bluuebunny/crossref_metadata_2025_split huggingface dataset:
Limestone-Zeolite Biocomposite as Potential Low-Cost Adsorbent for Landfill Leachate Remediation
Authors: Arif Rosli Mohd , Daud Zawawi , Baharudin Ridzuan Mohd , Awang Halizah 
Published: December 2020

Abstract
A novel approach for the low-cost bioadsorbent for the removal of leachate pollutants is presented herein. In this study, limestone is combined with zeolite in order to fabricate biocomposite media with different ratios. Results revealed that limestone-zeolite biocomposite adsorbed ammoniacal nitrogen (NH3-N) and COD, which could possibly be used for the adsorption of NH3-N and COD efficiently from leachate. The optimum mixing ratio by means was carried out using series of batch experiments for limestone and zeolite to measure the remediation of NH3-N and COD in a stabilized leached. The optimum ratio for limestone and zeolite in the remediation of NH3-N and COD obtained were at 25:15 (82%) and 30:10 (75%), respectively. Indeed, the prepared limestone-zeolite biocomposite is a low-cost and effective adsorbent was potential used to derive the NH3-N and COD for a promising adsorption efficiency from stabilized landfill leachate.
Biotechnology of Water Treatment Based on Algae Cultures
Authors: Ileana Covaliu Cristina , Nedelcu Ancuta , Deak Gyorgy , Stoian Oana , Mohamed Noor Norazian 
Published: December 2020

Abstract
In the current article, we will highlight on the role of algae in the treatment of wastewater. Algae cultures are an interesting solution to tertiary and quandary treatments because of their capacity to use inorganic nitrogen and phosphorus for their growth and to remove heavy metals, as well as some toxic organic compounds, thus, avoiding a secondary pollution. Our experiments were conducted using Chlorella algae for removing lead ions from wastewater. The wastewater treatment efficiency reached a maximum of 86.67% after 80 minutes.
The insulation properties of foam concrete with the use of foam-agent and fly-ash
Authors: Rommel E , Prasetyo1 L , Rusdianto Y , Karimah R , Riyanto A.S. , N Cahyo S.A. 
Published: December 2020

Abstract
Foam concrete is an alternative wall material that can be used in tropical buildings because of its insulation properties, good thermal conductivity, and sound absorption coefficient when compared with the normal concrete. The percentage of foam agent used in its production affects density and compressive strength. Furthermore, the use of fly-ash also has an effect on its mechanical and insulation properties. In this study, 40 units of foam concrete specimen (200x200x20) mm were tested for thermal conductivity, and cylinder (dia-100x20) mm for sound absorption. The mixture used for the concrete includes cement/sand ratio of 1:2.75 with w/c 0.425 and addition of 20% fly-ash as a cementitious material and foaming agent (ratio fa/w 1:20) at 1%, 2%, 3% and 4% by weight of cement paste, respectively. The result showed that foam concrete with 20% fly-ash and 2% foaming agent or more has a density below 2000 kg/m3 with a maximum compressive strength of 13.24 MPa. The highest sound absorption coefficient was obtained to be a = 0.89 at 20% fly-ash and 4% foaming agent. The thermal conductivity (k) of foam concrete was found to have increased using a 20% fly-ash and 1% foaming agent compared to the mixture without fly-ash at a value of 0,898. It was discovered that the use of fly-ash on foam concrete has the ability to improve thermal conductivity and sound absorption.
Comparison of gridded datasets for the simulation of streamflow in Africa
Authors: Tarek Mostafa , Brissette François P. , Arsenault Richard 
Published: December 2020

Abstract
In recent decades, many parts of the African continent have experienced high precipitation variability with periodic drought and flood events. However, the network of streamflow gauges is too sparse in most countries to adequately capture these variations. In addition, no observed reference climatological dataset exists to adequately represent precipitation and temperature changes within all topographic and climatic zones. Consequently, the use of global gridded datasets needs to be considered. This paper aims to use the different available gridded datasets as inputs to a hydrological model to evaluate dataset performance. Nine precipitation and two temperature gridded datasets are used to this effect. The precipitation datasets include two gauged-only products, two satellite products corrected using ground-based observations, four reanalysis products and one merged product of gauge, satellite, and reanalysis. The two temperature datasets include one gauged-only and one reanalysis product. The ten precipitation and two temperature datasets were combined in their 18 possible arrangements for analysis purposes. Each combination was used to force the HMETS lumped hydrological model. The model parameters were calibrated individually for each combination against the streamflow records of 850 African catchments. The Kling-Gupta Efficiency (KGE) was used to evaluate the simulation performance. Results show thatboth temperature datasets performed equally well. Large differences were however observed between precipitation datasets. The MSWEP merged-product was the best-performing precipitation dataset, followed by CHIRPS satellites and ERA5 reanalysis products, respectively. The performance of both gauged-only datasets (CPC and GPCC) was inferior, outlining the limitations of extrapolating information in data-sparse regions.
Finite element analysis of reinforced sand under circular footing
Authors: Rahman A.Abd El , Nagy Nabil M. , Kamal Ismail M. , Hassan Mostafa A. 
Published: December 2020

Abstract
This paper presents the results from numerical investigations carried out on circular footing rests on Geo-grid reinforced sand. The finite element program (Plaxis-2D) was used to study experimental results carried out by [1]. This experimental work was used to study the effect of variation of Geo–grid reinforced layers number (N = 0, 1, 2, and 3) under circular footing. The numerical validation with experimental work was considerably agreed with an average percentage of 93%. Then a parametric study was conducted to evaluate the soil performance under circular footing, while applying the same loading conditions. Several parameters have been investigated to identify the optimumsoil behaviour that achieves optimum bearing capacity and minimum settlement under the footing. The parameters include number of Geo-grid layers (N), the Geo-grid layer width (L), the spacing between the footing base and topmost Geo-grid layer (U), the spacing between Geo-grid layers (h) and the Geo-grid stiffness (K). The results indicated that by increasing the number and the width of the Geo-grid reinforced layers the bearing capacity ratio increases up to a limited extent. Moreover, the optimum number of Geo-grid layer equals four layers for circular footing.
Numerical Modeling of New Connection Pontoon under Static and Dynamic Loads
Authors: Elareshy Ahmed S , Wahab Mostafa M Abdel , Mazek Shreif A , Osman Ashraf M 
Published: December 2020

Abstract
The development of floating bridges is a major engineering challenge to make the existing bridges durable and easy to construct. The connection pontoon unit between the heavy communication bridge (HCB) and the assault bridge (AB-PMM71) is discussed as developed by Mazek et al. [1]. The new connection pontoon (NCP) should offer fast assembly time to operate the combat floating bridge.
The floating bridge system including the HCB, the AB-PMM71, and the NCP is modeled. The 3-D numerical model of the floating bridge system is proposed by the nonlinear finite element analysis under static and dynamic Military load Class MLC70. The field test for the new floating bridge system was conducted by [1].
The proposed finite element model of the floating bridge system is verified based on the practical field test developed by [1]. The numerical results have good agreement with those obtained by the reviewed field test.
Elements of Safety Management System in the Construction Industry and Measuring Safety Performance – A Brief
Authors: Elsebaei Mostafa , Elnawawy Omar , Othman Ayman , Badawy Mohamed 
Published: December 2020

Abstract
Construction industry is considered to be one of the most hazardous industries in the world. The reason could be attributed to its hazardous nature as it is an accident-prone industry. Thus, a need for better understanding of safety management system is essential for improving safety performance in this sector. This paper discusses briefly the elements of safety management by presenting different systems (such as Oregon OSHA Occupational Health and Safety Administration, and OTAR Overseas Territories Aviation Circle) and elaborating their elements. It also discusses two types of measuring safety performance the first is the lagging indicators and the second is the leading indicator. In addition, a field study was conducted to explore contractors’ perception on safety management. A questionnaire was distributed to construction firms. 200 responses were collected and analyzed. All of the results showed positive answers which indicate that safety in performance in Egypt is slightly above average as all means were close to average.
Simulation Study of Trombe Wall for Passive Solar Technique of buildings in Egypt
Authors: Ramadan Ayah Mohamed 
Published: December 2020

Abstract
The studies aimed to evaluate a Trombe wall, a solar wall, which is a critical component of passive solar strategies in energy usage. It is a very compact wall and can be south-facing or north-facing, which is painted black and made of exclusive material that absorbs a lot of heat. The main advantage of the Trombe wall is that they are often easily built from locally obtainable materials, very dependable, and having less repair, maintenance, and operation costs. In this study, a BASECASE model were simulate with “Design Builder” software based on “Energy Plus” with the passive solar technique of Trombe wall in Egypt of a model of residential building with two façade alternative base case. The research has shown that Trombe wall has the possibility of providing acceptable internal thermal comfort through “Mixed-Mode” ventilation strategy in hot climate, this is important in determining the possibility of Trombe wall in incorporating “Mixed-Mode” ventilation reducing energy usage in cooling demands. The conclusion of this research that Trombe walls can reduce the cooling load by 75% compared to the base case with annual energy savings.
The philosophy of visual perception of the external space Using the concept of biophilic design
Authors: Ibrahim Enjy , Khorshed Khaled M. , Sabri Sherif 
Published: December 2020

Abstract
The research deals with the study of the integrated relationship between the elements of visual perceptions of the void and its interaction with the vital elements of it through the study and address the concept and philosophy of visual perceptions of the void and its development through the ages and the effect of these visual perceptions on the perception of life in the vacuum at its levels the three vitals It is the first level: belief in the existence of a life of visual formations and the sense of awareness of users in a dynamic interaction, and comes the second level: with regard to the mental and mental path of the user aware of these visual perceptions as physical elements with vital visions to convey the perception to the existence of real life and not Imagine it, level 3: The presence of the user in the scope of visual perceptions interactively with the characteristics of the formations that he realized between his mental perceptions and his inner feelings and his impression of the place and his human interaction towards it in the conscious and unconscious mind of his vital qualities surrounding the pulsating quality Life has vivid images that interact with the pulse of natural ingredients in the void The research has found that the interaction between human and visual perceptions in the void has exceeded the limits of time and space and has become more oriented towards biophilic design that enhances communication between nature and human, the architect has an important role in applying the concept of biophilic and expressing it to design elements space.
Environmental Assessment of Coastal Resorts: Recreational Spaces as a Case Study
Authors: Hassan Mohamed Sobhi , Sheta Wael Ahmed , El Kordy Ahmed Mohamed 
Published: December 2020

Abstract
Tourism is one of the most important resources of national income in Egypt. Tourism as a vital role in bringing economic benefits to local communities, helping with conservation efforts or placing value on aspects of cultural heritage. Egypt is one of the world’s most attractive countries in terms of its natural and historical characteristics, which makes it eligible to play an important role in the international tourism market. The vision of Egypt 2030 urges all sectors of the state to adhere to the axes of sustainability. Thus, the tourism sector is studying the current situation in the hotel industry and exploring the possibility of applying sustainability to hotels and resorts. This paper studies some of the sustainable practices in outdoor recreational spaces (especially in landscape) affects positively on conservation and the reduction of operation cost. The research method applies the seven principals of Xeriscape, which is considered as one of the sustainable benchmarks to evaluate landscape practices. The research aiming at assessing the coastal resorts in the Red Sea, Egypt from an environmental standpoint, analysing the operation practices in the recreational landscape which affects positively resources, conservation and the reduction of operation cost.
Life cycle assessment of a residential building in Egypt: A case study
Authors: Morsi Dalia M.A. , Ismaeel Walaa S.E. , Abd El-Hamed A. E. 
Published: December 2020

Abstract
The present study discussed the significant environmental impacts of a residential building located in New Cairo, Egypt. This covered all life cycle steps from cradle to cradle with a projected 60-year life span: (i) an inventory of all the construction materials were analysed, covering the building structure as well as the energy consumption; (ii) three types of functional units were defined; (iii) the two top building materials were examined, and a sensitivity analysis was conducted to investigate the impact associated with the choice of building materials. The result shows that two life cycle phases concerning, manufacturing and operation, were more significant in all of the impact categories. It also shows that building structure and flooring result in most of the environmental loads. In terms of the sensitivity analysis, it was found the structural concrete had the largest impact, dominating all selected impact categories except ODP. Finally, limitations and challenges are discussed to explore better design decisions for selecting buildings’ structural systems in future studies.
The impact of an external obstacle daylight in deep office spaces at hot arid zone
Authors: Saeed Doha Mohamed 
Published: December 2020

Abstract
The use of effective daylighting systems is one of the main factors that inflounces energy consumption in buildings especially in deep office spaces. Therefore, the need for innovative daylighting systems with optimum overall daylighting performance - especially in term of saving energy performance - is an essential design element for such spaces. Light shelf systems are the most major potential lighting systems that can be used to provide such innovative daylighting systems.
The parametric approach was implemented where all possible combinations of the various design parameters for the main two design elements of the light shelf system (light shelf and room specifications) were computed through Diva-for-Rhino (Grasshopper). The study of optimized light shelf systems in deep office spaces has been carried out in case of an external obstacle (neighbor) and without it – according to the Egyptian building codes - in order to identify the impact of such design elements on the performance of the optimized light shelf system in the main four directions in hot arid zone climate.
Structural Behavior of Light Weight Ferrocement Walls
Authors: Shaheen Prof.Yousry B. I. , Mousa Dr.Mohsen , Gamal Eng.Eman 
Published: December 2020

Abstract
This paper presents the experimental results of research to develop ferrocement sandwich panels for use as wall bearing units. The proposed panels are lighter in weight relative to the conventional reinforced concrete panels The sandwich panels consisted of two thin ferrocement layers reinforced with one or two layers of closely spaced galvanized welded wire mesh and expanded steel mesh. The core of the panel was made of light weight brick. Steel wires were used to tie the steel meshes of the two skin layers together and to act as shear connectors to transfer shear between the two ferrocement skin layers. These steel wires were embedded in the mortar joints of the brick. The thickness of the ferrocement skin layer was 10mm when single layer of wire mesh was used and 15mm when two layers of mesh reinforcement were used. Experimental investigation was conducted on the proposed panels. A total of 10 sandwich panels Having the dimensions of 600mm width and 700mm height were tested under compressive loadings until failure. The deformation characteristics and cracking behavior were measured and observed for each wall panel. The results showed that high ultimate and serviceability loads, crack resistance control, high ductility, and good energy absorption properties could be achieved by using the proposed panels. This could be of great construction advantages for both developed and developing counties.
Characterizing Pain and Generalized Sensory Sensitivity According to Trauma History Among Patients With Knee Osteoarthritis
Authors: Pierce Jennifer , Hassett Afton L , Brummett Chad M , McAfee Jenna , Sieberg Christine , Schrepf Andrew , Harte Steven E 
Published: December 2020

Abstract

Background
Childhood trauma and adversity have been linked to chronic pain and pain sensitivity, particularly centralized pain. Yet, there remain numerous gaps in our understanding of this link.

Purpose
We explored the association between nonviolent and violent childhood trauma and a component of centralized pain (i.e., generalized sensory sensitivity) and pain sensitivity using self-report measures of centralized pain and quantitative sensory testing (QST).

Methods
Patients scheduled for a total knee arthroplasty (n = 129) completed questionnaires and QST prior to surgery.

Results
We found that self-report measures of centralized pain (i.e., widespread pain, somatic awareness, and sensory sensitivity) displayed a graded relationship across trauma groups, with patients with a history of violent trauma reporting the highest scores. Univariable multinomial logistic regression analyses showed that higher sensory sensitivity was associated with increased risk of being in the nonviolent trauma group compared to the no trauma group. Furthermore, higher widespread pain, higher somatic awareness, and higher sensory sensitivity distinguished the violent trauma group from the no trauma group. In multivariable analyses, sensory sensitivity is uniquely distinguished between the violent trauma group and the no trauma group. QST did not distinguish between groups.

Conclusions
The findings highlight the need for future research and interventions that reduce sensory sensitivity for chronic pain patients with a history of violent childhood trauma.
Early transcriptional response to gravistimulation in poplar without phototropic confounding factors
Authors: Lopez David , Franchel Jérôme , Venisse Jean-Stéphane , Drevet Joël R , Label Philippe , Coutand Catherine , Roeckel-Drevet Patricia 
Published: December 2020

AbstractIn response to gravistimulation under anisotropic light, tree stems showing an active cambium produce reaction wood that redirects the axis of the trees. Several studies have described transcriptomic or proteomic models of reaction wood relative to the opposite wood. However, the mechanisms leading to the formation of reaction wood are difficult to decipher because so many environmental factors can induce various signalling pathways leading to this developmental reprogramming. Using an innovative isotropic device where the phototropic response does not interfere with gravistimulation we characterized the early molecular responses occurring in the stem of poplar after gravistimulation in an isotropic environment, and without deformation of the stem. After 30 min tilting at 35° under anisotropic light, we collected the upper and lower xylems from the inclined stems. Controls were collected from vertical stems. We used a microarray approach to identify differentially expressed transcripts. High-throughput real-time PCR allowed a kinetic experiment at 0, 30, 120 and 180 min after tilting at 35°, with candidate genes. We identified 668 differentially expressed transcripts, from which we selected 153 candidates for additional Fluidigm qPCR assessment. Five candidate co-expression gene clusters have been identified after the kinetic monitoring of the expression of candidate genes. Gene ontology analyses indicate that molecular reprogramming of processes such as ‘wood cell expansion’, ‘cell wall reorganization’ and ‘programmed cell death’ occur as early as 30 min after gravistimulation. Of note is that the change in the expression of different genes involves a fine regulation of gibberellin and brassinosteroid pathways as well as flavonoid and phosphoinositide pathways. Our experimental set-up allowed the identification of genes regulated in early gravitropic response without the bias introduced by phototropic and stem bending responses.
Classification and gene selection of triple-negative breast cancer subtype embedding gene connectivity matrix in deep neural network
Authors: Liu Jin , Su Ran , Zhang Jiahang , Wei Leyi 
Published: December 2020

AbstractTriple-negative breast cancer (TNBC) has been a challenging breast cancer subtype for oncological therapy. Normally, it can be classified into different molecular subtypes. Accurate and stable classification of the six subtypes is essential for personalized treatment of TNBC. In this study, we proposed a new framework to distinguish the six subtypes of TNBC, and this is one of the handful studies that completed the classification based on mRNA and long noncoding RNA expression data. Particularly, we developed a gene selection approach named DGGA, which takes correlation information between genes into account in the process of measuring gene importance and then effectively removes redundant genes. A gene scoring approach that combined GeneRank scores with gene importance generated by deep neural network (DNN), taking inter-subtype discrimination and inner-gene correlations into account, was came up to improve gene selection performance. More importantly, we embedded a gene connectivity matrix in the DNN for sparse learning, which takes additional consideration with weight changes during training when obtaining the measurement of the relative importance of each gene. Finally, Genetic Algorithm was used to simulate the natural evolutionary process to search for the optimal subset of TNBC subtype classification. We validated the proposed method through cross-validation, and the results demonstrate that it can use fewer genes to obtain more accurate classification results. The implementation for the proposed method is available at https://github.com/RanSuLab/TNBC.