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7 results on '"Zhihai Ding"'

1. Remarkable average thermoelectric performance of the highly oriented Bi(Te, Se)-based thin films and devices

Author

Zhiliang Li, Xiaoqi Yang, Zhi Gao, Jingxuan Wang, Yuli Xue, Jianglong Wang, Qian Cao, Zhihai Ding, and Shufang Wang

Subjects
Bismuth telluride, Oriented thin film, Thermoelectric device, Average power factor, Output power density, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Bi(Te, Se)-based compounds have attracted lots of attention for nearly two centuries as one of the most successful commercial thermoelectric (TE) materials due to their high performance at near room temperature. Compared with 3D bulks, 2D thin films are more compatible with modern semiconductor technology and have unique advantages in the construction of micro- and nano-devices. For device applications, high average TE performance over the entire operating temperature range is critical. Herein, highly c-axis-oriented N-type Bi(Te, Se) epitaxial thin films have been successfully prepared using the pulsed laser deposition technology by adjusting the deposition temperature. The film deposited at ∼260 °C demonstrate a remarkable average power factor (PFave) of ∼24.4 μW·cm−1·K−2 over the temperature range of 305–470 K, higher than most of the state-of-the-art Bi(Te, Se)-based films. Moreover, the estimated average zT value of the film is as high as ∼0.81. We then constructed thin-film TE devices by using the above oriented Bi(Te, Se) films, and the maximum output power density of the device can reach up to ∼30.1 W/m2 under the temperature difference of 40 K. Predictably, the outstanding average TE performance of the highly oriented Bi(Te, Se) thin films will have an excellent panorama of applications in semiconductor cooling and power generation.

Published
2024
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2. Evaluation of three wheat (Triticum aestivum L.) cultivars as sensitive Cd biomarkers during the seedling stage

Author

Chuntao He, Zhihai Ding, Samavia Mubeen, Xuying Guo, Huiling Fu, and Guorong Xin

Subjects
Cadmium, Triticum aestivum L., Root morphology, Physiological response, Cd sensitivity, Medicine, Biology (General), QH301-705.5
Abstract

Sensitive seedling crops have been developed to monitor Cadmium (Cd) contamination in agricultural soil. In the present study, 18 parameters involving growth conditions and physiological performances were assessed to evaluate Cd-responses of three wheat (Triticum aestivum L.) cultivars, Xihan1 (XH), Longzhong1 (LZ) and Dingfeng16 (DF). Principle component analysis illustrated that Factor 1, representing growth performance, soluble sugar content and catalase activity, responded to the Cd treatments in a dose dependent manner, while Factor 2 represented by chlorophyll content and germinating root growth was mainly dependent on cultivar differences. Higher inhibition rates were observed in growth performance than in physiological responses, with the highest inhibition rates of shoot biomasses (39.6%), root length (58.7%), root tip number (57.8%) and bifurcation number (83.2%), even under the lowest Cd treatment (2.5 mg·L−1). According to the Cd toxicity sensitivity evaluation, DF exerted highest tolerance to Cd stress in root growth while LZ was more sensitive to Cd stress, suggesting LZ as an ideal Cd contaminant biomarker. This study will provide novel insight into the cultivar-dependent response during using wheat seedlings as Cd biomarkers.

Published
2020
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4. Evaluation of three wheat (

Author

Chuntao, He, Zhihai, Ding, Samavia, Mubeen, Xuying, Guo, Huiling, Fu, and Guorong, Xin

Subjects
Physiological response, food and beverages, Plant Science, Agricultural Science, Cd sensitivity, Environmental Contamination and Remediation, Triticum aestivum L, Root morphology, Cadmium
Abstract

Sensitive seedling crops have been developed to monitor Cadmium (Cd) contamination in agricultural soil. In the present study, 18 parameters involving growth conditions and physiological performances were assessed to evaluate Cd-responses of three wheat (Triticum aestivum L.) cultivars, Xihan1 (XH), Longzhong1 (LZ) and Dingfeng16 (DF). Principle component analysis illustrated that Factor 1, representing growth performance, soluble sugar content and catalase activity, responded to the Cd treatments in a dose dependent manner, while Factor 2 represented by chlorophyll content and germinating root growth was mainly dependent on cultivar differences. Higher inhibition rates were observed in growth performance than in physiological responses, with the highest inhibition rates of shoot biomasses (39.6%), root length (58.7%), root tip number (57.8%) and bifurcation number (83.2%), even under the lowest Cd treatment (2.5 mg·L−1). According to the Cd toxicity sensitivity evaluation, DF exerted highest tolerance to Cd stress in root growth while LZ was more sensitive to Cd stress, suggesting LZ as an ideal Cd contaminant biomarker. This study will provide novel insight into the cultivar-dependent response during using wheat seedlings as Cd biomarkers.

Published
2019

5. Study on deep dewatering and resource utilization of sludge in municipal sewage treatment plant

Author

Yan Shi, Zhihai Ding, Jiamei Zhong, Xinying Huang, and Fei Zhang

Subjects
chemistry.chemical_classification, Compost, Municipal sewage, engineering.material, Pulp and paper industry, Dewatering, Nutrient, chemistry, engineering, Environmental science, Organic matter, Sewage treatment, Water content, Sludge
Abstract

In this study, the sludge of three municipal sewage treatment plants in Foshan City, Guangdong Province, China, was dewatered and recycled. The experimental results shown that after deep dewatering with different chemical conditioning reagents, the moisture content of municipal sewage sludge was decreased greatly, from about 97% to about 55%. After dewatering, the organic matter content of sludge was maintained at a high level which is beneficial to the composting treatment of the sludge. The organic matter content of sludge in Foshan No. 1 Sewage Treatment Plant and No. 2 Sewage Treatment Plant was more than 30%, while it was between 15% and 20% in Foshan No. 3 Sewage Treatment Plant. Sludge from all three sewage treatment plants neeed to add a small amount of nutrients to compost. After 14 days of the aerobic composting, the moisture content of the sewage sludge could be reduced to less than 50%, and all the index met the requirements of the agricultural standard.

Published
2019

6. Evaluation of three wheat (Triticum aestivum L.) cultivars as sensitive Cd biomarkers during the seedling stage

Author

Xuying Guo, Guorong Xin, Samavia Mubeen, Huiling Fu, Zhihai Ding, and Chun-Tao He

Subjects
0106 biological sciences, lcsh:Medicine, chemistry.chemical_element, 010501 environmental sciences, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Physiological response, Cultivar, Sugar, Triticum aestivum L, 0105 earth and related environmental sciences, Cadmium, biology, General Neuroscience, lcsh:R, food and beverages, General Medicine, Contamination, Cd sensitivity, biology.organism_classification, Root morphology, Horticulture, chemistry, Catalase, Seedling, Germination, Shoot, biology.protein, General Agricultural and Biological Sciences, 010606 plant biology & botany
Abstract

Sensitive seedling crops have been developed to monitor Cadmium (Cd) contamination in agricultural soil. In the present study, 18 parameters involving growth conditions and physiological performances were assessed to evaluate Cd-responses of three wheat (Triticum aestivum L.) cultivars, Xihan1 (XH), Longzhong1 (LZ) and Dingfeng16 (DF). Principle component analysis illustrated that Factor 1, representing growth performance, soluble sugar content and catalase activity, responded to the Cd treatments in a dose dependent manner, while Factor 2 represented by chlorophyll content and germinating root growth was mainly dependent on cultivar differences. Higher inhibition rates were observed in growth performance than in physiological responses, with the highest inhibition rates of shoot biomasses (39.6%), root length (58.7%), root tip number (57.8%) and bifurcation number (83.2%), even under the lowest Cd treatment (2.5 mg·L−1). According to the Cd toxicity sensitivity evaluation, DF exerted highest tolerance to Cd stress in root growth while LZ was more sensitive to Cd stress, suggesting LZ as an ideal Cd contaminant biomarker. This study will provide novel insight into the cultivar-dependent response during using wheat seedlings as Cd biomarkers.

Published
2020

7. Study on Deep Dewatering and Resource Utilization of Sludge in Municipal Sewage Treatment Plant.

Author

Fei Zhang, Xinying Huang, Yan Shi, Jiamei Zhong, and Zhihai Ding

Subjects
SEWAGE disposal plants, SLUDGE management, SLUDGE conditioning, SLUDGE composting, SEWAGE sludge, CHEMICAL reagents
Abstract

In this study, the sludge of three municipal sewage treatment plants in Foshan City, Guangdong Province, China, was dewatered and recycled. The experimental results shown that after deep dewatering with different chemical conditioning reagents, the moisture content of municipal sewage sludge was decreased greatly, from about 97% to about 55%. After dewatering, the organic matter content of sludge was maintained at a high level which is beneficial to the composting treatment of the sludge. The organic matter content of sludge in Foshan No. 1 Sewage Treatment Plant and No. 2 Sewage Treatment Plant was more than 30%, while it was between 15% and 20% in Foshan No. 3 Sewage Treatment Plant. Sludge from all three sewage treatment plants neeed to add a small amount of nutrients to compost. After 14 days of the aerobic composting, the moisture content of the sewage sludge could be reduced to less than 50%, and all the index met the requirements of the agricultural standard. [ABSTRACT FROM AUTHOR]

Published
2019
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