Abstract: A fire resistant textile material comprising a fire resistant textile material comprising a woven face fabric composed of fibres selected from: meta-aramid, para-aramid, polyamideimide and mixtures thereof; wherein the number of warp face threads, per unit width (cm) is greater than the number of weft threads, per unit length (cm).

Abstract: A fire resistant textile material comprising a fire resistant textile material comprising a woven face fabric composed of fibres selected from: meta-aramid, para-aramid, polyamideimide and mixtures thereof; wherein the number of warp face threads, per unit width (cm) is greater than the number of weft threads, per unit length (cm).

Abstract: A method associates errors by causal relationship in software systems where multiple threads share access to hardware and/or software components. Where a software object, such as a lock, is provided, a thread can place an error ID into the object if encountered while the first thread controls the object. A second thread can retrieve the error ID and associate it as a parent error for any time-out error encountered while waiting for the software object. Errors can be reported and displayed in a causal graph for determining root causes. Errors can have a severity that can facilitate the display of errors to a user. Root cause errors can be assigned the severity of the most severe of its child errors to assist a user in determining a root cause. Errors can further be displayed or masked based on the severity assigned to the errors and/or their parent or child errors.

Abstract: A method associates errors by causal relationship in software systems where multiple threads share access to hardware and/or software components. Where a software object, such as a lock, is provided, a thread can place an error ID into the object if encountered while the first thread controls the object. A second thread can retrieve the error ID and associate it as a parent error for any time-out error encountered while waiting for the software object. Errors can be reported and displayed in a causal graph for determining root causes. Errors can have a severity that can facilitate the display of errors to a user. Root cause errors can be assigned the severity of the most severe of its child errors to assist a user in determining a root cause. Errors can further be displayed or masked based on the severity assigned to the errors and/or their parent or child errors.

Abstract: A fire resistant material comprising a woven faced fabric composed or fibers from meta-aramid, polyamideimide and mixtures thereof, the woven back fabric of low thermal shrinkage fibers selected from para-aramid, polyparaphenylene terephthalamide copolymer and mixtures thereof.

Abstract: A fire resistant material comprising a woven faced fabric composed or fibres from meta-aramid, polyamideimide and mixtures thereof, the woven back fabric of low thermal shrinkage fibres selected from para-aramid, polyparaphenylene terephthalamide copolymer and mixtures there of.

Abstract: Disclosed are processes for producing chromane compounds, preferably chroman-2-yl acetic acid compounds and 6-amino-chroman-2-yl acetic acid esters which are intermediates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors.

Abstract: Disclosed are processes for producing chromane compounds, preferably chroman-2-yl acetic acid compounds and 6-amino-chroman-2-yl acetic acid esters which are intermediates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors.

Abstract: Disclosed are processes for producing a (2S) or (2R) 4-oxo-chroman-2-yl acyl compounds and chroman-2-yl acyl compounds, esters or amides thereof as well as derivatives thereof. Such processes may involve chiral synthesis or achiral synthesis, preferably coupled with a resolution procedure. Such compounds, particularly (2S) or (2R) acetic acid esters, are useful intermedates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors. Further disclosed are processes for making derivatives of such substantially pure, or enhanced compositions of single (2R) or (2S) enantiomer intermediates or processes for producing final products or salts from such desired enantiomers.

Abstract: A fire resistant textile material comprising a woven faced fabric composed of fibers selected from meta-aramid, polyamideimide and mixture thereof, the fabric including a woven mesh of strengthening fibers selected from para-aramid, polyparaphenylene terephthalamide copolymer and mixture thereof.

Abstract: A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R.sup.3 is ##STR2## is an optional sulfoxide group; n is 2 or 3; R.sup.1 is H and R is H or NHR.sup.2, where R.sup.2 is H or a protecting group selected from C.sub.6 H.sub.5 CH.sub.2 OC(O)--, C.sub.6 H.sub.5 C(O)-- or C.sub.1 -C.sub.6 alkoxy-C(O)--; or wherein R and R.sup.1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.

Abstract: A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R.sup.3 is CH.sub.3 C(O)--; ##STR2## is an optional sulfoxide group; n is 2 or 3; R.sup.1 is H and R is H or NHR.sup.2, where R.sup.2 is H or a protecting group selected from C.sub.6 H.sub.5 CH.sub.2 OC(O)--, C.sub.6 H.sub.5 C(O)-- or C.sub.1 -C.sub.6 alkoxy-C(O)--; or wherein R and R.sup.1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.

Abstract: A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R.sup.3 is CH.sub.3 C(O)--; ##STR2## is an optional sulfoxide group; n is 2 or 3; R.sup.1 is H and R is H or NHR.sup.2, where R.sup.2 is H or a protecting group selected from C.sub.6 H.sub.5 CH.sub.2 OC(O)--, C.sub.6 H.sub.5 C(O)-- or C.sub.1 -C.sub.6 alkoxy--C(O)--; or wherein R and R.sup.1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.

Abstract: Penicillin sulfoxide esters are reacted with an isocyanate to produce the corresponding (substituted)-2-carbamoyloxymethylpenam, the corresponding (substituted)-3-carbamoyloxycepham or the corresponding 3-methylcephem. The 6- or 7-side-chain of these products may be cleaved to give the corresponding 6-amino (penams) or 7-amino (cephams and cephems) compounds, and the latter may be reacylated to produce different 6-acyl-2-carbamoyloxymethyl penams, 7-acyl-3-carbamoyloxy cephams and 7-acyl-3-methylcephems. The substituent groups may be removed from the (substituted)-2-carbamoyloxypenams or the (substituted)-3-carbamoyloxycephams to give the corresponding free 2-carbamoyloxymethylpenams or 3-carbamoyloxycephams, respectively.

Abstract: Penicillin sulfoxide esters are reacted with an isocyanate to produce the corresponding (substituted)-2-carbamoyloxymethylpenam, the corresponding (substituted)-3-carbamoyloxycepham or the corresponding 3-methylcepem. The 6- or 7-side-chain of these products may be cleaved to give the corresponding 6-amino (penams) or 7-amino (cephams and cephems) compounds, and the latter may be reacylated to produce different 6-acyl-2-carbamoyloxymethyl penams, 7-acyl-3-carbamoyloxy cephams and 7-acyl-3-methylcephems. The substituent groups may be removed from the (substituted)-2-carbamoyloxypenams or the (substituted)-3-carbamoyloxycephams to give the corresponding free 2-carbamoyloxymethylpenams or 3-carbamoyloxycephams, respectively.

Abstract: An improved process for the preparation of 1-N-?.omega.-amino-.alpha.-hydroxyalkanoyl!kanamycins comprises acylating a polysilylated kanamycin in a substantially anhydrous organic solvent with an acylating derivative of an .omega.-amino-.alpha.-hydroxyalkanoic acid.

Abstract: Penicillin sulfoxide esters are reacted with an isocyanate to produce the corresponding (substituted)-2-carbamoyloxymethylpenam, the corresponding (substituted)-3-carbamoyloxycepham or the corresponding 3-methylcephem. The 6- or 7-side-chain of these products may be cleaved to give the corresponding 6-amino (penams) or 7-amino (cephams and cephems) compounds, and the latter may be reacylated to produce different 6-acyl-2-carbamoyloxymethyl penams, 7-acyl-3-carbamoyloxy cephams and 7-acyl-3-methylcephems. The substituent groups may be removed from the (substituted)-2-carbamoyloxypenams or the (substituted)-3-carbamoyloxycephams to give the corresponding free 2-carbamoyloxymethylpenams or 3-carbamoyloxycephams, respectively.

Abstract: Penicillin sulfoxide esters are reacted with an isocyanate to produce the corresponding (substituted)-2-carbamoyloxymethylpenam, the corresponding (substituted)-3-carbamoyloxycepham or the corresponding 3-methylcephem. The 6- or 7-side-chain of these products may be cleaved to give the corresponding 6-amino (penams) or 7-amino (cephams and cephems) compounds, and the latter may be reacylated to produce different 6-acyl-2-carbamoyloxymethyl penams, 7-acyl-3-carbamoyloxy cephams and 7-acyl-3-methylcephems. The substituent groups may be removed from the (substituted)-2-carbamoyloxypenams or the (substituted)-3-carbamoyloxycephams to give the corresponding free 2-carbamoyloxymethylpenams or 3-carbamoyloxycephams, respectively.

Abstract: Trimethylsilyl or another easily hydrolyzed ester of 6-trimethylsilyloxycarbonylaminopenicillanic acid was prepared by bubbling dry carbon dioxide into an anhydrous solution of the corresponding 6-trimethylsilylaminopenicillanate and found to be a useful intermediate in the production of penicillins, e.g., amoxicillin and ampicillin, by its acylation in anhydrous media with the appropriate acid chloride or acid chloride hydrochloride.

Abstract: An improved process for the preparation of 1-N-[.omega.-amino-.alpha.-hydroxyalkanoyl]aminoglycoside antibiotics comprises acylating a polysilylated aminoglycoside antibiotic in a substantially anhydrous organic solvent with an acylating derivative of an .omega.-amino-.alpha.-hydroxyalkanoic acid.