Roles of gypsum/salt-bearing sequence in hydrocarbon accumulation and storage

Gypsum/salt beds are widely developed in petroliferous basins across the world.Most basins with gypsum/salt beds have been proven to host abundant hydrocarbon resources.Previous studies on the effects of gypsum/salt beds on hydrocarbon reservoirs primarily focused on their excellent sealing property as cap rocks.However,an increasing number of exploration discoveries have shown that gypsum/salt beds have the potential to promote the formation of high-quality source rocks and hydrocarbon reservoirs.Gypsum/salt beds influence the generation,preservation and accumulation of hydrocarbons.Based on the systematic analysis of the generation of hydrocarbons in global gypsum/saltbearing sequences,the study discussed the control of gypsum/salt beds on play elements,and explore the relationship between the development of gypsum/salt beds and global large-and medium-scale hydrocarbon reservoirs.Furthermore,we analyzed the correlation between typical gypsum/saltbearing sequences and their hydrocarbon generation potentials in China.In-depth analysis shows three patterns in terms of the spatial superimposition of gypsum/salt beds and source rocks,that is,postsalt pattern,inter-salt pattern and pre-salt pattern.Among others,the source rocks of the inter-salt pattern are widely developed in salt basins and of great potential for hydrocarbon exploration.

Tea domain transcription factor TEAD4 mitigatesTGF-β signaling and hepatocellular carcinomaprogression independently of YAP

Tea domain transcription factor 4 (TEAD4) plays a pivotal role in tissue development and homeostasis by interacting with Yesassociated protein (YAP) in response to Hippo signaling inactivation. TEAD4 and YAP can also cooperate with transforminggrowth factor-β (TGF-β)-activated Smad proteins to regulate gene transcription. Yet, it remains unclear whether TEAD4 playsa YAP-independent role in TGF-β signaling. Here, we unveil a novel tumor suppressive function of TEAD4 in liver cancer viamitigating TGF-β signaling. Ectopic TEAD4 inhibited TGF-β-induced signal transduction, Smad transcriptional activity, and targetgene transcription, consequently suppressing hepatocellular carcinoma cell proliferation and migration in vitro and xenografttumorgrowth in mice. Consistently, depletion of endogenous TEAD4 by siRNAs enhanced TGF-β signaling in cancer cells. Mechanistically,TEAD4 associates with receptor-regulated Smads (Smad2/3) and Smad4 in the nucleus, thereby impairing the binding of Smad2/3to the histone acetyltransferase p300. Intriguingly, these negative effects of TEAD4 on TGF-β/Smad signaling are independent ofYAP, as impairing the TEAD4–YAP interaction through point mutagenesis or depletion of YAP and/or its paralog TAZ has little effect.Together, these results unravel a novel function of TEAD4 in fine tuning TGF-β signaling and liver cancer progression in a YAPindependent manner.

Carbon dots confined nanosheets assembled NiCO_(2)S_(4)@CDs cross-stacked architecture for enhanced sodium ion storage

Na^(+)batteries(SIBs)have been emerging as the most promising candidate for the next generation of secondary batteries.However,the development of high-performance and cost-effective anode materials is urgently needed for the large-scale applications of SIBs.In this study,carbon dots confined bimetallic sulfide(NiCO_(2)S_(4))architecture(NiCO_(2)S_(4)@CDs)was proposed and synthesized from assembling nanosheets into cross-stacked superstructure and the subsequent confinement of carbon dots.This novel decussated structure assembly from nanosheets is greatly beneficial to the structure stability of electrode material during the successive charge/discharge processes.Besides,the CDs based carbon conductive network can enhance the electrical conductivity for facilitating the easy transport of electron/Na^(+).Benefitting from these advantages,NiCO_(2)S_(4)@CDs exhibits high-rate performance and an ultralong cycling life in SIBs.Specifically,the specific capacity of NiCO_(2)S_(4)@CDs can reach the discharge specific capacity as high as 568.9 mAh/g at 0.5 A/g,which can also maintain 302.7 m Ah/g after 750 cycles at 5.0 A/g.Additionally,ex-situ characterization techniques such as ex-situ XRD and ex-situ XPS were employed to further explore the sodium storage mechanism of the NiCO_(2)S_(4)@CDs anode.

Cancer-associated adipocyte-derived G-CSF promotes breast cancer malignancy via Stat3 signaling

Adipocyte is the most predominant cell type in the tumor microenvironment of breast cancer and plays a pivotal role in cancer progression,yet the underlying mechanisms and functional mediators remain elusive.We isolated primary preadipocytes from mammary fat pads of human breast cancer patients and generated mature adipocytes and cancer-associated adipocytes(CAAs)in vitro.The CAAs exhibited significantly different gene expression profiles as assessed by transcriptome sequencing.One of the highly expressed genes in CAAs is granulocyte colony-stimulating factor(G-CSF).Treatment with recombinant human G-CSF protein or stable expression of human G-CSF in triple-negative breast cancer(TNBC)cell lines enhanced epithelial–mesenchymal transition,migration,and invasion of cancer cells,by activating Stat3.Accordantly,targeting G-CSF/Stat3 signaling with G-CSF-neutralizing antibody,a chemical inhibitor,or siRNAs for Stat3 could all abrogate CAA-or G-CSF-induced migration and invasion of breast cancer cells.The pro-invasive genes MMP2 and MMP9 were identified as target genes of G-CSF in TNBC cells.Furthermore,in human breast cancer tissues,elevated G-CSF expression in adipocytes is well correlated with activated Stat3 signal in cancer cells.Together,our results suggest a novel strategy to intervene with invasive breast cancers by targeting CAA-derived G-CSF.

Factors influencing Li^(+)migration in garnet-type ceramic electrolytes

Garnet-type ceramic electrolyte with exceptionally high Li^(+) conductivity has attracted wide interests for the development of safe electrochemical devices.However,the factors affecting the ionic migration still deserve more attentions.In this study,five garnet-types ceramic electrolyte were chosen to investigate the factors.The thermal behavior of garnet-type electrolyte during sintering was studied to achieve high conductivity.The electrochemical properties are correlated with crystal structure,migrating route and lattice parameters.Nine influening factors were discussed to analyze the ionic migration in garnet-type ceramic electrolyte.

Visual sensing of picric acid in 100% aqueous media based on supramolecular polythiophene assemblies with colorimetric and fluorescent dual response

A colorimetric and fluorometric dual probe based on a water-soluble polythiophene derivative(PMTPBA)was designed and synthesized.It can be applied to determination of picric acid(PA) in 100% aqueous solution.The approach relies on the formation of supramolecular polythiophene assemblies in the presence of PA through electrostatic,charge transfer and π-π stacking interactions.This probe could be utilized for the rapid and visual detection of PA both in aqueous solution and solid support with high specificity and sensitivity.The detection limit of this sensor is as low as 5.0 × 10^-8 mol/L.

基于过氧乙酸的高级氧化技术及在水处理消毒中的应用

近年来有研究发现基于过氧乙酸(PAA)的高级氧化技术(AOP)不仅可以降解水中新兴的微污染物,还比单独PAA有更好的消毒效果。本文总结了PAA的高级氧化技术活化机理,阐述了PAA的AOP在水消毒中的应用研究进展。基于目前的研究,发现UV/PAA在水消毒的前沿问题中,如藻类及藻毒素的去除、真菌及抗生素耐药菌灭活等方面都有良好的处理效果,有待更进一步的探索,其他方式活化PAA的AOP在水消毒领域的研究数量不多,拥有广阔的研究潜力,除此之外,对PAA的AOP中可能存在的消毒副产物进行识别也可能是未来的研究热点。

民富是国富之源

根据近几年的经验,“一带一路”加速了中国经济的发展,包括民营企业的发展。随着海外市场的开辟,与外国企业合作经营,并参与到“一带一路”建设的民营企业也越来越多。广泛地参与国际合作与竞争将有利于中国民营企业的进一步发展。

Sentiment Analysis for MOOC Course Reviews

Currently,increasing users are using MOOC platforms to choose courses and leave text comments with emotional overtones.The traditional words vector representationmethod uses static method to extract text information,which ignores the text position information.The traditional convolutional neural network fails to make full use of the semantic features and association information of the text between channels,which will cause inaccurate text sentiment classification.In order to solve the problems,a text classification model based on Albert and Capsule Network and attention mechanism is proposed.The model was verified on the MOOC comment data set,and compared with the traditional user comment sentiment analysis model.The results show the accuracy of the model was improved to a certain extent.