bluuebunny/crossref_metadata_2025_split huggingface dataset:
Toughness Characteristics of Microfiber-Based Geopolymer Concrete Voided Slabs under Soft Impact
Authors: Bhuvaneshwari Panchanatham , Suchitra Bodu , Divya Ramachandran 
Published: July 2024

Abstract
The present study aimed to experimentally and numerically analyze voided geopolymer concrete slabs applied with soft impact through a drop-hammer impact setup. Six slabs (600 mm ×600 mm × 115 mm) were cast using geopolymer concrete. Two were cast as solid slabs and the remaining four slabs were cast as voided slabs by placing a 70 mm diameter spherical void formers in two different patterns. Two patterns of void formers are followed as 70 mm void former at 240 mm spacing and 70 mm void former at 120 mm spacing. Micro steel fiber at a dosage of 1 % by volume fraction was added in companion specimens in each case. The placing of void former reduced the self-weight of the slabs by 6 % and 12.6 %, respectively, compared to solid slabs. The soft impact was achieved by releasing a 4.5 kg steel ball from a fall height of 0.457 m in a fabricated soft impact test frame. A similar soft impact test was accomplished numerically using the analysis system (ANSYS) workbench. Parametric analysis shows that when compared to fiber-reinforced solid slabs, the impact resistance of fiber-reinforced voided slabs with 70 mm void former at 240 mm was enhanced. The enhancement percentage for energy absorption, ductility index, and ultimate crack resistance were 34.05 %, 55.26 %, and 9.68 %, respectively. The fiber-reinforced voided slabs were also found to be economical and sustainable with reduced CO2 emission and embodied energy.
A Review on Formability and Damage Behavior of Powder Metallurgy Composites during Upsetting
Authors: Ramakrishnan Tharmaraj , Maharajan Joseph Davidson , Raveendran Jeremiah 
Published: July 2024

Abstract
Formability is the measure of deformity a workpiece can endure from the created stresses inside the substance before the crack event. The investigation of the formability of powder metallurgy (PM) parts plays an essential role in the metalworking industries because of their needs in engineering applications to examine the end product’s performance. In the upsetting of PM materials, the formability depends on various factors such as preform relative density, percentages of reinforcement added in the material, size of particles, the geometry of the preforms, and friction between the workpiece and the die because of their changes in the mechanical and physical properties. Also, in the compression of PM samples, the damage/fracture occurs in the outer region of the components because of a higher amount of stresses and pores that could affect the damage limit of the material. Hence, the formability and damage analysis of PM components is critical for the industrial engineer to understand the significance of the variables that could help design a suitable application process. In this regard, this review focuses on the basics of PM technique, and upsetting process, formability, and damage characteristics of PM materials and methods to improve the formability and fracture behavior of PM components in the upsetting process are stated clearly.
Effect of Rock Lithology and Reloading Direction on Rock Stress Memory
Authors: Ma Chun-de , Zhang Jun-jie , Tan Guan-shuang , Yang Wen-yuan , Liu Ze-lin 
Published: July 2024

Abstract
The Kaiser effect (KE), as a presentation of rock stress memory, has been widely used in in situ stress measurement because of its convenience and economy. However, the influence of rock lithology and directionality on the KE have not been answered yet. To solve this question, three-stage loading Brazilian tests were conducted on three types of rock disks in this study. The specimens were rotated with a certain rotation angle θ (5°–90°) before the third-stage loading, and the jump point method and bilinear regression method were selected to recognize the Kaiser points. The results suggested that significant KE occurred in the three rock materials under the Brazilian test and that the KE directionality of rocks with different lithology varies greatly. The KE gradually fails as the rotation angle increases. The critical angles of granite, marble, and sandstone are 13°, 60°, and 5°, respectively. Besides, the directionality of the KE is closely related to the distribution of microcracks inside the rock and the critical stress of crack propagation. This study could provide a reference for experimental design and error analysis of in situ stress measurement by the acoustic emission method in civil and geotechnical engineering.
Eccentric Compression Performance of Cold-Formed Thin-Walled Steel-Reconstituted Bamboo Composite Columns
Authors: Zhang Xiuhua , Zhang Qiaoling , Zeng Ziyan 
Published: July 2024

Abstract
To investigate the eccentric compression performance of cold-formed thin-walled steel-reconstituted bamboo (CTS-RB) composite columns, 14 specimens were tested under eccentric compression conditions. The parameters included section steel type, thickness of reconstituted bamboo (RB) plates, slenderness ratio, and eccentricity. The study analyzed the observed damage modes and eccentric compression performance of the specimens and investigated the bearing capacity and deformation capacity. It was indicated that the composite of RB and cold-formed thin-walled steel (CTS), connected by self-tapping screws and structural adhesive to form an integrated column, has produced acceptable results. The bearing capacity of the test specimen is influenced significantly by the eccentricity. On this basis, a finite element model is created that considers nonlinearities in material, geometry, and contact. The finite element calculations show good agreement with experimental results, with an error rate within 17 %, which validates the feasibility of using finite element methods. Moreover, the paper thoroughly examines the effects of slenderness ratio and eccentricity on the load carrying capacity of the composite column. This study presents the data fitting of the eccentricity coefficient and the slenderness ratio coefficient in the formulas of the yield and bending capacity of the composite columns, and the obtained theoretical calculations have an error of less than 16 % with the experiment, which is applicable to the prediction of the load bearing capacity of the composite columns.
Crashworthy Behavior of Multilayered and Multitubular Glass/Epoxy Fiber Reinforced Composite Tube with Different Helical Overlap Configurations
Authors: Kureel Saurabh , V. Murari 
Published: July 2024

Abstract
For using composite tubes as irreversible energy absorbers, it is essential to understand the importance of tube architecture and geometry that influence their energy-absorbing properties. To this end, this study concentrates on the experimental investigation of crashworthy responses of composite tubes with different combination of helical overlap portions arranged in multilayered and multitubular forms, subjected to axial impact crushing (drop weight impact). Multilayered and multitubular composite tubes are made in such a way that each layer/tube has a different helical overlap configuration. Three helical overlap configurations considered are ‘no overlap,’ ’quarter overlap,’ and ‘half overlap.’ The effects of different arrangements of helical overlap portions on the response of the test specimens are examined and parameters such as mean crushing load, energy absorption, specific energy absorption, and crush load efficiency are determined. Further, the responses are compared with the responses of tubes having conventional winding (straight wound) of similar dimensions. The damage and failure mechanisms found in different cases are studied and compared. This study presents the importance of combining different helical overlap configurations and arranging them in multilayered and multitubular forms for achieving progressive crushing as well as tailored energy absorption properties.
DEVELOPING TEACHING MATERIALS FOR LISTENING FOR GENERAL PURPOSES SUBJECT
Authors: Hustarna Hustarna , Masbirorotni Masbirorotni 
Published: July 2024

ABSTRACTListening for General Purposes is one of the compulsory subjects in the English study program at one of the public universities in Indonesia. In the teaching and learning process, the lecturers often find difficulties in finding appropriate materials that fit the curriculum and students' interests. This research aimed to develop teaching materials for the Listening for general Purposes subject. The developed teaching materials were in the form of a textbook with attractive videos. The topics were selected based on the characteristics of the students and the result of the needs analysis questionnaire. This research employed a Research and Development design based on the theory developed by Borg and Gall (1983). The result of the research is a listening textbook with attractive videos. With such a textbook, it is hoped that the lecturers teaching Listening for General Purposes will no longer find it difficult to teach this subject. Besides, videos are hoped to encourage students to be more active in the teaching and learning process. The developed product is expected to also be used by other lecturers teaching listening in other universities when the result of the implementation of the product yields positive results in further research. ABSTRAKListening for General Purposes adalah salah satu mata kuliah wajib yang dicantumkan dalam kurikulum program studi Bahasa Inggris di salah satu universitas negeri di Indonesia. Dalam proses pembelajaran, dosen sering menemukan kesulitan dalam mendapatkan bahan ajar yang menarik dan sesuai dengan kurikulum. Penelitian ini bertujuan untuk mengembangkan bahan ajar untuk mata kuliah Listening for General Purposes. Bahan ajar yang dikembangkan berupa buku teks yang dilengkapi dengan video-video menarik. Pilihan topik pembelajaran disesuaikan dengan karakteristik mahasiswa dan berdasarkan hasil angket analisis kebutuhan yang diberikan ke partisipan mahasiswa. Penelitian ini menggunakan rancangan penelitian Riset dan Pengembangan berdasarkan teori Borg dan Gall (1983). Hasil dari penelitian ini adalah buku listening yang dilengkapi dengan video. Dengan adanya buku teks tersebut diharapkan dosen yang mengajar Listening for General Purposes tidak lagi menemui kesulitan dalam menentukan bahan ajar yang akan digunakan. Di samping itu, video-video yang digunakan diharapkan bisa mendorong mahasiswa untuk lebih aktif dalam proses pembelajaran listening tersebut.How to Cite: Hustarna, Masbirorotni. (2023). Developing Teaching Materials for Listening for General Purposes Subject. IJEE (Indonesian Journal of English Education), 10(2), 389-408. doi:10.15408/ijee.v10i2.32202.
Daniel Wing and Alan Scott: The Bread Builders. Hearth Loaves and Masonry Ovens
Authors: Jaine Tom 
Published: July 2024

Daniel Wing and Alan Scott: The Bread Builders. Hearth Loaves and Masonry Ovens: Chelsea Green Publishing Co., White River Junction, Vermont, 1999: ISBN 1-890132-05-5: 253 pp., many drawings and photographs, p/b, $35, approx. £35.
Experimental Evaluation of the Effectiveness of Using Visual Cues for Controlling Unmanned Vehicles
Authors: Ostapets Y. D. 
Published: July 2024

Purpose. The study aims to experimentally evaluate the effectiveness of using visual cues, namely ARToolKitPlus, ArUco markers and two-dimensional QR (quick response code) codes in the tasks of localizing unmanned vehicles (UVs) indoors. Methodology. To enable the implementation of the processes of localization and perception of unmanned vehicles based on visual marks (markers), the structure of the visual marks processing subsystem has been developed. An algorithm for the combined use of three types of visual markers – ARToolKitPlus, ArUco markers and QR codes – for localizing unmanned vehicles and identifying cargo is proposed using the example of an online store warehouse scenario. To conduct experiments on the markers, we chose a hardware and software tool such as the JeVois-A33 smart machine vision camera with the JeVois Markers Combo software module and the JeVois Inventor graphical interface. Findings. An experimental study of the possibility of correct recognition of visual marks for indoor working conditions was carried out. As a result of a series of experiments, the possibilities of correct recognition of visual marks such as ArUco, ARToolKitPlus markers and QR codes during scanning at right angles to the camera at a distance ranging from 0.3 to 2 meters were determined. Originality. The study obtained the probabilities of correct recognition of ArUco, ARToolKitPlus markers and two-dimensional QR codes in the conditions of localization of unmanned vehicles indoors. Practical value. The obtained results of the study can be used to create, simulate, and analyze the effectiveness of algorithms for localizing and perceiving unmanned vehicles indoors using appropriate visual markers. The proposed generalized structure of the visual marker processing subsystem of the localization and perception system can be used in the development of unmanned vehicle control systems.
Intravascular ultrasound-­guided intracranial artery stenting in a patient with recurrent ischemic stroke: a case report
Authors: Zakaryan N. V. , Molokhoev E. B. , Boyarintsev V. V. , Ardashev V. N. , Belkov D. S. , Davtyan A. G. , Kirakosyan V. R. , Pankov A. S. 
Published: July 2024

Introduction. Currently, there is an active search for approaches to the treatment of patients with intracranial artery (ICA) stenosis and recurrent ischemic stroke with aggressive therapy. To date, evidence has been received of the benefits of ICA stenting in combination with drug therapy. It has been shown that invasive treatment is not inferior in effectiveness and treatment outcomes to therapy. Intravascular ultrasound (IVUS) can provide valuable information regarding the morphology of ICA lesions and improve the outcome of ICA stenting.Description. After successful endovascular thrombus removal, a patient with recurrent acute ischemic stroke underwent elective IVUS-guided stenting of the hard-to-reach communicating and cavernous intracranial segments of the internal carotid artery, which made it possible to assess the detailed morphology and select the optimal stent size.Conclusion. A clinical example demonstrates the IVUS potential in the invasive diagnosis of ICA pathology for stenting or balloon angioplasty. ICA IVUS will provide the necessary information for neurointervention specialists to perform highly effective and optimal endovascular interventions on the ICA, similar to percutaneous coronary intervention. This will also reduce the risk of adverse intra- and postoperative events, and will allow identifying patients at high surgical risk.
A multimorbid patient with heart failure and long-term treatment with enhanced external counterpulsation: a case report
Authors: Lishuta A. S. , Slepova O. A. , Nikolaeva N. A. , Kozhevnikova M. V. , Zektser V. Yu. , Rustomyan A. V. , Petrukhnova M. F. , Belenkov Yu. N. 
Published: July 2024

Management of multimorbid patients is challenging, despite advances in pharmacotherapy and widespread use of surgical treatment. The combination of diseases such as coronary artery disease leading to heart failure, hypertension, type 2 diabetes and chronic kidney disease requires an individualized approach to the patient. Adjuvant non-invasive therapies could facilitate the management of such patients. In addition, the use of longer-term non-pharmacological treatment is associated with prolonged follow-up by medical personnel, which can improve patient adherence to therapy and, thus, their quality of life.This article presents a case of long-term follow-up and complex management of a patient with multimorbid pathology, including heart failure of ischemic etiology, with the addition of enhanced external counterpulsation in intermittent mode to therapy.
Sedentary lifestyle as a risk factor for cardiovascular diseases in young people: awareness, self-assessment and stress test results
Authors: Zimakova E. I. , Plisyuk A. G. , Begrambekova Yu. L. , Rybakov D. A. , Daudov I. Sh. , Orlova Y. A. 
Published: July 2024

Aim. A comprehensive study of sedentary lifestyle in young people at different levels: awareness of the connection between physical activity and the risk of cardiovascular diseases, self-assessment of physical activity and impartial evaluation of cardiorespiratory endurance.Material and methods. The study included 112 students aged 18 to 24 years without verified noncommunicable diseases, who filled out the "Questionnaire for individuals aged <65 years to identify noncommunicable diseases, risk factors for their development, consumption of narcotic drugs and psychotropic substances without prescription" and an additional questionnaire with open questions about cardiovascular risk factors. In addition, participants underwent the Harvard step test.Results. The level of cardiorespiratory endurance was not associated with sex and age in our sample. There was also no significant association between a high Harvard step test score and a positive response to the question about moderate or brisk walking >30 min/day. A positive response about training (3 times/week) in 3/4 of cases identified young people with average and high cardiorespiratory endurance.Conclusion. The study results indicate a fairly high awareness of students about the dangers of physical inactivity. The data obtained can form the basis for research to optimize methods for assessing the physical activity of young people, used as part of the first stage of medical examination.
Interaction of serum heat shock proteins’ levels with the severity of venous congestion in patients with acute decompensated heart failure with preserved ejection fraction
Authors: Timofeev Yu. S. , Afaunova A. R. , Ivanova A. A. , Vedenikin T. Yu. , Dzhioeva O. N. , Metelskaya V. A. , Pokrovskaya M. S. , Drapkina O. M. 
Published: July 2024

Aim. To analyze the interactions between heat shock proteins (HSPs) (HSP27, HSP70 and cardiovascular HSP — cvHSP) serum levels and acute decompensated heart failure (HF) and signs of venous congestion in patients with preserved ejection fraction (HFpEF).Material and methods. The study included 80 patients with HFpEF aged from 50 to 85 years: 60 with acute decompensated HF and 20 with stable HFpEF. HSP levels were estimated with the enzyme immunoassay method using AssayPro (USA) and Cloud-­Clone (PRC/USA) reagent kits with detection on a Multiskan FC photometer.Results. The medians of HSP27, HSP 70 and cvHSP in the acute decompensated HFpEF group were significantly higher than in the stable HFpEF group. In the decompensated HFpEF group with mild congestion, the medians of HSP27 (0,58 ng/ml) and cvHSP (905 pg/ml) were significantly lower than in the group of patients with moderate or severe congestion (1,67 ng/ml and 1028 pg/ml, respectively). The medians of HSP27 and cvHSP in the group with ≥3 B-lines in one lung segment were significantly higher than the medians in the group with <3 B-lines by 3,6 times and 1,2 times, respectively.Conclusion. Higher serum levels of HSP27, HSP70 and cvHSP are associated with the acute decompensated HFpEF. HSP27 and cvHSP levels are positively associated with the severity of congestion assessed by VExUS and B-lines.
Follow-up monitoring of second health status group persons with high and very high cardiovascular risk. Guidelines
Authors: Drapkina O. M. , Drozdova L. Yu. , Ipatov P. V. , Kalinina A. M. , Ivanova E. S. , Shepel R. N. , Senenko A. Sh. , Gambaryan M. G. , Karamnova N. S. , Lishchenko O. V. , Savchenko E. D. 
Published: July 2024

The guidelines describe the management of follow-up monitoring of second health status group persons, who have a high and very high cardiovascular risk. The following are presented: action sequence and follow-up content in this category of patients, recommendations for dealing with patients with risk factors (smoking, sedentary lifestyle, unhealthy diet, excess body weight). Examples of medical records are provided. Reminders for patients are presented, including in the event of acute coronary syndrome and cerebrovascular accident. Recommendations and algorithm for remote questioning and consultation are presented.Guidelines are intended for doctors and paramedics of departments of medical prevention and health centers, paramedics of rural health posts.The materials presented can also be used by local doctors (internists, general practitioners, paramedics at rural health posts and health centers) when conducting preventive counseling for patients with risk factors of nonommunicable diseases, and when working with them to modify risk factors.
Epithelial Na+ Channel Activation after Bile Duct Ligation with Mineralocorticoid Receptor Blockade
Authors: Wang Xue-Ping , Mutchler Stephanie M. , Carrisoza-Gaytan Rolando , Nickerson Andrew J. , Baty Catherine J. , Al-Bataineh Mohammad , Vandevender Amber , Morimoto Tetsuji , Srinivasan Priyanka , Tan Roderick J. , Jurczak Michael J. , Satlin Lisa M. , Kashlan Ossama B. 
Published: July 2024

Key Points

Bile acids activate the epithelial Na+ channel (ENaC), which may lead to subsequent fluid retention in liver disease.Bile duct ligation with spironolactone increased ENaC-dependent Na+ and fluid retention without hormone-linked increased ENaC abundance.Counteracting bile acid ENaC activation may be effective for treating fluid retention in liver disease.

Background
Sodium and fluid retention in liver disease is classically thought to result from reduced effective circulating volume and stimulation of the renin-angiotensin-aldosterone system. However, evidence of fluid retention in patients without renin-angiotensin-aldosterone system activation suggests the involvement of additional mechanisms. In vitro, bile acids activate the epithelial Na+ channel (ENaC) found in the aldosterone-sensitive distal nephron. If this occurs in vivo, ENaC may become activated in liver disease even with antagonism of aldosterone signaling.

Methods
To test this, we performed bile duct ligation to induce liver disease and increase circulating bile acids in mice given spironolactone to antagonize aldosterone signaling. We analyzed effects on blood, urine, and body composition. We also determined the effects of taurocholic acid, a primary conjugated bile acid elevated in liver disease, on ion fluxes in microperfused rabbit collecting ducts.

Results
Bile duct ligation increased benzamil-sensitive natriuresis compared with sham, indicating ENaC activation. These effects were not explained by effects on ENaC expression, cleavage, or localization. Bile duct–ligated mice also gained significantly more fluid than sham-operated animals. Blocking ENaC reversed fluid gains in bile duct–ligated mice but had no effect in shams. In dissected collecting ducts from rabbits, which express ENaC, taurocholic acid stimulated net Na+ absorption.

Conclusions
Our results provide experimental evidence for a novel aldosterone-independent mechanism for sodium and fluid retention in liver disease.