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| 1 | Quantitative evaluation methods for waterflooded layers of conglomerate reservoir based on well logging data显示文摘The rapid changing near source, multi-stream depositional environment of conglomerate reservoirs leads to severe heterogeneity, complex lithology and physical properties, and large changes of oil layer resistivity. Quantitative evaluation of water-flooded layers has become an important but difficult focus for secondary development of oilfields. In this paper, based on the analysis of current problems in quantitative evaluation of water-flooded layers, the Kexia Group conglomerate reservoir of the Sixth District in the Karamay Oilfield was studied. Eight types of conglomerate reservoir lithology were identified effectively by a data mining method combined with the data from sealed coring wells, and then a multi-parameter model for quantitative evaluation of the water-flooded layers of the main oil-bearing lithology was developed. Water production rate, oil saturation and oil productivity index were selected as the characteristic parameters for quantitative evaluation of water-flooded layers of conglomerate reservoirs. Finally, quantitative evaluation criteria and identification rules for water-flooded layers of main oil-bearing lithology formed by integration of the three characteristic parameters of water-flooded layer and undisturbed formation resistivity. This method has been used in evaluation of the water-flooded layers of a conglomerate reservoir in the Karamay Oilfield and achieved good results, improving the interpretation accuracy and compliance rate. It will provide technical support for avoiding perforation of high water-bearing layers and for adjustment of developmental programs. | Tan Fengqi Li Hongqi Xu Changfu Li Qingyuan Peng Shouchang | 2010 | Petroleum Science2010,7,4: | 21 |
| 2 | An innovative integrated system utilizing solar energy as power for the treatment of decentralized wastewater显示文摘This article reports an innovative integrated system utilizing solar energy as power for decentralized wastewater treatment, which consists of an oxidation ditch with double channels and a photovoltaic (PV) system without a storage battery. Because the system operates without a storage battery, which can reduce the cost of the PV system, the solar radiation intensity affects the amount of power output from the PV system. To ensure that the power output is sufficient in all different weather conditions, the solar radiation intensity of 78 W/m 2 with 95% confidence interval was defined as a threshold of power output for the PV system according to the monitoring results in this study, and a step power output mode was used to utilize the solar energy as well as possible. The oxidation ditch driven by the PV system without storage battery ran during the day and stopped at night. Therefore, anaerobic, anoxic and aerobic conditions could periodically appear in the oxidation ditch, which was favorable to nitrogen and phosphate removal from the wastewater. The experimental results showed that the system was efficient, achieving average removal efficiencies of 88% COD, 98% NH 4 + -N, 70% TN and 83% TP, under the loading rates of 140 mg COD/(g MLSS·day), 32 mg NH 4 + -N/(g MLSS·day), 44 mg TN/(g MLSS·day) and 5 mg TP/(g MLSS·day). | Changfu Han Junxin Liu Hanwen Liang Xuesong Guo Lin Li | 2013 | Journal of Environmental Sciences2013,25,2: | 12 |
| 3 | Post-traumatic stress disorder status in a rescue group after the Wenchuan earthquake relief显示文摘Previous studies have suggested that the incidence of post-traumatic stress disorder in earthquake rescue workers is relatively high. Risk factors for this disorder include demographic characteristics, earthquake-related high-risk factors, risk factors in the rescue process, personality, social support and coping style. This study examined the current status of a unit of 1 040 rescue workers who participated in earthquake relief for the Wenchuan earthquake that occurred on May 12th, 2008. Post-traumatic stress disorder was diagnosed primarily using the Clinician-Administered Post-traumatic Stress Disorder Scale during structured interviews. Univariate and multivariate sta-tistical analyses were used to examine major risk factors that contributed to the incidence of post-traumatic stress disorder. Results revealed that the incidence of this disorder in the rescue group was 5.96%. The impact factors in univariate analysis included death of family members, contact with corpses or witnessing of the deceased or seriously injured, near-death experience, severe injury or mental trauma in the rescue process and working at the epicenter of the earthquake. Correlation analysis suggested that post-traumatic stress disorder was positively correlated with psychotic and neurotic personalities, negative coping and low social support. Impact factors in mul-tivariate logistic regression analysis included near-death experience, severe injury or mental trauma, working in the epicenter of the rescue, neurotic personality, negative coping and low social support, among which low social support had the largest odds ratio of 20.42. Findings showed that the oc-currence of post-traumatic stress disorder was the result of the interaction of multiple factors. | Junhua Huang Qunying Liu Jinliang Li Xuejiang Li Jin You Liang Zhang Changfu Tian Rongsheng Luan | 2013 | Neural Regeneration Research2013,8,20: | 3 |
| 4 | Enhanced electrochemical performance of poly(ethylene oxide)based composite polymer electrolyte by incorporation of nano-sized metal-organic framework显示文摘 | YUAN Changfu LI Jie HAN Pengfei | 2013 | Journal of Power Sources2013,240,15: | 1 |
| 5 | Effect of adding Y2O3 in cermet electrodes on the electrical conductivities显示文摘 | Wang Changfu Li Guoxun Qu Shuling | 1992 | Rare Metals1992,11,4: | 1 |
| 6 | Adhesive Carrier Particles for Rapidly Hydrated Sorbent for Moderate-tempera- ture Dry Flue Gas Desulfurization显示文摘 | LI Yuan YOU Changfu SONG Chenxing | 2010 | Environmental Science and Technology2010,44,12: | 1 |
| 7 | Carbon storage and sequestration by urban forests in Shenyang, China显示文摘 | Changfu Liu Xiaoma Li | 2011 | Urban Forestry & Urban Greening2011,,2: | 1 |
| 8 | Kinetic model of CaO/fly ash sorbent for flue gas desulphurization at moderate temperatures显示文摘 | YuRan Li HaiYing Qi ChangFu You | 2007 | Fuel2007,86,56: | 1 |
| 9 | Quantitative trait locus mapping of yield and plant height in autotetraploid alfalfa(Medicago sativa L.)显示文摘Alfalfa(Medicago sativa L.)is the most widely grown forage legume crop worldwide.Yield and plant height are important agronomic traits influenced by genetic and environmental factors.The objective of this study was to identify quantitative trait loci(QTL)and molecular markers associated with alfalfa yield and plant height.To understand the genetic basis of these traits,a full-sib F1 population composed of 392 individuals was developed by crossing a low-yielding precocious alfalfa genotype(male parent)with a high-yielding latematuring alfalfa cultivar(female parent).The linkage maps were constructed with 3818 single-nucleotide polymorphism(SNP)markers on 64 linkage groups.QTL for yield and plant height were mapped using phenotypic data for three years.Sixteen QTL associated with yield and plant height were identified on chromosomes 1 to 8.Six QTL explained more than 10%of phenotypic variation,representing major loci controlling yield and plant height.One locus on chromosome 1 controlling yield traits had not been identified in previous studies.Three QTL co-located with other QTL(qyield-1 and qheight-7,qheight-5 and qyield-4,qheight-6,and qyield-6).With further validation,the markers closely linked with these QTL may be used for marker-assisted selection in breeding new alfalfa varieties with high yield. | Fei He Ruicai Long Tiejun Zhang Fan Zhang Zhen Wang Xijiang Yang Xueqian Jiang Changfu Yang Xuxin Zhi Mingna Li Longxi Yu Junmei Kang Qingchuan Yang | 2020 | The Crop Journal2020,8,5: | 1 |
| 10 | Smart nanoprobe based on two-photon sensitized terbium-carbon dots for dual-mode fluorescence thermometer and antibacterial显示文摘Accurate temperature measurement plays an important role in a variety of industrial processes and scientific researches.In our work,the dual-mode temperature response nanoprobe CDs-Tb-TMPDPA containing a two-photon ligand(4-(2,4,6-trimethoxyphenyl)-pyridine-2,6-dicarboxylic acid,TMPDPA)sensitized Tb3+as a temperature-sensitive unit and carbon dots(CDs)as photothermal reagent and a fluorescence reference unit,have been designed and synthesized.In this system,both the fluorescence intensity ratio and the fluorescence lifetime have a good response to temperature.In additio n,due to the excellent photothermal conversion capability of CDs,photothermal antibacterial ability was also tested.Based on the temperature dependence of the fluorescence and the two-photon excitation characteristics of CDs-Tb-TMPDPA,the nanoprobe can also be used in the anti-counterfeiting.Our finding opens a new prospect for the use of two-photon sensitized dual-mode fluorescence thermometers. | Huicheng Yan Hongyuhang Ni Yiwei Yang Changfu Shan Xiaoxi Yang Xiangkai Li Jing Cao Wenyu Wu Weisheng Liu Yu Tang | 2020 | Chinese Chemical Letters2020,31,7: | 1 |
| 11 | Adhesive carrier particles for rapidly hydrated sorbent for moderate-temperature dry flue gas desulfurization显示文摘 | LI Yuan YOU Changfu SONG Chenxing | 2010 | Environmental Science and Technology2010,44,12: | 1 |
| 12 | DSPP mutation in dentinogenesis imperfecta Shields type II 显示文摘 | Zhang Xiaohai Zhao Jun Li Changfu | 2001 | Nat Genet2001,27,2: | 1 |
| 13 | Genome Assembly of Alfalfa Cultivar Zhongmu-4 and Identification of SNPs Associated with Agronomic Traits显示文摘Alfalfa(Medicago sativa L.)is the most important legume forage crop worldwide with high nutritional value and yield.For a long time,the breeding of alfalfa was hampered by lacking reliable information on the autotetraploid genome and molecular markers linked to important agronomic traits.We herein reported the de novo assembly of the allele-aware chromosome-level genome of Zhongmu-4,a cultivar widely cultivated in China,and a comprehensive database of genomic variations based on resequencing of 220 germplasms.Approximate 2.74 Gb contigs(N50 of 2.06 Mb),accounting for 88.39%of the estimated genome,were assembled,and 2.56 Gb contigs were anchored to 32 pseudo-chromosomes.A total of 34,922 allelic genes were identified from the allele-aware genome.We observed the expansion of gene families,especially those related to the nitrogen metabolism,and the increase of repetitive elements including transposable elements,which probably resulted in the increase of Zhongmu-4 genome compared with Medicago truncatula.Population structure analysis revealed that the accessions from Asia and South America had relatively lower genetic diversity than those from Europe,suggesting that geography may influence alfalfa genetic divergence during local adaption.Genome-wide association studies identified 101 single nucleotide polymorphisms(SNPs)associated with 27 agronomic traits.Two candidate genes were predicted to be correlated with fall dormancy and salt response.We believe that the alleleaware chromosome-level genome sequence of Zhongmu-4 combined with the resequencing data of the diverse alfalfa germplasms will facilitate genetic research and genomics-assisted breeding in variety improvement of alfalfa. | Ruicai Long Fan Zhang Zhiwu Zhang Mingna Li Lin Chen Xue Wang Wenwen Liu Tiejun Zhang Long-Xi Yu Fei He Xueqian Jiang Xijiang Yang Changfu Yang Zhen Wang Junmei Kang Qingchuan Yang | 2022 | Genomics, Proteomics & Bioinformatics2022,20,1: | 1 |
| 14 | Adhesion, abrasion, and desulfurization char- acteristics of rapidly hydrated sorbent with cheap and easily obtained ad- hesive carrier particles 显示文摘 | LI Yuan YOU Changfu | 2012 | Industrial and Engineering Chemistry Re- search2012,51,13: | 1 |
| 15 | Study on lightning protection scheme of multi-terminal MMC-MVDC distribution system显示文摘Based on a±10 kV three-terminal MMC-MVDC(medium voltage DC distribution system based on modular multilevel converter)system,in this study,the authors mainly study on the influencing factors and protection schemes of the lightning intruding overvoltage(including direct lightning and back-flashover lightning).Firstly,a lightning intruding overvoltage simulation model of the MMC-MVDC distribution system using overhead lines is established based on the PSCAD/EMTDC program.The influence of steady-state operating voltage and the number of converter stations on the simulation results are simulated and analysed.Meanwhile,the proper simulation modelling method of the lightning intruding overvoltage for multi-terminal MMC-MVDC system is proposed.Secondly,the lightning intruding overvoltage is simulated when the line is struck by the lightning stroke current that occurs once in 20 years and the different lightning protection schemes are proposed.Finally,based on the lightning impulse withstand voltage,lightning trip-out rate and the cost of the protection schemes,the lightning protection schemes in different scenarios are proposed.The simulation results show that if the cost of the system is prioritised,the protection scheme of increasing the number of parallel stacks of the DL arresters can be selected,and if the power supply reliability of the system is prioritised,the protection scheme of installing the overhead ground wire as well as reducing grounding resistance can be selected. | Yuqun Gao Yongxia Han Fanglei Xiao Changfu Chen Jinghan Zhang Jie Zhang Yaqi Zhang Licheng Li | 2020 | High Voltage2020,5,5: | 1 |
| 16 | Adhesive Carrier Particles for Rapidly Hydrated Sorbent for Moderate-temperature Dry Flue Gas Desulfurization显示文摘 | Li Yuan You Changfu Song Chenxing | 2010 | Environmental Science and Technology2010,44,12: | 1 |
| 17 | Poly(lactic-co-glycolic acid) conduit for repair of injured sciatic nerve A mechanical analysis显示文摘Tensile stress and tensile strain directly affect the quality of nerve regeneration after bridging nerve defects by poly(lactic-co-glycolic acid) conduit transplantation and autogenous nerve grafting for sciatic nerve injury. This study collected the sciatic nerve from the gluteus maximus muscle from fresh human cadaver, and established 10-mm-long sciatic nerve injury models by removing the ischium, following which poly(lactic-co-glycolic acid) conduits or autogenous nerve grafts were transplanted. Scanning electron microscopy revealed that the axon and myelin sheath were torn, and the vessels of basilar membrane were obstructed in the poly(lactic-co-glycolic acid) conduit-repaired sciatic nerve following tensile testing. There were no significant differences in tensile tests with autogenous nerve graft-repaired sciatic nerve. Following poly(lactic-co-glycolic acid) conduit transplantation for sciatic nerve repair, tensile test results suggest that maximum tensile load, maximum stress, elastic limit load and elastic limit stress increased compared with autogenous nerve grafts, but elastic limit strain and maximum strain decreased. Moreover, the tendencies of stress-strain curves of sciatic nerves were similar after transplantation of poly(lactic-co-glycolic acid) conduits or autogenous nerve grafts. Results showed that after transplantation in vitro for sciatic nerve injury, poly(lactic-co-glycolic acid) conduits exhibited good intensity, elasticity and plasticity, indicating that poly(lactic-co-glycolic acid) conduits are suitable for sciatic nerve injury repair. | Tao Yu Changfu Zhao Peng Li Guangyao Liu Min Luo | 2013 | Neural Regeneration Research2013,8,21: | 1 |
| 18 | In situ LA-MC-ICP-MS boron isotope and zircon U-Pb age determinations of Paleoproterozoic borate deposits in Liaoning Province, northeastern China显示文摘 | Hu Guyue Li Yanhe Fan Changfu Hou Kejun Zhao Yue Zeng Lingsen | 2015 | Ore Geol Rev2015,65,: | 1 |
| 19 | Physicochemical and structural characteristics of the Venn components of wheat gliadin显示文摘The aim of this study was to analyze the physicochemical and structural characteristics of the Venn components of wheat gliadin to provide theoretical basis of gliadin for processing in dough and Chinese steamed bread. Eight Venn components, Gli-8, Gli-9, Gli-10, Gli-11, Gli-12, Gli-13, Gli-14, and Gli-15, were extracted from wheat gliadin based on their solubility. The results of physicochemical characteristics showed that the differences in the contents, TDS,electrical conductivity, particle size and zeta potential of Venn components were significant, respectively. The content of Gli-15 in gliadin was the highest, and the content of Gli-9 was the lowest. The TDS value of Gli-9 was the highest(336.0), and the TDS value of Gli-15 was the lowest(52.0). The electrical conductivity of Gli-9 was the highest,which was 7.54 times the lowest value of Gli-11. The zeta potential of Gli-9 was -25.2 mV, and the zeta potential of the Gli-15 was -7.64 mV. However, the difference in the p H values was not significant. The results of UV spectrum and FTIR analysis showed that the secondary structures of the Venn components had significant differences. The results of the XRD patterns indicated that the Venn components might not be a single substance. The results of CLSM images implied that the molecular interactions among the components were varied. Hence, the results could provide research materials and basic data for deep processing and utilization of gliadin. | Feng Jia Changfu Zhang Qi Wang Jinhe Li Yu Chen Jinshui Wang | 2020 | Grain & Oil Science and Technology2020,3,1: | 0 |
| 20 | First Record of Soft-shelled Turtle(Testudines, Trionychidae) from the Late Pleistocene of Heilongjiang, Northeast China显示文摘Objective Numerous vertebrate fossils, dominated by the Mammuthus–Coelodonta fauna, have been found from many Late Pleistocene fossil sites in Heilongjiang,northeast China(Jin and Kawamura, 1996). However,fossil turtles have not yet been reported. Recently, two soft-shelled turtle(trionychid) costal plates have been discovered together with other typical Mammuthus–Coelodonta fauna fossils. | WU Wenhao DONG Nan LI Xiaobo ZHOU Changfu FENG Nan Robert R.REISZ | 2021 | Acta Geologica Sinica(English Edition)2021,95,4: | 0 |