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Journal articles on the topic 'DW1000'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Yang, JingYi, and Ming Yan. "Implementation of UWB indoor location and distance measurement based on TOF algorithm." MATEC Web of Conferences 173 (2018): 03018. http://dx.doi.org/10.1051/matecconf/201817303018.

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In order to achieve indoor positioning, based on the distance positioning algorithm is essential, it designs a company using DecaWave DW1000 chip and STM32 embedded control chip using the TOF algorithm and ranging system, indoor location in wireless sensor network. The whole system is divided into hardware and software. The hardware part includes anchor nodes and node labels, set up node using DW1000 chip and STM32 chip combination, the software using C language to write the STM32 location algorithm and control information controller, complete data acquisition, transmission and processing functions, in order to get the node label and the anchor node distance.

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2

Cimdins, Marco, Sven Ole Schmidt, and Horst Hellbrück. "MAMPI-UWB—Multipath-Assisted Device-Free Localization with Magnitude and Phase Information with UWB Transceivers." Sensors 20, no. 24 (December 10, 2020): 7090. http://dx.doi.org/10.3390/s20247090.

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In this paper, we propose a multipath-assisted device-free localization (DFL) system that includes magnitude and phase information (MAMPI). The DFL system employs ultra-wideband (UWB) channel impulse response (CIR) measurements, enabling the extraction of several multipath components (MPCs) and thereby benefits from multipath propagation. We propose a radio propagation model that calculates the effect on the received signal based on the position of a person within a target area. Additionally, we propose a validated error model for the measurements and explain the creation of different feature vectors and extraction of the MPCs from Decawave DW1000 CIR measurements. We evaluate the system via simulations of the position error probability and a measurement setup in an indoor scenario. We compare the performance of MAMPI to a conventional DFL system based on four sensor nodes that measures radio signal strength values. The combination of the magnitude and phase differences for the feature vectors results in a position error probability that is comparable to a conventional system but requires only two sensor nodes.

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3

Van Baelen, Dries, Nicola Macoir, Quinten Van den Brande, Eli De Poorter, Sam Lemey, Jo Verhaevert, and Hendrik Rogier. "Fully Flexible Textile Antenna-Backed Sensor Node for Body-Worn UWB Localization." Sensors 21, no. 5 (February 26, 2021): 1641. http://dx.doi.org/10.3390/s21051641.

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A mechanically flexible textile antenna-backed sensor node is designed and manufactured, providing accurate personal localization functionality by application of Decawave’s DW1000 Impulse Radio Ultra-Wideband (IR-UWB) Integrated Circuit (IC). All components are mounted on a flexible polyimide foil, which is integrated on the backplane of a wearable cavity-backed slot antenna designed for IR-UWB localization in Channels 2 and 3 of the IEEE 802.15.4-2011 standard (3744 MHz–4742.4 MHz). The textile antenna’s radiation pattern is optimized to mitigate body effects and to minimize absorption by body tissues. Furthermore, its time-domain characteristics are measured to be adequate for localization. By combining the antenna and the bendable Printed Circuit Board (PCB), a mechanically supple sensor system is realized, for which the performance is validated by examining it as a node used in a complete localization system. This shows that six nodes around the body must be deployed to provide system coverage in all directions around the wearer. Even without using sleep mode functionalities, the measurements indicate that the system’s autonomy is 13.3 h on a 5 V 200 mAh battery. Hence, this system acts as a proof of concept for the joining of localization electronics and other sensors with a full-textile antenna into a mechanically flexible sensor system.

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Sakr, M., A. Masiero, and N. El-Sheimy. "EVALUATION OF DYNAMIC AD-HOC UWB INDOOR POSITIONING SYSTEM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-1 (September 26, 2018): 379–85. http://dx.doi.org/10.5194/isprs-archives-xlii-1-379-2018.

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<p><strong>Abstract.</strong> Ultra-wideband (UWB) technology has witnessed tremendous development and advancement in the past few years. Currently available UWB transceivers can provide high-precision time-of-flight measurements which corresponds to range measurements with theoretical accuracy of few centimetres. Position estimation using range measurement is determined by measuring the ranges from a rover or a dynamic node, to a set of anchor points with known positions. However, building a flexible and accurate indoor positioning system requires more than just accurate range measurements. The performance of indoor positioning system is affected by the number and the configuration of the anchor points used, along with the accuracy of the anchor positions.</p><p>This paper introduces LocSpeck, a dynamic ad-hoc positioning system based on the DW1000 UWB transceiver from Decawave. LocSpeck is composed of a set of identical nodes communicating on a common RF channel, forming a fully or partially connected network where the positioning algorithm run on each node. Each LocSpeck node could act as an anchor or a rover, and the role could change dynamically during the same session. The number of nodes in the network could change dynamically, since the firmware of LocSpeck supports adding and removing nodes on-the-fly. The paper compares the performance of the LocSpeck system with commercially available off-the-shelf UWB positioning system. Different operating scenarios are considered when evaluating the performance of the system, including cases where collaboration between the two systems is considered.</p>

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Sakr, Mostafa, Andrea Masiero, and Naser El-Sheimy. "LocSpeck: A Collaborative and Distributed Positioning System for Asymmetric Nodes Based on UWB Ad-Hoc Network and Wi-Fi Fingerprinting." Sensors 20, no. 1 (December 21, 2019): 78. http://dx.doi.org/10.3390/s20010078.

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This paper presents LocSpeck, a collaborative and distributed indoor positioning system for dynamic nodes connected using an ad-hoc network, based on inter-node relative range measurements and Wi-Fi fingerprinting. The proposed system operates using peer-to-peer range measurements and does not need ultra-wideband (UWB) fixed anchor, nor it needs a predefined network topology. The nodes could be asymmetric in terms of the available sensors onboard, the computational resources, and the power capacity. This asymmetry adversely affects the positioning performance of the weaker nodes. Collaboration between different nodes is achieved through a distributed estimator without the need of a single centralized computing element. The ranging measurement component of the system is based on the DW1000 UWB transceiver chip from Decawave, which is attached to a set of smartphones equipped with asymmetric sensors. The distributed positioning filter fuses, locally on each node, the relative range measurements, the reading from the internal sensors, and the Wi-Fi received signal strength indicator (RSSI) readings to obtain an estimate of the position of each node. The described system does not depend on fixed UWB anchors and supports online addition and removal of nodes and dynamic node role assignment, either as an anchor or as a rover. The performance of the system is evaluated by real-world test scenarios using a set of four smartphones navigating an indoor environment on foot. The performance is compared to that of a commercial UWB-based system. The results presented in this paper show that weak mobile nodes, in terms of available positioning sensors, can benefit from collaboration with other nearby nodes.

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6

Van Herbruggen, Ben, Bart Jooris, Jen Rossey, Matteo Ridolfi, Nicola Macoir, Quinten Van den Brande, Sam Lemey, and Eli De Poorter. "Wi-PoS: A Low-Cost, Open Source Ultra-Wideband (UWB) Hardware Platform with Long Range Sub-GHz Backbone." Sensors 19, no. 7 (March 30, 2019): 1548. http://dx.doi.org/10.3390/s19071548.

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Ultra-wideband (UWB) localization is one of the most promising approaches for indoor localization due to its accurate positioning capabilities, immunity against multipath fading, and excellent resilience against narrowband interference. However, UWB researchers are currently limited by the small amount of feasible open source hardware that is publicly available. We developed a new open source hardware platform, Wi-PoS, for precise UWB localization based on Decawave’s DW1000 UWB transceiver with several unique features: support of both long-range sub-GHz and 2.4 GHz back-end communication between nodes, flexible interfacing with external UWB antennas, and an easy implementation of the MAC layer with the Time-Annotated Instruction Set Computer (TAISC) framework. Both hardware and software are open source and all parameters of the UWB ranging can be adjusted, calibrated, and analyzed. This paper explains the main specifications of the hardware platform, illustrates design decisions, and evaluates the performance of the board in terms of range, accuracy, and energy consumption. The accuracy of the ranging system was below 10 cm in an indoor lab environment at distances up to 5 m, and accuracy smaller than 5 cm was obtained at 50 and 75 m in an outdoor environment. A theoretical model was derived for predicting the path loss and the influence of the most important ground reflection. At the same time, the average energy consumption of the hardware was very low with only 81 mA for a tag node and 63 mA for the active anchor nodes, permitting the system to run for several days on a mobile battery pack and allowing easy and fast deployment on sites without an accessible power supply or backbone network. The UWB hardware platform demonstrated flexibility, easy installation, and low power consumption.

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7

Sheikh, Tahir, Zahoor Baba, Sadaf Iqbal, Basharat Hamid, Fehim J. Wani, M. Anwar Bhat, and Sheikh Suhail. "Unveiling the Efficiency of Psychrophillic Aporrectodea caliginosa in Deciphering the Nutrients from Dalweed and Cow Manure with Bio-Optimization of Coprolites." Sustainability 13, no. 10 (May 11, 2021): 5338. http://dx.doi.org/10.3390/su13105338.

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There is an immense demand for vermicomposting employing psychrophilic vermiculture (Aporrectodea caliginosa) for management of wastes under the Himalayan ecosystem. Dalweed (weeds from the world-famous urban Dal Lake) and cow manure (CM) are cheaply and abundantly available bio resources in Kashmir valley. Dalweed (DW), disposed of in the heart of the city, ascribes unpleasant effects on tourism and the natural ecosystem. Initial substrate mixtures of DW and CM with different ratios (CM100, DW100, CM80:DW20, CM60:DW40, CM40:DW60 and CM20:DW80) and castings harvested were analyzed for the following parameters: pH, TOC, TN, NO3- P, K, Fe, Zn, C:N, C:P, and C:S ratio. The results of a 56day study revealed in consistency and disparity towards the bio-optimization of coprolites depending upon the type of waste residue and mixture ratio used. Treatments with medium to low dalweed residues (CM60:DW40 followed by CM80:DW20) were found to be optimum and significantly primed chemical properties of castings using A. caligenosa. C:N, C:P, and C:S ratios showed a non-linear response with maximum decrease in C:N ratio by 35%, C:P ratio by 38% in CM100, and C:S ratio by 67% in DW100. Humification ratio, humification index, and percent humic acids were changed across all the treatments with the highest respective values of 21.33 ± 1.05, 11.33 ± 0.76, and 47.83 ± 0.76 for CM60:DW40. Results also showed that the earthworm population and biomass significantly increased with the highest respective increments of 57.53% and 74.88% in CM60:DW40 over initial values. Moreover, the highest number of cocoons (95.67 ± 1.17) were recorded within CM60:DW40 and the lowest in the control (43.33 ± 1.53). Dehydrogenase and fluorescein diacetate activities were inconsistent with the highest in CM40:DW60 (64.64%) and CM20:DW80 (63.54%) respectively over the initial substrates, while highest urease activity (74.40%) was observed from CM100. The results highlight the role of A. caliginosa in sustainable transformation of CM and DW with insightful, beneficial, and priming impacts on castings for its agronomic value.

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8

Xu, Xu, Wei Wang, Zhengyu Wang, Jianlu Lv, Xiaoju Xu, Jiawen Xu, Juanzhen Yang, et al. "DW14006 as a Direct AMPKα Activator Ameliorates Diabetic Peripheral Neuropathy in Mice." Diabetes 69, no. 9 (July 9, 2020): 1974–88. http://dx.doi.org/10.2337/db19-1084.

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9

Sheik, GouseBasha, AroobAbdullah Alhumaidy, AliIsmail Ali Abdel Raheim, ZeyadAbdullah Alzeyadi, and MohammedIbrahim AlGhonaim. "Taxonomic characterizations of soil Streptomyces cavourensis DW102 and its activity against fungal pathogens." Journal of Pharmacy And Bioallied Sciences 12, no. 4 (2020): 462. http://dx.doi.org/10.4103/jpbs.jpbs_304_20.

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10

Lv, Jianlu, Wei Wang, Xialin Zhu, Xiaoju Xu, Qiuying Yan, Jian Lu, Xiaofan Shi, et al. "DW14006 as a direct AMPKα1 activator improves pathology of AD model mice by regulating microglial phagocytosis and neuroinflammation." Brain, Behavior, and Immunity 90 (November 2020): 55–69. http://dx.doi.org/10.1016/j.bbi.2020.07.041.

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11

Li, Meng-yuan, Yong-cong Lv, Lin-jiang Tong, Ting Peng, Rong Qu, Tao Zhang, Yi-ming Sun, et al. "DW10075, a novel selective and small-molecule inhibitor of VEGFR, exhibits antitumor activities both in vitro and in vivo." Acta Pharmacologica Sinica 37, no. 3 (January 25, 2016): 398–407. http://dx.doi.org/10.1038/aps.2015.117.

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12

Sheik, Gouse Basha, Ali Ismail Ali Abdel Raheim, Zeyad Abdullah Alzeyadi, and Mohammed Ibrahim AlGhonaim. "Extracellular Synthesis, Characterization and Antibacterial Activity of Silver Nanoparticles by a Potent Isolate Streptomyces sp. DW102." Asian Journal of Biological and Life sciences 8, no. 3 (January 9, 2020): 89–96. http://dx.doi.org/10.5530/ajbls.2019.8.15.

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13

Müller, Oliver, Marina Rejkuba, and Helmut Jerjen. "Distances from the tip of the red giant branch to the dwarf galaxies dw1335-29 and dw1340-30 in the Centaurus group." Astronomy & Astrophysics 615 (July 2018): A96. http://dx.doi.org/10.1051/0004-6361/201732455.

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Context. The abundance and spatial distribution of dwarf galaxies are excellent empirical benchmarks against which to test models of structure formation on small scales. The nearby Centaurus group, with its two subgroups centered on Cen A and M 83, stands out as an important alternative to the Local Group for scrutinizing cosmological model predictions in a group of galaxies context. Aims. We have obtained deep optical images of three recently discovered M 83 satellite galaxy candidates with the FORS2 instrument mounted on the Very Large Telescope. We aim to confirm their group membership and study their stellar population. Methods. Deep V I-band photometry was used to resolve the brightest stars in our targets. Artificial star tests are performed to estimate the completeness and uncertainties of the photometry. The color-magnitude diagrams reveal the red giant branch (RGB) stars, allowing us to use the Sobel edge detection method to measure the magnitude of the RGB tip and thus derive distances and group membership for our targets. The mean metallicity of the dwarf galaxies were further determined by fitting BASTI model isochrones to the mean RGB locus. Results. We confirm the two candidates, dw1335-29 and dw1340-30, to be dwarf satellites of the M 83 subgroup, with estimated distances of 5.03 ± 0.24 Mpc and 5.06 ± 0.24 Mpc, respectively. Their respective mean metallicities of ⟨[Fe/H]⟩ = −1.79 ± 0.4 and ⟨[Fe/H]⟩ = −2.27 ± 0.4 are consistent with the metallicity–luminosity relation for dwarf galaxies. The third candidate, dw1325-33, could not be resolved into stars due to insufficiently deep images, implying its distance must be larger than 5.3 Mpc. Using the two newly derived distances we assess the spatial distribution of the galaxies in the M 83 subgroup and discuss a potential plane-of-satellites around M 83.

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14

AMAR, A., N. RUBINSTEIN, S. HACHAM-ZADEH, O. COHEN, T. COHEN, and C. BRAUTBAR. "Is predisposition to pemphigus vulgaris in Jewish patients mediated by HLA-Dw10 and DR4?" Tissue Antigens 23, no. 1 (December 11, 2008): 17–22. http://dx.doi.org/10.1111/j.1399-0039.1984.tb00003.x.

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15

周, 光炎. "上海人群HLA-Dw4,Dw10和HLA-DR9呈连锁不平衡." Chinese Science Bulletin 35, no. 22 (November 1, 1990): 1747–50. http://dx.doi.org/10.1360/csb1990-35-22-1747.

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16

Strong, D. T., P. W. G. Sale, and K. R. Helyar. "The influence of the soil matrix on nitrogen mineralisation and nitrification. I. Spatial variation and a hierarchy of soil properties." Soil Research 36, no. 3 (1998): 429. http://dx.doi.org/10.1071/s97102.

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Natural heterogeneity of soil properties was used to explore their influence on nitrogen (N) mineralisation and nitrification in undisturbed small soil volumes (soil cells; c. 1 · 7 cm3 ) sampled from a small field plot (2 m by 3 m). Soil cells (840) were randomly ascribed to 1 of 6 treatments in which soils were retained continuously moist (M10 and M30 treatments) and amended with organic N from clover (Cl10 and Cl30 treatments), dried and rewetted (DW10), or treated with urea (Ur10) (subscripts indicate soil incubation at matric potential - 10 or - 30 kPa). After 20 days of incubation at 24C, each soil cell was analysed for NO-3 -N, NH + 4 -N, pH, bulk density (BD), volumetric water content (θv), water content at - 490 kPa (θv490), and pH buffer capacity (pHBC). On 25 soil cells from each treatment, % clay, % silt, % sand, total N (% N), organic carbon (% C), and 7 cations and anions were also determined. Net N mineralisation and net nitrification occurred in all treatments, and the total mineral N at the end of the incubation was 497, 81, 73, 31, 27, and 31 µg N/g in the Ur10 Cl10, Cl30, M10, M30, and DW10 treatments, respectively. Net N mineralisation in the M30 treatment was 84% of that in the M10 treatment, and net N mineralisation in the Cl30 treatment was 86% of that in the Cl10 treatment. Fluctuations in soil pH varied markedly between treatments and over time, and it was apparent that alkaline processes were occurring in all soil cells. The heterogeneity between soil samples was substantial for all of the soil variables. Soil variables were classified in a hierarchy from the least to the most fundamental based on their stability through time. This ranking provides a conceptual tool for understanding interrelationships between soil properties and for interpreting results of regression analyses. The sampling approach adopted in this study was designed to harness the natural heterogeneity of soil properties in the small field site while keeping other properties and environmental factors, that usually vary over larger distances, constant. Both the extent of heterogeneity of soil properties and the nature of their correlations with NO-3 -N suggested that this technique would be useful in the exploration of how soil properties influence N mineralisation and nitrification.

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17

Taneja, Veena, Neelam Taneja, Marshall Behrens, Suchong Pan, Tad Trejo, Marie Griffiths, Harvinder Luthra, and Chella S. David. "HLA-DRB1*0402 (DW10) Transgene Protects Collagen- Induced Arthritis-Susceptible H2Aq and DRB1*0401 (DW4) Transgenic Mice from Arthritis." Journal of Immunology 171, no. 8 (October 6, 2003): 4431–38. http://dx.doi.org/10.4049/jimmunol.171.8.4431.

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18

Stepien, Zbigniew, and Wojciech Krasodomski. "Effect of trace zinc amounts introduced in various chemical structures in diesel fuel on coke deposits of fuel injectors of a CI engine." International Journal of Engine Research 21, no. 5 (May 28, 2018): 755–65. http://dx.doi.org/10.1177/1468087418777175.

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The goal of the article was to carry out a comparative research on the propensity of a standard-class commercial diesel fuel, consistent with the requirements of the EN-590 standard, with zinc catalysts of various chemical structures introduced, to form deposits on the tips of fuel injectors of a compression ignition engine. Studies on structures of zinc carboxylic salts type dissolved in the fuel and dispersed zinc oxides/hydroxides type were planned. The influence of zinc dialkyldithiophosphates (ZDDP) on the deposit formation was not investigated because of their complex structure and inability to evaluate the additional impact of phosphates(V) on the deposit formation process. Studies of pre-prepared fuel samples without zinc and with various zinc contents of various origins, which may constitute trace impurities of diesel fuel, were carried out using a standardised engine test acc. to the general European CEC F-98-08 procedure, in which the amount of the engine power decrease was adopted as an evaluation criterion for the size of the deposits formed on the tips of fuel injectors. Also, an analysis of elemental composition of the coke deposits formed on the tips of fuel injectors of a Peugeot DW10B engine was carried out by the X-ray fluorescence method. In the results of the studies carried out, it was found that in the case of commercial diesel fuel used for the tests, none of the zinc compounds assumed as deposits precursors had a significant influence on the chemistry of the deposit formation process during combustion of the diesel fuel in the engine. The deposits being formed are characterised by practically the same chemical nature. However, differences were found in the case of amounts of deposits forming on the tips of the fuel injectors and their growth rate during the test.

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19

Laptenok, Sergey P., Andras Lukacs, Richard Brust, Allison Haigney, Agnieszka Gil, Michael Towrie, Gregory M. Greetham, Peter J. Tonge, and Stephen R. Meech. "Electron transfer quenching in light adapted and mutant forms of the AppA BLUF domain." Faraday Discussions 177 (2015): 293–311. http://dx.doi.org/10.1039/c4fd00189c.

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The Blue Light Using Flavin (BLUF) domain proteins are an important family of photoreceptors controlling a range of responses in a wide variety of organisms. The details of the primary photochemical mechanism, by which light absorption in the isoalloxazine ring of the flavin is converted into a structure change to form the signalling state of the protein, is unresolved. In this work we apply ultrafast time resolved infra-red (TRIR) spectroscopy to investigate the primary photophysics of the BLUF domain of the protein AppA (AppA_BLUF) a light activated antirepressor. Here a number of mutations at Y21 and W104 in AppA_BLUF are investigated. The Y21 mutants are known to be photoinactive, while W104 mutants show the characteristic spectral red-shift associated with BLUF domain activity. Using TRIR we observed separately the decay of the excited state and the recovery of the ground state. In both cases the kinetics are found to be non-single exponential for all the proteins studied, suggesting a range of ground state structures. In the Y21 mutants an intermediate state was also observed, assigned to formation of the radical of the isoalloxazine (flavin) ring. The electron donor is the W104 residue. In contrast, no radical intermediates were detected in the studies of the photoactive dark adapted proteins, dAppA_BLUF and the dW104 mutants, suggesting a structure change in the Y21 mutants which favours W104 to isoalloxazine electron transfer. In contrast, in the light adapted form of the proteins (lAppA_BLUF, lW104) a radical intermediate was detected and the kinetics were greatly accelerated. In this case the electron donor was Y21 and major structural changes are associated with the enhanced quenching. In AppA_BLUF and the seven mutants studied radical intermediates are readily observed by TRIR spectroscopy, but there is no correlation with photoactivity. This suggests that if a charge separated state has a role in the BLUF photocycle it is only as a very short lived intermediate.

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20

Bidwell, Jeffrey L., Elizabeth A. Bidwell, David M. Sansom, Peter T. Klouda, and Benjamin A. Bradley. "The origin of HLA-DR“Br”: Exon 2 nucleotide sequence implicates possible gene conversion of DR1 by DR4-Dw10, DR5, or DRw6-Dw18." Human Immunology 26, no. 3 (November 1989): 191–97. http://dx.doi.org/10.1016/0198-8859(89)90038-4.

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21

Barber, Linda D., Vineeta Bal, Jonathan R. Lamb, Robyn E. O'Hehir, Janet Yendle, Richard J. T. Hancock, and Robert I. Lechler. "Contribution of T-cell receptor-contacting and peptide-binding residues of the class II molecule HLA-DR4 Dw10 to serologic and antigen-specific T-cell recognition." Human Immunology 32, no. 2 (October 1991): 110–18. http://dx.doi.org/10.1016/0198-8859(91)90107-k.

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22

Pawelec, G., H. Max, T. Halder, O. Bruserud, A. Merl, P. da Silva, and H. Kalbacher. "BCR/ABL leukemia oncogene fusion peptides selectively bind to certain HLA-DR alleles and can be recognized by T cells found at low frequency in the repertoire of normal donors." Blood 88, no. 6 (September 15, 1996): 2118–24. http://dx.doi.org/10.1182/blood.v88.6.2118.bloodjournal8862118.

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Chronic myelogenous leukemia (CML) is characterized by the t(9;22) translocation that results in chimeric genes encoding bcr/abl fusion proteins. Junction-spanning sequences represent unique tumor-specific moieties that might be exploited therapeutically. We investigate here the binding of synthetic bcr/abl peptides to various HLA-DR alleles and their recognition by T cells from normal donors and CML patients. A 23- mer b3/a2 peptide bound very strongly to isolated HLA-DRB1*1101 (Dw5) and relatively strongly to DRB1*0301 (Dw3) and DRB1*0402 (Dw10) molecules, as estimated using a competition assay. It failed to bind to several other DR alleles, including three different DR4 alleles. In contrast, a 23-mer b2/a2 peptide bound only to the DRB1*0301 (Dw3) allele. Peripheral blood mononuclear cells from normal donors were sensitized in vitro against the b3/a2 peptide. After four repetitive stimulations, T cells responding to the peptide were found at low frequency in 5 of the 11 donors tested. Three of the five were HLA- DR11+, and all three of the DR11+ donors tested were found to respond. T cells recognizing bcr/abl peptides were not identified in any of the CML patients studied, regardless of HLA type. Finally, even peptide- reactive T-cell lines from normal donors were not stimulated by native CML cells in the absence of exogenous peptide. These results show the presence of low-frequency major histocompatability complex class II- restricted bcr/abl-responses in the normal T-cell repertoire of donors with certain HLA types, but suggest that unmodified tumor cells cannot be recognized by such peptide-sensitized T cells.

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Wei, Zhen, Rui Jiang, Xing Wei, Yun-An Cheng, Lei Cheng, and Cai Wang. "Novel indoor positioning system based on ultra-wide bandwidth." Visual Computing for Industry, Biomedicine, and Art 3, no. 1 (January 7, 2020). http://dx.doi.org/10.1186/s42492-019-0038-1.

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AbstractTo tackle challenges such as interference and poor accuracy of indoor positioning systems, a novel scheme based on ultra-wide bandwidth (UWB) technology is proposed. First, we illustrate a distance measuring method between two UWB devices. Then, a Taylor series expansion algorithm is developed to detect coordinates of the mobile node using the location of anchor nodes and the distance between them. Simulation results show that the observation error under our strategy is within 15 cm, which is superior to existing algorithms. The final experimental data in the hardware system mainly composed of STM32 and DW1000 also confirms the performance of the proposed scheme.

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"Clinical Trial to Evaluate the Efficacy and Safety of 'DW1601' in Acute Bronchitis." Case Medical Research, February 7, 2020. http://dx.doi.org/10.31525/ct1-nct04260555.

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