Abstract: The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a first aqueous hydrochloric-acid solution of titanium oxychloride, where, in the first separation stage (2), small droplets of hydrochloric-acid titanium oxychloride solution (3) are flowed with the exhaust gas flow, and larger droplets of hydrochloric-acid titanium oxychloride solution are flowed counter current to the exhaust to remove the smaller droplets and ensure that virtually no droplets are carried to a second separation stage. In the second separation stage, a second titanium oxychloride solution is injected into a second reactor (9), the second solution having a lower titanium oxychloride concentration than that injected in the first separation stage.

Abstract: There is provided an ultra high vacuum (UHV) compatible lead-through comprises (a) a housing, (b) a first space, within the housing, connected via a first port to a space outside the UHV-compatible lead through, (c) a second space, within the housing, connected via a second port to a closed system containing a polarized gas, (d) a movable component, separating the first space from the second space via an intermediate space, and (e) seals for limiting a penetration of volatile media from the first space into the second space. The lead through is particularly suited for use in the production of polarized gases, such as 3He.

Abstract: Delivery of genetic material to a stimulation site causes transgene expression by tissue at the stimulation site. In some embodiments, the delivered genetic material causes increased expression of proteins, such as connexins, gap junctions, and ion channels, to increase the conductivity of the tissue at the stimulation site. In some embodiments, the delivered genetic material causes expression of a metalloproteinase, an anti-inflammatory agent, or an immunosuppressant agent. Genetic material is delivered to the stimulation site via a stimulation lead. A stimulation lead for delivering genetic material to a stimulation site includes a chamber that contains a polymeric matrix. The matrix absorbs the genetic material and elutes the genetic material to the stimulation site.

Abstract: An elongate medical electrical lead conductor includes a layer of hydrolytically stable polyimide formed thereover.

Abstract: The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a first aqueous hydrochloric-acid solution of titanium oxychloride, where, in the first separation stage (2), small droplets of hydrochloric-acid titanium oxychloride solution (3) are flowed with the exhaust gas flow, and larger droplets of hydrochloric-acid titanium oxychloride solution are flowed counter current to the exhaust to remove the smaller droplets and ensure that virtually no droplets are carried to a second separation stage. In the second separation stage, a second titanium oxychloride solution is injected into a second reactor (9), the second solution having a lower titanium oxychloride concentration than that injected in the first separation stage.

Abstract: A test signal generator at a transmitter station and a facsimile generator at a receiver station go through an acquisition and tracking process which aligns the two signals so that a logical processor can compute the frequency transfer function of the entire propagation path for use in an adaptive, concurrently sent communication signal. The frequency transfer function is conveyed back to the transmit end via a control channel permitting an adaptivity function at the transmit end to influence subsequent selection of communication parameters, among which are typically transmitted data rate, selection of modulation, selection of forward error correcting coding, and selection of frequency band for transmission. The same measurement is conveyed to an adaptivity function at the receive end for use in the communications receiver to select demodulator variables such as gain control, and equalization of amplitude and phase, versus frequency.

Abstract: The invention provides a method of detecting regional variations in oxygen uptake from the lungs of an air-breathing animal subject, said method comprising administering into the lungs of said subject a diagnostically effective amount of a gaseous hyperpolarized magnetic resonance imaging agent, detecting the magnetic resonance signal from said agent in said lungs, determining the temporal variation in relaxation rate for said signal for at least one region of interest within said lungs, and from said variation generating a qualitative or quantitative value or image indicative of the oxygen uptake from the alveolar space in said at least one region of interest.

Abstract: The invention relates to a method for determining the degree of polarization (P) of a nuclear spin polarized gas, in particular 3He, 129Xe, in which the nuclear spin polarized gas is placed in a container, comprising determining the magnetic field Bd of the pola gas by measuring the magnetic dipole field emerging therefrom and then determining from Bd the degree of polarization of the gas.

Abstract: A device for the low-deformation support of an optical element (2), in particular of an end plate of a lens in a projection printing system for semiconductor elements, is provided with a mount (1), the optical element (2) being connected to the mount (1) at least partly via a bonding layer which is located between the adjacent circumferential walls (4, 5) of mount (1) and optical element (2). The mount (1) is provided with at least three bearing feet (3) which are distributed over the circumference and on which the optical element (2) rests. The bonding layer is located in an annular gap (6) between the adjacent circumferential walls (4, 5) of mount (1) and optical element (2) over at least one section thereof.

Abstract: The invention concerns an element with at least one moveable component, in particular compressors and valves for a device in order to produce polarized gases, in particular 3He-gas, featuring:

Abstract: The invention provides a method of detecting regional variations in oxygen uptake from the lungs of an air-breathing animal subject, said method comprising administering into the lungs of said subject a diagnostically effective amount of a gaseous hyperpolarized magnetic resonance imaging agent, detecting the magnetic resonance signal from said agent in said lungs, determining the temporal variation in relaxation rate for said signal for at least one region of interest within said lungs, and from said variation generating a qualitative or quantitative value or image indicative of the oxygen uptake from the alveolar space in said at least one region of interest.

Abstract: The invention provides a method of detecting regional variations in oxygen uptake from the lungs of an air-breathing animal subject, said method comprising administering into the lungs of said subject a diagnostically effective amount of a gaseous hyperpolarized magnetic resonance imaging agent, detecting the magnetic resonance signal from said agent in said lungs, determining the temporal variation in relaxation rate for said signal for at least one region of interest within said lungs, and from said variation generating a qualitative or quantitative value or image indicative of the oxygen uptake from the alveolar space in said at least one region of interest.

Abstract: A chemo-thermo applicator insertable into a tubular membrane in the body of an individual to occupy a site therein in which the surface of the membrane is disrupted by cancerous lesions. The applicator includes concentric inner and outer tubular balloons in which the annular space therebetween is filled with a chemotherapy supply the outer balloon being perforated. In operation, a stream of heated air is fed into the inner balloon which acts to inflate this balloon and to heat the supply to cause it to melt and form a cream. Inflation of the inner balloon acts to expand the outer balloon causing it to conform to the surface of the membrane. The pressure imposed on the supply as the inner balloon expands, forces the heated cream to extrude through the outer balloon perforations to coat the surface of the membrane with the heated cream which then functions as a chemo-thermo agent to destroy the cancerous lesions.

Abstract: An apparatus for filling flexible bags with a fluent material that includes a receiving bay, a curvilinear cylinder and a support frame. The receiving bay has an open top for receiving fluent material and funnels down to a discharge opening. The curvilinear cylinder has a top input opening attached to the discharge opening, a bottom output opening, and a curvilinear sidewall therebetween. The curvilinear sidewall has a front wall with an outwardly and downwardly projecting portion that has a predetermined length and extends away from an opposing rear wall of the curvilinear sidewall at a predetermined angle of inclination relative to the vertical direction. The support frame is attached to and supports the receiving bay or the curvilinear cylinder such that the bottom output opening of the curvilinear cylinder is suspended at a predetermined clearance height above the ground.

Abstract: A prism shaped in the form of a truncated obround, has one end defining an aperture through which a cat can enter. Internally, the hedron defines a plenum but transcending through a sector of the hedron, the plenum is sub-divided into a first and second sub-plenum by a sieve preferably in the shape of a plurality of spatially disposed parallel slats extending from front to rear. On the upper margin of the sieve is a collection station adapted to collect solid and urine saturated waste from a cat. The interior of the hedron is partially filled with granular cat litter and on defecation of a cat, the solid and urine saturated waste are consumed, in part, by the cat litter.