E.M.B.E.R. Home Protection

Despite the increased danger of wildfires in states such as California and Colorado, there is yet to exist a product that can autonomously extinguish the spot fires that ignite from windblown embers. This device could reduce countless civilian casualties and prevent millions of dollars in property damage. This is not to mention allowing homeowners to evacuate with a greater peace of mind. Mass ownership of this product would be analogous to the “herd immunity” of vaccines, where neighbors ultimately protect each other and save money through self-insurance. There are products on the market, generally in the commercial domain, that can protect a building from wildfire. However, these devices come at a high cost that eliminates even the upper-middle class household. The device we are building is unlike anything in current existence because it utilizes thermal imaging technology to reduce the water consumption related to firefighting. Through brainstorming and research, an understanding of the scope and specifications involved with this project was developed. These ideas were compiled and compared using various decision-making tools. After working our ideations into one solid design, we performed the necessary analyses and gathered parts and materials. The physical components were manufactured and assembled to create a stationary rotating device with a vertical array of sprinkler nozzles. Upon completion of the mechanical system, it was integrated with an electronic assembly that uses a single-board computer to analyze thermal imaging data from a FLIR camera, control rotation of the device, and dispense water in the appropriate direction

The use of drones during mass events

The concept of a mass event has been defined by the law on mass event security. The use of drones to monitor events involves numerous benefits. Surveillance provided by means of drones is particularly beneficial as far as large open areas are concerned. Unmanned aerial vehicles (UAVs) alert one to any issues in the crowd

Iodine-induced thyroid disorders in the practice of a cardiologist

This article deals with the question of the influence of preparations that contain pharmacological doses of iodine on the functional activity of the thyroid gland. In the practice of a cardiologist amiodarone and x-ray contrasting substances are often used that may induce thyroid disorders in many ways, followed by hypothyroidism and thyrotoxicosis development

THE ISSUE OF AGGRESSION IN PATIENTS WITH VENTRICULAR TACHYCARDIA WITH PULSE AND A SHORT EPISODE OF CARDIAC ARREST — A CASE OF A 68-YEAR-OLD MALE

   INTRODUCTION: Ventricular tachycardia (VT) is a life-threatening event. The role of the medical rescue team is to diagnose this disorder on the basis of resuscitation guidelines and general recommendations concern­ing ECG diagnoses. Patients with ventricular tachycardia, as a result of cerebral hypoxia, may react with aggression. In such situations, taking one’s medical history, conducting a physical examination or attempting emergency rescue operations may become difficult, or even impossible. OBJECTIVE: The objective of the paper is to demonstrate the issue of unintentional aggression that may occur in patients with ventricular tachycardia (VT) with a high heart rate and a short episode of cardiac arrest (CA), and the impact of such a disorder on attempted medical rescue operations. MATERIAL AND METHODS: The analysis of the case study was performed on the basis of medical documen­tation, i.e. an emergency dispatch order and an emergency medical services form. CASE DESCRIPTION: A medical emergency unit stationed at one of the substations in Łódź Province, 27 km away from a multi-disciplinary hospital, received a call from a medical dispatcher. The person calling emer­gency services requested the urgent arrival of an ambulance for her husband, who had suddenly passed out and was now lying on the kitchen floor showing no signs of life. In the course of the ambulance’s arrival at the location, the patient’s wife urged the ambulance to arrive soon, on account of her husband’s aggres­sive behaviour. CONCLUSIONS: Cardiac dysrhythmia and particularly ventricular tachycardia (VT) may constitute a serious health issue for the patient. The clinical picture may also vary across patients. An analysis of the case study demonstrates that medical personnel must be prepared to handle unconventional scenarios. The article shows that the procedure of cardioversion may be the only right choice when handling a patient with an unstable tachycardia

Applications of wavelets in the photoacoustic detection of trace gases with noisy signals

This paper shows that the use of filters based on the discrete wavelet transform (DWT) improves the sensitivity of photoacoustic systems for measurement of trace gases under conditions of unfavorable signal-to-noise ratio (SNR). To achieve this goal, a filter based on Meyer's DWT was designed and tested with simulated and measured signals. For the measurements, a system  for the detection of traces of sulfur hexafluoride in nitrogen using a pulsed CO2 laser was implemented. From the results it was obtained that the use of DWT had a very good performance for signals generated with low laser energies ( < 100 uJ) corrupted with impulsive electromagnetic noise

The Proterozoic Vazante hypogene zinc silicate district, Minas Gerais, Brazil: a review of the ore system applied to mineral exploration

The Proterozoic Vazante zinc silicate district in Minas Gerais, Brazil, hosts world-class hypogene willemite deposits in dolomitic rocks interbedded with siliciclastic rocks deposited in subtidal to supratidal environments. Willemite ore bodies are structurally controlled along regional NE-trending structures which are interpreted as being active during the Neoproterozoic Brasiliano orogeny. The hydrothermal alteration is characterized by an early stage of Fe-dolomite, which replaced the host dolomitic rocks, followed by precipitation of minor sphalerite and then hematite and willemite. Elements commonly enriched in the zinc ore include As, Ba, Be, Bi, Cd, Co, Fe, Ge, In, Mo, Ni, Sb, Se, U, V and W. Mineralogical, fluid inclusion and isotopic data indicates that mixing of S-poor metalliferous saline fluids with meteoric water favored the formation of willemite ore. Carbonaceous phyllites from the underlying thick siliciclastic sequence show evidence of early enrichment in zinc (and ore-related metals) and remobilization, respectively, prior to and during the Brasiliano orogenic event. This unit is interpreted as a possible source of ore-related elements. It is proposed that during the Brasiliano orogeny, hot (T > 170 degrees C) saline fluids (>15 wt % eq. NaCl) leached metals from siliciclastic source rocks and precipitated willemite ore in the overlying dolomitic sequence along structures that favored mixing with oxidizing meteoric water

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars

© 2022. The Author(s). Published by the American Astronomical Society. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.3847/1538-4357/ac4476We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ z ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3-8.0 keV fluxes F 0.3-8.0 ≳ 5 ×10-14 erg cm-2 s-1. Modeling the X-ray spectra with an absorbed power law, we derive power-law photon indices and 2-10 keV luminosities for the eight detected quasars. In addition to presenting sample properties for larger quasar population studies and for use in planning for future caustic-crossing events, we also identify three quasars of interest: a quasar that shows evidence of flux variability from previous ROSAT observations, the most closely separated individual lensed sources resolved by XMM-Newton, and one of the X-ray brightest quasars known at z > 3. These sources represent the tip of the discoveries that will be enabled by SRG/eROSITA.Peer reviewe

Gaia GraL: Gaia DR2 gravitational lens systems – VIII. A radio census of lensed systems

© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/We present radio observations of 24 confirmed and candidate strongly lensed quasars identified by the Gaia Gravitational Lenses working group. We detect radio emission from eight systems in 5.5 and 9 GHz observations with the Australia Telescope Compact Array (ATCA), and 12 systems in 6 GHz observations with the Karl G. Jansky Very Large Array (VLA). The resolution of our ATCA observations is insufficient to resolve the radio emission into multiple lensed images, but we do detect multiple images from 11 VLA targets. We have analysed these systems using our observations in conjunction with existing optical measurements, including measuring offsets between the radio and optical positions for each image and building updated lens models. These observations significantly expand the existing sample of lensed radio quasars, suggest that most lensed systems are detectable at radio wavelengths with targeted observations, and demonstrate the feasibility of population studies with high-resolution radio imaging.Peer reviewe

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VIII. A radio census of lensed systems

We present radio observations of 24 confirmed and candidate strongly lensed quasars identified by the Gaia Gravitational Lenses (GraL) working group. We detect radio emission from 8 systems in 5.5 and 9 GHz observations with the Australia Telescope Compact Array (ATCA), and 12 systems in 6 GHz observations with the Karl G. Jansky Very Large Array (VLA). The resolution of our ATCA observations is insufficient to resolve the radio emission into multiple lensed images, but we do detect multiple images from 11 VLA targets. We have analysed these systems using our observations in conjunction with existing optical measurements, including measuring offsets between the radio and optical positions, for each image and building updated lens models. These observations significantly expand the existing sample of lensed radio quasars, suggest that most lensed systems are detectable at radio wavelengths with targeted observations, and demonstrate the feasibility of population studies with high resolution radio imaging

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars

Abstract We present XMM-Newton X-ray observations of nine confirmed lensed quasars at 1 ≲ z ≲ 3 identified by the Gaia Gravitational Lens program. Eight systems are strongly detected, with 0.3–8.0 keV fluxes F 0.3−8.0 ≳ 5 ×10−14 erg cm−2 s−1. Modeling the X-ray spectra with an absorbed power law, we derive power-law photon indices and 2–10 keV luminosities for the eight detected quasars. In addition to presenting sample properties for larger quasar population studies and for use in planning for future caustic-crossing events, we also identify three quasars of interest: a quasar that shows evidence of flux variability from previous ROSAT observations, the most closely separated individual lensed sources resolved by XMM-Newton, and one of the X-ray brightest quasars known at z &gt; 3. These sources represent the tip of the discoveries that will be enabled by SRG/eROSITA.</jats:p