检索结果-南通市图书馆

Regulated reaction pathway of CO_(2)photoreduction into CH_(4)by metal atom pair sites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第9期43卷 4620-4627页

作者： Dong-Po He Guang-Bing Huang Jun Hu Yang Wu Xiao-Dong Li Qing-Xia Chen Shan Zhu wen-Sheng Yan Jun-Fa Zhu Yang pan Xing-Chen Jiao Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China Hefei National Research Center for Physical Sciences at Microscale National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China Max Planck Institute of Microstructure Physics Weinberg 206120 HalleGermany State Grid Anhui Electric Power Research Institute Hefei 230601China

The carbon dioxide(CO_(2))reduction process involves complex protonation,making the resulting product often *** achieve the desired product,it is crucial to manipulate the reaction ***,we build the metal atom pair sites for selective CO_(2)photoreduction into *** a prototype,Ni atom pair sites loaded on the Mo S_(2)nanosheets were synthesized and verified by highresolution transmission electron microscopy(HRTEM),X-ray photoelectron spectroscopy(XPS)and X-rayabsorption near edge structure spectra(XANES).In-situ Fourier transform infrared spectroscopy(FTIR)monitors the*CHO group,a crucial intermediate in CH_(4)production,during CO_(2)photoreduction on the Ni-Mo S_(2)nanosheets,whereas this monitoring is not observed for the Mo S_(2)***,theoretical calculations disclose that over the Ni-Mo S_(2)nanosheet slab,the formation energy of*CHO intermediates is determined to be lower(0.585 e V)than the desorption energy of*CO intermediates for CO production(0.64 e V),implying the higher selectivity of CH_(4)production.

关键词： steps dioxide desired

维普期刊数据库

Mechanisms of liver injuries caused by traditional Chinese medicines

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & pancreatic Diseases International 2024年第3期23卷 310-312页

作者： Shui-Fang Jin Qi pan Jin-Peng Zhou Xiao-Ping pan Intensive Care Unit The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Chinese Medicine)Hangzhou 310006China Institute of Liver Diseases College of Basic Medical SciencesZhejiang Chinese Medical UniversityHangzhou 310053China The Second Clinical Medical College of Zhejiang Chinese Medical University Hangzhou 310056China

Drug-induced liver injury(DILI)is a common adverse drug reaction,which can even result in liver failure[1,2].The Chinese Medical Association issued the Guidelines for the Diagnosis and Treatment of DILI based on the Roussel Uclaf Causality Assessment Method(RUCAM)in 2015[3].A previous study reported that traditional Chinese medicines(TCMs),herbal and dietary supplements,and antituberculosis drugs were the main causes of DILI in China[4].Herb-induced liver injury(HILI)refers to liver injury caused by TCMs,natural drugs,and their related preparations[5].

关键词： drugs tuberculosis TCM

维普期刊数据库

Ultra-compact wavelength multiplexer/demultiplexer based on subwavelength grating-assisted multimode interference coupler by inverse design

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年

作者： wen Jin pan Yu WU Zhengwei ZHANG Ying School of Science， Xi'an Shiyou University Shaanxi Engineering Research Center of Oil and Gas Resource Optical Fiber Detection Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells

Inverse design of on-chip wavelength multiplexer/demultiplexer has attracted significant attention to improve equipment performance and miniaturization. We proposed and demonstrated the ultra-compact 1310/1550 nm wavelength multiplexer/demultiplexer assisted by subwavelength grating （SWG） using particle swarm optimization （PSO） algorithm in silicon-on-insulator （SOI） platform. Through the self-imaging effect of multimode interference （MMI） coupler， the demultiplexing function for 1310 nm and 1550 nm wavelengths is implemented. After that， three parallel SWG-based slots are inserted into the MMI section so that the effective refractive index of the modes can be engineered and thus the beat length can be adjusted. Importantly， these three SWG slots significantly reduce the length of the device， which is much shorter than the length of traditional MMI-based wavelength demultiplexers. Ultimately， by using the PSO algorithm， the equivalent refractive index and width of the SWG in a certain range are optimized to achieve the best performance of the wavelength demultiplexer. It has been verified that the device footprint is only 2×30.68 μm2， and 1dB bandwidths of larger than 120 nm are acquired at 1310 nm and 1550 nm wavelengths. Meanwhile， the transmitted spectrum shows that the insertion loss （IL） values are below 0.47 dB at both wavelengths when the extinction ratios （ER） values are above 12.65 dB. This inverse design approach has been proved to be efficient in increasing bandwidth and reducing device length.

关键词：

CentIER:Accurate centromere identification for plant genomes

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Plant Communications 2024年第10期5卷 12-15页

作者： Dong Xu Jinbao Yang Huaming wen wenle Feng Xiaohui Zhang Xingqi Hui Junyang Yue Yun Xu Fei Chen Weihua pan Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Rubber Research Institute Chinese Academy of Tropical Agricultural ScienceHaikouHainan 571101China School of Computer Science and Technology University of Science and Technology of ChinaHefeiAnhui 230026China College of Informatics Huazhong Agricultural UniversityWuhanHubei 430070China School of Horticulture Anhui Agricultural UniversityHefeiAnhui 230026China Nan Fan College Hainan UniversitySanyaHainan 572000China

Dear Editor,Centromeres,the basis for cell division,offer essential insights into cell dynamics,genome stability,and evolutionary processes(McKinley and Cheeseman,2016).Because of ultra-high complexity,high-quality sequences of centromeric regions have long been difficult to obtain,hindering studies of centromere function,evolution,and variation.

关键词： hinder insight stability

An ensemble and cost-sensitive learning-based root cause diagnosis scheme for wireless networks with spatially imbalanced user data distribution

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第7期67卷 331-332页

作者： Qi WANG Zhiwen pan Nan LIU National Mobile Communications Research Laboratory Southeast University Purple Mountain Laboratories

Root cause diagnosis, a key component of self-healing, plays a vital role in fault management. The spatially imbalanced network key performance indicators (KPIs) reported by users increase the difficulty of identifying root *** [1,2], the image inpainting technique is inspired to address issues caused by sparse reports across the coverage area.

关键词： Wireless networks

Fabrication of amorphous nanoporous ZrO_(2)/SiO_(2) aerogel enabling nonlinear optical properties

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2024年第5期10卷 1109-1116页

作者： Hongwei Chu Mingjie Xu Benxue Liu Zhongben pan Han pan Shengzhi Zhao Dong Xu Dechun Li School of Information Science and Engineering and Key Laboratory of Laser and Infrared System of Ministry of EducationShandong UniversityQingdao266237ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan250100China

Amorphous oxides have unique physicochemical properties with extensive opto-electronic applications such as the thin-film transistor,light-emitting diode backplanes,and supercontinuum *** this contribution,we synthesize the amorphous ZrO_(2)/SiO_(2) nanoporous aerogel with high structural *** the femtosecond excitation laser at 800–1,064 nm,the broadband second harmonic generation is *** nonlinear optical properties of the as-prepared ZrO_(2)/SiO_(2) aerogel are investigated at 1.0μm and 1.5μm for the first ***,the amorphous ZrO_(2)/SiO_(2) saturable absorber is originally applied in the Yb-doped and Er-doped fiber lasers to realize the mode-locking *** the Yb-doped fiber laser,the dissipative soliton resonance mode-locking operation is demonstrated with the largest pulse duration of 22 ns at a repetition rate of 7.8 MHz and a high signal-to-noise ratio of 64 *** the Er-doped fiber laser,a conventional soliton mod-locking regime is observed with an ultrashort pulse width of 960 fs,a repetition frequency of 6.55 MHz,and a time-bandwidth production of *** work shows the good ability of the ZrO_(2)/SiO_(2) aerogel in generating ultrafast pulses and extends the saturable absorber into the amorphous material realm.

关键词： ZrO_(2)/SiO_(2)aerogel Nonlinear optical properties Second harmonic generation Dissipative soliton resonance Soliton mode-locking

Aggressive fibromatosis of the sigmoid colon:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第8期16卷 3716-3722页

作者： pan-pan Yu Xin-Chun Liu Lu Yin Guang Yin Department of Gastrointestinal and Anal Surgery The Affiliated Hangzhou First People's HospitalSchool of MedicineWestlake UniversityHangzhou 310006Zhejiang ProvinceChina Department of Gastric Surgery Zhejiang Cancer HospitalHangzhou 310022Zhejiang ProvinceChina Department of Pathology The Affiliated Hangzhou First People's HospitalSchool of MedicineWestlake UniversityHangzhou 310006Zhejiang ProvinceChina

BACKGROUND Aggressive fibromatosis(AF),also known as desmoid tumor or desmoid-type fibromatosis,is a rare soft tissue neoplasm that can occur in almost any part of the *** it is a benign disease,AF is aggressive and infiltrative and has a high recurrence rate after *** sites for intra-abdominal AF are the small bowel mesentery,retroperitoneum,and *** in the colon is extremely *** SUMMARY Here,we report the first case of sigmoid colon AF,which was accidentally discovered in a 27-year-old woman during laparoscopic *** tomography confirmed a slightly enhanced mass in the sigmoid *** colonoscopy did not reveal a mass in the colonic lumen,but a suspected external compress was found in the sigmoid *** disease involving a gastrointestinal stromal tumor was *** patient underwent laparoscopic exploration,and sigmoidectomy with a negative margin was performed to excise the *** immunohistochemistry revealed that the mass was an *** patient recovered well and was recurrence-free at the 30-month follow-up without adjuvant *** AF should be considered in the differential diagnosis of subepithelial colon *** resection alone can achieve good outcomes.

关键词： Aggressive fibromatosis Desmoid tumor Sigmoid mass Subepithelial tumor Case report

Achieving high strength and rapid degradation in Mg-Gd-Ni alloys by regulating LPSO phase morphology combined with extrusion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第6期12卷 2312-2326页

作者： Kai Ma Jingfeng Wang Yinhong Peng Chaoneng Dai Yuanlang pan Ye Wang Danqian Wang Jinxing Wang Yanlong Ma Fusheng pan College of Materials Science and Engineering Chongqing UniversityChongqing 400044PR China National Engineering Research Center for Magnesium Alloys Chongqing 400044PR China College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331PR China College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054PR China

In this study,Mg-13.2Gd-4.3Ni alloys containing continuous bulk-shaped long-period stacking ordered(LPSO),lamellar LPSO,and a small amount of eutectic phase were prepared,and the evolution of microstructure at different extrusion temperatures and its influence on mechanical and degradation properties as well as corrosion mechanism were *** before extrusion can effectively promote the precipitation of lamellar LPSO in ***400 with higher volume fraction of non-DRXed grains exhibited higher strength,which was mainly due to strong texture,high dislocation density,and high volume fraction of lamellar *** EX420 with higher volume fraction of DRXed grains showed higher degradation rate,which was mainly due to the higher density of grain *** EX400 exhibited excellent comprehensive properties with tensile yield strength(TYS)of 334 MPa,ultimate tensile strength(UTS)of 484 MPa and elongation(EL)of 7.4%,ultimate compressive strength(UCS)of 638 MPa and compressive yield strength(CYS)of 443 MPa,degradation rate of 86.1 mg/cm^(2)/h at 93℃in 3 wt.%KCl solution.

关键词： Mg-Gd-Ni alloys LPSO Mechanical properties Degradation rate

维普期刊数据库

Shear strength degradation of gas hydrate-bearing sediment due to partial hydrate dissociation

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第7期16卷 2749-2763页

作者： Yuan Zhou Jiazuo Zhou pan Chen Changfu Wei State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China China University of Geosciences Wuhan430074China

Extraction of methane hydrate from subseafloor reservoir may potentially trigger seabed slides and induce *** address the problems,it is crucial to properly characterize the phase equilibrium condition of pore hydrate and the shear strength of the *** one of the key constitutive components,the phase equilibrium condition enforces a constraint over pore gas pressure,temperature and unhydrated water *** a constraint,however,has been traditionally ignored in analyzing the mechanical behavior of hydrate-bearing *** this paper,a series of stepwise hydrate dissociation tests was performed,and the phase equilibrium condition of pore hydrate was determined,providing an effective way to evaluate the unhydrated water content during hydrate ***,a series of direct shear tests was also conducted to explore the shear strength characteristics of the *** is shown that the shear strength of the hydrate-bearing soil can be significantly influenced by pore gas pressure,unhydrated water content,hydrate saturation and several other *** particular,the measured shear strength depends upon the initial water content of the sample,pointing to a potential problem that the shear strength could be wrongly determined if not properly interpreted.A shear strength criterion,which enforces the equilibrium condition of pore hydrate,is developed for hydrate-bearing soil,establishing a link between the equilibrium condition and the shear *** proposed equation describes well the shear strength characteristics of hydrate-bearing soils,remarkably unifying the effects of pore pressure,temperature,water content and hydrate saturation.

关键词： Hydrate-bearing soil Phase equilibrium condition Shear strength Unhydrated water content Mechanical behavior