Compounds of the formula (I) wherein X is O or S, useful for the inhibition of the replication of HIV-1 and reverse transcriptase mutants thereof, in vitro and in vivo.

PURPOSE: A solar heat panel collecting apparatus is provided to achieve improved effects of heat collection by reducing leakage of the light reflected from the involute reflector. CONSTITUTION: A solar heat panel collecting apparatus comprises a plurality of heat collectors including a pair of involute reflectors(1) arranged symmetrically with each other and a vacuum tube type heat collecting pipe...

PROBLEM TO BE SOLVED: To provide a manufacturing method of a gold bonding wire by which the frequency of occurence of breaking in a thin gold wire during drawing is reduced and drawing speed is improved. SOLUTION: In the manufacturing method of the gold bonding wire by which a gold ingot is made into a thin wire by performing wire drawing after the ingot is rolled into a wire, the surface of the w...

PROBLEM TO BE SOLVED: To provide a metal casting mold body which improves its abrasion resistance used when machining or processing is performed to a material, and its manufacturing method. SOLUTION: The metal casting mold body is the one which contains at least one of an effective surface (2) for performing the machining or the processing to the material and is formed of composite material, and t...

PROBLEM TO BE SOLVED: To provide an inexpensive power transmission with excellent torque transmission and capable of outputting high torque at a low speed and capable of starting, creep traveling and hill holding when it is applied to a vehicle in particular, and to improve on-vehicle property by miniaturizing and reducing weight. SOLUTION: This power transmission is provided with a planet gear PG...

PROBLEM TO BE SOLVED: To make a four-wheel drive device small and compact by integrally constituting a center differential mechanism and an axle differential mechanism. SOLUTION: This four-wheel drive device for a vehicle has the center differential mechanism and a front wheel side axle differential mechanism. The center differential mechanism is constituted of a first planetary gear device of a s...

PROBLEM TO BE SOLVED: To make a four-wheel drive device small and compact by integrally constituting a center differential mechanism and an axle differential mechanism. SOLUTION: This four-wheel drive device for a vehicle has a center differential mechanism for diving rotary driving force from an engine E into front and rear wheels and a front wheel side axle differential mechanism for dividing th...

PROBLEM TO BE SOLVED: To solve a failure of imparting a sense of incongruity to a driver by suddenly changing steering characteristics of a vehicle when turning the vehicle. SOLUTION: This driving force distribution control device is provided with a control means for controlling the operation of a driving force distribution means based on detected vehicle state quantity. The control means performs...

PROBLEM TO BE SOLVED: To avoid a state that a lane maintaining by a lane maintaining control cannot be performed caused by acceleration by an inter-vehicle distance control. SOLUTION: Lane maintaining continuable speed VL is calculated based on a curve curvature &beta z in front of a vehicle (step S6). When set speed Vc is more than the lane maintaining continuable speed VL and a preceding vehicle...

PROBLEM TO BE SOLVED: To suppress and prevent imparting of a sense of incongruity to a driver when reducing speed of a self-vehicle according to speed reduction of a preceding vehicle. SOLUTION: When a follow-up traveling mode for making the self-vehicle follow the preceding vehicle is set, braking force and driving force are calculated to make an actual inter-vehicle distance L coincide with a ta...

PROBLEM TO BE SOLVED: To smoothly switch a motor driving traveling to an engine driving traveling. SOLUTION: The hybrid vehicle is constituted of a torque converter TC linked with an engine E, a gear type shift mechanism, shift clutches 13c and 14c for setting speed change stages, a driving force transmission system for transmitting output rotation to a driving wheel 6 and a second motor generator...

PROBLEM TO BE SOLVED: To provide a control device capable of avoiding drop of driving torque during regripping after a driving wheel slips. SOLUTION: This device has a means for deciding slip of the driving wheel (step S1), a means for executing a plurality of slip corresponding controls including either one of a special control for a power source and a special control for a continuously variable ...

PROBLEM TO BE SOLVED: To provide a booming noise prevention control device for an engine for a vehicle capable of suppressing generation of lock-up shock or booming noise, while improving fuel economy. SOLUTION: Generation of booming noise to damage a driving environment can be suppressed, even if an engagement region or a slip region of a lock-up clutch 26 is expanded, since a driving cycle of th...

PROBLEM TO BE SOLVED: To increase the degree of freedom in the mounting design of a vehicle speed sensor, and reduce the number of part items by omitting, for example, a member for protecting the vehicle speed sensor. SOLUTION: A vehicle is so designed that an engine 12 is suspended from a vehicle body frame 11, the engine 12 transmits output to final reduction gear 44, the final reduction gear 44...

"CURA DE PLACAS POSITIVAS". A invenção refere-se a um processo para cura rápida de placas positivas de acumuladores de chumbo, no qual as placas são separadas e tratadas individualmente e por um espaço de tempo menor do que 3 horas com vapor de água, sendo que a cura ocorre a temperaturas ambientes acima de 60<198>C, e na cura é controlado o tipo de sulfato de chumbo formado. Isto é obtido, por ex...

An extensible positioning device of the shank of an umbrella includes an outer tube, an inner tube, an adjusting cylinder and a fixing cylinder. The inner tube may telescope in the outer tube. The outer tube has holes spaced apart horizontally in a lower portion for compressing members of positioning arms of the fixing cylinder to move in and out. The adjusting cylinder has female threads formed i...

A holder for canes, umbrellas and similar accessories comprising a tubular member to which a high-friction textured contact surface is attached is disclosed. When the holder is attached to the accessory the user may hang the accessory on a table or other horizontal surface with a reduced possibility that the accessory will slip.

A portable shelter including a light-weight frame that is collapsible and supports a strong, light-weight covering or skin that is removably secured to the frame is disclosed. The frame may include a base which supports a plurality of articulated arms that are movable between an extended and a non-extended position by the provision of a tension wire. A main roof having an opening therethrough is p...

A storage container resembling a pager for storing and organizing items in a discrete and disguised manner. The storage container resembling a pager includes a housing that has a front wall and a back wall. A bottom wall and a first side wall and a second side wall are coupled to and extend between the front and back walls to define a storage compartment that has an open top. A cover is pivotally ...

Ultra-small satellite droplets of molten metal, generated from capillary stream break-up, are selectively directed to predetermined locations on a substrate. The satellite droplets are produced at a high rate and are highly uniform because of the nature of capillary stream break-up. Applied harmonic disturbances are used to control and generate the satellite and parent droplets. The satellite drop...