In recent years, Japan, and especially rural areas have faced the growing problems of debt-ridden local railway lines along with the population decline and aging population. Therefore, it is best to consider the disco...In recent years, Japan, and especially rural areas have faced the growing problems of debt-ridden local railway lines along with the population decline and aging population. Therefore, it is best to consider the discontinuation of local railway lines and introduce replacement buses to secure the transportation methods of the local people especially in rural areas. Based on the above background, targeting local railway lines that may be discontinued in the near future, appropriate bus stops when provided with potential bus stops were selected, the present study proposed a method that introduces routes for railway replacement buses adopting ant colony optimization (ACO). The improved ACO was designed and developed based on the requirements set concerning the route length, number of turns, road width, accessibility of railway lines and zones without bus stops as well as the constraint conditions concerning the route length, number of turns and zones without bus stops. Original road network data were generated and processed adopting a geographic information systems (GIS), and these are used to search for the optimal route for railway replacement buses adopting the improved ACO concerning the 8 zones on the target railway line (JR Kakogawa line). By comparing the improved ACO with Dijkstra’s algorithm, its relevance was verified and areas needing further improvements were revealed.展开更多
The women of the 1930s in the Chinese TV serials deduct inspiring stories.They play different roles in the big wealthy families such as mothers-in-law,daughters-in-law,and maidservants.There are unceasing conflicts be...The women of the 1930s in the Chinese TV serials deduct inspiring stories.They play different roles in the big wealthy families such as mothers-in-law,daughters-in-law,and maidservants.There are unceasing conflicts between these women,because of their struggle for men's love,wealth or social position.The theme of their stories is always about fertility,love,kindness and evil,with the ending being either comic or tragic.The stories of various kinds of women of the 1930s in the Chinese TV serials decorate and enrich the lives of many of us latecomers and their names are passed on from generation to generation.展开更多
All previously reported bacterial species which are capable of lysing harmful algae have been isolated from coastal environments in which harmful algae blooms have occurred. Due to the low concentration of alga-lysing...All previously reported bacterial species which are capable of lysing harmful algae have been isolated from coastal environments in which harmful algae blooms have occurred. Due to the low concentration of alga-lysing bacteria in an algal bloom, it is difficult to isolate the alga-lysing bacteria by existing methods. In this paper, two algae-lysing bacterial strains, P01 and P03, have been isolated from a biosystem immobilized on a sponge that was highly effective in removing algae and microcystins. Their lysing modes and effects on Microcystis aeruginosa have been studied. The results show that the degradation processes of these two strains for M. aeruginosa accorded with a first-order reaction model when the chlorophylla concentration was in the range from 0 to 1000 μgL-1. The degradation rate constants were 0.1067, 0.1274 and 0.2792 for P01 and0.0683, 0.0744 and 0.028 97 for P03, when the bacterial densities were 8.6 × 105, 8.6 × 106 and 8.6 × 107cells mL-1 respectively. Moreover, the two bacterial strains had favourable lytic effects not only on M. aeruginosa , but also on Chlorella and Scene-desmus. Their lytic effect on M. aeruginosa did not require physical cell to cell contact, but proceeded by the production of an extracellular product. The bacterial strains were identified as Bacillus species by PCR amplification of the 16S rRNA gene, BLAST analysis, and comparison with sequences in the GenBank nucleotide database.展开更多
Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s disease.Transplantation of midbrain dopaminergic progenitor cells is a p...Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s disease.Transplantation of midbrain dopaminergic progenitor cells is a promising treatment for Parkinson’s disease.However,transplanted cells can be injured by mechanical damage during handling and by changes in the transplantation niche.Here,we developed a one-step biomanufacturing platform that uses small-aperture gelatin microcarriers to produce beads carrying midbrain dopaminergic progenitor cells.These beads allow midbrain dopaminergic progenitor cell differentiation and cryopreservation without digestion,effectively maintaining axonal integrity in vitro.Importantly,midbrain dopaminergic progenitor cell bead grafts showed increased survival and only mild immunoreactivity in vivo compared with suspended midbrain dopaminergic progenitor cell grafts.Overall,our findings show that these midbrain dopaminergic progenitor cell beads enhance the effectiveness of neuronal cell transplantation.展开更多
Since the publication of the Good Earth in 1922, Pearl S, Buck published another two novels based on the same theme and they were called the House of Earth Trilogy. The House of Earth Trilogy used as a window to under...Since the publication of the Good Earth in 1922, Pearl S, Buck published another two novels based on the same theme and they were called the House of Earth Trilogy. The House of Earth Trilogy used as a window to understand China for the westerners at that time. And it had a great impact on the whole world. People gave two different views on her success of winning so many awards. Some thought that she wrote what she knew and her works were based on her own experiences. But others said that she was a foreigner and her values, her distinct aesthetic views would affect her writing. So, some of her depictions, to some extent, were untruthful and distorted. The aim of writing this thesis is to give an objective judgment on the Good Earth, and make it easier for us to communicate with the westerners on literature.展开更多
A new rapeseed TGMS line 402S has been bred through six years with seven generations by hybridization and systematic breeding.402S possesses the similar thermo-sensitive male sterility to its female parent Xiangyou 91...A new rapeseed TGMS line 402S has been bred through six years with seven generations by hybridization and systematic breeding.402S possesses the similar thermo-sensitive male sterility to its female parent Xiangyou 91S which performed fertile,partially sterile and sterile throughout the flowering stage,and resembles its male parent Zhongshuang 4 on agronomic traits.And 402S has the double-low (low erutic acid and low glucosinolate) quality like its original parents.展开更多
On the basis of hypothesis of replacement and the vector formula of Newton’s law for a viscous fluid the way of a finding of resistance a slow flow by an incompressible fluid of bodies of the various form is represen...On the basis of hypothesis of replacement and the vector formula of Newton’s law for a viscous fluid the way of a finding of resistance a slow flow by an incompressible fluid of bodies of the various form is represented. Application of an offered way to calculation of a flow of various bodies is shown: a sphere, a cylinder, a oblong ellipsoid, a flat plate. Comparison with results of other authors is given.展开更多
By processing S-wave data from the Fanshi-Huai’an-Taipusiqi DSS profile,which is a three-component,wide-angle reflection/refraction profile,and in the light of the results from P-wave interpretation,two-dimensional(2...By processing S-wave data from the Fanshi-Huai’an-Taipusiqi DSS profile,which is a three-component,wide-angle reflection/refraction profile,and in the light of the results from P-wave interpretation,two-dimensional(2-D)structures of the crust and upper mantle are presented,including S-wave velocity Vs and the physical parameter of medium-Poisson’s ratio a.Taking other geological and geophysical information into account,and with reference to the results from petrophysical experiments at home and abroad,we carried out interpretation and inference with respect to deep crustal structure,tectonics,and lithologic characters.It has been concluded that in the upper and middle crust,a values are mostly not greater than 0.25,and rocks,which generally assume brittle,are mainly composed of granite; the rocks in the lower layer of the upper crust between Yangyuan-Huai’an containing inorganic CO2 itself releases carbon; for the rocks in the lower crust and crust-mantle transitional zone,which are comparatively展开更多
The man-induced sediment disaster includes material erosion, transportation and accumulation by human activities. It possesses special attribute in sociology and disaster science. In accordance with human activities, ...The man-induced sediment disaster includes material erosion, transportation and accumulation by human activities. It possesses special attribute in sociology and disaster science. In accordance with human activities, geomorphologic location, behavior and particular, the man-induced sediment disaster can be divided into 4 types: the drainage network, slope and gully, channel and plain-estuary-coastline. Each type includes erosion, transportation, accumulation, complexity and cascading. Based on human activity, geomorphology, sediment mechanics and catastrophology, the man-induced sediment disaster is characterized as follows: (1) accelerating tendency with geographical zoning back-ground; (2) non-order characters by blind action without special technical training; (3) gradually and sharply changing with human environment vibration; and (4) complexity and non-linear figure, etc. One of the reasons leading to man-induced sediment disaster is human environment vibration.展开更多
To obtain a better Vinogradov's bound, assistant function with two or three zeros and all Dirichlet's characters has been evaluated. Assistant function g(X1,X2,X3,X4)with four zeros and all nonprincipal charac...To obtain a better Vinogradov's bound, assistant function with two or three zeros and all Dirichlet's characters has been evaluated. Assistant function g(X1,X2,X3,X4)with four zeros and all nonprincipal characters but X1X2X3X4 is constructed and evaluated in the paper. And the constant obtained is 8.395 511 841 994.展开更多
Objective:To investigate the effects of sevoflurane inhalation general anesthesia on serum IL-6,brain injury protein S100βand coagulation function in elderly patients undergoing total hip arthroplasty.Method:From May...Objective:To investigate the effects of sevoflurane inhalation general anesthesia on serum IL-6,brain injury protein S100βand coagulation function in elderly patients undergoing total hip arthroplasty.Method:From May 2017 to May 2019,84 patients,age 60-75 underwent total hip arthroplasty in our hospital.were randomly divided into two groups:group A(n=42)and group B(n=42).Group A was maintained with sevoflurane inhalation by general anesthesia and group B with propofol by intravenous anesthesia.The surgical related indexes and postoperative complications in the two groups were compared.The level of serum IL-6,S100β,Coagulation function index[platelet count(PLT),Fibrinogen(FIB),plasma D-dimer(D-D),activated partial enzyme activity time(APTT),prothrombin time(PT)],MMSE score and MoCA score were compared between two groups before and after operation.Results:There was no significant difference in anesthesia time,operation time,intraoperative bleeding and postoperative drainage(P>0.05).1h,1d and 7d after operation,the level of PLT,D-D and FIB in group A were significantly lower than that in group B(P<0.05),PT and APTT were significantly higher than that in group B(P<0.05).1h,1d and 7d after operation,the level of IL-6,S100βin group A were significantly lower than that in group B(P<0.05).1d after operation,the MMSE and MoCA scores in group B were significantly lower than those in group A(P<0.05).The incidence of lower extremity deep venous thrombosis(2.38%)and cognitive impairment(2.38%)in group A was lower than that in group B(14.29%,16.67%)(t1=3.896,P1=0.048;t2=4.974,P2=0.026).Conclusion:sevoflurane anesthesia can reduce the incidence of deep venous thrombosis and cognitive impairment of the lower extremity after operation in elderly patients with thr,stabilize the coagulation index of patients,and downregulate the expression of il-6 and S100β.展开更多
OBJECTIVE To compare the outcomes of transapical transcatheter aortic valve replacement(TA-TAVR)and surgical aortic valve replacement(SAVR)using a large US population sample.METHODS The U.S.National Inpatient Sample w...OBJECTIVE To compare the outcomes of transapical transcatheter aortic valve replacement(TA-TAVR)and surgical aortic valve replacement(SAVR)using a large US population sample.METHODS The U.S.National Inpatient Sample was queried for all patients who underwent TA-TAVR or SAVR during the years2016-2017.The primary outcome was all-cause in-hospital mortality.Secondary outcomes were in-hospital stroke,pericardiocentesis,pacemaker insertion,mechanical ventilation,vascular complications,major bleeding,acute kidney injury,length of stay,and cost of hospitalization.Outcomes were modeled using multi-variable logistic regression for binary outcomes and generalized linear models for continuous outcomes.RESULTS A total of 1560 TA-TAVR and 44,280 SAVR patients were included.Patients who underwent TA-TAVR were older and frailer.Compared to SAVR,TA-TAVR correlated with a higher mortality(4.5%vs.2.7%,effect size(SMD)=0.1)and higher periprocedural complications.Following multivariable analysis,both TA-TAVR and SAVR had a similar adjusted risk for in-hospital mortality.TA-TAVR correlated with lower odds of bleeding with(adjusted OR(aOR)=0.26;95%CI:0.18-0.38;P<0.001),and a shorter length of stay(adjusted mean ratio(aMR)=0.77;95%CI:0.69-0.84;P<0.001),but higher cost(aMR=1.18;95%CI:1.10-1.28;P<0.001).No significant differences in other study outcomes.In subgroup analysis,TA-TAVR in patients with chronic lung disease had higher odds for mortality(aOR=3.11;95%CI:1.37-7.08;P=0.007).CONCLUSION The risk-adjusted analysis showed that TA-TAVR has no advantage over SAVR except for patients with chronic lung disease where TA-TAVR has higher mortality.展开更多
To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 exper...To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 experimental and one control diet were considered. Experimental diets of post-larvae were developed from unconventional ingredients in which fishmeal was completely replaced by a mixture of brewer’s yeast, chicken viscera and maggots. These foods were tested on Clarias gariepinus post-larvae with an initial average weight of 80 ± 1 mg. 1500 fish individuals were equally distributed in 15 concrete basins with a volume of 500 L forming five treatments in triplicate. Fish individuals were fed, manually at a ration rate of 20%, four times per day. The specific growth rates were 8.38%/day in imported food and 6.35%/day in the experimental food receiving 45.5% of protein from unconventional meal. Similar results were obtained with the feed consumption index. These encouraging results show that it is possible to partially or completely replace fishmeal in catfish feed and obtain an economically profitable production. The recovery of waste such as chicken viscera, brewer’s yeast and soybean meal in fish food formulation as tested in this study is a good contribution to environmental sanitation.展开更多
After trace Sm^3+ ions and Gd^3+ ions doping, the emission intensity of red phosphors Y2O2S: Eu^3 + was enhanced and the voltage character (relation between emission intensity and excitation voltage) was improve...After trace Sm^3+ ions and Gd^3+ ions doping, the emission intensity of red phosphors Y2O2S: Eu^3 + was enhanced and the voltage character (relation between emission intensity and excitation voltage) was improved while the other properties of physics and chemistry were not changed. The origins of enhancement and improvement are discussed. Probably the distortion and the defect of crystals are decreased by the substitution of Gd^3+ for Y^3+ instead of Eu^3+ for Y^3+ , and thus the Eu^3+ crystal field is improved, and radiationless process and energy loss resulted from crystal defect are weakened, which leads to increased luminescence intensity and voltage character improvement. The overlapping fluorescent spectra of Y2O2S: Sm^3+ emission and Y2O2S:Eu^3+ excitation as well as Eu^3 + excitation spectra transitions spectra lead to energy transfer from Sm^3 + sensitization of Sm^3+ ions fectively. containing Sm^3+ excitation the possibility of resonance ions to Eu^3+ ions, and the to Eu^3+ ions is achieved effectively.展开更多
To the editor:Liver transplantation is the only cure for patients with endstage liver disease.It is however an ultra-major surgery which is physiologically challenging to the cardiopulmonary function of the patients.H...To the editor:Liver transplantation is the only cure for patients with endstage liver disease.It is however an ultra-major surgery which is physiologically challenging to the cardiopulmonary function of the patients.Hence,in patients who also have valvular heart disease or coronary artery disease,liver transplantation would be con-展开更多
This article deals with the biochemical characteristics of varieties of Saint Mary’s Thistle such as Panacea, Debut and Samaryanka. Based on the studies, it was found that the highest oil content was found in the spe...This article deals with the biochemical characteristics of varieties of Saint Mary’s Thistle such as Panacea, Debut and Samaryanka. Based on the studies, it was found that the highest oil content was found in the species Debut (26%). <span style="font-family:Verdana;">The lowest oil content was observed in the variety </span><span style="font-family:Verdana;">Samaryanka</span><span style="font-family:Verdana;"> (19%). The highest protein content and the sum of total amino acids in the seeds of St. Mary’s Thistle varieties were found in the variety Debut (131.1), and the lowest indication was observed in the species Samaryanka (79.2). By the number of replaceable amino acids existing in the seeds of the species of St. Mary’s Thistle, it was found in the Varieties Debut (126.3), and the lowest indication was observed in the variety Samaryanka (112). Based on the results of studies and the noted biochemical characteristics and varietal differences of the St. Mary’s Thistle, the possibility and expediency of expanding the crops of this species in the soil and climatic conditions of the Khorezm region are suggested. The research was conducted 2017-2019 y.</span>展开更多
Most of the Domestic and foreign studies of Gulliver's Travels focus on the irony of the novel, there are few studies on the character of Gulliver. This paper will study the changes of Gulliver's character thr...Most of the Domestic and foreign studies of Gulliver's Travels focus on the irony of the novel, there are few studies on the character of Gulliver. This paper will study the changes of Gulliver's character through the analysis of his travels in the four different countries, in order to contribute to a better understanding of Gulliver.展开更多
A Portrait of the Artist as a Young Man is the first novel of stream of consciousness in western literature history, it mainly shows the protagonist, Stephen Dedalus' s journeys from childhood to adulthood. This p...A Portrait of the Artist as a Young Man is the first novel of stream of consciousness in western literature history, it mainly shows the protagonist, Stephen Dedalus' s journeys from childhood to adulthood. This paper aims at a better understanding of Stephen Dedalus, and it analyzes his character traits in literature analysis method, textual analysis method and Freud's theory of personality structure and is useful for further study.展开更多
This article is devoted to the thermophysical and mechanical study of an eco-material, poto-poto. The objective is to study the influence of the addition of bamboo fibers on the thermophysical properties of the materi...This article is devoted to the thermophysical and mechanical study of an eco-material, poto-poto. The objective is to study the influence of the addition of bamboo fibers on the thermophysical properties of the material, while verifying that it complies with the mechanical standards in Cameroon. A double study is therefore carried out: a mechanical characterization whose objective is to determine the mechanical properties (compressive strength, flexural strength and Young’s modulus) and a thermophysical characterization whose objective is to determine the thermal conductivity. For the thermophysical characterization, the asymmetric hot plane experimental setup based on 1D quadrupole modelling was developed and simulated for the estimation of thermal effusivity E and volume heat capacity ρCp. The obtained experimental results show that the apparent thermal conductivity of the developed materials decreases with increasing fibers. Although the reference material (0% fibers) has a much higher conductivity than the ordinary sand block (1.15 Wm<sup>-1</sup> K<sup>-1</sup>), the addition of fibers, already at 2%, contributes to decrease this conductivity (0.95 Wm<sup>-1</sup> K<sup>-1</sup>). From the point of view of thermal insulation and energy savings, the thermal conductivity results obtained show that the use of these materials with a maximum fibercontent of 6% would be a better thermal insulator than sand block or compressed earth brick. The compressive strength obtained is such that Rc > 0.6 MPa. All the materials developed meet the design standards when used as infill.展开更多
文摘In recent years, Japan, and especially rural areas have faced the growing problems of debt-ridden local railway lines along with the population decline and aging population. Therefore, it is best to consider the discontinuation of local railway lines and introduce replacement buses to secure the transportation methods of the local people especially in rural areas. Based on the above background, targeting local railway lines that may be discontinued in the near future, appropriate bus stops when provided with potential bus stops were selected, the present study proposed a method that introduces routes for railway replacement buses adopting ant colony optimization (ACO). The improved ACO was designed and developed based on the requirements set concerning the route length, number of turns, road width, accessibility of railway lines and zones without bus stops as well as the constraint conditions concerning the route length, number of turns and zones without bus stops. Original road network data were generated and processed adopting a geographic information systems (GIS), and these are used to search for the optimal route for railway replacement buses adopting the improved ACO concerning the 8 zones on the target railway line (JR Kakogawa line). By comparing the improved ACO with Dijkstra’s algorithm, its relevance was verified and areas needing further improvements were revealed.
文摘The women of the 1930s in the Chinese TV serials deduct inspiring stories.They play different roles in the big wealthy families such as mothers-in-law,daughters-in-law,and maidservants.There are unceasing conflicts between these women,because of their struggle for men's love,wealth or social position.The theme of their stories is always about fertility,love,kindness and evil,with the ending being either comic or tragic.The stories of various kinds of women of the 1930s in the Chinese TV serials decorate and enrich the lives of many of us latecomers and their names are passed on from generation to generation.
基金This study was supported by the Sino Japan Science Cooperative Program (Grant No.003250103) Special Funds for PhD Research Station of University (Grant No. 20020422045)Science Foundation of Shandong Province (Grant No. Z2003B01 ).
文摘All previously reported bacterial species which are capable of lysing harmful algae have been isolated from coastal environments in which harmful algae blooms have occurred. Due to the low concentration of alga-lysing bacteria in an algal bloom, it is difficult to isolate the alga-lysing bacteria by existing methods. In this paper, two algae-lysing bacterial strains, P01 and P03, have been isolated from a biosystem immobilized on a sponge that was highly effective in removing algae and microcystins. Their lysing modes and effects on Microcystis aeruginosa have been studied. The results show that the degradation processes of these two strains for M. aeruginosa accorded with a first-order reaction model when the chlorophylla concentration was in the range from 0 to 1000 μgL-1. The degradation rate constants were 0.1067, 0.1274 and 0.2792 for P01 and0.0683, 0.0744 and 0.028 97 for P03, when the bacterial densities were 8.6 × 105, 8.6 × 106 and 8.6 × 107cells mL-1 respectively. Moreover, the two bacterial strains had favourable lytic effects not only on M. aeruginosa , but also on Chlorella and Scene-desmus. Their lytic effect on M. aeruginosa did not require physical cell to cell contact, but proceeded by the production of an extracellular product. The bacterial strains were identified as Bacillus species by PCR amplification of the 16S rRNA gene, BLAST analysis, and comparison with sequences in the GenBank nucleotide database.
基金supported by the National Key Research and Development Program of China,Nos.2017YFE0122900(to BH),2019YFA0110800(to WL),2019YFA0903802(to YW),2021YFA1101604(to LW),2018YFA0108502(to LF),and 2020YFA0804003(to JW)the National Natural Science Foundation of China,Nos.31621004(to WL,BH)and 31970821(to YW)+1 种基金CAS Project for Young Scientists in Basic Research,No.YSBR-041(to YW)Joint Funds of the National Natural Science Foundation of China,No.U21A20396(to BH)。
文摘Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s disease.Transplantation of midbrain dopaminergic progenitor cells is a promising treatment for Parkinson’s disease.However,transplanted cells can be injured by mechanical damage during handling and by changes in the transplantation niche.Here,we developed a one-step biomanufacturing platform that uses small-aperture gelatin microcarriers to produce beads carrying midbrain dopaminergic progenitor cells.These beads allow midbrain dopaminergic progenitor cell differentiation and cryopreservation without digestion,effectively maintaining axonal integrity in vitro.Importantly,midbrain dopaminergic progenitor cell bead grafts showed increased survival and only mild immunoreactivity in vivo compared with suspended midbrain dopaminergic progenitor cell grafts.Overall,our findings show that these midbrain dopaminergic progenitor cell beads enhance the effectiveness of neuronal cell transplantation.
文摘Since the publication of the Good Earth in 1922, Pearl S, Buck published another two novels based on the same theme and they were called the House of Earth Trilogy. The House of Earth Trilogy used as a window to understand China for the westerners at that time. And it had a great impact on the whole world. People gave two different views on her success of winning so many awards. Some thought that she wrote what she knew and her works were based on her own experiences. But others said that she was a foreigner and her values, her distinct aesthetic views would affect her writing. So, some of her depictions, to some extent, were untruthful and distorted. The aim of writing this thesis is to give an objective judgment on the Good Earth, and make it easier for us to communicate with the westerners on literature.
文摘A new rapeseed TGMS line 402S has been bred through six years with seven generations by hybridization and systematic breeding.402S possesses the similar thermo-sensitive male sterility to its female parent Xiangyou 91S which performed fertile,partially sterile and sterile throughout the flowering stage,and resembles its male parent Zhongshuang 4 on agronomic traits.And 402S has the double-low (low erutic acid and low glucosinolate) quality like its original parents.
文摘On the basis of hypothesis of replacement and the vector formula of Newton’s law for a viscous fluid the way of a finding of resistance a slow flow by an incompressible fluid of bodies of the various form is represented. Application of an offered way to calculation of a flow of various bodies is shown: a sphere, a cylinder, a oblong ellipsoid, a flat plate. Comparison with results of other authors is given.
文摘By processing S-wave data from the Fanshi-Huai’an-Taipusiqi DSS profile,which is a three-component,wide-angle reflection/refraction profile,and in the light of the results from P-wave interpretation,two-dimensional(2-D)structures of the crust and upper mantle are presented,including S-wave velocity Vs and the physical parameter of medium-Poisson’s ratio a.Taking other geological and geophysical information into account,and with reference to the results from petrophysical experiments at home and abroad,we carried out interpretation and inference with respect to deep crustal structure,tectonics,and lithologic characters.It has been concluded that in the upper and middle crust,a values are mostly not greater than 0.25,and rocks,which generally assume brittle,are mainly composed of granite; the rocks in the lower layer of the upper crust between Yangyuan-Huai’an containing inorganic CO2 itself releases carbon; for the rocks in the lower crust and crust-mantle transitional zone,which are comparatively
基金Joint project by National Natural Science Foundation of China and the Ministry of Water Resources,No.59890200National Natural Science Foundation of China, No.48870008
文摘The man-induced sediment disaster includes material erosion, transportation and accumulation by human activities. It possesses special attribute in sociology and disaster science. In accordance with human activities, geomorphologic location, behavior and particular, the man-induced sediment disaster can be divided into 4 types: the drainage network, slope and gully, channel and plain-estuary-coastline. Each type includes erosion, transportation, accumulation, complexity and cascading. Based on human activity, geomorphology, sediment mechanics and catastrophology, the man-induced sediment disaster is characterized as follows: (1) accelerating tendency with geographical zoning back-ground; (2) non-order characters by blind action without special technical training; (3) gradually and sharply changing with human environment vibration; and (4) complexity and non-linear figure, etc. One of the reasons leading to man-induced sediment disaster is human environment vibration.
基金Supported by the National Natural Science Foundation of China(10171076)Supported by the Scientific and Technical Committee Foundation of Shanghai(03JC14027)
文摘To obtain a better Vinogradov's bound, assistant function with two or three zeros and all Dirichlet's characters has been evaluated. Assistant function g(X1,X2,X3,X4)with four zeros and all nonprincipal characters but X1X2X3X4 is constructed and evaluated in the paper. And the constant obtained is 8.395 511 841 994.
基金Yingtan City Science and Technology Project(No.YKz20180033)
文摘Objective:To investigate the effects of sevoflurane inhalation general anesthesia on serum IL-6,brain injury protein S100βand coagulation function in elderly patients undergoing total hip arthroplasty.Method:From May 2017 to May 2019,84 patients,age 60-75 underwent total hip arthroplasty in our hospital.were randomly divided into two groups:group A(n=42)and group B(n=42).Group A was maintained with sevoflurane inhalation by general anesthesia and group B with propofol by intravenous anesthesia.The surgical related indexes and postoperative complications in the two groups were compared.The level of serum IL-6,S100β,Coagulation function index[platelet count(PLT),Fibrinogen(FIB),plasma D-dimer(D-D),activated partial enzyme activity time(APTT),prothrombin time(PT)],MMSE score and MoCA score were compared between two groups before and after operation.Results:There was no significant difference in anesthesia time,operation time,intraoperative bleeding and postoperative drainage(P>0.05).1h,1d and 7d after operation,the level of PLT,D-D and FIB in group A were significantly lower than that in group B(P<0.05),PT and APTT were significantly higher than that in group B(P<0.05).1h,1d and 7d after operation,the level of IL-6,S100βin group A were significantly lower than that in group B(P<0.05).1d after operation,the MMSE and MoCA scores in group B were significantly lower than those in group A(P<0.05).The incidence of lower extremity deep venous thrombosis(2.38%)and cognitive impairment(2.38%)in group A was lower than that in group B(14.29%,16.67%)(t1=3.896,P1=0.048;t2=4.974,P2=0.026).Conclusion:sevoflurane anesthesia can reduce the incidence of deep venous thrombosis and cognitive impairment of the lower extremity after operation in elderly patients with thr,stabilize the coagulation index of patients,and downregulate the expression of il-6 and S100β.
文摘OBJECTIVE To compare the outcomes of transapical transcatheter aortic valve replacement(TA-TAVR)and surgical aortic valve replacement(SAVR)using a large US population sample.METHODS The U.S.National Inpatient Sample was queried for all patients who underwent TA-TAVR or SAVR during the years2016-2017.The primary outcome was all-cause in-hospital mortality.Secondary outcomes were in-hospital stroke,pericardiocentesis,pacemaker insertion,mechanical ventilation,vascular complications,major bleeding,acute kidney injury,length of stay,and cost of hospitalization.Outcomes were modeled using multi-variable logistic regression for binary outcomes and generalized linear models for continuous outcomes.RESULTS A total of 1560 TA-TAVR and 44,280 SAVR patients were included.Patients who underwent TA-TAVR were older and frailer.Compared to SAVR,TA-TAVR correlated with a higher mortality(4.5%vs.2.7%,effect size(SMD)=0.1)and higher periprocedural complications.Following multivariable analysis,both TA-TAVR and SAVR had a similar adjusted risk for in-hospital mortality.TA-TAVR correlated with lower odds of bleeding with(adjusted OR(aOR)=0.26;95%CI:0.18-0.38;P<0.001),and a shorter length of stay(adjusted mean ratio(aMR)=0.77;95%CI:0.69-0.84;P<0.001),but higher cost(aMR=1.18;95%CI:1.10-1.28;P<0.001).No significant differences in other study outcomes.In subgroup analysis,TA-TAVR in patients with chronic lung disease had higher odds for mortality(aOR=3.11;95%CI:1.37-7.08;P=0.007).CONCLUSION The risk-adjusted analysis showed that TA-TAVR has no advantage over SAVR except for patients with chronic lung disease where TA-TAVR has higher mortality.
文摘To reduce the pressure on aquatic resources due to the use of fishmeal in fish feed, the mastery and use of alternative sources of fishmeal in all stages of fish development are essential. Five diets including 4 experimental and one control diet were considered. Experimental diets of post-larvae were developed from unconventional ingredients in which fishmeal was completely replaced by a mixture of brewer’s yeast, chicken viscera and maggots. These foods were tested on Clarias gariepinus post-larvae with an initial average weight of 80 ± 1 mg. 1500 fish individuals were equally distributed in 15 concrete basins with a volume of 500 L forming five treatments in triplicate. Fish individuals were fed, manually at a ration rate of 20%, four times per day. The specific growth rates were 8.38%/day in imported food and 6.35%/day in the experimental food receiving 45.5% of protein from unconventional meal. Similar results were obtained with the feed consumption index. These encouraging results show that it is possible to partially or completely replace fishmeal in catfish feed and obtain an economically profitable production. The recovery of waste such as chicken viscera, brewer’s yeast and soybean meal in fish food formulation as tested in this study is a good contribution to environmental sanitation.
文摘After trace Sm^3+ ions and Gd^3+ ions doping, the emission intensity of red phosphors Y2O2S: Eu^3 + was enhanced and the voltage character (relation between emission intensity and excitation voltage) was improved while the other properties of physics and chemistry were not changed. The origins of enhancement and improvement are discussed. Probably the distortion and the defect of crystals are decreased by the substitution of Gd^3+ for Y^3+ instead of Eu^3+ for Y^3+ , and thus the Eu^3+ crystal field is improved, and radiationless process and energy loss resulted from crystal defect are weakened, which leads to increased luminescence intensity and voltage character improvement. The overlapping fluorescent spectra of Y2O2S: Sm^3+ emission and Y2O2S:Eu^3+ excitation as well as Eu^3 + excitation spectra transitions spectra lead to energy transfer from Sm^3 + sensitization of Sm^3+ ions fectively. containing Sm^3+ excitation the possibility of resonance ions to Eu^3+ ions, and the to Eu^3+ ions is achieved effectively.
文摘To the editor:Liver transplantation is the only cure for patients with endstage liver disease.It is however an ultra-major surgery which is physiologically challenging to the cardiopulmonary function of the patients.Hence,in patients who also have valvular heart disease or coronary artery disease,liver transplantation would be con-
文摘This article deals with the biochemical characteristics of varieties of Saint Mary’s Thistle such as Panacea, Debut and Samaryanka. Based on the studies, it was found that the highest oil content was found in the species Debut (26%). <span style="font-family:Verdana;">The lowest oil content was observed in the variety </span><span style="font-family:Verdana;">Samaryanka</span><span style="font-family:Verdana;"> (19%). The highest protein content and the sum of total amino acids in the seeds of St. Mary’s Thistle varieties were found in the variety Debut (131.1), and the lowest indication was observed in the species Samaryanka (79.2). By the number of replaceable amino acids existing in the seeds of the species of St. Mary’s Thistle, it was found in the Varieties Debut (126.3), and the lowest indication was observed in the variety Samaryanka (112). Based on the results of studies and the noted biochemical characteristics and varietal differences of the St. Mary’s Thistle, the possibility and expediency of expanding the crops of this species in the soil and climatic conditions of the Khorezm region are suggested. The research was conducted 2017-2019 y.</span>
文摘Most of the Domestic and foreign studies of Gulliver's Travels focus on the irony of the novel, there are few studies on the character of Gulliver. This paper will study the changes of Gulliver's character through the analysis of his travels in the four different countries, in order to contribute to a better understanding of Gulliver.
文摘A Portrait of the Artist as a Young Man is the first novel of stream of consciousness in western literature history, it mainly shows the protagonist, Stephen Dedalus' s journeys from childhood to adulthood. This paper aims at a better understanding of Stephen Dedalus, and it analyzes his character traits in literature analysis method, textual analysis method and Freud's theory of personality structure and is useful for further study.
文摘This article is devoted to the thermophysical and mechanical study of an eco-material, poto-poto. The objective is to study the influence of the addition of bamboo fibers on the thermophysical properties of the material, while verifying that it complies with the mechanical standards in Cameroon. A double study is therefore carried out: a mechanical characterization whose objective is to determine the mechanical properties (compressive strength, flexural strength and Young’s modulus) and a thermophysical characterization whose objective is to determine the thermal conductivity. For the thermophysical characterization, the asymmetric hot plane experimental setup based on 1D quadrupole modelling was developed and simulated for the estimation of thermal effusivity E and volume heat capacity ρCp. The obtained experimental results show that the apparent thermal conductivity of the developed materials decreases with increasing fibers. Although the reference material (0% fibers) has a much higher conductivity than the ordinary sand block (1.15 Wm<sup>-1</sup> K<sup>-1</sup>), the addition of fibers, already at 2%, contributes to decrease this conductivity (0.95 Wm<sup>-1</sup> K<sup>-1</sup>). From the point of view of thermal insulation and energy savings, the thermal conductivity results obtained show that the use of these materials with a maximum fibercontent of 6% would be a better thermal insulator than sand block or compressed earth brick. The compressive strength obtained is such that Rc > 0.6 MPa. All the materials developed meet the design standards when used as infill.