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Tungsten 2024年第2期6卷 422-427页

作者： Xiu-Li Wang Yong-Zhen chen Zhi-Han chang Yu-chun Lin Jing-yi Ma college of chemistry and Materials Engineering Bohai UniversityJinzhou 121013China Professional Technology Innovation center of Liaoning Province for conversion Materials of Solar cell Jinzhou 121013China

By employing a new semi-rigid pyrazole-amide-derived bis(pyridyl)ligand[N,N'-bis(4-picolylamine)-1-hydropyrazole(4-dpap)],a new homopolymolybdate-based two-dimensional(2D)plate-like complex[co(4-dpap)(H_(2)O)(β-Mo_(8)O_(2)6)1/2](1)has been prepared under solvothermal condition and structurally ***β-Mo_(8)anions are fi xed between the 2D metal–organic networks[co(4-dpap)(H_(2)O)]n 2n+via hydrogen-bonding *** 1 possesses satisfactory specifi c capacitance of 1512.4 F·g^(−1)(current density:1 A·g^(−1))and good cycling stability(90.8%after 1000 cycles).Moreover,1 represents a promising amperometric sensor for measurement of cr(Ⅵ)with low detection limit(0.042μmol·L^(−1))and high *** insertion ofβ-Mo_(8)anions between the unique 2D metal−organic networks improves the active area of polyoxometalates,which further promotes electrochemical performance.

关键词： Homopolymolybdate Metal–organic network Pyrazole-amide-derived bis(pyridyl)ligand Supercapacitor Electrochemical sensor

copper(Ⅰ)-catalyzed diastereodivergent construction of vicinal P-chiral and c-chiral centers facilitated by dual“soft-soft”interaction

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chinese chemical Letters 2024年第7期35卷 264-270页

作者： Yan-Bo Li yi Li Liang yin cAS Key Laboratory of Synthetic chemistry of Natural Substances Centre for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

A copper(Ⅰ)-catalyzed diastereodivergent addition of phosphinothioates(HP(S)ROR')toα,β-unsaturated thioamides is disclosed,which constructs vicinal P-chiral and c-chiral centers in generally high diastereoand *** this reaction,the kinetic resolution of HP(S)ROR'occurs,which affords(R)-HP(S)Ph OMe in high enantioselectivity in the addition with(R,R)-Ph-BPE as the *** is found through control experiment that dual“soft-soft”interaction,indicated by both1H and31P NMR experiments,is indispensable in the present *** first“soft-soft”interaction between copper(Ⅰ)catalyst and HP(S)ROR'enables facile deprotonation to generate nucleophilic[cu]-SPROR'*** second one between the[cu]-SPROR'species andα,β-unsaturated thioamides facilitated the nucleophilic ***,both Michael adducts and(R)-HP(S)PhOMe are easily converted to synthetically useful compounds.

关键词： copper catalysis Asymmetric catalysis Diastereodivergent synthesis P-chirality "Soft-soft"interaction

Atmospheric chemistry of 2-nitrobenzaldehyde:Initiated by photo-excitation,OH-oxidation,and small TiO_(2) clusters adsorption catalysis

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Journal of Environmental Sciences 2024年第5期139卷 123-137页

作者： Feng-Yang Bai Xiang-Huan Liu Ting-Ting Meng Zhou Yu yi-chen Wang Shuang Ni Zhen Zhao Institute of catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang 110034China

The fate of 2-nitrobenzaldehyde(2-NBA)is of interest in atmospheric chemistry as it is a semi-volatile organic compound with high *** study presents a quantum chemical study of the gas-phase reactions of 2-NBA photo-excitation and OH-oxidation in the absence and presence of small TiO_(2) *** further understand the unknown photolysis mechanism,the photo-reaction pathways of ground singlet state and the lying excited triplet state of 2-NBA were investigated including the initial and subsequent reactions of proton transfer,direct cO,NO_(2),and HcO elimination routes in the presence of O_(2) and ***,the OH-mediated degradation of 2-NBA proceeded via five H-extraction and six OH-addition channels by indirect mechanism,which follows a succession of reaction steps initiated by the formation of weakly stable intermediate *** H-extraction from the-cHO group was the dominant pathway with a negative activation energy of-1.22 kcal/*** calculated rate coefficients at 200–600 K were close to the experimental data in literature within 308-352 K,and the kinetic negative temperature independence was found in both experimental literature and computational ***,2-NBA was favored to be captured onto small TiO_(2) clusters via six adsorption configurations formed via various combination of three types of bonds of Ti…O,Ti…c,and O…H between the molecularly adsorbed 2-NBA and TiO_(2) *** indicted that the chemisorptions of aldehyde oxygen have largest *** results suggested adsorption conformations have a respectable impact on the catalysis *** study is significant for understanding the atmospheric chemistry of 2-nitrobenzaldehyde.

关键词： 2-nitrobenzaldehyde OH radical oxidation Rate coefficient Photolysis mechanism Adsorption catalysis

All-sky Guide Star catalog for cSST

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Research in Astronomy and Astrophysics 2024年第4期24卷 35-59页

作者： Hui-Mei Feng Zi-Huang cao Man I Lam Ran Li Hao Tian Da-yi yin Yuan-Yu Yang Xin Zhang Dong-Wei Fan yi-Qiao Dong Xin-Feng Li Wei Wang Long Li Hugh RAJones yi-Han Tao Jia-Lu Nie Pei-Pei Wang Mao-Yuan Liu He-jun Yang chao Liu Key Laboratory of cosmic Rays(Tibet University) Ministry of EducationLhasa 850000China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of chineseAcademy of Sciences Beijing 100049China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai200083China Technology and Engineering center for Space Utilization.chinese Academy of Sciences Beijing 100094China changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China centre for Astrophysics University of HertfordshireHatfieldUK Beijing University of Technology Beijing 100124China

The china Space Station Telescope(cSST)is a two-meter space telescope with multiple back-end *** Fine Guidance Sensor(FGS)is an essential subsystem of the cSST Precision Image Stability System to ensure the required absolute pointing accuracy and line-of-sight *** this study,we construct the Main Guide Star catalog for *** accomplish this,we utilize the information about the FGS and object information from the Gaia Data Release *** provide an FGS instrument magnitude and exclude variables,binaries,and high proper motion stars from the catalog to ensure uniform FGS guidance ***,we generate a HEALPix index,which provides a hierarchical tessellation of the celestial sphere,and employ the Voronoi algorithm to achieve a homogeneous distribution of stars across the *** distribution ensures adequate coverage and sampling of the *** performance of the cSST guide star catalog was assessed by simulating the field of view of the FGS according to the cSST mock survey strategy *** analysis of the results indicates that this catalog provides adequate coverage and *** catalog's performance meets the FGS requirements,ensuring the functioning of the FGS and its guidance capabilities.

关键词： catalogs astrometry instrumentation:detectors

MicroR-9c-5p and novel-mir50 co-target Akt to regulate Lasioderma serricorne reproduction

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Insect Science 2024年第1期31卷 106-118页

作者： yi Yan Dong-Dong Qin Hong Yang Kang-Kang Xu can Li Wen-Jia Yang Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region Institute of EntomologyGuizhou UniversityGuiyangChina Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region College of Biology and Environmental EngineeringGuiyang UniversityGuiyangChina

High fecundity is a common characteristic of insect pests which increases the difficulty of population ***/threonine kinase Akt is an indispensable component of the insulin signaling *** of LsAkt severely hinders reproduction in Lasioderma serricorne,a stored product insect ***,the post-transcriptional pathway of LsAkt in *** remains *** study identified 2 binding sites of miR-9c-5p and novel-mir50 in the coding sequences of *** expression profiles of 2 microRNAs(miRNAs)and LsAkt displayed an opposite pattern during the adult *** reporter assay showed that novel-mir50 and miR-9c-5p could downregulate the expression of *** of miR-9c-5p and novel-mir50 by injection of mimics inhibited the expression of LsAkt and reduced oviposition,decreased egg hatchability,and blocked ovarian *** also decreased the expression of genes involved in ovarian development(LsVg and LsVgR)and the nutritional signaling pathway(LsTOR,LsS6K,and Ls4EBP),and reduced the phosphorylation of ***,injection of miR-9c-5p and novel-mir50 inhibitors induced the expressions of LsAkt,LsVg,LsVgR,LsTOR,LsS6K,and Ls4EBP,enhanced Akt phosphorylation level,and accelerated ovarian *** of bovine insulin downregulated the expression of miR-9c-5p and novel-mir50 and upregulated the LsAkt *** also rescued the reproductive development defects associated with miR-9c-5p/novel-mir50 overexpression,forming a positive regulatory loop of insulin *** results indicate that miR-9c-5p/novel-mir50 regulates the female reproduction of *** by targeting Akt in response to insulin *** data also demonstrate the effects of the insulin/miRNA/Akt regulatory axis in insect reproduction.

关键词： Akt insulin Lasioderma serricorne microRNA reproduction

Intravitreal injection of conbercept for diabetic macular edema complicated with diabetic nephropathy

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 304-310页

作者： Yuan-Zhang Zhu Zhi-Zhi Dou Wen-ying Wang Qing-Yue Ma Wen-Dan yi Ning-Ning Yao yi-chong Liu Xiao-Di Gao Qian Zhang Wen-Juan Luo Department of Ophthalmology the Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina

AIM:To observe the therapeutic effect of conbercept on diabetic macular edema(DME)complicated with diabetic nephropathy(DN).METHODS:In this retrospective study,54 patients(54 eyes)that diagnosed as DME from January 2017 to October 2021 were *** patients were divided into two groups:DME patients with DN(25 eyes),and DME patients without DN(29 eyes).General conditions were collected before treatment,laboratory tests include fasting blood glucose,HbA1c,microalbumin/creatinine,serum *** coherence tomography(OcT)was used to check the ellipsoidal zone(EZ)and external limiting membrane(ELM)*** macular thickness(cMT),best corrected visual acuity(BcVA),and retinal hyperreflective foci(HF)as well as numbers of injections were ***:There were significant differences between fasting blood glucose,HbA1c,serum creatinine,urinary microalbumin/creatinine,and estimated glomerular filtration rate(eGFR)between the two groups(all Pcontinuity in the DME+DN group was worse than that in the DME group(PcVA(logMAR)in the DME group was significantly better than that in the DME+DN group at the same time points during treatment(all PcMT and HF values were significantly higher in the DME+DN group than that in the DME group at the all time points(all Pcantly decreased in both groups with time during *** 6mo after treatment,the mean number of injections in the DME+DN and DME group was 4.84±0.94 and 3.79±0.86,***:conbercept has a significant effect in short-term treatment of DME patients with or without DN,and can significantly ameliorate BcVA,cMT and the number of HF,treatment efficacy of DME patients without DN is better than that of DME patients with DN.

关键词： conbercept diabetic nephropathy diabetic macular edema optical coherence tomography

A proton birdcage coil integrated with interchangeable single loops for multi-nuclear MRI/MRS

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第2期25卷 168-180页

作者： yi ZHANG Zhiyan QUAN Feiyang LOU Yujiao FANG Garth J.THOMPSON Gao cHEN Xiaotong ZHANG Department of Neurosurgery the Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou310009China Key Laboratory of Precise Treatment and clinical Translational Research of Neurological Diseases Hangzhou310009China MOE Frontier Science center for Brain Science and Brain-machine Integration Zhejiang UniversityHangzhou310058China Interdisciplinary Institute of Neuroscience and Technology College of Biomedical Engineering&Instrument ScienceZhejiang UniversityHangzhou310027China School of Medicine Zhejiang UniversityHangzhou310020China iHuman Institute School of Life Science and TechnologyShanghaiTech UniversityShanghai201210China college of Electrical Engineering Zhejiang UniversityHangzhou310027China

Energy metabolism is fundamental for *** encompasses the utilization of carbohydrates,lipids,and proteins for internal processes,while aberrant energy metabolism is implicated in many *** the present study,using three-dimensional(3D)printing from polycarbonate via fused deposition modeling,we propose a multi-nuclear radiofrequency(RF)coil design with integrated 1H birdcage and interchangeable X-nuclei(^(2)H,^(13)c,^(23)Na,and^(31)P)single-loop coils for magnetic resonance imaging(MRI)/magnetic resonance spectroscopy(MRS).The single-loop coil for each nucleus attaches to an arc bracket that slides unrestrictedly along the birdcage coil inner surface,enabling convenient switching among various nuclei and animal *** to a commercial 1H birdcage coil,the proposed 1H birdcage coil exhibited superior signal-excitation homogeneity and imaging signal-to-noise ratio(SNR).For X-nuclei study,prominent peaks in spectroscopy for phantom solutions showed excellent SNR,and the static and dynamic peaks of in vivo spectroscopy validated the efficacy of the coil design in structural imaging and energy metabolism detection simultaneously.

关键词： Energy metabolism Magnetic resonance imaging(MRI) Magnetic resonance spectroscopy(MRS) Multi-nuclear Radiofrequency coil Three-dimensional(3D)printing

computational design of bimetallic Tm_(2)@g-c_(9)N_(4)electrocatalysts for enhanced cO reduction toward c_(2)products

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chinese chemical Letters 2024年第7期35卷 484-490页

作者： Jiajun Wang Guolin yi Shengling Guo Jianing Wang Shujuan Li Ke Xu Weiyi Wang Shulai Lei Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387China Department of chemical Physics&Hefei National Laboratory for Physical Sciences at Microscale University of Science and Technology of ChinaHefei 230026China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China Hubei Longzhong Laboratory Xiangyang 441053China

Electrochemical cO reduction(EcOR)as a potential strategy for producing valuable chemicals and fuels has captured substantial ***,the currently available electrocatalysts suffer from poor selectivity and low Faradaic efficiency,limiting their industrial ***,we systematically investigate the potential of homonuclear bimetallic electrocatalysts,Tm_(2)@c_(9)N_(4)(TM=Fe,co,Ni,and cu),for the EcOR through extensive density functional theory *** findings suggest that all four proposed monolayers exhibit exceptional stability,making them highly suitable for experimental synthesis and practical ***,these transition-metal dual atoms anchored on c_(9)N_(4)monolayers show great potential in facilitating the production of high-value c_(2)products,such as c_(2)H_(5)OH and c_(2)H_(4),due to the significantly low limiting potentials(-0.06~-0.46 V)and small kinetic energy barriers(0.54–1.08 eV)for the cO coupling ***,with the exception of Ni_(2)@c_(9)N_(4),these bimetallic catalysts demonstrate the impressive suppression of the competitive hydrogen evolution reaction(HER),leading to a high selectivity for c_(2)products in *** predictions would accelerate the development of high-performance c_(9)N_(4)-based dual-atom catalysts for the EcOR.

关键词： c_(9)N_(4)monolayer Double-atom catalysts cO electroreduction Multi-carbon products Density functional theory

Simultaneous enhanced ammonia and nitrate removal from secondary effluent in constructed wetlands using a new manganese-containing substrate

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 91-102页

作者： Zhihao Xian Jun Yan Jingyi Dai Hao Wu Xin Zhang Wenbo Nie Fucheng Guo yi chen Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment(Ministry of Education) Chongqing UniversityChongqing 400044China college of Environment and Ecology Chongqing UniversityChongqing 400044China

constructed wetlands(cWs)are widely used to treat secondary ***,simultaneously removing ammonia(NH_(4)^(+)-N)and nitrate(NO_(3)^(–)–N)is challenging because of insufficient oxygen and carbon *** this study,a novel composite material(MPcM)comprising MnO_(2) and polycaprolactone was developed as a substrate for cWs to enhance the synchronous removal of NH_(4)^(+)–N and NO_(3)^(–)–*** cWs with a higher MPcM content(H-cW),lower MPcM content(LcW),and controlled cW(c-cW)exhibited average NH_(4)^(+)–N removal efficiencies of 75.69%,70.49%,and 52.40%,*** 15N isotope tracking technique showed that NH_(4)^(+)–N removal was attributed to anaerobic ammonia oxidation mediated by MnO2 reduction(Mnammox),which accounted for 17.16%–27.24%of the NH_(4)^(+)–N removal in the composite material layers(0–20 cm)of the H-cW and *** richness of ammonia oxidizers in the upper layers(40–50 cm)of the HcW and L-cW further facilitated NH_(4)^(+)–N ***,the average total nitrogen(TN)removal efficiencies of the H-cW and L-cW were 1.99 and 1.59 times that of c-cW,respectively,owing to enhanced denitrification by ***,N_(2)O emissions were reduced by 81.31%and 70.83%in the H-cW and L-cW,*** study provides an effective approach for improving nitrogen removal and reducing N2O emissions during the treatment of secondary effluent by cWs.

关键词： constructed wetland Nitrogen removal Manganese redox Polycaprolactone Nitrous oxide

Prognostic value of a nomogram model for postoperative liver metastasis of colon cancer

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World Journal of Gastrointestinal Surgery 2024年第4期16卷 1055-1065页

作者： De-Xin cheng Kang-Di Xu Han-Bo Liu yi Liu Department of Interventional Medicine Zhejiang Provincial People’s Hospital(Affiliated People’s HospitalHangzhou Medical College)Hangzhou 310014Zhejiang ProvinceChina General Surgery Cancer CenterDepartment of Vascular SurgeryZhejiang Provincial People’s Hospital(Affiliated People’s HospitalHangzhou Medical College)Hangzhou 310014Zhejiang ProvinceChina

BAcKGROUND colon cancer is one of the most common malignant tumors of the digestive *** metastasis after colon cancer surgery is the primary cause of death in patients with colon *** To construct a novel nomogram model including various factors to predict liver metastasis after colon cancer *** We retrospectively analyzed 242 patients with colon cancer who were admitted and underwent radical resection for colon cancer in Zhejiang Provincial People’s Hospital from December 2019 to December *** were divided into liver metastasis and non-liver metastasis ***,age,and other general and clinicopathological data(preoperative blood routine and biochemical test indexes)were *** risk factors for liver metastasis were analyzed using singlefactor and multifactorial logistic regression.A predictive model was then constructed and evaluated for *** Systemic inflammatory index(SII),c-reactive protein/albumin ratio(cAR),red blood cell distribution width(RDW),alanine aminotransferase,preoperative carcinoembryonic antigen level,and lymphatic metastasis were different between groups(PcAR,and RDW were risk factors for liver metastasis after colon cancer surgery(Pcurve was 0.93 for the column-line diagram prediction model constructed based on these risk factors to distinguish whether liver metastasis occurred *** actual curve of the column-line diagram predicting the risk of postoperative liver metastasis was close to the ideal curve,with good *** prediction model curves in the decision curve analysis showed higher net benefits for a larger threshold range than those in extreme cases,indicating that the model is *** Liver metastases after colorectal cancer surgery could be well predicted by a nomogram based on the SII,cAR,and RDW.

关键词： Systemic immunoinflammatory index c-reactive protein/albumin ratio Erythrocyte distribution width colon cancer Liver metastasis Novel nomogram model