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Applied Sciences, Volume 10, Issue 2

January-2 2020 - 305 articles

Cover Story: Haematococcus pluvialis accumulates astaxanthin, which is a high-value antioxidant, during the red cyst stage of its lifecycle. Development of a rigid cell wall in the cysts hinders the recovery of astaxanthin. This article investigates morphological changes and cell disruption of mature Haematococcus pluvialis cysts while using high-pressure homogenization for astaxanthin extraction. Mechanical treatment resulted in 91% of cell disruption and a proportional increase in astaxanthin recovery. This study recommends a synergistic combination of rapid instrumental particle-volume-distribution analysis and microscope-based morphologic phenotyping for the development of practical biorefinery processes that co-produce various biological products, including lipids, proteins, carbohydrates, and astaxanthin. View this paper.
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Articles (305)

  • Feature Paper
  • Article
  • Open Access
45 Citations
6,640 Views
19 Pages

Global MPPT Based on Machine-Learning for PV Arrays Operating under Partial Shading Conditions

  • Christos Kalogerakis,
  • Eftichis Koutroulis and
  • Michail G. Lagoudakis

19 January 2020

A global maximum power point tracking (GMPPT) process must be applied for detecting the position of the GMPP operating point in the minimum possible search time in order to maximize the energy production of a photovoltaic (PV) system when its PV arra...

  • Article
  • Open Access
6 Citations
3,625 Views
22 Pages

19 January 2020

A flexible chassis (FC) is a type of electric vehicle driven by in-wheel motors that can be used in narrow conditions in agricultural facilities. The FC is composed primarily of four off-center steering mechanisms (OSMs) that can be controlled indepe...

  • Article
  • Open Access
6 Citations
2,630 Views
12 Pages

Structural Optimization of Slotting Nozzle Used to Improve Coal-Seam Permeability

  • Zhaolong Ge,
  • Jianyu Zhong,
  • Jianguo Zhang,
  • Yingwei Wang,
  • Youchang Lvu and
  • Sai Zhang

19 January 2020

Slotting directional hydraulic fracturing is a new method for improving permeability of a coal seam in underground coal mines that can solve problems related to non-uniform permeability enhancement in the seam. A slotting nozzle is the key to this te...

  • Article
  • Open Access
8 Citations
3,770 Views
8 Pages

Plasma Electrolysis Spraying Al2O3 Coating onto Quartz Fiber Fabric for Enhanced Thermal Conductivity and Stability

  • Aiming Bu,
  • Yongfu Zhang,
  • Yan Xiang,
  • Yunjie Yang,
  • Weiwei Chen,
  • Huanwu Cheng and
  • Lu Wang

19 January 2020

This manuscript reported the synthesis of Al2O3 coating onto quartz fiber fabric by plasma electrolysis spray for enhanced thermal conductivity and stability. The nano- and micro-sized clusters were partially observed on the coating, while most coati...

  • Article
  • Open Access
26 Citations
6,144 Views
15 Pages

19 January 2020

Because semiconductors absorb wavelengths dependent on the light absorption coefficient, photovoltaic (PV) energy output is affected by the solar spectrum. Therefore, it is necessary to consider the solar spectrum for highly accurate PV output estima...

  • Article
  • Open Access
14 Citations
4,297 Views
24 Pages

19 January 2020

The regulating performance degradation of the stepless capacity regulation system for reciprocating compressors occurs frequently in long-term operations. It affects the safe and stable operation of the compressor seriously. The degradation mechanism...

  • Article
  • Open Access
16 Citations
4,423 Views
18 Pages

19 January 2020

This paper proposes a machine-learning based reduced-order model that can provide fast and accurate prediction of the glottal flow during voice production. The model is based on the Bernoulli equation with a viscous loss term predicted by a deep neur...

  • Article
  • Open Access
67 Citations
8,004 Views
19 Pages

Evaluation of Condition of Concrete Structures Using Ultrasonic Pulse Velocity Method

  • Seonguk Hong,
  • Sangki Yoon,
  • Jonghyun Kim,
  • Changjong Lee,
  • Seunghun Kim and
  • Yongtaeg Lee

19 January 2020

The purpose of this study is to estimate the compressive strength according to the age of the concrete structure using ultrasonic pulse velocity method. If the correlation between the ultrasonic pulse velocity and the compressive strength according t...

  • Article
  • Open Access
20 Citations
7,048 Views
14 Pages

19 January 2020

We present the quantum-like model of information processing by the brain’s neural networks. The model does not refer to genuine quantum processes in the brain. In this model, uncertainty generated by the action potential of a neuron is represen...

  • Article
  • Open Access
31 Citations
5,772 Views
21 Pages

Numerical Study for the Effects of Temperature Dependent Viscosity Flow of Non-Newtonian Fluid with Double Stratification

  • Hafiz Abdul Wahab,
  • Hussan Zeb,
  • Saira Bhatti,
  • Muhammad Gulistan,
  • Seifedine Kadry and
  • Yunyoung Nam

19 January 2020

The main aim of the current study is to determine the effects of the temperature dependent viscosity and thermal conductivity on magnetohydrodynamics (MHD) flow of a non-Newtonian fluid over a nonlinear stretching sheet. The viscosity of the fluid de...

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Appl. Sci. - ISSN 2076-3417