Research Progress of Antibiotic Pollution and Adsorption Materials in Aquatic environment

Zheng, Kun,Deng, ChengXun,Deng, Xu,Yu, ZhiMin Urban Science Institute 2019 도시과학 Vol.8 No.2

China is the great powers of use and production of antibiotics.The current process of sewage treatment plants can not effectively remove antibiotics in water. Chinese scholars have detected different kinds of antibiotics in major waters of the country, which have potential harm to human body. Among all kinds of antibiotic treatment technologies, adsorption removal technology has the advantages of simple operation, low cost and high removal efficiency. It is a widely concerned antibiotic removal technology. However, at present, few materials have been put into practical application, and more materials with low cost and high efficiency need to be found. Different adsorptive materials have different adsorptivity to different antibiotics. For different antibiotics, different adsorptive materials can be integrated in the future, and the theory can be extended to application.

An efficient method for the compressive behavior of FRP-confined concrete cylinders

Xinglang Fan,Zhimin Wu,Yufei Wu,Jianjun Zheng 사단법인 한국계산역학회 2013 Computers and Concrete, An International Journal Vol.12 No.4

Fiber reinforced polymer (FRP) jackets have been widely used as an effective tool for the strengthening and rehabilitation of concrete structures, especially damaged concrete columns. Therefore, a clear understanding of the compressive behavior of FRP-confined concrete is essential. The objective of this paper is to develop a simple efficient method for predicting the compressive strength, the axial strain at the peak stress, and the stress-strain relationship of FRP-confined concrete. In this method, a compressive strength model is established based on Jefferson’s failure surface. With the proposed strength model, the strength of FRP-confined concrete can be estimated more precisely. The axial strain at the peak stress is then evaluated using a damage-based formula. Finally, a modified stress-strain relationship is derived based on Lam and Teng’s model. The validity of the proposed compressive strength and strain models and the modified stress-strain relationship is verified with a wide range of experimental results collected from the research literature and obtained from the self-conducted test. It can be concluded that, as a competitive alternative, the proposed method can be used to predict the compressive behavior of FRP-confined concrete with reasonable accuracy.

CHEMICAL COMPONENTS AND ANTITUMOR EFFECTS OF THE PETROLEUM ETHER EXTRACTS OF Inonotus obliquus (Fr.)

Ji Feng,Zheng Weifa,liu liang,Peng yecheng,Zong Zhimin 한국버섯학회 2004 한국버섯학회 국제학술대회 Vol.3 No.-

Seismic rehabilitation of substandard RC columns with partially deteriorated concrete using CFRP composites

Dongxu Hou,Zhimin Wu,Jianjun Zheng,Yao Cui 사단법인 한국계산역학회 2015 Computers and Concrete, An International Journal Vol.15 No.1

Many existing reinforced concrete (RC) columns in structures tend to become substandard RC ones due to updated standards or environmental changes. These substandard columns may alter the behaviors of the whole structure and therefore are in urgent need of seismic retrofitting. Owing to their superior advantages, carbon fiber reinforced polymer (CFRP) composites are widely used to retrofit RC columns. The applications mainly focus on various substandard RC columns, but few deals with substandard columns with deteriorated concrete, especially damaged by earthquake. The purpose of this paper is to investigate the seismic behaviors of CFRP reinforced partially deteriorated RC columns and to evaluate the effect of CFRP sheets on them. Six flexure-dominant columns were tested under a constant axial load and transverse cyclic displacements. It is found that the seismic behaviors of partially deteriorated columns can be recovered by wrapping CFRP sheets on them. Numerical analysis is then conducted using finite element methods and verified with experimental results. The effects of the axial load ratio, the ratio of the thickness of CFRP sheet to the column diameter, and the slenderness ratio on the seismic behaviors of CFRP reinforced RC columns are evaluated. Finally, a method is proposed to determine the required thickness of CFRP sheet.

Evaluation of Clostridium autoethanogenum protein as a new protein source for broiler chickens in replacement of soybean meal

Chen Xing,Zheng Aijuan,Shoaib Ahmed Pirzado,Chen Zhimin,Qiu Kai,Wang Zedong,Chang Wenhuan,Cai Huiyi,Liu Guohua 아세아·태평양축산학회 2024 Animal Bioscience Vol.37 No.7

Objective: The object of this study was to investigate the effect of replacing soybean meal with Clostridium autoethanogenum protein (CAP) in broiler diets on growth performance, blood indicators, antioxidant capacity, and immune function. Methods: A total of 180 Arbor Acres broilers were randomly divided into three treatments, each treatment with six replicates and 10 broilers per replicate for a 42-day feeding trial. The control group (CON) was fed corn-soybean meal based diet. The CAP-1 and CAP-2 groups were considered to use CAP to replace 25% or 50% of soybean meal in the diet, respectively. The average daily gain and average daily feed intake of broilers at 1 to 21 d, 22 to 42 d, and 1 to 42 d were measured, and the feed conversion ratio was calculated. At the 42nd day of age, two broilers with similar weights and fasted for 12 h were selected in each replicate for blood collection from the brachial wing vein. The blood routine indicators, serum biochemical indicators, serum antioxidant capacity, and immunoglobulin content of broiler chickens were measured. Results: Replacement of soybean meal with 25% (CAP-1) and 50% (CAP-2) CAP significantly increased the average daily gain of 22 to 42 d and 1 to 42 d and decreased the average daily feed intake and feed conversion rate (p<0.05). The CAP-1 group, and CAP-2 group significantly increased hemoglobulin in the blood of broilers, while the CAP-2 group increased hematocrit content (p<0.05). Compared with the control group, the contents of superoxide dismutase and immunoglobulin A in serum of the CAP-2 group were significantly increased, while the contents of malondialdehyde in CAP group were significantly decreased (p<0.05). Conclusion: Replacing soybean meal with CAP led to significant improvements in the growth performance, antioxidant capacity, and immunoglobulin content of broilers. Objective: The object of this study was to investigate the effect of replacing soybean meal with <i>Clostridium autoethanogenum</i> protein (CAP) in broiler diets on growth performance, blood indicators, antioxidant capacity, and immune function.Methods: A total of 180 Arbor Acres broilers were randomly divided into three treatments, each treatment with six replicates and 10 broilers per replicate for a 42-day feeding trial. The control group (CON) was fed corn-soybean meal based diet. The CAP-1 and CAP-2 groups were considered to use CAP to replace 25% or 50% of soybean meal in the diet, respectively. The average daily gain and average daily feed intake of broilers at 1 to 21 d, 22 to 42 d, and 1 to 42 d were measured, and the feed conversion ratio was calculated. At the 42nd day of age, two broilers with similar weights and fasted for 12 h were selected in each replicate for blood collection from the brachial wing vein. The blood routine indicators, serum biochemical indicators, serum antioxidant capacity, and immunoglobulin content of broiler chickens were measured.Results: Replacement of soybean meal with 25% (CAP-1) and 50% (CAP-2) CAP significantly increased the average daily gain of 22 to 42 d and 1 to 42 d and decreased the average daily feed intake and feed conversion rate (p<0.05). The CAP-1 group, and CAP-2 group significantly increased hemoglobulin in the blood of broilers, while the CAP-2 group increased hematocrit content (p<0.05). Compared with the control group, the contents of superoxide dismutase and immunoglobulin A in serum of the CAP-2 group were significantly increased, while the contents of malondialdehyde in CAP group were significantly decreased (p<0.05).Conclusion: Replacing soybean meal with CAP led to significant improvements in the growth performance, antioxidant capacity, and immunoglobulin content of broilers.

Chemical components and antitumor effects of the petroleum ether extract of Inonotus obliquus (Fr.)

Ji Feng,Zheng Weifa,liu liang,Peng yecheng,Zong Zhimin 한국버섯학회 2004 한국버섯학회 국제학술대회 Vol.3 No.-

Ds9 was isolated encoding as OsHAP3H and its C-terminus was required for interaction with HAP2 and HAP5

Qikai Xing,Zhimin Zheng,Xiangui Zhou,Xujun Chen,Zejian Guo 한국식물학회 2015 Journal of Plant Biology Vol.58 No.1

Heading date is one of the most important agronomic traits in rice. Here, we analyzed an early flowering mutant ds9 under long day (LD) conditions and found that the early flowering phenotype was controlled by a single dominant gene. Mapping the Ds9 revealed that it was located near SSR marker RM5432 on chromosome 8, close to the known heading date-related DTH8/Ghd8 locus. Sequence analysis indicated that Ds9 was allelic to Ghd8, encoding the OsHAP3H subunit of CCAAT-box binding proteins (HAPs), and transformation of ds9 mutant with the OsHAP3H gene from wild type XS11 plants significantly increased the heading date under LD conditions. Yeast two hybrid and three hybrid assays revealed that the C-terminus of OsHAP3H is required for its interactions with OsHAP2 and OsHAP5. The data demonstrated that OsHAP3H plays a critical role as a repressor of photoperiodic flowering in rice.

Characterization of Rosa chinensis CBF Genes and the Function of RcCBF6 in Cold Tolerance

Jianbo Li,Guangshun Zheng,Shaofeng Li,Zhimin Tang,Jingshuang Sun,Xuebing Xin 한국식물학회 2020 Journal of Plant Biology Vol.63 No.4

As a class of AP2 family transcription factors, C-repeat binding factor (CBF) gene family plays an important role in resisting low-temperature stress and improving cold tolerance of plants. Rosa chinensis is an important horticultural and ornamental plant, but little is known about the molecular characteristics of CBF genes in R. chinensis. In our study, six RcCBFs members were identified at R. chinensis whole genome, including one member RcCBF1 on Chromosome 1 and other five members RcCBF2-6 on Chromosome 7. The analysis of cis-acting elements indicated that there were various cis-acting elements related to stress, development, hormone, and light. The expression profiles showed that most of RcCBFs were mainly expressed in root, and the expression levels of RcCBFs were significantly induced by low-temperature stress, especially RcCBF6. To verify the function of RcCBF6, we generated its overexpressing transgenic lines in Arabidopsis thaliana. The RcCBF6-overexpressing plants exhibited higher tolerance to cold stress as evidenced by a better growth and higher antioxidative enzyme activities than the wild-type plants. Furthermore, the expression levels of some cold-response genes were up-regulated in the transgenic plants, such as KIN1, RD29A, LTP3, and GOLS3. Our study contributes to a better understanding of RcCBF gene family and provides a foundation for the further functional research of RcCBFs.

Lag Group Consensus for the Second-order Nonlinear Multi-agent Systems via Adaptive Control Approach

Wanli Guo,Wenqiang Luo,Zhimin Zheng 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.8

Second-order nonlinear multi-agent system whose agents could be divided into multiple subgroups isconsidered in this paper. In order to avoid congestion, lag group consensus of the considered system is investigatedvia adaptive protocol. Without constraint on the topology of the system, sufficient conditions for the lag groupconsensus are proposed analytically. Finally, the efficiency of the proposed methodology is illustrated by numericalsimulation.

Effect of dielectric barrier discharge parameters on degradation efficiency of ethyl acetate

Deng, Xu,Lu, SiHeng,Zheng, Kun,Yu, ZhiMin Urban Science Institute 2019 도시과학 Vol.8 No.2

Using self-made coil dielectric barrier discharge reactor, the removal efficiency of ethyl acetate under simulated experimental parameters such as initial concentration of waste gas, total flow rate, relative humidity and voltage was investigated. The results show that the degradation rate of ethyl acetate increases with the increase of output voltage. When other conditions remain unchanged, the degradation rate decreases with the increase of initial concentration of ethyl acetate; with the increase of total flow rate, the degradation rate of ethyl acetate decreases; with the increase of relative humidity, the degradation rate first increases and then decreases, and when the relative humidity is 64%, the degradation efficiency is the highest.