298,158 results match your criteria Laser Revision of Scars


The impacts of laser zona thinning on hatching and implantation of vitrified-warmed mouse embryos.

Lasers Med Sci 2018 Dec 13. Epub 2018 Dec 13.

National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China.

Embryo vitrification has advantages in assisted reproduction yet it also induces zona hardening. Laser zona thinning (LZT) is considered as a solution yet its efficacy and security have not been well studied. In this study, we used vitrified-warmed morulae from 2-month-old and 10-month-old ICR female mice as model to investigate the impacts that LZT treatment brings to the in vitro hatching process and implantation by analyzing hatching rate, implantation rate, and blastocyst quality. Read More

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December 2018
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Low-level laser therapy versus trunk stabilization exercises on sternotomy healing after coronary artery bypass grafting: a randomized clinical trial.

Lasers Med Sci 2018 Dec 13. Epub 2018 Dec 13.

Department of Physical Therapy for Internal Medicine, Faculty of Physical Therapy, Cairo University, Giza, Egypt.

The aim of this study was to investigate the effects of low-level laser therapy (LLLT) versus trunk stabilization exercises on sternotomy healing following coronary artery bypass grafting (CABG) surgery. Forty-five male patients who had acute sternal instability post-CABG surgery in the age range of 45-65 years were divided randomly into three equal groups (n = 15). The laser group received LLLT, while the exercise group received trunk stabilization exercises. Read More

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December 2018
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Isolation of living apical and basal cell lineages of early proembryos for transcriptome analysis.

Plant Reprod 2018 Dec 13. Epub 2018 Dec 13.

State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.

Plant zygotes usually undergo asymmetrical cell division, giving rise to the formation of two daughter cells with distinct developmental cell fate. The small apical cell will develop into the major part of embryo proper, whereas the larger basal cell will divide to form a transient suspensor. Thus, the apical and basal cell lineages are an excellent model to study cell fate determination in relation to zygote polarity. Read More

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December 2018

Experimentally determined trace element partition coefficients between hibonite, melilite, spinel, and silicate melts.

Data Brief 2018 Dec 27;21:2447-2463. Epub 2018 Oct 27.

Institute for Mineralogy, University of Münster, Corrensstrasse 24, 48149 Münster, Germany.

This article provides new data on mineral/melt partitioning in systems relevant to the evolution of chondrites, Calcium Aluminum-Rich Inclusions (CAI) in chondrites and related meteorites. The data set includes experimentally determined mineral/melt partition coefficients between hibonite (CaAlO), melilite (Ca(Al,Mg)SiO), spinel (MgAlO) and silicate melts for a wide range of trace elements: Sc, Ti, V, Cr, Co, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Zr, Nb, Rh, Cs, Ba, La, Ce, r, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Pb, Th and U. The experiments were performed at high temperatures (1350 °C < < 1550 °C) and ambient pressure. Read More

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December 2018

Contemporary Surgical Management of Deep-Seated Metastatic Brain Tumors Using Minimally Invasive Approaches.

Front Oncol 2018 28;8:558. Epub 2018 Nov 28.

Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, United States.

A subset of metastatic brain tumors occurs in deep-seated locations. Accessing and resecting these lesions can be associated with significant morbidity because it involves large craniotomies, extensive white matter dissection, prolonged retraction, and risk of inadvertent tissue injury. As a result, only palliative treatment options are typically offered for these lesions including observation, needle biopsies, and/or radiation therapy. Read More

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November 2018
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Pacemaker system replacement under local anesthesia allowing MRI access 7 years after the initial surgery: Two case reports.

J Rural Med 2018 Nov 29;13(2):185-187. Epub 2018 Nov 29.

Department of Cardiovascular Surgery, Shonai Amarume Hospital, Japan.

Older pacemaker systems, which are magnetic resonance imaging (MRI) incompatible, require replacement with compatible systems when patients are in need of MRI. Replacement involves extraction of the pacing lead, which is usually done with a laser sheath under general anesthesia. We report two cases of complete pacing system replacements allowing patient access to MRI. Read More

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November 2018

Oxidative stress induced by carboplatin promotes apoptosis and inhibits migration of HN-3 cells.

Oncol Lett 2018 Dec 10;16(6):7131-7138. Epub 2018 Oct 10.

Department of Otolaryngology-Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye and ENT Hospital of Fudan University, Shanghai 200031, P.R. China.

Laryngeal squamous cell carcinoma (LSCC) is currently a serious public health problem in China; thus, it is urgent to identify effective treatment strategies for this disease. Previous studies demonstrated that reactive oxygen species (ROS) serve important roles in the apoptosis of LSCC cells. It has also been indicated that carboplatin (CBDCA), a second-generation platinum compound with broad antineoplastic properties, is able to induce oxidative stress to produce ROS, which in turn promotes apoptosis. Read More

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December 2018

The Effects of Chromium Supplementation on Gene Expression of Insulin, Lipid, and Inflammatory Markers in Infertile Women With Polycystic Ovary Syndrome Candidate for Fertilization: A Randomized, Double-Blinded, Placebo-Controlled Trial.

Front Endocrinol (Lausanne) 2018 28;9:726. Epub 2018 Nov 28.

Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.

This study was performed to determine the effects of chromium supplementation on the gene expression of insulin, lipid, and inflammatory markers in infertile women with polycystic ovary syndrome (PCOS) who were candidate for fertilization (IVF). Forty women, aged 18-40 years, who had been selected for IVF were recruited in this randomized double-blinded, placebo-controlled trial. They ( = 20/group) were randomly assigned into intervention groups to take either 200 μg/day of chromium or placebo for 8 weeks. Read More

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November 2018

Retinal burns from laser pointers: a risk in children with behavioural problems.

Eye (Lond) 2018 Dec 13. Epub 2018 Dec 13.

Department of Ophthalmology, Bolton Hospitals NHS Foundation Trust, Bolton, UK.

Objective: To explore self-inflicted retinal burns from laser pointers in children.

Methods: Literature review of laser pointer retinal injuries in childhood and online survey of UK Consultant Ophthalmologists. A cohort of local children with self-inflicted injury is described. Read More

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December 2018

All-optical structuring of laser-driven proton beam profiles.

Nat Commun 2018 Dec 13;9(1):5292. Epub 2018 Dec 13.

Helmholtz-Zentrum Dresden - Rossendorf, Institute of Radiation Physics, Bautzner Landstr. 400, 01328, Dresden, Germany.

Extreme field gradients intrinsic to relativistic laser-interactions with thin solid targets enable compact MeV proton accelerators with unique bunch characteristics. Yet, direct control of the proton beam profile is usually not possible. Here we present a readily applicable all-optical approach to imprint detailed spatial information from the driving laser pulse onto the proton bunch. Read More

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December 2018

Space laser to map trees in 3D.

Authors:
Gabriel Popkin

Science 2018 Dec;362(6420):1226

Gabriel Popkin is a journalist in Mount Rainier, Maryland.

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December 2018

[Selective laser trabeculoplasty in African blacks].

J Fr Ophtalmol 2018 Dec 10. Epub 2018 Dec 10.

Service d'ophtalmologie, Chu Treichville, Abidjan, Côte d'Ivoire.

Introduction: The treatment of primary open angle glaucoma (POAG) is preferably medical. However, when medical therapy fails, alternative or complementary treatments may be considered. In this regard, selective laser trabeculoplasty is a widely popular procedural treatment whose accepted benefits have been very little studied in African blacks. Read More

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December 2018

The short-term outcome of laser in the management of female pelvic floor disorders: Focus on stress urine incontinence and sexual dysfunction.

Taiwan J Obstet Gynecol 2018 Dec;57(6):825-829

School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan. Electronic address:

Objective: Female pelvic floor disorders, including female stress urinary incontinence (SUI) or sexual dysfunction are notorious for affecting the quality of women's life. It is reported that laser therapy might result in collagen remodeling and improvement in tissue firmness. The study was conducted to evaluate the short-term outcome of female pelvic floor disorders treated by laser therapy. Read More

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December 2018

Probiotics Streptococcus salivarius 24SMB and Streptococcus oralis 89a interfere with biofilm formation of pathogens of the upper respiratory tract.

BMC Infect Dis 2018 Dec 13;18(1):653. Epub 2018 Dec 13.

Laboratory of Clinical Chemistry and Microbiology, IRCCS Orthopedic Institute Galeazzi, Milan, Italy.

Background: Infections of the ears, paranasal sinuses, nose and throat are very common and represent a serious issue for the healthcare system. Bacterial biofilms have been linked to upper respiratory tract infections and antibiotic resistance, raising serious concerns regarding the therapeutic management of such infections. In this context, novel strategies able to fight biofilms may be therapeutically beneficial and offer a valid alternative to conventional antimicrobials. Read More

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December 2018

The transcription factor PRO44 and the histone chaperone ASF1 regulate distinct aspects of multicellular development in the filamentous fungus Sordaria macrospora.

BMC Genet 2018 Dec 13;19(1):112. Epub 2018 Dec 13.

Lehrstuhl für Allgemeine und Molekulare Botanik, Ruhr-Universität Bochum, 44780, Bochum, Germany.

Background: Fungal fruiting bodies are complex three-dimensional structures that are formed to protect and disperse the sexual spores. Their morphogenesis requires the concerted action of numerous genes; however, at the molecular level, the spatio-temporal sequence of events leading to the mature fruiting body is largely unknown. In previous studies, the transcription factor gene pro44 and the histone chaperone gene asf1 were shown to be essential for fruiting body formation in the ascomycete Sordaria macrospora. Read More

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December 2018

Integrated Ground-Based SAR Interferometry, Terrestrial Laser Scanner, and Corner Reflector Deformation Experiments.

Sensors (Basel) 2018 Dec 12;18(12). Epub 2018 Dec 12.

School of Mechanical Electronic & Information Engineering, China University of Mining and Technology (Beijing), No. Ding-11, College Road, Haidian District, Beijing 100083, China.

An integrated sensor system comprised of a terrestrial laser scanner (TLS), corner reflectors (CRs), and high precision linear rail is utilized to validate ground-based synthetic aperture radar (GB-SAR) interferometric micro-displacement measurements. A rail with positioning accuracy of 0.1 mm is deployed to ensure accurate and controllable deformation. Read More

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December 2018

Nogier Reflex: Physiological and Experimental Results in Auricular Medicine-A New Hypothesis.

Medicines (Basel) 2018 Dec 12;5(4). Epub 2018 Dec 12.

Biochemist, Gerberweg 7, 24211 Preetz, Germany.

This editorial describes a new hypothesis concerning the nature and possible mechanisms of the Nogier reflex or reflex auriculo-cardiac (RAC; also vascular autonomic signal VAS). A multimodal concept for future RAC research is proposed. Read More

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December 2018

Characterization of Tunable Micro-Lenses with a Versatile Optical Measuring System.

Sensors (Basel) 2018 Dec 12;18(12). Epub 2018 Dec 12.

STMicroelectronics, 20010 Cornaredo (Mi), Italy.

In this work, we present the results of the opto⁻electro⁻mechanical characterization of tunable micro-lenses, Tlens, performed with a single-spot optical measuring system. Tested devices are composed of a transparent soft polymer layer that is deposited on a supporting glass substrate and is covered by a glass membrane with a thin-film piezoelectric actuator on top. Near-infrared optical low-coherence reflectometry is exploited for both static and low-frequency dynamic analyses in the time domain. Read More

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December 2018

Towards Efficient Implementation of an Octree for a Large 3D Point Cloud.

Authors:
Soohee Han

Sensors (Basel) 2018 Dec 12;18(12). Epub 2018 Dec 12.

Department of Geoinformatics Engineering, Kyungil University, Gyeongsan 38428, Korea.

The present study introduces an efficient algorithm to construct a file-based octree for a large 3D point cloud. However, the algorithm was very slow compared with a memory-based approach, and got even worse when using a 3D point cloud scanned in longish objects like tunnels and corridors. The defects were addressed by implementing a semi-isometric octree group. Read More

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December 2018

Excimer Laser Induced Spatially Resolved Formation and Implantation of Plasmonic Particles in Glass.

Nanomaterials (Basel) 2018 Dec 12;8(12). Epub 2018 Dec 12.

Laser-Laboratorium Göttingen e.V. Hans-Adolf-Krebs-Weg 1, D-37077 Göttingen, Germany.

Metallic nanoparticles are important building blocks for plasmonic applications. The spatially defined arrangement of these nanoparticles in a stable glass matrix is obtained here by nanosecond excimer laser irradiation at 193 nm. Two approaches are addressed: (1) Laser induced formation of particles from a dopant material pre-incorporated in the glass, (2) Particle formation and implantation by irradiation of material pre-coated on top of the glass. Read More

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December 2018

α-Chymotrypsin Immobilized on a Low-Density Polyethylene Surface Successfully Weakens Biofilm Formation.

Int J Mol Sci 2018 Dec 12;19(12). Epub 2018 Dec 12.

Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano 20133, Italy.

The protease α-chymotrypsin (α-CT) was covalently immobilized on a low-density polyethylene (LDPE) surface, providing a new non-leaching material (LDPE-α-CT) able to preserve surfaces from biofilm growth over a long working timescale. The immobilized enzyme showed a transesterification activity of 1.24 nmol/h, confirming that the immobilization protocol did not negatively affect α-CT activity. Read More

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December 2018

All-Fiber CO₂ Sensor Using Hollow Core PCF Operating in the 2 µm Region.

Sensors (Basel) 2018 Dec 12;18(12). Epub 2018 Dec 12.

Petrobras Research and Development Center (CENPES), 21941-915 Rio de Janeiro, Brazil.

A realistic implementation of an all-fiber CO₂ sensor, using 74 cm of hollow core photonic crystal fiber (HC-PCF) as the cavity for light/gas interaction, has been implemented. It is based on CO₂ absorbance in the 2 µm region. The working range is from 2% to 100% CO₂ concentration at 1 atm total pressure and the response time obtained was 10 min. Read More

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December 2018

Shear-Assisted Laser Transfer of Metal Nanoparticle Ink to an Elastomer Substrate.

Materials (Basel) 2018 Dec 11;11(12). Epub 2018 Dec 11.

Optical Nanoprocessing Lab, Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Korea.

Selective laser sintering of metal nanoparticle ink is an attractive technology for the creation of metal layers at the microscale without any vacuum deposition process, yet its application to elastomer substrates has remained a highly challenging task. To address this issue, we introduced the shear-assisted laser transfer of metal nanoparticle ink by utilizing the difference in thermal expansion coefficients between the elastomer and the target metal electrode. The laser was focused and scanned across the absorbing metal nanoparticle ink layer that was in conformal contact with the elastomer with a high thermal expansion coefficient. Read More

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December 2018

Novel Biomaterials for Tissue Engineering 2018.

Int J Mol Sci 2018 Dec 9;19(12). Epub 2018 Dec 9.

Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas, Nikolaou Plastira 100, Heraklion, Crete, GR-70013, Greece.

The concept of regenerating tissues, with properties and functions that mimic natural tissues, has attracted significant attention in recent years. [.. Read More

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December 2018

Effects of Laser Texture Oxidation and High-Temperature Annealing of TiV Alloy Thin Films on Mechanical and Antibacterial Properties and Cytotoxicity.

Materials (Basel) 2018 Dec 8;11(12). Epub 2018 Dec 8.

School of Dentistry, China Medical University, Taichung 404, Taiwan.

Titanium dioxide and vanadium oxides have been applied extensively in industrial and medical fields. The objective of this study was to develop various composite structures of titanium and vanadium oxide (Ti-V-O) coatings on pure titanium through high-temperature annealing and laser texturing oxidation, separately; additionally, surface morphologies, tribological and hydrophilic properties, and antibacterial and biocompatibility abilities of these Ti-V-O coatings were evaluated. TiV alloy thin films were deposited on pure titanium and then annealed to form Ti-V-O coatings through thermal oxidation and laser texturing oxidation. Read More

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December 2018

Extrinsic Calibration of 2D Laser Rangefinders Using an Existing Cuboid-Shaped Corridor as the Reference.

Sensors (Basel) 2018 Dec 10;18(12). Epub 2018 Dec 10.

State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China.

Laser rangefinders (LRFs) are widely used in autonomous systems for indoor positioning and mobile mapping through the simultaneous localization and mapping (SLAM) approach. The extrinsic parameters of multiple LRFs need to be determined, and they are one of the key factors impacting system performance. This study presents an extrinsic calibration method of multiple LRFs that requires neither extra calibration sensors nor special artificial reference landmarks. Read More

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December 2018

Manufacturing Signatures of Injection Molding and Injection Compression Molding for Micro-Structured Polymer Fresnel Lens Production.

Micromachines (Basel) 2018 Dec 10;9(12). Epub 2018 Dec 10.

Department of Mechanical Engineering, Technical University of Denmark (DTU), 2800 Kgs. Lyngby, Denmark.

Injection compression molding (ICM) provides enhanced optical performances of molded polymer optics in terms of birefringence and transmission of light compared to Injection molding (IM). Nevertheless, ICM requires case-dedicated process optimization to ensure that the required high accuracy geometrical replication is achieved, particularly especially in the case of surface micro-features. In this study, two factorial designs of experiments (DOE) were carried out to investigate the replication capability of IM and ICM on a micro structured Fresnel lens. Read More

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December 2018

Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals.

Nanomaterials (Basel) 2018 Dec 7;8(12). Epub 2018 Dec 7.

The Institute of Spectroscopy of the Russian Academy of Sciences, 142190 Moscow, Russia.

The dual-mode emission and multicolor outputs in the time domain from core-shell microcrystals are presented. The core-shell microcrystals, with NaYF₄:Yb/Er as the core and NaYF₄:Ce/Tb/Eu as the shell, were successfully fabricated by employing the hydrothermal method, which confines the activator ions into a separate region and minimizes the effect of surface quenching. The material is capable of both upconversion and downshifting emission, and their multicolor outputs in response to 980 nm near-infrared (NIR) excitation laser and 252 nm, and 395 nm ultraviolet (UV) excitation light have been investigated. Read More

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December 2018

Determination of Milk Products in Ceramic Vessels of Corded Ware Culture from a Late Eneolithic Burial.

Molecules 2018 Dec 7;23(12). Epub 2018 Dec 7.

Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 779 00 Olomouc, Czech Republic.

In this study, a soil from two ceramic vessels belonging to Corded Ware culture, 2707⁻2571 B.C., found in a cremation grave discovered in Central Moravia, Czech Republic, was analyzed using matrix-assisted laser desorption/ionization⁻mass spectrometry (MALDI⁻MS) combined with advanced statistical treatment (principal component analysis, PCA, and orthogonal projection to latent structures discriminant analysis, OPLS-DA) and by enzyme-linked immunosorbent assay (ELISA). Read More

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December 2018

Deformation Analysis of a Composite Bridge during Proof Loading Using Point Cloud Processing.

Sensors (Basel) 2018 Dec 7;18(12). Epub 2018 Dec 7.

Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdansk, Poland.

Remote sensing in structural diagnostics has recently been gaining attention. These techniques allow the creation of three-dimensional projections of the measured objects, and are relatively easy to use. One of the most popular branches of remote sensing is terrestrial laser scanning. Read More

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December 2018

Role of photodynamic therapy using talaporfin sodium and a semiconductor laser in patients with newly diagnosed glioblastoma.

Authors:

J Neurosurg 2018 Dec 1:1-8. Epub 2018 Dec 1.

OBJECTIVEIn this study on the effectiveness and safety of photodynamic therapy (PDT) using talaporfin sodium and a semiconductor laser, the long-term follow-up results of 11 patients with glioblastoma enrolled in the authors' previous phase II clinical trial (March 2009-2012) and the clinical results of 19 consecutive patients with newly diagnosed glioblastoma prospectively enrolled in a postmarket surveillance (March 2014-December 2016) were analyzed and compared with those of 164 patients treated without PDT during the same period.METHODSThe main outcome measures were the median overall survival (OS) and progression-free survival (PFS) times. Moreover, the adverse events and radiological changes after PDT, as well as the patterns of recurrence, were analyzed and compared between the groups. Read More

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December 2018

Comparison of different treatment schemes in 5-ALA interstitial photodynamic therapy for high-grade glioma in a preclinical model: An MRI study.

Photodiagnosis Photodyn Ther 2018 Dec 10. Epub 2018 Dec 10.

Univ. Lille, INSERM, CHU Lille, U1189, ONCO-THAI, Image-Assisted Laser Therapy for Oncology, F-59000, Lille, France; Department of Neurosurgery, University Hospital, F-59000, Lille, France.

Background: There is currently no therapy that prevents high-grade glioma recurrence. Thus, these primary brain tumors have unfavorable outcomes. Recently, 5-ALA photodynamic therapy (PDT) has been proposed to delay relapse and is highly expected to have potential synergistic effects with the current standard of care. Read More

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December 2018

Characterization of sulfated polysaccharide from Laurencia obtusa and its apoptotic, gastroprotective and antioxidant activities.

Int J Biol Macromol 2018 Dec 10. Epub 2018 Dec 10.

Laboratoire de Développement Chimique, Galénique et Pharmacologique des Médicaments (LR12ES09), Unité de Pharmacologie Marine, Faculté de Pharmacie de Monastir, Université de Monastir, 5000 Monastir, Tunisia. Electronic address:

This study was designed to characterize the physico-chemical properties of the sulfated polysaccharide (SP) isolated from the red alga Laurencia obtusa and to evaluate its apoptotic, gastroprotective and antioxidant activities. The different macromolecular characteristics of SP were determined by size exclusion chromatography combined with multi-angle laser light-scattering detection (SEC-MALLS), Fourier transform infrared spectroscopy (FTIR) analysis and nuclear magnetic resonance spectroscopy (H NMR and C NMR). The native molecular weight of the extracted polysaccharide is high (≥336,900 g·mol). Read More

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December 2018

Chlorella-gold nanorods hydrogels generating photosynthesis-derived oxygen and mild heat for the treatment of hypoxic breast cancer.

J Control Release 2018 Dec 10. Epub 2018 Dec 10.

School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea. Electronic address:

Hypoxic tumors are rarely cured because their low oxygen environment restricts the cytotoxicity of many chemotherapeutics by blocking the production of intracellular reactive oxygen species. Inspired by the highly efficient production of oxygen as a waste product of chlorella photosynthesis, we developed an in situ rapidly gelling BSA-PEG-based hydrogel depot system that contains chlorella and gold nanorods, namely Chlorella AuNRs BSA-Gel. The entrapped chlorella in our gel efficiently generated a high level of oxygen and oxygenated hemoglobin via photosynthesis in response to 660-nm light in vitro and in vivo, respectively. Read More

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December 2018

Structures and Superhalogen Properties of PtCl (2 ≤ n ≤ 10) Clusters.

J Phys Chem A 2018 Dec 13. Epub 2018 Dec 13.

Laser ablation mass spectrometry was applied to study the cluster anions of Pt2Cln-. Among them, Pt2Cl6- and Pt2Cl9- were observed with remarkable intensities in mass spectrum. Collision-activated dissociation experiments were also performed for the two anions. Read More

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December 2018

Nanoscale Core-Shell Hyperbolic Structures for Ultralow Threshold Laser Action: An Efficient Platform for the Enhancement of Optical Manipulation.

ACS Appl Mater Interfaces 2018 Dec 13. Epub 2018 Dec 13.

Plasmonic material has been emerged with multi-functionalities for its remarkable tailoring light emission, reshaping density of states (DOS) and focusing subwavelength light. However, restricted by its propagation loss and narrowband resonance in nature, it is a challenge issue for plasmonic material to provide a broadband DOS to advance its application. Here, we develop a novel nanoscale core-shell hyperbolic structure that possesses a remarkably coupling effect inside the multishell nanoscale composite owing to a higher DOS and longer time of collective oscillations of the electrons than the plasmonic-based pure metal nanoparticles. Read More

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December 2018

Enhancing charge transfer with foreign molecules through femtosecond laser induced MoS defect sites for photoluminescence control and SERS enhancement.

Nanoscale 2018 Dec 13. Epub 2018 Dec 13.

Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0511, USA.

Defect/active site control is crucial for tuning the chemical, optical, and electronic properties of MoS2, which can adjust the performance of MoS2 in application areas such as electronics, optics, catalysis, and molecular sensing. This study presents an effective method of inducing defect/active sites, including micro/nanofractured structures and S atomic vacancies, on monolayer MoS2 flakes by using femtosecond laser pulses, through which physical-chemical adsorption and charge transfer between foreign molecules (O2 or R6G molecules) and MoS2 are enhanced. The enhanced charge transfer between foreign molecules (O2 or R6G) and femtosecond laser-treated MoS2 can enhance the electronic doping effect between them, hence resulting in a photoluminescence photon energy shift (reaching 0. Read More

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December 2018

A self-assembly study of PNA-porphyrin and PNA-BODIPY hybrids in mixed solvent systems.

Nanoscale 2018 Dec 13. Epub 2018 Dec 13.

Department of Chemistry, University of Crete, Laboratory of Bioinorganic Chemistry, Voutes Campus, 70013 Heraklion, Crete, Greece.

In this work a peptide nucleic acid (PNA) was covalently connected with two different chromophores, namely porphyrin and boron-dipyrromethene. To the best of our knowledge, this is the first example in the literature where a PNA unit is covalently linked to such chromophores. The self-assembly properties of the hybrids were examined through electron microscopy experiments by adopting the "good-bad" solvent self-assembly protocol. Read More

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December 2018

Microcirculation disorders of the oral cavity in patients with primary Raynaud's Phenomenon.

Pol Arch Intern Med 2018 Dec 13. Epub 2018 Dec 13.

INTRODUCTION Raynaud Phenomenon is a medical condition in which spasm of arteries cause episodes of reduced blood flow. Potential disorders in the microcirculation R2.1a of the oral mucosa may promote the occurrence of lesions. Read More

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December 2018

H-D analysis employing energy transfer from He metastable excited state in double pulse LIBS at low pressure He gas.

Anal Chem 2018 Dec 13. Epub 2018 Dec 13.

The laser induced breakdown spectroscopy (LIBS) experiment with a unique double pulse setup and operational procedure in low pressure (3 kPa) He ambient gas is performed for the study on the detection of light elements such as hydrogen (H) and deuterium (D) as well as elements of high excitation energies such as fluorine (F) and chlorine (Cl) which are usually difficult to be detected using ordinary LIBS technique. A nanosecond (ns) Nd:YAG laser operated in its fundamental wavelength with energy of 54 mJ is focused onto the Al target to generate the He plasma. Another picosecond (ps) Nd:YAG laser operated in its fundamental wavelength with energy of 2 mJ is focused onto the sample surface and activated 2 µs before the operation of ns laser. Read More

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December 2018

Evaluation of the performance of MALDI-TOF MS and DNA sequence analysis in the identification of mycobacteria species

Turk J Med Sci 2018 12 12;48(6):1351-1357. Epub 2018 Dec 12.

Department of Medical Microbiology, School of Medicine, Acıbadem University, İstanbul, Turkey

Background/aim: Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry is an alternative way of identifying mycobacteria via the analysis of biomolecules. It is being increasingly used in routine microbiology practice since it permits early, rapid, and cost-effective identification of pathogens of clinical importance. In this study, we aimed to evaluate the efficacy of phenotypic identification of mycobacteria by the MALDI-TOF MS MBT Mycobacteria Library (ML) 4. Read More

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December 2018

Structure-switching ML Ir(iii) coordination cages with photo-isomerising azo-aromatic linkers.

Chem Sci 2018 Nov 6;9(42):8150-8159. Epub 2018 Sep 6.

School of Chemistry , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK . Email:

Cyclotriguaiacylene has been functionalised with 3- or 4-pyridyl-azo-phenyl groups to form a series of molecular hosts with three azobenzene-type groups that exhibit reversible photo-isomerisation. Reaction of the host molecules with [Ir(C^N)(NCMe)] where C^N is the cyclometallating 2-phenylpyridinato, 2-(4-methylphenyl)pyridinato or 2-(4,5,6-trifluorophenyl)pyridinato results in the self-assembly of a family of five different [{Ir(C^N)}(L)] coordination cages. Photo-irradiation of each of the cages with a high energy laser results in → photo-isomerisation of the pyridyl-azo-phenyl groups with up to 40% of groups isomerising. Read More

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November 2018

Anion exchange in inorganic perovskite nanocrystal polymer composites.

Chem Sci 2018 Nov 30;9(42):8121-8126. Epub 2018 Aug 30.

Institute of Electronic Structure and Laser , Foundation for Research and Technology - Hellas , Heraklion , 71110 , Crete , Greece . Email: ; Email:

We demonstrate a facile, low-cost and room-temperature method of anion exchange in cesium lead bromide nanocrystals (CsPbBr NCs), embedded into a polymer matrix. The anion exchange occurs upon exposure of the solid CsPbBr NCs/PDMS nanocomposite to a controlled anion precursor gas atmosphere. The rate and extent of the anion exchange reaction can be controlled the variation of either the exposure time or the relative concentration of the anion precursor gas. Read More

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November 2018

Effects of femtosecond laser-assisted cataract surgery on dry eye.

Exp Ther Med 2018 Dec 15;16(6):5073-5078. Epub 2018 Oct 15.

Department of Ophthalmology, Air Force General Hospital, Beijing 100089, P.R. China.

The aim of this study was to investigate the effect of femtosecond laser-assisted cataract surgery (FLACS) on tear film and ocular surface function. Patients with age-related cataract who underwent phacoemulsification (phaco) in Air Force Aviation Medicine Research Institute Affiliation Hospital from January 2016 to December 2016 were randomly divided into two groups. Patients in experimental group (n=123, 150 eyes) received FLACS, while patients in phaco group (n=110, 150 eyes) underwent conventional coaxial micro-incision phaco and were implanted with foldable intraocular lens (IOL). Read More

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December 2018

Study of non-contrast helical computed tomography in evaluating holmium laser lithotripsy for urinary calculus.

Exp Ther Med 2018 Dec 19;16(6):4585-4589. Epub 2018 Sep 19.

Department of Ultrasound, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China.

The present study aimed to investigate the correlation between the parameters of non-contrast helical computed tomography (NCHCT) and the total energy of holmium laser lithotripsy, and establish a correlative mathematical model. From March 2016 to February 2017, 120 patients with a single urinary calculus were examined by NCHCT prior to holmium laser lithotripsy. The calculus location was confirmed, the CT value was measured and the volume of the calculus in the established three-dimensional reconstruction model was calculated. Read More

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December 2018

Thermal Image Enhancement through the Deconvolution Methods for Low-Cost Infrared Cameras.

Quant Infrared Thermogr J 2018 9;15(2):223-239. Epub 2018 May 9.

Dept. of Physics, University of Texas at Arlington, Arlington, TX 76019, USA.

An infrared (IR) thermal camera may provide a tool for real-time temperature monitoring for precise disease treatment using heat generated by light-induced photosensitisers, i.e. photothermal/ablation therapies. Read More

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May 2018
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Association of ACE2 genetic polymorphisms with hypertension-related target organ damages in south Xinjiang.

Hypertens Res 2018 Dec 12. Epub 2018 Dec 12.

Department of Cardiology, Shufu People's Hospital, Xinjiang Uygur Autonomous Region (XUAR), 844100, Kashgar Region, China.

Essential hypertension (EH) is a principal contributing factor in worldwide cardiovascular disease mortality. Although interventions that minimize environmental risk factors for EH are associated with reduced cardiovascular disease, such approaches are limited for individuals with high genetic EH risk. In this study, we investigated possible associations between ACE2 polymorphisms and hypertension-related target organ damages in south Xinjiang, China. Read More

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December 2018

Down-regulation of microRNA-216a confers protection against yttrium aluminium garnet laser-induced retinal injury the GDNF-mediated GDNF/GFRα1/RET signalling pathway.

J Biosci 2018 Dec;43(5):985-1000

Department of Ophthalmology, Jiangxi Pingxiang People's Hospital, Pingxiang 337055, People's Republic of China.

Retinal injury plays a leading role in the onset of visual impairment. Current forms of treatment are not able to ameliorate scarring, cell death and tissue and axon regeneration. Recently, microRNA-216a (miR-216a) has been reported to regulate snx5, a novel notch signalling pathway component during retinal development. Read More

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December 2018

Numerous asymptomatic dermal cysts: Diagnosis and treatment of steatocystoma multiplex.

Can Fam Physician 2018 Dec;64(12):892-899

Lecturer and staff dermatologist in the Division of Dermatology at the University of Toronto.

Objective: To provide family physicians with the information needed to recognize, diagnose, and discuss available treatment options for steatocystoma multiplex (SM).

Sources Of Information: A comprehensive PubMed search using as either a text word or a MeSH term was conducted, and articles reporting on treatment outcomes were included.

Main Message: Steatocystoma multiplex is a benign disorder often characterized by numerous asymptomatic dermal cysts on the trunk, arms, axillae, face, thighs, and scalp. Read More

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December 2018