The Biomechanical Aetiology of the So-Called Idiopathic Scoliosis. The Role of Gait and Standing at “Ease” on the Right Leg in the Development of the Deformity

Karski, T; Karski, Jacek

doi:10.4236/ss.2014.52008

Cited by 18 publications

(4 citation statements)

References 2 publications

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“…Controlling factors can be determined, such as the rate of chemical reactions and the mass transfer mechanism. In this study, the PFO [30], PSO [31], and intra-particle diffusion [32] models were used to evaluate the adsorption of different concentrations of CPX on F Zn . The lineal equations of the PFO and PSO models can be expressed as follows:…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

et al. 2021

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This study aimed to understand the adsorption process of cephalexin (CPX) from aqueous solution by a biochar produced from the fiber residue of palm oil. Scanning electron microscopy, Fourier transform infrared spectroscopy, Boehm titration, and the point of zero charge were used to characterize the morphology and surface functional groups of the adsorbent. Batch tests were carried out to evaluate the effects of the solution pH, temperature, and antibiotic structure. The adsorption behavior followed the Langmuir model and pseudo-second-order model with a maximum CPX adsorption capacity of 57.47 mg g−1. Tests on the thermodynamic behavior suggested that chemisorption occurs with an activation energy of 91.6 kJ mol−1 through a spontaneous endothermic process. Electrostatic interactions and hydrogen bonding represent the most likely adsorption mechanisms, although π–π interactions also appear to contribute. Finally, the CPX removal efficiency of the adsorbent was evaluated for synthetic matrices of municipal wastewater and urine. Promising results were obtained, indicating that this adsorbent can potentially be applied to purifying wastewater that contains trace antibiotics.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

et al. 2021

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“…To determine the adsorption mechanism of PNP uptake by TU-P(AN-co-AA) and possible rate-controlling steps, pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic models were used to test the experimental data. The linearized forms of kinetic models employed were represented as in Equations ( 7)-( 9), (Lagergren 1898;Weber & Morris 1963;Ho 2006).…”

Section: Adsorption Kinetic Studymentioning

confidence: 99%

Sequestration of p-nitrophenol from liquid phase by poly(acrylonitrile-co-acrylic acid) containing thioamide group

Soo

Abdullah

Jamil

et al. 2021

Water Science and Technology

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In this paper, the adsorptive performance of synthesized thiourea (TU) modified poly(acrylonitrile-co-acrylic acid) (TU-P(AN-co-AA)) polymeric adsorbent capturing p-nitrophenol (PNP) from aqueous solution was investigated. The TU-P(AN-co-AA) was synthesized via the redox polymerization method with acrylonitrile (AN) and acrylic acid (AA) as monomers and modified chemically with thiourea (TU). Characterization analysis with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), CHNS, zeta potential measurement, Brunauer–Emmett–Teller (BET) surface analysis and thermal analyses were carried out to determine the morphology and physico-chemical properties of synthesized polymer. The characterization results had indicated successful surface modification of polymer with TU. The performance of TU-P(AN-co-AA) in removal of PNP were investigated under various experimental parameters (adsorbent dosage, initial adsorbate concentration, contact time and temperature). The results had demonstrated that the Freundlich isotherm model and pseudo-second-order kinetic model best described the equilibrium and kinetic data, respectively. Thermodynamic studies had showed that the uptake of PNP by TU-P(AN-co-AA) was spontaneous and exothermic in nature. The results from the regeneration studies suggested that the TU-P(AN-co-AA) polymer is a reusable adsorbent with great potential in removing PNP from wastewater.

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“…The erect position requires e cient central processing of multisensorial information provided by cortical, subcortical, and medullary integration, especially somatic input [7]. The spine affected by scoliosis exhibits perceptual impairments and de cits in sensorimotor adaptation and balance control [8,9]. Lack of necessary range of motion (RoM) can decrease the effectiveness of hip and ankle joint strategies.…”

Section: Introductionmentioning

confidence: 99%

Hip-related Functional Limitations in Individuals With Idiopathic Scoliosis: a Controlled Trial

ÇELİK,

ŞENOL,

DEMİRKIRAN

et al. 2024

Preprint

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Background Since scoliosis is a three-dimensional deformity, it causes some movement limitations in the spine and related joints. However, functional limitations associated with scoliosis-related hip joint involvement are the subject of research.Aims This study aims to investigate the physical characteristics and functional limitations associated with idiopathic scoliosis (IS), focusing on hip joint.Methods Participants with IS and a control group were assessed using manual goniometry for hip joint RoM, indirect methods for lumbar mobility, the Foot Posture Index (FPI) for foot posture, the Trendelenburg sign within the single leg squat (SLS) test for muscle strength, the Y-Balance test (YBT) for balance, the hip joint position sense (JPS) test for proprioception, and the Lower Extremity Functional Scale (LEFS) for functional status.Results Individuals with scoliosis exhibited limitations in hip joint RoM, particularly in flexion, extension, abduction, adduction, and internal rotation compared to controls.Lumbar mobility was reduced in the scoliosis group. The SLS and Y-Balance tests showed decreased scores in the posterior direction. Scoliosis participants had a tendency towards pronated foot posture. Hip JPS did not differ significantly between the groups. Muscle strength, as indicated by the Trendelenburg sign, was weaker in the scoliosis group. LEFS scores were lower in the scoliosis group but lacked clinical significance.Conclusion However, the observed differences were relatively small and may not have significant clinical implications. Future research should consider specific curve patterns of scoliosis and employ more advanced measurement techniques for enhanced reliability.

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The Biomechanical Aetiology of the So-Called Idiopathic Scoliosis. The Role of Gait and Standing at “Ease” on the Right Leg in the Development of the Deformity

Abstract: ABSTRACT

Cited by 18 publications

References 2 publications

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

Sequestration of p-nitrophenol from liquid phase by poly(acrylonitrile-co-acrylic acid) containing thioamide group

Hip-related Functional Limitations in Individuals With Idiopathic Scoliosis: a Controlled Trial

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