LIVIVO - Search results -

Search results

Result 1 - 10 of total 26632

Search options

Article ; Online: Analysis of Individualized Silicone Rubber Bolus Using Fan Beam Computed Tomography in Postmastectomy Radiotherapy: A Dosimetric Evaluation and Skin Acute Radiation Dermatitis Survey.

Chen, Xue-Mei / Xu, Chen-di / Zeng, Li-Ping / Huang, Xiao-Tong / Chen, Ao-Qiang / Liu, Lu / Lin, Liu-Wen / Jia, Le-Cheng / Li, Hua / Jiang, Xiao-Bo

Technology in cancer research & treatment

2024 Volume 23, Page(s) 15330338241229367

Abstract: Objective: ...

Abstract	Objective:
MeSH term(s)	Humans ; Female ; Breast Neoplasms/radiotherapy ; Breast Neoplasms/surgery ; Silicone Elastomers ; Radiotherapy Planning, Computer-Assisted/methods ; Radiotherapy Dosage ; Retrospective Studies ; Reproducibility of Results ; Mastectomy/adverse effects ; Radiotherapy, Intensity-Modulated/adverse effects ; Radiotherapy, Intensity-Modulated/methods ; Tomography, X-Ray Computed ; Dermatitis/surgery ; Organs at Risk/radiation effects
Chemical Substances	Silicone Elastomers
Language	English
Publishing date	2024-02-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	2146365-7
ISSN	1533-0338 ; 1533-0346
ISSN (online)	1533-0338
ISSN	1533-0346
DOI	10.1177/15330338241229367
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 5871: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Experimental study on the atomization characteristics and dust removal efficiency of a fan-shaped nozzle for purifying working environment.

Xie, Zhuwei / Zhao, Zhongtai / Li, Dingfu / Li, Fei / Zhang, Chaojun / Huang, Chen / Xiao, Yimin

The Science of the total environment

2023 Volume 894, Page(s) 164994

Abstract: ... of a spray system, especially for fan-shaped nozzles with large atomization angle. To solve this inadequacy ... of atomization parameters of a fan-shaped pressure atomization nozzle using a 3D Fiber Phase-Doppler Anemometer ...

Abstract	The inadequacy of the existing research in characterizing the atomization performance of the whole atomization field by the local region at nozzle axis hinders the improvement of dust removal performance of a spray system, especially for fan-shaped nozzles with large atomization angle. To solve this inadequacy, 88 measuring points were designed in this study to reveal the spatial distribution characteristics of atomization parameters of a fan-shaped pressure atomization nozzle using a 3D Fiber Phase-Doppler Anemometer. Moreover, the atomization performance and dust removal performance of the whole atomization field under different spray pressures were characterized. The results showed that the spatial distribution of atomization parameters in the axis and radial direction of the nozzle was inhomogeneous. As the axial distance from the nozzle outlet increased, the average droplet size showed a trend of first decreasing and then increasing, the proportion of the droplet of 15-70 μm showed a trend of first increasing and then decreasing, while the average droplet velocity and droplet flux showed a decreasing trend. In addition, the spray orientation was perpendicular to gravity, and the atomization field was parallel to gravity, resulting in a significant difference in the average droplet size between the upper region and the axis. Compared with the upper and lower regions, the atomization effect at the axis was superior, manifested by higher average droplet velocity and droplet flux, indicating that characterizing nozzle atomization performance with atomization parameters at the axis will lead to overestimation. The increase of spray pressure can improve atomization performance and dust removal efficiency to a certain extent, but the improvement effect had a limit. The atomization field can be divided into atomization region, expansion region and contraction region, and the expansion region was considered as an effective dust removal region. These findings provide reference for the design and operation of a spray system.
Language	English
Publishing date	2023-06-17
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.164994
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 949: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Experimental study on the atomization characteristics and dust removal efficiency of a fan-shaped nozzle for purifying working environment

Xie, Zhuwei / Zhao, Zhongtai / Li, Dingfu / Li, Fei / Zhang, Chaojun / Huang, Chen / Xiao, Yimin

Science of the Total Environment. 2023 Oct., v. 894 p.164994-

2023

Abstract	The inadequacy of the existing research in characterizing the atomization performance of the whole atomization field by the local region at nozzle axis hinders the improvement of dust removal performance of a spray system, especially for fan-shaped nozzles with large atomization angle. To solve this inadequacy, 88 measuring points were designed in this study to reveal the spatial distribution characteristics of atomization parameters of a fan-shaped pressure atomization nozzle using a 3D Fiber Phase-Doppler Anemometer. Moreover, the atomization performance and dust removal performance of the whole atomization field under different spray pressures were characterized. The results showed that the spatial distribution of atomization parameters in the axis and radial direction of the nozzle was inhomogeneous. As the axial distance from the nozzle outlet increased, the average droplet size showed a trend of first decreasing and then increasing, the proportion of the droplet of 15-70 μm showed a trend of first increasing and then decreasing, while the average droplet velocity and droplet flux showed a decreasing trend. In addition, the spray orientation was perpendicular to gravity, and the atomization field was parallel to gravity, resulting in a significant difference in the average droplet size between the upper region and the axis. Compared with the upper and lower regions, the atomization effect at the axis was superior, manifested by higher average droplet velocity and droplet flux, indicating that characterizing nozzle atomization performance with atomization parameters at the axis will lead to overestimation. The increase of spray pressure can improve atomization performance and dust removal efficiency to a certain extent, but the improvement effect had a limit. The atomization field can be divided into atomization region, expansion region and contraction region, and the expansion region was considered as an effective dust removal region. These findings provide reference for the design and operation of a spray system.
Keywords	atomization ; droplet size ; droplets ; dust ; environment ; gravity ; Atomization characteristic ; Fan-shaped nozzle ; Phase-Doppler Anemometer ; Spray dust removal ; Dust removal efficiency
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.164994
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 74/341: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Gaussian soft control-based quantum fan-out gate in ground-state manifolds of neutral atoms.

Yin, Hong-Da / Shao, Xiao-Qiang

Optics letters

2021 Volume 46, Issue 10, Page(s) 2541–2544

Abstract: We propose a reliable scheme for one-step synthesizing of a quantum fan-out gate in a system ... fan-out gate, we discuss in detail the preparation of multipartite Greenberger-Horne-Zeilinger (GHZ ...

Abstract	We propose a reliable scheme for one-step synthesizing of a quantum fan-out gate in a system of neutral atoms. By introducing the off-resonant driving fields with Gaussian temporal modulation, the dynamics of the system is strictly restricted to the ground-state subspace on the basis of unconventional Rydberg pumping, which exhibits more robustness than the constant driving method against the fluctuation of system parameters, such as operating time and environment noise. As a direct application of this quantum fan-out gate, we discuss in detail the preparation of multipartite Greenberger-Horne-Zeilinger (GHZ) state for neutral atoms. The result shows that a high fidelity better than 99% can be obtained within the state-of-the-art experiments.
Language	English
Publishing date	2021-04-14
Publishing country	United States
Document type	Journal Article
ISSN	1539-4794
ISSN (online)	1539-4794
DOI	10.1364/OL.424469
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Investigating sources, driving forces and potential health risks of nitrate and fluoride in groundwater of a typical alluvial fan plain.

Xiao, Yong / Hao, Qichen / Zhang, Yunhui / Zhu, Yuchen / Yin, Shiyang / Qin, Limao / Li, Xiaohan

The Science of the total environment

2021 Volume 802, Page(s) 149909

Abstract	Groundwater of alluvial fan plains is the foremost water source, especially in arid/semiarid regions. Its contaminants are big issues for water supply and public health concern. To reveal the groundwater chemistry, contaminants sources and health threats in alluvial aquifers, 81 groundwaters were collected from a typical alluvial fan plain of northern China for nitrogen, fluoride and major ions analysis. Statistical analysis and hydrochemical diagrams as well as human health risk assessment were performed. Nitrate is widely distributed and 53% of groundwaters exceed the permissible limit with the maximum concentration up to 326 mg/L. The distributions of nitrite, ammonia and fluoride contaminants are sporadic in spatial, and the concentrations of fluoride in groundwaters are slightly beyond the permissible limit of 1 mg/L. The hydrochemical facies shift from HCO
MeSH term(s)	Environmental Monitoring ; Fluorides/analysis ; Groundwater ; Humans ; Nitrates/analysis ; Water Pollutants, Chemical/analysis
Chemical Substances	Nitrates ; Water Pollutants, Chemical ; Fluorides (Q80VPU408O)
Language	English
Publishing date	2021-08-27
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.149909
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 949: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Factors influencing surface water and groundwater interaction in alluvial fan

Fanao Meng / Changlai Xiao / Xiujuan Liang / Ge Wang / Ying Sun / Dongxin Guo

Journal of Water and Climate Change, Vol 12, Iss 3, Pp 679-

2021 Volume 695

Abstract: ... surface water and groundwater (SGW) in the Taoer River alluvial fan in Jilin Province, China, from 1956 to 2014 ... were the key factors affecting the SGW interaction, and sand–gravel exposure in the fan was more ... alluvial fan were calculated from 1956 to 2014.; They are influencing factors of the interaction between ...

Abstract	In this study, the surface water balance method was used to calculate the interaction between surface water and groundwater (SGW) in the Taoer River alluvial fan in Jilin Province, China, from 1956 to 2014. The automatic linear model was used to determine the key and non-key influencing factors, and correlation analysis was performed to evaluate their relationship with one another. River runoff and groundwater level were the key factors affecting the SGW interaction, and sand–gravel exposure in the fan was more conducive to SGW interaction. There was a positive correlation between runoff and SGW interaction, and the relationship between the groundwater and surface water levels was correlated and affected by groundwater exploitation and groundwater runoff. Groundwater exploitation and evaporation and precipitation indirectly influenced the SGW interaction by affecting the groundwater level and river runoff key factors, respectively, and were considered non-key factors. HIGHLIGHTS The annual and monthly interactions of the Taoer River alluvial fan were calculated from 1956 to 2014.; They are influencing factors of the interaction between surface water and groundwater (SGW).; The influencing factors of SGW transformation are analyzed and classified.; The stability factor affecting SGW interaction is riverbed lithology.; The key factors affecting SGW interaction are river runoff and groundwater level.;
Keywords	alluvial fan ; correlation analysis ; influencing factors ; sgw interaction ; taoer river ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350
Subject code	550 ; 333
Language	English
Publishing date	2021-05-01T00:00:00Z
Publisher	IWA Publishing
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article: Investigating sources, driving forces and potential health risks of nitrate and fluoride in groundwater of a typical alluvial fan plain

Xiao, Yong / Hao, Qichen / Zhang, Yunhui / Zhu, Yuchen / Yin, Shiyang / Qin, Limao / Li, Xiaohan

Science of the total environment. 2022 Jan. 01, v. 802

2022

Abstract: Groundwater of alluvial fan plains is the foremost water source, especially in arid/semiarid ... collected from a typical alluvial fan plain of northern China for nitrogen, fluoride and major ions analysis ... pathway and should be also concerned.The driving forces of groundwater chemistry in alluvial fan plains ...

Abstract	Groundwater of alluvial fan plains is the foremost water source, especially in arid/semiarid regions. Its contaminants are big issues for water supply and public health concern. To reveal the groundwater chemistry, contaminants sources and health threats in alluvial aquifers, 81 groundwaters were collected from a typical alluvial fan plain of northern China for nitrogen, fluoride and major ions analysis. Statistical analysis and hydrochemical diagrams as well as human health risk assessment were performed. Nitrate is widely distributed and 53% of groundwaters exceed the permissible limit with the maximum concentration up to 326 mg/L. The distributions of nitrite, ammonia and fluoride contaminants are sporadic in spatial, and the concentrations of fluoride in groundwaters are slightly beyond the permissible limit of 1 mg/L. The hydrochemical facies shift from HCO₃-Ca or Mixed HCO₃-Na·Ca type to Mixed Cl-Mg·Ca and ClCa type with the increase of nitrate content. Two factors (Factor-1 and Factor-2) are extracted by factor analysis and account 63% of the total variances. The positive loading of F⁻ and negative loading of NO₃⁻ on Factor-2 reveal geogenic and anthropogenic origins, respectively. The significant positive loadings of TDS, TH, SO₄²⁻, Cl⁻, Ca²⁺, Mg²⁺ on Factor-1 reveal the governing mechanisms on groundwater chemistry by intermixed sources of geogenic origins and anthropogenic inputs. Hydrogeochemical evolution in the study area is driven by both water-rock interaction and anthropogenic forces. Anthropogenic inputs/influences are the dominated forces increasing groundwater nitrate content and salinity in the piedmont zone and the residential and industrial zone of the southeastern lower parts, and would pose potential non-carcinogenic risks to various populations via oral intake pathway. Rational measures should be taken to protect groundwater quality out of the threats of anthropogenic pollution. The geogenic fluoride in groundwater would threat the health of children through oral pathway and should be also concerned.The driving forces of groundwater chemistry in alluvial fan plains were revealed using integrated approach of factor analysis and geostatistical modelling.
Keywords	ammonia ; calcium ; environment ; factor analysis ; fluorides ; geostatistics ; groundwater ; health effects assessments ; human health ; hydrogeochemistry ; nitrates ; nitrites ; nitrogen ; piedmont ; pollution ; public health ; salinity ; water quality ; water supply ; China
Language	English
Dates of publication	2022-0101
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2021.149909
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 74/341: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Dose dependency of aliquot sizes and age models from modern alluvial fan deposits of Helan Mountain, China

Xiuying Liu / Xiao Li / Qiuyue Zhao / Baolin Pan / Junping Wang / Mingjian Wei

Frontiers in Earth Science, Vol

2022 Volume 10

Abstract: Alluvial fan deposits are identified as evidence of regional climatic variations and tectonic ... events; therefore, it is crucial to establish absolute time series by dating alluvial fan deposits ... like sample were collected from the Dashuigou alluvial fan of Helan Mountain, China. The De ...

Abstract	Alluvial fan deposits are identified as evidence of regional climatic variations and tectonic events; therefore, it is crucial to establish absolute time series by dating alluvial fan deposits. Limited exposure to light poses a challenge to accurately estimating the buried ages for alluvial deposits with optically stimulated luminescence (OSL). This challenge has been positively developed by controlling the number of grains on each disk to measure and choosing suitable statistical models for the equivalence dose (De) distribution to analyze. In this research, three modern alluvial samples and one modern loess-like sample were collected from the Dashuigou alluvial fan of Helan Mountain, China. The De distributions of these four samples were studied by the application of small aliquots (1-, 3-, and 5-mm aliquots) of quartz OSL with the average dose model, central age model, unlogged minimum age model (MAM), lowest 5%, internal/external consistency criterion minimum age model (IEU), and finite mixture model. It is concluded that an overestimation of De lower than 1 Gy can be obtained using quartz OSL dating of 1-mm aliquots (∼50 grains) with MAM and IEU for the alluvial sediments. The lowest 5% method may underestimate the De values of the 1-mm aliquots for young samples. This research makes the dose dependency of aliquot sizes and age models more definite and opens up the possibility of dating paleoalluvial deposits to establish a chronological framework to decipher the implications of paleoclimates and tectonics.
Keywords	Aliquot sizes ; Age Models ; Modern deposits ; Alluvial fan ; Quartz OSL dating ; Science ; Q
Subject code	550
Language	English
Publishing date	2022-08-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Multi-Objective Optimization for the Radial Bending and Twisting Law of Axial Fan Blades

Yanyan Ding / Jun Wang / Boyan Jiang / Zhiang Li / Qianhao Xiao / Lanyong Wu / Bochao Xie

Processes, Vol 10, Iss 4, p

2022 Volume 753

Abstract: ... curves. Dendrite Net is then trained to predict the pneumatic performance of the fan. A non dominated ... The performance of low-pressure axial flow fans is directly affected by the three-dimensional ...

Abstract	The performance of low-pressure axial flow fans is directly affected by the three-dimensional bending and twisting of the blades. A new blade design method is adopted in this work, where the radial distribution of blade angle and blade bending angle is composed of standard-form rational quadratic Bézier curves. Dendrite Net is then trained to predict the pneumatic performance of the fan. A non dominated sorting genetic algorithm is employed to solve the global optimization problem of the total pressure coefficient and efficiency. The simulation results show that the optimal blade load distribution along the radial direction becomes uniform, and the suction surface separation vortex and passage vortex are restrained. On the other hand, the tip leakage vortex is enhanced and moves toward the blade leading edge. According to the experimental results, the maximum efficiency increases by 5.44%, and the maximum total pressure coefficient increases by 2.47% after optimization.
Keywords	axial fan ; blade modeling ; bending and twisting ; dendrite net ; multi-objective optimization ; computational fluid dynamics (CFD) ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
Subject code	600
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Modeling and control of a novel facade cleaning robot with four-ducted fan drive

Xiao-Peng Li / Xin Wang / Bin Feng

International Journal of Advanced Robotic Systems, Vol

2021 Volume 18

Abstract: ... in the past few decades. In this article, a novel type of facade cleaning robot based on four-ducted fan is ... and active suction, the powerful suction power of the robot is provided by the four-ducted fan ... Meanwhile, the obstacle-climbing force is caused by the forward of the four-ducted fan that improves ...

Abstract	With the development of modern cities, the demand for cleaning glass curtain walls in urban skyscrapers is increasing, and therefore, many researches on facade cleaning robots have been carried out in the past few decades. In this article, a novel type of facade cleaning robot based on four-ducted fan is proposed. To improve the load capacity of the robot, the lifting and horizontal movement are, respectively, supported by an independent lifting mechanism and a lateral movement mechanism. Unlike the previous passive and active suction, the powerful suction power of the robot is provided by the four-ducted fan. Meanwhile, the obstacle-climbing force is caused by the forward of the four-ducted fan that improves the crossing obstacle ability. In addition, an incremental sliding mode algorithm is applied for controlling the posture when the robot crosses obstacles, which can ensure the stable performance of the cleaning robot under disturbance. Some simulations and experiments are conducted and the results demonstrate the effectiveness and robustness of the designed facade cleaning robot.
Keywords	Electronics ; TK7800-8360 ; Electronic computers. Computer science ; QA75.5-76.95
Subject code	629
Language	English
Publishing date	2021-06-01T00:00:00Z
Publisher	SAGE Publishing
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED