Abstract: Systems and techniques for providing a landing system to an electric aircraft that can support both conventional take-off and landings as well as vertical take-off and landings, while minimizing drag, tire scrub, and camber when landing. The systems and techniques may include a mechanical assembly of a landing gear system. The mechanical assembly may comprise an oleo-pneumatic strut located within a fuselage of the electric aircraft and a suspension assembly housed within fairing(s). The suspension assembly may include a swing arm, a side brace arm, and a kingpin.

Abstract: A stripping system that includes a securement device including a receiver platform and an engagement platform sized to receive at least a portion of a large diameter cable having an outer jacket defining a thickness of at least 0.5 mm. The engagement platform translates relative to the receiver platform to secure the cable to the securement device. The system includes a cutting device including a receiver platform that includes a first cutting apparatus and an engagement platform that includes a second cutting apparatus. The receiver platform is sized to receive at least a portion of the cable. The engagement platform translates relative to the receiver platform to move the second cutting apparatus toward the first cutting apparatus to define a cutting interface that is sized to partially sever the outer jacket such that at least a portion of the 0.5 mm thickness of the outer jacket remains partially intact.

Abstract: A combination, handheld device for holding and loading/unloading a sample cell with a fluid sample, while the device is in a vertical orientation, is provided. The handheld device has a sample cell holder for selectively, removably holding the sample cell when the sample cell is in need of being filled with a fluid for testing in the polarimeter or is in need of being emptied of a fluid already tested in the polarimeter, and a sample cell fluid loader/unloader connected to and extending from, or unitarily formed with, the holder, the loader/unloader in fluid communication with the sample cell when the sample cell is held in the holder. Methods of loading and unloading a sample cell with a fluid sample using a combination, handheld device, are also provided.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: A stripping system that includes a securement device including a receiver platform and an engagement platform sized to receive at least a portion of a large diameter cable having an outer jacket defining a thickness of at least 0.5 mm. The engagement platform translates relative to the receiver platform to secure the cable to the securement device. The system includes a cutting device including a receiver platform that includes a first cutting apparatus and an engagement platform that includes a second cutting apparatus. The receiver platform is sized to receive at least a portion of the cable. The engagement platform translates relative to the receiver platform to move the second cutting apparatus toward the first cutting apparatus to define a cutting interface that is sized to partially sever the outer jacket such that at least a portion of the 0.5 mm thickness of the outer jacket remains partially intact.

Abstract: A liquid sample loader for an analytical instrument includes a sample holder with a sample well for holding a liquid sample and a sample passageway extending upwardly at an inclined angle from a bottom portion of the well, a pump positioned upstream from the sample holder and an upstream passageway coupled between the sample and the pump. A controller controls the pump to push the sample in the sample well downstream through the sample passageway toward the measuring instrument.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: A sample cell filling device for filling a sample cell to be used remotely from a polarimeter is provided. The filling device includes a liquid-sealed housing, light source and a diffuser viewing screen. The housing has a recess for receiving the sample cell, the sample cell having first and second optical windows at the respective ends. A light source transmits light from one optical window to the other optical window. A diffuser viewing screen receives light exiting from the sample cell such that light from the viewing screen can be observed by a user to determine the quality of the sample fill.

Abstract: A liquid sample loader for an analytical instrument includes a sample holder with a sample well for holding a liquid sample and a sample passageway extending upwardly at an inclined angle from a bottom portion of the well, a pump positioned upstream from the sample holder and an upstream passageway coupled between the sample and the pump. A controller controls the pump to push the sample in the sample well downstream through the sample passageway toward the measuring instrument.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: A liquid sample loader for an analytical instrument includes a sample holder with a sample well for holding a liquid sample and a sample passageway extending upwardly at an inclined angle from a bottom portion of the well, a pump positioned upstream from the sample holder and an upstream passageway coupled between the sample and the pump. A controller controls the pump to push the sample in the sample well downstream through the sample passageway toward the measuring instrument.

Abstract: A sample cell filling device for filling a sample cell to be used remotely from a polarimeter is provided. The filling device includes a liquid-sealed housing, light source and a diffuser viewing screen. The housing has a recess for receiving the sample cell, the sample cell having first and second optical windows at the respective ends. A light source transmits light from one optical window to the other optical window. A diffuser viewing screen receives light exiting from the sample cell such that light from the viewing screen can be observed by a user to determine the quality of the sample fill.

Abstract: Dental cement compositions (including two-part compositions), kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: Two-part resin-reinforced cement compositions, kits, and related methods are used for bonding a dental prosthetic appliance to a tooth. A first part includes an amine activator component and a zinc oxide reactive filler, while a second part includes a polymerization initiator (e.g., benzoyl peroxide) and a polymerizable component having a structure including at least one acrylate or methacrylate group at one end and a carboxylic acid group at another end. A temporary cement composition advantageously exhibits reduced compressive and/or bonding strength relative to permanent cement compositions, which provides sufficient strength to facilitate normal use of the teeth while the provisional appliance is in use, while also facilitating easy removal of the provisional appliance for replacement with a permanent appliance at a later time.

Abstract: A critical-angle refractometer which utilizes an in image of light reflected from an optical interface with a vessel containing a sample under test to determine an optical property of the sample, sample properties are evaluated to prevent improper testing of the sample. This evaluation includes establishing reflectance information associating the amount of reflection with locations in the image; and utilizing a plurality of properties of the reflectance information to determine if the vessel contains a proper sample under test.

Abstract: A critical-angle refractometer which utilizes an in image of light reflected from an optical interface with a vessel containing a sample under test to determine an optical property of the sample, sample properties are evaluated to prevent improper testing of the sample. This evaluation includes establishing reflectance information associating the amount of reflection with locations in the image; and utilizing a plurality of properties of the reflectance information to determine if the vessel contains a proper sample under test.

Abstract: A sealing arrangement for connecting a first pipe and a second pipe. The sealing arrangement includes a first flange and a second flange circumferentially disposed on the first pipe and the second pipe respectively. The sealing arrangement further includes a damping member. The damping member includes a first slanted side supported by the first flange. In the sealing arrangement, the second flange couples with the first flange. The damping member provides a compression seal between the first pipe and the second pipe. Further, the damping member is configured to reduce the vibrations in the sealing arrangement.

Abstract: An oscillatory measurement system is disclosed that includes a visual recorder for detecting irregularities such as bubbles in a fluid to be measured. Techniques are provided for scanning the recorder across the oscillatory tube.