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Biochemical Genetic Mechanism and QTLs of Early Maturing without Yield Loss in Short-season Upland Cotton(Gossypium hirsutum L.)
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作者 SONG Mei-zhen YU Shu-xun FAN Shu-li 《棉花学报》 CSCD 北大核心 2008年第S1期68-68,共1页
The short seaso n cotton(SSC)was important Upland plant ecotype(Gossy pium hirsutum L.).The growt h of sSC was very short that is105~110 days(after planting).sSC could increa se plant index and farmer incomes on the s... The short seaso n cotton(SSC)was important Upland plant ecotype(Gossy pium hirsutum L.).The growt h of sSC was very short that is105~110 days(after planting).sSC could increa se plant index and farmer incomes on the same soil in one year.However,there was a contradiction between the early maturing and high-yield potential of SSC varieties that restrict SSC development.The ssc varietie s often exhibited premature senescence.Biochemical breeding could be one such solution to this problem. 展开更多
关键词 QTLS Biochemical Genetic Mechanism and QTLs of Early maturing without Yield Loss in Short-season Upland Cotton Gossypium hirsutum L
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Bacterial Groups Concerned with Maturing Process in Manure Production Analyzed by a Method Based on Restriction Fragment Length Polymorphism Analysis
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作者 Katsuji Watanabe Naoto Horinishi +2 位作者 Kunimasa Matumoto Akihiro Tanaka Kenichi Yakushido 《Advances in Microbiology》 2015年第13期832-841,共10页
Composting is a biological aerobic decomposition process consisted from different phases. Although the Japanese Standards for manure recommended that it took at least 6 months to complete the maturing phase, there was... Composting is a biological aerobic decomposition process consisted from different phases. Although the Japanese Standards for manure recommended that it took at least 6 months to complete the maturing phase, there was no reliable ground. In order to find out shortening method of the maturing phase, the microorganisms concerned with a progress of the maturing was determined by using the most probable number method (MPN) and PCR-RFLP of the 16S rDNA, which was found effective to provide numbers and taxonomy of polymyxin B resistant bacterial groups in the former paper [1]. Compared to the numbers after thermophilic phase, those of Actinobacteria, δ-proteobacteria, and the other gram negative bacteria increased to 50 times, 20 times, and 105 times, respectively, after maturing phase, while those of Bacillus spp., and α and β-proteobacteria decreased to 1/10, and 1/105 after maturing phase. Numbers of the other Fumicutes, and γ-proteobacteria remained in the same revel. Actinobacteria, δ-proteobacteria, and the other gram negative bacteria might be concerned with a progress of the maturing phase, because these bacterial groups were detected and enumerated due to their proliferation ability. Although number of Acitinobacteria might be underestimated because of a PCR bias, the method was found effective for the purpose to monitor bacteria actively proliferated in culture medium. 展开更多
关键词 maturing Phase MANURE PRODUCTION Microchip ELECTROPHORESIS Multiple Enzyme RESTRICTION Fragment Length Polymorphism Analysis The Most PROBABLE Number METHOD
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In Vitro Propagation Potential via Somatic Embryogenesis of the Two Maturing Early Cultivars of European Chestnut (Castanea sativa Mill.)
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作者 Mehmet Sezgin Hatice Dumanoğlu 《American Journal of Plant Sciences》 2016年第7期1001-1012,共12页
Turkey ranks the third in the production of chestnuts in the world having an important place both in domestic and global markets. However, the chestnut production and the number of trees have been diminishing in recen... Turkey ranks the third in the production of chestnuts in the world having an important place both in domestic and global markets. However, the chestnut production and the number of trees have been diminishing in recent years. Therefore, in vitro propagation of the chestnut, in addition to the classical propagation techniques, should be applied. Especially the propogation of the early maturing cultivars and production of the quality chestnuts will provide a better income to the producer. Here, somatic embryo production and regeneration from the immature cotyledons of the early maturing cultivars of the European chestnut (Castanea sativa Mill), Haciibis and Karamehmet, were studied using the somatic embryogenesis, one of the in vitro propagation techniques. To induce the somatic embryogenesis, 168 different combinations were applied to both cultivars. The somatic embryogenesis rate in Haciibis cultivar, in which the interactions were observed among the applications, was found to be 9.9% while it was 11.1% for the Karamehmet cultivar. Dessication, cold treatment, gibberellic acid (GA<sub>3</sub>) and benzyladenine (BA) + naphthaleneacetic acid (NAA) applications were performed on the regeneration of the somatic embryos, and 40% conversion to plant was obtained with desiccation together with BA + NAA supplementation to the medium. 展开更多
关键词 Early maturing Cultivars in Vitro Propagation Somatic Embryogenesis Germinating
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The Main Characteristics of Early Maturing Kiwifroit Variety "Fengyue" and Its Cultivating Techniques for High Yield and Good Quality
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作者 Zhong Caihong,Wang Zhongyan,and Peng DifeiHunan Horticulture Research Institute,Changsha 410125,China 《Hunan Agricultural Science & Technology Newsletter》 2001年第2期12-14,共3页
The new kiwifruit variety 'Fengyue' has bigger,avg.90g,max.127.8g fruit with beautiful appearance and good storage tolerance.The fruit is fine and tender in pulp texture with a thick sweet taste and rich refre... The new kiwifruit variety 'Fengyue' has bigger,avg.90g,max.127.8g fruit with beautiful appearance and good storage tolerance.The fruit is fine and tender in pulp texture with a thick sweet taste and rich refreshing aroma in addition to over 15% soluble solids content.This variety matures in September,Changsha,and has a high fruit setting percentage.Fruiters should pay great attention to fertilizer or water management,pruning,and flower or fruit thinning in cultivating'Fengyue 展开更多
关键词 Fengyue early maturing KIWIFRUIT
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A Maturing Seismic Contractor in the International Market
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作者 Xu Wenrong(Director of Foreign Affair Department,Bureau of Geophysical Prospecting,CNPC) 《China Oil & Gas》 CAS 1996年第1期56-57,共2页
AMaturingSeismicContractorintheInternationalMarketXuWenrong,DirectorofTheBureauofGeophysicalProspecting(BGP)... AMaturingSeismicContractorintheInternationalMarketXuWenrong,DirectorofTheBureauofGeophysicalProspecting(BGP),oneofthesubsidia... 展开更多
关键词 A maturing Seismic Contractor in the International Market
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An early maturing rice variety of high quality—Zhefu 218
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作者 WANG Kaizhi,CNRRI 《Chinese Rice Research Newsletter》 1994年第2期12-12,共1页
Early maturing rice variety of high quality "Zhefu 218" was developed by prof XIA Yingwu, Zhejiang Agricultural University, Hangzhou, China. The growth period of the new rice variety is 106 d and its average... Early maturing rice variety of high quality "Zhefu 218" was developed by prof XIA Yingwu, Zhejiang Agricultural University, Hangzhou, China. The growth period of the new rice variety is 106 d and its average yield is about 5.25-7.08 t / ha. It has the speciality of early-maturing combined with good quality. Not only the grains of "Zhefu 218" are of excellent cooking, but also of nutritive quality. The flavour of the cooked rice of"Zhefu 218" is considerably better than those of the ordinary rice cultivars here. 展开更多
关键词 HIGH An early maturing rice variety of high quality
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Maturing Sino-African Ties
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作者 Liu Jian 《ChinAfrica》 2013年第12期28-29,共2页
ONE year has passed since the new Communist Party of China (CPC) leadership took office in November 2012. Has there been a level of continuity in China's Africa policy in that time and what are the challenges facin... ONE year has passed since the new Communist Party of China (CPC) leadership took office in November 2012. Has there been a level of continuity in China's Africa policy in that time and what are the challenges facing Sino-African relations in the new era? Against 展开更多
关键词 maturing Sino-African Ties
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Changes in serum thyroid hormone levels and thyroid gland activity of artificially maturing female Japanese eel (Anguilla japonica) 被引量:2
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作者 曲宪成 Massaki Nagae +1 位作者 Sinji Adachi Kohei Yamauchi 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2003年第1期111-122,共12页
In order to evaluate the involvement of the thyroid gland in reproduction, thyroid functioning was described in female cultivated Japanese eel (Anguilla japonica) in progressive stages of sexual maturation induced by ... In order to evaluate the involvement of the thyroid gland in reproduction, thyroid functioning was described in female cultivated Japanese eel (Anguilla japonica) in progressive stages of sexual maturation induced by chum salmon pituitary homogenate (SPH) treatment. Serum thyroid hormones, thyroxine (T4) and triiodothyronine (T3) were also measured in each stage. Thyroid gland activity (epithelial cell height) was high before SPH injection (previtellogenic stage), further increasing at the early vitellogenic stage, thereafter decreasing to late vitellogenic and migratory nucleus stages. The profiles of both T3 and T4 changed during vitellogenesis, being high during previtellogenic and early vitellogenic stages, and subsequently declining, thus mimicking thyroid gland activity. These results suggest that the thyroid has relation with eel ovarian development during artificial maturation. 展开更多
关键词 Thyroid activity thyroxine (T4) triiodothyronine (T3) Japanese eel artificial maturation
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Characterization of early maturing elite genotypes based on MTSI and MGIDI indexes:an illustration in upland cotton(Gossypium hirsutum L.) 被引量:1
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作者 D S RAJ Supritha PATIL Rajesh S. +2 位作者 PATIL Bhuvaneshwara R. NAYAK Spurthi N. PAWAR Kasu N. 《Journal of Cotton Research》 CAS 2024年第3期253-265,共13页
Background Globally,the cultivation of cotton is constrained by its tendency for extended periods of growth.Early maturity plays a potential role in rainfed-based multiple cropping system especially in the current era... Background Globally,the cultivation of cotton is constrained by its tendency for extended periods of growth.Early maturity plays a potential role in rainfed-based multiple cropping system especially in the current era of climate change.In the current study,a set of 20 diverse Gossypium hirsutum genotypes were evaluated in two crop seasons with three planting densities and assessed for 11 morphological traits related to early maturity.The study aimed to identify genotype(s)that mature rapidly and accomplish well under diverse environmental conditions based on the two robust multivariate techniques called multi-trait stability index(MTSI)and multi-trait genotype-ideotype distance index(MGIDI).Results MTSI analysis revealed that out of the 20 genotypes,three genotypes,viz.,NNDC-30,A-2,and S-32 accomplished well in terms of early maturity traits in two seasons.Furthermore,three genotypes were selected using MGIDI method for each planting densities with a selection intensity of 15%.The strengths and weaknesses of the genotypes selected based on MGIDI method highlighted that the breeders could focus on developing early-maturing genotypes with specific traits such as days to first flower and boll opening.The selected genotypes exhibited positive genetic gains for traits related to earliness and a successful harvest during the first and second pickings.However,there were negative gains for traits related to flowering and boll opening.Conclusion The study identified three genotypes exhibiting early maturity and accomplished well under different planting densities.The multivariate methods(MTSI and MGIDI)serve as novel approaches for selecting desired genotypes in plant breeding programs,especially across various growing environments.These methods offer exclusive benefits and can easily construe and minimize multicollinearity issues. 展开更多
关键词 COTTON MTSI MGIDI Genotype environment interaction Early maturity Multi-trait Multi-environment
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Potential Impact of Space Environments on Developmental and Maturational Programs Which Evolved to Meet the Boundary Conditions of Earth: Will Maturing Humans Be Able to Establish a Functional Biologic System Set Point under Non-Earth Conditions?
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作者 David A.Hart 《Journal of Biomedical Science and Engineering》 2019年第12期500-513,共14页
Mammalian development and maturation, particularly processes for humans have evolved in the context of the boundary conditions of Earth (i.e. 1 g gravity, geomagnetic field, background radiation) to yield functional i... Mammalian development and maturation, particularly processes for humans have evolved in the context of the boundary conditions of Earth (i.e. 1 g gravity, geomagnetic field, background radiation) to yield functional individuals, although the process is not perfect and “errors” do occur. With the advent of spaceflight to low Earth orbit (the International Space Station), humans are now exposed to microgravity and increased exposure to radiation. However, thus far, only adult humans have served as astronauts, but this will likely change with plans to explore deep space and colonize planets. Thus, conception, fetal development, post-birth maturation, puberty and skeletal maturity will occur in the context of boundary conditions that did not shape human evolution and influence physiological and biomechanical systems designed to function within the Earth’s boundary conditions. Thus, processes utilizing the 1 g environment (i.e. walking upright) and the geomagnetic field (i.e. the electrical/biomagnetic basis of neural interactions) will have to adapt to new boundary conditions, providing opportunity for additional errors or alterations in processing during development which could impact functional outcomes at multiple levels. This review/perspective will discuss some of these issues and attempt to provide direction for addressing the potential issues to be encountered. 展开更多
关键词 Development MATURATION Humans MICROGRAVITY GEOMAGNETIC Influences Space Environments
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FORECASTING AUTOMOBILE WARRANTY PERFORMANCE IN PRESENCE OF ‘MATURING DATA’ PHENOMENA USING MULTILAYER PERCEPTRON NEURAL NETWORK 被引量:4
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作者 Bharatendra RAI Nanua SINGH 《Journal of Systems Science and Systems Engineering》 SCIE EI CSCD 2005年第2期159-176,共18页
Automobile companies that spend billions of dollars annually towards warranty cost, give high priority to warranty reduction programs. Forecasting of automobile warranty performance plays an important role towards the... Automobile companies that spend billions of dollars annually towards warranty cost, give high priority to warranty reduction programs. Forecasting of automobile warranty performance plays an important role towards these efforts. The forecasting process involves prediction of not only the specific months-in-service (MIS) warranty performance at certain future time, but also at future MIS values. However, 'maturing data' (also called warranty growth) phenomena that causes warranty performance at specific MIS values to change with time, makes such a forecasting task challenging. Although warranty forecasting methods such as log-log plots and dynamic linear models appear in literature, there is a need for applications addressing the well recognized issue of ‘maturing data’. In this paper we use an artificial neural network for the forecasting of warranty performance in presence of ‘maturing data’ phenomena. The network parameters are optimized by minimizing the training and testing errors using response surface methodology. This application shows the effectiveness of neural networks in the forecasting of automobile warranty performance in the presence of the ‘maturing data’ phenomena. 展开更多
关键词 maturing data or warranty growth repairs per thousand multilayer perceptron neural network normalized root mean square error signal-to-noise ratio central composite design
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Ecological characteristics and carrying capacity analysis of marine ranching ecosystem in Beibu Gulf based on Ecopath model
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作者 Cheng CHENG Haolin YU +9 位作者 Jie FENG Yan LI Qingxian CAO Li LIU Cheng YANG Shan ZHAO Shuo LI Zhen ZHANG Haiyan WANG Tao ZHANG 《Journal of Oceanology and Limnology》 2026年第1期201-218,共18页
Marine pollution and overfishing induced the biodiversity loss and ecological degradation of the Beibu Gulf ecosystem in Guangxi,SE China.In an effort to restore the ecosystem and fishery resources,artificial reefs we... Marine pollution and overfishing induced the biodiversity loss and ecological degradation of the Beibu Gulf ecosystem in Guangxi,SE China.In an effort to restore the ecosystem and fishery resources,artificial reefs were deployed in the Beibu Gulf as the marine ranching area and their ecological performance need to be investigated.We constructed Ecopath ecological trophic models for the marine ranching area and a nearby control area to compare their ecosystem throughput and food web structure difference,and to calculate the ecological carrying capacity of various functional groups.Results indicate that the total system throughput of the marine ranching area was significantly higher than the control area,and the majority of system throughput occurred at trophic levelsⅠandⅡin both ecosystems.The system connectance indices for the marine ranching and control areas were 0.27 and 0.32,and the omnivory indices were 0.16 and 0.19,indicating simple food web structures;both areas are in a developmental stage with TPP/TR ratios of 2.69 and 9.36,respectively.Compared to the control area,marine ranching area exhibited a higher system maturity,and the ecological carrying capacity of“large and medium-sized demersal fish”and“other bivalves”functional groups in the marine ranching area increased by 43.83%and 233.62%,respectively,allowing for more high-trophic-level predators and large benthic animals.This study provided a reference for the formulation of fishery management policies in the Beibu Gulf,to maintain ecosystem stability and biodiversity. 展开更多
关键词 marine ranching ECOPATH ecosystem maturity trophic structure
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Deciphering the genetic regulation of flowering time in rapeseed for early-maturation breeding
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作者 Minghao Zhang Wei Chang +16 位作者 Ruicheng Hu Yuxuan Ruan Xiaodong Li Yonghai Fan Boyu Meng Shengting Li Mingchao Qian Yuling Chen Yuanyi Mao Daifei Song Haikun Yang Luxiang Niu Guangyuan Cao Zhixia Deng Zhixuan Qin Hui Wang Kun Lu 《Journal of Genetics and Genomics》 2026年第1期16-27,共12页
Flowering time is a critical agronomic trait with a profound effect on the productivity and adaptabillity of rapeseed(Brassica napus L.).Strategically advancing flowering time can reduce the risk of yield losses due t... Flowering time is a critical agronomic trait with a profound effect on the productivity and adaptabillity of rapeseed(Brassica napus L.).Strategically advancing flowering time can reduce the risk of yield losses due to extreme climatic conditions and facilitate the cultivation of subsequent crops on the same land,thereby enhancing overall agricultural efficiency.In this review,we synthesize current information on flowering time regulation in rapeseed through an integrated analysis of its genetic,hormonal,and environmental dimensions,emphasizing their crosstalk and implications for yield.We consolidate multi-omics evidence from population genetics,functional genomics,and systems biology to create a haplotype-based framework that overcomes the trade-off between flowering time and yield,providing support for the precision breeding of early-maturing cultivars.The insights presented here could inform future research on flowering time regulation and guide strategies for increasing rapeseed productivity. 展开更多
关键词 Brassica napus Early maturation Flowering time Genetic regulation YIELD
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The Efficacy and Safety of B-Cell Maturation Antigen(BCMA)Antibody-Drug Conjugates(ADC)in Development against Cancer:A Systematic Review
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作者 Jing Shan Catherine King +1 位作者 Harunor Rashid Veysel Kayser 《Oncology Research》 2026年第1期1-22,共22页
Objectives:B-cell maturation antigen(BCMA)-targeted antibody–drug conjugates(ADCs)have emerged as promising therapies for relapsed/refractory multiple myeloma(RRMM),but the overall efficacy and safety profile is uncl... Objectives:B-cell maturation antigen(BCMA)-targeted antibody–drug conjugates(ADCs)have emerged as promising therapies for relapsed/refractory multiple myeloma(RRMM),but the overall efficacy and safety profile is unclear.This study aimed to synthesize the available evidence on the safety and efficacy of BCMA-ADCs in development for RRMM.Methods:A systematic search was conducted using six bibliographic databases and ClinicalTrials.gov up to November 2024.Studies were eligible if they were human clinical trials or animal studies evaluating BCMA-ADCs and reported efficacy and safety outcomes.Data extraction and quality assessments were conducted using validated tools,including ROBINS-I and SYRCLE’s risk of bias tool.Results:A total of 21 studies were included:16 clinical trials and five animal studies.Key findings included that belantamab mafodotin demonstrated variable but generally durable response rates(32%–85%)and a broad range of progression-free survival(PFS)(2.8–36.6 months),albeit with ocular toxicities in 51%–96%.Among newer candidates,MEDI2228 showed median PFS 5.1–6.6 months with 14%discontinuation for ocular symptoms,while AMG 224 had an overall response rate(ORR)of 23%(9/40)with anemia 21%,thrombocytopenia 24%,and ocular adverse events(AEs)21%.Animal studies supported the tumor-eradicating potential of all BCMA-ADC candidates,although safety signals such as hepatic and renal toxicity were noted with HDP-101.The risk of bias assessment revealed generally moderate to serious concerns in human trials,while the overall quality of the animal studies was acceptable.Conclusions:BCMA-targeted ADC candidates show encouraging efficacy in RRMM,particularly belantamab mafodotin.However,frequent AEs,especially ocular and hematologic toxicities,underscore the need for optimization in ADC design.Further research should prioritize enhancing safety while maintaining clinical benefit. 展开更多
关键词 B-cell maturation antigen antibody drug conjugates multiple myeloma belantamab mafodotin ocular toxicity clinical trials
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Unraveling the role of ufmylation in the brain
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作者 Rita J.Serrano Robert J.Bryson-Richardson 《Neural Regeneration Research》 2026年第2期667-668,共2页
Ufmylation is an ubiquitin-like post-translational modification characterized by the covalent binding of mature UFM1 to target proteins.Although the consequences of ufmylation on target proteins are not fully understo... Ufmylation is an ubiquitin-like post-translational modification characterized by the covalent binding of mature UFM1 to target proteins.Although the consequences of ufmylation on target proteins are not fully understood,its importance is evident from the disorders resulting from its dysfunction.Numerous case reports have established a link between biallelic loss-of-function and/or hypomorphic variants in ufmylation-related genes and a spectrum of pediatric neurodevelopmental disorders. 展开更多
关键词 target proteins post translational modification pediatric neurodevelopmental disorders covalent binding mature ufm target proteinsalthough biallelic loss function ufmylation hypomorphic variants neurodevelopmental disorders
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Maturing Relations——China and South Korea push bilateral relations to new highs
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作者 YAN WEI 《Beijing Review》 2007年第34期12-13,共2页
For decades after the founding of the People ’s Republic of China in 1949,China and the Republic of Korea were sworn enemies.
关键词 maturing Relations China and South Korea push bilateral relations to new highs
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A MATURING MARKET
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作者 WANG JUN 《Beijing Review》 2007年第5期32-33,共2页
China’s stock market is getting older and wiser, but by international standards it has a long way to go China’s stock market is still a teenager, but it’s a healthy one with dreams of becoming more like the grown-u... China’s stock market is getting older and wiser, but by international standards it has a long way to go China’s stock market is still a teenager, but it’s a healthy one with dreams of becoming more like the grown-up markets internationally.Especially for China’s stock market, 1998 was a long time ago.That was the year Shenzhen Development Bank issued public stock—the first such kind approved by the Chinese Government. 展开更多
关键词 A maturing MARKET
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Combing the Entropy Weight Method with Fuzzy Mathematics for Assessing the Quality and Post-Ripening Mechanism of High-Temperature Daqu during Storage 被引量:1
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作者 YANG Junlin YANG Shaojuan +8 位作者 WU Cheng YIN Yanshun YOU Xiaolong ZHAO Wenyu ZHU Anran WANG Jia HU Feng HU Jianfeng WANG Diqiang 《食品科学》 北大核心 2025年第9期48-62,共15页
This study investigated the physicochemical properties,enzyme activities,volatile flavor components,microbial communities,and sensory evaluation of high-temperature Daqu(HTD)during the maturation process,and a standar... This study investigated the physicochemical properties,enzyme activities,volatile flavor components,microbial communities,and sensory evaluation of high-temperature Daqu(HTD)during the maturation process,and a standard system was established for comprehensive quality evaluation of HTD.There were obvious changes in the physicochemical properties,enzyme activities,and volatile flavor components at different storage periods,which affected the sensory evaluation of HTD to a certain extent.The results of high-throughput sequencing revealed significant microbial diversity,and showed that the bacterial community changed significantly more than did the fungal community.During the storage process,the dominant bacterial genera were Kroppenstedtia and Thermoascus.The correlation between dominant microorganisms and quality indicators highlighted their role in HTD quality.Lactococcus,Candida,Pichia,Paecilomyces,and protease activity played a crucial role in the formation of isovaleraldehyde.Acidic protease activity had the greatest impact on the microbial community.Moisture promoted isobutyric acid generation.Furthermore,the comprehensive quality evaluation standard system was established by the entropy weight method combined with multi-factor fuzzy mathematics.Consequently,this study provides innovative insights for comprehensive quality evaluation of HTD during storage and establishes a groundwork for scientific and rational storage of HTD and quality control of sauce-flavor Baijiu. 展开更多
关键词 microbial community high-temperature Daqu comprehensive quality evaluation entropy weight method maturation process
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Restoration of hydrocarbon generation potential of the highly mature Lower Cambrian Yuertusi Formation source rocks in the Tarim Basin 被引量:2
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作者 Yao Hu Cheng-Zao Jia +6 位作者 Jun-Qing Chen Xiong-Qi Pang Lin Jiang Chen-Xi Wang Hui-Yi Xiao Cai-Jun Li Yu-Jie Jin 《Petroleum Science》 2025年第2期588-606,共19页
The Early Cambrian Yuertusi Formation(Є_(1)y)in the Tarim Basin of China deposits a continuously developed suite of organic-rich black mudstones,which constitute an important source of oil and gas reservoirs in the Pa... The Early Cambrian Yuertusi Formation(Є_(1)y)in the Tarim Basin of China deposits a continuously developed suite of organic-rich black mudstones,which constitute an important source of oil and gas reservoirs in the Paleozoic.However,its hydrocarbon generation and evolution characteristics and resource potential have long been constrained by deeply buried strata and previous research.In this paper,based on the newly obtained ultra-deep well drilling data,the hydrocarbon generation and expulsion model ofЄ_(1)y shale was established by using data-driven Monte Carlo simulation,upon which the hydrocarbon generation,expulsion,and retention amounts were calculated by using the diagenetic method.The research indicates that theЄ_(1)y shale reaches the hydrocarbon generation and expulsion threshold at equivalent vitrinite reflectances of 0.46%and 0.72%,respectively.The cumulative hydrocarbon generation is 68.88×10^(10)t,the cumulative hydrocarbon expulsion is 35.59×10^(10)t,and the cumulative residual hydrocarbon is 33.29×10^(10)t.This paper systematically and quantitatively calculates the hydrocarbon expulsion at various key geological periods for theЄ_(1)y source rocks in the study area for the first time,more precisely confirming that the black shale of theЄ_(1)y is the most significant source rock contributing to the marine oil and gas resources in the Tarim Basin,filling the gap in hydrocarbon expulsion calculation in the study area,and providing an important basis for the formation and distribution of Paleozoic hydrocarbon reservoirs.The prospect of deep ultra-deep oil and gas exploration in the Tarim Basin is promising.Especially,the large area of dolomite reservoirs under the Cambrian salt and source rock interiors are the key breakthrough targets for the next exploration in the Tarim Basin. 展开更多
关键词 Evaluation of resource potential Highly mature hydrocarbon source rocks Yuertusi formation Tarim Basin
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Role of preservation conditions on enrichment and fluidity maintenance of medium to high maturity lacustrine shale oil 被引量:2
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作者 ZHAO Wenzhi LIU Wei +9 位作者 BIAN Congsheng LIU Xianyang PU Xiugang LU Jiamin LI Yongxin LI Junhui LIU Shiju GUAN Ming FU Xiuli DONG Jin 《Petroleum Exploration and Development》 2025年第1期1-16,共16页
In addition to the organic matter type,abundance,thermal maturity,and shale reservoir space,the preservation conditions of source rocks play a key factor in affecting the quantity and quality of retained hydrocarbons ... In addition to the organic matter type,abundance,thermal maturity,and shale reservoir space,the preservation conditions of source rocks play a key factor in affecting the quantity and quality of retained hydrocarbons in source rocks of lacustrine shale,yet this aspect has received little attention.This paper,based on the case analysis,explores how preservation conditions influence the enrichment of mobile hydrocarbons in shale oil.Research showns that good preservation conditions play three key roles.(1)Ensure the retention of sufficient light hydrocarbons(C_(1)–C_(13)),medium hydrocarbons(C_(14)–C_(25))and small molecular aromatics(including 1–2 benzene rings)in the formation,which enhances the fluidity and flow of shale oil;(2)Maintain a high energy field(abnormally high pressure),thus facilitating the maximum outflow of shale oil;(3)Ensure that the retained hydrocarbons have the miscible flow condition of multi-component hydrocarbons(light hydrocarbons,medium hydrocarbons,heavy hydrocarbons,and heteroatomic compounds),so that the heavy hydrocarbons(C_(25+))and heavy components(non-hydrocarbons and asphaltenes)have improved fluidity and maximum flow capacity.In conclusion,in addition to the advantages of organic matter type,abundance,thermal maturity,and reservoir space,good preservation conditions of shale layers are essential for the formation of economically viable shale oil reservoirs,which should be incorporated into the evaluation criteria of shale oil-rich areas/segments and considered a necessary factor when selecting favorable exploration targets. 展开更多
关键词 medium-to-high maturity lacustrine shale oil mobile hydrocarbon enrichment preservation conditions stratum energy field miscible hydrocarbon component retained hydrocarbon fluidity Songliao Basin Ordos Basin Junggar Basin Bohai Bay Basin
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