Classification of COVID-19 Using Synthetic Minority Over-Sampling and Transfer Learning

The 2019 novel coronavirus has been proven to present several unique features on chest X-rays and CT-scans that distinguish it from imaging of other pulmonary diseases such as bacterial pneumonia and viral pneumonia unrelated to COVID-19. However, the key characteristics of a COVID-19 infection have been proven challenging to detect with the human eye. The aim of this project is to explore if it is possible to distinguish a patient with COVID-19 from a patient who is not suffering from the disease from posteroanterior chest X-ray images using synthetic minority over-sampling and transfer learning. Furthermore, the report will also present the mechanics of COVID-19, the used dataset and models and the validity of the results.

Classification of COVID-19 Using Synthetic Minority Over-Sampling and Transfer Learning

The 2019 novel coronavirus has been proven to present several unique features on chest X-rays and CT-scans that distinguish it from imaging of other pulmonary diseases such as bacterial pneumonia and viral pneumonia unrelated to COVID-19. However, the key characteristics of a COVID-19 infection have been proven challenging to detect with the human eye. The aim of this project is to explore if it is possible to distinguish a patient with COVID-19 from a patient who is not suffering from the disease from posteroanterior chest X-ray images using synthetic minority over-sampling and transfer learning. Furthermore, the report will also present the mechanics of COVID-19, the used dataset and models and the validity of the results.

Beaconlogin - an Efficient Way to Register Presence on Construction Sites

As of January the first, 2016, all companies working in the Swedish construction industry must follow a new law. The law makes it mandatory for anyone carrying out construction activities to have electronic staff registers on their sites. Failing to present a correct registration of all personnel present at the construction site will result in a fine ranging from 15,000 SEK to 25,000 SEK. Our solution for a simple way of registration builds on Bluetooth technology combined with a smartphone application. Together with Bluetooth devices, the registration can be done automatically which eliminates the need for construction workers to actively search for the e-staff register.Den första januari 2016 infördes en ny lag för företag inom den Svenska byggarbetsbranchen som gör det obligatoriskt för alla som utför byggverksamhet att ha elektroniska personalliggare på sina byggarbetsplatser. Om man inte kan visa upp en korrekt närvaroregistrering av den personal som befinner sig på byggarbetsplatsen riskerar man som företag böter på mellan 15 000 SEK till 25 000 SEK. Vår lösning för att sköta närvaroregistrering bygger på bluetoothteknologi i kombination med en mobilapplikation. Med hjälp av bluetoothenheter kan registreringen ske automatiskt vilket tar bort behovet för arbetare att aktivt själva behöva sköta sin registrering

Beaconlogin - an Efficient Way to Register Presence on Construction Sites

As of January the first, 2016, all companies working in the Swedish construction industry must follow a new law. The law makes it mandatory for anyone carrying out construction activities to have electronic staff registers on their sites. Failing to present a correct registration of all personnel present at the construction site will result in a fine ranging from 15,000 SEK to 25,000 SEK. Our solution for a simple way of registration builds on Bluetooth technology combined with a smartphone application. Together with Bluetooth devices, the registration can be done automatically which eliminates the need for construction workers to actively search for the e-staff register.Den första januari 2016 infördes en ny lag för företag inom den Svenska byggarbetsbranchen som gör det obligatoriskt för alla som utför byggverksamhet att ha elektroniska personalliggare på sina byggarbetsplatser. Om man inte kan visa upp en korrekt närvaroregistrering av den personal som befinner sig på byggarbetsplatsen riskerar man som företag böter på mellan 15 000 SEK till 25 000 SEK. Vår lösning för att sköta närvaroregistrering bygger på bluetoothteknologi i kombination med en mobilapplikation. Med hjälp av bluetoothenheter kan registreringen ske automatiskt vilket tar bort behovet för arbetare att aktivt själva behöva sköta sin registrering

Beaconlogin - an Efficient Way to Register Presence on Construction Sites

As of January the first, 2016, all companies working in the Swedish construction industry must follow a new law. The law makes it mandatory for anyone carrying out construction activities to have electronic staff registers on their sites. Failing to present a correct registration of all personnel present at the construction site will result in a fine ranging from 15,000 SEK to 25,000 SEK. Our solution for a simple way of registration builds on Bluetooth technology combined with a smartphone application. Together with Bluetooth devices, the registration can be done automatically which eliminates the need for construction workers to actively search for the e-staff register.Den första januari 2016 infördes en ny lag för företag inom den Svenska byggarbetsbranchen som gör det obligatoriskt för alla som utför byggverksamhet att ha elektroniska personalliggare på sina byggarbetsplatser. Om man inte kan visa upp en korrekt närvaroregistrering av den personal som befinner sig på byggarbetsplatsen riskerar man som företag böter på mellan 15 000 SEK till 25 000 SEK. Vår lösning för att sköta närvaroregistrering bygger på bluetoothteknologi i kombination med en mobilapplikation. Med hjälp av bluetoothenheter kan registreringen ske automatiskt vilket tar bort behovet för arbetare att aktivt själva behöva sköta sin registrering

Different relaxations in myoglobin after photolysis

To clarify the interplay of kinetic hole-burning (KHB), structural relaxation, and ligand migration in myoglobin (Mb), we measured time-resolved absorption spectra in the Soret region after photolysis of carbon monoxide Mb (MbCO) in the temperature interval 120-260 K and in the time window 350 ns to 200 ms. The spectral contributions of both photolyzed (Mb(*)) and liganded Mb (MbCO) have been analyzed by taking into account homogeneous bandwidth, coupling to vibrational modes, and static conformational heterogeneity. We succeeded in separating the “time-dependent” spectral changes, and this work provides possibilities to identify the events in the process of ligand rebinding. KHB is dominant at T <190 K in both the Mb(*) and the MbCO components. For MbCO, conformational substates interconversion at higher temperatures tends to average out the KHB effect. At 230-260 K, whereas almost no shift is observed in the MbCO spectrum, a shift of the order of ≈80 cm(-1) is observed in Mb(*). We attribute this shift to protein relaxation coupled to ligand migration. The time dependence of the Mb(*) spectral shift is interpreted with a model that enables us to calculate the highly nonexponential relaxation kinetics. Fits of stretched exponentials to this kinetics yield Kohlrausch parameter values of 0.25, confirming the analogy between proteins and glasses

Anisotropic Organization and Microscopic Manipulation of Self-Assembling Synthetic Porphyrin Microrods That Mimic Chlorosomes: Bacterial Light-Harvesting Systems

Being able to control in time and space the positioning, orientation, movement, and sense of rotation of nano- to microscale objects is currently an active research area in nanoscience, having diverse nanotechnological applications. In this paper, we demonstrate unprecedented control and maneuvering of rod-shaped or tubular nanostructures with high aspect ratios which are formed by self-assembling synthetic porphyrins. The self-assembly algorithm, encoded by appended chemical-recognition groups on the periphery of these porphyrins, is the same as the one operating for chlorosomal bacteriochlorophylls (BChl's). Chlorosomes, rod-shaped organelles with relatively long-range molecular order, are the most efficient naturally occurring light-harvesting systems., They are used by green photosynthetic bacteria to trap visible and infrared light of minute intensities even at great depths, e.g., 100 m below water surface or in volcanic vents in the absence of solar radiation. In contrast to most other natural light-harvesting systems, the chlorosomal antennae are devoid of a protein scaffold to orient the BChl's; thus, they are an attractive goal for mimicry by synthetic chemists, who are able to engineer more robust chromophores to self-assemble. Functional devices with environmentally friendly chromophoreswhich should be able to act as photosensitizers within hybrid solar cells, leading to high photon-to-current conversion efficiencies even under low illumination conditionshave yet to be fabricated. The orderly manner in which the BChl's and their synthetic counterparts self-assemble imparts strong diamagnetic and optical anisotropies and flow/shear characteristics to their nanostructured assemblies, allowing them to be manipulated by electrical, magnetic, or tribomechanical forces

Anisotropic Organization and Microscopic Manipulation of Self-Assembling Synthetic Porphyrin Microrods That Mimic Chlorosomes: Bacterial Light-Harvesting Systems

Being able to control in time and space the positioning, orientation, movement, and sense of rotation of nano- to microscale objects is currently an active research area in nanoscience, having diverse nanotechnological applications. In this paper, we demonstrate unprecedented control and maneuvering of rod-shaped or tubular nanostructures with high aspect ratios which are formed by self-assembling synthetic porphyrins. The self-assembly algorithm, encoded by appended chemical-recognition groups on the periphery of these porphyrins, is the same as the one operating for chlorosomal bacteriochlorophylls (BChl's). Chlorosomes, rod-shaped organelles with relatively long-range molecular order, are the most efficient naturally occurring light-harvesting systems., They are used by green photosynthetic bacteria to trap visible and infrared light of minute intensities even at great depths, e.g., 100 m below water surface or in volcanic vents in the absence of solar radiation. In contrast to most other natural light-harvesting systems, the chlorosomal antennae are devoid of a protein scaffold to orient the BChl's; thus, they are an attractive goal for mimicry by synthetic chemists, who are able to engineer more robust chromophores to self-assemble. Functional devices with environmentally friendly chromophoreswhich should be able to act as photosensitizers within hybrid solar cells, leading to high photon-to-current conversion efficiencies even under low illumination conditionshave yet to be fabricated. The orderly manner in which the BChl's and their synthetic counterparts self-assemble imparts strong diamagnetic and optical anisotropies and flow/shear characteristics to their nanostructured assemblies, allowing them to be manipulated by electrical, magnetic, or tribomechanical forces