LIVIVO - Search results -

Search results

Result 1 - 10 of total 30

Search options

Article ; Online: Exposure to concentrated ambient PM2.5 (CAPM) induces intestinal disturbance via inflammation and alternation of gut microbiome

Shanshan Xie / Caihong Zhang / Jinzhuo Zhao / Dan Li / Jianmin Chen

Environment International, Vol 161, Iss , Pp 107138- (2022)

2022

Abstract: Air pollution causes a great disease burden worldwide. Recent evidences suggested that PM2.5 contributes to intestinal disease. The objective of present study was to investigate the influence of ambient PM2.5 on intestinal tissue and microbiome via whole- ...

Abstract	Air pollution causes a great disease burden worldwide. Recent evidences suggested that PM2.5 contributes to intestinal disease. The objective of present study was to investigate the influence of ambient PM2.5 on intestinal tissue and microbiome via whole-body inhalation exposure. The results showed that high levels and prolonged periods exposure to concentrated ambient PM2.5 (CAPM) could destroy the mucous layer of the colon, and significantly alter the mRNA expression of tight junction (Occludin and ZO-1) and inflammation-related (IL-6, IL-10 and IL-1β) genes in the colon, comparing with exposure to the filtered air (FA). The composition of intestinal microbiome at the phylum and genus levels also varied along with the exposure time and PM2.5 levels. At the phylum level, Bacteroidetes was greatly decreased, while Proteobacteria was increased after exposure to CAPM, comparing with exposure to FA. At the genus level, Clostridium XlVa, Akkermansia and Acetatifactor, were significantly elevated exposure to CAPM, comparing with exposure to FA. Our results also indicated that high levels and prolonged periods exposure to CAPM altered metabolic functional pathways. The correlation analysis showed that the intestinal inflammation was related to the alteration of gut microbiome induced by CAPM exposure, which may be a potential mechanism that elucidates PM2.5-induced intestinal diseases. These results extend our knowledge on the toxicology and health effects of ambient PM2.5.
Keywords	Inhalation exposure ; Ambient PM2.5 ; Inflammation ; Intestinal microbiome ; Correlations ; Environmental sciences ; GE1-350
Subject code	333
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	Elsevier
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: A Facile Fabrication of ZnFe2O4/Sepiolite Composite with Excellent Photocatalytic Performance on the Removal of Tetracycline Hydrochloride

Caihong Zhang / Xiaoyu Han / Fei Wang / Lijuan Wang / Jinsheng Liang

Frontiers in Chemistry, Vol

2021 Volume 9

Abstract: The excellent photo-response of ZnFe2O4 in the visible light region makes it a promising catalyst, whereas some defects like serious particle agglomeration and easy recombination of photo-generated electron-hole pairs hinder its application. In this work, ...

Abstract	The excellent photo-response of ZnFe2O4 in the visible light region makes it a promising catalyst, whereas some defects like serious particle agglomeration and easy recombination of photo-generated electron-hole pairs hinder its application. In this work, the ZnFe2O4/sepiolite (ZF-Sep) composites were synthesized using a co-precipitation method. The obtained ZF-Sep composites were characterized by XRD, SEM, TEM, FT-IR, XPS, BET, VSM and DRS. Moreover, the photocatalytic performance was evaluated by the tetracycline hydrochloride removal efficiency under simulated visible light illumination. The results displayed that the ZnFe2O4 with average sizes about 20 nm were highly dispersed on sepiolite nanofibers. All the composites exhibited better photocatalytic performance than pure ZnFe2O4 due to the synergistic effect of the improvement on the agglomeration phenomenon of ZnFe2O4 and the reduction on the recombination rate of photo-generated electrons and holes. The optimum removal efficiency was that of the ZF-Sep-11 composite, which reached 93.6% within 3 h. Besides, the composite exhibited an excellent stability and reusability. Therefore, ZF-Sep composite is a promising catalyst for the treatment of wastewater contained antibiotics.
Keywords	sepiolite nanofibers ; ZnFe2O4 ; co-precipitation ; photocatalytic ; tetracycline hydrochloride ; Chemistry ; QD1-999
Subject code	620
Language	English
Publishing date	2021-08-01T00:00:00Z
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: Impact of Government Stability and Investment Profile on Forest Area

Sha Qiao / Caihong Zhang / Lizeth Cuesta / Rafael Alvarado / Stefania Pinzón / Diana Bravo-Benavides

Sustainability, Vol 14, Iss 4395, p

The Role of Natural Protected Areas

2022 Volume 4395

Abstract: Forest area plays a fundamental role in air and water quality and directly impacts agricultural productivity. This research aims to examine the impact of government stability and investment profiles on forest cover in countries within the ASEAN region. ... ...

Abstract	Forest area plays a fundamental role in air and water quality and directly impacts agricultural productivity. This research aims to examine the impact of government stability and investment profiles on forest cover in countries within the ASEAN region. Specifically, the research includes Brunei Darussalam, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam. In the research development, we examine the role which protected natural areas play in the conservation of forests. We employ second-generation cointegration methods of cross-section dependence and slope heterogeneity. The results suggest that forest cover has been significantly reduced in this region, while government stability and the investment profile have a volatile behavior. The second-generation cointegration test results suggest there is no long-term relationship between the three series. Likewise, the short- and long-term elasticities highlight the importance of environmental protection policies to conserve forests.
Keywords	forest area ; government stability ; investment profile ; fully modified ordinary least squares (FMOLS) ; augmented mean group estimator (AMG) ; common correlated effects mean group estimator (CCE-MG) ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	333
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: Diagnosis of Liver Cirrhosis and Liver Fibrosis by Artificial Intelligence Algorithm-Based Multislice Spiral Computed Tomography

Liexiu Wu / Bo Ning / Jianjun Yang / Yanni Chen / Caihong Zhang / Yun Yan

Computational and Mathematical Methods in Medicine, Vol

2022 Volume 2022

Abstract: This research was aimed at investigating the artificial intelligence (AI) segmentation algorithm-based multislice spiral computed tomography (MSCT) in the diagnosis of liver cirrhosis and liver fibrosis. Besides, it was aimed at providing new methods for ...

Abstract	This research was aimed at investigating the artificial intelligence (AI) segmentation algorithm-based multislice spiral computed tomography (MSCT) in the diagnosis of liver cirrhosis and liver fibrosis. Besides, it was aimed at providing new methods for the diagnosis of liver cirrhosis and liver fibrosis. All patients were divided into the control group, mild liver fibrosis group, and significant liver fibrosis group. A total of 112 patients were included, with 40 cases in the mild liver fibrosis group, 48 cases in the significant liver fibrosis group, and 24 cases who underwent computed tomography (CT) examination in the control group. In the research, deconvolution algorithm of AI segmentation algorithm was adopted to process the images. The average hepatic arterial fraction (HAF) values of patients in the control group, mild liver fibrosis group, and severe liver fibrosis group were 17.59±10.03%, 18.23±5.57%, and 20.98±6.63%, respectively. The average MTT values of patients in the control group, mild liver fibrosis group, and severe liver fibrosis group were 12.69±1.78S, 12.53±2.05S, and 12.04±1.57S, respectively. The average blood flow (BF) values of patients in the control group, mild liver fibrosis group, and severe liver fibrosis group were 105.68±15.57 mL 100 g-1·min-1, 116.07±16.5 mL·100 g-1·min-1, and 110.39±16.32 mL·100 g-1·min-1, respectively. Besides, the average blood volume (BV) values of patients in the control group, mild liver fibrosis group, and significant liver fibrosis group were 15.69±4.35 mL·log-1, 16.97±2.68 mL·log-1, and 16.11±4.87 mL·100 g-1, respectively. According to statistics, the differences among the average HAF, MTT, BF, and BV values showed no statistical meaning. AI segmentation algorithm-based MSCT imaging could promote the diagnosis of liver cirrhosis and liver fibrosis effectively and offer new methods to clinical diagnosis of liver cirrhosis and liver fibrosis.
Keywords	Computer applications to medicine. Medical informatics ; R858-859.7
Subject code	610
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	Hindawi Limited
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: Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Xiaoyu Han / Hong Zhang / Caihong Zhang / Yan Zhao / Na Zhang / Jinsheng Liang

Frontiers in Chemistry, Vol

2021 Volume 9

Abstract: The heavy use of antibiotics in medicine, stock farming and agriculture production has led to their gradual accumulation in environmental media, which poses a serious threat to ecological environment and human safety. As an efficient and promising ... ...

Abstract	The heavy use of antibiotics in medicine, stock farming and agriculture production has led to their gradual accumulation in environmental media, which poses a serious threat to ecological environment and human safety. As an efficient and promising catalyst for the degradation of antibiotics, nanoscale zero valent iron (nZVI) has attracted increasing attention in recent years. In this study, sepiolite nanofiber supported zero valent iron (nZVI/SEP) composite was prepared via a facile and environmentally friendly method. The nZVI particles (with size of 20–60 nm) were dispersed evenly on the surface of sepiolite nanofibers, and the catalytic performance for the removal of tetracycline hydrochloride (TC-HCl) in aqueous system was investigated. The effect of nZVI loading amount, catalyst dosage, H2O2 concentration and pH on the removal efficiency of TC-HCl were studied. It was revealed that the sepiolite supporter effectively inhibited the agglomeration of nZVI particles and increased the contact area between contaminant and the active sites, resulting in the higher catalytic performance than pure nZVI material. The TC-HCl removal efficiency of nZVI/SEP composite was up to 92.67% when TC-HCl concentration of 20 mg/L, catalyst dosage of 1.0 g/L, H2O2 concentration of 1.0 mM, pH value of 7. Therefore, the nZVI/SEP composites possess high catalytic activity for TC-HCl removal and have great application prospects in antibiotic wastewater treatment.
Keywords	sepiolite ; nanoscale zero valent iron ; green synthesis ; catalytic performance ; antibiotic degradation ; Chemistry ; QD1-999
Subject code	540
Language	English
Publishing date	2021-09-01T00:00:00Z
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: Analysis of the strategies used by iranian nurses for management of provided care for patients with COVID- 19: a qualitative study.

Varaei, Shokoh / Caihong, Zhang / Siqi, Zhang / Mahmoodi, Parvin / Rezaee, Mehdi / Rezveh, Ali Karimi / Mirbazegh, Seydeh Fatemeh

BMC nursing

2023 Volume 22, Issue 1, Page(s) 93

Abstract: Background: Nurses have been at the center of managing the COVID-19 outbreak through direct bedside care in respiratory, emergency and intensive care environments, managing hospital units, providing Covid-19 testing, vaccination and contact tracing. ... ...

Abstract	Background: Nurses have been at the center of managing the COVID-19 outbreak through direct bedside care in respiratory, emergency and intensive care environments, managing hospital units, providing Covid-19 testing, vaccination and contact tracing. Thus, the present study aimed to analysis the strategies used by Iranian nurses for management of Provided Care for patients with COVID- 19. Methods: The present study was conducted based on the conventional content analysis method and Graneheim & Lundman approach. The participants included the nurses working in the COVID-19 wards and were recruited by purposeful sampling and based on inclusion criteria. The data were collected by conducting semi-structured, in-depth, one-to-one interviews until reaching data saturation. Results: In-depth interviews with 10 nurses represented four main categories and fifteen subcategories. Four main categories emerged in this study i.e. "justice in human resources management", "The art and science of comprehensive nursing care", "managers as agents of change in crisis" and "challenges and its management". Conclusion: The nurses' experiences of management strategies showed that paying attention to the financial, psychological, educational, equipment needs of nurses and maintaining their safety make the suitable environment for providing high quality care for patients with covid-19.
Language	English
Publishing date	2023-03-31
Publishing country	England
Document type	Journal Article
ZDB-ID	2091496-9
ISSN	1472-6955
ISSN	1472-6955
DOI	10.1186/s12912-023-01239-3
Database	MEDical Literature Analysis and Retrieval System OnLINE

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.

Article ; Online: A Poly(dA:dT) Tract in the IGF1 Gene Is a Genetic Marker for Growth Traits in Pigs

Weili Liao / Yifei Wang / Xiwu Qiao / Xiaoke Zhang / Haohui Deng / Caihong Zhang / Jiaqi Li / Xiaolong Yuan / Hao Zhang

Animals, Vol 12, Iss 3316, p

2022 Volume 3316

Abstract: Insulin-like growth factor 1 ( IGF1 ) is an important regulator of body growth, development, and metabolism. The poly(dA:dT) tract affects the accessibility of transcription factor binding sites to regulate transcription. Therefore, this study assessed ... ...

Abstract	Insulin-like growth factor 1 ( IGF1 ) is an important regulator of body growth, development, and metabolism. The poly(dA:dT) tract affects the accessibility of transcription factor binding sites to regulate transcription. Therefore, this study assessed the effects of two poly(dA:dT) tracts on the transcriptional activity of porcine IGF1 . The luciferase assay results demonstrated that the poly(dA:dT) tract 2 (−264/−255) was a positive regulatory element for IGF1 gene expression, and the activities between the different lengths of the poly(dA:dT) tract 2 were significant ( <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>p</mi><mo><</mo><mn>0.01</mn></mrow></semantics></math> ). The transcription factor C/EBPα inhibited the transcription of IGF1 by binding to tract 2, and the expression levels between the lengths of tract 2 after C/EBPα binding were also statistically different ( <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>p</mi><mo><</mo><mn>0.01</mn></mrow></semantics></math> ). Only the alleles 10T and 11T were found in the tract 2 in commercial pig breeds, while the 9T, 10T, and 11T alleles were found in Chinese native pig breeds. The allele frequencies were in Hardy–Weinberg equilibrium in all pig breeds. The genotypes of tract 2 were significantly associated with the growth traits (days to 115 kg and average daily gain) ( <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>p</mi><mo><</mo><mn>0.05</mn></mrow></semantics></math> ) in commercial pig breeds. Based on these findings, it can be concluded that the tract 2 mutation could be applied as a candidate genetic marker for growth trait selection in pig breeding programs.
Keywords	IGF1 ; luciferase assay ; transcription regulation ; poly(dA:dT) tracts ; Veterinary medicine ; SF600-1100 ; Zoology ; QL1-991
Subject code	630
Language	English
Publishing date	2022-11-01T00:00:00Z
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: The use of Kumpfer’s resilience framework in understanding the breastfeeding experience of employed mothers after returning to work

Honghua Guo / Rong Zhou / Minxiang Li / Siqi Zhang / Huanying Yi / Linjie Wang / Tong Li / Caihong Zhang / Hong Lu

International Breastfeeding Journal, Vol 17, Iss 1, Pp 1-

a qualitative study in China

2022 Volume 15

Abstract: Abstract Background The increasing numbers of women in the workforce is an inevitable trend in China. More and more employed women stop breastfeeding because of working stressors. Many mothers, however, overcome the challenges and insist on breastfeeding ...

Abstract	Abstract Background The increasing numbers of women in the workforce is an inevitable trend in China. More and more employed women stop breastfeeding because of working stressors. Many mothers, however, overcome the challenges and insist on breastfeeding after returning to work. Their individual experience of breastfeeding may provide a new insight to promote and support breastfeeding on employed mothers. This study sought to understand mothers’ experience with insisting on breastfeeding after returning to work based on Kumpfer’s Resilience Framework in Chinese context. Methods This qualitative study was designed with semi-structured interviews. Purposive sampling and snowball sampling were employed to recruit 13 full-time working mothers with a stable job in the public sector who continued to breastfeed for 1 month or longer after returning to work in Haikou, Hainan Province, China. Interviews were conducted from January to March 2020 to capture participants’ experiences of breastfeed after returning to work. Grounded theory and Kumpfer’s Resilience Framework were used to analyze data via a systematic and iterative process. Results Employed mothers built resilience while continuing to breastfeed after returning to work. The core concept was "dynamic interaction". Other categories were the background and explanation of this phenomenon. For working mothers who continued to breastfeed, resilience involved "dynamic interaction", which started from "experiencing stressors" and "obtaining support", two environmental factors interacted with the individual to "build resilience qualities", which interact with environment led to “behavioral resilience”. And then the ongoing dynamic interaction between behavioral resilience and environment ultimately led to three different "weaning processes", including natural weaning, active weaning, and forced weaning. Conclusions This study identified the framework of resilience in mothers who were in the adversity of breastfeeding after returning to work based on Kumpfer’s Resilience ...
Keywords	Continuing to breastfeed ; Employed mothers ; Returning to work ; Kumpfer’s Resilience Framework ; China ; Qualitative study ; Pediatrics ; RJ1-570 ; Public aspects of medicine ; RA1-1270
Subject code	300
Language	English
Publishing date	2022-02-01T00:00:00Z
Publisher	BMC
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: Skeletal Muscle Fibers Inspired Polymeric Actuator by Assembly of Triblock Polymers

Weijie Wang / Xian Xu / Caihong Zhang / Hao Huang / Liping Zhu / Kan Yue / Meifang Zhu / Shuguang Yang

Advanced Science, Vol 9, Iss 13, Pp n/a-n/a (2022)

2022

Abstract: Abstract Inspired by the striated structure of skeletal muscle fibers, a polymeric actuator by assembling two symmetric triblock copolymers, namely, polystyrene‐b‐poly(acrylic acid)‐b‐polystyrene (SAS) and polystyrene‐b‐poly(ethylene oxide)‐b‐polystyrene ...

Abstract	Abstract Inspired by the striated structure of skeletal muscle fibers, a polymeric actuator by assembling two symmetric triblock copolymers, namely, polystyrene‐b‐poly(acrylic acid)‐b‐polystyrene (SAS) and polystyrene‐b‐poly(ethylene oxide)‐b‐polystyrene (SES) is developed. Owing to the microphase separation of the triblock copolymers and hydrogen‐bonding complexation of their middle segments, the SAS/SES assembly forms a lamellar structure with alternating vitrified S and hydrogen‐bonded A/E association layers. The SAS/SES strip can be actuated and operate in response to environmental pH. The contraction ratio and working density of the SAS/SES actuator are approximately 50% and 90 kJ m−3, respectively; these values are higher than those of skeletal muscle fibers. In addition, the SAS/SES actuator shows a “catch‐state”, that is, it can maintain force without energy consumption, which is a feature of mollusc muscle but not skeletal muscle. This study provides a biomimetic approach for the development of artificial polymeric actuators with outstanding performance.
Keywords	actuation ; hydrogen‐bonding complexation ; microphase separation ; pH responsive ; triblock copolymers ; Science ; Q
Subject code	540
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Wiley
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: Livelihood Improvement through Agroforestry Compared to Conventional Farming System: Evidence from Northern Irrigated Plain, Pakistan

Ahmad, Shahzad / Caihong, Zhang / Ekanayake, E. M. B. P.

Land. 2021 June 17, v. 10, no. 6

2021

Abstract: The concept of sustainable livelihood garnered a prominent status in humanitarian and international development organizations that aim to calculate and build a livelihood for agroforestry farmers. However, it is difficult to measure and analyze as well ... ...

Abstract	The concept of sustainable livelihood garnered a prominent status in humanitarian and international development organizations that aim to calculate and build a livelihood for agroforestry farmers. However, it is difficult to measure and analyze as well as visualize the data of livelihood improvement from agroforestry (AF). This paper comparatively assessed 400 smallholder farmers’ livelihood through AF and conventional farming (CF) systems in the Northern Irrigated Plain of Pakistan. The findings showed that AF has a mixed impact on farmers’ livelihood capital, including human, physical, natural, financial and social capital. Specifically, AF significantly improved financial capital in terms of timber, non-timber and fuel wood income. Furthermore, the physical capital (buffalo plough, generators and sprinklers), natural capital (the extent of cultivated land and land ownership; the number of households (HHs) growing vegetables, fruit crops and medicinal crops) and social capital (the number of social groups that HHs involved and number of HHs sharing crop seeds) of AF farmer HHs were significantly improved compared to those of CF farmers. However, the results show that financial capital gain through crop income, HHs owning high-value vehicles (tractors) and farmers trust and collective activities were significantly higher in CF farmers than AF ones. Therefore, to enhance the contribution of AF to rural livelihood, advanced extension services and government involvement on research planning and implementing are needed.
Keywords	agricultural land ; agroforestry ; buffaloes ; farmers ; fruits ; fuelwood ; humans ; income ; irrigation ; land ownership ; livelihood ; natural capital ; social capital ; Pakistan
Language	English
Dates of publication	2021-0617
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land10060645
Database	NAL-Catalogue (AGRICOLA)

Order via subito

To top

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

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

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

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito