A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption

With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthesized from waste amidoxime resin for adsorbing Cr(Ⅵ). The waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow thermal decomposition. The static adsorption of PPR-Z conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-Z is mostly chemical adsorption and exhibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the concept of “treating waste with waste”.

Solvent extraction and separation of cobalt from leachate of spent lithium-ion battery cathodes with N263 in nitrite media

To effectively separate and recover Co(Ⅱ) from the leachate of spent lithium-ion battery cathodes,we investigated solvent extraction with quaternary ammonium salt N263 in the sodium nitrite system.NO_(2)^(-)combines with Co(Ⅱ) to form an anion [Co(NO_(2))_(3)]^(-),and it is then extracted by N263.The extraction of Co(Ⅱ) is related to the concentration of NO_(2)^(-).The extraction efficiency of Co(Ⅱ) reaches the maximum of99.16%,while the extraction efficiencies of Ni(Ⅱ),Mn(Ⅱ),and Li(Ⅰ) are 9.27%-9.80% under the following conditions:30vol% of N263 and15vol% of iso-propyl alcohol in sulfonated kerosene,the volume ratio of the aqueous-to-organic phase is 2:1,the extraction time is 30 min,and1 M sodium nitrite in 0.1 MHNO_(3).The theoretical stages require for the Co(Ⅱ) extraction are performed in the McCabe–Thiele diagram,and the extraction efficiency of Co(Ⅱ) reaches more than 99.00% after three-stage counter-current extraction with Co(Ⅱ) concentration of 2544mg/L.When the HCl concentration is 1.5 M,the volume ratio of the aqueous-to-organic phase is 1:1,the back-extraction efficiency of Co(Ⅱ)achieves 91.41%.After five extraction and back-extraction cycles,the Co(Ⅱ) extraction efficiency can still reach 93.89%.The Co(Ⅱ) extraction efficiency in the actual leaching solution reaches 100%.

Tunica albuginea allograft： a new model of LaPeyronie＇s disease with penile curvature and subtunical ossification

LaPeyronie 的疾病(PD ) 的 pathophysiology 被认为是 multifactorial，包含愈合的基因倾向，损伤，发炎和改变的创伤。然而，这些因素还没用动物模型被验证了。在这研究，我们介绍了 tunica albuginea allograft 获得的一个新模型。40 的一个总数， 16-week-old 男性老鼠被使用。这些， 8 只老鼠用作控制并且经历了 10 &#x000d7；有随后的 autografting 的 2-mm-wide tunical 切除，而留下 32 与另一只老鼠的 tunica 与缺点的 grafting 经历了一样的切除。词法、功能测试在 grafting 以后在 1， 3， 7 和 12 个星期被执行。Intracavernous 压力，阴茎弯曲的度和有弹性的纤维长度为在 allograft 和控制组之间的比较被评估。纸巾为组织学的检查被获得。阴茎弯曲作为与控制老鼠相比在 allografted 老鼠是显著地更大的。可勃起的功能在所有老鼠被维持，除了在在 12 个星期估计的那些。弹力素纤维长度作为与控制相比在 allografted tunica 被减少。SMAD2 表示在 allograft 的内部部分被检测，并且 collagen-II- 和 osteocalcin 积极的房间也被注意。在老鼠的 Tunica albuginea (TA ) allograft 是 PD 的一个优秀模型。在 12 个星期和在 TA 的内部层的骨化的存在以后的弯曲的坚持类似于与 PD 在人观察的那些。用这个动物模型的确认研究将为有效治疗学的干预帮助 PD pathophysiology 的理解。

Formative Assessment System of WeChat-aided Business English Class

The emergence of micro-social platform provides the necessary environment and technical support for individualized mobile learning.Individualized mobile learning based on WeChat improves the efficiency of Business English teaching and learning.Formative assessment applies to tracking,monitoring,and assessing students’web-based self-learning process in Business English study in Zhejiang Yuexiu University of Foreign Languages.The assessment results are used to guide students’learning effort,so as to promote their autonomous learning ability,and thus make the assessment process and the teaching process an integrated whole.A formative assessment system for business English study is then established based on the research results.

Application of Blended Learning in Business English Class

With the development of Educational informatization,the teaching of higher education is extended from the traditional classroom to the external world of the modern network classroom.This study focuses on the application of blended learning in the Business English class and selects college business English majors as subjects to conduct teaching experiments,questionnaires and student interviews.Through the analysis of the experimental results,we try to find an effective teaching method in classroom situations,which can contribute to the improvement of business English teaching and improve the quality of teaching.Blended learning model can not only meet the needs of learners,but also play a leading role with teaching effect.In this learning model,teachers can complete the functions of preparing lessons,assigning tasks,checking on-line jobs and sharing online information.

Research of Utopia in Chinese New Generation Science Fiction Literature

Chinese new generation science fiction refers to the science fiction after the 1990s because of their diverse creative concepts,aesthetic values and new narrative modes.This paper summarizes the development of Chinese science fiction literature,and analyzes the utopias in Chinese new generation science fiction.The types of utopias in new generation science fiction can be divided into two aspects:temporal and spatial utopias and technological utopias.The characteristics of Chinese new generation's utopia include extraordinary Imagination,new and different ways of thinking.The functions of Chinese utopia are mainly reflected in the affirmation of ultimate values and the criticism of reality.The creation of new generations has brought new hope to Chinese science fiction literature,but in general,Chinese science fiction literature has a long way to go.

Genre-Based Approach in Business Translation Teaching

Genre-based teaching approach is a pedagogy based on genre and genre analysis theory.Based on this teaching approach,the paper puts forward a three-stage model appropriate for the teaching of business English reading.It develops teaching activities focusing on the schematic structure of a discourse.Its purpose is to make students know that the discourses with different genres have different communicative purposes and discourse structures.Through a theoretical analysis and empirical study of the model,it is concluded that genre-based teaching approach can effectively help students improve their ability of business English reading comprehension.

Functions and Translation of Nominalization in Business Contracts

Nominalization refers to the process of producing a noun from another part of speech or the derivation of a noun phrase from an underlying clause.In order to fulfill the specific analysis of nominalization in business English contract,a corpus has been created with typical contracts.Based on a self-built business contract corpus,aspects of English nominalization,including its frequency of use,meaning selection and discourse position and function,have been examined.This study has found that nominalization is one of the most important characteristics of business contracts,and English nominalization can function mainly to improve the conciseness,formality,objectivity,and cohesiveness of the discourse.Meanwhile,the different characteristics of nominalization require different translation strategies and methods.The findings of this study may have implications for the business English teaching and translation.

Application of Lexical Chunk Approach in Translation Teaching

Lexical chunk approach refers to using chunk theory to guide students to establish chunk awareness,and with the help of various teaching methods,to create various opportunities to help students properly use fixed or semi-fixed expressions in communication.Through empirical investigation,it is found that there are problems in College English translation teaching,such as single teaching mode,concepts to be updated,cultural differences and obstacles,etc.This paper conducts in-depth discussion of its impact on college students'ability to translate from Chinese to English.Chunk teaching is helpful in fluency,accuracy and decency of language output.Finally,the author puts forward suggestions such as enhancing the awareness of language blocks,strengthening the accumulation of language blocks,optimizing the design of language block exercises,and attaching importance to the cultivation of learning strategies,so as to effectively improve the translation level of college students.

Blended Teaching of Translation Courses Based on Outcome Orientation

The blended teaching reform based on the outcome orientation is in line with the reform trend of"Internet+Education".This paper takes undergraduate translation courses as the main research object and conducts a study on the blended teaching reform of translation courses.Under the guidance of the concept of outcome orientation,the reform is carried out in the aspects of teaching design,teaching implementation and teaching evaluation,which has achieved certain results and played a positive role in cultivating translation professionals who meet the needs of society.

Neighboring Atom Collisions in Solid-State High Harmonic Generation

High harmonic generation(HHG)from solids shows great application prospects in compact short-wavelength light sources and as a tool for imaging the dynamics in crystals with subnanometer spatial and attosecond temporal resolution.However,the underlying collision dynamics behind solid HHG is still intensively debated and no direct mapping relationship between the collision dynamics with band structure has been built.Here,we show that the electron and its associated hole can be elastically scattered by neighboring atoms when their wavelength approaches the atomic size.We reveal that the elastic scattering of electron/hole from neighboring atoms can dramatically influence the electron recombination with its left-behind hole,which turns out to be the fundamental reason for the anisotropic interband HHG observed recently in bulk crystals.Our findings link the electron/hole backward scattering with Van Hove singularities and forward scattering with critical lines in the band structure and thus build a clear mapping between the band structure and the harmonic spectrum.Our work provides a unifying picture for several seemingly unrelated experimental observations and theoretical predictions,including the anisotropic harmonic emission in MgO,the atomic-like recollision mechanism of solid HHG,and the delocalization of HHG in ZnO.This strongly improved understanding will pave the way for controlling the solid-state HHG and visualizing the structure-dependent electron dynamics in solids.