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1. Adaptive backstepping control for master-slave AC microgrid in smart island

Author:
Moslem Dehghani; Taher Niknam; Mohammad Ghiasi; Hamid Reza Baghaee; Frede Blaabjerg; Tomislav Dragicevǐć; Mohammadrashid Rashidi
Source:
Energy 2022 v.246 pp. 123282
ISSN:
0360-5442
Subject:
normal values,   etc   ; computer simulation; computer software; controllers; design; electric potential difference;     Show all 6 Subjects
Abstract:
... To control a smart-island (which comprises three distributed generation (DG) units with their autonomous converters), based on a nonlinear backstepping control (BSC) scheme, an adaptive reference signal, and a state observer are designed to improve the steady-state performance of the system. An adaptive reference value has been designed and used instead of a constant reference signal to improve th ...
DOI:
10.1016/j.energy.2022.123282

2. Expandable deep width learning for voltage control of three-state energy model based smart grids containing flexible energy sources

Author:
Linfei Yin; Yuejiang Lu
Source:
Energy 2021 v.226 pp. 120437
ISSN:
0360-5442
Subject:
normal values,   etc   ; algorithms; artificial intelligence; controllers; electric potential difference; electrical equipment; exhibitions; neural networks;     Show all 8 Subjects
Abstract:
... The article establishes a three-state energy (TSE) model for flexible energy sources (FESs) connected to smart grids. The article proposes a unified time-scale (UTS) coordinated primary voltage control framework and a UTS coordinated primary voltage controller for voltage control of smart grids containing a high proportion of FESs. To mitigate uncoordinated voltage, the proposed control framework ...
DOI:
10.1016/j.energy.2021.120437

3. Simple tests for stock return predictability with good size and power properties

Author:
David I. Harvey; Stephen J. Leybourne; A.M. Robert Taylor
Source:
Journal of econometrics 2021 v.224 no.1 pp. 198-214
ISSN:
0304-4076
Subject:
normal values,   etc   ; costs and returns; econometrics; journals; reference standards; rooting; roots; sample size; testing;     Show all 9 Subjects
Abstract:
... We develop easy-to-implement tests for return predictability which, relative to extant tests in the literature, display attractive finite sample size control and power across a wide range of persistence and endogeneity levels for the predictor. Our approach is based on the standard regression t-ratio and a variant where the predictor is quasi-GLS (rather than OLS) demeaned. In the strongly persist ...
DOI:
10.1016/j.jeconom.2021.01.004

4. Effect of cement-to-tailings ratio and flow rate on the wear performance of filling pipeline

Author:
Yingying Wang; Yong Wang; Gangfeng Yang; Zhuen Ruan; Zhenqi Wang
Source:
Powder technology 2022 v.397 pp. 117027
ISSN:
0032-5910
Subject:
normal values,   etc   ; application methods; exhibitions; filling (processing); mathematical models; pipelines; pipes; powders; slurries; solids; testing; transportation; walls;     Show all 13 Subjects
Abstract:
... Pipeline wear is a common problem faced by all filling mines. The change of filling slurry cement-to-tailings ratio and flow rate is the key factor affecting pipeline wear. To determine the influence of different filling slurry cement-to-tailings ratios and flow rates on pipeline wear, a kind of pipeline wear loop test system was developed. Its application method was proposed. The test system was ...
DOI:
10.1016/j.powtec.2021.117027

5. Evaluation of thermal optical analysis (TOA) using an aqueous binary mixture

Author:
Courtney D. Grimes; Joseph M. Conny; Russell R. Dickerson
Source:
Atmospheric environment 2020 v.241 pp. 117647
ISSN:
1352-2310
Subject:
normal values,   etc   ; atmospheric chemistry; monitoring; organic carbon; temperature; uncertainty;     Show all 6 Subjects
Abstract:
... Thermal-Optical Analysis (TOA), a commonly implemented technique used to measure the amount of particulate carbon in the atmosphere or deposited on a filter substrate, distinguishes organic carbon (OC) from elemental carbon (EC) through the monitoring of laser light, heating, and measuring evolved carbon. Here, we present a method to characterize the TOA transmission method with an aqueous binary ...
DOI:
10.1016/j.atmosenv.2020.117647

6. Assessment of some governance aspects in waste management systems: A case study in Mexican municipalities

Author:
Dolores Elizabeth Turcott Cervantes; Elvira Olay Romero; María del Consuelo Hernández Berriel; Ana López Martínez; María del Consuelo Mañón Salas; Amaya Lobo
Source:
Journal of cleaner production 2021 v.278 pp. 123320
ISSN:
0959-6526
Subject:
normal values,   etc   ; case studies; decision making; developing countries; governance; issues and policy; laws and regulations; management systems; municipal solid waste; uncertainty; waste management;     Show all 11 Subjects
Abstract:
... Many municipalities, particularly in developing countries, have a lack of information to guide decision-making to improve municipal solid waste management (MSWM). They need tools that systematize the collection and analysis of data, and then assess all aspects of the system, including both technical and non-technical ones. This work presents a field study covering 66 Mexican municipalities. A new ...
DOI:
10.1016/j.jclepro.2020.123320

7. Microstructural Effect Limitations in the Analysis of SnAg, SnBi and SnIn Lead-free Solders by Wavelength Dispersion X-Ray Spectrometry

Author:
Tadeusz Gorewoda; Zofia Mzyk; Jacek Anyszkiewicz; Katarzyna Bilewska; Andrzej Cybulski; Joanna Gołębiewska-Kurzawska; Magdalena Knapik; Justyna Kostrzewa; Magdalena Grzegorczyk; Szymon Malara
Source:
Journal of analytical chemistry 2020 v.75 no.1 pp. 56-62
ISSN:
1061-9348
Subject:
normal values,   etc   ; X-ray fluorescence spectroscopy; calibration; furnaces; microstructure; wavelengths;     Show all 6 Subjects
Abstract:
... This article describes the effects of microstructures in an analysis of lead-free solders, namely SnAg, SnBi and SnIn, using X-ray fluorescence spectrometry (XRF). The size of the microstructures in the samples and calibration materials has a strong impact on the calibration accuracy and results. A comparison of the microstructure size and critical thickness values demonstrated the importance of t ...
DOI:
10.1134/S1061934820010086

8. Terahertz Time of Flight Spectroscopy as a Coating Thickness Reference Method for Partial Least Squares Near Infrared Spectroscopy Models

Author:
Shikhar Mohan; Noritaka Odani; Md. Nayeem Hossain; Hanzhou Feng; Yi Li; Eiji Kato; James K. Drennen; Carl A. Anderson
Source:
Analytical chemistry 2020 v.92 no.5 pp. 3658-3665
ISSN:
1520-6882
Subject:
normal values,   etc   ; coatings; least squares; models; monitoring; near-infrared spectroscopy;     Show all 6 Subjects
Abstract:
... Near infrared spectroscopy (NIRS) is often used during the tablet coating process to assess coating thickness. As the coating process proceeds, the increase and decrease in NIRS signal from both the coating formulation and tablet core has been related to coating thickness. Partial least-squares models are often generated relating NIRS spectra to reference coating thickness measurements for in-line ...
DOI:
10.1021/acs.analchem.9b04750

9. Clinical evaluation of the pharmacological impact of ashwagandha root extract on sleep in healthy volunteers and insomnia patients: A double-blind, randomized, parallel-group, placebo-controlled study

Author:
Deepak Langade; Vaishali Thakare; Subodh Kanchi; Sunil Kelgane
Source:
Journal of ethnopharmacology 2021 v.264 pp. 113276
ISSN:
0378-8741
Subject:
normal values,   etc   ; Withania somnifera; analysis of variance; anxiety; clinical examination; clinical trials; drug therapy; patients; placebos; questionnaires; root extracts; sleep; sleep disorders; traditional medicine; volunteers;     Show all 15 Subjects
Abstract:
... Ashwagandha (Withania somnifera (L.) Dunal.) is long known for its sleep-inducing effects. Ashwagandha can be proposed as an alternative to the recommended present treatments for insomnia. This study aimed to evaluate the pharmacological effect of Ashwagandha root extract on sleep in healthy subjects and also in the subjects having insomnia.We performed a randomized, parallel-group, stratified des ...
DOI:
10.1016/j.jep.2020.113276

10. Reference values for selected ophthalmic diagnostic tests in two species of microchiroptera bats (Artibeus lituratus and Anoura caudifer)

Author:
André Tavares Somma; Christiane M. Coimbra; Rogério R. Lange; Bret A. Moore; Fabiano Montiani‐Ferreira
Source:
Veterinary ophthalmology 2020 v.23 no.1 pp. 61-66
ISSN:
1463-5216
Subject:
normal values,   etc   ; Artibeus lituratus; animal diseases; diagnostic techniques; eye diseases; ophthalmology; tears;     Show all 7 Subjects
Abstract:
... OBJECTIVE: To establish reference values for ophthalmic tests in two bat species. BATS: Fourteen bats including seven great fruit‐eating bats (Artibeus lituratus) and seven tailed tailless bats (Anoura caudifer). PROCEDURES: Normal values for following ophthalmic tests were investigated as follows: (a) aqueous tear production using the standardized endodontic paper point tear test (EPPTT), (b) reb ...
DOI:
10.1111/vop.12690

11. Is active recovery during cold water immersion better than active or passive recovery in thermoneutral water for postrecovery high-intensity sprint interval performance?

Author:
Daryl M.G. Hurrie; Gordon G. Giesbrecht
Source:
Applied physiology, nutrition and metabolism 2020 v.45 no.3 pp. 251-257
ISSN:
1715-5320
Subject:
normal values,   etc   ; blood; cold; exercise; heart rate; lactic acid; muscles; temperature; water;     Show all 9 Subjects
Abstract:
... High-intensity exercise is impaired by increased esophageal temperature (Tₑₛ) above 38 °C and/or decreased muscle temperature. We compared the effects of three 30-min recovery strategies following a first set of three 30-s Wingate tests (set 1), on a similar postrecovery set of Wingate tests (set 2). Recovery conditions were passive recovery in thermoneutral (34 °C) water (Passive-TN) and active r ...
DOI:
10.1139/apnm-2019-0189

12. Simultaneous quantification of steroid hormones and endocannabinoids (ECs) in human hair using an automated supported liquid extraction (SLE) and LC-MS/MS – Insights into EC baseline values and correlation to steroid concentrations

Author:
Clarissa Daniela Voegel; Markus R. Baumgartner; Thomas Kraemer; Stefan Wüst; Tina Maria Binz
Source:
Talanta 2021 v.222 pp. 121499
ISSN:
0039-9140
Subject:
normal values,   etc   ; androstenedione; automation; cannabinoids; cleaning; cortisol; cortisone; females; hairs; humans; liquid chromatography; males; methanol; progesterone; solvents; steroid hormones; stress response; tandem mass spectrometry; testosterone; young adults;     Show all 20 Subjects
Abstract:
... Endogenous steroid hormones and endocannabinoids (ECs) are important regulators in the stress response of the human body. For the measurement of chronic stress, hair analysis has been established as method of choice for long-term and retrospective determination of endogenous stress markers. A sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the quantification of five ...
DOI:
10.1016/j.talanta.2020.121499

13. Transport of polymers in contact lenses and impact on lubricity

Author:
Yifan Yu; Timothy Guerriero; James Carpenter; Anuj Chauhan
Source:
Colloids and surfaces 2020 v.603 pp. 125123
ISSN:
0927-7757
Subject:
normal values,   etc   ; carboxymethylcellulose; lubricants; molecular weight; phosphates; polyvinyl alcohol; soaking; ultraviolet-visible spectroscopy;     Show all 8 Subjects
Abstract:
... Contact lens induced discomfort (CLD) has been recognized as the most common cause of contact lens wearer drop-out over the past four decades. Many studies show correlation between comfort and lubricity, which can be increased by incorporation of lubricating polymers in lenses to serve as comfort agents. The objective of this study is to measure the effect of two different comfort-agent incorporat ...
DOI:
10.1016/j.colsurfa.2020.125123

14. Extreme-scale load-aligning rotor: To hinge or not to hinge?

Author:
Carlos Noyes; Eric Loth; Dana Martin; Kathryn Johnson; Gavin Ananda; Michael Selig
Source:
Applied energy 2020 v.257 pp. 113985
ISSN:
0306-2619
Subject:
normal values,   etc   ; blades; energy; power generation; rotors; wind power; wind speed; wind turbines;     Show all 8 Subjects
Abstract:
... Load alignment, balancing the thrust moment with the centrifugal moment, is a promising innovation for extreme-scale wind turbines. Load alignment allows for longer blades, capturing more power, while maintaining similar blade moments. As blades lengthen, larger coning angles are required to balance increasing thrust moments with centrifugal moments. This yields a key question for such extreme-sca ...
DOI:
10.1016/j.apenergy.2019.113985

15. Measuring and comparing the sustainability of coastal tourism destinations in Germany, Lithuania, and Indonesia

Author:
Johanna Schumacher; Gerald Schernewski; Donalda Karnauskaitė; Marija Kataržytė; Stefanie Pakleppa; Kathrin Pape; Silke Schönwald; Matthias Völzke
Source:
Environment, development and sustainability 2020 v.22 no.3 pp. 2451-2475
ISSN:
1387-585X
Subject:
normal values,   etc   ; ecosystems; ecotourism; environment; guidelines; planning; reproducibility; sustainable development; Germany; Indonesia; Lithuania;     Show all 11 Subjects
Abstract:
... An important aim of the European Sustainable Development Strategy is to measure the state of sustainability in coastal communities. While numerous indicators have been developed to estimate a regions sustainability, they go largely unused, due to the difficulty in applying them over a broad region. In an effort to improve upon this situation, we have improved the indicator set developed within the ...
DOI:
10.1007/s10668-018-00301-4

16. Technical indicators to improve municipal solid waste management in developing countries: A case in Mexico

Author:
Elvira Olay-Romero; Dolores Elizabeth Turcott-Cervantes; María del Consuelo Hernández-Berriel; Amaya Lobo-García de Cortázar; Miguel Cuartas-Hernández; Isaías de la Rosa-Gómez
Source:
Waste management 2020 v.107 pp. 201-210
ISSN:
0956-053X
Subject:
normal values,   etc   ; cleaning; developing countries; monitoring; municipal solid waste; uncertainty; zero wastes; Mexico;     Show all 8 Subjects
Abstract:
... Nowadays, increasingly complex sets of indicators are used to compare and diagnose municipal solid waste management (MSWM). These sets incorporate new priorities regarding sustainability and focus on measuring the progress to zero waste. Nevertheless, in developing countries, where MSWM is still striving to protect health from the potential impacts of waste, the MSWM information available is scarc ...
DOI:
10.1016/j.wasman.2020.03.039

17. The Development of a Framework for Assessing the Energy Efficiency in Urban Water Systems and Its Demonstration in the Portuguese Water Sector

Author:
Dália Loureiro; Catarina Silva; Maria Adriana Cardoso; Aisha Mamade; Helena Alegre; Maria João Rosa
Source:
Water 2020 v.12 no.1 pp. -
ISSN:
2073-4441
Subject:
normal values,   etc   ; aeration; drinking water; energy efficiency; equipment; stormwater; wastewater treatment; water utilities;     Show all 8 Subjects
Abstract:
... Urban water systems (UWSs) are energy-intensive worldwide, particularly for drinking-water pumping and aeration in wastewater treatment. Usual approaches to improve energy efficiency focus only on equipment and disregard the UWS as a continuum of stages from source-to-tap-to-source (abstraction/transport—treatment—drinking water transport/distribution—wastewater and stormwater collection/transport ...
DOI:
10.3390/w12010134

18. A morphological and stereological study on brain, cerebral hemispheres and cerebellum of New Zealand rabbits

Author:
Muhammet Lütfi Selçuk; Saadettin Tıpırdamaz
Source:
Anatomia, histologia, embryologia 2020 v.49 no.1 pp. 90-96
ISSN:
0340-2096
Subject:
normal values,   etc   ; New Zealand White rabbit; asymmetry; cerebellum; females; histology; males; morphometry; rabbits;     Show all 9 Subjects
Abstract:
... The aim of this research was to determine brain, cerebral hemispheres and cerebellum volume and volume ratios by using stereological methods and investigate morphological differences between female and male New Zealand rabbits. The study was applied on 14‐month old (10 male and 10 female) New Zealand rabbits. The materials removed from the cavum cranii using dorsal approach. After following routin ...
DOI:
10.1111/ahe.12489

19. Effect of oral administration of docohexanoic acid on anemia and inflammation in hemodialysis patients: A randomized controlled clinical trial

Author:
Mar Ruperto; Nuria Rodríguez-Mendiola; Martha Díaz-Domínguez; Sara Giménez-Moyano; M. Laura García-Bermejo; Milagros Fernández-Lucas
Source:
Clinical nutrition ESPEN 2021 v.41 pp. 129-135
ISSN:
2405-4577
Subject:
normal values,   etc   ; C-reactive protein; administrative management; adverse effects; anemia; biomarkers; blood serum; clinical nutrition; erythropoietin; hemodialysis; hemoglobin; homocysteine; inflammation; laboratories; men; mortality; oral administration; patients; regression analysis;     Show all 19 Subjects
Abstract:
... Docohexanoic acid (DHA), a dietary n-3 polyunsaturated fatty-acid omega-3 (n-3, PUFA), showed potential beneficial effects in reducing all-cause mortality in hemodialysis (HD) patients. This randomized trial aimed to analyze whether DHA supplementation was a modulator of erythropoietin (EPO) response and inflammation in hemodialysis (HD) patients.In this controlled clinical trial, 52 HD patients w ...
DOI:
10.1016/j.clnesp.2020.12.004

20. Determination of carcinoembryonic antigen as a tumor marker using a novel graphene-based label-free electrochemical immunosensor

Author:
Maryam Jozghorbani; Mojtaba Fathi; Sayed Habib Kazemi; Navid Alinejadian
Source:
Analytical biochemistry 2021 v.613 pp. 114017
ISSN:
0003-2697
Subject:
normal values,   etc   ; antibodies; antigen-antibody complex; antigens; behavior; biochemistry; blood serum; detection; dielectric spectroscopy; electrochemistry; electrodes; enzyme-linked immunosorbent assay; graphene; graphene oxide; humans; immunosensors; neoplasms; screening; voltammetry;     Show all 19 Subjects
Abstract:
... In this work, a simple label-free electrochemical immunosensor for the detection of carcinoembryonic antigen (CEA) was developed. At first, the GC electrode was coated with partially reduced graphene oxide (rGO) to form a platform to bind the antibody. After activating the carboxyl groups of rGO through the EDC/NHS linker, the electrode surface was covered with the antibody. Then, the electrochemi ...
DOI:
10.1016/j.ab.2020.114017