LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 489

Search options

  1. Conference proceedings ; Online: The role of quantitative ecology and systems analysis in the biological control of larger grain borer

    Markham, R.H.

    2019  

    Keywords prostephanus truncatus ; biological control ; quantitative analysis ; stored products pests ; natural enemies ; systems analysis
    Language English
    Publishing date 2019-06-25T17:09:19Z
    Publishing country fr
    Document type Conference proceedings ; 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: A Review of the Partner Trials.

    Markham, Ryan / Sharma, Rahul

    Interventional cardiology clinics

    2020  Volume 9, Issue 4, Page(s) 461–467

    Abstract: Aortic stenosis (AS) of moderate or greater severity has an estimated prevalence of 5% in people older than 65 years. Survival is poor after onset of symptoms, and surgical aortic valve replacement was the gold-standard treatment for decades. However, ... ...

    Abstract Aortic stenosis (AS) of moderate or greater severity has an estimated prevalence of 5% in people older than 65 years. Survival is poor after onset of symptoms, and surgical aortic valve replacement was the gold-standard treatment for decades. However, more than one-third of patients with symptomatic AS were untreated due to high surgical risk, exposing a clinical need for a less invasive therapy for aortic valve stenosis. The PARTNER trials were pivotal in presenting robust evidence for the safety, feasibility, and efficacy of transcatheter aortic valve replacement in the management of AS and paved the way for clinical use worldwide.
    MeSH term(s) Aortic Valve/surgery ; Aortic Valve Stenosis/surgery ; Clinical Trials as Topic ; Heart Valve Prosthesis ; Humans ; Transcatheter Aortic Valve Replacement/methods
    Language English
    Publishing date 2020-08-14
    Publishing country Netherlands
    Document type Journal Article ; Review
    ISSN 2211-7466
    ISSN (online) 2211-7466
    DOI 10.1016/j.iccl.2020.07.002
    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.

    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.

  3. Article ; Online: Biological control in Africa and its possible effects on biodiversity

    Neuenschwander, P. / Markham, R.

    2018  

    Abstract: Biological control efforts in tropical Africa have been most often directed at invading exotic species and are conducted in rapidly changing landscapes, in which the flora, fauna and ecological interactions are imperfectly known. Faced with major threats ...

    Abstract Biological control efforts in tropical Africa have been most often directed at invading exotic species and are conducted in rapidly changing landscapes, in which the flora, fauna and ecological interactions are imperfectly known. Faced with major threats to food production and ecosystem destruction, biological control practitioners have been obliged to take a pragmatic approach to minimize the risks of undesirable ecological effects. Work-shops convened under the auspices of the Inter-African Phytosanitary Council and the FAO brought together local slake holders and inter-national agencies to develop the various projects on classical biological control. Procedures required as pre-conditions for the importation of biological control agents have usually involved third country quarantine and host specificity tests, which -following the FAO code of conduct-have become more rigorous in recent years. Thus far, extensive pre-release testing of candidate control agents for the ability to attack native relatives of target species has not usually been required. Post-release documentation of impact has often included detailed ecological studies, but these have focused largely on agricultural habitats. The procedures followed and insights gained in relation to indirect effects are discussed in the light of classical biological control campaigns involving parasitoids and predators against exotic Homoptera, tetranychid mites, lepidopterous stemborers, thrips, the larger grain borer and water hyacinth, and the inundative use of fungaI pathogens against grasshoppers.
    Keywords biological control ; biodiversity ; mealybug ; cassava ; mango ; cowpeas ; maize
    Language English
    Publishing date 2018-05-17T09:03:00Z
    Publishing country fr
    Document type Article ; 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.

  4. Conference proceedings ; Online: A strategy to transform the banana sector in Africa

    Beed, Fenton D. / Markham, R.

    2018  

    Keywords starchy staple food ; markets ; bananas ; economic growth ; plantains ; smallholders ; dessert bananas ; cooking bananas ; farming systems
    Language English
    Publishing date 2018-04-24T08:40:06Z
    Publishing country fr
    Document type Conference proceedings ; 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.

  5. Article ; Online: Artificial intelligence in cardiology: fundamentals and applications.

    Watson, Xavier / D'Souza, Joshua / Cooper, Daniel / Markham, Ryan

    Internal medicine journal

    2022  Volume 52, Issue 6, Page(s) 912–920

    Abstract: Artificial intelligence (AI) is an overarching term that encompasses a set of computational approaches that are trained through generalised learning to autonomously execute specific tasks. AI is a rapidly expanding field in medicine. In particular ... ...

    Abstract Artificial intelligence (AI) is an overarching term that encompasses a set of computational approaches that are trained through generalised learning to autonomously execute specific tasks. AI is a rapidly expanding field in medicine. In particular cardiology, with its high reliance on numerical patient data in decision making, has great potential to benefit from AI. Types of AI, including neural networks and computer vision, can dramatically change the day-to-day workflow of cardiologists, primarily through integration in diagnostic imaging modalities, periprocedural planning, electronic health record analysis and patient monitoring. Healthcare systems will undoubtedly become more automated and shift to more AI-driven methods to improve efficiency and reduce cost. Patients in the end will benefit from these changes with improved diagnostic accuracy, better tailored treatments resulting in a greater quality and quantity of life. In this article, we will describe some of the fundamental principles underlying AI that physicians should have an understanding of, along with current clinical applications.
    MeSH term(s) Artificial Intelligence ; Cardiology/methods ; Electronic Health Records ; Humans ; Neural Networks, Computer
    Language English
    Publishing date 2022-05-31
    Publishing country Australia
    Document type Journal Article ; Review
    ZDB-ID 2045436-3
    ISSN 1445-5994 ; 1444-0903
    ISSN (online) 1445-5994
    ISSN 1444-0903
    DOI 10.1111/imj.15562
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 792: 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)
    Zs.MO 424: Show issues

    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. Book ; Online: Open-Set

    Markham, Reuben / Espin, Juan M. / Nieto-Hidalgo, Mario / Tapia, Juan E.

    ID Card Presentation Attack Detection using Neural Transfer Style

    2023  

    Abstract: The accurate detection of ID card Presentation Attacks (PA) is becoming increasingly important due to the rising number of online/remote services that require the presentation of digital photographs of ID cards for digital onboarding or authentication. ... ...

    Abstract The accurate detection of ID card Presentation Attacks (PA) is becoming increasingly important due to the rising number of online/remote services that require the presentation of digital photographs of ID cards for digital onboarding or authentication. Furthermore, cybercriminals are continuously searching for innovative ways to fool authentication systems to gain unauthorized access to these services. Although advances in neural network design and training have pushed image classification to the state of the art, one of the main challenges faced by the development of fraud detection systems is the curation of representative datasets for training and evaluation. The handcrafted creation of representative presentation attack samples often requires expertise and is very time-consuming, thus an automatic process of obtaining high-quality data is highly desirable. This work explores ID card Presentation Attack Instruments (PAI) in order to improve the generation of samples with four Generative Adversarial Networks (GANs) based image translation models and analyses the effectiveness of the generated data for training fraud detection systems. Using open-source data, we show that synthetic attack presentations are an adequate complement for additional real attack presentations, where we obtain an EER performance increase of 0.63% points for print attacks and a loss of 0.29% for screen capture attacks.
    Keywords Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Cryptography and Security
    Subject code 006
    Publishing date 2023-12-21
    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.

  7. Article: Managing diseases and pests of banana: the way ahead?

    Markham, R

    Acta horticulturae. 2009 May, no. 828

    2009  

    Keywords Musa ; bananas ; plant diseases and disorders ; disease control ; research and development
    Language English
    Dates of publication 2009-05
    Size p. 417-427.
    Document type Article
    Note Paper presented at the International Symposium on Recent Advances in Banana Crop Protection for Sustainable Production and Improved Livelihoods, held September 10-14, 2007, White River South Africa.
    ISSN 0567-7572
    Database NAL-Catalogue (AGRICOLA)

    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.

    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.

  8. Conference proceedings ; Online: Can biological control resolve the larger grai borer crisis?

    Markham, R. / Borgemeister, C. / Meikle, W.

    2019  

    Abstract: The accidental introduction of the lager grain borer, Prostephanus truncates, in the early 1980s result in destructive pest outbreaks in small-farm maize stores in both East and West Africa. Studies comparing the situation in rural maize stores in Costa ... ...

    Abstract The accidental introduction of the lager grain borer, Prostephanus truncates, in the early 1980s result in destructive pest outbreaks in small-farm maize stores in both East and West Africa. Studies comparing the situation in rural maize stores in Costa Rica (in the pest's neotropical area of origin) with that control of natural enemies in Central America and that classical biological control of the pest in Africa might be feasible. The search for appropriate natural enemies is reviewed, with special attention to the predator Teretriosoma nigrescens, which posed special problems in view of its non-specific predation behavior and ability to feed directly on store products. This predator has now been released in three African Countries, but no data are yet available on its impact. The benefits which may be expected from the release of T. nigrescens, and the difficulties involved in quantifying them, are discussed in terms of the principles of population dynamics and biological control. It is concluded that the predator is unlikely to achieve a homogeneous and acceptable level of control, and that supplementary, integrated control measures are likely to be needed, to moderate the damage suffered by individual farmers. The possible form of an integrated control strategy is integrated.
    Keywords farmers ; pests ; maize ; biological control
    Language English
    Publishing date 2019-04-24T12:29:49Z
    Publishing country fr
    Document type Conference proceedings ; 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.

  9. Article ; Online: TAVR in Patients with Pure Aortic Regurgitation: Ready to Use?

    Markham, Ryan / Ghodsian, M / Sharma, R

    Current cardiology reports

    2020  Volume 22, Issue 9, Page(s) 98

    Abstract: Purpose of the review: Moderate or severe aortic regurgitation (AR) occurs in 0.5% of the population and typically peaks in the fourth to sixth decade of life. A significant proportion of patients have prohibitive surgical risk and are therefore treated ...

    Abstract Purpose of the review: Moderate or severe aortic regurgitation (AR) occurs in 0.5% of the population and typically peaks in the fourth to sixth decade of life. A significant proportion of patients have prohibitive surgical risk and are therefore treated medically with pharmacological management of heart failure and no definitive treatment of the underlying valvular pathology.
    Recent findings: Transcatheter aortic valve replacement (TAVR) has been used in an off-label setting to treat AR to attempt to reduce mortality and improve quality of life with varying levels of success. New-generation TAVR devices currently used in AS have demonstrated safety and feasibility when used in patients with AR. Novel TAVR devices dedicated for use in AR are being developed and early studies demonstrate promising results. Ongoing studies with larger clinical trials and novel methods of device anchoring are required, which if positive, will in turn lead to commercial approval and reimbursement, eventually making TAVR ready for use in AR.
    MeSH term(s) Aortic Valve/surgery ; Aortic Valve Insufficiency/surgery ; Aortic Valve Stenosis/surgery ; Fluoroscopy ; Heart Valve Prosthesis ; Humans ; Quality of Life ; Risk Factors ; Transcatheter Aortic Valve Replacement ; Treatment Outcome
    Language English
    Publishing date 2020-07-28
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2055373-0
    ISSN 1534-3170 ; 1523-3782
    ISSN (online) 1534-3170
    ISSN 1523-3782
    DOI 10.1007/s11886-020-01338-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 5524: 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.

  10. Article ; Online: Circulating and Endometrial Regulatory T Cell and Related Populations in Endometriosis and Infertility: Endometriosis Is Associated with Blunting of Endometrial Cyclical Effects and Reduced Proportions in Moderate-Severe Disease.

    Hey-Cunningham, A J / Riaz, A / Fromm, P D / Kupresanin, F / Markham, R / McGuire, H M

    Reproductive sciences (Thousand Oaks, Calif.)

    2021  Volume 29, Issue 1, Page(s) 229–242

    Abstract: Evidence to date supports regulatory T cell (Treg) alterations in endometriosis; however, the relationship remains unclear, and Tregs have not previously been investigated with respect to infertility in endometriosis. This prospective cross-sectional ... ...

    Abstract Evidence to date supports regulatory T cell (Treg) alterations in endometriosis; however, the relationship remains unclear, and Tregs have not previously been investigated with respect to infertility in endometriosis. This prospective cross-sectional cohort study details circulating and endometrial tissue-specific disturbances in Tregs and broader gated populations in women of reproductive age with and without endometriosis (n = 57 and 29, respectively) using flow cytometry and immunohistochemistry. Participants were characterised by menstrual cycle phase, r-ASRM endometriosis disease stage and fertility status.In the endometrium of women with endometriosis, endometrial Tregs and CD4+ lymphocyte proportions did not change between the proliferative and secretory phases, while in women without the disease, they significantly decreased (p = 0.045 and p = 0.039, respectively). In women with endometriosis, endometrial Tregs were lower than in women without endometriosis overall (p = 0.050 as a proportion of all CD45+ immune cells). We have shown for the first time that proportions of CD4+ lymphocytes (p = 0.021), overall lymphocytes (p = 0.034) and non-granulocytes (p = 0.027) were significantly decreased in the endometrium of women with moderate-severe (r-ASRM stages III and IV) compared to minimal-mild (r-ASRM stages I and II) endometriosis. During the secretory phase, circulating Treg proportions were significantly increased in infertile compared to fertile women (p = 0.049). This study confirms differences in endometrial Tregs in women with endometriosis, with blunting of normal menstrual cyclical variations, reduced proportions during the proliferative phase and disease stage-specific relationships.
    MeSH term(s) Adult ; Cross-Sectional Studies ; Endometriosis/metabolism ; Endometrium/metabolism ; Epithelium/metabolism ; Female ; Humans ; Infertility, Female/metabolism ; Prospective Studies ; T-Lymphocytes, Regulatory/metabolism ; Young Adult
    Language English
    Publishing date 2021-06-23
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2276411-2
    ISSN 1933-7205 ; 1933-7191
    ISSN (online) 1933-7205
    ISSN 1933-7191
    DOI 10.1007/s43032-021-00658-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 4113: 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.

To top