检索结果-南通市图书馆

Composition characterization and transformation mechanism of dissolved organic phosphorus in wastewater treatment using 31P NMR spectroscopy

引用

Frontiers of Environmental Science & Engineering 2024年第3期18卷 103-113页

作者： Yuting Zhang Wei Shang SoonThiam Khu Xingcan Zheng Yongli sun Pengfeng Li Miao Gu Wen-an Zhang Huanmei Ma National Engineering Research Center For Urban Water&Wastewater North China Municipal Engineering Design&Research Institute Co.Ltd.Tianjin 300381China School of Environment Science&Engineering Tianjin UniversityTianjin 300350China

The migration and transformation of phosphorus components in wastewater treatment plants(WWTPs)play a crucial role in the convergence and circulation of ***,the composition and variation of dissolved organic phosphorus(DOP)in WWTPs were unclear because of its complex nature,hindering its efficient *** this study,the DOP species and their transformation during the treatment process in WWTP were comprehensively ***,two enrichment methods were assessed for their effectiveness at facilitating wastewater analysis:lyophilization and aluminum salt *** salt precipitation was found to be better because its application allowed 31P nuclear magnetic resonance(31P NMR)spectroscopy to identify more species in the secondary effluent:orthophosphate(Ortho-P)(81.1%–89.3%of the dissolved total phosphorus),pyrophosphates(Pyro-P)(0%–2.3%),orthophosphate monoesters(Mono-P)(7.0%–10.77%),orthophosphate diesters(Di-P)(1.0%–2.96%),and phosphonate(Phos-P)(1.7%–5.16%).Furthermore,the variation and transformation mechanism of phosphorus,particularly those of DOP,during the entire sewage-treatment process were *** the treatment steps,biological treatment combined tertiary treatment achieved better DOP removal ***,biological treatment mainly removed Mono-P and Di-P with removal efficiencies of 33.3%and 41.7%compared with the effluent of the grit ***-P has higher bioavailability and is more easily converted and utilized by microorganisms than ***,Phos-P,with low bioavailability,was hardly utilized by microorganisms,which showed only 18.4%removal efficiency in biological *** tertiary treatment,coagulation process exhibited higher removal ability of Ortho-P(69.1%)and partial removal efficiencies of DOP,resulting in an increase in the DOP proportion in *** addition,Phos-P could not be effectively removed through the biological treatment and was only partially reduced via the adsorption pro

关键词： Municipal wastewater Dissolved organic phosphorus Composition Transformation 31P nuclear magnetic resonance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular quantification of herbs(Herb-q):a pyrosequencingbased approach and its application in Pinellia ternata

引用

Chinese Journal of Natural Medicines 2024年第7期22卷 663-672页

作者： PEI Yifei LIU Ziyi YU Dade ZHANG Xiangyu sun Wei CHEN Xiaofang FENG Xue LI Xiwen Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100700China Bijie Institute of Traditional Chinese Medicine Bijie 551700China The Key Laboratory for Health Industry of Bijie Bijie Medical CollegeBijie 551700China

Variations in herb dosage due to species adulteration and dosing inaccuracies can substantially affect clinical safety and *** species quantification remains challenging,as current methods often yield inconsistent *** study introduces a novel pyrosequencing-based technique,termed herb molecular quantification(Herb-q),designed to precisely quantify herbal *** evaluated its effectiveness using Pinellia ternata and five of its ***,we assessed commonly used DNA barcodes with sequences from a public database,identifying two candidate regions,Maturase K(matK)and internal transcribed spacer 2(ITS2),for screening specific single nucleotide polymorphism(SNP)loci,allowing for species-specific *** loci were validated by amplifying and sequencing genomic material from collected *** validation studies showed that Herb-q demonstrated excellent linearity,accuracy,repeatability,and detection *** established quantitative standard curves with high R^(2)values(>0.99)to enable precise species quantification,which were combined with external standards to provide clear and accurate visual quantification *** average bias in quantifying the tuber of *** was 2.38%,confirming that Herb-q can accurately identify and quantify herbal product ***,the entire quantification process took less than 4 *** study presents a novel,rapid method for accurately quantifying species in herbal products and advances the application of DNA barcoding from species identification to quantitative detection.

关键词： quantification Adulterant DNA barcodes Single nucleotide polymorphism

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adrenal pheochromocytoma impacts three main pathways: cysteine-methionine, pyrimidine, and tyrosine metabolism

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第5期25卷 410-421页

作者： Chong LAI qingling YANG Yunuo ZHANG Renjie GONG Majie WANG Jiankang LI Maode LAI qingrong sun Department of Urology the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China School of Basic Medical Sciences and Clinical Pharmacy China Pharmaceutical UniversityNanjing 210009China Department of Laboratory Medicine the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Laboratory of Behavioral Neuroscience Ningbo Kangning HospitalNingbo Institute of Microcirculation and HenbaneSchool of MedicineNingbo UniversityNingbo 315201China Xi'an Key Laboratory of Stem Celland Regenerative Medicine Institute of Medical ResearchNorthwestern Polytechnical UniversityXi'an 710072China Department of Pathology Research Unit of Intelligence Classification of Tumor Pathology and Precision TherapyChinese Academy of Medical Sciences Key Laboratory of Disease Proteomics of Zhejiang ProvinceZhejiang University School of MedicineHangzhou 310058China

Pheochromocytomas and paragangliomas(PPGLs)cause symptoms by altering the circulation levels of catecholamines and peptide ***,the diagnosis of PPGLs relies on diagnostic imaging and the detection of *** this study,we used ultra-performance liquid chromatography(UPLC)/quadrupole time-of-flight mass spectrometry(q-TOF MS)analysis to identify and measure the perioperative differential metabolites in the plasma of adrenal pheochromocytoma *** identified differentially expressed genes by comparing the transcriptomic data of pheochromocytoma with the normal adrenal *** conducting two steps of metabolomics analysis,we identified 111 differential metabolites between the healthy group and the patient group,among which 53 metabolites were *** integrating the information of differential metabolites and differentially expressed genes,we inferred that the cysteine-methionine,pyrimidine,and tyrosine metabolism pathways were the three main metabolic pathways altered by the *** analysis of transcription levels revealed that the tyrosine and cysteine-methionine metabolism pathways were downregulated in pheochromocytoma,whereas the pyrimidine pathway showed no significant ***,we developed an optimized diagnostic model of two metabolites,L-dihydroorotic acid and *** results for these metabolites suggest that they may serve as potential clinical biomarkers and can be used to supplement and improve the diagnosis of pheochromocytoma.

关键词： Pheochromocytoma and paraganglioma(PPGL) Metabolomics Gene set variation analysis L-Dihydroorotic acid Vanylglycol

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of Fe_(2)O_(3)on the Structure,Physical Properties and Crystallization of CaO-Al_(2)O_(3)-SiO_(2)Glass

引用

Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 954-961页

作者：张峰 XIONG Dehua 谢俊张继红 HAN Jianjun CHEN Dequan WEN Zhongquan FAN Zhenhua CHEN Lina sun Tengfei State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Hepu Research Center for Silicate Materials Industry Technology Beihai 536100China Hainan Institute of Wuhan University of Technology Sanya 430079China Shenzhen Research Institute of Wuhan University of Technology Shenzhen 518000China Chongqing Polycomp Inter-national Corporation Chongqing 400400China

The calcium aluminosilicate-based glasses(CaO-Al_(2)O_(3)-SiO_(2),CAS)with different Fe_(2)O_(3)content(0.10wt%,0.50wt%,0.90wt%,and 1.30wt%)were prepared by traditional melt-quenching *** glass network structure,thermal and mechanical properties,and crystallization behavior changes were investigated by nuclear magnetic resonance spectrometer,Fourier-transform infrared spectro-photometer,X-ray diffractometer,differential scanning calorimetry and field emission scanning electron microscope *** change of q^(n)in glass structures reveals the glass network connectivity decreases due to the increasing content of Fe_(2)O_(3)addition,resulting in the increasing of non-bridging number in glass *** glass densities slightly rise from 2.644 to 2.681 g/cm^(3),while Vickers’s hardness increases at first,from 6.469 to 6.901 GPa,then slightly drops to 6.745 GPa,with Fe_(2)O_(3)content *** is almost no thermal expansion coefficient change from different Fe_(2)O_(3)*** glass transmittance in visible range gradually decreases with higher Fe_(2)O_(3)content,resulting from the strong absorption of Fe^(2+)and Fe^(3+)*** calculated activation energy from thermal analysis results first decreases from 282.70 to 231.18 kJ/mol,and then increases to 244.02 kJ/mol,with the Fe_(2)O_(3)content increasing from 0.10wt%to 1.30wt%.Meanwhile,the maximum Avrami constant of 2.33 means the CAS glasses exhibit two-dimensional *** of the CAS glass-ceramics samples contain main crystal phase of anorthite,the microstructure appears lamellar and columnar crystals.

关键词： calcium aluminosilicate glass network structure physical properties crystallization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Thermal comfort in a building with Trombe wall integrated with phase change materials in hot summer and cold winter region without air conditioning

引用

Energy and Built Environment 2024年第1期5卷 58-69页

作者： Jie Li Yuan Zhang Ziyang Zhu Jiangtian Zhu Jing Luo Fen Peng Xiaoqin sun School of Energy and Power Engineering Changsha University of Science and TechnologyChangshaHunan 410114PR China

Trombe wall and phase change materials(PCMs)are two effective ways to regulate indoor thermal ***,Trombe wall surfers from overheating in summer and PCMs suffer from low heat transfer rate caused by the limited thermal *** compensate the shortcomings of the two methods,this paper proposed a Trombe wall system integrated with *** on a light-weight building envelope in Changsha,China,the thermal comfort of 10 kinds of Trombe wall systems with PCMs with a melting temperature of 18-28℃ were *** the integrated indoor discomfort duration(I_(D)),integrated indoor discomfort degree-hour(I_(DH)),indoor air temperature(T_(in)),PCM liquid fraction(γ)and heat flux across wall(q)as evaluation indexes,the indoor thermal comfort was assessed in hot summer and cold winter *** show that the Trombe wall helped PCMs complete the phase change process *** wall with PCM25 next to the wall inner surface possessed the lowest annual I_(D) and I_(DH),as 2877 h and 12,974℃·h,*** with the values in a traditional building,the I_(D) and I_(DH) were reduced by 7.01% and 14.14%.In order to give full play to the heat storage and heat release of the Trombe wall with PCMs,PCMs with phase change temperature 7℃ lower than the peak ambient temperature in summer or 8℃ higher than the winter night temperature was recommended according to regional climate conditions.

关键词： Trombe wall Phase change materials Integrated indoor discomfort duration Integrated discomfort degree-hour Liquid fraction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Entropy consistency-based adaptive sampling method for determining the scale effect in the joint roughness coefficient

引用

Journal of Earth Science 2024年

作者： Jibo qin Jun Ye Xiaoming sun Shigui Du State Key Laboratory for Tunnel Engineering， China University of Mining and Technology-Beijing School of Mechanics and Civil Engineering， China University of Mining and Technology-Beijing Institute of Rock Mechanics， Ningbo University

The joint roughness coefficient （JRC） is one of the key parameters for evaluating the shear strength of rock joints. Because of the scale effect in the JRC， reliable JRC values are of great importance for most rock engineering projects. During the collection process of JRC samples， the redundancy or insufficiency of representative rock joint surface topography （RJST） information in serial length JRC samples is the essential reason that affects the reliability of the scale effect results. Therefore， this paper proposes an adaptive sampling method， in which we use the entropy consistency measure q（a） to evaluate the consistency of the joint morphology information contained in adjacent JRC samples. Then the sampling interval is automatically adjusted according to the threshold q(at) of the entropy consistency measure to ensure that the degree of change of RJST information between JRC samples is the same， and ultimately makes the representative RJST information in the collected JRC samples more balanced. The application results of actual cases show that the proposed method can obtain the scale effect in the JRC efficiently and reliably.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species

引用

SusMat 2024年第2期4卷 51-74页

作者： Zheng Zhang Danyang Li Yunchuan Tu Jiao Deng Huiting Bi Yongchao Yao Yan Wang Tingshuai Li Yongsong Luo Shengjun sun Dongdong Zheng Sónia A.C.Carabineiro Zhou Chen Junjiang Zhu Xuping sun Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing&Finishing College of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhanHubeiChina School of Chemistry and Chemical Engineering Chongqing UniversityChongqingChina i-Lab Vacuum Interconnected NanotechWorkstation(Nano-X)Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouJiangsuChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduSichuanChina College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinanShandongChina LAqV-REqUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de Lisboa2829-516 CaparicaPortugal College of Materials Xiamen UniversityXiamenFujianChina

The electrocatalytic synthesis of C-N coupling compounds from CO_(2) and nitrogenous species not only offers an effective avenue to achieve carbon neutral-ity and reduce environmental pollution,but also establishes a route to synthesize valuable chemicals,such as urea,amide,and *** innovative approach expands the application range and product categories beyond simple carbona-ceous species in electrocatalytic CO_(2) reduction,which is becoming a rapidly advancing *** review summarizes the research progress in electrocatalytic urea synthesis,using N_(2),NO_(2)^(-),and NO_(3)^(-)as nitrogenous species,and explores emerging trends in the electrosynthesis of amide and amine from CO_(2) and nitro-gen ***,the future opportunities in this field are highlighted,including electrosynthesis of amino acids and other compounds containing C-N bonds,anodic C-N coupling reactions beyond water oxidation,and the catalytic mechanism of corresponding *** critical review also captures the insights aimed at accelerating the development of electrochemical C-N coupling reactions,confirming the superiority of this electrochemical method over the traditional techniques.

关键词： C-N coupling CO_(2) reduction electrocatalysis nitrogenous species reaction mechanism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

HPLC Fingerprint Combined with Chemometrics and Network Pharmacology for q-Markers Prediction Analysis of Saposhnikovia divaricata

引用

Journal of Analysis and Testing 2024年第1期8卷 83-94页

作者： Renguo Zhang Xinjian Liu Tong Wang Jie Yu Mengyuan Wang Jianmin sun Xueling Yu Na Niu Ligang Chen College of Chemistry Chemical Engineering and Resource UtilizationKey Laboratory of Forest Plant EcologyNortheast Forestry UniversityHarbin 150040China

Saposhnikovia divaricata(SD)has high medicinal and edible value,but relatively little research has been done on its qual-ity markers(q-markers).To further clarify the q-markers of SD with their corresponding pharmacodynamic *** this experiment,14 batches of SD were identified and screened for q-marker candidate components using a combination of HPLC fingerprint with similarity analysis,principal component analysis,hierarchical cluster analysis,and partial least squares discriminant ***,network pharmacology was used to predict q-markers and core *** results showed that 5-O-methylvisammioside,cimifugin,and prim-O-glucosylcimifugin could be used as q-markers of SD;while,MAPK1,MAPK3,PIK3CA,JUN,and MAPK8 were the core targets of SD for drug *** further evaluate the bind-ing efficiency of q-markers,molecular docking of the main active ingredients of SD to the core targets was *** results showed that the compounds bind well to their targets,and binding energies were all less than-5 kcal/*** q-markers obtained from the screening were closely related to the core target genes,which could achieve therapeutic effects by modulating the relevant signaling *** study offers a reference for the establishment of a set of quality control evaluation system for SD potential q-markers prediction analysis,and lays the foundation for elucidating the mechanism of actionunderlying itspharmacodynamic substance.

关键词： Saposhnikovia divaricata q-markers Fingerprint Chemometrics Network pharmacology Molecular docking

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

青藏高原及其周边新近纪综合地层、生物群与古地理演化

引用

中国科学：地球科学 2024年第4期54卷 1343-1378页

作者：邓涛方小敏李强王世骐吴飞翔侯素宽马姣江左其杲孙丹辉郑妍史勤勤孙博阳李录中国科学院古脊椎动物与古人类研究所中国科学院脊椎动物演化与人类起源重点实验室北京100044 中国科学院生物演化与环境卓越创新中心北京100044 中国科学院大学地球与行星科学学院北京100049 中国科学院青藏高原研究所中国科学院青藏高原地球科学卓越创新中心北京100101 北京大学地球与空间科学学院造山带与地壳演化教育部重点实验室北京100871

青藏高原在新近纪的显著隆升对东亚乃至全球的气候环境产生了巨大的影响,因此,建立青藏高原新近纪地层框架对地球科学各领域的研究都有重要的意义.国际新近纪年代地层系统以海相为标准,分为中新统的6个阶和上新统的2个阶.新生代以来,陆... 详细信息

青藏高原在新近纪的显著隆升对东亚乃至全球的气候环境产生了巨大的影响,因此,建立青藏高原新近纪地层框架对地球科学各领域的研究都有重要的意义.国际新近纪年代地层系统以海相为标准,分为中新统的6个阶和上新统的2个阶.新生代以来,陆相地层在陆地上所占的比例迅速增加,到新近纪时已远远超过海相地层,在青藏高原及其周边地区几乎全部为陆相地层.中国的中新统包括5个阶,上新统包括2个阶,除中中新统的通古尔阶以15Ma为底界外,其余各阶都与对应的国际海相阶具有相同的古地磁定义和时限.哺乳动物化石在新生代陆相地层的划分对比中占有非常重要的地位,在新近系尤其倚重于啮齿类、食肉类、长鼻类、奇蹄类和偶蹄类化石.青藏高原有不少地层出露好且富含哺乳动物化石的盆地,新近系谢家阶和灞河阶的底界层型剖面分别位于西宁盆地和临夏盆地,并有精细的古地磁定年与哺乳动物化石相互配合,其余各阶的底界在青藏高原也可以有效确定.东亚地区许多哺乳动物首现属出现在青藏高原及其周边地区,在东北缘的临夏盆地和西南缘的西瓦立克地区尤为典型,其中,西瓦立克的原恐象Prodeinotherium首现于中新统底界,旧大陆最早的三趾马Hipparion首现于临夏盆地的灞河阶底界.对青藏高原及其周缘地区新生代沉积物及其所含的哺乳动物化石进行的牙釉质和古土壤碳氧同位素分析重建了气候环境背景及植被发育特征,发现其既与全球变化相关,又有地区性的特点.根据碳同位素变化得到的晚中新世C4植物扩张事件证据来自于青藏高原南缘,但形成鲜明对比的是,多个食草哺乳动物类群和古土壤碳酸盐及有机质的δ13C指示在青藏高原北缘直到新近纪末期仍然缺少明确或显著的C4植物信号.δ^(18)O分析显示在新生代存在几次重大的气候变化事件,尤其是晚中新世末期约7Ma的δ^(18)O正漂指示了青藏高原南北两侧向更干旱环境的转变.青藏高原在晚中新世的强烈隆升强化了海陆热力对比,由此加强了季风环流并导致C4植被在南亚扩张,但能够为中国北方带来大气降水和C4植物适宜气候的东亚夏季风还不足以影响到青藏高原北部地区.青藏高原在中新世整体上已上升至海拔3000m左右,成为阻碍大型哺乳动物交流的屏障;至上新世达到4000m以上的现代海拔高度,由此形成冰冻圈环境,导致冰期动物群祖先类型出现.

关键词：青藏高原新近系陆相地层哺乳动物化石古地磁

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Large contributions of emission reductions and meteorological conditions to the abatement of PM_(2.5)in Beijing during the 24th Winter Olympic Games in 2022

引用

Journal of Environmental Sciences 2024年第2期136卷 172-188页

作者： Yaping Jiang Shaocai Yu Xue Chen Yibo Zhang Mengying Li Zhen Li Zhe Song Pengfei Li Xiaoye Zhang Eric Lichtfouse daniel Rosenfeld Key Laboratory of Environmental Remediation and Ecological Health Ministry of EducationResearch Center for Air Pollution and HealthCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China College of Science and Technology Hebei Agricultural UniversityBaoding 071000China Chinese Academy of Meteorological Sciences China Meteorological AdministrationBeijing 100081China Aix-Marseille Univ CNRSColl FranceCNRSIRDINRAEEuropole Mediterraneen de l’ArboisAvenue Louis Philibert13100 Aix en ProvenceFrance Xi’an Jiaotong University State Key Laboratory of Multiphase Flow in Power EngineeringXi’an 710049China Institute of Earth Sciences The Hebrew University of JerusalemJerusalemIsrael

To guarantee the blue skies for the 2022 Winter Olympics held in Beijing and Zhangjiakou from February 4 to 20,Beijing and its surrounding areas adopted a series of emission control *** provides an opportunity to determine the impacts of large-scale temporary control measures on the air quality in Beijing during this special ***,we applied the WRF-CMAq model to quantify the contributions of emission reduction measures and meteorological *** show that meteorological conditions in 2022 decreased PM_(2.5)in Beijing by 6.9 and 11.8μg/m^(3)relative to 2021 under the scenarios with and without emission reductions,*** emission reduction measures implemented in Beijing and seven neighboring provinces resulted in an average decrease of 13.0μg/m^(3)(-41.2%)in PM_(2.5)in *** the entire period,local emission reductions contributed more to good air quality in Beijing than nonlocal emission *** the emission reduction scenario,local,controlled regions,other regions,and boundary conditions contributed 47.7%,42.0%,5.3%,and 5.0%to the PM_(2.5)concentrations in Beijing,*** results indicate that during the cleaning period with the air masses from the northwest,the abatements of PM_(2.5)were mainly caused by local emission ***,during the potential pollution period with the air masses from the east-northeast and west-southwest,the abatements of PM_(2.5)were caused by both local and nonlocal emission reductions almost *** implies that regional coordinated prevention and control strategies need to be arranged scientifically and rationally when heavy pollution events are forecasted.

关键词： PM_(2.5) WRF-CMAq Meteorological conditions Emission reductions Winter Olympic games

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：