bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical study of a vertical pullout capacity of strip anchor plate on a frictional soil
Authors: Hicham Mokhbi  , Mekki Mellas  , Abdelhak Mabrouki  , Jean‐Michel Pereira
Published: August 2024

This paper presents a numerical study of the ultimate pullout capacity of an isolated stripplate anchor, using the finite element method by Plaxis 2D software. The plate anchor is assumedrigid horizontally installed in a frictional soil and subjected to a centered vertical load. The soilbehavior is governed by an elastic‐perfectly plastic law, and Mohr‐Coulomb criterion was adopted.The ultimate pullout capacity is expressed in terms of pullout factor Nγ for different values of thedepth H and the internal friction angle of soil φ'. The numerical results obtained allow us topropose a simple relationship to calculate the pullout factor of a strip plate anchor embeddedhorizontally in frictional soil. The numerical results of this study are finally compared to thoseavailable in the literature.
Multiple solutions for flow mode−transition in an inclined cavity generated by natural convection
Authors: Miloud Zellouf  , Noureddine Moummi  , Adnane Labed  , Kamel Aoues
Published: August 2024

An investigation of natural convection in a rectangular cavity (AR = 4) filled with air (Pr =0.71) heated from the side with adiabatic horizontal walls is carried out numerically. To describethe flow regime, we propose a description of the influence of the angle of inclination and Rayleighnumber on the flow patterns likely to develop in this configuration. The numerical analysis of thegoverning equations of the problem is based on finite volume method with non‐staggered gridsarrangement and is solved through the iterative SIMPLEC algorithm. Results indicate that the angleof inclination has a significant effect on flow mode transition. The existence of multi‐steadysolutions closely depends on the value of the Rayleigh number. For that the Hysteresisphenomenon (multi−steady solutions) for Ra ≥ 2000 are demonstrated and parameter maps of Ravs. φ are proposed.
Experimental and numerical analyses of a thin cylindrical shell model
Authors: Oussama Temami  , Djamal Hamadi  , Abdallah Zatar  , Ashraf Ayoub
Published: August 2024

The analysis of thin shell structures is generally based on theoretical principles. Theexperimental tests on this type of structure are important for understanding the effect of loadingand the geometrical shapes on its mechanical behavior. In this paper, an experimental test of acylindrical shell under the effect of concentrated static loads is presented. A comparativenumerical study is carried out by using two finite elements: the first element called ACM_RSBE5,recently formulated, and the second one, S4R, of ABAQUS code are used for the study of thinshells. The experimental results are compared with those obtained numerically. The results of bothelements, ACM‐RSBE5 and S4R, are in agreement with those obtained experimentally. Theefficiency and the importance of the approach of the flat shell element for thin shell structures areconfirmed.
Influence of the cyclic loading of very large number of cycles on the pile capacity
Authors: Hadj Bekki  , Brahim Tali  , Jean Canou  , Jean-Claude Dupla  , Ali Bouafia
Published: August 2024

The paper presents a study of the bearing capacity of a pile model in calibrationchamber, under a cyclic axial loading, up to very large number of cycles. The experimental study isaimed to the evolution of the bearing capacity of pile obtained after a cyclic loading up to 105cycles. Firstly, we present briefly the experimental device and then the results of cyclic testsperformed on the pile model in the calibration chamber. Several parameters which have asignificant influence on the cyclic behavior of piles have been investigated, such as the cyclicdisplacement amplitude and the density of the soil. The analysis of results indicated that themechanism of densification of the soil around the pile leads to improve pile capacity.
Analyses of a composite functionally graded material beam with a new transverse shear deformation function
Authors: Hamza Guenfoud  , Hassina Ziou  , Mohamed Himeur  , Mohamed Guenfoud
Published: August 2024

In the present paper, we offer a higher-order shear deformation theory for bending of functionally graded beam. A new polynomial shear function is used which satisfies the stress-free boundary conditions (exact boundary conditions on the stress) at both, top and bottom surfaces of the beam. Hence, the shear correction factor is not necessary. Additionally, the present theory has strong similarities with Timoshenko beam theory in some concepts such as equations of movement, boundary conditions and stress resultant expressions. The governing equations and boundary conditions are derived from the principle of minimum potential energy. Functionally graded material FGM beams have a smooth variation of material properties due to continuous (unbroken) change in micro structural details. The variation of material properties is along the beam thickness and assumed to follow a power-law of the volume fraction of the constituents. Finite element numerical solutions obtained with the new polynomial shear function are presented and the obtained results are evaluated versus the existing solutions to verify the validity of the present theory. At last, the influences of power law indicator and the new shear deformation polynomial function on the bending of functionally graded beams are explored.
Prediction method of both azeotropic and critical points of the binary refrigerant mixtures
Authors: Saida Fedali  , Hakim Madani  , Cherif Bougriou
Published: August 2024

The prediction of the azeotropic point and the determination of the critical point inbinary mixtures is very important in refrigerating industry. In this task, a simple method ispresented in order to predict and determine both azeotropic and critical points. Our methodemploys experimental data and a thermodynamic model. 1,1,1,2‐tetrafluoroethane (R134a) in themixture presents the possibility of inventing the azeotropic and critical properties. The mixturesstudied in this work are: Cyclopropane (RC270), Propylene (R1270), Hexafluoroethane (R116) andCarbon dioxide (R744) based on 1,1,1,2‐tetrafluoroethane (R134a). The model consists of thePeng–Robinson equation of state (EoS), the Mathias–Copeman alph a function and the Wong‐Sandler mixing rules involving the NRTL model. The results proved that there is a good agreementbetween the predicted values and the experimental data. The presented methods are able topredict the azeotropic and determine critical positions.
Nonlinear control of a grid connected hybrid energetic systems (HES) based on photovoltaic- fuel cells distributed power generation systems
Authors: Said Khoudiri  , Fateh Benchabane  , Khaled Yahia
Published: August 2024

This paper presents a discrete-time integral sliding mode control for a grid connectedhybrid energetic systems (HES) based on photovoltaic-Solid oxide fuel cell (SOFC) for distributedpower generation systems. The proposed HES systems employ solid oxide fuel cell (SOFC) andphotovoltaic panels as main sources, supercapacitors as complementary sources, and controlledDC-DC boost converter and three levels NPC inverter. A maximum power point tracking (MPPT)control is used in order to maximize the power of the photovoltaic system. The proposed controlconsists of a power management grid interface inverter transferring the energy from the hybridsources into the grid by controlling the main utility grid and the common DC voltage active andreactive power. The obtained simulation results show the effectiveness and robustness of theproposed control strategy. Keywords: Hybrid Energetic Systems (HES), Solid Oxide Fuel Cell (SOFC),Photovoltaic (PV), Sliding Mode Control, Maximum Power Point Tracking (MPPT), Grid powermanagement.
Using mathematical models and artificial neural networks for predicting the compressive strength of concrete with steel fibers exposed to high temperatures
Authors: Hassiba Belaribi  , Mekki Mellas
Published: August 2024

In this study mathematical methods and artificial neural network (ANN) model are used to predict the compressive strength of concrete with steel fibers exposed at high temperatures. The data used in the models construction were obtained from laboratory experiments. The compressive strength was experimentally determined for specimens containing three volume fractions of steel fibers 0.19%,0.25%, 0.5% were used and two different water/cement ratios (w/c of 0.35 and 0.45). Specimens were subjected to various heating-cooling cycles from the room temperature to 200, 400, and 600°C. The inputs models of ANN were temperature, w/c, percentage of porosity, ultrasonic pulse velocity; percentage of steel fibers and percentage superplasticizer, the output was the compressive strength of concrete. Four mathematical models were development to predict the compressive strength. Three mathematical models including a number of functions to express the strength-porosity relationship, and other model used to establish the relationships between strength and ultrasonic pulse velocity. Mathematical methods, artificial neural network and their results were evaluated and compared. The results show that ANN has good potential to be used as a tool for predicting the compressive strength of concrete with steel fibers exposed to high temperatures.
Bearing capacity of a strip footing on a geosynthetic reinforced soil modular block walls after a seismic loading
Authors: Salah Zerguine  , Djamel Benmeddour  , Abdelhak Mabrouki
Published: August 2024

Geosynthetic reinforced walls are widely used in public works. The aim of this paper isto study the bearing capacity of a strip rough footing on a geosynthetic reinforced soil modularblock walls, after a seismic action. The numerical modelling was carried out by using the finiteelement method implemented in the Plaxis code. The influence of the eccentric vertical load onthe bearing capacity of footing was examined considering different distances between the top ofthe wall and the edge of the footing. The results of this study confirm that the seismic loadingdoes not affect the bearing capacity when the distance d/B is greater than 10.
Effects of Zr/Ti ratio and sintering temperature on Structural and electrical properties of PFN-PNN-PZTceramics near the morphotropic phase boundary
Authors: Loubna Ben Amor  , Ahmed Boutarfaia  , Omar Bentouila
Published: August 2024

0.05Pb[Fe1/2 Nb1/2]O3-0.05Pb[Ni1/3Nb2/3]O3-0.90Pb[ZrxTi(1-x)]O3 [PFN-PNN-PZT] quaternary piezoelectric ceramics with varying Zr/Ti ratios located near the morphotropic phase boundary (MPB) were prepared by a conventional mixed-oxide route. The samples structure was determined by X-ray diffractometry which indicate that the phase structure, of sintered PFN-PNN-PZT ceramics, was transformed from tetragonal to rhombohedral with Zr/Ti ratio increased in system. The effect of Zr/Ti ratio and sintering temperature on the structure and piezoelectric properties of our simples were investigated. The new MPB in this quaternary system with optimum piezoelectric properties was found at x = 0.51-0.53. The dependence of the piezoelectric coefficient (d31), electromechanical coupling factor (kp) and the dielectric constant (ε) on the Zr/Ti ratio shows a pronounced maximum of d31 = 141* 10-12 C/N, kp= 0.64 and ε = 850 at Zr/Ti : 51/49. As the Zr/Ti ratio increases, the Tcof PFN-PNN-PZT ceramics decreases and consequently the peak in the dielectric spectrum corresponding to the Tc moves towards room temperature. A Tc of 360 °C is obtained when Zr/Ti: 51/49.
Numerical modeling of the prestressing losses in prestressed concrete beams by modal analysis method
Authors: Hamza Djeffal  , Mohamed Nadir Amrane
Published: August 2024

In this paper, a numerical modal analysis method is carried out to investigate the effectof cable strain loss on the natural frequencies in prestressed concrete beams. A simply supportedconcrete beam is modeled using the commercial finite element code ABAQUS. The beam iscomposed of concrete and prestressing strands. Firstly, a general geometrically nonlinear staticanalysis is carried out on the beam in order to obtain the camber deflection under differentprestressing magnitudes. The obtained equilibrium configuration is then used to perform a linearand nonlinear modal analysis. Thereby, a three dimensional finite element C3D8 is used for theconcrete in combination with a damaged plasticity model (CDP) are considered. Whereas, theprestressing strands are modeled with an embedded T2D2 truss element. The obtained resultsshow a good agreement with previous numerical and experimental works in literature.Furthermore, the study showed that the safety of prestressed beams depend mainly on the levelof prestressing load.
Kontekstualisasi Musik Sape Dalam Ibadah di Gereja Kemah Injil Indonesia Kalimantan Utara
Authors: Musa Kiring
Published: August 2024

Sape adalah alat musik petik yang berasal dari suku Dayak Kalimantan. Alat musik sape berfungsi sebagai media hiburan serta mengiring tarian dalam acara ritual adat. Namun gereja cendrung tidak menggunakan musik sape dalam ibadah. Oleh sebab itu penulis akan membahas dengan topik kontekstualisasi musik sape dalam ibadah di Gereja Kemah Injil Indonesia Kalimantan Utara. Adapun tujuan dari penelitian ini yaitu untuk memberi pemahaman kepada gereja pengaruh dari penggunaan alat musik sape terhadap jemaat memberi motivasi kepada pemusik gereja untuk menggunakan musik sape dalam ibadah. Penulis menggunakan pendekatan kualitatif untuk menjawab permasalah yang ada. Tujuan dalam penelitian ini yaitu untuk mencapai data yang akuratmaka peneliti menggunakan beberapa metode atau teknik pengumpulan data, berupa metode wawancara, dan metode observasi. Penelitian ini peneliti akan melakukan penelitian kepada Gereja Kemah Injil Indonesia Kalimantan Utara tentang kontekstualisasi alat musik sape dalam ibadah.  Penelitian ini mampu memberi pemahaman kepada jemaat, hamba-hamba Tuhan tentang fungsi dan dampak dari kontekstualisasi alat musik sape dalam ibadah, sehingga jemaat senang atau bersuka cita dalam bernyanyi dan setia beribadah.
ALFABETIZAÇÃO MIDIÁTICA E FAKE NEWS: DESAFIOS E ESTRATÉGIAS NO ENSINO DE PORTUGUÊS PARA A FORMAÇÃO DE ALUNOS CRÍTICOS
Authors: Schütz Jenerton , Junior Edinaldo , da Costa Magda , Nicoletti Lidiane , Urbano Tânia , Meller Elenice , Gomes Valéria , Miranda Rosalva , de Sousa Luciana , dos Santos Ednalva
Published: August 2024

In the current context, media literacy has emerged as an essential skill for the formation of critical and well-informed citizens. This article addresses the importance of integrating this skill into the school curriculum, especially in the teaching of Portuguese. Initially, the challenges faced by educators when dealing with the vast amount of information available and the proliferation of fake news are presented. The lack of criteria for assessing the veracity of information and the influence of social networks make students vulnerable to misinformation, highlighting the urgent need for effective media education. The article then explores various didactic strategies that can be implemented in Portuguese teaching to combat disinformation. These include developing critical thinking, analyzing information sources and encouraging the production of responsible digital content. Practical activities such as news debates, fact-checking and school media projects are suggested to engage students in an active and meaningful way. Finally, the formation of critical learners as a central objective of contemporary education is discussed. Media literacy is presented not only as a complement to traditional Portuguese teaching, but as an integral component that prepares students to face the challenges of the digital age. The article concludes that by enabling students to recognize and question false information, schools play a fundamental role in promoting a more critical and informed society.
O USO DE ANTIBIÓTICOS E A PRESENÇA DE BACTÉRIAS MULTIRRESISTENTES: REVISÃO NARRATIVA
Authors:   Orientador (a): Prof°. Dr. José Rodrigues do Carmo Filho, Prado Geovana Cardoso do
Published: August 2024

Antimicrobial resistance originated by both natural processes and artificial selection. This scenario is directly associated with the inappropriate use of these medications, representing a significant concern for global, public health. Objective: To analyze the use of antibiotics and the presence of multidrug-resistant bacteria. Methods: This is a literary review of 7 articles that were researched through VHL, LILACS, MEDLINE, WPRIM Pacific Western, CUMED and Google Scholar. Results: 7 articles were included in the narrative review. The use of antibiotics, both in animals and in humans, increases the presence of antimicrobial-resistant bacteria in the community and in hospitals. Which minimizes the spectrum of efficient antibiotics on the market. Due to this, it causes an increase in the length of stay for these patients in hospitals. Conclusion: Adopt measures such as continuing education for health professionals and the public. These measures are essential to address this complex challenge and ensure the sustainable use of antibiotics for future generations.
PERFIL EPIDEMIOLÓGICO DA UROLITÍASE NO BRASIL NO PERÍODO COMPREENDIDO ENTRE 2012 A 2022
Authors: Silva José Eduardo Rivas da , Franco Laise Maria Volgran de Alencar , Araújo Luiz Eduardo Gomes , Angel Douglas José
Published: August 2024

Introduction: Urolithiasis occurs when there are one or more stones inside organs or channels of the urinary tract, from the kidney membranes to the bladder. It is a pathology that has seen a progressive increase in incidence over the years. Objective: To highlight the epidemiological profile of urolithiasis in Brazil in the period between 2012 and 2022. Method: This is a systematic review of the literature, with information collected in the electronic databases Medical Literature Analysis and Retrievel System Online (MEDLINE), National Library of Medicine (PUBMED) and Latin American and Caribbean Literature in Health Sciences (LILACS), in studies published in the period between 2012 and 2022. Results: There was a greater occurrence of nephrolithiasis among males, in adults aged between x and x years and children x to x. And it has other risk factors such as low water intake, obesity, socioeconomic vulnerability, individuals with a diet rich in sodium/protein, living in regions with a high temperature climate, history of renal lithiasis in the family and previous gastric bypass. Conclusion: It was noticed that some factors associated with nephrolithiasis are genetically determined, such as sex and family history, however, the majority of risk factors are modifiable and can be prevented, therefore demonstrating the need for the development of public policies effective measures to prevent and reduce the occurrence of this pathology.
Implementation Of Population Administration Policy (Study of Incoming Move-in Registration Residents in Katapang sub-district, Bandung Regency)
Authors: Asih Devi Sekar
Published: August 2024

This research is driven by the observed shortcomings in the effective implementation of policies related to population administration, particularly concerning the registration of migrants. The research background highlights the following identified problems:1. The inquiry into the execution of population policies in the data migration process of residents within Katapang Sub-District, Bandung Regency.2. Examination of the factors influencing and supporting the resettlement process in Katapang District, Bandung Regency.3. Evaluation of the efforts made by the Katapang District regarding the transfer of registrations from residents within the district.The research employs the policy implementation theory of George C. Edwards III, encompassing Communication, Resources, Disposition, and Bureaucratic Structure. Based on this theoretical framework, the researchers posit the following propositions: the optimal execution of the Policy on the Implementation of Population Administration involves considerations of communication, resources, disposition, and bureaucratic structure dimensions.The chosen research method is descriptive with a qualitative approach. Data is gathered through literature review, participant observation, in-depth interviews, and documentation. The findings of this study reveal suboptimal implementation of policies related to population administration, particularly in the registration of migrants by the Katapang District, Bandung Regency. Indications of this suboptimality include a lack of intensive socialization and information dissemination regarding the registration of migrant residents and insufficient human resources dedicated to facilitating the population's relocation.
Portrait of Teaching Writing in Online Classroom
Authors: Nurlina Siti Lina , Denistiani Salsa Ayu , Williyan Aldha
Published: August 2024

Nowadays, online classrooms are growing in popularity. Especially given the Covid-19 outbreak in Indonesia, which has forced online learning. This study aims to investigate online learning in EFL learners’ writing classrooms. This study uses a qualitative method and a descriptive qualitative research design to examine in detail how teachers teach EFL learners in online writing. Researchers collected data through the technique of nonparticipant observation, and the researcher "observes from the sidelines" the action being observed. The results of this study reveal that the observed teacher's teaching method is not consistent with the four reference strategies employed by the researchers. The four strategies include; building knowledge of field, modeling of text, joint construction of text, and independent construction of text. Because, after being observed, the teacher employs only one strategy to teach writing, specifically building knowledge of field.
« Le volcan est comme une vie pour nous ». Destruction, vitalité et compensation du Pico do Fogo (Cap-Vert)
Authors: Laugrand Frédéric , Simon Lionel
Published: August 2024

Dans l’archipel du Cap-Vert, situé au large du Sénégal, dans l’océan Atlantique, sur l’île de Fogo, de multiples petits volcans sont entrés en éruption au cours des derniers siècles, provoquant leurs lots de destructions. Les populations créoles qui vivent au contact du Pico de Fogo ont développé une relation ambivalente avec leur volcan qui offre des opportunités exceptionnelles, en particulier pour le tourisme et les activités agricoles dans un archipel où l’accès à l’eau reste le plus grand défi. Bien que la dernière éruption de 2014 ait détruit leurs maisons, certaines familles ont décidé de revenir vivre au pied du volcan, profitant des ressources financières qu’il procure. À travers les notions de vitalité et de compensation, sont ici examinés les mécanismes de résilience et les stratégies de subsistance qui accompagnent les retours des habitants de Chã aux abords du Pico do Fogo.
Quand l’éruption ne fait pas irruption : rapport aux dangers sur le volcan Stromboli
Authors: Pierre Martin
Published: August 2024

Stromboli, petite île de la mer Tyrrhénienne abritant l’un des volcans les plus actifs de la planète, est la terre d’une communauté d’insulaires, les Strombolani. Ces derniers, par de complexes processus mentaux et d’ajustement, parviennent à faire de cet endroit – pourtant considéré par certains comme particulièrement exposé à divers risques géologiques – un lieu de vie où le volcan, plus qu’une inspiration de la mort, symbolise la respiration d’une Terre vivante. Par une inversion de leur point de vue, ils nous offrent un aperçu des processus d’appropriation du risque mortifère, en l’occurrence volcanique, pour créer un quotidien apaisé.
Le pouvoir et les écueils de la communication dans l’expérience de la souffrance des hommes âgés atteints d’un cancer incurable
Authors: Bourgeois-Guérin Valérie , Cormier Émilie , Lavoie David , Côté Andréanne , Wallach Isabelle , Morin Jonathan , Poulin Gabrielle , Van Pevenage Isabelle , Sussman Tamara , Durivage Patrick
Published: August 2024

Parmi les personnes âgées atteintes d’un cancer incurable, les hommes auraient moins tendance à aller chercher du soutien pour leurs souffrances. Or, être atteint d’une maladie à issue fatale provoque souvent maintes souffrances psychologiques. Que connait-on des souffrances vécues par les hommes âgés atteints d’un cancer incurable (HACI)? Dans cet article, nous présentons les résultats d’une étude qualitative réalisée auprès de 17 HACI, portant sur leurs souffrances et la communication. Les résultats dévoilent que la souffrance peut se lier à ce que ces hommes se font dire, ce qu’ils souhaitent dire et ce qu’ils peuvent dire. Les limites de la parole et comment la transmission peut être envisagée comme autre manière de communiquer seront aussi abordés.
« Une plaie douloureuse » : l’expérience d’enfants adultes ayant perdu par suicide une mère ou un père âgé entre 50 et 64 ans
Authors: Michaud Dumont Gabrielle , Lapierre Sylvie , Viau-Quesnel Charles
Published: August 2024

Au Québec, les personnes âgées entre 50 et 64 ans sont le groupe le plus à risque de suicide. Toutefois, peu d’études se sont intéressées spécifiquement aux impacts du suicide d’un parent de ce groupe d’âge sur leurs enfants. Pourtant, les personnes endeuillées par un suicide familial présentent des risques importants de poser le même geste. L’objectif de la présente étude qualitative est d’identifier ce qui caractérise l’expérience des endeuillés par suicide d’un parent âgé entre 50 et 64 ans. Les participants (n = 14) étaient âgés en moyenne de 23 ans (entre 10 et 34 ans) au moment de la perte. L’analyse thématique des entretiens semi-structurés a révélé 5 thèmes principaux : (1) le choc et la désorganisation; (2) l’adaptation et les changements; (3) la transmission intergénérationnelle du suicide; (4) les défis sociaux; et (5) la perception du vieillissement et l’aide médicale à mourir comme solution. Les résultats soulignent que les participants sont aux prises avec les mêmes enjeux que tous les endeuillés par suicide, mais qu’ils sont préoccupés par la transmission intergénérationnelle du suicide. De plus, il semble que la perception négative du vieillissement soit un thème unique au deuil par suicide d’un parent de ce groupe d’âge. En effet, plusieurs endeuillés envisageraient l’aide médicale à mourir comme solution potentielle aux problèmes de l’avancement en âge.
Pano Klimalarında Farklı Soğutucu Akışkan Kullanımının Analizi
Authors: Yilmaz Berke , Onat Ayhan
Published: August 2024

Çalışma sürecinde, küresel beklenti ve taleplerin sürekli değişerek güncellendiği iklimlendirme sistemlerindeki soğutucu akışkan kullanımı çevresel ve termal faktörlerce irdelenerek değerlendirme sonuçları ortaya konulmuştur.Çalışmada kıyas elde edebilmek amacıyla pazardaki en büyük paya sahip soğutucu akışkanlardan R134a ve R404A’nın yanında; bu soğutucu akışkanlar ile aynı aileden, ozonu aşındırma potansiyeli (ODP) ve küresel ısınma potansiyeli bakımından (GWP) çevre etkileri en az olarak görünenlerden R32 soğutucu akışkanı ile beraber günümüzde kazandığı ivme ile gelecektede kullanımından söz ettirmesi beklenen halojen içermeyen doğal soğutucu akışkanlar grubunda nitelendirilen ve olumlu çevresel etkileri ile öne çıkan R290 soğutucu akışkanları ele alınmış, her bir soğutucu akışkan için benzer soğutma kapasitesi sağlayacak şekilde pano kliması özelinde analitik termal tasarımlar yapılmış ve tüm parametreler genel bir kıyasa tabi tutulmuştur.Farklı çevresel ve termofiziksel etkiler barındıran akışkanların değerlendirilmesi ile aradaki farkların açıkça ortaya konulabilmesi hedeflenmiştir.
Çalışmada detaylı sistem tasarımları matematiksel ve pratik kuramlar ile gerçekleştirilmiş, diğer muadiller ile çevre, enerji, sürdürülebilirlik, işletim, verimlilik, güvenlik, konularında analizler yapılarak kapsamlı bir çerçeve oluşturulması amaçlanmıştır. Sistemlerin termal performans değerlendirmesinde ölçüt olarak alınan ve matematiksel olarak sunulan; ısı eşanjörü verimliliği, kompresör hacimsel verimi ve sıkıştırma oranları, sistemlerin genel enerji tüketimleri, enerji ve ekserji verimlilik analizlerinin her birinde R290 ve R32 soğutucu akışkanlarının diğer iki soğutucu akışkana karşı avantajı ortaya konulmuştur. R290 ve R32 soğutucu akışkanlarının sahip olduğu bu termal performans avantajlarının yanına, 〖CO〗_2 eşdeğeri şarj miktarı analizi ile değerlendirilen çevresel etkiler bakımından da avantajları eklenerek tüm analizlerde başta halojen içermeyen doğal soğutucu akışkan grubu üyesi R290 olmak üzere R290 ve R32 soğutucu akışkanlarının önde olduğu tespit edilerek sunulmuştur.Bu çalışmanın ele aldığı ürün gamından yola çıkıp daha yüksek oranlarda kullanım ile çevresel faktörler ve iklim değişikliği konularına dikkat çekmesi hedeflenmektedir.
Exploring the Dutch Bruynzeel Kitchen Through the Negotiations of Its Two Designers, Limperg and Zwart
Authors: Geerinckx Selin , De Vos Els
Published: August 2024

During the interwar period, numerous endeavours were made to develop a rational kitchen, also called a laboratory kitchen, namely one that prioritised labour-saving efficiency through thoughtful layout and design. Catherine Beecher's work is often credited as its starting point. By synthesising household reformers' experiences and architects’ design expertise, scholars have extensively examined how rational kitchens evolved. This paper discusses the conception of the standardised Dutch Bruynzeel Kitchen (1938) by the collaborative efforts of two designers with distinct yet complementary interior design profiles. Renowned Dutch designer Piet Zwart, widely recognised for his contributions, finalised the technical drawings and promotional materials for this iconic kitchen. Less acknowledged is the early involvement of Dutch architect Koen Limperg, son of a business economics professor, who drew the preliminary designs. Interestingly, this kitchen design was developed while body culture emerged in the Netherlands. Complementing already existing research from art history, anthropology, the history of technology, and gender studies, this paper, based on literature and archive research, investigates through an interior design lens how both designers integrated their respective practices and expertise into the Bruynzeel Kitchen's design, incorporating elements of physical activities (dance, gym, sports) and household economics.
Sigh generation in preBötzinger Complex
Authors: Cui Yan , Bondarenko Evgeny , Perez Carolina Thörn , Chiu Delia N , Feldman Jack L
Published: August 2024

We explored neural mechanisms underlying sighing. Photostimulation of parafacial (pF) neuromedin B
(
NMB) or gastrin releasing peptide (GRP), or preBötzinger Complex (preBötC) NMBR or GRPR neurons elicited ectopic sighs with latency inversely related to time from preceding endogenous sigh. Of particular note, ectopic sighs could be produced without involvement of these peptides or their receptors in preBötC. Moreover, chemogenetic or optogenetic activation of preBötC SST neurons induced sighing, even in the presence of NMBR and/or GRPR antagonists. We propose that an increase in the excitability of preBötC NMBR or GRPR neurons not requiring activation of their peptide receptors activates partially overlapping pathways to generate sighs, and that preBötC SST neurons are a downstream element in the sigh generation circuit that converts normal breaths into sighs.
Multidimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Authors: Wang Ming-Qiang , Guo Shi-Kun , Guo Peng-Fei , Yang Juan-Juan , Chen Guo-Ai , Chesters Douglas , Orr Michael C , Niu Ze-Qing , Staab Michael , Chen Jing-Ting , Li Yi , Zhou Qing-Song , Fornoff Felix , Shi Xiaoyu , Li Shan , Martini Massimo , Klein Alexandra-Maria , Schuldt Andreas , Liu Xiaojuan , Ma Keping , Bruelheide Helge , Luo Arong , Zhu Chao-Dong
Published: August 2024

Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic factors, including plant species richness, overall community phylogenetic and functional composition of consumers, and abiotic factors such as microclimate, determine host-parasitoid network structure and host-parasitoid community dynamics. To address this, we leveraged a 5-year dataset of trap-nesting bees and wasps and their parasitoids collected in a highly controlled, large-scale subtropical tree biodiversity experiment. We tested for effects of tree species richness, tree phylogenetic, and functional diversity, and species and phylogenetic composition on species and phylogenetic diversity of both host and parasitoid communities and the composition of their interaction networks. We show that multiple components of tree diversity and canopy cover impacted both, species and phylogenetic composition of hosts and parasitoids. Generally, phylogenetic associations between hosts and parasitoids reflected nonrandomly structured interactions between phylogenetic trees of hosts and parasitoids. Further, host-parasitoid network structure was influenced by tree species richness, tree phylogenetic diversity, and canopy cover. Our study indicates that the composition of higher trophic levels and corresponding interaction networks are determined by plant diversity and canopy cover, especially via trophic links in species-rich ecosystems.
Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Authors: Wang Ming-Qiang , Guo Shi-Kun , Guo Peng-Fei , Yang Juan-Juan , Chen Guo-Ai , Chesters Douglas , Orr Michael , Niu Ze-Qing , Staab Michael , Chen Jing-Ting , Li Yi , Zhou Qing-Song , Fornoff Felix , Shi Xiaoyu , Li Shan , Martini Massimo , Klein Alexandra-Maria , Schuldt Andreas , Liu Xiaojuan , Ma Keping , Bruelheide Helge , Luo Arong , Zhu Chao-Dong
Published: August 2024

Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic factors, including plant diversity, tree identity, genetic diversity, overall community composition of higher trophic levels, and abiotic factors such as microclimate, interact to determine host–parasitoid network structure and host–parasitoid community dynamics. To address this, we leveraged a five-year dataset of trap-nesting bees and wasps and their parasitoids collected in a highly-controlled, large-scale subtropical tree biodiversity experiment. We tested for effects of tree species richness, tree phylogenetic and functional diversity, and taxonomic and phylogenetic composition on taxonomic, phylogenetic, and network composition of both host and parasitoid communities. We show that multiple components of tree diversity, tree composition, and canopy cover impacted both, taxonomic and phylogenetic composition of hosts and parasitoids. Generally, top-down control was stronger than bottom-up control via phylogenetic association between hosts and parasitoids, reflecting non-randomly structured interactions between phylogenetic trees of hosts and parasitoids. Further, host-parasitoid network structure was influenced by tree species richness, tree phylogenetic diversity, and canopy cover. Our study indicates that the composition of higher trophic levels and corresponding interaction networks are determined by habitat structure and heterogeneity, which is maintained by trees and especially via phylogenetic links in species-rich ecosystems.
Key determinants of the dual clamp/activator function of Complexin
Authors: Makke Mazen , Pastor Ruiz Alejandro , Yarzagaray Antonio , Gaya Surya , Zimmer Michelle , Frisch Walentina , Bruns Dieter
Published: August 2024

Complexin determines magnitude and kinetics of synchronized secretion, but the underlying molecular mechanisms remained unclear. Here, we show that the hydrophobic face of the amphipathic helix at the C-terminus of Complexin II (CpxII, amino acids 115-134) binds to fusion-promoting SNARE proteins, prevents premature secretion and allows vesicles to accumulate in a release-ready state. Specifically, we demonstrate that an unrelated amphipathic helix functionally substitutes for the CTD of CpxII and that amino acid substitutions on the hydrophobic side compromise the arrest of the prefusion intermediate. To facilitate synchronous vesicle fusion, the N-terminal domain (NTD) of CpxII (amino acids 1-27) specifically cooperates with synaptotagmin I, but not with synaptotagmin VII. Expression of CpxII rescues the slow release kinetics of the Ca
2+
-binding mutant SytI R233Q, whereas the N-terminally truncated variant of CpxII further delays it. These results indicate that the CpxII NTD regulates mechanisms which are governed by the forward rate of Ca
2+
binding to SytI. Overall, our results shed new light on key molecular properties of CpxII that hinder premature exocytosis and accelerate synchronous exocytosis.
Sexual Dimorphism in Age-Dependent Neurodegeneration After Mild Head Trauma in Drosophila: Unveiling the Adverse Impact of Female Reproductive Signaling
Authors: Ye Changtian , Ho Ryan , Moberg Kenneth H , Zheng James Q
Published: August 2024

Environmental insults, including mild head trauma, significantly increase the risk of neurodegeneration. However, it remains challenging to establish a causative connection between early-life exposure to mild head trauma and late-life emergence of neurodegenerative deficits, nor do we know how sex and age compound the outcome. Using a
Drosophila
model, we demonstrate that exposure to mild head trauma causes neurodegenerative conditions that emerge late in life and disproportionately affect females. Increasing age-at-injury further exacerbates this effect in a sexually dimorphic manner. We further identify Sex Peptide (SP) signaling as a key factor in female susceptibility to post-injury brain deficits. RNA sequencing highlights a reduction in innate immune defense transcripts specifically in mated females during late life. Our findings establish a causal relationship between early head trauma and late-life neurodegeneration, emphasizing sex differences in injury response and the impact of age-at-injury. Finally, our findings reveal that reproductive signaling adversely impacts female response to mild head insults and elevates vulnerability to late-life neurodegeneration.
Wnt signaling dosage controlled by a Ctnnb1 enhancer balances homeostasis and tumorigenesis of intestinal epithelia
Authors: Hua Xiaojiao , Zhao Chen , Tian Jianbo , Wang Junbao , Miao Xiaoping , Zheng Gen , Wu Min , Ye Mei , Liu Ying , Zhou Yan
Published: August 2024

The β-catenin-dependent canonical Wnt signaling is pivotal in organ development, tissue homeostasis, and cancer. Here we identified an upstream enhancer of
Ctnnb1
, named ieCtnnb1, that is crucial for intestinal homeostasis. ieCtnnb1 is predominantly active in the base of small intestinal crypts and throughout the epithelia of large intestine. Knockout of ieCtnnb1 led to a reduction in
Ctnnb1
transcription, compromising the canonical Wnt signaling in intestinal crypts. Single-cell sequencing revealed that ieCtnnb1 knockout altered epithelial compositions and potentially compromised functions of small intestinal crypts. While deletion of ieCtnnb1 hampered epithelial turnovers in physiologic conditions, it prevented occurrence and progression of Wnt/β- catenin-driven colorectal cancers. Human ieCTNNB1 drove reporter gene expression in a pattern highly similar to mouse ieCtnnb1. ieCTNNB1 contains a single-nucleotide polymorphism associated with
CTNNB1
expression levels in human gastrointestinal epithelia. The enhancer activity of ieCTNNB1 in colorectal cancer tissues was stronger than that in adjacent normal tissues. HNF4α and phosphorylated CREB1 were identified as key trans-factors binding to ieCTNNB1 and regulating
CTNNB1
transcription. Together, these findings unveil an enhancer-dependent mechanism controlling the dosage of Wnt signaling and homeostasis in intestinal epithelia.
An Atypical Midline Anterior Torus Mandibularis: A Case Report
Authors: Behera Ranjan Rashmi , Jalaluddin Mohammad , Panda Bandana
Published: August 2024

Benign bony growths called tori can develop in various places throughout the mandible and maxilla, although their exact origin is still unknown. There have been numerous reports of unilateral or bilateral Mandibular Tori (MT); however, no reports of a midline anterior mandibular tori have been made yet. A 27-year-old female patient reported with a complaint of a bony growth on her lower jaw below the tongue. The tori are unusually situated at the midline on the lingual side of the mandibular central incisor. The elements shown to be causal were the gender of the male, the ethnicity of Asians, and developmental in origin. The cornerstone of treatment for Tori is surgical resection. After a year of follow-up, there was no recurrence. The present case highlighted the significance of etiological factors for bony exostosis management and recurrence, which, in conjunction with origin, gender, ethnic and racial factors, may account for the patient’s lack of recurrence.
Pineapple Production and Its Marketing Channels in Bangladesh: Present Status, Prospects and Challenges
Authors: Hasan Shahriar , Afrad Md. Safiul Islam , Islam Md. Riazul , Saha Soumitra , Choudhury Jayanta
Published: August 2024

Pineapple production offers a unique opportunity for the farmers due to the favorable climatic conditions in Bangladesh. Consequently, pineapple cultivation in Bangladesh round the year, has picked up on quite a large scale. The nutritional condition of Bangladeshi individuals who are severely malnourished may be improved by pineapple. Pineapple cultivation is trending upward. Producing pineapples on the same site benefits farmers significantly more than growing other crops. Also, high return in comparison to other existing crops, easy cultivation process, possibility of intercropping, favorable weather condition are the main reasons behind its increasing production. Growing demand for chemical-free farm fresh pineapples among consumers has led farmers to pursue balanced use of pesticides and ripening agents. However, the demand for fertilizers and other chemicals has been increasing. Despite the fact that farming has grown highly lucrative, there are apparently many marketing and production related challenges that farmers must overcome. It is necessary to enhance Bangladesh's pineapple production and marketing system for the benefit of both producers and consumers, as it is ineffective and disorganized. Policymakers, extension agents, researchers and other actively involved marketing professionals should provide feedback to enhance their approach for raising future fair pricing by increasing production and marketing effectiveness. Infrastructure and technological investments, marketing channel diversification, farmer capacity building, supportive legislative reforms and enhanced market intelligence systems to boost competitiveness should all be included in sustainable pineapple farming methods, which can make pineapple farming more profitable.
The Influence of Academic Stress, Lecturer Competence, Campus Facilities, and Learning Environment on Student Cyberloafing Behavior in Purwokerto
Authors: Majid Duta Fahrezy Asdhiansyah , Darmawan Akhmad , Suyoto  , Haryanto Totok
Published: August 2024

Objective: This study aims to determine empirically whether academic stress, lecturer competence, campus facilities and learning environment affect cyberloafing behavior in students in Purwokerto.
Type of Research: This type of research is quantitative research. The sampling technique used proportional random sampling technique with the condition that students of universities in Purwokerto include UMP, Unsoed, UIN Saizu, and Telkom and must bring gadgets during lectures.
Place and Time of Research: The research was conducted in Purwokerto from 10 december 2022 to 5 july 2024.
Methodology: This research is conducted using a quantitative approach, the data obtained will be processed using SmartPLS software version 3.29. Each hypothesis will be tested using the Inner Model to determine the influence between variables. To test the validity and reliability of the research using the Outer model.
Results: The results showed that there is a positive and significant influence between academic stress on cyberloafing behavior, a negative and significant influence between lecturer competence and cyberloafing, a negative but not significant influence on campus facilities and cyberloafing and a positive but not significant influence on the learning environment on cyberloafing behavior.
Spatio Temporal Distribution of SST and Chlorophyll a in WPP 718 Waters during the West Season: A Case Study of Merauke Regency Waters, Indonesia
Authors: Apriliani Izza Mahdiana , Dewanti Lantun Paradhita , Putra Pringgo Kusuma Dwi Noor Yadi , Rokhim Irvan Nur
Published: August 2024

Sea surface temperature (SST) and chlorophyll-a are critical factors for determining oceanographic conditions in water bodies. This research aims to analyze the spatial and temporal distribution of these parameters in the waters of the Merauke region using remote sensing technology. Descriptive methods and remote sensing techniques were used to collect and analyze data from Aqua-MODIS satellite images from December 2022 to February 2023. The results indicate that the waters of Merauke Regency are fertile and warm, with the highest surface temperature recorded in December 2022 (25.0 - 30.0 Celsius). C) and the lowest in January 2023 (25.0 – 28.0 degrees Celsius). Chlorophyll-a concentrations peaked in December 2022 (0.26-5 mg/m3) and were lowest in February 2023 (0.2-2 mg/m3). These results provide valuable insights for fisheries management and environmental monitoring, aiding in the sustainable use of marine.
Detection of Aerobic Bacterial Species Causing Pneumonia in Sheep and Goats and their Susceptibility to Antibiotics in Sudan
Authors: A. M Abeer , E. A Muna , I. A Afaf
Published: August 2024

Aims: This study was conducted in Khartoum and Gezira States slaughterhouses to investigate the bacterial spp. associated with pneumonia in condemned sheep and goat lungs.
Study Design: A total of 2085 animals were examined grossly for respiratory lesions (sheep= 1601 and goats= 484).
Place and Duration of Study: Khartoum and Gezira States slaughterhouses during different seasons, from 2018-2020 and conducted in Central Veterinary Research Laboratory, Sudan.
Methodology: Bacterial spp. were isolated and identified using analytical profile index strips then more characterization done using Polymerase chain reaction for representative 20 selected isolates and finally antimicrobial susceptibility test was performed.
Results: Out of 320 pneumonic lung samples, 116 samples showed pure colonies and 41 were mixed culture while 163 revealed no bacterial growth. The main bacteria isolated were Staphylococcus aureus, Escherichia coli, Pasteurella multocida, Mannheimia haemolytica, Streptococcus spp. Corynebacterium spp. Pseudomonas spp. Staph spp. and Bacillus spp. Twenty representative bacterial isolates examined by PCR technique 10 were Staph aureus and 10 were   E. coli to confirm identification. Seven of each were found positive. The Gram-positive bacteria resulted in 41 resistant isolates, 21 intermediate and 141 sensitive to different antibiotics. Ten bacterial species were reported resistant for more than two Antibiotics from different classes mainly tetracycline, methicillin, penicillin and erythromycin. The Gram-negative bacteria resulted in 59 were resistant, 13 intermediate and 108 sensitive to antibiotics. Seventeen of them were multidrug resistance to tetracycline, gentamicin, Imipenem and ceftriaxone.
Conclusion: It was concluded that bacteria could be the main cause responsible for pneumonia in sheep and goats, some of these bacterial isolates were resistance to several Antibiotic which have an impact on public health.