摘要:
A computer system implements a standard modem without the use of a microcontroller. Instead, a digital signal processor is provided on an expansion card, but with direct links to the computer system itself. The code usually implemented in the microcontroller is instead implemented as a virtual modem controller to be called by the operating system of the computer itself. Further, this virtual modem controller includes a virtualized UART, that appears to the operating system software as a hardware UART, with entry points for calls to replace input/output instructions. In this way, standard device driver code written to execute input/output operations is easily converted to operate with the “virtualized” UART.
摘要:
A computer system implements a standard modem without the use of a microcontroller. Instead, a digital signal processor is provided on an expansion card, but with direct links to the computer system itself. The code usually implemented in the microcontroller is instead implemented as a virtual modem controller to be called by the operating system of the computer itself. Further, this virtual modem controller includes a virtualized UART, that appears to the operating system software as a hardware UART, and the operating system driver software need not even have its input and output instructions replaced. Instead, debug registers are provided as breakpoints whenever an input/output instruction is executed to the I/O port range at which the UART would normally appear.
摘要:
Glycoproteins, especially glycosylated hemoglobins, are separated from non-glycosylated proteins, by complexing with a dihydroxyboryl reactive agent. The resulting complex can be separated physically from the non-glycosylated protein, making possible the determination of glycosylated hemoglobin content of lysed blood; a reactive agent and a kit are described for use in such determination and as a monitor in the control of diabetic treatment. The invention can also be used preparatively to isolate glycoproteins.
摘要:
An instant access guitar system allowing easy access to cavities in the body portion of the electric guitar. The cavities are covered by plates, a pick guard, flexible laminates or other suitable cover materials. The covers are held in place by magnets that magnetically attach to magnetic material mounted in the guitar body. The appearance of the guitar may be changed by changing the pick guard and the decorative laminate on the headstock. The sound of the guitar may be changed by having unique pickups and wiring releases pre-built in multiple configurations on multiple pick guards as modules to change in and out of the guitar at will with no tools or solder.
摘要:
This invention provides novel tetrazole intermediates of the formula ##STR1## wherein R.sup.1 and R.sup.4 each are independently hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or trifluoromethyl;R.sup.2,R.sup.3,R.sup.5 and R.sup.6 each are independently hydrogen, halogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy;B is hydrogen, C.sub.1-4 alkoxycarbonyl, CH.sub.2 Y or CH.sub.2 Z;Y is hydrogen, hydroxyl or X;Z is ##STR2## X is bromo, chloro or iodo; R.sup.10 is C.sub.1-4 alkyl; andR.sup.11 is phenyl which is unsubstituted or substituted by one or two C.sub.1-4 alkyl or chloro substituents.and processes thereof which are useful for the preparation of antihypercholesterolemic agents.
摘要:
An instant access guitar system allowing easy access to cavities in the body portion of the electric guitar. The cavities are covered by plates, a pick guard, flexible laminates or other suitable cover materials. The covers are held in place by magnets that magnetically attach to magnetic material mounted in the guitar body. The appearance of the guitar may be changed by changing the pick guard and the decorative laminate on the headstock. The sound of the guitar may be changed by having unique pickups and wiring releases pre-built in multiple configurations on multiple pick guards as modules to change in and out of the guitar at will with no tools or solder.
摘要:
Aminobutanoic acids of the following formula (I): ##STR1## where R.sup.1 -R.sup.5 are a variety of substituents, novel intermediates, a pharmaceutical composition for treating inflammatory diseases, demyelinating diseases, and tumor metastasis, methods for such treatment and processes for preparing compounds of formula (I).
摘要:
Compounds are described of the formula ##STR1## wherein: R.sup.1 is C.sub.3-6 alkyl or C.sub.1-3 alkylthioC.sub.1-3 alkyl;R.sup.2 is an optionally substituted C.sub.1-6 alkyl or C.sub.1-6 alkoxy group, aryl, heteroaryl, arylC.sub.1-4 alkyl, heteroarylC.sub.1-4 alkyl or a side-chain of a natural .alpha.-amino acid;R.sup.3 is hydrogen, C.sub.1-6 alkyl, CHR.sup.4 COR.sup.5 (where R.sup.4 is a side-chain of a natural .alpha.-amino acid and R.sup.5 is hydroxyl, C.sub.1-6 alkoxy or NHR.sup.6 where R.sup.6 represents a hydrogen atom or a C.sub.1-6 alkyl group) or a group (CH.sub.2).sub.n X (where n is 1 to 6 and X is hydroxyl, C.sub.1-4 alkoxy, heteroaryl or a group NR.sup.7 R.sup.8 where R.sup.7 and R.sup.8 are each hydrogen or C.sub.1-6 alkyl or the group NR.sup.7 R.sup.8 forms a 5 to 7 membered cyclic amine); andHet is an optionally substituted cyclic imide where the cyclic imide ring system has the formula (i), (ii) or (iii) ##STR2## in which A, B, C and D are each CH or 1 or 2 of A, B, C and D represents N and the others represent CH, and E and F may each independently represent CH or N; and physiologically acceptable salts and solvates thereof.These compounds inhibit metalloproteases involved in tissue degradation. Compounds of the invention may be formulated for use in a variety of conditions involving tissue degradation including arthropathy, dermatological conditions, bone resorption, inflammatory diseases, tumour invasion and multiple sclerosis and related diseases involving myelin degradation, and in the promotion of wound healing.
摘要:
This invention provides novel tetrazole intermediates of the formula ##STR1## wherein R.sup.1 and R.sup.4 each are independently hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or trifluoromethyl;R.sup.2, R.sup.3, R.sup.5 and R.sup.6 each are independently hydrogen, halogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy;B is hydrogen, C.sub.1-4 alkoxycarbonyl, CH.sub.2 Y or CH.sub.2 Z;Y is hydrogen, hydroxyl or X;Z is ##STR2## X is bromo, chloro or iodo; R.sup.10 is C.sub.1-4 alkyl; andR.sup.11 is phenyl which is unsubstituted or substituted by one or two C.sub.1-4 alkyl or chloro substituents.and processes thereof which are useful for the preparation of antihypercholesterolemic agents.
摘要:
An instant access guitar system allowing easy access to cavities in the body portion of the electric guitar. The cavities are covered by plates, a pick guard, flexible laminates or other suitable cover materials. The covers are held in place by (1) cut-outs in the guitar body and (2) magnets that magnetically attach to magnetic material mounted in the guitar body. The appearance of the guitar may be changed by changing the pick guard and the decorative laminate on the headstock. The sound of the guitar may be changed by having unique pickups and wiring releases pre-built in multiple configurations on multiple pick guards as modules to change in and out of the guitar at will with no tools or solder.