Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the mold.In which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid slag.In contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive information.Therefore,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding times.The results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles increases.In addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually decreases.In one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the large.These findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

Activation of adult endogenous neurogenesis by a hyaluronic acid collagen gel containing basic fibroblast growth factor promotes remodeling and functional recovery of the injured cerebral cortex

The presence of endogenous neural stem/progenitor cells in the adult mammalian brain suggests that the central nervous system can be repaired and regenerated after injury.However,whether it is possible to stimulate neurogenesis and reconstruct cortical layers II to VI in non-neurogenic regions,such as the cortex,remains unknown.In this study,we implanted a hyaluronic acid collagen gel loaded with basic fibroblast growth factor into the motor cortex immediately following traumatic injury.Our findings reveal that this gel effectively stimulated the proliferation and migration of endogenous neural stem/progenitor cells,as well as their differentiation into mature and functionally integrated neurons.Importantly,these new neurons reconstructed the architecture of cortical layers II to VI,integrated into the existing neural circuitry,and ultimately led to improved brain function.These findings offer novel insight into potential clinical treatments for traumatic cerebral cortex injuries.

Effects of basicity and MgO content on the viscosity of the SiO_2-CaO-MgO-9wt%Al_2O_3 slag system

The effects of basicity and MgO content on the viscosity of SiO2-CaO-MgO-9wt%Al2O3 slags with basicity from 0.4 to 1.0 and MgO content from 13wt%to 19wt%were investigated using the rotating cylinder method. A correlation between the viscosity and the slag structure was determined by Fourier transform infrared （FTIR） spectroscopy. It is indicated that the complex network structure of the slag melt is depolymerized into simpler network units with increasing basicity or MgO content, resulting in a continuous decrease in viscosity of the slag. The viscosity is strongly dependent on the combined action of basic oxide components in the slag. Under the present experimental conditions, increasing the basicity is found to be more effective than increasing the MgO content in decreasing the viscosity of the slag. At higher temperatures, the increase of basicity or MgO content does not appreciably decrease the viscosity of the slag, as it does at lower tem-peratures. The calculated activation energy of viscous flow is between 154 and 200 kJ＆#183;mol-1, which decreases with an increase in basicity from 0.4 to 1.0 at a fixed MgO content in the range of 13wt%to 19wt%.

Research on basic characteristics of complex system brittleness

The goal of this paper is to research one new characteristic of complex system. Brittleness, which is one new characteritic of complex system, is presented in this paper. The linguistic and qualitative descriptions of complex system are also given in this paper. Otherwise, the qualitative description of complex system is presented at first. On the basis of analyzing the existing brittleness problems, linguistic description and mathematic description of brittleness are given as well. Three kinds of phenomena to judge brittleness of complex system are also given, based on catastrophe theory. Basic characteristics of brittleness are given on the basis of its mathematic description. Two critical point sets are defined by using catastrophe theory. The definition of brittleness and its related theory can serve the control of complex system, and provide theoretical basis for the design and control of complex system.

Platelet-rich plasma for muscle injuries: A systematic review of the basic science literature

BACKGROUND Platelet-rich plasma(PRP) is an increasingly used biologic adjunct for muscle injuries, as it is thought to expedite healing. Despite its widespread use, little is known regarding the mechanisms by which PRP produces its efficacious effects in some patients.AIM To clarify the effects of PRP on muscular pathologies at the cellular and tissue levels by evaluating the basic science literature.METHODS A systematic review of PubMed/MEDLINE and EMBASE databases was performed using the Preferred Reporting Items for Systematic Reviews and MetaAnalyses(PRISMA) guidelines and checklist. Level III in vivo and in vitro studies examining PRP effects on muscles, myocytes and/or myoblasts were eligible for inclusion. Extracted data included PRP preparation methods and study results.RESULTS Twenty-three studies were included(15 in vivo, 6 in vitro, 2 in vitro/in vivo). Only one reported a complete PRP cytology(platelets, and red and white blood cell counts). Five in vitro studies reported increased cellular proliferation, four reported increased gene expression, and three reported increased cellular differentiation. Five in vivo studies reported increased gene expression, three reported superior muscle regeneration, and seven reported improved histological quality of muscular tissue.CONCLUSION The basic science literature on the use of PRP in muscle pathology demonstrates that PRP treatment confers several potentially beneficial effects on healing in comparison to controls. Future research is needed to determine optimal cytology,dosing, timing, and delivery methods of PRP for muscle pathologies.

Stability for basic system of equations of atmospheric rhotion

The topological characteristics for the basic system of equations of atmospheric motion were analyzed with the help of method provided by stratification theory. It was proved that in the local rectangular coordinate system the basic system of equations of atmospheric motion is stable in infinitely differentiable function class. In the sense of local solution, the necessary and sufficient conditions by which the typical problem for determining solution is well posed were also given. Such problems as something about ＂speculating future from past＂ in atmospheric dynamics and how to amend the conditions for determining solution as well as the choice of underlying surface when involving the practical application were further discussed. It is also pointed out that under the usual conditions, three motion equations and continuity equation in the basic system of equations determine entirely the property of this system of equations.

Discussion on the Performance Evaluation Index System of Basic Course Teaching Team in Colleges and Universities

Teaching team plays an important role in integrating teaching resources,improving the quality of teachers and the quality of education and teaching.This paper studies the characteristics of the basic course teaching team,and gives the principles of building the basic course teaching team performance evaluation index system and the specific performance evaluation index system,in order to provide a direction for the high-level construction of the teaching team.

Activation of endogenous neurogenesis and angiogenesis by basic fibroblast growth factor-chitosan gel in an adult rat model of ischemic stroke

Attempts have been made to use cell transplantation and biomaterials to promote cell proliferation,differentiation,migration,and survival,as well as angiogenesis,in the context of brain injury.However,whether bioactive materials can repair the damage caused by ischemic stroke by activating endogenous neurogenesis and angiogenesis is still unknown.In this study,we applied chitosan gel loaded with basic fibroblast growth factor to the stroke cavity 7 days after ischemic stroke in rats.The gel slowly released basic fibroblast growth factor,which improved the local microenvironment,activated endogenous neural stem/progenitor cells,and recruited these cells to migrate toward the penumbra and stroke cavity and subsequently differentiate into neurons,while enhancing angiogenesis in the penumbra and stroke cavity and ultimately leading to partial functional recovery.This study revealed the mechanism by which bioactive materials repair ischemic strokes,thus providing a new strategy for the clinical application of bioactive materials in the treatment of ischemic stroke.

Highly Sensitive Spectrophotometric Determination of Trace Amounts of Uranium ( Ⅵ ) with Thiocyanate-Basic Xanthene Dye-Gum Arabic Systems

Spectrophotometric determination of molybdenum, zinc, cobalt(Ⅱ), indium, selenium (Ⅳ), iron (Ⅲ), vanadium (Ⅴ), which is based on the ion-associate complexes formed by the reaction of metal ion-thiocyanate anionic complexes with some basic dyes in aqueous solution in the presence of a surfactant has been reported.

Study on the supramolecular systems of two basic violets with cyclodextrins by MWNTs/Nafion modified glassy carbon electrode

Abstract The electrochemical properties of two basic violets （methyl violet and ethyl violet） at the MWNTs/Nafion modified glassy carbon electrode were investigated. The redox of the basic violets is two-electron and two-proton process, and methyl violet presents stronger electron transfer capacity than ethyl violet. Meanwhile, the inclusion constants of the two basic violets with five CDs were determined by differential pulse voltammetry （DPV）. The two basic violets and CDs can form 1：1 complexes, The inclusion capacities of the two basic violets follow the same order： CM-β-CD 〉 HP-β-CD 〉 TM-β-CD 〉 DM-β- CD 〉 β-CD. ？2009 Yu Jing Guo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

Philosophical Views and Basic Theories of System Dynamics

System dynamics, founded by professor Forrester at Massachusetts Institute of Technology in 1956, is a discipline which analyzes and studies the system of information feedback. Basic views of theories of system dynamics distinctively show its dialectical characteristics. More attention should be paid to the features of complicated nonlinear systems. The model simulation of system dynamics is a kind of structure-function simulation. One of the remarkable advantages of system dynamics is that it can handle problems of high order, nonlinear and multiplefeedback system.

Development of Management and Application System of Basic Meteorological Data

Based on convenience and safety of historical data application, B/S mode is used instead of database management structure of C/S mode, and it can not only combine database and network, but also realize the safe use of historical data online. High-level programming language is used to develop a online management and application system of historical meteorological data based on B/S mode. System data import function can import ground report file sequence of Xuzhou （ including five county-level stations） into the database, construct Oracle database of Xuzhou and the five stations since 1953, and establish data tables of time, day, ten-day, monthly, quarterly and annual historical data, weather information and so forth. Management software of database server is established to realize instruction-level management and scheduling of database and a balanced distribution of resources among users. At the same time, a Web-based management application interface is set up to meet users＇ needs to retrieve a variety of repositories, and it provides statistical query of time, day, ten-day, monthly, quarterly and annual historical data and climate data for each meteorological element, thereby meeting the needs of meteorological research and all sectors of society for statistical query of meteorological data.

Advances in Basic Theory Research of Mongolian Medicine and Prospects of Its Combination with Systems Biology Research

This paper sorted out the relevant literature on the basic theory of Mongolian medicine,explored the research methods and ideas of the basic theory of Mongolian medicine,and elaborated the idea of combining systems biology to study part of the basic theory of Mongolian medicine.Through searching classic works and research papers in academic journals,this paper sorted out and summarized the research progress of the basic theory of Mongolian medicine and the existing problems in the current research,analyzed its characteristics,combined with systems biology methods to systematically explain some content in the basic theory,reveal its scientific connotation,and provide a basis for further research.

The Revelation of Foreign Disabled People Basic Public Service System to China

Disability is an inevitable phenomenon in the development of human society. Creating a good environment for disabled people is not only an important condition of disabled people to fully participate in social life, but also the performance of the social civilization and progress. This article describes some oftbe specific practices of foreign disabled basic public service system including the legislative level, the level of life care and social welfare, etc. Based on the analysis of China system construction of the disabled people public service, proposing build the government＇s macroeconomic, social middle and personal microcosmic basic public service system for disabled people and advocating shared responsibility, which the government should play a leading role, society do good service, the disabled do self-help.

Basic Courses System Construction Based on Qualities Cultivation

Basic courses are responsible for the cultivation of integrative qualities, which is a guarantee of the long-term sustainable development for the students.However, they are now challenged by the specialized courses in Chinese colleges.This essay first analyzes the current situation of the provision of basic courses in higher vocational colleges of China, then expounds the requirements of qualities cultivation of enterprises, and at last centers on the basic courses system construction in higher vocational colleges on orientation of qualities cultivation.

PEAK-System发布PCAN-Basic 4

PEAK—System公司已经公布了最新的PCAN—Basic版本4，用于PCAN以及PCANFD接口的编程接口。这个API可应用于32位或者64位的编程环境，如果基于PCAN—Gateway网关系列，还可以实现IP网络远程CAN总线通信。最新PCAN—Basic的最明显的改动是添加了CANFD通信的初始化、读写操作，主要的操作函数为CAN_InitializeFD，CAN_ReadFD，CAN_WriteFD。

Analysis on Development of Basic English Extensive Reading System and the Applications on the Reading Teaching of Sports News

This paper conducts the analysis on development of the basic English extensive reading system and the applications on the reading teaching of sports news. Extensive reading of text or material is dead and cannot provide a teaching model. How to talk about what to proceed from reality, according to the principle of gradual and orderly, according to the level of the students and the ability to accept. English newspapers as fresh language, popular novel, close to the life of a corpus source that is the college English teaching has always attached importance to the reference materials. According to the rhetorical characteristics of English newspapers, we set the course, it is best to learn some rhetorical knowledge after the students to open the course, English majors can learn after the rhetoric can also be extended as the rhetoric class and homework. This paper proposes the new idea of dealing with mentioned issues that will promote the development of reading teaching of sports news.

Chinas Has Basically Established a Nationwide Unitary Certification and Accreditation System

Through three-year’s efforts, a nationwide unitary certification and accreditation system has already been established in China, which has legalized and standardized China’s certification and accreditation work. Apporved by the State Council, the Certification and Accreditation Administration of China (CNCA), which is in charge of supervising, administrating and coordinating certification and accreditation departments of the whole nation, has done a lot of work to achieve this goal.

On the System of Rights Underlying the Right to Health and Constraints on the Right to Health——Including a Commentary on the Basic Healthcare and Health promotion Law(Draft)

Conceptually,health is subjective,procedural and socially reliant.This three-fold nature determines the connotations of the right to health as well as the constraints thereof.The right to health encompasses both the right to freedom and social rights.The right to freedom in the context of health means that the state should respect the health status and choices of its citizens and trust that the people are able to optimize their health through their own efforts,whereas the right to basic healthcare services is an important component of the right to health from the perspective of social rights.The review system stipulated in administrative normative documents increases,to a certain degree,the possibility that citizens can realize their right to health.The right to health is constrained in three aspects:"precondition of the possible",concurrent requirements imposed by society and conflicts among basic rights.When there is financial restraint on what the state can afford,the right to health is constrained by limits to healthcare institutions and the provision of healthcare services.over-emphasis of individual responsibility on the part of the insured can possibly transform the right to health into an obligation to be healthy.