LIVIVO - Search results -

Search results

Result 1 - 10 of total 75

Search options

Article ; Online: Long-term measurements of ground-level ozone in Windsor, Canada and surrounding areas.

Zhang, Tianchu / Xu, Xiaohong / Su, Yushan

2022 Volume 294, Page(s) 133636

Abstract: This study investigated temporal variability of ground-level ozone ( ... ...

Abstract	This study investigated temporal variability of ground-level ozone (O
MeSH term(s)	Air Pollutants/analysis ; Environmental Monitoring ; Ozone/analysis ; Seasons ; Smog/analysis
Chemical Substances	Air Pollutants ; Smog ; Ozone (66H7ZZK23N)
Language	English
Publishing date	2022-01-22
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.2022.133636
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 2540: 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: Long-term measurements of ground-level ozone in Windsor, Canada and surrounding areas

Zhang, Tianchu / Xu, Xiaohong / Su, Yushan

Chemosphere. 2022 May, v. 294

2022

Abstract: This study investigated temporal variability of ground-level ozone (O₃) during smog season in Windsor, Canada and surrounding states of the US during 1996–2015. Cluster analysis classified six sites into two groups with similar features of O₃ ... ...

Abstract	This study investigated temporal variability of ground-level ozone (O₃) during smog season in Windsor, Canada and surrounding states of the US during 1996–2015. Cluster analysis classified six sites into two groups with similar features of O₃ concentrations. The first group consists of four urban/suburban sites, Windsor, Allen Park and Lansing in Michigan, and Erie in Ohio, and the second group includes two rural sites, Delaware and National Trail School in Ohio. The similarities among all six sites include (1) diurnal and seasonal variability of O₃ concentrations owing to similar weather conditions, and (2) decreasing peak O₃ (95ᵗʰ percentile) concentrations due to reduced emissions of precursors, thus less photochemical O₃ formation. However, how O₃ levels changed with reduced NOX emissions during the study period and on weekends differed between the two groups. Lower O₃ concentrations were recorded at urban/suburban sites (30 ppb) than at rural sites (34 ppb). At urban sites, annual smog season O₃ concentrations increased by 0.12–3.2 ppb/year. The increasing trends occurred at all percentile levels except for 95ᵗʰ percentile and in most months, due to weakened NO titration effect. At the rural sites, smog-season O₃ concentrations decreased by 0.01–2.71 ppb/year. The decreasing trends were observed at 50-95ᵗʰ percentile levels and in most months. Between the two groups, the urban/suburban group had a greater increment in weekend O₃ concentrations (3.3 vs. 1.6 ppb) due to a greater reduction of local NO emissions on weekend, thus, weakened NO titration effect. Overall, O₃ formation was more sensitive to VOCs during the study period; however, the O₃ formation regime gradually shifted toward more sensitive to NOX during 1996–2007 then became more sensitive to VOCs during 2008–2015. Therefore, controlling anthropogenic VOC emissions is needed to effectively mitigate O₃ pollution in the study region.
Keywords	cluster analysis ; ozone ; photochemistry ; seasonal variation ; smog pollution ; titration ; weather ; Canada ; Delaware ; Michigan ; Ohio
Language	English
Dates of publication	2022-05
Publishing place	Elsevier Ltd
Document type	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.2022.133636
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Cologne/Königswinter

Zs.A 2540: 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

Details ▾
- See ZB MED holdings
- Order with fees

Book ; Online: PruMUX

Su, Yushan / Murahari, Vishvak / Narasimhan, Karthik / Li, Kai

Augmenting Data Multiplexing with Model Compression

2023

Abstract: As language models increase in size by the day, methods for efficient inference are critical to leveraging their capabilities for various applications. Prior work has investigated techniques like model pruning, knowledge distillation, and data ... ...

Abstract	As language models increase in size by the day, methods for efficient inference are critical to leveraging their capabilities for various applications. Prior work has investigated techniques like model pruning, knowledge distillation, and data multiplexing to increase model throughput without sacrificing accuracy. In this paper, we combine two such methods -- structured pruning and data multiplexing -- to compound the speedup gains obtained by either method. Our approach, PruMUX, obtains up to 7.5-29.5X throughput improvement over BERT-base model with accuracy threshold from 80% to 74%. We further study various combinations of parameters (such as sparsity and multiplexing factor) in the two techniques to provide a comprehensive analysis of the tradeoff between accuracy and throughput in the resulting models. We then propose Auto-PruMUX, a meta-level model that can predict the high-performance parameters for pruning and multiplexing given a desired accuracy loss budget, providing a practical method to leverage the combination effectively. Comment: Findings of the Association for Computational Linguistics (ACL 2023)
Keywords	Computer Science - Machine Learning ; Computer Science - Artificial Intelligence
Publishing date	2023-05-24
Publishing country	us
Document type	Book ; 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: Design and Optimization of a New Anti-reflux Biliary Stent With Retractable Bionic Valve Based on Fluid-Structure Interaction Analysis.

Su, Yushan / Xiang, Zhongxia / Song, Xiaofei / Zheng, Shuxian / Xu, Xinsheng

Frontiers in bioengineering and biotechnology

2022 Volume 10, Page(s) 824207

Abstract: Duodenal biliary reflux has been a challenging common problem which could cause dreadful complications after biliary stent implantation. A novel anti-reflux biliary stent with a retractable bionic valve was proposed according to the concertina motion ... ...

Abstract	Duodenal biliary reflux has been a challenging common problem which could cause dreadful complications after biliary stent implantation. A novel anti-reflux biliary stent with a retractable bionic valve was proposed according to the concertina motion characteristics of annelids. A 2D equivalent fluid-structure interaction (FSI) model based on the axial section was established to analyze and evaluate the mechanical performances of the anti-reflux biliary stent. Based on this model, four key parameters (initial shear modulus of material, thickness, pitch, and width) were selected to investigate the influence of design parameters on anti-reflux performance via an orthogonal design to optimize the stent. The results of FSI analysis showed that the retrograde closure ratio of the retractable valve primarily depended on initial shear modulus of material (
Language	English
Publishing date	2022-03-28
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2719493-0
ISSN	2296-4185
ISSN	2296-4185
DOI	10.3389/fbioe.2022.824207
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Book ; Online: Uptake Behavior of Polycyclic Aromatic Compounds during Field Calibrations of the XAD-Based Passive Air Sampler Across Seasons and Locations

Li, Yuening / Zhan, Faqiang / Su, Yushan / Lei, Ying Duan / Shunthirasingham, Chubashini / Zhou, Zilin / Abbatt, Jonathan P. D. / Hung, Hayley / Wania, Frank

eISSN:

2024

Abstract: Polycyclic aromatic compounds (PACs) continue to demand attention due to their widespread presence and well-established health implications. Given that incomplete combustion is a major contributor to PACs and inhalation constitutes a crucial human ... ...

Abstract	Polycyclic aromatic compounds (PACs) continue to demand attention due to their widespread presence and well-established health implications. Given that incomplete combustion is a major contributor to PACs and inhalation constitutes a crucial human exposure pathway, a comprehensive understanding of the concentrations, spatial distributions, and fates of a broad range of PACs in the atmosphere is important. Passive air samplers (PASs) are a commonly utilized technique for PAC sampling and monitoring. In this study, we present the results from two 1-year calibration experiments, one starting in summer and the other in winter, using a passive air sampler equipped with XAD resin as the sorbent (XAD-PAS). Throughout both experiments, PACs were consistently sorbed during the initial 6-month period. However, the sorbed amounts for many PACs exhibited a decrease after half a year of deployment. Three hypotheses to explain this phenomenon were explored, including the uptake of atmospheric particles, evaporation from the sorbent, and reactions with photo-oxidants. All had to be rejected based on the obtained data, additional laboratory experiments, and model results. Model simulations were further used to (i) confirm that a loss process must be invoked to explain the observed uptake behavior and (ii) estimate the kinetics of that loss process for different PACs. Sampling rates (SRs) for 28 PACs derived from the linearized uptake curves during the first 6 months of deployment were comparable to those of other semi-volatile organic compounds obtained during the same calibration experiment, and they also demonstrate a consistent negative correlation with volatility.
Subject code	910
Language	English
Publishing date	2024-01-29
Publishing country	de
Document type	Book ; 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.

Book ; Online: Uptake behavior of polycyclic aromatic compounds during field calibrations of the XAD-based passive air sampler across seasons and locations

Li, Yuening / Zhan, Faqiang / Su, Yushan / Lei, Ying Duan / Shunthirasingham, Chubashini / Zhou, Zilin / Abbatt, Jonathan P. D. / Hung, Hayley / Wania, Frank

eISSN: 1867-8548

2024

Abstract	Polycyclic aromatic compounds (PACs) continue to demand attention due to their widespread presence and well-established health implications. Given that incomplete combustion is a major contributor to PACs and inhalation constitutes a crucial human exposure pathway, a comprehensive understanding of the concentrations, spatial distributions, and fates of a broad range of PACs in the atmosphere is important. Passive air samplers (PASs) are a commonly utilized technique for PAC sampling and monitoring. In this study, we present the results from two 1-year calibration experiments, one starting in summer and the other in winter, using a passive air sampler equipped with XAD resin as the sorbent (XAD-PAS). Throughout both experiments, PACs were consistently sorbed during the initial 6-month period. However, the sorbed amounts for many PACs exhibited a decrease after half a year of deployment. Three hypotheses to explain this phenomenon were explored, including the uptake of atmospheric particles, evaporation from the sorbent, and reactions with photo-oxidants. All had to be rejected based on the obtained data, additional laboratory experiments, and model results. Model simulations were further used to (i) confirm that a loss process must be invoked to explain the observed uptake behavior and (ii) estimate the kinetics of that loss process for different PACs. Sampling rates (SRs) for 28 PACs derived from the linearized uptake curves during the first 6 months of deployment were comparable to those of other semi-volatile organic compounds obtained during the same calibration experiment, and they also demonstrate a consistent negative correlation with volatility.
Subject code	910
Language	English
Publishing date	2024-01-29
Publishing country	de
Document type	Book ; 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: Design and evaluation of a novel anti-reflux biliary stent with cone spiral valve.

Wang, Yue / Song, Xiao-Fei / Su, Yu-Shan / Xu, Xin-Sheng

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

2020 Volume 235, Issue 1, Page(s) 54–64

Abstract: Endoscopic placement of biliary stent is a well-established palliative treatment for biliary obstruction. However, duodenobiliary reflux after stent placement has been a common problem which may lead to dreadful complications. This paper designed a novel ...

Abstract	Endoscopic placement of biliary stent is a well-established palliative treatment for biliary obstruction. However, duodenobiliary reflux after stent placement has been a common problem which may lead to dreadful complications. This paper designed a novel anti-reflux biliary stent with a cone spiral valve. Fluid-Structure Interaction (FSI) simulations were established to evaluate the efficiency of the anti-reflux stent comparing with a clinically applied standard stent. According to the stress distribution of the valve, the fatigue performance in the stress concentration area was analyzed. The results show that when the antegrade flow through the valve, the cone spiral valve could stretch and open to realize adequate drainage under the normal physiological pressure of biliary tract; When the duodenal reflux through the valve, the valve would be compressed and close with a result of nearly zero at the outlet flow rate. Furthermore, the anti-reflux stent achieved improved radial mechanical performance with 2.7 times higher radial stiffness than standard stent. Finite element analysis (FEA) also indicates that compared with the standard stent, the addition of the anti-reflux valve had little negative effect on flexibility of the stent. Fatigue analysis results showed that the valve was reliable. This research provides the new stent with a cone spiral valve and proves that it is technically feasible and effective for preventing the duodenobiliary reflux while ensuring the antegrade bile flow without compromising the other biomechanical performances.
MeSH term(s)	Biliary Tract ; Cholestasis ; Humans ; Palliative Care ; Stents
Language	English
Publishing date	2020-09-28
Publishing country	England
Document type	Journal Article
ZDB-ID	1065942-0
ISSN	2041-3033 ; 0046-2039 ; 0954-4119
ISSN (online)	2041-3033
ISSN	0046-2039 ; 0954-4119
DOI	10.1177/0954411920959986
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 2652: 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

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: The decisive role of subordination in social hierarchy in weanling mice and young children.

Chou, Yu-Ju / Lu, Yi-Han / Ma, Yu-Kai / Su, Yu-Shan / Kuo, Tsung-Han

iScience

2021 Volume 24, Issue 2, Page(s) 102073

Abstract: Social hierarchy plays important roles in maintaining social structures. Despite similarity in concept, frameworks of human hierarchy have seldom been investigated in parallel with other animals. Moreover, the importance of subordination in hierarchical ... ...

Abstract	Social hierarchy plays important roles in maintaining social structures. Despite similarity in concept, frameworks of human hierarchy have seldom been investigated in parallel with other animals. Moreover, the importance of subordination in hierarchical formation has been largely underestimated in previous research. Here we established, compared, and investigated hierarchy in children and weanling mice. Temperament assessments suggested that children who are less persistent, low emotional intensity, and withdrew easily were more likely to be subordinate in competitive scenarios independent of task characteristics and interaction experiences. The tube test further showed that conflicts between mice were not resolved by winner approach but by loser withdrawal, which was mainly determined by intrinsic subordinate status regardless of opponents. Our study presents evolutionary conserved hierarchical relationships in young and a critical role of the intrinsic subordinate characteristics in hierarchical determination. These findings provide a new perspective on social interactions with potential implications for preschool education.
Language	English
Publishing date	2021-01-19
Publishing country	United States
Document type	Journal Article
ISSN	2589-0042
ISSN (online)	2589-0042
DOI	10.1016/j.isci.2021.102073
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: Short-Term Hyperuricemia Leads to Structural Retinal Changes That Can be Reversed by Serum Uric Acid Lowering Agents in Mice.

Pai, Hung-Liang / Hsieh, Sophie Meng-Tien / Su, Yu-Shan / Sue, Xin-Yuan / Chang, Han-Hsin / Lin, David Pei-Cheng

Investigative ophthalmology & visual science

2022 Volume 63, Issue 10, Page(s) 8

Abstract: Purpose: Metabolic disorders have been implicated in ocular diseases, such as age-related macular degeneration (AMD) and diabetic retinopathy (DR). Recently, hyperuricemia (HUA) has been proposed as another risk factor for AMD, although no cause-and- ... ...

Abstract	Purpose: Metabolic disorders have been implicated in ocular diseases, such as age-related macular degeneration (AMD) and diabetic retinopathy (DR). Recently, hyperuricemia (HUA) has been proposed as another risk factor for AMD, although no cause-and-effect experimental data have been published. In this study, we investigated whether HUA would initiate AMD or related retinal damages in hyperuricemic mice. Methods: HUA was induced in male ICR mice by dietary supplements of uric acid and oxonic acid potassium salt, with or without treatments by allopurinol or benzbromarone for various durations. Serum uric acid and angiotensin II concentrations were measured by enzyme-linked immunosorbent assay (ELISA) at regular intervals. The retinal damages were assessed by hematoxylin and eosin staining, immunostaining, and TUNEL assay. The cause-and-effect of HUA was compared among the study groups. Results: The results showed that the total thickness of photoreceptor inner and outer segments, as well as the thickness of the photoreceptor outer segment alone, were reduced under HUA. Furthermore, HUA elevated serum angiotensin II, which indicated activation of the renin-angiotensin system (RAS), leading to higher matrix metalloproteinase-2 (MMP-2) expression, and glial activation in the ganglion cell layer. HUA also led to the reduction of retinal pigment epithelium gap junction protein connexin-43 and apoptosis. Uric acid lowering agents, allopurinol or benzbromarone, were effective in ameliorating the impairments. Conclusions: HUA may pose as a causative factor of retinal injuries. The reduction of serum uric acid may reduce the detrimental effects caused by HUA.
MeSH term(s)	Allopurinol/pharmacology ; Angiotensin II ; Animals ; Benzbromarone/pharmacology ; Hyperuricemia/drug therapy ; Macular Degeneration/complications ; Male ; Matrix Metalloproteinase 2 ; Mice ; Mice, Inbred ICR ; Uric Acid
Chemical Substances	Angiotensin II (11128-99-7) ; Uric Acid (268B43MJ25) ; Benzbromarone (4POG0RL69O) ; Allopurinol (63CZ7GJN5I) ; Matrix Metalloproteinase 2 (EC 3.4.24.24)
Language	English
Publishing date	2022-09-13
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	391794-0
ISSN	1552-5783 ; 0146-0404
ISSN (online)	1552-5783
ISSN	0146-0404
DOI	10.1167/iovs.63.10.8
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 45: 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: Nucleon Transversity Distribution in the Continuum and Physical Mass Limit from Lattice QCD.

Yao, Fei / Walter, Lisa / Chen, Jiunn-Wei / Hua, Jun / Ji, Xiangdong / Jin, Luchang / Lahrtz, Sebastian / Ma, Lingquan / Mohanta, Protick / Schäfer, Andreas / Shu, Hai-Tao / Su, Yushan / Sun, Peng / Xiong, Xiaonu / Yang, Yi-Bo / Zhang, Jian-Hui

Physical review letters

2024 Volume 131, Issue 26, Page(s) 261901

Abstract: We report a state-of-the-art lattice QCD calculation of the isovector quark transversity distribution of the proton in the continuum and physical mass limit using large-momentum effective theory. The calculation is done at four lattice spacings a={0.098, ... ...

Abstract	We report a state-of-the-art lattice QCD calculation of the isovector quark transversity distribution of the proton in the continuum and physical mass limit using large-momentum effective theory. The calculation is done at four lattice spacings a={0.098,0.085,0.064,0.049} fm and various pion masses ranging between 220 and 350 MeV, with proton momenta up to 2.8 GeV. The result is nonperturbatively renormalized in the hybrid scheme with self-renormalization, which treats the infrared physics at large correlation distance properly, and extrapolated to the continuum, physical mass, and infinite momentum limit. We also compare with recent global analyses for the nucleon isovector quark transversity distribution.
Language	English
Publishing date	2024-01-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.261901
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Bonn / Germany

Z 4' 58/153: 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

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

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

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

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED