LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1093

Search options

  1. Article ; Online: Extraction, Separation and Purification of Acidic Polysaccharide from Morchella esculenta by High Voltage Pulsed Electric Field

    Chao Liu

    International Journal Bioautomation, Vol 23, Iss 2, Pp 193-

    2019  Volume 202

    Abstract: The intracellular acidic polysaccharide from Morchella esculenta mycelium produced by submerged fermentation is extracted and separated. In the process of extracting the polysaccharide by the high voltage pulsed electric field (HVPEF), heat is not ... ...

    Abstract The intracellular acidic polysaccharide from Morchella esculenta mycelium produced by submerged fermentation is extracted and separated. In the process of extracting the polysaccharide by the high voltage pulsed electric field (HVPEF), heat is not generated and the structure of the polysaccharide is not destroyed. The response surface method is used to investigate the electric field intensity, the pulse number and the liquid-to-material ratio. The optimum extraction process of the acidic polysaccharide is obtained as follows: the electric field intensity is 18 kV/cm, the pulse number is 7 and the liquid-to-material ratio is 27 mL/g. At this time, the polysaccharide yield reaches a maximum value of 56.03 µg/mL. The crude polysaccharide is separated and purified by using DEAE-52 cellulose ion exchange column and Sephadex G-100 to obtain an acidic polysaccharide F1 with high purity. The molecular weight is 1.9895x105 Da. Its functional and structural characteristics need to be further studied.
    Keywords Morchella esculenta ; Intracellular polysaccharide ; High voltage pulsed electric field ; Extraction ; Biology (General) ; QH301-705.5
    Subject code 600
    Language English
    Publishing date 2019-06-01T00:00:00Z
    Publisher Bulgarian Academy of Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Article ; Online: Dissemination of traditional chinese medicine in germany from an intercultural perspective

    Fang- Chao Liu

    Chinese Medicine and Culture, Vol 4, Iss 3, Pp 188-

    A brief introduction of franz hübotter

    2021  Volume 193

    Abstract: Traditional Chinese medicine (TCM) is the cultural heritage of all humankind. TCM not only embodies the cultural crystallization of the region and the nation, but also performs the important mission of curing the lives, saving the sick and maintaining ... ...

    Abstract Traditional Chinese medicine (TCM) is the cultural heritage of all humankind. TCM not only embodies the cultural crystallization of the region and the nation, but also performs the important mission of curing the lives, saving the sick and maintaining the health of the people. In the history of the spread of Chinese medicine to the West, foreign missionaries have played an important role, and researches about this role have continued in China. In the history of Chinese medicine in Germany, there is a pivotal figure named Franz Hübotter (1881–1967), who broke through the deadlock in the academic research of Chinese medicine in the 19th century in Germany, but the discussion on his contribution has been comparatively rare in China. His works and translations are not only of medical value, but are also valuable historically, culturally, and socially. The historical development of TCM has the authenticity of history, the integrity of the environment, and the richness of the times. Medical experts have explored and verified the value of medicine. Translators and scholars are mainly concerned with the dissemination of knowledge from an intercultural perspective. This paper provides a primitive and objective introduction to Franz Hübotter, hoping to trigger off the secondary research among scholars of different professional backgrounds and to expand professional thinking, and then get over the barriers of disciplines.
    Keywords contributions to the knowledge of chinese and tibetan mongolian pharmacology ; franz hübotter ; traditional chinese medicine ; Other systems of medicine ; RZ201-999
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Wolters Kluwer Health/LWW
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article ; Online: Research on the influence of talent ecosystem on firm innovation performance

    Wen Zhang / Chao Liu

    Frontiers in Environmental Science, Vol

    Based on the mediating role of collaborative innovation

    2022  Volume 10

    Abstract: This paper extends previous studies on the organizational innovation by analyzing the impact of talent ecosystem on firm innovation performance in innovative enterprises. In addition, the mediating effect of collaborative innovation on the relationship ... ...

    Abstract This paper extends previous studies on the organizational innovation by analyzing the impact of talent ecosystem on firm innovation performance in innovative enterprises. In addition, the mediating effect of collaborative innovation on the relationship between talent ecosystem and firm innovation performance is analyzed. Grounded in the Resource -Based View (RBV) theory, this paper develops an integrative research model which analyzes those relations using structural equation modeling on a dataset of 176 innovative enterprises. Results suggest that talent competence, organizational environment and regional environment of talent ecosystem have a significant positive impact on collaborative innovation, and organizational environment has a stronger effect on collaborative innovation; talent ecosystem can influence innovation performance to different degrees through the mediating role of collaborative innovation (technology synergy and capability synergy); technology synergy in collaborative innovation positively affects innovation performance, while Technology synergy in collaborative innovation positively affects innovation performance, while capability synergy has no significant effect on innovation performance. The findings of the study provide new ideas for enterprises to improve talent ecosystem and enhance innovation performance.
    Keywords talent ecosystem ; innovation performance ; collaborative innovation ; resource-based view ; China ; Environmental sciences ; GE1-350
    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)

    More links

    Kategorien

  4. Article ; Online: TOC prediction and grading evaluation based on variable coefficient △logR method and its application for unconventional exploration targets in Songliao Basin

    Zhanqing Yu / Shizhong Ma / Chao Liu

    Frontiers in Earth Science, Vol

    2023  Volume 11

    Abstract: The prediction of total organic carbon (TOC) content and grading evaluation of shale formation are very much significant and essential for reservoir description of rolling exploration and development in the new shale exploration area (Shuangcheng) in ... ...

    Abstract The prediction of total organic carbon (TOC) content and grading evaluation of shale formation are very much significant and essential for reservoir description of rolling exploration and development in the new shale exploration area (Shuangcheng) in Songliao basin, China. In order to improve exploration efficiency and obtain continuous TOC content curve of wells, the variable coefficient △logR technique was developed for TOC estimating which is based on the two of acoustic time difference and deep lateral resistivity logging curve and the variable scale coefficient (K) between them as well as another scale coefficient (A) between TOC and △logR. A prediction model of TOC was established for the well which TOC is measured by evaluation of side wall cores, then apply it to other wells to verify the reliability of the model. The application result of eleven exploration Wells in Shuangcheng area show that the TOC of shale is linearly correlated with △logR, and the maximum prediction accuracy k value varies with wells, so it is necessary to determine the undetermined coefficient k according to a single well, but the A value having no big change from one well to another in similar sedimentary facies and thermal evolution degree of shale. The average relative error of TOC between prediction model and core measurement is 10.6% which verifies the accuracy of this method. On this basis of TOC prediction, we establish shale grading evaluation criteria for the study area. In the establishment process, not only the relationship between TOC and S1, but also vitrinite reflectance (Ro) are considered. The shale in Shuangcheng area can be divided into three types (Class I: TOC > 3.5% and Ro > 0.9%; Class II: TOC 2%–3.5% and Ro > 0.9; Class III: TOC < 2% or Ro < 0.9%), and achieved shale classification on the well profile with TOC and Ro which are easy to predict and reliable. According to the relationship between the thickness of shale of disparate classes and the total thickness of shale in different zones, the ...
    Keywords logging ; shale ; TOC ; the grading evaluation ; Songliao Basin ; Science ; Q
    Subject code 550
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: PMG—Pyramidal Multi-Granular Matching for Text-Based Person Re-Identification

    Chao Liu / Jingyi Xue / Zijie Wang / Aichun Zhu

    Applied Sciences, Vol 13, Iss 21, p

    2023  Volume 11876

    Abstract: Given a textual query, text-based person re-identification is supposed to search for the targeted pedestrian images from a large-scale visual database. Due to the inherent heterogeneity between different modalities, it is challenging to measure the cross- ...

    Abstract Given a textual query, text-based person re-identification is supposed to search for the targeted pedestrian images from a large-scale visual database. Due to the inherent heterogeneity between different modalities, it is challenging to measure the cross-modal affinity between visual and textual data. Existing works typically employ single-granular methods to extract local features and align image regions with relevant words/phrases. Nevertheless, the limited robustness of single-granular methods cannot adapt to the imprecision and variances of visual and textual features, which are usually influenced by the background clutter, position transformation, posture diversity, and occlusion in surveillance videos, thereby leading to the deterioration of cross-modal matching accuracy. In this paper, we propose a Pyramidal Multi-Granular matching network (PMG) that incorporates a gradual transition process between the coarsest global information and the finest local information by a coarse-to-fine pyramidal method for multi-granular cross-modal features extraction and affinities learning. For each body part of a pedestrian, PMG is adequate in ensuring the integrity of local information while minimizing the surrounding interference signals at a certain scale and can adapt to capture discriminative signals of different body parts and achieve semantically alignment between image strips with relevant textual descriptions, thus suppressing the variances of feature extraction and improving the robustness of feature matching. Comprehensive experiments are conducted on the CUHK-PEDES and RSTPReid datasets to validate the effectiveness of the proposed method and results show that PMG outperforms state-of-the-art (SOTA) methods significantly and yields competitive accuracy of cross-modal retrieval.
    Keywords text-based person retrieval ; person re-identification ; multi-granular matching ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Subject code 006
    Language English
    Publishing date 2023-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  6. Article ; Online: Imaging reconstruction comparison of different ghost imaging algorithms

    Hong-Chao Liu

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    2020  Volume 8

    Abstract: Abstract As an indirect and computational imaging approach, imaging reconstruction efficiency is critical for ghost imaging (GI). Here, we compare different GI algorithms, including logarithmic GI and exponential GI we proposed, by numerically analysing ... ...

    Abstract Abstract As an indirect and computational imaging approach, imaging reconstruction efficiency is critical for ghost imaging (GI). Here, we compare different GI algorithms, including logarithmic GI and exponential GI we proposed, by numerically analysing their imaging reconstruction efficiency and error tolerance. Simulation results show that compressive GI algorithm has the highest reconstruction efficiency due to its global optimization property. Error tolerance studies further manifest that compressive GI and exponential GI are sensitive to the error ratio. By replacing the bucket input of compressive GI with different bucket object signal functions, we integrate compressive GI with other GI algorithms and discuss their imaging efficiency. With the combination between the differential GI (or normalized GI) and compressive GI, both reconstruction efficiency and error tolerance will present the best performance. Moreover, an optical encryption is proposed by combining logarithmic GI, exponential GI and compressive GI, which can enhance the encryption security based on GI principle.
    Keywords Medicine ; R ; Science ; Q
    Subject code 006
    Language English
    Publishing date 2020-09-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: How do countries along the Maritime Silk Road perform in sustainable use of natural resources? Progress of natural resources-related SDGs

    Yixuan Chen / Chao Liu / Haofeng Li / Xiongzhi Xue

    Ecological Indicators, Vol 149, Iss , Pp 110194- (2023)

    2023  

    Abstract: Depletion of natural resources is one of the obstacles for coastal countries along the 21st Century Maritime Silk Road (MSR) towards Sustainable Development Goals (SDGs). Assessing the performance in sustainable use of natural resources (SUNR) at the ... ...

    Abstract Depletion of natural resources is one of the obstacles for coastal countries along the 21st Century Maritime Silk Road (MSR) towards Sustainable Development Goals (SDGs). Assessing the performance in sustainable use of natural resources (SUNR) at the national level is of great significance for MSR countries to meet the SDGs. However, few studies have evaluated the sustainability of MSR countries regarding resource utilization or measured progress against SDGs from the perspective of natural resources. This paper aims to assess national performance in SUNR by proposing an index system based on SDG 6 (Clean water and sanitation), SDG 7 (Affordable and clean energy), SDG 14 (Life below water), and SDG 15 (Life on land), thereby providing evidence needed for effective resource utilization strategies. Here, the progress of 35 coastal states along the MSR in 2020 is evaluated. Concepts of strong and weak sustainability are introduced, the Constant Elasticity of Substitution (CES) function and Combined Compromise Solution (CoCoSo) method are used for calculation, and the robustness of the proposed index system is validated by uncertainty and sensitivity analysis. Our results show that scores in the weak sustainability scenario are generally higher than those in the strong sustainability scenario. The significant differences in target (SDG) scores between the two sustainability scenarios reveal the uneven performance across indicators (targets). The relatively low scores of MSR countries in Target 6.3, 6.4, 7.2, 14.5, 14.a, 15.1, and 15.6 suggest that governments should take appropriate actions for improvement. In terms of individual SDGs, Croatia and Italy lead all SDGs, whereas Iran and Somalia lag. As for the overall performance in SUNR, the top five performers are Croatia, Italy, Greece, United Arab Emirates, and Singapore, while Djibouti, Somalia, and Yemen rank last. The regional ability of SUNR is, in descending order, Europe, Asia, and Africa, related to the economic development level and resource endowment. The ...
    Keywords Natural resources ; Sustainable development goals ; Sustainability assessment ; Index system ; Performance ; Maritime Silk Road ; Ecology ; QH540-549.5
    Subject code 320
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: Advances in Artificial Intelligence for Perception Augmentation and Reasoning

    Wenfeng Zheng / Chao Liu / Bo Yang / Yichao Yang

    Applied Sciences, Vol 13, Iss 4227, p

    2023  Volume 4227

    Abstract: AI has seen great progress in recent decades, with a rapidly increasing computing capacity and the exponentially growing amount and types of processed data [.] ...

    Abstract AI has seen great progress in recent decades, with a rapidly increasing computing capacity and the exponentially growing amount and types of processed data [.]
    Keywords n/a ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: Consumer behavior patterns of carbon neutral label using the unified theory of acceptance and use of technology

    Chao Liu / Kairong Xiong / Xueli Chen / Xinyuan Huang

    Chinese Journal of Population, Resources and Environment, Vol 21, Iss 3, Pp 137-

    2023  Volume 144

    Abstract: China has paid considerable attention to developing and implementing a carbon labeling system in response to increasing environmental issues such as global warming. This paper aims to provide a theoretical basis for formulating and implementing a carbon ... ...

    Abstract China has paid considerable attention to developing and implementing a carbon labeling system in response to increasing environmental issues such as global warming. This paper aims to provide a theoretical basis for formulating and implementing a carbon labeling system in China through a study of consumer acceptance behavior and its influencing factors. This paper constructed an extended model of consumers’ acceptance behavior of carbon neutral labels based on the theories and methods of Unified Theory of Acceptance and Use of Technology (UTAUT) and analyzed the effects of five factors (carbon label cognition, performance expectancy, effort expectancy, social influence, and facilitating factors) on consumer carbon neutral label acceptance and adoption. The structural equation model analysis revealed that carbon label cognition, performance expectancy, social influence, and facilitating factors significantly, and positively impact consumers’ acceptance of carbon neutral labels. Moreover, carbon label cognition, performance expectancy, and facilitating factors significantly, and positively affect consumers’ carbon neutral label adoption behavior. Meanwhile, carbon label cognition, and effort expectancy have no significant impact on consumers’ willingness to accept carbon neutral labels, which in turn significantly impacts consumers’ carbon neutral label adoption behavior. According to the research findings, increasing the promotion of carbon labeling and improving the practical strategies and management recommendations for carbon label design are proposed.
    Keywords UTAUT Model ; Carbon Label ; Carbon Neutrality ; Carbon Peak ; Environmental sciences ; GE1-350
    Subject code 690
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher KeAi Communications Co., Ltd.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article ; Online: Evaluation of polyurethane sponge biocarrier effects on Litopenaeus vannamei cultivation in zero water exchange systems based on water quality, shrimp performance and bacterial community analysis

    Chao Liu / Liguo Chen / Ailing Xu / Zhiwen Song

    Frontiers in Environmental Science, Vol

    2023  Volume 11

    Abstract: To evaluate the effects of polyurethane sponge biocarriers with precultured biofilms (PSBF) on water quality, shrimp performance and bacterial communities, zero water exchange systems for Litopenaeus vannamei were constructed. The experiment consisted of ...

    Abstract To evaluate the effects of polyurethane sponge biocarriers with precultured biofilms (PSBF) on water quality, shrimp performance and bacterial communities, zero water exchange systems for Litopenaeus vannamei were constructed. The experiment consisted of four treatments: 1) NBF (control, PSB (polyurethane sponge biocarriers) 5% (v/v) + aeration); 2) PSBF2.5a (PSBF 2.5% (v/v) + aeration); 3) PSBF5a (PSBF 5% (v/v) + aeration); and 4) PSBF5 (PSBF 5% (v/v)). The results showed that the systems with PSBFs had low levels of NH4+-N, NO2−-N, and turbidity, and there was zero water exchange throughout the entire culture process. The mean final weight, survival rate and final biomass of Litopenaeus vannamei in the PSBFs treatments were significantly higher, while the feed conversion ratio was lower than in the NBF treatments. The high-throughput sequencing results showed that the bacterial community abundance and diversity of biofilms in the PSBF systems were higher than those in the NBF systems. Four main genera of bacteria related to nitrification, Nitrosococcus, Nitrosomonas, Nitrococcus and Nitrospira, were identified. The total relative abundances of Nitrospira and Nitrosomonas in the PSBF systems were significantly higher than those in the NBF system. Meanwhile, better removal effects of NH4+-N and NO2−-N could be achieved and were positively correlated with the abundances of nitrifying microbial communities in PSBs, further indicating that nitrifying microbial communities in PSBs had positive effects on water quality and shrimp productive performance. This study provides data to support the application of polyurethane sponge biocarriers with precultured biofilms in zero water exchange systems for L. vannamei culture.
    Keywords zero water exchange aquaculture systems ; water quality ; bacterial community structure ; Litopenaeus vannamei ; polyurethane sponge biocarrier ; Environmental sciences ; GE1-350
    Subject code 550
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top