bluuebunny/crossref_metadata_2025 huggingface dataset:
L'archange Michel et le démon de la flèche de l'Hôtel de Ville. Une girouette médiévale exceptionnelle
Authors: Anagnostopoulos Pierre
Published: November 2023

Parmi les œuvres sculptées du Moyen Âge de premier plan conservées à Bruxelles figure incontestablement la girouette de la flèche de l'Hôtel de Ville. Une récente analyse des sources écrites, documentaires et matérielles de cette œuvre de laiton nous amène à proposer de nouvelles interprétations quant à son histoire, à mettre en lumière ses restaurations multiples, et à tenter de comprendre son processus de création.avec l'appui d'images originales et de sources écrites des xv e au xix e siècles, nous avons pu montrer toute l'importance de cette œuvre pour les contemporains témoins de sa réalisation, toujours renouvelée d'une génération à l'autre, dans des contextes historiques différents.
Brussels Town Hall in context. Architectural models, historical background, political strategies
Authors: Köhl Sascha
Published: November 2023

L’Hôtel de Ville de Bruxelles est un édifice étonnant – à tous points de vue : son ampleur, sa splendeur architecturale et la richesse de son imagerie (dont la majeure partie a disparu aujourd’hui). Cet article explore la qualité et le statut exceptionnel de l’Hôtel de Ville de Bruxelles en esquissant le contexte historique dans lequel le projet de construction vit le jour, et les défis politiques auxquels l’édifice et son imagerie ont répondu. L’Hôtel de Ville de Bruxelles y est également comparé à plusieurs hôtels de ville gothiques de la même époque (ou un peu plus anciens) construits dans le nord-ouest de l’Europe, qui partagent avec lui plusieurs caractéristiques d’édification et se rapprochent le plus de ses ambitions architecturales : en l’occurrence les hôtels de ville d’Aix-la-Chapelle, Bruges et Louvain. On raconte que ces édifices avaient pour but de refléter le rôle central joué par une ville dans un état monarchique. L’Hôtel de Ville de Bruxelles apparaît donc comme une manifestation monumentale du statut de la ville au titre de « caput Brabantiae » (capitale du Brabant) en ces temps incertains résultant de l’unification des Pays-Bas par les ducs de Bourgogne à la fin du xiv e siècle.
MRChexNet: Multi-modal bridge and relational learning for thoracic disease recognition in chest X-rays
Authors: Wang Guoli , Wang Pingping , Cong Jinyu , Wei Benzheng
Published: November 2023

While diagnosing multiple lesion regions in chest X-ray (CXR) images, radiologists usually apply pathological relationships in medicine before making decisions. Therefore, a comprehensive analysis of labeling relationships in different data modes is essential to improve the recognition performance of the model. However, most automated CXR diagnostic methods that consider pathological relationships treat different data modalities as independent learning objects, ignoring the alignment of pathological relationships among different data modalities. In addition, some methods that use undirected graphs to model pathological relationships ignore the directed information, making it difficult to model all pathological relationships accurately. In this paper, we propose a novel multi-label CXR classification model called MRChexNet that consists of three modules: a representation learning module (RLM), a multi-modal bridge module (MBM) and a pathology graph learning module (PGL). RLM captures specific pathological features at the image level. MBM performs cross-modal alignment of pathology relationships in different data modalities. PGL models directed relationships between disease occurrences as directed graphs. Finally, the designed graph learning block in PGL performs the integrated learning of pathology relationships in different data modalities. We evaluated MRChexNet on two large-scale CXR datasets (ChestX-Ray14 and CheXpert) and achieved state-of-the-art performance. The mean area under the curve (AUC) scores for the 14 pathologies were 0.8503 (ChestX-Ray14) and 0.8649 (CheXpert). MRChexNet effectively aligns pathology relationships in different modalities and learns more detailed correlations between pathologies. It demonstrates high accuracy and generalization compared to competing approaches. MRChexNet can contribute to thoracic disease recognition in CXR.
Association Between Parental BMI and Offspring’s Blood Pressure by Mediation Analysis: A Study Using Data From the Korean National Health and Nutrition Examination Survey
Authors: Choi Hyowon , Lee Hunju , Ahn Yeon-Soon
Published: November 2023

Objectives: This study analyzed the relationship between parental body mass index (BMI; BMI_p) and hypertension in their adolescent offspring (HTN_a), focusing on the mediating effect of adolescents’ BMI (BMI_a).Methods: Utilizing data from the Korea National Health and Nutrition Examination Survey, including participants aged 12-18, we conducted a mediation analysis while controlling for confounding factors such as age, sex, physical activity, dietary habits, household income quartile, and parents’ alcohol and smoking habits.Results: The study included a total of 5731 participants, of whom 3381 and 5455 participants had data on fathers’ and mothers’ BMI, respectively. For adolescent systolic blood pressure (SBP_a), the father’s BMI (BMI_f) had a significant total effect (β, 0.23; 95% confidence interval [CI], 0.12 to 0.34) and average controlled mediated effect (ACME) (β, 0.27; 95% CI, 0.23 to 0.32), but the average direct effect (ADE) was not significant. The mother’s BMI (BMI_m) had a significant total effect (β, 0.17; 95% CI, 0.09 to 0.25), ACME (β, 0.25; 95% CI, 0.22 to 0.28) and ADE (β, -0.08; 95% CI, -0.16 to 0.00). For adolescent diastolic blood pressure, both BMI_f and BMI_m had significant ACMEs (β, 0.10; 95% CI, 0.08 to 0.12 and β, 0.09; 95% CI, 0.07 to 0.12, respectively), BMI_m had a significant ADE (β, -0.09; 95% CI, -0.16 to -0.02) but BMI_f had an insignificant ADE and total effect.Conclusions: The study found that parental BMI had a significant effect on SBP_a, mediated through BMI_a. Therefore, a high BMI in parents could be a risk factor, mediated through BMI_a, for systolic hypertension in adolescents, necessitating appropriate management.
Garaje en Los Angeles
Authors: Martin Albert C.
Published: November 2023

Se ha tratado de conseguir un espacioso local de aparcamiento^ en tres niveles, con fáciles accesos y rampas de subida y bajada de unos 10°. Esta labor ha sido llevada a cabo por ALBERT C. MARTIN and ASSOC'S, adoptando una estructura convencional, que puede apreciarse en los esquemas adjuntos.
Hormigón aireado en obra
Authors: Jiménez Montoya P.
Published: November 2023

Siendo cada vez mayor el uso de los hormigones aireados, creemos de mucha utilidad el divulgar sus características y dosificación. En el presente trabajo se han recogido una serie de datos interesantes sobre las propiedades más importantes de estos hormigones, deducidos de las experiencias de varios Laboratorios, así como se dan normas y datos concretos para su dosificación, confección y utilización. El aire ocluido, considerado como el quinto ingrediente del hormigón, ha venido a revolucionar la técnica del hormigón, ampliando su campo de aplicación y haciendo posible la confección de hormigones con más capacidad de duración, más trabajables y a veces también más económicos.
Puente sobre el río Amstel, en Amsterdam
Authors: Janssonius M. G. F.
Published: November 2023

No disponible
Possibilities of Using Concrete and Brick Recyclate as a Substitute for Natural Aggregates
Authors: Hela Rudolf , Křížová Klára
Published: November 2023

The circular economy is currently a highly discussed topic in many areas of production, due to the potential scarcity of natural resources. In the construction sector, it is often associated in the first place with the high shortages of natural aggregates for the production of concrete. To produce concretes up to strength classes C 30/37, the partial or complete replacement of natural aggregates by concrete or brick crushed recyclates in the 4/22 mm fraction can be used very efficiently and safely. This paper will show the current legislative limitations for the use of recyclates as aggregates for concrete production, the possibilities of their use when limiting the degrees of environmental influence or physico-mechanical parameters. In both cases of strength classes C 16/10 and C 30/37, a decrease in compressive strength of 16% was observed with replacement of coarse natural aggregate. The results of physico-mechanical properties of different formulations experimentally and practically verified will be shown and the areas of their safe use will be discussed.
Severe Plastic Deformation of Nanocrystalline AZ61 Magnesium Alloy Composites Prepared by Spark Plasma Sintering Technique
Authors: Mansoor P. , Dasharath S.M.
Published: November 2023

This study examines the mechanical and microstructural characteristics of magnesium nanocrystalline (nc) AZ61 alloy, which is produced using the SPS and mechanical milling processes. The results are presented and discussed. Using optical microscopy, it has been shown that the powders underwent twining, and after eight hours of milling, the subgrain boundaries developed, defining the grains with a nanometer size of 60 nm. The AZ61 alloy was sintered by spark plasma sintering at temperatures between 4650 to 5650 degrees Celsius. It has been noted that the grains in pure magnesium magnesium AZ61 alloys are uniformly dispersed, have few pores, and have particle boundaries throughout the SPS process. The mechanical parameters of the AZ61 alloy, namely hardness, compressive strength, and corrosion resistance, increase with increasing sintering temperature by approximately 725MPa, 298 MPa, and 0.18 mm.y-1.
A Study on Grain Refinement of Aluminum Alloys by Adding Grain Refiners and Severe Plastic Deformation: A Review
Authors: Mohan Raju S. , Ramesha C.M. , Anilkumar T. , Krishna S. , Appaiah S. , Rajendra P.
Published: November 2023

In the past few decades Aluminium alloys have been extensively used in most of the structural applications, where there is a need to reduce weight and substantially providing structural strength and stability to the assembly. Aluminium alloys or Titanium alloys are the best possible options for the design engineers to select over alloy steel for structural applications when mass reduction is an important factor, However Aluminium alloys wins the race over Titanium alloys when cost is an important criteria for selection of materials. Aluminium alloys are chosen as an alternative next to titanium alloys when it comes to high strength to weight ratio. Titanium alloys particularly Ti6Al4V is selected for applications where the component is loaded with high temperature. Therefore engineers have to evaluate the loading conditions and its environment based on the properties of alloys for selection of Aluminium alloys over other alloys for structural applications. Material selection for the structural applications in various industries such as aerospace, automotive, Industrial and construction sector are based on its function, which depends on the factors like the loading conditions, environment, and functional requirements. The main strength requirements for structural applications are its mechanical properties namely Tensile strength either compressive or tensile load, The present review is to study and understand the characteristics of Aluminium alloys and ways to enhance the mechanical properties of Aluminium alloys.
Plastics Degradation Process within a Controlled Aqueous Laboratory Setting
Authors: Brožová Kateřina , Halfar Jan , Placová Karla , Drabinová Silvie
Published: November 2023

Following the growing interest in monitoring the status, behavior and impact of micropollutants in the environment, a significant area of concern revolves around the degradation of plastics, which is closely associated with a range of environmental risks. The long-term goal is to investigate the degradation process of plastics in an aqueous environment within controlled laboratory settings and analyze the status of degraded particles over a specific period. The proposed methodology, which is the subject of this paper, aims to achieve this objective. Over the period of one year, both conventional and biodegradable plastics are subjected to the combined effects of UV radiation and water motion. This paper presents the design of laboratory setting and experimental setup for conducting the degradation process. Based on its implementation, the degradation process is evaluated including weight loss and conducting microscopic and FTIR analysis of microplastic particles (MP). By gaining a better comprehension of these processes, we expect to be able to effectively mitigate the adverse environmental consequences caused by plastics.
Study and Comparative Analysis of Tribological Properties of Copper-Based Alloys Produced by Die Casting Method
Authors: Siddaraju C. , Ranganatha R. , Nagesh S.N. , Shivukumara B. , Balasubramanya H.S.
Published: November 2023

This project aims to investigate and compare the tribological properties of copper-based alloys produced by the die-casting method. Tribological properties, such as wear resistance and frictional behavior, play a crucial role in determining the suitability of materials for various engineering applications. Copper has many useful properties, such as high thermal and electrical conductivity, corrosion resistance, and antibacterial properties. It is used in a variety of industries, including electrical and electronics, construction, transportation, and healthcare. The study involves conducting wear tests on various copper-based alloys using a linear reciprocating tribometer. These tests were performed under different loading conditions (5N, 10N, and 15N), varied time durations (5 min, 15 min, and 30 min), Wear rates and morphologies of the specimens were determined by SEM. The effect of composition, microstructure, and hardness on the wear behavior of copper-based alloys has been carried out. The correlation between hardness and wear resistance was analyzed. The findings of this study could provide valuable information for the selection and optimization of copper-based alloys for trigolocal applications. The copper alloys has been characterized by an optical microscope, scanning electron microscope, and Energy dispersive X-ray analysis was used to analyze the wear surfaces.
Study of Pozzolanic Activity of Selected Waste Materials
Authors: Eštoková Adriana , Holosova Miriama
Published: November 2023

Wastes from various industrial processes are used in the construction industry in the production of cement composites, for example as a replacement for part of the cement. In addition to contributing to promoting circularity and reducing the carbon footprint, several waste materials have properties that promote improved durability of the resulting composites due to their pozzolanic properties. This paper deals with testing of the pozzolanic activity of selected wastes from local manufacturing processes such as slag, zeolite, microsilica and fly ash using the thermal analysis method (TG/DSC). The highest pozzolanic activity after 2 days was observed for blast furnace slag, however, after 56 days it was recorded for fly ash and ladle slag. Blas furnace slag and microsilica showed very similar pozzolanic activities evaluated by a comparable amount of unreacted calcium oxide of about 35%.
Healthy Work Environment Standards in Tele–Critical Care Nursing
Authors: Williams Lisa-Mae , Carpenter Dawn , Mercier Marie , Reynolds Erin , Davis Theresa
Published: November 2023

The COVID-19 pandemic exacerbated staffing challenges in intensive care units, with increased burnout and moral distress cited as major problems. A healthy work environment is critical to nurses’ success and wellbeing. During the pandemic, a survey by the American Association of Critical-Care Nurses revealed decreased composite scores in each of the 6 critical elements of a healthy work environment. Hospital units that improved even 1 critical element reported higher job satisfaction. The use of telehealth tools by expert nurses expanded care delivery during the pandemic by improving response to acutely and critically ill patients while supporting hospital-based nurses. All of the critical elements of a healthy work environment are relevant to the tele–critical care nurse’s role and challenges. This article describes how tele–critical care nurses were affected by the pandemic and how healthy work environment strategies promoted successful nurse and patient outcomes.
Vascular structure and stiffness in pediatric Mulibrey nanism using ultra-high frequency ultrasound
Authors: Sarkola Taisto , Lipsanen-Nyman Marita , Jalanko Hannu , Jokinen Eero
Published: November 2023

Mulibrey nanism (MUL) is a disorder with growth delay and congestive heart failure determining prognosis. We aimed to delineate arterial and venous morphology, and arterial stiffness in a representative pediatric MUL cohort. Twenty-three MUL and 23 individually sex and age-matched healthy controls were prospectively assessed in a cross-sectional study with ultra-high frequency ultrasound (48-70 MHz). Heart failure was present in 7 MUL patients, with severe congestive heart failure in 2. Pericardiectomy had been performed in 6 MUL. Arterial lumen diameters and arterial wall layer thickness (intima-media thickness and adventitia thickness) were smaller in MUL patients, but appropriate for body size when compared with controls. Systolic and diastolic blood pressure, aortic and carotid compliance, stiffness as well as central aortic pulsed wave velocity were all similar in MUL compared with controls. Plasma pro-BNP levels were variably elevated (>300 ng/L) in 9/23 MUL patients and in 4/18 MUL patients older than 5 years of age. Internal jugular vein (mean difference 0.054 mm, CI95% 0.024-0.084) and cubital vein (0.046 mm, CI95% 0.013 - 0.078) total wall thickness was elevated in MUL compared with controls. There were no statistically significant relations between vascular parameters and clinical or laboratory signs of heart failure or pericardiectomy. Arterial lumen, wall layer thickness and stiffness are appropriate for body size in MUL, and like healthy controls. Mild venous wall thickening in the upper body region may be due to increased venous pressures related to remodelling caused by diastolic heart failure.
A Tutorial on V2I Communication: Evaluating the LTE-V2X for Day-1 V2I
and V2V Integration in Congested Scenarios
Authors: Hajisami Abolfazl , Weber Ralf , Misener Jim , Chetlur Vishnu Vardhan , Ruder Michael , Chen Shuping
Published: November 2023

Because of the growing interest in LTE-V2X, there is a need to describe its
performance under various conditions and scenarios. This article explores the
deployment of long-term evolution vehicle-to-everything (LTE-V2X) technology for
vehicle-to-infrastructure (V2I) communication and delves into the deployment of
LTE-V2X communication in three major global regions: the United States, Europe,
and China. We begin with an overview of the functionality of LTE-V2X and
highlight the objectives of V2I communication in terms of safety and mobility
applications—and describe why it will be the predominant type of V2X in the
first few years of deployment. We also examine the specific Day-1 V2I message
sets standardized in each region, along with their potential applications and
benefits. The technical details and use cases using these messages are
discussed, along with the benefits they offer in improving the accuracy,
reliability, and safety for surface transportation. Additionally, our field
trial and simulation results demonstrate why, from a technical basis, LTEV2X is
the technology of choice in North America and China. In particular, the
performance of V2I and vehicle-to-vehicle (V2V) communication in a single 20 MHz
channel (Channel 183) is highlighted. The results show that LTE-V2X technology
can support both V2V and V2I communication and that Day-1 V2I messages can be
effectively transmitted and received in a congested urban environment. Overall,
we highlight the potential of LTE-V2X technology for V2V and V2I communication
in enabling safety and efficiency in the current and next generation of
transportation systems.
Analiza domnevne otroške perspektive v problemskih slikanicah
Authors: Višček Sabina
Published: November 2023

The article deals with the alleged children‘s perspective in selected foreign and Slovenian picture books classified as problem books. The production of problem picture books and youth literature in general is increasing every year, as can be seen from the recommendation lists of the Centre for Youth Literature and Librarianship, but there is no corresponding measure of quality. Based on the theory of perspectives in children‘s literature (Saksida 1999), the theory of the implicit reader (Iser 2001), the ways of presenting problem picture books (Blažić 2011) and the theory of the beginning reader (Nikolajeva 2014), problem picture books that explicitly present the themes of violence, death, war, difference, addiction, refugeeism and gender identity were analysed. From the analysis of the selected works it can be concluded that some picture books written for (pre-)school children, regardless of the universality of the children‘s text in the title, are of questionable quality because of the way the theme is presented, but not because of the picture book theme itself.
Pogledi na slikanico
Authors: Blažić Milena Mileva
Published: November 2023

The article shows selected Slovenian and foreign definitions of the picture book, its classification and theory. It presents the literary-historical and theoretical development of picture books in Slovenia, relying on the work of both foreign (M. Nikolajeva, S. Beckett, B. Kümmerling-Meibauer) and Slovenian (M. Kobe, D. Haramija and J. Batič) researchers. We aim to present the picture book as a subject studying teaching, so we check the development of the inclusion of picture books in the Slovenian school system through the curriculum.
Influence of heavy metal ions and storage time on hydroxymethylfurfural formation in honey collected from Ilu Woreda, Oromia Regional State, Ethiopia
Authors: Birhanu Tsedeke , Tolcha Teshome
Published: November 2023

The effect of heavy metals on the formation of hydroxymethyl furfural (HMF) from degradation of reducing sugars in honey collected from Ilu Woreda, West Shewa Zone of Oromia Regional State, Ethiopia were studied. The concentration level of Pb, Cd, Cr and Ni in honey sample was determined using AOAC Official Method. The concentration of HMF in honey was determined using international honey commission standards. The concentrations of heavy metals in fresh honey were 11 ± 0.001, 454 ± 0.002, 630 ± 0.001 and 1 ± 0.001 µg kg-1 for Pb, Cr, Ni and Cd, respectively. The influence of heavy metals on the formation of HMF in honey samples was studied on 5, 30 and 60 days after spiking at concentration level of 10,000 µg kg-1 of each heavy metal. The concentration of HMF for untreated honey samples was ranged 1380-2200 µg kg-1 for the storage time of 5, 30 and 60 days. The concentration of HMF in honey samples spiked with Pb, Ni, Cr and Cd were found to be in the range of 2100-2150, 1900-2430, 2100-2270 and 2050-2330 µg kg-1, respectively. The results of this study indicate that contamination of honey with heavy metal facilitate the formation of HMF.

KEY WORDS: Fresh honey, HMF, Heavy metal ions, HPLC-DAD and Honey quality

Bull. Chem. Soc. Ethiop. 2024, 38(1), 1-10. DOI: https://dx.doi.org/10.4314/bcse.v38i1.1
Towards a comprehensive model of human resource development research and practice: A systematic literature review
Authors: Opoku Felix Kwame
Published: November 2023

Although several models have been proposed to guide practitioners and academics in human resource development  (HRD), there is sufficient manifestation that a new HRD model is required to address emerging HRD problems such as  cultural variation and value systems across the globe, the need to strengthen the theoretical foundation of HRD  research and practice, and the incompleteness of HRD research methods. The purpose of this study was to propose a  comprehensive HRD model that will address these problems in order to make HRD more responsive to the current  needs in HRD research and practice. Bozer and Jones’s (2018) seven-phase systematic literature review approach was  adopted to gather data for this study. The available data were analyzed using thematic analysis. It was found that the  proposed HRD model was capable of helping HRD practitioners to choose appropriate HRD practices that will match  their culture and value systems, and guide them on the methods and theories to apply in their respective locations. On  the basis of these findings, it was concluded that the proposed HRD model can address the problems currently facing  HRD research and practice.
Exploring the extent of refuse use on urban cropping in Zongo of the Wa Municipality, Ghana
Authors: Naamwintome Alfred Beyuo
Published: November 2023

Refuse heaps are common scenes in cities in developing countries amidst the springing up of urban cropping but with  low yields. However, the linkages between refuse generation and use in urban cropping appear to be little addressed in  the existing literature. This paper sought to explore the separation of refuse into biodegradable and non-degradable  and the use of the biodegradable portion as compost in urban cropping to improve crop production often linked to  urban food availability. Hence, refuse generation at the household levels and refuse at the dumping sites were  determined and sorted out using Wa Zongo as a study area. By combining convenience and simple random sampling,  fifteen respondents from fifteen houses within a 150-metre radius of a dumping site were interviewed. Descriptive  statistics, connecting and classifying, were employed in the data analysis. Findings revealed that more refuse is  generated; a greater portion is decomposable; 93.3% of the respondents do not know the use of refuse for cropping;  and, 53.3% prefer inorganic fertilizers for farming. To reduce refuse and eliminate the heaps, this study recommends  refuse segregation at home and dump sites, biodegradable refuse for the production of compost and the use of public  education to achieve this feat.
Tree-based carbon sequestration and storage abilities vary in natural and plantation forest ecosystems
Authors: Ogbemudia F.O. , Ita R.E. , Anwana E.D.
Published: November 2023

Little is known about the relevance of natural forests and plantations in the wake of global warming and climate change. Understanding the impacts of land use conversion from natural forests to plantations on carbon sequestration and storage is critical for sustainable land and forest management. In this study, tree-based carbon sequestration and storage abilities were assessed in natural and plantation forest ecosystems. Four plots within a natural forest and cashew orchard were randomly chosen and four belt transects were established. In each plot, tree species were identified and their density, height, Diameter at Breast Height (DBH) enumerated and measured, respectively. In each plot, litter boxes were placed to collect litter weekly. Soils (at 0 -15 cm and 15 – 30 cm) within each plot were obtained with soil auger. AGB (aboveground biomass), BGB (belowground biomass), AGC (aboveground carbon) and BGC (belowground carbon) were calculated using allometric equations for pan moist and dry tropical forest. Twenty-three and eleven tree species were found in the forest and orchard, respectively. The forest had the largest total biomass allocation (188.61 Mg ha-1) and carbon stock (146.89 Mg C.ha-1) while the orchard had the least total biomass apportionment (37.20 Mg ha-1) and carbon stock (45.60 Mg ha-1). The forest ecosystem had the largest sequestration ability (593.04 Mg CO2ha-1) which followed this trend: aboveground (295.18 Mg CO2ha-1) > belowground (60.51 Mg CO2ha-1) > soils (133.73 Mg CO2ha-1) > litter (49.62 Mg CO2ha-1) while cashew orchard had the least sequestration ability (167.37 Mg CO2ha-1) which followed this order: soil (99.09 Mg CO2ha-1) > litter (35.75 Mg CO2ha-1) > aboveground (27.00 Mg CO2ha-1) > belowground (5.53 Mg CO2ha-1). From these results, land use change affects carbon budgets of ecosystems, hence, this study argues for protection of natural forest while practicing afforestation towards global warming mitigation.
Delaying Water Breakthrough Using Horizontal Wells in Khurmala Oilfield
Authors: Altaher Al-Hussein , Hamoudi Maha , Humoodi Akram
Published: November 2023

Water coning presents a serious problem in many oil fields, in terms of reducing oil production rate and increasing production costs. As breakthrough time represents the time until coning occurs, it should be increased by studying the significant affecting parameters and proposing a method to control them. Since horizontal wells are known to have higher potentials than vertical wells, they are used worldwide to delay water coning among other purposes. In this study, four designed horizontal wells are proposed to replace a drilled vertical well in Khurmala oilfield in northern Iraq, and the effect of each on water breakthrough time is studied with four different production rates and six different permeability ratios. PERFORM software is used to model the wells, and calculate the expected breakthrough time for each well. It was found that the 1000-ft horizontal well, and longer wells, will delay water breakthrough time, in all cases. Also, higher permeability ratios increase the breakthrough time for longer wells, by up to 15.69 folds, except with the optimum production rate, and increasing production rate results in decreasing breakthrough time (tBT) in all cases, where doubling the production rate may decrease tBT by more than 73.5%. It is essential to determine the minimum horizontal well length required to delay water breakthrough time, compared to the vertical well, by considering both production rate and permeability ratio. The breakthrough time ratio, depending on the proposed to optimum production rate ratio, can be calculated using the developed correlation with an average error of 1.73%.
Morphogenesis of the Closed Depressions in Middle Atlas: Case of the Causse of El Menzel, Morocco
Authors: Naouadir Iliass , Dridri Abdallah , El Asmi Hicham , Chellai El Hassane , Ettaki Mohammed , Lyazidi Aziza
Published: November 2023

Closed depressions are the most typical exokarstic forms of the Moroccan Middle Atlas karst. These features present a great diversity of forms and sizes related to the multiple and often obscure conditions of morphogenesis in several karstic plateaus of the tabular Middle Atlas such as that of El Menzel. This little-known carbonate panel is characterized by an important geodiversity of closed depressions with variable shapes and reliefs: poljes, uvalas, dolines, kamenitzas, and rain pits. The results confirm the tectogenetic nature of several closed depressions of which the most important are: the polje of El Menzel and the polje of Quaçbat Beni Yazgha which are aligned along the major accidents of the Causse oriented NE-SW and NW-SE. The pre-established tectonic heritage Accident Median Moyen Atlasique and Accident Nord Moyen Atlasique, and the compressive tectonics and particularly extensive phases from the upper Miocene to Quaternary during the surrection of the Middle Atlas associated with the pluvial climatic phases have permitted the development of the good potential of karstification as well as the large closed depressions of the Causse.
Mineralogical and Geochemical Characteristics of Clay Deposits, Bussaya Area, Southern Iraq
Authors: Mezaal Ghassan , Khwedim Kareem , Abdulzahra Imad
Published: November 2023

Bussaya clay deposits are located in the southern part of Iraq in Al-Muthana Governorate within the Nfayil beds (Middle Miocene), these deposits composed of palygorskite, chlorite and illite representing the clay minerals indentified using X-Ray diffraction technique data on four samples, while the non-clay minerals are quarz, dolomite and halite, twenty three samples of clay deposits were analyzed by using X-Ray Fluorescence technique for the major oxides; which demonstrates that the average values are SiO2: 39.17%, Al2O3: 9.95%, Fe2O3: 6.21%, MgO: 5.9%, CaO: 11.3%, TiO2: 0.9%, L.O.I.: 14.94%, and relativley high values of alkalines, while fifteen samples tested mechanically using Hydrometer method in which the results show a composition of clay, sandy clay, mud, and sandy mud, the chemical data showed that semi-arid to arid paleoclimate conditions predominated in the depositional environment as represented by the relationship between SiO2with Al2O3, Na2O, and K2O, While the relationship between Al2O3, CaO, Na2O, and K2O shows a low to relatively moderate chemical weathering, and due to the relationship between SiO2and (K2O / Na2O), the examined clays tectonically reflect an island arc, the intermediate igneous rocks are shown to be the source of the examined clays according to the Al2O3/TiO2 ratio.
Studi Jumlah Penyebaran Kendaraan setelah Pengoperasian Fly Over pada Persimpangan Jl. A. H. Nasution dengan Jl. Jamin Ginting
Authors: Abdhi Ridha Muhammad
Published: November 2023

Congestion is a common problem in transportation. Congestion can be caused by several things, one of which is the continued increase in population and the increasing number of immigrants who settle. This also happens in the city of Medan, especially at the intersection of Jalan A.H. Nasution and Jamin Ginting road. This rapid growth causes the volume of traffic at this location to increase, resulting in frequent traffic jams during rush hour. Seeing these problems, the Medan City government decided to build a flyover at the intersection location as a solution to overcome traffic jams. Which started in July 2012 and was completed in January 2015 and inaugurated on February 28 2015. However, is this construction currently able to overcome the congestion that occurs at this intersection? Therefore, this research was conducted to determine the effect of the flyover operation on the number of vehicles distributed at the intersection. Based on the results of the survey and analysis carried out at the intersection of Jl A.H Nasution and Jl Jamin Ginting, the highest traffic volume values were obtained at the intersection of Jl A.H Nasution (1812 vehicles/hour) and the flyover from the direction of Jl A.H. Nasution (4017 kend/hour) which occurred on Monday. The highest capacity value was on Monday afternoon on Jl. The highest degree of saturation value was obtained on Monday afternoon on Jl Ngumban Surbakti (0.951). So based on the indicator values obtained, it shows that the construction of flyovers as an alternative to reduce traffic jams is considered quite effective in accordance with the 1997 MJKI regulations which state that the value Maximum Degree of Saturation for urban areas is >1. This is also proven by the small number of vehicles crossing the intersection and conversely the number of vehicles crossing the flyover above it is quite large.
Serviços de enfermagem: certificação como diferencial estratégico
Authors: Novaes Lucianna Reis , De Barros Michel Matos , Cirino Fabrício dos Santos
Published: November 2023

A equipe de enfermagem representa 40,6% dos profissionais do hospital, sendo a maior força de trabalho na assistência ao paciente, logo, a certificação deste serviço apoia o reposicionamento do enfermeiro, assim como o desenvolvimento da equipe, integrando-o à estratégia de alto desempenho assistencial em busca da excelência em gestão. O objetivo é demonstrar a percepção de que a Enfermagem passa por uma reestruturação de seu saber por meio das ferramentas gerenciais do Programa de Certificação por Distinção de Serviços de Enfermagem. Foram reunidas informações das avaliações em modelo digital, acompanhadas entre janeiro de 2021 e junho de 2022, em três hospitais com perfis, financiamento e complexidade diferentes. O relato de experiência se deu por meio do levantamento de informações com emprego de grupos focais com a Governança, Lideranças de Enfermagem e Enfermeiros. Identificou-se pelo desenvolvimento do programa uma maior integração da equipe assistencial com a liderança, autonomia do enfermeiro na gestão do setor e envolvimento do técnico de enfermagem na equipe multidisciplinar. Os profissionais relataram maior reconhecimento profissional, empoderamento e realização pessoal, refletindo no clima de segurança e satisfação no trabalho. A comunicação sobre o quadro do paciente com o médico melhorou, trazendo bons resultados na assistência, como por exemplo, a identificação de sinais precoces de deterioração clínica. Identificaram-se mudanças no posicionamento do enfermeiro como gestor clínico do cuidado. Conclui-se então que este Programa possibilitou observar o avanço da atuação do enfermeiro no cuidado centrado no paciente, com informações e dados que auxiliaram na tomada de decisão, favorecendo maior autonomia e atuação, alicerçado pelos princípios éticos da profissão.
PERENCANAAN KUAT TEKAN DAN TARIK BETON MENGGUNAKAN AGREGAT DARI DESA JANJI KAB. LABURA f’c 30 MPa (Studi Laboratorium)
Authors: Sirega Rolas , Turnip Ericzon , Ginting Rahelina
Published: November 2023

Beton merupakan bahan bangunan yang banyak dipergunakan dalam pelaksanaan proyek konstruksi pada saat ini. Hal tersebut tidak terlepas dari keunggulan yang dimilikinya yaitu kemudahan pengerjaan dan keawetannya. Beton yang banyak depergunakan dalam proyek konstruksi adalah jenis beton normal dengan kekuatan mencapai 500 kg/cm2. Pada prinsipnya untuk mendapatkan beton dengan kualitas yang baik sangat dipengaruhi oleh kualitas dari bahan-bahan penyusunnya yaitu agregat agregat halus, agregat kasar, semen dan air, serta cara pengerjaannya.agregat halus sebagai bahan dasar untuk pembuatan beton memegang peranan penting dalam menentukan mutu beton. Agregat halus banyak tersedia langsung di alam seperti sungai-sungai atau dibuat dari pecahan batuan alam di daerah pantai, sehingga masing-masing agregat tersebut akan mempunyai kualitas yag berlainan.Penelitian ini menggunakan benda uji berbentuk silinder ukuran π 15 cm dan tinggi 30 cm dan kuat tekan beton yang diisyaratkan f’c 30 MPa. Penelitian ini mengguanakan pasir (agregat halus) dan kerikil (agregat kasar) dari Desa Janji, Kab. Labuhan Batu Utara, dan pengujian kuat tekan dan tarik beton dilakukan dilaboratorium Universitas Darma Agung Medan.Dari pengujian ini didapatkan hasil kuat tarik beton = 6,236 Mpa dan hasil kuat tekan umur 28 hari = 25,63 MPa.
ANALISA DAYA DUKUNG PONDASI BORE PILE, TEA BEAM, PILE CAP PADA PROYEK PEMBANGUNAN LIVING PLAZA CEMARA ASRI MEDAN
Authors: Silaen Tumbur , Panjaitan Meryani Br. , Endayanti Masriani , Hutahaean Nelson
Published: November 2023

Studi ini bertujuan untuk menemukan bagaimana menghitung kapasitas daya dukung pondasi bore pile dengan menggunakan data Standart Penetration Test (SPT) pada bangunan Living Plaza Cemara Asri dan bagaimana menghitung beban yang dipikul oleh pondasi bore pile Living Plaza Cemara Asri serta evaluasi kapasitas kelompok tiang dan stabilitas pile cap dan tea beam. Pondasi living plaza cemara asri terdiri dari pondasi tiang bor yang disatukan dengan pile cap untuk dapat menahan beban-beban gedung yang bekerja, ditransfer langsung oleh kolom ke pondasi yang diikat oleh pile cap dan menyalurkan ketanah agar bangunan diatasnya berdiri kokoh sehingga tidak mengalami penurunan berlebihan. Dengan menggunakan metode mayerhoff didapat daya dukung ijin pondasi tiang bor pada kedalaman 18 m (Qi) sebesar 348,79  ton. Efesiensi kelompok tiang menggunakan metode Converse-Labarre Formula adalah 0,796 untuk 4 tiang. Perhitungan dimensi pile cap 4 pile yaitu panjang 3600 mm, lebar 3600 mm dan tinggi 1500 mm. Dari hasil perhitungan didapat daya dukung total kelompok tiang (Qg) untuk 4 tiang pada kedalaman 18 m sebesar 1109,16 ton beban yang dipikul (Pu) 734.439 ton. maka pondasi aman dalam memikul beban yang ada diatasnya. Kuat geser satu arah daerah Y pile cap Vc = 1405.93 ton  Vu = 369.259 ton, kuat geser satu arah daerah X pile cap Vc = 356.728 ton Vu = 63.243 ton, kuat geser dua arah pile cap Vc = 500.45 ton Vu = 256.424 ton, Hasil perhitungan penulangan pada pile cap adalah D16 - 100 mm tulangan atas dan tulangan bawah D22-100 mm.
ANALISA MANAJEMEN KONSTRUKSI PROYEK PEMBANGUNAN GEDUNG KOPERASI ASTRA INTERNATIONAL JAKARTA PUSAT
Authors: Gulo Dedi Putra Jaya , Sidjabat Robinson , Ginting Rahelina
Published: November 2023

Adapun tujuan studi ini adalah untuk  mengetahui metode pelaksanaan pekerjaan Struktur pada proyek pembangunan Gedung Koperasi Astra International Jakarta Pusat; menghitung kwantitas atau volume pekerjaan dan anggaran biaya, waktu serta alat yang digunakan; dan mengetahui analisis biaya pada proyek Gedung Koperasi Astra International dengan menggunakan metode analisa SNI 2016. Proyek pembangunan gedung Koperasi Astra International Jakarta Pusat yang dijadikan sebagai objek penelitian berlokasi Jl. A. Yani No.66, RT.8/RW.3, Cemp. Putih Tim., Kec. Cemp. Putih, Kota Jakarta Pusat, Daerah Khusus Ibukota Jakarta 10510. Metode pelaksanaan pembangunan gedung Koperasi Astra Internasional ialah dimulai dari pekerjaan persiapan, pembersihan dan pengukuran lahan, kemudian pekerjaan struktur Bawah dan struktur Atas Gedung.  Hasil perhitungan rencana anggaran biaya untuk pekerjaan struktur yang saya peroleh berdasarkan hasil analisa adalah Rp. 35.372.242.130,92 (Tiga Puluh Lima Milyar Tiga Ratus Tujuh Puluh Dua Juta Dua Ratus Empat Puluh Dua Ribu Seratus Tiga Puluh Rupiah). Berdasarkan analisa waktu pelaksanaan pekerjaan struktur diperoleh lama waktu pelaksanaan adalah 608 hari (20,5 bulan). Sehingga terdapat perbedaan waktu pelaksanaan yang direncanakan dari proyek.
ANALISIS DAN METODE PELAKSANAAN PEKERJAAN STRUKTUR PELAT LANTAI DENGAN METODE HALF SLAB PADA PROYEK PEMBANGUNAN GEDUNG MANHATTAN MEDAN
Authors: Rumahorbo Daniel Bram
Published: November 2023

Kemajuan teknologi dunia konstruksi semakin pesat. Berbagai inovasi terus dilakukan untuk meningkatkan kualitas pekerjaan. Penggunaan bahan bangunan yang ramah lingkungan dan metode pengerjaan  yang efisien dan efektif terus dikembangkan untuk peningkatan kualitas pekerjaan konstruksi. Salah satunya adalah metode pekerjaan pelat lantai menggunakan pelat half slab. Pelat half slab terdiri dari dua lapisan yaitu lapisan pertama menggunakan pelat pracetak yang juga berperan sebagai bekisting / cetakan dan lapisan kedua menggunakan beton cor konvensional. Penggunaan pelat half slab bertujuan untuk mempercepat dan mempermudah pekerjaan pelat lantai. Pada tugas akhir ini, penulis melakukan penelitian yang menganalis strukrut pelat lantai dengan metode half slab pada pembangunan gedung Manhattan Medan. Pengumpulan data dilakukan dengan metode observasi dan wawancara. Metode perhitungan momen menggunakan metode koefisien momen dan perhitungan biaya menggunakan metode analisa harga satuan pekerjaan. Adapun hasil analisis perhitungan koefisien momen adalah Mlx = 4,204 kNm, Mtx = 8,308 kNm, Mly = 0,0801 kNm, Mty = 5,706 kNm. Perhitungan biaya untuk lantai 2 dengan metode half slab adalah 5.435.101.601 dan perhitungan waktu pekerjaan  pelat lantai 2 dengan metode half slab sebesar 13,63 hari.
EVALUASI STRUKTUR BAWAH PADA PEMBANGUNAN GEDUNG PENDIDIKAN IAIN PADANGSIDEMPUAN
Authors: Agustina Indriani , Gultom Benny Anton , Endayanti M. , Ginting R.
Published: November 2023

Pondasi merupakan suatu jenis konstruksi yang menjadi dasar suatu bangunan yang berhubungan langsung dengan tanah yang berfungsi sebagai penopang bangunan yang ada diatasnya, bertujuan untuk mentransfer beban secara vertikal dan horizontal yang bertahap dan merata ke lapisan tanah. Pembangunan gedung pendidikan IAIN Padangsidempuan menggunakan pondasi dalam yanitu tiang pancang dengan kedalaman 18m, diameter 0,5m. Sehingga perlu dilakukan perhitungan guna memastikan apakah data perencanaan awal sudah memenuhi kelayakan sesuai dengan standar yang berlaku. Dari hasil perhitungan yang dilakukan ternyata terdapat perbedaan nilai daya dukung pondasi dan daya dukung kelompok tiang antara perencanaan awal dengan hasil perhitungan, akan tetapi tidak mempengaruhi kualitas pondasi tersebut dikarenakan perbedaan nilai tersebut tidak terlalu jauh dan masih dalam tahap aman.
ANALISA KUAT TEKAN DAN TARIK BETON MENGGUNAKAN BATU PECAH DARI DESA NAGASARIBU SEBAGAI AGREGAT KASAR DENGAN VARIASI SICA FUME PADA CAMPURAN BETON
Authors: Purba Indra Nanda Parsaoran , Roha Lasni , Ginting Rahelina
Published: November 2023

Beton merupakan bahan yang sangat penting digunakan dalam bidang konstruksi. Hal ini tidak terlepas dari kekuatannya yang tinggi,kemudahan dalam pengerjaan, dan juga keawetannya. Sebagian besar proyek konstuksi di Indonesia bahkan dunia menggunakan beton. Maka dari itu penulis melakukan penelitian tentang beton, untuk mengetahui kekuatan dari pada beton tersebut.  Beberapa penelitian menunjukkan hasil pencampuran antara beton dengan bahan pengganti sika fume semuanya bertujuan  positif pada nilai kuat tekan beton. Hasil yang diperoleh dari pelaksanaan penelitian itu adalah beton yang dicampur sika fume menghasilkan kuat tekan yang lebih tinggi dari beton normal. Menggunakan agregat yang berbeda dari penelitian sebelumnya, penulis berharap besar agar penelitian ini dapat berhasil. Agregat yang digunakan adalah batu pegunugan yang dipecah dari desa Nagasaribu, dan juga pasir dari sugai Aek Haidupan. Menggunakan benda uji berbentuk silinder, yang berukuran diameter 15 cm dan tinggi 30 cm.dan kuat tekan beton yang diisyaratkan f’c 25 MPa. Penelitian dilaksanakan di laboratorium beton Teknik Sipil, Universitas Darma Agung Medan. Dan pengujian yang dilaksanakan di laboratoriun Beton tersebut, akan menghasilkan kuat tekan dan tarik belah beton.
EVALUASI PERENCANAAN TEMBOK PENAHAN TANAH LONGSOR SIDIKALANG – SINGKIL STA 2+150
Authors: Malau Leyona , Sinaga Herry Apriantho , Endayanti Masriani
Published: November 2023

Kelongsoran tanah sering terjadi diakibatkan meningkatnya tegangan geser suatu massa tanah atau menurunnya kekuatan geser suatu massa tanah. Pada kasus ini Sidikalang–Singkil STA 2+150 mengalami kelongsoroan.Alternatif penanggulangan longsor pada kasus ini dilakukan dengan menggunakan dinding penahan tanah model Kantilever yaitu dinding penahan tanah yang terbuat dari beton bertulang yang tersusun dari dinding vertikal dan tapak lantai dimana konstruksi berbentuk dinding yang digunakan untuk menjaga kestabilan agar bidang tanah tidak bergeser atau longsor.Dari perhitungan Retaining wall hasil  = 2,5  ;  = 3,6 ;  = 3429,966 dimana Qg  Pu .Nilai SF aman terhadap guling dan geser
ANALISA PEMILIHAN MODA TRANSPORTASI SIANTAR-BALIGE DENGAN METODE STATED PREFERENCE
Authors: Simarmata Romatua , Sirait Hendro Lambok , Debataraja Semangat , Lubis Yusuf Aulia
Published: November 2023

Pemilihan moda transportasi memiliki peran yang penting dalam sebuah perencanaan sistem transportasi. Hal ini dikarenakan pentingnya mengetahui karakteristik serta perilaku pengguna moda dalam mendesain sarana maupun prasarana transportasi yang akan disediakan. Karakteristik umum penggunazmoda Bus didominasizoleh wanita dengan persentase 56% dan pada moda Mini Bus didominasizoleh Pria dengan persentase 57%. Rentang usia responden bus didominasi dengan rentang usia 41-50 tahun sebesar 36% dan Mini Bus dengan rentang usia 31-40 tahun sebesar 43%. Tingkat pendidikan terakhir responden bus adalah SMA dengan persentase 52% dan responden Mini Bus adalah sarjana dengan persentasi  48%. Pekerjaan responden bus didominasi bekerja di petani  sebesar 31%, pada Mini Bus didominasi oleh wiraswastazsebesar 38%. Dengan maksud perjalanan responden bus dan Mini Bus adalah belanja sebesar 30% dan 27%. Berdasarkan tingkat penghasilan responden bus didominasi tingkat penghasilanzRp 1.500.000z–zRp 2.500.000 sebesar 33% dan Mini Bus dengan penghasilan >Rp 3.500.000 sebesarz38%. Alasan memilih moda bus karena harga/tarif sebesar 36% dan pada Mini Bus alasan kenyamanan sebanyak 41%.