LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1663

Search options

  1. Article ; Online: Influence of Foods and Nutrition on the Gut Microbiome and Implications for Intestinal Health

    Ping Zhang

    International Journal of Molecular Sciences, Vol 23, Iss 9588, p

    2022  Volume 9588

    Abstract: Food components in our diet provide not only necessary nutrients to our body but also substrates for the mutualistic microbial flora in our gastrointestinal tract, termed the gut microbiome. Undigested food components are metabolized to a diverse array ... ...

    Abstract Food components in our diet provide not only necessary nutrients to our body but also substrates for the mutualistic microbial flora in our gastrointestinal tract, termed the gut microbiome. Undigested food components are metabolized to a diverse array of metabolites. Thus, what we eat shapes the structure, composition, and function of the gut microbiome, which interacts with the gut epithelium and mucosal immune system and maintains intestinal homeostasis in a healthy state. Alterations of the gut microbiome are implicated in many diseases, such as inflammatory bowel disease (IBD). There is growing interest in nutritional therapy to target the gut microbiome in IBD. Investigations into dietary effects on the composition changes in the gut microbiome flourished in recent years, but few focused on gut physiology. This review summarizes the current knowledge regarding the impacts of major food components and their metabolites on the gut and health consequences, specifically within the GI tract. Additionally, the influence of the diet on the gut microbiome-host immune system interaction in IBD is also discussed. Understanding the influence of the diet on the interaction of the gut microbiome and the host immune system will be useful in developing nutritional strategies to maintain gut health and restore a healthy microbiome in IBD.
    Keywords gut microbiome ; gut microbiota ; nutrition ; foods ; dietary fiber ; dietary fats ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2022-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Article ; Online: Quantum Attacks on Sum of Even–Mansour Construction with Linear Key Schedules

    Ping Zhang

    Entropy, Vol 24, Iss 153, p

    2022  Volume 153

    Abstract: Shinagawa and Iwata are considered quantum security for the sum of Even–Mansour (SoEM) construction and provided quantum key recovery attacks by Simon’s algorithm and Grover’s algorithm. Furthermore, quantum key recovery attacks are also presented for ... ...

    Abstract Shinagawa and Iwata are considered quantum security for the sum of Even–Mansour (SoEM) construction and provided quantum key recovery attacks by Simon’s algorithm and Grover’s algorithm. Furthermore, quantum key recovery attacks are also presented for natural generalizations of SoEM. For some variants of SoEM, they found that their quantum attacks are not obvious and left it as an open problem to discuss the security of such constructions. This paper focuses on this open problem and presents a positive response. We provide quantum key recovery attacks against such constructions by quantum algorithms. For natural generalizations of SoEM with linear key schedules, we also present similar quantum key recovery attacks by quantum algorithms (Simon’s algorithm, Grover’s algorithm, and Grover-meet-Simon algorithm).
    Keywords quantum attacks ; sum of Even–Mansour construction ; linear key schedule ; quantum algorithms ; Science ; Q ; Astrophysics ; QB460-466 ; Physics ; QC1-999
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article ; Online: Permutation-Based Lightweight Authenticated Cipher with Beyond Conventional Security

    Ping Zhang

    Security and Communication Networks, Vol

    2021  Volume 2021

    Abstract: Lightweight authenticated ciphers are specially designed as authenticated encryption (AE) schemes for resource-constrained devices. Permutation-based lightweight authenticated ciphers have gained more attention in recent years. However, almost all of ... ...

    Abstract Lightweight authenticated ciphers are specially designed as authenticated encryption (AE) schemes for resource-constrained devices. Permutation-based lightweight authenticated ciphers have gained more attention in recent years. However, almost all of permutation-based lightweight AE schemes only ensure conventional security, i.e., about c/2-bit security, where c is the capacity of the permutation. This may be vulnerable for an insufficiently large capacity. This paper focuses on the stronger security guarantee and the better efficiency optimization of permutation-based lightweight AE schemes. On the basis of APE series (APE, APERI, APEOW, and APECA), we propose a new improved permutation-based lightweight online AE mode APE+ which supports beyond conventional security and concurrent absorption. Then, we derive a simple security proof and prove that APE+ enjoys at most about minr,c-bit security, where r is the rate of the permutation. Finally, we discuss the properties of APE+ on the hardware implementation.
    Keywords Technology (General) ; T1-995 ; Science (General) ; Q1-390
    Subject code 005
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Hindawi-Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Image Data Security Mechanism Based on the Internet of Things Cardiac Catheterization Laboratory Information Management System Research and Design

    Ping Zhang

    Journal of Healthcare Engineering, Vol

    2021  Volume 2021

    Abstract: With the development of science and technology, more and more operations are performed in the cardiac catheterization laboratory. During such operations, a lot of relevant imaging data need to be retained. These imaging data can be used for clinical and ... ...

    Abstract With the development of science and technology, more and more operations are performed in the cardiac catheterization laboratory. During such operations, a lot of relevant imaging data need to be retained. These imaging data can be used for clinical and scientific research and teaching applications, but imaging data security has also become an increasingly important issue. This article is based on the Internet of Things cardiac catheterization laboratory information management system image data security mechanism system research. First of all, this article adopts the literature method to study the application research of the Internet of Things technology in the medical field, as well as the relevant medical imaging data security technology methods. Then, the medical image data security mechanism was designed, and the image data security model of the cardiac catheterization laboratory information management system based on the Internet of Things was established. Finally, the application of decentralized management of the Internet of Things RFID technology on medical equipment and the security of the application of this technology on medical imaging data are analyzed, and finally a conclusion is drawn. The image data security mechanism established in this article is based on the Internet of Things technology. The security rate of image information data reaches more than 95%, the information data security level reaches level 1, and the average data missing rate is only 4.7%. It is a brand-new breakthrough, hoping to further improve the efficiency of hospital information management and protect the safety of medical information.
    Keywords Medicine (General) ; R5-920 ; Medical technology ; R855-855.5
    Subject code 303
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: Review of Synthesis and Evaluation of Inhibitor Nanomaterials for Oilfield Mineral Scale Control

    Ping Zhang

    Frontiers in Chemistry, Vol

    2020  Volume 8

    Abstract: Oilfield flow assurance is the subject to study the impact on the flow of production fluids due to physicochemical changes in the production system. Mineral scale deposition is among the top 3 water-related flow assurance challenges in petroleum industry, ...

    Abstract Oilfield flow assurance is the subject to study the impact on the flow of production fluids due to physicochemical changes in the production system. Mineral scale deposition is among the top 3 water-related flow assurance challenges in petroleum industry, particularly for offshore and shale operations. Scale deposition can lead to serious operational risks and significant financial loss. The most commonly adopted strategy in oilfield scale control is the deployment of chemical inhibitors. Although conventional chemical inhibitors are effective in inhibiting scale threat, they have the drawbacks of short transport distance and limited squeeze lifetime due to their intrinsic chemical properties. In the past decade, as an alternative to conventional chemical inhibition, research efforts have been made to prepare functional nanomaterials with different chemical compositions to overcome the drawbacks of conventional chemical inhibitors. These synthesized nanomaterials can serve as delivery vehicles to deploy inhibitors into the target location in the production system. These nanomaterials are reported to have multiple advantages over the conventional inhibitors in terms of transportability, controlled release, and functionality, evidenced by a series of experimental studies. This review presents an overview of scale inhibitor nanomaterial development and the current methods to synthesize and to evaluate these nanomaterials in a systematic and comprehensive manner. This review focuses on the chemistry principles and methodologies underlying inhibitor nanomaterial synthesis and also the chemical instrument and strategies in evaluating the physiochemical properties of these materials in terms of inhibition effectiveness, transportability, and inhibitor return. The scale inhibitor nanomaterials (SINMs) presented in this review exemplify the continuous development in our capabilities in adopting novel nanotechnology in combating actual engineering challenges in petroleum industry.
    Keywords oilfield ; mineral ; scale ; inhibitor ; nanomaterial ; transport ; Chemistry ; QD1-999
    Subject code 540
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  6. Article ; Online: The Impacts of Family Educational Investment on Mental Health of Chinese Parents

    Ping Zhang / Zhewei Xu

    International Journal of Public Health, Vol

    Mediating and Moderating Effects

    2023  Volume 68

    Abstract: Objectives: This review aims to explore the impact of family educational investment on parents’ mental health in China. Through this study, we reveal the current public health challenges and propose some solutions.Methods: Family educational investment ... ...

    Abstract Objectives: This review aims to explore the impact of family educational investment on parents’ mental health in China. Through this study, we reveal the current public health challenges and propose some solutions.Methods: Family educational investment takes three forms: economic investment, emotional investment, and time investment. This study examined the mediating effect of social integration and the moderating effect of social participation and workload on the relationship between family educational investment and parental mental health.Results: Economic investment, emotional investment and time investment were all negatively correlated with parental mental health. Social integration could better explain the detrimental effects of family educational investment on parental mental health, and that social participation and workload could play a significant negative and positive moderating role, respectively.Conclusion: Family educational investment, particularly emotional investment, plays an important and negative role in influencing parental mental health. To cope with the increased pressure brought about by educational competition, the state, society, and individuals all need to take measures.
    Keywords family educational investment ; parental mental health ; social integration ; social participation ; workload ; measures ; Public aspects of medicine ; RA1-1270
    Subject code 360
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Connection between the Tropical Pacific and Indian Ocean and Temperature Anomaly across West Antarctic

    Ping Zhang / Anmin Duan

    npj Climate and Atmospheric Science, Vol 6, Iss 1, Pp 1-

    2023  Volume 9

    Abstract: Abstract West Antarctic and the Antarctic Peninsula have experienced dramatic warming in austral spring since the 1970s. Using observations and the Community Atmosphere Model version 4 (CAM4), this study explores the physical mechanism by which the ... ...

    Abstract Abstract West Antarctic and the Antarctic Peninsula have experienced dramatic warming in austral spring since the 1970s. Using observations and the Community Atmosphere Model version 4 (CAM4), this study explores the physical mechanism by which the tropical Pacific and Indian Ocean temperature anomaly mode (PIM) affects the dipolar surface air temperature (SAT) anomalies across the West Antarctic in austral spring. The positive phase of the PIM, characterized by positive sea surface temperature anomalies (SSTAs) in the tropical central-eastern Pacific and western Indian Ocean and negative SSTAs in the Maritime Continent, can generate two branches of stationary Rossby wave trains propagating from the tropical central Pacific and southeastern Indian Ocean to the West Antarctic, with an anticyclonic anomaly appearing over the Amundsen Sea. The northerlies advect warmer air to the Ross–Amundsen Seas, but southerlies advect colder air to the Antarctic Peninsula–Weddell Sea, resulting in the dipole of SAT anomalies over the West Antarctic. In this process, the role of tropical central-eastern Pacific SSTAs dominate, and it is amplified by the SSTAs around the Maritime Continent. The SSTAs in the western Indian Ocean combined with the SSTAs over the Maritime Continent further contribute to the western pole of the SAT. Only simulation that includes a prescribed PIM forcing can exactly reproduce the observations of the dipolar SAT response across the West Antarctic, indicating the need to treat the tropical Pacific and Indian Oceans as a unified whole.
    Keywords Environmental sciences ; GE1-350 ; Meteorology. Climatology ; QC851-999
    Subject code 551
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  8. Article ; Online: Experimental Study on Dynamic Exhaust Law for Ventilation System of Gas Tunnel

    Ping Zhang / Hui-Qing Lan

    Applied Sciences, Vol 13, Iss 23, p

    2023  Volume 12783

    Abstract: The ventilation system is the only channel for gas exchange inside and outside the gas tunnel, which determines whether the high-risk gas in the tunnel can be exhausted in time after a gas leakage accident; thus, it is essential to study the dynamic ... ...

    Abstract The ventilation system is the only channel for gas exchange inside and outside the gas tunnel, which determines whether the high-risk gas in the tunnel can be exhausted in time after a gas leakage accident; thus, it is essential to study the dynamic ventilation characteristics. A fire-retarding division of the gas tunnel in Songjiang District of Shanghai is taken as the study object, and, based on the similarity theory, a similarity experiment platform is built. The simulation experiments of exhaust are carried out under different exhaust velocities, ventilation equivalent diameters and initial gas concentrations by using the control variable method. The changes in ventilation duration and gas concentration are analyzed in detail. The conclusions are as follows: (1) Time–concentration curves at all positions in the gas tunnel exhibit an “asymptote” distribution. (2) Average gas concentration has a linear relationship with time at the beginning and becomes an exponential relationship after a certain time. (3) When the exhaust velocity is 5 m/s, the initial gas concentration is 15%VOL; when the equivalent diameter of the vent in the model is 0.2 m, the ventilation duration is 100.2 s. A calculation model of ventilation duration for the standard gas tunnel is established, and the application limits of the model are 1 ≤ v ≤ 5, 0.5 ≤ d ≤ 1.5, and 5 ≤ <semantics> φ o </semantics> ≤ 25. (4) In practical engineering, an exhaust velocity of 5 m/s and an equivalent ventilation diameter of 1 m are relatively optimal ventilation parameters.
    Keywords gas tunnel ; ventilation and exhaust ; similarity experiment ; ventilation duration ; concentration variation ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
    Subject code 690
    Language English
    Publishing date 2023-11-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: Prognostic factors of patients with recurrent uterine malignancies undergoing secondary cytoreductive surgery

    Chenyan Fang / Yingli Zhang / Ping Zhang / Tao Zhu

    BMC Women's Health, Vol 24, Iss 1, Pp 1-

    2024  Volume 14

    Abstract: Abstract Background Several studies have demonstrated that secondary cytoreductive surgery (SCS) for patients with recurrent uterine malignancies may improve the survival. However, the selection criteria for SCS remain to be defined. This study aimed to ... ...

    Abstract Abstract Background Several studies have demonstrated that secondary cytoreductive surgery (SCS) for patients with recurrent uterine malignancies may improve the survival. However, the selection criteria for SCS remain to be defined. This study aimed to assess the outcome of SCS and to explore factors that may influence the prognosis. Methods Data of patients with recurrent uterine malignancies who received SCS in our hospital between January 2005 and January 2015 were retrospectively analyzed. Patients were assigned into endometrial carcinoma (EC) group and uterine sarcoma (US) group. Results 84 cases in total were involved in the study, including 47 cases with recurrent EC and 37 cases with recurrent US. The 5-year survival of cases with recurrent EC and recurrent US was 59.6% and 33.3%, respectively. Recurrent EC cases with a lower tumor grade (G1/G1-G2/G2), size of the largest tumor ≤ 6 cm, single recurrent tumor, a history of adjuvant therapy, as well as recurrent US cases with younger age, a longer disease-free interval (DFI) before SCS (≥ 12 months), no peritoneal dissemination, and a history of complete cytoreduction were associated with a longer survival. The number of recurrent tumors was found as an independent prognostic factor of SCS. Conclusion Recurrent EC cases with a lower tumor grade, smaller tumor size, single tumor, a history of adjuvant therapy, as well as recurrent US cases with younger age, a longer DFI before SCS, no peritoneal dissemination, and a history of complete cytoreduction were more likely to benefit from SCS.
    Keywords Recurrent uterine malignancy ; Secondary cytoreductive Surgery ; Prognosis ; Gynecology and obstetrics ; RG1-991 ; Public aspects of medicine ; RA1-1270
    Subject code 610
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article ; Online: Boym and Rémusat

    Xi- Ping Zhang

    Chinese Medicine and Culture, Vol 4, Iss 3, Pp 137-

    Communication of traditional chinese medicine and the rise of western sinology

    2021  Volume 140

    Abstract: This article provides an introduction to Michel Boym (1612–1659) and Jean Pierre Abel Rémusat (1788–1832) and examines the research on traditional Chinese medicine (TCM) conducted by the two prominent sinologists. This work points out that Michel Boym ... ...

    Abstract This article provides an introduction to Michel Boym (1612–1659) and Jean Pierre Abel Rémusat (1788–1832) and examines the research on traditional Chinese medicine (TCM) conducted by the two prominent sinologists. This work points out that Michel Boym introduced TCM to the West and Rémusat was the first to write a doctoral thesis on TCM. A historical overview of the translation, communication and impact of TCM in Europe at that time reveals that this communication of TCM to the West played a significant role in the rise of the study of Sinology in Europe.
    Keywords jean pierre abel rémusat ; michel boym ; sinology ; 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

To top