bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of plastic concrete cut-off wall in reinforcement of reservoir
Authors: Wang L , Huang Y , Li Z , Zhang J 
Published: July 2020

Abstract
Plastic concrete is a kind of suitable material for cut-off wall of earth dam, which has low elastic modulus and permeability, large ultimate deformation, and good workability. In this paper, the mix proportion of plastic concrete with 50% bentonite content, water-binder ratio of 1.00 and sand-aggregate ratio of 55% is proposed, and the plastic concrete cut-off wall has been successfully applied to the reinforcement project of Huizhou Zengbo Lianhe reservoir. All the indexes meet the design requirements. The seepage of the main dam was reduced by 67%, and the piezometric level behind the wall was reduced by 6-9 m.
Research on tunnel ground settlement characteristics by shield method and pipe-jacking method based on numerical simulation
Authors: Lin Tingyu , Gong Jianwu 
Published: July 2020

Abstract
Based on a shield tunnel, the ground settlement by shield method and pipe-jacking method in straight tunnel and curve tunnel was studied. The ground settlement curves by the two methods were analyzed by numerical simulation. Compared with straight tunnel, the ground settlement trough in curve tunnel is shifted to the bending direction by about 0.5D. The overall ground settlement difference between shield and pipe-jacking method is relatively small in straight tunnel, and the settlement in curve tunnel by pipe-jacking method is more than that by shield method. With the excavation of the tunnel, the ground settlement trend in curve tunnel is more obvious than that in straight tunnel. And the settlement difference is relatively large in the middle of the tunnel for both straight tunnel and curve tunnel.
Research on In-depth Treatment Efficacy of Reclaimed Water with Heterogeneous Catalytic Ozonation
Authors: Subo Li , Yongze Liu , Liqiu Zhang , Feng L 
Published: July 2020

Abstract
The secondary biological effluent of a sewage treatment plant in Beijing City is treated deeply with heterogeneous catalytic ozonation and the efficacy is evaluated. The results indicate that the organic degradation efficacy in the effluent after heterogeneous catalytic ozonation increases along with the ozone dosage, but the ozone utilization ratio decreases along with the ozone dosage. Through the research of residual ozone concentration in the reactor friction, the catalyzer is added in the section between 30cm and 80cm far from the aeration device, and it can effectively promote ozone utilization ratio while further strengthening organic degradation efficacy. The results indicate that when the ozone dosage is 15mg/L, SCOD, UV254 and DOC in the effluent may be decreased to 6.74 mg/L, 0.0361 cm-1 and 5.85 mg/L respectively through catalytic ozonation of heterogeneous catalyzer A (aluminum silicon alloy). Meanwhile, the ozone utilization ratio is increased from 84.76% (when only ozone is oxidized) to 94.2%. Three-dimensional fluorescence analysis results indicate that macromolecules such as protein and humus in the effluent may be well removed. The reclaimed water after in-depth treatment reaches higher water quality standard, the applicable scenarios are greatly increased, and the water quality problem of reclaimed water can be effectively solved during reuse.
Fatigue Stress Analysis of Key Nodes in Cable-girder Anchorage Zone of Long-span Cable-stayed Bridge
Authors: Li Dai , Xianglin Jiang 
Published: July 2020

Abstract
Under the long-term effect of traffic load, the cable-girder anchorage zone of the cable-stayed bridge will be continuously subjected to fatigue stress, so the real-time stress state of this part is one of the important factors affecting the safe operation of the long-span cable-stayed bridge. In the present paper, finite element software was used to analyze the stress state of the key nodes of a typical steel anchor box of a long-span cable-stayed bridge, and based on the European, American and Chinese standards, the fatigue strength of the key nodes was evaluated according to the stress results. The evaluation results show that the fatigue strength of the cable-girder anchorage zone can meet the requirements of various codes and can continue to operate safely.
Construction risk assessment of green transformation of old industrial plants based on improved FMEA
Authors: Qian Wu , Min Sun , Na Li , Mengqi Sun , Jing Geng 
Published: July 2020

Abstract
In view of the problem that the construction process of the green transformation of the old industrial plants is easily affected by its own structure, transformation scheme, building technology and many other uncertain factors, a risk assessment model based on improved FMEA is proposed by combining fuzzy theory and D-S evidence theory. Through the data analysis of the primary indicators, 25 risk factors are screened from five aspects. On the basis of FMEA risk fuzzy evaluation matrix, Murphy’s method is introduced to correct the classical D-S evidence theory gives experts reasonable weight. The risk level is ranked according to the RPN, and the key risks factors in the construction of green transformation project of old industrial plants are determined. Finally, the model is verified by an engineering example, and the evaluation result is consistent with the actual situation.
Application of AMT in the Investigation of New Loushanguan Tunnel of Chongqing Guizhou Railway
Authors: Zhao Hu , Wang Linghui 
Published: July 2020

Abstract
New Loushanguan tunnel of Chongqing Guizhou railway is located in the karst and fault zone development section with strong water yield and complex engineering geological conditions. Through audio-frequency magnetotelluric(AMT) exploration, through data processing and two-dimensional inversion, the apparent resistivity profile of the tunnel is obtained. Combined with engineering geological data, the resistivity characteristics are analyzed, and the macroscopic lithology characteristics, karst development degree and fault fracture zone of the tunnel are explored the information of location and influence area provides geophysical basis for tunnel design and plays a guiding role in comprehensive geological investigation of deep tunnel.
Nanoporous Carbon from Durian Peel via Hydrothermal-Carbonization and their Application in Ripening Delay of Durian
Authors: Sitthisantikul Thanat , Poolsili Pee , Devakula Jindabha , Jaruwanawat Anuchit , Eiad-Ua Apiluck 
Published: July 2020

Abstract
This research was aimed to examine conditions on synthesis of nanoporous carbon materials from durian peel via the process of hydrothermal carbonization (HTC) as an application for delaying durian ripening process. The experiment was conducted by using durian peel as materials for producing nanoporous carbon via the process of hydrothermal at 160-200 °C for 8-24 hours. It also included the process of carbonization at 500-900 °C for 2 hours under nitrogen atmosphere for developing pore structure and removing contaminants to obtain the nanoporous carbon. The properties of nanoporous carbon were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and Raman spectrometer analysis. The results indicated that the process of hydrothermal at 200 °C for 12 hours and carbonization at 900 °C for 2 hours was suitable for delaying ripe durian. This is become of the carbon content, porous structure and amorphous structure increased with HTC temperature.
Synthesis and Surface Characterization of a Novel Plasma-polymerized (α-Pinene)-based Thin Film
Authors: Alvarez Karl Vincent , Eusebio Bryle , Reyes Jonard Jairo , Pechardo Jason 
Published: July 2020

Abstract
α-Pinene is a bicyclic compound that is commonly sequestered from coniferous plants like pine trees. Several properties of pinene have been investigated, such as its isomerization capabilities and biological activity. However, the viability of pure pinene as an organic thin film has not yet been explored. In this work, we report the synthesis of an α-pinene-based organic thin film deposited on Al and glass substrates via plasma polymerization and its subsequent surface characterization. It was determined that the film generally became more hydrophobic as the α-pinene loading and the deposition time increased. More importantly, it was shown that specifying a pinene-Ar ratio of 50:50 yielded the highest contact angles at 94.22° and 110.38° for deposition times of 6.0 and 9.0 minutes, respectively. These results signify that a pinene-based organic thin film has been produced through the plasma polymerization synthesis route.
Thermal Performance of a Cross-flow Rotating Spray Bed
Authors: Sharma Moumita , Goswami Nilutpal , Bhowal Avijit 
Published: July 2020

Abstract
This work examined the thermal performance of evaporative cooling of water by an air stream in an equipment wherein the liquid phase is sprayed between two coaxial disks. The contact between the two phases was in a cross-current mode. The performance of the spray bed in terms of thermal efficiency and evaporation rate of liquid were calculated by varying operational parameters like air flow rate, water flow rate, and rotational speed. Both the thermal efficiency (minimum = 0.183, maximum = 0.34) and evaporation rate (minimum = 0.009 kg/min, maximum = 0.032 kg/min) increased with rotational speed and air flow rate. However, the thermal efficiency decreased with liquid flow rate.
Effects of Texture on the High Temperature Scratch Wear Behavior in Zinc
Authors: Gokhale Aditya , Huang E-Wen , Lee Soo Yeol , Prasad Rajesh , Jain Jayant 
Published: July 2020

Abstract
In this study the effect of texture on the wear behavior was investigated in extruded rod of pure zinc. Different loads and temperatures were used to investigate the effect of texture on wear behavior. Formation of chips at higher temperature marked the transition of wear mechanism from micro-ploughing to micro-cutting. Suppression of twinning at high temperature was also observed suggesting a complete slip dominated deformation at high temperature. The effect of texture was evident at high temperature and high loads.
Experimental Study on Performance of Anode Humidification System of Large Power Fuel Cell Stack
Authors: Xingsheng Lao , Yong Liu , Chunhui Dai , Jun Wu , Zhenxing Zhao 
Published: July 2020

Abstract
The heat and mass transfer characteristics of the hydrogen membrane humidification system of a 70kW atmospheric pressure proton exchange membrane fuel cell stack were experimentally studied. The shell-and-tube membrane humidifier is applied to the high-power fuel cell stack hydrogen humidification system, which has the advantages of fast humidification rate and good wettability of humidified hydrogen. The liquid hydrogen is humidified by liquid water. After the humidification in the experiment, the hydrogen can always reach the supersaturation state. When the hydrogen flow rate is constant, the temperature difference between the membrane humidifier humidification water inlet and outlet decreases with the increase of the water flow rate, and the hydrogen outlet The temperature approaches the humidification water inlet temperature as the liquid water flow rate increases; increasing the humidification water flow rate can reduce the temperature difference before and after the humidification water passes through the membrane humidifier. When the temperature and flow rate of the humidified water are constant, the fuel cell stack load increases, and the relative humidity of the humidified hydrogen outlet does not change significantly.
Research and development of a trajectory-position controller for an underwater glider
Authors: Gurenko Boris , Surov Kiril , Nazarkin Anatoly 
Published: July 2020

Abstract
In this article, development of glider control system for movement in a three-dimensional based on position-trajectory control laws is considered. To ensure control, a model of spatial motion of the glider is used, taking into account the component of the variable buoyancy. As a result of the simulation, the trajectories of the glider were obtained at points set in the horizontal plane, considering the parameters of the trajectory for movement in the vertical plane. The results obtained make it possible to evaluate the adequacy of the developed control system. The deviation of the system when the glider reaches the set point is minimal, and using the trajectory parameters in the vertical plane, it is possible to control the depth of immersion and speed. The presented results of the simulation of coating elements prove the possibility of practical use of the control system when planning glider-type AUV missions.
Multi-objective Tourist Trip Design Problem in Chiang Mai City
Authors: Wisittipanich Warisa , Boonya Chanagan 
Published: July 2020

Abstract
This study aims to solve a multi-objective tourist trip design problem (MO-TTDP) in order to simultaneously maximize tourist satisfaction and minimize total traveling cost. The goal is to identify optimal routing for tourist under time window and time horizon constraints. The mathematical model is first presented to find optimal routing under limited budget. However, the exact algorithm cannot find solution with multiple objectives simultaneously. Therefore, this study applies a metaheuristic, called Global Local and Near-Neighbour Particle Swarm Optimization (GLNPSO), to solve the MO-TTDP. Several local search strategies are also proposed to enhance the solution quality. The proposed algorithm is implemented on the real-case study in Chiang Mai City, Thailand. The experimental results show that the proposed algorithm yields a set of diverse and high quality non-dominated solutions.
Weak measurement of the optical polarization, chirality and orbital angular momentum via metasurface with polarization filtering
Authors: Li Guang , Shi Peng 
Published: July 2020

Abstract
We propose a metasurface to evaluate the polarization, chirality and orbital angular momentum of the incident light. By employing the weak measurement mechanism, an aperture with a set orientation is utilized to filter the incident polarization components and enhance the polarization contrast. We demonstrate theoretically and numerically that the mechanism can detect the weak quantities of the incident field by evaluating the orientation angle of the azimuthal polarized component in the back focal plane or imaging plane. Using the aperture as the cell of metasurface, the enhancement can also be realized in the imaging plane. Moreover, by constructing a phase gradient through a couple of mirror symmetric apertures in the cell, the metasurface can produce orbit induced rotation in the imaging plane. Our results could find wide application in the polarization, chirality detection and orbital angular momentum communications.
Spectroscopic correlation of chalcogen defects in atomically thin MoS2(1−x)Se2x
alloys
Authors: Sharma Rahul , Pandey Juhi , Sahoo Krishna Rani , Rana Kewal Singh , Biroju Ravi K , Theis Wolfgang , Soni Ajay , Narayanan Tharangattu N 
Published: July 2020

Abstract
Engineering of atomically thin transition metal dichalcogenides (TMDs) is highly sought after for novel optoelectronic and spintronic devices. With the limited number of naturally existing TMDs, chalcogen based alloying has become a viable solution for developing TMDs for optical modulators and photovoltaics. Here, we report on detailed optical and microscopic studies of ternary TMD alloys of molybdenum, sulfur, and selenium grown via a single step method. The developed material has tunable band gaps in a broad range 1.5–1.9 eV with the variation in sulfur compositions. Further, the existence of trions, bi-excitons, and defect bound excitons are shown using temperature dependent (4 K−300 K) photoluminescence spectroscopy. A detailed analysis on MoS1.34Se0.66 alloy system shows the evidence of new types of defect bound excitons originating at low temperatures along with the presence of bi-excitons having a binding energy of ∼41 meV. The prospects of defect induced quasiparticles are observed in scanning transmission electron microscope assisted analyses and verified using density functional theory calculations. The thermal conductivity values, calculated using micro-Raman studies, of MoS2, MoSe2, and MoS1.34Se0.66 are found to be 69(±2) W m−1 K−1, 33(±2) W m−1 K−1 and 17(±2) W m−1 K−1 respectively, in agreement with the theoretical predictions. Tunable optical properties of these ternary atomic layers along with moderate thermal conductivity reveal the potential of these layers in modern opto-electronic devices and sensors.
MXene for high energy and power density: a perspective
Authors: Wang Chengxiang , Wang Xianfen , Zhang Luyuan , Yin Longwei 
Published: July 2020

Abstract
MXenes as a family of unique 2D materials with high conductivity, atomic thickness, redoxable property and plenty of surface groups have been extensively explored for energy storage. Energy and power densities are always increasing along with the development of controllable synthesis, surface chemical groups and microstructure regulations. Herein, we reviewed present progresses in MXene-based materials for high performance energy storage. Specific discussion was focused on novel structure design, surface group regulation and multivalent ion battery applications. Finally, based on the aforementioned results and discussions, personal perspectives on the MXenes for high energy and power are presented.
COVID-19 Testing
Authors: Brooks Zoe C , Das Saswati 
Published: July 2020

Abstract

Objectives
To illustrate how patient risk and clinical costs are driven by false-positive and false-negative results.

Methods
Molecular, antigen, and antibody testing are the mainstay to identify infected patients and fight the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To evaluate the test methods, sensitivity (percent positive agreement [PPA]) and specificity (percent negative agreement [PNA]) are the most common metrics utilized, followed by the positive and negative predictive value—the probability that a positive or negative test result represents a true positive or negative patient. The number, probability, and cost of false results are driven by combinations of prevalence, PPA, and PNA of the individual test selected by the laboratory.

Results
Molecular and antigen tests that detect the presence of the virus are relevant in the acute phase only. Serologic assays detect antibodies to SARS-CoV-2 in the recovering and recovered phase. Each testing methodology has its advantages and disadvantages.

Conclusions
We demonstrate the value of reporting probability of false-positive results, probability of false-negative results, and costs to patients and health care. These risk metrics can be calculated from the risk drivers of PPA and PNA combined with estimates of prevalence, cost, and Reff number (people infected by 1 positive SARS-CoV-2 carrier).
Procalcitonin Correlates With but Is Not Superior to Other Diagnostic Markers of Bacterial Pneumonia
Authors: Ayala-Lopez Nadia , Peaper David R , Harb Roa 
Published: July 2020

Abstract

Objectives
Despite extensive research on procalcitonin (PCT)-guided therapy in lower respiratory tract infections, the association between PCT and bacterial pneumonia remains unclear.

Methods
We evaluated retrospectively the performance of PCT in patients presenting with lower respiratory tract infection symptoms and grouped by seven diagnoses. All patients had microbial testing, chest imaging, and CBC counts within 1 day of PCT testing.

Results
Median PCT level in patients diagnosed with bacterial pneumonia was significantly higher than in patients diagnosed with other sources of infections or those not diagnosed with infections. Median PCT levels were not different among patients grouped by type or quantity of pathogen detected. They were significantly higher in patients with higher pathogenicity scores for isolated bacteria, those with abnormal WBC count, and those with chest imaging consistent with bacterial pneumonia. A diagnostic workup that included imaging, WBC count, and Gram stain had an area under the receiver operating characteristic curve of 0.748, and the addition of PCT increased it to 0.778.

Conclusions
PCT was higher in patients diagnosed with bacterial pneumonia. Less clear is its diagnostic ability to detect bacterial pneumonia over and above imaging and laboratory data routinely available to clinicians.
Clinicopathologic Characterization of Hypocellular Acute Myeloid Leukemia (AML) Showed Fewer Genetic Abnormalities Involving Cell Proliferation and NPM1 When Compared With Nonhypocellular AML
Authors: Carlsen Eric , Bailey Nathanael G , Aggarwal Nidhi , Illar Gwendolyn M , Wild Matthew , Yatsenko Svetlana A , Rea Bryan , Liu Yen-Chun 
Published: July 2020

Abstract

Objectives
Hypocellular acute myeloid leukemia (AML) is uncommon. Despite the prognostic and therapeutic importance of mutational analysis, the mutational landscape of hypocellular AML is not well understood.

Methods
We identified 25 patients with hypocellular AML, and 141 patients with nonhypocellular AML were identified as a control group. We applied next-generation sequencing for the first time to profile this entity.

Results
The hypocellular AML patients were older than those with nonhypocellular AML (P = .037). At diagnosis, hypocellular AML had lower leukocyte counts (P = .012), higher hemoglobin (P = .003), and lower blast counts in the peripheral blood (P &lt; .001) and bone marrow (P = .003). Hypocellular AML was less likely to have mutations involving cell proliferation (P = .027) and NPM1 (P = .022) compared with nonhypocellular AML. Hypocellular AML showed a high incidence of spliceosomal mutations and myelodysplastic syndrome-defining chromosome abnormalities (65%), but the incidence was not significantly different from that in nonhypocellular AML. There was no significant survival difference between hypocellular and nonhypocellular AML.

Conclusions
To our knowledge, this study is the first to demonstrate hypocellular AML showed fewer genetic alterations involving cell proliferation and NPM1 when compared directly with nonhypocellular AML; this finding likely contributes to the low marrow cellularity in at least a portion of the patients with hypocellular AML.
Forty Postmortem Examinations in COVID-19 Patients
Authors: De Michele Simona , Sun Yu , Yilmaz Mine M , Katsyv Igor , Salvatore Mary , Dzierba Amy L , Marboe Charles C , Brodie Daniel , Patel Nina M , Garcia Christine K , Saqi Anjali 
Published: July 2020

AbstractObjectivesAlthough diffuse alveolar damage, a subtype of acute lung injury (ALI), is the most common microscopic pattern in coronavirus disease 2019 (COVID-19), other pathologic patterns have been described. The aim of the study was to review autopsies from COVID-19 decedents to evaluate the spectrum of pathology and correlate the results with clinical, laboratory, and radiologic findings.MethodsA comprehensive and quantitative review from 40 postmortem examinations was performed. The microscopic patterns were categorized as follows: “major” when present in more than 50% of cases and “novel” if rarely or not previously described and unexpected clinically.ResultsThree major pulmonary patterns were identified: ALI in 29 (73%) of 40, intravascular fibrin or platelet-rich aggregates (IFPAs) in 36 (90%) of 40, and vascular congestion and hemangiomatosis-like change (VCHL) in 20 (50%) of 40. The absence of ALI (non-ALI) was novel and seen in 11 (27%) of 40. Compared with ALI decedents, those with non-ALI had a shorter hospitalization course (P = .02), chest radiographs with no or minimal consolidation (P = .01), and no pathologically confirmed cause of death (9/11). All non-ALI had VCHL and IFPAs, and clinically most had cardiac arrest.ConclusionsTwo distinct pulmonary phenotypic patterns—ALI and non-ALI—were noted. Non-ALI represents a rarely described phenotype. The cause of death in non-ALI is most likely COVID-19 related but requires additional corroboration.