Results 301 to 310 of about 545,592 (346)

Investigating the chemical impurity profiles of fentanyl preparations and precursors to identify chemical attribution signatures for synthetic method attribution

Forensic Science International, 2021
From an analytical chemistry standpoint, determining the chemical attribution signatures (CAS) of synthetic reaction mixtures is an impurity profiling exercise. Identifying and understanding the impurity profile and CAS of these chemical agents would allow them to be exploited for chemical forensic information, such as how a particular chemical agent ...
Simon P B, Ovenden, Lyndal J, McDowall, Hugh E, McKeown, Nathan W, McGill, Oliver A H, Jones, James R, Pearson, Marija, Petricevic, Michael L, Rogers, Trevor J, Rook, Jilliarne, Williams, Renée L, Webster, Shannon D, Zanatta   +11 more
openaire   +2 more sources

Soil Chemical Attributes under Agrosilvopastoral Systems and Pasture

TreeDimensional, 2023
Agrosilvopastoral systems involve the consortium of trees, agricultural crops, and pasture, in the same area, concomitant or sequential, based on agroecological bases and on the cycling of organic matter and nutrients. This research compares soil fertility under pasture and agrosilvopastoral system.
Francisco de Assis Braga, Pedro Paulo Malfitano Braga, Fernanda Janes Ferreira Teixeira   +2 more
openaire   +1 more source

Chemical Additives and Hay Attributes

Transactions of the ASAE, 1978
ABSTRACT EXPERIMENTS were conducted at the Pennsylvania State University to evaluate the application of chemical preservatives to high-moisture hay crops. The chemicals used were: acetic acid, propionic acid, propionic-acetic acid mixtures, propionic-formic acid mixtures, isobutyric-propionic acid mixtures and ammonium isobutyrate (AIB).
null H. Nehrir, null W. L. Kjelgaard, null P. M. Anderson, null T. A. Long, null L. D. Hoffman, null J. B. Washko, null L. L. Wilson, null J. P. Mueller   +7 more
openaire   +1 more source

Chemical Sensitivity Attributed to Pesticide Exposure versus Remodeling

Archives of Environmental Health: An International Journal, 1995
One hundred twelve individuals who reported onset of multiple chemical sensitivity following well-documented exposure to either (1) a cholinesterase-inhibiting organophosphate or carbamate pesticide or (2) remodeling of a building completed mail-out/mail-back questionnaires concerning their exposure, symptoms, sensitivity to ingestants and inhalants ...
C S, Miller, H C, Mitzel
openaire   +2 more sources

Soil Chemical Attributes of Amazonas State, Brazil

Communications in Soil Science and Plant Analysis, 2009
Amazonas State is the largest state in Brazil and mainly covered by tropical forest. Because of the importance of the tropical forest in maintaining soil health and a clean environment, conservation of the Amazon forest is a national priority. However, sustainable agriculture development is necessary in the state for the welfare of the local population.
A. Moreira, N. K. Fageria
openaire   +1 more source

Chemical attributes characterizing sticky post-mortem ageing in beef

Meat Science, 1997
Reports in literature on post-mortem sticky ageing are rare and data about chemical metabolites that occur particularly during sticky ageing are partly contradictory. In the present study different chemicals (pH, NH(3), TVB-N, H(2)S, R value, IMP, pyruvate and various volatile acids such as lactic acid, acetic acid, butyric acid, uric acid and ...
R, Stephan, F, Stierli, F, Untermann
openaire   +2 more sources