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Photo-thermal synergistic excitation:Feasible strategy to detect ethanol for wide bandgap ZIF-8at low work temperature

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Journal of Environmental Sciences 2024年第4期138卷 112-120页

作者： Shuhao Shi qian Du Ming Hou Xiaolei Ye Li Yang Shenghui Guo Jianhong yi Ullah Ehsan Hongbo zeng State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China Department of Chemical and Materials Engineering University of AlbertaEdmonton T6G 2V4Canada FEMTO-ST Institute(UMR CNRS 6174) Universite de Bourgogne Franche-Comte(UBFC)Universite de technologie de Belfort Montbéliard(UTBM)Site de MontbeliardBelfort F-90010France Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

Zeolitic Imidazolate Framework-8(ZIF-8)material was prepared by chemical precipitation *** microstructure and physical properties of the as-prepared samples were characterized by XRD,BET,FESEM and UV *** self-made four-channel measurement device was used to test the gas sensitivity of ZIF-8 material toward ethanol gas under photo-thermal synergistic *** results showed that the sample was typical ZIF-8(E_(g)=4.96 eV)with a regular dodecahedron shape and the specific surface is up to 1793 m^(2)/*** as-prepared ZIF-8 has a gas response value of 55.04 to 100 ppm ethanol at 75℃ and it shows good gas sensing selectivity and repeated *** excellent gas sensitivity can be attributed to the increase of free electron concentration in the ZIF-8 conduction band by photo-thermal synergistic excitation,and the large specific surface area of ZIF-8 material provides more active sites for gas-solid surface *** reaction mechanism of ZIF-8 material under multi-field excitation was also discussed.

关键词： ZIF-8 material Photo-thermal synergistic excitation UV-light irradiation Photon-generated electron and hole Gas-sensitive property

Boson star superradiance

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 69-78页

作者： He-Yu Gao Paul M.Saffin yi-Jie Wang qi-Xin Xie Shuang-Yong Zhou School of Physical Sciences University of Science and Technology of ChinaHefei 230026China School of Physics and Astronomy University of NottinghamUniversity ParkNottingham NG72RDUK Interdisciplinary Center for Theoretical Study University of Science and Technology of ChinaHefei 230026China Peng Huanwu Center for Fundamental Theory Hefei 230026China

Recently,it has been realized that in some systems internal space rotation can induce energy amplification for scattered waves,similar to rotation in real *** particularly,it has been shown that energy extraction is possible for a Q-ball,a stationary non-topological soliton that is coherently rotating in its field *** this paper,we generalize the analysis to the case of boson stars,and show that the same energy extraction mechanism still works for boson stars.

关键词： superradiance boson star field space rotation

Research progress of tumor-associated macrophages in immune checkpoint inhibitor tolerance in colorectal cancer

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World Journal of Gastrointestinal Oncology 2024年第10期16卷 4064-4079页

作者： qi Fan Zheng-Wei Fu Ming Xu Feng Lv Jia-Song Shi qi-qi zeng De-Hai Xiong Intestinal Center Chongqing University Three Gorges HospitalChongqing 404000China Department of Gastroenterology Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008Jiangsu ProvinceChina

The relevant mechanism of tumor-associated macrophages(TAMs)in the treatment of colorectal cancer patients with immune checkpoint inhibitors(ICIs)is discussed,and the application prospects of TAMs in reversing the treatment tolerance of ICIs are discussed to provide a reference for related *** a class of drugs widely used in clinical tumor immunotherapy,ICIs can act on regulatory molecules on cells that play an inhibitory role-immune checkpoints-and kill tumors in the form of an immune response by activating a variety of immune cells in the immune *** sensitivity of patients with different types of colorectal cancer to ICI treatment varies *** phenotype and function of TAMs in the colorectal cancer microenvironment are closely related to the efficacy of *** can regulate the phenotypic function of TAMs,and TAMs can also affect the tolerance of colorectal cancer to ICI *** play an important role in ICI resistance,and making full use of this target as a therapeutic strategy is expected to improve the immunotherapy efficacy and prognosis of patients with colorectal cancer.

关键词： Colorectal cancer Immune checkpoint inhibitor resistance Tumor microenvironment Tumor-associated macrophages Review

Deciphering the population structure and genetic basis of growth traits from whole-genome resequencing of the leopard coral grouper(Plectropomus leopardus)

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Zoological Research 2024年第2期45卷 329-340页

作者： Shao-Xuan Wu qi-Fan zeng Wen-Tao Han Meng-Ya Wang Hui Ding Ming-Xuan Teng Ming-yi Wang Pei-Yu Li Xin Gao Zhen-Min Bao Bo Wang Jing-Jie Hu MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life Sciences/Key Laboratory of Tropical Aquatic Germplasm of Hainan ProvinceSanya Oceanographic InstitutionOcean University of ChinaQingdaoShandong/SanyaHainan 266100/572025China Hainan Seed Industry Laboratory SanyaHainan 572025China Southern Marine Science and Engineer Guangdong Laboratory GuangzhouGuangdong 511458China

The leopard coral grouper(Plectropomus leopardus)is a species of significant economic *** artificial cultivation of *** has thrived in recent decades,the advancement of selective breeding has been hindered by the lack of comprehensive population genomic *** this study,we identified over 8.73 million single nucleotide polymorphisms(SNPs)through whole-genome resequencing of 326 individuals spanning six distinct ***,we categorized 226 individuals with high-coverage sequencing depth(≥14×)into eight clusters based on their genetic profiles and phylogenetic ***,four of these clusters exhibited pronounced genetic differentiation compared with the other *** identify potentially advantageous loci for ***,we examined genomic regions exhibiting selective sweeps by analyzing the nucleotide diversity(θπ)and fixation index(FST)in these four *** these high-coverage resequencing data,we successfully constructed the first haplotype reference panel specific to *** achievement holds promise for enabling high-quality,***,we combined low-coverage sequencing data with imputation techniques for a genome-wide association study,aiming to identify candidate SNP loci and genes associated with growth traits.A significant concentration of these genes was observed on chromosome 17,which is primarily involved in skeletal muscle and embryonic development and cell ***,our detailed investigation of growth-related SNPs across the eight clusters revealed that cluster 5 harbored the most promising candidate SNPs,showing potential for genetic selective breeding *** findings provide a robust toolkit and valuable insights into the management of germplasm resources and genome-driven breeding initiatives targeting ***.

关键词： Plectropomus leopardus Whole-genome resequencing Growth Haplotype reference panel Single nucleotide polymorphisms

Recent Progress of Earth Observation Satellites in China

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空间科学学报 2024年第4期44卷 731-740页

作者： HUANG Shusong qi Wenping ZHANG Shuai XIA Tian WANG Jingqiao zeng Yong China Centre for Resources Satellite Data and Application Beijing 100094

Currently,China has 32 Earth observation satellites in *** satellites can provide various data such as optical,multispectral,infrared,and *** spatial resolution of China Earth observation satellites ranges from low to medium to *** satellites possess the capability to observe across multiple spectral bands,under all weather conditions,and at all *** data of China Earth observation satellites has been widely used in fields such as natural resource detection,environmental monitoring and protection,disaster prevention and reduction,urban planning and mapping,agricultural and forestry surveys,land survey and geological prospecting,and ocean forecasting,achieving huge social *** article introduces the recent progress of Earth observation satellites in China since 2022,especially the satellite operation,data archiving,data distribution and data coverage.

关键词： China Earth Observation Satellites Satellite operation Data archiving Data distribution Data coverage

Crystal structures of RNA-dependent RNA polymerases from Jingmen tick virus and Alongshan virus

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hLife 2024年第1期2卷 18-31页

作者： Zhenyang Liu qi Peng Pu Han Lu Kuai Jianxun qi yi Shi CAS Key Laboratory of Pathogen Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijingChina Beijing Life Science Academy BeijingChina International Institute of Vaccine Research and Innovation Savaid Medical SchoolUniversity of Chinese Academy of SciencesBeijingChina Center for Influenza Research and Early-warning CAS-TWAS Center of Excellence for Emerging Infectious DiseaseChinese Academy of SciencesBeijingChina Research Unit of Adaptive Evolution and Control of Emerging Viruses Chinese Academy of Medical SciencesBeijingChina

Jingmenviruses are a group of flavi-like viruses with segmented genome and have been found in various types of hosts,including humans,cattle,monkeys,bats,rodents,sheep,ticks,mosquitoes and ***,including the Jingmen tick virus(JMTV)and Alongshan virus(ALSV),have been associated with febrile illness and flu-like symptoms in *** polymerase plays critical roles in genome replication and transcription and is an ideal target for antiviral ***,we determined the crystal structures of RNA-dependent RNA polymerase(RdRp)domains of JMTV and ALSV at 2.6Åand 3.2Åresolutions,*** overall structures of JMTV and ALSV RdRp domains are similar to those from the typical unsegmented viruses in Flaviviridae family,especially the Flavivirus *** and ALSV RdRps can be divided into three subdomains and the catalytical Motif A-G are conserved like the typical flaviviruses,whereas the zinc-binding pockets are absent from the JMTV and ALSV *** 50-ends of jingmenvirus genomes are varied in length and sequence,and a highly conserved 8-nucleotide element located on the tip of stem loop A was identified and shown to be required for binding with RdRp and performing de novo replication *** findings provide important structural insights into RdRp of segmented flavivirus and reveal the key region of virus genome responsible for replication initiation,which would promote molecular understanding of segmented flavivirus replication and the structure-based design of antiviral drugs against flaviviruses.

关键词： Jingmenviruses X-rays RNA-dependent RNA polymerase replication

Body composition and metabolic syndrome in patients with type 1 diabetes

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World Journal of Diabetes 2024年第1期15卷 81-91页

作者： qiong zeng Xiao-Jing Chen yi-Ting He Ze-Ming Ma yi-Xi Wu Kun Lin Department of Neurology The First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Medical College Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of Endocrinology The First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

BACKGROUND In recent years,the prevalence of obesity and metabolic syndrome in type 1 diabetes(T1DM)patients has gradually *** resistance in T1DM deserves *** is necessary to clarify the relationship between body composition,metabolic syndrome and insulin resistance in T1DM to guide clinical treatment and *** To assess body composition(BC)in T1DM patients and evaluate the relationship between BC,metabolic syndrome(MS),and insulin resistance in these *** A total of 101 subjects with T1DM,aged 10 years or older,and with a disease duration of over 1 year were *** impedance analysis using the Tsinghua-Tongfang BC Analyzer BCA-1B was employed to measure various BC *** and laboratory data were collected,and insulin resistance was calculated using the estimated glucose disposal rate(eGDR).RESULTS MS was diagnosed in 16/101 patients(15.84%),overweight in 16/101 patients(15.84%),obesity in 4/101(3.96%),hypertension in 34/101(33.66%%)and dyslip-idemia in 16/101 patients(15.84%).Visceral fat index(VFI)and trunk fat mass were significantly and negatively correlated with eGDR(both Pying visceral fat(trunk fat),may play an important role in identifying the increased risk of

关键词： Body composition Metabolic syndrome Insulin resistance Visceral fat Estimated glucose disposal rate

Iridium-Catalyzed Asymmetric Hydrogenation of Dialkyl Imines

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CCS Chemistry 2024年第4期6卷 905-911页

作者： Zheng Wang Xin-yi Yang Yue Xu qi-Lin Zhou State Key Laboratory and Institute of Elemento-Organic Chemistry College of ChemistryFrontiers Science Center for New Organic MatterNankai UniversityTianjin 300071

Asymmetric hydrogenation of dialkyl imines to chiral amines is difficult because the two alkyls of imines are so similar in spatial and electronic structure that chiral catalysts are difficult to distinguish between *** this study,we described an asymmetric hydrogenation of dialkyl imines by a chiral iridium catalyst containing spiro phosphine-amine-phosphine *** precisely adjusting the chiral pocket of catalyst,a highly efficient catalyst was *** this catalyst,a variety of dialkyl imines were hydrogenated to chiral amines with high yield and enantioselectivity.

关键词： spiro PNP ligand iridium catalyst enantioselective hydrogenation dialkyl imines chiral amines

Exploring the mechanisms of calcium carbonate deposition on various substrates with implications for effective anti-scaling material selection

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Petroleum Science 2024年第4期21卷 2870-2880页

作者： Lu Gong Fei-yi Wu Ming-Fei Pan Jun Huang Hao Zhang Jing-Li Luo Hong-Bo zeng College of Science China University of Petroleum Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of Petroleum Basic Research Center for Energy Interdisciplinary College of Science China University of Petroleum Department of Chemical and Materials Engineering University of Alberta Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education) School of Mechanical Engineering Shandong University

The unexpected scaling phenomena have resulted in significant damages to the oil and gas industries,leading to issues such as heat exchanger failures and pipeline clogging. It is of practical and fundamental importance to understand the scaling mechanisms and develop efficient anti-scaling strategies. However,the underlying surface interaction mechanisms of scalants(e.g., calcite) with various substrates are still not fully understood. In this work, the colloidal probe atomic force microscopy(AFM) technique has been applied to directly quantify the surface forces between calcite particles and different metallic substrates,including carbon steel(CR1018), low alloy steel(4140), stainless steel(SS304) and tungsten carbide,under different water chemistries(i.e., salinity and p H). Measured force profiles revealed that the attractive van der Waals(VDW) interaction contributed to the attachment of the calcium carbonate particles on substrate surfaces, while the repulsive electric double layer(EDL) interactions could inhibit the attachment behaviors. High salinity and acidic p H conditions of aqueous solutions could weaken the EDL repulsion and promote the attachment behavior. The adhesion of calcite particles with CR1018 and4140 substrates was much stronger than that with SS304 and tungsten carbide substrates. The bulk scaling tests in aqueous solutions from an industrial oil production process showed that much more severe scaling behaviors of calcite was detected on CR1018 and 4140 than those on SS304 and tungsten carbide, which agreed with surface force measurement results. Besides, high salinity and acidic p H can significantly enhance the scaling phenomena. This work provides fundamental insights into the scaling mechanisms of calcite at the nanoscale with practical implications for the selection of suitable antiscaling materials in petroleum industries.

关键词： Scaling phenomenon Metallic substrates Surface forces Bulk scaling tests