Inverse Edelstein Effect Observed in Rashba-split 2DEG at Complex Oxide Interfaces at Room Temperature

<正>To get efficient approaches to the spin-to-charge conversion is crucially important for spintronics which,as is widely believed,might lead to a new generation of information technology.Fortunately,V.M.Edelstein has proposed a new effect for twodimensional systems with Rashba spin-orbit coupling which relates spin current to charge current.According to his theory,charge current will generate a pure spin     

中国清风藤科的初步研究

 This paper is a preliminary study on the Sabiaceae in aspects of its morphology, taxonomy and geography.  We propose that the Sabioideae and Meliosmoideae as two new subfamilies of Sabiaceae according to the external morphology, flower structure and geographical distribution of these two genera respectively.       This paper follows the taxonomic concepts of Luetha Chen on Sabia and C. F. van Beusekom on Meliosma.  We agree with them for their classification of these two genera above the specific rank.  As to the revision work of Sabia by van de Water and C. F. van Beusekom’s work on Meliosma we disagree  for their unduly broad specific concepts.  We rather treat the species of these two genera according to their habitats in regions on a relatively narrower sense.  The genus Sabia of China are classified into 2 tribes, with 16 species, 5 subspecies and 2 varieties in which 4 sub- species and l variety are as new combinations, the genus of Meliosma in China are classified into 2 subgenera with 29 species, and 7 varieties of which 4 varieties are new combinations.       After examining the affinity of the species of Sabia and Meliosma in China and its neighboring nations such as Burma, Japan and Bhutan, we found that their migra- tion initiated from China, as the primitive species of these two genera occured in northeast and central part of Yunnan, sou theast of Sichuan, north of Guizhou and west of Hubei, the region may probably be the main origin of these two genera.      As shown in tables 1 & 2, the localities where the species of these two genera den- sely populate they are from Yunnan, Guangxi, and Guangdong coinciding with the concepts of C. F. van Beusekom and van de Water about the distribution of exotic species of these two genera, it may reasonable be pointed out that the center of distri- bution of these two genera is Yunnan, Guangxi, Guangdong and nieghboring nations, upper Burma and northern Vietnam.  Futhermore, it may be seen that starting from this center the number of species become less and less as they proceed far and far awaybut become more advance in evolution.     

Confirming of the Higgs Boson

<正>1.Significance of the search for the Higgs boson General relativity and the Standard Model are two major theories in modern physics.General relativity describes space,time and gravity,while the Standard Model is a theory concerning the electromagnetic,weak,and strong nuclear interactions.The Standard Model divides particles into the two categories of fermions(including quarks and leptons)and bosons(including gluons,photons,W and Z bosons and the Higgs boson)according to their spin.According to the Standard Model’s predictions,there are a total of 61 particles in these two categories[1].All the particles but the Higgs boson have been experimentally supported and validated.The Higgs particle is a boson with no spin or electric charge,it has mass     

Identification of twist-angle-dependent excitons in WS2/WSe2 heterobilayersOA

Stacking atomically thin films enables artificial construction of van der Waals heterostructures with exotic functionalities such as superconductivity, the quantum Hall effect, and engineered light-matter interactions.In particular, heterobilayers composed of monolayer transition metal dichalcogenides have attracted significant interest due to their controllable interlayer coupling and trapped valley excitons in moiré superlattices. However, the identification of twist-angle-modulated optical tr...     

New calculations indicate that 90% of flowering plant species are animal-pollinated

<正>The services of animal pollinators that deliver compatible pollen to receptive stigmas are essential for the reproduction of many flowering plants [1,2].The maintenance of plant-pollinator interactions,therefore,is the basis for the function and sustainability of healthy ecosystems.For this reason, there has been widespread concern over the past two decades about the global decline in pollinators and the effects of this loss on pollination services for both wild plants and crops [3,4].     

Material research from the viewpoint of functional motifsOA

As early as 2001,the need for the ’functional motif theory’ was pointed out,to assist the rational design of functional materials.The properties of materials are determined by their functional motifs and how they are arranged in the materials.Uncovering functional motifs and their arrangements is crucial in understanding the properties of materials and rationally designing new materials of desired properties.The functional motifs of materials are the critical microstructural units(e.g.constituen...     

First SPA-based Platform for High-throughput Drug Screening Established in China

China's first platform for high-throughput drug screeningbased on SPA (ScintillationProximity Assay) technology hasbeen put into practice at the NationalCenter for Drug Screening (NCDS).Experts say it will significantly en-hance the efficiency of new phar-maceutical development in China.An innovative approach for high-throughput screening introduced inthe 1990s, SPA allows rapid and sen-sitive detection of a wide variety ofmolecular interactions in a homoge-neous system. It is accurate …     

The Exotic Decays of Two New Nuclides Near the Proton Drip Line Observed

Two new nuclides near the proton drip line weresynthesized and their exotic decays studied byscientists with the Lanzhou Institute of Mod-ern Physics (LIMP), a CAS affiliate focusing on ba-sic research in heavy ion physics and its related inter-disciplinary sciences.The two new nuclides are 142Ho, a new protondrip-line nuclide and 149Yb, a new b-delayed protonprecursor in the heavy rare-earth region. And their ex-otic b-delayed proton decays have been observed(Fig.1). The synthesis of a …     

Observation of Magnon-Mediated Electric Current Drag at Room Temperature

正Spin-based electronic devices such as magnetic memory and spin logic rely on spin information transport.Generation,manipulation and detection of spin current are fundamental issues in spintronics research.In today’s spintronics,conduction electrons play the role of messengers.An interesting question is whether other     

Research Progress in Technology Development for 2008 Olympic Games

Co-sponsored by MOST, SSGA, CAS and Beijing S&T Commission, this project is car- ried out by the CAS Institute of Computing Technology. It focuses on the key technologies in digi- tal and 3-D computer simulation and the computer-aided software for the training of sport items such as diving and trampoline, so as to help athletes to improve their performance. It is expected to bring two transforma-tions to the athlete-training methods: one is to change the traditional practice of a coach…     

What are species and how are they formed?OA

<正>In this issue of NSR,four papers address various aspects of speciation.The fifth one,to appear in the next issue,is on biodiversity and should ultimately be about speciation as well.As has always been the case in speciation research,the conclusion depends on what’species’are.This is true for Wang et al.[1] on post-speciation gene flow,Ma et al.[2] on hybridization speciation,Sun et al.[3] on sympatric speciation and Fan et al.[4]on species diversity.The conclusions would all be quite di...     

Unraveling the electrophilic oxygen-mediated mechanism for alcohol electrooxidation on NiOOA

Aqueous organic electrosynthesis such as nucleophile oxidation reaction(NOR) is an economical and green approach.However,its development has been hindered by the inadequate understanding of the synergy between the electrochemical and non-electrochemical steps.In this study,we unravel the NOR me chanism for the primary alcohol/vicinal diol electro oxidation on NiO.Thereinto,the ele ctrochemical step is the generation of Ni³⁺-(OH)_ads,and the spontaneous reaction between Ni     

中国禾本科植物志资料之一，国产柳叶箬属的重订

This paper is here presented as a material for a flora of the Chinese grasses.  At the beginning, it chronologically gives a brief historical sketch on the study of the sub- tribe Isachninae.  The category which this group should constitute is here delimited, and its position in the natural system of grass-classification is also discussed.       Secondly it deals with a taxonomic treatment on the genus Isachne which comprises 16 species and 7 varieties in China, amongst which two species (I. hoi and I. hainanensis) and four varieties (I. albens var. glandulifera, I. truncata vars. crispa & maxima, and I. nipponensis var. kiangsiensis) are published here as new to science.  In addition, a new combination, I. hirsuta, (Hook. f.) Keng, f., based upon I. albens var. hirsuta Hook. f., is made here.  The two species (I. ciliatiflora Keng, and  I. tenuis  Keng)  published in Chinese only in the “Flora Illustralis Plantarum Primarum Sinicarum Graimeae 1959”, arehere supplemented with Latin diagnoses for validation.     

Deep brain-machine interfaces:sensing and modulating the human deep brainOA

Different from conventional brain-machine interfaces that focus more on decoding the cerebral cortex,deep brain-machine interfaces enable interactions between external machines and deep brain structures.They sense and modulate deep brain neural activities,aiming at function restoration,device control and therapeutic improvements.In this article,we provide an overview of multiple deep brain recording and stimulation techniques that can serve as deep brain-machine interfaces.We highlight two widel...     

Editors' selection of papers from China's academic journals

<正>PHYSICS Understanding Feshbach molecules using radio-frequency spectroscopy Ultracold Fermi gases provide versatile and lexible setings for molecular interactions and reaction dynamics in quantum regimes.Recently,Lianghui Huang and colleagues created weakly bound Feshbach molecules from the two spin components of40K atomic Fermi gas.hey then investigated the radiofrequency(RF)spectra of the weakly bound molecules and from that obtained the magnetic-ield-dependent binding     

CAS Furthers Cooperation with Developing Nations via TWAS Platform

With CAS President BAI Chunli’s taking office as the President of the academy of sciences for the developing world (TWAS) on January 1, 2013, CAS is planning a set of new drives to boost its collaboration with developing nations, which include the launch of     

垂盆草和狭叶垂盆草的比较研究

  The Chinese medicine “Chuipencao” is studied.  But, as a matter of fact, this Chinese name represents two distinct forms, one with broad leaves and the other with narrow leaves.  As a result of a comprehensive study on gross morphology, pollen mor- phology, histological structure, isozymes, GC analysis of chemical constituents of the plants in question has shown that the narrow-leafed form is different from the broad- leafed form and therefore is considered as a new species, Sedum angustifolium Z. B.Hu et X. L. Huang sp. nov.     

Changing Forestry Policy by Integrating Water Aspects into Forest/Vegetation Restoration in Dryland Areas in China

Restoration forestry (forest rehabilitation) or re-vegetation is one effective measure to solve environmental problems, notably soil erosion. It may be further stimulated by the Clean Development Mechanism for carbon sequestration. However, there is an intensive and on-going debate about the adverse effects arising from afforestation in dryland areas, such as soil drying up which may cause further damage to the success of forest restoration, and the water yield reduction from watershed which may harm the regional development. On other hand, some preliminary studies showed a possibility that these adverse effects may be diminished more or less by properly designing the system structure and spatial distribution of forest/vegetation in a watershed. However, it is urgent to develop an evidence-based and sustainable new forestry policy for harmonizing forest-water interrelation. As a leading country in afforestation, China is beginning to develop a more trans-disciplinary and cross-sectoral forestry policy for harmonizing forestry development with water management. The main points of the changing new forestry policy should include: (1) Establishing a regional development strategy focusing on harmonized forest-water relations; (2) Taking forest-water interactions as an important part of evaluation; (3) Reducing the ’eco-water’ quota of forests through technical advancement; (4) Developing and extending water-adaptive forest management practices; (5) Strengthening forest ecohydrological research and decision support ability.     

Advance Achieved for Global Secure Quantum Communication

In today’s Information Age, theprotection of information is ofcritical importance for nationalsecurity, business firms, and privateindividuals. The common long-dis-tance communication technology ispoor in keeping privacy as it is vul-nerable to eavesdropping. Quantumcryptography, a new approach tocommunication based on certainphenomena of quantum physics, isconsidered the absolute securemethod in this regard.Recently CAS scientists havemade progress in secure communi-cat i on based on q uan…