Hysteretic Analysis and a Simplifi ed Model of Buckling Restrained Steel Plate Shear Walls

Lanhui Guo,Jian Hou,Zhiguo Li,Sumei Zhang 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.1

As a kind of new lateral resistance member, buckling restrained steel plate shear walls (BRSPSWs) possess good ductility and energy dissipation ability, which begin to be used in buildings. In the use of BRSPSWs, it is hard to simulate BRSPSWs in high-rise buildings using shell elements due to convergence problems. Hence, a simplifi ed analysis model for BRSPSWs is needed by engineers. In this paper, the fi nite element analysis of BRSPSWs under cyclic loads was done. The available experimental results are applied to validate the accuracy of fi nite element analysis results. Then the behavior of typical BRSPSW under cyclic loads is analyzed. Also, the infl uence of bolt distance, reinforced concrete (RC) panels’ thickness, height-to-thickness ratio and span-to-height ratio of steel plate on the hysteretic behavior of BRSPSWs is studied. The analytical results show that the bolt distance and RC panel thickness have obvious infl uence on the energy dissipation ability. At last, a simplifi ed model is proposed, which can be used to simulate the hysteretic behavior of BRSPSWs instead of shell element in high-rise buildings.

Analysis of Microbial Diversity in Tomato Paste Wastewater through PCR-DGGE

Shiyang Sun,Zhiguo Guo,Ruili Yang,Zhigang Sheng,Peng Cao 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.1

This study was conducted to evaluate the relationship between the flora and the changes in the microbial communities during tomato paste wastewater treatment. The bio-analytical techniques like Polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE), adenosine-triphosphate (ATP) analysis, and testing of mixed liquid and suspended solids (MLSS) were simultaneously conducted to analyze the dynamics of the microbial communities during tomato paste wastewater treatment process. The study suggests that the combined approaches of PCR-DGGE, ATP, and MLSS provided a simple and accurate method to evaluate the changes in microbial activity, microbial structure, and population size with the shift in contaminants in different treatment processes. The study also demonstrates that the structure and quantity of a microbial community are influenced by MLSS during the wastewater treatment process, which consequently determines the overall functionality of the system.

Microbial short-chain fatty acids: a bridge between dietary fibers and poultry gut health — A review

Ali Qasim,Ma Sen,La Shaokai,Guo Zhiguo,Liu Boshuai,Gao Zimin,Farooq Umar,Wang Zhichang,Zhu Xiaoyan,Cui Yalei,Li Defeng,Shi Yinghua 아세아·태평양축산학회 2022 Animal Bioscience Vol.35 No.10

The maintenance of poultry gut health is complex depending on the intricate balance among diet, the commensal microbiota, and the mucosa, including the gut epithelium and the superimposing mucus layer. Changes in microflora composition and abundance can confer beneficial or detrimental effects on fowl. Antibiotics have devastating impacts on altering the landscape of gut microbiota, which further leads to antibiotic resistance or spread the pathogenic populations. By eliciting the landscape of gut microbiota, strategies should be made to break down the regulatory signals of pathogenic bacteria. The optional strategy of conferring dietary fibers (DFs) can be used to counterbalance the gut microbiota. DFs are the non-starch carbohydrates indigestible by host endogenous enzymes but can be fermented by symbiotic microbiota to produce shortchain fatty acids (SCFAs). This is one of the primary modes through which the gut microbiota interacts and communicate with the host. The majority of SCFAs are produced in the large intestine (particularly in the caecum), where they are taken up by the enterocytes or transported through portal vein circulation into the bloodstream. Recent shreds of evidence have elucidated that SCFAs affect the gut and modulate the tissues and organs either by activating G-protein-coupled receptors or affecting epigenetic modifications in the genome through inducing histone acetylase activities and inhibiting histone deacetylases. Thus, in this way, SCFAs vastly influence poultry health by promoting energy regulation, mucosal integrity, immune homeostasis, and immune maturation. In this review article, we will focus on DFs, which directly interact with gut microbes and lead to the production of SCFAs. Further, we will discuss the current molecular mechanisms of how SCFAs are generated, transported, and modulated the pro-and anti-inflammatory immune responses against pathogens and host physiology and gut health. The maintenance of poultry gut health is complex depending on the intricate balance among diet, the commensal microbiota, and the mucosa, including the gut epithelium and the superimposing mucus layer. Changes in microflora composition and abundance can confer beneficial or detrimental effects on fowl. Antibiotics have devastating impacts on altering the landscape of gut microbiota, which further leads to antibiotic resistance or spread the pathogenic populations. By eliciting the landscape of gut microbiota, strategies should be made to break down the regulatory signals of pathogenic bacteria. The optional strategy of conferring dietary fibers (DFs) can be used to counterbalance the gut microbiota. DFs are the non-starch carbohydrates indigestible by host endogenous enzymes but can be fermented by symbiotic microbiota to produce shortchain fatty acids (SCFAs). This is one of the primary modes through which the gut microbiota interacts and communicate with the host. The majority of SCFAs are produced in the large intestine (particularly in the caecum), where they are taken up by the enterocytes or transported through portal vein circulation into the bloodstream. Recent shreds of evidence have elucidated that SCFAs affect the gut and modulate the tissues and organs either by activating G-protein-coupled receptors or affecting epigenetic modifications in the genome through inducing histone acetylase activities and inhibiting histone deacetylases. Thus, in this way, SCFAs vastly influence poultry health by promoting energy regulation, mucosal integrity, immune homeostasis, and immune maturation. In this review article, we will focus on DFs, which directly interact with gut microbes and lead to the production of SCFAs. Further, we will discuss the current molecular mechanisms of how SCFAs are generated, transported, and modulated the pro-and anti-inflammatory immune responses against pathogens and host physiology and gut health.

Optimization of Anthraquinone Dyes Decolorization Conditions with Response Surface Methodology by Aspergillus

( Yufeng Ge ),( Bin Wei ),( Siyu Wang ),( Zhiguo Guo ),( Xiaolin Xu ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.3

A large amount of dye wastewater poses a threat to environmental safety. Disperse blue, an anthraquinone dye that is widely used in textile dyes, is difficult to degrade in wastewater. In this work, one fungus was screened according to the decolorization rate of disperse blue. The fungus was identified and named Aspergillus XJ-2 on the basis of its morphological characteristics and 18s rDNA. Response surface method was used to optimize culture conditions for A. XJ-2. The optimum values of obtained responses were as follows: temperature, 35 °C; pH, 5.2; carbon-to nitrogen ratio, 30:5.5; and rotation ratio, 175 r·min-1. Under optimized conditions, the decolorization rate of A. XJ-2 was up to 94.8% in 48 h.

Clinicopathological Analysis and Treatment of Adult Patients with Inflammatory Myofibroblastic Tumor: A 15-Year Single- Center Study

Xin Liu,Chengcheng Gong,Jieyun Zhang,Wanjing Feng,Yanjing Guo,Youzhou Sang,Chunmeng Wang,Yong Chen,Jian Wang,Lin Yu,Xiaowei Zhang,Zhiguo Luo 대한암학회 2023 Cancer Research and Treatment Vol.55 No.3

Purpose Inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal malignancy that occurs primarily in children and adolescents. The clinical and pathological features of IMT in adult patients are not well understood.Materials and Methods We retrospectively searched for records of adult patients with IMT at Fudan University Shanghai Cancer Center from 2006 to 2021. Clinicopathological data, treatments, and outcomes were collected and analyzed.Results Thirty adult patients with IMT, mostly women (60.0%), were included. The median age of the patients was 38 (21-77). The most common primary site was abdominopelvic region (53.3%), followed by lungs (20.0%). Seven patients had an abdominal epithelioid inflammatory myofibroblast sarcoma (EIMS). The positivity rate of anaplastic lymphoma kinase (ALK) was 81.5% (22/27). Sixteen patients with advanced ALK-positive disease received crizotinib, with an objective response rate (ORR) of 81.3% and a disease control rate of 87.5%. The median progression-free survival was 20.8 months. EIMS was associated with more aggressive behavior; however, the prognosis was similar to that of non-EIMS patients after treatment with an ALK inhibitor. At a median follow-up time of 30 months (95% confidence interval [CI], 13.6 to 46.4), the 5-year overall survival was 77% (95% CI, 66 to 88) in all patients.Conclusion Adult IMTs appeared more aggressive, with a higher incidence of recurrence and metastases, and patients with EIMS had more aggressive cases. Treatment with ALK inhibitors resulted in a high ORR and a durable response, which suggested that ALK inhibitors could be used as a first-line treatment option in adult patients with ALK-positive advanced IMT.

Insect-Proof Nets Affect Paddy Field Microclimate Parameters and Grain Quality of Different Japonica Rice Varieties

Zhi Guo,Hongjiang Liu,Jianchu Zheng,Liugen Chen,Haiyan Yuan 한국작물학회 2015 Journal of crop science and biotechnology Vol.18 No.2

Insect-proof nets (IPN) are widely used to protect crops from invertebrate pests. The effects of IPN on the main microclimate parameters of paddy fields, as well as grain quality, were investigated for three japonica Oryza sativa L. varieties (Nanjing 44, Nanjing 45, and Suxiangjing 3) that are widely grown in China. The environmental temperature of IPN-treated fields increased slightly, whereas the maximum value of photosynthetically active radiation (PAR), daily cumulative PAR, and daily cumulative global radiation all decreased. However, the ratio of PAR to global radiation increased significantly, from 15.08 to 45.48%. Compared to the no insect-proof net (NIPN) treatment, the head rice percentage increased significantly for all three varieties; however, the chalky grain percentage, area and degree, and the amylose content all decreased significantly. The response of gel consistency, protein concentration, and the main parameters of the rapid visco analyzer (RVA) profile of rice starch to IPN treatment differed between varieties. The peak viscosity and breakdown were increased compared to the NIPN treatment, whereas the final viscosity and setback were decreased. However, no significant differences were found between the IPN and NIPN treatments. Furthermore, statistical analysis indicated no interaction between rice planting pattern (RPP) and rice variety (RV) for the rice grain quality parameters. These results suggest that IPN treatment improved rice grain quality for all japonica rice varieties studied, possibly due to the slight increase in environmental temperature and increased ratio of PAR to global radiation in IPN treated paddy fields.

作为政治秩序原理的正义与仁义 : 亚里士多德与孟子之间的一种互诠

陈治国 ( Chen¸ Zhi-guo ) 한국유교학회 2014 유교사상문화연구 Vol.56 No.-

“正义”和“仁义”在亚里士多德和孟子那里分别构成了优秀政治社会秩序的基本原理, 同时也被看作政治共同体成员所应培养的与他人相关的总体德性或伦理德性整体。这在某种程度上表明, 两位哲学家都把城邦政治的首要功能限定于主要促进每一个体伦理德性的实现或发展以及优秀公民人格的培养, 因为这更多地涉及一个人类存在者的本性和福祉。不过, 在伦理德性的形成路径上, 亚里士多德主张要由伦理德性公民的、政治的向度推进到人性向度、道德向度, 孟子则更倾向于一种相反的培养程序。并且, 二者虽然都为哲学家或者圣贤在正义城邦或仁义之治发展中的恰当角色提供了两种选项, 即政治顾问和伦理教师, 但是, 真正支撑着这两种角色的深层理由并不完全一致。 “Justice” in Aristotle and “benevolence and appropriateness” (renyi) in Mencius are individually conceived as the primary principle of an excellent social-political order in their ethical and political thought. In a sense, this shows that, both philosophers mainly define primary function of the politics of city or state as promoting the actualization or development of personal ethical virtue and the cultivation of excellent citizens. At the same time, Each of these two concepts is regarded as the whole of virtues with relation to others or the totally ethical virtues which should be cultivated by all the members of one political community. As the shaping path of ethical virtue is concerned, Aristotle holds that, we should attain the good character by advancing to human and moral dimension from civil and political one, but Mencius seems to give the priority to the former than the latter. Besides, both thinkers provide two roles, which are political consultant and ethical teacher, for philosophers or sages in the development of just city or government of benevolence and appropriateness, however, profound reasons that sustain these roles are not very consistent.