bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating the adsorption mechanism of zinc chloride-modified porous carbon for sulfadiazine removal from water
Authors: Wang Jiaqi , Zhang Lulu , Cao Tingting , Zhang Haiou , Sun Yingying , Wang Yingguo , Yang Chenxi , Hu Yantao 
Published: July 2024

Abstract
Sulfadiazine (SDZ) is a commonly used antibiotic in medicine, aquaculture, and animal husbandry. However, its misuse has resulted in its release into soil and water environments, posing a gradual threat to the environment and human health. In this study, cotton pulp, poplar sawdust, and corn stover were chosen as raw materials. Zinc chloride (ZnCl2) was used as a modifier to prepare modified porous carbon through pyrolysis at different carbonization temperatures (400 and 800°C). The objective was to investigate the adsorption effect and mechanism of modified porous carbon on SDZ in aqueous environments, as well as the effect of different biomass fractions of the carbon source on the adsorption effect. The physical and chemical properties of the modified porous carbon were characterized by various means of characterization, and the results showed that the high temperature and modification effects made the adsorbent material possess a larger specific surface area and richer pore structure, higher aromaticity, higher degree of graphitization, etc., which would be beneficial for the adsorption of SDZ. Among them, CCPZ800 showed the highest saturation adsorption of SDZ, Q
max = 425.45 mg/g. The adsorption experiments were carried out by changing the initial conditions and fitted with kinetic and isothermal adsorption to further explain the adsorption mechanism of modified porous carbon on SDZ in conjunction with the adsorption of SDZ by hydrothermal carbon materials. The results showed that the adsorption of modified porous carbon on SDZ conformed to the quasi-secondary kinetic and Freundlich isothermal adsorption models. Adsorption mechanism of SDZ on modified porous carbon followed a multimolecular layer adsorption, with chemical adsorption being the dominant process. Both physical adsorption and chemical adsorption occurred simultaneously, with the main adsorption mechanism being π–π conjugation. In addition, compositional distribution of biomass from different carbon sources results in variations in pyrolysis mode and pyrolysis products, which in turn affect adsorption. By analyzing the effect of variability in the composition of biomass on the adsorption effect of SDZ, it can be concluded that higher cellulose content in the carbon source leads to a better adsorption effect of SDZ. The study showcases the effectiveness of ZnCl2-modified porous carbon in removing SDZ from water, offering insights into the selection of raw materials for this adsorbent preparation.
Capitalising on Uncertainty: Exploring the Failure of International Law to Address the Risk Generated by the Proliferation of Space Debris
Authors: Seffinga Vincent 
Published: July 2024

Abstract
The increase in the number of space activities in recent decades has led to a concomitant increase in space debris in orbit around Earth. Space debris pose a risk not just for specific satellites, but also on a systemic level, as a collision cascade can result in the near-Earth orbits becoming unusable. In turn, this would entail a loss of the services currently provided through satellites. The international community has recognised this risk. Despite this, states are reluctant to negotiate and conclude international legal rules to address the proliferation of space debris. This article explores a root cause of this discrepancy. It argues that while law is typically seen as the regulator of uncertainty, international law’s regulation of outer space – under the interests of global capital investors – is directed by principles that support processes of commodification (i.e., the freedom of use), rather than principles that manage the risks associated with the proliferation of space debris as these would constrain (or are perceived to constrain) the expansion of capital (e.g., the precautionary principle). Therefore, international law – at the level of principles – is a co-producer of uncertainty. This conclusion is reached by exploring the proliferation of space debris through Ulrich Beck’s world risk society and by incorporating capital and economic power into his work. This inclusion reveals (i) that it is the accumulation of capital that generates risks and (ii) that capital exploits the socially constructed nature of risk to legitimise its expansion. International law – as both a regulator and co-producer of uncertainty – plays an essential role in legitimising these processes.
Effectiveness of an educational intervention on knowledge and practice of young midwifery college students about IUD and Pap smear, Babol, Iran
Authors: Adib-Rad Hajar , Ghaemi-Amiri Maryam , Gholamnia-Shirvani Zeinab , Pasha Hajar , Behmanesh Fereshteh , Omidvar Shabnam 
Published: July 2024

Abstract

Objectives
The high status of midwifery within the Millennium Development Goals (MDGs) is closely tied to enhancing clinical education. The purpose of this study was to review the effect of education on the knowledge and practice of midwifery students about Intrauterine Device (IUD) and Pap smears.

Methods
This quasi-experimental study was conducted over the course of four semesters, involving 128 bachelor of midwifery students. The sampling method was non-random, utilizing convenience sampling. Four consecutive 45 min weekly sessions were held, which included three theory sessions and one practical training session. Education was conducted in face-to-face training sessions using different methods such as lectures, question and answer, slide shows, educational films and brochures, and training participants with moulage. The data were gathered using a questionnaire covering demographic characteristics, various aspects of IUD and Pap smear knowledge, along with checklists for IUD insertion and Pap smear. Paired-samples T-test and multiple regression test were used to analyze the data. A significance level of p<0.05 was set for the analysis.

Results
The results of this study showed that there was a significant difference in the average knowledge across various aspects of IUD and Pap smear before and after the intervention (p<0.001). On multiple regression analysis, residence and income significantly influenced knowledge (β=0.313, p=0.001 and β=−0.384, p=0.001, respectively). Also, multiple regression analysis indicated that the use of IUD among family or friends and age significantly impacted practice (β=−0.450, p=0.005 and β=−0.206, p=0.030, respectively).

Conclusions
The educational intervention yielded a noticeable enhancement in the knowledge and practical skills of midwifery students. These students tend to achieve higher levels of success and deliver superior services to both patients and clients.
Current potential diagnostic biomarkers of amyotrophic lateral sclerosis
Authors: Xu Zheqi , Xu Renshi 
Published: July 2024

Abstract
Amyotrophic lateral sclerosis (ALS) currently lacks the useful diagnostic biomarkers. The current diagnosis of ALS is mainly depended on the clinical manifestations, which contributes to the diagnostic delay and be difficult to make the accurate diagnosis at the early stage of ALS, and hinders the clinical early therapeutics. The more and more pathogenesis of ALS are found at the last 30 years, including excitotoxicity, the oxidative stress, the mitochondrial dysfunction, neuroinflammation, the altered energy metabolism, the RNA misprocessing and the most recent neuroimaging findings. The findings of these pathogenesis bring the new clues for searching the diagnostic biomarkers of ALS. At present, a large number of relevant studies about the diagnostic biomarkers are underway. The ALS pathogenesis related to the diagnostic biomarkers might lessen the diagnostic reliance on the clinical manifestations. Among them, the cortical altered signatures of ALS patients derived from both structural and functional magnetic resonance imaging and the emerging proteomic biomarkers of neuronal loss and glial activation in the cerebrospinal fluid as well as the potential biomarkers in blood, serum, urine, and saliva are leading a new phase of biomarkers. Here, we reviewed these current potential diagnostic biomarkers of ALS.
A study in scarlet: cultural memory of the tropes related to the color red, female countenance, and onstage makeup in the Sinophone world
Authors: Bogushevskaya Victoria 
Published: July 2024

Abstract
In a high-context culture like Chinese, the linguistic code encompasses only part of the message and is incomplete without context. One of the implicit codes embedded in high-context communication is color tropes. Highly recognizable in the Sinophone world, color tropes often manifest themselves in the forms of metaphor, metonymy, allusions, and similes and are often related to the conveyance of emotional content. This paper provides a selection and discussion of such color tropes, demonstrates that color in a language inspires associations and connotations that are often very subtle and determined by deep cultural memory, and, giving several Chinese examples, shows how the primary semasiology of a color term often influences its subsequent semantic extension.
On the existence of simple waves for two-dimensional non-ideal magneto-hydrodynamics
Authors: Gaurav  , Singh Lal Pratap 
Published: July 2024

Abstract
In this article, a method called characteristic decomposition is used to show the presence of simple waves for the two-dimensional compressible flow in a non-ideal magneto-hydrodynamics system. Here, a steady and pseudo-steady state magneto-hydrodynamics system is considered, and we provide a characteristic decomposition of the flow equations in both systems. This decomposition ensures the presence of a simple wave adjacent to a region of constant state for the system under consideration. Further, this result is extended as an application of the characteristic decomposition in a pseudo-steady state, and we prove the existence of a simple wave in a full magneto-hydrodynamics system by taking the vorticity and the entropy to be constant along the pseudo-flow characteristics. These results extend the fundamental theorem proposed by Courant and Friedrichs for a reducible system (R. Courant and K. O. Friedrichs, Supersonic Flow and Shock Waves, New York, Interscience Publishers, Inc., 1948, p. 464). A motivational work was carried out for an ideal gas by Li et al. (“Simple waves and a characteristic decomposition of the two dimensional compressible Euler equations,” Commun. Math. Phys. Math. Phys., vol. 267, no. 1, pp. 1–12, 2006) and for a non-ideal gas by Zafar and Sharma (“Characteristic decomposition of compressible Euler equations for a non-ideal gas in two-dimensions,” J. Math. Phys., vol. 55, no. 9, pp. 093103–093112, 2014], [M. Zafar, “A note on characteristic decomposition for two-dimensional euler system in van der waals fluids,” Int. J. Non-Linear Mech., vol. 86, pp. 33–36, 2016].
Empowering communities through data literacy: a qualitative study exploring Indigenous Australian perceptions, engagement and understanding of data
Authors: Cook Becki , Corporal Stephen , Aleckson Jarryd , Blackman Renee , Kefford Glenn , Lovell David , Mengersen Kerrie 
Published: July 2024

Data literacy is an essential competency needed to use data to inform decisions and participate in contemporary society. Importantly, in the context of Indigenous health it enables engagement with health services and facilitates health management, Indigenous data sovereignty and Indigenous data governance. However, while Indigenous data sovereignty and Indigenous data governance are gaining momentum globally, there are no mechanisms for understanding or enhancing data literacy within Indigenous communities. To explore this, a research project was co-designed between the QUT Centre for Data Science and the Aboriginal and Torres Strait Islander Community Health Service Brisbane (ATSICHS), a community-controlled health service in Queensland Australia, to provide insights into the current state of data literacy, community perceptions of data, and identify community suggestions for enhancing data literacy. Furthermore, by utilizing an Indigenist research design, the project ensured Aboriginal and Torres Strait Islander Peoples’ ways of knowing, being, and doing were privileged and prominent throughout research design, data collection and analysis. The qualitative study included 20 semi-structured interviews with Brisbane Aboriginal and/or Torres Strait Islander Peoples who had accessed or engaged with ATSICHS. This paper presents insights into Aboriginal and Torres Strait Islander Peoples’ perspectives on data and data literacy, which may benefit community-controlled organizations and other Indigenous communities within Australia and around the world.
Optimization of polyethylene rotomolded tank design for storage of liquid mineral fertilizers by the Taguchi method
Authors: Tyukanko Vitaliy , Demyanenko Alexandr , Semenyuk Vladislav , Dyuryagina Antonina , Alyoshin Dmitriy , Brilkov Stanislav , Litvinov Sergey , Byzova Yulia 
Published: July 2024

In this research, by using the finite element method, the effect of five parameters (density of a liquid mineral fertilizer (ρ), its temperature (T), tank wall thickness (L), spacing of stiffeners (K) and stiffeners height (h)) on the strength of standard polyethylene rotomolded tanks used for storage of liquid mineral fertilizers (LMF) was studied. Using the Taguchi method, it was found that these parameters are ranked according to the degree of their influence (in decreasing order) on: maximum stresses (r>L>h>T>K), maximum stresses in the tank walls (r>L>K>T>h) and deformations of the tank (for DX/DY: r>L>h>T>K and for DZ: r>L>h>K>T). Validation of the FEM strength calculations was carried out, which showed satisfactory convergence of the calculated and experimental values. Generalized equations are derived that describe the effect of all five studied parameters on P, PW and tank deformations (along the X, Y and Z axes). On the basis of the derived equations, a nomogram has been constructed, which makes it possible to choose the optimal wall thickness that will correspond to the LMF density and storage temperature. Applying the optimal wall thickness ensures a guaranteed service life of at least 50 years, minimizing the risk of environmental accidents caused by tank failure and the release of LMF and associated toxic substances into groundwater. This research offers valuable insights for designing safer and more durable storage tanks for liquid mineral fertilizers. As an optimal design of the tank for storing the most common fertilizer UAN-32 (Urea Ammonium Nitrate, 32 % nitrogen), with a density of 1.32 g/cm3 and at storage temperatures up to 40 °C, the following values of structural parameters are recommended: L=10 mm, K=38 mm, and h=4 mm
Determining the influence of wheelset arrangement in the model 18-100 bogies on the level of steering efforts in the wheel-rail flange contacts
Authors: Zub Evgen , Tkachenko Viktor , Sapronova Svitlana , Syvakivskiy Serhii 
Published: July 2024

The object of this study is the process of directing the bogies of model 18-100 freight cars along a rail track, in particular, along curved sections of the track. The task to be solved was to determine the influence of wheelset arrangement on the level of steering forces in the flange contacts.
A calculation diagram and a mathematical model of fitting the bogie into the curved section of the track have been built. The bogie loading scheme by external forces, including lateral rocking forces acting on the car in a curve, has been refined. In this case, the method of pseudo-statics of the mechanical system, which is a system of nonlinear algebraic equations, was applied. The calculation module Given-Find in the Mathcad software package (USA) was used to solve the mathematical model.
It was established that the misalignment of wheelsets in the frames of model 18-100 bogies was of an accumulative nature. At the maximum operating angles of misalignment of wheelsets, the lateral steering forces in the flange contacts increase by 40–60 % compared to the rated setting. These angles can be up to 0.015 rad (0.85 degrees).
The field of practical application of the results is railroad transportation, in particular, the system of maintenance and repair of freight cars on bogies of the 18-100 model. At the same time, the condition for the practical application of the research results is the expediency of introducing into the maintenance system the technological operation of controlling the deviation of wheelset arrangement in the bogie relative to the rated one.
The current study will contribute to the construction of a measuring system for monitoring the deviation of wheelset arrangement in the bogie relative to the rated one. This proves the expediency of introducing into the trolley maintenance system the technological operation of controlling the deviation of wheelsets and designing a device for monitoring this parameter
Heat flow density measurement during non-destructive testing
Authors: Karabekova Dana , Kissabekova Perizat , Khassenov Ayanbergen , Kucheruk Volodymyr , Kudussov Arystan 
Published: July 2024

The object of the study is the development of a device capable of accurately and reliably measuring heat flux density in various environments. The development of a heat flux density meter designed for non-destructive analysis of thermal processes in various fields of application is presented.
The developed device is intended for evaluating the thermal insulation condition of underground pipelines. The functionality of the heat flow device relies on comparing standard temperature values with experimental ones measured on the soil surface. To ensure accurate and reliable measurement of heat flux density, the basis is a thermoelectric battery converter, which uses the auxiliary wall method. The heat flow density measuring device is constructed in the shape of a restricted cylinder, with one base serving as the working surface, while the second base establishes thermal contact with the body at ambient temperature. Embedded heaters enable the generation of heat flow through the thermoelectric sensor in directions perpendicular to its base. For calibrating the heat flux device, experiments were conducted using a standard copper-constantan calibration table. Temperature increments were determined from thermo electromotive force, and tests were performed on an existing heating network. The conducted measurements validate the fundamental feasibility of employing the proposed device for implementing the non-destructive thermal testing method on underground heating mains.
The results of the experiment can be used not only for research, but also for monitoring and regulating processes in various fields of science and technology. The developed heat flux meter promises a significant contribution to the development of modern methods for analyzing thermal processes.
The dimensions of the thermoelectric battery converter are also determined and the coefficient (kq) should be in the range from 4.0 to 12.0 W/(m2⋅mV), and the electrical resistance should be in the range of 12–20 kOhm
Determining patterns of leaching titanium(IV) from the Irshansky deposit ilmenite
Authors: Pysarenko Snizhana , Kaminskyi Oleksandr , Denysiuk Roman , Yevdochenko Olena , Chyhyrynets Olena , Anichkina Olena , Avdieieva Olga , Lysetska Yuliia 
Published: July 2024

The research object is the ilmenite concentrate from the Irshansky deposit. This study describes an elemental composition of the mineral raw material and confirms its structure using the X-ray diffraction and scanning electron microscopy. Experimental studies have shown that the ilmenite concentrate from the Irshansky deposit has a significant titanium content in terms of titanium dioxide (79 %). Mineral raw materials with such a chemical composition are unique, so there is a need to find alternative methods for its processing. The research demonstrates that the maximum degree of extraction in the process of alkaline leaching of the ilmenite concentrate is achieved under the condition that the average diameter of particles of the mineral raw material should be ≤71 μm. As a result of temperature studies, it has been found that a temperature of 453 K would suffice to obtain potassium titanate at atmospheric pressure. Further temperature increase does not provide for a significant increase in the degree of titanium extraction, and also contributes to the formation of polytitanates of various compositions. The study of the influence of the molar ratio of the starting reagents on the degree of extraction of titanium(IV) from the ilmenite concentrate has showed that the optimal molar ratio between the components corresponds to the stoichiometric one and is 1:2. Increasing the amount of potassium hydroxide in the reaction mixture is impractical as it reduces the yield of potassium titanate, and the final product will have high alkalinity due to excess alkali. The optimal time for alkaline leaching is three hours of continuous heating in a glycerin bath. A further increase in the duration of heating does not lead to an increase in the degree of extraction, which is associated with the diffusion of alkali from the surface of the nucleus into the volume of ilmenite particles due to the formed products of interaction and annihilation of the initial nuclei
Assessing the stability of protective structures in preparatory mining workings under conditions of static load
Authors: Chepiga Daria , Podkopaiev Serhii , Kayun Oleksiy , Bielikov Anatolii , Podkopayev Yevgen , Kipko Oleksandr , Pidhurna Olha 
Published: July 2024

The object of this study is the deformation processes in protective structures under the action of static load in the coal massif in order to preserve the integrity of the side rocks and the operational condition of mine workings. Under laboratory conditions, the deformation characteristics of rigid and flexible protective structures, as well as supports made of crushed rock, were studied on experimental samples. The samples were subjected to uniaxial compression. It was established that there is a functional relationship between the coefficient of transverse deformation ν and the relative change in the volume δV of protection structures, which makes it possible to estimate their bearing capacity. For rigid protection structures (coal pillars, cast strip, cement blocks, blocks of reinforced concrete bollards, bundles of wooden racks), the deformed state of the structures determines their behavior. This happens at values of ν=0.3–0.5 and δV£0.09. Their stability is fixed within the safe deformation resource. An increase in the deformation energy density of such structures beyond the safe deformation resource leads to their destruction due to a change in shape. For flexible protection structures (bundles of wooden racks, rolling bundles made of wooden sleepers), which have a transverse deformation coefficient ν=0.02, at a relative change in volume δV£0.3, the compaction of structures is observed. Increasing their stiffness allows limiting the convergence of side rocks.
For a support made of crushed rock, at ν=0.25–0.32 and a relative volume change of 0.12£δV£0.32, its compaction and increase in resistance occur. Under such conditions, the convergence of side rocks is limited. In order to preserve the integrity of the lateral and operational condition of preparatory workings in the excavation areas of coal mines, it is advisable to use flexible protective structures made of wood or supports made of crushed rock