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Feasibility study for simple on-line Raman spectroscopic detection of microplastic particles in water using perfluorocarbon as a particle-capturing medium.

Anal Chim Acta 2021 Jun 16;1165:338518. Epub 2021 Apr 16.

Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul, 04763, Republic of Korea. Electronic address:

A simple Raman spectroscopic scheme for on-line detection of microplastics (MPs) in water is demonstrated. Instead of using a conventional physical filter for MP separation, perfluorohexane (PFH, CF) was deployed as an MP-capturing medium in this study. When PFH was added into a water-filled L-shape tube, it formed a firm droplet at the bottom of the 90° curve due to its strong hydrophobicity and high density. Read More

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A New Assessment of Bicycle Helmets: The Brain Injury Mitigation Effects of New Technologies in Oblique Impacts.

Ann Biomed Eng 2021 May 10. Epub 2021 May 10.

Dyson School of Design Engineering, Imperial College, London, UK.

New helmet technologies have been developed to improve the mitigation of traumatic brain injury (TBI) in bicycle accidents. However, their effectiveness under oblique impacts, which produce more strains in the brain in comparison with vertical impacts adopted by helmet standards, is still unclear. Here we used a new method to assess the brain injury prevention effects of 27 bicycle helmets in oblique impacts, including helmets fitted with a friction-reducing layer (MIPS), a shearing pad (SPIN), a wavy cellular liner (WaveCel), an airbag helmet (Hövding) and a number of conventional helmets. Read More

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EACVI survey on the evaluation of left ventricular diastolic function.

Eur Heart J Cardiovasc Imaging 2021 May 10. Epub 2021 May 10.

BHF Centre for Cardiovascular Science, University of Edinburgh, Chancellors Building, Little France Crescent, Edinburgh EH16 4SB, UK.

Aims: The aim of this study is to analyse how current recommendations on left ventricular (LV) diastolic function assessment have been adopted. Identifying potential discrepancies between recommendations and everyday clinical practice would enable us to better understand and address the remaining challenges in this controversial and complex field.

Methods And Results: A total of 93 centres, mainly from tertiary care settings, responded to the survey. Read More

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Development of a packaging, storage and transportation cabinet for paddy straw mushroom.

J Food Sci Technol 2021 Jun 27;58(6):2377-2384. Epub 2020 Aug 27.

Department of Agricultural Processing and Food Engineering, Orissa University of Agriculture and Technology, Bhubaneswar, 751003 India.

Shelf-life of paddy straw mushroom could be extended to 3 days by pre-cooling mushrooms in air at 14 °C for 2 h followed by packing in 75 µ thick high impact polystyrene punnets with 1.2% perforations as primary package and subsequently stored in expanded polystyrene (EPS) cabinet as secondary package. The EPS cabinet has been designed for transportation of mushroom with ice as cooling aid to maintain the optimum storage temperature. Read More

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The Impact of SARS-COV2 pandemic on the Management OF IPF patients: Our Narrative experience.

Pulm Pharmacol Ther 2021 May 6:102038. Epub 2021 May 6.

Dipartimento Universitario di Promozione Della Salute, Materno Infantile, Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROMISE), Division of Respiratory Medicine, "Paolo Giaccone" University Hospital, University of Palermo; Palermo; Italy.

Background: The SARS-CoV-2 pandemic has changed the health-care systems around the world in a remarkable way. We describe the strategies adopted to cope with the limitations imposed by the pandemic to the access to health care by patients diagnosed with idiopathic Pulmonary Fibrosis (IPF).

Material And Methods: We conducted a retrospective observational analysis including IPF patients under antifibrotic drugs (nintedanib and pirfenidone) that accessed to the Outpatient clinic of the University of Palermo, Italy. Read More

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Syntheses and structures of two benzoyl amides: 2-chloro-4-eth-oxy-3,5-dimeth-oxy--(3-oxo-cyclo-hex-1-en-1-yl)benzamide and 2-chloro--(5,5-dimethyl-3-oxo-cyclo-hex-1-en-1-yl)-4-eth-oxy-3,5-di-meth-oxy-benzamide.

Acta Crystallogr E Crystallogr Commun 2021 Mar 26;77(Pt 3):314-318. Epub 2021 Feb 26.

Department of Natural Sciences, Bowie State University, 14000 Jericho Park Road, Bowie, MD 20715-9465, USA.

The first title benzoyl amide, CHClNO (), crystallizes in the monoclinic space group 2/ with = 4 and the second, CHClNO (), also crystallizes in 2/ with = 8 (' = 2), thus there are two independent mol-ecules in the asymmetric unit. In , the phenyl ring makes a dihedral angle of 50.8 (3)° with the amide moiety with the C=O group on the same side of the mol-ecule as the C-Cl group. Read More

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Research on developing environmental ethics in pharmacists' activities.

Environ Health 2021 May 5;20(1):52. Epub 2021 May 5.

Department of Pharmaceutical Legislation and Management, Faculty of Pharmacy, "Iuliu Haţieganu" University of Medicine and Pharmacy, 12 Ion Creangă Street, Cluj-Napoca, Romania.

Background: Authors of various backgrounds are preoccupied with the meaning of environmental ethics, which refers to specific values, norms, attitudes, and practices with respect to all beings and elements of nature. Many international organizations have adopted important documents proclaiming the ethical obligation to protect the environment in all professional activities. At the national level, professional associations should include and develop this obligation in their codes of conduct. Read More

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Detection Method for Bolted Connection Looseness at Small Angles of Timber Structures based on Deep Learning.

Sensors (Basel) 2021 Apr 29;21(9). Epub 2021 Apr 29.

College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China.

Bolted connections are widely used in timber structures. Bolt looseness is one of the most important factors leading to structural failure. At present, most of the detection methods for bolt looseness do not achieve a good balance between cost and accuracy. Read More

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Revealing the heating value characteristics of sludge-based hydrochar in hydrothermal process: from perspective of hydrolysate.

Water Res 2021 Apr 21;198:117170. Epub 2021 Apr 21.

Shanghai Institute for Design & Research on Environmental Engineering Co., Ltd; Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd.

Hydrothermal treatment (HT) is a promising method to convert sewage sludge to hydrochar biofuel. The heating value is directly correlated to the carbon content in hydrochar; however, the release of organic matter from sludge to hydrolysate and the transfer of the Maillard reaction products generated in the hydrolysate to the solid phase alter the carbon content in hydrochar. In this study, the relationship between hydrolysate and heating value of sludge-based hydrochar was presented, aiming to explain how the calorific value of hydrochar was affected by HT conditions. Read More

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Novel Lignin-Capped Silver Nanoparticles against Multidrug-Resistant Bacteria.

ACS Appl Mater Interfaces 2021 May 4. Epub 2021 May 4.

Faculty of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.

The emergence of bacteria resistant to antibiotics and the resulting infections are increasingly becoming a public health issue. Multidrug-resistant (MDR) bacteria are responsible for infections leading to increased morbidity and mortality in hospitals, prolonged time of hospitalization, and additional burden to financial costs. Therefore, there is an urgent need for novel antibacterial agents that will both treat MDR infections and outsmart the bacterial evolutionary mechanisms, preventing further resistance development. Read More

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Small-Scale Magnetic Actuators with Optimal Six Degrees-of-Freedom.

Adv Mater 2021 May 3:e2100170. Epub 2021 May 3.

Nanyang Technological University, School of Mechanical and Aerospace Engineering, 50 Nanyang Avenue, Singapore, 639798, Singapore.

Magnetic miniature robots (MMRs) are small-scale, untethered actuators which can be controlled by magnetic fields. As these actuators can non-invasively access highly confined and enclosed spaces; they have great potential to revolutionize numerous applications in robotics, materials science, and biomedicine. While the creation of MMRs with six-degrees-of-freedom (six-DOF) represents a major advancement for this class of actuators, these robots are not widely adopted due to two critical limitations: i) under precise orientation control, these MMRs have slow sixth-DOF angular velocities (4 degree s ) and it is difficult to apply desired magnetic forces on them; ii) such MMRs cannot perform soft-bodied functionalities. Read More

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[Prism-Induced Gaze Shift and Strabismus Treatment for Ocular Motility Disorders and Anomalous Head Posture].

Klin Monbl Augenheilkd 2021 Apr 30;238(4):474-477. Epub 2021 Apr 30.

Augenklinik, Kantonsspital St. Gallen, Schweiz.

Background: The therapeutic treatment of ocular motility disorders and anomalous head postures (AHP) is often challenging. We report our experience with prism use in these patients.

Patients And Methods: Retrospective case series of three patients with ocular motility disorders and associated AHP who were treated with prism correction. Read More

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Biological treatment of hazardous heavy metals by Streptomyces rochei ANH for sustainable water management in agriculture.

Sci Rep 2021 Apr 29;11(1):9314. Epub 2021 Apr 29.

Botany and Microbiology Department, Faculty of Science, Alexandria University, Baghdad Street, Moharam Beih, Alexandria, Egypt.

Microbial bioremediation of heavy metals-polluted industrial effluents has been adopted as one of the most effective eco-friendly tool to cope up with the harmful effects of metals. This study was designed to investigate the biosorption potential of marine actinomycetes isolated from the Alexandrian Mediterranean Seacoast, Egypt, with their potential use in metal remediation of industrial effluents. Among the nine marine actinomycetes isolates, Streptomyces rochei ANH showed the highest versatile metal resistance capability with MIC values of 125 mg/l for Cr and 60 mg/l for both Cd and Pb. Read More

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Evaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Application.

Molecules 2021 Apr 24;26(9). Epub 2021 Apr 24.

Department of Chemical Engineering, University of Chemistry and Technology, Technická 5, Praha 6, 166 28 Prague, Czech Republic.

Despite intense research in the field of aqueous organic redox flow batteries, low molecular stability of electroactive compounds limits further commercialization. Additionally, currently used methods typically cannot differentiate between individual capacity fade mechanisms, such as degradation of electroactive compound and its cross-over through the membrane. We present a more complex method for in situ evaluation of (electro)chemical stability of electrolytes using a flow electrolyser and a double half-cell including permeation measurements of electrolyte cross-over through a membrane by a UV-VIS spectrometer. Read More

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Comparison of VOC Emissions Produced by Different Types of Adhesives Based on Test Chambers.

Materials (Basel) 2021 Apr 12;14(8). Epub 2021 Apr 12.

Department of Thermal Physics, Acoustics and Environment, Building Research Institute, 00-611 Warsaw, Poland.

Volatile organic compounds (VOCs) emitted from building materials into the indoor air may cause discomfort associated with a perceptible chemical odour and may irritate the upper respiratory tract. Hence, it is vital to control indoor air pollution sources, such as interior finishing materials, including adhesives. The study involved carrying out a series of experimental tests of VOC emissions of 25 adhesives based on the ISO 16000 series standards. Read More

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Pressure Orientation-Dependent Recovery of 3D-Printed PLA Objects with Varying Infill Degree.

Polymers (Basel) 2021 Apr 14;13(8). Epub 2021 Apr 14.

Virtual Institute of Applied Research on Advanced Materials (VIARAM).

Poly(lactic acid) is not only one of the most often used materials for 3D printing via fused deposition modeling (FDM), but also a shape-memory polymer. This means that objects printed from PLA can, to a certain extent, be deformed and regenerate their original shape automatically when they are heated to a moderate temperature of about 60-100 °C. It is important to note that pure PLA cannot restore broken bonds, so that it is necessary to find structures which can take up large forces by deformation without full breaks. Read More

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High Precision Optical Tracking System Based on near Infrared Trinocular Stereo Vision.

Sensors (Basel) 2021 Apr 4;21(7). Epub 2021 Apr 4.

Experiment Center of Engineering and Material Science, University of Science and Technology of China, Hefei 230027, China.

A high precision optical tracking system (OTS) based on near infrared (NIR) trinocular stereo vision (TSV) is presented in this paper. Compared with the traditional OTS on the basis of binocular stereo vision (BSV), hardware and software are improved. In the hardware aspect, a NIR TSV platform is built, and a new active tool is designed. Read More

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Critical Impact of Nitrogen Vacancies in Nonradical Carbocatalysis on Nitrogen-Doped Graphitic Biochar.

Environ Sci Technol 2021 Apr 29. Epub 2021 Apr 29.

Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 852, Hong Kong, China.

Nitrogen-doped graphitic biochar (NBC) has boosted the development of nonradical peroxymonosulfate (PMS) activation in environmental remediation. However, the specific role of nitrogen species played in NBC-based nonradical carbocatalysis remains vaguely interpreted. To pinpoint the critical nitrogen speciation, a sophisticated thermo-mechanochemical manipulation was exploited to prepare a series of NBCs with similar dimensional structures and oxygen levels but different nitrogen species (. Read More

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Revisiting Mouse Minute Virus (MMV) Inactivation by High Temperature Short Time (HTST) Treatment.

Biotechnol Bioeng 2021 Apr 29. Epub 2021 Apr 29.

Bioproduct Research and Development, Lilly Research Laboratories, Eli Lilly and Company, DC3941 Lilly Corporate Center, Indianapolis, IN, 46285, USA.

In recent years, high temperature short time (HTST) treatment technology has been increasingly adopted for medium treatment to mitigate the potential risk of viral contamination in mammalian cell culture GMP manufacturing facilities. Mouse minute virus (MMV), also called minute virus of mice (MVM), implicated in multiple viral contamination events is commonly used as a relevant model virus to assess the effectiveness of HTST treatment of cell culture media. However, results from different studies vary broadly in inactivation kinetics as well as log reduction factors (LRF) achieved under given treatment conditions. Read More

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A 2D video-analysis scoring system of 90° change of direction technique identifies football players with high knee abduction moment.

Knee Surg Sports Traumatol Arthrosc 2021 Apr 29. Epub 2021 Apr 29.

2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Purpose: Abnormal joint biomechanics and poor neuromuscular control are modifiable risk factors for Anterior Cruciate Ligament (ACL) injury. Although 3D motion capture is the gold standard for the biomechanical evaluation of high-speed multidirectional movements, 2D video analysis is a growing-interest alternative because of its higher cost-effectiveness and interpretability. The aim of the present study was to explore the possible association between a 2D evaluation of a 90° change of direction (COD) and the KAM measured with gold standard 3D motion analysis. Read More

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A shapeable, ultra-stretchable rubber strain sensor based on carbon nanotubes and Ag flakes via melt-mixing process.

J Mater Chem B 2021 Apr 24;9(16):3502-3508. Epub 2021 Mar 24.

MicroNano System Research Center, College of Information and Computer & Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, China.

Promoting the detection range, durability, and shapeable manufacturing of flexible strain sensors is essential to broaden their applications. Therefore, in this study, styrene ethylene butylene styrene (SEBS) rubber as a flexible material and a melt-mixing molding method are adopted to design an ultra-flexible strain sensor. Carbon nanotubes (CNTs) are added to form a conductive network, and the effect of Ag flakes on improving the sensor performance is studied. Read More

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Factors associated with the research efficiency of clinical specialties in a research-oriented hospital in China.

PLoS One 2021 28;16(4):e0250577. Epub 2021 Apr 28.

Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.

Research-oriented hospitals are responsible for medical services tasks, medical education, and scientific research, playing an important role in medical research and application. The research efficiency of a clinical specialty is influenced by factors such as the characteristics of the specialty, the organizational atmosphere, and the clinical director's leadership. The present study aimed to describe the research efficiency of clinical specialties, explore the factors influencing it, and clarify the argument of co-evolution theory regarding the collaborative development of medical services, education, and research. Read More

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Surface Potential Regulation Realizing Stable Sodium/Na Zr Si PO Interface for Room-Temperature Sodium Metal Batteries.

Small 2021 Apr 28:e2100974. Epub 2021 Apr 28.

Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Inorganic Na Zr Si PO is prospective with a high ionic conductivity but suffers large interfacial resistance and stability issues against sodium metal, hindering its practical application in all-solid-state sodium batteries. A surface potential regulation strategy is adopted to address these issues. Na Zr Si PO (NZSP) ceramic with homogeneously-sintered surface is synthesized by a simple two-step sintering method to promote its uniform surface potential, which is favorable for mitigating the potential fluctuations at the interface against Na metal and enhancing interfacial compatibility. Read More

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Maternal positioning with flexed thighs to correct foetal occipito-posterior position in labour: A systematic review and meta-analysis.

Midwifery 2021 Apr 20;99:103008. Epub 2021 Apr 20.

School of Nursing Midwifery and Social Work, The University of Queensland, St Lucia, QLD 4072, SA,. Electronic address:

Background: Foetal occipto-posterior position during labour can contribute to negative outcomes. Encouraging women to adopt positions utilising thigh flexion with the aim of increasing pelvic diameters and promoting foetal rotation to the occpito-anterior position are often used. However, the efficacy of these strategies has not yet been determined. Read More

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2-D simulation of atmospheric boundary layer in and around Delhi to determine air pollution scenarios during winter morning.

Environ Monit Assess 2021 Apr 24;193(5):295. Epub 2021 Apr 24.

Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.

In this paper, a 2-D turbulent closure model, based on the pollutant mass conservation equation, is adopted to estimate the local and background pollutants in the predominant wind direction for the stable atmosphere during winter mornings. The background concentration of pollutants can severely affect the regional pollution level, and its monitoring is a challenging task. Here, the turbulent closure model is employed across three cities in India, viz. Read More

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Facile synthesis of CNT interconnected PVP-ZIF-8 derived hierarchically porous Zn/N co-doped carbon frameworks for oxygen reduction.

Nanoscale 2021 Mar 22;13(12):6248-6258. Epub 2021 Mar 22.

Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra 411008, India.

In this work, a strategy has been adopted to construct an architecture through the coordination of polyvinylpyrrolidone (PVP) and a monodisperse zeolitic imidazolate framework (ZIF-8), which was entwined by carbon nanotubes (CNTs) firstly, followed by a pyrolysis process to obtain the hybrid catalyst. The meticulous design of the hybrid material using CNTs to interconnect the PVP assisted ZIF-8 derived porous carbon frameworks together produces a hierarchical pore structure and dual-heteroatom (Zn/N) doping (Zn-N/PC@CNT). Without further acid treatment, the hybrid material prepared after pyrolysis at 900 °C (PVP-ZIF-8@CNT-900) has been demonstrated as an efficient non-precious metal catalyst for the oxygen reduction reaction (ORR) with its superior stability compared to the commercial 20 wt% Pt/C catalyst in alkaline media. Read More

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Advancing on weighted PLS-SEM in examining the trust-based recommendation system in pioneering product promotion effectiveness.

Qual Quant 2021 Apr 15:1-30. Epub 2021 Apr 15.

Department of School of Economics and Management, Xiamen University Malaysia, Sepang, Selangor Malaysia.

The advancement in digital technologies has led to an explosive information phenomenon, particularly in Internet shopping. This paper attempts to examine the trust element in the current pervasive use of the recommendation system for product promotion effectiveness. Owing to the nature of high-volume online consumers and the nonexistence of the online consumer sampling frame, sampling weight adjustment approach was utilised for ensuring sample representativeness. Read More

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A unified framework for personalized regions selection and functional relation modeling for early MCI identification.

Neuroimage 2021 Apr 18;236:118048. Epub 2021 Apr 18.

Department of Brain and Cognitive Engineering, Korea University, Republic of Korea; Department of Artificial Intelligence, Korea University, Republic of Korea. Electronic address:

Resting-state functional magnetic resonance imaging (rs-fMRI) has been widely adopted to investigate functional abnormalities in brain diseases. Rs-fMRI data is unsupervised in nature because the psychological and neurological labels are coarse-grained, and no accurate region-wise label is provided along with the complex co-activities of multiple regions. To the best of our knowledge, most studies regarding univariate group analysis or multivariate pattern recognition for brain disease identification have focused on discovering functional characteristics shared across subjects; however, they have paid less attention to individual properties of neural activities that result from different symptoms or degrees of abnormality. Read More

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Impact of Environmental Variables on Parasitism and Emergence of Trichogramma pretiosum, Telenomus remus and Telenomus podisi.

Neotrop Entomol 2021 Apr 19. Epub 2021 Apr 19.

Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Soja, Londrina, PR, Brazil.

Environmental variables may markedly influence egg parasitoid performance and must be considered when choosing the best release strategy. Thus, this study aimed to investigate the effects of light, temperature, soil moisture, and precipitation on the emergence and parasitism of parasitoid releases of unprotected and encapsulated pupae. The presence of light favored the parasitism of Trichogramma pretiosum Riley, 1879, and Telenomus remus (Nixon, 1937) but did not impact the parasitism of Telenomus podisi (Ashmead, 1893). Read More

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Alkali activation of compacted termite mound soil for eco-friendly construction materials.

Heliyon 2021 Mar 30;7(3):e06597. Epub 2021 Mar 30.

Department of Biosystems Engineering, University of Sao Paulo, Pirassununga, Sao Paulo, Brazil.

This investigation prospects the feasibility of optimizing the mechanical behavior and dimensional stability of termite's mound soil through alkaline activation. The raw aluminosilicate (termites' soil) was used without any pre-thermal treatment and natural occurring potash was used as the alkaline activator. Different activation level and different initial curing temperature were adopted to examine the effect of the initial temperature and the activator concentration on the Alkali Activated Termite Soil (AATS). Read More

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