bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of Influence of Glazing Systems on Indoor Environment of a Passive Solar Building in Lhasa
Authors: Gou Wenshi , Su Hua 
Published: July 2020

Abstract
Solar energy, which is inexhaustible and clean, has been widely used in passive or positive manners. A well-constructed passive solar house can improve the indoor environment and save energy of mechanical systems. Design of glazing system plays a vital role in passive solar buildings. This paper analyses influence of glazing systems on indoor environments of a passive teaching building in Lhasa, southwest on the Tibetan Plateau, China, for the purpose of optimizing retrofitting its windows. In this project no HVAC system is used, so indoor temperature is the main factor for evaluating the performance of different glazing systems. Four glazing systems were compared by computing uncomfortable hours and net heat addition of windows, using DesignBuilder. Economy is compared as well. Results show that single lowe clear 3mm (e=0.2) glazing leads to the most comfortable indoor environment in this project. Net heat of windows and comfortable rate are suggested to assess the overall performance of glazing systems. Generally speaking, we can’t use SHGC or U-Value to determine the best glass system only in the actual situation. Careful simulation is necessary to obtain the comprehensive performance of windows in a passive solar building.
A Brief Discussion on Teaching and Scientific Research Innovation of Assembly Building Technology
Authors: Pan Hongke 
Published: July 2020

Abstract
Construction industrialization and assembly building are the trend of development in the future, but the current related assembly technology and level is still relatively lagging behind, and lack of scientific research. The talents in the field of assembly building is very scarce, far from meeting the needs of production and society. In view of the existing problems in the development of assembly buildings, combined with the experience of the author’s workplace, the author puts forward the specific plans and measures for personnel training and teaching reform by using the methods of investigation and summary analysis, and probes into the key technologies for scientific research and innovation of assembly buildings and the plans for carrying out the research. The reform research has a good effect in our practical application, and provides a reference for further research.
Discussion on Some Problems of Regulations and Standards of Coal Industry
Authors: Fan Xiaogang , Qin Hongmei 
Published: July 2020

Abstract
In order to ensure the safety and health of the coal mine safety production and personnel, the state had issued a variety of laws and regulations and industry standards. Coal mining enterprises must abide by these laws and regulations. However, due to the fuzzy or inconsistent conditions of individual clauses, these regulations and industry norms lead to various problems in the actual production practice of coal mines. Combining with coal mine production practice, several issues such as the definition of coal and gas outburst, gas drainage standards and pore pressure measurement in tunnelling face, this paper puts forward some suggestions on the revision of the rules and standards for the specific industries of coal mine, which will provide reference for the revision of the rules and standards in the future.
Experimental Study on Physical and Mechanical Properties of Mixed Filling behind Retaining Wall
Authors: Xiaoyi CAO 
Published: July 2020

Abstract
Through large-scale triaxial shear test and particle sieving test, the particle breakage characteristics and shear strength of mixed coarse-grained fillers behind a high filling wall in Guizhou Province were studied. The effects of mudstone content, particle gradation, relative density and stress state of coarse-grained mixed fillers on particle breakage and shear strength were analyzed. With the increase of mudstone content, gradation and relative density, the particle breakage rate decreases. With the increase of confining pressure and stress, the particle breakage rate of coarse-grained soil also increases. The shear strength cohesion increases first and then decreases with the increase of mudstone content, and the internal friction angle decreases gradually. With the improvement of particle size distribution and the increase of relative density, the cohesion and internal friction angle increase. At the same time, a multivariate non-linear regression model was established to synthesize the comprehensive internal friction angle. The predicted values were in agreement with the experimental data, and the optimum mixed packing parameters were selected.
Study on Mechanical Behavior of Viscoelastic Polymer
Authors: Zhang WX , Chen YG 
Published: July 2020

Abstract
Due to the energy loss in deformation process, the mechanical problems of polymer materials can not keep the energy conservation, and a series of calculation methods of elasticity can not be directly applied. In this paper, we find that the differential stress-strain relationship can be transformed into algebraic equation form according to the correspondence principle. That is, in the Laplace space, the viscoelastic problem maintains the conservation.
Simulations of corrugated steel bracing reinforing infilled RC frame: influence factors
Authors: Feng Ningning , Wu Changsheng , Li Jianfen , Huang Lei 
Published: July 2020

Abstract
Based on the experimental infilled reinforced concrete (RC) frames strengthening by corrugated steel bracing, finite element (FE) analysis is carried out to compare with experimental research. Hysteresis curves, envelope curves, stiffness curves and failure modes of the corrugated steel bracing are studied to reveal the structural performance. Corrugated steel bracing is designed to resist lateral load in reinforcing concrete buildings. The results show that the deviations of the yield loads between test results and simulation are 11.1 % (forward direction) and 9.17 % (backward direction); the maximum loads between test results and simulation are 9.09 % (forward direction) and 6.52 % (backward direction), respectively. Ten models are studied to considering the key factors of corrugated steel bracing. The results show that the stiffness and maximum loads (forward and backward) are improved as the thickness increases. The ductility is reduced as the thickness increases.
Application Scheme Of Fiber Bragg Grating Sensor In Prefabricated Building
Authors: Zhou Canzong , Yao Zhengmao , Hu Yongqi , Hu Ziyi 
Published: July 2020

Abstract
Prefabricated building has the advantages of low energy consumption, high resource utilization and fast construction speed, which is the key technology for the development and upgrading of the future construction industry. In this paper, based on the existing shortcomings of prefabricated buildings, as well as the characteristics of anti-electromagnetic interference and strong corrosion resistance of fiber Bragg grating sensors, an application scheme is proposed to improve the safety of prefabricated buildings by utilizing the stress detection functions of fiber Bragg grating sensors.
Research on a new-type caisson with conic ice resistant structure in wharf application
Authors: Bing Xiao , Peng Yun , Wang Guangfu , Shao Ruoli , Dong Meng 
Published: July 2020

Abstract
Wharf structure in frozen areas is easily influenced by the heavy ice load and therefore it is necessary to adopt anti ice strategy in wharf construction. The conventional ice resistant strategies generally include designing the structure by using the extreme ice load and using solid structures in the ice-affected parts, which make the structure investment cost high due to the large ice load. To resolve above problems, this paper proposes a new type of ice resistant structure, namely the round caisson with conic ice resistant structure. The structure can transform failure type of the flow ice from compressive failure to bending failure, which can greatly reduce the ice load and therefore the project investment. To validate the ice resistant effect of the structure, a comparation of the ice load of the proposed structure with non-conic structure is conducted by mathematical calculation, and this paper develops a physical model experiment considering the natural condition of Changxing Island Port Area. The results obtained from above experiments show that (1) the measured ice load obtained by model experiment is reduced, (2) and the ice load on the conic ice resistant structure is much smaller than that on the non-conic structure.
Enhanced photoelectric performance of GQDs anchored WO3 with a ‘dot-on-nanoparticle’ structure
Authors: Hu Jiaxin , Lei Yun , Yuan Mei , Lin Yuanyuan , Jiang Zicong , Ouyang Zhong , Du Peng , Wu Yuncui 
Published: July 2020

Abstract
WO3/GQDs-H composites were synthesized by a hydrothermal method using WCl6 as the tungsten source. Various analyses were conducted to investigate the composition, structure, morphology and performance of the composites. WO3/GQDs-H composites formed a special ‘dot-on-nanoparticle’ structure by anchoring GQDs on the surface of WO3. The lattice spacings of 0.34 and 0.386 nm were attributed to the (002) facets of GQDs and WO3, respectively. Compared to blank WO3, an obvious shift to higher value in the binding energy of W6+ and W5+ and a decreased ID/IG value in the Raman spectra could be observed for WO3/GQDs-H composites. The photocurrent value of hydrothermal synthesized WO3/GQDs-H composites achieved 1.56 × 10–5 A cm−2, which was obviously prior to that of blank WO3 and mechanically mixed WO3/GQDs. The result indicated that the hydrothermal process promoted GQDs as a conductive route to transfer photoexcited electrons and improve the photoelectric performance of WO3/GQDs in comparison to the mechanical mixture process.
Microstructure evolution and tensile property of a first-generation single crystal superalloy fabricated by laser melting deposition
Authors: Wang Guowei , Shen Xianfeng , Yang Jialin , Liang Jingjing , Zhou Yizhou , Sun Xiaofeng 
Published: July 2020

Abstract
Additive manufacturing (AM) of single crystal superalloys has got some progress in recent researches, but there are few reports on eliminating recrystallization or mechanical properties of single crystal superalloys by AM. In this work, single-crystal samples of SRR99 were fabricated at high temperature by laser melting deposition (LMD). Owing to the high temperature of substrate in the deposition process, recrystallization in the following heat treatment process was eliminated. The contrast sample of SRR99 was prepared by directional solidification, and the microstructure evolution during heat treatment and tensile property of deposited samples were analyzed. The results showed that the shapes of the γ′ phase became irregular after solution treatment in deposited samples. After a solid solution and aging treatment, the γ′ phase size is larger and the γ′ volume fraction is slightly lower in deposited samples than in the contrast sample. As a result, the yield and tensile strength of deposited samples are slightly lower than that of contrast samples, but the plasticity of deposited samples is better.
Identification of SARS-CoV-2 in a Proficiency Testing Program
Authors: Edson Daniel C , Casey Danielle L , Harmer Susan E , Downes Frances P 
Published: July 2020

Abstract

Objectives
At the onset of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic in the United States, testing was limited to the Centers for Disease Control and Prevention–developed reverse transcription polymerase chain reaction assay. The urgent and massive demand for testing prompted swift development of assays to detect SARS-CoV-2. The objective of this study was to assess the accuracy of these newly developed tests.

Methods
The American Proficiency Institute sent 2 test samples to 346 clinical laboratories in order to assess the accuracy of SARS-CoV-2 assays. The positive sample, containing 5,175 viral copies/mL, was fully extractable with SARS-CoV-2 viral capsid protein and RNA. The negative sample, with 3,951 viral copies/mL, contained recombinant virus particles with sequences for targeting human RNAase P gene sequences.

Results
Of the laboratories submitting results, 97.4% (302/310) correctly detected the virus when present and 98.3% (296/301) correctly indicated when the virus was not present. Among incorrect results reported in this proficiency challenge, 76.9% (10/13) were likely related to clerical error. This accounts for 1.6% (10/611) of all reported results.

Conclusions
Overall performance in this SARS-CoV-2 RNA detection challenge was excellent, providing confidence in the results of these new molecular tests and assurance for the clinical and public health decisions based on these test results.
Impact of Viral Load Monitoring on Retention and Viral Suppression: A Regression Discontinuity Analysis of South Africa’s National Laboratory Cohort
Authors: Harlow Alyssa F , Bor Jacob , Brennan Alana T , Maskew Mhairi , MacLeod William , Carmona Sergio , Mlisana Koleka , Fox Matthew P 
Published: July 2020

AbstractSouth African guidelines recommend repeat viral load testing within 6 months when human immunodeficiency virus (HIV) viral loads exceed 1,000 copies/mL. We assessed whether South African facilities follow viral load monitoring guidelines and whether guidelines improve HIV-related outcomes, using a regression discontinuity design in a national HIV cohort of 174,574 patients (2013–2015). We assessed whether patients with viral loads just above versus just below 1,000 copies/mL were more likely to receive repeat testing in 6 months, and we compared differences in clinic transfers, retention, and viral suppression. The majority (67%) of patients with viral loads of &gt;1,000 copies/mL did not receive repeat testing within 6 months, and these patients were 8.0% (95% confidence interval (CI): 6.2, 9.7) more likely to receive repeat testing compared with ≤1,000 copies/mL. Eligibility for repeat testing (&gt;1,000 copies/mL) was associated with greater 12-month retention (risk difference = 2.9%, 95% CI: 0.6, 5.2) and combined suppression and retention (risk difference = 5.8%, 95% CI: 3.0, 8.6). Patients with viral loads of &gt;1,000 copies/mL who actually received repeat testing were 85.2% more likely to be both retained and virally suppressed at 12 months (95% CI: 35.9, 100.0). Viral load monitoring might improve patient outcomes, but most patients with elevated viral loads do not receive monitoring within recommended timelines.
Health and Safety in Nail Salons: A Cross-Sectional Survey
Authors: Sanaat Sadaf , Holness D Linn , Arrandale Victoria H 
Published: July 2020

AbstractObjectivesIn recent years, nail salons have become more abundant than ever. The majority are small businesses, often employing immigrant women. Nail technicians have many exposures at work including chemical, biological, physical, and ergonomic hazards but few data exist on their symptoms or occupational health and safety practices, particularly in the Canadian context. The aim of this study was to learn about nail technicians, their work, and their health and safety practices.MethodsNail technicians were recruited from nail salons in Toronto, Ontario. Participants completed an anonymous survey with questions about demographics, work tasks, workplace health and safety practices, and symptoms (skin, respiratory, and musculoskeletal).ResultsA total of 155 nail technicians (95% female) participated in the survey. The majority of nail technicians performed manicures (99%) and pedicures (96%) and applied shellac polishes (86%). Only a third (34%) applied acrylic artificial nails. The reported use of personal protective equipment (PPE) was very high; 88% reported using a mask at work and 96% reporting using gloves. The most common symptoms reported by technicians were neck (44%) and back pain (38%). Skin and respiratory symptoms were less common with 6% of technicians reporting cough, 8% wheeze, and 5% a current rash. Technicians working over 30 h per week reported more neck pain (52 vs. 32%, P = 0.02). Technicians who reported using shellac polishes were more likely to report a runny nose (25 vs. 0%, P = 0.01).ConclusionsNail technicians in Toronto, Canada are experiencing work-related symptoms. Musculoskeletal symptoms were the most common symptoms reported. Much of the focus on nail salons and health has been on chemical exposures, but ergonomic hazards should not be overlooked. Efforts to increase knowledge and improve occupational health in nail salons should include information on multiple possible workplace hazards and how to reduce impacts of exposure.
Security Analysis of the First Certificateless Proxy Signature Scheme Against Malicious-But-Passive KGC Attacks
Authors: Lin Xi-Jun , Wang Qihui , Sun Lin , Yan Zhen , Liu Peishun 
Published: July 2020

AbstractRecently, Yang et al. proposed the first certificateless proxy signature scheme against malicious-but-passive key generation center (MKGC) attacks. They proved that their scheme can resist the MKGC attacks in the standard model. In this paper, we point out that their scheme cannot achieve this security because the adversary can forge valid signatures.
DNA methylation reprogramming in medaka fish, a promising animal model for environmental epigenetics research
Authors: Wang Xuegeng , Bhandari Ramji K 
Published: July 2020

Abstract
DNA methylation is a major epigenetic modification that undergoes dramatic changes in two epigenetic reprogramming windows during development: first in preimplantation embryos and second in primordial germ cell (PGC) specification. In both windows, DNA methylation patterns are reprogrammed genome-wide, and the majority of inherited methylation marks are erased, generating cells with broad developmental potential. Recent studies reported that the reprogramming of genome methylation in medaka is similar to human and mouse, suggesting that medaka may serve as a suitable biomedical model for comparative studies focused on the epigenetic and transgenerational inheritance of phenotypic traits. In this mini review, we will discuss how somatic and germ cells in post-fertilization stage embryos are epigenetically reprogrammed in mammals and fishes with a particular focus on DNA methylation dynamics.
Comprehensive genome analysis and comparisons of the swine pathogen, Chlamydia suis reveals unique ORFs and candidate host-specificity factors
Authors: Dimond Zoe E , Hefty P Scott 
Published: July 2020

ABSTRACT
Chlamydia suis, a ubiquitous swine pathogen, has the potential for zoonotic transmission to humans and often encodes for resistance to the primary treatment antibiotic, tetracycline. Because of this emerging threat, comparative genomics for swine isolate R19 with inter- and intra-species genomes was performed. A 1.094 Mb genome was determined through de novo assembly of Illumina high throughput sequencing reads. Annotation and subsystem analyses were conducted, revealing 986 putative genes (Chls_###) that are predominantly orthologs to other known Chlamydia genes. Subsequent comparative genomics revealed a high level of genomic synteny and overall sequence identity with other Chlamydia while 92 unique C. suis open reading frames were annotated. Direct comparison of Chlamydia-specific gene families that included the plasticity zone, inclusion membrane proteins, polymorphic membrane proteins and the major outer membrane protein, demonstrated high gene content identity with C. trachomatis and C. muridarum. These comparisons also identified diverse components that potentially could contribute to host-specificity. This study constitutes the first genome-wide comparative analysis for C. suis, generating a fully annotated reference genome. These studies will enable focused efforts on factors that provide key species specificity and adaptation to cognate hosts that are attributed to chlamydial infections, including humans.
Transcriptome-based drug repositioning for coronavirus disease 2019 (COVID-19)
Authors: Jia Zhilong , Song Xinyu , Shi Jinlong , Wang Weidong , He Kunlun 
Published: July 2020

ABSTRACT
The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) around the world has led to a pandemic with high morbidity and mortality. However, there are no effective drugs to prevent and treat the disease. Transcriptome-based drug repositioning, identifying new indications for old drugs, is a powerful tool for drug development. Using bronchoalveolar lavage fluid transcriptome data of COVID-19 patients, we found that the endocytosis and lysosome pathways are highly involved in the disease and that the regulation of genes involved in neutrophil degranulation was disrupted, suggesting an intense battle between SARS-CoV-2 and humans. Furthermore, we implemented a coexpression drug repositioning analysis, cogena, and identified two antiviral drugs (saquinavir and ribavirin) and several other candidate drugs (such as dinoprost, dipivefrine, dexamethasone and (-)-isoprenaline). Notably, the two antiviral drugs have also previously been identified using molecular docking methods, and ribavirin is a recommended drug in the diagnosis and treatment protocol for COVID pneumonia (trial version 5–7) published by the National Health Commission of the P.R. of China. Our study demonstrates the value of the cogena-based drug repositioning method for emerging infectious diseases, improves our understanding of SARS-CoV-2-induced disease, and provides potential drugs for the prevention and treatment of COVID-19 pneumonia.
Complete Genome of Roseobacter ponti DSM 106830T
Authors: Hollensteiner Jacqueline , Schneider Dominik , Poehlein Anja , Daniel Rolf 
Published: July 2020

Abstract
Members of the Roseobacter group are known for their different ecologically relevant metabolic traits and high abundance in many marine environments. This includes traits like carbon monoxide oxidation, sulfur oxidation, nitrogen oxidation, DMSP demethylation, denitrification, and production of bioactive compounds. Nevertheless, their role in the marine biogeochemical cycles remains to be elucidated. Roseobacter ponti DSM 106830T, also designated strain MM-7T (=KCTC 52469T =NBRC 112431T), is a novel type strain of the Roseobacter group, which was proposed as new Roseobacter species. It was isolated from seawater of the Yellow Sea in South Korea. We report the complete genome sequence of R. ponti DSM 106830T, which belongs to the family Rhodobacteraceae. The genome of R. ponti DSM 106830T comprises a single circular chromosome (3,861,689 bp) with a GC content of 60.52% and an additional circular plasmid (p1) of 100,942 bp with a GC content of 61.51%. The genome encodes 3,812 putative genes, including 3 rRNA, 42 tRNA, 1 tmRNA, and 3 ncRNA. The genome information was used to perform a phylogenetic analysis, which confirmed that the strain represents a new species. Moreover, the genome sequence enabled the investigation of the metabolic capabilities and versatility of R. ponti DSM 106830T. Finally, it provided insight into the high niche adaptation potential of Roseobacter group members.