Results 51 to 60 of about 1,112,972 (296)

Sampler of gas borne particles [PDF]

open access: yes, 1976
An atmosphere sample is described which includes a very thin filter element with straight-through holes on the order of 1 micron. A sample of air with particles to be examined is driven by means of a pressurized low molecular weight gas, e.g., He to the ...
Miller, C. G., Stephens, J. B.
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

TDS dan pH yang Dihasilkan Penjernih Air Sarang Tawon Akibat Perbedaan Ketebalan dan Kerapatan Media Filter Sabut Kelapa

open access: yesJurnal Teknik Sipil
Penjernih air Sarang Tawon menggunakan prinsip filtrasi yang dilakukan secara berulang melewati media filter tertentu yang disusun berlapis-lapis. Kualitas air hasil proses filtrasi dipengaruhi oleh sistem filtrasi dan jenis media filter yang digunakan ...
Dinda Kusuma Widi Astuti   +2 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Effectiveness of HEPA Filters at Removing Infectious SARS-CoV-2 from the Air

open access: yesmSphere, 2022
Coronavirus disease 2019 (COVID-19) spreads by airborne transmission; therefore, the development and functional evaluation of air-cleaning technologies are essential for infection control.
Hiroshi Ueki   +5 more
doaj   +1 more source

Air Carbon Filter

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2023
Abstract: All over the globe, billions of people use vehicles in their day to day life. It includes public and private transport as well. Vehicles running on fossil fuels emit large amount of carbon and volatile organic compounds. These compounds are hazardous for the environment as well as for the human beings.
openaire   +1 more source

The measurement of air supply volumes and velocities in cleanrooms [PDF]

open access: yes, 2010
Air supply volumes and velocities in cleanrooms are monitored by airflow measuring hoods and anemometers but these measuring methods can be inaccurate if used incorrectly.
Green, G., Whyte, W., Whyte, W.M.
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

Air Filter Dust Level Sensing System Using Fuzzy Logic

open access: yesInternational Journal of Electrical Engineering and Applied Sciences, 2018
The conventional air filter dust level checking process needs to manually inspect an air conditioner. This process is dangerous for users because the installation of the air conditioner is high.
Zhen Ting Bong   +2 more
doaj  

HVAC SYSTEM AIR FILTER DIAGNOSTICS AND MONITORING [PDF]

open access: yes, 2019
A system and method for monitoring a heating, ventilation, or air conditioning (HVAC) system of a building is provided. A monitoring server, located remotely from the building, receives operating parameter data from a monitoring device at the building ...
Abiprojo, Priotomo, Alsaleem, Fadi M.
core   +1 more source

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