检索结果-南通市图书馆

Alcoholic ketoacidosis in two Chinese patients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Medical Journal 2000年第11期113卷 91-93页

作者： Rossa WKChiu Hok-Leung Tai and Ching-Wan lam DepartmentofChemicalPathology TheChineseUniversityofHongKongPrinceofWalesHospitalHongKongChinaDepartmentofChemicalPathologyTheChineseUniversityofHongKongPrinceofWalesHospitalHongKongChina

Complexity scalable control algorithm for intra coding in H.264 under energy constraints

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2010年第3期16卷 274-279页

作者： Gao Xuejun lam Kin Man ZhuoLi ShenLansun Signal and Information Processing Laboratory Beijing University of Technology Beijing 100124 P.R. China Centre for Signal Processing Department of Electronic and Information Engineering the Hong Kong Polytechnic University Kowloon Hong Kong P.R. China

In this paper, the complexity of intra coding is first analyzed so as to achieve a weight of complexity measurement for each intra mode. Then, a new complexity scalable control algorithm for intra coding in H. 264 is proposed, based on the rearrangement of the order of candidate modes and an efficient complexity allocation and control （CAAC） scheme at the macroblock （MB） level. The candidate modes of each MB are rearranged according to the local-edge information. Experimental results show that our proposed algorithm can make an appropriate cut-off point of the candidate modes sequence adaptively according to the current energy condition of a mobile device, so as to adjust the complexity at any level while maximizing the video quality, which can prolong the operational lifetime of the battery with minimum degradation in video quality.

关键词： complexity scalable control complexity allocation rearrangement of candidate modes intra coding H. 264 energy constraints

Contribution of Genomics to Gene Discovery in Plant Abiotic Stress Responses

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 Plant 2012年第6期5卷 1176-1178页

作者： Yun Ma Feng Qin lam-Son Phan Tran Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing100039Chlna Signaling Pathway Research Unit Plant Science CenterRIKEN Yokohama Institute1-7-22Suehiro-choTsurumiYokohama 230-0045Japan

Sustaining agricultural production under adverse environ- mental conditions, such as drought and high salinity, rep- resents a major challenge. The discovery of key genes and signal transduction pathways underlying plant responses to environmental stress will play an important role in devel- oping strategies for the genetic improvement of crops to address this challenge. Crop functional genomics has greatly contributed to the identification of abiotic stress-related genes. Current advances in genomic technologies now pro- vide effective and high-throughput methods for identifying stress-related genes at a genome-wide level, especially with the availability of the complete genomic sequence of several model and crop plant species. The development of genetic database resources has allowed bioinformatic approaches to identify stress-tolerant gene families across species based on homology and synteny. Additionally, genome-wide associa- tion studies （GWAS） for complex trait loci in crops have facili- tated the discovery of critical stress-related genes and their favorable alleles.

关键词： IN-SILICO ANALYSIS TRANSCRIPTION FACTORS DEHYDRATION STRESS PREDICTION

Responses in gas exchange and water status between drought-tolerant and-susceptible soybean genotypes with ABA application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2015年第6期3卷 500-506页

作者： Md.Mokter Hossain Hon-Ming lam Jianhua Zhang School of Life Sciences and Center for Soybean Research of the State Key Laboratory of Agrobiotechnology The Chinese University of Hong Kong

The purpose of this study was to investigate the physiological responses of drought-tolerant and drought-susceptible soybean genotypes to exogenous abscisic acid(ABA) application during progressive soil drying at seedling stages. Five-day old soybean seedlings were transplanted into PVC tubes filled with soil mixture. Seedlings were watered daily with similar water volumes until second trifoliate leaves emerged, and thereafter soil drying with or without exogenous ABA application was imposed. Half of the seedlings of each genotype were left for regular watering as control plants. Soil water status declined significantly over seven days of withholding water supply for both genotypes. Leaf expansion rate, stomatal conductance(g_s), leaf water potential(ψ_w), and relative water content of leaves(%RWC) declined significantly under soil drying as well as soil drying with ABA application, compared to their values for well-watered soybean genotypes. However, a drought-tolerant genotype(C12) responded more rapidly than a drought-susceptible genotype(C08) after imposition of soil drying and soil drying with exogenous ABA. In addition, application of exogenous ABA to water-restricted soybeans resulted in higher %RWC and ψwin the drought-tolerant than in the drought-susceptible genotype. Compared to the drought-susceptible genotype, the drought-tolerant genotype was more responsive to exogenous ABA application, resulting in a higher root-to-shoot ratio.

关键词： Drought stress Exogenous ABA Leaf relative water content Stomatal conductance Soybean genotypes

Is engineered wood China’s way to carbon neutrality?

在线全文

学校读者我要写书评

暂无评论

Journal of Bioresources and Bioproducts 2022年第2期7卷 1-2页

作者： Christian Sonne Changlei Xia Su Shiung lam Department of Ecoscience Faculty of Technological SciencesAarhus UniversityRoskilde DK-4000Denmark Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesUttarakhand 248007India Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia

China emits more than 25%of the world’s carbon dioxide(https://***/co2-emissions),and in December 2021 the country’s daily carbon trading volume hits a new highest *** with the EU and USA,China bears a great responsibility to limit global warming to 2℃,and therefore recently launches a plan to be carbon-neutral be-fore 2060(https://***/co2-emissions).However,its rapid urbanization challenges this initiative as the boom-ing building and construction industry constitute more than 1/3 of the total energy consumption,which undesirably in-creases carbon emissions(IEA,2019;Duan et al.,2021).Although China has built five new nuclear power stations and closed down more than 1000 coal-fired power plants,it is still highly insufficient to meet the country’s goal to be carbon-neutral(https://***/countries/china/).

关键词： Climate change Engineered wood Carbon neutrality Building material China

Recent Progress in AIE-active Polymers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2019年第4期37卷 289-301,I0004页

作者： Yu Bing Hu Jacky W.Y.lam Ben Zhong Tang HKUST-Shenzhen Research Institute Department of Chemistry The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and Technology Center for Aggregation-Induced Emission SCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology

The demand for highly efficient solid-state luminophores is continuously growing due to their potential applications in optoelectrical devices, chemosensors, and biological applications. The discovery of luminogens with aggregation-induced emission(AIE)by Tang et al. in 2001 provides a good reponse to this demand. Among the exploited AIE luminogens, AIE-active polymers possess many advantages such as simple synthesis, convenient structrue modifications, and good processability, which offer an extensive platform for scientists and engineers. Herein, the design principles and latest synthetic advancement of AIE-active polymers are summarized, including click polymerization and multicomponent polymerization. Non-conjugated heteroatom-rich polymers were in situ generated and demonstated non-conventional clusteroluminoscence. Advanced applications including fluorescent sensors, stimuli-responsive materials,biological applications, circularly polarized luminescence, and electroluminescence are then introduced in detail. AIE-active polymers display the signal-amplification effect for sensitive and selective response to chemo/bioanalytes or stimuli and enhanced photosensitization effect for cancer theranostics. Retrospecting the expansion of this field can further strengthen our belief that AIE-active polymers are promising for conceptual innovation and technological breakthroughs in the near future.

关键词： Aggregation-induced emission Polymer synthesis High-tech application

Impact of modern antiviral therapy of chronic hepatitis B and C on clinical outcomes of liver disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2021年第29期27卷 4831-4845页

作者： Tiffany Khoo Danielle lam John K Olynyk Department of Gastroenterology and Hepatology Fiona Stanley HospitalMurdoch 6150Australia School of Medical and Health Sciences Edith Cowan UniversityJoondalup 6027Australia

Chronic infections with the hepatitis B and C viruses have significant worldwide health and economic *** treatments for hepatitis C such as interferon and ribavirin therapy were ineffective and poorly tolerated by *** introduction of directly acting curative antiviral therapy for hepatitis C and the wider use of nucleos(t)ide analogues for suppression of chronic Hepatitis B infection have resulted in many positive *** the prevalence of hepatitis B and C have concurrently reduced transmission rates and hence,the number of new *** treatments have decreased the rates of liver decompensation and as a result,lowered hospitalisation and mortality rates for both chronic hepatitis B and C *** quality of life of chronically infected patients has also been improved significantly by modern *** therapy has stopped the progression of liver disease to cirrhosis in certain patient cohorts and prevented ongoing hepatocellular damage in patients with existing *** term benefits of antiviral therapy include a reduced risk of developing hepatocellular carcinoma and decreased number of patients requiring liver *** review article assesses the literature and summarises the impact of modern antiviral therapy of chronic hepatitis B and C on clinical outcomes from liver disease.

关键词： Hepatitis B Hepatitis C Nucleotide analogues Directly acting antiviral therapy Clinical outcomes Liver disease

Time-dependent Early-age Behaviors of Concrete under Restrained Condition

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 Wuhan University of Technology(Materials Science) 2007年第2期22卷 350-353页

作者：马新伟 R D Hooton H lam School of Materials Science and Engineering Harbin Institute of Technology Department of Civil Engineering University of Toronto

To investigate the early-age behaviors of concrete under a restrained condition, a set of apparatus was developed. In this way, the tensile creep and other early-age properties can be investigated in depth. By measuring the modulus of elasticity of concrete, synchronous shrinkage of concrete and steel rings and free shrinkage of concrete, the deformations of concrete ring can be quantified respectively. The experimental results show the tensile stress in concrete is time-dependent, and the stress at cracking is much lower than the tensile strength at that age; the tensile creep plays an important role in relaxing the tensile stress and postponing the cracking of concrete.

关键词： shrinkage restrained shrinkage elastic strain tensile creep time-dependent behaviors

Regulation of Photosynthesis during Abiotic Stress-Induced Photoinhibition

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2015年第9期8卷 1304-1320页

作者： Mayank Anand Gururani Jelli Venkatesh lam-Son Phan Tran School of Biotechnology Yeungnam University Gyeongsan Gyeongbook 772-749 Korea Department of Bioresource and Food Science Konkuk University Seou1143-701 Korea Signaling Pathway Research Unit RIKEN Center for Sustainable Resource Science 1-7-22 Suehiro-cho Tsurumi Yokohama Kanagawa 230-0045 Japan

Plants as sessile organisms are continuously exposed to abiotic stress conditions that impose numerous detrimental effects and cause tremendous loss of yield. Abiotic stresses, including high sunlight, confer serious damage on the photosynthetic machinery of plants. Photosystem II （PSII） is one of the most susceptible components of the photosynthetic machinery that bears the brunt of abiotic stress. In addition to the generation of reactive oxygen species （ROS） by abiotic stress, ROS can also result from the absorption of excessive sunlight by the light-harvesting complex. ROS can damage the photosynthetic apparatus, particularly PSII, resulting in photoinhibition due to an imbalance in the photosynthetic redox signaling pathways and the inhibition of PSII repair. Designing plants with improved abiotic stress tolerance will require a comprehensive understanding of ROS signaling and the regulatory functions of various components, including protein kinases, transcription factors, and phytohormones, in the responses of photosynthetic machinery to abiotic stress. Bioenergetics approaches, such as chlorophyll a transient kinetics analysis, have facilitated our understanding of plant vitality and the assessment of PSII efficiency under adverse environmental conditions. This review discusses the current understanding and indicates potential areas of further studies on the regulation of the photosynthetic machinery under abiotic stress.

关键词： abiotic stress chlorophyll a fluorescence hormones light-harvesting complex photosynthesis