Results 21 to 30 of about 1,612,278 (346)

Corporate influence on threshold limit values

American 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 Unpublished corporate communications were important in developing TLVs for 104 substances; for 15 of these, the TLV ...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

Characteristics of Omega-optimized portfolios at different levels of threshold returns

Business, Management and Education, 2014
There is little literature considering effects that the loss-gain threshold used for dividing good and bad outcomes by all downside (upside) risk measures has on portfolio optimization and performance.
Renaldas Vilkancas
doaj   +1 more source

Health risk assessment of exposure to various vapors and fumes in a factory of automobile manufacturing

Heliyon, 2023
This study aimed to comprehensively evaluate the health risk of exposure to various vapors and fumes in a factory of automobile manufacturing. This study was performed in 2021 on 115 workers.
Amir Hossein Khoshakhlagh, Saeid Yazdanirad, Hamid Reza Saberi, Pao-Chi Liao   +3 more
doaj   +1 more source

Lithium-ion electrolytic substrates for sub-1V high-performance transition metal dichalcogenide transistors and amplifiers

Nature Communications, 2020
Electrostatic gating of 2D transistors with ionic liquids presents intrinsic limitations. Here, the authors demonstrate n-type MoS2 and p-type WSe2 transistors on a lithium-ion solid electrolyte substrate, displaying sub-threshold values approaching the ...
Md Hasibul Alam, Zifan Xu, Sayema Chowdhury, Zhanzhi Jiang, Deepyanti Taneja, Sanjay K. Banerjee, Keji Lai, Maria Helena Braga, Deji Akinwande   +8 more
doaj   +1 more source

Compliance between Food and Feed Safety: Eight-Year Survey (2013–2021) of Aflatoxin M1 in Raw Milk and Aflatoxin B1 in Feed in Northern Italy

Toxins, 2023
Aflatoxins (AFs) are fungal metabolites that are found in feed and food. When ruminants eat feed contaminated with aflatoxin B1 (AFB1), it is metabolised and aflatoxin M1 (AFM1) is excreted in the milk. Aflatoxins can result in hepatotoxic, carcinogenic,
Luca Ferrari, Nicoletta Rizzi, Elisa Grandi, Eleonora Clerici, Erica Tirloni, Simone Stella, Cristian Edoardo Maria Bernardi, Luciano Pinotti   +7 more
doaj   +1 more source

Percolation Critical Exponents in Scale-Free Networks

, 2002
We study the behavior of scale-free networks, having connectivity distribution P(k) k^-a, close to the percolation threshold.
D.S. Callaway, D.S. Callaway, Daniel ben-Avraham, M. Molloy, M. Molloy, M.E.J. Newman, R. Albert, R. Albert, R. Albert, R. Cohen, R. Cohen, R. Pastor-Satorras, Reuven Cohen, S.N. Dorogovtsev, S.N. Dorogovtsev, Shlomo Havlin, Z. Burda   +16 more
core   +1 more source

Comparison of automatic and visual methods used for image segmentation in Endodontics: a microCT study

Journal of Applied Oral Science
To calculate root canal volume and surface area in microCT images, an image segmentation by selecting threshold values is required, which can be determined by visual or automatic methods. Visual determination is influenced by the operator's visual acuity,
Polyane Mazucatto Queiroz, Karla Rovaris, Gustavo Machado Santaella, Francisco Haiter-Neto, Deborah Queiroz Freitas   +4 more
doaj   +1 more source

Should limit values be set for infrasound caused by wind turbines?

International Journal of Occupational Medicine and Environmental Health
The study focuses on setting outdoor exposure limits for wind turbine infrasound, as most countries currently have no specific limits for this type of noise.
Małgorzata Pawlaczyk-Łuszczyńska, Tadeusz Wszołek, Adam Dudarewicz, Paweł Małecki   +3 more
doaj   +1 more source

An alternate view of complexity in k-SAT problems

, 2014
The satisfiability threshold for constraint satisfaction problems is that value of the ratio of constraints (or clauses) to variables, above which the probability that a random instance of the problem has a solution is zero in the large system limit. Two
Krishnamurthy, Supriya, Sumedha
core   +1 more source

Health hazards of ultrafine metal and metal oxide powders [PDF]

, 1969
Study reveals that suggested threshold limit values are from two to fifty times lower than current recommended threshold limit values. Proposed safe limits of exposure to the ultrafine dusts are based on known toxic potential of various materials as ...
Boylen, G. W., Jr., Chamberlin, R. I., Viles, F. J.   +2 more
core   +1 more source