摘要:
Particles of an amino acid such as leucine may be formed from an amino acid vapor, for example by aerosol condensation, or by spray drying. The amino acid particles have a bulk density of not more than 0.1 gcm−3 or have a mass median aerodynamic diameter of not more than 10 μm or are in the form of flakes having a thickness of not more than 100 μm. The inclusion of the particles of amino acid in powder for use in dry powder inhalers has been found to improve the respirable fraction of the active material in the powder.
摘要:
A method of balancing a first turbomachine module (20), comprising along an axis of rotation a bearing plane (22) on one side and a junction plane (24) on the other, with respect to a rotor (1) comprising said module (20), in whichan equivalent complementary module is defined such that the two modules form a rotor equivalent to said rotor by assembling along the junction plane (24), the total unbalance of said equivalent rotor and the corresponding correction to be made to said module are determined, which method comprises the following steps: the concentricity deviation of the bearing (22) of the first module (20) with respect to the axis perpendicular to the junction plane (24) is determined; the theoretical geometric unbalance of said equivalent complementary module is calculated; a short journal (40) is mounted on the first module adjacent to the junction plane (24) to form a short rotor whose axis of rotation is substantially coincident with the axis of the module (20) and the unbalance of the short rotor is measured; and the total unbalance of said module is determined by adding to the unbalance of the short rotor a systematic unbalance corresponding to the geometric unbalance.
摘要:
The invention relates to isolated human pluripotent adult stem cells which express CD13, CD34, CD56 and CD117, and which do not express CD1O, which are capable of differentiating in all three germ lineages and differentiated cells derived therefrom.
摘要:
Cellulose mixed esters are disclosed having low molecular weights and low degrees of polymerization. These new cellulose mixed esters include cellulose acetate propionate and cellulose acetate butyrate. The esters exhibit solubility in a wide range of organic solvents with minimal viscosity increase, are compatible with a wide variety of resins, and are useful in coatings and inks compositions as binder resins and rheology modifiers.
摘要:
Systems and methods in accordance with the present invention provide for an implementation of the XQuery standard, and such an implementation will be referred to herein as an XQuery (XML Query language) implementation. An XQuery implementation can be based on a token stream representation, which allows large XML documents to be processed without having to first read the entire document. An XQuery implementation can also utilize a streaming XQuery engine. A set of algorithms and a set of rewrite rules can be used for the implementation. Given a query, a set of rules can be applied to that query to transform the query into another query. Some of these rules allow the resulting query to be streamable. In other words, a query that would otherwise require an XML document to be read into memory can now be transformed into a query that can work on an XML stream. The type system of the XQuery language can be based on XML Schema, and the basic types of XML Schema can have derived types. The XQuery programs can execute in a context comprising of variable bindings, namespaces, operators, default parameters, etc. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.
摘要:
The invention provides systems and methods for implementation of a computer language type system by augmenting finite state automata algorithms to accommodate symbols having both subtype relationships and nested types. To make the classical automata algorithms work for type system with subtypes, finite state automata for a data type is augmented by additional transitions that include secondary symbols, wherein secondary symbols are subtypes of symbols of alphabet of finite state automata. A data type when compared to another data type must compare both names and the contents.
摘要:
The present invention relates to pluripotent stem cells, particularly to pluripotent embryonic-like stem cells. The invention further relates to methods of purifying pluripotent embryonic-like stem cells and to compositions, cultures and clones thereof. The present invention also relates to a method of transplanting the pluripotent stem cells of the present invention in a mammalian host, such as human, comprising introducing the stem cells, into the host. The invention further relates to methods of in vivo administration of a protein or gene of interest comprising transfecting a pluripotent stem cell with a construct comprising DNA which encodes a protein of interest and then introducing the stem cell into the host where the protein or gene of interest is expressed. The present also relates to methods of producing mesodermal, endodermal or ectodermal lineage-committed cells by culturing or transplantation of the pluripotent stem cells of the present invention.
摘要:
A pressure control system for controlling pressure of a fluid in a chamber includes a pressure sensor configured to measure the pressure of the fluid in the chamber, and a valve configured to control the pressure of the fluid in the chamber by regulating flow of the fluid from the chamber. The pressure control system further includes a controller. The controller is configured to estimate the volume of the chamber, and to generate a pump speed curve of the valve. The controller is further configured to monitor and modify the pump speed curve so as to maintain a slope of the pump speed curve to at least a minimum value, and to use the modified pump speed curve to adjust the position of the valve in response to pressure measurements by the pressure sensor, so as to maintain the pressure in the chamber at a desired pressure setpoint.
摘要:
An endovascular graft adapter for use in abdominal aortic aneurysms comprising a graft adapter body defining an upper graft adapter section member and a lower graft adapter section member. The upper and lower graft adapter section members respectively have a pair of cut-out sections formed through sidewalls thereof and both pairs of cut-out sections are respectively aligned with the right and left renal arteries. The upper graft adapter section member has an upper axially directed through passage extending from a proximal end to a distal end thereof and the lower graft adapter section member has a lower axially directed through passage extending from a proximal end to a distal end thereof. The upper and lower axially directed through passages are in alignment each with respect to the other.
摘要:
Valve assemblies are disclosed including a housing having a flow channel and an annular surface surrounding the flow channel, a slide plate movable to a closed position, and a seal ring positioned between the annular surface and the slide plate. The seal ring can include first and second sides, a first surface extending between the sides and facing towards the annular surface of the housing, and a second surface axially spaced from the first surface and extending between the first and the second sides and facing towards the slide plate. The second surface can include a continuous annular sealing portion for contacting the slide plate when the seal ring is biased against the slide plate so that a fluid-tight seal can be formed between the continuous annular sealing portion and the slide plate, and at least one passageway positioned between the annular sealing portion and the second side.