Americium Inhalational Exposure with Successful Chelation Therapy

2021 ◽  
pp. 1-5
Author(s):  
Michael Keenan ◽  
Torsten Behrens ◽  
Stan Bravenec ◽  
Jason Davis ◽  
Angie Bowen ◽  
...  
Keyword(s):  
Case Report ◽  
Radioactive Contamination ◽  
Large Scale ◽  
Chelation Therapy ◽  
Nuclear Reactors ◽  
Radioactive Isotopes ◽  
Smoke Detectors ◽  
Commercial Applications ◽  
Dirty Bombs

Abstract Americium is a man-made metal produced in very small quantities in nuclear reactors. Americium-241 is one of the radioactive isotopes of americium and has commercial applications, including use in smoke detectors. This is a case report of an occupational inhalation of americium-241, treated with both effective external decontamination and the use of diethylenetriamine pentaacetate to promote decorporation. This experience is significant because of the potential for americium or similar radionuclides to be used in “dirty” bombs or other radiological dispersion devices to cause large-scale radioactive contamination.

scholarly journals Understanding the origin of the positron annihilation line and the physics of supernova explosions

2021 ◽  
Author(s):  
F. Frontera ◽  
E. Virgilli ◽  
C. Guidorzi ◽  
P. Rosati ◽  
R. Diehl ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Large Scale ◽  
Gamma Ray ◽  
Nuclear Astrophysics ◽  
High Energy ◽  
Radioactive Isotopes ◽  
Fusion Reactions ◽  
Dark Matter Annihilation ◽  
Annihilation Line ◽  
Supernova Explosions

AbstractNuclear astrophysics, and particularly nuclear emission line diagnostics from a variety of cosmic sites, has remained one of the least developed fields in experimental astronomy, despite its central role in addressing a number of outstanding questions in modern astrophysics. Radioactive isotopes are co-produced with stable isotopes in the fusion reactions of nucleosynthesis in supernova explosions and other violent events, such as neutron star mergers. The origin of the 511 keV positron annihilation line observed in the direction of the Galactic Center is a 50-year-long mystery. In fact, we still do not understand whether its diffuse large-scale emission is entirely due to a population of discrete sources, which are unresolved with current poor angular resolution instruments at these energies, or whether dark matter annihilation could contribute to it. From the results obtained in the pioneering decades of this experimentally-challenging window, it has become clear that some of the most pressing issues in high-energy astrophysics and astro-particle physics would greatly benefit from significant progress in the observational capabilities in the keV-to-MeV energy band. Current instrumentation is in fact not sensitive enough to detect radioactive and annihilation lines from a wide variety of phenomena in our and nearby galaxies, let alone study the spatial distribution of their emission. In this White Paper (WP), we discuss how unprecedented studies in this field will become possible with a new low-energy gamma-ray space experiment, called ASTENA (Advanced Surveyor of Transient Events and Nuclear Astrophysics), which combines new imaging, spectroscopic and polarization capabilities. In a separate WP (Guidorzi et al. 39), we discuss how the same mission concept will enable new groundbreaking studies of the physics of Gamma–Ray Bursts and other high-energy transient phenomena over the next decades.

scholarly journals Reduced Dosage of Methyl Bromide for Controlling Verticillium Wilt of Potato in Experimental and Commercial Plots

Plant Disease ◽  
1997 ◽  
Vol 81 (5) ◽  
pp. 469-474 ◽  
Author(s):  
A. Gamliel ◽  
A. Grinstein ◽  
Y. Peretz ◽  
L. Klein ◽  
A. Nachmias ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Methyl Bromide ◽  
Large Scale ◽  
Field Experiments ◽  
Tuber Yield ◽  
Total Yield ◽  
Effective Control ◽  
Large Scale Field ◽  
Commercial Applications

The use of gas-impermeable films to reduce the dosage of methyl bromide (MB) required to control Verticillium wilt in potatoes was examined in field experiments, conducted in soils naturally infested with Verticillium dahliae. The incidence and severity of Verticillium wilt were significantly reduced (by 74 to 94%) by fumigation with MB at 50 g/m2 under standard low density polyethylene (LDPE) or at 25 g/m2 under gas-impermeable films. Fumigation at 25 g/m2 under LDPE was less effective. Disease severity was inversely correlated (r2 = 0.89 to 0.91) with chlorophyll content in the leaves. Fumigation also reduced (by 89 to 100%) stem colonization by the pathogen. Potato yield in the fumigated plots was significantly higher (26 to 69%), than in their nonfumigated counterparts, and was inversely correlated with disease index (r2 = 0.69 to 0.9). The percentage of high-value tubers (above 45 g) was 52 to 56% of total yield in the fumigated plots as compared with 32 to 40% in the nonfumigated controls. Thus, fumigation also improved the commercial quality of tuber yield. Effective control of V. dahliae and yield increases following MB fumigation at the recommended dosage or at a reduced dosage with gas-impermeable films was also observed in a consecutive crop. These results were verified in a large-scale field experiment using commercial applications, further demonstrating the feasibility of reducing MB dosages under farm conditions, without reducing its effectiveness in terms of disease control and yield improvement.

Abstract 1122‐000097: Recurrent Carotid Cavernous Fistula Requiring Complex Repair of Ruptured Cavernous Carotid Aneurysm: A Case Report

2021 ◽  
Vol 1 (S1) ◽  
Author(s):  
Rami Z. Morsi ◽  
Faten El Ammar ◽  
Sonam Thind ◽  
Scott J. Mendelson ◽  
Cedric McKoy ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Case Report ◽  
Large Scale ◽  
Mechanical Valve ◽  
Covered Stent ◽  
Stent Grafts ◽  
Cerebral Angiogram ◽  
Safety And Efficacy ◽  
Third Nerve Palsy ◽  
History Of

Introduction : There are no studies investigating the safety and efficacy of covered stent grafts, particularly the newly developed stents such as the PK Papyrus stent, for endovascular treatment of direct carotid cavernous fistulas (CCFs). Methods : We present a case of a 75‐year‐old female who presented to the hospital with a three‐week history of worsening left eye vision, chemosis, proptosis, and partial third nerve palsy. Patient was found to have left direct Type A CCF secondary to ruptured cavernous segment carotid aneurysm. Results : The CCF was treated with coil embolization and pipeline Shield stent embolization devices with immediate stagnation and improvement of symptoms. Patient had history of an aortic mechanical valve and thus was started on warfarin and ASA. After achieving INR level of 2.5‐3.5, patient started to have recurrent swelling of the left eye associated and decreased visual acuity. Repeated diagnostic cerebral angiogram revealed residual CCF. Onyx liquid embolization and a Surpass Evolve Flow Diverter were attempted to slow the fistulization with no success. Multiple attempts for direct percutaneous superior ophthalmic vein cannulation were also unsuccessful. At this point, two coronary graft‐covered PK Papyrus stents were implanted across the fistula pouch, which resulted in immediate resolution of the CCF with evidence of persistent normal flow within left ophthalmic artery. Patient’s visual acuity and left eye movement improved. Conclusions : This case report highlights the effectiveness and safety of covered stent grafts, particularly more flexible stents such as the PK Papyrus stent, in navigating the carotid vasculature and closing direct CCFs and may be used as a first‐line technique. More large‐scale studies are warranted to investigate the safety and efficacy of using such stent grafts to treat direct CCFs in the setting of antithrombotic agents and anticoagulation.

Artificial Neural Network Models for Large-Scale Data

2019 ◽  
pp. 406-439
Author(s):  
Vo Ngoc Phu ◽  
Vo Thi Ngoc Tran
Keyword(s):  
Large Scale ◽  
Network Models ◽  
Data Sets ◽  
Neural Network Models ◽  
Large Scale Data ◽  
The World ◽  
Commercial Applications ◽  
Artificial Neural Network Models ◽  
Scale Data ◽  
Large Scale Data Sets

Artificial intelligence (ARTINT) and information have been famous fields for many years. A reason has been that many different areas have been promoted quickly based on the ARTINT and information, and they have created many significant values for many years. These crucial values have certainly been used more and more for many economies of the countries in the world, other sciences, companies, organizations, etc. Many massive corporations, big organizations, etc. have been established rapidly because these economies have been developed in the strongest way. Unsurprisingly, lots of information and large-scale data sets have been created clearly from these corporations, organizations, etc. This has been the major challenges for many commercial applications, studies, etc. to process and store them successfully. To handle this problem, many algorithms have been proposed for processing these big data sets.

Neural Network for Big Data Sets

2022 ◽  
pp. 41-67
Author(s):  
Vo Ngoc Phu ◽  
Vo Thi Ngoc Tran
Keyword(s):  
Neural Network ◽  
Big Data ◽  
Computer Science ◽  
Large Scale ◽  
Massive Data ◽  
Data Sets ◽  
Massive Data Sets ◽  
Large Scale Data ◽  
Commercial Applications ◽  
Novel Model

Machine learning (ML), neural network (NN), evolutionary algorithm (EA), fuzzy systems (FSs), as well as computer science have been very famous and very significant for many years. They have been applied to many different areas. They have contributed much to developments of many large-scale corporations, massive organizations, etc. Lots of information and massive data sets (MDSs) have been generated from these big corporations, organizations, etc. These big data sets (BDSs) have been the challenges of many commercial applications, researches, etc. Therefore, there have been many algorithms of the ML, the NN, the EA, the FSs, as well as computer science which have been developed to handle these massive data sets successfully. To support for this process, the authors have displayed all the possible algorithms of the NN for the large-scale data sets (LSDSs) successfully in this chapter. Finally, they have presented a novel model of the NN for the BDS in a sequential environment (SE) and a distributed network environment (DNE).

scholarly journals Carbon Nanotube Sheet-Synthesis and Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2023
Author(s):  
Megha Chitranshi ◽  
Anuptha Pujari ◽  
Vianessa Ng ◽  
Daniel Chen ◽  
Devika Chauhan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Large Scale ◽  
Hydrogen Gas ◽  
Synthesis Process ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Metal Ceramic ◽  
Commercial Applications ◽  
Manufacturing Problems

Decades of extensive research have matured the development of carbon nanotubes (CNTs). Still, the properties of macroscale assemblages, such as sheets of carbon nanotubes, are not good enough to satisfy many applications. This paper gives an overview of different approaches to synthesize CNTs and then focuses on the floating catalyst method to form CNT sheets. A method is also described in this paper to modify the properties of macroscale carbon nanotube sheets produced by the floating catalyst method. The CNT sheet is modified to form a carbon nanotube hybrid (CNTH) sheet by incorporating metal, ceramic, or other types of nanoparticles into the high-temperature synthesis process to improve and customize the properties of the traditional nanotube sheet. This paper also discusses manufacturing obstacles and the possible commercial applications of the CNT sheet and CNTH sheet. Manufacturing problems include the difficulty of injecting dry nanoparticles uniformly, increasing the output of the process to reduce cost, and safely handling the hydrogen gas generated in the process. Applications for CNT sheet include air and water filtering, energy storage applications, and compositing CNTH sheets to produce apparel with anti-microbial properties to protect the population from infectious diseases. The paper also provides an outlook towards large scale commercialization of CNT material.

scholarly journals Lead Toxicity due to Ingestion of Lead-Contaminated Opium in a Patient Presenting with Motor Neuropathy and Upper Limb Paresis: A case report

2019 ◽  
Vol 18 (4) ◽  
pp. 529 ◽  
Author(s):  
Seyed M. M. Mirzaei ◽  
Ayob Akbari ◽  
Omid Mehrpour ◽  
Nasim Zamani
Keyword(s):  
Nervous System ◽  
Case Report ◽  
Lead Poisoning ◽  
Chelation Therapy ◽  
Lead Level ◽  
Lead Toxicity ◽  
Blood Lead ◽  
Motor Neuropathy ◽  
Upper Limbs ◽  
Gastrointestinal Complications

Opium users may present with central or peripheral nervous system-related symptoms, gastrointestinal complications and anaemia; in such cases, lead poisoning should be suspected and chelation therapy initiated as soon as possible. We report a 64-year-old male patient with a 20-year history of opium addiction who was referred to the Imam Reza Hospital, Birjand, Iran, in 2017 with severe motor neuropathy and paresis in both upper limbs. His primary symptoms were generalised weakness, abdominal and bone pain, constipation and lower limb paraesthesia that had started several months prior. In addition, he reported severe progressive bilateral paresis of the upper limbs of one month’s duration. A diagnosis of lead poisoning was confirmed by a blood lead level of 140 μg/dL. The patient underwent chelation therapy after which he improved significantly. At a one-year follow-up visit, he was neurologically intact and symptom-free.Keywords: Opium Dependence; Lead Poisoning; Lead-Induced Nervous System Diseases; Paresthesia; Case Report; Iran.

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