检索结果-南通市图书馆

Li-promoted C3N4 catalyst for efficient isomerization of glucose into fructose at 50℃ in water

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第9期9卷 1419-1426页

作者： Wang Liu Yanfei Zhang Mengya Sun Xinpeng Zhao Shenggang Li Xinqing Chen Liangshu Zhong Lingzhao kong CAS Key Laboratory of Low-Carbon Conversion science and Engineering Shanghai Advanced Research Institute Chinese Academy of Sciences university of Chinese Academy of sciences School of Physical science and technology Shanghai Tech University School of Environmental science and Engineering Suzhou University of Science and Technology

Efficient and selective glucose-to-fructose isomerization is a crucial step for production of oxygenated chemicals derived from sugars,which is usually catalyzed by base or Lewis acid heterogeneous ***,high yield and selectivity of fructose cannot be simultaneously obtained under mild conditions which hamper the scale of application compared with enzymatic ***,a Li-promoted C3N4catalyst was exploited which afforded an excellent fructose yield （40.3 wt%） and selectivity （99.5%） from glucose in water at 50~oC,attributed to the formation of stable Li–N bond to strengthen the basic sites of ***,the so-formed N6–Li–H2O active site on Li–C3N4catalyst in aqueous phase changes the local electronic structure and strengthens the deprotonation process during glucose isomerization into *** superior catalytic performance which is comparable to biological pathway suggests promising applications of lithium containing heterogeneous catalyst in biomass refinery.

关键词： Glucose Fructose Isomerization Li–C 3 N 4 Density functional theory calculations

The structure of L*-inverse semigroups

在线全文

学校读者我要写书评

暂无评论

science China Mathematics 2006年第8期49卷 1065-1081页

作者： REN Xueming & SHUM Karping Department of Mathematics, Xi’an university of Architecture and technology, Xi’an 710055, China Faculty of science, The Chinese university of Hong kong, Hong kong, China Department of Mathematics Xi'an University of Architecture and Technology Xi'an 710055 China Faculty of science The Chinese University of Hong Kong Hong Kong Hong Kong

The concepts of L*-inverse semigroups and left wreath products of semigroups are introduced. It is shown that the L*-inverse semigroup can be described as the left wreath product of a type A semigroupΓand a left regular band B together with a mapping which maps the semigroupΓinto the endomorphism semigroup End(B). This result generalizes the structure theorem of Yamada for the left inverse semigroups in the class of regular semigroups. We shall also provide a constructed example for the L*-inverse semigroups by using the left wreath products.

关键词： L*-inverse semigroups type A semigroups left regular bands left wreath products.

Spatial compartmentalization and temporal stability of associated microbiota in Pacific oyster Crassostrea gigas

在线全文

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2024年第4期42卷 1348-1358页

作者： Qiang FU Zichao YU Junyan ZHAO Lei GAO Ning kong Lingling WANG Linsheng SONG Liaoning Key Laboratory of Marine Animal Immunology and Disease Control Dalian Ocean UniversityDalian 116023China Functional Laboratory of Marine Fisheries science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Southern Marine science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control Dalian Ocean UniversityDalian 116023China

The Pacific oyster Crassostrea gigas,one of the most exploited molluscs in the world,has suffered from massive mortality in recent decades,and the occurrence mechanisms have not been well *** this study,to reveal the relationship of associated microbiota to the fitness of oysters,temporal dynamics of microbiota in the gill,hemolymph,and hepatopancreas of *** during April 2018-January 2019 were investigated by 16 S rRNA gene *** microbiota in *** exhibited tissue heterogeneity,of which Spirochaetaceae was dominant in the gill and hemolymph while Mycoplasmataceae enriched in the ***-occurrence network demonstrated that the gill microbiota exhibited higher inter-taxon connectivity while the hemolymph microbiota had more *** richness(Chao 1 index)and diversity(Shannon index)of microbial community in each tissue showed no significant seasonal variations,except for the hepatopancreas having a higher richness in the ***,beta diversity analysis indicated a relatively stable microbiota in each tissue during the sampling period,showing relative abundance of the dominant taxa exhibiting temporal *** indicate that the microbial community in *** showed a tissue-specific stability with temporal dynamics in the composition,which might be essential for the tissue functioning and environmental adaption in *** work provides a baseline microbiota in *** and is helpful for the understanding of host-microbiota interaction in oysters.

关键词： Pacific oyster associated microbiota spatial compartmentalization temporal stability

Investigating the Genetic Bases of Growth Regulation by E2F3 in Dwarf Surf Clams Mulinia lateralis

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean university of China 2024年第5期23卷 1347-1358页

作者： YAO Ruixing WANG Chen kong Lingling WANG Yujue BAO Zhenmin HU Xiaoli MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Fisheries science and Food Production Processes Qingdao Marine Science and TechnologyCenterQingdao 266237China Key Laboratory of Tropical Aquatic Germplasm of Hainan Province Sanya Oceanographic InstitutionOcean University of ChinaSanya 572000China

Bivalve aquaculture plays a crucial role in the aquaculture industry due to the economic value of many bivalve *** the underlying genetic basis of bivalve growth regulation is essential for enhancing germplasm innovation and ensuring sustainable development of the *** numerous candidate genes have been identified,their functional validation remains ***,the dwarf surf clam(Mulinia lateralis)serves as a promising model organism for investigating genetic mechanisms underlying growth regulation in *** GWAS study in the Yesso scallop(Patinopecten yessoensis)has pinpointed the E2F3 gene as a key regulator of growth-related ***,the specific role of E2F3 in bivalve growth remains *** study aimed to further confirm the regulatory function of the E2F3 gene in the dwarf surf clam through RNA interference *** results revealed several genes are associated with individual growth and development,including CTS7,HSP70B2,and PGLYRP3,as well as genes involved in lipid metabolism such as FABP2 and *** enrichment analysis indicated that E2F3 primarily modulates critical processes like amino acid and lipid *** findings suggest that E2F3 likely regulates growth in the dwarf surf clam by influencing amino acid and lipid ***,this study advances our understanding on the function of E2F3 gene in growth regulation in bivalves,providing valuable insights for future research in this field.

关键词： growth regulation E2F3 RNA interference experiment transcriptomic analysis dwarf surf clam Mulinia lateralis bivalve

Phase transition of multi-component(TiZrVNb)C ceramics—Part I:Phase decomposition induced by carbon content

在线全文

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2024年第5期13卷 679-688页

作者： Qingyi kong Rao Zhang Lei Chen Sijia Huo Wenyu Lu Yujin Wang Boxin Wei Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structure‒Function Integrated Materials and Green Manufacturing technology Harbin Institute of TechnologyHarbin 150001China School of Materials science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150001China National Key Laboratory of Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

Phase decomposition can effectively enhance the mechanical properties of carbide ceramics and can overcome the difficulty of enhancing the mechanical properties of single-phase multicomponent carbide *** this work,a series of nonstoichiometric(TiZrVNb)Cx ceramics were prepared by spark plasma sintering(SPS)at different *** effects of the carbon content on the phase composition,microstructure evolution,and mechanical properties were investigated in *** decomposition occurred with decreasing carbon *** different solid solutions of(Ti,V)-rich and Zr-rich phases formed from the decomposition of equimolar single-phase solid solutions,namely,the Zr-poor phase and Zr-rich phase,*** distribution of Nb element is relatively *** semicoherent interfaces between the Zr-poor phase and the Zr-rich phase can harden and strengthen effectively under the synergistic effect of grain *** with phase decomposition structures have apparent advantages compared to single-phase high-entropy *** work provides an important train of thought for the microstructure tailoring and properties optimization of multi-component carbide ceramics.

关键词： multicomponent ceramics nontoichiometry microstructure evolution phase decomposition mechanical properties

End-to-End Paired Ambisonic-Binaural Audio Rendering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 502-513页

作者： Yin Zhu Qiuqiang kong Junjie Shi Shilei Liu Xuzhou Ye Ju-Chiang Wang Hongming Shan Junping Zhang Shanghai Key Laboratory of Intelligent Information Processing School of Computer ScienceFudan UniversityShanghai 200433China Beijing ByteDance technology Co.Ltd. Shanghai 201102China. Chinese university of Hong kong Hong KongChina IEEE Institute of science and technology for Brain-Inspired Intelligence and MOE Frontiers Center for Brain science Fudan UniversityShanghai 200433 Shanghai Center for Brain science and Brain-Inspired technology Shanghai 200031China

Binaural rendering is of great interest to virtual reality and immersive media. Although humans can naturally use their two ears to perceive the spatial information contained in sounds, it is a challenging task for machines to achieve binaural rendering since the description of a sound field often requires multiple channels and even the metadata of the sound sources. In addition, the perceived sound varies from person to person even in the same sound field. Previous methods generally rely on individual-dependent head-related transferred function(HRTF)datasets and optimization algorithms that act on HRTFs. In practical applications, there are two major drawbacks to existing methods. The first is a high personalization cost, as traditional methods achieve personalized needs by measuring HRTFs. The second is insufficient accuracy because the optimization goal of traditional methods is to retain another part of information that is more important in perception at the cost of discarding a part of the information. Therefore, it is desirable to develop novel techniques to achieve personalization and accuracy at a low cost. To this end, we focus on the binaural rendering of ambisonic and propose 1) channel-shared encoder and channel-compared attention integrated into neural networks and 2) a loss function quantifying interaural level differences to deal with spatial information. To verify the proposed method, we collect and release the first paired ambisonic-binaural dataset and introduce three metrics to evaluate the content information and spatial information accuracy of the end-to-end methods. Extensive experimental results on the collected dataset demonstrate the superior performance of the proposed method and the shortcomings of previous methods.

关键词： Ambisonic attention binaural rendering neural network

Matrine-loaded self-adhesive swelling microneedle for inflammation regulation to improve eczema treatment

在线全文

学校读者我要写书评

暂无评论

Marine Life science & technology 2024年第3期6卷 535-546页

作者： Jiale Shen Jiarui Wang Meng Wu Yan Shi Minhyeock Lee Zhiguo Wang Ming kong College of Marine Life sciences Ocean University of ChinaQingdao 266003China Department of Burn and Plastic Surgery the Affiliated Hospital of Qingdao UniversityQingdao UniversityQingdao 266021China Department of Biotechnology College of Life Sciences and BiotechnologyKorea UniversitySeoul 02841Republic of Korea

Eczema is a common chronic dermatological *** treatments exhibit limited efficacy due to fast drug release resulting in short-term *** of a new treatment strategy that enables sustained drug release and longterm maintenance on the skin surface is necessary.A self-adhesive swelling microneedle patch(SDSMNs)was designed and constructed using a two-step casting *** adhesive substrate was prepared by blending gelatin and dopamine via oxidation of NaIO4,so it could adhere onto the skin surface as well as withstand repeated bending movement without *** swelling needles were fabricated using polyvinyl alcohol(PVA)and polyvinylpyrrolidone(PVP),which could swell by absorbing interstitial fluid and release the drug in a controlled *** also showed desirable antibacterial activities toward *** and *** adhesive microneedles loaded with matrine(MAT-SDSMNs),an antiinflammatory Chinese medicine,dramatically relieved eczema symptoms through IL-17 mediated inflammation *** use of MAT-SDSMNs significantly decreased the infiltration of inflammation cells and level of inflammatory cytokines,reduced the skin thickness,and increased collagen deposition fraction compared with conventional ointment or subcutaneous *** results suggested that MAT-SDSMNs can improve eczema treatment by regulating the local inflammatory microenvironment,providing a simple,self-administered sustainable strategy for eczema treatment.

关键词： Self-adhesive swelling microneedle Eczema Matrine Inflammation regulation

Progress and Implications from Genetic Studies of Bipolar Disorder

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2024年第8期40卷 1160-1172页

作者： Lingzhuo kong Yiqing Chen Yuting Shen Danhua Zhang Chen Wei Jianbo Lai Shaohua Hu Department of Psychiatry the First Affiliated HospitalZhejiang University School of MedicineHangzhou310003China The Key Laboratory of Mental Disorder Management in Zhejiang Province Hangzhou310003China Brain Research Institute of Zhejiang university Hangzhou310003China Zhejiang Engineering Center for Mathematical Mental Health Hangzhou310003China Department of Neurobiology NHC and CAMS Key Laboratory of Medical NeurobiologySchool of Brain Science and Brian Medicineand MOE Frontier Science Center for Brain Science and Brain-machine IntegrationZhejiang University School of MedicineHangzhou310003China

With the advancements in gene sequencing technologies,including genome-wide association studies,polygenetic risk scores,and high-throughput sequencing,there has been a tremendous advantage in mapping a detailed blueprint for the genetic model of bipolar disorder(BD).To date,intriguing genetic clues have been identified to explain the development of BD,as well as the genetic association that might be applied for the development of susceptibility prediction and pharmacogenetic *** genes of BD,such as CACNA1C,ANK3,TRANK1,and CLOCK,have been found to be involved in various pathophysiological processes correlated with *** the specific roles of these genes have yet to be determined,genetic research on BD will help improve the prevention,therapeutics,and prognosis in clinical *** latest preclinical and clinical studies,and reviews of the genetics of BD,are analyzed in this review,aiming to summarize the progress in this intriguing field and to provide perspectives for individualized,precise,and effective clinical practice.

关键词： Bipolar disorder Genetics Risk gene Genome-wide association study Sequencing technology

Precise orbit determination for Tianwen-1 during mapping phase

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Astrodynamics 2024年第3期8卷 471-481页

作者： Shanhong Liu Jing kong Jianfeng Cao Hao Huang Haijun Man Jianguo Yan Xie Li National Key Laboratory of science and technology on Aerospace Flight Dynamics Beijing100094China Beijing Aerospace Control Center Beijing100094China Institute for Frontiers in Astronomy and Astrophysics Bejing Normal UniversityBeijing100875China Astronomy Department Bejing Normal UniversityBeijing100875China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan430079China

The mapping phase is a key stage of the Tianwen-1 orbiter. It has the longest exploration time and gathers abundant radio tracking data via the Chinese deep space network. Thus, it also provides opportunities for radio science research topics such as the Mars gravity field model, ephemeris, and radio occultation experiments. At this stage, the need for imaging takes the highest priority, leading to frequent attitude adjustments for the spacecraft, which presents challenges for Precise Orbit Determination (POD). To improve the accuracy of the spacecraft’s orbit, this study analyzes the effects of arc length, the empirical acceleration, and the solar radiation pressure parameters on POD, considering the limited number of radio tracking observations. For one-day arcs, the POD is not able to adequately account for wheel off-loading and a few unknown forces with limited observations, but reasonable fitting is performed for the wheel off-loading occurring during tracking periods or the gap between two tracking periods. When extending the POD arc to three days, the estimated empirical acceleration can be well-fitted and reflects the aggregation feature, but the solar radiation pressure parameter has little impact on POD results. The root mean square of two-way range-rate residuals after POD is about 0.18-0.35 mm/s;the orbital position accuracy of 60% of the arcs is better than 100 m.

关键词： empirical acceleration mapping phase precise orbit determination(POD) radio science