bluuebunny/crossref_metadata_2025 huggingface dataset:
Quantization Conductance of InSb Quantum-Well Two-Dimensional Electron Gas Using Novel Spilt Gate Structures
Authors: Jubair Shawkat Ismael , Eldieb Asheraf , Salem Ghassan , Karomi Ivan Bahnam , Buckle Phil
Published: July 2024

Electron transport behaviour in InSb semiconductor significantly changes when the conduction is restricted to two-dimensions. Semiconductor materials are an effective tools to characterize the electron transport in this aspect because the energy separation between transverse modes in a low-dimensional semiconductor device are always inversely proportional to the effective mass, in the same way as for sub-bands in a parabolic potential. Therefore, in this article, a range of novel device geometries were designed, fabricated and characterized to investigate ballistic transport of electrons in low-dimensional InSb structures using surface gated devices to restrict the degrees of freedom (dimensionality) of the active conducting channel. In this framework, designs of gates (i.e., line, loop and solid discussed later) have been used over a range of gate dimensions. Consistent measurement of quantised conductance would be promising for both low power electronics and low temperature transport physics where split gates are typically used for charge sensing. This article presents an experimental results of quantization conductance obtained for the range geometries of novel gates, and some model consideration of the implications of the material choice. Furthermore, the etching techniques (wet and dry) exhibited a significant decrease of ohmic contact resistance from around 35kΩ to only roughly 250Ω at room temperature. Interestingly a possible 0.7 anomaly conduction was observed with a loop gate structure. This work showed perfectly that the two-dimensional electron gases can be formed in narrow gap InSb QWs which makes this configuration device promising candidate for topological quantum computing and next generation integrated circuit applications. Keywords: Quantization conductance, InSb QW, 2DEG, spilt gate structure, ballistic transport.
Cold Forging and Annealing of Wire Arc Additively Manufactured AISI 308LSi Stainless Steel
Authors: Bankong Bankong Daniel , Ogundipe Oluwafemi Joshua , Abioye Taiwo Ebenezer , Ogedengbe Tunde Isaac , Zuhailawati Hussaini , Adamolekun Taiwo Mike , Osasona Amos Babatunde , Hassan Muhammad Hafiz
Published: July 2024

Wire arc additive manufacturing (WAAM) has gained significant attention in recent years as a cost-effective and efficient method for fabricating complex geometries. This study investigates the effects of cold forging and annealing on mechanical properties of AISI 308LSi wall fabricated using an automatically controlled gas metal arc welding on a CNC machine. The multilayer WAAM wall manufactured at an optimized parameters was first machined to a fairly smooth surface. Thereafter, the wall samples were differently subjected to annealing at 930°C and cold forging processes to improve the mechanical properties. Microstructural characterization of the post-processed and as-deposited samples were performed using optical and scanning electron microscopy while the tensile and hardness properties were investigated using Instron universal testing machine and Vickers hardness tester respectively. Annealing process was found to improve the tensile properties while the cold forging improved hardness of the deposited WAAM wall. These findings offer valuable insights into optimizing post-processing techniques for WAAM parts, especially 308LSi stainless steel and contribute to the advancement of this technology for industrial applications.
Experimental Evaluation of Unpreprocessed-Expired Paracetamol Drugs as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid
Authors: Michael Omokafe Seun , Aduloju Esther Oluwafunmike , Arakaseun Thompson
Published: July 2024

The widespread corrosion of critical oil and gas infrastructure requires development of innovative and environmentally sustainable solutions. This research considers the repurposing of hitherto un-useful expired drugs to meet this challenge and to do so in ways that also puts stop to the menacing and illegal circulation of expired pharmaceuticals in developing economies. The corrosion inhibitory potential of expired paracetamol was evaluated for mild steel in acidic environment. Electrochemical analysis revealed that the corrosion current decreased from for the mild steel immersed in the blank/uninhibited 0.5M HCl environment to in the case of the sample in the 8g/l environment. The concentration of dissolved ions of iron in the acidic environment also followed this trend supported by the results obtained from the gravimetric analysis. Optical microscopy showed gradual covering of the corroding surface by a layer of inhibitor film with increasing concentration of the additive in the acidic environment. The corrosion inhibition efficiency increased with increasing concentration of the expired drug, reaching a maximum of 73.24% for 8.0 mM of expired paracetamol directly dissolved in the acid. Expired paracetamol acted as a mixed-type inhibitor for mild steel in 0.5M HCl and the corrosion inhibition process was spontaneous. All analyses agreed that expired paracetamol drug is capable of inhibiting corrosion of mild steel in HCl and that the corrosion inhibition is achievable without prior pretreatment. The research is fundamental as it attempts to lay some groundwork for further research towards developing viable and marketable product from this category of materials.
Contingency Approach for Static Security Assessment on the Nigerian 330 Kv Electric Power Transmission Grid
Authors: Sobayo Abiodun Sulaimon , Adejumobi Oluwaseun Ibrahim , Adebisi Isaiah Adediji , Adams Daniel Oluwasegun
Published: July 2024

Static security is the property of power system to maintain steady or stable operating state when contingencies such as line outages or component failures occur to avoid economic and technical losses. This study assessed the static security of the Nigerian 330 kV, 30-bus electric power transmission grid using a contingency approach. The steady state performance of the power system was modelled using Newton-Raphson based load flow equations and simulated in ETAP software environment. Bus voltage and line loading violations were determined by observing the voltage profile and line flows compliance with the voltage statutory limit of 0.95 to 1.05 p.u. and 80% loading of the thermal (MVA) limit respectively. N-1 contingency evaluation was conducted on fifty lines of the considered network. Performance index (PI) of the outage lines was determined and used to rank each of the contingency cases. Load flow analysis revealed that New – Haven, Onitsha, Gombe, Jos, Kano and Calabar with voltage magnitudes of 0.9003, 0.9468, 0.6608, 0.8141, 0.8138 and 0.9319 p.u. respectively violated the voltage statutory limit while Okapi-Calabar and Alaoji-Calabar with loading of 101.6 and 84.19 % respectively exceeded the recommended 80% loading of the MVA limit. The system total active line loss was 218.08 MW. Contingency analysis results ranked Benin-Onitsha and Ikeja West-Aiyede having the PI of 80.73 and 3.56 as the most and least critical lines respectively. This study established the suitability of contingency method for the assessment of security of a large-scale network such as the Nigerian electricity grid.
Continuous Remediation of Congo Red Dye Using Polyurethane-Polyaniline Nano-Composite Foam: Experiment and Optimization Study
Authors: Ibrahim Abubakar , Nour Eldemerdash Usama , Yoshitake Tsuyoshi , Khair-Eldeen Wael , Elkady Marwa
Published: July 2024

This study employed an innovative approach, utilizing prepared dried polyurethane-polyaniline nano-composite, through in-situ polymerization, for continuous remediation of Congo red dye. Response Surface Methodology (RSM) based on the Box-Behnken design (BBD) model was utilized to optimize the processing parameters, including initial dye concentration, flow rate, and pH. The two-factor interaction (2FI) model emerged as the most significant, highlighting the influence of individual and interaction effects of the factors. Optimization of the dye remediation process yielded the optimal conditions of a flow rate of 10 mL/min, acidic pH of 5.00, and dye concentration of 20 mg/L, resulting in an impressive, predicted removal efficiency of 99.09% agreeing with the experimental value. Moreover, the maximum adsorption capacity was determined to be 329.68 mg/g. Characterization of the adsorbent material involved techniques such as Scanning electron microscopy (SEM), Fourier transforms infrared spectra (FTIR), X-ray spectroscopy (XRD), and Zeta potential analysis. This material offers a sustainable alternative in industries to treat Congo red dye before being disposed of into the environment.
Persistent cool extremities as an independent predictor of adverse clinical outcomes among critically ill patients: a single-center retrospective observational study
Authors: Uchida Masatoshi , Kikuchi Migaku , Hoshiyama Eisei , Wake Koji
Published: July 2024

Cool extremities representing impaired skin perfusion are a classical sign of shock. We evaluated associations between the presence and persistence of subjective cool extremities observed by caring nurses and clinical outcomes. We conducted a retrospective observational study in an Intensive Care Unit (ICU) at a university hospital in Japan. Patients were divided into two groups based on the presence or absence of subjective cool extremities during the first 24 hours of their ICU stay. We compared their characteristics and outcomes. In total, 2956 patients were analyzed. Patients with cool extremities were older, had higher severity Acute Physiology and Chronic Health Evaluation (APACHE III) scores, had higher in-hospital mortality (4.1% vs 18%, p<0.001), and had a higher prevalence of acute kidney injury requiring renal replacement therapy (2.1% vs 10%, p<0.001) as compared to patients without nurse-reported cool extremities. Multivariable logistic regression showed cool extremities persisting for ≥12 hours were significantly associated with in-hospital death (adjusted Odds Ratio, OR, 1.64) and acute kidney injury requiring renal replacement therapy (adjusted OR 1.82). Patients with subjective cool extremities were more severely ill and had poorer outcomes. Subjective skin temperature assessment may be useful to detect high-risk patients.
Evaluation of the Results of Botulinum Toxin Injection in Children with Cerebral Palsy Aged between 2 and 15 years, using Two Techniques: Electrostimulation and Ultrasound
Authors: Aitziane Sarrah , Belabbassi Hanène , Bouamra Abderrezak , Imouloudene Amina , Kaced Houria
Published: July 2024

Objective:

The objective of our study is to compare ultrasound and electrostimulator guidance for the injection of diluted botulinum neurotoxin Type A.

Materials and Methods:

Eighty-six children were injected under a pacemaker and 94 under ultrasound. The injection involved the muscles of the lower limbs in 180 children aged between 2 and 15 years. Assessment was by the Modified Ashworth Scale, lower-limb range of motion, and Gross Motor Function Classification System (GMFCS) for function, as well as procedural pain.

Results:

The analysis does not find any difference between the two techniques concerning spasticity, functional evolution according to the GMFCS, and articular amplitudes, with the exception of the popliteal angle of the right knee with an estimated P = 0.01 for the group injected under ultrasound. Interventional pain between the two groups found a significant difference (P = 0.04) in favor of ultrasound identification.

Conclusion:

The stimulator had the same results as ultrasound on the orthopedic level of spasticity as well as on gross motor function. Nevertheless, ultrasound tracking remains more comfortable and less painful than stimulator tracking.
A Rare Case Report of Constriction Band Syndrome at the Wrist in a Child (Dhaga Syndrome)
Authors: Lahel Ranjit Singh , Tiwari Chandan , Pradeep
Published: July 2024

ABSTRACT

There are instances when elastic/thread bands are worn on the wrist, especially in infants or children in certain communities for either decorative or religious purposes. In case, it is worn for a long time, it burrows through the skin and soft tissues while going completely un-noticed, causing constriction and resulting in distal edema and loco-regional infection. The rare case discussed here is of a 3 years old female child who presented with circumferential constriction, swelling, and discharging sinuses around the right wrist for 7 months. The case was diagnosed on MRI and subsequently successfully managed surgically. The clinico-radiologic features and details of the case are discussed herein.
Second order perturbation theory of two-scale systems in fluid dynamics
Authors: Debussche Arnaud , Pappalettera Umberto
Published: July 2024

In the present paper we study fast-slow systems of coupled equations from fluid dynamics, where the fast component is perturbed by additive noise. We prove that, under a suitable limit of infinite separation of scales, the slow component of the system converges in law to a solution of the initial equation perturbed by transport noise, and subject to the influence of an additional Itô–Stokes drift. The resulting limit equation is very similar to turbulent models derived heuristically. Our results apply to the Navier–Stokes equations in dimensions

d=2,3

; the surface quasi-geostrophic equations in dimension

d=2

; and the primitive equations in dimensions

d=2,3

.
The Batyrev–Manin conjecture for DM stacks
Authors: Darda Ratko , Yasuda Takehiko
Published: July 2024

We define a new height function on rational points of a DM (Deligne–Mumford) stack over a number field. This generalizes a generalized discriminant of Ellenberg–Venkatesh, the height function recently introduced by Ellenberg–Satriano–Zureick-Brown (as far as DM stacks over number fields are concerned), and the quasi-toric height function on weighted projective stacks by Darda. Generalizing the Manin conjecture and the more general Batyrev–Manin conjecture, we formulate a few conjectures on the asymptotic behavior of the number of rational points of a DM stack with bounded height. To formulate the Batyrev–Manin conjecture for DM stacks, we introduce the orbifold versions of the so-called

a

- and

b

-invariants. When applied to the classifying stack of a finite group, these conjectures specialize to Malle’s conjecture, except that we remove certain thin subsets from counting. More precisely, we remove breaking thin subsets, which have been studied in the case of varieties by people including Hassett, Tschinkel, Tanimoto, Lehmann and Sengupta, and can be generalized to DM stack thanks to our generalization of

a

- and

b

-invariants. The notion of breaking thin subset enables us to reinterpret Klüners’ counterexample to Malle’s conjecture.
Sur les actions de $\mathrm{PSL}_{2}(\mathbb{Z}/p\mathbb{Z})$ sur $p$ éléments dans la lettre de Galois à Chevalier
Authors: Chenevier Gaëtan
Published: July 2024

Dans cette note d’exposition, nous revenons sur la classification des actions exceptionnelles de

\mathrm{PSL}_{2}(\mathbb{Z}/p\mathbb{Z})

sur un ensemble à

p

éléments, annoncée par Galois dans sa dernière lettre à Chevalier.
New Challenges in the Interplay between Finance and Insurance
Authors: Acciaio Beatrice , Albrecher Hansjörg , Biagini Francesca , Schmidt Thorsten
Published: July 2024

The aim of this workshop was to convene experts for fostering the discussion and the development of innovative approaches in insurance and financial mathematics. New challenges like price instability, huge insurance claims and climate change are affecting the markets, while at the same time the possibility of using large volumes of data and continuously increasing computer power as well as recently developed mathematical methods offer new opportunities for modelling and risk assessment. Here we present an overview of these recent developments by providing the abstracts of the talks that were given during the week, together with a brief summary of the covered topics.
Mini-Workshop: Mathematics of Many-body Fermionic Systems
Authors: Leopold Nikolai , Nam Phan Thành , Saffirio Chiara
Published: July 2024

Fermionic quantum systems are well described by the linear many-body Schrödinger equation. For interacting systems the full Schrödinger theory is extremely complicated and theoretical as well numerical investigations are not feasible. In practice, macroscopic properties of large systems can therefore only be accessed by means of approximate theories. The intention of this workshop was to showcase the most recent advances in the mathematical study of many-body interacting fermionic systems and to stimulate discussions among different research groups.
Control Methods in Hyperbolic PDEs
Authors: Ancona Fabio , Anvari Bani , Glass Olivier , Herty Michael
Published: July 2024

Control of hyperbolic partial differential equations (PDEs) is a truly interdisciplinary area of research in applied mathematics nurtured by challenging problems arising in most modern applications ranging from road traffic, gas pipeline management, blood circulation, to opinion dynamics and socio-economical models, as well as in environmental and biological issues, or more recently in the analysis of deep learning and machine learning methods. The topic has gained an increasing attraction of researchers in the last twenty years due to fundamental theoretical as well as numerical advances achieved in the field of nonlinear hyperbolic PDEs. The hyperbolic and the control of PDEs communities, while pursuing separate interests in their respective range of action with a different focus and, often, with a different array of technical tools, do share a substantial body of common knowledge and background. We think the time is right and the momentum is propitious to bring those communities together at a joint workshop, to mutually stimulate each other and inter- act with one another, for a marked advancement of this area of research on a broad spectrum of control ranging from theoretical to numerical problems and covering also the emerging challenges involving the interplay between (topics of) control and learning. In order to also attract young scientists to this striving field we focus on selected lectures, in-depth discussions, transfer of information from senior to young researchers, and vice versa, and invited plenary talks.
Geometric, Algebraic and Topological Combinatorics
Authors: Kalai Gil , Novik Isabella , Santos Francisco , Welker Volkmar
Published: July 2024

The 2023 Oberwolfach meeting “Geometric, Algebraic, and Topological Combinatorics” was organized by Gil Kalai (Jerusalem), Isabella Novik (Seattle), Francisco Santos (Santander), and Volkmar Welker (Marburg). It covered a wide variety of aspects of Discrete Geometry, Algebraic Combinatorics with geometric flavor, and Topological Combinatorics. Some of the highlights of the conference were (1) Federico Ardila and Tom Braden discussed recent exciting developments in the intersection theory of matroids; (2) Stavros Papadakis and Vasiliki Petrotou presented their proof of the Lefschetz property for spheres, and, more generally, for pseudomanifolds and cycles (this second part is joint with Karim Adiprasito); (3) Gaku Liu reported on his joint work with Spencer Backman that establishes the existence of a regular unimodular triangulation of an arbitrary matroid base polytope.
Literatura a religia. Tradycje polskiej i bułgarskiej humanistyki w perspektywie kulturowej konfrontacji
Authors: Drzewiecka Ewelina
Published: July 2024

Artykuł podejmuje kwestię różnic w sposobach rozumienia i interpretowania problematyki „literatura a religia” w humanistyce. Przedmiotem uwagi jest literaturoznawstwo polskie i bułgarskie jako zupełnie odmienne pod względem uwarunkowań społeczno-kulturowych, politycznych i wyznaniowych. Analiza prowadzona jest w perspektywie postsekularnej i służy wskazaniu na możliwe kryptoteologiczne ramy dla założeń i praktyk typowych dla polskiego i bułgarskiego pola naukowego. Celem jest naświetlenie kontekstów kulturowych, wa- runkujących lokalne specyfiki, a także wskazanie na możliwości wykorzystania tychże na potrzeby ożywczego samozdystansowania dyscyplin(y).
Koszmar menedżera? Wstępne uwagi dotyczące możliwości zarządzania fandomami
Authors: Kosińska Olga
Published: July 2024

Management more and more often turns to the organization as the subjects of its activities in their functional aspect, not the material one. One of such spaces are virtual communities, including fandoms. However, the achievements of fan studies dealing with them have relatively rarely appeared in management sciences so far. In order to determine the state of scientific considerations related to the management of fandoms, a study of the available literature was carried out, covering the leading scientific journals from the list prepared by the Polish Ministry of Education and Science in the field of management sciences, as well as cultural and religious studies, which deal with topics related to management, and thirdly from the Scopus database. Therefore, the article is of a review nature and its main purpose is to indicate the research gap for the issue of fandom management. Therefore, it constitutes a preliminary diagnosis of the current state of research and seeks an answer to the question: does the issue of fandom management appear in the researched scientific journals? The answer to this question remains essentially negative – although some of the topics discussed in the journals are related to the selected issue, the leading titles included in the list of the Ministry of Education and Science so far lack a comprehensive analysis of it. They appear in journals indexed in the Scopus database and in other publications (e.g. monographs). This situation means a specific lack of systemic support for the entry of texts dealing with fandom management into the mainstream of Polish scientific research.
„Sternicy mediów”. Opis projektu, kwestie metodologiczne
Authors: Nierenberg Bogusław , Bogdanov Dušan
Published: July 2024

This article describes the “Media Helmsmen” research project, which primary goal was the analysis of the influence of leaders of media organizations on shaping the media market in Poland after 1989. The project began in 2013 during the “Humanistic Management” conference at Jagiellonian University, and was inspired by the idea presented by the late professor Barbara Czarniawska. Even though professor Czarniawska did not conduct her study in Sweden as it was planned, in Poland extensive research material was collected. It allowed the identification of key dilemmas in organizational management media organizations. The article presents the basic research assumptions of the project, including the main research questions: how is the leadership viewed in relation to media organizations? Who exactly is the media helmsman? What are its features? The authors point to the multi-paradigmatic nature of management sciences and emphasize the importance of both theoretical and practical aspects of research. The article includes a brief description of the research process, which is presented in detail in the monograph titled “Media Helmsmen”.
Vaskularna flora Jakuševca (Novi Zagreb)
Authors: Bekavac Ana , Eršegović Antonio , Rumin Paola , Šegota Vedran
Published: July 2024

Kroz 2023. godinu provedeno je istraživanje vaskularne flore područja Jakuševec koje pripada gradskoj četvrti Novi Zagreb – istok. Na području istraživanja zabilježeno je 239 vaskularnih biljnih svojti te osam vrsta mahovina. Najzastupljenije porodice bile su Poaceae, Asteraceae, Fabaceae, Rosaceae i Cichoriaceae. Najčešći životni oblici bili su hemikriptofiti i terofiti, a najviše zabilježenih svojti pripada euroazijskom flornom elementu i kozmopolitima. Zabilježena je vrsta Equisetum hyemale koja je prema IUCN kriterijima ugroženosti osjetljiva (VU). Vrste Anacamptis pyramidalis, Cephalanthera damasonium, Dianthus barbatus i Equisetum hyemale strogo su zaštićene. Zabilježeno je i 17 invazivnih vrsta od kojih najviše (6) iz porodice Asteraceae.
Coalgebraic Satisfiability Checking for Arithmetic $\mu$-Calculi
Authors: Hausmann Daniel , Schröder Lutz
Published: July 2024

The coalgebraic $\mu$-calculus provides a generic semantic framework for
fixpoint logics over systems whose branching type goes beyond the standard
relational setup, e.g. probabilistic, weighted, or game-based. Previous work on
the coalgebraic $\mu$-calculus includes an exponential-time upper bound on
satisfiability checking, which however relies on the availability of tableau
rules for the next-step modalities that are sufficiently well-behaved in a
formally defined sense; in particular, rule matches need to be representable by
polynomial-sized codes, and the sequent duals of the rules need to absorb cut.
While such rule sets have been identified for some important cases, they are
not known to exist in all cases of interest, in particular ones involving
either integer weights as in the graded $\mu$-calculus, or real-valued weights
in combination with non-linear arithmetic. In the present work, we prove the
same upper complexity bound under more general assumptions, specifically
regarding the complexity of the (much simpler) satisfiability problem for the
underlying one-step logic, roughly described as the nesting-free next-step
fragment of the logic. The bound is realized by a generic global caching
algorithm that supports on-the-fly satisfiability checking. Notably, our
approach directly accommodates unguarded formulae, and thus avoids use of the
guardedness transformation. Example applications include new exponential-time
upper bounds for satisfiability checking in an extension of the graded
$\mu$-calculus with polynomial inequalities (including positive Presburger
arithmetic), as well as an extension of the (two-valued) probabilistic
$\mu$-calculus with polynomial inequalities.
Implementation of Youth for Environment in School Organization (YES-O) in the Secondary Schools and Its Impact on Science Learning Progress
Authors: Saldana Joy B , Domanog Joseph Vincent T
Published: July 2024

The deliberate attempt to prevent the environment from being completely destroyed has gained attention. Schools are recognized as a vital platform for implementing environmental education. Accordingly, the Youth for Environmental in School Organization (YES-O) stands out as the only recognized implemented environmental co-curricular organization in basic education. Hence, this study evaluated the implementation of the Youth for Environmental in School Organization (YES-O) programs and its impact to the students’ science learning progress in the secondary schools in Oquendo 3 District, Schools Division of Calbayog City, Philippines. The study revealed that YES-O successfully implemented its mandated programs. These programs included seed banks and nurseries, the collection of seeds and seedlings from native and endemic species, emphasis on tree planting and care, implementation of water conservation initiatives, promotion of power supply programs, organization of clean-up drives, and implementation of ecological solid waste management programs. Similarly, YES-O programs had a high impact on students' science learning progress, particularly in terms of their pro-environmental behavior and science performance. There was a strong positive relationship between the implementation of YES-O programs and its impact on students' science learning progress. The study promoted creativity in environmental education and positioned YES-O as an effective organization that inspired students to become genuine stewards of the environment thereby contributing to a sustainable future.
Community-Based School Management Model Development in The Digital Era
Authors: Andari Shelly , Roesminingsih Erny , Trihantoyo Syunu
Published: July 2024

This research is research that aims to develop a Community-Based School Management Model in the Digital Age. This study aims to develop a community participation model in education involving people or groups both at the implementation planning, evaluation, utilization of results, accountability and development in the education sector. In management science, the term participation is defined as a process of mental and emotional involvement in an activity. This study used research and development method to develop a well-adapted model to be integrated in primary schools for Indonesian context. A special model is needed in community-based school management to face challenges in the digital era. This model answers the gaps that occur related to school needs and community involvement in it as an effort to improve the quality of education, focusing on social demands to education output and outcome. Previously, it can be inferred from some studies that community-based management were not integrated optimally while stakeholders perceived school as a formal institutions rather than an important institution for culture, economics, knowledge to be developed. The newest model of school management was integrated on SDS Plus Al-Qodiri. It resulted on the Community-Based School Management Model in the Digital Age can be used as a guide for schools, not only partner schools but other schools with the same focus, to continue to adapt and respond to current challenges, especially in involving the community in the advancement of education.
Metales pesados en el agua. Contaminación por actividad minera y reducción de plomo y zinc en río
Authors: Huaman Cerna Fabian Alexander , Otoya Zelada Antonio Manuel , Evangelista Benites Guillermo David , Aguilar Rojas Percy Danilo , Díaz Díaz Natalia Del Pilar
Published: July 2024

El agua es esencial para los seres humanos, ya que juega un papel crucial en los procesos orgánicos como la digestión de los alimentos, la absorción de nutrientes y la eliminación de desechos. En Perú, la mayoría de la población no puede acceder a tratamientos para mejorar la calidad del agua en áreas cercanas a sus comunidades, como el río Moche. En esta región, se han identificado niveles elevados de metales pesados debido a la actividad minera y otras acciones humanas. El propósito de este libro fue analizar el proceso de quelación utilizando EDTA y citrato de magnesio como agentes quelantes en las aguas del río Moche, en la ciudad de Trujillo, centrándose en los metales pesados plomo y zinc.
GEODETIC MONITORING OF LARGE DAMS – CHARACTERISTICS AND SIGNIFICANCE
Authors:   EPS AD, Serbia, Nestorović Žarko , Trifković Milan ,   University of Novi Sad, Faculty of Civil Engineering Subotica, Serbia, Kuburić Miroslav ,   University of Novi Sad, Faculty of Civil Engineering Subotica, Serbia
Published: July 2024

Geodetic monitoring of large dams is used to determine the absolute displacements of large dams relative to a set of geodetic network points, which can be considered stable over a long period of time. The expected period of stability of the set of geodetic points from which the monitoring is conducted should not be shorter than the service life of the structure. This fact, along with the required accuracy and the minimum detectable displacement of the points representing the large dam, highlights the complexity of the issue of geodetic monitoring of large dams. This paper presents some characteristics of geodetic monitoring of large dams.
MORTARS FOR SUSTAINABLE CONSTRUCTION
Authors: Stefanovska Irina , Jancev Dime , Stamatovska Aluloska Nikolina , Ancev Ane , Jovanov Vojo ,   “Ss.Cyril and Methodius” University in Skopje, Faculty of Technology and Metallurgy, Republic of N.Macedonia, Arangelovski Toni ,   “Ss.Cyril and Methodius” University in Skopje, Faculty of Civil Engineering, Republic of N.Macedonia, Fidanchevski Emilija ,   “Ss.Cyril and Methodius” University in Skopje, Faculty of Technology and Metallurgy, Republic of N.Macedonia
Published: July 2024

In recent years, many efforts have been made to decrease cement-based products’ carbon footprint and protect the environment. In this study, cement was partially replaced with 16wt.% mechanically activated fly ash (MAFA). In addition, crystalline admixture (CA) was added to cement mortar, and the effect of MAFA and CA on the fresh mortar properties, mechanical properties, and self-healing was investigated. After 28 days of curing, the mortar with 16 wt.% MAFA has enhanced compressive strength (4.4%) and healing efficiency up to 37% compared to the reference mortar. Replacing cement with fly ash as a by-product from thermal power plants supports the circularity of industrial wastes and resource efficiency thus protecting the environment, but also influences the decrease of CO2 emissions.
REHABILITATION OF THE PEDESTRIAN AND ROAD BRIDGE IN ZRENJANIN
Authors:   University of Belgrade, Faculty of Civil Engineering, Serbia, Carević Vedran , Stevanović Boško ,   University of Belgrade, Faculty of Civil Engineering, Serbia
Published: July 2024

This paper describes the proposed rehabilitation measures for two bridges in Zrenjanin whose function is endangered. The Rehabilitation Project was preceded by a General Inspection of 16 bridges on the territory of the city of Zrenjanin by an expert team from the Faculty of Civil Engineering at the University of Belgrade. Based on the main inspection, it was concluded that the Pedestrian bridge over "Jezero I" and the road bridge over the DTD canal in the village of Jankov Most require rehabilitation intervention in order to enable further exploitation. The rehabilitation project of both bridges was carried out by the Faculty of Civil Engineering of the University of Belgrade in March 2024. The paper presents the damage, its cause and the proposal for rehabilitation works.
Optimalisasi Desain Pembelajaran PAI Kelas XI SMA Pelita Raya Jambi
Authors: Munandar Aris , Novriana Rahmadea , Arda Anisa , Ramadhani Fitria , Safna Indo , Rohimah Tsaniyah Zahroh
Published: July 2024

There are many problematic facts about students in the learning process. Teachers or teaching staff also tend to be less than optimal in developing teaching methods and media used in delivering learning resources. This has an impact on the aim of this research is to understand student problems, student learning styles and Islamic boarding school learning methods for class XI at Pelita Raya Jambi private high school. The method used in this research is a qualitative method, specifically case study. The number of informants taken was 31 people. Data collection tools for this research are descriptive questionnaires, observations, interviews and literature studies. The research results show that the teacher's learning methods do not match the students' learning styles. Teachers apply monotonous learning methods, tend to lecture in one direction and experience difficulties in teaching. Meanwhile, 55% of students have a visual learning style, 16% kinesthetic and 29% auditory. This has an impact on 60% of students in the class having difficulty focusing on the material because they are sleepy, bored and more interested in paying attention to their respective gadgets rather than paying attention to the material being explained. Therefore, to optimize learning designs in the future, teachers need this research to serve as a basis for transforming learning designs.
Pancreatoduodenectomia em paciente com doença de Von Hippel-lindau - revisão da literatura
Authors: Bueno Sabryna Castro Bernardes , Farias João Pedro de Oliveira , Nunes Pedro Morais
Published: July 2024

A pancreatoduodenectomia, também conhecida como procedimento de Whipple, é uma cirurgia complexa destinada à remoção de tumores do pâncreas, duodeno e estruturas adjacentes. A doença de Von Hippel-Lindau (VHL) é uma condição genética rara que resulta na formação de tumores e cistos em diversas partes do corpo, incluindo o pâncreas. Muitos pacientes com VHL desenvolvem tumores neuroendócrinos pancreáticos, que podem necessitar de uma pancreatoduodenectomia. Este estudo apresenta o contexto clínico, o procedimento cirúrgico, os cuidados pré-operatórios e pós-operatórios, as possíveis complicações e o prognóstico para pacientes com VHL submetidos à pancreatoduodenectomia. Considerando a natureza genética da VHL, o aconselhamento genético e o rastreamento familiar são componentes cruciais no manejo desses pacientes. A decisão de realizar uma pancreatoduodenectomia deve considerar a saúde geral do paciente e a qualidade de vida pós-operatória.
Carcinoma de tireóide na doença de Graves: uma revisão da literatura
Authors: Hasse Bruna Carolina , Alencar Queren Hapuque Oliveira , Vasconcelos Milena Bentivoglio Cunha Naves , Cambréa Maria Luiza Ferreira , Costa Karen Larissa
Published: July 2024

Introdução: A relação entre o carcinoma de tireoide e a doença de Graves ainda não é bem estabelecida, mas estudos apontam o papel do TSH como promotor de crescimento tumoral. Embora a agressividade da neoplasia possa ser variável, a coexistência do hipertireoidismo de Graves indica pior prognóstico ao paciente. Objetivo: revisar, em bases de dados, sobre a influência da doença de Graves na patogênese do carcinoma tireoidiano, discutindo o manejo e tratamento adequado. Metodologia: A pesquisa foi realizada no período de junho de 2024, em artigos e revisão de literatura em bases de dados como Scielo e PubMed no período de 2019 a 2024 utilizando descritores em saúde como critérios de inclusão, e excluídos os artigos publicados previamente, em duplicada ou que não estavam disponíveis na íntegra. Discussão: Para um diagnóstico assertivo da coexistência das patologias apresentadas, além de uma anamnese e um exame físico detalhados, utiliza-se um ultrassom tireoidiano, revelando, além do “inferno tireoidiano”, compatível com Graves, um nódulo. Além disso, pode-se utilizar a PAAF, classificando o nódulo em benigno ou maligno. Uma vez diagnosticado, opta-se pela tireoidectomia total ou parcial, efetuando uma ressecção ainda mais extensa como forma de deixar margens livres. Considerações finais: apesar de pouca incidência da coexistência das duas alterações, não são excludentes, portanto, é dever da equipe médica um diagnóstico e conduta assertivos e precoces, garantido bem-estar ao paciente.
USING EMPIRICAL EVIDENCE TO ANALYSE THE IMPACT OF CULTURE ON SOCIO-ECONOMIC DEVELOPMENT IN EUROPE
Authors: Mažeikaitė Kristina
Published: July 2024

This paper aims to propose strategies for evaluating the impact of culture on socio-economic development and provide empirical evidence through an econometric model. Today socio-economic development depends on more parameters than what the theory of the modern growth model suggests and the most undervalued area is culture. However, defining and evaluating culture can be challenging due to its multidimensional nature. This article proposes the notions of culture and strategies for assessing its impact on socio-economic development. Moreover, theoretical analysis is supplemented by empirical evidence. In order to capture the impact of culture, cultural index is composed. Finally, the impact of culture is estimated using a panel data model with instrumental variables. The main results show, that the panel data model with instrumental variables captures the positive indirect effects of culture on economic growth. The human capital channel serves as the mechanism through which culture contributes to economic growth.
Redefining Financial Standards: Addressing the Accounting Challenges of Cryptocurrencies with a Blockchain Framework
Authors: Rkein Hasan , Danach Kassem , Dirani Ali El , Abbass Fatima
Published: July 2024

The swift adoption of cryptocurrencies presents significant challenges for traditional accounting frameworks. This study explores the limitations of existing standards, specifically IFRS and GAAP, in effectively accounting for cryptocurrencies and emphasizes the need for modified standards that accurately reflect the unique characteristics of these digital assets. Through a combination of quantitative and qualitative analyses, this paper highlights substantial deficiencies in current accounting practices and advocates for the development of tailored accounting standards. Additionally, it introduces a blockchain framework aimed at enhancing the transparency, accuracy, and compliance of cryptocurrency accounting. This innovative framework leverages blockchain technology to align with the decentralized nature of digital assets, proposing a transformative approach to meet the unique demands of cryptocurrency transactions.
Analisis Putusan Pembalakan Liar Terhadap Hutan Lindung di Indonesia
Authors: Pramitaqwati Anindya , Rosnawati Emy
Published: July 2024

Penebangan liar di hutan lindung Indonesia masih menjadi isu penting yang membutuhkan penegakan hukum yang ketat. Penelitian ini menganalisis putusan pengadilan terhadap pembalak liar untuk menilai efektivitas penegakan hukum. Dengan menggunakan metode yuridis normatif dengan pendekatan kasus dan statistik, penelitian ini mengevaluasi putusan pengadilan dan tren kasus pembalakan liar. Temuan menunjukkan bahwa lembaga penegak hukum menjatuhkan hukuman kepada para pelanggar, yang mencerminkan komitmen terhadap ketentuan hukum. Analisis data menunjukkan fluktuasi dalam kasus pembalakan liar, dengan penurunan yang diamati pada tahun 2007-2008, 2010-2012, 2012-2020, dan 2021-2022, dan peningkatan pada tahun 2008-2010 dan 2020-2021. Hal ini menunjukkan bahwa meskipun upaya penegakan hukum cukup kuat, penebangan hutan ilegal masih terus terjadi. Studi ini menyimpulkan bahwa para penegak hukum telah bekerja keras untuk menghentikan penebangan liar, meskipun upaya yang berkelanjutan dan strategi adaptif sangat penting untuk mencapai kemajuan yang berkelanjutan.
Descrição da frequência de aleitamento materno exclusivo e condições de trabalho de mães aeronautas
Authors: Hartmann Ana Carolina , Sica Caroline D'Azevedo
Published: July 2024

Objetivo: Descrever a frequência de aleitamento materno exclusivo, dificuldades vivenciadas no aleitamento materno, características da licença maternidade e retorno ao trabalho de mães aeronautas antes do primeiro ano de idade de seus filhos. Método: Estudo quantitativo com delineamento transversal. A pesquisa foi realizada através do questionário online. Questionou-se sobre a amamentação, como tempo de duração das mamadas, orientações recebidas, tempo de aleitamento materno exclusivo (AME) e questões relacionadas ao retorno da aeronauta após o término da licença-maternidade. Resultados: A amostra final foi composta por 31 mães aeronautas, cujo acompanhamento pré-natal e parto foram realizados na rede privada, e todas pretendiam amamentar. A prática de AME foi relatada por 51,6% das mães e apenas 38,7% delas amamentaram além do primeiro ano de vida após o retorno ao voo. A prorrogação da licença-maternidade foi utilizada por 93,5% das mães, 87,1% afirmaram fazer uso da Escala Amamentação após o retorno ao trabalho e 71% residiam na mesma cidade da base contratual. Conclusões: Verificou-se que a maioria das mães fez uso da Escala Amamentação e relatou que esta foi útil para a prática do aleitamento. No entanto, observa-se que existem outras dificuldades, como dor, fissura, que favorecem o desmame precoce e que ocorreram no período de licença-maternidade, concluindo-se que a educação da mãe e da rede de apoio antes, e o suporte após o parto, podem aumentar as chances de AME e auxiliar na sua continuidade após o retorno ao trabalho da aeronauta.
Palavras-chave: Aleitamento materno. Aviação. Mulheres trabalhadoras. Licença-maternidade.
The Right of the Victim and Private Prosecutor to Reconciliation with the Person Who is Being Criminally Prosecuted
Authors: Minulin Ruslan M.
Published: July 2024

The article is devoted to the analysis of the legal regulation of the rights of the victim and private prosecutor to reconciliation with the person against whom criminal prosecution is being carried out . It is concluded that the criminal procedure law in general rules does not establish the right of the victim and private prosecutor to reconciliation with the accused . At the same time, such rights are directly or indirectly regulated in special norms .Arguments are given for and against directly establishing the right of the victim to reconciliation with the accused in Art . 42 of the Code of Criminal Procedure of the Russian Federation . The author comes to the conclusion that in cases of public prosecution, the absence of an obligation to terminate the criminal case in connection with the reconciliation of the parties means the impossibility of directly securing the victim’s right to reconciliation . It is proposed to formulate this right as the right of the victim “to file a petition to terminate the criminal case in connection with the reconciliation of the parties”, which corresponds to the discretionary nature of Art . 25 Code of Criminal Procedure of the Russian Federation . At the same time, it is concluded that this right must be explained to the victim, regardless of the presence of other conditions for exemption from criminal liability in accordance with Art . 76 of the Criminal Code of the Russian Federation .In cases where the case is not dismissed, it is proposed to regard the reconciliation of the parties as a circumstance mitigating punishment .
Penyuluhan Kesehatan Mental sebagai Upaya Promotiv Preventif Kesehatan
Authors: Mahendra Pipiet , D Saing Sitti Nur Masyithah , Khafid Yudis Asfar , Rhomadon Ashari , Poniasih Ami , Saleh Ria Amelia , Hakim Anisa Al , Putri Irkhamni Nabila Amalia , Djannah Sitti Nur , Solikhah Solikhah
Published: July 2024

Kesehatan mental seseorang sama pentingnya dengan kesehatan fisik, di mana keadaan mental yang sehat tidak terlepas dari kesehatan fisik yang baik. Menurut Organisasi Kesehatan Dunia (WHO), kesehatan mental tidak hanya mengacu pada tidak adanya penyakit, tetapi juga pada keadaan sejahtera di mana individu mampu mengembangkan kemampuannya dan mengatasi tekanan dalam kehidupan sehari-hari. Definisi ini menjadi dasar bagi rencana aksi kesehatan mental yang mencakup promosi kesehatan mental, pencegahan dan pengobatan penyakit mental, serta rehabilitasi. Rencana ini menekankan aspek perkembangan anak-anak dan remaja, seperti kemampuan mengelola pikiran dan emosi, membangun hubungan sosial, dan keterampilan belajar. Kegiatan pengabdian ini menggunakan desain eksperimen dengan evaluasi pre-test dan post-test. Jumlah peserta sebanyak 163 orang dengan menggunakan Kuesioner Self-Reporting Questionnaire (SRQ). Pengetahuan mahasiswa meningkat setelah intervensi, dengan skor pre-test rata-rata 86,73 dan skor post-test rata-rata 88,95. Uji statistik dengan uji alternatif Wilcoxon menunjukkan nilai P=0,000, mengindikasikan hubungan yang signifikan sebelum dan sesudah intervensi. Pendidikan kesehatan jiwa dapat meningkatkan pengetahuan mahasiswa.
Imposibilitatea comunicării ororii războiului în Nimic nou pe frontul de vest de Erich Maria Remarque
Authors: MOCANU Sorin
Published: July 2024

Romanul lui Erich Maria Remarque, Nimic nou pe frontul de vest, nu este,
în ciuda aparenţelor, un roman care descrie realist războiul, ci unul care
caracterizează condiţia de a fi în război, ilustrând înstrăinarea de viaţa de
dinainte şi imposibilitatea adaptării generaţiei de veterani la existenţa
postbelică. Războiul, forţă distrugătoare şi nihilistă, este reprezentat ca o
realitate oribilă pe care necombatantul nu o poate înţelege şi nici măcar
închipui, şi care produce traume psihice incompatibile cu viaţa normală.
Prin intermediul personajului Paul Baumer, autorul se eliberează de de-
presia şi disperarea produse de trecerea prin război şi ilustrează premisele
crizei şi ale inadaptării veteranilor la lumea postbelică; cei care au
supravieţuit fizic se regăsesc incapabili de viaţă normală şi se învinovăţesc
pentru asta. Articolul îşi propune să identifice şi să analizeze pasajele în
care autorul exprimă direct incapacitatea necombatanţilor de a înţelege în
mod real ceea ce se întâmplă pe front, precum şi imposibila adaptare a
veteranilor la viaţa civilă.