Background Cotton is an important cash crop in China and a key component of the global textile market.Verticil-lium wilt is a major factor affecting cotton yield.Single nucleotide polymorphism(SNP)markers and phenotyp...Background Cotton is an important cash crop in China and a key component of the global textile market.Verticil-lium wilt is a major factor affecting cotton yield.Single nucleotide polymorphism(SNP)markers and phenotypic data can be used to identify genetic markers and loci associated with cotton resistance to Verticillium wilt.We used eight upland cotton parent materials in this study to construct a multiparent advanced generation inter-cross(MAGIC)population comprising 320 lines.The Verticillium wilt resistance of the MAGIC population was identified in the green-house in 2019,and the average relative disease index(ARDI)was calculated.A genome-wide association study(GWAS)was performed to discover SNP markers/genes associated with Verticillium wilt resistance.Results ARDI of the MAGIC population showed wide variation,ranging from 16.7 to 79.4 across three replicates.This variation reflected a diverse range of resistance to Verticillium wilt within the population.Analysis of distribution pat-terns across the environments revealed consistent trends,with coefficients of variation between 12.25%and 21.96%.Families with higher ARDI values,indicating stronger resistance,were more common,likely due to genetic diver-sity and environmental factors.Population structure analysis divided the MAGIC population into three subgroups,with Group I showing higher genetic variation and Groups II and III displaying more uniform resistance performance.Principal component analysis(PCA)confirmed these divisions,highlighting the genetic diversity underlying Verticil-lium wilt resistance.Through GWAS,we identified 19 SNPs significantly associated with Verticillium wilt resistance,distributed across three chromosomes.The screening of candidate genes was performed on the transcriptome derived from resistant and susceptible cultivars,combined with gene annotation and tissue expression patterns,and two key candidate genes,Ghir_A01G006660 and Ghir_A02G008980,were found to be potentially associated with Verticillium wilt resistance.This suggests that these two candidate genes may play an important role in responding to Verticillium wilt.Conclusion This study aims to dissect the genetic basis of Verticillium wilt resistance in cotton by using a MAGIC population and GWAS.The study seeks to provide valuable genetic resources for marker-assisted breeding and enhance the understanding of resistance mechanisms to improve cotton resilience against Verticillium wilt.展开更多
One of the impediments in the genetic improvement of cotton fiber is the paucity of information about genes associated with fiber development.Availability of chromosome arm substitution line CS-
BACKGROUND AND PURPOSE We evaluated our experience in placing detachable coils in the management of spontaneous CCFs due to rupture of a primitive trigeminal artery. Methods A 48-year-old female presented with right c...BACKGROUND AND PURPOSE We evaluated our experience in placing detachable coils in the management of spontaneous CCFs due to rupture of a primitive trigeminal artery. Methods A 48-year-old female presented with right conjunctival chemosis and right abducens nerve paresis. Cerebral angiography demonstrated a right carotid-cavernous sinus fistula associated with persistent primitive trigeminal artery. Transvenous routes to the sinus were failed due to the tortuous facial vein. The fistula was treated by Matrix detachable coils and Fibered detachable coils through the transarterial approach. Results The patient was successfully treated by means of transarterial embolization, and symptoms improved within a week. Conclusions Although other techniques using a transvenous approach may also be useful, transarterial embolization with detachable coils should be a safe and effective method to immediately occlude the fistula.展开更多
We report a very rare case of mitral valve dissection and aorticleft ventricular tunnel caused by possible autoimmune vasculitis.We suspected Behcet’s disease in this patient.There was no obvious clinical evidence of...We report a very rare case of mitral valve dissection and aorticleft ventricular tunnel caused by possible autoimmune vasculitis.We suspected Behcet’s disease in this patient.There was no obvious clinical evidence of infective endocarditis.Echocardiography is the diagnostic tool of choice to recognize valvular dysfunction,related pathology and possible complications.The patient may require immunosuppressive therapy due to the high likelihood of recurrence perioperation period.展开更多
Objective:To evaluate the predictive value of the neutrophil⁃to⁃lymphocyte ratio(NLR)and the systemic immune⁃inflammation index(SII)in predicting patients with anti⁃melanoma differentiation⁃associated gene 5⁃positive(...Objective:To evaluate the predictive value of the neutrophil⁃to⁃lymphocyte ratio(NLR)and the systemic immune⁃inflammation index(SII)in predicting patients with anti⁃melanoma differentiation⁃associated gene 5⁃positive(anti⁃MDA5+)dermatomyositis(DM)develop into the rapidly progressive interstitial lung disease(RPILD).Methods:We retrospectively analyzed the clinical and laboratory data of 124 anti⁃MDA5+DM patients from the First Affiliated Hospital of Nanjing Medical University between March 2019 and September 2023.We identified independent risk factors associated with the development and mortality of RPILD with the Cox regression analysis,and determined the optimal cut⁃off values for predicting adverse outcomes with the receiver operating characteristic(ROC)curve analysis.Results:Among the 124 patients,36 patients(29.03%)developed RPILD,and 39 patients(31.45%)died during the follow⁃up period.The results of multivariate Cox regression analysis showed that the elevated NLR was an independent risk factor for RPILD development,while the elevated SII expression was independently associated with the increased mortality of RPILD.Based on the ROC curve analysis,NLR>6.12 was a predictor for RPILD,and SII>875.79 was associated with increased mortality risk of RPILD.Conclusion:Both NLR and SII are accessible,cost⁃effective,and reliable prognostic indicators for the prognosis of patients with anti⁃MDA5^(+)DM,providing a valuable guidance for clinical management and risk stratification of the disease.展开更多
With the popularization of social media,public opi-nion information on emergencies spreads rapidly on the Internet,the impact of negative public opinions on an event has become more significant.Based on the organizati...With the popularization of social media,public opi-nion information on emergencies spreads rapidly on the Internet,the impact of negative public opinions on an event has become more significant.Based on the organizational form of public opinion information,the knowledge graph is used to construct the knowledge base of public opinion risk cases on the emer-gency network.The emotion recognition model of negative pub-lic opinion information based on the bi-directional long short-term memory(BiLSTM)network is studied in the model layer design,and a linear discriminant analysis(LDA)topic extraction method combined with association rules is proposed to extract and mine the semantics of negative public opinion topics to real-ize further in-depth analysis of information topics.Focusing on public health emergencies,knowledge acquisition and knowl-edge processing of public opinion information are conducted,and the experimental results show that the knowledge graph framework based on the construction can facilitate in-depth theme evolution analysis of public opinion events,thus demon-strating important research significance for reducing online pub-lic opinion risks.展开更多
Joint probabilistic data association is an effective method for tracking multiple targets in clutter, but only the target kinematic information is used in measure-to-track association. If the kinematic likelihoods are...Joint probabilistic data association is an effective method for tracking multiple targets in clutter, but only the target kinematic information is used in measure-to-track association. If the kinematic likelihoods are similar for different closely spaced targets, there is ambiguity in using the kinematic information alone; the correct association probability will decrease in conventional joint probabilistic data association algorithm and track coalescence will occur easily. A modified algorithm of joint probabilistic data association with classification-aided is presented, which avoids track coalescence when tracking multiple neighboring targets. Firstly, an identification matrix is defined, which is used to simplify validation matrix to decrease computational complexity. Then, target class information is integrated into the data association process. Performance comparisons with and without the use of class information in JPDA are presented on multiple closely spaced maneuvering targets tracking problem. Simulation results quantify the benefits of classification-aided JPDA for improved multiple targets tracking, especially in the presence of association uncertainty in the kinematic measurement and target maneuvering. Simulation results indicate that the algorithm is valid.展开更多
Thermodynamic properties and electrochemical behaviors of gold and its associated elements, such as silver, copper, nickel and iron, in various complex agent solutions were studied. Within CS（NH2）2, S2O2-3 and SCN- ...Thermodynamic properties and electrochemical behaviors of gold and its associated elements, such as silver, copper, nickel and iron, in various complex agent solutions were studied. Within CS（NH2）2, S2O2-3 and SCN- systems, alkaline thiourea is the optimal nontoxic lixiviating agent substituting cyanide from the viewpoint of thermodynamics. The electrochemical study indicates that the anodic dissolution current densities of gold are 2.616, （1.805,） 1.267, 1.088, 0.556, and 0.145 mA·cm-2 respectively in the solutions of cyanide, alkaline thiourea containing Na2SiO3, SCN-, acidic thiourea, alkaline thiourea and thiosulfate at the potential of 0.500 V. Comparing various lixiviating agents, the alkaline thiourea solution containing Na2SiO3 is of prominent selectivity in leaching gold, in the potential range from 0.500 to 0.600 V, which is most efficient for leaching gold selectively instead of cyanide. The effect on leaching gold is similar to that in the cyanide system.展开更多
Doppler blind zone （DBZ） has a bad influence on the airborne early warning radar, although it has good detection performance for low altitude targets with pulse Doppler （PD） technology. In target tracking, the bli...Doppler blind zone （DBZ） has a bad influence on the airborne early warning radar, although it has good detection performance for low altitude targets with pulse Doppler （PD） technology. In target tracking, the blind zone can cause target tracking breakage easily. In order to solve this problem, a parallel particle filter （PF） algorithm based on multi-hypothesis motion models （MHMMs） is proposed. The algorithm produces multiple possible target motion models according to the DBZ constraint. Particles are updated with the constraint in each motion model. Once the first measurement from the target which reappears from DBZ falls into the particle cloud formed by any model, the measurementtrack association succeeds and track breakage is avoided. The simulation results show that on the condition of different DBZ ranges, a high association ratio can be got for targets with different maneuverability levels, which accordingly improves the tracking quality.展开更多
There are many proposed optimal or suboptimal al- gorithms to update out-of-sequence measurement（s） （OoSM（s）） for linear-Gaussian systems, but few algorithms are dedicated to track a maneuvering target in clutte...There are many proposed optimal or suboptimal al- gorithms to update out-of-sequence measurement（s） （OoSM（s）） for linear-Gaussian systems, but few algorithms are dedicated to track a maneuvering target in clutter by using OoSMs. In order to address the nonlinear OoSMs obtained by the airborne radar located on a moving platform from a maneuvering target in clut- ter, an interacting multiple model probabilistic data association （IMMPDA） algorithm with the OoSM is developed. To be practical, the algorithm is based on the Earth-centered Earth-fixed （ECEF） coordinate system where it considers the effect of the platform＇s attitude and the curvature of the Earth. The proposed method is validated through the Monte Carlo test compared with the perfor- mance of the standard IMMPDA algorithm ignoring the OoSM, and the conclusions show that using the OoSM can improve the track- ing performance, and the shorter the lag step is, the greater degree the performance is improved, but when the lag step is large, the performance is not improved any more by using the OoSM, which can provide some references for engineering application.展开更多
In this paper we put forward a new concept——the ore of associated gain element. It is thought that the theoretical index forecast of dressing and smelting should be the component part of contents of technological mi...In this paper we put forward a new concept——the ore of associated gain element. It is thought that the theoretical index forecast of dressing and smelting should be the component part of contents of technological mineralogy study. The relative problems of the representativeness of ore sample, the handling of study sample and the choice of test means, and the examination of element existance form in the ore, etc., are discussed.展开更多
Combretastatin A-1 phosphate （CA1P） is a tubulin polymerization inhibitor that binds to the colchicine- binding site of tubulin and shows potential anti-tumor activity to acute myelocytic leukemia as reported. We de...Combretastatin A-1 phosphate （CA1P） is a tubulin polymerization inhibitor that binds to the colchicine- binding site of tubulin and shows potential anti-tumor activity to acute myelocytic leukemia as reported. We demon- strated that CA1P also showed an outstanding anti-cancer effect on hepatocellular carcinoma （HCC） in vivo and in vitro. As determined by DCFH-DA dye and Western blot, CA1P induced ROS accumulation and apoptosis in HepG2 cells with the down-regulation of Mcl-1. Additonal western blot and immunofluorescence assays further indi- cated that CA1P inhibited Wnt/β-catenin pathway through GSK-3β activition with an increasing of Mcl phosphoryl- ation and subsequent degradation mediated by tubulin-dynactin p l50-AKT signaling pathway axis. Apoptosis of HepG2 cells induced by CA1P was reversed by the GSK-3β inhibitor （ CHIR-99021 ）. Furthermore, determined by immunohistochemistry of an orthotopic HCC tumor model, CA1P showed a significantly effect on tumor associated macrophage （TAM） apoptosis in vitro and eliminated TAM in tumor microenviroment in vivo, while the infiltration of Treg cells and expression of TGF-β were also altered. Adoptive transfer of macrophages reinstated tumor growth treated by CA1P. These results indicated that CA1P presented potent potential on the regulation of hepatocellular carcinoma cells and TAMs, and also revealed a novel anti-HCC mechanism of CA1P, which acted on both cancer cells and tumor microenvironment. The findings would be beneficial for exploring new application of anti-microtubu- lar drugs on oncotherapy.展开更多
There are many skarn deposits that occur in volcanic rocks as stratiform and lentoid bodies,for example the Lower Yangtze River Valley,Western Tianshan Mountains and Lhasa Terrane in China,the Nuuk in West Greeland an...There are many skarn deposits that occur in volcanic rocks as stratiform and lentoid bodies,for example the Lower Yangtze River Valley,Western Tianshan Mountains and Lhasa Terrane in China,the Nuuk in West Greeland and the Austroalpine Alps(e.g.Xv et al.,1984;Appel,1994;Raith and Stein,2000;Wang et al.,2001;Gu et al.,2007;Hou et al.,2011;Zhou et al.,2011;Jiang et al.,2012;Xu et al.,2010;Wang et al.,2012;Yu et al.,2011).展开更多
Objective To investigate the survival of different subgroups of pulmonary hypertension due to left heart disease(PH-LHD)in heart failure patients with reduced ejection fraction(HFrEF)and to detect possible hemodynamic...Objective To investigate the survival of different subgroups of pulmonary hypertension due to left heart disease(PH-LHD)in heart failure patients with reduced ejection fraction(HFrEF)and to detect possible hemodynamic variables associated with the prognosis of these patients.展开更多
China produces much tungsten metal every year. The tungsten deposits in China usually are low-grade and have complex mineralogy composition as well as many associated valuable elements. The associated elements include...China produces much tungsten metal every year. The tungsten deposits in China usually are low-grade and have complex mineralogy composition as well as many associated valuable elements. The associated elements include Sn, Mo, Bi, Cu, Pb, Zn, Sb, Be, Co, Au, Ag, Nb, Ta, Re, Sc, REE, Li, As, S, P and the nonmetallic minerals such as quartz, fluorite, feldspar, etc. Therefore, only the tungsten ore dressing is done in accordance with the ore properties based on the detailed and full process mineralogy study can the valuable elements be reasonably and fully recovered and the maximization of resource utilization as well as environment-friendly is achieved eventually. This paper summarizes the status quo of process mineralogy of tungsten and its associated elements in China, focuses on the process mineralogy studies on major tungsten ore types including tungsten-molybdenum associated ore, tungsten-tin polymetallic ore and tungsten-copper polymetallic ore, suggests the future process mineralogy research on tungsten and its associated elements.展开更多
OBJECTIVE To clarify the role of translocator protein 18 ku(TSPO)on cecum liga⁃tion and puncture(CLP)induced sepsis associat⁃ed encephalopathy(SAE)mice,which consis⁃tently demonstrated astrocyte activation and neu⁃roi...OBJECTIVE To clarify the role of translocator protein 18 ku(TSPO)on cecum liga⁃tion and puncture(CLP)induced sepsis associat⁃ed encephalopathy(SAE)mice,which consis⁃tently demonstrated astrocyte activation and neu⁃roinflammation.Background SAE,a brain dys⁃function,caused by systemic infection without clinical or laboratory evidence of direct infection.Most patients have symptoms such as long-term cognitive dysfunction.As the pathogenesis of SAE is very complex,neuroinflammation for SAE is one of the causes of the disease.TSPO as a marker of neuroinflammation that has the poten⁃tial to regulate neuroinflammation and SAE.METHODS The animal model of SAE was in⁃duced by CLP.TSPO ligands and TSPO knock⁃out mice were used for behavioral and molecular biology research.Survival rate of mice within 120 h on CLP mice was observed.The changes of cog⁃nitive function in mice were observed by Morris water maze and open field test.The changes of proinflammatory factors(IL-1β,TNF-α,IL-6)in hippocampus were observed by ELISA;Astro⁃cyte activation,marked by GFAP,in hippocam⁃pal was analyzed by tissue immunofluorescence and Western blotting.RESULTS Pretreatment with the TSPO ligands,XBD173 or PK11195,sig⁃nificantly improved the survival rate of CLP mice.The results of Morris water maze showed that TSPO ligands significantly increased the number of crossing the platform and the target quadrant time on CLP mice,suggesting that TSPO ligands may improve the learning and memory ability of CLP mice.Subsequent experiments revealed that TSPO ligands can reduce the inflammatory factors(IL-1β,TNF-α,IL-6)and astrocyte activa⁃tion in hippocampus of CLP mice.Similar results were also confirmed in TSPO knockout CLP mice,suggesting intervention of TSPO can reduce neuroinflammatory response and play a protec⁃tive role on SAE mice.CONCLUSION TSPO may play a critical role on SAE mice.Targeting TSPO by pharmacological means may improve the survival rate and cognitive function on CLP mice,which may through inhibiting astrocyte acti⁃vation and neuroinflammation in hippocampal.展开更多
We report the cloning and functional characterization of human cyclin L2, a novel member of the cyclin family. Human cyclin L2 shares significant homology to cyclin L1, K, T1, T2, and C, which are involved in transcri...We report the cloning and functional characterization of human cyclin L2, a novel member of the cyclin family. Human cyclin L2 shares significant homology to cyclin L1, K, T1, T2, and C, which are involved in transcriptional regulation via phosphorylation of the C-terminal domain of RNA polymerase Ⅱ. The cyclin L2 protein contains an N-terminal "cyclin box" and C-terminal dipeptide repeats of alternating arginines and serines, a hallmark of the SR family of splicing factors. A new isoform and the mouse homologue of human cyclin L2 have also been cloned in this study. Human cyclin L2 is expressed ubiquitously in normal human tissues and tumor cells. We show here that cyclin L2 co-localizes with splicing factors SC-35 and 9G8 within nuclear speckles and that it associates with hyperphosphorylated, but not hypophosphorylated, RNA polymerase Ⅱ and CDK p110 PITSLRE kinase via its N-terminal cyclin domains. It can also associate with the SC-35 and 9G8 through its RS repeat region. Recombinant cyclin L2 protein can stimulate in vitro mRNA splicing. Overexpression of human cyclin L2 suppresses the growth of human hepatocellular carcinoma SMMC 7721 cells both in vitro and in vivo, inducing cellular apoptosis. This process involves up-regulation of p53 and Bax and decreased expression of Bcl-2. The data suggest that cyclin L2 represents a new member of the cyclin family, which might regulate the transcription and RNA processing of certain apoptosis-related factors, resulting in tumor cell growth inhibition and apoptosis.展开更多
Due to the advantages of ant colony optimization （ACO） in solving complex problems, a new data association algorithm based on ACO in a cluttered environment called DACDA is proposed. In the proposed method, the conc...Due to the advantages of ant colony optimization （ACO） in solving complex problems, a new data association algorithm based on ACO in a cluttered environment called DACDA is proposed. In the proposed method, the concept for tour and the length of tour are redefined. Additionally, the directional information is incorporated into the proposed method because it is one of the most important factors that affects the performance of data association. Kalman filter is employed to estimate target states. Computer simulation results show that the proposed method could carry out data association in an acceptable CPU time, and the correct data association rate is higher than that obtained by the data association （DA） algorithm not combined with directional information.展开更多
While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observe...While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observed. The diurnal net photosynthetic rate(Pn) varied dramatically for all the plants studied. D. fragrans, Woodsia ilvensis and Urtica angustifolia all exhibited unimodal type Pn variation, with low Pn, weak photosynthetic capacity, and dramatic maximal photosynthesis(Pmax) changes. When compared to values for its associated plants, D. fragrans values were of intermediate level, indicating difficulty in adapting to its environment. Moreover, the nitrate reductase activity of D. fragrans was higher than that of only one species, Artemisia gmelinii. With increasing leaf maturity and chlorophyll content, D. fragrans exhibited declining LCP(light compensation point) and a relatively low LSP(light saturation point). Because of its overall relatively weak photosynthetic capacity, D. fragrans exhibited narrow ecological amplitude with respect to light adaptation.展开更多
基金supported by funding from the fund for National Key Research and Development Program of China(2023YFD2301203-05)National Natural Science Foundation of China(32260510)+3 种基金Special Financial Project for Seed Industry Development in the Autonomous Region(BNZJ2024-10,BNZJ2024-30)Key Project for Science and Technology Development of Shihezi city,Xinjiang Production and Construction Crops(2022NY01)Shihezi University high-level talent research project(RCZK202337)Science and Technol-ogy Planning of Shuanghe city,Xinjiang Production and Construction Crops(2021NY02).
文摘Background Cotton is an important cash crop in China and a key component of the global textile market.Verticil-lium wilt is a major factor affecting cotton yield.Single nucleotide polymorphism(SNP)markers and phenotypic data can be used to identify genetic markers and loci associated with cotton resistance to Verticillium wilt.We used eight upland cotton parent materials in this study to construct a multiparent advanced generation inter-cross(MAGIC)population comprising 320 lines.The Verticillium wilt resistance of the MAGIC population was identified in the green-house in 2019,and the average relative disease index(ARDI)was calculated.A genome-wide association study(GWAS)was performed to discover SNP markers/genes associated with Verticillium wilt resistance.Results ARDI of the MAGIC population showed wide variation,ranging from 16.7 to 79.4 across three replicates.This variation reflected a diverse range of resistance to Verticillium wilt within the population.Analysis of distribution pat-terns across the environments revealed consistent trends,with coefficients of variation between 12.25%and 21.96%.Families with higher ARDI values,indicating stronger resistance,were more common,likely due to genetic diver-sity and environmental factors.Population structure analysis divided the MAGIC population into three subgroups,with Group I showing higher genetic variation and Groups II and III displaying more uniform resistance performance.Principal component analysis(PCA)confirmed these divisions,highlighting the genetic diversity underlying Verticil-lium wilt resistance.Through GWAS,we identified 19 SNPs significantly associated with Verticillium wilt resistance,distributed across three chromosomes.The screening of candidate genes was performed on the transcriptome derived from resistant and susceptible cultivars,combined with gene annotation and tissue expression patterns,and two key candidate genes,Ghir_A01G006660 and Ghir_A02G008980,were found to be potentially associated with Verticillium wilt resistance.This suggests that these two candidate genes may play an important role in responding to Verticillium wilt.Conclusion This study aims to dissect the genetic basis of Verticillium wilt resistance in cotton by using a MAGIC population and GWAS.The study seeks to provide valuable genetic resources for marker-assisted breeding and enhance the understanding of resistance mechanisms to improve cotton resilience against Verticillium wilt.
文摘One of the impediments in the genetic improvement of cotton fiber is the paucity of information about genes associated with fiber development.Availability of chromosome arm substitution line CS-
文摘BACKGROUND AND PURPOSE We evaluated our experience in placing detachable coils in the management of spontaneous CCFs due to rupture of a primitive trigeminal artery. Methods A 48-year-old female presented with right conjunctival chemosis and right abducens nerve paresis. Cerebral angiography demonstrated a right carotid-cavernous sinus fistula associated with persistent primitive trigeminal artery. Transvenous routes to the sinus were failed due to the tortuous facial vein. The fistula was treated by Matrix detachable coils and Fibered detachable coils through the transarterial approach. Results The patient was successfully treated by means of transarterial embolization, and symptoms improved within a week. Conclusions Although other techniques using a transvenous approach may also be useful, transarterial embolization with detachable coils should be a safe and effective method to immediately occlude the fistula.
文摘We report a very rare case of mitral valve dissection and aorticleft ventricular tunnel caused by possible autoimmune vasculitis.We suspected Behcet’s disease in this patient.There was no obvious clinical evidence of infective endocarditis.Echocardiography is the diagnostic tool of choice to recognize valvular dysfunction,related pathology and possible complications.The patient may require immunosuppressive therapy due to the high likelihood of recurrence perioperation period.
文摘Objective:To evaluate the predictive value of the neutrophil⁃to⁃lymphocyte ratio(NLR)and the systemic immune⁃inflammation index(SII)in predicting patients with anti⁃melanoma differentiation⁃associated gene 5⁃positive(anti⁃MDA5+)dermatomyositis(DM)develop into the rapidly progressive interstitial lung disease(RPILD).Methods:We retrospectively analyzed the clinical and laboratory data of 124 anti⁃MDA5+DM patients from the First Affiliated Hospital of Nanjing Medical University between March 2019 and September 2023.We identified independent risk factors associated with the development and mortality of RPILD with the Cox regression analysis,and determined the optimal cut⁃off values for predicting adverse outcomes with the receiver operating characteristic(ROC)curve analysis.Results:Among the 124 patients,36 patients(29.03%)developed RPILD,and 39 patients(31.45%)died during the follow⁃up period.The results of multivariate Cox regression analysis showed that the elevated NLR was an independent risk factor for RPILD development,while the elevated SII expression was independently associated with the increased mortality of RPILD.Based on the ROC curve analysis,NLR>6.12 was a predictor for RPILD,and SII>875.79 was associated with increased mortality risk of RPILD.Conclusion:Both NLR and SII are accessible,cost⁃effective,and reliable prognostic indicators for the prognosis of patients with anti⁃MDA5^(+)DM,providing a valuable guidance for clinical management and risk stratification of the disease.
基金supported by the National Social Science Foundation Major Project(22&ZD135)the National Social Science Fund National Emergency Management System Construction Research Project(20VYJ061).
文摘With the popularization of social media,public opi-nion information on emergencies spreads rapidly on the Internet,the impact of negative public opinions on an event has become more significant.Based on the organizational form of public opinion information,the knowledge graph is used to construct the knowledge base of public opinion risk cases on the emer-gency network.The emotion recognition model of negative pub-lic opinion information based on the bi-directional long short-term memory(BiLSTM)network is studied in the model layer design,and a linear discriminant analysis(LDA)topic extraction method combined with association rules is proposed to extract and mine the semantics of negative public opinion topics to real-ize further in-depth analysis of information topics.Focusing on public health emergencies,knowledge acquisition and knowl-edge processing of public opinion information are conducted,and the experimental results show that the knowledge graph framework based on the construction can facilitate in-depth theme evolution analysis of public opinion events,thus demon-strating important research significance for reducing online pub-lic opinion risks.
基金Defense Advanced Research Project "the Techniques of Information Integrated Processing and Fusion" in the Eleventh Five-Year Plan (513060302).
文摘Joint probabilistic data association is an effective method for tracking multiple targets in clutter, but only the target kinematic information is used in measure-to-track association. If the kinematic likelihoods are similar for different closely spaced targets, there is ambiguity in using the kinematic information alone; the correct association probability will decrease in conventional joint probabilistic data association algorithm and track coalescence will occur easily. A modified algorithm of joint probabilistic data association with classification-aided is presented, which avoids track coalescence when tracking multiple neighboring targets. Firstly, an identification matrix is defined, which is used to simplify validation matrix to decrease computational complexity. Then, target class information is integrated into the data association process. Performance comparisons with and without the use of class information in JPDA are presented on multiple closely spaced maneuvering targets tracking problem. Simulation results quantify the benefits of classification-aided JPDA for improved multiple targets tracking, especially in the presence of association uncertainty in the kinematic measurement and target maneuvering. Simulation results indicate that the algorithm is valid.
文摘Thermodynamic properties and electrochemical behaviors of gold and its associated elements, such as silver, copper, nickel and iron, in various complex agent solutions were studied. Within CS（NH2）2, S2O2-3 and SCN- systems, alkaline thiourea is the optimal nontoxic lixiviating agent substituting cyanide from the viewpoint of thermodynamics. The electrochemical study indicates that the anodic dissolution current densities of gold are 2.616, （1.805,） 1.267, 1.088, 0.556, and 0.145 mA·cm-2 respectively in the solutions of cyanide, alkaline thiourea containing Na2SiO3, SCN-, acidic thiourea, alkaline thiourea and thiosulfate at the potential of 0.500 V. Comparing various lixiviating agents, the alkaline thiourea solution containing Na2SiO3 is of prominent selectivity in leaching gold, in the potential range from 0.500 to 0.600 V, which is most efficient for leaching gold selectively instead of cyanide. The effect on leaching gold is similar to that in the cyanide system.
基金supported by the Academy Innovation Fund Project (2013QNCX0101)
文摘Doppler blind zone （DBZ） has a bad influence on the airborne early warning radar, although it has good detection performance for low altitude targets with pulse Doppler （PD） technology. In target tracking, the blind zone can cause target tracking breakage easily. In order to solve this problem, a parallel particle filter （PF） algorithm based on multi-hypothesis motion models （MHMMs） is proposed. The algorithm produces multiple possible target motion models according to the DBZ constraint. Particles are updated with the constraint in each motion model. Once the first measurement from the target which reappears from DBZ falls into the particle cloud formed by any model, the measurementtrack association succeeds and track breakage is avoided. The simulation results show that on the condition of different DBZ ranges, a high association ratio can be got for targets with different maneuverability levels, which accordingly improves the tracking quality.
基金supported by the National Natural Science Foundation of China(61102168)
文摘There are many proposed optimal or suboptimal al- gorithms to update out-of-sequence measurement（s） （OoSM（s）） for linear-Gaussian systems, but few algorithms are dedicated to track a maneuvering target in clutter by using OoSMs. In order to address the nonlinear OoSMs obtained by the airborne radar located on a moving platform from a maneuvering target in clut- ter, an interacting multiple model probabilistic data association （IMMPDA） algorithm with the OoSM is developed. To be practical, the algorithm is based on the Earth-centered Earth-fixed （ECEF） coordinate system where it considers the effect of the platform＇s attitude and the curvature of the Earth. The proposed method is validated through the Monte Carlo test compared with the perfor- mance of the standard IMMPDA algorithm ignoring the OoSM, and the conclusions show that using the OoSM can improve the track- ing performance, and the shorter the lag step is, the greater degree the performance is improved, but when the lag step is large, the performance is not improved any more by using the OoSM, which can provide some references for engineering application.
文摘In this paper we put forward a new concept——the ore of associated gain element. It is thought that the theoretical index forecast of dressing and smelting should be the component part of contents of technological mineralogy study. The relative problems of the representativeness of ore sample, the handling of study sample and the choice of test means, and the examination of element existance form in the ore, etc., are discussed.
文摘Combretastatin A-1 phosphate （CA1P） is a tubulin polymerization inhibitor that binds to the colchicine- binding site of tubulin and shows potential anti-tumor activity to acute myelocytic leukemia as reported. We demon- strated that CA1P also showed an outstanding anti-cancer effect on hepatocellular carcinoma （HCC） in vivo and in vitro. As determined by DCFH-DA dye and Western blot, CA1P induced ROS accumulation and apoptosis in HepG2 cells with the down-regulation of Mcl-1. Additonal western blot and immunofluorescence assays further indi- cated that CA1P inhibited Wnt/β-catenin pathway through GSK-3β activition with an increasing of Mcl phosphoryl- ation and subsequent degradation mediated by tubulin-dynactin p l50-AKT signaling pathway axis. Apoptosis of HepG2 cells induced by CA1P was reversed by the GSK-3β inhibitor （ CHIR-99021 ）. Furthermore, determined by immunohistochemistry of an orthotopic HCC tumor model, CA1P showed a significantly effect on tumor associated macrophage （TAM） apoptosis in vitro and eliminated TAM in tumor microenviroment in vivo, while the infiltration of Treg cells and expression of TGF-β were also altered. Adoptive transfer of macrophages reinstated tumor growth treated by CA1P. These results indicated that CA1P presented potent potential on the regulation of hepatocellular carcinoma cells and TAMs, and also revealed a novel anti-HCC mechanism of CA1P, which acted on both cancer cells and tumor microenvironment. The findings would be beneficial for exploring new application of anti-microtubu- lar drugs on oncotherapy.
文摘There are many skarn deposits that occur in volcanic rocks as stratiform and lentoid bodies,for example the Lower Yangtze River Valley,Western Tianshan Mountains and Lhasa Terrane in China,the Nuuk in West Greeland and the Austroalpine Alps(e.g.Xv et al.,1984;Appel,1994;Raith and Stein,2000;Wang et al.,2001;Gu et al.,2007;Hou et al.,2011;Zhou et al.,2011;Jiang et al.,2012;Xu et al.,2010;Wang et al.,2012;Yu et al.,2011).
文摘Objective To investigate the survival of different subgroups of pulmonary hypertension due to left heart disease(PH-LHD)in heart failure patients with reduced ejection fraction(HFrEF)and to detect possible hemodynamic variables associated with the prognosis of these patients.
文摘China produces much tungsten metal every year. The tungsten deposits in China usually are low-grade and have complex mineralogy composition as well as many associated valuable elements. The associated elements include Sn, Mo, Bi, Cu, Pb, Zn, Sb, Be, Co, Au, Ag, Nb, Ta, Re, Sc, REE, Li, As, S, P and the nonmetallic minerals such as quartz, fluorite, feldspar, etc. Therefore, only the tungsten ore dressing is done in accordance with the ore properties based on the detailed and full process mineralogy study can the valuable elements be reasonably and fully recovered and the maximization of resource utilization as well as environment-friendly is achieved eventually. This paper summarizes the status quo of process mineralogy of tungsten and its associated elements in China, focuses on the process mineralogy studies on major tungsten ore types including tungsten-molybdenum associated ore, tungsten-tin polymetallic ore and tungsten-copper polymetallic ore, suggests the future process mineralogy research on tungsten and its associated elements.
基金Joint Funds for the Innovation of Science and Technology of Fujian Province(2019Y9009)and Natural Science Foundation of Fujian Province(2020J01618)。
文摘OBJECTIVE To clarify the role of translocator protein 18 ku(TSPO)on cecum liga⁃tion and puncture(CLP)induced sepsis associat⁃ed encephalopathy(SAE)mice,which consis⁃tently demonstrated astrocyte activation and neu⁃roinflammation.Background SAE,a brain dys⁃function,caused by systemic infection without clinical or laboratory evidence of direct infection.Most patients have symptoms such as long-term cognitive dysfunction.As the pathogenesis of SAE is very complex,neuroinflammation for SAE is one of the causes of the disease.TSPO as a marker of neuroinflammation that has the poten⁃tial to regulate neuroinflammation and SAE.METHODS The animal model of SAE was in⁃duced by CLP.TSPO ligands and TSPO knock⁃out mice were used for behavioral and molecular biology research.Survival rate of mice within 120 h on CLP mice was observed.The changes of cog⁃nitive function in mice were observed by Morris water maze and open field test.The changes of proinflammatory factors(IL-1β,TNF-α,IL-6)in hippocampus were observed by ELISA;Astro⁃cyte activation,marked by GFAP,in hippocam⁃pal was analyzed by tissue immunofluorescence and Western blotting.RESULTS Pretreatment with the TSPO ligands,XBD173 or PK11195,sig⁃nificantly improved the survival rate of CLP mice.The results of Morris water maze showed that TSPO ligands significantly increased the number of crossing the platform and the target quadrant time on CLP mice,suggesting that TSPO ligands may improve the learning and memory ability of CLP mice.Subsequent experiments revealed that TSPO ligands can reduce the inflammatory factors(IL-1β,TNF-α,IL-6)and astrocyte activa⁃tion in hippocampus of CLP mice.Similar results were also confirmed in TSPO knockout CLP mice,suggesting intervention of TSPO can reduce neuroinflammatory response and play a protec⁃tive role on SAE mice.CONCLUSION TSPO may play a critical role on SAE mice.Targeting TSPO by pharmacological means may improve the survival rate and cognitive function on CLP mice,which may through inhibiting astrocyte acti⁃vation and neuroinflammation in hippocampal.
文摘We report the cloning and functional characterization of human cyclin L2, a novel member of the cyclin family. Human cyclin L2 shares significant homology to cyclin L1, K, T1, T2, and C, which are involved in transcriptional regulation via phosphorylation of the C-terminal domain of RNA polymerase Ⅱ. The cyclin L2 protein contains an N-terminal "cyclin box" and C-terminal dipeptide repeats of alternating arginines and serines, a hallmark of the SR family of splicing factors. A new isoform and the mouse homologue of human cyclin L2 have also been cloned in this study. Human cyclin L2 is expressed ubiquitously in normal human tissues and tumor cells. We show here that cyclin L2 co-localizes with splicing factors SC-35 and 9G8 within nuclear speckles and that it associates with hyperphosphorylated, but not hypophosphorylated, RNA polymerase Ⅱ and CDK p110 PITSLRE kinase via its N-terminal cyclin domains. It can also associate with the SC-35 and 9G8 through its RS repeat region. Recombinant cyclin L2 protein can stimulate in vitro mRNA splicing. Overexpression of human cyclin L2 suppresses the growth of human hepatocellular carcinoma SMMC 7721 cells both in vitro and in vivo, inducing cellular apoptosis. This process involves up-regulation of p53 and Bax and decreased expression of Bcl-2. The data suggest that cyclin L2 represents a new member of the cyclin family, which might regulate the transcription and RNA processing of certain apoptosis-related factors, resulting in tumor cell growth inhibition and apoptosis.
文摘Due to the advantages of ant colony optimization （ACO） in solving complex problems, a new data association algorithm based on ACO in a cluttered environment called DACDA is proposed. In the proposed method, the concept for tour and the length of tour are redefined. Additionally, the directional information is incorporated into the proposed method because it is one of the most important factors that affects the performance of data association. Kalman filter is employed to estimate target states. Computer simulation results show that the proposed method could carry out data association in an acceptable CPU time, and the correct data association rate is higher than that obtained by the data association （DA） algorithm not combined with directional information.
基金Supported by Funding(Topic 31072091/C020601)from the NSFC(Natural Science Foundation of China)(20082010)
文摘While comparing photosynthetic characteristics of Dryopteris fragrans(L.) Schott to those of several commonly associated plants in its native community, coordination between D. fragrans and its environment was observed. The diurnal net photosynthetic rate(Pn) varied dramatically for all the plants studied. D. fragrans, Woodsia ilvensis and Urtica angustifolia all exhibited unimodal type Pn variation, with low Pn, weak photosynthetic capacity, and dramatic maximal photosynthesis(Pmax) changes. When compared to values for its associated plants, D. fragrans values were of intermediate level, indicating difficulty in adapting to its environment. Moreover, the nitrate reductase activity of D. fragrans was higher than that of only one species, Artemisia gmelinii. With increasing leaf maturity and chlorophyll content, D. fragrans exhibited declining LCP(light compensation point) and a relatively low LSP(light saturation point). Because of its overall relatively weak photosynthetic capacity, D. fragrans exhibited narrow ecological amplitude with respect to light adaptation.
