Abstract: A process for preparing a carboxylic acid, including a step of bringing at least one vicinal diol or at least one vicinal polyol into contact with an atmosphere including oxygen, and a catalyst, and in the absence of additional solvent.

Abstract: A process for preparing a carboxylic acid, including a step of bringing at least one vicinal diol or at least one vicinal polyol into contact with an atmosphere including oxygen, and a catalyst, and in the absence of additional solvent.

Abstract: A process for preparing a carboxylic acid, by oxidative cleavage of at least one vicinal diol, or an epoxide, wherein the reaction is carried out in the presence of a catalyst and of an oxidizing agent and in the absence of solvent.

Abstract: Systems and methods for accessing a contention-based communications network are provided. In systems and methods for accessing a contention-based communications network, an access point in the network is created. The access point is a first node connected to the network configured to receive a request from a second node to gain access to the network. A power of a signal transmitted between the access point and the second node is measured. A probability that the second node will access the network is determined based on the measured power of the signal transmitted between the access point and the second node. A determination of whether to permit the second node to gain access to the network is made based on the determined probability.

Abstract: The invention relates to a method for producing a compound of fonnula (I), comprising the reaction, in the presence of a catalytic system comprising a single rare earth oxide or a mixture of rare earth oxides, of an alkyl carbonate or an alkylene carbonate with a polyol of fonnula (II), wherein p is a whole number between 2 and 10.

Abstract: Disclosed is a method for preparing, by transcarbonation, a compound of formula (I), including reacting a polyol of formula (II) with an alkyl carbonate or an alkylene carbonate in the presence of a catalytic system consisting of a catalytic entity selected from among the rare earth oxides or the mixtures thereof, and optionally an inert substrate.

Abstract: The invention relates to the use of glycerol ethers as agents that activate the biological effects of at least one substance selected from a herbicide, fungicide or insecticide. The invention essentially relates to the use of glycerol ether as an agent that activates the biological effects of at least one substance selected from a herbicide, or fungicide or insecticide, said glycerol ether having formula (1), wherein R1 represents an alkyl group having between 1 and 18 carbon atoms and R2 represents a hydrogen atom or an alkyl group having between 1 and 18 carbon atoms, preferably a methyl or ethyl group. The invention also relates to a phytosanitary composition containing one such glycerol ether, as well as to a phytosanitary treatment method using said composition.

Abstract: Systems and methods for accessing a contention-based communications network are provided. In systems and methods for accessing a contention-based communications network, an access point in the network is created. The access point is a first node connected to the network configured to receive a request from a second node to gain access to the network. A power of a signal transmitted between the access point and the second node is measured. A probability that the second node will access the network is determined based on the measured power of the signal transmitted between the access point and the second node. A determination of whether to permit the second node to gain access to the network is made based on the determined probability.

Abstract: A process for preparing a carboxylic acid, by oxidative cleavage of at least one vicinal diol, or an epoxide, wherein the reaction is carried out in the presence of a catalyst and of an oxidizing agent and in the absence of solvent.

Abstract: The invention relates to a method for producing a compound of fonnula (I), comprising the reaction, in the presence of a catalytic system comprising a single rare earth oxide or a mixture of rare earth oxides, of an alkyl carbonate or an alkylene carbonate with a polyol of fonnula (II), wherein p is a whole number between 2 and 10.

Abstract: Systems and methods for accessing a contention-based communications network are provided. In systems and methods for accessing a contention-based communications network, an access point in the network is created. The access point is a first node connected to the network configured to receive a request from a second node to gain access to the network. A power of a signal transmitted between the access point and the second node is measured. A probability that the second node will access the network is determined based on the measured power of the signal transmitted between the access point and the second node. A determination of whether to permit the second node to gain access to the network is made based on the determined probability.

Abstract: The present invention concerns a method for preparing glycerol ether or glycol ether comprising the reaction of a compound of formula (II) with a compound of formula (III) in the presence of a heterogeneous acid catalyst of formulas (II) and (III).

Abstract: The present invention relates to a process for preparing a polyol ether of formula (I), comprising a step of reductive alkylation involving a compound of general formula (II) and a compound of general formula (III): in which R1, R2, R3 and R4 are as defined in claim 1.

Abstract: The present invention relates to a process for preparing a polyol ether of formula (I), comprising a step of reductive alkylation involving a compound of general formula (II) and a compound of general formula (III): in which R1, R2, R3 and R4 are as defined in claim 1.

Abstract: Disclosed is a method for preparing, by transcarbonation, a compound of formula (I), including reacting a polyol of formula (II) with an alkyl carbonate or an alkylene carbonate in the presence of a catalytic system consisting of a catalytic entity selected from among the rare earth oxides or the mixtures thereof, and optionally an inert substrate.

Abstract: The present invention relates to a method for preparing carboxylic acids, in particular mono- and dicarboxylic acids, by oxidative cleavage of a vicinal diol. According to the invention, said method consists of reacting a vicinal diol of formula I: where: p is an integer comprised between 1 and 6; R1 and R2 are, separately: an alkyl or hydroxyl group having 1 to 12 carbon atoms; a —(CH2)n—C02M group where n, which can be identical or different in R1 and R2, is an integer comprised between 1 and 11 and M is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms or an alkaline cation; or R1 and R2 jointly form an alkylene —(CH2)m- group where m is an integer comprised between 2 and 10, preferably between 2 and 6; with industrial-grade sodium hypochlorite (or bleach), in the absence of an organic solvent and without adding a catalyst, preferably at room temperature. The invention can be used for recycling natural vegetable oils.

Abstract: The invention relates to the use of glycerol ethers as agents that activate the biological effects of at least one substance selected from a herbicide, fungicide or insecticide. The invention essentially relates to the use of glycerol ether as an agent that activates the biological effects of at least one substance selected from a herbicide, or fungicide or insecticide, said glycerol ether having formula (1), wherein R1 represents an alkyl group having between 1 and 18 carbon atoms and R2 represents a hydrogen atom or an alkyl group having between 1 and 18 carbon atoms, preferably a methyl or ethyl group. The invention also relates to a phytosanitary composition containing one such glycerol ether, as well as to a phytosanitary treatment method using said composition.

Abstract: The present invention relates to metal-phthalocyanines bearing at least a group containing boron isotopes 11B or 10B, covalently bound to the axial positions of metal-phthalocyanine nucleus; moreover it refers to the process for their preparation, the pharmaceutical compositions comprising them and their use for the treatment of neoplastic and dysplastic pathologies in PDT and/or BNCT.

Abstract: The present invention relates to metal-phthalocyanines bearing at least a group containing boron isotopes 11B or 10B, covalently bound to the axial positions of metal-phthalocyanine nucleus; moreover it refers to the process for their preparation, the pharmaceutical compositions comprising them and their use for the treatment of neoplastic and dysplastic pathologies in PDT and/or BNCT.

Abstract: The present invention relates to a nervonic acid derivatives of formula (I) CH3—(CH2)7—CH═CH—(CH2)13—C(O)—O—(CH2)3—OR  (I) wherein R is hydrogen (H) or a residue of a carboxylic acid; or a salt of the compound where R is H; or a bioprecursor, prodrug thereof. Those compounds wherein R is other than H have pharmacological activity, in particular anti-inflammatory and immunomodulatory effects. Those compounds wherein R is H can be used to prepare the pharmacologically active derivatives.