摘要：Technique of target selection and profiles of transfer trajectory for Chinese asteroid exploring mission are studied systemically.A complete set of approaches to selecting mission targets and designing the transfer trajectory is ***,when selecting a target for mission,some factors regarded as the scientific motivations are ***,when analyzing the accessibility of targets,instead of the classical strategy,the multiple gravity-assist strategy is *** suitable and possible targets,taking into account scientific value and technically feasible,are obtained via selection and *** designing the transfer trajectory for exploring asteroid mission,an approach to selecting gravity-assist celestial body is ***,according to the mission constraints,the trajectory profile with 2-years △V-EGA for exploring asteroid is *** analyzing the trajectory profile,unexpected result that the trajectory would pass by two main-belts asteroids is ***,the original proposal is extended to the multiple flybys *** adds the scientific return for asteroid mission.

摘要：Literate individuals possess knowledge and skill and can apply these to perform tasks in novel settings. Knowledge is at the heart of physical literacy and provides the foundation for knowing what to do and how and when to perform. In this paper I argue that physical literacy includes not only knowledge for performance but also the ability to apply knowledge and use knowledge for innovation. Scholars since the 1930s have addressed the role of knowledge in physical literacy designing curricula centered on transmitting knowledge through a range of interdisciplinary approaches to physical education. This emphasis on physical literacy curricula continues today in the Science, PE, ＆ Me.t and The Science of Healthful Living interdisciplinary curricula.

摘要：Wireless power transfer via inductive link is becoming a popular choice as an alternate powering scheme for biomedical sensor electronics. Spiral printed circuit board (PCB) inductors are gaining attractions for wireless power transfer applications due to their various advantages over conventional inductors such as low-cost, batch fabrication, durability, manufacturability on flexible substrates, etc. In this work, design of a multi-spiral stacked solenoidal inductor for biomedical application in 13.56 MHz band is presented. Proposed stacking method enhances the inductance density of the inductor for a given area. This paper reports an optimization technique for design and implementation of the PCB inductors. The proposed scheme shows higher inductance and better figure-of-merit values compared to PCB inductors reported in literature, which are desirable for wireless power transfer system.

摘要：This paper is concerned with the optimal design of an obstacle located in the viscous and incompressible fluid which is driven by the steady-state Oseen equations with thermal effects. The structure of shape gradient of the cost functional is derived by applying the differentiability of a minimax formulation involving a Lagrange functional with a space parametrization technique. A gradient type algorithm is employed to the shape optimization problem. Numerical examples indicate that our theory is useful for practical purpose and the proposed algorithm is feasible.

摘要：Assisted reproductive technology methods i.e., IVF and ICSI were extensively used for treatment of infertility. Although, these methods have many advantages but ART pregnancy rate remains low (30% - 35%). It seems that uterine peristalsis occurred after rhCG administration in turn resulting to impair implantation of the transferred embryos. Therefore this study was conducted to possess of whether hyoscine bromide can effectively alleviate uterine contraction and then have any effect on the reproductive outcome. Healthy women who underwent IVF or ICSI cycles (n = 142) were randomly assigned to one of two groups at the start of the cycle. Group control (n = 71) without applied hyoscine and group experiment (n = 71) applied hyoscine (25 mg). Controlled ovarian hyperstimulation was induced with follicle stimulating hormone (FSH). Sperm preparation and ovarian puncture for in vitro maturation and fertilization (IVF) of oocyte were carried out for 42 hours after rhCG injection. Two weeks after rhCG injection, bhCG pregnancy test to determine pregnancy outcome in both groups was done and the outcome results, along with other information were recorded separately. The pregnancy rate in experimental group was significantly higher than that of control group. when all of the cycles with or without giving 25 mg of hyosine were stratified by the mean total follicles (more/less than 2 follicles) and embryos (more/less than25 kg/m2), the Patients’ age, the quality grade of embryos and infertility duration (more/less than 5 years), the reproductive outcome, in overall, in the subjects with more than 10 oocytes, 5 embryos, more than quality A and B grades of embryos, less than 35 years age and also less than 5 years infertility duration was more pronounced than the other patients. But the other parameter was not affected by the reproductive outcome. Clinical or statistical improvement of the reproductive outcome could be demonstrated in the hyosine treated group especially with incre

摘要：transfer theory holds that the differences between the mother tongue and target language have an impact on target lan-guage acquisition,pronunciation *** on the theory,this paper aims to discuss the negative transfer of Shandong dia-lect on English pronunciation and to put forward suggestions for improvement.

摘要：Micro electro mechanical systems are studied in this paper along to comparing the design, fabrication, and operation of such devices especially in the electronic industry. The advancements of such systems are important as scale reduction is becoming more economical and also in heat dissipation efficiencies. Furthermore, the fabrication techniques are becoming more of a challenge in today’s industrial market. In this paper we will introduce a comparative study of experimental research in the micro scale heat exchanger with varieties of industrial application primarily cooling integrated circuits. Significant effect in the process of cooling electronic devices has showed experimentally that scale variations impact into this improvement. Numerical studies have been a leading technique in the development of thermal systems especially at the micro or small scales which helps the industry to cut cost and provide innovative products at high efficiencies. There are so many approaches to numerical analysis and research, where the availability of ready to use software and data acquisition modules is variant. Material selection is also a variable in the efficiency and operations of these micro channel thermal system and heat exchangers.

摘要：Gas-involving electrochemical reactions,like oxygen reduction reaction (ORR),oxygen evolution reaction (OER),and hydrogen evolution reaction (HER),are critical processes for energy-saving,environment-friendly energy conversion and storage technologies which gain increasing *** development of according electrocatalysts is key to boost their electrocatalytic *** efforts have been put into the development of advanced electrocatalysts to overcome sluggish *** the other hand,the electrode interfaces-architecture construction plays an equally important role for practical applications because these imperative electrode reactions generally proceed at triple-phase interfaces of gas,liquid electrolyte,and solid electrocatalyst.A desirable architecture should facilitate the complicate reactions occur at the triple-phase interfaces,which including mass diffusion,surface reaction and electron *** this review,we will summarize some design principles and synthetic strategies for optimizing triple-phase interfaces of gas-involving electrocatalysis systematically,based on the electrode reaction process at the three-phase *** can be divided into three main optimization directions:exposure of active sites,promotion of mass diffusion and acceleration of electron ***,we especially highlight several remarkable works with comprehensive optimization about specific energy conversion devices,including metal-air batteries,fuel cells,and water-splitting devices are demonstrated with superb *** the last section,the perspectives and challenges in the future are proposed.

摘要：This tutorial review summarizes recent progress in the research field of controlled/"living" radical polymerization (CLRP) from Soochow *** present paper gives a broad overview of the mechanism study and molecular design in *** mechanism study in CLRP aided by microwave,initiated by γ-radiation at low temperature,mediated by iron,in reversible addition-fragmentation chain transfer (RAFT) polymerization and the mechanism transfer between different CLRP processes are reviewed and *** molecular design in CLRP,especially in RAFT polymerization for mechanism study,and in achieving tailor-made functional polymers is studied and discussed in the later part.

摘要：The study,using an interlanguage corpus,investigates how international students in China acquire“prepositional phrase-verb”word *** found that students whose mother tongue features VO and OV word order mostly produce pre-placement structure of“prepositional phrase+verb”,which is similar to Chinese word order and hence reflects an overt influence of the target ***,when producing post-placement structure of“verb+prepositional phrase”,VO type L1 speaking students slightly outnumber those OV type L1 speaking students,which indicates limited influence of L1 *** addition,other factors such as the relator principle and the temporal iconicity principle also exert certain influence on the word order acquisition of“prepositional phrase-verb”structure.