Showing papers on "Tripod (photography) published in 2018"
TL;DR: In this paper, a series of centrifuge tests were carried out in medium dense sand, which were fabricated with an identical amount of material and back-analysed using an advanced hypoplastic model to offer further insights into the test results.
42 citations
TL;DR: In this paper, a laser-cooled gas of strontium atoms coupled to laser fields through a 4-level resonant tripod scheme was studied, where the relative phases of the tripod beams were cycled to realize non-Abelian SU(2) geometrical transformations acting on the dark states of the system.
Abstract: Topology, geometry, and gauge fields play key roles in quantum physics as exemplified by fundamental phenomena such as the Aharonov-Bohm effect, the integer quantum Hall effect, the spin Hall, and topological insulators. The concept of topological protection has also become a salient ingredient in many schemes for quantum information processing and fault-tolerant quantum computation. The physical properties of such systems crucially depend on the symmetry group of the underlying holonomy. We study here a laser-cooled gas of strontium atoms coupled to laser fields through a 4-level resonant tripod scheme. By cycling the relative phases of the tripod beams, we realize non-Abelian SU(2) geometrical transformations acting on the dark-states of the system and demonstrate their non-Abelian character. We also reveal how the gauge field imprinted on the atoms impact their internal state dynamics. It leads to a new thermometry method based on the interferometric displacement of atoms in the tripod beams.
36 citations
TL;DR: Spectroscopic studies of the dizinc peroxides, as well as on model zinc diazides, suggest H-bonding contributions serve a dominant role for the binding/activation of these small molecules.
Abstract: Six directed hydrogen bonding (H-bonding) interactions allow for the reversible capture and reduction of dioxygen to a trans-1,2-peroxo within a tripodal zinc(II) framework. Spectroscopic studies of the dizinc peroxides, as well as on model zinc diazides, suggest H-bonding contributions serve a dominant role for the binding/activation of these small molecules.
33 citations
21 citations
TL;DR: Non-Abelian geometric phase in laser-coupled ultracold strontium atoms is shown by using a tripod scheme and it is revealed how the gauge field imprinted on the atoms impact their internal state dynamics.
Abstract: Topology, geometry, and gauge fields play key roles in quantum physics as exemplified by fundamental phenomena such as the Aharonov-Bohm effect, the integer quantum Hall effect, the spin Hall, and topological insulators. The concept of topological protection has also become a salient ingredient in many schemes for quantum information processing and fault-tolerant quantum computation. The physical properties of such systems crucially depend on the symmetry group of the underlying holonomy. We study here a laser-cooled gas of strontium atoms coupled to laser fields through a 4-level resonant tripod scheme. By cycling the relative phases of the tripod beams, we realize non-Abelian SU(2) geometrical transformations acting on the dark-states of the system and demonstrate their non-Abelian character. We also reveal how the gauge field imprinted on the atoms impact their internal state dynamics. It leads to a new thermometry method based on the interferometric displacement of atoms in the tripod beams.
18 citations
TL;DR: In this paper, a new generated axial force estimation model of tripod-type constant velocity joints was proposed, and kinematic analysis was performed to derive the reliabilities of CV joints.
Abstract: This study proposes a new generated axial force (GAF) estimation model of tripod-type constant velocity (CV) joints. For development of the model, kinematic analysis was performed to derive the rel...
16 citations
TL;DR: The authors' calculations revealed the extent of structural heterogeneity introduced by the different conformers, and the individual role of tripod molecular conformers in the surface-confined metal-organic self-assembly was deciphered.
9 citations
Patent•
31 Jul 2018
TL;DR: In this article, the authors described a tripod with three groups of supporting legs, a supporting column is hollow, a platform is arranged at the upper part of the supporting column, an upper synchronous belt wheel is erected on the platform and is coaxially and fixedly connected to a worm gear arranged on the ground, the worm gear meshes with a worm arranged on a platform, the worms are connected to the hand wheel, and a bottom support is placed at the bottom of the bottom support.
Abstract: The invention discloses a tripod device convenient to operate and an operation method thereof, and belongs to the field of tripods. The tripod device comprises a supporting column and three groups ofsupporting legs, the supporting column is hollow, a platform is arranged at the upper part of the supporting column, an upper synchronous belt wheel is erected on the platform and is coaxially and fixedly connected to a worm gear arranged on the platform, the worm gear meshes with a worm arranged on the platform, the worm is connected to a hand wheel, a bottom support is arranged at the bottom ofthe supporting column, a lower synchronous belt wheel is arranged on the bottom support, the lower synchronous belt wheel and the upper synchronous belt wheel are in transmission connection through asynchronous belt arranged in the supporting column, a sliding hoop is arranged on the supporting column and penetrates through a sliding groove formed in the side wall of the supporting column to be connected to the synchronous belt, and the supporting legs are connected to the sliding hoop through connecting rods. The tripod device has the advantages that the folding and stretching operation is quite simple, an operator does not need to bend down to operate, and therefore the manual labor of the operator can be reduced.
7 citations
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22 Jun 2018
TL;DR: In this article, an anti-falling tripod is presented, in which the structure design of an air bag assembly is adopted in a cavity of a support, when the tripod falls down, the support collides with the ground to enable a sensor component to generate impact induction, collision signals are transmitted to a control unit, the control unit controls a gas generator to instantaneouslygenerate a large amount of gas to enable air bag cushions to expand, the expanded air bags are guided by guide plates and extend outwards in the circumferential direction of lining plates, soth
Abstract: The invention discloses an anti-falling tripod. According to the anti-falling tripod, structure design of an air bag assembly is adopted in a cavity of a support, when the tripod falls down, the support collides with the ground to enable a sensor component to generate impact induction, collision signals are transmitted to a control unit, the control unit controls a gas generator to instantaneouslygenerate a large amount of gas to enable air bag cushions to expand, the expanded air bag cushions are guided by guide plates and extend outwards in the circumferential direction of lining plates, sothat circumferential wrapping of the support devices such as a measurement instrument is formed instantly, the buffer protection effect of the device is achieved, the direct contact between the device and the ground is avoided, and therefore the functions of safety protection and anti-falling use of the supporting device are effectively achieved; and meanwhile, structure design with the fixing pointed ends capable of rotating is adopted, when the device is used for the ground with hard texture, and the fixing pointed ends can be rotated to enable the fixing pointed ends to be in a parallel state with the ground so as to be in horizontal contact with the ground so that the use function requirements of the tripod in different texture environments can be effectively realized.
7 citations
TL;DR: In this paper, a solid system with rotating eccentrics as internal movers is investigated and the system moves with dry friction, where the massive eccentric converts its rotational motion into rotation of the body (tripod).
TL;DR: In this study, torsion fatigue tests for the failure modes were conducted, and strain data was collected by strain sensors from around the fuse of the shaft using the modified Mahalanobis distance as a health indicator and the fuse thresholds for the anomaly detection (AD) were defined using the three-sigma method.
Abstract: The tripod shafts used in high-speed trains transmit the power of a motor to axle reduction units. A tripod shaft is designed as a shaft with a protective fuse because the load applied to the reduction units is very large during operation. Fuse failure can lead to accidents and economic loss, such as train service interruption and repair problems at the accident site. Therefore, detecting the faults of fuses used in tripod shafts by using sensors is necessary. In this study, torsion fatigue tests for the failure modes were conducted, and strain data were collected by strain sensors from around the fuse of the shaft. The modified Mahalanobis distance was employed as the health indicator, and the fuse thresholds for the anomaly detection (AD) were defined using the three-sigma method. The AD performance of the tripod shafts was evaluated by comparing the results with real crack detection times.
Patent•
12 Jun 2018
TL;DR: In this paper, the authors described a selfie stick with a rod body and a gear, which can stably shoot on uneven ground, the height control of the selfie stick is more accurate, the adjustment of a camera shooting angle is quick and easy, the positioning is fast, and the shooting quality is good.
Abstract: The invention discloses a tripod head type selfie stick with a tripod. The tripod head type selfie stick comprises the tripod and a rod body, the tripod comprises a base, and the base is connected with supporting feet; the base is provided with a spherical groove, and a plurality of round holes are formed in the outer side of the spherical groove; the rod body includes a rod sleeve, and the rod sleeve is internally provided with a mounting groove; a moving ball is connected to the rod sleeve, and a limiting rod is arranged on the rod sleeve in a inserted mode; the moving ball is arranged in the spherical groove, and a lifting rod is arranged in the mounting groove in an inserted mode; the lifting rod is provided with tooth slots, and the outer side of the lifting rod is provided with a gear; a cylindrical rubber seat is mounted on the head portion of the lifting rod, and the head portion of the limiting rod is inserted into the tooth grooves; the gear is connected to the rod sleeve through a rotating shaft, and a support table is arranged on the top of the cylindrical rubber seat; wave grooves are formed in both the top surface of the cylindrical rubber seat and the bottom surfaceof the support table, and a rectangular frame is mounted on the top surface of the support table; and a tripod head is mounted in the rectangular frame. A selfie stick can stably shoot on uneven ground, the height control of the selfie stick is more accurate, the adjustment of a camera shooting angle is quick and easy, the positioning is fast, and the shooting quality is good.
TL;DR: In situ temperature-programmed electrospray-differential mobility analysis provides a quantitative, statistical analysis of mobility diameter, dynamic shape factor, polydispersity, and colloidal stability, which significantly improves the suspension stabilization of tripod AuNPs.
Abstract: Here we aim to develop a facile emulsion-based method to prepare tripod gold nanoparticles (AuNPs) with high suspension stability in an aqueous environment. A gyroid-structured polymer template formed by the hydrolysis of a degradable block copolymer, polystyrene (PS)-b-poly(L-lactide), is used for the fabrication of AuNPs. Also, a successful emulsification of dichloromethane (DCM) in the aqueous phase is developed by using thiolated polyethylene glycol (PEG-SH) as the stabilizer. Subsequently, the nanohybrids of PS/Au can be fabricated by templated electroless plating, and then selectively dissolving in the DCM dispersive phase. Most interestingly, a dedicated process for the simultaneous release of the tripod AuNPs from the dissolution of PS associated with PEG-SH at the interface of the emulsion is achieved, giving PEG-SH-functionalized tripod AuNPs dispersed in the aqueous phase, which significantly improves the suspension stabilization of tripod AuNPs. The in situ temperature-programmed electrospray-differential mobility analysis provides a quantitative, statistical analysis of mobility diameter, dynamic shape factor, polydispersity, and colloidal stability.
11 Jun 2018
TL;DR: In this article, a planar tripod model with an amphiphilic surface pattern was synthesized experimentally and dissipative particle dynamics (DPD) simulations were used to study the self-assembled morphologies of tripod nanoparticles.
Abstract: We have studied the self-assembled morphologies of tripod nanoparticle solutions confined in nanoslits using dissipative particle dynamics (DPD) simulations. In the present study, composite-shaped nanoparticles, like a planar tripod model with an amphiphilic surface pattern, were also synthesized experimentally. Using the DPD results at various values of a hydrophobic ratio (HR) and arm length (AL), we create phase diagrams of the self-assembled morphologies of tripod nanoparticles. With each of the two parameters, we observe three morphologies in the tripod nanoparticle solution. Further, potential energy vs. temperature for various tripod nanoparticle solutions is compared for different self-assembled structures. Our simulations offer a guide to control the morphologies of self-assembled tripod nanoparticles, which constitute novel systems that may find applications in nanofluidic devices.
TL;DR: In the present study, SAMs of a rigid molecular tripod consisting of an adamantane core and three CH2SH groups were employed to arrange ferrocene on a gold surface through oligo(p-phenyleneethynylene) linkers.
Abstract: The three-point adsorption of tripod-shaped molecules enables the formation of robust self-assembled monolayers (SAMs) on solid surfaces, where the component molecules are fixed in a strictly upright orientation. In the present study, SAMs of a rigid molecular tripod consisting of an adamantane core and three CH2SH groups were employed to arrange ferrocene on a gold surface through oligo(p-phenyleneethynylene) linkers. Cyclic voltammetry of the monolayers demonstrated high surface coverage of ferrocene, yet the molecular interaction among adjacent ferrocene units was negligible. This was because of the extended intermolecular distance caused by the bulky tripod framework. The rates of electron transfer from the ferrocene to the gold surface through different linker lengths were determined by electrochemical measurements, from which the decay factor for oligo(p-phenyleneethynylene) wire was evaluated.
TL;DR: New tripod-type 2,2,2′-bipyridine ligand consisting of a central polyaminocarboxylic moiety for the coordination to lanthanide cations and three appended 5-phenyl-2, 2, 2′-binaridine fragments for the co
Abstract: New tripod-type 2,2′-bipyridine ligand consisting of a central polyaminocarboxylic moiety for the coordination to lanthanide cations and three appended 5-phenyl-2,2′-bipyridine fragments for the co
Patent•
09 Mar 2018
TL;DR: In this article, an outburst type warning triangle can be used more conveniently and stably, thereby providing an effect of increasing reliability of tripod installation, and a folding and unfolding mechanism provided on the main shaft and the tripod to fold and unfold in an umbrella structure.
Abstract: The present invention relates to an outburst type warning tripod capable of automatic deployment, comprising: a spindle with a long rod-shaped structure; a polymer provided on the front of a main shaft to provide a load for flying and landing a safety tripod; a wing provided at the rear of the main shaft; a tripod connected to the main shaft so as to be unfolded; a folding and unfolding mechanism provided on the main shaft and the tripod to allow the tripod to be folded and unfolded in an umbrella structure; and a tripod releasing mechanism provided on the main shaft to operate the folding and unfolding mechanism when the safety tripod is brought into contact with a floor so that the tripod is unfolded. By doing so, the outburst type warning triangle can be used more conveniently and stably, thereby providing an effect of increasing reliability of tripod installation.
TL;DR: In this paper, the authors reported the optimization on the covalent grafting methodology of a tripod-shaped penta(p-phenylene), 1, on alkynyl-terminated silicon surfaces, and the incorporation of an active theophylline derivative, 2, for the specific immobilization of proteins.
Patent•
20 Apr 2018
TL;DR: In this article, the utility model relates to a from digital camera of taking a tripod, the structural tripod extending structure that is equipped with, the rocker passes throughthe connecting rod with first gear and is connected, the three gear revolve of first gear, and the camera adjust the height according to particular case.
Abstract: The utility model discloses a from digital camera of taking tripod, its structure includes that tripod extending structure, supporting leg structure, adjusting button, first fixed block, display screen, display screen accept board, cushion, revolve piece, second fixed block, camera lens fixed plate, upper cover, adjust knob, tripper, the sheath of shaking hands, buckle, connecting band, camera main frame, operating panel, camera mount, the utility model relates to a from digital camera of taking tripod, the structural tripod extending structure that is equipped with, the rocker passes throughthe connecting rod with first gear and is connected, thereby it makes first gear also and then rotate to rotate the rocker, related other the three gear revolve of first gear, thereby make the rotatory ascending or decline of telescopic link, thereby make the camera adjust the height according to particular case, and the gear drive structure is not fragile, use is very convenient, the phenomenon that the telescopic link card stubbornly refuses to move can not appear, and the gear drive structure can be used to the fine setting, the qualities of take picture are improved, it is more practical.
TL;DR: This robotic wrist can generate a continuous end-effector rotation in any configuration within its orientation workspace, which allows the manipulator to function as a machine tool head used for a drill point grinder.
TL;DR: In this paper, a new control algorithm has been developed for the advanced divertor configuration (snowflake and tripod) on HL-2M. The two X-points of the snowflake or tripod configuration can be independently controlled both at the radial and the vertical direction by this control algorithm.
01 Jan 2018
TL;DR: The pinnacle of 3D printing is its effect on the field of rapid prototyping, where designers can quickly materialize a part or object, which then could be tested in practice, and can be effortlessly modified if needed.
Abstract: The pinnacle of 3D printing is its effect on the field of rapid prototyping. The major advantage comes from the fact that designers can quickly materialize a part or object, which then could be tested in practice, and can be effortlessly modified if needed. This obviously cuts the development expenses and time by a significant percent. Moreover, it’s possible to create complex and precise shapes with the technology, which would take more time and would be resource intensive if done by older methods, for example manual or automatic machining.
Patent•
27 Nov 2018
TL;DR: The camera tripod for a smart phone as mentioned in this paper is an adjustable rubber grip that attaches a personal data device to a tripod without damaging or scratching the personal data devices, which can be attached to the tripod to charge the device while the device is in use.
Abstract: The camera tripod for a smart phone is an accessory for a personal data device. The camera tripod for a smart phone is an adjustable rubber grip that is designed attach a personal data device to a tripod without damaging or scratching the personal data device. The camera tripod for a smart phone further comprises a photoelectric cell bank and a cable that can be attached to the tripod to permit the personal data device to be charged while the personal data device is in use. The camera tripod for a smart phone comprises a plurality of grips, a base, and a threaded connector.
Patent•
03 Aug 2018
TL;DR: In this paper, the opening and telescopic operation of a triangulation tripod is described, and an adjusting method of the adjusting method is proposed to reduce the physical labor of the operator.
Abstract: The invention discloses a tripod supporting leg telescopic opening mechanism and an adjusting method thereof, and belongs to the field of tripods. The tripod supporting leg telescopic opening mechanism comprises a supporting column and three sets of supporting legs, the supporting column is of a hollow structure, a platform is arranged on the upper portion of the supporting column, a worm and gearmechanism and a hand wheel for driving a worm are arranged on the platform, a movable pulley traction mechanism is arranged in the supporting column, and drives a sliding sleeve hoop to move to control the three sets of supporting legs to be opened or shrink, structural design is simple, and operation is flexible and convenient; and each supporting leg comprises a fixed supporting leg pipe, a telescopic supporting leg pipe and a controllable gas spring, the controllable gas springs are used for controlling the telescopic lengths of the supporting legs, operation is easy, and the bearing capacity of the tripod is improved. According to the tripod supporting leg telescopic opening mechanism and the adjusting method thereof, the opening and telescopic operation of the tripod is very simple,an operator does not need to bow to carry out operation, and physical labor of the operator is reduced.
Patent•
11 Dec 2018
TL;DR: In this article, an intelligent tripod system for dynamic tracking and self-photographing is presented, comprising a tripod, a servocradle head and a miniature tracking camera, which can automatically track and photograph the character image according to the setting of the external remote control device.
Abstract: The invention discloses a tripod system for dynamically tracking self-timer. The tripod system for dynamic tracking and self-photographing comprises an intelligent tripod, comprising a tripod, a servocradle head and a miniature tracking camera. The servo cradle head is arranged on the upper end of the tripod, and further comprises an image tracking module, a first wireless network communication module, a positioning module and a servo motor driving system. The micro tracking camera is arranged on the servo cradle head and is connected with an image tracking module, and the positioning moduleis in control connection with a servo motor driving system. The hand-held remote controller comprises an operation button, an intelligent terminal and a second wireless network communication module. The positioning module calculates the miss distance information of the target image, generates an image tracking miss distance, and controls a servo motor driving system to adjust the micro tracking camera in real time. The tripod system can automatically track and photograph the character image according to the setting of the external remote control device, and obtain the best static and dynamic selfie picture.
TL;DR: A novel tripod boron dipyrromethene (BODIPY) dye bearing N-hydroxysuccinimide ester was synthesized through its carboxylic acid precursor, and the functionality was confirmed by its amidation reactivity.
Patent•
23 Apr 2018
TL;DR: In this article, a Tripod manipulator with a base, hinges, actuating links connected to each other by means of a five-movable spherical hinge and with a load-holding part is presented.
Abstract: FIELD: machine building.SUBSTANCE: invention relates to machine building, in particular, to robotics. Tripod manipulator contains a base, hinges, actuating links connected to each other by means of a five-movable spherical hinge and with a load-holding part. Actuating links are made in the form of linear drives, each of which is connected to each other and with a two-stage controlled gripper, which is presented in the form of two independent links successively connected to each other in the form of hemispheres and a load gripper. Links are interconnected by means of rotational cylindrical hinges with a fifth class kinematic pair, the two-stage controlled gripper links axes of symmetry are perpendicular to each other, and the five-moving spherical hinge axis of symmetry coincides with one of the axes of the two-stage controlled gripper, each link has a rigid coupling to the inching motor, the base is made in the form of an equilateral triangle, on which the technical vision sensors are mounted.EFFECT: enabling increase in the speed of the technological operation execution, increase in the functionalities, possibility of more precise positioning.1 cl, 2 dwg