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12018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
2The Reference Genome of Tea Plant and Resequencing of 81 Diverse Accessions Provide Insights into Its Genome Evolution and Adaptation显示文摘Tea plant is an important economic crop,which is used to produce the world's oldest and most widely consumed tea beverages.Here,we present a high-quality reference genome assembly of the tea plant(Camellia sinensis var.sinensis)consisting of 15 pseudo-chromosomes.LTR retrotransposons(LTR-RTs)account for 70.38%of the genome,and we present evidence that LTR-RTS play critical roles in genome size expansion and the transcriptional diversification of tea plant genes through preferential insertion in promoter regions and introns.Genes,particularly those coding for terpene biosynthesis pro-teins,associated with tea aroma and stress resistance were significantly amplified through recent tandem duplications and exist as gene clusters in tea plant genome.Phylogenetic analysis of the sequences of 81 tea plant accessions with diverse origins revealed three well-differentiated tea plant populations,support-ing the proposition for the southwest origin of the Chinese cultivated tea plant and its later spread to western Asia through introduction.Domestication and modern breeding left significant signatures on hundreds of genes in the tea plant genome,particularly those associated with tea quality and stress resis-tance.The genomic sequences of the reported reference and resequenced tea plant accessions provide valuable resources for future functional genomics study and molecular breeding of improved cul-tivars of tea plants.Enhua Xia Wei Tong Yan Hou Yanlin An Linbo Chen Qiong Wu Yunlong Liu Jie Yu Fangdong Li Ruopei Li Penghui Li Huijuan Zhao Ruoheng Ge Jin Huang Ali Inayat Mallano Yanrui Zhang Shengrui Liu Weiwei Deng Chuankui Song Zhaoliang Zhang Jian Zhao Shu Wei Zhengzhu Zhang Tao Xia Chaoling Wei Xiaochun Wan 2020Molecular Plant2020,13,7:51
3Qi-Qin Accretionary Belt in Central China Orogen: accretion by trench jam of oceanic plateau and formation of intra-oceanic arc in the Early Paleozoic Qin-Qi-Kun Ocean显示文摘Most orogenic belts have experienced a complex accretionary process with multiple episodes of sea?oor subduction and trench retreat.This accretionary process is important in continenta development and growth[1,2].Three giant orogens extend in China,e.g.,the Central Asian Orogen in the north,the Central China Orogen in the middle and the Himalayan Orogen in the southwest.They are keys for the formation of the Eurasian continent(Fig.1a).The Central China OrogenShuguang Song Liming Yang Yuqi Zhang Yaoling Niu Chao Wang Li Su Yanlin Gao 2017Science Bulletin2017,62,15:28
4Thermodynamics and kinetics of phase transformation in rare earth–magnesium alloys:A critical review显示文摘Magnesium and its alloys are significant superior metallic materials for structural components in automobile and aerospace industries due to their excellent physicomechanical properties.The Mg–rare earth(RE)systems have attracted great interests because RE additions can improve both the deformability and the strength of Mg alloys through solid solution strengthening and precipitation hardening mechanisms.This paper focuses on the interface stability,together with thermodynamics and kinetics of nucleation and growth of the key phases and matrix phases in Mg–RE alloys.In this paper,the theory and recent advances on Mg–RE alloys,especially for the interface stability,thermodynamics and kinetics of nucleation and growth of the key phases and matrix phases,together with their relationships with micro-structures,and macroscopic properties,are reviewed.By combining the thermodynamics/kinetics integrated simulations with various advanced experimental techniques,“reverse”design of Mg–RE alloys starting from the target service performance is put forward as a kind of scientific paradigm with rational design.Qun Luo Yanlin Guo Bin Liu Yujun Feng Jieyu Zhang Qian Li Kuochih Chou 2020Journal of Materials Science & Technology2020,44,9:26
5Reactivation of γ-globin expression through Cas9 or base editor to treat β-hemoglobinopathies显示文摘Dear Editor,Mutations in the β-globin gene,the essential component of adult hemoglobin(HbA;a2p2),results in either a production of aberrant sickle hemoglobin(HbS)leading to sickle cell disease(SCD)or an insufficient β-globin synthesis leading to β-thalassemia.These two major forms of β-hemoglobinopathies cause impaired erythropoiesis and life-threatening anemia.Clinical evidence has suggested that reaaivation of fetal γ-globin(HBG)gene expression which is normally silenced after birth by certain genetic mutations can ameliorate the clinical course of β-hemoglobinopathies.Liren Wang Linxi Li Yanlin Ma Handan Hu Qi Li Yang Yang Wenbang Liu Shuming Yin Wei Li Bin Fu Ryo Kurita Yukio Nakamura Mingyao Liu Yongrong Lai Dali Li 2020Cell Research2020,30,3:14
6Characteristics and Morbidity of the Tuberculosis Epidemic--China,2019显示文摘Introduction:The year 2019 was crucial for the implementation of China’s National“13th 5-Year”Tuberculosis(TB)Control Plan.We conducted this study to evaluate the characteristics and progress towards controlling TB in China.Methods:We collected and analyzed the pulmonary tuberculosis(PTB)data of China between January 1,2015 and December 31,2019 from the National Notifiable Disease Reporting System(NNDRS).Results:In 2019,there were 775,764 PTB cases reported in NNDRS,of which 349,307 were bacteriologically-confirmed(Bac+)cases.The PTB case notification rate(CNR)was 55.55 per 100,000,and the Bac+CNR was 25.01 per 100,000.From 2018 to 2019,the number of PTB cases fell by 6.3%,but the number of Bac+cases increased by 25.9%.The annual decrease in the rate of reported PTB was 3.4% from 2015 to 2019.The 5 provincial-level administrative divisions(PLADs)with the highest PTB CNR were as follows:Tibet(182.38 per 100,000),Xinjiang(169.05 per 100,000),Qinghai(134.53 per 100,000),Guizhou(102.51 per 100,000),and Hainan(90.22 per 100,000).The rate of reported PTB was 74.84 per 100,000 for males and 35.40 per 100,000 for females.There were 8,116 cases(1.0%)among children aged 0–14 years,and 197,730 cases(25.5%)among adults aged 65 years and over.Of the reported cases,470,932 were farmers,which was the most common occupation at 60.7%.Conclusions and Implications for Public Health Practice:The TB epidemic has decreased dramatically year by year.Most PTB cases were in the central and western regions of China,and the high-risk groups were farmers and elderly people aged 65 years and over.Wei Chen Hui Zhang Xin Du Tao Li Yanlin Zhao 2020China CDC weekly2020,2,12:13
7Acupuncture preconditioning protects hippocampal neurons from transient ischemia/reperfusion injury显示文摘The present study established a model of brain ischemia in aged rats using four-vessel occlusion.We observed hippocampal CA1 neuronal apoptosis and apoptosis-mediated protease caspase-3 expression following preconditioning of electroacupuncture at Baihui(GV 20).Our results showed that the number of hippocampal CA1 normal neurons was decreased,and degenerated neurons were increased 12 hours to 3 days following cerebral ischemia/reperfusion.The number of hippocampal CA1 apoptotic neurons and caspase-3-positive neurons in rats with cerebral ischemia/reperfusion injury was significantly decreased following acupuncture preconditioning.Acupuncture preconditioning protects aged rats against ischemia/reperfusion injury by regulating caspase-3 protein expression.Mingshan Wang Haipeng Zhou Fei Shi Shilong Ma Yanlin Bi Yuqiu Liu Hong Liu Haiou Li 2011Neural Regeneration Research2011,6,15:12
8The large increase of δ^(13)C_(carb)-depth gradient and the end-Permian mass extinction显示文摘Carbonate carbon isotope δ(13Ccarb) has received considerable attention in the Permian-Triassic transition for its rapid negative shift coinciding with the great end-Permian mass extinction event.The mechanism has long been debated for such a δ13Ccarb negative excursion through the end-Permian crisis and subsequent large perturbations in the entire Early Triassic.A δ13Ccarb depth gradient is observed at the Permian-Triassic boundary sections of different water-depths,i.e.,the Yangou,Meishan,and Shangsi sections,and such a large δ13Ccarb-depth gradient near the end-Permian mass extinction horizon is believed to result from a stratified Paleotethys Ocean with widespread anoxic/euxinic deep water.The evolution of δ13Ccarb-depth gradient combined with paleontological and geochemical data suggests that abundant cyanobacteria and vigorous biological pump in the immediate aftermath of the end-Permian extinction would be the main cause of the large δ13Ccarb-depth gradient,and the enhanced continental weathering with the mass extinction on land provides a mass amount of nutriment for the flourishing cyanobacteria.Photic zone anoxia/euxinia from the onset of chemocline upward excursion might be the direct cause for the mass extinction whereas the instability of chemocline in the stratified Early Triassic ocean would be the reason for the delayed and involuted biotic recovery.SONG HaiJun TONG JinNan XIONG YanLin SUN DongYing TIAN Li SONG HuYue 2012Science China Earth Sciences2012,55,7:11
9Self-assembly of latex particles for colloidal crystals显示文摘Self-assembly of latex particles is of great importance for fabricating various functional colloidal crystals. In this paper, we review recent research on the self-assembly of latex particles for colloidal crystals, covering the assembly forces and various assembly approaches of latex particles, including self-assembly by gravity sedimentation, vertical deposition, physical confinement, electric field, and magnetic field. Furthermore, some simple methods for assembling latex particles such as spin coating, spray coating, and printing are also summarized.Zhirong Li Jingxia Wang Yanlin Song 2011Particuology2011,9,6:7
10The Epidemiological Characteristics of Pulmonary Tuberculosis——Kashgar Prefecture,Xinjiang Uygur Autonomous Region,China,2011-2020显示文摘Introduction:National Notifiable Disease Reporting System(NNDRS)plays an important role in the early detection and control of tuberculosis(TB)in China.This study analyzed the epidemiological characteristics of pulmonary tuberculosis(PTB)in Kashgar Prefecture,Xinjiang Uygur Autnomous Region,China from 2011 to 2020 to provide a scientific basis for developing TB control strategies and measures in Kashgar.Methods:The data were collected from the NNDRS,which included the geographical distribution,age,sex,occupation,and pathogenic classification of reported PTB cases in 12 counties/cities of Kashgar Prefecture from 2011 to 2020.Descriptive statistics were used to describe the characteristic of PTB epidemic in Kashgar.Results:There were 189,416 PTB cases reported during 2011–2020,with a mean annual PTB case notification rate(CNR)of 451.29/100,000.A rising trend in the rate of reported PTB between 2011 and 2017(χ2 trend=26.09,P<0.01)and a declining trend between 2018 and 2020(χ2 trend=314.44,P<0.01)were observed.The months with the highest reported number of PTB cases were March to May and November to December.The mean annual rate of reported PTB was 451.88/100,000 for males and 450.67/100,000 for females.In addition,19.76%of patients were bacteriologically-confirmed(Bac+)cases(37,425/189,416),and the mean annual Bac+CNR was 89.17/100,000,rising from 64.76/100,000 in 2011 to 139.12/100,000 in 2020(χ^(2)_(trend)=74.44,P<0.01).Conclusions:The CNR of reported PTB in Kashgar showed a significant declining trend in the past three years.Males,elderly population,winter and spring,and farmers as an occupation were the main factors associated with high incidence of tuberculosis in Kashgar.Targeted prevention and treatment of TB should be strengthened in key groups in this region.Diermulati Tusun Maiweilanjiang Abulimiti Xirizhati Mamuti Zhenjiang Liu Da Xu Guanzhen Li Xiaowang Peng Tuerhong Abudureyimu Lijie Zhang Yanlin Zhao Xichao Ou 2021China CDC weekly2021,3,26:6
11Effects of Yishengukang decoction on expression of bone-specific alkaline phosphatase,carboxyterminal propeptide of typeⅠprocollagen,and carboxyterminal cross-linked telepeptide of typeⅠcollagen in malignant tumor patients with bone metastasis显示文摘OBJECTIVE: To investigate the effect of Yishengukang decoction on the expression of the metabolic bone markers, bone-specific alkaline phosphatase(BAP), carboxyterminal propeptide of type Ⅰ procollagen(PICP), and carboxyterminal cross-linked telepeptide of type Ⅰ collagen(ICTP), in cancer patients with bone metastasis.METHODS: Patients(n = 180) were divided into three groups:(a) bone metastasis patients treated with Yishengukang and pamidronate disodium injection(treatment group, n = 60);(b) bone metastasis patients treated with pamidronate disodium injection alone(control group, n = 60);(c) cancer patients without metastatic bone lesion(non-bone metastasis group, n = 60). Serum levels of the metabolic markers BAP, PICP, and ICTP were detected by enzyme-linked immunosorbent assay pre- and post-therapy.RESULTS: A significant decrease in serum BAP level was observed in the treatment group compared with the control group. However there were no significant differences in serum levels of PICP and ICTP before or after treatment compared with the control group.CONCLUSION: Yishengukang decoction combined with pamidronate disodium injection reduced serum BAP level to a greater extent that pamidronate disodium injection alone. Furthermore, the combined therapy was more beneficial in regulating imbalanced bone metabolism after bone metastasis,and may represent the molecular mechanism underpinning the effects of Yishengukang decoction.Yin Yukun Feng Li Zhou Lei Li Jie Gao Yin Wang Ningjun Yu Jianhua Jiang Zhenglong He Shengqi Lu Dianrong Wang Fang Du Yanlin 2017Journal of Traditional Chinese Medicine2017,37,1:6
12Technology for high performance TRIP steel显示文摘Thermodynamics of martensite transformation in low alloy TRIP steel was evaluated.It follows from the calculation that ε phase might be formed at above room temperature in the low Mn steel.Tested steel was therefore prepared according to the estimation result.High volume fraction of retained austenite(above 20%) containing 1.37%C was obtained in the steel after continuous annealing treatment.Tensile test showed that the ultimate strength of the steel was 1248 MPa,elongation rate 25%,the product of strength and elongation rate 31200 MPa%,reaching the grade of the third generation automobile steel.XRD detection indicated that after tensile test there existed ' martensite while TEM revealed that ε martensite also existed in the steel.Strengthening-toughening of the steel was thus raised due to the effect of transformation induced plasticity of two kinds of martensite.In addition,the phase stability of carbonitrates containing V was estimated and the complex micro-alloying effect was applied to the steel to control the size of austenite(about 1 μm) and enhance the stability of austenite.LI Lin GAO Yi ZHU NaQiong HE YanLin LIU RenDong HE ZhongPing SHI Wen ZHANG Mei 2012Science China(Technological Sciences)2012,55,7:5
13A New Species of the Asi an Toad Genus Megophrys sensu lato (Anura: Megophryidae) from Guizhou Province, China显示文摘We describe a new species of the genus Megophr ys from Guizhou Province, China. Molecular phylogenetic analyses based on mitochondrial DNA and nuclear DNA sequences all strongly supported the new species as an independent clade nested into the Megophrys clade and sister to M. minor. On morphology,the new species is distinguished from its congeners by a combination of the following characters:(1) small body size with SVL < 39.2 mm in male and SVL < 40.4 mm in female;(2) vomerine teeth absent;(3) tongue not notched behind;(4) a small horn-like tubercle at the edge of each upper eyelid;(5) tympanum distinctly visible, rounded;(6) two or three metacarpal tubercles in hand;(7) relative finger lengths: Ⅰ< Ⅱ< Ⅴ< Ⅲ;(8) toes without webbing;(9) heels overlapped when thighs are positioned at right angles to the body;(10) tibiotarsal articulation reaching tympanum to eye when leg stretched forward;(11) an internal single subgular vocal sac in male;(12) in breeding male, the nuptial pads with black nuptial spines on the dorsal bases of the first and second fingers.Jing LIU Shize LI Gang WEI Ning XU Yanlin CHENG Bin WANG Jun WU 2020Asian Herpetological Research2020,11,1:4
14Prevalence of Metabolic Syndrome and Risk Factors Among Chinese Adults:Results from a Population-Based Study—Beijing,China,2017–2018显示文摘Summary What is already known about this topic?Metabolic syndrome(MetS)is one of the most easily available health indicative markers for cardiovascular diseases,and it has become a major public health problem worldwide due to increasing urbanization and aging populations.The prevalence of MetS increased dramatically in China,however,there are no records of MetS defined by the 2017 Chinese Diabetes Society for Beijing by far.What is added by this report?In this study,the data of 24,412 participants aged 18–74 years from a large population-based study in Beijing was collected.The overall prevalence of MetS among Beijing residents was 24.5%.The prevalence was 35.2%in males and 15.4%in females.What are the implications for public health practice?Effective public health strategies should target males,people with older age,lower education,higher body mass index,smokers,those who drink alcohol,those who are unemployed or retired,and those who live in rural areas on MetS prevention and control.Jufen Liu Qingping Liu Zhiwen Li Jing Du Chao Wang Yanlin Gao Zaihua Wei Jing Wang Yunping Shi Jianting Su Yang Liu Ping Wang Chunyan Xie Gang Li Bing Shao Le Zhang 2022China CDC weekly2022,4,29:4
15The microfacies and sedimentary responses to the mass extinction during the Permian-Triassic transition at Yangou Section, Jiangxi Province, South China显示文摘A Permian-Triassic(P-Tr) boundary section of continuous carbonate facies, which well recorded the biotic and environmental processes through the great P-Tr transition in the shallow non-microbialite carbonate facies, has been studied in Yangou, Leping County, Jiangxi Province. The P-Tr sequence is well correlated with the Meishan section according to the conodont biostratigraphy and the excursion of carbon isotopes. A series of high-resolution thin-sections from the P-Tr boundary carbonate rocks at the Yangou section are studied to explore the interrelation between environmental change and biological evolution during the transitional time. Six microfacies have been identified based upon the observation of the thin-sections under a microscope on the grains and matrix and their interrelation. Combined with the data of fossils and carbon isotopes, Microfacies 4(MF-4), coated-grain-bearing foraminifer oolitic sparitic limestone, and Microfacies 6(MF-6), dark shelly micritic limestone, should be the different responses to the two episodes of mass extinction and environmental events that can be correlated throughout South China and even over the world. The oolitic limestone of MF-4 is the first finding from the latest Permian strata in South China and it might be a proxy of an unusual environmental condition of high pCO2, low sulfate concentration and of microbial blooming in the aftermath of the latest Permian mass extinction. The micritic limestone of MF-6 containing rich micro-gastropods and ostracods probably represents the blooming event of disaster taxa in the earliest Triassic environment. The microfacies analysis at the Yangou section can well reveal the episodic process of the biological evolution and environmental change in the shallow non-microbialite carbonate facies throughout the great P-Tr transition, thus the Yangou section becomes an important complement to the Meishan section.TIAN Li TONG JinNan SUN DongYing XIONG YanLin WANG ChengGang SONG HaiJun SONG HuYue HUANG YunFei 2014Science China Earth Sciences2014,57,9:4
16Application of third-party mediation for medical disputes: an introduction of Chinese experience显示文摘Cao Yanlin Wang Jiangjun Zheng Xueqian Jin Qinghan Tian Yongquan Wen Xuebin Wei Zhanying Li Wu 2014Chinese Medical Journal2014,,14:4
17Effect of Mesoscale Land Use Change on Characteristics of Convective Boundary Layer:Semi-Idealized Large Eddy Simulations over Northwest China显示文摘Although large-scale topography and land use have been properly considered in weather and climate models, the effect of mesoscale and microscale heterogeneous land use on convective boundary layer(CBL) has not been fully understood yet. In this study, the influence of semi-idealized strip-like patches of oases and deserts, which resemble irrigated land use in Northwest China, on the CBL characteristics, is investigated based on the Weather Research and Forecasting(WRF)-large eddy simulation(LES) driven by observed land surface data. The influences of soil water content in oases on aloft CBL flow structure, stability, turbulent kinetic energy(TKE), and vertical fluxes are carefully examined through a group of sensitivity experiments. The results show that secondary circulation(SC)/turbulent organized structures(TOS) is the strongest/weakest when soil water content in oases is close to saturation(e.g.,when the oases are irrigated). With the decrease of soil water content in oases(i.e., after irrigation), SC(TOS) becomes weak(strong) in the lower and middle CBL, the flux induced by SC and TOS becomes small(large), which has a dramatic impact on point measurement of eddy covariance(EC) fluxes. The flux induced by SC and TOS has little influence on EC sensible heat flux, but great influence on EC latent heat flux. Under this circumstance, the area averaged heat flux cannot be represented by point measurement of flux by the EC method, especially just after irrigation in oases. Comparison of imbalance ratio(i.e., contribution of SC and TOS to the total flux) reveals that increased soil moisture in oases leads to a larger imbalance ratio as well as enhanced surface heterogeneity. Moreover,we found that the soil layer configuration at different depths has a negligible impact on the CBL flux properties.Bangjun CAO Shuwen ZHANG Deqin LI Yanlin LI Linfan ZHOU Jiemin WANG 2018Journal of Meteorological Research2018,32,3:4
18Phenolic Composition Analysis and Gene Expression in Developing Seeds of Yellow-and Black-seeded Brassica napus显示文摘Breeders have focused on yellow-seeded Brassica napus (rapeseed) for its better quality com- pared with the black-seeded variety. Moreover, flavonoids have been associated with this kind of rapeseed. In this study, we applied lipid chromatography-electrospray ionization mass spec- trometry (LC-ESI-MSn ) to compare flavonoids in developing seeds of natural black-seeded B. na- pus and yellow-seeded introgression lines selected from progenies of B. napus-Sinapis alba so- matic hybrids. Aside from the most abundant phenolic compounds (sinapine and sinapic acid) and 1, 2-disinapoylglucose, 16 different flavonoids were identified and quantified, including (-)- epicatechin, five monocharged oligomers of (-)-epicatechin ([DP 2]- , [DP 3]- , [DP 4] [DP 2]- B2 and [DP 2]- B5), quercetin, kaempferol, isorhamnetin-dihexoside, kaempferol-sinapoyl-trihexoside, isorhamnetin- sinapoyl-trihexoside, isorhamnetin-hexoside-sulfate, and isorhamnetin-3-O-glucoside. Most of the flavonoids accumulated with seed development, whereas some rapidly decreased during maturation. The content of these flavonoids was lower in the yellow-seeded materials than in the black seeds. In addition, variations of insoluble procyanidin oligomers and soluble phenolic acids were observed among both rapeseed varieties. Transcriptome changes of genes participating in the flavonoid pathway were discovered by quantitative reverse transcription polymerase chain reaction analysis. Consistent with flavonoid changes identified by high performance liquid chromatography analysis, the expression of most genes in the flavonoid biosynthetic pathway was also downregulated.Jinjin Jiang Yanlin Shao Aimin Li Chunliang Lu Yongtai Zhang Youping Wang 2013Journal of Integrative Plant Biology2013,55,6:4
19Substantial transition to clean household energy mix in rural China显示文摘The household energy mix has significant impacts on human health and climate,as it contributes greatly to many health-and climate-relevant air pollutants.Compared to the well-established urban energy statistical system,the rural household energy statistical system is incomplete and is often associated with high biases.Via a nationwide investigation,this study revealed high contributions to energy supply from coal and biomass fuels in the rural household energy sector,while electricity comprised∼20%.Stacking(the use of multiple sources of energy)is significant,and the average number of energy types was 2.8 per household.Compared to 2012,the consumption of biomass and coals in 2017 decreased by 45%and 12%,respectively,while the gas consumption amount increased by 204%.Increased gas and decreased coal consumptions were mainly in cooking,while decreased biomass was in both cooking(41%)and heating(59%).The time-sharing fraction of electricity and gases(E&G)for daily cooking grew,reaching 69%in 2017,but for space heating,traditional solid fuels were still dominant,with the national average shared fraction of E&G being only 20%.The non-uniform spatial distribution and the non-linear increase in the fraction of E&G indicated challenges to achieving universal access to modern cooking energy by 2030,particularly in less-developed rural and mountainous areas.In some non-typical heating zones,the increased share of E&G for heating was significant and largely driven by income growth,but in typical heating zones,the time-sharing fraction was<5%and was not significantly increased,except in areas with policy intervention.The intervention policy not only led to dramatic increases in the clean energy fraction for heating but also accelerated the clean cooking transition.Higher income,higher education,younger age,less energy/stove stacking and smaller family size positively impacted the clean energy transition.Guofeng Shen Rui Xiong Yanlin Tian Zhihan Luo Bahabaike Jiangtulu Wenjun Meng Wei Du Jing Meng Yuanchen Chen Bing Xue Bin Wang Yonghong Duan Jia Duo Fenggui Fan Lei Huang Tianzhen Ju Fenggui Liu Shunxin Li Xianli Liu Yungui Li Mu Wang Ying Nan Bo Pan Yanfang Pan Lizhi Wang Eddy Zeng Chao Zhan Yilin Chen Huizhong Shen Hefa Cheng Shu Tao 2022National Science Review2022,9,7:4
20Optimized pre-treatment of high strength food waste digestate by high content aluminum-nanocluster based magnetic coagulation显示文摘Coagulation-based pre-treatment efficiency of high strength digestate of food waste(HSDFW) anaerobic digestion is negated by organic ligand-catalyzed decomposition of coagulants. In this study, an efficient HSDFW pre-treatment method, magnetic seeds(MS) coagulation, was employed by using highly stable Keggin Al_(30) nanocluster(PAC_(30)), MS and polyacrylamide(PAM), and its operation was optimized by evaluating the performance of removing turbidity, total suspended solids(TSS), chemical oxygen demand(COD), and total phosphorous(TP) phosphate. Results showed that at the optimum dosage of 4.82 g/L, PAC_(30) demonstrated excellent removals as high as 98.93% ± 0.1% of turbidity, 98.04% ± 0.1% of TSS, 58.28% ± 0.3% of total COD, 99.98% ± 0.01% of TP and 99.50% ± 0.01% of dissolved phosphate, respectively. Apparent molecular weight(AMW) and three-dimensional excitation-emission matrix(3 D-EEM) fluorescence spectroscopy analyses demonstrated more efficient removal of dissolved organic matter(DOM), particularly non-biodegradable and hydrophobic components by PAC_(30) than commercial coagulant. The sedimentation was much improved from 40 min by coagulation/flocculation to about 5 min settling by MS coagulation. The PAC_(30) based magnetic coagulation(MC) presents theoretical guidance on a cost-effective and much less footprint pre-treatment alternative for high strength wastewater.Tharindu Ritigala Hailu Demissie Yanlin Chen Jiaxi Zheng Libing Zheng Jinxing Zhu Hua Fan Jiao Li Dongsheng Wang Sujithra KWeragoda Rohan Weerasooriya Yuansong Wei 2021Journal of Environmental Sciences2021,33,6:4
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