bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preservation of DNA for data storage
Authors: Tan Xin , Ge Liqin , Zhang Tianzhu , Lu Zuhong 
Published: November 2020

The preservation of DNA has attracted significant interest of scientists in diverse research fields from ancient biological remains to the information field. In light of the different DNA safekeeping requirements (e.g., storage time, storage conditions) in these disparate fields, scientists have proposed distinct methods to maintain the DNA integrity. Specifically, DNA data storage is an emerging research, which means that the binary digital information is converted to the sequences of nucleotides leading to dense and durable data storage in the form of synthesized DNA. The intact preservation of DNA plays a significant role because it is closely related to data integrity. This review discusses DNA preservation methods, aiming to confirm an appropriate one for synthetic oligonucleotides in DNA data storage. First, we analyze the impact factors of the DNA long-term storage, including the intrinsic stability of DNA, environmental factors, and storage methods. Then, the benefits and disadvantages of diverse conservation approaches (e.g., encapsulation-free, chemical encapsulation) are discussed. Finally, we provide advice for storing non-genetic information in DNA in vitro. We expect these preservation suggestions to promote further research that may extend the DNA storage time.
The bibliography includes 99 references.
Pseudonyms as carriers of contextualised threat in 19th-century Irish English threatening notices
Authors: Peters Arne , van Hattum Marije 
Published: November 2020

AbstractThis paper explores functions of pseudonyms in written threatening communication from a cognitive sociolinguistic perspective. It addresses the semantic domains present in pseudonyms in a corpus of 19th-century Irish English threatening notices and their cognitive functions in the construction of both cultural-contextualised threat and the threatener’s identity. We identify eight semantic domains that are accessed recurrently in order to create threat. Contributing to the notion of threat involves menacing war, violence, darkness and perdition directly, while also constructing a certain persona for the threatener that highlights their motivation, moral superiority, historical, local and circumstantial expertise, and their physical and mental aptitude. We argue that pseudonyms contribute to the deontic force of the threat by accessing cultural categories and schemas as well as conceptual metaphors and metonymies. Finally, we suggest that pseudonyms function as post-positioned semantic frame setters, providing a cognitive lens through which the entire threatening notice must be interpreted.
Conflicts between World Englishes
Authors: Wan Tsung-Lun Alan , Cowie Claire 
Published: November 2020

Abstract
Negative attitudes of non-Singaporeans towards Singapore Colloquial English (SCE) are often used to support the “Speak Good
English Movement” in Singapore. This article examines spontaneous metalinguistic discourse about SCE in an online Facebook group where
Taiwanese migrants in Singapore gather for mutual support. Based on the idea that metalinguistic discourse is mediated through the social
relation between interlocutors, this study reveals how the language ideologies surfacing in the investigated online space are formed through
stance-taking processes between people sharing a nationality. We argue that this spatial context elicits and escalates negative ideologies
of SCE, which are situated in popular hierarchies of varieties of English, and also hierarchies of Mandarin.
Cultural conceptualizations ofhaghighat/vagheyat(‘truth’/‘reality’) in Persian
Authors: Nosrati Vahede 
Published: November 2020

AbstractThis article examines the cultural conceptualizations ofhaghighat/vagheyat(‘truth’/‘reality’) expressions in Persian as these are fundamental concepts in life, religion, as well as culture and are used in many commonly used everyday expressions. Therefore, it is important to understand what these expressions really mean and how they compare with equivalent concepts in other languages. To that end, this study investigateshaghighat/vagheyatexpressions that instantiate cultural conceptualizations in Persian. This is the first attempt at employing the analytical tools of Cultural Linguistics (Sharifian 2011,2017b) to exclusively focus on exploring such cultural conceptualizations. In order to study naturally instigated expressions, the researcher makes use of multiple sources including an open-ended questionnaire, dictionaries, online sources, and focus group interviews. The study further draws on the author’s intuition as a native speaker and analyzes have been cross-checked by a number of Persian native speakers and experts. Analysis of the data concerns the significant conceptualizations ofhaghighat/vagheyatexpressions, indicating thathaghighat/vagheyatfunctions as the main conceptual basis for many manifestations of truth/reality in Persian. Furthermore, the findings demonstrate that a number of sociocultural factors such as religion, history, and literature have a role in shaping the cultural conceptualizations ofhaghighat/vagheyatexpressions in Persian.
On the binding energies of antihydrogen formed by the interactions of antiprotons in cold positron plasmas
Authors: Jonsell S , Charlton M 
Published: November 2020

Abstract
The binding energies of antihydrogen atoms formed when antiprotons are mixed with positron plasmas having densities ranging from 1013–1015 m−3, and at temperatures of 5–30 K, have been investigated using simulations. Major changes in the distribution of binding energies are observed, with more strongly bound states evident at the higher densities, and at lower temperatures. For deeper binding, the distribution of binding energies follows a power-law which is found to be strongly dependent upon plasma properties and the strength of the applied magnetic field. The underpinning role of collisions in determining the binding energies is explored.
High-efficiency ultrathin terahertz geometric metasurface for full-space wavefront manipulation at two frequencies
Authors: Fan Junpeng , Cheng Yongzhi , He Bin 
Published: November 2020

Abstract
It has been demonstrated that metasurfaces have the ability to manipulate the wavefront. However, most multifunctional metasurfaces reported to date only operate in either reflection or transmission mode. In this paper, a bilayer metasurface based on geometric phase is proposed to independently tailor the wavefronts of transmitted and reflected circularly polarized (CP) waves at two different terahertz frequencies. More specifically, the metasurface can transform the incident CP wave to its cross-polarization component with a high conversion coefficient of about 0.87 (0.92) after refraction (reflection) at 0.6 (1.67) THz. The full 2π phase shift can be obtained independently by varying the geometrical parameters of the unit-cell structure at two different operation modes. As proofs of concept, anomalous refraction and reflection, dual-band full-space cylindrical focusing metalens and vortex beam generation with different modes are numerically demonstrated. Our work provides an effective method to integrate two or more different functionalities into a simple metasurface-based device, and the independent phase modulation characteristic of our proposed metasurface also shows infinite potential in wavefront control of full space.
Extended analytical solutions of the Bohr Hamiltonian with the sextic oscillator
Authors: Lévai G , Arias J M 
Published: November 2020

Abstract
Low-lying collective quadrupole states in even–even nuclei are studied for the particular case of a γ-unstable potential within the Bohr Hamiltonian. In particular, the quasi-exactly solvable β-sextic potential is extended to cover the most relevant part of the low-lying spectra in nuclei. In previous papers (2004 Phys. Rev. C
69 014304, 2010 Phys Rev. C
81 044304), the same situation was solved for β-wavefunctions with up to one node (M = 0, 1), which are relevant for the first few low-lying states. Here, the model space is enlarged by including β-wavefunctions also with two nodes (M = 2), which generate many more states, in order to make it useful for actual fittings and more detailed checking of shape phase transitions between spherical and γ-unstable β-deformed shapes in nuclei. In addition to the energy eigenvalues and wavefunctions, closed analytical formulas are obtained for electric quadrupole and monopole transition probabilities too. The model is applied to the chains of even Ru and Pd isotopes to illustrate the transition between the spherical and deformed γ-unstable phases. These applications indicate that the optional extension of the model with a phenomenologic rotational term L ⋅ L is consistent with the experimental data.
Molecular insights into shock responses of amorphous polyethylene
Authors: Liao Lijuan , Wang Xintianyang , Huang Chenguang 
Published: November 2020

Abstract
Shock responses of amorphous polyethylene (APE) were characterized utilizing two different types of methodology, direct non-equilibrium molecular dynamics (NEMD) and multi-scale shock technique (MSST). Providing a detailed physical view of the shock front itself, pico-second time resolved evolution of plasticity behind the shock front was explored by NEMD through simulating piston driven shock compression. The induced-shock propagation and reflection were visualized according to the evolution of the particle displacement, particle velocity field and pressure field. Exponential relations between the compression rate in a shock wave and the hydrodynamic pressure, in addition, the thickness of shock front and the hydrodynamic pressure were clarified, which quantitatively indicate the shrinkage of shock front resulted from higher compression strength under larger piston velocity. On the other hand, in addition to reproducing the final compressed states, the thermo-dynamical state variables behind the leading shock front were captured by MSST with a much smaller computational cell with enough efficiency and accuracy. Hugoniot relations were obtained to predict the bulk sound speed and two material constants indicating the compressibility with reliable values compared with the existing results. Temperature-dependency was clarified as that high temperature reduces the bulk sound speed with low density and improves the compressibility of material. The temperature-sensitivity of compressibility weakens or even disappears during the transition from glassy state to rubbery state. The critical shock velocity, which equals to the bulk sound speed at a given temperature, was specified to guarantee stable shock wave instead of quasi-isentropic wave propagation in APE. Only a single plastic shock wave with a steep front travelling at a constant velocity greater than the bulk sound speed generates in APE, resulting in the over-driven in the material.
Quality Control in Civil Engineering Construction Based on Deep Learning
Authors: Mu Zhanchun 
Published: November 2020

Abstract
In the process of rapid growth of China’s construction industry, for civil engineering construction, its construction quality must be guaranteed to be able to drive China’s construction industry to the world’s advanced level. Based on deep learning, this paper discusses the types of bridges and detects their main components to achieve the quality control of the main components of the bridge. This paper analyzes the quality problems in civil engineering construction, and uses the Alex Net network model in the convolutional neural network to identify the bridge type; Faster R-CNN is used to detect the main components in real time. After testing and verification, the application method proposed in this paper has achieved satisfactory results, and the accuracy of model detection has reached 98.8%. The research in this paper applies advanced science and technology to the field of civil engineering construction to achieve automation and informatization is no longer out of reach, achieve the purpose of construction quality control, and promote the sustainable development of China’s construction industry.
Research on Deepening Design and Construction of Cross-Sea Tunnel Based on the Principle of Prefabricated Building
Authors: He Jia 
Published: November 2020

Abstract
With the development of the economy and the rapid progress of the construction level, the construction of the cross-sea tunnel began to gradually promote and further promoted. China gradually ushered in the peak period of undersea tunnel construction, has built xiamen, Qingdao, guangzhou, Shanghai chongming island and other undersea tunnels. However, due to the late start of cross-sea tunnel construction compared with western countries, there is still a lack of certain construction experience, especially in the construction of cross-sea tunnel. The construction of the cross-sea tunnel has put forward higher requirements on the construction level. In terms of the design and construction of the cross-sea tunnel, China is still in the initial stage of exploration and still needs unremitting research. Based on this deepening design and construction of cross-sea tunnel has become the focus of research. Based on the principle of prefabricated building and relevant calculation with the GO method, this paper calculates the reliability and risk of prefabricated building in the construction of cross-sea tunnel, and puts forward the deepening design and construction method of cross-sea tunnel on this basis. On the one hand, it is beneficial to the further development of cross-sea tunnel construction in China. On the other hand, it provides a certain theoretical basis for future research on related aspects.
The Structural Design Method of Prefabricated Buildings based on BIM Technology
Authors: Yang Jiarui 
Published: November 2020

Abstract
Prefabricated building is the direction of the construction industry’s transformation, and BIM technology is an effective means to promote the development of prefabricated buildings. This paper firstly explains the connotation of BIM technology and its advantages in Prefabricated buildings design, and proposes a new structural design method of fabricated buildings based on BIM Technology. Secondly, finite element analysis is used to analyze and recheck the formed BIM model, and the comparison of analysis results with the specifications are helps to make some adjustments to the BIM model when necessary. Finally, the algorithm design for analysis and optimization is realized.
Effects of Ca(OH)2 on Three Dietary Nutrients in Jujube Fruits
Authors: Wang Ding , Yang Xue , Xing Wenhui , Liu Chunlei , Chang Huiping 
Published: November 2020

Abstract
For the prevention and control of jujube disease, the improvement of jujube quality and the improvement of dietary nutrients. The changes of three dietary nutrients in Huping jujube were studied under different Ca (OH)2 concentrations. The results showed that: 1. Low concentration of Ca(OH)2 solution could significantly increase the content of VC and protein in Huping jujube pulp, and the content of VC and protein in Huping jujube pulp showed a downward trend with the increase of solution concentration; 2. Medium concentration of Ca(OH)2 solution could significantly increase the total dietary fiber in Huping jujube pulp and concentration is too high or too low results are not satisfactory.
Design of the Construction Plan of the House Crowdfunding
Authors: Wu Shenggen 
Published: November 2020

Abstract
Crowdfunding is a new real estate form in the Internet age. There is a planning scheme of public-funded housing, which needs to consider many factors, such as floor area ratio, development cost, tax rate, expected revenue and so on. According to the national policy, the requirements of floor area ratio, development cost and development cost are different. This paper will calculate the cost, income, floor area ratio and value-added tax of the scheme and gives the design and construction plan.
Innovative Design of Earthworm Excrement Separator in the Disposal of Livestock and Poultry Manure
Authors: Bao Zhenbo , Fang Meijian , Li Yubin , Zhang Wennan , Peng Jinxing 
Published: November 2020

Abstract
With the development of large-scale aquaculture, livestock and poultry manure pollution has become one of the priorities of rural environmental governance. Feeding treatment of livestock and poultry manure is an effective method for safe disposal and utilization of livestock and poultry manure. Separation and harvesting of earthworm manure, earthworm living bodies and residual organic wastes is a key link in the treatment, and the separating sieve of earthworm manure is one of the key equipment. On the basis of the overall scheme design and working principle analysis of the earthworm excrement vibration separating sieve, the innovative design of earthworm excrement vibration separating sieve is carried out from the following aspects: adopting eccentric rotating mechanism to vibrate rotating sieve cylinder, adopting crank rocker feeding mechanism to vibrate dynamic feeding, adopting three-stage sieving mode, adopting feeding barrier plate to slow down material moving speed, and adopting detachable structure of sieve cylinder, etc., it can effectively improve the sieving efficiency of earthworm excrement vibration separating sieve, improve the convenience of disassemble and assembly, reduce the space occupied by transportation, and improve the popularization of earthworm excrement vibration separating sieve.
Application of Green Building Construction in Construction Management
Authors: Zhou Jun 
Published: November 2020

Abstract
The construction stage of the building project is an important link that takes the longest time, the most complex technology and the greatest impact on the quality level of the green building in the whole life cycle of the building. Therefore, the first step is to start from the construction stage in order to improve the quality management level of green building and realize the maximization of green building quality and environmental, economic and social benefits. This paper focuses on the construction quality management in the whole process of green building planning, design, construction, operation and scrapping system, introduces the idea of green building engineering, studies the construction quality problems of green building, and puts forward a new construction quality management strategy and mode. The new construction quality management strategy and mode can control the quality of green building construction stage, and promote the development and promotion of green building action.
Effects of Overwintering Green Manure Brassica napus L. on Chemical Properties and Heavy Metal Content of Paddy Soil
Authors: Wen Yanjie , Du Jin , Yu Shiguo , Zhao Fei , Li Zifang , Liu Jian , Cao Gaoyi , Xiang Chunyang 
Published: November 2020

Abstract
In order to explore the response mechanism of heavy metal content in Oryza sativa L. fields under winter green manure. In this study, through field experiments, the changes of soil chemical properties and heavy metal content in Brassica napus L. and Oryza sativa L. at different growth stages were analyzed. The results are as follows: the pH value in Brassica napus L. harvest stage is higher than that before sowing, while the pH value in Oryza sativa L. harvest stage is lower than that before sowing. Eh of Brassica napus L. soil is positive during the whole growth period, showing a fluctuating upward trend. Eh of soil decreased to negative value during the whole growth period of Oryza sativa L. The contents of As, Hg, Pb, Cd and Cr in the soil decreased gradually in the whole growth period of Brassica napus L., and decreased to the lowest level in the harvest period. During the whole growth period of Oryza sativa L., the content of Hg and Cd decreased, while the content of Pb and Cr increased in the harvest period compared with before sowing. Therefore, planting green manure Brassica napus L. in winter is beneficial to alleviate heavy metal pollution in soil.
Process Optimization of Salidroside with Cellulase Auxiliary Ultrasonic-Assisted Extraction from Rhodiola Cretinii by Response Surface Methodology
Authors: Wang Baihui , Wang Qingyan , Lu Zhaoying , Liu Junxia , Dou Fengming 
Published: November 2020

Abstract
The cellulase auxiliary ultrasonic-assisted extraction process of salidroside from Rhodiola cretinii was optimized by response surface methodology. The extraction content of salidroside was measured by HPLC, On the basis of single factor experiment, extraction time, quantity of cellulase, extraction temperature and ethanol concentrations were selected as independent variables, and the extraction content of salidroside was selected as response value, Box-Behnken design was adopted and optimized extraction process in this experiment, the optimum extraction conditions were confirmed. The results showed that the optimu extraction conditions were as follows: 29 min, 0.18% cellulose, 43°C, 39% ethanol concentration, the extraction content of salidroside was 4.49 mg/g. Through the verified tests, the content of salidroside was 4.39 mg/g after cellulase was added, the content of salidroside without cellulase was 0.48 mg/g. The response surface analysis can predict the experimental results well, and this experiment can provide a more reasonable and effective method for extracting salidroside from R. cretinii.
Biomass Renewable Energy Environmental Protection Low Carbon City Power Generation and Heating Device
Authors: Zhan Tingjun , Bie Rushan , Lin Li , Wu Ao 
Published: November 2020

Abstract
Biomass energy is a kind of renewable energy. The development and utilization of biomass energy can alleviate the pressure of energy shortage, reduce environmental pollution, and improve the future energy structure. This article aims to achieve eco-friendly, low-carbon, intelligent, modern, smoke-free, energy-cyclable and renewable energy through the research on biomass renewable energy and environmental protection low-carbon city power generation and heating devices. This paper proposes a modern utility model biomass renewable energy environmental protection low-carbon city power generation and heating device, and the feasibility of the device has been verified through experiments. It is concluded that the change in raw material consumption has little effect on the gas components and calorific value in biogas. The power generation and heating device has good adaptability to the amount of raw materials, and its comprehensive pollutant emissions are compared with traditional coal and petroleum. Power generation and heating facilities are reduced by 99%. The research in this paper helps to alleviate the shortage of energy supply in my country, develop a circular economy, and promote the sustainable development of social economy.