Exploration and Practice of Nitrogen Addition Process for LF Refining Ladle Bottom Blowing Nitrogen Steel Liquid

This article discusses and analyzes the law of nitrogen increase in liquid steel and the main factors affect-ing the nitrogen increasing of molten steel,through the way of adding nitrogen to molten steel by bottom blowing nitrogen gas in LF refining process.It is considered that the main factors affecting the nitrogen increasing instability of molten steel are the initial temperature of LF refining,nitrogen relative element,surface active elements[O]and[S]of steel liquid,and bottom blowing rate of ladle.The large-scale production practice shows that T[O]not more than 50×10-6 and[S]is not more than 0.020 in LF refining at the initial temperature of not less than 1570.The liquid steel nitrogen enrichment test is carried out by ladle bottom blowing nitrogen gas after 20 min of refining,the flow rate is set as(6.0~7.0)NL/min per ton,and it is turned to 2 NL/min at 6 min before the end of refining,the nitrogen increasing rate of liquid steel is basically stable at(5~6)×10-6 per minute.

Research on the Application of Second Language Acquisition Theory in College English Speech Teaching

The teaching of English speeches in universities aims to enhance oral communication ability,improve English communication skills,and expand English knowledge,occupying a core position in English teaching in universities.This article takes the theory of second language acquisition as the background,analyzes the important role and value of this theory in English speech teaching in universities,and explores how to apply the theory of second language acquisition in English speech teaching in universities.It aims to strengthen the cultivation of English skilled talents and provide a brief reference for improving English speech teaching in universities.

Differences of grain-refining effect of Sc and Ti additions in aluminum by empirical electron theory analysis

The differences of grain-refining effect between Sc and Ti additions in aluminum,which cannot be substantially explained by traditional theories,were carefully studied.The empirical electron theory(EET) of solids and molecules was employed to calculate the valence electron structures(VES) of Al3Ti and Al3Sc.The conclusions can be drawn that,in the two alloys Al-Ti and Al-Sc,the different valence electron structures of Al3Ti and Al3Sc and the consequent differences of growth habit of the two particles,and the different interfacial electron density between particles and matrix fundamentally lead to the differences of grain-refining effect between Sc and Ti additions on aluminum and make Sr the better grain-refiner of aluminum.

THEORY AND PRACTICE FOR COMPILING THE ATLAS OF NATURAL DISASTERS IN CHINA

This article inquires into theoretical and practical problems on compilation of an atlas of regional natural disasters. (1) The basic theory of compiling an atlas of regional disasters has been founded on the combination of the sciences of disasters, cartography and regional geogrphy. The content structure of a regional disaster atlas should be composed of at least the following five parts:hazard-formative environments and hazard-affected bodies,hazards, disaster effects, monitoring and warning system for natural disasters, and countermeasures for natural disaster reduction. (2) Contents of cartographic design of a regional disaster atlas should be composed of at least the following five parts: base map system, cartographic representation, Symbol System, color system, map edition and map layout system. (3) Based on theory and cartographic design of compiling an atlas of regional disaster, the Atlas of Natural Disater in China, which reveals objectively the temporal and spaial pattern of regional natural disasters of China,has been compiled and published.

Conclusions in Theory and Practice for Advancing the Applications of Cable-Driven Mechanisms

The theoretical research of cable-driven mechanisms is developed with its broad applications. The first prototype of cable-driven mechanisms is RoboCrane, which was developed by the National Institute of Standards and Technology （NIST）. Then many excellent properties were developed and they have a variety of applications such as aerospace, aircraft and automobile industries [1]. Example application for RoboCrane in the field of aircraft mainte- nance is equipped with a quick-change mechanism to remove the robot arm remotely.

Theory and Practice of Water Pollution Prevention and Control for Inflowing Rivers in Taihu Valley

The pollutants from the 15 rivers inflowing into Lake Taihu accounted for about 80% of the total amount of the pollutants inflowing into Lake Taihu. Therefore, overall treatment of the inflowing rivers of Taihu Lake is of great importance to the improvement of water environment in the valley and the eutrophication status in th lake. Firstly, the basic ideas, key taches and main methods for water pollution control of inflow rivers of Taihu Lake was put forward in this article, Basic on these theories, the pollutant source status in the comprehensive treatment zone of the 15 major inflow rivers was analysized, the countermeasures of pollution control and main regulation projects were introduced, and the total abatement of pollutants was predicted. With the implement of regulation projects, the number of rivers with water quality worse than Grade V among the 15 major inflow rivers had come from 9 to 3, and the eutrophication status of Taihu Lake had changed from medium level to light level. The overall treatment of the major inflow rivers of the Taihu Lake had achieved initial success.

Theory and Practice of Major Country Diplomacy with Chinese Characteristics:Inheritance, Innovation, and Development

As economic globalization and multi-polarization continue to develop worldwide,the international order is undergoing profound and complex changes,supporting more extensive peaceful development and instances of win-win cooperation.The collective rise of the emerging major countries is prompting the construction of a fair,rational new international order in politics and economy.In this context,China is a major force for world peace and the common development of the entire world,and the central leadership of the Chinese Communist Party(CCP),with Xi Jinping at its core has proposed a series of new concepts,modes of thinking,and strategies in relation to governance and administration,taking into account both the domestic and the international situation.Xi's perspective on diplomacy emerged from the theory and practice of major country diplomacy with Chinese characteristics and is the outcome of the combination of the universal principle of Marxism with the specific practice of major country diplomacy in China,and constitutes a major component of Xi's thought on socialism with Chinese characteristics in the new era.In his report to the 19th National Congress of the CCP,General Secretary Xi proposed to develop a community with a shared concept of the future for humanity to forge a new form of international relations,featuring mutual respect,fairness,justice,and win-win cooperation.1 This shows the constructive role China is playing in the peaceful development of the world,actively participating in and leading global governance and safeguarding the stability of the international order,thus laying the basis in discourse for the theory and practice of major country diplomacy with Chinese characteristics for a new era.

Theory and Practice of Marine Regional Management in China

With the development of marine economy in coastal provinces and cities,there comes a series of environmental problems. Marine regional management,as a completely new marine management mode,transforms traditional management mode and can protect marine ecosystem. Thus,the marine regional management is feasible and applicable in China. This paper firstly discussed connotation and development of the marine regional management in China and pointed that the marine regional management is integrated management of a certain marine region. Next,it summarized characteristics of the marine regional management at current stage,for example,land-based pollution of trans-geographic system and marine management under regional government cooperative mechanism. Finally,it came up with recommendations including combining theory and practice of the marine regional management,and establishing marine regional management system as soon as possible,to realize benign interaction and sustainable development of marine economy and ecological environment.

Motivational Practices in Foreign Language Teaching:From the Perspective of Self-Determination Theory

This quantitative-oriented study investigates junior middle school EFL teachers’beliefs about motivational practices in the language teaching process.Grounded in self-determination theory,the study examined teachers’beliefs in three basic psychological needs(relatedness,competence and autonomy)and the effect of their teaching experience on these beliefs.Data were obtained from 84 Chinese junior middle school English teachers through a questionnaire.Results suggested that teachers recognized motivational practices for relatedness and competence satisfaction while showing relatively low recognition of a few motivating practices for autonomy satisfaction.Teaching experience was found to have no influence on teachers’conception of needs-related motivational practices.Findings reveal that traditional activities like collective lesson preparations may have a negative influence on teachers’beliefs about motivational practices.They also present the necessity for adjustments on educational regulations,and for modern professional training to help teachers understand students’basic psychological needs,and to encourage new ideas to bolster students’intrinsic motivation for language learning.

A Conflict of Theory and Practice： Evidence from China

This article found that Chinese international payment＇s practice conflicted with the western macroeconomic theory. Therefore, through combining the actual conditions of China, and comparing China with the United States, this article analyzed the reason causing this kind of conflict, and provided a consulting conclusion.

Rational thinking on the theory and practice of ecological civilization in the new period of China

New requirements for the ecological civilization construction were raised by the eighteenth National Congress of the CPC. A new programme was worked out to put the construction of ecological civilization in a more prominent position which will lead to achieve the new great goal "strive to build a beautiful China and realize Chinese sustainable development". How to rapidly and thoroughly promote the theory and practice research on ecological civilization, has become the focal, difficult and key point of China's economic, political, social and cultural life at present and in the future for a long period of time.

The Relation between Theory and Practice in Muslim Sages＇ Thoughts in the Third and Fourth Hijra Centuries and Its Effects on Concept of Craft （Sana＇at） and Art in Islamic Civilization

Farabi defines ＂Ilm al-Hiyal＂ （mechanic） in Ihsa al-Ulum as ＂knowing a way by which, human can adjust all of the concepts that have been proved in mathematics with verification to exotic objects, and helps their states in exotic objects to be carried＂. He believes this will be recognized and be attained by craft （sana＇at, art）. This was the common view in Islamic wisdom and philosophy in third and fourth Hijra centuries （9 ＆ 10 CE）. Researchers believe that the unique emphasis on parallelism between theoretical science and practical work is an important feature of Baghdad school and affected Islamic visual culture. Baghdad school had been affected by translation. In this way, Ikhwan-al-Safa, whom wrote the first encyclopedia of science in Islamic culture, had a very efficient role. They devised geometry into intellectual and sensual ones in the second part of their book, al-Rasa-el, and considered intellectual geometry as one of the middle philosophy and recognition and understanding factor for meaning of sensual geometry evidences. They insisted on basic situation of intellectual geometry in guidance of whom, want to learn intellectual things from sensual ones. They knew intellectual geometry as the factor for requiring skill in scientific crafts （sana＇at）, and sensual geometry as the factor of practical crafts, and made a vast relation between them. They also defined end of intellectual geometry understanding the base of all sciences and the main factor of wise, essence of self （nafs）. Important feature of Ikhwan-al-Safa＇s wisdom is omitting the gap between theory and practice, making a vast relation between them, which affected the meaning of crafts in Islamic culture, and rendered a spiritual feature to crafts and arts. It seems this relation has created the concept of traditional arts, and integrating wisdom and crafts in Iranian-Islamic culture constructed all of the Fotowat-Nam e （book of Chivalry）. This article reviews the concept, which affiliates theory and practice in third and fourth centuries and has a deep effect on recognition of art and craft in Islamic culture.

Inheritance and Innovation of Xi Jinping’s Theory and Practice of Opening Up

Adherence to China’s fundamental national policy of opening up is the only means of developing socialism that incorporates Chinese characteristics.General Secretary Xi Jinping has proposed the construction of a global community with a shared future,explaining the conceptual significance of engaging with the outside world.He has emphasized the importance of following the path of peaceful development and abiding by a mutually beneficial win-win strategy to unlock the country.He has postulated the Belt and Road Initiative and sought international cooperation,laying a robust material foundation to promote increasingly accessible relations between China and other nations worldwide.He has further illuminated the practical value of opening up.Xi Jinping’s conception of opening up represents the inheritance and innovation of a theory of world history and the conceptual and functional significance of unlocking the nation in the manner of Marx,Engels,and Deng Xiaoping.China’s strategy of opening up in the new era is marked by the idea of harmony but not uniformity.This policy was founded on innovation and development,based on China’s achievements through 40 years of reform.

Theory and Practice of Language Teaching and Learning in Vhembe District Primary Schools, Limpopo Province, South Africa

South Africa has 11 official languages enshrined in the Constitution of the country. An additional language, sign language was approved as an official language at the end of 2008. The Constitution of the Republic of South Africa and the South African Schools Act 84 of 1996 emphasise teaching and learning through any mother tongue, a learner would understand best. Section 29（1） of the Constitution of the Republic of South Africa categorically states that： ＂Everyone has the right to receive education in the official language or languages of their choice in public educational institutions where that education is reasonably practicable＂. However, most text books written in English have been prescribed at many schools. One is not certain whether the subjects are taught in English or in the indigenous language at these schools. In the end, those teachers use the mother tongue, together with English, in teaching learners. This result in code switching and code mixing takes place in classes, which are meant to facilitate communication across barriers of colour, language, and region, while creating an environment in which respect for languages other than one＇s own would be encouraged. Teaching and learning in one＇s mother tongue promotes full participation in the economy of the country. The aim of the paper is to investigate teaching and learning in Vhembe primary schools of the Limpopo Province in South Africa, within the framework of existing legislation. This will be compared with empirical evidence. The researcher seeks to establish what language（s） primary schools use for teaching and learning. Based on this, conclusions and recommendations will be made to assist stakeholders in language-in-education policy formulation.

Nursing Theory and Its Practices in Two Health Care Facilities of Bujumbura

Introduction: Nursing theory provides a systematic explanation and description of nursing phenomena. It is very important during nursing practice in healthcare facilities (HCFs) because it guides nurses on how to collect data, which data to collect, decide how to interpret the data through the perspective of the theorist, how to plan and implement care, how to make a change and how to evaluate the patient’s outcomes. This study aims to illustrate how nursing theory can be applied during the implementation of nursing care in HCFs of Burundi by orienting the nurses to understand its application during practice. Methods: A cross-sectional study design was used to assess the use of nursing theories in healthcare facilities. A purposive sampling method was used also to select 81 nurses working full and part by applying Alain Bouchard’s formula and the questionnaire was used as the data collection instrument. Results: The current study had revealed a poor knowledge among the participants on the use of nursing theory in these two HCFs as for all variables, their average scores were almost 24.1% whilst those who had no notion related to nursing theory reach a percentage of 75.9%. Conclusion: The study findings were slightly poor as for all variables, they scored less than 40%. Therefore, the use of theories to guide their practice was highly recommended to enhance the patients’ outcomes based on the use of scientific-based experts which could result from continuous education.

Insight of schema theory into interpretation practice

Schema is an important concept in cognitive psychology, referring to how different types of information are connected in our brain, and the process of activating stored information. In view of modern schema theory, this paper focuses on its application in the three stages of interpretation practice. Schema plays a role in preparation before interpretation, which includes enhancing the interpreter＇s linguistic competence, and enlarging his storage of background information; schema influences performance during interpretation in terms of comprehension and note-taking; summary after interpretation is to supplement original schema. With the guidance of schema theory, interpretation practice can be carried out in an effective way.

Practice Analysis on the Teaching Theory and Skills of English Translation

As a universal language, English makes a better communication between China and the developed countries;English language teaching has become increasingly important in more and more Chinese Schools. At the beginning, when Chinese students start to learn a second language, they need to translate the second language such as English into Chinese in the first hand, and this procedure will help them to understand and learn English better. For English language translation teachers, they need to research and create the suitable, effective method of learning English translation for most students constantly in order to improve the English translation learning efficiency of the Chinese students. The local culture of China is quite different from the culture of other English speaking countries. When our Chinese students study English language translation, at the same time, they need to learn the different culture in different countries and learn how to accept and face up the cultural background difference between our country and the other English speaking countries. In the meantime, during the time of teaching English translation, the English translation subject teachers need to guide the students to learn and understand the difference in practice, and help them to establish a comprehensive and correct idea of learning English translation through teaching correct and different translation skills.

Development and reform research of English teaching theory and practice

The course is the core of education, which is the basic way to achieve educational goals, an educational content and value orientation are mainly expressed and implemented through the curriculum. English courses are the core of English education, which is a concrete manifestation of the value of English education, and it is basic carrier to achieve the goal of English education. This paper analyzes the development of English teaching practice, development and reform of English teaching methods.

An Evaluation of the Core Controversies in Contemporary Western Human Rights Theory——A Study Based on the Examination of the Criterion of Fidelity to Practice

The development of theories on human rights with Chinese characteristics and China’s engagement in global human rights governance cannot be separated from attention to contemporary Western human rights theory.The debate between naturalistic and political conceptions of human rights has a long history,but discussions on the basic criteria for evaluating human rights theories have been insufficient.This article,focusing on the criterion of fidelity to practice,attempts to identify the development trajectory and direction of human rights theory.The universal claims of naturalistic human rights perspectives and the human rights catalog they propose have been criticized for deviating from practice.On the other hand,political conceptions of human rights,while emphasizing domestic human rights practices,have been criticized for their occasional nature and perceived loss of criticality.The broad-way practice theory seeks a third way that goes beyond the divide between these two perspectives.On the one hand,the theory itself faces limitations and the need for reshaping,while on the other hand,the traditional singular practice theory is also undergoing self-renewal.It can be said that the“internal critique”of contemporary Western human rights theory is already underway and will continue.

On Application and Practice of Theory of Constructivism in English Teaching

With the reform of college English teaching, many new teaching methods have been applied to college English teaching. This article is based on constructivist theory to explore its application in college English teaching. Constructivism emphasizes student-centered, collaborative learning, self-learning and real learning environment. It emphasizes active leamers meaning construction.