This invention relates to 2,6-dihalobenzyl esters. There are provided 2,6-dihalobenzyl esters of formula I: (I) where R1 and R2 are independently selected from fluoro, chloro and bromo, Y1 is chloro, and Y2 is fluoro or chloro, provided that when R1 and R2 are both bromo Y2 is fluoro and when neither of R1 and R2 is bromo, at least one of R1 and R2 is the same as at least one of Y1 and Y2; m...

The present invention relates to a method and an apparatus for carrying out production logs in an eruptive well. The apparatus is characterised in that it comprises sealing means (9), measuring means designed for processing at least part of the upstream flow and/or of the downstream flow in relation to said sealing means (9), and means (10A, 10B, 19, 33) for controlling the pressure difference on ...

This invention relates to an apparatus for grinding a semiconductor wafer (W) which includes a table (2) having a work stage (10) on which a semiconductor wafer to be ground is placed, at least the work stage being rotated, and a grinding wheel (3) which is moved in a direction perpendicular to or parallel to the work stage while being rotated about an axis parallel to a rotational axis of the wor...

Security apparatus for detection of a security tag to be hidden in an article to be detected. The digitized waveshape of a tag signature signal preferably obtained by distortion of an oscillating magnetic field, (whereby the distortion signal being detected constitutes a signature signal) is compared with a stored digital representative of a signature signal, and an alarm enable signal is generati...

A combination pneumatic tire and integrated circuit transponder for tire identification. The transponder (24) is located within the tire structure and is capable of transmitting an identifying digital signal in response to interrogation by an R/F electric field emanating from outside the tire (22). The transponder (24) then transmits the identifying signal, which is received, conditioned and demod...

Biocompatible compostie consists of a substrate with a ceramic layer of: a hydroxy-apatite cermamic phase (I) in which Ca:P mol ratio= 1.50-1.75. The surface of the layer is roughened, having voids and exposing (I). The layer pref. comprises sub-layers in which the content of (I) inccreases towards the layer surface; some sub-layers may have th same content of (I) as that of an adjacent sub-layer....

While specialists have hitherto been unanimous in their opinion, strengthened by observation, that an implant made of titanium or similar material should have a surface roughness of more than 20 mu m, so that the bone connects satisfactorily to the implant, it has been found that a significant improvement in the connection between bone and implant can be achieved when the latter is provided with ...

Perhaloalkylvinylcyclopropanecarboxylates having the general formula are disclosed wherein one of Y and Z is a perhaloalkyl group having 1 to 4 carbon atoms and the other is hydrogen, halogen, lower alkyl, phenyl, phenylthio or benzyl, with the proviso that Y and Z may be combined to form a perhalocyclopentylidene group; R is halogen, hydroxy, lower alkoxy or -OR<1> in which R<1> represen...

An apparatus for the production of plastic pipes with transverse grooves comprising half shells each having a mold recess which are arranged on a machine bed driven in a cycle. The half shells are assembled in pairs in a molding path to form a complete mold, the injection head of an extruder being arranged at the beginning of the molding path. Furthermore, the half shells are provided with vacuum ...

Optical interference structures incorporating porous films. These structures are capable of exhibiting a colour by interference effects caused by the interference of light reflected from various layers within the structure. Basically, the structures comprise a reflective substrate (10), a porous transparent dielectric film (11) on the substrate and at least one semi-transparent layer supported by ...

A process for producing a two phase metal/oxide film. The process comprises forming a porous oxide film (10) on a substrate (11), introducing a weakened stratum (12) into the oxide film so that the film (10) (or at least an outer part of the film) can be subsequently detached along the weakened stratum, depositing a metal (13, 14) on and/or within the pores of the film, and detaching at least the ...

72434-109 A diagnostic expert system incorporating a cause-effect graph in which "yes", "no" and "unknown" are valid possible responses to a query. Each node in the cause-effect graph is assigned a local decision factor based on its desirability for selection during best-first search of the cause-effect graph and a collapsed decision factor based on the average values of the local decision factors...

This invention relates to new pyranoderivatives of the formula: wherein X1 is H, Cl or Br and Z stands for: wherein X2 is H, Cl or Br, T is O or S and Y stands for an arabinose, xylose or ribose moiety, the acetylated form of the same, with either a pyranose or furanose configuration and bound to the R moiety of either the alpha or the beta anomer, to a preparation process ...

This invention relates to new pyranoderivatives of the formula: wherein X1 is H, Cl or Br and Z stands for: wherein X2 is H, Cl or Br, T is O or S and Y stands for an arabinose, xylose or ribose moiety, the acetylated form of the same, with either a pyranose or furanose configuration and bound to the R moiety of either the alpha or the beta anomer, to a preparation process ...

The present invention relates to an absorption body (4) intended for an absorbent product, such as a sanitary towel or an incontinence guard, and comprising an absorbent material, preferably cellulose fluff, which increases in weight continuously from the edge margins (6) of the article in towards the centre part (5) thereof. According to the invention, the absorption body (4) is compressed to an ...

A sanitary napkin. The sanitary napkin comprises a central absorbent pad and flaps extending from each longitudinal edge of the central absorbent pad. The body of each flap contains a flexible axis about which the flap can fold on itself. The sanitary napkin preferentially bends at the line of juncture between each flap and the longitudinal edge of the central absorbent pad. When the sanitary napk...

The invention concerns a heating window using the parietal-dynamic effect. The opening frame of a conventional window (22) is fitted with an inner heating over-glazing (9, 10). Air (24, 25) circulates between the glazing of the opening frame and the over-glazing. It penetrates from the exterior through aperatures in the lower section of the opening frame and then emerges into the interior of ...

In this method, the floor section 15 is produced by means of plate girders 18, 20 being bonded to blocks of cellular plastic 22, 23 with application of panels 19, 20 maintaining such strength in the adhesion joints that the cellular plastic block acts as a stiffening element in the floor block.

To produce a panel of variable thickness, a stratified assembly of a layer of fibers containing a non-polymerized binder and at least one cover sheet is placed between the mold and mold-backing of a molding press. The stratified assembly is caused to conform to the interior surface of the mold or mold-backing by forcing the cover sheet against the mold or mold-backing interior. Hot air is blown in...

A method of performing cataract surgery on an eye to prevent posterior capsule clouding after the surgery includes injecting a cell-killing substance between the capsule and the natural lens prior to removing the natural lens from the eye. The cell-killing substance is preferably water having a salinity less than 0.9%, with a preferred salinity range of from 0 to 0.6%. A syringe for injecting the ...