Results 11 to 20 of about 963,040 (323)

Evolution of beryllium safety standards over the last 70 years and challenges ahead

open access: yesRadiation Protection and Environment, 2022
Beryllium (Be), its alloys, and ceramics are widely used in high-tech applications such as electronics, space, atomic energy, and other day-to-day items of use.
Munish Kumar, Alok Srivastava
doaj   +1 more source

Effects of Sensor Types and Angular Velocity Computational Methods in Field Measurements of Occupational Upper Arm and Trunk Postures and Movements

open access: yesSensors, 2021
Accelerometer-based inclinometers have dominated kinematic measurements in previous field studies, while the use of inertial measurement units that additionally include gyroscopes is rapidly increasing.
Xuelong Fan   +3 more
doaj   +1 more source

Design and implementation of smart home control system [PDF]

open access: yesITM Web of Conferences, 2022
This study designs a smart home control system, aiming to resloving family fires and the problem of children falling over windows. The system includes a data monitoring module, a single-chip control module, a display module, an executive module and an ...
Hu Zhijie   +3 more
doaj   +1 more source

Determination of some heavy metals in soil and vegetable samples from Gonglung agricultural location of Jere Local Government Area of Borno State, Nigeria [PDF]

open access: yesJournal of Chemistry Letters, 2022
The vegetable samples of (Tomatoes, Onion, Spinach and lettuce) and the soil samples were all collected at Gonglung Agricultural Locations. The soil samples were collected at three different depths of 0-5 cm, 5-10 cm and 10-15 cm respectively.
Zakari Mohammed   +4 more
doaj   +1 more source

Expressiveness and Closure Properties for Quantitative Languages [PDF]

open access: yesLogical Methods in Computer Science, 2010
Weighted automata are nondeterministic automata with numerical weights on transitions. They can define quantitative languages~$L$ that assign to each word~$w$ a real number~$L(w)$.
Krishnendu Chatterjee   +2 more
doaj   +1 more source

Kualitas Air Rawa terhadap Keluhan Kesehatan Masyarakat Desa

open access: yesJurnal Kesehatan, 2021
Swamp water is the source of water used Banyu Hirang Village community. The research objective is to analyze the turbidity, levels of iron and organic matter content, and community health complaints.
Norsita Agustina   +2 more
doaj   +1 more source

The Analysis of Hearing Threshold Level of Noise Exposed Workers in Circulator Loom Unit

open access: yesThe Indonesian Journal of Occupational Safety and Health, 2020
Introduction: One of the hazards caused by the process of producing plastic sacks is noise. Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing. Noise is produced by machines used in the production process.
Mariska Hamid
doaj   +1 more source

Establishing environmental soil phosphorus thresholds to decrease the risk of losses to water in soils from Rio Grande do Sul, Brazil [PDF]

open access: yesRevista Brasileira de Ciência do Solo, 2020
The overloading of soil with manure or mineral fertilizers enhances phosphorus (P) availability, promoting its loss to water bodies and increasing the risk of eutrophication.
Luciano Colpo Gatiboni   +6 more
doaj   +1 more source

Risk Analysis of a Supercritical Fluid Extraction Plant Affected by a Gas Release Using a Commercial Software

open access: yesChemical Engineering Transactions, 2021
This work presents a risk analysis of a plant that uses supercritical fluid extraction technology with carbon dioxide as a solvent to obtain bioproducts from microalgae.
Angela Iovine   +5 more
doaj   +1 more source

The distribution of heavy metals content in the bottom deposits of the trans-border Uzh river system

open access: yesBiosystems Diversity, 2017
The dynamics and peculiarities of the heavy metals (Cu, Pb, Zn, As, V, Cr, Ni) migration were established in the system of the river Uzh bottom deposits. An excess in maximum permissible concentration among such elements as Zn, V, As, and Cu was detected
M. V. Bilkey, V. I. Nikolaichuk
doaj   +1 more source

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