LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 195

Search options

  1. Article ; Online: Daily Changes in Channel Occupancy in the 868 MHz ISM Band.

    Kozłowski, Sebastian / Kurek, Krzysztof

    Sensors (Basel, Switzerland)

    2022  Volume 22, Issue 24

    Abstract: Due to the rapid development of Internet of Things (IoT) systems operating in industrial, scientific and medical (ISM) frequency bands, many researchers have attempted to determine the amount of interference that can be expected in such systems. The ... ...

    Abstract Due to the rapid development of Internet of Things (IoT) systems operating in industrial, scientific and medical (ISM) frequency bands, many researchers have attempted to determine the amount of interference that can be expected in such systems. The basic information required for this purpose is the current occupancy of frequency channels in various geographical locations. It is known that the occupancy measurement must last long enough to allow for the detection of low duty cycle transmissions. In this paper, it is shown that fulfilling only this criterion may lead to unreliable results being obtained. In two measurement campaigns performed in two different locations, the occupancy of a selected sub-band in the 868 MHz ISM band was determined on the basis of two hour-long observations repeated several times a day. During a typical day, the ratio of the maximum and the minimum result depended on the location and reached a value of eight; however, on one day, a period of abnormally high channel usage reaching 65% was observed in the location in which typical values did not exceed 1%.
    Language English
    Publishing date 2022-12-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s22249928
    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.

  2. Article ; Online: Role of neuron-specific enolase as a prognostic marker in pediatric cardiac arrest.

    Kurek, Krzysztof / Tomaszewska, Monika / Pruc, Michał / Szarpak, Lukasz

    The American journal of emergency medicine

    2023  Volume 76, Page(s) 258–260

    MeSH term(s) Child ; Humans ; Biomarkers/blood ; Cardiopulmonary Resuscitation ; Heart Arrest/blood ; Heart Arrest/diagnosis ; Heart Arrest/mortality ; Out-of-Hospital Cardiac Arrest/blood ; Out-of-Hospital Cardiac Arrest/diagnosis ; Out-of-Hospital Cardiac Arrest/mortality ; Phosphopyruvate Hydratase/blood ; Prognosis
    Chemical Substances Biomarkers ; Phosphopyruvate Hydratase (EC 4.2.1.11) ; ENO2 protein, human (EC 4.2.1.11)
    Language English
    Publishing date 2023-11-29
    Publishing country United States
    Document type Letter
    ZDB-ID 605890-5
    ISSN 1532-8171 ; 0735-6757
    ISSN (online) 1532-8171
    ISSN 0735-6757
    DOI 10.1016/j.ajem.2023.11.043
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2005: 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.

  3. Article ; Online: Channel Occupancy Measurements in 868 MHz ISM Band in Residential Areas.

    Kozłowski, Sebastian / Kurek, Krzysztof

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 23

    Abstract: The rapid development of Internet of Things (IoT) has led to more and more devices using ISM frequency bands. Because they are not time synchronized, medium access collisions are unavoidable. The probability of such a collision is usually reasonably low; ...

    Abstract The rapid development of Internet of Things (IoT) has led to more and more devices using ISM frequency bands. Because they are not time synchronized, medium access collisions are unavoidable. The probability of such a collision is usually reasonably low; however, it increases with the number of transmitters competing for the same frequency channel. For this reason, ISM bands' occupancy is regularly monitored by researchers. This paper presents the results of the measurement campaign during which a selected part of the 868 MHz ISM frequency band was monitored for the presence of transmissions in six locations in various residential areas in Warsaw, Poland. For the purpose of the campaign, a dedicated measurement set-up comprising a software-defined radio (SDR) module was assembled. The measurements results showed that the channel occupancy is in most cases lower than 1% with a maximum observed value of 2%. The paper presents selected characteristics of the detected signals. Additionally, distribution over time of the detected signals was used together with the Monte Carlo simulations to analyze how long idle time blocks are available for new transmitters that could be deployed in the band under testing.
    Language English
    Publishing date 2021-11-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21237805
    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: Systemic multiple myeloma and colonic abnormalities.

    Pawlak, Katarzyna M / Khalaf, Kareem / Mönkemüller, Klaus / Kurek, Krzysztof

    VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy

    2023  Volume 8, Issue 8, Page(s) 328–329

    Abstract: Video 1Colonic abnormalities observed in the course of systemic multiple myeloma. ...

    Abstract Video 1Colonic abnormalities observed in the course of systemic multiple myeloma.
    Language English
    Publishing date 2023-07-05
    Publishing country United States
    Document type Journal Article
    ISSN 2468-4481
    ISSN (online) 2468-4481
    DOI 10.1016/j.vgie.2023.05.003
    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.

  5. Article: Azithromycin Prophylaxis in an Adolescent With PANDAS.

    Blankenship, Paul / Kurek, Kenneth

    The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG

    2019  Volume 25, Issue 1, Page(s) 61–63

    Abstract: Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS) is a type of pediatric obsessive-compulsive disorder with an acute symptom onset and periodic recurrence that is triggered by streptococcal infection. Due in ...

    Abstract Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS) is a type of pediatric obsessive-compulsive disorder with an acute symptom onset and periodic recurrence that is triggered by streptococcal infection. Due in part to the multifaceted assessment involved in the diagnosis of PANDAS and lack of consensus on the best treatment, management of these cases is complex. A background and case of PANDAS exacerbation in an adolescent patient, who presented with visuomotor impairment and was treated with azithromycin (Zithromax, Pfizer, New York, NY) prophylaxis to prevent further clinical deterioration, is described here.
    Language English
    Publishing date 2019-12-18
    Publishing country United States
    Document type Case Reports
    ZDB-ID 3028543-4
    ISSN 1551-6776
    ISSN 1551-6776
    DOI 10.5863/1551-6776-25.1.61
    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.

  6. Article ; Online: Predictive value of neutrophil gelatinase-associated lipocalin (NGAL) values for cardiac arrest outcomes: A systematic review and meta-analysis.

    Kurek, Krzysztof / Lepetit, Anne / Pruc, Michal / Surma, Stanislaw / Banach, Maciej / Rafique, Zubaid / Peacock, William Frank / Szarpak, Lukasz

    The American journal of emergency medicine

    2024  

    Language English
    Publishing date 2024-04-10
    Publishing country United States
    Document type Letter
    ZDB-ID 605890-5
    ISSN 1532-8171 ; 0735-6757
    ISSN (online) 1532-8171
    ISSN 0735-6757
    DOI 10.1016/j.ajem.2024.04.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2005: 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.

  7. Article: Predictive Performance of Neuron-Specific Enolase (NSE) for Survival after Resuscitation from Cardiac Arrest: A Systematic Review and Meta-Analysis.

    Kurek, Krzysztof / Swieczkowski, Damian / Pruc, Michal / Tomaszewska, Monika / Cubala, Wieslaw Jerzy / Szarpak, Lukasz

    Journal of clinical medicine

    2023  Volume 12, Issue 24

    Abstract: The prediction of outcomes following cardiac arrest continues to provide significant difficulties. A preferred strategy involves adopting a multimodal approach, which encompasses the careful evaluation of the biomarker neuron-specific enolase (NSE). This ...

    Abstract The prediction of outcomes following cardiac arrest continues to provide significant difficulties. A preferred strategy involves adopting a multimodal approach, which encompasses the careful evaluation of the biomarker neuron-specific enolase (NSE). This systematic review and meta-analysis aimed to gather and summarize new and existing evidence on the prediction effect of neuron-specific enolase for survival to hospital discharge among adult patients with cardiac arrest. We searched PubMed Central, Scopus, EMBASE databases, and the Cochrane Library without language restrictions from their inceptions until 30 October 2023 and checked the reference lists of the included studies. Pooled results were reported as standardized mean differences (SMDs) and were presented with corresponding 95% confidence intervals (CIs). The primary outcome was survival to hospital discharge (SHD). Eighty-six articles with 10,845 participants were included. NSE showed a notable degree of specificity in its ability to predict mortality as well as neurological status among individuals who experienced cardiac arrest (
    Language English
    Publishing date 2023-12-13
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm12247655
    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.

  8. Article: Role of Preoperative Esophagogastroduodenoscopy (EGD) in Bariatric Treatment.

    Sierżantowicz, Regina / Ładny, Jerzy R / Kurek, Krzysztof / Lewko, Jolanta

    Journal of clinical medicine

    2021  Volume 10, Issue 13

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2021-07-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm10132982
    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: Climatic conditions and prevalence of melanistic snakes-contrasting effects of warm springs and mild winters.

    Bury, Stanisław / Kolanek, Aleksandra / Chylarecki, Przemysław / Najbar, Bartłomiej / Kurek, Katarzyna / Mazgajski, Tomasz D

    International journal of biometeorology

    2022  Volume 66, Issue 7, Page(s) 1329–1338

    Abstract: Climate change is one of the greatest challenges that wildlife is facing. Rapid shifts in climatic conditions may accelerate evolutionary changes in populations as a result of strong selective pressure. Most studies focus on the impact of climatic ... ...

    Abstract Climate change is one of the greatest challenges that wildlife is facing. Rapid shifts in climatic conditions may accelerate evolutionary changes in populations as a result of strong selective pressure. Most studies focus on the impact of climatic conditions on phenologies and annual cycles, whereas there are fewer reports of empirical support for climate-driven changes in the phenotypic variability of free-living populations. We investigated whether climatic variables explain the prevalence of colour polymorphism in a population of the grass snake (Natrix natrix) with two morphotypes, the melanistic and non-melanistic ones, in the period 1981-2013. We found that the prevalence of the black phenotype was negatively related to spring temperature and winter harshness, expressed as the number of snow days. According to the thermal melanism hypothesis, a high predation rate during warmer springs may override relaxed thermal benefits and vice versa, i.e. black individuals may perform better than typical ones when thermal conditions in spring are unfavourable. In turn, because they are smaller, melanistic individuals may be exposed to a higher risk of winter mortality, particularly during longer winters. We highlight the need for more studies on the effects of climatic conditions on temporal variation in melanism prevalence in other populations and species as well as in various geographic regions.
    MeSH term(s) Animals ; Hot Springs ; Melanosis ; Prevalence ; Seasons ; Snakes
    Language English
    Publishing date 2022-04-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 280324-0
    ISSN 1432-1254 ; 0020-7128
    ISSN (online) 1432-1254
    ISSN 0020-7128
    DOI 10.1007/s00484-022-02279-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 998: 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.

  10. Article ; Online: Acute Onset Descending Paralysis in an Infant Newly Diagnosed With Pneumonia.

    Waddell, Erin / Blankenship, Paul / Putty, Krista / Kurek, Ken / Flesher, Susan / Tariq, Fatima

    Clinical pediatrics

    2022  Volume 62, Issue 2, Page(s) 147–150

    MeSH term(s) Humans ; Infant ; Pneumonia/complications ; Pneumonia/diagnosis ; Pneumonia/drug therapy ; Paralysis ; Acute Disease
    Language English
    Publishing date 2022-07-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207678-0
    ISSN 1938-2707 ; 0009-9228
    ISSN (online) 1938-2707
    ISSN 0009-9228
    DOI 10.1177/00099228221113101
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 454: 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.

To top