bluuebunny/crossref_metadata_2025_split huggingface dataset:
Catastrophic landslide stabilization on a restricted area through a combined solution in Bran, Brasov County
Authors: Măntulescu M , Tuns I 
Published: June 2020

Abstract
The paper presents a combined method for the rehabilitation of a road on a restricted area by reinforced soil above a double sheet of piles. The principle is illustrated by a case study of a landslide in Bran, Brasov county. Due to the restriction imposed by the limit of properties we have to find out the way to stabilize a small part of the landslide and in the mean time to let the efforts induced by the rest of the sliding mass to act. To determine the status of efforts the problem on a restrained area without stabilizing the rest of the landslide which is much bigger we have considered that there are lateral surcharges due to the movement of the sliding mass.
Thermal analysis of a structure made by using cold formed steel sections
Authors: Maxineasa S G , Isopescu D N , Baciu I R , Lupu M L , Dragan T C 
Published: June 2020

Abstract
In the last decades, man-made environmental burdens have led to a significant increase of negative effects felt by the human race. Thus, some industrial sectors have developed and implemented a series of solutions with the goal of minimising their negative ecological impact. Taking into account that the construction sector is one of the most important economic players in every national economy, one that has a tremendous negative impact over the environment, in the last years, various recommendations and limitations have been drawn in order to reduce the consumption of non-renewable energy. In order to constantly reduce the impact of the built environment over the natural one, civil engineers should develop and promote sustainable solutions that have a direct effect on improving the environmental performances of the built environment. One such solution is the use of cold formed steel sections (CFS) for building new structures. This paper analyses the linear thermal transmittance of the thermal bridge formed by the vertical steel studs inside the external walls. The results show that these steel elements can be used in order to build energy efficient buildings.
Seismic Analysis of Steel Structures Using Friction Dampers
Authors: Oance I S , Gelmambet S 
Published: June 2020

Abstract
In modern seismic design, damping devices are used to increase the capacity of structures to dissipate energy. This paper evaluates the efficiency of using a passive friction damper system in a structure compared with typical structures and the influence of the damper’s capacity on the structural response. The analysis concludes that dampers with lower capacity slip more times during earthquake than dampers with bigger capacity but the acceleration result increases.
The choice of aversion of the project proposal on restoration of the cultural heritage property on the basis of multicriteria comparative analysis
Authors: Pakhomova E G , Jezersky V A , Monastyrev P V , Kuznetsova N V 
Published: June 2020

Abstract
With time a problem of preserving architectural heritage sites becomes more acute, since many unique listed buildings are in an emergency state and require the restoration measures that take into account the specifics of the historical environment, an analysis of the technical condition, evaluation of the monuments’ value, the possibility of their functional adaptation to modern needs. The search for solution to preserve such objects is often complicated by the development of a modern urban renovation area around them and by the difficulties of maintaining a complete historical appearance of cities when adapting listed buildings to the functions demanded in modern society. The article proposes an approach to choose the best version of the project proposal for the restoration of a cultural heritage property of regional significance. The building is designed in an eclectic style in the city of Tambov. 11 versions of the author’s project proposals for the restoration transformations are considered, which preserve the historical appearance of the building and various transformations of the internal volume and development options of the adjacent territory. 14 criteria are proposed to evaluate the qualities of versions. To select the best restoration version a scientific method of a multicriteria comparative analysis was used, which made it easy to compact a large amount of information about the object to a single quality parameter in the form of a synthetic indicator for each version. Simultaneously the weight factors of the criteria were established on the basis of expert evaluation obtained from the professional groups of various profiles: architects, representatives of the contractor, state supervisory authorities, the owner of the object, the tenant of the object.
The dynamics of changes in the physical and mechanical characteristics of the base soil
Authors: Pakhomova E G , Dubrakova K O 
Published: June 2020

Abstract
This article discusses the change in the physical and mechanical characteristics of the foundation soil during the operation of construction projects and the possibility of taking these changes into account when designing shallow foundations. Methods Based on the assumption that the weight of the engineering and geological elements of the base remains constant regardless of the level of existing additional vertical stresses, an expression is obtained for determining the coefficient k
γ, taking into account changes in the density and specific gravity of the soil during the operation of buildings and structures. Moreover, based on the assumption that the plot of the additional vertical stresses is triangular, an equation for calculating the coefficient k

c
is determined, which allows determining the change in soil adhesion during the operation of construction projects. Using the coefficients k

γ
and k

c
, an expression is obtained to determine the change in the calculated resistance of the soil of the base during the operation of construction projects. Taking into account the coefficient k

γ
with the width of the projected foundation more than two meters with a ratio of settlement of the base to the depth of the compressible thickness equal to 0.3 leads to an increase in the design resistance of the operated base by 5%; by 3% and 1% with S/H

c
= 0.2 and with S/H

c
=0.1, respectively. In this case, depending on the width of the designed foundation, taking into account the coefficient k

c
allows you to exceed R by 25%. Joint accounting of the considered coefficients leads to an increase in the calculated resistance of the soil of the base by an average of 27%. Conclusion The obtained coefficients, taking into account changes in the specific gravity and soil adhesion during the operation of the base, make it easy to estimate the growth of the design resistance during the compression process, which in turn makes it possible to save an average of 10% of the material when designing shallow foundations.
Numerical simulation on heat transfer characteristics of gas pipeline in urban utility tunnel
Authors: Wang G Q , Wang H M , Cai Yan , Feng G H , Kang Z Q 
Published: June 2020

Abstract
Recent years, more and more utility tunnels are adopted in China with the development of urbanization. Compared to the conventional method for utility installation, the utility tunnel that co-locates more than one utility underground eliminates the need for frequent excavation and reinstatement of roads. Ventilation systems are essential in utility tunnel for safety reasons, especially for gas compartments. This paper aims to evaluate effect of the longitudinal ventilation on gas temperature field by investigating the heat transfer process on gas pipeline. Numerical models including convection, conduction and radiation were established and then used to simulate the heat transfer process on gas pipeline. Results show that the ventilation has a great impact on gas temperature. In case of low inlet air temperature, the gas temperature may drop below -10 °C, which is too low to guarantee a normal operation.
Preparation of catalyst CuO/CeO2 in multiphase Fenton technology
Authors: Wu N N , He Y , Tan Y C , Zhang L C , Huang N , Fang W T 
Published: June 2020

Abstract
The performance of the catalyst in the multiphase Fenton system is particularly important. It will directly affect the rate of hydroxyl radical generation during the multiphase Fenton reaction which is the main material for oxidative degradation of organic matter in wastewater. Therefore, it is necessary to select a suitable catalyst to construct a multiphase Fenton system. In this study, the preparation of CuO/CeO2 catalyst in multiphase Fenton technology was discussed. The effects of CuO loading, calcination time and calcination temperature on CuO/CeO2 were investigated. The best preparation conditions for the catalytic performance of the catalyst were as follows: the loading of CuO was 7%, the calcination time was 3h and the calcination temperature was 400°C. The catalyst prepared under this condition can achieve a CODCr removal rate of 34% for a plurality of Fenton processes.
Static test study on precast concrete frame beams with large-diameter and high-strength steel bars
Authors: Zhang Y , Shi B , Jin L , Liu M 
Published: June 2020

Abstract
The paper is focused on the mechanical properties of precast concrete frame beams with large-diameter and high-strength steel bars. The full-scale static tests and nonlinear finite element analysis were carried out on the two proposed beams with steel bars of HRB500 Ø32-Ø25 and Ø40-Ø32 to study the load-carrying capacity, flexural capacity and plastic rotational capacity. The influence of steel bar diameter on mechanical properties were explored. On the basis of equal-strength principle of flexural capacity at the same time, the finite element model of the cast-in-place concrete frame beam with large-diameter of HRB500 and ordinary steel bars of HRB400 were compared. Results indicated the properties of the precast concrete frame beams with large-diameter and high-strength steel bar. The load-carrying capacity of the prefabricated concrete beam with steel bars of Ø40-Ø32 was higher. The coefficient of plastic rotational capacity was 3.41 and 2.88 of specimens with steel bars of HRB500 Ø32-Ø25 and Ø40-Ø32, respectively. The positive section yield bending moment could be calculated by the current concrete codes. The properties such as yield load, flexural bearing capacity and the plastic rotational capacity were similar to the cast-in-place concrete frame beam, and could be verified by the current standard.
Research status and development trend of concrete spiral distributor
Authors: Zou D F , Yu W D , Fan L T , Li D , Zhang S Y , Wang L 
Published: June 2020

Abstract
Concrete distributor is one of the key equipment for the industrial production of concrete product parts. Its performance directly affects the product quality and production efficiency of precast concrete components, which in turn affects the level of architecture industrialization of China. At present, the domestic concrete distributor has a low degree of automation and a simple mechanical structure. There is too much manual intervention in the production. It is impossible to achieve a real automatic distribution. Also, BIM data cannot be shared with the control system, resulting in low production efficiency. This paper summarized these problems which are in the context of big data, internet of things and intelligence, and proposed the upgrade ideas for precast concrete components production equipment. In order to break through the bottleneck that restricts the stability, refinement and intelligent development of precast concrete components distribution. The research and exploration in BIM data analysis mechanical structure optimization and control system upgrade were conducted. Then the overall development of mechanical equipment that meets construction standards of China will be promoted.
Intelligent Design Based on Knowledge Capture and Reuse
Authors: Qin Hao , Jin Jiong , Zhang Yu , Hu Shilin 
Published: June 2020

Abstract
Engineering design is a creative activity which is depending on both scientific knowledge and innovative ideas of human being. Intelligently recommend the scientific knowledge to the designers would certainly shorten the time they spent in finding the data, information and knowledge they need for design decision-making. Thus, they can spend more time in the innovative activity of design. The design of a flexible gear for harmonic drive reducer is a knowledge intense job, where intelligent design method is required to facilitate the design process and thus well applicable. This paper explores a systematic methodology of undertaking intelligent design of such a mechanical component, through on knowledge capture, representation and reuse. A case study on a double-arc flexible gear design is undertaken as the evaluation and improvement of this methodology, whose results have shown the good effectiveness of the methodology in shortening the time for modelling, information retrieval and decision-making.
Kinematics Test and Evaluation of Tool Axis Direction Error for Five-axis Machine Tools
Authors: Zhong L , Ren F , Guo L , Bi Q , Wang Y 
Published: June 2020

Abstract
This paper presents a kinematics detection and evaluation method for tool axis direction error of five-axis machine tools. By measuring the trajectory errors of two tool center positions corresponding to two different tool lengths, the tool axis direction error can be obtained by combining the two measurements. Compared with the evaluation method in ISO10791.6.2014 which can only evaluate the tool center position errors corresponding to a single tool length, the proposed method can infer the processing accuracy corresponding to different tool lengths and to evaluate the comprehensive accuracy of five-axis flank milling. The proposed method is verified through simulations and experiments on a five-axis gantry machine tool.
Flow Analysis of Two-Phase Flow in Curved Pipe of Polar Cruise Seawater Pipeline
Authors: Liu Zongqiang , Xu Li , Liu Guanchen , Tao Cheng 
Published: June 2020

Abstract
In order to study the flow characteristics of seawater-ice crystals two-phase flow in the polar cruise seawater pipeline system, the curved pipe in the pipeline system is taken as the research object. Through numerical simulation, the effects of different initial conditions on the flow of seawater-ice crystal two-phase flow in curved pipe are analyzed, and the flow analysis results are obtained. The results show that in the curved pipe, the fluid is separated at the bend, and the pressure loss at the corner of the curved pipe is the most serious; the increase of the flow rate and the IPF (ice packing factor) will cause the ice crystals to gather toward the center; when the fluid has a high IPF, the ice crystals can be converted into a symmetric distribution state by being concentrated on the inner wall surface of the pipe at a relatively low flow rate; in the range of 0.5 m/s-2 m/s, the increase in fluid velocity has a significant effect on the distribution of ice crystals, and when the fluid velocity exceeds 2 m/s, the increase in flow rate has no significant effect on the distribution of ice crystals.
Dynamic Analysis of Carrier Structure of a Marine Underwater Mechanical Arm
Authors: Miao Hu , Jianggui Han , Wenyong Guo 
Published: June 2020

Abstract
In this paper, the support structure of a certain type of marine underwater manipulator is taken as the object to carry out solid modeling and mechanical properties analysis. At sea level 5, the maximum stress and displacement of the carrier structure are obtained through static analysis, and the first six frequency modes, peak response frequency and amplitude of the carrier structure are obtained through modal analysis and harmonious response analysis. The results show that the safety can be guaranteed under 5-level sea conditions, and the influence of cyclic loads on the structure is significant. The influence of cyclic loads on the structure should be taken into account when analyzing the structure. The research results have engineering application value and guiding significance for optimum design and safety strength checking of underwater manipulator carrier structure.
Pose Calibration for 2D Laser Profiler Integrated in Five-Axis Machine Tools
Authors: Zhang S , Duan X , Zeng C , Shi K , Zhang X , Bi Q , Wang Y 
Published: June 2020

Abstract
Laser scanning is a fast and effective method to acquire the 3D surface profiles of part. To implement on-machine measurement (OMM), the 2D laser profiler could be integrated in five-axis machine tools and moves under the command of the computer numerical control (CNC) system. The 2D profile data and the corresponding machine coordinates are acquired and saved by the CNC system, and then converted to 3D point cloud using the kinematic model. Therefore, calibration of the position and orientation of the laser profiler with respect to the machine tool will directly influence the inspection accuracy. In this paper, a pose calibration method is proposed to identify the position and orientation of the laser sensor. A laser scanning system integrated in five-axis machine tool is developed. The position and orientation deviations between the local laser coordinate system (LCS) and tool coordinate system (TCS) are defined. Then, a designed calibration block is scanned, and its feature is reconstructed. Furthermore, the position and orientation of the laser profiler is identified by comparing the reconstructed features with the designed features. Finally, the position and orientation deviations parallel to five axes of the machine tool are compensated by coordinate offset, and the remaining orientation deviation is corrected by the kinematic model during converting measurement data to 3D point cloud. Experiment is carried out to validate the proposed method.
Giant Cell Carcinosarcoma of the Parotid Gland With a PLAG 1 Translocation in Association With a Pleomorphic Adenoma With HMGA2 Translocation
Authors: Katsakhyan Levon , LiVolsi Virginia A , Chalian Ara A , Zhang Paul J 
Published: June 2020

AbstractObjectivesCarcinosarcomas of the salivary gland are rare neoplasms and have been described arising de novo or in association with pleomorphic adenoma (PA). PLAG1 and HMGA2 translocations are known to occur in PAs and carcinomas ex PA but are mutually exclusive.MethodsWe report a case of a carcinosarcoma in the parotid gland of a 77-year-old man with unusual anaplastic sarcomatoid giant cell morphology.ResultsMicroscopically, a small separate PA was found adjacent to the carcinosarcoma. By conventional notion, the PA and carcinosarcoma would be considered related, as carcinosarcomas are well known to arise from PAs (carcinosarcoma ex PA). However, fluorescence in situ hybridization (FISH) assay demonstrated PLAG1 translocation in the carcinosarcoma and HMGA2 translocation in the separate PA.ConclusionsThese findings support that the carcinosarcoma likely originated from another PA with a PLAG1 translocation or de novo but not from the coexisting PA harboring a different translocation. To our knowledge, the case is the first to demonstrate PLAG1 translocation by FISH in a sarcomatous component of any parotid gland tumor, which may help better classify these tumors. In addition, multiple PAs are commonly found in the salivary gland, and to our knowledge, our case is the first to demonstrate that the same parotid gland can host PAs and PA-related tumors with different translocations.
Nutritional Care of Patients Admitted to Hospital for Alcohol Withdrawal: A 5-Year Retrospective Audit
Authors: McLean Cameron , Tapsell Linda , Grafenauer Sara , McMahon Anne-Therese 
Published: June 2020

ABSTRACT

Aim
The aim of this study was to describe the characteristics and the nutritional approaches implemented with patients undergoing alcohol withdrawal.

Methods
A retrospective analysis of medical records for patients admitted to a tertiary hospital for alcohol withdrawal was completed over a 5-year period 2013–2017. Data on nutrition-related assessment and management were extracted and descriptively analysed.

Results
A total of 109 medical records were included (M = 73, F = 36), with the mean age of patients 47.3 years (SD ± 11.2, range 22–70). The average length of stay was 3.7 days (SD ± 3.9, range 0.70–27.8). Approaches towards nutritional care emerged from micronutrient assessment and supplementation and/or dietetic consultation. Nutrition-related biochemistry data was available for most patients, notably serum levels of sodium, urea and creatinine (102 patients; 93.5%) and magnesium and phosphate (66 patients, 60.5%). There was evidence of some electrolyte abnormalities on admission to hospital. Eight patients had serum micronutrient status assessed; no patients had serum thiamine levels assessed. Parenteral thiamine was provided to 96 patients (88.0%) for 1.9 days (SD ± 1.1, range 1.0–6.0) with a mean dose of 2458.7 mg (SD ± 1347.6, range 300–6700 mg). Multivitamin supplementation was provided to 24 patients (22.0%). Only 23 patients (21.2%) were seen by a dietician of whom 16 underwent a comprehensive nutritional assessment and 3 were screened using the malnutrition screening tool.

Conclusion
Inconsistent nutritional assessment and management practices were identified across a diverse population group, whilst nutritional professionals were underutilized. Future research should benchmark current guidelines and multidisciplinary approaches considering the role of nutritional specialists in the team.
Descriptive Analysis of 213 Positive Blood Aspiration Cases When Injecting Facial Soft Tissue Fillers
Authors: Tseng Fang Wen , Bommareddy Kanthi , Frank Konstantin , DeLorenzi Claudio , Green Jeremy B , Sadick Neil , Fitzgerald Rebecca , Onishi Emy C , Swift Arthur , Cotofana Sebastian 
Published: June 2020

Abstract

Background
Pre-injection aspiration procedures could increase safety during soft tissue filler injections. However, various influencing factors have been detected in vitro that could result in false negative aspiration results.

Objective
A case series was retrospectively investigated to identify factors contributing to positive blood aspiration procedures in vivo.

Methods
This study evaluated 213 clinical cases positive for blood aspiration documented in an Asian population: 208 females (43.8 ± 7.2 years old) and 5 males (46.8 ± 7.8 years old) during soft tissue filler injections. Injection location, layer (depth) of injection, product injected, size of utilized needle (gauge), length of needle (inch), priming of needle (yes/no), injection angle (degree), and time until blood was visible in the needle hub (seconds) were evaluated.

Results
The most frequent location where a positive aspiration was observed was the pyriform fossa (n = 56; 26.3%), the most frequent plane was the supra-periosteal plane (n = 195; 91.5%), and the most frequent needle utilized was a 27G needle (n = 125; 58.7%). Statistically significantly more positive cases were identified when the needle was primed compared with an unprimed needle (P &lt; 0.001, which was independent of the product). The estimated incidence rate was 0.04% to 0.9% for having positive aspiration procedures per total performed injection procedures.

Conclusions
Pre-injection aspiration could be a valuable tool to prevent accidental intravascular injection of soft tissue filler. The results of the present investigation show that aspiration can be performed with an acceptable aspiration time, that is, less than 2 seconds, if a suitable product/needle combination is chosen.

Level of Evidence: 4