智能时代人工智能何以助力教师队伍建设

人工智能教育应用为深化教师队伍建设提供新的方法手段。针对如何应用人工智能助力教师队伍建设问题,采用内容分析法对国内122篇CSSCI期刊文献进行分析。研究发现,人工智能对于教师队伍建设的赋能价值不断得到认可,当前该领域的研究主要集中在人工智能时代人类教师职业身份反思、人工智能促进教师专业特质重构探讨、人工智能赋能教师专业成长机制探究、人工智能助力课堂教学变革探索等方面。但研究议题尚未响应国家建设高质量教师队伍、构建高质量教育支撑体系的战略部署;研究视角局限于教育学领域;研究方法以理论思辨为主,缺乏实证分析。人工智能对教师队伍建设与课堂教学改革价值没有充分体现,缺乏可供借鉴的经验做法。结合当前研究与实践现状、教育改革与教师队伍建设最新动向以及人工智能的未来发展趋势,以高质量发展目标为引领,以人类发展生态学理论为指导,从研究重心、研究视角、研究范式等方面对该领域后续研究进行展望,提出人工智能时代高质量、生态化与证据导向的教师队伍建设研究价值取向。

CIB1 as a Potential Diagnosis and Prognosis Biomarker in Uveal Melanoma

Background: Uveal melanoma (UVM) is the most common primary intraocular tumor in adults. However, identification of the effective biomarker for the diagnosis and treatment of UVM remains to be explored. Calcium and integrin-binding protein 1 (CIB1) is emerging as an important factor in tumor progression. Purpose: To determine the contribution of CIB1 in the diagnosis of UVM. Method: Immunohistochemical staining is used to detect the CIB1 expression level, while Gene Expression Profiling Interactive Analysis 2 (GEPIA2) and UALCAN online tools were used to analyze patient survival and CIB1 correlation genes in UVM. Integrative analysis using STRING and GeneMANIA predicted the correlated genes with CIB1 in UVM. Results: CIB1 expression level in UVM was significantly enhanced when compared with that in paracancerous tissues. A higher CIB1 expression level resulted in a significantly worse disease-free survival as well as overall survival. Moreover, the survival probability of patients was associated with body weight and gender of the patients with UVM. The correlated genes with CIB1 in UVM, and the similarity of the genes in UVM expression and survival heatmap were verified. Furthermore, Gene ontology enrichment analysis revealed that CIB1 and its correlated genes are significantly enriched in ITGA2B-ITGB3-CIB1 complex, regulation of intracellular protein transport and regulation of ion transport. Conclusions: Our novel findings suggested that CIB1 might be a potential diagnostic predictor for UVM, and might contribute to the potential strategy for UVM treatment by targeting CIB1.

乳腺钼靶X线与彩超联合检查对于乳腺导管内癌的诊断价值

目的分析乳腺导管内癌(DCIS)的钼靶X线与彩色多普勒超声特征,并探讨乳腺钼靶X线与彩超联合检查对于DCIS的诊断价值。方法选取2014年1月-2016年4月我院收治的经病理证实的63例DCIS患者作为研究对象,对所有患者的乳腺钼靶X线与彩色多普勒超声影像学资料进行回顾性分析。结果 63例乳腺导管内癌患者双乳共检出并经病理检查确诊有84个病灶,其中导管内癌63个,良性肿瘤21个。乳腺钼靶+彩超诊断的敏感性、阴性预测值分别为93.65%、83.33%,均显著高于乳腺钼靶、彩超单独诊断(P<0.05);乳腺钼靶+彩超诊断的特异性为95.24%,显著高于乳腺钼靶(P<0.05)。乳腺钼靶检查时回声/密度不均匀、边界模糊检出率分别为79.37%、60.00%,均显著低于彩超(P<0.05);乳腺钼靶检查时微小钙化检出率为76.09%,显著高于彩超(P<0.05)。结论乳腺钼靶X线与彩超联合检查能有效提高DCIS诊断的准确性,具有较高的应用价值。

Progress and perspective of high-voltage lithium cobalt oxide in lithium-ion batteries

Lithium cobalt oxide(LiCoO_(2),LCO)dominates in 3C(computer,communication,and consumer)electronics-based batteries with the merits of extraordinary volumetric and gravimetric energy density,high-voltage plateau,and facile synthesis.Currently,the demand for lightweight and longer standby smart portable electronic products drives the development of the upper cut-off voltage of LCO-based batteries to further improve the energy density.However,several challenges,including irreversible structural transformation,surface degradation,cobalt dissolution and oxygen evolution along with detrimental side reactions with the electrolyte remain with charging to a high cut-off voltage(>4.2 V vs.Li/Li+),resulting in rapid capacity decay and safety issues.Based on the degradation mechanisms and latest advances of the high-voltage LCO,this review summarizes modification strategies in view of the LCO structure,artificial interface design and electrolytes optimization.Meanwhile,many advanced characterization and monitoring techniques utilized to clarify the structural and interfacial evolution of LCO during charge/discharge process are critically emphasized.Moreover,the perspectives in terms of integrating multiple modification strategies,applying gel and solid-state electrolytes,optimizing the recovery process and scalable production are presented.

Progress in electrolytes for rechargeable Li-based batteries and beyond

Owing to almost unmatched volumetric energy density, Li-based batteries have dominated the portable electronic industry for the past 20 years. Not only will that continue, but they are also now powering plug-in hybrid electric vehicles and zero-emission vehicles. There is impressive progress in the exploration of electrode materials for lithium-based batteries because the electrodes(mainly the cathode) are the limiting factors in terms of overall capacity inside a battery. However, more and more interests have been focused on the electrolytes, which determines the current(power) density, the time stability, the reliability of a battery and the formation of solid electrolyte interface. This review will introduce five types of electrolytes for room temperature Li-based batteries including 1) non-aqueous electrolytes, 2) aqueous solutions, 3)ionic liquids, 4) polymer electrolytes, and 5) hybrid electrolytes. Besides, electrolytes beyond lithium-based systems such as sodium-, magnesium-, calcium-, zinc-and aluminum-based batteries will also be briefly discussed.

Ultrafast battery heat dissipation enabled by highly ordered and interconnected hexagonal boron nitride thermal conductive composites

Heat dissipation involved safety issues are crucial for industrial applications of the high-energy density battery and fast charging technology.While traditional air or liquid cooling methods suffering from space limitation and possible leakage of electricity during charge process,emerging phase change materials as solid cooling media are of growing interest.Among them,paraffin wax(PW)with large latent heat capacity and low cost is desirable for heat dissipation and thermal management which mainly hindered by their relatively low thermal conductivity and susceptibility to leakage.Here,highly ordered and interconnected hexagonal boron nitride(h-BN)networks were established via ice template method and introduced into PW to enhance the thermal conductivity.The composite with 20 wt%loading amount of h-BN can guarantee a highly ordered network and exhibited high thermal conductivity(1.86 W m^(-1) K^(-1))which was 4 times larger compared with that of random dispersed h-BN involved PW and nearly 8 times larger compared with that of bare PW.The optimal thermal conductive composites demonstrated ultrafast heat dissipation as well as leakage resistance for lithium-ion batteries(LIBs),heat generated by LIBs can be effectively transferred under the working state and the surface temperature kept 6.9℃ lower at most under 2–5℃ continuous charge-discharge process compared with that of bare one which illustrated great potential for industrial thermal management.

Machine learning of materials design and state prediction for lithium ion batteries

With the widespread use of lithium ion batteries in portable electronics and electric vehicles,further improvements in the performance of lithium ion battery materials and accurate prediction of battery state are of increasing interest to battery researchers.Machine learning,one of the core technologies of artificial intelligence,is rapidly changing many fields with its ability to learn from historical data and solve complex tasks,and it has emerged as a new technique for solving current research problems in the field of lithium ion batteries.This review begins with the introduction of the conceptual framework of machine learning and the general process of its application,then reviews some of the progress made by machine learning in both improving battery materials design and accurate prediction of battery state,and finally points out the current application problems of machine learning and future research directions.It is believed that the use of machine learning will further promote the large-scale application and improvement of lithium-ion batteries.

Present Situation of Dictyophora Industry in China and Cultivation Technique of Dictyophora rubrovolvata

China is the earliest country to eat Dictyophora and to realize its artificial domestication.At present,12 species of Dictyophora have been reported worldwide,7 species of which are found in China.D.rubrovolvata,D.echinovolvata and D.indusiata have been cultivated on a large scale,and the main producing areas are Zhijin in Guizhou Province,Shunchang and Jiangle in Fujian Province,and Qingchuan and Changning in Sichuan Province.The cultivation of D.rubrovolvata had experienced 4 stages:wild tending,casserole cultivation,outdoor simple greenhouse cultivation and rapid development of new cultivation techniques.The present integrated cultivation technique of bag removing and soil covering of D.rubrovolvata were introduced in detail from the aspects of production and selection of high-quality fungi bags,bag removing and soil covering,spawn running,as well as fruiting management and harvesting.As one of the"ten main promoting technologies"of Guizhou Province in 2022,it had realized rapid propagation of liquid strains and supporting cultivation of improved varieties and methods.The suitable strains were selected to support understory cultivation,layer cultivation,basket cultivation,factory cultivation and other modes,which had short cultivation period and can realize annual production and supply.With the development of the industry,it is expected that low-cost secondary fermentation or tertiary fermentation cultivation technology will be more widely used.

Li-O_2 batteries

Science 2015,350,530-533Rechargeable lithium-air（Li-O2）batteries have received considerable attentions due to their much higher theoretical energy densities than today’s lithium-ion batteries.However,they still suffer from at least four limitations:（1）much lower capacity than theoretical capacity,stemming from the small pore sizes and volumes of the current porous electrode;（2）side reactions,including electrode materials,electrolyte,intermediate and final discharge products;（3）large

Clinical evidence of an interferon-glucocorticoid therapeutic synergy in COVID-19

Synthetic glucocorticoid dexamethasone is the first trial-proven drug that reduces COVID-19 mortality by suppressing immune system.In contrast,interferons are a crucial component of host antiviral immunity and can be directly suppressed by glucocorticoids.To investigate whether therapeutic interferons can compensate glucocorticoids-induced loss of antiviral immunity,we retrospectively analyzed a cohort of 387 PCR-confirmed COVID-19 patients with quasi-random exposure to interferons and conditional exposure to glucocorticoids.Among patients receiving glucocorticoids,early interferon therapy was associated with earlier hospital discharge(adjusted HR 1.68,95%Cl 1.19-2.37)and symptom relief(adjusted HR 1.48;95%Cl 1.06-2.08),while these associations were insignificant among glucocorticoids nonusers.Early interferon therapy was also associated with lower prevalence of prolonged viral shedding(adjusted OR 0.24,95%Cl 0.10-0.57)only among glucocorticoids users.Additionally,these associations were glucocorticoid cumulative dose-and timing-dependent.These findings reveal potential therapeutic synergy between interferons and glucocorticoids in COVID-19 that warrants further investigation.

Issues and strategies of cathode materials for mild aqueous static zinc-ion batteries

Researchers prefer mild aqueous static zinc-ion batteries(ASZIBs)for their distinct benefits of excellent safety,abundant zinc resources,low cost,and high energy density.However,at the moment there are some issues with the cathode materials of mild ASZIBs,including dissolution,by-products,poor conductivity,and a contentious energy storage system.Consequently,there are numerous difficulties in the development of high-performance mild ASZIBs cathode materials.This overview examines the mechanisms for storing energy and the de-velopments in inorganic,organic,and other novel cathode materials that have emerged in recent years.At the same time,three solutions—structural engineering,interface engineering,and reaction pathway engineering—as well as the difficulties now faced by the cathode materials of mild ASZIBs are forcefully introduced.Finally,a prospect is made regarding the evolution of cathode materials in the future.

Recent advances in hybrid water electrolysis for energy-saving hydrogen production

Electricity-driven water splitting to convert water into hydrogen(H_(2)has been widely regarded as an efficient approach for H_(2)production.Nevertheless,the energy conversion efficiency of it is greatly limited due to the disadvantage of the sluggish kinetic of oxidation evolution reaction(OER).To effectively address the issue,a novel concept of hybrid water electrolysis has been developed for energy–saving H_(2)production.This strategy aims to replace the sluggish kinetics of OER by utilizing thermodynamically favorable organics oxidation reaction to replace OER.Herein,recent advances in such water splitting system for boosting H_(2)evolution under low cell voltage are systematically summarized.Some notable progress of different organics oxidation reactions coupled with hydrogen evolution reaction(HER)are discussed in detail.To facilitate the development of hybrid water electrolysis,the major challenges and perspectives are also proposed.

Realizing high-performance all-solid-state batteries with sulfide solid electrolyte and silicon anode:A review

Sulfide solid electrolyte(SE)is one of the most promising technologies for all-solid-state batteries(ASSBs)because of its high ionic conductivity and ductile mechanical properties.In order to further improve the energy density of sulfide-based ASSBs and promote practical applications,silicon anodes with ultrahigh theoretical capacity(4,200 mAh·g^(−1))and rich resource abundance have broad commercial prospects.However,significant challenges including bulk instability of sulfide SEs and poor utilization of silicon materials have severely impeded the ASSBs from becoming viable.In this review,we first introduce the critical bulk properties of sulfide SEs and the most recent improving strategies covering the ionic conductivity,air stability,electrochemical window,mechanical stability,thermostability and solvent stability.Next,we introduce the main factors affecting the compatibility of silicon and sulfide SE,including the carbon’s effect,particle size of silicon,external pressure,silicon composite matrix and the depth of silicon’s lithiation.Finally,we discuss possible research directions in the future.We hope that this review can provide a comprehensive picture of the role of nanoscale approaches in recent advances in ASSBs with sulfide and silicon,as well as a source of inspiration for future research.

Myeloid-specific targeting of Notch ameliorates murine renal fibrosis via reduced infiltration and activation of bone marrowderived macrophage

Macrophages play critical roles in renal fibrosis.However,macrophages exhibit ontogenic and functional heterogeneities,and which population of macrophages contributes to renal fibrosis and the underlying mechanisms remain unclear.In this study,we genetically targeted Notch signaling by disrupting the transcription factor recombination signal binding protein-JK(RBP-J),to reveal its role in regulation of macrophages during the unilateral ureteral obstruction(UUO)-induced murine renal fibrosis.Myeloid-specific disruption of RBP-J attenuated renal fibrosis with reduced extracellular matrix deposition and myofibroblast activation,as well as attenuated epithelial-mesenchymal transition,likely owing to the reduced expression of TGF-β.Mean while,RBP-J deletion significantly hampered macrophage infiltration and activation in fibrotic kidney,although their proliferation appeared unaltered.By using macrophage clearance experiment,we found that kidney resident macrophages made negligible contribution,but bone marrow(BM)-derived macrophages played a major role in renal fibrogenesis.Further mechanistic analyses showed that Notch blockade reduced monocyte emigration from BM by down-regulating CCR2 expression.Finally,we found that myeloid-specific Notch activation aggravated renal fibrosis,which was mediated by CCR2^+macrophages infiltration.In summary,our data have unveiled that myeloid-specific targeting of Notch could ameliorate renal fibrosis by regulating BM-derived macrophages recruitment and activation,providing a novel strategy for intervention of this disease.

Fabrication of metal-organic framework-based nanofibrous separator via one-pot electrospinning strategy

Metal-organic framework(MOF)/polymer composites have attracted extensive attention in the recent years.However,it still remains challenging to efficiently and effectively fabricate these composite materials.In this study,we propose a facile one-pot electrospinning strategy for preparation of HKUST-1/polyacrylonitrile(PAN)nanofibrous membranes from a homogeneous stock solution containing HKUST-1 precursors and PAN.MOF crystallization and polymer solidification occur simultaneously during the electrospinning process,thus avoiding the issues of aggregation and troublesome multistep fabrication of the conventional approach.The obtained HKUST-1/PAN electrospun membranes show uniform MOF distribution throughout the nanofibers and yield good mechanical properties.The membranes are used as separators in Li-metal full batteries under harsh testing conditions,using an ultrathin Li-metal anode,a high mass loading cathode,and the HKUST-1/PAN nanofibrous separator.The results demonstrate significantly improved cycling performance(capacity retention of 83.1%after 200 cycles)under a low negative to positive capacity ratio(N/P ratio of 1.86).The improvement can be attributed to an enhanced wettability of the separator towards electrolyte stemmed from the nanofibrous structure,and a uniform lithium ion flux stabilized by the open metal sites of uniformly distributed HKUST-1 particles in the membrane during cycling.

Synergistic effects of autophagy/mitophagy inhibitors and magnolol promote apoptosis and antitumor efficacy

Mitochondria as a signaling platform play crucial roles in deciding cell fate.Many classic anticancer agents are known to trigger cell death through induction of mitochondrial damage.Mitophagy,one selective autophagy,is the key mitochondrial quality control that effectively removes damaged mitochondria.However,the precise roles of mitophagy in tumorigenesis and anticancer agent treatment remain largely unclear.Here,we examined the functional implication of mitophagy in the anticancer properties of magnolol,a natural product isolated from herbal Magnolia officinalis.First,we found that magnolol induces mitochondrial depolarization,causes excessive mitochondrial fragmentation,and increases mitochondrial reactive oxygen species(mtROS).Second,magnolol induces PTEN-induced putative kinase protein 1(PINK1)-Parkin-mediated mitophagy through regulating two positive feedforward amplification loops.Third,magnolol triggers cancer cell death and inhibits neuroblastoma tumor growth via the intrinsic apoptosis pathway.Moreover,magnolol prolongs the survival time of tumor-bearing mice.Finally,inhibition of mitophagy by PINK1/Parkin knockdown or using inhibitors targeting different autophagy/mitophagy stages significantly promotes magnolol-induced cell death and enhances magnolol's anticancer efficacy,both in vitro and in vivo.Altogether,our study demonstrates that magnolol can induce autophagy/mitophagy and apoptosis,whereas blockage of autophagy/mitophagy remarkably enhances the anticancer efficacy of magnolol,suggesting that targeting mitophagy may be a promising strategy to overcome chemoresistance and improve anticancer therapy.

Designing safer lithium-based batteries with nonflammable electrolytes:A review

Lithium-based batteries have had a profound impact on modern society through their extensive use in portable electronic devices,electric vehicles,and energy storage systems.However,battery safety issues such as thermal runaway,fire,and explosion hinder their practical application,especially for using metal anode.These problems are closely related to the high flammability of conventional electrolytes and have prompted the study of flameretardant and nonflammable electrolytes.Here,we review the recent research on nonflammable electrolytes used in lithium-based batteries,including phosphates,fluorides,fluorinated phosphazenes,ionic liquids,deep eutectic solvents,aqueous electrolytes,and solid-state electrolytes.Their flame-retardant mechanisms and efficiency are discussed,as well as their influence on cell electrochemical performance.We conclude with a summary of future prospects for the design of nonflammable electrolytes and the construction of safer lithium-based batteries.

脐孔子宫内膜异位症4例报道并文献复习

目的探讨脐孔子宫内膜异位症临床发病特点、诊断和治疗策略。方法分析4例脐孔子宫内膜异位症患者的临床资料,并进行相关文献复习回顾。结果4例患者行脐部异位内膜切除术,病理组织学提示真皮下纤维组织内存在子宫内膜腺体、间质和含铁血黄素的巨噬细胞,证实为脐孔子宫内膜异位症,术后随访无复发。结论脐孔子宫内膜异位症发病率较低,但存在复发和恶性转化的可能,临床上应重视妇科体检,早发现早治疗,并结合病理活检予以确诊,减少漏诊和提高治愈率。

SARS-CoV-2 immunity and functional recovery of COVID-19 patients 1-year after infection

The long-term immunity and functional recovery after SARS-CoV-2 infection have implications in preventive measures and patient quality of life.Here we analyzed a prospective cohort of 121 recovered COVID-19 patients from Xiangyang,China at 1-year after diagnosis.Among them,chemiluminescence immunoassay-based screening showed 99%(95%CI,98–100%)seroprevalence 10–12 months after infection,comparing to 0.8%(95%CI,0.7–0.9%)in the general population.Total anti-receptor-binding domain(RBD)antibodies remained stable since discharge,while anti-RBD IgG and neutralization levels decreased over time.A predictive model estimates 17%(95%CI,11–24%)and 87%(95%CI,80–92%)participants were still 50%protected against detectable and severe re-infection of WT SARS-CoV-2,respectively,while neutralization levels against B.1.1.7 and B.1.351 variants were significantly reduced.All non-severe patients showed normal chest CT and 21%reported COVID-19-related symptoms.In contrast,53%severe patients had abnormal chest CT,decreased pulmonary function or cardiac involvement and 79%were still symptomatic.Our findings suggest long-lasting immune protection after SARS-CoV-2 infection,while also highlight the risk of immune evasive variants and long-term consequences for COVID-19 survivors.