摘要:
A security instrument and method of forming the same, in which the instrument is comprised of a series of layers which overlay one another, and in which at least one of the layers has a pattern imprinted thereon in a predetermined location, with pearlescent materials of varying colors and hues. When the layers are bonded together on a base member, a design emerges at the surface that provides optical variations, depending on the attitude and lighting at which the instrument is viewed.
摘要:
A class of metallocene compounds is disclosed having general formula (I) wherein Y is a moiety of formula (II) wherein A, B, and D, same or different from each other, are selected from an element of the groups 14 to 16 of the Periodic Table of the Elements (new IUPAC version), with the exclusion of nitrogen and oxygen; R1, R2, R3, R4 and R5 are hydrogen or hydrocarbon groups, Z is selected from a moiety of formula (II) as described above and from a moiety of formula (III) wherein R6, R7, R8 and R9, are hydrogen or hydrocarbon groups; L is a divalent bridging group; M is an atom of a transition metal selected from those belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table of the Elements (new IUPAC version), X, same or different, is hydrogen, a halogen, a R10, OR10, OSO2CF3, OCOR10, SR10, NR102 or PR102 group, wherein the substituents R10 are hydrogen or alkyl groups; p is an integer of from 1 to 3, being equal to the oxidation state of the metal M minus 2. The above metallocenes are particularly useful in the polymerization of propylene.
摘要:
A composite structure includes a self-supporting substrate and a thermal barrier coating of zirconia stabilized with scandia and yttria. A method of protecting the surface of a self-supporting substrate from degradation caused by exposure to temperatures above 1200.degree. C. includes the step of applying to the surface a coating of zirconia stabilized with scandia and yttria.
摘要:
A coating of india-stabilized zirconia protects a self-supporting substraterom high temperatures, as well as vanadate and sulfate corrosion. In one method of making such a protected substrate, a coating of india-stabilized zirconia is applied to the substrate. The substrate can be a metal or ceramic surface of a gas turbine or other type of engine.
摘要:
An apparatus for dispensing a bagel is provided which is aesthetically pleasing, sanitary and requires a minimal amount of area. Specifically described is a dispenser comprising: a base comprising a front, a top, a right side and a left side and a pair of matching parallel slots along each right side and left side; a pusher assembly on top of the base comprising; a contact face; an inclined plate; a pair of support members attached to the inclined plate and extending downward wherein each support member further comprises a hole aligned with one slot; a rod, and associated handle, protruding through the front of the base; a connector attached to the rod comprising; a pair of fingers wherein each finger extends through one of the matching parallel slots of the base and into the hole of the support member; a storage column comprising; a front exit slot; a rear entrance slot.
摘要:
This invention relates to thermographic recording films including both a topcoat and a washcoat. The washcoat comprises at least one quaternary ammonium salt including at least one hydroxyl functional group, and a compound containing at least two epoxide moieties. The subject washcoat, in conjunction with the topcoat, reduces printer head build-up and streaking of the printed image film while simultaneously increases the anti-stat and slip properties of the film.
摘要:
The invention pertains generally to ultrasonic imaging systems and is more particularly directed to use of such systems for nondestructive testing to measure the thickness of parts, or to examine parts suspected of having internal flaws but where access is often limited to the external surfaces. The invention makes thickness and flaw determinations of substantial accuracy without resulting to use of an expensive ultra high frequency clock to measure time.
摘要:
Novel compounds have a formula (I) ##STR1## wherein ##STR2## represents a bicyclo [2,2,1] hept-2Z-ene, bicyclo [2,2,1] heptane, 7-oxa-bicyclo [2,2,1] hept-2Z-ene, 7-oxa-bicyclo [2,2,1] heptane, bicyclo [2,2,2] oct-2Z-ene or bicyclo [2,2,2] octane substituted at the 5-position by the group R.sup.1 and at the 6-position by the group ANR.sup.2 R, a 6,6-dimethyl-bicyclo [3,1,1] heptane substituted at the 2-position by the group R.sup.1 and at the 3-position by the group ANR.sup.2 R or at the 2-position by the group ANR.sup.2 R and at the 3-position by the group R.sup.1, a cyclohex-1-ene or cyclohexane substituted at the 4-position by the group R.sup.1 and at the 5-position by the group ANR.sup.2 R or a 1-hydroxycyclopentane substituted at the 2-position by the group R.sup.1 and at the 2-position by the group ANR.sup.2 R, R.sup.1 is a 6-carboxyhex-2-enyl group or a modification thereof as defined herein; A is an unbranched or branched aliphatic hydrocarbon group with a chain length between the points of attachment to the divalent cyclic group and to the group NR.sup.2 R of 1 to 5 carbon atoms or such a group substituted by an aromatic group; R.sup.2 is hydrogen, an aliphatic hydrocarbon group, an aromatic group or an aliphatic hydrocarbon group substituted by an aromatic group or groups; and R is a group --CO.NR.sup.3 R.sup.4, --CS.NR.sup.3 R.sup.4, --CNH.NR.sup.3 R.sup.4, --CO.R.sup.4 or --CS.R.sup.4 in which R.sup.3 is hydrogen, an aliphatic hydrocarbon group, an aromatic group or an aliphatic hydrocarbon group substituted by an aromatic group or groups, and R.sup.4 is an aliphatic hydrocarbon group, an aromatic group or an aliphatic hydrocarbon group substituted directly by an aromatic group or groups and/or through an oxygen or sulphur atom either by an aromatic group or by an aliphatic hydrocarbon group substituted directly by an aromatic group or groups. The compounds are of value for use in pharmaceutical compositions particularly in the context of the inhibition of thromboxane activity.
摘要翻译:新化合物具有式(I)其中表示双环[2,2,1]庚-2Z-烯,双环[2,2,1]庚烷,7-氧杂双环[ 2,2,1]庚-2Z-烯,7-氧杂双环[2,2,1]庚烷,双环[2,2,2]辛-2Z-烯或双环[2,2,2]辛烷取代 在R5位置的5位和ANR2R基的6位,6位二甲基 - 双环[3,1,1]庚烷在2位被R1和3位取代 - 由ANR2R基团或在ANR2R基团的2位上,在3位被R1基团取代,在4-位上被R1基团取代的环己-1-烯或环己烷, 位置由ANR2R基团或1-位羟基环戊烷在2-位被基团R1取代,2-位被ANR2R基团取代,R1是如本文所定义的6-羧基己-2-烯基或其修饰; A是与二价环状基团连接的点与1〜5个碳原子的基团NR2R之间的链长的非支链或支链脂族烃基,或者被芳基取代的基团; R2是氢,脂族烃基,芳香族基团或被芳族基团取代的脂族烃基; 并且R是基团-CO.NR 3 R 4,-CS.NR 3 R 4,-CNH.NR 3 R 4,-CO.R 4或-CS.R 4,其中R 3是氢,脂族烃基,芳族基团或脂族烃基被 芳基或基团,R 4是脂族烃基,芳基或脂族烃基,其被芳族基团或基团和/或通过氧或硫原子直接被芳族基团或脂族烃基取代 直接由芳族基团取代。 这些化合物在药物组合物中是有用的,特别是在抑制血栓素活性的情况下。
摘要:
A compound crossbow in which a forwardly disposed retractable arrow launch ramp is utilized to retain an arrow in position for discharge. Activation of the trigger discharges the arrow and simultaneously moves the retractable arrow launch ramp to a position which does not interfere with the forward travelling arrow. The retractable arrow rest permits the archer to move without the risk of the arrow moving into a position precluding the archer from discharging the arrow. The arrow launch ramp is removed completely from the flight path of the arrow prior to the arrow arriving at the arrow launch ramp position.