摘要:
The present invention relates to a hydrophilic surface structure of the non-hydrophilic substrate and the manufacturing method for using the same. The hydrophilic substrate surface structure is fabricated by forming an amphiphilic polymer layer, a cross-linked stacking layer, and a hydrophilic layer in sequence on the surface of a non-hydrophilic substrate. For example, the hydrophobic surface of poly(dimethylsiloxane) (PDMS) can be made from hydrophobic to hydrophilic and the hydrophilicity can be retained for a long period of time and resist protein adsorption. The hydrophilic thin films give long term stability to the PDMS surface by resisting hydrophobicity recovery, which is the major problem with PDMS. The disclosed method can further be used in the immobilization of protein and other molecules. This method can also be used for modifying other substrates which suffer problems of surface instability.
摘要:
The present invention relates to a hydrophilic surface structure of the non-hydrophilic substrate and the manufacturing method for using the same. The hydrophilic substrate surface structure is fabricated by forming an amphiphilic polymer layer, a cross-linked stacking layer, and a hydrophilic layer in sequence on the surface of a non-hydrophilic substrate. For example, the hydrophobic surface of poly(dimethylsiloxane) (PDMS) can be made from hydrophobic to hydrophilic and the hydrophilicity can be retained for a long period of time and resist protein adsorption. The hydrophilic thin films give long term stability to the PDMS surface by resisting hydrophobicity recovery, which is the major problem with PDMS. The disclosed method can further be used in the immobilization of protein and other molecules. This method can also be used for modifying other substrates which suffer problems of surface instability.
摘要:
The present invention provides an integrated microfluidic electrospray chip system and analytical method thereof, characterized in which the proteinase reaction, solid-phase extraction mechanism, electrophoresis and mass spectrometry are integrated into one system. This system allows continuous, fast and on-line detection and identification of a sample, where the sample is firstly hydrolyzed and desalted, and then introduced into the microfluidic electrospray chip to undergo electrophoresis. Finally, the separated sample is introduced into a mass spectrometer by means of electrospray for continuous detection and identification. This system applies mainly in the identification of biochemical substances, such as proteins.
摘要:
The present invention provides a splitter including a seat, a first inner core, a second inner core, a first coil, an outer core and a second coil. The seat has a bobbin, and the first coil is wound on the bobbin. The first inner core and the second inner core, disposed on the bobbin, are assembled with each other to cover the bobbin. The outer core and the first inner core are assembled with each other. The second coil is disposed between the outer core and the first inner core.
摘要:
The present invention relates to a sample analysis system with chip-based electrophoresis device, particularly, the chip electrophoresis is connected to the dynamic flow-based auto-sampling device to introduce the sample into the chip-based electrophoresis device. By utilizing the derivatization biochemistry method to have a surface modification on the sample loading channel, it prevents the sample from being adhered to the wall of the sample loading channel, and hence increases the sample loading rate, reduces cross-contamination of samples and performs specific bio-reaction by using the immobilization of matter including antigen, antibody, protein, or enzyme. This invention makes use of the continuous split flow and electric voltage control to work with the detecting unit, signal collecting unit, and signal processing unit so that the sample undergoes a timely, fast, continuous analysis without having interference from the sample of other time.
摘要:
A layout structure of a central processing unit (CPU) that supports two different package techniques, having a motherboard that comprising the layout structure and a layout method. The layout structure of the preferred embodiment according to the present invention from up to down sequentially placed a top signal layer, a grounded layer, a power layer having an operating potential area and a grounded potential area, and a bottom solder layer in the area where the signals of the CPU are coupled to the signals of the control chip, so that the signals that are placed on the bottom solder layer can refer to a grounded potential area of the power layer.
摘要:
Novel methods for the preparation of sidechain-bearing taxanes, comprising the preparation of an oxazoline compound, coupling the oxazoline compound with a taxane having a hydroxyl group directly bonded at C-13 thereof to form an oxazoline sidechain-bearing taxane, and opening the oxazoline ring of the oxazoline sidechain-bearing taxane so formed. Novel compounds prepared by the methods of the present invention are also provided.
摘要:
The present invention relates to novel prodrug forms of ribonucleoside diphosphate reductase inhibitors 3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) 3-amino-4-methylpyridine-2-carboxaldehyde thiosemicarbazone (3-AMP) which have increased water solubility, bioavailablity and resistance to in vivo acetylation of their amino functions. Novel compounds according to the present invention relate to those of the formula: ##STR1## where R.sup.4 is H or CH.sub.3 and R.sup.5 is CHR, benzyl or ortho or para substituted benzyl; R is H, CH.sub.3, CH.sub.2 CH.sub.3, CH.sub.2 CH.sub.2 CH.sub.3 or ##STR2## R' is a free acid phosphate, phosphate salt or an --S--S--R" group; R" is CH.sub.2 CH.sub.2 NHR.sup.6, CH.sub.2 CH.sub.2 OH, CH.sub.2 COOR.sup.7, an ortho or para substituted alkylphenyl and ortho or para substituted nitro-phenyl; R.sup.6 is H, C.sub.1 -C.sub.4 acyl group, trifluoroacetyl, benzoyl or substituted benzoyl group, and R.sup.7 is H, C.sub.1 -C.sub.4 alkyl or a benzyl or substituted benzyl.
摘要:
This invention relates to a fluorinated taxol of formula I ##STR1## in which R.sup.1 is --COR.sup.z in which R.sup.z is RO-- or R;R.sup.g is C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl, or a radical of the formula --W--R.sup.x in which W is a bond, C.sub.2-6 alkenediyl, or --(CH.sub.2).sub.t --, in which t is one to six; and R.sup.x is naphthyl, furyl, thienyl or phenyl, and furthermore R.sup.x can be optionally substituted with one to three same or different C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halogen or --CF.sub.3 groups;R.sup.2 is --OCOR, H, OH, --OR, --OSO.sub.2 R, --OCONR.sup.o R, --OCONHR, --OCOO(CH.sub.2).sub.t R, or --OCOOR; andR and R.sup.o are independently C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.3-6 cycloalkyl, C.sub.2-6 alkynyl, or phenyl, optionally substituted with one to three same or different C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halogen or --CF.sub.3 groups.Further provided by this invention are pharmaceutical formulations and useful intermediates for the fluorinated taxols of formula I. A method of treating mammalian tumors using a compound of formula I is also provided.
摘要:
A caliper piston adjuster includes a body defining a passage, a push rod, a resilient member, a holding rod, a positioning stop plate, and a positioning member. The push rod is fixedly connected with a positioning cart, and mounted with the resilient member, and inserted through the passage of the body, such that one end of the resilient member contacts the positioning part fixed at the push rod. The push rod is connected with a connector and an activating disc respectively at two ends thereof. The connector is connected with the holding rod. The positioning member is inserted through an opening of the positioning stop plate to be connected to the body. With the aid of the resilient member, the caliper piston adjuster can adjust the piston of a caliper cylinder more easily by rotating the holding rod.