Biological Synthesis of Silver Nanoparticles by Cell-Free Extract of Spirulina platensis by Gaurav Sharma, Nakuleshwar Dut Jasuja, Manoj Kumar, Mohammad Irfan Ali

“…The present study explores biological synthesis of silver nanoparticles (AgNPs) using the cell-free extract of Spirulina platensis. Biosynthesised AgNPs were characterised by UV-Vis spectroscopy, SEM, TEM, and FTIR analysis and finally evaluated for antibacterial activity. …”
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Chattering-Free Sliding-Mode Control for Electromechanical Actuator with Backlash Nonlinearity by Dongqi Ma, Hui Lin, Bingqiang Li

“…Considering the backlash nonlinearity and parameter time-varying characteristics in electromechanical actuators, a chattering-free sliding-mode control strategy is proposed in this paper to regulate the rudder angle and suppress unknown external disturbances. …”
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Consumer Preferences in Developing Derivative Product of Gluten Free Bread Cookly by Thania Usamah Balweel, Anny Ratnawati, Ani Nuraisyah

“…Background: Cookly is a bread manufacturer that uses cassava as the main ingredient to produce gluten-free products. Cookly requires innovative development of derived products that cater to consumer needs. …”
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High Quality–Factor All–Dielectric Metacavity for Label–Free Biosensing by Yuqiao Zheng, Jiacheng Sun, Yaqing Ma, Hongyong Zhang, Zhen Cui, Giannis G. Paschos, Xixi Song, Ying Tao, Pavlos Savvidis, Wei Kong, Liaoyong Wen, Sumin Bian, Mohamad Sawan

“…Moreover, the metacavity biosensor achieves high surface sensitivity, together with a detection‐limit of 119 viral copies mL−1 for label‐free severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) pseudovirus sensing, revealing remarkable performance in both bulk and surface sensing.…”
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Solutions of the Force-Free Duffing-van der Pol Oscillator Equation by Najeeb Alam Khan, Muhammad Jamil, Syed Anwar Ali, Nadeem Alam Khan

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Cosmic Reionization on Computers: The Evolution of the Ionizing Background and Mean Free Path by Jiawen Fan, Huanqing Chen, Camille Avestruz, Affan Khadir

“…Observations of the end stages of reionization indicate that at z  ≈ 5–6, the ionizing background is not uniform and the mean free path (MFP) changes drastically. As the MFP is closely related to the distribution of Lyman-limit systems (LLSs) and damped Ly α absorbers, it is important to understand them. …”
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The Introduction of Open and Free Academic Courses in Conservation of Cultural Heritage in Greece by Anna Karatzani, Alexandros Tagoulis, Vasilike Argyropoulos, Athina Alexopoulou, Stamatis Boyatzis, Maria Chatzidaki

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Inversion Free Algorithms for Computing the Principal Square Root of a Matrix by Nicholas Assimakis, Maria Adam

“…The proposed inversion free iterative algorithms are based on the Schulz iteration or the Bernoulli substitution as a special case of the continuous time Riccati equation. …”
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AGRICULTURE AS A UNIFER OF SECURITY AND DEVELOPMENT IN THE FACE OF FREE MARKET CHALLENGES by Krzysztof PRENDECKI

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Socket Preservation Using Platelet-Rich Fibrin and Free Gingival Grafts by Haya Hesham Abdel-Latif Afifi, Shaimaa Saieed Nasr, Munerah Saleh BinShabaib, Shatha Subhi Alharthi, Mona Shoeib

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Three years later: Italy and the free movement of new EU workers by Roberta Nunin

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Circulating Visfatin in Hypothyroidism Is Associated with Free Thyroid Hormones and Antithyroperoxidase Antibodies by Nadia Sawicka-Gutaj, Ariadna Zybek-Kocik, Aleksandra Klimowicz, Michał Kloska, Dorota Mańkowska-Wierzbicka, Jerzy Sowiński, Marek Ruchała

“…Fasting blood samples were taken for visfatin, TSH, free thyroxine (FT4), free triiodothyronine (FT3), antithyroperoxidase antibodies (TPOAb), antithyroglobulin antibodies (TgAb), glucose, and insulin levels. …”
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Variational analysis for simulating free-surface flows in a porous medium by Shabbir Ahmed, Charles Collins

“…A variational formulation has been developed to solve a parabolic partial differential equation describing free-surface flows in a porous medium. The variational finite element method is used to obtain a discrete form of equations for a two-dimensional domain. …”
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Microstructure and properties of silver based cadmium free electrical contact materials by Talijan N., Ćosović V., Stajić-Trošić Jasna, Grujić A., Živković Dragana, Romhanji E.

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Calculation of Free Energy Consumption in Gene Transcription with Complex Promoter Structure by Lifang Huang, Peijiang Liu, Kunwen Wen, Jianshe Yu

“…From the viewpoint of thermodynamics, gene transcription necessarily consumes free energy due to nonequilibrium processes. On the other hand, regulatory molecules present on the core promoter of a gene interact often in a dynamic, highly combinatorial, and possibly energy-dependent manner, leading to a complex promoter structure. …”
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European Experience in Regulating Human Right to Free Secondary Legal Aid by P. Valko

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Human-Structure Dynamic Interaction during Short-Distance Free Falls by E. Shahabpoor, A. Pavic

“…Based on observations from a set of pediatric head-first free fall tests, the present paper shows that the dynamics of the grounded force plate are not always negligible when doing fall test in a laboratory setting. …”
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Potential Impact of the Free Trade Area of the Americas on the U.S. Sugarcane Industry by José Alvarez

“…Many bilateral and multilateral agreements have been signed in the past few years and others are under negotiation. The Free Trade Area of the Americas (FTAA) is currently being negotiated. …”
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Functionally Graded Materials: An Overview of Stability, Buckling, and Free Vibration Analysis by Ning Zhang, Tahir Khan, Haomin Guo, Shaoshuai Shi, Wei Zhong, Weiwei Zhang

“…This paper aims to present an overview of the existing literature on stability, buckling, and free vibration analysis of FGM carried out by numerous authors in the past decade. …”
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Potential Impact of the Free Trade Area of the Americas on the U.S. Sugarcane Industry by José Alvarez

“…Many bilateral and multilateral agreements have been signed in the past few years and others are under negotiation. The Free Trade Area of the Americas (FTAA) is currently being negotiated. …”
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