The simulation calculation of adiabatic methanation reaction is studied using the Aspen Plus simulation software,through theoretical hypothesis and simplified model.The effect of gas content about the temperature and the total carbon conversion rate are discussed.The results show the adiabatic methanation reactor temperature is improved by H_2,CO concentration increasing,and reduced by the CH_4、CO_2、N_2 and H_2O concentration increasing.The total carbon conversionswould is reduced by the increasing of the concentration of CO and CO_2,and is improved by the concentration of H_2.
Soft computing is closely connected with the holistic development of human thoughts,in which relativity thought has become an important foundation of the methodological construction for soft computing. The Method of fuzzy sets breaks down the absolutistic tendency required by the precision of classical logic and absorbs subjectivity and fuzziness into the process of computing analysis by relativity thought. Rough sets method keeps a relative balance between the determinism and non- determinism on the mathematical computing level by means of knowledge reduction and discourse domain division. Artificial neural network algorithm provides an important basis for the technological practice of artificial intelligence by grasping the complex relativity characteristics of the relation between the whole and the part in the structural function of human brain. Evolutionary and hereditary algorithm provide a relative optimized computing analysis path for the system design of artificial intelligence through reference to such relativity characteristics such as stability and variability during the process of biological evolution and inheritance.
With the ascendant development of regional economic integration,the multilateral negotiations led by WTO have a trend to turn back on track,which is a good opportunity to propell the cooperation of regional economic groups to multilateral integration. This paper summarizes the positive factors and negative difficulties of regional economic groups in achieving multilateral integration,and puts forward the corresponding integration method and path. In order to promote the multilateral negotiations,China should follow the trend of the world economic development,vigorously develop regional trade cooperation,accelerate the design of free trade agreement model,exert China's influence in the making of international trade regulation,and improve their position in the global economy.
Fuzzy sets,rough sets,evolutionary genetic algorithm,and neural network are all important soft computing methods. There are several similarities between the central thought of soft computing and contextual thought.Also,the remarkable trend of continuous expansion,mutual fusion,and development of soft computing methods has more strongly reflected and verified the validity and necessity of contextual thought. During this process,on the one hand,scientific contextual thought will play a leading and fundamental role for the path breakthrough of soft computing methods; On the other hand,the gradual innovation of soft computing methods will also enrich and replenish the scientific connotation of contextual thought.
The fluorescence carbon dots(CDs)were prepared by using sucrose as the carbon sources,and were characterized by transmission electron microscopy,Fourier transform infrared spectroscopy,UV-Vis absorption,fluorescent spectroscopy.These spherical CDs with a particle size about 2nm were observed.The maximum absorbance and emission maxima of CDs solution were recorded at 286 nm and 526 nm,respectively.Furthermore,the acidity of solution was also a key factor influencing the emission peak and the fluorescence intensity.Photocurrent and photovoltage response were also performed in the paper,compared with black group,the photocurrent and phtovoltage of modified electrode have increased 3.3times and 5.3times,respectively.
2015年8月20日在垣曲县解峪乡原中村发现了卫矛科(Celastraceae)卫矛属(Euonymus)小果卫矛(Euonvmus microcarpus (Oliv.)Sprague)的山西省野生分布.小果卫矛为至今发现的山西天然分布卫矛属植物中的唯一常绿植物.小果卫矛在我国分布于湖北、陕西、河南、四川和云南等省,此前在山西并未见报道.至此,小果卫矛的发现使山西卫矛属的记录变为10种1变种.
Yuan Zhengwas a new poetics proposition presented by KONG Yin Da in his Mao Shi Zheng Yi on the basis of traditional Yan Zhi. It aimed to challenge the proposition of Yuan Qing,which had held dominant position in poetics since the Wei and Jin Dynasty. Yuan Zhengemphasized the social responsibility of the poet and the social function of the poetry. This new poetic proposition arose from the classic interpretation,and influenced the poetic theory and the poetic creation. The theoretical spirit of Yuan Zhengpermeated not only through the changes of the poetry in Tang Dynasty from innovating Qi Liang literary style to establishing its own style,but also through its later variation and development.
Using the active disturbance rejection control strategy,this paper studies the stability for a reaction-diffusion equation subject to Neumann actuation matched disturbance.The time varying extended state observer is designed to estimate the disturbance.And we get the explicit controller.Under this controller,it shows that the closed-loop system of reaction-diffusion equation is asymptotically stable.Simulation examples are illustrated these result.
The true has its roots in cognition,whose earliest and most significant form is that of natural environment. The ancient people's primordial cognition of phenomena,however,is delimited and assimilated by their literacy at its earliest stage-- they are at their very inception tightly integrated. Morals,also known as good,turn out dissimilar and even conflicting for tribes with different standards of human behaviors. Man's aesthetic experience and knowledge of nature,on one hand,are closely connected to his production- orientated practice. On other hand,prehistoric people's aesthetic faculties are bound to come under influence of witchcraft-mythology ideology. Such an intermixture enables beautiful to break away,partially or wholly,from true and give appearance of illusory. Notwithstanding complicated relationship between the beautifuland the goodin literary works,the beautifulis essentially inseparable from the good; only with a particular emphasis on the truewill there be a harmonious relation among three. Aesthetic tastes are dynamic,which will be theoretically sublimated into aesthetic ideals. In each important era,the aesthetic feature and taste have their own values,and development of aesthetic perceptions( aesthetic tastes,rules and ideals) should be examined in context of nation's transforming psychological make- up,including aesthetic psychology.
The form of ZHAO Shuliu0027s fictions is a result of authoru0027s understanding of the political pulse,and it implicates some form symptoms of happy ending and anti- narration. Especially,anti- narration,as a form against the authoru0027s will,has formed the most profound contents of the literary politics of ZHAO Shuliu0027s fictions and represented authoru0027s subject crisis of creation.
By means of the quasi-Wilson element,a fully-discrete nonconforming mixed element scheme is established for a kind of fourth-order parabolic equations in back ward Euler fully-discrete case.By using the special character of the element,that is,the consistency error can be estimated with O(h~2)/O(h~3)in broken energy norm when ubelongs to H~3(Ω)/H~4(Ω),the splitting technology and the high accuracy analysis of bilinear finite element,the superclose results with order O(h~2+τ)of original variable uand intermediate variable q=Δuin H~1-norm are obtained.Here,handτare parameters of subdivision in space and time step.
Since the establishment of modern pedagogy,educational phenomenon has always been regarded as the researching object of pedagogy. Observing the pedagogical history,being influnced by different philosophical ontology,pedagogy has different understandings of its own researching object,educational phenomenon . In modern times,pedagogical researchers stood from different positions,such as nature science,linguistic philosophy,social science and human science,thereby generating experimental pedagogy,cultural pedagogy,critical pedagogy,speculative pedagogy and other theoretical schools of different orientation. The contemporary researchers challenge takingeducational phenomenonfor pedagogical researching object and advocate taking educational problemfor their own researching This argument confuses the essential differentiation between problemand problem's object. Pedagogy is a science of studying phenomenon,which in this context means that the essence of phenomenon should be understood from humanities standpoint on the basis of the reflection of foregoing position,there by having its methodology established accordingly so that pedagogical theories are not only of sufficient explanatory power,but also of some capability of providing normative guidance for practice.
The journalist morality and the medium group morality should be separated. Despite the relation between these two moralities,the difference between them should be recognized. To regulate the group behaviors with individual morality or conversely to regulate the individual behaviors only with group morality,either is likely to result in moral decay. Professional ethics of press should be fully discussed and accepted by practitioners,and it should be also structuralized in the journalist values. The supervision role of press morality should be played through personal conscience and public opinion of society,and the civilized and sound media system should be constructed on the premise of an organic unity of social morality of society and the personal virtue of journalist behaviors. Only such kind of journalistic ethic system can coordinate well with the idea of freedom,democracy and legal institution in modern contract society.
A novel fluorescein derivative 5-chlorosalicylicaldehyde fluorescein hydrazone(CSFH)is synthesized by two-step reaction and characterized by IR,NMR,MS,elemental analysis.The interactions between CSFH and common metal ions were studied via absorption spectra.The results showed CSFH could recognize Cu2+selectively.
The soliton scattering in PT-symmetry Scarf-Ⅱpotential is discussed by numerical stimulation,including the evolution dynamics and the influence of PT-symmetry potential to soliton unidirectional scattering properties.Based on these results,we present the incident velocity window,the width and depth window of the imaginary part of the potential.The results show that the soliton scattering can exhibit the properties of the unidirectional flow and manipulate the scattering direction of the soliton by choosing some proper the potential parameters.
This paper established a headspace capillary gas chromatography method for the tetrachloride carbon determination in drinking water in Datong district.This method was based on the national standards《National Hygiene Standard for Drinking Water》GB(5749-2006).For all of the 160 samples,the passing rate was 100%.A liner response was obtained within the concentration range of 0.001~3.00μg/L with a correlation coefficient greater than 0.999.The limit of detection of this method was 0.015μg/L.The recoveries of tetrachloride carbon were90.7%-108.1%,and the precision was 1.80%-9.07%.This article also aimed at reducing the tetrachloride carbon content in drinking water,and proposed several reducing methods for healthy,such as boiling for 5minutes method,active carbon filtration and processed by direct drinking machine.All of these methods could significantly reduce the tetrachloride carbon in the water samples(P0.05).
The initial nanocrystalline aluminum samples were assembled by Voronoi geometrical method,then these samples were relaxed to reduce the high energy and stress,which was caused by the unphysical grain boundaries.The structures,the average internal stresses,as well as energies were observed during the relaxtion processes.The influence of grain size on the elastic constants and thermodynamic properties of the computer generated samples were analyzed.With the increase of grain size,the vaule of C11 and C44get bigger,while C12 get more smaller.The results shows that the bulk modulus,shear modulus,young's modulus at final state are close to the experimental datas.
The four- line verse of Zhong Yang Gong Muin Tianwen begins with the narration of a war between Yandi and Chiyouin in ancient China. Fenge,which is metioned in the verse,refers to the solid and sharp metal weapon. The story that a woman osmund picker is saved by a deer has nothing to do with the tale of Boyi and Shuqi.And there are some hints in Tianwen which can prove the plot that the woman fled to the north on a deer. The place where Yandi engaged Chiyou is called Zhuolu or Dulu,which suggests that the Chinese legend about deer has close connection with place names. Another four- line verse Xiong You Shi Quanin Tianwen reflects the court rebellion in the Jin state,in which elder brother is known as ZHAO Dun and younger one as ZHAO Chuan,through the narration about the escape of ZHAO Dun and the process that he gained the regicide notoriety. These four lines have no relevance to both Qin people and the historical stories of Zhao state. Changmaijie in Yizhoushu and Gongyangzhuan are important backing for the interpretation of the verses above,and the publication and promulgation of them suggest that QU Yuan might have gained access to and made use of them.
Soft computing breaks through the thinking limitation of traditional hard computing by intaking the uncertainty,irrationality,etc.,which happens to coincide with the thinking that scientific realism breaks through the absolute ‘formal reason'of the traditional realism. Specifically,there are isomorphic phenomena between the thinking principles of fuzziness in the soft computing and the objective world,which endows soft computing with the reality feature from the level of ontology; other features of soft computing,like fault tolerance,conform to the epistemological expanding trend of scientific realism from clinging firmly to the normative reason of scientism to constructing the open and dynamic system; the design and application of soft computing generally accords with methodological principles of scientific realism as contextual analysis. Thus,scientific realism provides firm and reliable theoretical basis for soft computing. And the combination of the two is of great reference not only to the further development of soft computing,but also to the consolidation of the position of scientific realism.
The flexible conductive substrate based on polyester nonwoven fabric(NW)are fabricated by coating Ni layer on NW through electroless plating.The polypyrrole is deposited on the substrate of Ni/NW through chemical oxidation polymerization by using FeCl_3·6H_2O adsorbed on Ni/NW as oxidatant,and the concentration of FeCl_3·6H_2O is also optimized in order to get the optimal composites.The obtained composites are characterized by using X-Ray diffractomer,X-ray photoelectron spectroscopy and scanning electron microscope and the properties of the capacitor cells assembled by the composites are investigated by cyclic voltammetry,galvanostatic charge/discharge and electrochemical impedance spectroscopy measurements.The results show that the specific capacitance of the optimal flexible solid capacitors assembled by optimal composites can reach to 150 mF/cm~2 at scan rate of 2 mV/s and that the capacitive properties of the capacitor in bent state can almost remain unchanged compared with its normal state.
