Unraveling ice multiplication in winter orographic clouds via in-situ observations, remote sensing and modeling.

Recent years have shown that secondary ice production (SIP) is ubiquitous, affecting all clouds from polar to tropical regions. SIP is not described well in models and may explain biases in warm mixed-phase cloud ice content and structure. Through modeling constrained by in-situ observations and its synergy with radar we show that SIP in orographic clouds exert a profound impact on the vertical distribution of hydrometeors and precipitation, especially in seeder-feeder cloud configurations.

Wildfire and African dust aerosol oxidative potential, exposure and dose in the human respiratory tract.

Exposure to wildfire smoke and dust can severely affect air quality and health. Although particulate matter (PM) levels and exposure are well-established metrics linking to health outcomes, they do not consider differences in particle toxicity or deposition location in the respiratory tract (RT). Usage of the oxidative potential (OP) exposure may further shape our understanding on how different pollution events impact health.

SAFETRANS: a system for 3D visibility estimation and cloud cover detection.

The estimation of visibility is of significant importance in aviation safety and forms part of the measurements routinely collected in real time to provide safety guidelines and decisions. Our work concerns the creation and implementation of a lidar-based visibility estimation system as part of the SAFETRANS research program. We created a reproducible system to (1) support standard airport equipment, (2) serve simultaneously as a visibility meter and a ceilometer reporting on cloud cover, (3) offer increased accuracy and improved capabilities compared to standardized equipment currently in use while (4) requiring minimal user training to function.

Inpatient cardiovascular outcomes in patients with cancer affected by viral influenza infection.

Background: Influenza disproportionately affects individuals with underlying comorbidities. Long-term follow-up studies have shown that patients with cancer with influenza have higher mortality. However, very little is known about the in-hospital mortality and cardiovascular outcomes of influenza infection in cancer hospitalisations.

Inpatient cardiovascular outcomes in patients with cancer affected by viral influenza infection.

Background: Influenza disproportionately affects individuals with underlying comorbidities. Long-term follow-up studies have shown that patients with cancer with influenza have higher mortality. However, very little is known about the in-hospital mortality and cardiovascular outcomes of influenza infection in cancer hospitalisations.

Optical Coherence Tomography Angiography in Chiasmitis.

A 29-year-old girl presented complaining of acute bilateral visual loss associated with mild headache and retrobulbar pain. She was diagnosed with chiasmal optic neuritis caused by multiple sclerosis. Her visual acuity and visual field defect promptly improved after steroid therapy.

PREDICTIVE ROLE OF SWEPT SOURCE OCT ANGIOGRAPHY IN RELAPSING VOGT-KOYANAGI-HARADA DISEASE.

Purpose: The purpose of this study was to describe the optical coherence tomography (OCT) angiography findings as a predictive role in the chronic relapsing stage of Vogt-Koyanagi-Harada disease and its comparison with other imaging modalities such as fluorescein angiography, indocyanine-green angiography, and spectral domain OCT.

Methods: A 37-year-old woman from Bangladesh was diagnosed with Vogt-Koyanagi-Harada disease. She was evaluated 8 months before for a routine examination when she was in clinical remission.

Electronic retinal prosthesis for severe loss of vision in geographic atrophy in age-related macular degeneration: First-in-human use.

Background: To date there are yet no available approved therapies for Geographic Atrophy (GA) secondary to age-related macular degeneration (AMD).

Methods: Single site, non-randomized safety and efficacy study presenting the preliminary results in a cohort of five late stage AMD (GA) patients successfully implanted with the Argus II Retinal Prosthesis System (Second Sight Medical Products Inc., Sylmar, CA, USA).

Canadian Biomass Burning Aerosol Properties Modification during a Long-Ranged Event on August 2018.

The aim of this paper is to study the spatio-temporal evolution of a long-lasting Canadian biomass burning event that affected Europe in August 2018. The event produced biomass burning aerosol layers which were observed during their transport from Canada to Europe from the 16 to the 26 August 2018 using active remote sensing data from the space-borne system Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO). The total number of aerosol layers detected was 745 of which 42% were identified as pure biomass burning.

Optical Coherence Tomography Angiography Findings in Optic Nerve Sheath Meningioma.

A 46-year-old female with a history of 5 months of progressive painless visual loss in the left eye was found to have an optic nerve sheath meningioma. Optical coherence tomography angiography showed a reduction in the superficial capillary plexus density consistent with her visual field defect and peripapillary retinal nerve fiber layer thinning. Moreover, abnormalities in the choriocapillaris were found in the affected eye compared to the fellow eye.

Swept-source optical coherence tomography angiography vitreo-retinal segmentation in proliferative diabetic retinopathy.

Purpose: To identify a new cortical vitreous segmentation protocol for non invasive standardised investigation of Neovascularisation (NV) with detection of regression of NV activity in Proliferative Diabetic Retinopathy (PDR).

Design: Retrospective study.

Participants: One hundred and eighty-six eyes of 93 consecutive diabetic patients (mean age: 52.

Optical Coherence Tomography in a Cohort of Genetically Defined Hereditary Spastic Paraplegia: A Brief Research Report.

objective documentation of pathological changes in neurodegenerative disease is a major aim to possibly improve our ability to monitor disease progression and response to treatment. Temporal thinning of the retinal nerve fiber layer (RNFL) thickness shown by spectral domain optical coherence tomography (SD-OCT) has been reported in association with the complex forms in hereditary spastic paraplegia (HSP). We performed an assessment of the RNFL thickness in a group of HSP patients, including a longitudinal follow-up in a subgroup.

Near-infrared fundus autofluorescence in early age-related macular degeneration.

Purpose: To describe the patterns on near-infrared fundus autofluorescence in eyes affected by early age-related macular degeneration.

Design: Cross-sectional observational case series.

Participants: A total of 84 eyes of 84 patients suffering from early age-related macular degeneration (>63 μm but <125 μm drusen and no-to-mild retinal pigment epithelium abnormalities) were enrolled.

Bioaerosol detection over Athens, Greece using the laser induced fluorescence technique.

The challenge in today's bioaerosol monitoring is to retrieve real-time information on the qualitative and quantitative composition of the ambient air in bioparticles implicated to human health. A pilot study was conducted during March-May 2018 in Athens, Greece in order to detect bioparticles within the Planetary Boundary Layer (PBL) by implementing the LIF LiDAR (Laser-Induced Fluorescence Light Detection and Ranging) technique at an excitation wavelength of 266 nm in order to determine the major components' contribution on the total fluorescence LiDAR signals aloft (30-100 m above our site). The laboratory characterization of the prevalent pollen grains and fungal spores fluorescence signatures enabled through deconvolution the breaking down of the retrieved LIF LiDAR signals and unravelled each bioparticle's contribution.

Lidar algorithms and technique in 3D scanning for planetary boundary layer height and single-beam-single-pointing wind speed retrieval.

Planetary boundary layer height (PBLH) and wind speed measurement are most important to meteorology for accurate weather forecasting and also forecasting for personnel-human safety in public places such as airports, camps, cities, etc. According to the location of the measurements, weather phenomena can change PBLH and wind speed values in a small amount of time; and so, accurate measurement of those, especially in longer distances gathered with lower budgets, is most welcome from societies. Different techniques have been developed through the years in order to detect these parameters safely, with the most effective ones to be the expensive, radiosonde method for PBLH and the Doppler method for wind measurements, with in situ measurements.

Lidar algorithms in 3D scanning for atmospheric layering and planetary boundary layer height retrieval: comparison with other techniques: publisher's note.

This publisher's note amends the Funding section of Appl. Opt.57, 8199 (2018)APOPAI0003-693510.

Lidar algorithms in 3D scanning for atmospheric layering and planetary boundary layer height retrieval: comparison with other techniques.

The planetary boundary layer height (PBLH), of great importance in meteorology and atmospheric physics, is strongly correlated with the geographical location, the solar irradiance, the seasonal variations, and the variability of the weather phenomena. So far, several lidar techniques have been developed to detect the PBLH, besides the radio soundings, sodars, or other techniques. In this work we propose new algorithms to provide the PBLH in near real time using a three-dimensional lidar in vertical or slant pointing.

Optical Coherence Tomography Angiography Findings in Deficiency Optic Neuropathy.

A 44-year-old man was evaluated for bilateral progressive visual loss and diagnosed with vitamin B deficiency optic neuropathy. Optical Coherence Tomography Angiography features of optic nerve and macula showed a decrease in peripapillary and macular vessel density that correlated well with the areas of retinal nerve fibre layer thinning seen on OCT. Further studies are needed to evaluate the role of this new technology in the evaluation of toxic and metabolic optic neuropathy.

The effect of bevacizumab before vitrectomy for diabetic tractional retinal detachment demonstrated on optical coherence tomography angiography.

Purpose: To demonstrate the effect of intravitreal bevacizumab (IVB) on the size and vascularity of the fibro-vascular complex with the optical coherence tomography angiography (OCTA) before pars plana vitrectomy (PPV).

Methods: Observational case series of three eyes with active diabetic fibro-vascular complex and tractional retinal detachment (TRD) who underwent IVB (1.25 mg/0.

Live porcine thirty days delayed recovery surgery: Qualitative findings with the hypersonic vitrectomy.

Introduction: Qualitatively assess the possible delayed structural, macroscopic and microscopic changes in the neuro-retina, retinal vasculature, retinal pigment epithelium (RPE) and optic nerve head (ONH) after pars plana vitrectomy (PPV) surgery using a new hypersonic vitrector (HV).

Materials And Methods: Eight live porcine eyes underwent PPV using either the HV or a conventional pneumatic guillotine vitrector (GV). The un-operated fellow eye from each pig was used as an external control.

Segmented swept source optical coherence tomography angiography assessment of the perifoveal vasculature in patients with X-linked juvenile retinoschisis: a serial case report.

Purpose: To describe perifoveal microvascular changes occurring in X-linked juvenile retinoschisis (XLRS) using swept source optical coherence tomography angiography (SS OCTA).

Patients And Methods: This is a serial case report of three patients. Retrospective data of patients affected by XLRS were collected.

Lidar algorithms for atmospheric slant range visibility, meteorological conditions detection, and atmospheric layering measurements.

Visibility at airports has to do, in many ways, with flight and ground safety. We present a novel method and algorithms based on lidar measurements and signal noise subtraction to provide atmospheric layering and estimated visibility values for tower controllers and meteorologists as well as from the pilot's point of view, according to the International Civil Aviation Organization and World Meteorological Organization requirements.

From hygroscopic aerosols to cloud droplets: The HygrA-CD campaign in the Athens basin - An overview.

The international experimental campaign Hygroscopic Aerosols to Cloud Droplets (HygrA-CD), organized in the Greater Athens Area (GAA), Greece from 15 May to 22 June 2014, aimed to study the physico-chemical properties of aerosols and their impact on the formation of clouds in the convective Planetary Boundary Layer (PBL). We found that under continental (W-NW-N) and Etesian (NE) synoptic wind flow and with a deep moist PBL (~2-2.5km height), mixed hygroscopic (anthropogenic, biomass burning and marine) particles arrive over the GAA, and contribute to the formation of convective non-precipitating PBL clouds (of ~16-20μm mean diameter) with vertical extent up to 500m.

New Findings in Diabetic Maculopathy and Proliferative Disease by Swept-Source Optical Coherence Tomography Angiography.

Purpose: To describe the optical coherence tomography (OCT) angiography (OCTA) features of diabetic retinopathy.

Methods: Retrospective serial case reports were examined of patients who underwent routine clinical examination and OCTA with both DRI OCT Atlantis prototype and Triton Swept-Source OCT of the posterior pole and mid-periphery. When considered necessary, fluorescein fundus angiography (FFA) with OPTOS California wide-field imaging was performed.