Tailoring electronic properties of two-dimensional antimonene with isoelectronic counterparts

Using ab initio density functional theory calculations, we explore the three most stable structural phases, namely, α,β, and cubic(c) phases, of two-dimensional(2D) antimonene, as well as its isoelectronic counterparts SnTe and InI. We find that the band gap increases monotonically from Sb to SnTe to InI along with an increase in ionicity, independent of the structural phases. The band gaps of this material family cover the entire visible-light energy spectrum, ranging from 0.26 eV to 3.37 eV, rendering them promising candidates for optoelectronic applications. Meanwhile, band-edge positions of these materials are explored and all three types of band alignments can be achieved through properly combining antimonene with its isoelectronic counterparts to form heterostructures. The richness in electronic properties for this isoelectronic material family sheds light on possibilities to tailor the fundamental band gap of antimonene via lateral alloying or forming vertical heterostructures.

The National Library of China Matching with Local Counterparts to Create Cultural Creative Products

In recent years, with museums popularized by various cultural creative products, libraries are unwilling to lag behind. Recently, the National Library Cultural and Creative Artwork Store was officially opened. Meanwhile, the Flagship Store of the National Library Cultural and Creative Union was launched on Tmall. Led by the National Library of China, 116 libraries across the country have "joined hands" to set up online shops, so as to jointly develop cultural creative products.

Local Enterprise Seek Common Benefit with Overseas Counterparts

On July 20th, a signing ceremony between Setcore Group, Egypt represented by Mr. Tamer Nassar-Chairman of Group and the World Trade & Commerce Center, Dongyang-China represented by Mr. Jiang Yuejin-Mayor of Dongyang City was held at the Marriott Hotel in Zamalek-Cairo. This was win-win cooperation and exerted great significances on both sides. In this event, they exchange ideas on the economic issues of common concerned and signed a memorandum of understanding as well.

A STAFF DEVELOPMENT PROGRAMME FOR BRITISH COUNCIL ELT PROJECT COUNTERPARTS

In British Council-managed ELT projects in Chinese universities,Chinese project counterparts areselected from among the English-language teaching staff of the University.They work alongside aBritish Council-recruited lecturer(BCL)in developing whatever it is the project has been set up tocreate:a syllabus,teaching materials,a course,etc.During the lifetime of the project eachcounterpart is sent for a year’s postgraduate training(typically an MA in applied Linguistics)at aBritish university,the rationale being that the combination of training on the job and in the UK willequip them to take over the running of the project and ensure its long-term sustainability.This paperlooks at the staff development of the counterparts prior to their UK training.

The possible electromagnetic counterparts of the first high-probability NSBH merger LIGO/Virgo S190814bv

LIGO/Virgo S190814 bv is the first high-probability neutron star–black hole(NSBH)merger candidate,whose gravitational waves(GWs)triggered LIGO/Virgo detectors at21:10:39.012957 UT,14 August 2019.It has a probability>99%of being an NSBH merger,with a low false alarm rate(FAR)of one per 1.559 e+25 years.For an NSBH merger,electromagnetic counterparts(especially short gamma-ray bursts(GRBs))are generally expected.However,no electromagnetic counterpart has been found in the extensive follow-up observing campaign.In the present work,we propose a novel explanation for this null result.In our scenario,LIGO/Virgo S190814 bv is just a GW mirror image of the real NSBH merger which should have been detected before 14 September 2015,but at that time we had no ability to detect its GW signals.The electromagnetic counterparts associated with the real NSBH merger should be found in the archive data before 14 September 2015.In this work,we indeed find nine short GRBs that are possibly electromagnetic counterparts.

Purification and Properties of a New L-Sorbose Dehydrogenase Accelerative Protein from Bacillus megaterium Bred by Ion-Beam Implantation

Bacillus megaterium BM302 bred by ion-beam implantation produces L-sorbose dehydrogenase accelerative protein （SAP） to accelerate the activity of L-sorbose dehydrogenase （SDH） of Gluconobacter oxydans in the 2-keto-L-gulonic acid （2KLG） fermentation from L-sorbose by the mixed culture of B. megaterium BM302 and G. oxydans. The SAP purified by three chromatographic steps gave 35-fold purification with a yield of 13% and a specific activity of 5.21 units/mg protein. The molecular weight of the purified SAP was about 58 kDa. The SDH accelerative activity of SAP at pH 7 and 50℃ was the highest. Additionally, it retained 60% activity at a pH range of 6.5 ～ 10 and was stable at 20℃ ～ 60℃. After 0.32-unit SAP was added to the single cultured G. oxydans strains, the SDH activity was apparently accelerated and the 2KLG yield of GO29, GO112, GO and GI13 was enhanced 2.1, 3.3, 3.5 and 2.9 folds respectively over that of the strains without the addition of SAP.

“Scrambling”: Logic of horizontal competition between local governments based on three cases of interprovincial disaster counterpart support

Interprovincial counterpart support is a cooperative system used by local governments to achieve horizontal flow of resources based on cross-regional cooperation.Existing research has mainly focused on governance ef‐ficiency,institutional advantages,and ranking incentives while ignoring the scrambling behavior and opera‐tional mechanisms of local governments formed by ranking incentives and territorial responsibilities.This study selected the Wenchuan earthquake,Yushu earthquake,and COVID-19 as three typical cases.We con‐structed a theoretical framework for competition among provincial local governments and found that competi‐tion in interprovincial disaster counterpart support followed a dual behavioral logic of“striving to be first”and“fear of being last”.Specifically,local governments will choose striving to be first under the logic of time coercion,content games,and territorial responsibility;they will choose fear of being last under the logic of re‐sponsibility avoidance and moral pressure.This type of scrambling-based horizontal competition reflects the logic of local government competition tournaments.This study further revealed the specific processes,mecha‐nisms,and results of horizontal local government competition,which can provide inspiration for cross regional and provincial cooperation.

CLINICAL STUDY OF LOW VISION PART Ⅰ: REFRACTION AND THE AIDED DISTANCE VISION

Eighty three cases of low vision patients (144 eyes) were examined with distant visual aids. The average visual acuity of the 144 eyes before refraction was approximately 0.07, while the counterpart afterwards was about 0.1 (p【0.01), With the 4x monocular focusable aid, acuity improved in 142 eyes out of the 144 eyes. The combined use of clip-on distance aid and the spectacle reading aid was observed to be especially suitable for partially sighted students.The mean MEF of 142 eyes was 0.9435±0.2068. The paired T-test between the difference of actual magnification and theoretical magnification was not significant at the 5% level. The factors contributing to the variance of MEF were discussed.

Product of the Schistosoma mansoni Glutathione Peroxidase Gene is a Selenium ContainingPhospholipid Hydroperoxide Glutathione Peroxidase (PHGPx) Sharing MolecularWeight and Substrate Specificity WithIts Mammalian Counterpart

In the blood fluke Schistosoma mansoni a functionally active, monomeric, phospholipid hydroperoxide glutathione peroxidase (PHGPx) has been purified and characterized. This enzyme contains a catalytically active selenocysteine. The protein has been shown to be the product of a cloned gene, previously referred to as a glutathione peroxidase gene. S. mansoni PHGPx has been found 5 times more abundant in female than in male worm extract. As in vertebrate PHGPx, homology alignment indicates that the residues involved in the glutathione binding by the tetrameric cellular glutathione peroxidase are mutated in the S. mansoni enzyme. Thus, this aspect appears a landmark of the PHGPx-type of glutathione peroxidases,which might be of functional relevance

A Study on the Cultivation Path of English Learning Initiative Ability of Xinjiang Students

The“counterpart aid to Xinjiang”is one of the important measures to implement the country’s western development strategy.It aims to shorten the gap between higher education in Xinjiang and the eastern region and to maintain the coordinated development of education,economy and society in the eastern and western regions.This article takes the counterpart support of Xinjiang students from the School of Foreign Languages of Jilin Engineering Normal University as an example to explore the problem of the initiative training of Xinjiang students in English learning in our school,mainly from the aspects of the students themselves,the teachers and the entire education and training environment of our school.The angle explains how to help them improve their learning initiative.This article is divided into three parts.The first is the analysis of the connotation of learning initiative;the second is its meaning;the last is how to build the learning initiative of Xinjiang students.

Correctly Addressing Your Chinese Counterpart

People doing business in China should try to know how to address their Chinese counter-parts, especially in formal settings so as to better engage with them. Different cultures mean people are addressed differently.

米罗:贵霜钱币所见的密特拉

密特拉神(Mithra)是古代雅利安(Indo-Aryan)宗教史上比较重要的神祇,其跨越不同时空,影响深远。该神名最早见于米旦尼(Mitanni)与赫梯(Hittie)国王Suppiluliunas所订立的盟约,该盟约提到了五位神,分别是密特拉(Mitra)、伐罗拿(Vanina)、因陀罗(Indra)与双子神(Nāsatyas)。米旦尼王国在今叙利亚北部,由胡里特人(Hunian)建立,他们原是印度一伊朗语民族(Indo-Iranian)中的一支,公元前两千年左右由中亚北部南下到达伊朗高原。

Self-lubrication of tribologically-induced oxidation during dry reciprocating sliding of aged Ti–Ni51.5 at% alloy

The tribological behaviors of Ti–Ni51.5 at%alloy strengthened by finely dispersed Ni_(4)Ti_(3) particles in reciprocating sliding against GCr15,Al_(2)O_(3),and ZrO_(2) at room temperature were studied.Interestingly,the coefficient of friction(COF)suffered a sheer drop(from 0.9 to 0.2)when the aged alloy slid against GCr15 at a frequency of 20 Hz under a 20 N load without lubrication.However,severe‐mild wear transition disappeared when a solutionized alloy was used.Moreover,the COF stabilized at a relatively high level when Al_(2)O_(3) and ZrO_(2) were used as counterparts,although their wear mechanisms showed signs of oxidation.Scanning electron microscopy(SEM)and X‐ray element mappings of the wear scars of the counterparts clearly indicate that the formation of well‐distributed tribo‐layer and material transfer between the ball and disk are pivotal to the severe‐to‐mild wear transition in the aged Ti–Ni51.5 at%alloy/GCr15 friction pair.The higher microhardness and superelasticity of the aged alloy significantly accelerate the material transfer from GCr15 to the disk,forming a glazed protective tribo‐layer containing Fe‐rich oxides.

World History Studies Guidelines for Contributors and Readers

World History Studies(WHS)is sponsored by the Institute of World History,Chinese Academy of Social Sciences in cooperation with the Social Sciences Academic Press.The journal is biannual and will be globally circulated.WHS encourages academic innovation and publishes articles and reviews reflecting the latest achievements of domestic and foreign historical scholarship.It is designed to build a new platform for academic exchanges between Chinese historians and their international counterparts.

Direct conversion of perovskite thin films into nanowires with kinetic control for flexible optoelectronic devices

With the support by the National Natural Science Foundation of China,the State Key Program for Basic Research of China,and the Natural Science Foundation of Jiangsu Province,the research team led by Prof.Zhu Jia(朱嘉)at the National Laboratory of Solid State Microstructures,College of Engineering and Ap-

HADRONIC MOMENTUM-MULTIPLICITY CORRELATION IN QUANTUM FIELD THEORY AT SHORT DISTANCE

In recent years the experiments of CERN-UA5 and NA22 Collaboration find that rapidity η-multiplicity N correlation is a visual scaling (s1/2=22—900 G-eV) and ηcut-N correlations are very complicated. These correlations may be helpful for building multihadron dynamics. We shall compare these data with the theory of quantum field at short

Genomic variations in the counterpart normal controls of lung squamous cell carcinomas

Lung squamous cell carcinoma （LUSC） causes approximately 400 000 deaths each year worldwide. The occurrence of LUSC is attributed to exposure to cigarette smoke, which induces the development of numerous genomic abnormalities. However, few studies have investigated the genomic variations that occur only in normal tissues that have been similarly exposed to tobacco smoke as tumor tissues. In this study, we sequenced the whole genomes of three normal lung tissue samples and their paired adjacent squamous cell carcinomas. We then called genomic variations specific to the normal lung tissues through filtering the genomic sequence of the normal lung tissues against that of the paired tumors, the reference human genome, the dbSNP138 common germline variants, and the variations derived from sequencing artifacts. To expand these observations, the whole exome sequences of 478 counterpart normal controls （CNCs） and paired LUSCs of The Cancer Genome Atlas （TCGA） dataset were analyzed. Sixteen genomic variations were called in the three normal lung tissues. These variations were confirmed by Sanger capillary sequencing. A mean of 0.5661 exonic variations/Mb and 7.7887 altered genes per sample were identified in the CNC genome sequences of TCGA. In these CNCs, C：G→T：A transitions, which are the genomic signatures of tobacco carcinogen N-methyl-N-nitro-N-nitrosoguanidine, were the predominant nucleotide changes. Twenty five genes in CNCs had a variation rate that exceeded 2%, including ARSD （18.62%）, MUC4 （8.79%）, and RBMX（7.11%）. CNC variations in CTAGE5 and USP17L7were associated with the poor prognosis of patients with LUSC. Our results uncovered previously unreported genomic variations in CNCs, rather than LUSCs, that may be involved in the develooment of LUSC.

Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network

LISA and Taiji are expected to form a space-based gravitational-wave(GW)detection network in the future.In this work,we make a forecast for the cosmological parameter estimation with the standard siren observation from the LISA-Taiji network.We simulate the standard siren data based on a scenario with configuration angle of 40°between LISA and Taiji.Three models for the population of massive black hole binary(MBHB),i.e.,popⅢ,Q3d,and Q3nod,are considered to predict the events of MBHB mergers.We find that,based on the LISA-Taiji network,the number of electromagnetic(EM)counterparts detected is almost doubled compared with the case of single Taiji mission.Therefore,the LISA-Taiji network’s standard siren observation could provide much tighter constraints on cosmological parameters.For example,solely using the standard sirens from the LISA-Taiji network,the constraint precision of H;could reach 1.3%.Moreover,combined with the CMB data,the GW-EM observation based on the LISA-Taiji network could also tightly constrain the equation of state of dark energy,e.g.,the constraint precision of w reaches about 4%,which is comparable with the result of CMB+BAO+SN.It is concluded that the GW standard sirens from the LISA-Taiji network will become a useful cosmological probe in understanding the nature of dark energy in the future.

IMMUNOHISTOCHEMICAL LOCALIZATION OF LH-RH IN HUMAN TROPHOBLAST

The blastocyst of mammalian species and the placenta of human being are known to produce a variety of hormones, including both sex steroids and gonadotropic peptides. The human chorionic gonadotropin, hCG, has been detected in pregnant woman’s serum as early as day 7 of gestation. Since the synthesis and the release of the pituitary gonadotropins are directly regulated by the luteinizing releasing hormone (LHRH) of the hypothalamus, it would be of great interest to see if its counterpart is