Rapid Purification of Endotoxin-Free RTX Toxins by Ondrej Stanek, Jiri Masin, Radim Osicka, David Jurnecka, Adriana Osickova, Peter Sebo

“…Mimicking this process, the RTX proteins are solubilized from inclusion bodies with buffered 8 M urea, bound onto a suitable chromatographic medium under denaturing conditions and the contaminating LPS is removed through extensive on-column washes with buffers containing 6 to 8 M urea and 1% Triton X-100 or Triton X-114. …”
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Education for a healthy lifestyle in free time by Edyta Wolter

Subjects: “…free time…”
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Free vibration analysis of functionally graded beams by Stanisław Kukla, Jowita Rychlewska

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A Discretionary Case for Preservationism about Free Will by Kelly McCormick

Subjects: “…Free Will…”
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The Status of Empty Heads in Free Relatives in LSA by بثينة شاهين

“… This paper examines the structure of free relative clauses in Lattakian Syrian Arabic, in particular the status of the head. …”
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Challenges and opportunities in free-standing supercapacitors research by Kenneth G. Latham, Anjali Achazhiyath Edathil, Babak Rezaei, Sihui Liu, Sang Nguyen, Stephan Sylvest Keller, Felice Torrisi, Emile S. Greenhalgh, Maria‐Magdalena Titirici

“…In this Perspective, we summarize the recent progress on free-standing supercapacitors from new methods to create free-standing electrodes to novel applications for these devices, together with a detailed discussion and analysis on their electrochemical performance and physicochemical and mechanical properties. …”
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Three-Dimensional Device-Free Localization for Vehicle by Manyi Wang, Jiaxing Yang, Binghua Huang, Yuan Yang, Yadong Xu

Subjects: “…device-free localization…”
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Free electron gas in cavity quantum electrodynamics by Vasil Rokaj, Michael Ruggenthaler, Florian G. Eich, Angel Rubio

“…To fill this gap we revisit Sommerfeld's theory of the free electron gas in cavity quantum electrodynamics. …”
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Opportunities for Nanomaterials in Stretchable and Free‐Form Displays by Yeageun Lee, Weilin Guan, Ezekiel Y. Hsieh, SungWoo Nam

Subjects: “…free-form displays…”
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Requirements for the transfer of lead-free piezoceramics into application by Jurij Koruza, Andrew J. Bell, Till Frömling, Kyle G. Webber, Ke Wang, Jürgen Rödel

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Reference ranges for free calcium in venous serum by Randi Jensen, Lena Løfblad, Arne Åsberg

Subjects: “…free calcium…”
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HARDENING OF CASTINGS AT FREE FORMING OF INTERNAL SURFACE by E. I. Marukovich, V. F. Bevza, V. P. Grusha

“…The reasons of arising of the hollow castings polythickness at free forming of internal surface are investigated. …”
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The New Challenges of Free Time in the Future Society by Kaiyan Da

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Evaluation of the labeling of lactose-free dairy products by Eduarda Rodrigues Monteiro, Aline Tiecher

“…Therefore, the objective of this study was to analyze the information contained in the labels of lactose-free dairy products against the main food laws. Labels of different lactose-free dairy products were analyzed, such as UHT milk, milk cream, condensed milk, yogurt, dairy drink, mozzarella cheese, Minas Frescal cheese, cream cheese, milk fudge, and ricotta, totaling 37 products, commercialized in the cities of Itaqui, RS and Francisco Beltrão, PR, from September 2020 to September 2021. …”
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Channel Pruning Method for Anchor-Free Detector by RAN Mengying, YANG Wenzhu, YIN Qunjie

Subjects: “…anchor-free; object detector; attention module; channel pruning…”
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Label-free optical biosensors in the pandemic era by Nava Giovanni, Zanchetta Giuliano, Giavazzi Fabio, Buscaglia Marco

“…In this review, we focus on emerging innovation opportunities conveyed by label-free optical biosensors. We review the most recent innovations in label-free optical biosensor technology in consideration of their competitive potential in selected application areas. …”
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Ancilla-free continuous-variable SWAP test by T. J. Volkoff, Yiğit Subaşı

“…We propose a continuous-variable (CV) SWAP test that requires no ancilla register, thereby generalizing the ancilla-free SWAP test for qubits. In this ancilla-free CV SWAP test, the computational basis measurement is replaced by photon number-resolving measurement, and we calculate an upper bound on the error of the overlap estimate obtained from a finite Fock cutoff in the detector. …”
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Why cannot Taiwan be COVID-19 free? by Tyng-Yuan Jang

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The dimension-free estimate for the truncated maximal operator by Nie Xudong, Wang Panwang

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A New Characterization of Unichord-Free Graphs by McKee Terry A.

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