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research-article | 30-November-2017

STIFFNESS MODULE AND COMPRESSION STRENGTH OF POLYMER-TREATED SAND

strain level. Moreover, the small-strain stiffness is an important parameter for various geotechnical design applications, including small-strain dynamic analysis such as those used to predict the soil behavior or soil–structure interaction during earthquakes, explosions, machine vibrations or traffic vibrations. Small-strain stiffness may also be used as an indirect indication of other soil parameters, as it (in many cases) correlates well to other soil properties. For example, when studying the

Maiasa MLHEM

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 1, 97–104

Article | 25-March-2018

THE IMPACT OF PRIMARY SUSPENSION STIFFNESS OF 2-AXLE BOGIE OF MKIII PASSENGER CAR ON ITS DYNAMICAL BEHAVIOUR

This article presents results of the study on the impact of stiffness in vehicle primary suspension for lateral direction kzy and longitudinal direction kzx. The study was carried out for 2-axle bogie of MKIII passenger car. The problem was solved by numerical tests performed with the simulation software for dynamics of vehicle-track system. Performed study consisted in varying both stiffness types through change of their values from 0.001 to 1000 times as compared to nominal value.

Krzysztof ZBOINSKI, Milena GOLOFIT-STAWINSKA

Transport Problems, Volume 13 , ISSUE 1, 135–146

Research Article | 12-February-2019

EFFECTS OF STAIRCASE ON THE SEISMIC BEHAVIOR OF RC MOMENT FRAME BUILDINGS

Abstract Staircase has a potential to change the seismic behavior of structures, but it is often neglected during design. In this research, effects of staircase in 5 groups including 27 models have been studied. Results show that staircase constructed with the use of RC slab, performs as a K-shaped bracing in longitudinal direction and as an inclined shear wall in transverse direction, so in both directions structural stiffness increases, period and lateral displacement of structure decrease

Azadeh NOORIFARD, Mohammad Reza TABESHPOUR

Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 4, 105–122

Review | 07-September-2016

Shear wave elastography with a new reliability indicator

Non-invasive methods for liver stiffness assessment have been introduced over recent years. Of these, two main methods for estimating liver fibrosis using ultrasound elastography have become established in clinical practice: shear wave elastography and quasi-static or strain elastography. Shear waves are waves with a motion perpendicular (lateral) to the direction of the generating force. Shear waves travel relatively slowly (between 1 and 10 m/s). The stiffness of the liver tissue can be

Christoph F. Dietrich, Yi Dong

Journal of Ultrasonography, Volume 16 , ISSUE 66, 281–287

research-article | 31-October-2020

STUDY ON BOLTED AND BLIND-BOLTED SINGLE SHEAR CONNECTIONS OF COLD-FORMED STEEL MEMBERS

not exceed 0.2 mm. The technology of these connections is described in more detail in [4] and [5]. Due to the higher cost of BOM fasteners compared to conventional bolted connections, blind bolts should be used only where it is necessary for technological reasons (cf. Fig. 1b) and, above all, due to the required stiffness of the connection (slip limitation). In other cases, when both sides access is possible (cf. Fig. 1c), ordinary bolted connections can be used. The use of M16 bolts i.a. in the

Szymon SWIERCZYNA

Architecture, Civil Engineering, Environment, Volume 13 , ISSUE 3, 45–60

Article | 10-April-2018

Study on The Mechanical Properties of Hydrostatic Guide-way

significantly if the position, width and depth of the ring are appropriate. It is reasoned that the carrying capacity and stiffness of hydrostatic guide-way are improved when a ring is set on its oil seal edge. The conclusion can be got that the new type hydrostatic guide-way has a better carrying capacity and stiffness because of the ring if its position, width and depth are appropriate.

Enxiu Shi, Rongshen Zhang, Hailong Wang

International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 66–71

research-article | 09-September-2021

Peripheral arterial response during haemodialysis – is two-dimensional speckle-tracking a useful arterial reactivity assessment tool?

Introduction Arterial stiffness is an important and widely accepted parameter in cardiovascular diseases (CVD). It influences several factors including hypertension(1), coronary artery disease(2), kidney failure(3), heart failure(4), atrial fibrillation(5), stroke(2), white matter injury(6), cognitive dysfunction(6), and dementia(6). In end-stage renal disease (ESRD) patients, increased arterial stiffness measured by pulse wave velocity (PWV) is a strong and independent predictor of CVD

Sergiusz Ustyniak, Ludomir Stefańczyk, Magdalena Kaczmarska, Ilona Kurnatowska, Maciej Goździk

Journal of Ultrasonography, Volume 21 , ISSUE 86, 213–218

Article | 26-August-2018

SENIOR COHOUSING IN CROSS-CUTTING RESEARCH

In girders with corrugated web, semirigid joints alter damping and vibrational frequency, which indirectly produces a change in the integrated stiffness of girders K, thus diversifying the magnitude of displacement amplitudes of forced vibration [4, 5, 6]. On the basis of investigations relying on the method of vibration measurements, rotational stiffness of semirigid end-plate connections was determined [2, 3]. Using two viscoelastic material models, namely the Voigt–Kelvin and the Hook–Voigt

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 21–31

Article | 27-August-2018

ANALYSIS OF OSCILLATORY MOTION OF SIN GIRDERS WITH SEMIRIGID JOINTS

In girders with corrugated web, semirigid joints alter damping and vibrational frequency, which indirectly produces a change in the integrated stiffness of girders K, thus diversifying the magnitude of displacement amplitudes of forced vibration [4, 5, 6]. On the basis of investigations relying on the method of vibration measurements, rotational stiffness of semirigid end-plate connections was determined [2, 3]. Using two viscoelastic material models, namely the Voigt–Kelvin and the Hook–Voigt

Witold BASIŃSKI

Architecture, Civil Engineering, Environment, Volume 9 , ISSUE 4, 55–65

Review Article | 30-March-2018

Clinical applications of spleen ultrasound elastography – a review

infected with hepatitis B virus or hepatitis C virus and in patients suffering from liver fibrosis, portal hypertension, esophageal varices or myelofibrosis. In this article, we review the role and current status of accessible qualitative ultrasound elastography methods, including recent advances in the evaluation of spleen stiffness and its clinical utility. As study results demonstrate, spleen stiffness correlates with liver fibrosis and is helpful in determining the level of fibrosis in the METAVIR

Rafał Mazur, Milena Celmer, Jurand Silicki, Daniel Hołownia, Patryk Pozowski, Krzysztof Międzybrodzki

Journal of Ultrasonography, Volume 18 , ISSUE 72, 37–41

Research paper | 18-May-2018

Effects of postural and cognitive difficulty levels on the standing of healthy young males on an unstable platform

Standing on an unstable platform requires continuous effort of the neuro-musculoskeletal system. The aim of the present study is to evaluate the ability to remain standing on an unstable platform at different levels of postural and cognitive difficulty. Healthy young males stood in the sagittal plane on an unstable platform supported by a pair of springs with modifiable stiffness. The balance test also assessed different levels of vision and cognitive function. Linear and nonlinear metrics of

Shahram Oliaei, Mohammed N. Ashtiani, Kamran Azma, Sandra Saidi, Mahmood-Reza Azghani

Acta Neurobiologiae Experimentalis, Volume 78 , ISSUE 1, 60–68

Research Article | 30-March-2017

MATHEMATICAL MODEL OF OSCILLATIONS OF BEARING BODY FRAME OF EMERGENCY AND REPAIR RAILCARS

frame of emergency and repair rail service car, taking into account the variability in section, mass, longitudinal stiffness, and bending stiffness. It allows for extension of the useful life of their operation, with special focus on vehicles owned by Joint-Stock Company

Galina KHROMOVA, Ziyoda MUKHAMEDOVA, Irina YUTKINA

Transport Problems, Volume 12 , ISSUE 1, 93–102

Article | 04-November-2019

INVESTIGATION OF DYNAMIC PROCESSES IN A GEARBOX WITH DEFECTS

Paulius BOGDEVIČIUS, Marijonas BOGDEVIČIUS, Olegas PRENTKOVSKIS

Transport Problems, Volume 14 , ISSUE 3, 5–16

research-article | 08-March-2021

Shear wave elastography detects novel imaging biomarkers of aromatase inhibitor–induced joint pain: a pilot study

Introduction Aromatase inhibitors (AIs) have become first-line standard adjuvant endocrine therapy for postmenopausal women with hormone receptor positive (HR+) breast cancer. Although outcomes have improved compared to tamoxifen(1), AI therapy has been associated with significant, activity-limiting musculoskeletal symptoms including arthralgia, myalgia, and joint stiffness, collectively called AI-associated arthralgias (AIA)(2,3). Among the most commonly reported side effects experienced by

Jessica A. Martinez, Mihra S. Taljanovic, Russell S. Witte, Andres A. Nuncio Zuniga, Betsy C. Wertheim, C. Kent Kwoh, Brian A. Goldstein, Denise J. Roe, Pavani Chalasani

Journal of Ultrasonography, Volume 21 , ISSUE 84, 1–6

Original Paper | 31-January-2019

Multifocal fatty liver disease, insulin resistance and carotid atherosclerosis: exploring the interrelated relationship

fasting blood glucose, lipid profile, transaminases, serum insulin, glycated hemoglobin, Homeostatic Model Assessment of Insulin Resistance, high-sensitivity C-reactive protein and liver stiffness in Fibroscan. Results: Patients with multifocal fatty liver showed a statistically significant higher values of serum transaminases, markers of insulin resistance, high-sensitivity C-reactive protein, and neutrophil lymphocyte ratio (p <0.05). Lipid profile parameters were significantly higher (p <0.05

Amr Shaaban Hanafy, Sherief Abd-Elsalam, Ayman F. Ahmed, Mohammed M. Dawoud

Journal of Ultrasonography, Volume 18 , ISSUE 75, 302–309

Review | 29-June-2016

Introduction to ultrasound elastography

For centuries tissue palpation has been an important diagnostic tool. During palpation, tumors are felt as tissues harder than the surrounding tissues. The significance of palpation is related to the relationship between mechanical properties of different tissue lesions. The assessment of tissue stiffness through palpation is based on the fact that mechanical properties of tissues are changing as a result of various diseases. A higher tissue stiffness translates into a higher elasticity modulus

Andrzej Nowicki, Katarzyna Dobruch-Sobczak

Journal of Ultrasonography, Volume 16 , ISSUE 65, 113–124

research-article | 08-October-2021

STUDY ON THE INFLUENCE OF STIFFNESS OF BEAM–COLUMN CONNECTIONS ON THE SEISMIC BEHAVIOR OF COMPOSITE MOMENT RESISTING FRAMES

. Therefore, a simplified approach for the calculation of the behavior factor R of composite moment resisting frames has been proposed in this study. 2. CLASSIFICATION OF CONNECTIONS The composite connections are classified in Eurocode 4 [16] according to three characteristics [19] their stiffness, strength and ductility. This classification depends on the stiffness and strength properties of the adjacent cross-section beams (Eurocode 3) [20]. 2.1. Classification by stiffness The degree of connection J

Ahmed KHEMIS, Messaoud TITOUM, Aida MAZOZ, Amar LOUZAI

Architecture, Civil Engineering, Environment, Volume 14 , ISSUE 3, 55–67

Article | 10-April-2018

A New High-Precision Mode Acceleration Method for Calculating Frequency Response of Non-Classically Damped Systems

correct the modal truncation problem of model displacement method. The property given in the study shows that this correcting method can reduce the high-order modes that can’t be calculated to the lower-order modes that are easier to be computed. And the proposed method can also solve the problem causing by the singularity of stiffness matrix. The result of case given in the article shows that it can improve the accuracy of harmonic response effectively compared model displacement.

Jingfang Shen, Peng Wang

International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 152–156

Article | 24-November-2017

THE CONSTRUCTIVE SOLUTION AND CALCULATION OF ELEMENTS OF THE UNIFIED MODULE OF THE MOBILE BRIDGE OVERCROSSING

geometrical sizes, and also for different values of flexural stiffness properties of the plate and reinforcing elements. The calculation of the spatial frame of the bridge overcrossing is performed by the precise analytical method of relocation taking into account the bend and torsion of its elements.

Adil KADYROV, Kyrmyzy BALABEKOVA, Aleksandr GANYUKOV,, Serik AKHMEDIYEV

Transport Problems, Volume 12 , ISSUE 3, 59–69

Article | 01-June-2016

DESIGN OF SMART ROBOT FOR WRIST REHABILITATION

for wrist rehabilitation is designed. This robot is intended for repetitive exercises without therapist intervention. Hold the two sets of wrist movement: flexion/extension and radial/ulnar derivation. Distinguished by its compact mechanism design, the developed wrist rehabilitation robot (HRR) offers high stiffness with a total absence of any friction and backlash. Based on EMG signal, the smart robot can understand the patient pain degree. Two features extractions are used to estimate the pain

Ismail Ben Aabdallah, Yassine Bouteraa, Chokri Rekik

International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 1029–1053

research-article | 30-November-2018

NUMERICAL ANALYSIS OF THE RESPONSE OF PILE-RAFT SYSTEMS CONSIDERING THE APPLICATION OF CEMENT AND POLYPROPYLENE FIBER TREATMENT

inclusions significantly increase the ultimate strength and stiffness of sands. Puppala and Musenda [12] investigated the effectiveness of fiber reinforcement on strength, swell and shrinkage characteristics of expansive clays. Miller and Rifai [13] focused on the impact of fiber reinforcement on workability, compaction characteristics, hydraulic conductivity and development of desiccation cracks in compacted clay samples. Consoli et al. [14] studied the behavior of polypropylene-fiber-reinforced sand

Ali HASANZADEH

Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 3, 81–92

research-article | 15-June-2020

Sonoelastic response of median nerve to rehabilitation in carpal tunnel syndrome

the median nerve, and another one of similar size over the slab (Fig. 2). The stiffness of the median nerve was assessed by strain index (SI) that was internally calculated by the built-in software of the scanner as the ratio of the longitudinal strains averaged over the ROIs selected within the slab pad (SP) and the median nerve (MN), and automatically shown on the screen. The SI measurements were repeated 5 times at different decompression phases, and the resultant average was tabulated for each

Yasemin Durum Polat, Elif Aydın, Fikriye Sinem Ince, Mehmet Bilgen

Journal of Ultrasonography, Volume 20 , ISSUE 81, e90–e94

research-article | 15-June-2020

Ultrasonography of vulnerable atherosclerotic plaque in the carotid arteries: B-mode imaging

Andrzej Fedak, Katarzyna Ciuk, Andrzej Urbanik

Journal of Ultrasonography, Volume 20 , ISSUE 81, e135–e145

Original Paper | 13-September-2016

New aspects in shear-wave elastography of prostate cancer

for which both a histological assessment and an elastometric result (tissue stiffness in kPa) were available:according to the histology 589 were benign and 205 were malignant. Tissue elasticity was found to be weakly correlated with patient’s age, PSA level and gland volume. ROC analysis showed that, for the set of results acquired, elastometry did not fulfi l literature claims that it could identify malignant neoplasia with high sensitivity and specifi city. However, it did show promise in

Markus Porsch, Johann Jakob Wendler, Uwe-Bernd Liehr, Anke Lux, Martin Schostak, Maciej Pech

Journal of Ultrasonography, Volume 15 , ISSUE 60, 5–14

Case report | 25-January-2018

Leptomeningeal Carcinomatosis: Cerebral spinal fluid tumours.

the meninges to become irritated causing patients to exhibit signs of photophobia, neck stiffness, neurological decline and cranial nerve defects. LC has a significant morbidity and mortality rate with a median survival of 4-6 weeks if untreated and 2-3 months if treated. Diagnosis is based on analysis of the cerebral spinal fluid, through detection of positive cytology of LC tumour cells, elevated protein and CSF pressures. Magnetic resonance imaging findings identify areas of meningeal

Megan Stone

Australasian Journal of Neuroscience, Volume 26 , ISSUE 2, 11–14

research-article | 18-December-2020

Elasticity of the coracohumeral ligament in patients with frozen shoulder following rotator interval injection: a case series

a significant recovery of shoulder range of movement(5,11,12). Recent studies have also shown that the stiffness of the CHL can be assessed using shear wave elastography(13–15). Shear wave elastography is a relatively new technique to non-invasively provide quantitative information regarding tissue elasticity in real time based on their viscoelastic properties. The ultrasound system propagates shear waves into tissues and assesses their elastic modulus. This has been used in a variety of

David McKean, Siok Li Chung, Rebecca te Water Naudé, Bernard McElroy, Jonathan Baxter, Aniruddha Pendse, Joseph Papanikitas, James Teh, Richard Hughes

Journal of Ultrasonography, Volume 20 , ISSUE 83, 300–306

research-paper | 18-June-2021

Ultrasound shear wave elastography of the anterior talofibular and calcaneofibular ligaments in healthy subjects

expressed as a color bar (elastogram) on the US screen, either in velocity (meters/second) or units of pressure (kilopascals). On the color elastograms, red is usually defined for encoding hard consistency, blue encodes soft consistency, and green and yellow encode intermediate stiffness. SWE could serve as the basis of a novel functional test of lateral ankle ligament healing after ankle sprain. It would differentiate the ligaments that are healing normally from those that will heal without restoration

Lana H. Gimber, L Daniel Latt, Chelsea Caruso, Andres A. Nuncio Zuniga, Elizabeth A. Krupinski, Andrea S. Klauser, Mihra S. Taljanovic

Journal of Ultrasonography, Volume 21 , ISSUE 85, e86–e94

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