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Tytuł:
3D Imaging of Water Behavior at Millimeter Wavelength
Autorzy:
Sayinti, A.
Kaya, A.
Vertiy, A.
Powiązania:
https://bibliotekanauki.pl/articles/1400037.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
84.40.-x
Opis:
During the transmission of electromagnetic radiation through a medium containing water molecules, portions of the electromagnetic spectrum are absorbed by water molecules. This water absorption occurs preferentially at certain characteristic wavelengths while the balance of the spectrum is transmitted with minimal effects. This characteristic of water provides advantages but also some disadvantages in science and engineering applications. Especially in remote sensing applications, it may cause to produce incorrect information. So identification of behavior of electromagnetic wave in water is significantly important. Some of the studies based on electromagnetic wave behavior in water are bio-medical researches, sensors, transmitters, accumulators, organic-inorganic materials, and microwave ovens. In this paper, based on the water's absorption of electronic wave property, a plastic cup as half-full of water is imaged using near field microwave system. After being processed with 3D-DLL algorithm it is imaged as 3D with IRIS software. A robotic system is used for data collection process. Transmission and reflection measurements of system are done with N5230A network analyzer.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 467-469
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Career decision making in the maritime industry: research of merchant marine officers using Fuzzy AHP and Fuzzy TOPSIS methods
Autorzy:
Kaya, A. Y.
Asyali, E.
Ozdagoglu, A.
Powiązania:
https://bibliotekanauki.pl/articles/134952.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
maritime industry
individual career planning
career decision making
vessel types
Fuzzy AHP
Fuzzy TOPSIS
Opis:
Individual career planning plays a key role in achieving success, goals, and ideals in professional life. However, managing to accomplish such favorable results depends on the correct decisions of graduates to choose suitable job opportunities. Oceangoing watchkeeping officers, who are responsible for the management and administration of vessels at sea, have several job options which are differentiated by vessel type, such as; bulk carriers, chemical tankers, general cargo ships, and container ships, etc. This study aims to discuss the criteria that Turkish oceangoing watchkeeping officers take into consideration and the values they attribute to such criteria regarding their vessel type preference. The aim is to provide instructions to oceangoing watchkeeping officer candidates and academicians who are interested in these issues and related parties of maritime industry. Attribution values of the criteria are determined by means of Fuzzy Analytic Hierarchy Process (AHP) and the most preferred alternative vessel type is revealed through Fuzzy TOPSIS methodology. According to the study results, the most important factors are; revenue, perception of occupational health and safety, and labor work density. The most preferred ship type among alternatives is the oil tanker.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 55 (127); 95-103
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adult Patient Radiation Doses with Multislice Computed Tomography Exam: MSCT Standard Protocols
Autorzy:
Kara, U.
Kaya, A.
Tekin, H.
Akkurt, İ.
Powiązania:
https://bibliotekanauki.pl/articles/1031766.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.50.yk
87.57.uk
Opis:
Radiation is energy, and it is widely used in a variety of fields, especially in industry and medical science. In hospital, ionizing radiation like X-ray is an extensive exam that has been used to help physicians to have a view into the body, without having to make a medical application. Computed tomography scan uses ionizing radiation, and it is a nearly perfect diagnostic unit that allows the physician to see the picture of the human body. Computed tomography scan technology has progressed over the years, and it is an increasingly powerful and effective unit in the diagnostic radiology. Exposure to ionizing radiation is known to increase the risk of cancer. The aim of this study was to assess the radiation exposure received during computed tomography in a sample representative of the current state of practice in adult patients.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 1126-1127
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy AHP–GOAL Programming Approach for a Supplier Selection Problem
Autorzy:
Sivrikaya, B. T.
Kaya, A.
Dursun, M.
Çebi, F.
Powiązania:
https://bibliotekanauki.pl/articles/409089.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
supplier selection
fuzzy AHP
goal programming
Opis:
This paper presents an integrated evaluation approach for decision support enabling effective supplier selection and ordering processes in textile industry. The integrated evaluation method in this study includes two phases that consist of fuzzy AHP and goal programming approaches. Supplier evaluation and selection is a multi-criterion decision problem which includes both qualitative and quantitative factors. That’s why; firstly, linguistic variables expressed in trapezoidal fuzzy numbers are applied to assess weights and ratings of supplier selection criteria. Then a hierarchy multiple model based on fuzzy set theory is expressed and the geometric mean method of Buckley is used to aggregate pair wise comparisons. Finally, a goal programming model is built using the goals about coefficients of suppliers, total ordering cost, number of wrong deliveries, total delivery cost under the constraints of required minimum and maximum number of orderings and acceptable quality cost levels of each supplier and demand constraint of the product.
Źródło:
Research in Logistics & Production; 2015, 5, 3; 271-285
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructural characteristic of N2 shielding gas in coating FeCrC composite to the surface of AISI 1030 steel with PTA method
Wpływ zawartości azotu w gazie osłonowym na mikrostrukturę powłok FeCrC na stali AISI 1030 otrzymanych metodą napylania plazmowego
Autorzy:
Yildiz, T.
Kaya Gür, A.
Powiązania:
https://bibliotekanauki.pl/articles/351583.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
napylanie plazmowe
modyfikacja powierzchni
węglik chromu
mikrostruktura
plasma transferred arc coating
surface modifications
chromium carbide
chromium nitrurs
microstructure
Opis:
In this study, FeCrC powder was alloyed on the surface of AISI 1030 steel with FeCrC powder having 70% Cr ratio with the Plasma Transferred Arc Welding Method. In the coating process performed with the Plasma Transferred Arc Welding Method, N2 gas at 1-3-5% ratio was added to the shielding gas. The coating layer was analysed using optical microscope (OM), scanning electron microscope (SEM), X-ray diffractogram (XRD) and X-ray energy dispersive spectrometer (EDS). As a result of optical microscope and microstructure analyses, it was determined that the coating layer and the sub-layer were connected to each other metallurgical and there were austenite ( γ), Fe-Cr, Fe23(C)6, and Cr7C3 phase and carbides and CrN in the structure.
W pracy badano nakładanie powłok z proszku FeCrC o zawartości 70% chromu na powierzchni stali AISI 1030 metodą PTA. W czasie nakładania powłoki zawartość azotu w gazie ochronnym wynosiła 1, 3, 5%. Uzyskane powłoki badane były za pomocą mikroskopii optycznej, skaningowej mikroskopii elektronowej, dyfrakcji rentgenowskiej i mikroanalizy rentgenowskiej. W oparciu o wyniki obserwacji i analiz mikrostruktury stwierdzono, że powłoka i warstwa pośrednia połączone są ze sobą metalurgicznie. Stwierdzono obecność austenitu, Fe-Cr, Fe23(C)6, Cr7C3 oraz węglików i CrN w mikrostrukturze.
Źródło:
Archives of Metallurgy and Materials; 2011, 56, 3; 723-729
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
YIG Film for Magnetic Field Sensor
Autorzy:
Kaya, A.
Atalay, S.
Gencer, H.
Kaya, O.
Kolat, V.
Izgi, T.
Powiązania:
https://bibliotekanauki.pl/articles/1401218.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.15.Gh
84.40.Az
75.30.Ds
41.20.Jb
85.75.Ss
Opis:
Single crystal $Y_3Fe_5O_{12}$ (YIG) film was grown onto (111) oriented gadolinium gallium garnet (GGG) substrate by the liquid phase epitaxy (PLD) technique. The X-ray diffraction measurements showed that epitaxial growth of the film along its (111) axis. The surface characteristic was investigated by atomic force microscopy (AFM) measurement. The magnetic field sensor consisted of a rectangular shape with 5 mm wide, 15 mm long and 5 μm thick YIG film and a pair of identical 50 μm wide microstrip copper transducers elements separated by 6 mm. The filter was tested by measuring reflection $S_{11}$ characteristic at various bias magnetic fields. The results have showed that when the bias field increased from 0 to 2.5 kOe, the frequency value corresponding to $S_{11}$ maxima increased from 1 GHz to 9 GHz. This suggests that the wide range magnetic field sensing and the highly sensitive field sensing are simultaneously fulfilled with the YIG film.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 937-939
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Chip Amount on Microstructural and Mechanical Properties of A356 Aluminum Casting Alloy
Autorzy:
Kaya, A. Y.
Özaydın, O.
Yağcı, T.
Korkmaz, A.
Armakan, E.
Çulha, O.
Powiązania:
https://bibliotekanauki.pl/articles/2079825.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
A356
gravity casting
chip melting
mechanical properties
recycling
odlewanie grawitacyjne
topienie
właściwości mechaniczne
recykling
Opis:
Aluminum casting alloys are widely used in especially automotive, aerospace, and other industrial applications due to providing desired mechanical characteristics and their high specific strength properties. Along with the increase of application areas, the importance of recycling in aluminum alloys is also increasing. The amount of energy required for producing primary ingots is about ten times the amount of energy required for the production of recycled ingots. The large energy savings achieved by using the recycled ingots results in a significant reduction in the amount of greenhouse gas released to nature compared to primary ingot production. Production can be made by adding a certain amount of recycled ingot to the primary ingot so that the desired mechanical properties remain within the boundary conditions. In this study, by using the A356 alloy and chips with five different quantities (100% primary ingots, 30% recycled ingots + 70% primary ingots, 50% recycled ingots + 50% primary ingots, 70% recycled ingots + 30% primary ingots, 100% recycled ingots), the effect on mechanical properties has been examined and the maximum amount of chips that can be used in production has been determined. T6 heat treatment was applied to the samples obtained by the gravity casting method and the mechanical properties were compared depending on the amount of chips. Besides, microstructural examinations were carried out with optical microscopy techniques. As a result, it has been observed that while producing from primary ingots, adding 30% recycled ingot to the alloy composition improves the mechanical properties of the alloy such as yield strength and tensile strength to a certain extent. However, generally a downward pattern was observed with increasing recycled ingot amount.
Źródło:
Archives of Foundry Engineering; 2021, 21, 3; 19-26
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variation Analysis of CMOS Technologies Using Surface-Potential MOSFET Model
Autorzy:
Mattausch, H. J.
Yumisaki, A.
Sadachika, N.
Kaya, A.
Johguchi, K.
Koide, T.
Miura-Mattausch, M.
Powiązania:
https://bibliotekanauki.pl/articles/308251.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
compact model
fabrication inaccuracy
field-effect transistor
macroscopic
microscopic
potential at channel surface
silicon
within wafer
Opis:
An analysis of the measured macroscopic withinwafer variations for threshold voltage (Vth) and on-current (Ion) over several technology generations (180 nm, 100 nm and 65 nm) is reported. It is verified that the dominant microscopic variations of the MOSFET device can be extracted quantitatively from these macroscopic variation data by applying the surface-potential compact model Hiroshima University STARC IGFET model 2 (HiSIM2), which is presently brought into industrial application. Only a small number of microscopic parameters, representing substrate doping (NSUBC), pocket-implantation doping (NSUBP), carrier-mobility degradation due to gate-interface roughness (MUESR1) and channel-length variation during the gate formation (XLD) are found sufficient to quantitatively reproduce the measured macroscopic within-wafer variations of Vth and Ion for all channel length Lg and all technology generations. Quantitative improvements from 180 nm to 65 nm are confirmed to be quite large for MUESR1 (about 70%) and Lmin(XLD) (55%) variations, related to the gate-oxide interface and the gate-stack structuring, respectively. On the other hand, doping-related technology advances, which are reflected by the variation magnitudes of NSUBC (30%) and NSUBP (25%), are found to be considerably smaller. Furthermore, specific combinations of extreme microscopic parameter-variation values are able to represent the boundaries of macroscopic fabrication inaccuracies for Vth and Ion. These combinations are found to remain identical, not only for all Lg of a given technology node, but also for all investigated technologies with minimum Lg of 180 nm, 100 nm and 65 nm.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 4; 37-44
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effects of exhaust emissions of using hybrid engine in vehicles
Autorzy:
Bicer, A.
Kaya, S.
Powiązania:
https://bibliotekanauki.pl/articles/95171.pdf
Data publikacji:
2018
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
hybrid electric vehicle
hybrid drive system
hybrid engine
exhaust emissions
fuel consumption
emission standards
pojazd hybrydowy
układ napędowy hybrydowy
silnik hybrydowy
emisja spalin
zużycie paliwa
standardy emisyjne
Opis:
At the beginning of the work on the effects of global warming and climate change in the international area, there are efforts to reduce exhaust emissions. Because fossil fuel is depleting and exhaust emission gases emitted to the atmosphere are rising rapidly, energy efficiency is on the agenda in transportation. Therefore, automotive developers and scientists have undertaken new research in the automotive sector. Hybrid electric vehicle technology is one of the important studies that these researchers continue. In the hybrid electric vehicle technology, the hybrid engine is aimed to give the best results in terms of exhaust emission, fuel consumption and maintenance costs compared to other internal combustion engines, and at the same time the hybrid engine is aimed to perform better than other internal combustion engines. General information about the hybrid electric vehicle technology as one of the new and alternative technologies in these study is provided. In addition, information was given about exhaust emission, emission standards and fuel consumption. Comparisons were made between the hybrid engine and other internal combustion engines.
Źródło:
Journal of Mechanical and Energy Engineering; 2018, 2, 3; 209-216
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solvent extraction behaviour of scandium from lateritic nickel-cobalt ores using different organic reagents
Autorzy:
Ferizoglu, E.
Kaya, S.
Topkaya, Y. A.
Powiązania:
https://bibliotekanauki.pl/articles/110877.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Solvent extraction
laterites
scandium
mixed hydroxide precipitate
Opis:
Scandium is one of the most important and strategic metals that can be recovered as a by-product from lateritic nickel-cobalt ores. In this research, different extractants were investigated to extract scandium from sulphate medium by using solvent extraction method. Generally, the organic extractants are classified as acidic, neutral and basic reagents. Thus, the aim of the present study was to compare scandium extraction efficiencies of some acidic, neutral and basic organic reagents. For this reason, Ionquest 290 (Bis(2,4,4-trimethylpenthyl) phosphonic acid), DEHPA (Di(2-ethylhexyl) phosphoric acid), Cyanex 272 ((Bis(2,4,4-trimethylpentyl) phosphinic acid) which are acidic organophosphorus compounds, Cyanex 923 (Trialkyl phosphine oxide), which is a neutral organophosphorus compound, and Primene JMT, a basic extractant, were used. The extraction efficiencies of these extractants were studied with respect to the extractant concentration at the same pH and O/A (organic/aqueous) phase ratio. As a result of this study, DEHPA and Primene JMT were found to have high scandium extraction efficiencies with lower impurity co-extractions at pH=0.55 with O/A phase ratio 1/1.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 2; 538-545
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of health staff working the night shift on nutrition, anthropometric measurements, and the risk of cardiovascular disease: A sample from Samsun Province in Turkey
Autorzy:
Uzdil, Z.
Kaya, S.
Kayacan, A.G.
Özyıldırım, C.
Sökülmez Kaya, P.
Asal Ulus, C.
Powiązania:
https://bibliotekanauki.pl/articles/1918945.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Anthropometric measurements
cardiovascular disease
health staff
nutrition
shift work
Opis:
Purpose: To determine effect of working in the night shift system on nutritional status, anthropometric measurements, and risk of cardiovascular disease of health staff. Materials and Methods: This cross-sectional study was conducted between August-November 2017 at Samsun Ondokuz Mayıs University among 111 health staff. Data was collected with a questionnaire form including questions about demographic characteristics, nutritional status and anthropometric measurements. SPSS 21.0 statistical package program was used for statistical analysis and p<0.05 was considered statistically significant. Results: Based on waist circumference, 14.3% of men and 31.1% of women were at high risk, and based on waist/hip ratio, 4.8% of men and 33.3% of women were at risk of cardiovascular diseases. It has been shown that eating patterns are disrupted during shifts (89.2%), and 73.9% of participants cannot eat because their meals cool down during shifts. The difference in the numbers of main and snack meals consumed by health staff during the night shift was statistically significant (p<0.05). Body mass index, waist circumference, and hip circumference measurements decreased with increasing shift time. However, body mass index, waist circumference, and hip circumference increased as time spent in the profession increased. Conclusion: It was seen that night shift health staff are at risk of cardiovascular disease due to insufficient and unhealthy nutrition. It is clear that nutrition education programs are required for health staff working night shifts to reduce excess weight and obesity in this population.
Źródło:
Progress in Health Sciences; 2020, 10(2); 6-14
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytotoxic Effects of Different ICG Concentrations and Laser Parameters on Neuroblastoma
Autorzy:
Ak, A.
Kaya, Ö.
Coşan, D.
Gülsoy, M.
Powiązania:
https://bibliotekanauki.pl/articles/1402428.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.62.-B
87.19.XJ
Opis:
Photodynamic therapy (PDT) is a minimally invasive treatment for cancer therapy. It can be administered in combination with other treatments such as chemotherapy, radiotherapy, and surgical excision. PDT involves a photosensitizing agent that is activated by exposure to a specific wavelength of light. PDT is a cold photochemical process, there is no tissue heating. In our study, we investigated whether different laser parameters with different concentrations of indocyanine green (ICG) have cytotoxic and anti-proliferative effects on neuroblastoma. Plates were divided groups as control, only ICG concentrations (25 and 50 μg/ml), only laser treatment I (50 J/cm²), only laser treatment II (100 J/cm²), 25 μg/ml ICG + laser treatment I and 25 μg/ml ICG + laser treatment II, 50 μg/ml ICG + laser treatment I and 50 μg/ml ICG + laser treatment II. Neuroblastoma cell lines were irradiated with an in-house developed diode laser system (λ=809 nm, 70 mW/cm², 50 & 100 J/cm²) in continuous wave operation mode after ICG application. Cell proliferation was measured by XTT assay after light irradiation. Cell proliferation was decreased in a dose-dependent manner in 25 and 50 μg/ml ICG concentrations when compared with control. The applied ICG concentrations (especially 50 μg/ml) had cytotoxic effects for neuroblastoma cell lines, SH-SY5Y. There was no difference between laser treatment groups (L 50 & 100 J/cm²). However, PDT groups (laser exposure with ICG) showed significant inhibition of cell viability (p<0.05). Additionally, laser exposure did not increase the well temperature above the incubation parameter. In conclusion, PDT has cytotoxic effects in neuroblastoma cell lines. Appropriate ICG dose - laser parameter combinations must be determined for each cell type. Different energy densities may cause different effects of PDT on inhibition of cell viability.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-381-B-383
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
La-Based Material for Energy Storage Applications
Autorzy:
Atalay, F.
Kaya, H.
Bingol, A.
Asma, D.
Powiązania:
https://bibliotekanauki.pl/articles/1032059.pdf
Data publikacji:
2017-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
82.47.Uv
Opis:
In this work, nanostructured La-based materials were produced by chemical precipitation method onto Cladosporium cladosporioides fungal hyphae in aqueous solution. Materials were annealed at various temperatures between 100°C-600°C. The morphological properties of the synthesized material were studied by transmission electron microscopy. The surface area for sample annealed at 360°C was determined to be 85.64 m²/g using Brunauer-Emmett-Teller method. The nitrogen adsorption and desorption isotherm displayed a typical type-IV isotherm. Electrochemical properties of produced material were studied using cyclic voltammetry, long term charge/discharge analysis and impedance spectroscopy in the 0.5 M Na₂SO₄ electrolyte. The obtained nanostructured porous electrode exhibits quasi-rectangular shaped cyclic voltammetry curves with a specific capacitance of 2190 F/g at a scan rate of 2 mV/s.
Źródło:
Acta Physica Polonica A; 2017, 131, 3; 453-456
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect organogenesis from bud explants of Juniperus communis L.: Effects of genotype, gender, sampling time and growth regulator combinations
Autorzy:
Kocer, Z.A.
Gozen, A.G.
Onde, S.
Kaya, Z.
Powiązania:
https://bibliotekanauki.pl/articles/41199.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Opis:
Common juniper (Juniperus communis L.) is a valuable tree species in forestry and source of many natural products. However, natural regeneration of common juniper is difficult. To develop micropropagation procedures for this species callus induction and organogenesis experiments were carried out. It was found that genotype, gender, sampling time and different growth regulator-combinations had significant effects on callus induction in common juniper. Murashige and Skoog medium supplemented with Benzylaminopurine 0.1 mg l–1and indole-3-butyric acid at concentrations ranging between 0.5–4.0 mg l–1 were the best among the treatments to induce callus formation when spring buds were used as explant sources. In organogenesis experiments, the combination of 2 mg l–1 Benzylaminopurine and 1 mg l–1 2,4-Dichlorophenoxyacetic acid was found to be essential to bring about adventitious bud and shoot development from calli. Genotype, gender and sampling times had significant effects on promoting adventitious bud and shoot development. Although several experimental trials with 0.005, 0.03 and 0.05 mg l–1 indole-3-butyric acid and varying media compositions produced adventitious root like structures, none of these structures further developed into a true root system. However, the results of this pioneering study provide a foundation for further experiments concerning the in vitro regeneration of common juniper.
Źródło:
Dendrobiology; 2011, 66
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction and classification of pressure injuries by deep learning
Wykrywanie i klasyfikacja odleżyn z wykorzystaniem deep learning
Autorzy:
Yilmaz, A.
Kızıl, H.
Kaya, U.
Cakır, R.
Demiral, M.
Powiązania:
https://bibliotekanauki.pl/articles/2047948.pdf
Data publikacji:
2021
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
deep learning
pressure ulcers
artificial intelligence
nursing care
odleżyny
sztuczna inteligencja
opieka pielęgniarska
Opis:
Pressure injuries are a serious medical problem that both negatively affects the patient's quality of life and results in significant healthcare costs. In cases where a patient doesn’t receive appropriate treatment and care, death may result. Nurses play critical roles in the prevention, care, and treatment of pressure injuries as members of the healthcare team who closely monitor the health status of the patient. Today, the use of artificial intelligence is becoming more prevalent in healthcare, as in many other areas. Artificial intelligence is a method that aims to solve complex problems by using computers to mathematically simulate the way the brain works. In this article, we compile and share information about a deep learning model developed for the detection and classification of pressure injuries. Deep learning can operate on many types of data. Convolutional Neural Networks (CNN) prefer images because they can handle 2D arrays. In this case, the images, annotated according to the National Pressure Injury Advisory Panel pressure injury classification system, have been fed into a deep learning model using CNN. The developed CNN model has a 97% success in detecting and classifying pressure injuries, and as more images are collected and fed into the CNN, the prediction accuracy will increase. This deep learning model allows for the automatic detection and classification of pressure injuries, an indicator of health outcomes, at an early stage and for quick and accurate intervention. In this context, it is expected that the quality of nursing care will increase, the prevalence of pressure injury will decrease, and the economic burden of this health problem will decrease.
Odleżyny są problemem zdrowotnym, który negatywnie wpływa na jakość życia pacjenta i powoduje poważne koszty opieki. W przypadku braku odpowiedniego leczenia i opieki może to doprowadzić do śmierci pacjenta. Pielęgniarki odgrywają kluczową rolę w zapobieganiu, opiece i leczeniu odleżyn jako członkowie zespołu opieki zdrowotnej, którzy ściśle i stale monitorują stan zdrowia danej osoby. Obecnie w dziedzinie zdrowia, podobnie jak w wielu innych dziedzinach, coraz częściej wykorzystuje się sztuczną inteligencję. Sztuczna inteligencja jest metodą, która ma na celu rozwiązywanie złożonych problemów poprzez matematyczne symulowanie sposobu działania mózgu z wykorzystaniem komputerów. Niniejszy artykuł jest przeglądem zaprojektowanym w celu podzielenia się informacjami na temat modelu deep learning opracowanego do wykrywania i klasyfikacji odleżyn. Deep learning może działać na wielu typach danych. Konwolucyjne sieci neuronowe (ang. convolutional neural networks, CNN) preferują obrazy, ponieważ mogą obsługiwać macierze 2D. Obrazy, uporządkowane zgodnie z systemem klasyfikacji odleżyn według National Pressure Injury Advisory Panel (NPIAP), zostały przekształcone w "Deep Learning Model" z wykorzystaniem CNN. Opracowywany model CNN ma 97% skuteczności w wykrywaniu i klasyfikowaniu odleżyn, a im więcej obrazów zostanie zebranych i wykorzystanych w CNN, tym większe będzie prawdopodobieństwo trafnej prognozy. Ten model deep learning daje możliwość automatycznego wykrywania i klasyfikacji odleżyn, które są wskaźnikiem jakości zdrowia, na wczesnym etapie oraz dokładnej i szybkiej interwencji. W tym kontekście oczekuje się, że jakość opieki pielęgniarskiej wzrośnie, zmniejszy się częstość występowania odleżyn oraz obciążenie ekonomiczne związane z tym problemem zdrowotnym.
Źródło:
Health Problems of Civilization; 2021, 15, 4; 328-335
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 17

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