1. A novel hybrid predictive maintenance model based on clustering, smote and multi-layer perceptron neural network optimised with grey wolf algorithm

   • Albert Buabeng
   • Anthony Simons
   • Yao Yevenyo Ziggah

   Research Article Open access 30 April 2021 Article: 593

   

2. Applied mineralogy of zirconium minerals: a case study of alkaline intrusion in SE-Brazil

   • Ana Olivia Barufi Franco-Magalhães
   • Daniel Françoso de Godoy

   Research Article Open access 29 April 2021 Article: 592

   

3. BODIPY-based fluorescent polymeric probes for selective detection of Fe³⁺ ions in aqueous solution

   • Li Xiao
   • Chunqing Li
   • Xinjian Cheng

   Research Article Open access 29 April 2021 Article: 591

   

4. Real-time 2D–3D door detection and state classification on a low-power device

   • João Gaspar Ramôa
   • Vasco Lopes
   • S. Mogo

   Research Article Open access 29 April 2021 Article: 590

   

5. Fault detection technique for modified cascaded half-bridge multi-level inverter with polarity changer in pv grid system

   • Ujjval B Vyas
   • Varsha A Shah
   • Srivani S G

   Research Article Open access 29 April 2021 Article: 589

   

6. Estimating zonal Ekman transport along coastal Senegal during passage of Hurricane Fred, 30–31 August 2015

   • Abdou Lahat Dieng
   • Siny Ndoye
   • Amadou T. Gaye

   Research Article Open access 29 April 2021 Article: 588

   

7. Soil salinity mapping using Landsat 8 OLI data and regression modeling in the Great Hungarian Plain

   • Ghada Sahbeni

   Research Article Open access 28 April 2021 Article: 587

   

8. Functionalization of hydrophobic nonwoven cotton fabric for oil and water repellency

   • Pran Krisna Saha
   • Rony Mia
   • Taosif Ahmed

   Research Article Open access 26 April 2021 Article: 586

   

9. Investigation on the performance and emissions profile of CI engine using cashew nut shell pyro oil–toluene–diesel blends

   • K. Venkatesan

   Research Article Open access 26 April 2021 Article: 585

   

10. Numerical study of the effect of geometric arrangement of the truss on the response modification factor of the special truss moment frame (STMF)

    • M. Sadeghpour
    • V. R. Kalatjari
    • H. Pahlavan

    Research Article Open access 26 April 2021 Article: 584

    

11. Promotion of active ageing through interactive artificial agents in a smart environment

    • Paulo Menezes
    • Rui P. Rocha

    Research Article Open access 26 April 2021 Article: 583

    

12. Soil erosion and sediment yield assessment using RUSLE and GIS-based approach in Anjeb watershed, Northwest Ethiopia

    • Lewoye Tsegaye
    • Rishikesh Bharti

    Research Article Open access 26 April 2021 Article: 582

    

13. Geochemical variations due to salinization in groundwater along the southeast coast of India

    • Thilagavathi Rajendiran
    • Chidambaram Sabarathinam
    • Ramanathan Alagappan

    Research Article Open access 26 April 2021 Article: 581

    

14. Occupational exposure of librarians to mold spores and metal particles: a real-time case study

    • Alberto Baldelli
    • Brett Couch
    • Karen Bartlett

    Research Article Open access 23 April 2021 Article: 580

    

15. Short alkyl chain length ionic liquid as organic modifier in polypropylene/clay nanocomposite: a thermal comparative study

    • Priscila Vedovello
    • Ana Catarina de Oliveira Gomes
    • Caio Marcio Paranhos

    Research Article Open access 23 April 2021 Article: 579

    

16. Numerical investigation of the impact of inclined baffles and an elastic vibrating beam on the thermo-fluid behavior in a rectangular channel

    • S. Faramarzi
    • R. Ghasemiasl
    • F. Ghadami

    Research Article Open access 23 April 2021 Article: 578

    

17. Hydrothermal liquefaction of wood chips under supercritical and subcritical water reaction conditions

    • Naoto Shimizu
    • Bingyao Zeng
    • Keisuke Kushima

    Research Article Open access 23 April 2021 Article: 577

    

18. Stakeholder collaboration and irrigation practices in Ghana: issues, challenges, and the way forward

    • Dorothy Julian Nalumu
    • Henry Mensah
    • Stephen Appiah Takyi

    Research Article Open access 22 April 2021 Article: 576

    

19. Rainfall trend analysis and weather forecast accuracy in selected parts of Khyber Pakhtunkhwa, Pakistan

    • Fakhri Alam
    • Muhammad Salam
    • Masaud Khan

    Research Article Open access 21 April 2021 Article: 575

    

20. Application of micro-computer tomography and inverse finite element analysis for characterizing the visco-hyperelastic response of bulk liver tissue using indentation

    • Rajeswara R. Resapu
    • Roger D. Bradshaw

    Research Article Open access 21 April 2021 Article: 574

    

21. Geoinformatics-based assessment of land deformation and damage zonation for Gorkha earthquake, 2015, using SAR interferometry and ANN approach

    • Tannu Priya
    • Arvind Chandra Pandey

    Research Article Open access 21 April 2021 Article: 573

    

22. A systematic approach of lean supply chain management in shipbuilding

    • Niansheng Chu
    • Xiang Nie
    • Kunlin Li

    Research Article Open access 21 April 2021 Article: 572

    

23. Mapping in unstructured natural environment: a sensor fusion framework for wearable sensor suites

    • Georges Chahine
    • Maxime Vaidis
    • Cédric Pradalier

    Research Article Open access 21 April 2021 Article: 571

    

24. A case study on the observability of cutting fluid flow and the associated contact mechanics in scaled rough surfaces

    • Michael Müller
    • Lukas Stahl
    • Christoph Herrmann

    Case Study Open access 20 April 2021 Article: 570

    

25. Geophagic clay around Uteh-Uzalla near Benin: mineral and trace elements compositions and possible health implications

    • Iyobosa Timothy Asowata

    Research Article Open access 20 April 2021 Article: 569

    

26. Physical stabilization of expansive subgrade soil using locally produced geogrid material

    • Samson Yonas Aga

    Research Article Open access 20 April 2021 Article: 568

    

27. Solar photovoltaic-based microgrid hosting capacity evaluation in electrical energy distribution network with voltage quality analysis

    • Arvind Sharma
    • Mohan Kolhe
    • Panos Kotsampopoulos

    Research Article Open access 20 April 2021 Article: 567

    

28. Bias-inducing allosteric binding site in mu-opioid receptor signaling

    • Andrés F. Marmolejo-Valencia
    • Abraham Madariaga-Mazón
    • Karina Martinez-Mayorga

    Research Article Open access 19 April 2021 Article: 566

    

29. Structure, phase transformation, and hardness of NiTiHfNd alloys

    • Chunwang Zhao
    • Shilei Zhao

    Short Communication Open access 17 April 2021 Article: 565

    

30. The effect of copper source on the stability and activity of α-tocopherol acetate, butylated hydroxytoulene and phytase

    • Michael J. Concarr
    • Rachel O’Rourke
    • Richard A. Murphy

    Research Article Open access 17 April 2021 Article: 564

    

31. A novel sensitive based approach to ATC enhancement in wind power integrated transmission system

    • Aishvarya Narain
    • S. K. Srivastava
    • S. N. Singh

    Research Article Open access 17 April 2021 Article: 563

    

32. Green synthesis of single phase hausmannite Mn₃O₄ nanoparticles via Aspalathus linearis natural extract

    • A. Diallo
    • N. Tandjigora
    • M. Maaza

    Research Article Open access 17 April 2021 Article: 562

    

33. Unique steel belt press technology for high strength papers from high yield pulp

    • Tove Joelsson
    • Anna Svedberg
    • Per Engstrand

    Research Article Open access 16 April 2021 Article: 561

    

34. Threat of arsenic contamination, salinity and water pollution in agricultural practices of Sundarban Delta, India, and mitigation strategies

    • Anirban Nath
    • Sourav Samanta
    • Sugata Hazra

    Review Paper Open access 15 April 2021 Article: 560

    

35. Effect of deficit irrigation and kaolin clay on yield and yield components of pumpkin (Cucurbita pepo L.)

    • Mikaiel Khalili
    • Fatemeh Nejatzadeh

    Research Article Open access 14 April 2021 Article: 559

    

36. An autonomous mobile manipulator to build outdoor structures consisting of heterogeneous brick patterns

    • Meysam Basiri
    • João Gonçalves
    • Pedro Lima

    Research Article Open access 14 April 2021 Article: 558

    

37. Experimental investigation of the displacement flow mechanism and oil recovery in primary polymer flood operations

    • Ruissein Mahon
    • Gbenga Oluyemi
    • Yakubu Balogun

    Research Article Open access 14 April 2021 Article: 557

    

38. Correction to: Conversion of geared DC motor into stepper motor using switching delay time signals

    • Venkatarao Dadi
    • Swapna Peravali
    • Rambabu Busi

    Correction Open access 13 April 2021 Article: 556

39. Effects of memristive synapse radiation interactions on learning in spiking neural networks

    • Sumedha Gandharava Dahl
    • Robert C. Ivans
    • Kurtis D. Cantley

    Research Article Open access 13 April 2021 Article: 555

    

40. Lifetime of electrochromic optical transition cycling of ethyl viologen diperchlorate-based electrochromic devices

    • Logan G. Kiefer
    • Christian J. Robert
    • Taylor D. Sparks

    Research Article Open access 13 April 2021 Article: 554

    

41. Suggestion and invention of recipes using bi-directional LSTMs-based frameworks

    • Sai Nikhil Rao Gona
    • Himamsu Marellapudi

    Research Article Open access 13 April 2021 Article: 553

    

42. Heavy metals assessment in water, soil, vegetables and their associated health risks via consumption of vegetables, District Kasur, Pakistan

    • Imtiaz Ashraf
    • Faizan Ahmad
    • Haipeng Teng

    Research Article Open access 13 April 2021 Article: 552

    

43. Clayey soils from Boulgou (North Cameroon): geotechnical, mineralogical, chemical characteristics and properties of their fired products

    • A. Nzeukou Nzeugang
    • D. Tsozué
    • N. Fagel

    Research Article Open access 13 April 2021 Article: 551

    

44. Using efficiency frontier to inform operational decision-making

    • Matthew Benchener
    • Lingfeng Li

    Research Article Open access 13 April 2021 Article: 550

    

45. Climate change/variability and hydrological modelling studies in Zimbabwe: a review of progress and knowledge gaps

    • Auther Maviza
    • Fethi Ahmed

    Review Paper Open access 12 April 2021 Article: 549

    

46. Factors influencing climate change adaptation strategies in North-Western Ghana: evidence of farmers in the Black Volta Basin in Upper West region

    • Francis X. K. Mwinkom
    • Lawrence Damnyag
    • Suhiyini I. Alhassan

    Research Article Open access 12 April 2021 Article: 548

    

47. A hybrid metaheuristic optimisation technique for load frequency control

    • Rajeshree Ramjug-Ballgobin
    • Chiranjeev Ramlukon

    Research Article Open access 12 April 2021 Article: 547

    

48. Correction to: Earthquake-induced clastic dyke and fluid inflow at the Miguel Burnier manganese-ore deposit, Quadrilátero Ferrífero of Minas Gerais, Brazil

    • Tiago Henrique DeFerreira
    • Alexandre Raphael Cabral
    • Francisco Javier Rios

    Correction Open access 12 April 2021 Article: 546

49. Data assimilation of structural deformation using finite element simulations and single-perspective projection data based on the example of X-ray imaging

    • Ines Butz
    • Stefan Moser
    • Stefan Hiermaier

    Research Article Open access 12 April 2021 Article: 545

    

50. Simulating the performance of a highly efficient CuBi₂O₄-based thin-film solar cell

    • Adnan Hosen
    • Md. Suruz Mian
    • Sheikh Rashel Al Ahmed

    Research Article Open access 09 April 2021 Article: 544