bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Leakage Inductances in Shunt Reactors: Application to High Voltage Transmission Lines
Authors: Minh T. P. , Duc H. B. , Quoc V. D.
Published: June 2022

Inductance is one of the main parameters directly related to the reactive powers of Shunt Reactors (SRs) in electrical systems. Thus, the definition and computation of leakage inductances and the ratio of leakage to total inductances play an extremely important role in the design and manufacturing of SRs. In this study, a finite element approach was developed to compute leakage and total inductances and define a relationship between them with different SR powers and high voltage levels. The expanded method is presented with the magnetic vector potential formulations.
Performance Comparison of Ensemble Learning and Supervised Algorithms in Classifying Multi-label Network Traffic Flow
Authors: Machoke M. , Mbelwa J. , Agbinya J. , Sam A. E.
Published: June 2022

Network traffic classification is of significant importance. It helps identify network anomalies and assists in taking measures to avoid them. However, classifying network traffic correctly is a challenging task. This study aims to compare ensemble learning methods with normal supervised classification to come up with improved classification methods. Three types of network traffic were classified (Benign, Malicious, and Outliers). The data were collected experimentally by using Paessler Router Traffic Grapher software and online and were analyzed by R software. The datasets were used to train five supervised models (k-nearest neighbors, mixture discriminant analysis, Naïve Bayes, C5.0 classification model, and regularized discriminant analysis). The models were trained by 70% of the samples and the rest 30% were used for validation. The same samples were used separately in predicting individual accuracy. The results were compared to the ensemble learning models which were built with the use of the same datasets. Among the five supervised classifiers, k-nearest neighbors and C5.0 classification scored the highest accuracy of 0.868 and 0.761. The ensemble learning classifiers Bagging (Random Forest) and Boosting (eXtreme Gradient Boosting) had accuracy of 0.904 and 0.902 respectively. The results show that the ensemble learning method has higher accuracy compared to the normal supervised classifiers. Therefore, it can be used to detect malicious activities in network traffic as well as anomalies with improved accuracy.
Modeling and Comparison of Fuzzy-PI and Genetic Control Algorithms for Active and Reactive Power Flow between the Stator (DFIG) and the Grid
Authors: Guediri A. , Guediri A. , Touil S.
Published: June 2022

This paper performs a comparison between Fuzzy-PI regulators and Genetic Algorithm (GA) for controlling an active and reactive Doubly-Fed Induction Generator (DFIG) for providing power to the electrical grid. Theoretical analysis, modeling, and simulation studies are provided. Control strategies were developed for both active and reactive forces in order to optimize energy production. The performance of the two control strategies was examined and compared using benchmarks for durability and reference traceability. This paper studied a system consisting of a wind turbine operating at variable wind speed and a two-feed asynchronous machine (DFIG) connected to the grid by the stator and fed by a transducer at the side of the rotor. The conductors were separately controlled for active and reactive power flow between the stator (DFIG) and the grid, which was achieved in this article using conventional PI and fuzzy logic controllers. The considered controllers generated reference voltages for the rotor to ensure that the active and reactive power reached the required reference values. This was done in order to ensure effective tracking of the optimum operating point and the maximum output of electrical power. System modeling and simulation were examined in Matlab/Simulink. Dynamic analysis of the system was performed under variable wind speed.
Load-Frequency Control of Three-Area Interconnected Power Systems with Renewable Energy Sources Using Novel PSO~PID-Like Fuzzy Logic Controllers
Authors: Doan D. V. , Nguyen K. , Thai Q. V.
Published: June 2022

Modern era power systems may include not only traditional primary energy sources like hydro or thermal energy, but also a variety of Renewable Energy (RE) sources such as solar and/or wind power. This leads to the complexity of the electrical networks related to their design and construction as well as system stability and control issues. Considered to be one of the most crucial control issues, Load Frequency Control (LFC), must be continuously improved in order to ensure the control goals. For an interconnected power system, the control purposes are to maintain the net frequency at nominal value, e.g. 50 or 60Hz as well as to ensure that tie-line power flows are stable at scheduled values. This work proposes a novel LFC strategy applying Particle Swarm Optimization (PSO) ~ PID – like fuzzy logic–based controllers. PSO is one of the most effective optimization techniques. It is used to optimally determine four scaling factors for each LFC proposed in this study. A three-area power network consisting of a hydraulic station, a non-reheat plant, and a reheat unit along with RE sources such as wind and solar power are taken into consideration. The control performance of the proposed control strategy is compared to those of existing controllers, i.e. Genetic Algorithm (GA), Bacteria Foraging Optimization Algorithm (BFOA), Fractional Order-PID (FPID), and fuzzy logic-based PI controllers for the same interconnected power grid model with various case studies of load changes along with nonlinearities and different RE source conditions. Simulation results implemented in MATLAB/Simulink demonstrate the feasibility and applicability of the proposed control strategy.
Utilizing Numerical Simulations to Analyze the Efficiency of a Porous Reactor
Authors: Ribeiro do Prado Júnior W. , Martins J. A. , Romão E. C.
Published: June 2022

This paper presents a series of numerical simulations of a porous reactor, where a generic reaction between reagents is carried out, generating a product. All numerical simulations were performed by using the software COMSOL Multiphysics, which made use of the Navier-Stokes and Brinkman equations. These equations were utilized to govern the fluid flow in the numerical simulation. Throughout the simulations, several initial parameters were altered to evaluate their impact on the reactor efficiency based on the concentration of component C.  Furthermore, other parameters such as the distribution of speed and geometry in the equipment were taken into consideration, and an optimal configuration for the case is demonstrated.
A Second Order Arnoldi Method with Stopping Criterion and Reduced Order Selection for Reducing Second Order Systems
Authors: Tamri A. , Mitiche L. , Adamou-Mitiche A. B. H.
Published: June 2022

This paper introduces a new algorithm for reducing large dimensional second-order dynamic systems through the Second Order Arnold Reduction (SOAR) procedure, with a stopping criterion to select an acceptable good order for the reduced model based on a new coefficient called the Numerical-Rank Performance Coefficient (NRPC), for efficient early termination and automatic optimal order selection of the reduced model. The key idea of this method is to calculate the NRPC coefficient for each iteration of the SOAR algorithm and measure the dynamic evolution information of the original system, which is added to each vector of the Krylov subspace generated by the SOAR algorithm. When the dynamical tolerance condition is verified, the iterative procedure of the algorithm stops. Three benchmark models were used as numerical examples to check the effectiveness and simplicity of the proposed algorithm.
The impact of splenectomy on human lipid metabolism
Authors: Gunes Orgun , Turgut Emre , Bag Yusuf Murat , Gundoğan Ersin , Gunes Ajda , Sumer Fatih
Published: June 2022

Background: Splenectomy impacts hematological, immunological, and metabolic functions of the patient. Since our understanding of its metabolic effects, in particular effects on lipid metabolism, is limited, this study aims to investigate the effects of splenectomy on lipid metabolism.

Methods: The data from 316 patients undergoing splenectomy between 2009 and 2019 were retrospectively analyzed. Thirty-eight patients whose serum lipid values were measured both preoperatively and 1 year after surgery were included in this study.

Results: Significantly higher levels of total cholesterol, low-density lipoprotein (LDL), and non-high-density lipoprotein (HDL) lipid profile were found in the postsplenectomy measurements. However, no significant differences were recorded in levels of triglyceride, HDL, or very-LDL.

Conclusion: We determined that splenectomy does impact lipid metabolism, and that the metabolic effects of splenectomy should further be investigated.
WebFarm
Authors: Ajinkya P. Lokhande  , Akshay N.Mane  , Pratik S. Mali  , Bhaskar A. Itap  , Mrs. G. S. Sirdeshmukh  , Mrs. G. S. Sirdeshmukh
Published: June 2022

The purpose of WebFarm system is to provide the correct and required information of the crops, vegetables, fruits and their fertilizers as per the requirement of farmers/customers. Also farmers can get requirement information in their native languages and they can check the weather (temperature) as per their region/location.
Representando fenômenos emergentes
Authors: Dias William Ananias Vallerio
Published: June 2022

Modelos representacionais são usados na prática científica para representar diferentes fenômenos. O propósito deste trabalho é examinar o uso de autômatos celulares (AC) para representar fenômenos emergentes, isto é, fenômenos com aspectos globais que não podem ser preditos apenas a partir de seus aspectos locais, procurando entender como se dá a representação nesse processo de modelagem. Uma abordagem sugerida é a acepção DEKI desenvolvida por Roman Frigg e James Nguyen, no qual o processo de representação envolve quatro aspectos: denotação do sistema-alvo pelo modelo sob uma interpretação, exemplificação das propriedades relevantes no modelo, formulação de uma legenda que relaciona propriedades do modelo com propriedades do alvo e imputação das propriedades dadas pela chave ao alvo. Nessa acepção, AC representariam os sistemas-alvo denotados como sistemas complexos que podem ser interpretados em nível local e global, de modo que propriedades emergentes são exemplificadas em nível global.
El Arquetipo Vertebrado de Richard Owen: Razón de Ser y Destino de unos de los Modelos Más Influyentes en la Historia de la Biología
Authors: Caponi Gustavo Andrés
Published: June 2022

El arquetipo vertebrado delineado por Richard Owen a mediados del Siglo XIX fue un modelo concebido para pautar el análisis morfológico de los seres vivos dentro de los lineamientos definidos por la idea de una unidad de composición cuando ella se aplicaba al caso específico de los vertebrados. Pero aquí, además de analizar la razón de ser originaria de ese arquetipo y su modo de operar dentro del contexto epistémico en el que efectivamente surgió, también aludiremos al modo en que ese modelo pudo pasar a ser considerado, no ya como una idealización, o una abstracción metodológicamente operativa, sino como una aproximación a una entidad real que debía ser individualizada y debidamente descripta.
What is the aim of models in formal epistemology?
Authors: Rui Matheus de Lima
Published: June 2022

It is certainly well accepted that formal models play a key role in scientific job. Its use goes from natural sciences like physics and even to social sciences like economics and politics. Using mathematics allows the researcher to consider more complicated scenarios involving several variables. Some models are developed to make predictions, others to describe a phenomena, or just to improve the explanation of events in the world. But what has all this to do with philosophy? The aim of the present paper is to investigate debates on the role of formal models in a specific philosophical subject, precisely, the epistemology of rationality. Are we able to explain why models are needed in epistemological work? This answer will be addressed on the assumptions that epistemological theorizing is committed with normative statements. More specifically, epistemologists are concerned with normative questions about what rationality requires from epistemic agents. The first goal is to discuss some assumptions about the role of mathematical models in formal epistemology undertaking. And secondly, I will argue for the following two claims: (i) formal models are useful tools for predicting consequences of normative assumption about what is intuitively required by rationality; and (ii) insofar rationality theory is normative in virtue of being instrumentalist and aiming at truth, formal models are means-end tools, therefore, for rationality, mathematical models are devices for maximizing truth in doxastic states.
Ignorância Proposicional e Proposições Falsas
Authors: Bispo Lucas Jairo Cervantes
Published: June 2022

Neste trabalho discuto a natureza e a estrutura de análise da ignorância proposicional. Meu objetivo é de apontar que, em primeiro lugar, diferentemente de como ao menos duas das principais concepções da epistemologia da ignorância têm pressuposto, a análise da ignorância proposicional não se reduz a estrutura “S é ignorante que P” ou variantes semelhantes a esta estrutura. Ao lerem a ignorância proposicional reduzida em termos de “S é ignorante que P”, essas concepções não fazem a melhor análise da ignorância proposicional. Isto porque, por um lado, geram um problema que se refere a uma possibilidade pouco trabalhada. Trata-se da possibilidade da ignorância sobre proposições falsas e o problema, como será mostrado, é que nessa redução há boas razões tanto para afirmar como para negar essa possibilidade. Isso se constitui, no mínimo, como uma tensão teórica relevante que pode comprometer essas concepções e as análises realizadas a partir delas. Por outro lado, essa redução exclui ao menos um sentido geral e não necessariamente factivo de ignorância proposicional, o que nos priva de uma análise mais adequada da ignorância e de outros temas relacionados. Tendo esse problema e os seus desdobramentos em vista, apontarei, em segundo lugar, para uma hipótese que tem o potencial de dissolvê-lo a partir da reformulação de como compreendemos a ignorância proposicional, herdando as vantagens das razões a favor e das razões contra a possibilidade da ignorância sobre proposições falsas e superando as objeções levantadas contra elas.
Development and Initial Testing of the Electronic Activity Card Sort (ACS3) Among Community-Dwelling Adults
Authors: Boone Anna E. , Wolf Timothy J. , Baum Carolyn M.
Published: June 2022

Importance: The Activity Card Sort is a valid, widely used measure of participation. There is a need for remotely delivered measures of participation to support the growing use of telehealth.

Objective: To develop and test the concurrent validity and acceptability of the electronic Activity Card Sort (ACS3).

Design: Cross-sectional.

Setting: Research laboratory.

Participants: Community-dwelling adults.

Outcomes and Measures: The Activity Card Sort (ACS) and the ACS3 were administered in randomized order. Relationships between performance on the overlapping items of the ACS and ACS3 were evaluated using Spearman’s ρ correlations. Additionally, acceptability of the ACS3 was evaluated using a survey with a 5-point Likert scale.

Results: High correlations were found between each of the four domains (rs ≥ .836) and total current activities score (rs = .863) between the ACS and ACS3. Ratings on the survey indicate high levels of acceptability and usability for the ACS3.

Conclusions and Relevance: Findings suggest that performance on the ACS3 is consistent with performance on the ACS. This finding coupled with a high level of acceptability indicates that the ACS3 may be a clinically useful tool for evaluating daily life participation.

What This Article Adds: The ACS3 provides an electronic, paperless option for measuring multiple domains of participation in adults.
Appraising Psychiatric Care From a Different Angle: Occupational Therapy Activities and Cardiorespiratory Fitness for Inpatients With Chronic Mental Illness
Authors: Lee Hui-Ling , Hwang Eric J. , Wu Shang-Liang , Hsu Wan-Chi
Published: June 2022

Importance: People with chronic mental illness (CMI) are at high risk of poor cardiorespiratory fitness as a result of sedentary behavior and physical inactivity. Occupational therapy practitioners play a key role as advocates for positive lifestyle change for people with CMI.

Objective: To determine the relationships between occupational therapy activities and cardiorespiratory fitness among inpatients with CMI.

Design: This retrospective research included three phases: descriptive cohort, case–control, and cross-sectional studies.

Setting: Psychiatric inpatient facility.

Participants: Inpatients with CMI, ages 18 to 65 yr (N = 325).

Outcomes and Measures: Data were collected over a 12-mo period. Each daily occupational therapy activity performed by participants was converted to energy expenditure (in kcal). Cardiorespiratory fitness was measured by means of the 3-Minute Step Test.

Results: After daily occupational therapy activities, significantly more participants increased cardiorespiratory fitness than declined (McNemar χ2 [1] = 29.18, p < .05). Prevocational activities and moderate- to high-intensity exercises met the optimal energy expenditure level (>352 kcal) necessary to achieve an increase in cardiorespiratory fitness.

Conclusions and Relevance: Occupational therapists in psychiatric inpatient settings should prescribe individualized occupation-based or physical activities that meet the optimal daily energy expenditure for each client to improve their cardiorespiratory function.

What This Article Adds: This study is one of the first attempts to explore cardiorespiratory fitness outcomes after daily occupational therapy activities for people with CMI. Physical benefits unfolded throughout psychiatric care, echoing the profession’s stance on holistic practice.
Relationship between fissility, composition, rock fabric and reservoir properties in Vaca Muerta Formation (Neuquén Basin, Argentina): from outcrop to subsurface core data
Authors: Martín Lucía Inés , Marchal Denis , Barredo Silvia , Naides Claudio , Blanco Silvia
Published: June 2022

The fissility is the ability of some rocks to split along relatively smooth surfaces parallel to the bedding. This property observed mostly in fine-grained rocks is particularly expressed in outcrops, where rocks are subjected to weathering processes. Most authors associate the fissility to the abundance of clay minerals and their orientation parallel to the bedding. The horizontal fabric can be promoted by depositional conditions such as sediment composition, quantity of total organic carbon content (TOC) and depositional mechanisms, giving rise to a primary fissility. Alternatively, the alignment of platy minerals can be linked to the burial history of the rock, by processes such as mechanical compaction or secondary mineral growth, resulting in a secondary fissility. The present study aims to identify the main controls of fissility development at the micro- and macroscopic scale in rocks of the Vaca Muerta Formation exposed in the Cerro Mulichinco area and in a 121-meter-long core extracted from a well within the Neuquén Basin. In outcrops, fissility is related to fine-grained laminated facies with low carbonate content, revealing the strong control exerted by lithology. The TOC measurements allow establishing a positive correlation between organic matter content and fissility intensity. Moreover, the analysis of the transgressive-regressive cycles shows that fissility is higher around the maximum flooding surfaces. Regarding their mechanical characteristics, the different interfaces observed in core are classified into first and second-order, the last one including fissility planes. Some of these interfaces evolve from potential (partially open) to effective (totally open) discontinuities in response to changes of stress conditions during the core extraction and due to the stress relaxation through time: weeks (T1), months (T2) and years (T3) after extraction. The time evolution of the effective core discontinuities points out rock intervals that are variably broken and core segments that remain intact. The Drying Alcohol Discontinuities (DAD) methodology reveals potential discontinuities within apparently intact core segments. By using this technique, a 4-class index is established as a proxy for fissility degree. When integrated with geological, petrophysical and geomechanical data, this index enables characterizing the main mechanisms controlling rock fissility that express through discontinuities promoting the loss of competence of a rock. Consequently, this mechanical property is considered to influence the efficiency of hydraulic fracture in shale reservoir completion.
Biostratigraphic and paleobiogeographic significance of the Darriwilian microfossils from the top of San Juan Formation in the Los Baños de Talacasto section, Central Precordillera (Argentina)
Authors: Mestre Ana , Gallardo Mercedes , Salas María José , Heredia Susana
Published: June 2022

The microfossil hosted in the strata of the upper part of the San Juan Formation has been widely studied in several sections to the northward of the Argentinian Central Precordillera. In contrast, the coeval strata at the Los Baños de Talacasto section, in the southern part of the Central Precordillera, have scarce biostratigraphic and sedimentological data. In this work, a conodont association together with single ostracod species are documented for the first time in this section. The record of the Lenodus crassus and L. pseudoplanus zones confirms the Darriwilian age for these beds and accurately correlates them with equivalent strata of the San Juan Formation studied in several sections of the Central and Eastern Precordillera. The microfacies analysis verifies the presence of Nuia síbirica Maslov, 1954, peloids, intraclasts, cyanobacteria, calcareous algae, and a possible microbialite indicating a shallow warm-water subtidal environment, in equatorial to subequatorial climate. This suggests a low latitudes position for Precordillera during the early-middle Darriwilian. The conodont genus Aurilobodus Xiang and Zhang is recognized for the first time from the Precordillera, and the Aurilobodus leptosomatus An specimens are described and illustrated. This genus shows affinities to the warm water in shallow marine environments of North China, Central Asia, South Tibet, western Thailand, Australia, and Newfoundland, suggesting probable ties between Precordillera and these regions. The record of the ostracod Pilla nodospinosa Salas in the study section would agree with the correlation of the top of San Juan Formation with the lower levels of the Las Aguaditas Formation in the Central Precordillera, and also suggests paleobiogeographic links with Eastern Gondwana and Australia regions during the Darriwilian times.
Fossil vertebrates of the early-middle Miocene Cerro Boleadoras Formation, northwestern Santa Cruz Province, Patagonia, Argentina
Authors: Vizcaino Sergio F. , Bargo M. Susana , Pérez M. Encarnación , Aramendía Inés , Cuitiño José I. , Monsalvo Eduardo S. , Vlachos Evangelos , Noriega Jorge I. , Kay Richard F.
Published: June 2022

The early-middle Miocene continental Cerro Boleadoras Formation (CBF) crops out in the area of Cerro Boleadoras and Cerro Plomo on the western slope of the Meseta del Lago Buenos Aires, northwestern Santa Cruz Province, Argentina. The lower levels of the CBF consist of laterally extensive medium to pebbly sandstone beds with trough cross-bedding, interpreted as fluvial channel deposits, interbedded with tabular fine-grained floodplain deposits. Recent fieldwork provided fossil vertebrates from these levels with an estimated age between ~16.5 Ma and 15.1 Ma
(late Burdigalian-early Langhian). The studied section temporally overlaps with the middle or upper sections of the Santa Cruz Formation (SCF) in the Austral-Magallanes Basin of southern Patagonia, the Río Frías Formation in Chile, and the lower Collón Curá Formation of northern Patagonia. We compile an integrated faunal list for this locality, including specimens from previous collections, and discuss its chronological and paleoenvironmental implications. The taxa list includes most of the groups recorded in the SCF: one anuran, three birds, and at least 33 mammals (metatherians, xenarthrans, litopterns, notoungulate typotheres and caviomorph rodents), indicating a Santacrucian age sensu lato. We also recorded a testudine, which constitutes the southernmost record of tortoises in South America and worldwide. Faunal dissimilarities between the vertebrate fossil content of the CBF and the mentioned sections of the Santa Cruz, Río Frías
and Collón Curá formations may reflect ecologic, climatic and geographic differences rather than temporal ones. The co-occurrence of arboreal or semiarboreal, browsing, frugivorous, and grazing mammals suggests the presence of both forested and open environments for the area occupied by the CBF rocks. However, it is not possible to discern whether these two environments coexisted or alternated, and whether one environment predominated over the other. Marker taxa, such as the chinchillid rodents Prolagostomus and Pliolagostomus, and the typothere Pachyrukhos indicate a trend to aridification during the Miocene in southern Patagonia, as previously reported for the upper part of the SCF along the Río Santa Cruz and south to the Río Coyle, along the Atlantic coast and the Río Gallegos.
(U-Th)/He ages of Proterozoic-Paleozoic basement rocks from northern Chile (18-19°S) and implications on the Neogene uplift history of the Western Cordillera
Authors: García Marcelo , Aguilar Germán , Rodríguez María Pía , Metcalf James
Published: June 2022

In the Western Cordillera of northern Chile, the Proterozoic-Paleozoic Belén Metamorphic Complex is covered by late Oligocene-early Miocene (25-18 Ma) rocks, and both units are involved in west-vergent contractional deformation, which results in exhumation. A Miocene age (18 to 6 Ma) for deformation has been previously constrained by stratigraphy and cross-cutting relationships. To understand the youngest exhumation event and reverse faulting, we obtained 21 (U-Th)/He ages from two samples of the metamorphic rocks and the associate inverse thermal modeling. Five zircon (U-Th)/He ages from one sample are 113 to 226 Ma, very scattered, while five zircon ages from the other, are 20 to 49 Ma. The high dispersion of zircon (U-Th)/He data prevents the geological interpretation of results. Apatite grains from both samples yielded 11 (U-Th)/He ages between 10.4 and 18.7 Ma, with 9 values from 12.0 to 15.5 Ma. A slight positive correlation between apatite single-grain dates and effective uranium for 4 crystals of one sample suggests relatively slow cooling. The T-t model including these 4 apatite ages shows continuous cooling from 15 to 0 Ma with a relatively more marked cooling period at 11-7 Ma. The middle-late Miocene thermal signal agrees with the geologic evolution of the region and would permit to date the last activity of the Chapiquiña-Belén reverse fault, which uplifted and exhumed the metamorphic rocks. This signal is relatively similar to that the eastern Altiplano, but differs considerably from that the forearc.
RTG-Lieferanten sollen Mehrkosten tragen
Authors: Mende Jan , lz hjs , Brändlein Philip
Published: June 2022

Handel und Industrie verkeilen sich im Konflikt um steigende Lebensmittelpreise immer mehr. Die Händlerorganisation RTG dreht die Argumente der Industrie nun um – und verlangt ihrerseits mehr Geld von Lieferanten, weil die Kosten für Energie und Transport steigen.
Penny wächst auf der Fläche
Authors: Schulz Hans-Jürgen , Tewes Werner
Published: June 2022

Penny wächst auf bestehender Fläche. Nach vier Monaten liegt der Rewe-Discounter sogar über Vorjahr, obwohl weniger Filialen am Netz sind. Kostensteigerungen in allen Bereichen lassen jedoch bei COO Stefan Magel keine Euphorie aufkommen.
Veganz-Werk verzögert sich
Authors: Kitzmann Marco , Adelhardt Andrea
Published: June 2022

Im ersten Quartal des Jahres hat das börsennotierte Unternehmen Veganz Umsatzeinbußen verzeichnet, die sich auf den Aktienkurs und die Jahresprognose auswirken.
Engpass mit Ansage
Authors: Shinde Sonia
Published: June 2022

Während die EU-Staaten über ein Öl-Embargo gegen Russland diskutieren und die Bundesnetzagentur ihren Notfallplan für einen plötzlichen Gasstop ausarbeitet, plagen die Branche noch mehr Sorgen: Die Regierung will russische Gasimporte drastisch senken und unter anderem mit Flüssigerdgas substituieren. Doch Experten sind skeptisch. Sonia Shinde
„Crémant ist der neue Prosecco“
Authors: Murmann Christoph
Published: June 2022

Henkell Freixenet ist Hauptakteur im weltweiten Boom von Prosecco, Cava und Champagner. Ein LZ-Gespräch mit CEO Andreas Brokemper über das Erfolgsrezept und warum es bei deutschem Sekt versagt.
„Ich will so plastikfrei wie möglich leben“
Authors: Brändlein Philip
Published: June 2022

Sie hat schon 2015 den Blog „Plastikfrei Leben“ initiiert. Der LZ erzählt Charlotte Schüler, warum sie bei Produkten der Industrie ganz genau hinschaut.
Elektronische Etiketten erobern die Regale
Authors: Giuri Maurizio
Published: June 2022

Elektronische Preisetiketten ersetzen allmählich bei nahezu allen großen Händlern die üblichen Papierschilder am Regal. Rewe hat bereits mehr als die Hälfte seiner Märkte umgerüstet. Discounter wie Aldi und Lidl ziehen nach. Die neueste Generation der kleinen Displays kommt inzwischen sogar ohne Batterie aus.
Roboter halten Einzug in den Handel
Authors: Giuri Maurizio
Published: June 2022

Der Handel treibt mithilfe von Robotern an vielen Stellen die Automatisierung voran. Inzwischen sind die Helfer aus zahlreichen Lagern nicht mehr wegzudenken. Die Kombination verschiedener Technologien soll neue Anwendungen auf der Verkaufsfläche ermöglichen.
Frostkrone wappnet sich gegen Lieferengpässe
Authors: Hillemeyer Judit
Published: June 2022

Der TK-Spezialist Frostkrone ist mit einem Lieferausfall von Sonnenblumenöl aus der Ukraine konfrontiert. Die Produktion nutzt jetzt vermehrt Rapsöl. Dafür muss Ware zum Teil neu deklariert werden.
Nachhaltigkeit trotz Inflation
Authors: Himberg Mathias
Published: June 2022

Wie lassen sich nachhaltige, hochpreisige Sortimente verkaufen, wenn der Kunde gleichzeitig sparen will? Mit diesem Dilemma haben sich 470 Kaufleute und Industrievertreter in Heilbronn beschäftigt. Die Mitglieder des Kaufmannsverbandes MLF trafen sich bei der Edeka-Händlerfamilie Ueltzhöfer in Heilbronn.
Schnelllieferdienste konsolidieren im Eiltempo
Authors: Klug Denise , Stockburger Manfred , Brändlein Philip
Published: June 2022

Die Luft im Markt wird dünner. Die Quick-Commerce-Anbieter müssen sich beweisen und möglichen Investoren zeigen, dass sie profitabler wirtschaften können.
Ein langer Weg
Authors: Hebben Miriam
Published: June 2022

Unternehmen brüsten sich gerne mit dem Thema Nachhaltigkeit. Doch mit zunehmender Komplexität nimmt die Transparenz ab. Dabei zwingen nicht nur neue gesetzliche Regularien zum genauen Hinsehen. Auch der Handel macht in Sachen Lieferketten Druck. Miriam Hebben
Ersehntes Software-Update lässt wieder Kartenzahlungen zu
Authors: Rode Jörg
Published: June 2022

Nach zehn Tagen mit Umsatzverlusten und verärgerten Kunden entspannt sich die Lage für Händler, die von der Verifone-Kassen-Katastrophe betroffen waren. Ein Software-Update scheint blockierte Kartenzahlungsterminals wieder zum Leben zu erwecken. In der Zwischenzeit haben sich viele Filialisten mit dem alten Lastschrift-Verfahren ELV beholfen.
Der Markt der Payment-Dienstleister ist im Umbruch
Authors: Schneider Stefan
Published: June 2022

Der Markt der Zahlungsdienstleister verändert sich. Damit lohnt es sich für Händler immer mehr, Vertragsbeziehungen zu prüfen und eventuell neue Wege zu beschreiten. Die Rewe Group geht sogar so weit, dass sie einen eigenen Payment-Dienstleister auf den Markt schickt.
Emmi vermarktet sein Engagement
Authors: Nusser Bernd
Published: June 2022

Nach 17 Folgen der 17. Staffel zieht Emmi zufrieden Bilanz. Der Pionier bei Ready-to-Drink-Kaffee verlängert sein Sponsoring der ProSieben-Sendung jetzt auf die Handelsfläche. Dort ist das Unternehmen auch mit seinen Käsemarken präsent.
Preis- und Beschaffungsdiskussion prägt die PLMA
Authors: Konrad Jörg , Lattmann Christian , Varnholt Hendrik , Brändlein Philip , Sachsenröder Delphine
Published: June 2022

„Welcome back“ – unter diesem Motto meldete sich Europas größte Handelsmarkenmesse in Amsterdam nach zweijähriger Corona-Pause als Präsenzveranstaltung mit Nachdruck zurück. Mit etwas weniger Ausstellern und Fachbesuchern, dafür aber in guter Stimmung. Preis- und Beschaffungsdiskussionen drängten allerdings die Gespräche über Private-Label-Neuheiten an etlichen Ständen in den Hintergrund.
Aldi rockt die Rankings
Authors: Wittenhagen Julia
Published: June 2022

In der Hitparade der Top-Arbeitgeber vom Marktforscher Trendence gewinnt der Handel an Momentum. Drittbeliebteste Branche bei den Fachkräften, viele Aufsteiger bei den Schülern: Das erleichtert die Personalsuche. Auffällig ist, wieviel Terrain Aldi Nord und Süd in allen betrachteten Zielgruppen gewonnen haben.
Düngung nach Rezept
Authors: Schaal René
Published: June 2022

Hannover. Individuell angepasste Düngermischungen sind zunehmend gefragt. Auch die N-Effizienz spielt für Landwirte eine wichtigere Rolle, berichten Mitglieder des Bundesverbandes der Düngermischer. Etwas Kopfzerbrechen bereitet eine neue EU-Verordnung.
Gold für zarten Schmelz
Authors: Behme Dagmar
Published: June 2022

Bernburg. Der Campushonig hat 2022 erneut Gold abgeräumt. Bereits seit Jahren beteiligt sich die Hochschule Anhalt am Honigwettbewerb des Deutschen Imkerbundes und erhält Medaillen.
Geld scheffeln mit Weizen?
Authors: Mönch Axel
Published: June 2022

Verbraucherschützer und Die Linke wollen den Terminhandel mit Getreide und Ölsaaten verbieten oder zumindest einschränken. Seit dem Krieg in der Ukraine nimmt die Kritik an Termingeschäften zu. Diese entbehre jeglicher wissenschaftlicher Grundlage, meinen Ökonomen von der Martin-Luther-Universität Halle-Wittenberg.
Ukrainische Häfen bleiben geschlossen
Authors: Mönch Axel
Published: June 2022

Brüssel. Im Konflikt um die Öffnung von Odessa und anderen ukrainischen Häfen ist keine Lösung in Sicht. Russland fordert, die von der EU verhängten Sanktionen zu lockern. Diese ist dagegen nicht bereit, Deals im Getreidehandel auf Kosten der Ukraine abzuschließen.
„Wir sehen Korruption“
Authors: Deininger Olaf
Published: June 2022

Zwanzig Kilometer lange Schlangen von Lkw stauen sich an den Grenzübergängen von der Ukraine nach Rumänien und nach Polen. Viele der Fahrzeuge transportieren Getreide. Dr. Per Brodersen, Direktor der GAA, über die Hintergründe.
Weniger Risiken und Nebenwirkungen
Authors: Schaal René
Published: June 2022

Frankfurt a.M. Manche Fungizide haben unerwünschte Nebenwirkungen auf Nutzinsekten. Versuche von Freiburger Forschern zeigen, dass eine hohe Biodiversität auf dem Acker die Insekten schützen kann, ohne dass auf den Einsatz von Pflanzenschutzmitteln verzichtet werden muss.
Brezel trifft Pizza
Authors: Behme Dagmar
Published: June 2022

Frankfurt a.M. Als Resteverwertung entstanden ist eine bayerisch-italienische Kombination. Jetzt erobert sie Gastronomie und Tiefkühltheken.
Relationship between Alcohol and Homicide, in Nairobi County, Kenya: Autopsy Study.
Authors: Peter Wangai Kiama.
Published: June 2022

This study sought to investigate the relationship between alcohol and homicide, in Nairobi County, Kenya. The study was carried out at the city Mortuary, Nairobi. In this study, all cases of violent deaths for a period of twelve consecutive months were included. Alcohol level estimation was done on 400 of all the study subjects. The 400 were selected consecutively as every fifth subject. This was a purposeful sampling frame and size. The data obtained included age and gender distribution, type of accident, when the accident occurred and the alcohol levels of the deceased. This data was analysed using SPSS. The study concludes that homicide is a preventable public health problem and a major contributor to violent deaths. Moderate and heavy intoxication predispose to homicide. Deaths from accidents were largely those caused by burns and drowning; they were positively correlated with alcohol intake and are a preventable public health problem in Kenya. The study recommends that public policy should educate the public on this phenomenon that relates homicide to alcohol intoxication. Violence causing fatal trauma to the body, the commonest cause of unnatural death, is a preventable leading global public health problem. Further, it shows intercountry and intercity variation. Its prevention and control require data on the magnitude and nature of the problem.
Determining the factors affecting the happiness levels of divorced individuals by ordered logistics regression analysis
Authors: UYAR Burak , BÜYÜKSU Cevdet
Published: June 2022

In cases where the dependent variable is categorical and ordinal, the Ordinal Logistic Regression Model is used for model estimation. In order to predict the Ordinal Logistic Regression Model, it must provide the parallel lines assumption. In the study, the happiness levels of divorced individuals were estimated with the ordinal logistic regression model. The data set used in the analysis was obtained from the Life Satisfaction Survey implemented by the Turkish Statistical Institute in 2020. Brant's Wald Test and Likelihood Ratio Test were applied for the parallel lines assumption and the null hypothesis could not be rejected. In this context, the model ordinal logistic regression model was estimated. The statistically significant gender variable shows that divorced women are happier than divorced men. It has been determined that success and job variables tend to decrease happiness levels in divorced individuals compared to other factors. In general, when the education level is examined, it is seen that the level of happiness of divorced individuals increases as the education level increases. It has been concluded that divorced individuals who are satisfied with their health, education, income and social life are happier than divorced individuals who are not satisfied with their health, education, income and social life. It has been determined that divorced individuals are registered with the Social Security Institution and their happiness levels are higher than those who are not registered.
Efficiency analysis of BLDC motor for variable magnetic field
Authors: ÖZÜPAK Yıldırım
Published: June 2022

With the developing technology, direct current motors have been widely used in industrial applications. The limited use of brushed models in some areas has made Brushless Direct Current Motors stand out. In this paper, the design and analysis of an efficient, high power density, brushless direct current motor (BLDC) for use in electric vehicles is carried out. In this direction, studies have been carried out to reduce the reverse induced voltage, which is the biggest problem of electric motors in the electric vehicle sector. Analyzes were carried out with ANSYS subprograms, which realized a Finite Element Method (FEM) based solution to change the nominal values of the BLDC motor by changing the distance between the rotor and the stator. According to the results of the analysis, it was concluded that the method used in the study can also be used in high speed applications of brushless direct current motors.
On Matrix Sequence of modified Tribonacci-Lucas Numbers
Authors: SOYKAN Yüksel , TAŞDEMİR Erkan , İRGE Vedat
Published: June 2022

In this paper, we define modified Tribonacci-Lucas matrix sequence and investigate its properties.
A retrospective survey of post-graduate career paths of Durban Institute of Technology (DIT-formerly Technikon Natal) homoeopathic graduates from 1994 to 2004
Authors:   , Babaletakis Fotini Nicoleta
Published: June 2022

The first formal Homoeopathic education programme in South Africa introduced Technikon Natal (now the Durban Institute of Technology – DIT). The course had its first intake in 1989 and has since produced some 10 years of graduates. The programme affords the graduate a Master’s Degree in Technology in Homoeopathy (Ross, 2006). Career paths regarding graduates of this programme have never been investigated. Such an investigation was deemed valuable to clarify areas of difficulty regarding the education provided and the profession as a whole, to ascertain the viability of Homoeopathy as a career. It also aimed to identify possible other career choices a graduate may have with the education received. The study was limited to DIT Homoeopathic graduates from 1994 to 2004. The study was designed to investigate the demographic composition of the group, as well as other aspects of their career since graduation.
A nuclear magnetic resonance study of potencies of natrum muriaticum 15CH prepared by trituration and succussion versus natrum muriaticum 15CH prepared by succussion alone
Authors:   , Hofmeyr Dorita
Published: June 2022

The purpose of this investigation was to analyse and compare the Nuclear Magnetic Resonance (NMR) spectra of potencies of Natrum muriaticum 15CH prepared by trituration and succussion, and Natrum muriaticum 15CH prepared by succussion alone. It was hypothesized that in terms of the effect of trituration (or not) of these substances that significant differences exist between the chemical shift and relative integration values of the CH2, CH3, H2O and OH signals of these homoeopathic substances. It was further hypothesized that the process of trituration plays an integral part in the development of distinct physicochemical identities in the potencies mentioned above.
A study comparing the anti-microbial effectiveness of a water-based preparation of hydrastis canadensis to that of an ethanol based preparation on the in vitro growth of candida albicans and escherichia coli
Authors:   , Naidoo Deena
Published: June 2022

The purpose of this study was to compare the effect of a water-based extraction of Hydrastis canadensis on the in vitro growth of Candida albicans and Escheria coli, to a control of distilled water in terms of the size of the zones of inhibition in the disc diffusion assay and turbidity of growth in the tube dilution method. These results were compared to the results obtained from similar experiments using an ethanol-based tinctures of Hydrastis canadensis.
An NMR study of the effect of succussion on parallel potencies of Natrum muriaticum
Authors:   , Lyell Daphne
Published: June 2022

The purpose of this study was to analyse and compare the NMR spectra of multiple parallel potencies of the homoeopathic remedy Natrum muriaticum (chosen for its easy solubility and purity) using 0, 10 and 100 succussions. The remedies were prepared using the classical single vial Hahnemannian method with the same potency and the varying numbers of succussion. A comparison was made in terms of the chemical shift and relative integration values of the OH, CH2, CH3 and H2O signals.
A homoeopathic drug proving of the venom of Bitis gabonica gabonica
Authors:   , Thomson Bruce
Published: June 2022

The purpose of this investigation was to determine the effects of the thirtieth centesimal (30CH) potency of the venom of Bitis gabonica gabonica on healthy individuals in order to elucidate the total morbid symptomatology produced by the drug so that it may be prescribed by Homoeopathic practitioners according to the Law of Similars, as is required by Homoeopathic methodology. It was hypothesized that the 30CH potency of Bitis gabonica gabonica would produce clearly observable signs and symptoms in healthy Provers.
A study comparing the effectiveness of a herbal-complex (Arctium lappa, Berberis aquifolium, Echinacea purpurea and Taraxacum officinale) as compared to homoeopathic simillimum in the treatment of Acne vulgaris
Authors:   , Govender Nervashnee
Published: June 2022

The purpose of this study was to compare the effectiveness of a herbal-complex consisting of (Arctium lappa, Berberis aquifolium, Echinacea purpurea and Taraxacum officinale), as compared to homoeopathic simillimum in terms of the clinical manifestations and the patients’ perception of response to the treatment
The efficacy of the main miasmatic nosodes in the treatment of chronic sinusitis
Authors:   , Dlamini Nomthandazo
Published: June 2022

The purpose of this double blind placebo controlled study was to evaluate the efficacy of the main miasmatic nosodes in the treatment of chronic sinusitis in terms of the patients’ perception of the treatment.
The efficacy of homoeopathic simillimum in the treatment of chronic sinusitis
Authors:   , Ismail Shaida
Published: June 2022

The purpose of this placebo-controlled study was to evaluate the efficacy of homoeopathic simillimum treatment of patients suffering from chronic sinusitis, in terms of the patient’s perception of the treatment.
The effectiveness of topical homoeopathic preparation of Selenium sulphide 8X shampoo in the management of dandruff (Pityriasis Capitis)
Authors:   , Teleman Silvana
Published: June 2022

The purpose of this study was to evaluate the effectiveness of topical Homoeopathic preparation, with Selenium sulphide 8X shampoo, in the management of dandruff (Pityriasis Capitis).
A IMPORTÂNCIA DO FLUXO DIGITAL NA ORTODONTIA
Authors: Teixeira Tayrani de Oliveira , Rolim Valéria Cristina Lopes de Barros
Published: June 2022

Os tratamentos ortodônticos envolvem múltiplos objetivos que vão além da estética e para atingi-los é muito importante começar com um bom diagnóstico. Softwares específicos e equipamentos avançados podem contribuir para a obtenção de melhores resultados. O Fluxo Digital (FD) na ortodontia, consiste em ferramentas digitais de diagnóstico e ferramentas digitais terapêuticas que permitem avaliar, planejar e tratar melhor os pacientes. O objetivo do presente trabalho foi discorrer sobre a importância do fluxo digital na ortodontia. Para tanto foi realizado uma revisão de bibliografia através de uma pesquisa em bases acadêmicas e científicas (PubMed, Bireme, Scielo). Concluindo que na odontologia, principalmente na ortodontia, especialidade em que o planejamento e o diagnóstico são extremamente relevantes, a digitalização de processos proporciona grande precisão, sendo uma excelente ferramenta de visualização tanto para os profissionais como para os pacientes.
Elucidating the critical oligomeric steps in secondary organic aerosol and brown carbon formation
Authors: Ji Yuemeng , Shi Qiuju , Ma Xiaohui , Gao Lei , Wang Jiaxin , Li Yixin , Gao Yanpeng , Li Guiying , Zhang Renyi , An Taicheng
Published: June 2022

Abstract. Small α-dicarbonyls represent the major
precursors of secondary organic aerosol (SOA) and brown carbon (BrC) in the
atmosphere, but the chemical mechanisms leading to their formation remain
unclear. Here we elucidate the fundamental kinetics and mechanisms for
aqueous-phase oligomerization of glyoxal (GL) using quantum chemical and
kinetic rate calculations. Our results identify several essential isomeric
processes for GL, including protonation to yield diol / tetrol and carbenium
ions, nucleophilic addition of carbenium ions to diol / tetrol as well as to
free methylamine / ammonia (MA / AM), and deprotonation to propagate oligomers
and N-heterocycles. Both protonation and nucleophilic addition occur without
activation barriers and are dominantly driven by electrostatic attraction.
Deprotonation proceeds readily via water molecules in the absence of MA / AM
but corresponds to the rate-limiting step for N-containing cationic
intermediates to yield N-heterocycles. On the other hand, the latter occurs
readily via a catalytic process by acidic anions (e.g., SO42-). A
carbenium ion-mediated reaction rate of GL is 4.62 × 10−3 s−1 under atmospheric conditions, in good agreement with the
experimental data. Our results provide essential mechanistic and kinetic
data for accurate assessment of the role of small α-dicarbonyls in
SOA and BrC formation.