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Tytuł:
A Comparism of the Response of Some Pearl Millest (Pennisetum glaucum (L.) R. BR) Hybrids and Their Parents to Downy Mildew (Sclerospora graminicola) Infestation in Bakura and Zaria (North-western Nigeria)
Autorzy:
Maryam, Ati H.
Angarawai, I. I.
Powiązania:
https://bibliotekanauki.pl/articles/1178552.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
downy mildew
hybrids
obligate biotrophs
resistant
tolerance
Opis:
Downy mildew (Sclerospora graminicola (Sacc) Schroet.) of pearl millet [Pennisetum glaucum (L.) R.Br.] is a devastating disease that has greatly led to grain yield loss in Nigeria. A field experiment was carried out in 2010 at Bakura (Zamfara State) and Zaria (Kaduna State) in North West Nigeria. The objective of this paper was to evaluate downy mildew resistance in some pearl millet using Complete Randomized Block Design. Four resistant male varieties (PEO5532, SOSATC88, P1449 and DMR15) and four susceptible female varieties (BDP1, MOP1, LCIC9702 and PEO5984 were used in this study. The resistant varieties were crossed with the susceptible varieties using North Carolina design 11 for the mating to form sixteen (F1) hybrids. The F1 hybrids were further evaluated along with their parents for downy mildew resistance, grain yield and other agronomic traits (such as: Plant height, panicle height, number of tillers per plant, panicle diameter and number panicles per plot). The resistant male parents were found to be susceptible while none of the hybrids was resistant to downy mildew. However, the degree of incidence and severity of downy mildew disease defer in the two locations. The hybrids exhibited tolerance to downy mildew disease and their yields were higher than their parents. The analysis of variance (one tale ANOVA or which one?) showed highly significant difference among parents and hybrids for all agronomic characters except disease severity and number of tillers per plant. Location × genotype interaction effects were only significant for grain yield and number of panicles per plot.
Źródło:
World Scientific News; 2017, 70, 2; 252-264
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Probabilistic Model of Optimising Perforated High-Strength Steel Sheet Assemblies for Impact-Resistant Armour Systems
Probabilistyczny model optymalizacji układów perforacji blach z wysokowytrzymałych stali do zastosowań w systemach osłon antyudarowych
Autorzy:
Burian, W.
Marcisz, J.
Starczewski, L.
Wnuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/403490.pdf
Data publikacji:
2017
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
mechanics
impact-resistant shields
nanostructural bainite steel
perforated sheet
mechanika
osłony antyudarowe
nanostrukturalna stal bainityczna
blachy perforowane
Opis:
This paper presents a concept for optimising an assembly of perforated metal sheets with a probabilistic theory, and the results of testing perforated bainite steel sheets with a nanocrystalline structure. The work presented herein was completed with an assumption of applying the perforated sheets in the design of anti-armour-piercing and anti-HEAT armour systems. The theoretical analysis and experimental research were performed for a 7.62 x 54R B-32 (API) projectile and a PG-7 rocket-propelled grenade.
W artykule przedstawiono koncepcję optymalizacji układu perforacji blach na podstawie teorii probabilistycznej oraz wyniki badań blach perforowanych wykonanych ze stali bainitycznej o strukturze nanokrystalicznej. Prace zrealizowano w kierunku zastosowania płyt perforowanych w konstrukcjach osłon przeciwko pociskom przeciwpancernym oraz głowicom kumulacyjnym. Analizy teoretyczne i badania eksperymentalne przeprowadzono dla naboju 7,62 x 54R z pociskiem B-32 oraz granatu PG-7.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2017, 8, 1 (27); 71-88
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on alkali resistant glass fibre concrete and its exposure to elevated temperatures
Autorzy:
Hussain, S.
Yadav, J. S.
Powiązania:
https://bibliotekanauki.pl/articles/1818818.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
alkali resistant glass fibres
accelerated carbonation
compressive strength
thermogravimetric analysis
scanning electron microscopy
split tensile strength
włókna szklane
alkalia
karbonatyzacja
przyspieszenie
wytrzymałość na ściskanie
analiza termograwimetryczna
skaningowa mikroskopia elektronowa
wytrzymałość na rozciąganie
Opis:
Purpose: Cement concrete is characterized as brittle in nature, the loading capacity of which is completely lost once failure is initiated. This characteristic, which limits the application of the material, can in one way be overcome by the addition of some small amount of short randomly distributed fibers (steel, glass, synthetic). Design/methodology/approach: The present study deals with the inclusion of alkali resistant glass fibers in concrete by percentage weight of cement. The mechanical properties such as compressive strength and split tensile strength have been studied after exposing the concrete samples to elevated temperatures of up to 500°C. Water binder ratios of 0.4, 0.45, 0.5, 0.55 and 0.6 have been used to prepare design mix proportions of concrete to achieve a characteristic strength of 30 MPa. The depth of carbonation post elevated temperature exposure has been measured by subjecting the concrete samples to an accelerated carbonation (5%) condition in a controlled chamber. Findings: Conclusions have been drawn in accordance to the effect of fiber replacement and temperature increment. The concrete mixes with fiber content of 1% by weight of cement had shown better strength in compression and tension compared to the other dosages and conventional concrete (without fiber). Microcracking due to internal stream pressure reduced the mechanical strengths of concrete at elevated temperatures. Also, from TGA it was observed that the amount of calcium carbonate in samples with fiber added, post carbonation was less than the mixes without fiber in it. Research limitations/implications: The present study has been limited to alkali resistant glass fibers as the conventional glass fibers undergo corrosion due to hydration. Practical implications: The glass fiber reinforced concrete can be used in the building renovation works, water and drainage works, b ridge and tunnel lining panels etc. Originality/value: Based upon the available literature, very seldom the studies are addressing the behaviour of alkali resistant glass fiber concrete and its exposure to elevated temperatures.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2020, 103, 1; 5--15
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Abrasion Wear Behavior of High-chromium Cast Iron
Autorzy:
Pokusová, M.
Brúsilová, A.
Šooš, L'.
Berta, I.
Powiązania:
https://bibliotekanauki.pl/articles/382053.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wear resistant alloys
mechanical properties
high chromium cast iron
abrasion resistance
stopy odporne na zużycie
właściwości mechaniczne
żeliwo wysokochromowe
odporność na ścieranie
Opis:
High-chromium cast irons are used as abrasion resistant materials. Their wear resistance depends on quantity of carbides and the matrix supporting these carbides. The paper presents the results of cast irons of chemical composition (in wt. %) 19–22 Cr and 2–4.5 C alloyed by 1.7 Mo + 5 Ni + 2 Mn to improve their toughness, which were tested in working conditions of ferroalloys crushing. Tests showed that these as-cast chromium cast irons with mostly austenitic matrix achieved the hardness of 38-45 HRC, but their relative abrasion resistance Ψ ranged from 1.3 to 4.6, was higher comparing to the tool made from the X210Cr12 steel heat treated on hardness 61 HRC. The transformation of austenite into martensite occurs not only at the worn strained areas (on a surface of scratch) but also in their neighbourhood. Due to the work hardening of relatively large volumes of transformed austenite the cast iron possesses high abrasion resistance also on the surfaces where low pressures are acting. The tough abrasion-resistant cast iron well proved for production of dynamic and wear stressed castings e.g., crusher hammers, cutting tools for ceramic etc.
Źródło:
Archives of Foundry Engineering; 2016, 16, 2; 69-74
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acinetobacter Baumannii Nosocomial Infections
Autorzy:
Sieniawski, Karol
Kaczka, Krzysztof
Rucińska, Monika
Gagis, Ludmiła
Pomorski, Lech
Powiązania:
https://bibliotekanauki.pl/articles/1396395.pdf
Data publikacji:
2013-09-01
Wydawca:
Index Copernicus International
Tematy:
Acinetobacter baumannii
nosocomial infections
multidrug-resistant
Opis:
Nosocomial infections caused by strains Acinetobacter baumannii strands are a growing clinical problem. The occurrence of multidrug-resistant strands is observed and that limits the ways of therapy considerably. The aim of the study was to determine the rate of infection and susceptibility spectrum of the species Acinetobacter baumannii isolated from patients treated at Maria Skłodowska-Curie Memorial Hospital in Zgierz with particular emphasis on surgical wards. Materials and methods. The material consisted of Acinetobacter baumannii isolates were obtained from samples of materials from patients treated at Maria Skłodowska-Curie Memorial Hospital in Zgierz from January to December 2011. Isolated bacterial strains were cultured at microbiological substrates. Isolates were identified to species using the VITEK 2 GN card (bioMérieux) and Vitek 2 automated system (bioMérieux). Susceptibility towards antibiotics of particular strains was determined by the means of AST NO 93 card. In the case of resistance towards carbapenem, the MIC was marked by E-test with Mueller Hinton substrate. The occurrence of MBL was verified by the means of disc system with Mueller Hinton substrate. Results. We have shown that total number of Acinetobacter baumannii infections at hospital was 140 (10,31% of total results of cultures). Percentage of Acinetobacter baumannii infections at wards: Intensive Care Unit 48%, Surgical Departments 20%, Internal Diseases Department 16%, Neurology 13%, other wards - 3%. The susceptibility percentage of Acinetobacter Baumannii against antibiotics: colistin 90%, imipenem 64%, meropenem 43%, ampicillin-sulbactam 28%, amikacin 27%, gentamicin 24%, cefepime 9%, ceftazidime 7%, ciprofloxacin 7% Conclusions. Acinetobacter baumannii infections are a significant proportion of nosocomial infections. Most relate to surgical wards and ICUs. Acinetobacter baumannii is resistant against most antibiotics. The highest percentage of sensitivity demonstrated for colistin and carbapenems
Źródło:
Polish Journal of Surgery; 2013, 85, 9; 483-490
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced patented protective nanomaterials and coatings
Autorzy:
Figovsky, O.
Beilin, D.
Leykin, A.
Powiązania:
https://bibliotekanauki.pl/articles/411557.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
chemical resistant materials
polymeric materials for coatings
hybrid nonisocyanate urethane-epoxides
nanostructured hybrid oligomer composition
rubber-based compositions
organic-mineral coatings
Opis:
Review of the advanced patents in the field of corrosion resistant coatings and composite polymer materials by company Polymate LTD.-INRC (Israel) and its employees. The review includes patents used by the industry of several countries of Europe, USA, Canada and Asia.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 10, 1; 102-109
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alluvial bottom geology inferred as a factor controlling channel flow along the Middle Vistula River, Poland
Autorzy:
Falkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/2059483.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
alluvial basement
erosion resistant deposits
Middle Vistula River Valley
channel zone
stream zone
Opis:
Within the channel zone of the Middle Vistula River, elevations of the Holocene alluvial basement occur, composed of deposits resistant to erosion. In this paper two kinds of such forms are discussed. Within the Małopolska gorge (an upstream part of the Middle Vistula, near Kępa Gostecka and Zakrzów), the elevations are composed mainly of Upper Cretaceous and Paleogene rocks covered with clayey debris and residual lags. Below this, the elevations are built of Paleogene and Neogene soils as well as of various Pleistocene glacial deposits, and are of ten covered by residual lags. This type of valley stretch occurs in the vicinity of Dęblin. The surface of the erosion-resistant Holocene alluvial basement averages at 5-7 m below the mean water level. It is exposed on the channel bottom during high-water stages, as seen from a residual layer and from the low density of the contemporary channel deposits above them. The morphology of these elevations influences the pattern of the main stream also during mean-water stages. The trend to flood flow concentrations is also seen in the relief of the floodplain.
Źródło:
Geological Quarterly; 2007, 51, 1; 91-102
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternatywne sposoby leczenia padaczki
Alternative methods in the treatment of epilepsy
Autorzy:
Klimek, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1057824.pdf
Data publikacji:
2012
Wydawca:
Medical Communications
Tematy:
padaczka lekooporna
dieta ketogenna
immunoglobuliny
blokery kanałów wapniowych
statyny
resistant epilepsy
ketogenic diet
immunoglobulins
calcium channel blockers
statin
Opis:
In spite of introduction of new generations of antiepileptic drugs, management of drug resistant epilepsy is still an unsolved issue. Therefore, we need an entirely new approach to the problem of lack of desired therapeutic effect in epilepsy, particularly when consecutive multidrug regimen proves ineffective. As some children respond favourably to ketogenic diet, the author suggests its use in adult patients too. Furthermore, legitimacy of this therapeutic modality has been confirmed by rigorous trials performed in this age group. Spectrum of possible applications of immunoglobulins in medicine, including neurology, is expanding continuously. Formerly, immunoglobulins were recommended in children with chronic epilepsy and concomitant immune deficit. Reduction of seizure frequency of after administration of immunoglobulins has been observed. Research has also focused on calcium channel blockers, as they may play a role in the pathogenesis of some types of seizures. Verapamil as added drug may also reduce the severity of seizures. Other blockers do not have such properties, but possible effects of vinpocetine are noteworthy. Statins are another important group of drugs contributing to reduction of seizures, particularly atorvastatin. Its antiepileptic effect is independent of cholesterol level reduction.As an adjuvant drug, it is often recommended in the elderly. To sum up, in properly managed drug resistant epilepsy, implementation of one of these treatment options should be considered.
Problem padaczki lekoopornej, mimo pojawiających się kolejnych leków przeciwpadaczkowych nowej generacji, nadal pozostaje nierozwiązany. Oznacza to, że potrzebne jest nowe podejście do problemu braku pożądanego efektu terapeutycznego w padaczce, zwłaszcza w przypadku nieskuteczności stosowania 2-3 leków, stanowiących czwartą już kombinację preparatów. Ponieważ dieta ketogenna u części dzieci przynosi dobre rezultaty, autor poniższej pracy jest zdania, że można ją stosować także u dorosłych. Dodatkowo zasadność tego sposobu leczenia potwierdzają odpowiednie badania przeprowadzone w tej grupie wiekowej. Zakres stosowania immunoglobulin w medycynie, również w neurologii, stale się poszerza. Przed laty immunoglobuliny były zalecane u dzieci z padaczką z towarzyszącymi niedoborami immunologicznymi. Zaobserwowano, że po podaniu immunoglobulin zmniejszała się częstość napadów padaczkowych. Zainteresowanie badaczy skupiło się także na blokerach kanałów wapniowych w kontekście padaczki. Biorą one udział w patogenezie niektórych rodzajów napadów. Udowodniono, że zastosowanie werapamilu jako leku wspomagającego zmniejsza liczbę napadów padaczkowych. Inne blokery nie posiadają takich właściwości, ale uwagę zwraca potencjalne działanie winpocetyny. Drugą ważną grupę leków prowadzących do redukcji napadów padaczkowych stanowią statyny, a zwłaszcza atorwastatyna. Jej efekt przeciwdrgawkowy nie zależy od obniżenia poziomu cholesterolu. Preparat ten jako lek wspomagający jest szczególnie polecany u osób starszych. Reasumując, w prawidłowo leczonej padaczce lekoopornej, przy utrzymujących się napadach, należy rozważyć dołączenie jednego z omawianych leków.
Źródło:
Aktualności Neurologiczne; 2012, 12, 1; 13-17
1641-9227
2451-0696
Pojawia się w:
Aktualności Neurologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza opłacalności ochrony chemicznej przed chwościkiem buraka (Cercospora beticola sacc.) na odmianach odpornych
Analysis of effectiveness of chemical protection against cercospora leaf spot (Cercospora beticola sacc.) on sugar beet resistant varieties
Autorzy:
Górski, Dariusz
Piszczek, Jacek
Ulatowska, Agnieszka
Gaj, Renata
Powiązania:
https://bibliotekanauki.pl/articles/2057056.pdf
Data publikacji:
2015-09-23
Wydawca:
Centrum Doradztwa Rolniczego w Brwinowie. Oddział w Poznaniu
Tematy:
chwościk buraka
odporność odmian
wskaźnik pokrycia kosztów
Cercospora beticola
resistant varieties
cost coverage ratio
Opis:
W latach 2013–2014 w miejscowości Koniczynka koło Torunia przeprowadzono dwuczynnikowe doświadczenie poletkowe, którego celem była ocena efektywności ekonomicznej ochrony fungicydowej pięciu odmian odpornych na chwościka buraka. Czynnikami doświadczalnymi były odmiany buraka cukrowego (Finezja, Gallant, Jagusia, Milton, Pikador) oraz ochrona fungicydowa przed chwościkiem buraka (obiekt kontrolny oraz obiekt chroniony). Pod koniec wegetacji oceniono indeks porażenia roślin przez chwościka buraka oraz oznaczono plon korzeni. Efektywność ekonomiczną ochrony chemicznej przed chwościkiem buraka obliczono za pomocą wskaźnika pokrycia kosztów (Wpk) oraz orientacyjnych wskaźników opłacalności E1 i E2. Stosowanie ochrony chemicznej przeciw chwościkowi buraka w warunkach niskiej presji patogena na odmianach odpornych skutkowało istotnym spadkiem indeksu porażenia liści, co przyczyniło się do wzrostu plonu korzeni. Przy czym, nadwyżka produkcji rekompensowała koszty zabiegów w przypadku dwóch spośród pięciu badanych odmian.
Economic efficiency of plant fungicide protection of five resistant against Cercospora leaf spot sugar beet varieties were tested in two factor experiment on plots in 2013-2014. Sugar beet varieties (Finezja, Gallant, Jagusia, Milton and Pikador) and chemical protection against Cercospora leaf spot (protected and unprotected plots as a control) were factor of experiment. The index of leaf infection by Cercospora beticola and root yield were estimated at the late vegetation time. Economic effectiveness of fungicide protection against C. beticola were calculated using cost coverage ratio (Wpk) and rough profitability index E1 and E2. Protection of resistant sugar beet varieties in low pathogen pressure condition resulted in significant reduction of infection index and root yield increase. Yield increase compensated cost of fungicide protection in case of two among five varieties.
Źródło:
Zagadnienia Doradztwa Rolniczego; 2015, 81, 3; 94-102
1232-3578
2719-8901
Pojawia się w:
Zagadnienia Doradztwa Rolniczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza właściwości cieplnych betonu z kruszywem z odpadów ceramiki sanitarnej
Analysis of thermal properties of concrete made using aggregate from sanitary ceramic wastes
Autorzy:
Zegardło, T.
Halicka, A.
Powiązania:
https://bibliotekanauki.pl/articles/390332.pdf
Data publikacji:
2011
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
akumulacja cieplna
beton żaroodporny
odpady ceramiki sanitarnej
heat accumulators
heat-resistant concrete
ceramic sanitary waste
Opis:
Praca niniejsza stanowi kontynuację badań nad betonem wykonanym z użyciem kruszywa uzyskanego z odpadów ceramiki sanitarnej. Wcześniejsze badania dowiodły wysokiej wytrzymałości tego betonu i jego odporności na wysokie temperatury. Szukając optymalnych zastosowań takiego betonu dokonano badań i analiz jego zdolności do akumulacji cieplnej. W pracy zrelacjonowano eksperyment polegający na badaniu zachowania się, podczas studzenia, betonu na kruszywie ceramicznym na tle innych materiałów budowlanych. Na tej podstawie oraz wykonanych obliczeń oceniono jego zdolność do akumulacji cieplnej. Stwierdzono, że beton wykonany na bazie kruszywa z odpadów ceramiki sanitarnej można rekomendować jako materiał akumulujący ciepło.
This paper is a continuation of research on concrete made using aggregates derived from sanitary ceramic wastes. Previous studies have shown that it is high strength concrete resistant to high temperatures. Looking for the optimal use of such concrete tests and analysis of its thermal accumulation were executed. The behavior during cooling of this concrete in comparison to other building materials was observed. The calculations of its thermal accumulation were made. It was found that concrete made on the basis of aggregate from waste sanitary ceramics can be recommended as a heat accumulating material.
Źródło:
Budownictwo i Architektura; 2011, 9, 2; 39-49
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyses of the genes involved in disease development to construct disease-resistant plants by genetic engineering
Autorzy:
Tsuyumu, S.
Hirata, H.
Powiązania:
https://bibliotekanauki.pl/articles/385202.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
genes
analyses
disease-resistant
genetic engineering
Opis:
Many genes responsible for the disease development were identified from transposon-tagging, micro-array, and proteomics analyses. Here, we introduce especially the genes required for the initiation of pathogenic life cycle, the suppression of otherwise induction of resistance responses, massive production of virulence factors in plant pathogenic bacteria and an unique plant gene responsible for the development of canker symptom. From these findings we came to raise some new strategies to construct disease-resistant plants by genetic engineering.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 84-86
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Acinetobacter baumannii resistance patterns in patients with chronic obstructive pulmonary disease (COPD) in terms of choice of effective empiric antibiotic therapy
Autorzy:
Grochowalska, Aneta
Kozioł-Montewka, Maria
Sobieszczańska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/989765.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
copd
antibiotics
acinetobacter baumannii
multidrug-resistant strains
co-infection
Opis:
Introduction. Multi-resistant Acinetobacter baumannii isolated from patients has become one of the most hazardous pathogens in health care settings. The aim of the study was to analyze pneumonia caused by Acinetobacter baumannii in patients hospitalized because of exacerbation of chronic obstructive pulmonary diseases (COPD), who were admitted to the Pulmonology Ward of the Masovian Specialistic Hospital in Radom (MSS). The incidence and drug sensitivity of these non-fermenting rods were evaluated, and compliance with antimicrobial procedure with the algorithm of the guidelines in applicable recommendations, was estimated. This should result in determining the local patterns of resistance and verifying therapeutic procedures in accordance with the assumptions of hospital antibiotic policy. In addition, the study examined the effectiveness of empiric and targeted therapy according to the clinical condition of the patient, and the eradication of A. baumannii, in comparison with the aggravating factors of the patient. Materials and Method. The retrospective study included 90 patients with exacerbation of COPD whose etiological factor of infection was A. baumannii, hospitalized in the Department of Pulmonology (MSS) in 2012–2016. Results. Studies were conducted on 90 patients with COPD exacerbation from which A. baumannii was isolated. Co-infections with other bacterial species among 41 patients were additionally noted. The majority of A. baumannii strains showed a high resistance (90%) to fluoroquinolones, ceftazidime, piperacillin/tazobactam. For strains causing a co-infection, drug resistance was successively 44–56%, 44%, 44%. All of patients received empirical therapy. The most commonly used drug was amoxicillin with a clavulanic acid, often combined with fluoroquinolone. This type of therapy was effective among 10% of patients. The mortality in this group was determined at 29%. Among 79% of patients with COPD, a targeted therapy was performed which proved to be effective in 58% of treated cases by susceptibility testing. The highest efficacy was observer after the use of colistin and carbapenems. Conclusion. In the performed study, the infections caused by multi-resistant Acinetobacter baumannii, were observed in COPD, which should be taken into consideration in choosing empirical antibiotic therapy. Simultaneously, the local resistance patterns of multi-drug-resistant (MDR) Gram-negative strains co-infecting COPD should be considered in empirical treatment. Moreover, both additional clinical complication and co-infections contribute to a more severe course of diseases. In this study, the mortality percent exceeded 29%.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the AOK Plus data and derived hospital network
Analiza danych AOK Plus i zbudowanej na ich podstawie sieci szpitalnej
Autorzy:
Lonc, Agata
Piotrowska, Monika Joanna
Sakowski, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/953416.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
healthcare data analysis
overlapping data
healthcare network
multidrug-resistant bacteria
Opis:
We present analysis of admission/discharge data from insurance provider for Saxony and Thuringia (Germany) for years 2010-2016. Study of such data is necessary to derive a structure of healthcare system transfer network, as no patients' transfer data are available. Hospital network is a basis for simulation of multidrug-resistant bacteriae spread allowing to study the effectiveness of disease-control strategies. In this paper, the properties of the dataset under consideration are presented and discussed. Moreover, the resulting interhospital network structure is analyzed.
Źródło:
Mathematica Applicanda; 2019, 47, 1
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anodic Oxide Coatings on Aluminium Resistant to Strong Alkali Environment
Autorzy:
Kozik, A.
Nowak, M.
Gędłek, K.
Leśniak, D.
Zasadziński, J.
Jurczak, H.
Powiązania:
https://bibliotekanauki.pl/articles/355544.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
anodic coating
sealing of anodic coatings
resistant to strong alkali environment
sealing quality
aluminium alloys
Opis:
The aim of this paper was to test currently available on the market products for sealing anodic oxide coatings as well as to test the use of other alternative substances improving the sealing process. The ability to seal in 10 different solutions and the quality of the seal has been tested. The influence of the applied preparations on corrosion resistance and resistance to strongly alkaline environment was also investigated. Based on the results obtained, satisfactory results were archived for the sample sealed in a IMN-OML (Institute of Non-Ferrous Metals in Gliwice, Light Metals Division) solution sealant and in solution of nickel acetate in a medium-temperature process. Sealing by means of nickel acetate solutions is economically justified, and its use allows the process temperature to be lowered. When it comes to resistance to alkalis, samples sealed in IMN-OML sealant are the best. Commercial solutions have also achieved positive results in all tests.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1335-1342
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibiotic resistance of bacteria and incidence of carbapenamase-coding genes blaPER and blaGES in isolates from wastewater treatment plants
Autorzy:
Jendrzejewska, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/1178215.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
antibiotics-resistant bacteria
genes
pollution
wastewater
Opis:
The increase in number of antibiotic resistant bacteria poses a serious environmental and health problem. The development of microbial resistance is intensified by the widespread use of antibiotics in medicine, veterinary, farming and aquaculture. The wastewater treatment plants receiving the wastewater from hospitals, slaughterhouses, farms, pharmaceutical industry and houses can be potential places of spreading of antibiotic resistant genes. The molecular mechanisms of the bacterial resistance, including the horizontal transfer of antibiotic resistant genes and the presence of mobile genetic elements can be responsible for the increase in antibiotic resistance during wastewater treatment. The aim of this study was to analyze the phenomenon of bacterial resistance to selected β-lactam antibiotics (ESBL) by detecting the genes that determine this resistance. The PCR method was used to analyze the occurrence of two genes: blaPER and blaGES in wastewater samples. It was revealed that the resistant/total bacteria ratio was significantly higher in the effluent compared with the influent wastewater. Genes blaPER and blaGES were isolated from several strains predominating in both aeration tank (5% and 20% respectively) and effluent wastewater (15% and 12% respectively).
Źródło:
World Scientific News; 2018, 93; 30-39
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 189

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