Big Drop Research Articles

Hardness Distribution of Heat-Affected Zones Made by Hardfacing on S690QL and S960QL Steel Plates

In the case of hardfacing the usage of high-strength steels is more and more influential. Several applications can be found in the construction and demolition fields where the dynamic loading occurs beside the abrasive loading. Additionally, the applied steel strength is increased, and S690QL and S960QL base materials are used as base materials for hardfacing. These materials are quenched and tempered which means that the heat cycle of the welding / hardfacing can cause significant changes in the heat-affected zone. The heat cycles of hardfacing have a different effect on the heat-affected zone, than the welding. Additionally, there are sub-zones where 2 or 3 heat cycles cause softening or hardening due to microstructural changes. The properties of the heat-affected subzones basically depend on the heat input, the number of heat cycles, and the base material. In this research, the hardness of heat-affected zones was investigated in the case of S690QL and S960QL base material. Hardfacing was made by different heat inputs in the case of both materials and after comparison, differences are written. One butter layer and 3 hardfacing layers were made in each case by robotic MIG/MAG welding. Several heat-affected subzones are determined, so for exact results hardness maps were made in all cases by hundreds of hardness tests. These maps show perfectly the differences between the hardness of the zones and the differences between the dimensions of heat-affected zones. There are significant differences in the multiple times heated subzones according to heat input. In the case of S690QL, the hardening is more significant than the softening in the heat-affected zone, the S960QL shows the opposite reaction to the heat cycles of hardfacing. On the hardness maps, the differences between the hardfacing layers are almost visible, and it shows big drops in the hardness of these layers in all cases.

Magic Number N = 350 Predicted by the Deformed Relativistic Hartree-Bogoliubov Theory in Continuum: Z = 136 Isotopes as an Example

The investigation of magic numbers for nuclei in the hyperheavy region (Z>120) is an interesting topic. The neutron magic number N=350 is carefully validated by the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc), via analysing even-even nuclei around N=350 of the Z=136 isotopes in detail. Nuclei with Z=136 and 340≤N≤360 are all found to be spherical in their ground states. A big drop of the two-neutron separation energy S2n is observed from N=350 to N=352 in the isotopic chain of Z=136, and a peak of the two-neutron gap δ2n appears at N=350. There exists a big shell gap above N=350 around the spherical regions of single-neutron levels for nucleus with (Z=136,N=350). These evidences from the DRHBc theory support N=350 to be a neutron magic number in the hyperheavy region.

Steering Mechanism and Capability of Forced Steering Device for Low-Floor Light Rail Train

For 70% low-floor trains on the light rail lines in Changchun, a multi-linkage forced steering device (FSD) is developed aiming at relieving the independently rotating wheelset (IRW) excessive flange wear and improving IRW bogie system running safety on curve line. This FSD employs guiding mode of steering four independently rotating wheels separately in a two-axle bogie, that is, four FSDs are employed to work together to realize the steering of a two-axle bogie. One side of an FSD is connected to the axle of an independently rotating wheel while the other side is attached to the front or rear vehicle body. When train passes through curve, the yaw angle between the IRW bogie and the front or rear carbody drives the linkage system to rotate to guide the independently rotating wheel towards its radial position. The coupled vehicle-track dynamics model for a 6-module single-type low-floor light rail train is developed and simulations of the train passing through tangent and curved tracks with and without FSD proposed are carried out. The results indicate that the FSD can improve the IRW restoring capability on tangent track and curve negotiation performance on whether sharp, medium, or large curved track. For example, passing through a curve with a radius of 200[Formula: see text]m, the IRW friction work has the biggest drop by 62.07% and the wheelset attack angle is second with a reduction rate of 55.02%. Adopting of larger steering stiffness, smaller steering clearance, and lever ratio greater than the ideal value can guarantee the higher steering ability of FSD. Besides, lower longitudinal stiffness of the trailer primary suspension is recommended because it can also enhance the steering ability of the FSD.

Acoustic fields to levitate big water drops

Abstract In this report, we described the main characteristics of acoustic fields allowing the levitation of big water drops. A numerical study is presented for different configurations of levitators and their associated acoustic fields. It is shown that an emitter different to a piston-type source, for instance, a circular plate excited in its center, vibrating at its first axisymmetric eigenmode can produce an acoustic field with improved levitation capabilities.

Weathering of Wood Modified with Acetic Anhydride—Physical, Chemical, and Aesthetical Evaluation

The goal of this study is to comprehensively evaluate the natural weathering performance of three wood species representing hardwood and softwood modified with the acetylation process. Alder (Alnus glutinosa L.), beech (Fagus sylvatica L.), and radiata pine (Pinus radiata D. Don) were characterised by various techniques to determine the aesthetical, chemical, and physical changes. The overall aesthetic performance of the investigated species was similar, with all showing a change in appearance after 9 months of exposure. However, the multi-sensor approach used for characterisation revealed differences in weathering behaviour related to surface erosion, wettability, and changes in chemical composition between the investigated species. An increase in the surface roughness observed for both hardwoods was associated with the erosion of the wood surface and the leaching of photodegraded chemical components. On the contrary, values of Sa remained relatively constant for acetylated radiata pine. Acetylated pine wood exhibited lower susceptibility to bleaching at the initial stage of the weathering process (3 months) and represented a more constant CIE L* compared to the investigated hardwood species. The contact angle measured with water gradually decreased in the case of acetylated radiata pine for up to six months, then it plateaued with a slight oscillation around 15°. For both hardwood species, the big drop was observed already after three months, followed by rather similar values. The PCA of IR spectra highlighted different mechanisms in the weathering of acetylated softwood and hardwood. The acetylated hardwood samples showed higher thermal stability than acetylated radiata pine. Experimental findings provide a comprehensive understanding of the long-term performance of acetylated wood, which directly influences its practical applications by enhancing design strategies, maintenance planning, product development, market acceptance, and overall sustainability. Performed tests have demonstrated the potential of underutilised hardwood species, enhanced through the acetylation process, to serve as alternative cladding materials to commonly used acetylated radiata pine.

Impact of the COVID-19 Pandemic on Thyroid Cancer Surgery.

The COVID-19 pandemic caused major disruptions to healthcare services in 2020, delaying cancer diagnosis and treatment. While early-stage thyroid cancer often progresses slowly, it is crucial to determine whether treatment delays associated with the pandemic have impacted the clinical presentation and management of advanced-stage thyroid cancer. The purpose of our study was to determine the impact of the early COVID-19 pandemic on thyroid cancer presentation and treatment times. Utilizing the National Cancer Database, chi-squared tests and regression analyses were performed to compare patient demographic and clinical characteristics over time for 56,011 patients diagnosed with primary thyroid cancer who were treated at the Commission on Cancer-accredited sites in 2019 and 2020. We found that thyroid cancer diagnoses decreased between 2019 and 2020, with the biggest drop among patients with cT1 disease relative to other T stages. We also found that patients diagnosed with thyroid cancer in 2020 had similar treatment times to patients diagnosed in 2019, as measured by both the time between diagnosis and start of treatment and the time between surgery and start of radioactive iodine therapy. Overall, our study suggests that resources during the pandemic were allocated to patients with advanced thyroid disease, despite a decrease in diagnoses.

Effects of VOC emission reduction on atmospheric photochemistry and ozone concentrations during high-ozone episodes

We studied atmospheric volatile organic compounds (VOCs) characteristics and sources during fifteen high ozone (O3) episodes (daily 1-h maximum >100 ppbv and maximum 8-h average > 80 ppbv) in Nanjing, China, and used a photochemical box model to study the O3 formation sensitivity of VOCs, O3 photochemistry, radical budget, and reactivity for different emission reduction scenarios together with the base case ones. Overall, emission reduction from biogenic sources, followed by combustion sources, multiple sources, and solvent usage, had the major impacts on the O3 concentrations. According to photochemical box model simulations, isoprene was the most sensitive or influential VOC in the formation of O3, followed by ethylene, o-xylene, and cis-2-pentene. A 20.6 ± 11.7% concentration reduction of the sixteen most sensitive VOCs (SV16) for the production of O3 could bring the O3 concentration below the national standard level (daily 1-h maximum <100 ppbv). Besides, a 30% emission reduction from all the anthropogenic sources was more than enough to bring the O3 concentration below the national standard level. The total emission reduction of alkenes was always enough to bring the O3 concentration below the national standard level, which was not the case for aromatics under severe pollution conditions. The simulated OH reactivity analysis illustrates the importance of alkenes and aromatics, which account for about half of the total OH reactivity. The highest OH reactivity decreased due to the emission reduction for biogenic sources, followed by combustion and multiple sources. Alkenes played a major role in the OH, HO2, and RO2 radical's formation in the study area. The biggest drop in OH, HO2, and RO2 radical concentrations was noticed for biogenic emission reduction, followed by combustion and multiple sources. Due to the emission reduction from VOC sources, the highest O3 formation rates decreased for biogenic sources, followed by combustion and multiple sources. The acquired information is valuable to the scientific community and policymakers for formulating and implementing O3 pollution control strategies.

The effectiveness of using a combination of eggshell waste and natural zeolite as an adsorbent for treating laundry waste

In Indonesia, the laundry industry is expanding extremely quickly. There are worries over the concentration of surfactants accumulated in the aquatic environment because the laundry industry has expanded into both large cities and rural regions, yet control over the disposal of laundry waste is still quite poor. In order to lessen surfactant waste in the aquatic environment, we must control laundry waste. Eggshells are not used to their full potential because of a lack of public understanding. In addition to figuring out the ideal composition of the optimum ratio of zeolite to eggshell that can lower detergent levels in laundry waste, this study attempts to ascertain how successful it is to combine chicken eggshells with active zeolite in decreasing laundry waste. In this investigation, two adsorbents were used as a treatment for synthetic laundry waste (LAS) and laundry waste. There are two iterations of each treatment. A 1: 50 ml sample of 1.0 g of adsorbent in 50 ml surfactant samples (laundry waste) was employed in this investigation. It then splits into five different treatments: Zeolite 1.0 g and chicken eggshell 0 g (A), zeolite 0.0 g and chicken eggshell 1 g (B). Chicken eggshell 0.3 g and 0.7 g of active zeolite (C), 0.5 g and 0.5 g of active zeolite (D), and 0.7 g and 0.3 g of active zeolite (E). The findings demonstrated that the detergent content decreased from 50.507 mg/L to P1 (A) 39.535 mg/L, P2 (B), 44.794 mg/L, P3 (C), 38.311 mg/L, P4 (D), 42.063 mg/L, and P5 (E) 37.396 mg/L. These results corresponded to an advisory capacity of A; 0.5484 mg/g, B; 0.2855 mg/g, C; 0.6095 mg/g, D; 0.4222 mg/g, and E; 0.6553 mg/g. The percentage efficiency of each treatment was determined to be 21.724%, B: 11.311%, C: 24.148%, D: 20.073%, and E: 25.959%. E saw the biggest drop, coming in at 37.396 mg/l. According to the study's findings, treating chicken eggshells has a 25.959% efficiency rate and an adsorption capacity of 0.6553 mg/g. The ideal mixture is 0.3 gr. of zeolite and 0.7 gr. of eggshell. Eggshell and natural zeolite are combined in the absorption process of LAS/SLS compounds, with a contact time of 30 minutes and a discharge rate of 8 ml/minute.

Quantifying the Efficacy of Retrofitting Slabs Under Local Blast Loads through Numerical Analysis using Polyurea-Infused Woven Glass Fiber Mesh Composites

Terrorists now frequently use explosive attacks to carry out assaults. They frequently utilize car bombs, luggage bombs, or suicide bombs to target key buildings, creating fear and drawing public attention. The specimens used consist of semi-rigid slabs with varying thicknesses of 15 cm, 18 cm, and 20 cm. Two models were considered: one with additional reinforcement using polyurea-infused woven glass fiber mesh composites and another without any additional reinforcement. These slabs were subjected to blast loads. Numerical analysis was conducted using Wolfram Mathematica software. When polyurea-infused woven glass fiber mesh composites were used as reinforcement, slabs of decreasing thickness showed a big rise in their resistance to blast loads. This demonstrates the effectiveness of this material in enhancing slab performance under blast conditions. For example, when extra retrofitting using polyurea-infused woven glass fiber mesh composites was done at the same thickness (15 cm), a big drop was seen—a drop of 97.61%. Similarly, at a thickness of 18 cm, a decrease of 30.48% was experienced, while at a thickness of 20 cm, the reduction reached 70.40%.

Rapid induction of dopaminergic neuron-like cells from human fibroblasts by autophagy activation with only 2-small molecules.

The dopaminergic neurons are responsible for the release of dopamine. Several diseases that affect motor function, including Parkinson's disease (PD), are rooted in inadequate dopamine (DA) neurotransmission. The study's goal was to create a quick way to make dopaminergic neuron-like cells from human fibroblasts (hNF) using only two small molecules: hedgehog pathway inhibitor 1 (HPI-1) and neurodazine (NZ). Two small compounds have been shown to induce the transdifferentiation of hNF cells into dopaminergic neuron-like cells. After 10 days of treatment, hNF cells had a big drop in fibroblastic markers (Col1A1, KRT18, and Elastin) and a rise in neuron marker genes (TUJ1, PAX6, and SOX1). Different proteins and factors related to dopaminergic neurons (TH, TUJ1, and dopamine) were significantly increased in cells that behave like dopaminergic neurons after treatment. A study of the autophagy signaling pathway showed that apoptotic genes were downregulated while autophagy genes (LC3, ATG5, and ATG12) were significantly upregulated. Our results showed that treating hNF cells with both HPI-1 and NZ together can quickly change them into mature neurons that have dopaminergic activity. However, the current understanding of the underlying mechanisms involved in nerve guidance remains unstable and complex. Ongoing research in this field must continue to advance for a more in-depth understanding. This is crucial for the safe and highly effective clinical application of the knowledge gained to promote neural regeneration in different neurological diseases.

Multi-timescale variation characteristics of PM2.5 in different regions of China during 2014–2022

Over the past decade, China has achieved a significant reduction in PM2.5 concentrations. Due to the diversity of natural and artificial factors, regional differences are remarkable in the variation characteristics and have not been well addressed in previous studies. Based on hourly observed PM2.5 concentrations from 2014 to 2022, this study conducted a comprehensive analysis of variation characteristics on annual, seasonal, and diurnal scales, with a special focus on differences across major regions. Driving factors of the variations, the effectiveness of air pollution control efforts as well as future priorities were discussed. The annual PM2.5 concentrations in all regions showed an overall downward trend from 2014 to 2022, but the decline rates differed notably across the regions, with the maximum value nearly two times higher than the minimum value. The seasonal decline rates also differ from region to region, which could be partially attributed to the burning of crop residues and dust events. Northeast China was significantly affected by the burning of crop residues and experienced a big drop in the number of fire points in autumn, but a remarkable increase in spring. The spring dust events may greatly contribute to PM2.5 concentrations in northern and western China. For diurnal variation, nighttime concentrations were generally greater than daytime concentrations, and the nighttime concentrations were likely to increase in eastern regions and decrease in western regions. Furthermore, the daytime and nighttime ratios (calculated by daytime/nighttime concentration divided by the daily-mean concentration) exhibited different interannual trends, with the daytime ratios decreasing and nighttime ratios increasing, especially in the northeastern and western regions. The findings indicate that the air pollution control efforts have been generally successful, but with large regional disparities, and highlight the importance of controlling crop residue burning, dust events, and nighttime emissions for specific seasons and regions.

Hypertension cascade across three healthcare systems and in relation to the level of implementation of the integrated care package of hypertension

Introduction: Primary health care (PHC) systems across the globe are struggling to produce an effective response to the rising burden of disease related to Type 2 Diabetes (T2D). However, effective T2D care at the PHC level – the ‘Integrated Care Package (ICP)’– exists and is cost-effective. Further, there is evidence that this integrated care package ((1) structure) leads to improved care processes (2), to health care responsive to people’s needs and eventually to better health outcomes (3). There is however a clear need for an assessment framework to enable countries to evaluate their progress towards integrated care for T2D.&#x0D; We aim to test an assessment framework incorporating these 3 elements: (1) a tool to assess the degree to which the T2D care provided corresponds to the ICP for T2D (structure); (2) cascades-of-care to visualize and detect the ‘leakages’ at each separate step of the care continuum (process and outcomes of T2D care); and (3) a contextualization of (1) and (2) in order to explain why the implementation of specific ICP elements has or has not led to the expected outcomes. This framework will be tested in 3 countries with different PHC approaches, namely Slovenia, Belgium and Cambodia.&#x0D; Methods: A mixed methods design is used. First, information about the level of ICP implementation is collected using the ICP Grid at the health care facility level. Secondly, patient level data is used to build de T2D cascades-of-care: we rely on representative survey data (5000 individuals) in Cambodia, on health insurance (+ laboratory) data in Belgium and routine data in Slovenia. Where feasible, we used ICP scores as explanatory variables explaining the drops in the cascade. Thirdly, expert consultations and stakeholder interviews were used to contextualize the findings.&#x0D; Results: The ICP grid scores showed considerable variations in the implementation of the ICP for patients with T2D between Belgium, Slovenia, and Cambodia – with Slovenia consistently reporting the highest scores. However, important in-country variations were observed for Belgium and Cambodia indicating that specific initiatives have resulted in higher levels of integrated care. In terms of T2D care process and outcomes, the country cascades-of-care display similar profiles with the biggest drops at the ‘diagnosis’ and ‘under control’-bars. The qualitative data on the health system clearly demonstrate that the context can hamper (1) the construction of the cascades (i.e. in Belgium and Cambodia due an absence of a routine monitoring system) and (2) the linking of the ICP grid data with the cascade-of-care data (i.e. in Cambodia where the private sector takes up a large proportion of T2D care).&#x0D; Conclusions: The developed framework offers a promising strategy to assess (1) the progress made in ICP implementation in PHC for T2D as well as (2) its impact on the T2D care process and outcomes. As such, the framework offers policy makers and stakeholders a tool to monitor T2D care and adapt specific elements where required. The study, however, also indicated severe challenges in collecting the required data which also limited the cross-country comparability of the produced outcomes.&#x0D;

Korpusni pristup engleskim posuđenicama

Unadapted English loanwords have become part of informal communication in many languages, including Croatian. Their use is often motivated by the lack of adequate native equivalents, exposure to English through the media, but also by the prestigious status of the English language. A vast body of research has been dedicated to lexical borrowing, especially from English. At the same time, corpus analyses have mostly been conducted on smaller, ad hoc corpora. Therefore, the goal of this paper is to present the database of English loanwords in Croatian. The database was developed by algorithmic and manual classification of words from the Corpus of Croatian news portals, ENGRI, and provides a list of 9,452 unadapted English loanwords together with the data on their absolute and relative frequencies. The analysis showed that most loanwords (75.85%) appear less than 50 times, while a total of 44.78% of words appear 10 times or less. The biggest drop in the number of loanwords is observed in the categories of occurrence above 500, while only 27 words appear 5,000 times or more. The most frequent English loanword in the corpus is ‘show’ with 80,805 occurrences, which is 0.0122% of all words in the corpus. The analysis of loanwords that occur more than 5,000 times showed that most of them have Croatian translation equivalents,which confirms the role of the media in the introduction of new words. In addition to providing an insight into the occurrence of English loanwords in Croatian, this database also represents a valuable contribution to Croatian computational linguistics resources and enables future experimental research by providing the data on word frequency.

On the dynamics of a big drop in acoustic levitation

The acoustic levitation of a drop is a complex process that needs a high-intensity non-linear acoustic field; the sound pressure level has to be sufficient to raise the drop but not too large to avoid its atomization, limiting the maximum size of a levitated drop. In this paper, we present an experimental study of big drops levitation with a volume up to 166±2μl and with an effective diameter 6.82±0.03mm, figures one magnitude order larger than the maximum drop volume reported in the literature. Our acoustic levitator produces an acoustic field with a different shape than the field produced by a typical levitator. Our measurements and simulations of the acoustic field and drop dynamics suggest that the levitation of big drops is possible because the distribution of radiation pressure over the drop surface in our system differs from that in a typical acoustic levitator; its maximum value appears on the top surface of the drop and not in its equator. In addition, we determined the upper and lower limits of sound pressure necessary for the levitation of drops of various sizes that allow our system.

Reducing stress and anxiety in cancer patients with the use of virtual reality.

303 Background: Applications of virtual reality (VR) have impacted every sphere of civilization, from speculative architecture to the practice of medicine. Building on the body of research already showing the benefits of immersive VR experiences, the goal of our study was to determine whether the stress and anxiety experience of different types of cancer could be mitigated by using virtual reality, specifically through relaxing VR experiences. Methods: A comparative observational study was conducted at community outpatient offices for patients who wanted to improve patient experience throughout their cancer treatment. Patients who had symptoms of nausea, dizziness, and vision issues were excluded from the study. The VR intervention consisted of patients watching a relaxation VR 360 video on the YouTube app every day for one week on the Google Cardboard VR headset. Pre- and post VR intervention scores were recorded using a DASS21 questionnaire. The mean differences in scores as well as t-tests were compared between individuals to see if VR improved patient’s experience through one’s cancer treatment. Results: There were 115 subjects ( n = 115). There was an average reduction score of 6.50 points with stress seeing the biggest drop in score of 2.71 points. Breast cancer was the most common cancer diagnosis. Metastatic cancer was the cancer with the biggest change in VR intervention with an average decrease of 12.83 points. Conclusions: Virtual reality (VR) has been proven to significantly reduce the psychological discomfort, including stress, anxiety, and depression experienced during treatment, in the context of caring for cancer patients. The empirical results strongly imply that VR is an effective therapeutic intervention modality in the inpatient setting, with compelling implications for the use of VR technology in the future to lessen the physical and psychological suffering of cancer patients.[Table: see text]

A Review on the Coalescence of Confined Drops with a Focus on Scaling Laws for the Growth of the Liquid Bridge.

The surface-tension-driven coalescence of drops has been extensively studied because of the omnipresence of the phenomenon and its significance in various natural and engineering systems. When two drops come into contact, a liquid bridge is formed between them and then grows in its lateral dimensions. As a result, the two drops merge to become a bigger drop. The growth dynamics of the bridge are governed by a balance between the driving force and the viscous and inertial resistances of involved liquids, and it is usually represented by power-law scaling relations on the temporal evolution of the bridge dimension. Such scaling laws have been well-characterized for the coalescence of unconfined or freely suspended drops. However, drops are often confined by solid or liquid surfaces and thus are a different shape from spheres, which affects their coalescence dynamics. As such, the coalescence of confined drops poses more complicated interfacial fluid dynamics challenges compared to that of unconfined drops. Although there have been several studies on the coalescence of confined drops, they have not been systematically reviewed in terms of the properties and geometry of the confining surface. Thus, we aim to review the current literature on the coalescence of confined drops in three categories: drop coalescence on a solid surface, drop coalescence on a deformable surface, and drop coalescence between two parallel surfaces with a small gap (i.e., Hele-Shaw cell), with a focus on power-law scaling relations, and to suggest challenges and outlooks for future research on the phenomena.

Screw preload loss under occlusal load as a predictor of loosening risk in varying dental implant designs

PurposeScrew loosening is a critical aspect of an implant design, as it can lead to implant failure. This study proposes a methodology and qualitatively assesses the potential of screw loosening risk for various types of screw heads and implant fixture-abutment connections. It is assumed that the risk of screw loosening is related to the drop in loosening moment under occlusal loads. The methodology and an assumption is verified by confronting the results with laboratory tests. MethodsNumerical simulations supplemented with semi-empirical equations were employed to estimate a loosening moment change under occlusal loads. The loosening risk was estimated by comparing the value before and after application of a compressive occlusal load of 150N. The procedure was carried out for 289 implant designs with smooth transition between flat to tapered shape of a screw head and an fixture-abutment connection. All analyses were conducted using Abaqus software. Pearson and Spearman correlation coefficients for normalised change in a screw loosening moment drop has been computed for numerical and laboratory tests. ResultsThe statistical analysis (Pearson, ρ = 0.8, Spearman, rs = 0.85) indicates very high correlation and confirms that the general tendencies observed in laboratory tests are reflected in the proposed procedure. The procedure was used for various geometries and the following results are presented: a screw loosening drop, implant stiffness and a tightening moment. The loosening moment drop achieves the extreme values of 6% and 24%. The biggest drop is an effect of a conical implant-abutment connection and a flat screw head while the lowest was recorded for a flat implant-abutment interface regardless of a screw head type. A low drop is also observed for a strongly conical screw head. ConclusionsThe proposed methodology exhibited very good correlation when confronted with laboratory tests, supporting a screw preload reduction under occlusal load as a key factor in screw loosening. Analysis across a wide spectrum of implant designs revealed geometry significantly impacts loosening potential under occlusal loads. Two key features were identified as favourable - an abutment-fixture butt joint and a tapered screw. The results also enable prediction of qualitative geometry effects on loosening risk.

TRENDS IN JOB CREATION IN EUROPE

The main purpose of this paper is to identify new job creation in Europe and analyzes different findings from literature sources about trends that are currently more active.With work, we can refer to an activity that is carried out by one or more people voluntarily to achieve payment. And by work trend, we refer to that type of work which has gained a greater expansion and is being worked on more in the European market, not every time it is meant that that work is paid more but that it is simply being demanded more by companies, businesses, institutions private or public.The methodology used for this paper is a literature review of the latest research and data about job creation in Europe. The labor market in Europe recently started to change a lot, especially during and after the pandemic, thus enabling great growth in the technology sector. Considering that new technologies are constantly coming into this stream, new opportunities are also being made possible. But not always with good results, as Al technology is predicted to replace thousands of workforces in the future. The strongest growth of jobs is predicted in professional, scientific, and services technical, as well as in human health and social work, while the biggest drop can happen in production. Technology has and will continue to create new jobs, recently we can often see calls for training for web developer, application developers, media managers, influencers, etc.Therefore, from this research review, we concluded that the main driver of job creation in Europe has been the service sector, which accounts for almost 80% of total employment in the EU. In recent years, the demand for highly skilled workers has increased, mainly due to the increased demand for ICT and other technology related skills. Additionally, the digitization of manufacturing has led to a demand for workers with technological skills in the manufacturing sector. From all mentioned above it would be highly recommended that the European labor market be more careful about the future steps and invest in the right paths for better development in the future, such as pieces of training, education, diversity, and also on the latest technology trends.

Development of air-assisted atomization device for the delivery of cells in viscous biological ink prepared with sodium alginate

Skin wounds, especially large-area skin trauma, would bring great pain and even fatal risk to patients. In recent years, local autologous cell transplantation has shown great potential for wound healing and re-epithelialization. However, when the cell suspension prepared with normal saline is delivered to the wound, due to its low viscosity, it is easy to form big drops in the deposition and lose them from the wound bed, resulting in cell loss and uneven coverage. Here, we developed a novel air-assisted atomization device (AAAD). Under proper atomization parameters, 1% (w/v) sodium alginate (SA) solution carrier could be sprayed uniformly. Compared with normal saline, the run-off of the SA on the surface of porcine skin was greatly reduced. In theory, the spray height of AAAD could be set to achieve the adjustment of a large spray area of 1–12 cm2. In the measurement of droplet velocity and HaCaT cell viability, the spray height of AAAD would affect the droplet settling velocity and then the cell delivery survival rate (CSR). Compared with the spray height of 50 mm, the CSR of 100 mm was significantly higher and could reach 91.09% ± 1.82% (92.82% ± 2.15% in control). For bio-ink prepared with 1% (w/v) SA, the viability remained the same during the 72-h incubation. Overall, the novel AAAD uniformly atomized bio-ink with high viscosity and maintained the viability and proliferation rate during the delivery of living cells. Therefore, AAAD has great potential in cell transplantation therapy, especially for large-area or irregular skin wounds.

An insight into the microphysical attributes of northwest Pacific tropical cyclones

Northwestern Pacific (NWP) tropical cyclones (TCs) impose a severe threat to the life and economy of the people living in East Asian countries. The microphysical features, mainly the raindrop size distributions (RSD) of TCs that improve the modeling simulation and rainfall estimation algorithms, are limited to case studies, and an extensive understanding of TCs’ RSD is still scarce over the northwest Pacific. Here, we examine a comprehensive outlook on disparities in microphysical attributes of NWP TCs with radial distance and storm type, using sixteen years of disdrometer, ground-based radar, and reanalysis datasets in north Taiwan. We find that dominant stratiform precipitation in the inner rainbands leads to the occurrence of more bigger drops in the inner rainbands than the inner core and outer rainbands. Moreover, a decrease in mass-weighted mean diameter and rainfall rate with radial distance is associated with a reduction in moisture availability for various circumstances, and this association is deceptive in intense storms. Our findings give an insight into crucial processes governing microphysical inequalities in different regions of NWP TCs, with implications for the ground-based and remote-sensing rainfall estimation algorithms.