LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1007

Search options

  1. Book ; Online: Searching on the boundary of abundance for odd weird numbers

    Fang, Wenjie

    2022  

    Abstract: Weird numbers are abundant numbers that are not pseudoperfect. Since their introduction, the existence of odd weird numbers has been an open problem. In this work, we describe our computational effort to search for odd weird numbers, which shows their ... ...

    Abstract Weird numbers are abundant numbers that are not pseudoperfect. Since their introduction, the existence of odd weird numbers has been an open problem. In this work, we describe our computational effort to search for odd weird numbers, which shows their non-existence up to $10^{21}$. We also searched up to $10^{28}$ for numbers with an abundance below $10^{14}$, to no avail. Our approach to speed up the search can be viewed as an application of reverse search in the domain of combinatorial optimization, and may be useful for other similar quest for natural numbers with special properties that depend crucially on their factorization.

    Comment: 8 pages
    Keywords Mathematics - Number Theory ; Computer Science - Discrete Mathematics
    Publishing date 2022-07-26
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    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.

  2. Article ; Online: Editorial: Immune interactions with pathogenic and commensal fungi.

    Fang, Wenjie / Coelho, Carolina / Cao, Cunwei / Zhang, Lei / Liao, Wanqing

    Frontiers in immunology

    2023  Volume 13, Page(s) 1108022

    MeSH term(s) Fungi ; Antifungal Agents/therapeutic use
    Chemical Substances Antifungal Agents
    Language English
    Publishing date 2023-01-04
    Publishing country Switzerland
    Document type Editorial ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.1108022
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

  3. Article ; Online: Effect of solvent quality and sidechain architecture on conjugated polymer chain conformation in solution.

    Ma, Guorong / Li, Zhaofan / Fang, Lei / Xia, Wenjie / Gu, Xiaodan

    Nanoscale

    2024  Volume 16, Issue 13, Page(s) 6495–6506

    Abstract: Conjugated polymers (CPs) are solution-processible for various electronic applications, where solution aggregation and dynamics could impact the morphology in the solid state. Various solvents and solvent mixtures have been used to dissolve and process ... ...

    Abstract Conjugated polymers (CPs) are solution-processible for various electronic applications, where solution aggregation and dynamics could impact the morphology in the solid state. Various solvents and solvent mixtures have been used to dissolve and process CPs, but few studies have quantified the effect of solvent quality on the solution behavior of CPs. Herein, we performed static light scattering and small-angle X-ray scattering combined with molecular dynamics (MD) simulation to investigate CP solution behaviors with solvents of varying quality, including poly(3-alkylthiophene) (P3ATs) with various sidechain lengths from -C
    Language English
    Publishing date 2024-03-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr05721f
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

  4. Article ; Online: A case of congenital rubella syndrome and epidemiology of related cases in China, 2014-2023.

    Gong, Xiaoying / Zheng, Canjie / Fang, Quanjun / Xu, Wenjie / Yin, Zhiying

    Human vaccines & immunotherapeutics

    2024  Volume 20, Issue 1, Page(s) 2334917

    Abstract: Rubella is a major cause of congenital defects, and the presence of rubella infection in a pregnant woman may lead to fetal death or congenital defects known as congenital rubella syndrome(CRS). Since China has not yet established a national CRS ... ...

    Abstract Rubella is a major cause of congenital defects, and the presence of rubella infection in a pregnant woman may lead to fetal death or congenital defects known as congenital rubella syndrome(CRS). Since China has not yet established a national CRS surveillance system, the true incidence cannot be determined. To understand the disease burden and epidemiological characteristics of CRS cases in China, the article reports the first case of CRS in Quzhou, China, and conducts a retrospective analysis of related cases that have been reported in China over the past decade. Because the availability of rubella-containing vaccines (RCV) was not widespread in China before 2008, women of childbearing age born before 2008 are generally unvaccinated against RCV. Due to the lack of routine CRS monitoring and screening, CRS is underreported in China. Vaccination of nonimmune women of childbearing age with RCV and establishing a sensitive and timely case-based CRS surveillance system can accelerate the elimination of rubella and CRS.
    MeSH term(s) Pregnancy ; Humans ; Female ; Infant ; Rubella Syndrome, Congenital/epidemiology ; Rubella Syndrome, Congenital/prevention & control ; Retrospective Studies ; Rubella/epidemiology ; Rubella/prevention & control ; Rubella Vaccine ; Rubella virus
    Chemical Substances Rubella Vaccine
    Language English
    Publishing date 2024-04-07
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2664176-8
    ISSN 2164-554X ; 2164-5515
    ISSN (online) 2164-554X
    ISSN 2164-5515
    DOI 10.1080/21645515.2024.2334917
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 6967: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    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.

  5. Article ; Online: Thalassemia caused by compex large fragment rearrangements.

    Zhang, Rui / Li, Rong / Fang, Junbin / Liang, Yingmin / Kou, Wenjie / Huang, Xiaoyan / Chen, Shiping / Wu, Yong

    QJM : monthly journal of the Association of Physicians

    2024  

    Language English
    Publishing date 2024-05-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 1199985-8
    ISSN 1460-2393 ; 0033-5622 ; 1460-2725
    ISSN (online) 1460-2393
    ISSN 0033-5622 ; 1460-2725
    DOI 10.1093/qjmed/hcae089
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Ua VI Zs.131: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    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.

  6. Article ; Online: Construction of a highly efficient adsorbent for one-step purification of recombinant proteins: Functionalized cellulose-based monolith fabricated via phase separation method.

    Huang, Lanlan / Chen, Guronghua / Zhang, Guozhi / Fang, Yue / Zhu, Wenjie / Xin, Yuanrong

    Carbohydrate polymers

    2024  Volume 335, Page(s) 122046

    Abstract: Currently, purification step in the recombinant protein manufacture is still a great challenge and its cost far outweighs those of the upstream process. In this study, a functionalized cellulose-based monolith was constructed as an efficient affinity ... ...

    Abstract Currently, purification step in the recombinant protein manufacture is still a great challenge and its cost far outweighs those of the upstream process. In this study, a functionalized cellulose-based monolith was constructed as an efficient affinity adsorbent for one-step purification of recombinant proteins. Firstly, the fundamental cellulose monolith (CE monolith) was fabricated based on thermally induced phase separation, followed by being modified with nitrilotriacetic acid anhydride through esterification to give NCE monolith. After chelating with Ni
    MeSH term(s) Escherichia coli ; Phase Separation ; Adsorption ; Cellulose ; Recombinant Proteins/genetics
    Chemical Substances Cellulose (9004-34-6) ; Recombinant Proteins
    Language English
    Publishing date 2024-03-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2024.122046
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

  7. Article ; Online: Association study between SNPs in MST1 and MST2 genes and H. pylori infection as well as non-cardia gastric carcinogenesis.

    Ma, Licong / Gao, Fang / Dong, Wenjie / Song, Qiang / Jia, Yanbin

    Digestive diseases (Basel, Switzerland)

    2024  

    Abstract: Introduction Gastric cancer (GC) remains a global health challenge, and H. pylori infection is a main risk factor for non-cardia GC. The present study aimed to investigate the association between single nucleotide polymorphisms (SNPs) in Mammalian ... ...

    Abstract Introduction Gastric cancer (GC) remains a global health challenge, and H. pylori infection is a main risk factor for non-cardia GC. The present study aimed to investigate the association between single nucleotide polymorphisms (SNPs) in Mammalian sterile 20-like kinase 1 (MST1) and MST2, Helicobacter pylori (H. pylori) infection, and the risk of non-cardia gastric cancer (GC). Methods A case-control study was conducted using enzyme-linked immunosorbent assay (ELISA) and Taqman method to detect the titer of anti-H. pylori antibody in normal human serum and genotype 9 SNPs of MST1 and MST2 genes among 808 samples. Unconditional logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for the association between SNPs and H. pylori infection, as well as the risk of non-cardia gastric cancer in codominant, dominant, overdominant, recessive, and log-additive genetic models. Haplotypes were constructed using the Haploview 4.2 software. Results The CC genotype of MST2 SNP rs10955176 was associated with a reduced risk of H. pylori infection compared to the TT+CT genotype. None of other SNPs were associated with H. pylori infection. The TT genotype of MST2 SNP rs7827435 was associated with a reduced risk of non-cardia gastric cancer compared to the AA+AT genotype. None of the SNPs were associated with non-cardia gastric cancer. There were no associations between haplotypes and H. pylori infection or the risk of non-cardia gastric cancer. Conclusions The CC genotype of rs10955176 and the TT genotype of rs7827435 may serve as protective factors against H. pylori infection and non-cardia gastric cancer risk, respectively.
    Language English
    Publishing date 2024-01-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 632798-9
    ISSN 1421-9875 ; 0257-2753
    ISSN (online) 1421-9875
    ISSN 0257-2753
    DOI 10.1159/000536507
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 1853: 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

    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.

  8. Article: Lactobacillus johnsonii

    Yin, Zhangzheng / Wang, Kaijun / Liu, Yun / Li, Yunxia / He, Fang / Yin, Jie / Tang, Wenjie

    Animals : an open access journal from MDPI

    2024  Volume 14, Issue 3

    Abstract: Probiotic intervention is a well-established approach for replacing antibiotics in the management of weaning piglet diarrhea, which involves a large number of complex systems interacting with the gut microbiota, including the endocannabinoid system; ... ...

    Abstract Probiotic intervention is a well-established approach for replacing antibiotics in the management of weaning piglet diarrhea, which involves a large number of complex systems interacting with the gut microbiota, including the endocannabinoid system; nevertheless, the specific role of the endocannabinoid system mediated by probiotics in the piglet intestine has rarely been studied. In this study, we used antibiotics (ampicillin) to perturb the intestinal microbiota of piglets. This resulted in that the gene expression of the intestinal endocannabinoid system was reprogrammed and the abundance of probiotic
    Language English
    Publishing date 2024-02-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2606558-7
    ISSN 2076-2615
    ISSN 2076-2615
    DOI 10.3390/ani14030493
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

  9. Article ; Online: Facet-Dependent Photocatalytic Behavior of Rutile TiO

    Zhou, Wenjie / Chen, Fang / Li, Mengmeng / Cheng, Qin / Deng, Juan / Wang, Pengcheng / Cai, Mengdie / Sun, Song

    Langmuir : the ACS journal of surfaces and colloids

    2024  Volume 40, Issue 4, Page(s) 2120–2129

    Abstract: In this study, a custom rutile titanium dioxide ( ... ...

    Abstract In this study, a custom rutile titanium dioxide (TiO
    Language English
    Publishing date 2024-01-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2005937-1
    ISSN 1520-5827 ; 0743-7463
    ISSN (online) 1520-5827
    ISSN 0743-7463
    DOI 10.1021/acs.langmuir.3c03015
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

  10. Article: Progress in the application of nanoparticles for the treatment of fungal infections: A review.

    Zhu, Xinlin / Chen, Youming / Yu, Dan / Fang, Wenjie / Liao, Wanqing / Pan, Weihua

    Mycology

    2023  Volume 15, Issue 1, Page(s) 1–16

    Abstract: The burden of fungal infections on human health is increasing worldwide. ...

    Abstract The burden of fungal infections on human health is increasing worldwide.
    Language English
    Publishing date 2023-12-08
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2553667-9
    ISSN 2150-1211 ; 2150-1203
    ISSN (online) 2150-1211
    ISSN 2150-1203
    DOI 10.1080/21501203.2023.2285764
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    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.

To top