Abstract: A security monitoring and enforcement system is provided for monitoring and enforcing control in a secure environment, such as an aircraft. The system includes a security monitoring and enforcement unit (SMEU) having a visual surveillance system and an audio surveillance and communication system. The visual surveillance system is mounted to an enforcement system and housed in a ceiling of an aircraft. The SMEU is remotely operated and monitored by remote control system located on the ground. The security monitoring and enforcement system is operable continuously or when a security breach is detected. The enforcement system is activated and fired to subdue a suspect.

Abstract: A security monitoring and enforcement system is provided for monitoring and enforcing control in a secure environment, such as an aircraft. The system includes a security monitoring and enforcement unit (SMEU) (1) having visual surveillance means (2) and audio surveillance and communication means (3). The visual surveillance means (2) is mounted to an enforcement means (4) and house in a ceiling (6) of an aircraft. The SMEU is remotely operated and monitored by remote control means (28) located on the ground. The system is operable continuously or when a security breach is detected. The enforcement means (4) is activated and fired to expel immobilising means (5) to subdue a suspect.

Abstract: A process for the preparation of a compound of formula (I), the process comprising the steps of (i) adding a solution of a compound of formula (II) in aqueous hydrochloric acid to an aqueous solution of sodium cyanide at a temperature in the range −5 to 10° C., and (ii) mixing the resulting mixture at a pH in the range 8.5-9.5 and a temperature in the range −5 to 5° C. for 15-24 hours under efficient agitation conditions, the concentration of sodium cyanide in the resulting mixture being greater than 2.4 molar.

Abstract: A process for removing N-(phosphonomethylglycine) (glyphosate) or a salt or ionic form thereof from an aqueous mixture in which it is present, wherein the aqueous mixture is an effluent from a glyphosate manufacturing process, the process comprising adding to the mixture of ions capable of forming an insoluble or partially soluble complex glyphosate salt, and removing the complex salt from the mixture. An additional process permits recovery of glyphosate from the precipitate of complex salts by a process comprising forming an aqueous slurry of the precipitate having a pH greater than 8 and removing the resultant metal oxide from the slurry to give an aqueous solution containing glyphosate.

Abstract: A process whereby N-phosphonomethylglycine (glyphosate) or its salts is manufactured by:1) forming N-phosphonomethylglycinonitrile by reacting aminomethylphosphonic acid, an alkali metal cyanide and formaldehyde in aqueous solution at a pH in the range from 10 to 13 (and preferably from 11 to 11.

Abstract: A process for the manufacture of an acid salt of an alkyl ester of N-phosphonomethylglycinonitrile is described which comprises reacting methyleneaminoacetonitrile trimer with a trialkylphosphite. The process is carried out under anhydrous conditions and in the presence of an anhydrous acid and an inert solvent in which methyleneaminoacetonitrile trimer is at least partially soluble and the acid salt of the alkyl ester of N-phosphonomethylglycinonitrile product is substantially insoluble. This is followed by recovering the precipitated acid salt of the alkyl ester of N-phosphonomethylglycinonitrile.

Abstract: N-Phosphonomethylglycine and its salts are manufactured by hydrolysing N-phosphonomethyl-2-oxazolidinone in an aqueous medium and thereafter oxidising the hydrolysis product in an aqueous alkaline medium using an oxygen-containing gas in the presence of an oxidation catalyst, for example a platinum or palladium catalyst optionally containing a promoter such as bismuth.

Abstract: A process for the preparation of an aqueous slurry of a water-insoluble azo compound which comprises continuously mixing together, in a reaction zone from which the slurry is continuously removed, a first stream containing a diazonium compound resulting from the diazotization of a heterocyclic or weakly basic benzenoid amine in an acid medium, hereinafter referred to as the diazo component, and a second stream containing a compound capable of coupling with the diazo component under the conditions existing in the reaction zone to form a water-insoluble azo compound hereinafter referred to as the coupling component.

Abstract: A process for the diazotization of a heterocyclic or a weakly basic benzenoid amine which comprises reacting together in a continuous manner, in a reaction zone from which a product stream containing diazotized amine is continuously removed, the amine and an aqueous solution of nitrite ions in the presence of sulphuric acid, the proportions and concentrations of the amine, the aqueous solution of nitrite ions and the sulphuric acid being so arranged as to provide a working acid concentration in the reaction zone in which the diazotized amine is stable.

Abstract: Method for detecting the presence of a substance contained in a fluid medium, which medium also contains particulate matter therein, comprising the addition of at least a portion of the fluid medium to a leaf material capable of separating by diffusion the fluid medium from the particulate matter and examination, using instrumental detection means, for the presence of the substance contained in the fluid medium in a detection area on the leaf material to which the fluid medium has diffused away from the particulate matter. Apparatus for performing the method where the fluid is a liquid is also described.