28,221 results match your criteria thickness values

Retinal thickness and microvascular pathway in Idiopathic Rapid eye movement sleep behaviour disorder and Parkinson's disease.

Parkinsonism Relat Disord 2021 Jun 6;88:40-45. Epub 2021 Jun 6.

Department of Medical, Surgical Sciences and Advanced Technologies GF Ingrassia, Section of Neurosciences, University of Catania, Catania, CT, Italy. Electronic address:

Introduction: Retinal impairment has previously been described in Parkinson's Disease (PD), also in early stage of disease. Idiopathic Rapid-eye-movement sleep Behavior Disorder (iRBD) is considered the strongest marker in the diagnosis of "Prodromal PD". Thus, we evaluated the thickness of retinal layers and the microvascular retinal pattern in a group of iRBD patients compared to PD and healthy subjects (HCs). Read More

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Effects of ionizing radiation on surface properties of current restorative dental materials.

J Mater Sci Mater Med 2021 Jun 12;32(6):69. Epub 2021 Jun 12.

Department of Dentistry, Universidade Federal do Rio Grande do Norte (UFRN), Av. Salgado Filho, 1787, Lagoa Nova, Natal, RN, CEP: 59056-000, Brazil.

To investigate the impact of radiotherapy on surface properties of restorative dental materials. A conventional resin composite-CRC (Aura Enamel), a bulk-fill resin composite-BFRC (Aura Bulk-fill), a conventional glass ionomer cement-CGIC (Riva self cure), and a resin-modified glass ionomer cement-RMGIC (Riva light cure) were tested. Forty disc-shaped samples from each material (8 mm diameter × 2 mm thickness) (n = 10) were produced according to manufacturer directions and then stored in water distilled for 24 h. Read More

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Quantitative ultrasound to monitor the vascular response to tocilizumab in giant cell arteritis.

Rheumatology (Oxford) 2021 Jun 12. Epub 2021 Jun 12.

Department of Rheumatology and Immunology, University of Bern, Inselspital, Switzerland.

Objectives: To characterize the effect of ultra-short glucocorticoids followed by Tocilizumab monotherapy on the intima-media thickness (IMT) in GCA.

Methods: 18 GCA patients received 500mg methylprednisolone intravenously on days 0-2, followed by Tocilizumab (8mg/kg) intravenously on day 3 and thereafter weekly subcutaneous Tocilizumab injections (162 mg) over 52 weeks. Ultrasound of temporal (TA), axillary (AA) and subclavian (SA) arteries was performed at baseline, on days 2-3, at week 4, 8, 12, 24 and 52. Read More

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Interaction of CP levels in maternal and nursery diets, and its effect on performance, protein digestibility, and serum urea levels in piglets.

Animal 2021 Jun 8;15(7):100266. Epub 2021 Jun 8.

Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), 9090 Melle, Belgium; Department of Nutrition, Genetics and Ethology, Ghent University, Merelbeke, Belgium. Electronic address:

Reduced protein levels in nursery diets have been associated with a lower risk of postweaning diarrhea, but the interaction with CP levels in maternal diet on the performance of the offspring remains unclear. The objective of this study was to determine the effect of protein content in sow gestation and piglet nursery diets on the performance of the piglets until slaughter. This was studied in a 2 × 2 factorial trial (35 sows, 209 piglets), with higher or lower (H or L) dietary CP in sow diets (168 vs 122 g CP/kg) during late gestation. Read More

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Development of a Pilot-Scale HuskyJet Binder Jet 3D Printer for Additive Manufacturing of Pharmaceutical Tablets.

Int J Pharm 2021 Jun 8:120791. Epub 2021 Jun 8.

Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06084, USA; Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06084, USA. Electronic address:

This paper reports a custom-built binder jet 3D printer for pilot-scale manufacturing of pharmaceutical tablets. The printer is equipped with high-throughput piezoelectric inkjet print heads and allows direct control of several key process parameters, including the build layer thickness, amount of jetted liquid binder, and powder spreading rate. The effects of these parameters on the properties of the as-printed tablets were studied using a powder mixture of lactose monohydrate and Kollidon® VA64 (KL) and an aqueous binder containing 5% of KL. Read More

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[Optometric eye screening in schools : First epidemiological data for children and adolescents in grades 5-7].

Ophthalmologe 2021 Jun 10. Epub 2021 Jun 10.

Internationale Innovative Ophthalmochirurgie, Breyer Kaymak Klabe Augenchirurgie, Düsseldorf, Deutschland.

Background: Annually recurring optometric screening helps to identify children with increased axial growth and also to create awareness for wearing properly corrected glasses and for spending enough time outdoors, both of which are crucial for healthy eyes. The obtained biometric data help to expand the epidemiological information on myopia in schoolchildren, which is fundamental for the selection of the correct treatment.

Material And Methods: Contact-free biometry of the eye was used to assess central corneal thickness, anterior chamber depth, lens thickness and axial length. Read More

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Logistic Regression Model Using Scheimpflug-Placido Cornea Topographer Parameters to Diagnose Keratoconus.

J Ophthalmol 2021 18;2021:5528927. Epub 2021 May 18.

Istanbul University, Istanbul Faculty of Medicine, Department of Ophthalmology, Fatih/Capa, Istanbul 34093, Turkey.

Purpose: Diagnose keratoconus by establishing an effective logistic regression model from the data obtained with a Scheimpflug-Placido cornea topographer.

Methods: Topographical parameters of 125 eyes of 70 patients diagnosed with keratoconus by clinical or topographical findings were compared with 120 eyes of 63 patients who were defined as keratorefractive surgery candidates. The receiver operating character (ROC) curve analysis was performed to determine the diagnostic ability of the topographic parameters. Read More

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Changes of Neuroretinal Rim and Retinal Nerve Fiber Layer Thickness Assessed by Optical Coherence Tomography After Filtration Surgery in Glaucomatous Eyes.

Clin Ophthalmol 2021 3;15:2335-2344. Epub 2021 Jun 3.

Ludwig-Maximilians University, Eye Clinic, Campus Innenstadt, Munich, D-80336, Germany.

Purpose: Lowering the intraocular pressure (IOP) in patients with primary open-angle glaucoma (POAG) with filtration surgery can induce morphological changes to the bulbus and structures of the retina. In this study, we have evaluated changes of Bruch's membrane-based parameters and retinal nerve fiber layer (RNFL) derived by spectral-domain optical coherence tomography (SD-OCT) in eyes that have undergone glaucoma filtration surgery.

Patients And Methods: SD-OCT imaging of the optic nerve head (ONH) and of the RNFL was performed in 54 eyes of 54 patients with medically uncontrolled POAG before and after IOP-lowering surgery (trabeculectomy or deep sclerectomy). Read More

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A novel methodology for Groundwater Flooding Susceptibility assessment through Machine Learning techniques in a mixed-land use aquifer.

Sci Total Environ 2021 May 28;790:148067. Epub 2021 May 28.

Department of Earth, Environmental and Resources Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cinthia 21, Edificio 10, 80126 Naples, Italy.

Many areas around the world are affected by Groundwater Level rising (GWLr). One of the most severe consequences of this phenomenon is Groundwater Flooding (GF), with serious impacts for the human and natural environment. In Europe, GF has recently received specific attention with Directive 2007/60/EC, which requires Member States to map GF hazard and propose measures for risk mitigation. Read More

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assessment of periapical lesions created in sheep mandibles by using high resolution ultrasonography and cone beam computed tomography.

Dentomaxillofac Radiol 2021 Jun 10:20210048. Epub 2021 Jun 10.

Dept of Biostatistics, Faculty of Medicine, Hacettepe University, Ankara, Turkey.

Objectives: Providing ultrasound images of periapical lesions may be problematic depending on the thickness of the overlying cortical bone. Clinically, it is crucial to determine the cut-off value of overlaying bone thickness in terms of interference with ultrasound imaging in conjunction with assessment of changes in periapical jaw bone lesions. Our aim was to determine the minimum amount of overlaying buccal bone thickness of artificial periapical lesions in order to be visible by ultrasound imaging and to compare width, height, depth, surface area and volume measurements of detectable periapical lesions obtained from ultrasound and CBCT images. Read More

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Efficacy of anti-vascular endothelial growth factor agents for treating neovascular age-related macular degeneration in vitrectomized eyes.

PLoS One 2021 10;16(6):e0252006. Epub 2021 Jun 10.

Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea.

Purpose: To evaluate the efficacy of intravitreal anti-vascular endothelial growth factor (anti-VEGF) agents for treatment of neovascular age-related macular degeneration (nAMD) in vitrectomized eyes.

Methods: The medical records were reviewed of nAMD patients treated with anti-VEGF agents who previously underwent pars plana vitrectomy (PPV). PPV was performed with complete posterior vitreous detachment induction. Read More

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Direct Comparison of Three Buckling-Based Methods to Measure the Elastic Modulus of Nanobiocomposite Thin Films.

ACS Appl Mater Interfaces 2021 Jun 10. Epub 2021 Jun 10.

Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.

To engineer tunable thin-film materials, the accurate measurement of their mechanical properties is crucial. However, characterizing the elastic modulus with current methods is particularly challenging for sub-micrometer thick films and hygroscopic materials because they are highly sensitive to environmental conditions and most methods require free-standing films which are difficult to prepare. In this work, we directly compared three buckling-based methods to determine the elastic moduli of supported thin films: (1) biaxial thermal shrinking, (2) uniaxial thermal shrinking, and (3) the mechanically compressed, strain-induced elastic buckling instability for mechanical measurements (SIEBIMM) method. Read More

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Optical coherence tomography quantifying photo aging: skin microvasculature depth, epidermal thickness and UV exposure.

Arch Dermatol Res 2021 Jun 10. Epub 2021 Jun 10.

Department of Dermatology, Health Sciences Faculty, Zealand University Hospital, University of Copenhagen, Sygehusvej 10, 4000, Roskilde, Denmark.

Introduction: Photo aging predominantly occurs in the face, neck and hands due to UVA and UVB irradiation. It is associated with skin cancer and histological studies indicate thinning of the epidermis and elastosis occurs. Dynamic Optical coherence tomography (D-OCT) is a non-invasive imaging tool able to visualize the epidermis and upper dermis and its blood vessels as well as to evaluate epidermal thickness (ET) and blood flow. Read More

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Factors Associated with Carotid Atherosclerosis and Achilles Tendon Thickness in Japanese Patients with Familial Hypercholesterolemia: A Subanalysis of the Familial Hypercholesterolemia Expert Forum (FAME) Study.

J Atheroscler Thromb 2021 Jun 10. Epub 2021 Jun 10.

Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine.

Aims: Familial hypercholesterolemia (FH) is characterized by high low-density lipoprotein (LDL) cholesterol levels, xanthomas including Achilles tendon thickening, and premature coronary artery disease (CAD). Carotid intima-media thickness (IMT) is a well-established surrogate marker for CAD in FH and Achilles tendon thickening is a specific physical finding in patients with FH. The objective of the present study was to identify factors associated with carotid IMT and Achilles tendon thickness in FH heterozygotes on lipid-lowering therapy. Read More

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The effect of resin cement shade and restorative material type and thickness on the final color of resin-matrix ceramics.

J Prosthodont Res 2021 Jun 10. Epub 2021 Jun 10.

Department of Prosthodontics, Faculty of Dentistry, Near East University, Mersin10.

Purpose: This study aims to evaluate the effects of cement shade, restorative material type, and thickness on the final color of resin-matrix ceramics.

Methods: Ninety A2 shade resin-matrix ceramic specimens were prepared from Vita Enamic, GC Cerasmart, and Lava Ultimate at 0.5 and 1. Read More

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Evaluation of dry eye subtypes and characteristics using conventional assessments and dynamic tear interferometry.

Br J Ophthalmol 2021 Jun 9. Epub 2021 Jun 9.

Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, South Korea

Background/aims: To evaluate subtypes and characteristics of dry eye (DE) using conventional tests and dynamic tear interferometry, and to investigate determinants of disease severity in each DE subtype.

Methods: 309 patients diagnosed with DE and 69 healthy controls were prospectively enrolled. All eyes were evaluated using Ocular Surface Disease Index (OSDI), Schirmer's test I (ST1) and Meibomian gland dysfunction (MGD) grade were analysed. Read More

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A system review and meta-analysis of the treatment of acute angle-closure glaucoma under optical coherence tomography.

Ann Palliat Med 2021 May;10(5):5659-5670

Department of Ophthalmology, Affiliated Hospital of Hebei University, Baoding, China.

Background: A meta-analysis was conducted to investigate the value of treatment-related indicators of acute angle-closure glaucoma (AACG) based on optical coherence tomography (OCT) to evaluate the curative effect.

Methods: Articles on the treatment of AACG in clinical research of OCT published from January 2010 to June 2020 were retrieved from the PubMed, Web of Science, and Spring databases. RevMan 5. Read More

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Is pre-operative axillary ultrasound alone sufficient to determine need for axillary dissection in early breast cancer patients?

Medicine (Baltimore) 2021 May;100(19):e25412

Department of Surgery.

Abstract: Pre-operative status of axillary lymph node (ALN) in early breast cancer is usually initially assessed by pre-operative ultrasound, followed by ultrasound-guided needle biopsy (UNB) confirmation. Patients with positive nodal status will undergo axillary lymph node dissection (ALND), while those with negative nodal status will have sentinel lymph node biopsy. ALND is associated with higher morbidity than Sentinel lymph node biopsy. Read More

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Raman Confocal Microscopy and biophysics multi-parametric characterization of the skin barrier evolution with age.

J Biophotonics 2021 Jun 9:e202100107. Epub 2021 Jun 9.

"Lipides: Systèmes Analytiques et Biologiques" Lip(Sys)2 interdisciplinary unit, Faculty of Pharmacy, University Paris-Saclay, Châtenay-Malabry.

Skin aging is a multifactorial phenomenon that involves alterations at the molecular, cellular, and tissue levels. Our aim was to carry out a multiparametric biophysical and Raman characterization of skin barrier between individuals of different age groups (<24 and > 70 years old). Our results showed a significant decrease of lipids to proteins ratio overall the thickness of the SC and higher lateral packing in the outer part of the SC for elderly. Read More

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Visceral adiposity and inflammatory bowel disease.

Int J Colorectal Dis 2021 Jun 9. Epub 2021 Jun 9.

Department of Gastroenterology, Beaumont Hospital, Beaumont Rd, Dublin, Ireland.

Background: Rates of obesity are increasing worldwide, as is the incidence of inflammatory bowel disease (IBD). Obesity is now considered an inflammatory state. Visceral adiposity in particular may be associated with a more severe inflammatory phenotype in IBD. Read More

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Mismatch between midline shift and hematoma thickness as a prognostic factor of mortality in patients sustaining acute subdural hematoma.

Trauma Surg Acute Care Open 2021 21;6(1):e000707. Epub 2021 May 21.

Department of Neurology, University of São Paulo, São Paulo, Brazil.

Background: Acute subdural hematoma (ASDH) is a traumatic lesion commonly found secondary to traumatic brain injury. Radiological findings on CT, such as hematoma thickness (HT) and structures midline shift (MLS), have an important prognostic role in this disease. The relationship between HT and MLS has been rarely studied in the literature. Read More

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Effect of coating on the color and surface hardness of the surface of dental ceramics.

Dent Res J (Isfahan) 2021 17;18:18. Epub 2021 Mar 17.

Department of Physics, Universiti Putra Malaysia, Malaysia.

Background: The aim of this study was to investigate whether boron nitride (BN) and BN-chromium (BN-Cr) coatings applied with the sputtering method would change the characteristics of hardness and discoloration of the ceramic veneer surface.

Materials And Methods: In this experimental study, thirty disc-shaped cores (10 mm in diameter and 0.8 mm in thickness) were prepared. Read More

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Cleaner production of tamarind fruit shell into bio-mass derived porous 3D-activated carbon nanosheets by CVD technique for supercapacitor applications.

Chemosphere 2021 Jun 2;282:131033. Epub 2021 Jun 2.

Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, 5063, Norway.

This paper reported the successful preparation and characterization of bio-activated carbon nanosheets (ACNSs) synthesized from tamarind (tamarind indicia) fruits shells (TFSs) by employing Chemical Vapor Deposition (CVD) tubular furnace. The preparation of pure ACNSs and also potassium hydroxide (KOH) activated carbon nanosheets (K-ACNSs) were made through a pyrolysis process with Argon (Ar) gas as an inert gas at 800 °C for 2h 30min, followed by further purifications of K-ACNSs. The scanning electron microscope (SEM) images of ACNSs and K-ACNSs explored with and without pores respectively. Read More

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Detection of soil physical properties of reclaimed land in open-pit mining area: feasibility of application of ground penetrating radar.

Environ Monit Assess 2021 Jun 8;193(7):392. Epub 2021 Jun 8.

School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China.

In order to obtain the typical soil physical properties of reclaimed land more quickly and accurately, the South Dump of the China Coal's Antaibao Open-Pit Mine in Pingshuo was focussed on in this paper, and ground penetrating radar (GPR) technology was utilized to detect the soil physical properties of reclaimed land in the mining area. The soil profile sampling and GPR detection methods were used to acquire the data. The gravel content of surface soil was analyzed by counting the number of isolated gravel signals in GPR images. Read More

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Evaluation of the accuracy of orthodontic models prototyped with entry-level LCD-based 3D printers: a study using surface-based superimposition and deviation analysis.

Clin Oral Investig 2021 Jun 7. Epub 2021 Jun 7.

Department of Orthodontics, School of Dentistry, Unit of Orthodontics, University of Catania, Policlinico Universitario "Vittorio Emanuele, " Via Santa Sofia 78 95123, Catania, Italy.

Objectives: The objective of this study was to evaluate the accuracy of dental models prototyped via entry-level liquid crystal display (LCD) 3D printers.

Materials And Methods: Identical prototyped models were generated from a master digital file testing two entry-level LCD-based 3D printers and using one professional-grade 3D printer as gold standard (GS), with 50-µm and 100-µm layer thickness. Each 3D-printed model was scanned, and a specific 3D technology was used to perform surface-based superimposition and deviation analysis to evaluate trueness and precision. Read More

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Examination of the effects of COVID 19 on corneal endothelium.

Graefes Arch Clin Exp Ophthalmol 2021 Jun 7. Epub 2021 Jun 7.

Department Ophthalmology, Dicle University Medical Faculty, 21280, Sur/Dıyarbakır, Turkey.

Purpose: To demonstrate the effects of the disease on the corneal endothelium in individuals recovering from COVID-19 through specular microscopy.

Methods: Eighty individuals recovering from COVID-19 (group 1) and 72 healthy controls (group 2) were included in this prospective study. After examining visual acuity, refractive defect detection, anterior and posterior segment examinations, and specular microscopy measurements were calculated from images with at least 100 cells. Read More

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Sonographic assessment of cartilage damage at metacarpal head in rheumatoid arthritis: qualitative versus quantitative methods.

Rheumatology (Oxford) 2021 Jun 7. Epub 2021 Jun 7.

Rheumatology Unit, Polytechnic University of Marche, Jesi (Ancona), Italy.

Objective: To test the validity of the Outcome Measure in Rheumatology (OMERACT) semiquantitative score by comparing with a quantitative method in the sonographic (US) assessment of hyaline cartilage at the metacarpal head (MH) in patients with rheumatoid arthritis (RA) and healthy subjects (HS).

Methods: The hyaline cartilage from second to fifth MHs of both hands was scanned. Hyaline cartilage was scored semiquantitatively and quantitatively (by measuring cartilage thickness and comparing with reference values). Read More

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Physicochemical quality of twin layer solar tunnel dried tomato slices.

Heliyon 2021 May 24;7(5):e07127. Epub 2021 May 24.

Department of Agricultural Engineering, University of Kassel, Witzenhausen, Germany.

The objective of this experimental study was to evaluate the effect of twin layer solar tunnel drying on physicochemical quality of tomato slices. The novelty of this dryer is that it has two layers of trays unlike Hohenheim solar tunnel dryer which makes it to have drying capacity of more than two times compare to type hohenheim solar tunnel dryer with equal collector area. The experiment consists of two (tray position and drying position) factors with two levels of tray position (upper tray (samples exposed to direct solar radiation) and lower tray (samples are exposed to only heated air)) and three levels of drying position (collector out let,middle of the dryer and dryer out let) with three replications. Read More

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Conservation tillage and nutrient management practices in summer rice ( L.) favoured root growth and phenotypic plasticity of succeeding winter pea (L.) under eastern Himalayas, India.

Heliyon 2021 May 25;7(5):e07078. Epub 2021 May 25.

ICAR Research Complex for NEH Region, Umiam, Meghalaya 793103, India.

Low soil moisture during dry season, poor soil properties and lack of adequate crop varieties are the major constraints for sustainable intensification of eastern Himalayas in changing climate. Suitable varieties, tillage alteration and integrated nutrient management with emphasis on locally available crop residues/plant biomass may help addressing these issues. The role of minimum tillage (MT) and no-till (NT), and organic matter substitution on conferring of favourable root environment, improvement in morpho-physiology and subsequent productivity of the crops are not objectively studied in Himalayan ecosystems. Read More

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Fossil Ginkgoales cuticle fine details data from East Inner Mongolia, Northeast China.

Data Brief 2021 Aug 23;37:107163. Epub 2021 May 23.

Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China.

The data presented in this article are related to the research paper entitled "Cuticle ultrastructure of from Northeast China and its implication in Taxonomy and Palaeoenvironment" (Guignard et al. 2019 [1]. The data correspond to a study of the ultrastructural fine cuticle details of fossil (Ginkgoales) from the Lower Cretaceous Huolinhe Formation in Holingola of East Inner Mongolia, Northeast China. Read More

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