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Superatom-assembled boranes,carboranes,and low-dimensional boron nanomaterials based on aromatic icosahedral B_(12)and C_(2)B_(10)

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Nano Research 2024年第7期17卷 6734-6740页

作者： qiao-qiao yan yan-Fang Wei Qiang Chen Yue-Wen Mu Si-Dian Li Institute of Molecular Science Shanxi UniversityTaiyuan 030006China

Using the experimentally known aromatic icosahedral superatoms I_(h)B_(12)H_(12)2−and D_(5d)1,12-C_(2)B_(10)H_(12)as building blocks and based on extensive density functional theory calculations,we predict herein a series of core–shell superpolyhedral boranes and carboranes in a bottom-up approach,including the high-symmetry Th B_(12)@B_(152)H_(72)2−(2),C2h C_(2)B_(10)@B_(152)H_(72)(3),D_(3d)B_(12)@B_(144)H_(66)(4),I_(h)B_(12)@C_(24)B_(12)0H_(72)2−(6),and D_(5d)C_(2)B_(10)@C_(24)B_(12)0H_(72)(7).More interestingly,the superatom-assembled linear D2h B_(36)H_(32)^(2−)(8),close-packed planar D_(3d)B_(84)H_(60)^(2−)(10),and nearly close-packed core−shell D_(3d)B_(12)@B144H_(6)6(4)can be extended periodically to form the one-dimensional(1D)α-rhombohedral borane nanowire B_(12)H_(10)(Pmmm)(9),two-dimensional(2D)α-rhombohedral monolayer borophane B_(12)H_(6)(P m1)(11),and the experimentally known three-dimensional(3D)α-rhombohedral boron(R m)(12)which can be viewed as an assembly of the monolayer B_(12)H_(6)(11)staggered in vertical direction,setting up a bottom-up strategy to form low-dimensional boron-based nanomaterials from their borane“seeds”via partial or complete *** bonding analyses indicate that the high stability of these nanostructures originates from the spherical aromaticity of their icosahedral B_(12)or C_(2)B_(10)structural units which possess the universal skeleton electronic configuration of 1S21P61D101F8 following the Wade’s n+1 *** infrared(IR)and Raman spectra of the most-concerned neutral B_(12)@B144H_(6)6(4)and C_(2)B_(10)@C_(24)B_(12)0H_(72)(7)are computationally simulated to facilitate their experimental characterizations.

关键词： superatom-assembling bottom-up approach density functional theory superpolyhedral boranes superpolyhedral carboranes borophanes

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Thermal noise-driven resonant sensors

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Microsystems & Nanoengineering 2024年第3期10卷 259-271页

作者： yan qiao Alaaeldin Elhady Mohamed Arabi Eihab Abdel-Rahman Wenming Zhang School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghaiChina Department of Systems Design Engineering University of WaterlooWaterlooONCanada

MEMS/NEMS resonant sensors hold promise for minute mass and force ***,one major challenge is that conventional externally driven sensors inevitably encounter undesired intrinsic noise,which imposes a fundamental limitation upon their signal-to-noise ratio(SNR)and,consequently,the ***,this restriction becomes increasingly pronounced as sensors shrink to the *** this work,we propose a counterintuitive paradigm shift that turns intrinsic thermal noise from an impediment to a constituent of the sensor by harvesting it as the driving force,obviating the need for external actuation and realizing‘noise-driven’*** sensors employ the dynamically amplified response to thermal noise at resonances for stimulus *** demonstrate that lightly damped and highly compliant nano-structures with high aspect ratios are promising candidates for this class of *** overcome the phase incoherence of the drive force,three noise-enabled quantitative sensing mechanisms are *** validated our sensor paradigm by experimental demonstrating noise-driven pressure and temperature ***-driven sensors offer a new opportunity for delivering practical NEMS sensors that can function at room temperature and under ambient pressure,and a development that suggests a path to cheaper,simpler,and low-power-consumption sensors.

关键词： noise resonant overcome

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Furfural residues derived nitrogen-sulfur co-doped sheet-like carbon: An excellent electrode for dual carbon lithium-ion capacitors

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Green Energy & Environment 2024年第9期9卷 1427-1439页

作者： Xiaoying Guo yan qiao Zonglin Yi Christian Marcus Pedersen Yingxiong Wang Xiaodong Tian Peide Han College of Materials Science and Engineering Taiyuan University of Technology State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences CAS Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Department of Chemistry University of Copenhagen Universitetsparken 5 College of Chemistry Taiyuan University of Technology

The state-of-the-art lithium-ion capacitors （LICs）,consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with traditional supercapacitors and lithium-ion batteries,***,the ion kinetics mismatch between cathode and anode leads to unsatisfied cycling lifetime and anode *** efforts have been devoted to solving the abovementioned *** promising strategy is altering high conductive hard carbon anode with excellent structural stability to match with activated carbon cathode,assembling dual-carbon *** this contribution,one-pot in-situ expansion and heteroatom doping strategy was adopted to prepare sheet-like hard carbon,while activated carbon was obtained involving *** persulfate was used as expanding and doping agent *** furfural residues （FR） were served as carbon *** resulting hard carbon （FRNS-HC） and activated carbon （FRNS-AC）show excellent electrochemical performance as negative and positive electrodes in a lithium-ion battery （LIB）.To be specific,374.2 m Ah g-1and 123.1 m Ah g-1can be achieved at 0.1 A g-1and 5 A g-1when FRNS-HC was tested as *** combined with a highly porous carbon cathode (SBET=2961 m2g-1) synthesized from the same precursor,the LIC showed high specific energy of147.67 Wh kg-1at approximately 199.93 W kg-1,and outstanding cycling life with negligible capacitance fading over 1000 *** study could lead the way for the development of heteroatom-doped porous carbon nanomaterials applied to Li-based energy storage applications.

关键词： Furfural residue Ammonium persulfate Sheet-like carbon Lithium-ion capacitors Hard carbon

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Research on Hepatocyte Regulation of PCSK9-LDLR and Its Related Drug Targets

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Chinese Journal of Integrative Medicine 2024年第7期30卷 664-672页

作者： LIU Su-su YU Tong qiao yan-fang GU Shu-xiao CHAI Xin-lou School of Traditional Chinese Medicine Beijing University of Traditional Chinese MedicineBeijing102401China

The prevalence of hyperlipidemia has increased significantly due to genetic, dietary, nutritional and pharmacological factors, and has become one of the most common pathological conditions in humans. Hyperlipidemia can lead to a range of diseases such as atherosclerosis, stroke, coronary heart disease, myocardial infarction, diabetes, and kidney failure, etc. High circulating low-density lipoprotein cholesterol (LDL-C) is one of the causes of hyperlipidemia. LDL-C in the blood binds to LDL receptor (LDLR) and regulates cholesterol homeostasis through endocytosis. In contrast, proprotein convertase subtilisin/kexin type 9 (PCSK9) mediates LDLR degradation via the intracellular and extracellular pathways, leading to hyperlipidemia. Targeting PCSK9-synthesizing transcription factors and downstream molecules are important for development of new lipid-lowering drugs. Clinical trials regarding PCSK9 inhibitors have demonstrated a reduction in atherosclerotic cardiovascular disease events. The purpose of this review was to explore the target and mechanism of intracellular and extracellular pathways in degradation of LDLR and related drugs by PCSK9 in order to open up a new pathway for the development of new lipid-lowering drugs.

关键词： hyperlipidemia proprotein convertase subtilisin/kexin type 9 low-density lipoprotein receptor intracellular pathway extracellular pathway

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Qualitative analysis of aromatic compounds via 1D TOCSY techniques

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Magnetic Resonance Letters 2024年第1期4卷 21-27页

作者： Wenbo Dong Qi Zhao Jiancheng Zhao Jiarong Zhang Yingxiong Wang yan qiao State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Graduate University of Chinese Academy of Sciences Beijing100049China Marine Biomedical Research Institution Guangdong Medical UniversityZhanjiang524023China College of Chemistry Taiyuan University of Technology79 Yingze West StreetWanbailin DistrictTaiyuan030024China

The aromatic compounds,including o-xylene,m-xylene,p-xylene,and ethylbenzene,primarily originate from the catalytic reforming of crude oil,and have a wide variety of ap***,because of similar physical and chemical properties,these compounds are difficult to be identified by gas chromatography(GC)without standard *** the development of modern nuclear magnetic resonance(NMR)techniques,NMR has emerged as a powerful and efficient tool for the rapid analysis of complex and crude mixtures without *** this study,the parameters of one-dimensional(1D)total correlation spectroscopy(TOCSY)NMR techniques,including 1D selective gradient TOCSY and 1D chemicalshift-selective filtration(CSSF)with TOCSY,were optimized to obtain comprehensive molecular structure *** results indicate that the overlapped signals in NMR spectra of nonpolar aromatic compounds(including o-xylene,m-xylene,p-xylene and ethylbenzene),polar aromatic compounds(benzyl alcohol,benzaldehyde,benzoic acid),and aromatic compounds with additional conjugated bonds(styrene)can be resolved in 1D *** importantly,full molecular structures can be clearly distinguished by setting appropriate mixing time in 1D *** approach simplifies the NMR spectra,provides structural information of entire molecules,and can be applied for the analysis of other structural isomers.

关键词： 1D TOCSY NMR technologies Xylenes Aromatic compounds Structure information of entire molecular Qualitative analysis

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Rhodium-catalyzed enantioselective in situ C（sp3）-H heteroarylation by a desymmetrization approach

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Chinese Chemical Letters 2024年第10期35卷 244-248页

作者： Yujia Shi yan qiao Pengfei Xie Miaomiao Tian Xingwei Li Junbiao Chang Bingxian Liu State Key Laboratory of Antiviral Drugs NMPA Key Laboratory for Research and Evaluation of Innovative Drug School of Chemistry and Chemical Engineering Henan Normal UniversityPingyuan Laboratory Department of Pathophysiology School of Basic Medical Sciences Zhengzhou University

A rhodium-catalyzed desymmetrization reaction for enantioselective methyl C-H arylation is achieved by utilizing an in situ arylating reagent via nucleophilic cyclization of o-aminoaryl alkyne. The reaction results in chiral indoles containing all-carbon quaternary stereocenters under atmospheric conditions, with a wide range of substrates exhibiting good enantioselectivity(44 examples). Mechnism and DFT studies show that the stereocontrol is reasonably achieved through the collaborative control of a large silicon substituted chiral ligand and C-H···π, LP···π interactions between aryl rings of the carboxylate group and the substrate. Control experiments demonstrate that Rh-aryl bond formation via in situ nucleophilic cyclization is more critical for reaction efficiency than via C-H activation of the nucleophilic cyclization byproduct.

关键词： C(sp3)−H activation Desymmetrization Enantioselective Heteroarylation π Interactions

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Effect of lens surgery on health-related quality of life in preschool children with congenital ectopia lentis

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 66-72页

作者： yan-qiao Huang Qian-Zhong Cao Yi-Yao Wang Yi-Jing Zhou Dan-Ying Zheng State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangdong Provincial Key Laboratory of Ophthalmology and Visual ScienceGuangdong Provincial Clinical Research Center for Ocular DiseasesGuangzhou 510060Guangdong ProvinceChina

AIM:To evaluate the effect of lens surgery on health-related quality of life(HRQoL)of preschool children with congenital ectopia lentis(CEL).METHODS:A prospective self-controlled study was conducted in Zhongshan Ophthalmic *** aged from 5 to 7y whom were diagnosed with CEL and underwent phacoemulsification with scleral-fixated posterior chamber intraocular lens implantation and their parents were enrolled in this *** of them completed the child and proxy(parental)PedsQL™4.0 before and after the *** preoperative scores were compared to their postoperative *** analyses were performed based on gender and preoperative bilateral presenting visual acuity of the ***:Thirty-two children with CEL successfully underwent surgery without any complications,among whom 8 had monocular surgery and 24 had binocular *** and postoperative questionnaires were completed by 32 child-parent *** intervention could significantly improve the vision of affected children(P<0.001).The medians of physical,psychosocial and total health scores self-reported by the children were 68.75(62.50,81.25),65.00(60.00,80.00)and 67.39(60.87,78.26)preoperatively and were 93.75(87.50,100.00),90.00(83.33,96.67)and 89.13(85.32,95.65)*** preoperative scores of the affected children were significantly lower in all scales than age-matched healthy children(P<0.001).All the postoperative scores were significantly higher than the preoperative scores in affected children and their parents(P<0.001).In the physical functioning evaluation,the preoperative score reported by parents of girls was higher than parents of boys(P=0.041),and the postoperative score of girls was higher than that of boys(P=0.036).CONCLUSION:CEL is associated with significantly worse quality of life in preschool *** intervention can significantly improve the HRQoL in affected children from both personal and family perspective.

关键词： congenital ectopia lentis surgical intervention health-related quality of life preschool children

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基于LSTM和注意力机制的远程会诊需求预测

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计算机科学 2024年第S1期51卷 1069-1075页

作者：翟运开乔正文乔岩郑州大学管理学院郑州450001 互联网医疗系统与应用国家工程实验室郑州450052 河南省智能健康信息系统国际联合实验室郑州450000

为更准确地预测远程会诊需求量,提高远程会诊资源配置效率,文中引入多元回归分析(Multiple Linear Regression)和注意力机制来优化长短期记忆网络(LSTM)。首先,根据远程会诊需求中存在的假期效应生成假期指标,通过多元回归分析选取显著... 详细信息

为更准确地预测远程会诊需求量,提高远程会诊资源配置效率,文中引入多元回归分析(Multiple Linear Regression)和注意力机制来优化长短期记忆网络(LSTM)。首先,根据远程会诊需求中存在的假期效应生成假期指标,通过多元回归分析选取显著性高的指标作为模型输入,然后根据长短期记忆网络学习输入指标的内部复杂映射关系,利用注意力机制对指标分配不同权重,最后根据权重和LSTM隐藏层输入预测结果。基于国家远程医疗中心(NTCC)的实际历史会诊数据,研究MLR-Attention-LSTM的预测性能,并比较其与整合移动平均自回归模型、支持向量机、K近邻、BP神经网络和LSTM神经网络5种模型的预测效果。结果表明,优化后的LSTM模型预测精度最高。进一步地,探究假期指标对模型性能的影响,结果表明假期指标的输入可以进一步提高模型的预测精度,验证了MLR-Attention-LSTM和假期相关变量输入在远程会诊需求预测领域的可行性与适用性,为远程医学中心实际应用提供了理论支撑和实践指导。

关键词：长短期记忆网络注意力机制远程会诊需求预测假期效应

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Clinical study on the treatment of acute pancreatitis with external application of Yi-Dan Therapy based on the method of“stagnation requiring dispersion”:study protocol for a randomized controlled trial

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Gastroenterology & Hepatology Research 2024年第2期6卷 1-7页

作者： Pei-Xin Ge Bo-Yi Jia Nai-Wei Zhang Li-Bao An qiao-yan Zhang yan-Mei Cai Xiao-Na Zhang Shao-Dong Hao Hong-Jie Cheng Third Affiliated Hospital of Beijing University of Chinese Medicine Beijing100029China Department of Gastrointestinal Disease Fangshan HospitalBeijing University of Chinese MedicineBeijing 102488China.

Background:Acute pancreatitis is an unpredictable and potentially lethal disease,causing tremendous pain in *** initial treatment of acute pancreatitis in modern medicine is supportive,but it is generally ineffective in relieving abdominal pain and *** Chinese medicine has been shown to be more effective in regulating the body’s homeostasis and reducing the clinical symptoms of ***-Dan ointment,derived from Dahuang-Mudan Decoction,is an effective external ointment for treating acute *** aim of this trial is to investigate the clinical efficacy of Yi-Dan ointment,providing a valuable complement to existing treatment options for ***:This is a randomized controlled clinical trial with two parallel *** in the control group were given basic treatment and nursing for 7 days;in the treatment group,Yi-Dan ointment was applied externally in addition to basic treatment and *** main indicator is the overall efficacy,serum amylase,acute physiology and chronic health evaluationⅡscore,symptom score,inflammatory markers,and classification of computed ***:The trial results will provide high-quality evidence for Yi-Dan ointment,and provide a complement to existing treatment options for pancreatitis.

关键词： acute pancreatitis traditional Chinese medicine external treatment Yi-Dan ointment randomized controlled trial

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人工智能技术在电子工程自动化控制系统中的应用

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集成电路应用 2024年第1期41卷 212-213页

作者：乔燕长春市政府电子政务服务中心吉林130200

阐述人工智能技术的特点,人工智能技术在电子工程自动化控制中的具体应用,包括在电子工程设备、电气控制、产品优化、设备诊断中的应用,从而提升电子工程运行效率。

关键词：人工智能技术电子工程自动化控制

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