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Book ; Online: Stacking and Thickness Effects on Cross-Plane Thermal Conductivity of Hexagonal Boron Nitride

Wang, S. G. / Feng, H. F. / Guo, Zhi-Xin

2023

Abstract: Recently, the in-plane thermal transport in van der Waals (vdW) materials such as graphene, hexagonal boron nitride (h-BN), and transition metal dichalcogenides (TMDs) has been widely studied. Whereas, the cross-plane one is far from sufficient. Based on ...

Abstract	Recently, the in-plane thermal transport in van der Waals (vdW) materials such as graphene, hexagonal boron nitride (h-BN), and transition metal dichalcogenides (TMDs) has been widely studied. Whereas, the cross-plane one is far from sufficient. Based on the non-equilibrium molecular dynamics simulations and Boltzmann transport equation, here we reveal the stacking and thickness effects on the cross-plane thermal conductivity (K) of h-BN. We find that K can be significantly modulated by both the stacking structure and thickness (d) of h-BN, which is unexpected from the viewpoint of its smooth in-plane structure and weak interlayer interaction. In the small thickness region (d<6 nm), K of h-BN at room temperature significantly increases with thickness, following a power law of K ~ d^b with b=0.84, 0.66, and 0.92 for AA', AB, and AB' stacking structures, respectively. Moreover, K of AB' structure reaches up to 60% larger than that of AA' and AB structures with d=5.3 nm, showing the remarkable stacking effect. We also find that the stacking effect on K changes dramatically with d increasing, where AA' stacking has the largest K with d > 200 nm. We finally clarify that such exotic stacking and thickness dependence of K is owing to the competing effect of excited number of phonons and phonon relaxation time, both of which directly affect the thermal conductivity. Our findings may provide new insights into the cross-plane thermal management in vdW materials. Comment: 5 figures
Keywords	Condensed Matter - Materials Science ; Condensed Matter - Mesoscale and Nanoscale Physics
Subject code	530
Publishing date	2023-03-19
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: A multivariate statistical input–output model for analyzing water-carbon nexus system from multiple perspectives - Jing-Jin-Ji region

Wang, P.P. / Li, Y.P. / Huang, G.H. / Wang, S.G.

Applied energy. 2022 Mar. 15, v. 310

2022

Abstract: Water scarcity and carbon dioxide (CO₂) emission continue to be challenges faced by decision makers in urban and regional scales. In this study, a multivariate statistical input–output (MSIO) model is developed for analyzing water-carbon nexus system, ... ...

Abstract	Water scarcity and carbon dioxide (CO₂) emission continue to be challenges faced by decision makers in urban and regional scales. In this study, a multivariate statistical input–output (MSIO) model is developed for analyzing water-carbon nexus system, through incorporating techniques of input–output analysis (IOA) and multivariate statistical analysis (MSA) into a general framework. MSIO is able to: (i) recognize the complicated characteristics of multi-element, multi-sector and multi-factor in water-carbon nexus system from network and statistical perspectives; (ii) simulate different technology-upgrade policies on key transmission sectors that are the middle nodes of supply chain paths; (iii) quantify the individual and interactive effects of sectors on water-carbon variations. MSIO is applied to analyzing water-carbon nexus system in Jing-Jin-Ji region (China). Major findings are: (i) for the region in 2030, agriculture, service and food industries would be typical water consumers (accounting for 35.0%, 22.8% and 10.8%); metal, service, and electricity and heat industries would be typical CO₂ emitters (accounting for 24.1%, 22.0% and 19.7%); (ii) CO₂ reduction policy could aim at the sectors of cluster 1 (i.e. energy production, manufacturing, construction and service industries); policy oriented toward water resource could aim at the sectors of cluster 2 (i.e. agriculture, food and textile industries); (iii) technology-upgrade policy on Beijing’s electricity and heat industry would have significant performance in water-carbon reductions, indicating that this sector is highly dependent on upstream industry and intra-regional trade supply; (iv) the synergy of Hebei’s heavy industry and Beijing’s electricity and heat industry would perform best in water-carbon management (i.e. water-consumption intensity and CO₂-emission intensity would decrease by 3.3% and 15.3%, respectively), suggesting that it is crucial to improve the production capacity and output efficiency of these sectors from the perspective of the middle of the supply chain.
Keywords	carbon dioxide ; electricity ; energy ; fabrics ; heat ; input output analysis ; issues and policy ; models ; multivariate analysis ; supply chain ; trade ; water shortages ; China
Language	English
Dates of publication	2022-0315
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2000772-3
ISSN	0306-2619
ISSN	0306-2619
DOI	10.1016/j.apenergy.2022.118560
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Investigation of performance parameters of building thermal battery

Zhang Y.Z. / Wang S.G. / Jiang S. / Wang J.H. / Wu X.Z. / Zhang T.F.

E3S Web of Conferences, Vol 356, p

2022 Volume 01025

Abstract: The concept of a building thermal battery refers to storing the supplied heat and releasing it the another time through radiation and convection. The introduction of building thermal battery performance has created a more convenient solution to the ... ...

Abstract	The concept of a building thermal battery refers to storing the supplied heat and releasing it the another time through radiation and convection. The introduction of building thermal battery performance has created a more convenient solution to the problems of building load estimation, control and optimization, building-grid integration, etc. Some literatures have expanded the original definition of building thermal batteries, including PV RE (photovoltaic renewable energy), HVAC and other units. Starting from the building body, this investigation studies a building energy system. With reference to the performance parameters of traditional rechargeable batteries, the corresponding performance parameters of building thermal batteries are developed. The RC model is further used to model the performance parameters of the building thermal battery respectively. Among them, the corresponding parameter values of the RC model are obtained by parameter identification. Finally, the heat storage and heat release characteristics of the building integrated energy system are obtained. It makes the application of buildings as batteries more flexible in the urban energy network.
Keywords	Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Configurations and exergy analysis of district heating substations based mainly on renewable energy

Gao Y.J. / Wang S.G. / Jiang S. / Wu X.Z. / Wang J.H. / Zhang T.F. / Ma Z.J.

E3S Web of Conferences, Vol 356, p

2022 Volume 01005

Abstract: The energy in the district heating system is transforming into a clean, low-carbon and integrated production and consumption mode to reduce greenhouse gas emissions and dependence on fossil energy. The district heating system has developed to the fifth ... ...

Abstract	The energy in the district heating system is transforming into a clean, low-carbon and integrated production and consumption mode to reduce greenhouse gas emissions and dependence on fossil energy. The district heating system has developed to the fifth generation currently, and the water temperature is continuously reduced, and thus the heating efficiency is improved. The proportion of renewable energy sources such as solar, wind, and geothermal energy in substations will continue to increase. In this paper, substation configurations of the fifth-generation district heating system are firstly reviewed, and the exergy analysis is applied to the thermodynamic simulation of the district substations. Thermal simulation models of several types of substations mainly based on solar water heating, water source- and air source- heat pumps or combined forms are developed, the conventional heat exchanger substation is also modeled to compare their performance. The optimization algorithm in Matlab/Simulink is used to solve the thermodynamic numerical model, and performance indicators such as exergy and efficiency are selected to evaluate the performance of these systems.
Keywords	Environmental sciences ; GE1-350
Subject code	620
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Spatiotemporal distribution, source apportionment and combined pollution of antibiotics in natural waters adjacent to mariculture areas in the Laizhou Bay, Bohai Sea.

Han, Q F / Song, C / Sun, X / Zhao, S / Wang, S G

Chemosphere

2021 Volume 279, Page(s) 130381

Abstract: The spatiotemporal distribution, source apportionment and combined pollution of 14 antibiotics in natural waters adjacent to mariculture farms of Laizhou Bay in the Bohai Sea were studied. The contribution proportion and quantity of each potential ... ...

Abstract	The spatiotemporal distribution, source apportionment and combined pollution of 14 antibiotics in natural waters adjacent to mariculture farms of Laizhou Bay in the Bohai Sea were studied. The contribution proportion and quantity of each potential pollution source to antibiotics in natural water bodies were quantitatively described. The correlations between heavy metals and antibiotics and their underlying mechanisms in natural and aquaculture water environment were analyzed. Fourteen antibiotics were detected in natural water and sediment in the coastal area of Laizhou Bay. The maximum concentrations of sulfamethazine and trimethoprim in water reached tens or even hundreds of μg/L in winter. Trimethoprim was the main antibiotic in natural water bodies in winter and summer, and enrofloxacin was the principal antibiotic in sediments. Enrofloxacin, ciprofloxacin and oxytetracycline were detected in all underground water samples; thus, control of these antibiotics needs to be made a priority to mitigate groundwater contamination. PCA-MLR revealed that the potential sources of antibiotics in natural waters of Laizhou Bay include the mariculture wastewater (18.3%), the domestic sewage (63.3%) and the livestock wastewater (18.4%). Therefore, the antibiotic burden of Laizhou Bay was principally from the domestic sewage. In natural water, the concentration of Cu was positively correlated with antibiotics, which might be related to the common sources, the competitive adsorption in sediments and the easy complexation characteristic of Cu and antibiotics. Positive correlations among antibiotics and heavy metals were observed in mariculture sediments, while negative relationships were observed in natural sediments.
MeSH term(s)	Anti-Bacterial Agents/analysis ; Bays ; China ; Environmental Monitoring ; Geologic Sediments ; Metals, Heavy/analysis ; Water Pollutants, Chemical/analysis
Chemical Substances	Anti-Bacterial Agents ; Metals, Heavy ; Water Pollutants, Chemical
Language	English
Publishing date	2021-03-28
Publishing country	England
Document type	Journal Article
ZDB-ID	120089-6
ISSN	1879-1298 ; 0045-6535 ; 0366-7111
ISSN (online)	1879-1298
ISSN	0045-6535 ; 0366-7111
DOI	10.1016/j.chemosphere.2021.130381
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 2540: Show issues

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Article: Effect of exemestane on the invasive growth of endometrial carcinoma HHUA cells.

Wang, S G / Meng, X M / Dong, Y Z

European journal of gynaecological oncology

2018 Volume 37, Issue 5, Page(s) 674–677

Abstract: Objective: To investigate the effect of exemestane on HHUA human endometrial carcinoma cells.: Materials and methods: The HHUA human endometrial carcinoma cells were treated with various concentrations of exemestane, and its effects on cell growth ... ...

Abstract	Objective: To investigate the effect of exemestane on HHUA human endometrial carcinoma cells. Materials and methods: The HHUA human endometrial carcinoma cells were treated with various concentrations of exemestane, and its effects on cell growth and apoptosis were investigated in vitro. The cell apoptosis was analyzed by flow cytometry and RT-PCR was used to investigate the expression of CD44s. The invasion ability of HHUA human endometrial carcinoma cells which treated with exemestane were assessed using transwell chamber model. Results: At increasing doses of exemestane, a simultaneous increase in apoptotic subpopulations was detected when compared with group A (p < 0.05); the CD44s expression was found to be suppressed after the exemestane treatment. The decrease was a dose-dependent with exemestane treatment. Conclusion: 6x10⁸ mol/L exemestane is an optimal dose to inhibit the expression of CD44s mRNA and inhibit the invasive growth of the endometrial carcinoma HHUA cells.
MeSH term(s)	Androstadienes/pharmacology ; Antineoplastic Agents/pharmacology ; Apoptosis/drug effects ; Aromatase Inhibitors/pharmacology ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Dose-Response Relationship, Drug ; Endometrial Neoplasms/drug therapy ; Endometrial Neoplasms/pathology ; Female ; Humans ; Hyaluronan Receptors/genetics
Chemical Substances	Androstadienes ; Antineoplastic Agents ; Aromatase Inhibitors ; CD44 protein, human ; Hyaluronan Receptors ; exemestane (NY22HMQ4BX)
Language	English
Publishing date	2018-05-14
Publishing country	China
Document type	Journal Article
ZDB-ID	604589-3
ISSN	0392-2936
ISSN	0392-2936
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 1679: Show issues

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Article ; Online: Wernekinck Commissure Syndrome with Holmes Tremor: A Report of Two Cases and Review of Literature.

Ling, Y T / Li, J M / Ling, Y / Wang, S G / Wang, J T / Zhang, X Y / Dong, L H

Neurology India

2022 Volume 70, Issue 1, Page(s) 281–284

Abstract: Wernekinck commissure syndrome is a rare midbrain infarction, it consists of several symptoms including bilateral cerebellar ataxia, ophthalmoplegia, and palatal tremor. Holmes tremor is a rare clinical syndrome characterized by a combination of resting, ...

Abstract	Wernekinck commissure syndrome is a rare midbrain infarction, it consists of several symptoms including bilateral cerebellar ataxia, ophthalmoplegia, and palatal tremor. Holmes tremor is a rare clinical syndrome characterized by a combination of resting, postural, and action tremors. We describe two cases of Wernekinck commissure syndrome with Holmes tremor. To the best of our knowledge, it has been rarely reported in the literature to date. Both of the cases were presented with acute onset of bilateral cerebellar ataxia, dysarthria, and Holmes tremor. In the treatment, one patient was given "clonazepam and benheisol," the other was received acupuncture therapy, both of them showed a marked improvement in ataxia and tremor.
MeSH term(s)	Ataxia ; Cerebellar Ataxia ; Humans ; Mesencephalon ; Syndrome ; Tremor/complications ; Tremor/therapy
Language	English
Publishing date	2022-03-09
Publishing country	India
Document type	Case Reports ; Journal Article ; Review
ZDB-ID	415522-1
ISSN	1998-4022 ; 0028-3886
ISSN (online)	1998-4022
ISSN	0028-3886
DOI	10.4103/0028-3886.338697
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 698: Show issues

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Article ; Online: Distribution, combined pollution and risk assessment of antibiotics in typical marine aquaculture farms surrounding the Yellow Sea, North China.

Han, Q F / Zhao, S / Zhang, X R / Wang, X L / Song, C / Wang, S G

Environment international

2020 Volume 138, Page(s) 105551

Abstract: This study focused on the distribution, combined pollution, potential source and risk assessment of 17 antibiotics in an aquaculture ecosystem surrounding the Yellow sea, North China. Antibiotics were detected in various matrices (seawater, sediment/ ... ...

Abstract	This study focused on the distribution, combined pollution, potential source and risk assessment of 17 antibiotics in an aquaculture ecosystem surrounding the Yellow sea, North China. Antibiotics were detected in various matrices (seawater, sediment/biofilm, organism and feed) in different aquaculture modes (greenhouse and outdoor aquaculture) during the wet and dry seasons in coastal areas of Shandong province. The innovation points of the study were as follows: (1) To the best of our knowledge, this study was one of the few to investigate the occurrence and distribution of antibiotics in mariculture environments along the Yellow Sea coast; (2) Biofilms, a focus of the study, might act as a sink for antibiotics in the aquaculture ecosystem; and (3) The correlation of heavy metals and antibiotic concentrations was proved, which could correspondingly be used as an indicator for antibiotic concentrations in the studied area. The levels of antibiotics in water were observed to be relatively low, at the ng/L level. Trimethoprim was the most prevalent antibiotic, and was detected in all water samples. Oxytetracycline was detected at high concentrations in biofilms (up to 1478.29 ng/g). Moreover, biofilms exhibited a higher antibiotic accumulation capacity compared to sediments. Concentrations of oxytetracycline and doxycycline were high in feed, while other antibiotics were almost undetected. Tetracycline was widely detected and the concentration of enrofloxacin was highest in organisms. Correlation analysis demonstrated that environmental parameters and other coexisting contaminants (e.g. heavy metals) significantly affected antibiotic concentrations. In addition, the concentration of Zn was significantly correlated with the total antibiotic concentration and was proportional to several antibiotics in water and sediment (biofilm) samples (p < 0.01). High Mn concentrations were closely related to total and individual (e.g. sulfadiazine, sulfamethazine and enrofloxacin) antibiotic levels, which may result in the combined contamination of the environment. Antibiotics in estuaries and groundwater generally originated from aquaculture wastewater and untreated/treated domestic sewage. Most of the detected antibiotics posed no risk to the environment. Ciprofloxacin and enrofloxacin found in water may present high ecological and resistance risks, while the two antibiotics observed to accumulate in fish may pose a considerable risk to human health through diet consumption. All antibiotics detected in seafood were lower than the respective maximum residue limits. This study can act as a reference for the government for the determination of antibiotic discharge standards in aquaculture wastewater and the establishment of a standardized antibiotic monitoring and management system.
MeSH term(s)	Animals ; Anti-Bacterial Agents/analysis ; Aquaculture ; China ; Ecosystem ; Environmental Monitoring ; Humans ; Risk Assessment ; Water Pollutants, Chemical/analysis
Chemical Substances	Anti-Bacterial Agents ; Water Pollutants, Chemical
Language	English
Publishing date	2020-03-08
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	554791-x
ISSN	1873-6750 ; 0160-4120
ISSN (online)	1873-6750
ISSN	0160-4120
DOI	10.1016/j.envint.2020.105551
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 3131: Show issues

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Article ; Online: Note: An atomic self-sustaining magnetic gradiometer with a 1/τ uncertainty property based on Larmor precession.

Fan, B L / Wang, S G / Xu, C / Wang, L J

The Review of scientific instruments

2018 Volume 89, Issue 2, Page(s) 26105

Abstract: We demonstrate an atomic magnetic gradiometer based on self-sustaining Larmor precession. By coherent optical pumping, we measure the phase of the Larmor precession directly and observe that the gradiometer shows a 1/τ improvement in magnetic field ... ...

Abstract	We demonstrate an atomic magnetic gradiometer based on self-sustaining Larmor precession. By coherent optical pumping, we measure the phase of the Larmor precession directly and observe that the gradiometer shows a 1/τ improvement in magnetic field gradient uncertainty over time τ. Since the measurement gives frequency signals, the gradiometer can be easily implemented by mixing and filtering the different frequency signals from two adjacent magnetometers. A gradient sensitivity of 186 fT/Hz/cm
Language	English
Publishing date	2018-02
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/1.5003872
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Z 4' 46/112: Show issues

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Article ; Online: High accuracy measurement of the ground-state hyperfine splitting in a

Miao, K / Zhang, J W / Sun, X L / Wang, S G / Zhang, A M / Liang, K / Wang, L J

Optics letters

2021 Volume 46, Issue 20, Page(s) 5207

Abstract: We present an erratum to our Letter [Opt. Lett.40, 4249 (2015)OPLEDP0146-959210.1364/OL.40.004249]. This erratum corrects the nuclear Lande factor gI in Eq. (2). After correcting the error, the final ground-state hyperfine splitting frequency of ... ...

Abstract	We present an erratum to our Letter [Opt. Lett.40, 4249 (2015)OPLEDP0146-959210.1364/OL.40.004249]. This erratum corrects the nuclear Lande factor gI in Eq. (2). After correcting the error, the final ground-state hyperfine splitting frequency of the
Language	English
Publishing date	2021-10-15
Publishing country	United States
Document type	Journal Article
ISSN	1539-4794
ISSN (online)	1539-4794
DOI	10.1364/OL.444407
Database	MEDical Literature Analysis and Retrieval System OnLINE

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