24 research outputs found
Research on the promotion strategy of preschool Labor education from the perspective of preschool connection
Full text linkIn the process of connecting children and children, in addition to moral, intellectual, physical and beauty education,
labor education also occupies a major position. But in the current social background, people do not pay attention to early childhood labor
education or even in a state of neglect. Through analyzing the existing problems and causes of early childhood labor education, this study
puts forward strategies from four aspects: labor consciousness, labor emotion, labor will and labor behavior. Promote the cultivation of
labor consciousness through family labor and natural labor; Games and evaluation promote children’s labor emotion education; Enhance the
contact between school, family and community, and enhance the will to work; To formulate labor education plans for children and promote
the ability of labor behavior, so as to realize the coordinated development of children’s labor consciousness, labor emotion, labor will and
labor behavior
Female perspective on the gender and sexual politics of late-Qing China
No full textx, 276 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.The late-Qing tanci "A Pair of Male Phoenixes Flying Together" (Feng shuangfei ; preface dated 1899) is unusual for its depiction of a wide variety of gender issues and sexual relationships. Because the 52-chapter work is credibly attributed to the female poet Cheng Huiying, who is known to have written the poetry collection Beichuang yin 'gao , the tanci gives scholars a unique opportunity to see how a gentry woman thought of the gender roles and sexual politics of the late Qing.
My dissertation contains two major sections. Chapters I and II look at Cheng Huiying and her work as part of the `talented women" ( cainü ) culture. These two chapters demonstrate how Cheng Huiying deliberately establishes herself as a unique female writing subject and advocates women's agency in determining their own marriage arrangements. one of women's biggest concerns in premodern China.
Chapters III to VI put Feng shuangfei into the larger context of male-authored fiction and examine how it adopts and rewrites the conventions and motifs common to xiaoshuo fiction from a female writer's perspective. I first argue that Feng shuangfei can be considered a serious literary work due to its sophisticated structural design and characterization, although tanci are usually considered as more popular literature. I then evaluate how the female author of this tanci subtly reinvents three gendered motifs that commonly appear in male-authored xiaoshuo fiction. The three motifs are male same-sex eroticism and homosociality, female same-sex desires, and the stereotypes of shrew and ideal wife. Through subtle twists in the plot, the tanci suggests the possibility of the expression of female subjectivity and agency within patriarchal Confucian society even while it follows and supports the normative Confucian order.
The perspectives on gender norms and sexual practices offered in this tanci both display how a gentry woman thought about these issues in late imperial China and suggest how the rapid and vast social and ideological changes occurring during the turn of the century opened new spaces for Cheng Huiying to imagine increased agency and autonomy for women within the domestic sphere.Committee in charge: Maram Epstein, Chairperson, East Asian Languages & Literature;
Yugen Wang, Member, East Asian Languages & Literature;
Tze-lan Sang, Member, East Asian Languages & Literature;
Ina Asim, Outside Member, Histor
Epidemiological characteristics of nasopharyngeal microbiota profiles in community children under 5 years in Haidong City， Qinghai Province
Full text linkObjectiveTo describe the characteristics of the nasopharyngeal microbiota in children under 5 years of age in Haidong City, Qinghai Province and analyze its associated factors, so as to provide basic data for the evolution and development of nasopharyngeal microbiota in children.MethodsA total of 230 community children from Haidong City, Qinghai Province were included in the study. Participants’ basic information was collected by local volunteers from parents/guardians at enrollment. 16S rDNA sequencing was used to identify the bacterial diversity and abundance of nasopharyngeal microbial community. Bioinformatics methods were used to analyze the characteristics of the nasopharyngeal microbiota, compare the differential species, and investigate the correlation with age.ResultsThere was no statistical difference in either Chao1 index or Shannon index of nasopharyngeal microbial communities among children with different ages (P>0.05). Besides, the structure of nasopharyngeal microbiota in children of different ages was different, either (P=0.020). Age, ethnicity and delivery mode, to some extent, could explain the differences in the structure of nasopharyngeal microbiota in children. There were statistically significant differences in the abundance of Dolosigranulum, Staphylococcus and Corynebacterium in the nasopharyngeal microbiota of children with different ages (P<0.05). Differential analysis revealed that Corynebacterium was found to be over-represented in children under 1 year of age, while Dolosigranulum was found to be over-represented in children between 2 and 3 years old. Furthermore, the results of correlation analysis showed that, Moraxella was positively correlated with Corynebacterium, Dolosigranulum and Streptococcus, but negatively correlated with Pseudomonas. In addition, a strong positive correlation was detected between the Dolosigranulum and Corynebacterium.ConclusionThe diversity of nasopharyngeal microbial community among children under 5 years in Haidong City, Qinghai Province is stable. However, there are differences in the species structure, mainly in the abundance difference of Dolosigranulum, Staphylococcus and Corynebacterium. This study provides basic data on the evolution and maturation of nasopharyngeal microbial communities in early childhood, which can provide a scientific basis for the early prevention and diagnosis of respiratory tract infections in children
Defining global gene expression changes of the hypothalamic-pituitary-gonadal axis in female sGnRH-antisense transgenic common carp (Cyprinus carpio).
No full textBACKGROUND: The hypothalamic-pituitary-gonadal (HPG) axis is critical in the development and regulation of reproduction in fish. The inhibition of neuropeptide gonadotropin-releasing hormone (GnRH) expression may diminish or severely hamper gonadal development due to it being the key regulator of the axis, and then provide a model for the comprehensive study of the expression patterns of genes with respect to the fish reproductive system. METHODOLOGY/PRINCIPAL FINDINGS: In a previous study we injected 342 fertilized eggs from the common carp (Cyprinus carpio) with a gene construct that expressed antisense sGnRH. Four years later, we found a total of 38 transgenic fish with abnormal or missing gonads. From this group we selected the 12 sterile females with abnormal ovaries in which we combined suppression subtractive hybridization (SSH) and cDNA microarray analysis to define changes in gene expression of the HPG axis in the present study. As a result, nine, 28, and 212 genes were separately identified as being differentially expressed in hypothalamus, pituitary, and ovary, of which 87 genes were novel. The number of down- and up-regulated genes was five and four (hypothalamus), 16 and 12 (pituitary), 119 and 93 (ovary), respectively. Functional analyses showed that these genes involved in several biological processes, such as biosynthesis, organogenesis, metabolism pathways, immune systems, transport links, and apoptosis. Within these categories, significant genes for neuropeptides, gonadotropins, metabolic, oogenesis and inflammatory factors were identified. CONCLUSIONS/SIGNIFICANCE: This study indicated the progressive scaling-up effect of hypothalamic sGnRH antisense on the pituitary and ovary receptors of female carp and provided comprehensive data with respect to global changes in gene expression throughout the HPG signaling pathway, contributing towards improving our understanding of the molecular mechanisms and regulative pathways in the reproductive system of teleost fish
Nano MnO2 Radially Grown on Lignin-Based Carbon Fiber by One-Step Solution Reaction for Supercapacitors with High Performance
No full textMnO2-deposited lignin-based carbon fiber (MnO2-LCF) mats are fabricated for supercapacitor applications. LCF mats are produced from alkali lignin via electrospinning followed by stabilization and carbonization. The carbonization process is carried out at 800, 900, and 1000 °C, and the corresponding mats are denoted as MnO2-LCF-800, MnO2-LCF-900, and MnO2-LCF-1000, respectively. The LCF mats are immersed in a KMnO4 solution at room temperature for 72 h to obtain MnO2-LCF mats. The scanning electron microscopy and X-ray diffraction analysis confirm the deposition of MnO2 on the LCFs. The Brunauer–Emmett–Teller analysis, X-ray spectroscopy, and Raman spectroscopy reveal that MnO2-LCF-800 mat possesses a large number of mesopores and Mn vacancies as compared to MnO2-LCF-900 mat and MnO2-LCF-1000 mat. Consequently, MnO2-LCF-800 mat possesses the best electrochemical properties with a specific capacitance of 131.28 F∙g−1, an energy density of 14.77 Wh∙kg−1, and a power density of 135.01 W∙kg−1 at a specific current of 0.3 A∙g−1. Hence, MnO2-LCF-800 mat shows high potential to be used as a high-performance supercapacitor
A Review: Using Ionic Liquids for Lignin Extraction from Lignocellulose and High-Value Utilization
No full textLignocellulose is the most abundant renewable resource in nature, providing a large supply of lignin. The efficient separation and utilization of lignin from lignocellulose can help alleviate the current shortage of fossil fuels. Ionic liquids, as green solvents, have been widely applied in the field of biorefining. However, most research has focused on the extraction and purification of cellulose, while lignin is often treated as a by-product. The high-value utilization of lignin has currently emerged as a hot topic. This review summarizes recent advances in the extraction of lignin from lignocellulose using ionic liquids and the mechanisms of lignin extraction. Additionally, it briefly discusses the applications of ionic liquids in the high-value utilization of lignin, including lignin depolymerization, modification, the preparation of lignin-based functional materials, and biofuels. This review aims to provide ideas for the extraction and high-value utilization of lignin through ionic liquids
Fe<sub>3</sub>O<sub>4</sub> Nanoparticles Loaded on Lignin Nanoparticles Applied as a Peroxidase Mimic for the Sensitively Colorimetric Detection of H<sub>2</sub>O<sub>2</sub>
No full textLignin is the second largest naturally renewable resource and is primarily a by-product of the pulp and paper industry; however, its inefficient use presents a challenge. In this work, Fe3O4 nanoparticles loaded on lignin nanoparticles (Fe3O4@LNPs) were prepared by the self-assembly method and it possessed an enhanced peroxidase-like activity. Fe3O4@LNPs catalyzed the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2 to generate a blue color, was observable by the naked eye. Under the optimal conditions, Fe3O4@LNPs showed the ability of sensitive colorimetric detection of H2O2within a range of 5⁻100 μM and the limit of detection was 2 μM. The high catalytic activity of Fe3O4@LNPs allows its prospective use in a wide variety of applications, including clinical diagnosis, food safety, and environmental monitoring
