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1. Impact of natural gullies on groundwater hydrology in the Zoige peatland, China

Author:
Gao, Peng,   et al.   ; Li, Zhiwei;     Show all 2 Author
Source:
Journal of hydrology 2019 v.21 pp. 25-39
ISSN:
2214-5818
Subject:
basins; cold; cutting; groundwater; highlands; peat; peatlands; ravines; saturated hydraulic conductivity; seepage; water table; China; Yellow River
Abstract:
... The study area was in the upland peatland within the Zoige basin with elevations ranging between 3400 and 3800 m. It is located in the source area of Upper Yellow River that is developed on the Qinghai-Tibet Plateau, China.We examined possible influence of two different types of gullies on groundwater hydrology in this alpine peatland, the gullies whose beds cutting through the peat layer and thos ...
DOI:
10.1016/j.ejrh.2018.12.001

2. Channel adjustment after artificial neck cutoffs in a meandering river of the Zoige basin within the Qinghai-Tibet Plateau, China

Author:
Gao, Peng,   et al.   ; Li, Zhiwei;     Show all 2 Author
Source:
Catena 2019 v.172 pp. 255-265
ISSN:
0341-8162
Subject:
basins; rivers; sediments; streams; summer; China; Yellow River
Abstract:
... Neck cutoff is an essential process that significantly changes the morphodynamic characteristics of a meandering bend. In reality, however, observing natural processes of a neck cutoff is very difficult. In this study, we artificially triggered neck cutoffs by excavating a 0.4 m (width) × 0.5 m (depth) ditch to connect the beginning and ending of two highly convoluted bends along a meandering trib ...
DOI:
10.1016/j.catena.2018.08.042

3. Applications and challenges of elemental sulfur, nanosulfur, polymeric sulfur, sulfur composites, and plasmonic nanostructures

Author:
Gao, Peng,   et al.   ; Teng, Yong; Zhou, Qixing;     Show all 3 Authors
Source:
Critical reviews in environmental science and technology 2019 v.49 no.24 pp. 2314-2358
ISSN:
1547-6537
Subject:
health effects assessments; nanomaterials; physics; polymers; risk; risk reduction; sulfur
Abstract:
... As an abundant and biologically active element, sulfur has been applied in various fields. Through the nanotechnology method, nanosulfur is synthesized with the merits of size effects. Differentiated properties, structures, and functions of sulfur could lead to different applications. In particular, various sulfur composites are synthesized and showed satisfied performance in environmental fields. ...
DOI:
10.1080/10643389.2019.1609856

4. Dynamic changes of groundwater storage and flows in a disturbed alpine peatland under variable climatic conditions

Author:
Gao, Peng,   et al.   ; Li, Zhiwei; Lu, Hanyou;     Show all 3 Authors
Source:
Journal of hydrology 2019
ISSN:
0022-1694
Subject:
climate change; climatic factors; cutting; dry season; evapotranspiration; groundwater; groundwater flow; hydrologic models; peat; peatlands; rain; ravines; simulation models; water budget; water storage; water table; wet season; China
Abstract:
... Climate change and gullies (and ditches) on peatlands are well known factors altering peat hydrology. Yet, exactly how this alteration emerges from interaction of these factors with groundwater dynamics is still not fully understood. In this study, we tackled this issue by coupling field measurement with model simulation using Visual MODFLOW. Groundwater processes and the associated water budget d ...
DOI:
10.1016/j.jhydrol.2019.05.032

5. Mapping the agricultural drought based on the long-term AVHRR NDVI and North American Regional Reanalysis (NARR) in the United States, 1981–2013

Author:
Gao, Peng,   et al.   ; Lu, Junyu; Carbone, Gregory J.;     Show all 3 Authors
Source:
Applied geography 2019 v.104 pp. 10-20
ISSN:
0143-6228
Subject:
advanced very high resolution radiometer; atmospheric precipitation; corn; crop yield; drought; monitoring; normalized difference vegetation index; remote sensing; satellites; simulation models; soil water; surface temperature; vegetation; United States
Abstract:
... To provide a long-term perspective of drought variability from 1981 to present, we develop a new monthly agriculturally-based drought index called the Integrated Scaled Drought Index (ISDI). This index integrates Normalized Difference Vegetation Index (NDVI) from Advanced Very High Resolution Radiometer (AVHRR) data (available from 1981 to present), land surface temperature (LST), precipitation (P ...
DOI:
10.1016/j.apgeog.2019.01.005

6. Experimental study on the process of neck cutoff and channel adjustment in a highly sinuous meander under constant discharges

Author:
Gao, Peng,   et al.   ; Li, Zhiwei; Wu, Xinyu;     Show all 3 Authors
Source:
Geomorphology 2019 v.327 pp. 215-229
ISSN:
0169-555X
Subject:
bank erosion; cameras; gauges; geometry; hydraulic flumes; rivers; stream channels; topography; Yangtze River
Abstract:
... Neck cutoff is an essential process limiting evolution of meandering rivers, in particular, the highly sinuous ones. Yet this process is extremely difficult to replicate in laboratory flumes. Here we reproduced this process in a laboratory flume by reducing at the 1/2500 scale the current planform of the Qigongling Bend (centerline length 13 km, channel width 1.2 km, and neck width 0.55 km) in the ...
DOI:
10.1016/j.geomorph.2018.11.002

7. Boosting Cancer Therapy with Organelle-Targeted Nanomaterials

Author:
Gao, Peng,   et al.   ; Pan, Wei; Li, Na; Tang, Bo;     Show all 4 Authors
Source:
ACS applied materials & interfaces 2019 v.11 no.30 pp. 26529-26558
ISSN:
1944-8252
Subject:
Golgi apparatus; adverse effects; cell death; drugs; endoplasmic reticulum; lysosomes; mitochondria; multiple drug resistance; nanomaterials; neoplasm cells; neoplasms; therapeutics; tissues
Abstract:
... The ultimate goal of cancer therapy is to eliminate malignant tumors while causing no damage to normal tissues. In the past decades, numerous nanoagents have been employed for cancer treatment because of their unique properties over traditional molecular drugs. However, lack of selectivity and unwanted therapeutic outcomes have severely limited the therapeutic index of traditional nanodrugs. Recen ...
DOI:
10.1021/acsami.9b01370

8. Characterization and expression profiling of odorant-binding proteins in Anoplophora glabripennis Motsch

Author:
Gao, Peng,   et al.   ; Wang, Jingzhen; Luo, Youqing; Tao, Jing;     Show all 4 Authors
Source:
Gene 2019 v.693 pp. 25-36
ISSN:
0378-1119
Subject:
Anoplophora glabripennis; antennae; females; functional diversity; gene expression; genes; hosts; hydrophobicity; insects; legs; males; odorant receptors; oviposition sites; palps; phylogeny; plant-insect relations; sex pheromones; smell; taste; transcriptomics; trees
Abstract:
... In insects, olfaction plays a critical role in locating hosts, recognizing mates, and selecting oviposition sites. The Asian long-horned beetle (Anoplophora glabripennis Motschulsky) feeds on 43 species of trees in 15 families, but its chemosensory mechanisms are poorly understood. Herein, genes encoding 61 odorant-binding proteins (OBPs) were identified from the published genome and our previous ...
DOI:
10.1016/j.gene.2018.12.075

9. Oxidative phenol-arene and phenol-phenol cross-coupling using periodic acid

Author:
Gao, Peng-Cheng,   et al.   ; Chen, Huan; Grigoryants, Vladimir; Zhang, Qiang;     Show all 4 Authors
Source:
Tetrahedron 2019 v.75 no.13 pp. 2004-2011
ISSN:
0040-4020
Subject:
ambient temperature; chemical structure; cross-coupling reactions; naphthols; phenol
Abstract:
... A simple, metal-free protocol for unsymmetrical biaryl coupling using H5IO6 is reported. H5IO6 was evaluated for a novel application in the oxidative cross-coupling of phenol-arene, phenol-phenol, and phenol-naphthol compounds. In this work, most of the couplings were completed within 30 min at ambient temperature. 30 coupling products were conveniently obtained using only 0.5 equivalent of H5IO6 ...
DOI:
10.1016/j.tet.2019.02.021

10. Fluidization characteristics of a U-type reduction chamber in a suspension roaster

Author:
Gao, Peng,   et al.   ; Tang, Zhidong; Han, Yuexin; Li, Erlei;     Show all 4 Authors
Source:
Powder technology 2019 v.345 pp. 64-73
ISSN:
0032-5910
Subject:
aeration; aluminum oxide; bubbles; energy conservation; iron; particle size; powders; roasting
Abstract:
... Suspension magnetization roasting technology is a new energy-saving technology in iron ore separation, and good results have been achieved in the treatment of complex and refractory iron ore resources. To solve the problem of uneven quality of the reduced product and poor discharge of the material, a U-type reduction chamber, with dual functions of reduction chamber and sealing valve, is designed ...
DOI:
10.1016/j.powtec.2018.12.088

11. Changes in run‐off and sediment load in the three parts of the Yellow River basin, in response to climate change and human activities

Author:
Gao, Peng,   et al.   ; Gu, Chaojun; Mu, Xingmin; Zhao, Guangju; Sun, Wenyi;     Show all 5 Authors
Source:
Hydrological processes 2019 v.33 no.4 pp. 585-601
ISSN:
0885-6087
Subject:
anthropogenic activities; climate change; humans; pollution load; rain; runoff; sediment yield; soil; water conservation; watersheds; Yellow River
Abstract:
... Hydrological regimes in the Yellow River have changed significantly because of climate change and intensive human interventions. These changes present severe challenges to water resource utilization and ecological development. Variation of run‐off, suspended sediment load (SSL), and eight precipitation indices (P1: 0–12 mm·day⁻¹, P12: 12–25 mm·day⁻¹, P25: 25–50 mm·day⁻¹, P50: P ≥ 50 mm·day⁻¹ and c ...
DOI:
10.1002/hyp.13345

12. Pressure boost thermochemical sorption heat pump cycle

Author:
Gao, Peng,   et al.   ; Shao, Liang-Liang; Zhang, Chun-Lu;     Show all 3 Authors
Source:
Energy 2019 v.169 pp. 1090-1100
ISSN:
0360-5442
Subject:
ammonia; desorption; drying; energy efficiency; evaporation; heat production; heat pumps; industry; sorbents; sorption; temperature; vapors
Abstract:
... Drying is a common process in industries and usually discharges much waste heat. Heat pump is an energy efficient approach to upgrading waste heat to a higher drying temperature. In this paper, a novel pressure boost thermochemical sorption heat pump (TSHP) is proposed. Different from existing salt/ammonia heat pump cycles, a compressor is installed between two reactors to drive the cycle so that ...
DOI:
10.1016/j.energy.2018.12.119

13. A pressure drop model of U-typed reduction chamber for iron ore suspension roasting

Author:
Gao, Peng,   et al.   ; Tang, Zhidong; Han, Yuexin; Li, Erlei; Zhang, Xiaolong;     Show all 5 Authors
Source:
Powder technology 2019 v.343 pp. 255-261
ISSN:
0032-5910
Subject:
air; aluminum oxide; cold; iron; models; powders; roasting
Abstract:
... A pressure drop model for a U-typed reduction chamber was proposed from the pressure balance law to predict pressure in the bottom of fluidization chamber under its stable operation state. During steady roasting, the feeding particles descend in moving-bed mode in the supply chamber, while the particles move upwards in fluidization mode in the fluidization chamber. A cold test system was establish ...
DOI:
10.1016/j.powtec.2018.11.020

14. Capitalizing on a wealth of spatial information: Improving biogeographic regionalization through the use of spatial clustering

Author:
Gao, Peng,   et al.   ; Kupfer, John A.;     Show all 2 Author
Source:
Applied geography 2018 v.99 pp. 98-108
ISSN:
0143-6228
Subject:
climatic factors; data collection; ecoregions; geographical distribution; mammals; natural resource management; spatial data; Angola
Abstract:
... Biogeographic regionalization, the categorization of geographical areas on the basis of their biotas, provides a valuable approach for understanding biogeographical and ecological patterns and processes and serves as a valuable tool in conservation management practices. Contemporary, quantitative approaches for delineating and mapping biogeographic regions that make use of increasingly available s ...
DOI:
10.1016/j.apgeog.2018.08.002

15. Hydrologic alteration and possible underlying causes in the Wuding River, China

Author:
Gao, Peng,   et al.   ; Tian, Xiaojing; Zhao, Guangju; Mu, Xingmin; Zhang, Pengfei; Tian, Peng; Sun, Wenyi;     Show all 7 Authors
Source:
The Science of the total environment 2019 v.693 pp. 133556
ISSN:
0048-9697
Subject:
basins; dams (hydrology); land use change; rivers; runoff; soil; stream flow; time series analysis; water conservation; water reservoirs; watersheds; China
Abstract:
... Understanding hydrological alteration of rivers and the potential driving factors are crucial for water resources management in the watershed. This study analyzed the daily runoff time series at six gauging stations during 1960–2016 in Wuding River basin, northwestern China. The Mann–Kendall test and Lee-Heghinian method were employed to detect the temporal trends and abrupt changes in annual stre ...
DOI:
10.1016/j.scitotenv.2019.07.362

16. Landscape patches influencing hillslope erosion processes and flow hydrodynamics

Author:
Gao, Peng,   et al.   ; Sun, Wenyi; Mu, Xingmin; Zhao, Guangju; Li, Jiuyi; Zhang, Yongqiang; Chiew, Francis;     Show all 7 Authors
Source:
Geoderma 2019 v.353 pp. 391-400
ISSN:
0016-7061
Subject:
field experimentation; flow resistance; grasslands; hydrodynamics; landscapes; overland flow; rain; rainfall simulation; runoff; sediment transport; sediment yield; sediments; shear stress; soil erosion; streams; surface roughness; topographic slope
Abstract:
... Exploring overland flow resistance and sediment delivery capacity under different landscape vegetation conditions is critical for better understanding hydrodynamic mechanisms of soil erosion processes and hydrological connectivity on hillslopes. To evaluate flow resistance relations and sediment transport for landscape vegetation coverage and combinate effect of vegetation patches, field simulated ...
DOI:
10.1016/j.geoderma.2019.07.003

17. Emerging and legacy PAHs in urban soils of four small cities: Concentrations, distribution, and sources

Author:
Gao, Peng,   et al.   ; Xu, Min; Liu, Yalan; da Silva, Evandro B.; Xiang, Ping; Ma, Lena Q.;     Show all 6 Authors
Source:
The Science of the total environment 2019 v.685 pp. 463-470
ISSN:
0048-9697
Subject:
United States Environmental Protection Agency; biomass; carcinogenicity; cities; coal; combustion; health effects assessments; human health; models; particulate emissions; polycyclic aromatic hydrocarbons; soil remediation; soil sampling; urban soils; Florida
Abstract:
... Polycyclic aromatic hydrocarbons (PAHs) are widespread organic contaminants in the environment, much being accumulated in soils. Although their concentrations in large cities have been studied, their levels in small cities were less studied. This study determined the concentrations, distributions, and sources of 16 USEPA priority PAHs (legacy PAHs) and 6 emerging PAHs in urban soils of four small ...
DOI:
10.1016/j.scitotenv.2019.05.403

18. Integrating agricultural land, water yield and soil conservation trade-offs into spatial land use planning

Author:
Gao, Peng,   et al.   ; Yang, Xiaonan; Sun, Wenyi; Li, Pengfei; Mu, Xingmin; Zhao, Guangju;     Show all 6 Authors
Source:
Ecological indicators 2019 v.104 pp. 219-228
ISSN:
1470-160X
Subject:
Soil and Water Assessment Tool model; agricultural land; environmental indicators; land use planning; pollution load; river water; sediment yield; soil conservation; soil erosion; spatial variation; sustainable development; water resources; water yield; watersheds; China
Abstract:
... Since the implementation of the Grain for Green (GfG) project in 1999, the environment of China's Loess Plateau has been largely restored, and soil erosion has been controlled in places. However, new problems associated with food and river water resource security have arisen. Thus, to achieve sustainable development, it is critical to integrate agriculture and resource conservation with soil conse ...
DOI:
10.1016/j.ecolind.2019.04.082

19. Optimal synthesis of a direct Z-scheme photocatalyst with ultrathin W18O49 nanowires on g-C3N4 nanosheets for solar-driven oxidation reactions

Author:
Gao, Peng,   et al.   ; Xiao, Yi; Tao, Xueqin; Qiu, Ganhua; Dai, Zhifeng; Li, Benxia;     Show all 6 Authors
Source:
Journal of colloid and interface science 2019 v.550 pp. 99-109
ISSN:
0021-9797
Subject:
active sites; benzylamines; carbon nitride; electron paramagnetic resonance spectroscopy; electron transfer; energy; lighting; nanosheets; nanowires; oxidation; phenol; photocatalysis; photocatalysts; pollutants; semiconductors
Abstract:
... Constructing Z-scheme photocatalysts is an effective approach to enhance the conversion efficiency of solar to chemical energy. Herein, W18O49/g-C3N4 heterostructures have been synthesized by growing W18O49 ultrathin nanowires on g-C3N4 nanosheets via a convenient solvothermal process. Various characterizations were performed on the materials to understand the structure-performance relationship. T ...
DOI:
10.1016/j.jcis.2019.04.081

20. Spatiotemporal variations of extreme precipitation events at multi-time scales in the Qinling-Daba mountains region, China

Author:
Gao, Peng,   et al.   ; Shao, Yiting; Mu, Xingmin; He, Yi; Sun, Wenyi; Zhao, Guangju;     Show all 6 Authors
Source:
Quaternary international 2019 v.525 pp. 89-102
ISSN:
1040-6182
Subject:
atmospheric circulation; atmospheric precipitation; autumn; climate change; data collection; disasters; monsoon season; mountains; spatial variation; spring; summer; temporal variation; winter; Arctic region; China; South China Sea
Abstract:
... Global climate change has contributed to frequent occurrence of extreme precipitation events, resulting in more severe natural disasters and restricting regional development. The Qinling-Daba mountains region (Qinba) is a transitional zone in central China with high ecological vulnerability and sensitivity. It is therefore essential to investigate the dynamics of precipitation extremes in the regi ...
DOI:
10.1016/j.quaint.2019.07.029