de Edad , Preescolar , Femenino , Humanos , Masculino , Distribución Aleatoria
10.
Sci Rep ; 14(1): 4789, 2024 02 27.
Artículo en Inglés | MEDLINE | ID: mdl-38413819

RESUMEN

Phytophthora blight severely threatens global pepper production. Grafting bolsters plant disease resistance, but the underlying molecular mechanisms remain unclear. In this study, we used P. capsici-resistant strain 'ZCM334' and susceptible strain 'Early Calwonder' for grafting. Compared to self-rooted 'Early Calwonder' plants, 'ZCM334' grafts exhibited delayed disease onset, elevated resistance, and reduced leaf cell damage, showcasing the potential of grafting in enhancing pepper resistance to P. capsici. Proteomic analysis via the iTRAQ technology unveiled 478 and 349 differentially expressed proteins (DEPs) in the leaves and roots, respectively, between the grafts and self-rooted plants. These DEPs were linked to metabolism and cellular processes, stimulus responses, and catalytic activity and were significantly enriched in the biosynthesis of secondary metabolites, carbon fixation in photosynthetic organizations, and pyruvate metabolism pathways. Twelve DEPs exhibiting consistent expression trends in both leaves and roots, including seven related to P. capsici resistance, were screened. qRT-PCR analysis confirmed a significant correlation between the protein and transcript levels of DEPs after P. capsici inoculation. This study highlights the molecular mechanisms whereby grafting enhances pepper resistance to Phytophthora blight. Identification of key genes provides a foundation for studying the regulatory network governing the resistance of pepper to P. capsici.


Asunto(s)
Capsicum , Phytophthora , Piper nigrum , Phytophthora/fisiología , Proteómica , Resistencia a la Enfermedad/genética , Enfermedades de las Plantas/genética , Capsicum/genética
11.
Front Neurol ; 15: 1327206, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38689877

RESUMEN

Background: Bell's palsy is an acute peripheral facial neuropathy, which is one of the most common causes of facial palsy of lower motor neurons. Facial nerve swelling is commonly observed in Bell's palsy. Acupuncture therapy has been widely used in the treatment of Bell's palsy. However, whether acupuncture can be effectively used in the acute stage is still controversial. There are no clinical trials conducted previously to evaluate the effect of acupuncture on facial nerve edema in Bell's palsy patients. The study aims to evaluate the potential efficacy of different acupuncture modalities on Bell's palsy patients in the acute phase, its effect on facial nerve edema, and to preliminarily explore its possible mechanism. Methods and analysis: In this randomized, controlled trial, 165 Bell's palsy patients with unilateral onset within 3 days will be recruited and randomly assigned to either the electroacupuncture group (n = 33), the acupuncture group (n = 33), the sham acupuncture group (n = 33), the blank control group (n = 33), or the acupuncture control group (n = 33) in a 1:1:1:1:1 ratio. The participants will receive 4 weeks of treatment and 8 weeks of follow-up. The five groups of participants will receive the following treatments: A: Electroacupuncture + Medication (prednisone acetate tablets, mecobalamin tablets, and vitamin B1 tablets); B: Acupuncture + Medication; C: Sham Acupuncture + Medication; D: Medication only; and E: Acupuncture only. The primary outcome will be the effectiveness rate of different acupuncture modalities in improving facial nerve function after the intervention period. The secondary outcomes will be the recovery speed, the diameter of the facial nerve, the echo intensity and thickness of facial muscles, blood flow parameters of the facial artery, the serum inflammatory level, safety evaluation, and adverse events. Preliminary exploration of its mechanism of action occurs through inflammation and immune response. The difference between groups will be assessed using repeated measure analysis of covariance (ANCOVA) and trend chi-square. Discussion: The trial will evaluate the efficacy and facial nerve edema of acupuncture for Bell's palsy patients in the acute phase and preliminarily explore its possible mechanism. The results thus may provide evidence for clinical application. Clinical trial registration: https://www.chictr.org.cn/bin/project/edit?pid=133211, identifier ChiCTR2100050815.

12.
Br J Dev Psychol ; 41(3): 259-275, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37019847

RESUMEN

Rituals are fundamental social acts that structure relationships and enable the filtering of important cognitive attributes (e.g. working memory and inhibitory control) that make humans what they are today. This study investigated the influence of model age and familiarity on the reproduction of ritual behaviour in five-year-old children. Through an exploration of these factors, this study sheds light on the cognitive mechanisms children use to comprehend and replicate rituals. Ninety-eight five-year-old children were divided into two groups: an experimental group, which observed an adult or child model, either familiar or unfamiliar to them, demonstrating eight ritual acts; and a control group, which received no video demonstration. The results revealed that children who observed an adult reproduced more ritual acts than those who observed a child, and children who observed unfamiliar models reproduced ritual acts more frequently than those who observed familiar ones. Additionally, when exposed to unfamiliar models, children's reproductive fidelity was higher. These findings suggest that children have the ability to address new adaptation challenges by participating in rituals at an early age and that they generate suitable solutions depending on the model's characteristics. This provides evidence for the adaptive bias in children's cultural learning from a ritual perspective.


Asunto(s)
Conducta Ceremonial , Reproducción , Humanos , Niño , Preescolar
13.
Heliyon ; 9(12): e22709, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38125416

RESUMEN

Faced with growing ecological problems, governments around the world are increasingly focusing on improving ecology and the environment. The topic of urban green transformation has attracted a great deal of research. However, not much of it has focused on the effectiveness of government environmental auditing, especially from the perspective of its role in sustainable governance. This article takes 285 cities in China from 2009 to 2020 as the research scale. It innovatively measures government environmental audits with dual indicators and uses System Gaussian Mixture Model (SGMM) to estimate that government environmental audits significantly promote urban green transformation, and the impact of "whether to implement government environmental auditing" is greater than the "intensity of government environmental auditing". The results show that government environmental audit intensity has a stronger impact on urban green transformation in eastern cities. In contrast, environmental audit coverage has a stronger impact in western cities. Moreover, the effect of government environmental auditing on green transformation is more significant in small and medium-sized cities and key environmental protection cities than in large cities and non-key environmental protection cities, respectively. Government environmental auditing could facilitate urban green transformation by restraining local government behavior, forcing green technology innovation, and promoting industrial structural upgrading. In addition, the intensity of government environmental auditing can better act on green transformation through the fore-mentioned mechanisms. It can play a crucial role in green technology innovation.

14.
Nat Plants ; 9(7): 1081-1093, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37400513

RESUMEN

The nuclear lamina is a complex network of nuclear lamins and lamin-associated nuclear membrane proteins, which scaffold the nucleus to maintain structural integrity. In Arabidopsis thaliana, nuclear matrix constituent proteins (NMCPs) are essential components of the nuclear lamina and are required to maintain the structural integrity of the nucleus and specific perinuclear chromatin anchoring. At the nuclear periphery, suppressed chromatin overlapping with repetitive sequences and inactive protein-coding genes are enriched. At a chromosomal level, plant chromatin organization in interphase nuclei is flexible and responds to various developmental cues and environmental stimuli. On the basis of these observations in Arabidopsis, and given the role of NMCP genes (CRWN1 and CRWN4) in organizing chromatin positioning at the nuclear periphery, one can expect considerable changes in chromatin-nuclear lamina interactions when the global chromatin organization patterns are being altered in plants. Here we report the highly flexible nature of the plant nuclear lamina, which disassembles substantially under various stress conditions. Focusing on heat stress, we reveal that chromatin domains, initially tethered to the nuclear envelope, remain largely associated with CRWN1 and become scattered in the inner nuclear space. By investigating the three-dimensional chromatin contact network, we further reveal that CRWN1 proteins play a structural role in shaping the changes in genome folding under heat stress. Also, CRWN1 acts as a negative transcriptional coregulator to modulate the shift of the plant transcriptome profile in response to heat stress.


Asunto(s)
Arabidopsis , Lámina Nuclear , Lámina Nuclear/genética , Lámina Nuclear/metabolismo , Núcleo Celular/genética , Núcleo Celular/metabolismo , Cromatina/genética , Cromatina/metabolismo , Membrana Nuclear/metabolismo , Laminas/genética , Laminas/metabolismo , Arabidopsis/genética , Arabidopsis/metabolismo
15.
Pharmaceutics ; 15(9)2023 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-37765265

RESUMEN

Intraperitoneal injection of dihydromyricetin (DMY) has shown promising potential in the treatment of alcoholism. However, its therapeutic effect is limited due to its low solubility, poor stability, and high gut-liver first-pass metabolism, resulting in very low oral bioavailability. In this study, we developed a DMY-loaded self-emulsifying drug delivery system (DMY-SEDDS) to enhance the oral bioavailability and anti-alcoholism effect of DMY. DMY-SEDDS improved the oral absorption of DMY by facilitating lymphatic transport. The area under the concentration-time curve (AUC) of DMY in the DMY-SEDDS group was 4.13-fold higher than in the DMY suspension group. Furthermore, treatment with DMY-SEDDS significantly enhanced the activities of alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH) in the liver of mice (p < 0.05). Interestingly, DMY-SEDDS also increased ADH activity in the stomach of mice with alcoholism (p < 0.01), thereby enhancing ethanol metabolism in the gastrointestinal tract and reducing ethanol absorption into the bloodstream. As a result, the blood alcohol concentration of mice with alcoholism was significantly decreased after DMY-SEDDS treatment (p < 0.01). In the acute alcoholism mice model, compared to saline treatment, DMY-SEDDS prolonged the onset of LORR (loss of righting reflex) (p < 0.05) and significantly shortened the duration of LORR (p < 0.01). Additionally, DMY-SEDDS treatment significantly reduced gastric injury in acute alcoholism mice. Collectively, these findings demonstrate the potential of DMY-SEDDS as a treatment in the treatment of alcoholism.

16.
Front Psychiatry ; 13: 713620, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35250654

RESUMEN

OBJECTIVE: The aim of the present study is to investigate whether parenting stress mediate the relationship between social support and quality of life in parents of children with Autistic Spectrum Disorder. In addition, we examined what other variables moderate the relationships in this mediation model. METHODS: Using the two-stage meta-analytic structural equation modeling approach (MASEM), 44 correlation matrices were synthesized from 28 empirical studies (N = 13,270) and fitted to the hypothesized mediation model. RESULTS: There is a significant partial mediation effect of parenting stress on the relationship between social support and quality of life. Subgroup analysis through the first stage analysis suggested that social support measurements, parental role, and child's age moderated the relationship between social support and parenting stress, and that the focus of quality of life moderated the relationship between social support and quality of life. Subgroup analysis through the second stage analysis indicated that parenting stress had a significantly stronger predictive effect on quality of life in Western culture, while the predictive effect of social support on quality of life was significantly stronger in Eastern culture. CONCLUSION: Having more social support can reduce parents' stress and then improving their quality of life, which can help them cope more positively and effectively with their autistic children.

17.
Front Public Health ; 10: 847161, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35425751

RESUMEN

The main purpose of this study is to investigate what topic indicators correlate with public sentiment during "coronavirus disease 2019 (COVID-19) epidemic" and which indicators control the complex networks of the topic indicators. We obtained 68,098 Weibo, categorized them into 11 topic indicators, and grouped these indicators into three dimensions. Then, we constructed the complex networks model of Weibo's topics and examined the key indicators affecting the public's sentiment during the major public emergency. The results showed that "positive emotion" is positively correlated with "recordings of epidemic" and "foreign comparisons," while "negative emotion" is negatively correlated with "government image," "recordings of epidemic," and "asking for help online." In addition, the two vertexes of "recordings of epidemic" and "foreign comparisons" are the most important "bridges" which connect the government and the public. The "recordings of epidemic" is the main connection "hub" between the government and the media. In other words, the "recordings of epidemic" is the central topic indicator that controls the entire topic network. In conclusion, the government should publish the advance of the events through official media on time and transparent way and create a platform where everyone can speak directly to the government for advice and assistance during a major public emergency in the future.


Asunto(s)
COVID-19 , Medios de Comunicación Sociales , Actitud , COVID-19/epidemiología , Urgencias Médicas , Humanos , SARS-CoV-2
18.
Int J Womens Health ; 13: 1017-1023, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34737650

RESUMEN

PURPOSE: Leading a normal life and managing daily psychological or physical stress is hard for everybody but when a person is diagnosed with gestational diabetes mellitus (GDM) during a widespread pandemic, the battle is inescapable. This research aimed to explore some positive dimensions that can lessen the adversities of these women. DESIGN AND METHODS: We assessed all 200 cases of GDM who were registered in the maternity wards of the government and private hospitals of South Punjab, Pakistan. Respondents were diagnosed with GDM during the first wave of COVID-19. Post-traumatic growth (PTG) inventory, Family environment scale, and Partner supportive communication (PSC) scale were used. SEM and moderation analysis was conducted to test the hypothesized relationship among the variables. RESULTS: Result showed that elicitation of thoughts and feelings (ß = 0.109, t-value = 3.501, p = 0.001), effective listening (ß = -0.144, t-value = 1.928, p = 0.054), and communication towards partner (ß = -0.209, t-value = 4.850, p = 0.005) significantly moderated the relationship between family environment and post traumatic growth. PRACTICAL IMPLICATIONS: This research is beneficial for health practitioners because the trauma of being diagnosed with such a disease can be alleviated by the role of family environment and PSC.

19.
Br J Dev Psychol ; 39(1): 133-152, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33095503

RESUMEN

Children selectively imitate in-group over outgroup individuals under certain experimental conditions. We investigated whether this bias applies to gender in-groups in China. Three- and five-year-olds were shown how to operate novel objects by same-gender and opposite-gender models. Results indicate that the combination of verbally highlighting the gender identity of the model (e.g., 'I am a girl') and making gender norms explicit (e.g., 'girls play this way') significantly enhances high-fidelity imitation. This 'double social effect' was more robust in 5-year-olds than 3-year-olds. Our results underscore how language about gender and the norms for gender-based groups influence behavioural imitation. The pattern of findings enhances our knowledge about pre-schoolers' social learning and imitation as well as the powerful influence of language and group norms on children's voluntary actions and learning.


Asunto(s)
Conducta Imitativa , Aprendizaje Social , Niño , Preescolar , China , Femenino , Identidad de Género , Humanos , Lenguaje , Masculino
20.
Polymers (Basel) ; 13(20)2021 Oct 12.
Artículo en Inglés | MEDLINE | ID: mdl-34685251

RESUMEN

A novel type of dual responsive nanogels was synthesized by physical crosslinking of polylactic acid stereocomplexation: temperature and reduction dual stimulation responsive gels were formed in situ by mixing equal amounts of PLA (Poly (Lactic Acid)) enantiomeric graft copolymer micellar solution; the properties of double stimulation response make it more targeted in the field of drug release. The structural composition of the gels was studied by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FT-IR). Using transmission electron microscope (TEM) and dynamic light scattering (DLS) instruments, the differences in morphology and particle size were analyzed (indicating that nanogels have dual stimulus responses of temperature sensitivity and reduction). The Wide-Angle X-ray diffractionr (WAXD) was used to prove the stereocomplexation of PLA in the gels, the mechanical properties and gelation process of the gels were studied by rheology test. The physically cross-linked gel network generated by the self-recombination of micelles and then stereo-complexation has a more stable structure. The results show that the micelle properties, swelling properties and rheological properties of nanogels can be changed by adjusting the degree of polymerization of polylactic acid. In addition, it provides a safe and practical new method for preparing stable temperature/reduction response physical cross-linked gel.

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