Miracle-dz/UniFAR-FTUs huggingface dataset:
Molecular weight distribution of organic phosphorus in lake sediments.

Total P, oraganic P and fractionated inorganic P were determined in a core sample of 130cm depth collected from Lake Suwa. Total P, aluminum P and iron P were enriched in the surface sediment. Organic P in the core sample ranged from 0.18 to 0.39 mg·g-1 and its percentage to total P ranged from 12.3 to 18.8%. The change of oraganic P with the core depth was closely related to that of organic C. Organic P was fractionated into three fractions through a column of Sephadex G-75. In the surface sediment the percentages of organic P in G-75-I (MW>50, 000), G-75-II (MW=1, 00050, 000) and G-75-III (MW<1, 000) were 32.9, 38.7 and 28.4%, respectively. The amount of organic P decreased with the core depth in G-75-II and G-75-III, while it was unchanged in G-75-I. Organic P was separated into humic acid and fulvic acid fractions and the molecular weight distributions of the fractions were determined. It was suggested that organic P in lake sediments was stable in the high molecular weight fraction.
Air Traffic Management during Rare Events Such as a Pandemic: Paris Charles de Gaulle Case Study

Paris Charles de Gaulle Airport was the second European airport in terms of traffic in 2019, having transported 76.2 million passengers. Its large infrastructures include four runways, a large taxiway network, and 298 aircraft parking stands (131 contact) among three terminals. With the current pandemic in place, the European air traffic network has declined by −65% flights when compared with 2019 traffic (pre-COVID-19), having a severe negative impact on the aviation industry. More and more often taxiways and runways are used as parking spaces for aircraft as consequence of the drastic decrease in air traffic. Furthermore, due to safety reasons, passenger terminals at many airports have been partially closed. In this work we want to study the effect of the reduction in the physical facilities at airports on airspace and airport capacity, especially in the Terminal Manoeuvring Area (TMA) airspace, and in the airport ground side. We have developed a methodology that considers rare events such as the current pandemic, and evaluates reduced access to airport facilities, considers air traffic management restrictions and evaluates the capacity of airport ground side and airspace. We built scenarios based on real public information on the current use of the airport facilities of Paris Charles de Gaulle Airport and conducted different experiments based on current and hypothetical traffic recovery scenarios. An already known optimization metaheuristic was implemented for optimizing the traffic with the aim of avoiding airspace conflicts and avoiding capacity overloads on the ground side. The results show that the main bottleneck of the system is the terminal capacity, as it starts to become congested even at low traffic (35% of 2019 traffic). When the traffic starts to increase, a ground delay strategy is effective for mitigating airspace conflicts; however, it reveals the need for additional runways.
Anion Exchange Fuel Cell Membranes Prepared from C–H Borylation and Suzuki Coupling Reactions

Of the polymer materials investigated as anion exchange membranes, trimethylbenzylammonium-containing polysulfones are the most extensively studied. They are commonly prepared by chloromethylation of the aromatic backbone or radical bromination of benzylic carbons, followed by a Menshutkin reaction between a tertiary amine and the benzyl halide. To overcome synthetic limitations involved with these two methods, we report the preparation of an anion exchange membrane by means of iridium-catalyzed C–H borylation followed by palladium-catalyzed Suzuki coupling. Owing to the use of mild reaction conditions and high efficiency of these metal-catalyzed reactions, we were able to minimize side reactions and easily control the degree of functionalization for a series of trimethylbenzylammonium-containing polysulfones. The resulting membranes exhibited lower water uptake while maintaining similar hydroxide conductivity and functional group stability as compared to the corresponding chloromethylation-prepared anion.
Nanocatalyst transformation and biological activities of lilial

ABSTRACT The changes produced in natural-product compounds by nanocatalysts can be important in the search for new uses of these compounds as medicinal drugs and in food processing. In this research a nanocatalyst was used to convert a natural plant compound to a compound with strong antioxidant properties. In this study lilial was reduced to hydroxyl lilial (Hl) using a magnetic Fe3O4@SiO2-Ag nanocomposite. The iron oxide was synthesized using a sol–gel method to attain a nanoparticle size of 14 nm. Silica oxide nanoparticles were then used to coat the iron oxide, using tetraethyl orthosilicate (TEOS) as the silica source. Finally, core-shell Fe3O4@SiO2-Ag microspheres were created to form a nanocatalyst; the size was calculated with x-ray diffraction (XRD) to be 24 nm. Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscope (SEM), ultraviolet–visible spectrophotometry (UV–Vis), gas chromatography-mass spectroscopy (GC-MS), and XRD were used for identification of the Hl compound and preparation of the Fe3O4@SiO2-Ag nanocatalyst. Measurement of antioxidant and antibacterial activity showed that the Hl compound was effective both as an antioxidant and a bactericide.
Sexual life changes in pregnant women during COVID-19 outbreak

1 Clinic of Obstetrics and Gynecology, Hera Clinic, İstanbul, Turkey 2 Department of Obstetrics and Gynecology, Manisa City Hospital, Manisa, Turkey 3 Clinic of Obstetrics and Gynecology, Viveste Clinic, İstanbul, Turkey 4 Department of Obstetrics and Gynecology, Kartal Training and Research Hospital, İstanbul, Turkey 5 Department of Obstetrics and Gynecology, Ümraniye Training and Research Hospital, İstanbul, Turkey
Prediction of Skin Sensitization Potential of Silver and Zinc Oxide Nanoparticles Through the Human Cell Line Activation Test

The development of nanotechnology has propagated the use of nanoparticles (NPs) in various fields including industry, agriculture, engineering, cosmetics, or medicine. The use of nanoparticles in cosmetics and dermal-based products is increasing owing to their higher surface area and unique physiochemical properties. Silver (Ag) NPs' excellent broad-spectrum antibacterial property and zinc oxide (ZnO) NPs' ability to confer better ultraviolet (UV) protection has led to their maximal use in cosmetics and dermal products. While the consideration for use of nanoparticles is increasing, concerns have been raised regarding their potential negative impacts. Although used in various dermal products, Ag and ZnO NPs' skin sensitization (SS) potential has not been well-investigated using in vitro alternative test methods. The human Cell Line Activation Test (h-CLAT) that evaluates the ability of chemicals to upregulate the expression of CD86 and CD54 in THP-1 cell line was used to assess the skin sensitizing potential of these NPs. The h-CLAT assay was conducted following OECD TG 442E. NPs inducing relative fluorescence intensity of CD86 ≥ 150% and/or CD54 ≥ 200% in at least two out of three independent runs were predicted to be positive. Thus, Ag (20, 50, and 80 nm) NPs and ZnO NPs were all predicted to be positive in terms of SS possibility using the h-CLAT prediction model. Although further confirmatory tests addressing other key events (KEs) of SS adverse outcome pathway (AOP) should be carried out, this study gave an insight into the need for cautious use of Ag and ZnO NPs based skincare or dermal products owing to their probable skin sensitizing potency.
CRYSTAL CHEMISTRY ANALYSIS ON FLOTABILITY DIFFERENCE OF SPODUMENES WITH DIFFERENT COLORS

Flotability difference of spodumenes with three different colors (white, light green and pink) was examined. Combining with minerals crystal chemistry and surface property, and with the aid of X ray photoelectron spectrometric and ζ potential measure results, main reasons of flotability difference of three spodumenes with different colors were analysed.
Effect of Different Water Quality on the Nutritive Value and Chemical Composition of Sorghum bicolor Payenne in Cape Verde

Cape Verde is a semiarid country where lack of rainfall exacerbates the scarce resources available for livestock which, therefore, make it very vulnerable to climate change. By providing reclaimed water (RW) for irrigation, it is possible to decrease forage importation. Subsurface drip irrigation (SDI) improves health security by preventing contact between water and harvested plants. Sorghum is a water-efficient crop that provides good nutritional value. The aim of this experiment was to study the nutrient and fiber contents of the Sorghum Payenne variety using subsurface (T1) and surface (T2) drip irrigation by RW vs. conventional water (T3) and plant maturity to assure the feasibility of water reuse to produce forage. Ntot–Ptot–Ca–Mg and Na were significantly higher in the RW plants than in the conventional water ones. Ntot–Ptot–K and Fe contents significantly lowered, while Ca–Na and Mn significantly rose as plant maturity increased. All the fiber values meet the Nos. 2 and 3 quality standards, and the Prime and No. 1 for NDF and ADF, respectively. The obtained good forage quality let to avoid the competence of conventional water and to reuse nutrients added by RW. If generalized, this solution would reduce forage importation by improving food sovereignty and farmers’ profitability, and would enhance resilience against climate change effects.
Photocatalytic degradation of p-nitrophenol and methylene blue using Zn-TCPP/Ag doped mesoporous TiO2 under UV and visible light irradiation

AbstractIn this study, Ag-doped mesoporous TiO2 powder was prepared via a sol–gel route with Pluronic P123 as template and then was modified with zinc(II) tetrakis(4-carboxyphenyl)porphyrin. The catalysts were characterized by X-ray diffraction, diffuse reflectance spectroscopy, Fourier transform infrared (FT-IR), scanning electron microscopy, N2 sorption experiments (BET), X-ray fluorescence analysis, and inductively coupled plasma spectroscopy. The photocatalytic activities of Ag-doped mesoporous TiO2 and Zn-TCPP/Ag-doped mesoporous TiO2 were evaluated using methylene blue and p-nitrophenol as pollutant compounds under UV and visible light irradiation. The results show that Zn-TCPP/Ag-doped mesoporous TiO2 have higher activity than Ag-doped mesoporous TiO2 under visible light irradiation, but its activity is lower under UV light irradiation.
THE METHODICAL ASPECTS OF DISTANCE LEARNING FOR ART’S EDUCATIONAL PROGRAMMES

The article discusses the problem of methodical aspects integration in distance learning for Art’s educational programmes in Higher Educational Institutions (HEI). The relevance of research reflects the quarantine measures for the non-proliferation of coronavirus infection Covid19 in Art's universities of Kazakhstan in current state of distance learning. The novelty of the research is the implementation of educational policy according to the Kazakhstani state program within the conditions of distance learning. The aim of research is to reveal the methodological aspects for training Art students within distance learning in accordance with the topical problems in education, based on the new technologies and methods of digitalization. Primary methods of research are based on Case studies, which include theoretical review of the practical application of the MOODLE platform into distance learning. The result of the research is disclosure of the experience of the Art’s teachers in conducting the study process within the framework of distance learning technologies (DLT). The research illustrates the example of study process of the Department of Scenography of T. K. Zhurgenov Kazakh National Academy of Arts based on the bachelor educational programs: Stage decoration, Multimedia scenography, Film and TV director, Stage costume, Theatrical makeup.
Biodegradation studies of recycled vegetable oils, surface-active agents, and condensing wastewaters

Biodegradation is an aerobic or anaerobic degradation reaction where bacteria use organic materials as an energy source. In the aerobic biodegradation reaction, bacteria need oxygen as an electron acceptor, whereas an anaerobic reaction takes place in the absence of oxygen. Compounds degrade totally or partially, and produce simple inorganic species, such as CO2, CH4, NH3, NO3 and H2O, as well as by-products that may be non-biodegradable and/or toxic. In this thesis, the biodegradability of recycled vegetable oils, surface-active agents, and condensing waters from the process of wood drying were studied using the manometric respirometric BOD OxiTop method. The biodegradation of organic compounds was measured under the standard conditions (OECD 301F), and also in other matrices, such as different waters and soils. These are very different environments with respect to the biodegradation reaction in nature. The main differences in waters and soils are their organic and inorganic nutrient contents, bacteria strains, and temperatures. The BOD OxiTop method is based on automatic pressure detection in a closed reactor vessel. Oxygen is consumed and carbon dioxide is formed in the aerobic reaction. The pressure decrease is detected after the carbon dioxide is adsorbed into a NaOH pellet or solution. The pressure change is dependent on oxygen consumption. The degree of biodegradation is calculated from the BOD value of the sample. The studied recycled vegetable oils were found to be 60–83% biodegradable, and the added surface-active agent did not affect their biodegradation. Biodegradation of tall oil soaps was also examined in sand, topsoil, groundwater, and surface water, as well as under OECD 301F standard conditions. Tall oil soaps were proven to be 50–85% biodegradable. Concrete solvent agent (CSA) was also proven to be 78–83% biodegradable under standard conditions. Another detergent, cetyltrimethylammonium bromide (CTAB), was found to be toxic, whereas Triton X-100 biodegraded by only 6% in solution. Biodegradation of the soil matrix was found to be enhanced with added surface-active agents. This can be explained by better wetting of small pores with surface-active agents, as compared to the behavior of pure water. The biodegradation of the matrix occurred even with toxic surface-active agents. Organic pollutants of wastewaters from the process of wood drying were 25–61% biodegradable during a 28-day period, and were proven to be quite pure when considering the carbon content of the samples. Based on these results, the disposal into drainage of condensing waters from wood drying may be regarded as safe, which from an economical viewpoint is a very important conclusion.
Uniform hypergraphs with many edge‐colorings avoiding a fixed rainbow expanded complete graph

For fixed positive integers r and k , and a fixed k ‐uniform hypergraph F , we look for n ‐vertex hypergraphs that admit the maximum number of r ‐edge‐colorings with the property that there is no copy of F for which all hyperedges are assigned different colors. We consider F = H ℓ + 1 ( k ) , the k ‐uniform expanded complete graph, and we prove that the Turán hypergraph T ℓ ( k ) ( n ) , the balanced ℓ ‐partite k ‐uniform hypergraph on n vertices, is the only extremal configuration for any r ≥ r 0 ( k , ℓ ) and large n .
Vehicle running instability detection algorithm (VRIDA): A signal based onboard diagnostic method for detecting hunting instability of rail vehicles

In recent years, significant research transpired on onboard monitoring of various phenomena arising in dynamic vehicle-track interaction. One key issue being monitoring of vehicle hunting instability. Current hunting detection standards are appropriate for certification tests of vehicles, but incapable to monitor the health of the vehicle and track subsystems influencing the hunting instability. This paper proposes a signal based procedure for accurately triggering Hunting/No-Hunting alarm by conforming to requirements of onboard monitoring. A new method is conceived to reveal coherence among lateral and longitudinal accelerations during vehicle hunting. Furthermore, an index which amalgamates phase and amplitude information of lateral and longitudinal axlebox accelerations is introduced to detect coupled modes in lateral and yaw directions, i.e. hunting modes. Several simulations based pragmatic case studies are performed to assess the efficacy of the proposed procedure. The proposed method outperforms traditional hunting detection procedures by detecting more Hunting/No-Hunting occurrences. The proposed method contributes towards digitalization of rail vehicles through condition-based and predictive maintenance.
Prediction of dam horizontal displacement based on CNN-LSTM and attention mechanism

Aiming at the characteristics of dam safety monitoring data sequence with few samples, short sequence and nonlinearity, a dam horizontal displacement prediction method based on attention mechanism, convolutional neural network (CNN) and long short-term memory (LSTM) is proposed. This method can reduce the loss of historical information and improve the prediction accuracy. First, the missing values are supplemented by linear interpolation to improve the integrity of the data. Then the abstract feature data extracted by CNN is mapped to the predicted value of LSTM, and then optimized through attention mechanism. Finally, the model is trained and verified with the monitoring data of a concrete gravity dam in Chongqing as a sample. Experimental results show that the root mean square error (RMSE), mean absolute percentage error (MAPE) and fit (R2) of the CNN-LSTM hybrid model based on attention mechanism are 0.3882, 0.7121% and 0.9543, respectively. The prediction accuracy of the new model is better than the CNN-LSTM model and the LSTM neural network model.
Social media use and family connectedness: A systematic review of quantitative literature

Despite the ubiquitous use of social media platforms by people of all ages, there is limited synthesis of evidence on their effect on family connectedness. This systematic review assesses the quantitative evidence around relationship between social media use and family connectedness. We searched articles published between January 2010 and April 2020. Nine of the 14 included studies examined the effect of social media on parent-child communication, while the rest explored the effect on broader family relationships. Overall evidence is mixed, highlighting some aspects of social media use that may strengthen family connectedness, while others that may negatively impact meaningful interactions within families. This review illustrates the complex nature of this research domain with limited consensus on how to measure family connectedness in context of social media use. We discuss the limitations of the studies and the greater need for high-quality research in the fast-paced world of social media.
Survival of the thickest? Impacts of extreme wave‐forcing on marsh seedlings are mediated by species morphology

Although tidal marshes are known for their coastal defense function during storm surges, the impact of extreme wave forcing on tidal marsh development is poorly understood. Seedling survival in the first season after germination, which may involve exposure to extreme wave events, is crucial for the natural establishment and human restoration of marshes. We hypothesize that species‐specific plant traits plays a significant role in seedlings survival and response to wave induced stress, i.e., through stem bending and uprooting. To test this hypothesis, seedlings of pioneer species (Bolboschoenus maritimus, Schoenoplectus tabernaemontani, Spartina anglica, and Puccinellia maritima) with contrasting biophysical traits were placed in the Large Wave Flume in Hannover (Germany) and exposed to storm wave conditions. Seedlings of P. maritima and S. anglica experienced a lower loss rate and bending angle after wave exposure compared to S. tabernaemontani and especially B. maritimus. The higher loss rates of B. maritimus and S. tabernaemontani result from deeper scouring around the stem base. Scouring depth was larger around stems of greater diameter and higher resistance to bending. Here, B. maritimus and S. tabernaemontani have both thicker and stiffer stems than S. anglica and P. maritima. Our results show that especially seedlings with thicker stems suffer from erosion and scouring, and have the highest risk of being lost during extreme wave events. This implies that for successful seedling establishment and eventually the establishment of a mature tidal marsh vegetation, the species composition and their capacity to cope with storm wave disturbances is crucial.
Analysis of Single Stranded Conductor's Negative DC Corona Onset Characteristic at Different Altitudes

It's important to assure conductor's corona onset voltage in design and operation of transmission line,especially at high altitude areas.Because of polarity effect,negative corona onset voltage is lower than the positive one,with the same electrode structure.Consequently,the negative corona onset voltage of stranded conductors at different altitudes was analyzed.The electric field strength Ecalculation method of stranded conductor was adopted,the ionization coefficientαand electron attachment coefficientηin different E/pranges were obtained,and a corona onset criterion was applied to calculate negative DC corona onset voltages of LGJ-300/25stranded conductors at different altitudes H.Moreover,at Wuhan(H=23m),Golmud(H=2829m),and Nachitai(H=3800m),corona onset characteristics were tested,and the calculation results were in good agreeement with the test results.The results show that,for transmission line,the air pressure pdecreases as altitude Hrises,and the corona onset voltage of strand conductor decreases linearly,the negative corona onset voltage decreases by 8%approximately as altitude increases by 1000m(air pressure pdecreases by 9.47kPa).