U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Author "Hao Chen" Remove constraint Author: "Hao Chen"
Start Over

Search

1,556  Search Results

« Previous | 1 - 20 of 1,556 |
Number of results to display per page

Search Results

1. Will China's provincial per capita energy consumption converge to a common level over 1990–2017? Evidence from a club convergence approach

Author:
Hao Chen,   et al.   ; Weijun He;     Show all 2 Author
Source:
Energy 2022 v.249 pp. 123624
ISSN:
0360-5442
Subject:
energy; energy conservation; energy policy; resource allocation; China
Abstract:
... Per capita energy consumption is related to the equity of energy resource allocation, and its wide regional variations probably aggravate the unbalanced regional development. However, whether the gaps in China's provincial per capita energy consumption are reduced over the past decades has not yet been thoroughly investigated, and the convergence of provincial per capita energy consumption is cruc ...
DOI:
10.1016/j.energy.2022.123624

2. New multivariate tests for assessing covariate balance in matched observational studies

Author:
Hao Chen,   et al.   ; Dylan S. Small;     Show all 2 Author
Source:
Biometrics 2022 v.78 no.1 pp. 202-213
ISSN:
0006-341X
Subject:
balance studies; biometry; blood; data collection; exhibitions; lead; observational studies; smoke; testing
Abstract:
... We propose new tests for assessing whether covariates in a treatment group and matched control group are balanced in observational studies. The tests exhibit high power under a wide range of multivariate alternatives, some of which existing tests have little power for. The asymptotic permutation null distributions of the proposed tests are studied and the P‐values calculated through the asymptotic ...
DOI:
10.1111/biom.13395

3. Comparative tribological performance and erosion resistance of epoxy resin composite coatings reinforced with aramid fiber and carbon fiber

Author:
Hao Chen,   et al.   ; Wenwen Jing; Fan Zhang;     Show all 3 Authors
Source:
Colloids and surfaces 2022 v.648 pp. 129354
ISSN:
0927-7757
Subject:
adhesion; carbon fibers; chitosan; epoxides; tensile strength
Abstract:
... In this work, chitosan modified aramid fiber (MAF) and carbon fiber (MCF) were prepared by simple self-assembly of chitosan on the fibers. The interface adhesion strength between fiber and epoxy resin was greatly improved, due to the active groups on the surface of chitosan. Compared with pristine composites, MAF/EP and MCF/EP showed impressive improvements of 15.61% and 18.06% in interfacial stre ...
DOI:
10.1016/j.colsurfa.2022.129354

4. Towards carbon neutrality with Chinese characteristics: From an integrated perspective of economic growth-equity-environment

Author:
Hao Chen,   et al.   ; Shaozhou Qi; Jihong Zhang;     Show all 3 Authors
Source:
Applied energy 2022 v.324 pp. 119719
ISSN:
0306-2619
Subject:
carbon; climate; economic structure; employment; energy; evolution; models; social welfare; China
Abstract:
... With the increasing climate warming, reducing carbon emissions has gradually become a consensus around the world. However, the process of carbon emission reduction will inevitably lead to the transformation of economic structure, industrial structure and energy structure, which will bring huge changes in economic output, employment and other aspects, thus affecting the overall social welfare and e ...
DOI:
10.1016/j.apenergy.2022.119719

5. Challenges in characterization of nanoplastics in the environment

Author:
Hao Chen,   et al.   ; Wen Zhang; Qi Wang;     Show all 3 Authors
Source:
Frontiers of environmental science & engineering 2022 v.16 no.1 pp. 11
ISSN:
2095-2201
Subject:
Raman spectroscopy; bioavailability; detection limit; nanoplastics; pollution; toxicity
Abstract:
... Plastic pollution has been a legacy environment problems and more recently, the plastic particles, especially those ultrafine or small plastics particles, are widely recognized with increasing environmental and ecological impacts. Among small plastics, microplastics are intensively studied, whereas the physicochemical properties, environmental abundance, chemical states, bioavailability and toxici ...
DOI:
10.1007/s11783-021-1445-z

6. Evaluation of the pollutant interactions between different overlying water and sediment in simulated urban sewer system by excitation-emission matrix fluorescence spectroscopy

Author:
Hao Chen,   et al.   ; Zhenliang Liao; Jiangyong Chu; Shuangyu Zhou;     Show all 4 Authors
Source:
Environmental science and pollution research 2022 v.29 no.30 pp. 46188-46199
ISSN:
0944-1344
Subject:
adsorption; amino acids; biodegradation; desorption; dissolved organic matter; factor analysis; fluorescence emission spectroscopy; pollutants; pollution; research; sediments; sewer systems; water quality
Abstract:
... The water quality in the sewer systems can be significantly influenced by the interaction between sediment and overlying water, which are still many doubts about the impact of pollutants transformation, degradation sequence, and reaction time. In this study, the exchanging processes between sewer sediment and four different overlying waters were evaluated in simulated urban sewer systems (dark and ...
DOI:
10.1007/s11356-022-19164-4

7. How to reduce PM2.5? Perspective from a spatial autoregressive threshold panel model

Author:
Hao Chen,   et al.   ; Fen Li; Jianbao Chen; Zhuyao Zhuo;     Show all 4 Authors
Source:
Ecological indicators 2022 v.143 pp. 109353
ISSN:
1470-160X
Subject:
air pollution; air quality; consumer demand; energy; humidity; industrialization; lifestyle; models; population size; public transportation; temperature; urbanization; wind speed; China
Abstract:
... Reducing PM₂.₅ is an important way to ameliorate air quality. Research on driving factors of PM₂.₅ can provide empirical support for controlling cross-regional linkage air pollution. In this paper, we first propose a new spatial autoregressive threshold panel model and its estimation method, and then apply this methodology to study influencing elements of PM₂.₅ using the panel data of China during ...
DOI:
10.1016/j.ecolind.2022.109353

8. Rapid quantitative analysis and suspect screening of per-and polyfluorinated alkyl substances (PFASs) in aqueous film-forming foams (AFFFs) and municipal wastewater samples by Nano-ESI-HRMS

Author:
Hao Chen,   et al.   ; Chen Wu; Qi Wang; Mengyan Li;     Show all 4 Authors
Source:
Water research 2022 v.219 pp. 118542
ISSN:
0043-1354
Subject:
aeration; biotransformation; chemical species; dissociation; ionization; mass spectrometry; municipal wastewater; perfluorohexanoic acid; perfluoropentanoic acid; quantitative analysis; research; sulfonates; sulfonic acids; water; zwitterions
Abstract:
... A rapid analytical method for per- and polyfluoroalkyl substances (PFASs) combining nano-electrospray ionization and high-resolution mass spectrometry (Nano-ESI-HRMS) was developed and applied to aqueous film-forming foams (AFFFs) and wastewater samples collected from three local wastewater treatment plants (WWTPs). This method exhibited high sensitivity with lower limits of detection (LODs) of 3. ...
DOI:
10.1016/j.watres.2022.118542

9. Surface topological synthesis of polymetallic oxides coatings on lithium layered oxide for improved capacity and high-rate performance

Author:
Hao Chen,   et al.   ; Bingyi Lu; Chaoqun Guan; Hongbin Feng;     Show all 4 Authors
Source:
Journal of colloid and interface science 2022 v.617 pp. 293-303
ISSN:
0021-9797
Subject:
cathodes; electrolytes; lithium; topology
Abstract:
... Surface coating of lithium layered oxide cathode (e.g., LiNi₀.₅Co₀.₃Mn₀.₂O₂, NCM532) has become an important modified method in lithium-ion batteries for pursuing higher capacity and rate performance and safety. However, the design and synthesis of polymetallic oxide (PMO) coatings on lithium layered oxide is still a challenge. Herein, polymetallic alloys (PMA) such as NiCoMn alloys (NCM), LaZrHfM ...
DOI:
10.1016/j.jcis.2022.02.045

10. Achieving PN through the selective recovery of AOB activity in inactivated nitrifying bacteria: Combined aerobic starvation and FA

Author:
Hao Chen,   et al.   ; Dong Li; Xin Gao; Jie Zhang;     Show all 4 Authors
Source:
Journal of environmental management 2022 v.321 pp. 116004
ISSN:
0301-4797
Subject:
ammonia; carbon; dissolved oxygen; environmental management; nitrates; nitrification; nitrites; oxidation; polymers; secretion; sludge; starvation; wastewater
Abstract:
... A novel strategy combining aerobic starvation and free ammonia (FA) was proposed to achieve partial nitrification (PN). The impact of the combined strategy on nitrifying bacteria was explored in a 200-day experiment. The effluent concentration of ammonia was below the detection limits (0.1 mg/L), and the effluent concentration of nitrite and nitrate was 68.12 mg/L and 3.46 mg/L without adding carb ...
DOI:
10.1016/j.jenvman.2022.116004

11. A CFD-PBM Coupled Method to Optimize a Pilot-Scale Stirred Bioreactor

Author:
Hao Chen,   et al.   ; Xi-Bao Zhang; Zheng-Hong Luo;     Show all 3 Authors
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.23 pp. 8302-8312
ISSN:
1520-5045
Subject:
bioreactors; chemistry; energy; fermentation industry; hydrodynamics; models; process design
Abstract:
... The stirred bioreactor is the core equipment in the biological fermentation industry. This work studied the influence of blade structure and operating conditions on the bioreactor performance by the population balance model (PBM) coupled computational fluid dynamic (CFD) method. The results indicate that increasing the stirring rate can improve the gas hold-up in the pilot-scale reactor but falls ...
DOI:
10.1021/acs.iecr.2c00905

12. Effect of different valence states point defects on carrier activity and lifetime and photocatalytic properties of GaN:Be/Mg/Ca system

Author:
Hao Chen,   et al.   ; Xiang Yin; Qingyu Hou; Chunwang Zhao;     Show all 4 Authors
Source:
Journal of materials science 2022 v.57 no.2 pp. 1134-1155
ISSN:
0022-2461
Subject:
density functional theory; light; oxidation; photocatalysis; photocatalysts
Abstract:
... The effects of Be/Mg/Ca doping on the physical properties of GaN have been widely investigated experimentally and theoretically. However, the effects of Be/Mg/Ca and interstitial H coexistence with different valence states of VGₐ/VN on the photocatalytic performance of GaN are rarely reported. This study examines the structure and stability of Ga₃₄MHᵢN₃₆(VGₐ³⁻/VGₐ²⁻/VGₐ¹⁻/VGₐ⁰) (M = Be/Mg/Ga) and ...
DOI:
10.1007/s10853-021-06813-1

13. Establishment and optimization of partial nitrification/anammox/partial nitrification/anammox (PN/A/PN/A) process based on multi-stage ammonia oxidation: Using response surface method as a tool

Author:
Hao Chen,   et al.   ; Dong Li; Xin Gao; Jie Zhang;     Show all 4 Authors
Source:
Bioresource technology 2022 v.361 pp. 127722
ISSN:
0960-8524
Subject:
ammonia; anaerobic ammonium oxidation; dissolved oxygen; models; nitrites; nitrogen; oxidation; response surface methodology; technology; wastewater
Abstract:
... The presence of nitrite-oxidizing bacteria (NOB) when treating low-strength ammonia wastewater was a challenge in the application of the PN/A process. The partial nitrification/ANAMMOX/partial nitrification/ANAMMOX (PN/A/PN/A) process based on multiple oxidations of ammonia was proposed to solve this problem. The influence of independent variables such as nitrite concentration was analyzed based o ...
DOI:
10.1016/j.biortech.2022.127722

14. Isolation, identification, and pathogenicity of a ALV-K strain from Chinese indigenous chicken breed

Author:
Hao Chen,   et al.   ; Youjiang Diao; Xiaolong Sun; Yixin Wang;     Show all 4 Authors
Source:
Poultry science 2022 v.101 no.11 pp. 102116
ISSN:
0032-5791
Subject:
Avian leukosis virus; chickens; genes; growth retardation; immune response; nucleotide sequences; pathogenicity; viremia; yolk sac; China
Abstract:
... Subgroup K avian leukosis virus (ALV-K) is a new subgroup of avian leukosis virus (ALV) first identified in Chinese indigenous chickens in recent years. In this study, an ALV-K strain was isolated from Luhua chicken in Shandong province, China, and designated SD20LH01. The full-length genomic sequence of SD20LH01 was 7491 bp, which had the highest homology with ALV-K reference strains GDFX0601, GD ...
DOI:
10.1016/j.psj.2022.102116

15. RSMT: A Remote Sensing Image-to-Map Translation Model via Adversarial Deep Transfer Learning

Author:
Hao Chen,   et al.   ; Jieqiong Song; Jun Li; Jiangjiang Wu;     Show all 4 Authors
Source:
Remote Sensing 2022 v.14 no.4 pp. -
ISSN:
2072-4292
Subject:
geometry; infrastructure; models
Abstract:
... Maps can help governments in infrastructure development and emergency rescue operations around the world. Using adversarial learning to generate maps from remote sensing images is an emerging field. As we now know, the urban construction styles of different cities are diverse. The current translation methods for remote sensing image-to-map tasks only work on the specific regions with similar style ...
DOI:
10.3390/rs14040919

16. Uncover the flavor code of strong-aroma baijiu: Research progress on the revelation of aroma compounds in strong-aroma baijiu by means of modern separation technology and molecular sensory evaluation

Author:
Hao Chen,   et al.   ; Junshan Wang; Yashuai Wu; Dongrui Zhao;     Show all 4 Authors
Source:
Journal of food composition and analysis 2022 v.109 pp. 104499
ISSN:
0889-1575
Subject:
flavor; food composition; food industry; income; odors; sensory evaluation; China
Abstract:
... Baijiu is widely regarded as the national liquor of China and occupies a vital position in China’s food industry. In 2020, the total sales revenue of baijiu industry reached 583.639 billion yuan. Strong-aroma baijiu is one of the four basic aroma baijiu types, and is popular among consumers because of its pleasant flavor. Thus, the researches on the trace components in strong-aroma baijiu and thei ...
DOI:
10.1016/j.jfca.2022.104499

17. A comparative study on energy efficient CO2 capture using amine grafted solid sorbent: Materials characterization, isotherms, kinetics and thermodynamics

Author:
Hao Chen,   et al.   ; Sheying Dong; Yaojun Zhang; Panyang He;     Show all 4 Authors
Source:
Energy 2022 v.239 pp. 122348
ISSN:
0360-5442
Subject:
activation energy; adsorption; aluminum silicates; carbon dioxide; comparative study; desorption; energy efficiency; greenhouse effect; sorbents; surface area
Abstract:
... Excessive emission of CO₂ is the main reason for the greenhouse effect. Amine-functionalized solid sorbents are promising candidates for reducing CO₂ emissions, while sorbent quality depends greatly on the support. Herein, a new type of aluminosilicate solid acid support with a high specifical surface area of 412 m²/g and an acid amount of 7.88 mmol/g was fabricated using a low-energy hydrothermal ...
DOI:
10.1016/j.energy.2021.122348

18. Maternal effect and dietary supplementation of estradiol-17β on female zebrafish (Danio rerio) affects the swimming behavior and stress-coping styles of its offspring

Author:
Te-Hao Chen,   et al.   ; Su Mei Wu; Yu-Jen Tseng;     Show all 3 Authors
Source:
Comparative biochemistry and physiology 2022 v.252 pp. 109211
ISSN:
1532-0456
Subject:
Danio rerio; cartilage; chondrogenesis; cold stress; cortisol; dietary supplements; fecundity; females; fish; juveniles; larvae; males; maternal effect; progeny
Abstract:
... Extrinsic estradiol-17β (E2) is an environmental hormone. Female fish exposure to waterborne E2 might affect the development of craniofacial cartilage of its offspring. The present study investigates the effects of maternal E2 on larval craniofacial cartilage development by administering oral feed containing E2 (F-E2) to female zebrafish, and examines whether the swimming behavior and their stress ...
DOI:
10.1016/j.cbpc.2021.109211

19. Cell performance and flow losses of proton exchange membrane fuel cells with orientated-type flow channels

Author:
Hao Chen,   et al.   ; Hang Guo; Fang Ye; Chong Fang MA;     Show all 4 Authors
Source:
Renewable energy 2022 v.181 pp. 1338-1352
ISSN:
0960-1481
Subject:
friction; mathematical models; surface roughness
Abstract:
... Orientated-type flow channels of proton exchange membrane fuel cells having baffles increase the cell performance, however, the higher power loss accounted by baffles, is a non-ignorable disadvantage. Previous literature proves that the baffles in channels cause the increase in power losses, while how the baffles affect the power losses, including the frictional losses and local losses, are still ...
DOI:
10.1016/j.renene.2021.09.107

20. Composition identification and UV-C irradiation growth inhibition effect of green shading on the greenhouse cover

Author:
Fang-Hao Chen,   et al.   ; Nan-Huan Ji; Zhen-Zhen Pang;     Show all 3 Authors
Source:
Science of the total environment 2022 v.850 pp. 158024
ISSN:
0048-9697
Subject:
chlorophyll; dust; greenhouse production; greenhouses; growth retardation; horticulture; irradiation; light intensity; microalgae; pollution; ultraviolet radiation
Abstract:
... Greenhouse cover pollution with green shading composed of dust, microalgae and bacteria is a severe problem in tropical areas. The shading results in lower greenhouse indoor light intensity reducing the yield and quality of protected horticulture crops. However, few studies have focused on environmentally efficient ways to remove green shading to increase greenhouse production. In this study, five ...
DOI:
10.1016/j.scitotenv.2022.158024