16,272 results match your criteria efficiency recovery

Enhanced singlet oxygen production over a photocatalytic stable metal organic framework composed of porphyrin and Ag.

J Colloid Interface Sci 2021 May 18;602:300-306. Epub 2021 May 18.

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, PR China. Electronic address:

Porphyrin is an important photosensitizer for singlet oxygen (O) formation. However, porphyrin derivatives still display low efficiency and difficult recovery. In this work, an Ag-based MOFs (AgTPyP; TPyP, 5,10,15,20-tetra(4-pyridyl) porphyrin) is synthesized. Read More

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Qualitative analysis of family interactions with Iranian women with substance use disorder: from before becoming aware of addiction to consecutive relapses.

J Ethn Subst Abuse 2021 Jun 15:1-22. Epub 2021 Jun 15.

University of Tehran, Tehran, Iran.

Family is the most important social institution since birth with which the person has been in direct contact. Family relationships with children play a major role in both the tendency toward substance addiction and the withdrawal of drugs. The present study aimed to examine the form of family interactions with Iranian women with substance use disorder. Read More

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Immobilizing of palladium on melamine functionalized magnetic chitosan beads: A versatile catalyst for p-nitrophenol reduction and Suzuki reaction in aqueous medium.

Int J Biol Macromol 2021 Jun 11;184:358-368. Epub 2021 Jun 11.

Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, PR China. Electronic address:

In this study, an environmental-friendly palladium catalyst with high efficiency, magnetic, recoverability, reusability, and excellent stability was prepared and thoroughly characterized by the Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Elemental mapping, Thermogravimetric analysis (TGA) and Energy-dispersive X-ray spectroscopy (EDX). Results demonstrates that melamine provides a coordination point on the surface of chitosan microspheres, which provides a platform for the uniform distribution of palladium (II) and combines with palladium (II) firmly to avoid unnecessary leaching of nanoparticles. Besides, FeO/[email protected] microcapsules exhibited high catalytic performance in reducing p-NP in water at room temperature (150-300 s). Read More

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Evaluation of three different concentration and extraction methods for recovery efficiency of human adenovirus and human rotavirus virus A.

J Virol Methods 2021 Jun 11;295:114212. Epub 2021 Jun 11.

Botany and Microbiology Department, College of Science, King Saud University, Saudi Arabia.

Routine wastewater treatment plants (WWTPs) effluents monitoring is essential because of enteric viruses' low infectious dose beyond molecular detectability. In current study methods for concentration and extraction, inter-method compatibility and recovery efficiency of spiked human adenovirus (HAdV) and human rotavirus A (RVA) were evaluated. For virus concentration, polyethylene glycol precipitation (PEG), charged membrane-based adsorption/elution (CMAE), and glass wool-based concentration (GW) methods were used. Read More

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Simple MoS-Nanofiber Paper-Based Fluorescence Immunosensor for Point-of-Care Detection of Programmed Cell Death Protein 1.

Anal Chem 2021 Jun 14. Epub 2021 Jun 14.

Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China.

Programmed cell death protein 1 (PD-1) is one of the coinhibitory checkpoints upon T cell activation, the abnormal expression of which severely threatens host immune modulatation for chronic infection. Thus, fast and sensitive monitoring of PD-1 is of vital importance for early diagnosis and cancer treatment. The current detection methods largely based on enzyme-linked immunosorbent assay (ELISA) require time-consuming incubation and complicated washing steps. Read More

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Short-term stress responses and recovery of giant kelp (Macrocystis pyrifera, Laminariales, Phaeophyceae) juvenile sporophytes to a simulated marine heatwave and nitrate scarcity.

J Phycol 2021 Jun 14. Epub 2021 Jun 14.

Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas, Km 106 Carretera Tijuana-Ensenada, Ensenada, Baja California, México, CP, 22860.

The frequency of marine heatwaves (MHWs) is increasing due to climate change. Although seaweeds are resilient to environmental changes, an increasing body of evidence shows that rising sea surface temperatures have deleterious effects on temperate kelp species. However, information on the vulnerability of juvenile kelp to these stressors and their population stability is limited. Read More

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Food insecurity increases energetic efficiency, not food consumption: an exploratory study in European starlings.

PeerJ 2021 28;9:e11541. Epub 2021 May 28.

Population Health Sciences Institute/Centre for Behaviour and Evolution, Newcastle University, Newcastle upon Tyne, United Kingdom.

Food insecurity-defined as limited or unpredictable access to nutritionally adequate food-is associated with higher body mass in humans and birds. It is widely assumed that food insecurity-induced fattening is caused by increased food consumption, but there is little evidence supporting this in any species. We developed a novel technology for measuring foraging, food intake and body mass in small groups of aviary-housed European starlings (). Read More

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Extraction and quantification of some valuable flavonoids from pinecone of via Soxhlet and Supercritical CO extraction: a comparison study.

Chem Zvesti 2021 Jun 6:1-11. Epub 2021 Jun 6.

Department of Chemistry, Science Faculty, Gazi University, Ankara, Turkey.

In this study, the extraction of oil from pinecone of was evaluated by supercritical CO (Sc-CO) and Soxhlet extraction methods. The quercetin, rutin and kaempferol (QRK) contents of oil were analyzed one by one via HPLC. The rutin compound investigated in this study has the potential to be a drug against the COVID 19 virus. Read More

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Prevalence and Treatment Characteristics of Spastic Hypertonia on First-time Admission to Acute Inpatient Rehabilitation.

Am J Phys Med Rehabil 2021 Jun 12. Epub 2021 Jun 12.

Department of Physical Medicine & Rehabilitation, McGovern Medical School at UTHealth, Houston, Texas. Department of Physical Medicine & Rehabilitation, Penn State Health, Hershey, Pennsylvania. Department of Physical Medicine & Rehabilitation, UTHealth San Antonio, San Antonio, Texas.

Objective: Report the prevalence of spasticity and treatment patterns during first-time admission to inpatient rehabilitation following acute stroke, traumatic brain injury (TBI), and spinal cord injury (SCI).

Design: Retrospective cohort.

Methods: Review of 285 adult patients consecutively admitted to inpatient rehabilitation. Read More

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Development of radioactive tracing coupled with LC/MS-IT-TOF methodology for the discovery and identification of diaveridine metabolites in pigs.

Food Chem 2021 May 25;363:130200. Epub 2021 May 25.

National Reference Laboratory of Veterinary Drug Residues (HZAU), Huazhong Agricultural University, Wuhan, Hubei 430070, PR China; MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China; MOA Laboratory of Risk Assessment for Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei 430070, PR China. Electronic address:

We developed a sensitive and reliable method by coupling radiotracing with LC/MS-IT-TOF to identify diaveridine metabolites. Tritium-labeled diaveridine was orally administered to pigs and their organs, blood, bile, and excreta were collected. Under optimized conditions, radioactive recovery was >90% and the highest numbers of metabolites were detected. Read More

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Towards the circular economy - A pilot-scale membrane technology for the recovery of water and nutrients from secondary effluent.

Sci Total Environ 2021 Jun 10;791:148266. Epub 2021 Jun 10.

Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Norwida 4/6, 50-373 Wroclaw, Poland. Electronic address:

The concept of water reuse was proposed more than two decades ago in regions that suffered from water scarcity or relied on unpredictable water supplies. Since then, climate change, a rapidly growing global urban population, and environmental pollution have impacted sustainable water resources, driving a rise in demand for efficient wastewater reclamation technologies. According to the new Circular Economy Action Plan established by the EU, most activities that are undertaken as part of the wastewater treatment process should primarily concern the search for new technologies that use wastewater as a source of water and nutrients. Read More

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An iron-air fuel cell system towards concurrent phosphorus removal and resource recovery in the form of vivianite and energy generation in wastewater treatment: A sustainable technology regarding phosphorus.

Sci Total Environ 2021 Jun 6;791:148213. Epub 2021 Jun 6.

Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China. Electronic address:

Phosphorous (P) recovery from industrial wastewaters solves both P deficiency and P pollution problems. A sequencing batch iron-air fuel cell was set up to recover P from synthetic wastewater containing 0.6 g-P/L NaHPO. Read More

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Correction pen as a hydrophobic/lipophobic barrier plotter integrated with paper-based chips and a mini UV-torch to implement all-in-one device for determination of carbazochrome.

Anal Chim Acta 2021 Aug 24;1172:338684. Epub 2021 May 24.

Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt; Department of Analytical Chemistry for Pharmaceuticals, Course of Pharmaceutical Sciences, Graduate School of Biomedical Science, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan. Electronic address:

The design of a cheap, simple, and handy sensing system for rapid quantitation of pharmaceuticals becomes mandatory to ease drug development procedures, quality control, health care, etc. This work describes a simple, innovative, and easily manufactured paper-based device using a correction pen as a plotter for hydrophobic/lipophobic barriers and graphene quantum dots for recognition and quantification of the hemostatic drug carbazochrome, via fluorescence turn-off mechanism mediated by the inner filter effect. A smartphone-based all-in-one device fitted with an inexpensive 365 nm flashlight as a UV light source and a free image processing software was developed for rapid and reliable interpretation of the fluorescence change from the paper-based device upon introduction of the drug. Read More

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Impact of time and phosphorus application rate on phosphorus bioavailability and efficiency of secondary fertilizers recovered from municipal wastewater.

Chemosphere 2021 May 28;282:131017. Epub 2021 May 28.

Ghent University, Faculty of Bioscience Engineering, Laboratory of Analytical Chemistry and Applied Ecochemistry (Ecochem), Coupure Links 653, B Block, 6th Floor, 9000, Ghent, Belgium. Electronic address:

Demand for phosphorus (P) resources other than non-renewable P rock has driven the development of several P recovery technologies from municipal wastewater treatment and directed recovery of P into valuable fertilizers (struvite, ash, iron phosphate, etc.). Although the bioavailability of novel secondary P fertilizers has been examined in previous studies, insufficient attention has been paid to defining optimal plant growth duration and monitoring conditions to assess the dynamic changes in P. Read More

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Stability of thylakoid protein complexes and preserving photosynthetic efficiency are crucial for the successful recovery of the halophyte Cakile maritima from high salinity.

Plant Physiol Biochem 2021 May 28;166:177-190. Epub 2021 May 28.

Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, (CBBC), P. O. Box 901, 2050, Hammam-Lif, Tunisia; Department of Plant Proteomics, Institute of Plant Genetics, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany.

Plants native to extreme habitats often face changes in environmental conditions such as salinity level and water availability. In response, plants have evolved efficient mechanisms allowing them to survive or recover. In the present work, effects of high salinity and salt-stress release were studied on the halophyte Cakile maritima. Read More

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Hydrogen-rich syngas production from biomass in a steam microwave-induced plasma gasification reactor.

Bioresour Technol 2021 May 24;337:125324. Epub 2021 May 24.

Stopford Projects Ltd, The Gordon Manley Building, Lancaster University, LA1 4YQ, United Kingdom. Electronic address:

Substitution of fossil fuels by sustainable practices must be rapidly implemented to mitigate the impacts of climate change. The conversion of biomass into combustible gas is investigated in a microwave-induced plasma reactor using pure steam as the plasma working gas for the first time. The optimum results are achieved at the highest forward microwave power of 6 kW with biomass carbon conversion efficiency over 98% and complete biomass energy recovery in syngas. Read More

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Bio-electrochemically extracted nitrogen from residual resources for microbial protein production.

Bioresour Technol 2021 Jun 8;337:125353. Epub 2021 Jun 8.

Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:

Upcycling of nutrients from residual resources for producing microbial protein (MP) is an attractive method to valorize residues. In this study, we investigated bio-electrochemical methods to recover ammonia-N, for further production of MP. Reject water and digestate were used for ammonia-N recovery in microbial fuel cell (MFC) system. Read More

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Biosynthesized Silver Nanoparticles Coated Electro-Membrane Extraction of Perchlorate in Different Seafood Samples.

Biomed Chromatogr 2021 Jun 11:e5196. Epub 2021 Jun 11.

Department of Chemistry, Faculty of Science and Technology, Al-Quds University, East Jerusalem, Palestine.

In this work, a rapid and straightforward technique was developed with bio-synthesized silver nanoparticles (Ag-NPs) coated on a porous membrane which utilizes electrical potential to extract perchlorate from seafood samples. The biosynthesized Ag-NPs was well characterized by Ultraviolet-Visible Spectrophotometry (UV-Vis), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). After extraction, analyses were performed using ion chromatography (IC). Read More

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A Photoacoustic Imaging Algorithm Based on Regularized Smoothed L Norm Minimization.

Mol Imaging 2021 1;2021:6689194. Epub 2021 Jun 1.

Department of Mathematics Science, Liaocheng University, Shandong 252000, China.

The recently emerging technique of sparse reconstruction has received much attention in the field of photoacoustic imaging (PAI). Compressed sensing (CS) has large potential in efficiently reconstructing high-quality PAI images with sparse sampling signal. In this article, we propose a CS-based error-tolerant regularized smooth L0 (ReSL0) algorithm for PAI image reconstruction, which has the same computational advantages as the SL0 algorithm while having a higher degree of immunity to inaccuracy caused by noise. Read More

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SiRNA in MSC-derived exosomes silences CTGF gene for locomotor recovery in spinal cord injury rats.

Stem Cell Res Ther 2021 Jun 10;12(1):334. Epub 2021 Jun 10.

Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, No. 6 Jiefang Street, Dalian, 116001, Liaoning Province, China.

Background: How to obtain a small interfering RNA (siRNA) vector has become a moot point in recent years. Exosomes (Exo) show advantages of long survival time in vivo, high transmission efficiency, and easy penetration across the blood-spinal cord barrier, renowned as excellent carriers of bioactive substances.

Methods: We applied mesenchymal stem cell (MSC)-derived exosomes as the delivery of synthesized siRNA, which were extracted from rat bone marrow. Read More

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Bioleaching of indium from waste LCD panels by Aspergillus niger: Method optimization and mechanism analysis.

Sci Total Environ 2021 May 29;790:148151. Epub 2021 May 29.

School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.

Using Aspergillus niger (A. niger) to produce low-concentration organic acids is challenging for dissolving InO from waste LCD (liquid crystal display) panels with high toxicity. In this study, three bioleaching approaches from the general and the optimized fermentation systems were investigated respectively to compare indium recovery effects and firstly clarified its bioleaching mechanism. Read More

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Fabrication of outstanding thermal-insulating, mechanical robust and superhydrophobic PP/CNT/sorbitol derivative nanocomposite foams for efficient oil/water separation.

J Hazard Mater 2021 Jun 4;418:126295. Epub 2021 Jun 4.

Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada.

Water pollution caused by industrial oily wastewater, is world-widely concerned by both scientific and practical researches, owing to its catastrophic destruction to natural environment, which highlights the urgency of producing green and advanced separation materials. Herein, a novel approach was proposed to fabricate oil-absorbing and oil/water-separating microcellular polypropylene (PP)/carbon nanotubes (CNTs)/sorbitol nanocomposites using a simple, green, and facile microcellular foaming technology. Owning to the effectively modified crystallization via introducing CNTs/sorbitol derivatives, the ultralight and highly-reticulated PP microcellular foam was prepared with an open-cell content of 99. Read More

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Ultrasound-Engineered fabrication of immobilized molybdenum complex on Cross-Linked poly (Ionic Liquid) as a new acidic catalyst for the regioselective synthesis of pharmaceutical polysubstituted spiro compounds.

Ultrason Sonochem 2021 Jun 1;75:105614. Epub 2021 Jun 1.

Department of Chemistry, Qom Branch, Islamic Azad University, Qom, Islamic Republic of Iran.

A novel supported molybdenum complex on cross-linked poly (1-Aminopropyl-3-vinylimidazolium bromide) entrapped cobalt oxide nanoparticles has been successfully fabricated through two different procedures, i.e. ultrasound (US) irradiations (100 W, 40 kHz) and reflux. Read More

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Iron nanoparticles decorated hierarchical carbon fiber forest for the magnetic solid-phase extraction of multi-pesticide residues from water samples.

Chemosphere 2021 Jun 1;282:131058. Epub 2021 Jun 1.

Toxicokinetics Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), MG Marg, Lucknow, Uttar Pradesh, 226001, India; Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), MG Marg, Lucknow, Uttar Pradesh, 226001, India. Electronic address:

This study describes a versatile, robust and fast sample pre-concentration novel method based on chemical vapour deposition grown iron nanoparticles dispersed hierarchical carbon fiber forest (Fe-ACF/CNF) for the determination of multi-pesticide residue in water samples. This method was developed by the implementation of Fe-ACF/CNF to magnetic solid-phase extraction method (MSPE) for the adsorption of twenty-nine pesticides of various classes using gas chromatography equipped with an electron capture detector. Fe-ACF/CNF was grown via tip growth mechanism and Fe-nanoparticles are moved to the tip of CNF. Read More

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A synergy of liquid chromatography with high-resolution mass spectrometry and coagulation test for determination of direct oral anticoagulants for clinical and toxicological purposes.

Biomed Chromatogr 2021 Jun 10:e5195. Epub 2021 Jun 10.

Department of Forensic Medicine and Medical Law, Faculty of Medicine and Dentistry, Palacký University Olomouc and University Hospital Olomouc, Olomouc, Czech Republic.

Direct oral anticoagulants are an alternative to anticoagulants based on vitamin K antagonists. Monitoring of direct oral anticoagulant concentration levels is necessary in specific cases only (e.g. Read More

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Donnan Dialysis for scaling mitigation during electrochemical ammonium recovery from complex wastewater.

Water Res 2021 May 17;201:117260. Epub 2021 May 17.

Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9 8911MA Leeuwarden P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands; Environmental Technology, Wageningen University, Bornse Weilanden 9 6708 WG Wageningen P.O. Box 17, 6700 AA Wageningen, the Netherlands. Electronic address:

Inorganic scaling is often an obstacle for implementing electrodialysis systems in general and for nutrient recovery from wastewater specifically. In this work, Donnan dialysis was explored, to prevent scaling and to prolong operation of an electrochemical system for TAN (total ammonia nitrogen) recovery. An electrochemical system was operated with and without an additional Donnan dialysis cell, while being supplied with synthetic influent and real digested black water. Read More

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Ultrasonic power combined with seed materials for recovery of phosphorus from swine wastewater via struvite crystallization process.

J Environ Manage 2021 Jun 5;293:112961. Epub 2021 Jun 5.

National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization, Nanchang Hangkong University, Nanchang, 330063, China.

Recovering P via struvite crystallization is an effective way to utilize the resources in swine wastewater. At present, the main challenges of traditional struvite crystallization process are the long reaction time and insufficient removal efficiency. In this study, a novel method to promote struvite crystallization process through ultrasound (US) combined with seed materials is proposed to overcome these defects. Read More

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Photoactive Polyethylenimine-Coated Graphene Oxide Composites for Enhanced Cr(VI) Reduction and Recovery.

ACS Appl Mater Interfaces 2021 Jun 8. Epub 2021 Jun 8.

Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States.

The application of positively charged polymers is a common treatment strategy for the sorption and separation of dissolved hexavalent chromium Cr(VI). In particular, polyethylenimine (PEI) has been demonstrated as an effective polymer for Cr treatment due to abundant amine groups and cost-effectiveness. However, PEI as a photoactive polymer has not been previously explored for Cr treatment. Read More

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Improved efficiency and carrier dynamic transportation behavior in perovskite solar cells with CuInS quantum dots as hole-transport materials.

Dalton Trans 2021 Jun 8. Epub 2021 Jun 8.

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, (Wuhan University of Technology), 430070, Wuhan, China.

Inorganic quantum dot (QD)-based hole-transport materials (HTMs) have proved their potential in perovskite solar cells (PSCs). In this work, CuInS2 quantum dots (CIS QDs) were applied as HTMs for PSCs with the architecture of TiO2/Cs0.17FA0. Read More

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A mathematical programming approach for equitable COVID-19 vaccine distribution in developing countries.

Ann Oper Res 2021 Jun 3:1-34. Epub 2021 Jun 3.

School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran.

Developing countries scramble to contain and mitigate the spread of coronavirus disease 2019 (COVID-19), and world leaders demand equitable distribution of vaccines to trigger economic recovery. Although numerous strategies, including education, quarantine, and immunization, have been used to control COVID-19, the best method to curb this disease is vaccination. Due to the high demand for COVID 19 vaccine, developing countries must carefully identify and prioritize vulnerable populations and rationalize the vaccine allocation process. Read More

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