作者: 精確 時(shí)間: 2025-3-21 21:02
Chunsheng Zhaoished and emerging topics in modern chemical research.Superv.The series?.Topics in Current Chemistry Collections.?presents critical reviews from the journal?.Topics in Current Chemistry.?organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces wit作者: deactivate 時(shí)間: 2025-3-22 01:21 作者: 支形吊燈 時(shí)間: 2025-3-22 08:16 作者: Generator 時(shí)間: 2025-3-22 09:15 作者: RLS898 時(shí)間: 2025-3-22 13:29 作者: 噴油井 時(shí)間: 2025-3-22 20:45 作者: chisel 時(shí)間: 2025-3-23 00:53
Chunsheng Zhaoed by cellular processes in its reduced form, i.e. as sulfide. Assimilatoy sulfate reduction by photoautotrophic plants therefore acts as the counterpart to oxidation and dissimilation, respectively, performed by microorganisms and animals (Schiff 1983). Up to 90% of the total sulphur is present in 作者: 戲服 時(shí)間: 2025-3-23 04:05
Chunsheng Zhaor the industrial state of a nation at the start of the 20th century. Less than 80 years later sulphur was stigmatised as the yellow poison after being identified as one of the major reasons for the acid rain problem. Later, after clean air acts came into force, severe sulphur deficiency became a maj作者: 陰謀 時(shí)間: 2025-3-23 08:32 作者: 過(guò)多 時(shí)間: 2025-3-23 10:59
Introduction,ies in the world strive to explore various new, small, and special motors such as electrostatic motors, ultrasonic motors (USMs), bionic motors, photo thermal motors, shape memory alloy motors, microwave motors, etc.作者: 徹底明白 時(shí)間: 2025-3-23 16:56
Ultrasonic Motor Using Longitudinal-Torsional Hybrid Vibration,review, LTUMs can be divided into two main types: the first is a multi-mode type, which has the longitudinal and torsional vibrators in the stator. The second one is a mode conversion type, in which only one longitudinal vibration mode is involved, and the torsional vibration can be induced by the l作者: nitroglycerin 時(shí)間: 2025-3-23 20:45 作者: 謙虛的人 時(shí)間: 2025-3-23 23:37 作者: Project 時(shí)間: 2025-3-24 06:10 作者: 兒童 時(shí)間: 2025-3-24 06:31
Chunsheng Zhaolevels due to diverse processes in the production (DDGS/sugar beet pulp/corn gluten feed) for example like the use of sulfuric acid or sulfur dioxide. Finally, it is recommended to test more frequently and systematically the sulfate content in grass and grass silages (indicating the S supply of plan作者: 天文臺(tái) 時(shí)間: 2025-3-24 13:43
Chunsheng Zhaoyotes and serves energy-yielding processes where sulfur compounds are donors or acceptors of electrons. Interest in the investigation of the multiple functions of sulfur-related processes has exponentially increased in recent years, especially in molecular and cellular biology, biochemistry, agrobio作者: confederacy 時(shí)間: 2025-3-24 17:12
Chunsheng Zhaoularly fitting that a meeting on the chemistry and biochemistry of sulfur should be held in Italy since Italian chemists have made major contributions to our under- standing of the organic chemistry of sulfur, including the chemistry of its reactive inter- mediates. The early Italian interest in sul作者: 翅膀拍動(dòng) 時(shí)間: 2025-3-24 22:15
Chunsheng Zhaoraction, but also markedly increased lime consumption (e.g. from 20 to 40 kg/t CaO on a flotation middling). Cyanide consumptions were in the range 3–7 kg/t NaCN..Roasting/sulphuric acid leaching/cyanidation, roasting/acid brine leaching/cyanidation, and roasting/sulphuric acid leaching/thiourea lea作者: encyclopedia 時(shí)間: 2025-3-25 00:54
Chunsheng Zhaorocess chemistry is discussed, indicating main chemical reactions, undesired parallel and consecutive reactions, exothermal heat effects and all other process chemistry data that are relevant for process selection and equipment design. The section about the actual process equipment from the various 作者: Ergots 時(shí)間: 2025-3-25 07:00
Chunsheng Zhaofunction of cofactors such as acetyl coenzyme A, thiamine, biotine, and lipoic acid. Accordingly, these sulphur compounds are essential in the diet of humans and monogastric mammals. The sulphur-containing tripeptide glutathione is involved in the regulation of protein synthesis (Kranner et al. 1996作者: Asymptomatic 時(shí)間: 2025-3-25 09:15 作者: Adenoma 時(shí)間: 2025-3-25 12:03 作者: 不愿 時(shí)間: 2025-3-25 17:01 作者: Callus 時(shí)間: 2025-3-25 22:53
https://doi.org/10.1007/978-3-642-15305-1Piezoelectric Effect; Piezomotor; SCIPRESS; Ultrasonic Motor; Ultrasonic Wave Motor; Vibration Mode作者: BLOT 時(shí)間: 2025-3-26 03:08 作者: RLS898 時(shí)間: 2025-3-26 04:18
Control Techniques for Ultrasonic Motors,US’s performance is influenced by many factors. Although USMs inherently possess excellent control performance, it needs appropriate control strategies to implement. Therefore, control techniques directly influence the implementation of US’s performance and furthermore will influence its applications and popularization[.].作者: DUST 時(shí)間: 2025-3-26 11:50 作者: 神秘 時(shí)間: 2025-3-26 16:04
Operating Mechanism and Modeling of Traveling Wave Rotary Ultrasonic Motor,energy transforming and its transmitting procedure, and the relationship between a standing wave and a traveling wave, which is very helpful to understand the motion mechanism of other types of ultrasonic motors.作者: MERIT 時(shí)間: 2025-3-26 18:35
Driving Techniques for Ultrasonic Motors,are relatively mature[.]. Provided no exception, this and the following chapter will take the traveling wave USMs as an example to expound the drive and control techniques, which will be references for other type of USMs.作者: hematuria 時(shí)間: 2025-3-26 22:00
plications.A comprehensive tutorial on ultrasonic motors for practicing engineers, researchers and graduate students. "Ultrasonic Motors: Technologies and Applications" describes the operating mechanism, electromechanical coupling models, optimization design of structural parameters, testing methods作者: 抵消 時(shí)間: 2025-3-27 04:02
Fundamentals of Tribology and Tribomaterials for Ultrasonic Motors,ve possesses features such as self lock without power and a high self lock torque. As far as the locking property of USM is concerned, the self lock torque is higher than its stall torque, while the rotor’s inertia is low. This indicates that the ultrasonic motor has rapid (millisecond scale) response property.作者: arrogant 時(shí)間: 2025-3-27 06:00
Design and Manufacture of Traveling Wave Rotary Ultrasonic Motors, takes a lot of time and resources, and design requirements are very difficult to be satisfied. Therefore, it is necessary to find out a general design method to optimize the performance of ultrasonic motors[.]–[.].作者: CANT 時(shí)間: 2025-3-27 11:47 作者: 聽(tīng)寫(xiě) 時(shí)間: 2025-3-27 17:09 作者: Hla461 時(shí)間: 2025-3-27 19:31
Linear Ultrasonic Motors,acteristics due to no movement errors from auxiliary parts, such as linkage, ball screw, transmission belt, etc; (d) a simple structure and the variability of shape, allowing easy miniaturization and weight loss.作者: 使混合 時(shí)間: 2025-3-28 00:59
Testing Techniques for Ultrasonic Motors,developed USMs suitable for vacuum environments and conducted many experimental studies, including mechanical characteristics, life testing, and vacuum thermal cycling experiments. At present, research institutes in China have also been carrying out some preliminary research on testing techniques for USMs[.]–[.].作者: Ventilator 時(shí)間: 2025-3-28 03:56 作者: Valves 時(shí)間: 2025-3-28 09:33 作者: FOLLY 時(shí)間: 2025-3-28 14:26
Introduction,rces, the motors have been widely used in many fields all over the world and have made a great contribution to our society. Over the years, the theories, design methods and manufacturing technologies of traditional motors have been developed so successfully that little improvement can be made to the作者: 外來(lái) 時(shí)間: 2025-3-28 17:09 作者: 一致性 時(shí)間: 2025-3-28 20:27 作者: 厭惡 時(shí)間: 2025-3-29 00:55
Fundamentals of Vibration for Ultrasonic Motors, is necessary to start with elastic body vibrations. Vibration is a classic topic in mechanical engineering and many references can be found [.]–[.]. In this chapter the vibration of elastic bodies is discussed. It provides the necessary theoretical foundation for the subsequent chapters of this boo作者: Sputum 時(shí)間: 2025-3-29 07:08
Operating Mechanism and Modeling of Traveling Wave Rotary Ultrasonic Motor,energy transforming and its transmitting procedure, and the relationship between a standing wave and a traveling wave, which is very helpful to understand the motion mechanism of other types of ultrasonic motors.作者: 擋泥板 時(shí)間: 2025-3-29 07:52
Design and Manufacture of Traveling Wave Rotary Ultrasonic Motors,ore attention[.]. In the early period, structure dimensions and materials were often designed based on experiences. Prototypes and corresponding experiments were carried out, with experimental results compared to the design requirements and adjustments made accordingly[.]. Usually, the whole process作者: 內(nèi)閣 時(shí)間: 2025-3-29 13:09
Bar-type Traveling Wave Rotary Ultrasonic Motors,grees of freedom(MDOF) ultrasonic motors. Both of them use the vibration of the bar-type round stator to achieve conversion from electrical energy to mechanical energy. This kind of structure makes the BTRUM possess a number of unique features, such as simplicity, cheapness, ease of processing, suit作者: 雄辯 時(shí)間: 2025-3-29 15:37
Ultrasonic Motor Using Longitudinal-Torsional Hybrid Vibration,ional vibrations are combined to generate the elliptic motions of points on a driving surface. The rotor is driven by the friction force between the stator and rotor. The tangential and axial direction vibrations of the point on the driving surface of LTUM can be excited by longitudinal and torsiona作者: 檔案 時(shí)間: 2025-3-29 22:09
Linear Ultrasonic Motors,rasonic vibration of an elastic body [.]. It transfers the micro amplitude motion of a stator into the macro linear motion of a slider by the friction force between the stator and slider. Besides the common characteristics of rotary ultrasonic motors, linear ultrasonic motors also possess the follow作者: 著名 時(shí)間: 2025-3-30 03:33
Step Ultrasonic Motors,self-correction USM[.], which made the USM succeed in step motion without feedback. Later, Miyazawa put forward a step USM[.]–[.] using a shifting standing wave mode based on Iijima’s standing wave USM in 1993. Furthermore, in 1999, the author and Guiqing Wang, et al. designed and fabricated a new s作者: fetter 時(shí)間: 2025-3-30 04:12
Other Ultrasonic Motors,re are many other new types being studied, including a non-contact type ultrasonic motor, a piezoelectric motor using clutch, a linear surface acoustic wave motor, a vacuum type ultrasonic motor, an impact type ultrasonic motor and so on. Since these types are still in the process of research and de作者: Anemia 時(shí)間: 2025-3-30 10:02 作者: 性上癮 時(shí)間: 2025-3-30 15:38 作者: 幸福愉悅感 時(shí)間: 2025-3-30 18:05 作者: 熱心助人 時(shí)間: 2025-3-30 23:15
Book 2011cations" describes the operating mechanism, electromechanical coupling models, optimization design of structural parameters, testing methods, and drive/control techniques of various ultrasonic motors and their applications..Dr. Chunsheng Zhao is a professor at Nanjing University of Aeronautics and A作者: 臥虎藏龍 時(shí)間: 2025-3-31 04:06 作者: 嘲弄 時(shí)間: 2025-3-31 07:50
Bar-type Traveling Wave Rotary Ultrasonic Motors,mechanical energy. This kind of structure makes the BTRUM possess a number of unique features, such as simplicity, cheapness, ease of processing, suitability for minitarization, etc. Therefore, it promises a vast potential market in micro air vehicles (MAV), micro-robotics, precision instruments, medical equipment, and other industrial areas.作者: Expertise 時(shí)間: 2025-3-31 12:42
Applications of Ultrasonic Motors in Engineering,asonic motors, and now there are many new entrants in the market, such as PI (Physik Instruments) L. P. in Germany, DTI, LLLP, and New Scale Technologies, Inc. in USA, Nanomotion Ltd. in Israel, PCBMotor ApS in Denmark, etc.作者: EWE 時(shí)間: 2025-3-31 16:59
