Results 11 to 20 of about 407,044 (304)

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

Carpal tunnel syndrome and manual work: the OCTOPUS cohort, results of a ten-year longitudinal study

open access: yesScandinavian Journal of Work, Environment & Health, 2016
OBJECTIVE: The American Conference of Governmental Industrial Hygienists (ACGIH) proposed a method to assess the hand, wrist and forearm biomechanical overload based on exertions frequency (hand-activity level) and force use (normalized peak force).
Francesco S Violante   +7 more
doaj   +1 more source

Complete Asymptotic Analysis of a Nonlinear Recurrence Relation with Threshold Control

open access: yesAdvances in Difference Equations, 2010
We consider a three-term nonlinear recurrence relation involving a nonlinear filtering function with a positive threshold λ. We work out a complete asymptotic analysis for all solutions of this equation when the threshold varies from 0+ to ...
Qi Ge, Chengmin Hou, Sui Sun Cheng
doaj   +2 more sources

Corporate influence on threshold limit values

open access: yesAmerican Journal of Industrial Medicine, 1988
Investigations into the historical development of specific Threshold Limit Values (TLVs) for many substances have revealed serious shortcomings in the process followed by the American Conference of Governmental Industrial Hygienists. Unpublished corporate communications were important in developing TLVs for 104 substances; for 15 of these, the TLV ...
B I, Castleman, G E, Ziem
  +7 more sources

Thermodynamic Analysis of the Dryout Limit of Oscillating Heat Pipes

open access: yesEnergies, 2020
The operating limits of oscillating heat pipes (OHP) are crucial for the optimal design of cooling systems. In particular, the dryout limit is a key factor in optimizing the functionality of an OHP.
Florian Schwarz   +4 more
doaj   +1 more source

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