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Wyświetlanie 1-15 z 1266
Tytuł:
Carrier concentration and in-plane mobility in both non-intentionally and Si-doped InAsSb and InAs/InAsSb type-II superlattice materials for space-based infrared detectors
Autorzy:
Morath, Christian P.
Casias, Lilian K.
Umana-Membreno, Gilberto A.
Webster, Preston T.
Grant, Perry C.
Maestas, Diana
Cowan, Vincent M.
Faraone, Lorenzo
Krishna, Sanjay
Balakrishnan, Ganesh
Powiązania:
https://bibliotekanauki.pl/articles/2204224.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
III-V infrared detectors
Bulk InAsSb
InAsSb/InAs superlattice
mobility
carrier concentration
Opis:
The sensitivity of III-V-based infrared detectors is critically dependent upon the carrier concentration and mobility of the absorber layer, and thus, accurate knowledge of each is required to design structures for maximum detector performance. Here, measurements of the bulk in-plane resistivity, in-plane mobility, and carrier concentration as a function of temperature are reported for non-intentionally doped and Si-doped mid-wave infrared InAs₀.₉₁Sb₀.₀₉ alloy and InAs/InAs₀.₆₅Sb₀.₃₅ type-II superlattice materials grown on GaSb substrates. Standard temperature- and magnetic-field-dependent resistivity and the Hall measurements on mesa samples in the van der Pauw configuration are performed, and multicarrier fitting and modelling are used to isolate transport of each carrier species. The results show that up to 5 carrier species of the surface, interface and bulk variety contribute to conduction, with bulk electron and hole mobility up to 2·10⁵ cm²/V s and 8·10³ cm²/V s, respectively and background dopant concentration levels were between 10¹⁴ and 10¹⁵ cm¯³. The in-plane mobility temperatures dependence is determined and trends of each carrier species with temperature and dose are analysed.
Źródło:
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144554
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroponics agriculture as a modern agriculture technique
Autorzy:
Monisha, K.
Kalai Selvi, H.
Sivanandhini, P.
Sona Nachammai, A.
Anuradha, C. T.
Rama Devi, S.
Kavitha Sri, A.
Neya, N. R.
Vaitheeswari, M.
Hikku, G. S.
Powiązania:
https://bibliotekanauki.pl/articles/24200644.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
hydroponics
agriculture
hoagland solution
macronutrients
micronutrients
types of hydroponic system
hydroponika
rolnictwo
makroskładniki
mikroskładniki
Opis:
Purpose Hydroponics, also known as controlled environment agriculture, is a method of cultivating plants and herbs without soil using mineral-supplemented solutions. Agriculture biotechnology enhances its wings on developing genetically modified plants for expanding crop yield and introducing characteristic features such as growing seasonal crops throughout the year, weather-resistant, and pest resistance. Compared to traditional agriculture, hydroponic cultivation yields high-quality crops with 90% more efficient use of water. Therefore, hydroponic cultivation could be considered a succeeding future of agriculture. In this context, understanding agriculture through the hydroponic route is vital for the efficient cultivation of crops. This review elaborates on the different classes of hydroponic systems and the factors that enable the systematic elements of the frame-up. Design/methodology/approach The significant intent of this review is to provide information on distinct hydroponic systems. Findings The present review reports a comprehensive discussion about the significance of the hydroponics system, its mechanism, nutrient solution preparation, types of hydroponic setup, and the challenges faced and would light up the knowledge in the same. Originality/value This review focus on the current feasible hydroponic method of crop cultivation.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2023, 116, 1; 25--35
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of antimicrobial resistance genes in intestinal content from Coyote (Canis latrans)
Autorzy:
López-Islas, J.J.
Méndez-Olvera, ET.
Reyes C, T.
Martínez-Gómez, D.
Powiązania:
https://bibliotekanauki.pl/articles/16647515.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
antimicrobial resistance
metagenome
Canis latrans
Opis:
Antibiotic resistance has become a global public health concern in the last few years. Given the widespread rate of recurrence, increasing attention is being turned toward environmental pathways that potentially contribute to antibiotic resistance genes (ARGs) dissemination outside the clinical realm. In this study, a metagenome analysis of intestinal virus-like particle fraction (VLPs) from a wild coyote (Canis latrans) revealed for the first time, multiple ARGs, such as B-lactamases and multidrug efflux pumps. Description of ARGs presence in natural environments is critical to understand the emergence of resistant strains.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 1; 143-149
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of environmental heat exposure on the health status in farmworkers, Nakhon Ratchasima, Thailand
Autorzy:
Sombatsawat, E.
Luangwilai, T.
Kaewchandee, C.
Robson, M.G.
Siriwong, W.
Powiązania:
https://bibliotekanauki.pl/articles/28765374.pdf
Data publikacji:
2023
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. Thailand is a tropical developing country which has a serious increase in health risk due to hot weather exposure among outdoor workers. Objectives. The aims of this study were to compare the factors related to environmental heat exposure in three different seasons, and to assess the relationship between environmental heat and dehydration status in each season among farmworkers in Nakhon Ratchasima, Thailand. Methods. A semi-longitudinal study was carried out in 22 male farmworkers throughout a year of farming. The primary data were collected in farmworkers for socio-demographic information, clinical assessments, and heat-related illnesses. Results. Average of environmental heat index (Median, SD) were severe in summer (WBGT=38.1, 2.8°C), rainy season (WBGT=36.1, 2.1°C), and winter (WBGT=31.5, 2.7°C). Average urine Sp. Gr. in summer, rainy season, and winter were 1.022, 1.020, and 1.018 respectively. The third sentence should be corrected as follows: The Friedman analysis revealed a statistically significant difference between the three different seasons in WBGT (wet bulb globe temperature), body temperature, heart rate (P<0.01), and respiratory rate (P<0.05). There was a statistically significant difference between the three different seasons for skin rash/itching, dizziness, muscle cramp dyspnea (P<0.05), and weakness (P<0.01). Wilcoxon signed-ranks analysis found a significant difference in the medians of the paired sets of urine Sp. Gr. values between baseline and summer (P<0.05). Spearman's rank correlation coefficient did not find a relationship between WBGT and urine Sp. Gr. in the three different seasons. Conclusions. This study demonstrated that farmworkers had exposure to environmental heat stress which was expressed through physical changes. Therefore, there is a need for either interventions or guidelines to prevent dehydration for outdoor workers in this region.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2023, 74, 1; 103-111
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increased Emergency Preparedness in Coastal Aquaculture
Autorzy:
Salomonsen, C.
Selvik, Ø
Berg, T. E.
Thorvaldsen, T.
Powiązania:
https://bibliotekanauki.pl/articles/24201479.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Norwegian Emergency Towing Service
crew competences
emergency preparedness
aquaculture
emergency preparedness vessel
public emergency preparedness
emergency preparedness vessel equipment
on-scene commander
Opis:
Aquaculture is an industry that has developed rapidly over the past decades. Despite several hazards in the operations, emergency preparedness is not at the same level as in the rest of the maritime industry. This paper highlights some possibilities to increase the aquaculture industry’s coastal emergency preparedness. This paper is the result of the innovation project “Coastal Emergency Preparedness” funded by the Norwegian Research Council and industry partners. The aquaculture industry must establish its own emergency preparedness. In this paper, the innovation of a fleet of emergency preparedness vessels along the coastline, which could fill the gaps in emergency preparedness, is presented. The vessels would be of varied sizes, with different equipment and response times, and could assist the aquaculture industry during local incidents or large‐scale ones, such as algae blooms or winter storms, that affect many sites at the same time. Each production zone would need its own dedicated fleet due to biosecurity regulations. The emergency preparedness vessel fleet would be led by an on‐scene commander. The fleet would deal with oil spills and tasks such as emergency towing, firefighting, rescue of people, recapturing of fish, silage making, algae detection, and diving missions. With such a vessel fleet, small and large aquaculture companies could increase their emergency preparedness with a common strategy and shared resources.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 523--531
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mobile phone use and its threat to dependence among secondary school students - an explanatory study
Autorzy:
Uher, I.
Kachlík, P.
Schubertová, A.
Yip, C.
Tomczyk Ruszkiewicz, K.
Kimaková, T.
Powiązania:
https://bibliotekanauki.pl/articles/28762646.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 306-314
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence and predictors of depression, anxiety, and stress among recovered COVID-19 patients in Vietnam
Autorzy:
Trang, L.T.T
Le, C.N.
Chutipatana, N.
Shohaimi, S.
Suwanbamrung, C.
Powiązania:
https://bibliotekanauki.pl/articles/28765340.pdf
Data publikacji:
2023
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:
Background. During the COVID-19 pandemic, a high prevalence of mental health distress has been reported among people who have recovered from the disease. Objectives. To assess the prevalence of depression, anxiety, and stress as well as identify predictors among recovered COVID-19 patients after more than six months of being discharged in Dong Thap Province, Vietnam. Material and methods. The cross-sectional study was conducted among 549 eligible participants recruited by stratified sampling. Data was collected using the depression, anxiety and stress scale – 21 items had Content Validity Index = 0.9, and Cronbach’s alpha for depression, anxiety and stress sub-scales were 0.95, 0.81, and 0.86, respectively. Descriptive statistics were used to measure the prevalence levels and distribution of characteristics of the participant, while factors influencing depression, anxiety, and stress were predicted using binary logistic regression. Results. The overall prevalence of depression, anxiety, and stress were 24.8% (95% CI: 21.2-28.6), 41.5% (95% CI: 37.4- 45.8), and 25.3% (95% CI: 21.7-29.2), respectively. The predictors of depression were living in urban area (OR = 1.97; 95% CI: 1.27-3.08), holding a bachelor’s degree (OR:3.51; 95% CI: 1.13-10.8), having a high monthly income (OR: 2.57; 95% CI: 1.03-6.38), diabetes (OR: 2.21; 95% CI: 1.04-4.68), heart disease (OR: 3.83; 95% CI: 1.79-8.17), respiratory disease (OR: 3.49; 95% CI: 1.24-9.84), and diarrhea (OR: 4.07; 95% CI: 1.06-15.6). Living in the urban area (OR: 1.57; 95% CI: 1.07-2.29), having sleep disturbance (OR: 2.32; 95% CI: 1.56-3.46), and fatigue (OR: 1.57; 95% CI: 1.03-2.39) were predictors for anxiety. Having respiratory disease (OR: 3.75; 95% CI: 1.47-9.60) or diarrhea (OR: 4.34; 95% CI: 1.18-15.9) were predictors of stress. Conclusion. People who have recovered from COVID-19 should be assessed for symptoms of depression, anxiety, and stress. Primary healthcare providers should develop interventions to support their recovery.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2023, 74, 2; 217-230
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shear properties of a honeycomb structure with zero Poisson’s ratio
Autorzy:
Song, L.
Sun, Y.
Han, Z.
Wang, T.
Wang, H.
Yin, C.
Shen, X.
Powiązania:
https://bibliotekanauki.pl/articles/38697109.pdf
Data publikacji:
2023
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
honeycomb structure
zero Poisson’s ratio
shear properties
small deformation
large deformation
Opis:
Honeycomb structures with zero Poisson’s ratio show promising potential for application in variable-sweep wing aircraft. The shear properties of these honeycomb structures serve as a crucial indicator of their morphing capacity. This paper derives the linear and non-linear shear properties of a honeycomb structure with zero Poisson’s ratio. A modified factor is introduced to establish a relationship between the linear and non-linear shear modulus of the honeycomb structure, simplifying the calculation method of the non-linear shear modulus. The validity of theoretical predictions is then confirmed using the finite element method Furthermore, the influences of the geometric parameters on the shear properties of the honeycomb structure with zero Poisson’s ratio are investigated, highlighting the varying contributions of these cell geometric parameters to the shear properties.
Źródło:
Archives of Mechanics; 2023, 75, 5; 521-541
0373-2029
Pojawia się w:
Archives of Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The advantages of drinking mineral water in the rehabilitation of patients with viral hepatitis C with accompanying non-alcoholic fatty liver disease after suffering from COVID-19
Autorzy:
Dragomiretska, N.
Zabolotna, I.
Gushcha, S.
Sierpińska, L.
Izha, G.
Plakida, A.
Bezverhnyuk, T.
Powiązania:
https://bibliotekanauki.pl/articles/28761697.pdf
Data publikacji:
2023
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2023, 30, 2; 266-272
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The association between ALR2 -106C > T gene polymorphisms and diabetic retinopathy susceptibility in diabetes mellitus patient: a systematic review and meta-analysis
Autorzy:
Putri, Indah Sagitaisna
Rezkita, Bastomy Eka
Irving, Steven
Azmiardi, Akhmad
Powiązania:
https://bibliotekanauki.pl/articles/4175390.pdf
Data publikacji:
2023-03-27
Wydawca:
Medical Education
Tematy:
ALR2 gene
diabetic retinopathy
diabetes mellitus
gene polymorphism
polyol pathway
Opis:
Aldose reductase gene polymorphisms has been indicated to be associated with diabetic retinopathy (DR). The research data were from PubMed and EMBASE. We identified -106C > T single nucleotide polymorphism (SNP). Pool odds ratio (OR) with 95% CI were calculated. Nine studies were included. ALR2 106C > T gene polymorphisms was associated with the increased risk of DR in T1DM (C vs. T, OR = 2.07, p = 0.001; CC vs. CT + TT, OR = 2.56, p = 0.005). T allele and TT genotype were associated with decreased risk of DR in T1DM (OR = 0.48, p = 0.0001 and OR = 0.12, p = 0.0005). In conclusion, C allele and CC genotype may be a risk factor, while T allele and TT genotype may serve as protective factor for DR in T1DM patient.
Źródło:
OphthaTherapy; 2023, 10, 1; 12-21
2353-7175
2543-9987
Pojawia się w:
OphthaTherapy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of luteolin on spermatological parameters, apoptosis, oxidative stress rate in freezing rabbit semen
Autorzy:
Akarsu, S.A.
Acısu, T.C.
Güngör, İ.H.
Çakır Cihangiroğlu, A.
Koca, R.H.
Türk, G.
Sönmez, M.
Gür, S.
Fırat, F.
Esmer Duruel, H.E.
Powiązania:
https://bibliotekanauki.pl/articles/16647483.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
rabbit
semen
cryopreservation
luteolin
oxidative stress
apoptosis
Opis:
The aim of the present study was to determine the effects of Luteolin (LUT) on semen quality, oxidative stress, apoptosis, acrosomal integrity, mitochondrial membrane potential and dead sperm ratio in rabbits. Ejaculates from six New Zealand rabbits were collected, evaluated and pooled. The pooling was divided into five groups as control (no additive) LUT 25 μM, LUT 50 μM, LUT 100 μM and LUT 200 μM and LUT added. It was then filled into a falcon tube with Tris-based extender at a final concentration of approximately 35 x 106 spermatozoa. Diluated rabbit semen samples were drawn into frozen and thawed. Frozen semen straws were thawed at 37°C in 30 seconds. According to our findings, no statistical difference was found between all doses of luteolin and the control group in the CASA (computer assisted sperm analysis) analysis performed at 4°C. However, total motility, progressive motility and rapid sperm percentage were found to be higher in the frozen and thawed rabbit semen at a dose of LUT 50 μM compared to the other groups (p<0.05). While amplitude of lateral head displacement (ALH) and beat cross-frequency (BCF) values were found at the lowest dose of LUT 200 μM, a statistically significant difference was observed between the other groups. When the flow cytometry results were examined, no statistical difference was found between the rate of dead sperm, acrosomal integrity, mitochondrial membrane potential and apoptosis rate. Morever, the H2O2 percentage was found to be lower in all experimental groups compared to the control group (p<0.001). In conclusion, the addition of LUT in long-term storage of rabbit semen provided a protective effect for spermatozoa with its antioxidative properties against damage caused by cryopreservation.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 1; 91-98
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wytwórnia blondynek
Autorzy:
Braun, Pola
Współwytwórcy:
Sekuła, Aleksandra
Choromańska, Paulina
Świetlik, Maria
Data publikacji:
2023-04-18
Wydawca:
Fundacja Wolne Lektury
Tematy:
Współczesność
Wiersz
Liryka
Opis:
Publikacja zrealizowana w ramach projektu Wolne Lektury (http://wolnelektury.pl). Dofinansowano ze środków Ministra Kultury, Dziedzictwa Narodowego pochodzących z Funduszu Promocji Kultury – państwowego funduszu celowego. Reprodukcja cyfrowa wykonana przez Fundację Wolne Lektury.
Źródło:
Pola Braun, Wytwórnia blondynek, Tłomackie 3/5, nr 1/2022 dostęp online: https://www.jhi.pl/storage/file/core_files/2022/7/29/90037el813b81de424d8e8fcace73254/T%C5%82omackie_3_przez_5_numer_pierwszy.pdf
Dostawca treści:
Wolne Lektury
Książka
Audiobook
Tytuł:
Analysis of livelihood of rural irrigated crop farmers in Kano State, Nigeria
Autorzy:
Ahmadu, T.A.
Amurtiya, M.
Markson, N.C.
Powiązania:
https://bibliotekanauki.pl/articles/29430948.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2022, 22[37], 2; 57-64
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of tree diversity and stand structure on above-ground carbon storage in evergreen broad-leaved and deciduous forests in Southeast Vietnam
Autorzy:
Tuan, N.T.
Rodriguez-Hernandez, D.I.
Tuan, V.C.
Quy, N.V.
Obiakara, M.C.
Hufton, J.
Powiązania:
https://bibliotekanauki.pl/articles/2130199.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Biodiversity assessment
Ecosystem functioning
Taxonomic diversity
Natural forests
Stand structure
Opis:
Understanding the relationship between tree species diversity and above-ground carbon (AGC) storage in tropical forests is essential for a sustainable flow of ecosystem goods and services. Although tropical forests of Vietnam are of particular interest due to their high biodiversity and carbon density, few studies have evaluated the relative importance of species composition, tree species diversity and forest structure on AGC storage by forest vegetation type. In this study, we tested for the influence of taxonomic diversity, forest structure and species composition on AGC storage in evergreen broad-leaved and deciduous forests of Southeast Vietnam. Data was collected within 137 rectangular plots (25 m × 20 m), randomly selected across a deciduous forest (DF) and four evergreen broad-leaved forest (EB) categories, with different standing volumes levels: very poor (EBG), poor (EBP), medium (EBM) and rich (EBR). In total, we identified 3687 individuals from 110 tree species belonging to 46 families in 6.85 hectares of sampled area. AGC storage significantly differed among forest categories, ranging from 14.81 Mg ha−1 in EBG to 146.74 Mg ha−1 in EBR. There was higher AGC in the medium diameter class (20-40 cm), except for EBR where there was higher AGC within individuals of 40-60 cm in diameter. Taxonomic diversity was weakly correlated with AGC while stand structure (stem density and maximum diameter) were strongly correlated. Our results suggest that maintaining the abundance distributions of remnant tree species, particularly that of large trees, is one important method to enhance AGC storage in the tropical ecosytems of southern Vietnam.
Źródło:
Dendrobiology; 2022, 88; 38-55
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 1266

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