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1. Biochar increases 15N fertilizer retention and indigenous soil N uptake in a cotton-barley rotation system

Author:
Wang, Zhen,   et al.   ; Wang, Zhi; Luo, Ying; Zhan, Ya-nan; Meng, Ya-li; Zhou, Zhi-guo;     Show all 6 Authors
Source:
Geoderma 2020 v.357
ISSN:
0016-7061
Subject:
Gossypium hirsutum; Hordeum vulgare; barley; biochar; biomass production; cotton; fertilizer rates; nitrogen; nitrogen fertilizers; roots; soil properties; stable isotopes; tracer techniques; urea nitrogen
Abstract:
... Biochar amendments can modify fertilizer nitrogen (N) availability in soil and crop N uptake. However, how biochar addition affects crop N uptake and fertilizer N recovery under various N levels is not yet well understood. To address this question, we conducted a two-season [cotton (Gossypium hirsutum L.)-barley (Hordeum vulgare L.) rotation] pot experiment that included four N fertilizer rates (0 ...
DOI:
10.1016/j.geoderma.2019.113944

2. Impact of government subsidies on pricing strategies in reverse supply chains of waste electrical and electronic equipment

Author:
Wang, Zhen,   et al.   ; Huo, Jiazhen; Duan, Yongrui;     Show all 3 Authors
Source:
Waste management 2019 v.95 pp. 440-449
ISSN:
0956-053X
Subject:
electronic wastes; financial economics; prices; recycling; subsidies; supply chain
Abstract:
... Many governments use subsidies to encourage the recycling of waste electrical and electronic equipment. In order to assist policymakers in maximizing the benefit of these incentives, this paper investigates strategies for the allocation strategy of government subsidies among the parties in the reverse supply chain of e-waste consisting of one collector, one remanufacturer and two retailers. The op ...
DOI:
10.1016/j.wasman.2019.06.006

3. Backward and forward multilevel indicators for identifying key sectors of China’s intersectoral CO2 transfer network

Author:
Wang, Zhen,   et al.   ; Wei, Liyuan; Zhang, Xiaoling;     Show all 3 Authors
Source:
Environmental science and pollution research international 2019 v.26 no.10 pp. 9661-9671
ISSN:
0944-1344
Subject:
carbon; carbon dioxide; coal; economic development; electric power; electrical equipment; emissions; energy; input output analysis; issues and policy; metals; mining; models; network theory; pressing; steam; supply chain; telecommunications; China
Abstract:
... Many countries face a dilemma of economic growth and carbon emission mitigation, which is highly associated with energy consumption. In order to initiate effective policies for controlling carbon emissions, it is important to identify the key sectors in the value chain, thus proposing corresponding measures. To date, however, energy and carbon emissions have been studied mainly from a production o ...
DOI:
10.1007/s11356-019-04350-8

4. Life-cycle CO2 Emissions and Their Driving Factors in Construction Sector in China

Author:
Wang, Zhen,   et al.   ; Cui, Can; Bin, Guoshu;     Show all 3 Authors
Source:
Chinese geographical science 2019 v.29 no.2 pp. 293-305
ISSN:
1002-0063
Subject:
carbon; carbon dioxide; cement; construction materials; developmental stages; emissions factor; energy; environmentally preferable purchasing; greenhouse gas emissions; industry; issues and policy; prices; raw materials; sustainable technology; taxes; urbanization; China
Abstract:
... As the construction sector is a major energy consumer and thus a significant contributor of CO₂ emissions in China, it is important to consider carbon reduction in this industry. This study analyzed six life-cycle stages and calculated the life-cycle CO₂ emissions of the construction sector in 30 Chinese provincial jurisdictions to understand the disparity among them. Results show that building ma ...
DOI:
10.1007/s11769-019-1029-z

5. How do urbanization and consumption patterns affect carbon emissions in China? A decomposition analysis

Author:
Wang, Zhen,   et al.   ; Cui, Can; Peng, Sha;     Show all 3 Authors
Source:
Journal of cleaner production 2019 v.211 pp. 1201-1208
ISSN:
0959-6526
Subject:
carbon; econometrics; electricity; emissions; environmentally preferable purchasing; input output analysis; transportation; urbanization; China
Abstract:
... Increasingly urbanized populations and corresponding consumption changes cause emissions to rise. However, their contributions in quantity have been less studied compared to the empirical econometrical tests. Here, we use a factor-reversible structural decomposition method featuring input–output analysis to explore the impacts of urbanization and changes in consumption patterns on incremental hous ...
DOI:
10.1016/j.jclepro.2018.11.272

6. CO2 emissions, renewables, environmental patents, and economic growth - Evidence from BRIICS

Author:
Wang, Zhen,   et al.   ; Cheng, Cheng; Ren, Xiaohang;     Show all 3 Authors
Source:
The Science of the total environment 2019
ISSN:
0048-9697
Subject:
carbon; carbon dioxide; credit; economic development; foreign direct investment; greenhouse gas emissions; issues and policy; patents; regression analysis; renewable energy sources
Abstract:
... The study explores the impacts of renewable energy, environmental patents, economic growth and other variables on the CO2 emission per capita from 2000 to 2013 for the BRIICS countries. This study applies panel OLS methods and the panel quantile regression method. The result shows that the effects of the determinate variables are heterogeneous across quantiles. Specifically, renewable energy suppl ...
DOI:
10.1016/j.scitotenv.2019.02.063

7. Fluorescein and its derivatives: New coreactants for luminol chemiluminescence reaction and its application for sensitive detection of cobalt ion

Author:
Wang, Zhen,   et al.   ; Zhou, Yang; Du, Jianxiu;     Show all 3 Authors
Source:
Talanta 2019 v.191 pp. 422-427
ISSN:
0039-9140
Subject:
chemiluminescence; cobalt; detection limit; fluorescein; silica gel
Abstract:
... Fluorescein and its derivatives, including 4′,5′–dibromofluorescein, 2′,7′–dichlorofluorescein and 2′,4′,5′,7′–tetrabromofluorescein can be employed as efficient coreactants for luminol reaction. Under an alkaline condition they reacted with luminol to produce measureable chemiluminescence (CL) in the absence of any extra–oxidant. Cobalt ion (Co²⁺) significantly enhanced the CL emission of the rea ...
DOI:
10.1016/j.talanta.2018.09.007

8. Polyelectrolyte Chain Structure and Solution Phase Behavior

Author:
Wang, Zhen-Gang,   et al.   ; Shen, Kevin;     Show all 2 Author
Source:
Macromolecules 2018 v.51 no.5 pp. 1706-1717
ISSN:
1520-5835
Subject:
electrolytes; electrostatic interactions; mathematical theory; physical phases; salts; separation; temperature; thermodynamics
Abstract:
... Using a recently developed renormalized Gaussian fluctuation (RGF) field theory that self-consistently accounts for the concentration-dependent coupling between chain structure and electrostatic correlations, we study the phase behavior of polyelectrolyte solutions, with a focus on the effects of added salts and chain structure. For solutions of a single polyelectrolyte species plus salt, the RGF ...
DOI:
10.1021/acs.macromol.7b02685

9. Blue Light-Triggered Chemical Reactions Underlie Phosphate Deficiency-Induced Inhibition of Root Elongation of Arabidopsis Seedlings Grown in Petri Dishes

Author:
Wang, Zhen,   et al.   ; Zheng, Zai; Wang, Xiaoyue; Liu, Dong;     Show all 4 Authors
Source:
Molecular plant 2019 v.12 no.11 pp. 1515-1523
ISSN:
1674-2052
Subject:
Arabidopsis; apoplast; blue light; chemical reactions; growth retardation; hydroxyl radicals; iron; lighting; models; phenotype; phosphates; root growth; root hairs; seedlings
Abstract:
... To tolerate phosphate (Pi) deficiency in the environment, plants alter their developmental and metabolic programs. In the past two decades, researchers have extensively used Petri dish-grown seedlings of the model plant Arabidopsis thaliana to study the molecular mechanisms underlying root developmental responses to Pi deficiency. A typical developmental response of the Petri dish-grown Arabidopsi ...
DOI:
10.1016/j.molp.2019.08.001

10. Construction of a novel Escherichia coli expression system: relocation of lpxA from chromosome to a constitutive expression vector

Author:
Wang, Zhen,   et al.   ; Zhao, Lei; Hu, Xiaoqing; Li, Ye; Wang, Xiaoyuan;     Show all 5 Authors
Source:
Applied microbiology and biotechnology 2019 v.103 no.17 pp. 7177-7189
ISSN:
0175-7598
Subject:
DNA fragmentation; Escherichia coli; antibiotic resistance; antibiotics; bacteria; biosynthesis; chromosomes; enzymes; gene editing; gene expression; genes; genetic vectors; mutants; plasmids; threonine
Abstract:
... The selective marker in the plasmid-based expression system is usually a gene that encodes an antibiotic-resistant protein; therefore, the antibiotic has to add to maintain the plasmid when growing the bacteria. This antibiotic addition would lead to increase of production cost and the environment contamination. In this study, a novel Escherichia coli expression system, the lpxA deletion mutant ha ...
DOI:
10.1007/s00253-019-10013-y

11. Cleaner heating choices in northern rural China: Household factors and the dual substitution policy

Author:
Wang, Zhen,   et al.   ; Li, Cai; Cui, Can; Liu, Hui; Cai, Bofeng;     Show all 5 Authors
Source:
Journal of environmental management 2019
ISSN:
0301-4797
Subject:
coal; education; energy; energy costs; environmental factors; heat; households; income; infrastructure; issues and policy; surveys; villages; winter; China
Abstract:
... Household heating is a major contributor to frequent winter haze in northern China. Transition to cleaner household heating is associated with multiple benefits including improved environmental conditions and health of local residents. This study presents an analysis of data from an indoor survey covering 1030 households in 136 villages of Hebi City in the winter of 2018. The main purpose of this ...
DOI:
10.1016/j.jenvman.2019.109433

12. The controllable growth of PtCuRh rhombic dodecahedral nanoframes as efficient catalysts for alcohol electrochemical oxidation

Author:
Wang, Zhen,   et al.   ; Huang, Lei; Tian, Zhi Qun; Shen, Pei Kang;     Show all 4 Authors
Source:
Journal of materials chemistry A 2019 v.7 no.31 pp. 18619-18625
ISSN:
2050-7496
Subject:
catalysts; catalytic activity; cetyltrimethylammonium bromide; copper; dendrites; electrochemistry; energy; ethanol; methanol; oxidation; platinum; rhodium; synergism; temperature
Abstract:
... Platinum-based catalysts with heterogeneous structures, such as three-dimensional (3D) nanoframes and highly branched architectures, have broad application prospects due to their fully accessible surfaces and high atom utilization. However, the fragile frames and dendrites with high energy easily suffer from structural collapse during catalytic processes. Hence, we synthesized Rh-strengthened PtCu ...
DOI:
10.1039/c9ta06119c

13. Preparation of cellulose-base amphoteric flocculant and its application in the treatment of wastewater

Author:
Wang, Zhen,   et al.   ; Huang, Wenxiu; Yang, Guihua; Liu, Yu; Liu, Sai;     Show all 5 Authors
Source:
Carbohydrate polymers 2019 v.215 pp. 179-188
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; acrylic acid; calcium chloride; cellulose; decolorization; flocculants; flocculation; kaolin; ozonation; pH; polymerization; pulp and paper mills; quaternary ammonium compounds; sodium hydroxide; temperature; turbidity; urea; wastewater treatment
Abstract:
... An amphoteric flocculant, MCC(pAA-co-pDMC) was synthesized through an environmental friendly process. Methacryloxyethyltrimethyl ammonium chloride (DMC) and acrylic acid (AA) were grafted onto the skeleton of microcrystalline cellulose (MCC) in NaOH/urea homogeneous system. Orthogonal tests were carried out to achieve the optimal conditions of the polymerization process. Influential factors, which ...
DOI:
10.1016/j.carbpol.2019.03.097

14. Food Polyelectrolytes Compress the Colonic Mucus Hydrogel by a Donnan Mechanism

Author:
Wang, Zhen-Gang,   et al.   ; Preska Steinberg, Asher; Ismagilov, Rustem F.;     Show all 3 Authors
Source:
Biomacromolecules 2019 v.20 no.7 pp. 2675-2683
ISSN:
1526-4602
Subject:
animal experimentation; biofilm; carboxymethylcellulose; crosslinking; electrolytes; host-pathogen relationships; hydrogels; inflammation; mice; models; mucus; obesity; physics; polymers; processed foods
Abstract:
... Systems consisting of a polyelectrolyte solution in contact with a cross-linked polyelectrolyte network are ubiquitous (e.g., biofilms, drug-delivering hydrogels, and mammalian extracellular matrices), yet the underlying physics governing these interactions is not well understood. Here, we find that carboxymethyl cellulose, a polyelectrolyte commonly found in processed foods and associated with in ...
DOI:
10.1021/acs.biomac.9b00442

15. Insights into the molecular structure of immobilized protein A ligands on dextran-coated nanoparticles: Comprehensive spectroscopic investigation

Author:
Wang, Zhen,   et al.   ; Shen, Yi; Shi, Qing-Hong; Sun, Yan;     Show all 4 Authors
Source:
Biochemical engineering journal 2019 v.146 pp. 20-30
ISSN:
1369-703X
Subject:
buffer index; buffers; calorimetry; chemical structure; chromatography; dextran; electrostatic interactions; humans; immunoglobulin G; ligands; magnetism; nanoparticles; pH; polymerization; spectral analysis
Abstract:
... Ligand immobilization is indeed key fundamental for the development of high-capacity protein A chromatographic material. In this work, mono- and tetra-mers of Z domain from protein A were immobilized onto magnetic nanoparticle (NP) coated with carboxymethyl dextran (CMD), Fe3O4@CMD NP, via oriented coupling. Spectral results of Fe3O4@CMD-oZ NP with oriented Z domain showed that the molecular struc ...
DOI:
10.1016/j.bej.2019.03.005

16. Heterogeneous impacts of renewable energy and environmental patents on CO2 emission - Evidence from the BRIICS

Author:
Wang, Zhen,   et al.   ; Cheng, Cheng; Ren, Xiaohang; Yan, Cheng;     Show all 4 Authors
Source:
The Science of the total environment 2019 v.668 pp. 1328-1338
ISSN:
0048-9697
Subject:
carbon; carbon dioxide; credit; economic development; foreign direct investment; greenhouse gas emissions; issues and policy; patents; regression analysis; renewable energy sources
Abstract:
... The study explores the impacts of renewable energy, environmental patents, economic growth and other variables on the CO2 emission per capita from 2000 to 2013 for the BRIICS countries. Using both the panel OLS methods and panel quantile regression method, we find that the effects of the determinant variables are heterogeneous across quantiles. Specifically, renewable energy supply reduces CO2 emi ...
DOI:
10.1016/j.scitotenv.2019.02.063

17. Co-metabolic degradation of naphthalene and pyrene by acclimated strain and competitive inhibition kinetics

Author:
Wang, Zhen,   et al.   ; Wang, Wenjing; Li, Yalong; Yang, Qi;     Show all 4 Authors
Source:
Journal of environmental science and health 2019 v.54 no.6 pp. 505-513
ISSN:
1532-4109
Subject:
Ochrobactrum; coal tar; dissociation; enzyme kinetics; models; naphthalene; pH; polluted soils; temperature
Abstract:
... A dominant strain named Ochrobactrum sp. was isolated from soils contaminated with coal tar. The batch experiments were carried out to study the co-metabolic degradation of pyrene by Ochrobactrum MB-2 with naphthalene as the main substrate and the effects of several significant parameters such as naphthalene concentration, pH and temperature on removal efficiency were explored. The results showed ...
DOI:
10.1080/03601234.2019.1586033

18. Development and optimization of a supercritical fluid chromatography tandem mass spectrometry method for the high‐throughput determination of nimodipine in beagle plasma

Author:
Wang, Zhen,   et al.   ; Wang, Weiping; Li, Pengyan; Wu, Fengying; Zhang, Tianhong;     Show all 5 Authors
Source:
Journal of separation science 2019 v.42 no.12 pp. 2179-2186
ISSN:
1615-9306
Subject:
Beagle; acetone; chemical species; dogs; ionization; monitoring; oral administration; pharmacokinetics; quality control; spectrometers; supercritical fluid chromatography; tandem mass spectrometry
Abstract:
... A simple, sensitive, and efficient supercritical fluid chromatography with tandem mass spectrometry method was established for the determination of nimodipine in beagle plasma. One‐step protein precipitation with acetone was used to extract the analytes from the plasma. Nitrendipine was used as the internal standard. The chromatographic separation was achieved on an ACQUITY UPC²™ BEH 2‐EP column, ...
DOI:
10.1002/jssc.201900134

19. Thermal extremes can intensify chemical toxicity to freshwater organisms and hence exacerbate their impact to the biological community

Author:
Wang, Zhen,   et al.   ; Lui, Gilbert C.S.; Burton, G.Allen; Leung, Kenneth M.Y.;     Show all 4 Authors
Source:
Chemosphere 2019 v.224 pp. 256-264
ISSN:
0045-6535
Subject:
acute toxicity; chemical pollutants; climate change; ecotoxicology; ectothermy; freshwater; freshwater ecosystems; guidelines; lethal concentration 50; mathematical models; median effective concentration; meta-analysis; prediction; risk; water quality; water temperature
Abstract:
... Temperature in freshwater ecosystems fluctuates daily, seasonally and yearly. Climate change further induces temperature variations. In this study, we hypothesise that water temperatures, in particular thermal extremes, can significantly influence chemical toxicity to ectothermic organisms. Although temperature-dependent chemical toxicity (TDCT) is a classic research area in ecotoxicology, a unifi ...
DOI:
10.1016/j.chemosphere.2019.02.103

20. Nonlinear Rheological Behaviors in Polymer Melts after Step Shear

Author:
Wang, Zhen-Gang,   et al.   ; Ruan, Yongjin; Lu, Yuyuan; An, Lijia;     Show all 4 Authors
Source:
Macromolecules 2019 v.52 no.11 pp. 4103-4110
ISSN:
1520-5835
Subject:
melting; molecular dynamics; polymers; rheological properties; stress relaxation
Abstract:
... Using molecular dynamics simulation, we investigate the evolution of chain conformation, stress relaxation, and fracture for a polymer melt between two walls after step shear. We find that the characteristic overlap time for the reduced relaxation moduli and the time that the stretched primitive chain retracts to its equilibrium length are both much longer than the Rouse time. Importantly, we obse ...
DOI:
10.1021/acs.macromol.9b00392