Abstract: A novel system and methods for accelerating analytes including, without limitation, molecular ions, biomolecules, polymers, nano- and microparticles, is provided. The invention can be useful for increasing detection sensitivity in applications such as mass spectrometry, performing collision-induced dissociation molecular structure analysis, and probing surfaces and samples using accelerated analyte.

Abstract: A magnetic field generating module includes a housing, a plurality of interpoles, a plurality of short poles and a plurality of windings. The housing has an annular section and an inner side. The interpoles disposed on the inner side in the housing are arranged around an inner periphery of the annular section with the same intervals. The short poles are disposed on the inner side in the housing and distributed between the interpoles evenly. A first interval is formed between the adjacent short poles, and a second interval equal to the first interval is formed between each of the interpoles and the adjacent short pole. The windings are respectively disposed corresponding to the interpoles and located between the interpoles and the short poles. The magnetic field generating module of the invention has more concentrated magnetic lines so as to prompt the magnetic flux density and the magnetic force.

Abstract: A magnetic navigation control apparatus includes a sensing unit, a control unit and a magnetic field generating unit. The sensing unit generates a sensing signal according to the position of a magnetic element. The control unit is electrically connected with the sensing unit and generates a first control signal and a second control signal according to the sensing signal. The magnetic field generating unit is electrically connected with the control unit and has a housing, a plurality of interpoles, and a plurality of short poles. The interpoles are disposed in the housing. The short poles are disposed between the interpoles evenly. The magnetic field generating unit generates a navigation signal according to the first control signal, thereby controlling the magnetic element to move in at least one direction within a target region. The magnetic navigation control apparatus has greater magnetic navigation effects, and can thus reduce the cost.

Abstract: A discontinuous conduction current mode maximum power limitation photovoltaic converter connects to a ground and a solar cell having a temperature compensation signal and an output power and being solarized and comprises a direct current/direct current voltage converter and a maximum power control circuit. The direct current/direct current voltage converter connects to the solar cell, comprises an input terminal and an output terminal, offers a stable voltage and has an output voltage signal and an inner current. The maximum power control circuit connects to the direct current/direct current voltage converter and the solar cell, controls the direct current/direct current voltage converter to limit the output power of the solar cell to maximum and comprises a temperature compensation feedback circuit, an output voltage feedback circuit, a current detection circuit and a main control circuit.

Abstract: The configurations of an electronic ballast are provided in the present invention. The proposed electronic ballast includes a filter circuit having a first and a second output terminals, a rectifier circuit having a first input terminal, a second input terminal coupled to the second output terminal of the filter circuit, and a first output terminal, and a continuous-conduction-mode charge pump PFC circuit including a first inductor having a first terminal coupled to the first input terminal and a second terminal coupled to the first output terminal of the filter circuit, a second inductor having a first terminal and a first capacitor having a first terminal coupled to the first terminal of the first inductor and a second terminal coupled to the first terminal of the second inductor.

Abstract: A control circuit controls a power output module and drives a load device. The control circuit includes a conversion unit, a feed-forward unit, a feedback unit and a control unit. The conversion unit generates a driving signal according to an output signal of the power output module for driving the load device. The feed-forward unit generates a duty cycle reference signal according to the output signal. The feedback unit generates a feedback signal according to the driving signal. The control unit outputs a control signal to control the conversion unit according to the duty cycle reference signal and feedback signal, thereby limiting the output power of the power output module within the maximum power region. A tracking method of the maximum power is also disclosed.

Abstract: A novel system and methods for accelerating analytes including, without limitation, molecular ions, biomolecules, polymers, nano- and microparticles, is provided. The invention can be useful for increasing detection sensitivity in applications such as mass spectrometry, performing collision-induced dissociation molecular structure analysis, and probing surfaces and samples using accelerated analyte.

Abstract: A safety injector comprises a needle hub attached by a needle, a hollow barrel for engaging with the needle hub and guiding the needle hub to retract into the hollow barrel, and a plunger combination settled in the hollow barrel. The plunger combination comprises a retractable plunger and a hollow plunger partially telescoped with the retractable plunger, wherein at least one raised portion is formed on an outer wall of the retractable plunger and at a telescoping portion for engaging at least one depression formed on an inner wall of the hollow plunger so that when the plunger combination continuously receives a pushing force after the safety injector is used to perform the injection operation, the retractable plunger can smoothly retract into the hollow plunger. Consequently, a space in the hollow barrel can be spared for accommodating the retracted needle hub.

Abstract: A mass spectrometer and methods for obtaining the mass spectrum of a single macromolecular or biomolecular ion in a mass spectrometer. The methods include creating single macromolecular or biomolecular primary ions in an ion trap by ionization of a macromolecule or biomolecule; ejecting half of the primary ions for detection with a first charge detector; ejecting half of the primary ions to impact upon a conversion dynode, thereby creating secondary ions for detection with charge amplification detector such as a channeltron or an electromultiplier or an MCP.

Abstract: Methods and apparatuses for portable mass spectrometry are disclosed. The apparatuses comprise at least one source of ionized analyte, at least one frequency scanning subsystem, at least one detector, and optionally at least one vacuum pump, and are portable. In some embodiments, the apparatuses comprise multiple sources of ionized analyte and/or are configured to obtain mass spectra of a large analyte, such as analyte with an m/z ratio of at least 105, or analyte with a molecular weight of at least 105 Da, as well as mass spectra of small molecule analyte. In some embodiments, the methods comprise obtaining mass spectra with a portable apparatus described above.

Abstract: A novel system and methods for accelerating analytes including, without limitation, molecular ions, biomolecules, polymers, nano- and microparticles, is provided. The invention can be useful for increasing detection sensitivity in applications such as mass spectrometry, performing collision-induced dissociation molecular structure analysis, and probing surfaces and samples using accelerated analyte.

Abstract: The present invention discloses a current regulation module for providing a predetermined current. The current regulation module comprises a linear power conversion circuit, a switching power conversion circuit, a current detector, and a controller. The current detector is used to detect the output current of the current regulation module and output a detected current value. The controller control the switches in the linear power conversion circuit and the switching power conversion circuit in accordance with the detected current value, to strengthen the dynamic response ability to the sudden change in the output current.

Abstract: A safety injector comprises a needle hub attached by a needle, a hollow barrel for engaging with the needle hub and guiding the needle hub to retract into the hollow barrel, and a plunger combination settled in the hollow barrel. The plunger combination comprises a retractable plunger and a hollow plunger partially telescoped with the retractable plunger, wherein at least one raised portion is formed on an outer wall of the retractable plunger and at a telescoping portion for engaging at least one depression formed on an inner wall of the hollow plunger so that when the plunger combination continuously receives a pushing force after the safety injector is used to perform the injection operation, the retractable plunger can smoothly retract into the hollow plunger. Consequently, a space in the hollow barrel can be spared for accommodating the retracted needle hub.

Abstract: A medically safety injector comprises a needle hub attached by a needle, a hollow barrel for engaging with the needle hub and guiding the needle hub to retract into the hollow barrel, and a plunger combination settled in the hollow barrel. The plunger combination comprises a retractable plunger and a hollow shank partially telescoped with the retractable plunger, wherein at least one raised portion is formed on an outer wall of the retractable plunger and at a telescoping portion for engaging at least one depression formed on an inner wall of the hollow shank so that when the plunger combination continuously receives a pushing force after the medically safety injector is used to perform the injection operation, the retractable plunger can smoothly retract into the hollow shank. Consequently, space in the hollow barrel can be spared for accommodating the retracted needle hub.

Abstract: A safe medical-drug injector with a collapsable plunger combination thereof is proposed. The injector includes a hub connected with a needle, a hollow barrel, and a collapsable plunger combination including a hollow cannula and a retractable plunger that is telescoped with the hollow cannula. At least a stress adjustable notch is formed at the core of the retractable plunger or in an upper edge of the hollow cannula, and at least one raised portion is formed on an outer lateral side of the retractable plunger near the stress adjustable notch to be correspondingly embedded with at least a depression formed on an inner lateral side of the hollow cannula. The engagement between the raised portion and the depression is released to make the retractable plunger drawn back to the hollow cannula when a following press is applied on the hollow cannula after the safe medical-drug injector completes an injection.

Abstract: This invention of a prepacked automatic retractable safety syringe comprises a needle hub with a needle tube and a rubber washer, a cap, a barrel, a spring, a vial, and a retractable plunger. To prevent or reduce injuries of needle stab and protect medical staffs, a forward action of the vial plus the needle hub compressed by the retractable plunger can drive a sliding movement between slides on the needle hub and snap hooks on the barrel via the spring's force to complete automatic retraction of the needle hub as well as the vial when an injection is finished.

Abstract: This invention of the automatically retractable safety blood sampler comprises a needle with a needle hub, a needle tube, a rubber washer, and a protective sheath, a cap, a barrel, a spring, and a blood collection tube. With blood collected, the blood collection tube is used for coercing the needle head to move forward, driving a sliding movement between slides on the needle hub and the snap hook on the barrel via the spring's force to automatically complete retraction of the needle head.

Abstract: The present invention discloses a current regulation module for providing a predetermined current. The current regulation module comprises a linear power conversion circuit, a switching power conversion circuit, a current detector, and a controller. The current detector is used to detect the output current of the current regulation module and output a detected current value. The controller control the switches in the linear power conversion circuit and the switching power conversion circuit in accordance with the detected current value, to strengthen the dynamic response ability to the sudden change in the output current.

Abstract: A safe medical-drug injector with a collapsible plunger combination thereof is proposed. The injector includes a hub connected with a needle, a hollow barrel for guiding the needle hub to draw back to the hollow barrel, and the collapsible plunger combination including a hollow cannula and a retractable plunger that are in sleeve joint. A least a stress adjustable notch is formed at the core of the retractable plunger or in an upper edge of the hollow cannula, and at least one raised portion is formed on an outer lateral side of the retractable plunger near the stress adjustable notch to be correspondingly embedded with at least a depression formed on an inner lateral side of the hollow cannula.

Abstract: The subject disclosure pertains to systems and methods for providing a user interface for mobile devices. The user interface can include a search function that utilizes user input to search multiple software applications and data sources. Content can be retrieved and presented to a user without requiring the user to navigate to the underlying application or sources supplying the content. The applications or content sources can be local to the mobile device or remotely located, such as an Internet site. One or more types of data can be retrieved and presented to a user based upon the user input. Search results can be displayed and dynamically updated as additional user input is obtained.