Terms Of Stability Research Articles

A Retrospective Study Using a Novel Body-Shift Implant Design with a Novel Alloplastic Particulate Grafting Material in Immediate Extraction Sockets.

With resurgence in immediate tooth replacement therapy (ITRT) as a method of preserving both hard and soft tissues for improved aesthetic outcomes, this multicenter, prospective study looked at two novel products and their effect on those outcomes. Thirty-one maxillary single-tooth implants were included, of these 54.8% were central incisors, 25.8% lateral incisors, and 19.4% canines. Three complications were reported; one case nondraining fistula, one case a nonseated provisional restoration, and one case a fractured zirconia abutment. The definitive restorations were delivered between 4 hours and 18 months postimplant placement and all restorations were screw-retained. ITRT is frequently utilized when a tooth to be extracted will be replaced by an implant aiding in preservation of the hard and soft tissue that may be lost due to resorption during healing of the extraction socket. The narrower neck region of the Inverta implant results in thicker crestal bone around the implant, where loading under function occurs. Grafting that area around the implant at placement with EthOss results in more predictable bone stability in the long term.

Monetary and Fiscal Policy on Inflation in Indonesia: Threshold Vector Autoregression Approach

The combination of monetary and fiscal policies is used to stabilize prices in Indonesia. The purpose of this study is to analyse the role of monetary and fiscal policies in stabilizing prices in Indonesia through the threshold concept. The data used is time series (2013Q1-2023Q2) with the Threshold Vector Autoregression method. The results show that the interest rate and budget thresholds can affect inflation stability. Other variables, such as the exchange rate, output gap, and FFR, have varying effects depending on the threshold. Thus, combining adjustments in monetary and fiscal policies and understanding the impact of inflation at various policymakers can better manage economic growth and maintain price stability in the long term.

Computing Accurate & Reliable Rovibrational Spectral Data for Aluminum-Bearing Molecules.

The difficulty of quantum chemically computing vibrational, rotational, and rovibrational reference data via quartic force fields (QFFs) for molecules containing aluminum appears to be alleviated herein using a hybrid approach based upon CCSD(T)-F12b/cc-pCVTZ further corrected for conventional CCSD(T) scalar relativity within the harmonic terms and simple CCSD(T)-F12b/cc-pVTZ for the cubic and quartic terms: the F12-TcCR+TZ QFF. Aluminum containing molecules are theorized to participate in significant chemical processes in both the Earth's upper atmosphere as well as within circumstellar and interstellar media. However, experimental data for the identification of these molecules are limited, showcasing the potential for quantum chemistry to contribute significant amounts of spectral reference data. Unfortunately, current methods for the computation of rovibrational spectral data have been shown previously to exhibit large errors for aluminum-containing molecules. In this work, ten different methods are benchmarked to determine a method to produce experimentally-accurate rovibrational data for theorized aluminum species. Of the benchmarked methods, the explicitly correlated, hybrid F12-TcCR+TZ QFF consistently produces the most accurate results compared to both gas-phase and Ar-matrix experimental data. This method combines the accuracy of the composite F12-TcCR energies along with the numerical stability of non-composite anharmonic terms where the non-rigid nature of aluminum bonding can be sufficiently treated.

The Role of Monetary and Fiscal Policies in Ensuring Financial Stability

This study examines the effects of monetary and fiscal policies on financial stability in the Turkish economy for the period 2005Q1-2024Q1. For this purpose, a comprehensive Macro-Financial Stability Index reflecting the changes in the financial stability of the Turkish economy is calculated. Monetary policy interest rate and tax revenue data were used as monetary and fiscal policy variables, respectively. According to the results of the Autoregressive Distributed-Lag (ARDL) model, it is seen that increases in policy interest rates negatively affect financial stability in the short and long term. It is determined that the increase in tax revenues has negative effects on financial stability in the short term and a positive impact in the long term. Sudden and sharp increases in interest rates can disrupt financial stability in the short term. Increasing tax revenues will help sustain public debt and finance public expenditures. Policymakers can maintain financial stability by carefully managing interest rates and tax policies.

Dual Open Atom Interferometry for Compact and Mobile Quantum Sensing.

We demonstrate an atom interferometer measurement protocol compatible with operation on a dynamic platform. Our method employs two open interferometers, derived from the same atomic source, with different interrogation times to eliminate initial velocity dependence while retaining precision, accuracy, and long term stability. We validate the protocol by measuring gravitational tides, achieving a precision of 4.5 μGal in 2000 runs (6.7h), marking the first demonstration of inertial quantity measurement with open atom interferometry that achieves long-term phase stability.

Robust task space position constraint control of kinematically redundant manipulators: A barrier Lyapunov approach

This study introduces a novel robust control strategy for kinematically redundant robotic manipulators, aimed at maintaining task space position errors within predefined constraints. The proposed design ensures that the tracking errors for both the end-effector’s position and sub-tasks are uniformly ultimately bounded, despite dynamic uncertainties. It also guarantees that the position error of the end-effector stays within a predetermined safe region and achieves predictable overshoot and transient performance, provided the initial error is bounded within this safe area. The incorporation of a BLF into our stability analysis is the cornerstone of our methodological advancement, which is crucial for imposing predefined constraints on task space position errors. Simulations and experiments confirm the controller’s effectiveness, showing consistent error maintenance, stability of error terms, and boundedness of closed-loop signals. Tighter constraints increased control effort but led to faster convergence and improved tracking performance.

Penerapan Angsuran Pajak Penghasilan Pasal 25 Bagi Wajib Pajak Badan untuk Efisiensi Keuangan CV Visi Printing

This study discusses the implementation of Article 25 Income Tax (PPh) installments for corporate taxpayers, specifically at CV Visi Printing, and its impact on the company's financial efficiency. Article 25 PPh is a tax paid periodically throughout the fiscal year based on estimated tax liabilities, aimed at helping companies manage their tax obligations more effectively. This research employs a qualitative method with an analysis of the financial statements of CV Visi Printing for the year 2022. The results indicate that the Article 25 PPh installment applied by CV Visi Printing, amounting to Rp 3,553,000 per month, positively affects the company's cash flow efficiency. This gradual tax payment helps the company maintain liquidity and reduces the burden of a large tax payment at the end of the year. Furthermore, with proper tax planning, CV Visi Printing can allocate financial resources more effectively to support other operational activities. The implementation of this tax installment also enhances the company's tax compliance, avoiding potential penalties, and maintaining the company's financial stability in the long term. The study concludes that the application of Article 25 PPh installments plays a crucial role in improving the company's financial efficiency through better cash flow management and optimal tax planning.

Long term stability of Trichoderma mediated copper nanoparticles

Long term stability of Trichoderma mediated copper nanoparticles

An Improved Algorithm of Coal Pillar Yield Zone Width based on Strip Mining of Thick Unconsolidated Seam

The tribes in mines are an effective method in green mining. In order to ensure the sustainable use of coal resources, this method has attracted much attention and research at home and abroad. During the mining of the application band, the stability of the strip coal pillar is an important factor in the deformation of the surface of the trusteen to minimize the surface of the surface, so that the surface sinking is limited within a certain range, and the adoption rate is as good as possible to reasonably determine the width and width and the width and the width and reasonableness and the width and the width and the width and the width and reasonableness. Leave wide size to ensure the long -term stability of coal pillar. This article is mainly aimed at the mining zone of the giant loose layer mining area. Considering the influence of the loose layer, the effect of adding a loose layer thickness, and improving algorithm on the width formula of the A.H. Wilson yield area. It is proposed to replace the calculation of gH to the improvement of g1h+g2(H-h), g1and g2 are loose layers of capacity and base rock capacity, and propose simplifying the assumption Y=l1mH+l2mh for the formula. The algorithm is applied to practice. The yield width Y= 12.33m and the remaining width amin = 75.8m calculated by the algorithm are 1.8m wider and 12m wider than those calculated by the traditional algorithm, the feasibility of the improved algorithm of coal pillar yield zone width is verified.

(Invited) Photon-Induced Plasmas and Contamination Control in Semiconductor Industry

One of the crucial steps in the fabrication process of computer chips is photolithography. This process uses Extreme Ultraviolet (EUV) photons with a wavelength as short as 13.5 nm, which are transported from their source, via a multitude of multilayer mirrors and the mask (or reticle) to the wafer, which is to be illuminated. As this high energy radiation is absorbed by almost anything, the inside of such a photolithography scanner is designed to be operated under low pressure hydrogen gas.Everywhere the beam of EUV photons travels, it photo-ionizes the background gas, turning it into a so-called EUV-induced plasma. The resulting plasma is a peculiar one, as it is governed by high transients in the time and space domain.The inherent presence of an EUV-induced plasma in high-end lithography scanners may have both positive and negative impact on the process in the machine and on its yield, dependent on local conditions and way of operation. For instance, ions – created in the plasma and accelerated to high energies in the space charge region at plasma-surface interfaces - may impact long term stability and lifetime of delicate and expensive optical parts. Also, the plasma inside the scanner may loft contaminating particles and transport them to locations which are extremely vulnerable to such contaminants. Contrary, the chemistry, induced by the plasma, may assist in cleaning the aforementioned optics parts from hydrocarbon contamination. Nevertheless, in order to optimize the overall photolithography process, in-depth understanding and metrology of such plasmas is desired.This contribution first elaborates on the physics behind the formation and decay processes of this peculiar type of plasma. A general description of the elementary plasma processes is discussed.Consecutively, some key diagnostics – and their developments over the last years - will be elaborated on. The first set of key diagnostic includes Electrostatic Quadrupole Plasma analysis (EQP) and Retarding Field Energy Analyzer (FREA) for the measurement of ion fluxes and energies, and ion energy distribution functions. The second key diagnostic evolves around the interaction between the induced plasma and standing microwaves and is called Microwave Cavity Resonance Spectroscopy (MCRS). The MCRS technique is based on exciting a standing wave in a cylindrical resonant cavity of which the resonance frequency is a measure for the density of free electrons present in the plasma.The last part of this contribution reflects on recent work uncovering how the induced plasma affects the long-term release from surfaces of particles that were immobile before plasma operation. Results from plasma exposure measurements using an off-line hydrogen plasma sources indicate a significant morphology of lead and tin based particles.

New Observations on Material Processing and Investigation on Long Term Stability for Proton Conducting Solid Oxide Electrolysis Cells (P-SOEC)

New clean energy technologies with higher energy conversion efficiency and lower emissions are needed to meet the global energy and climate change challenges. As an efficient clean energy conversion device, solid oxide electrolysis cells (SOEC) have emerged as a promising avenue for hydrogen production, garnering considerable attention in recent years. Compared with conventional oxygen ion-conducting SOECs (O-SOECs), proton-conducting solid oxide electrolysis cells (P-SOEC) can operate at a lower temperature (400-600°C) because of the generally lower activation energy associated with proton conduction in oxides compared to oxygen ion conduction, thereby reducing operating costs and the need for high-temperature material technology. Central to the functionality of P-SOECs is the proton-conducting electrolyte, which profoundly influences the electrochemical performance and stability of the cell. Extensive researches have been conducted to develop and design excellent protonic ceramic as electrolyte materials. However, the challenge remains on delivering high conductivity after experiencing the high-temperature ceramic heat treatments. In this work, we reported segregation phenomenon during the aging process of the most employed protonic ceramics and its significant impact on microstructure and conductivity. We also investigate the long term stability of the P-SOEC under varied conditions with different electrolytes.

(Keynote) Controlling Ion Migration in Metal Halide Perovskites for Better Solar Cell Stability

The ability to tune the bandgap of metal halide perovskites through compositional alloying of the halide ion is of interest in designing tandem solar cells and light emitting displays. However, photoinduced migration of halide ions can significantly affect the device performance. One such property is photoinduced phase segregation in mixed halide perovskites (MHP), which forms bromide rich and iodide-rich domains. These domains act as charge carrier traps and lower the efficiency of perovskite-based devices.[1,2] The thermodynamic and redox properties of halide perovskites provide a strong driving force for hole trapping and oxidation of iodide species. Thus, the mobility of halides and their susceptibility to hole-induced oxidation play a crucial role in determining the long-term stability of metal halide perovskite solar cells.When Ruddlesden-Popper 2D mixed-halide perovskite films with spacer cations such as butylammonium are introduced into three-dimensional (3D) perovskite films, they can stabilize them against moisture-induced degradation at room temperature. While such passivation of 3D perovskites using 2D perovskites has been reported widely, the instability of the 2D/3D interface during long term solar cell operation can be problematic.[3,4] The cation migration under light and heat can significantly alter the 2D/3D interface, thus affecting the solar cell performance. Thus, suppression of halide ion migration as well as cation migration remains a key factor in achieving long term stability and improving efficiency of perovskite solar cells and light emitting devices.

Fabricated Nanocomposite ZnO-Loaded PVA/PEDOT:PSS Via Electrospinning for Ammonia Detection

The problem of air pollution has increased dramatically around the world and there are concerns about the detection of hazardous gases present in the atmosphere as they are very harmful to human health. Remarkably, ammonia (NH3) gas is one of the most hazardous environmental pollutants, contributing to chronic lung disorders and respiratory inflammations. Gas sensors play a crucial role in monitoring and detecting toxic gases, ensuring public safety, preventing food spoilage, and monitoring air quality. Typically, a resistive gas sensor comprises an active sensing material whose electrical conductivity is sensitive to gases. Up to now, lots of work have been related to MOS-based gas sensors. However, MOS-based sensors still face some challenges in selectivity, response/recovery times, and stability. Therefore, this study is dedicated to the investigation of Polyvinyl alcohol (PVA)/Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and ZnO-loaded PVA/PEDOT:PSS electrospun composite nanofibers for gas sensing application. The successful integration of ZnO nanoparticles into the composite polymer matrix was confirmed through a combination of structural, morphological, optical, and thermal analyses, revealing a fibrous structure with enhanced morphology. The gas-sensing study demonstrated the superior performance of the ZnO-loaded fibers in NH3 gas detection, showcasing enhanced sensitivity, selectivity, and long-term stability compared to its pristine counterpart (PVA/PEDOT:PSS). Fabricated sensors showed selectivity and 70 % response to 100 ppm NH3, as well long- term stability for up to 12 months. Our findings not only contribute to the understanding of composite sensor materials but also offers promising candidates for the development of high-performance flexible gas sensors. Acknowledgment: This work was supported by the Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. AP23489498). "Development of advanced polymer-based sensor containing biowaste-derived carbon for detection of NH3" Figure 1

Developing Cobalt-Free, Strontium Titanium Ferrite Based Air Electrodes for Solid Oxide Cells

The development of stable air electrodes for Solid Oxide Cells operating at reduced temperatures (≤700°C) creates unique material design challenges. These electrodes must not only show excellent oxygen evolution and oxygen reduction reaction rates, but also be able to maintain these fast rates over the 40,000hr lifetimes envisioned for solid oxide cells. One material of significant interest for this is Sr(Ti0.3Fe0.7)O3-δ (STF), which is a mixed ionic-electronic conducting (MIEC) perovskite that has shown performance similar to that of LaxSr1-xCoyFe1-yO3-δ (LSCF) (1). Performance and stability substantially better than that of LSCF can be achieved by substitution of as little as 7% Cobalt onto the B-site of STF. (2) Reducing or eliminating the Cobalt while maintaining performance is desirable to avoid issues with its toxicity, availability, and cost. In this work, we explore Cobalt-free STF-based air electrodes; strategies explored include composites of STF and Gd0.1Ce0.9O2-δ (GDC), PrOX infiltration, and alternative B-site substitutions of STF with Ni and Cu.One of the aims of GDC-STF composite electrodes is to improve the thermal expansion coefficient (TCE) match and adhesion with the GDC reaction barrier layer, presumably making them more robust in thermal cycling. The 50% STF – 50 % GDC composites yielded polarization resistance values similar to those of pure STF electrodes, ~ 0.2 Wcm2 at 700C in air. Over the temperature range of 200°C-850°C, the coefficient of thermal expansion (CTE) of STF-GDC closely matches the CTE of GDC (~12×10-6 K-1), representing a significant improvement compared to STF. As previously discussed by Lu et al (3), the performance of pure STF electrodes can be significantly improved by infiltration with PrOx. Here we show that infiltration of STF-GDC composites with 1, 2, or 3 PrOx infiltration steps significantly decreases initial polarization resistance, e.g., from 0.5 to < 0.2 Wcm2 at 650C, with two infiltration steps yield the lowest polarization resistance. Furthermore, long term stability tests over >2 kh show that STF-GDC electrode degradation rates can be decreased by a factor of 4 through infiltration.Additional results for STF substituted with alternatives to Co, including Cu, Ni, and Cu-Ni, will be presented, along with the effects of exsolution induced by pre-reduction. S.-L. Zhang, D. Cox, H. Yang, B.-K. Park, C.-X. Li, C.-J. Li and S. A. Barnett, Journal of Materials Chemistry A, 7, 21447 (2019).S.-L. Zhang, H. Wang, M. Y. Lu, A.-P. Zhang, L. V. Mogni, Q. Liu, C.-X. Li, C.-J. Li and S. A. Barnett, Energy & Environmental Science, 11, 1870 (2018).M. Y. Lu, R. Scipioni, B.-K. Park, T. Yang, Y. A. Chart and S. A. Barnett, Materials Today Energy, 14, 100362 (2019).

Short term stability of the sputum microbiota in bronchiectasis and cystic fibrosis

Short term stability of the sputum microbiota in bronchiectasis and cystic fibrosis

Facile synthesis of cerium doped Co-Mn-FeO nano ferrites as highly sensitive and fast response humidity sensors at room temperature

Herein, this work presents the facile synthesis of Cerium (Ce3+) doped Cobalt-manganese-iron oxide ferrite as an effective humidity sensor operated at ambient temperature. This work reports, one step solution combustion technique to synthesize Co0.5Mn0.5Fe2−xCexO4 (x = 0.0, 0.050 and 0.1) ferrites. The structural and morphological features of the synthesized Co0.5Mn0.5Fe2−xCexO4 ferrites NPs were investigated through scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and ultraviolet visible (UV–visible) spectroscopy. The XRD results indicates the creation of single phase in pure Co0.5Mn0.5Fe2−xCexO4 ferrite that remains unchanged by the mechanism of Ce3+inclusion. The humidity sensing mechanism was systematically investigated using adsorption–desorption isotherms. Highest humidity sensing response was achieved for Co0.5Mn0.5Fe2−xCexO4 (x = 0.1) ferrite of the order of 98 % in comparison to the pure Co0.5Mn0.5Fe2−xCexO4 (x = 0) which is about 41 %. The sensors response and recovery times for the Co0.5Mn0.5Fe2−xCexO4 (x = 0.1) was recorded to be 36 s and 63 s respectively and the sensors long term stability was examined for a duration of 90 days. The results of the present investigation offer new dimensions to fabricate high performance, room temperature operable humidity sensors for next generation sensors applications.

APPROACHES TO ASSESSING THE MINIMUM SUFFICIENT LEVEL OF FINANCIAL INDEPENDENCE OF THE ORGANIZATION

The coefficient of financial independence is an important indicator characterizing the level of financial stability of the organization. It reflects the level of use of own funds by the company to carry out its activities. This indicator is also an important analytical tool for investors, creditors and management personnel, as it helps to assess the level of risk associated with the company's financial policies and its ability to ensure financial stability in the long term. The article proposes a new approach to assessing the minimum necessary amount of equity capital for the organization and the sufficient (smallest) level of the coefficient of financial independence based on it.

Phenophases of Species of the Salix Genus in the Conditions of Osh City

The study of the phenology of urban trees and shrubs has increased dramatically worldwide in recent years, as changes in plant phenology may indicate the impacts of climate change at different scales. The aim of the study is to determine the patterns of the seasonal rhythm of individual species belonging to the Salixgenus in Osh. The studies were conducted in the period 2019-2023 at the Department of Biology, Chemistry and Nature Management of Osh State Pedagogical University. The subject of the study is 4 species of the genus Salix: Salix babylonica L., Salix turanica Nasarow, Salix wilhelmsiana M. Bieb. and Salix tenuijulis Ledeb. Phenological observations were carried out for 5 years using generally accepted phenological methods. The results of phenological observations in 2019-2023 show that the duration of the growing season in urban conditions is 240-245 days, and this indicator varies depending on climatic conditions. The observed species have differences in the flowering sequence, the beginning and duration of flowering. The total duration of flowering in the studied species is 25-35 days. The seasonal type of growth and phenological development of plants of the genus Salix is characterized by an early onset and late end of vegetation, stability of average phenological terms. Such a phenological rhythm of the studied species of the genus Salix makes it possible to consider cultivation for decorative and environmental purposes in urban conditions promising.

Assessment of Sentinel-6MF low resolution numerical retracker over ocean: Continuity on reference orbit and improvements

On April 7th, 2022, after 16 months of tandem flight with its predecessor, Jason-3, the Copernicus Sentinel-6 Michael Freilich (MF) satellite became the regional reference mission in the sea level climate record. Its on-board altimeter, POSeidon-4, is the first radar altimeter allowing a simultaneous and continuous acquisition in Low Resolution (LR) as well as in High Resolution (HR) mode. In March 2023, a new version of Sentinel-6MF ground segment (processing baseline F08) brought major improvements for the LR mode, with the implementation of a numerical retracker in addition to the historical Maximum Likelihood Estimator-4 (MLE4) retracker. The present work covers the full assessment of this new LR numerical retracker over open ocean, spanning from the retracker’s outputs to their contribution to the Global Mean Sea Level. Improvements with respect to MLE4 appeared mainly in terms of sea-state related effects, leading to a 60 % reduction of the Sentinel-6MF/Jason-3 Sea Surface Height Anomaly bias correlated to Significant Wave Height. Such result improves an already very good continuity between the two missions. The agreement between Jason-3 and Sentinel-6MF over the tandem phase is also precisely assessed. The small remaining discrepancies are attributed to different components of the system, such as the orbit, the radiometer wet troposphere correction, C-band processing or an MLE4-based empirical adjustment. Another important feature of the Sentinel-6MF numerical retracker is the use of the in-flight Point Target Response to mitigate instrumental changes and thus improve long term stability. The Global Mean Sea Level analysis presented in this paper shows no significant trend difference with respect to Jason-3, once the radiometer wet troposphere correction impact is removed.

Asymmetric impact of climate change on banking system stability in selected sub-Saharan economies

This study is an empirical examination of the asymmetric impact of climate change on banking system stability in selected sub-Saharan economies. The study leverages a quantitative research approach through a panel non-linear ARDL framework and data from 29 selected economies, which spans 1996-2017. Findings from the study reveal that in the long term, partial sums of temperature have an insignificant relationship with banking system stability. Further, partial sums of precipitation are negatively related to banking system stability in the long term. The finding indicates that both positive and negative precipitation do harm banking system stability in the selected sub-Saharan economies. Moreover, we find that partial sums of greenhouse gas emissions had an insignificant relationship with banking system stability. In addition, we conclude that greenhouse gases (positive and negative) do not impair banking system stability in selected sub-Saharan economies in the long term. We surmise from the findings that both positive and negative climate change indexes are harmful to banking system stability. On the short-term asymmetric impact, we discover that partial sums of temperature, precipitation, and climate change index do not harm banking system stability. However, negative greenhouse gas emissions are pernicious to the banking system’s stability in the short term. Conversely, positive greenhouse gas levels were statistically insignificant. The study recommends that central banks and monetary authorities in Sub-Saharan Africa design green banking policies to push the climate change agenda in the banking sector.