bluuebunny/crossref_metadata_2025 huggingface dataset:
Genome-wide association study of Alzheimer’s disease CSF biomarkers in the EMIF-AD Multimodal Biomarker Discovery dataset
Authors: Hong Shengjun , Prokopenko Dmitry , Dobricic Valerija , Kilpert Fabian , Bos Isabelle , Vos Stephanie J. B. , Tijms Betty M. , Andreasson Ulf , Blennow Kaj , Vandenberghe Rik , Cleynen Isabelle , Gabel Silvy , Schaeverbeke Jolien , Scheltens Philip , Teunissen Charlotte E. , Niemantsverdriet Ellis , Engelborghs Sebastiaan , Frisoni Giovanni , Blin Olivier , Richardson Jill C. , Bordet Regis , Molinuevo José Luis , Rami Lorena ,   Alzheimer’s Disease Neuroimaging Initiative (ADNI), Kettunen Petronella , Wallin Anders , Lleó Alberto , Sala Isabel , Popp Julius , Peyratout Gwendoline , Martinez-Lage Pablo , Tainta Mikel , Dobson Richard J. B. , Legido-Quigley Cristina , Sleegers Kristel , Van Broeckhoven Christine , ten Kate Mara , Barkhof Frederik , Zetterberg Henrik , Lovestone Simon , Streffer Johannes , Wittig Michael , Franke Andre , Tanzi Rudolph E. , Visser Pieter Jelle , Bertram Lars
Published: November 2020

Alzheimer’s disease (AD) is the most prevalent neurodegenerative disorder and the most common form of dementia in the elderly. Susceptibility to AD is considerably determined by genetic factors which hitherto were primarily identified using case–control designs. Elucidating the genetic architecture of additional AD-related phenotypic traits, ideally those linked to the underlying disease process, holds great promise in gaining deeper insights into the genetic basis of AD and in developing better clinical prediction models. To this end, we generated genome-wide single-nucleotide polymorphism (SNP) genotyping data in 931 participants of the European Medical Information Framework Alzheimer’s Disease Multimodal Biomarker Discovery (EMIF-AD MBD) sample to search for novel genetic determinants of AD biomarker variability. Specifically, we performed genome-wide association study (GWAS) analyses on 16 traits, including 14 measures derived from quantifications of five separate amyloid-beta (Aβ) and tau-protein species in the cerebrospinal fluid (CSF). In addition to confirming the well-established effects of apolipoprotein E (APOE) on diagnostic outcome and phenotypes related to Aβ42, we detected novel potential signals in the zinc finger homeobox 3 (ZFHX3) for CSF-Aβ38 and CSF-Aβ40 levels, and confirmed the previously described sex-specific association between SNPs in geminin coiled-coil domain containing (GMNC) and CSF-tau. Utilizing the results from independent case–control AD GWAS to construct polygenic risk scores (PRS) revealed that AD risk variants only explain a small fraction of CSF biomarker variability. In conclusion, our study represents a detailed first account of GWAS analyses on CSF-Aβ and -tau-related traits in the EMIF-AD MBD dataset. In subsequent work, we will utilize the genomics data generated here in GWAS of other AD-relevant clinical outcomes ascertained in this unique dataset.
RETRACTED ARTICLE: Long noncoding RNA HEIH depletion depresses esophageal carcinoma cell progression by upregulating microRNA-185 and downregulating KLK5
Authors: Wang Bing , Hao Xuezhi , Li Xingkai , Liang Yicheng , Li Fang , Yang Kun , Chen Hengqi , Lv Fang , Gao Yushun
Published: November 2020

Numerous studies have reported the association of long non-coding RNAs (lncRNAs) in cancers, yet the function of lncRNA high expressed in hepatocellular carcinoma (HEIH) in esophageal carcinoma (EC) has seldom been explored. Here, we aimed to explore the mechanism of HEIH on EC via microRNA-185 (miR-185)/kallikrein-related peptidase 5 (KLK5) modulation. Cancer and non-tumoral tissues were collected, in which HEIH, miR-185 and KLK5 expression were detected, as well as their correlations. Also, the relation between the prognosis of EC patients and HEIH/miR-185/KLK5 expression was clarified. EC cells (KYSE-30 and TE-1) were screened for subsequent gain- and loss-of-function assays and their biological functions were further monitored. Tumor volume and weight in EC mice were also measured. Results from this study indicated that HEIH and KLK5 were elevated and miR-185 was declined in EC. The positive correlation was seen in HEIH and KLK5 expression, while the negative correlation was observed in HEIH or KLK5 and miR-185 expression. High HEIH and KLK5 indicated worse prognosis and high miR-185 suggested better prognosis of EC patients. Depleting HEIH or restoring miR-185 suppressed the malignant phenotypes of EC cells, and delayed tumor growth in EC mice. HEIH was found to bind with miR-185 to regulate KLK5 expression. Overexpressing KLK5 alone promoted EC cell progression while up-regulating miR-185 reversed such effects on EC cells. Collectively, we reveal that HEIH depletion dampens EC progression by upregulating miR-185 and downregulating KLK5, which provides novel treatments for EC.
Opportunistic genomic screening. Recommendations of the European Society of Human Genetics
Authors:   On behalf of the European Society of Human Genetics, de Wert Guido , Dondorp Wybo , Clarke Angus , Dequeker Elisabeth M. C. , Cordier Christophe , Deans Zandra , van El Carla G. , Fellmann Florence , Hastings Ros , Hentze Sabine , Howard Heidi , Macek Milan , Mendes Alvaro , Patch Chris , Rial-Sebbag Emmanuelle , Stefansdottir Vigdis , Cornel Martina C. , Forzano Francesca
Published: November 2020

If genome sequencing is performed in health care, in theory the opportunity arises to take a further look at the data: opportunistic genomic screening (OGS). The European Society of Human Genetics (ESHG) in 2013 recommended that genome analysis should be restricted to the original health problem at least for the time being. Other organizations have argued that ‘actionable’ genetic variants should or could be reported (including American College of Medical Genetics and Genomics, French Society of Predictive and Personalized Medicine, Genomics England). They argue that the opportunity should be used to routinely and systematically look for secondary findings—so-called opportunistic screening. From a normative perspective, the distinguishing characteristic of screening is not so much its context (whether public health or health care), but the lack of an indication for having this specific test or investigation in those to whom screening is offered. Screening entails a more precarious benefits-to-risks balance. The ESHG continues to recommend a cautious approach to opportunistic screening. Proportionality and autonomy must be guaranteed, and in collectively funded health-care systems the potential benefits must be balanced against health care expenditures. With regard to genome sequencing in pediatrics, ESHG argues that it is premature to look for later-onset conditions in children. Counseling should be offered and informed consent is and should be a central ethical norm. Depending on developing evidence on penetrance, actionability, and available resources, OGS pilots may be justified to generate data for a future, informed, comparative analysis of OGS and its main alternatives, such as cascade testing.
Supporting elimination of lymphatic filariasis in Samoa by predicting locations of residual infection using machine learning and geostatistics
Authors: Mayfield Helen J. , Sturrock Hugh , Arnold Benjamin F. , Andrade-Pacheco Ricardo , Kearns Therese , Graves Patricia , Naseri Take , Thomsen Robert , Gass Katherine , Lau Colleen L.
Published: November 2020

The global elimination of lymphatic filariasis (LF) is a major focus of the World Health Organization. One key challenge is locating residual infections that can perpetuate the transmission cycle. We show how a targeted sampling strategy using predictions from a geospatial model, combining random forests and geostatistics, can improve the sampling efficiency for identifying locations with high infection prevalence. Predictions were made based on the household locations of infected persons identified from previous surveys, and environmental variables relevant to mosquito density. Results show that targeting sampling using model predictions would have allowed 52% of infections to be identified by sampling just 17.7% of households. The odds ratio for identifying an infected individual in a household at a predicted high risk compared to a predicted low risk location was 10.2 (95% CI 4.2–22.8). This study provides evidence that a ‘one size fits all’ approach is unlikely to yield optimal results when making programmatic decisions based on model predictions. Instead, model assumptions and definitions should be tailored to each situation based on the objective of the surveillance program. When predictions are used in the context of the program objectives, they can result in a dramatic improvement in the efficiency of locating infected individuals.
In situhigh pressure neutron diffraction and Raman spectroscopy of 20BaO–80TeO2glass
Authors: Khanna Atul , Kaur Amarjot , Hirdesh  , Tyagi Shekhar , Funnell Nicholas P. , Bull Craig. L.
Published: November 2020

The short-range structure of 20BaO–80TeO2glass was studiedin situby high pressure neutron diffraction and high pressure Raman spectroscopy.
Arrayed silk fibroin for high-performance Li metal batteries and atomic interface structure revealed by cryo-TEM
Authors: Zhang Baolin , Shi Haodong , Ju Zhijin , Huang Kai , Lian Cheng , Wang Yao , Sheng Ouwei , Zheng Jianhui , Nai Jianwei , Liu Tiefeng , Jin Yang , Liu Yujing , Zhang Chuanfang (John) , Tao Xinyong
Published: November 2020

An upright silk fibroin/lithium foil alternating array is fabricated to facilitate an unexpected SEI with a robust layered structure of lithium deposited on the anode (revealed by cryogenic electron microscopy), thus significantly suppressing dendrites.
Heuristic approach for jointly optimising FeICIC and UAV locations in multi‐tier LTE‐advanced public safety HetNet
Authors: Kumbhar Abhaykumar , Binol Hamidullah , Singh Simran , Güvenç İsmail , Akkaya Kemal
Published: November 2020

Unmanned aerial vehicles (UAVs) enabled networks can enhance wireless connectivity and support emerging services. However, this would require system‐level understanding to modify and extend the existing terrestrial network infrastructure. In this study, the authors integrated UAVs as user equipment and base stations into an existing long term evolution (LTE)‐Advanced heterogeneous network (HetNet) and provide system‐level insights of this three‐tier LTE‐Advanced air‐ground HetNet (AG‐HetNet). The performance of AG‐HetNet was evaluated through brute‐force technique and heuristics algorithms in terms of the fifth percentile spectral efficiency (5pSE) and coverage probability. In particular, system‐wide 5pSE and coverage probability were compared, when unmanned aerial base stations (UABSs) are deployed on a fixed hexagonal grid and when their locations are optimised using a genetic algorithm (GA) and elitist harmony search algorithm based on the genetic algorithm (eHSGA); while jointly optimising the inter‐cell interference coordination (ICIC) and cell range expansion (CRE) network parameters for different ICIC techniques. The simulation results show that the heuristic algorithms (GA and eHSGA) outperform the brute‐force technique and achieve better peak values of coverage probability and 5pSE. Simulation results also show that a trade‐off exists between peak values and computation time when using heuristic algorithms. Furthermore, the three‐tier hierarchical structuring of reduced power subframes further‐enhanced ICIC (FeICIC) defined in 3GPP Rel‐11 provides considerably better 5pSE and coverage probability than the 3GPP Rel‐10 with almost blank subframes eICIC. They also investigated the network performance for different practical deployment heights of UABS and they found low‐altitude UABSs to perform sparsely better than medium‐altitude UABSs.
Experimental investigation and numerical simulation of an inline low‐head microhydroturbine for applications in water pipelines
Authors: Amjadi Hosain , Khashehchi Morteza , Soltani Jaber
Published: November 2020

The excess hydraulic pressure in water supply network pipes is one of the major problems in design and implementation stages of these projects. To reduce the excess pressure and maintain network safety, a variety of pressure reducing valves are used, which waste all the excess pressure. However, having used the appropriate water microturbines, while reducing the pressure loss to an optimum value, the system could recover the wasted energy. In this study, numerical simulation and experimental investigation of microturbine in a water supply system have been performed to evaluate the electrical power generation capacity of an over‐pressured network. The numerical simulation of the microturbine was conducted using Ansys‐Fluent software. The microturbine has been experimentally investigated with different inlet flow rates, the effect of different post‐microturbine heads and also the effect of different opening angles of guide plate on its performance, three different scenarios were defined. Based on numerical simulation and laboratory results, the best performance of the microturbine was obtained when the inlet flow rate was 0.01184 m3 /s and also opening angle 20° for the guide plate, in which the microturbine output was equal to 59.01 W. The generated power by the microturbine can meet the electrical needs of sensors and other network monitoring equipment.
Optimization of plow adjustment
Authors: Khaliullin Damir , Belinsky Alexandr , Valiev Ayrat , Lukmanov Ruslan , Bourges Gaston
Published: November 2020

Optimization of plow adjustment is very important for national economy, especially in solving problems of increasing agricultural production and reducing energy consumption during plowing. One of the ways to optimize the plow adjustment is to reduce the friction forces of the plow from pressure on the bottom of the furrow and the walls of the furrow. To optimize the configuration of the plow, various methods and techniques are proposed and used that have certain advantages and disadvantages. One of the promising directions of reducing the friction forces of the plow is a dynamic method that uses adjustments of specific devices of the plow and tractor linkage mechanisms. However, one of the significant drawbacks of these adjustments is the shift of the tractor traction point from the longitudinal axis of symmetry of the tractor. The accepted working hypothesis and the studies of the process dynamics made it possible to determine the optimal parameters of the calculated and structural displacement of the tractor thrust point from the resistance line of the plow, as well as to develop recommendations for manufacturers of plows and agricultural tractors.
Is certification an effective tool to improve smallholdings’ performance?
Authors: Chalil Diana , Barus Riantri
Published: November 2020

Oil palm smallholders have rapidly grown but their performance is relatively low compared to other producer groups. One of the programs that are expected to address this is certification. However, only a small percentage of smallholders received the certification in practice. This study was conducted to analyze the effectiveness of certification to improve smallholder oil palm plantations’ performance. The study was conducted in North Sumatra, South Sumatra, and Riau. Data were collected from 707 sample smallholders. Performance is measured from economic aspects, namely productivity, selling prices, fertilizer usage and harvest criteria, and environmental aspects, namely waste treatment and paraquat pesticide usage. The data were then analyzed using the One-Way ANOVA test and the One-Sample t-test. The results show significant differences in productivity and selling prices between the plasma and other smallholder groups, but not between the certified and non-certified ones. The results also show significant differences in the waste treatment between the certified and non-certified groups, but not in paraquat pesticides. Therefore, it can be concluded that certification cannot improve smallholder oil palm plantations’ performance if not followed by intensive and sustainable partnership assistance.
Coaching self-defense under COVID-19: challenges and solutions in the police and civilian domain
Authors: Koerner Swen , Staller Mario S.
Published: November 2020

The spread of SARS-CoV-2 has led to a general shutdown of police and civilian self-defense training. While means of distance learning such as online teaching appear to be feasible for theory dominant subjects addressing cognitive resources of the learner, combat-related practices like self-defense trainings don´t seem to fit into the realm of virtual learning due to their bodily foundation. This is made clear by the collective perplexity of police and civilian coaches, gyms and organizations, on how to proceed with training during the lockdown in general, while approaches of distance learning (e.g., online learning) have rarely been considered. In the following article, we tackle the situation of police and civilian self-defense coaches in times of Corona. In a first step, contextual changes and challenges of coaching self-defense are identified through the lenses of a professional coaching model. In line with basic assumptions of ecological dynamics, adaptability seems to be the decisive resource for the coaching and training of self-defense in times of Corona. As an example for such an adaptation in training practice, a conceptual framework for distance-based self-defense training in the civilian and police domain is presented. This framework is adjusted to the respective requirements of physical distancing and adopted to novel security matters within the public sphere caused by the current regulations. In sum, the article attempts to provide ideas and orientation for police and civilian self-defense coaches as well as for their own development possibilities.
The hierarchical stochastic schrödinger equations: Theory and applications
Authors: Wang Yu-Chen , Zhao Yi
Published: November 2020

The hierarchical stochastic Schrödinger equations (HSSE) are a kind of numerically exact wavefunction-based approaches suitable for the quantum dynamics simulations in a relatively large system coupled to a bosonic bath. Starting from the influence-functional description of open quantum systems, this review outlines the general theoretical framework of HSSEs and their concrete forms in different situations. The applicability and efficiency of HSSEs are exemplified by the simulations of ultrafast excitation energy transfer processes in large-scale systems.
A new method to improve the numerical stability of the hierarchical equations of motion for discrete harmonic oscillator modes
Authors: Yan Yaming , Xing Tao , Shi Qiang
Published: November 2020

The hierarchical equations of motion (HEOMs) have developed into an important tool in simulating quantum dynamics in condensed phases. Yet, it has recently been found that the HEOM may become numerically unstable in simulations using discrete harmonic oscillator modes [I. S. Dunn, et al., J. Chem. Phys. 150, 184109 (2019)]. In this paper, a new set of equations of motion are obtained based on the equivalence between the HEOM for discrete harmonic oscillator modes and the mixed quantum-classical Liouville equation. The new set of equations can thus be regarded as the expansion of the same phase space partial differential equation using different basis sets. It is shown that they have similar structures as the original HEOM but are free from the problem of numerical instability. The new set of equations are also incorporated into the matrix product state method, where it is found that the trace of the reduced density operator is not well conserved during the propagation. A modified time-dependent variational principle is then proposed to achieve better trace conservation.
A combined numerical and experimental study to elucidate primary breakup dynamics in liquid metal droplet-on-demand printing
Authors: Beck Victor A. , Watkins Nicholas N. , Ashby Ava S. , Martin Aiden A. , Paul Phillip H. , Jeffries Jason R. , Pascall Andrew J.
Published: November 2020

Droplet-on-demand liquid metal jetting is emerging as a powerful technology for the additive manufacturing of metallic parts. The success of this method hinges on overcoming several technological challenges. The principal one among these challenges is the controlled repeatable ejection of single uniform droplets. Due to the high density and surface tension of liquid metals, the droplet ejection process occurs near the minimal extremes of the printability phase diagram, defined by acceptable ranges for the Weber (We) and Ohnesorge (Oh) numbers. In this work, we experimentally demonstrate the satellite-free ejection of pneumatically actuated molten tin droplets in this extreme corner of printability and use a combination of high-speed video analysis and volume-of-fluid modeling to elucidate the droplet dynamics. While the simulations at low Oh and We can correctly describe several aspects of the breakup process, such as an increasing tail and pinch-point near the nozzle, no single parameter set can completely capture the droplet shape at breakup. Instead, the experimental droplet dynamics appear to include features from both high and low Oh breakup. This disagreement is ascribed to the incomplete description of the droplet ejection process including wetting and exit effects near the nozzle opening and surface effects such as transient cooling and oxide formation.
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.
Soil physical properties and soil water tension monitoring by wireless sensor network after reservoir and minimum tillage practices
Authors: Salem Haytham Mohamed , Muñoz-García Miguel-Ángel , Rodríguez María Gil
Published: November 2020

Rain-fed agriculture in central Spain is mostly water limited. Reservoir tillage (RT) can increase soil water content, thus helping overcome most factors limiting crop production in this region. The aim of this study was to investigate the short-term effects of two tillage practices on soil physical properties and water availability where rain-fed barley was being grown. A field experiment was established on a loamy soil for comparing RT and minimum tillage (MT). Bulk density and volumetric water content were measured in 5-cm increments to a depth of 30 cm. The soil water tension was monitored using a wireless sensor network with sensors at 10, 20, and 30 cm depths. The results showed that bulk density in RT and MT treatments at all soil depths were statistically similar. However, soil water tensions in the MT treatment were substantially higher than that in RT in the entire observation period at all depths. In conclusion, RT could be used to minimise risks from crop failure during the poorer rainy seasons, and it showed increased soil water retention and improved barley yield.
Pseudonyms as carriers of contextualised threat in 19th-century Irish English threatening notices
Authors: Peters Arne , van Hattum Marije
Published: November 2020

This 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

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

This 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.
Application of Electrolysis Water Hydrogen Production in the Field of Renewable Energy Power Generation
Authors: Zhan Tingjun , Bie Rushan , Shen Qianhao , Lin Li , Wu Ao , Dong Peng
Published: November 2020

The gradual depletion and burning of fossil fuels have brought huge pollution to the global ecological environment. Environmental governance and energy crisis have become double challenges faced by governments of many countries in the world. This paper explores the application of electrolysis water hydrogen production technology in the field of renewable energy power generation, in order to better promote the application and development of high temperature solid oxide electrolysis (TSOE) technology in the field of power generation. By investigating the changes in my country’s hydrogen energy production and demand, this paper concludes that the average annual growth rate of my country’s hydrogen production has continued to increase in recent years, and my country’s hydrogen demand reached 19.8 million tons in 2018. It is estimated that by 2030, my country’s hydrogen demand will reach 35 million tons, with a compound annual growth rate of 5.76%. Finally, when selecting large-scale hydrogen production technology from the high-TSOE hydrogen production technology in the field of power generation, the key problems to be solved and the renewable energy storage aspect are prospected for the application prospect of the electrolysis water hydrogen production technology in the field of power generation.
Economic evaluation of thermochemical conversion for rice straw-based second-generation bioethanol production in West Java
Authors: Harahap A F P , Ramadhan M Y A , Sahlan M , Hermansyah H , Roslan A M , Gozan M
Published: November 2020

Production of bioethanol through several routes from cheap materials such as agricultural solid waste is getting more interesting nowadays. Rice straw is one of the potential agricultural solid wastes that can be used as feedstock for bioethanol production due to a huge amount of availability, especially in South East Asia countries. In this study, the economics of rice straw-based bioethanol plant by thermochemical conversion was evaluated. The main processes involved in the plant are pretreatment, gasification, water-gas shift reaction, carbon dioxide removal, alcohol synthesis, and purification. The plant was planned to be located in Indramayu, West Java, Indonesia. The price of bioethanol set on this evaluation is US$ 0.61 per liter. The total capital expenditure (CAPEX) and operational expenditure (OPEX) of this plant were found to be US$ 122,614,000 and US$ 20,175,910, respectively. The return on investment (ROI) is 66.96%. The internal rate of return (IRR) is 24.08%. The net present value (NPV) is US$ 689,074,000. Finally, the payback period is 4.5 years. The result of this study shows that this bioethanol plant is feasible and very profitable to be implemented.