Fiber coupled high count-rate single-photon generated from InAs quantum dots

In this work,we achieve high count-rate single-photon output in single-mode(SM)optical fiber.Epitaxial and dilute InAs/GaAs quantum dots(QDs)are embedded in a GaAs/AlGaAs distributed Bragg reflector(DBR)with a micro-pillar cavity,so as to improve their light emission extraction in the vertical direction,thereby enhancing the optical SM fiber’s collection capabil-ity(numerical aperture:0.13).By tuning the temperature precisely to make the quantum dot exciton emission resonant to the micro-pillar cavity mode(Q~1800),we achieve a fiber-output single-photon count rate as high as 4.73×10^(6) counts per second,with the second-order auto-correlation g2(0)remaining at 0.08.

Community Authenticity Experience of Shared Accommodation Consumers

By constructing a research framework of theoretical concepts such as leisure involvement, authenticity experience, place attachment, and willingness to revisit, the aim is to explore the authenticity experience and its influencing mechanisms in shared accommodation consumption. Research data are collected by using questionnaire survey method, and statistical analysis of data is conducted using SPSS 21.0. Research has found that leisure involvement has a significant positive impact on authenticity experience, place attachment, and willingness to revisit;authenticity experience has a significant positive impact on place attachment and willingness to revisit;place attachment has a significant positive impact on willingness to revisit. Therefore, shared accommodation owners need to strengthen the editing and publishing of leisure strategies on we media to enhance customers sense of leisure involvement;pay attention to enhancing the local authentic cultural experience of tenants, in order to increase their sense of attachment to the place and thereby enhance their willingness to stay.

Potassium transporter OsHAK9 regulates seed germination under salt stress by preventing gibberellin degradation through mediating OsGA2ox7 in rice

Soil salinity has a major impact on rice seed germination,severely limiting rice production.Herein,a rice germination defective mutant under salt stress(gdss)was identified by using chemical mutagenesis.The GDSS gene was detected via MutMap and shown to encode potassium transporter OsHAK9.Phenotypic analysis of complementation and mutant lines demonstrated that OsHAK9 was an essential regulator responsible for seed germination under salt stress.OsHAK9 is highly expressed in germinating seed embryos.Ion contents and non-invasive micro-test technology results showed that OsHAK9 restricted K^(+)efflux in salt-exposed germinating seeds for the balance of K^(+)/Na^(+).Disruption of OsHAK9 significantly reduced gibberellin 4(GA4)levels,and the germination defective phenotype of oshak9a was partly rescued by exogenous GA_(3)treatment under salt stress.RNA sequencing(RNA-seq)and real-time quantitative polymerase chain reaction analysis demonstrated that the disruption of OsHAK9 improved the GA-deactivated gene OsGA2ox7 expression in germinating seeds under salt stress,and the expression of OsGA2ox7 was significantly inhibited by salt stress.Null mutants of OsGA2ox7 created using clustered,regularly interspaced,short palindromic repeat(CRISPR)/CRISPR-associated nuclease 9 approach displayed a dramatically increased seed germination ability under salt stress.Overall,our results highlight that OsHAK9 regulates seed germination performance under salt stress involving preventing GA degradation by mediating OsGA2ox7,which provides a novel clue about the relationship between GA and OsHAKs in rice.

A highly linear stretchable MXene-based biocompatible hydrogel-elastomer hybrid with tissue-level softness

Maintaining low modulus while endowing the wide-range linear stretchability to wearable or implantable devices is crucial for these devices to reduce the mechanical mismatch between the devices and human skin/tissue interfaces.However,improving linear stretchability often results in an increased modulus of stretchable electronic materials,which hinders their conformability in long-term quantifiable monitoring of organs.Herein,we develop a hybrid structure involving interlocking low-modulus porous elastomers(Ecoflex-0030)and MXene-based hydrogels with crosslinking networks of polyvinyl alcohol,sodium alginate,and MXene.This hydrogel–elastomer structure exhibits superior performance compared with previous reports,with a wide linear stretchability strain range from 0 to 1000%and maintaining a low modulus of 6.4 kPa.Moreover,the hydrogel–elastomer hybrids can be utilized as highly sensitive strain sensors with remarkable characteristics,including high sensitivity(gauge factor~3.52),a linear correlation between the resistance and strain(0–200%),rapid response(0.18 s)and recovery times(0.21 s),and excellent electrical reproducibility(1000 loading–unloading cycles).Those electrical and mechanical properties allow the sensor to act as a suitable quantifiable equipment in organ monitoring,human activities detecting,and human–machine interactions.

项目制提质增效促进企业绿色发展——以国药威奇达制药为例

企业高质量发展的具体目标肯定是多维度的,至少既要追求创造经济价值,又要实现绿色发展。本文探讨了如何通过管理会计制度创新来实现经济价值与绿色发展的双赢。本文提出,项目制提质增效具有多重制度内涵,也是实现经济效益和绿色发展“双赢”的创新措施。本文以国药集团威奇达药业有限公司(以下简称“国药威奇达”)为例,通过分析其成功开展兼顾绿色发展和经济效益双重目标要求的两个典型案例,深入探讨项目制提质增效如何双管齐下,助力企业降本增效与绿色发展。项目制不仅为其他企业管理创新、谋求可持续发展提供了可参考的路径,也为基于减碳的管理会计理论演进提供了新证据。

Modulating the photoelectrons of g-C3N4 via coupling MgTi2O5 as appropriate platform for visible-light-driven photocatalytic solar energy conversion

Graphitic carbon nitride (g-C3N4) has become an attractive visible-light-responsive photocatalyst because of its semiconductor polymer compositions and easy-modulated band structure. However, the bulk g-C3N4 photocatalyst has the low separation efficiency of photogenerated carriers and unsatisfied surface catalytic performance, which leads to poor photocatalytic performance. As for this, MgTi2O5 with high chemical stability, wide band gap and negative conduction band was used as a suitable platform for coupling with g-C3N4 to enhance charge separation and promoted the photoactivity. Different from common approaches, here, we propose an innovative method to construct g-C3N4/MgTi2O5 nanocomposites featuring “0 + 1 >1" magnification effect to improve g-C3N4 photocatalytic performance under visible light irradiation. Additionally, compositing metal oxides of MgTi2O5 with g-C3N4 has proven to be a proper strategy to accelerate surface catalytic reactions in g-C3N4, and the photoinduced carriers were modulated to maintain thermodynamic equilibrium, which convincingly promotes the photocatalytic activity. The photocatalytic performance of the nanocomposites was measured by hydrogen production and CO2 reduction under visible light. The developed g-C3N4/MgTi2O5 nanocomposites with a 5 wt.% MgTi2O5 exhibits the highest H2 and CO yield under visible light and excellent stability compare to the other MgTi2O5 contents in composites. According to surface photo-voltage spectra, electrochemical CO2 reduction, photoluminescence, etc. The superior performance can be related to an enhanced electron lifetime, the promoted charge transfer and the increased electronic separation property of g-C3N4. Our work provides an approach to overcome the defect of pure g-C3N4, which accesses to composite with the second component matched well.

Flag-transitive 2-(v,5,λ)designs with sporadic socle

We state that the flag-transitive automorphism group of a 2-(v,5,λ)design D is primitive of affine type or almost simple type.W e also find that there are up to isomorphism 202-(v,5,λ)designs admitting flag-transitive automorphism groups with socle of a sporadic simple group.

Targeting of TAMs:can we be more clever than cancer cells?

With increasing incidence and geography,cancer is one of the leading causes of death,reduced quality of life and disability worldwide.Principal progress in the development of new anticancer therapies,in improving the efficiency of immunotherapeutic tools,and in the personification of conventional therapies needs to consider cancer-specific and patient-specific programming of innate immunity.Intratumoral TAMs and their precursors,resident macrophages and monocytes,are principal regulators of tumor progression and therapy resistance.Our review summarizes the accumulated evidence for the subpopulations of TAMs and their increasing number of biomarkers,indicating their predictive value for the clinical parameters of carcinogenesis and therapy resistance,with a focus on solid cancers of non-infectious etiology.We present the state-of-the-art knowledge about the tumorsupporting functions of TAMs at all stages of tumor progression and highlight biomarkers,recently identified by single-cell and spatial analytical methods,that discriminate between tumor-promoting and tumor-inhibiting TAMs,where both subtypes express a combination of prototype M1 and M2 genes.Our review focuses on novel mechanisms involved in the crosstalk among epigenetic,signaling,transcriptional and metabolic pathways in TAMs.Particular attention has been given to the recently identified link between cancer cell metabolism and the epigenetic programming of TAMs by histone lactylation,which can be responsible for the unlimited protumoral programming of TAMs.Finally,we explain how TAMs interfere with currently used anticancer therapeutics and summarize the most advanced data from clinical trials,which we divide into four categories:inhibition of TAM survival and differentiation,inhibition of monocyte/TAM recruitment into tumors,functional reprogramming of TAMs,and genetic enhancement of macrophages.