Journal articles: 'HF tags'

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Prodanoff, Zornitza Genova, Edward L. Jones, Hongmei Chi, Sherif Elfayoumy, and Cynthia Cummings. "Survey of Security Challenges in NFC and RFID for E-Health Applications." International Journal of E-Health and Medical Communications 7, no. 2 (2016): 1–13. http://dx.doi.org/10.4018/ijehmc.2016040101.

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Hospitals worldwide have implemented High Frequency (HF) Radio Frequency Identification (RFID) networks for supplies tracking in ER setting, in-patient identification, surgical instrument management, and other applications. Merging of Web, Near Filed Communication (NFC), and HF RFID technologies for their combined use in e-Health applications is a logical next step due to the wide availability of NFC-enabled smartphones. This article outlines some resulting security challenges. Tags are often compliant with multiple standards that operate in the same frequency range. For example, HF RFID tags have already been adopted for in-patient tracking, yet smartphone NFC reader apps can freely access data on those tags. While tag– or session–centered security protocols exist for some RFID standards (e.g. ISO/IEC 29167), no ISO security standard is currently available for HF RFID tags. In such systems, proper traffic characterization can lead to better understanding of operation under “normal” system state conditions and could potentially help to identify security breaches.

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Bhogal, Varun, Zornitza Genova Prodanoff, Sanjay P. Ahuja, and Kenneth Martin. "On BFSA Collision Resolution in LF, HF, and UHF RFID Networks." International Journal of Wireless Networks and Broadband Technologies 4, no. 2 (2015): 44–55. http://dx.doi.org/10.4018/ijwnbt.2015040104.

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RFID (radio frequency identification) technology has gained popularity in a number of applications. Decreased cost of hardware components along with wide adoption of international RFID standards have led to the rise of this technology. One of the major factors associated with the implementation of RFID infrastructure is the cost of tags. RFID tags operating in the low frequency spectrum are widely used because they are the least expensive, but have a small implementation range. This paper presents an analysis of RFID performance across low frequency (LF), high frequency (HF), and ultra-high frequency (UHF) environments. The authors' evaluation is theoretical, using a passive-tag BFSA based simulation model that assumes 10 to 1,500 tags per reader and is created with OPNET Modeler 17. Ceteris paribus, the authors' results indicate that total census delay is lowest for UHF tags, while network throughput performance of LF tags is highest for large scale implementations of hundreds of tags in reader's range. A statistical analysis has been conducted on the findings for the three different sets.

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Wang, Jun, and Yasutake Takahashi. "Particle Smoother-Based Landmark Mapping for the SLAM Method of an Indoor Mobile Robot with a Non-Gaussian Detection Model." Journal of Sensors 2019 (October 14, 2019): 1–19. http://dx.doi.org/10.1155/2019/3717298.

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HF-band radio-frequency identification (RFID) is a robust identification system that is rarely influenced by objects in the robot activity area or by illumination conditions. An HF-band RFID system is capable of facilitating a reasonably accurate and robust self-localization of indoor mobile robots. An RFID-based self-localization system for an indoor mobile robot requires prior knowledge of the map which contains the ID information and positions of the RFID tags used in the environment. Generally, the map of RFID tags is manually built. To reduce labor costs, the simultaneous localization and mapping (SLAM) technique is designed to localize the mobile robot and build a map of the RFID tags simultaneously. In this study, multiple HF-band RFID readers are installed on the bottom of an omnidirectional mobile robot and RFID tags are spread on the floor. Because the tag detection process of the HF-band RFID system does not follow a standard Gaussian distribution, extended Kalman filter- (EKF-) based landmark updates are unsuitable. This paper proposes a novel SLAM method for the indoor mobile robot with a non-Gaussian detection model, by using the particle smoother for the landmark mapping and particle filter for the self-localization of the mobile robot. The proposed SLAM method is evaluated through experiments with the HF-band RFID system which has the non-Gaussian detection model. Furthermore, the proposed SLAM method is also evaluated by a range and bearing sensor which has the standard Gaussian detection model. In particular, the proposed method is compared against two other SLAM methods: FastSLAM and SLAM methods utilize particle filter for both the landmark updating and robot self-localization. The experimental results show the validity and superiority of the proposed SLAM method.

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Gortschacher, Lukas Johann, Franz Amtmann, Ulrich Muehlmann, Erich Merlin, Peter Priller, and Jasmin Grosinger. "Passive HF RFID Repeater for Communicating With Tags in Metal Housings." IEEE Antennas and Wireless Propagation Letters 19, no. 9 (2020): 1625–29. http://dx.doi.org/10.1109/lawp.2020.3012202.

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Tan, Yuan, Yu Zeng, Yong Fa Ling, and Hao Wei. "RFID Tags Collision Resolution on Physical Layer by Using C-Means Clustering Algorithm." Applied Mechanics and Materials 416-417 (September 2013): 1314–18. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.1314.

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A traditional Radio Frequency Identification (RFID) system only resolves collisions of multiple tags on the Medium Access Control (MAC) layer, discarding the signals of the physical layer. Recently different groups started to pay attention on slots with colliding RFID tag signals, and coping with collisions on the physical layer, however. We proposes that using C-means clustering algorithm to analyze signal constellations of two colliding tags responses, to recovery from collisions of two tags on the physical layer and decoding their ID information successfully. This design uses low frequency (LF) 125k Hz carrier wave, and is also suitable for high frequency (HF) communication situation. Additionally, an error performance analysis with different SNR is shown. Based on performance simulations results, we demonstrate this approach can resolve collisions of two tags effectively in a slot on the physical layer and get a lower error probability.

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Chung, You, and Franck B. Kimetya. "Agricultural School-Food Logistic Management System Design Using HF/UHF Dual-Band RFID Tags." Journal of Korean Institute of Communications and Information Sciences 44, no. 4 (2019): 743–47. http://dx.doi.org/10.7840/kics.2019.44.4.743.

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Zurita, M., R. C. S. Freire, S. Tedjini, and S. A. Moshkalev. "A Review of Implementing ADC in RFID Sensor." Journal of Sensors 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/8952947.

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The general considerations to design a sensor interface for passive RFID tags are discussed. This way, power and timing constraints imposed by ISO/IEC 15693 and ISO/IEC 14443 standards to HF RFID tags are explored. A generic multisensor interface is proposed and a survey analysis on the most suitable analog-to-digital converters for passive RFID sensing applications is reported. The most appropriate converter type and architecture are suggested. At the end, a specific sensor interface for carbon nanotube gas sensors is proposed and a brief discussion about its implemented circuits and preliminary results is made.

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Rizzi, A., A. Volpi, R. Rinaldi, R. Bandinelli, A. Gonzalez, and B. Hardgrave. "Assessing the performances of RFID UHF and HF dual-frequency apparel tags." International Journal of RF Technologies 10, no. 1-2 (2019): 39–63. http://dx.doi.org/10.3233/rft-180106.

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Turner, Leigh, and Marlin H. Mickle. "Overview primer on near-field UHF versus near-field HF RFID tags." International Journal of Radio Frequency Identification Technology and Applications 1, no. 3 (2007): 291. http://dx.doi.org/10.1504/ijrfita.2007.015852.

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Gvozdenovic, Nikola, Ralph Prestros, and Christoph F. Mecklenbräuker. "Far-Field Testing Method of Spurious Emission Produced by HF RFID." International Journal of Antennas and Propagation 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/4715898.

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We present measurements of spurious emission produced by high-frequency radio frequency identification (HF RFID) using carrier frequency of 13.56 MHz. HF RFID tags produce unwanted emission due to rectification and more generally due to nonlinearity of analog front end. Depending on the conducting material of an HF RFID coil and surrounding dielectric material, the coil behaves as more or less good antenna on some harmonic frequencies. Exact characterization and analysis of unwanted emission is important from the security perspective as well as from the perspective of interference with other systems. Consequently we measured the harmonics produced in the integrated circuitry and characterized radiation properties of the antenna. Finally we present the measurements of the spurious emission performed in a Gigahertz Transverse Electromagnetic (GTEM) cell.

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Timoshenko, Igor. "Library RFID systems: Designing general-purpose systems based on the international standards." Scientific and Technical Libraries, no. 4 (April 1, 2018): 53–59. http://dx.doi.org/10.33186/1027-3689-2018-4-53-59.

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The author analyzes the current status of RFID standards as related to library technologies. Main features and distinctions of the standards designed by the two international organizations: ISO/IEC JTC 1and EPCglobal. RFID standardization is to make the technology applicable to various fields. The prospects for further RFID development towards global control systems, among them integrated library systems through consolidating local systems and harmonizing standards for different frequency equipment, are analyzed. The standard approach towards RFID technology application in libraries is discussed. The author also examines prospects for designing RFID dual-frequency library systems for HF and UHF tags based on the effective international standards. He also emphasizes that introduction of these systems is hindered by the lack of equipment with relevant features - tags and readers, and by manufacturers unwillingness to invest in production due to the absence of market outlets.

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Jain, Anjali, and Agya Mishra. "Design of IoT based Real-Time Bus Tracking App using HF-RFID." International Journal of Recent Technology and Engineering 9, no. 6 (2021): 71–75. http://dx.doi.org/10.35940/ijrte.f5365.039621.

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Public Transportation is the major means of Bus among people. A recent survey by the National Sample Survey Organization says that about 62-66% of people use the bus as their mode of transport. Public Bus tracking system aims at providing the instant status of the bus to the users via an automated system. This paper describes a design of IoT enabled real time bus tracking system. In this work a bus tracking mobile phone app is developed, using that people can exactly locate the bus status and time to bus arrival at bus-stop. This work uses high frequency RFID tags at buses and RFID receivers at bus-stops and with NodeMCU real time RIFD tagging (bus running) information is collected and uploaded on cloud. Users can access the bus running and status from cloud on mobile app in real time.

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Ali, Abdullah M., Changhu Du, Thiyam R. Singh, and Ruhikanta A. Meetei. "Elucidating the Molecular Architecture of the FA-Core Complex Utilizing Biochemical Purification Approach." Blood 110, no. 11 (2007): 1683. http://dx.doi.org/10.1182/blood.v110.11.1683.1683.

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Abstract FA is a rare, recessive disorder characterized by progressive bone marrow failure, developmental abnormalities, chromosome instability, cellular hypersensitivity to DNA cross-linking agents, and predisposition to cancer, mainly leukemias and squamous cell carcinomas of the head and neck. FA is genetically heterogeneous, represented by at least thirteen different complementation groups. The genes corresponding to groups A, B, C, D1 (BRCA2), D2, E, F, G, I, J, L, M and N have been cloned. The Fanconi proteins FANC -A, -B, -C, -E, -F, -G, -L, -M along with another newly discovered protein FAAP100 forms a core complex (CC) in the nucleus that is required for the monoubiquitination of two other Fanconi proteins FANCD2 and FANCI. In addition to their presence in nucleus, most of the Fanconi proteins are also found in the cytosol however their role in cytosol is not clear. Also, whether the FA-core complex proteins exist as a single complex or sub-complexes in the cytosol is not clear. The goals of this study are to develop a method of purification of FA core complex from nuclear and cytosol identify individual components of cytosolic and nuclear complex(s) of the FA proteins. We have established a two-step purification method using 6XHis and FLAG tags for the biochemical and functional characterization of the FA core complex proteins. In an attempt to isolate interacting partners of FANCC, FANCG, FANCL and FAAP100 proteins; we have established four different HeLa cell lines; HeLa-HF-FANCC, HeLa-HF-FANCG, HeLa-HF-FANCL and HeLa-HF-FAAP100, stably expressing HF-FANCC, HF-FANCG, HF-FANCL and HF-FAAP100 recombinant proteins respectively. Affinity purification was carried out to isolate the complexes from the cytosol and nuclear extracts prepared from stable cell lines. The polypeptides purified from the complexes were identified by mass spectrometry. The results suggest that, in addition to the existence of the FA-core complex containing FANC -A, -B, -C, -E, -F, -G, -L and 100, the FA proteins also exists as sub-complexes in the cytosol. FANCL was found to form a sub-complex with FANCB and FAAP100 in cytosol. Also FANCC, a predominantly cytosolic protein was found to form a sub-complex with FANCE in cytosol. We found several novel proteins that interact with FA proteins.

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Ali, Abdullah M., Thiyam R. Singh, and Ruhikanta A. Meetei. "Identification and Partial Characterization of Fanconi Anemia Associated Polypeptides (FAAPs) Using a Versatile Multiprotein-Complex Purification Method." Blood 108, no. 11 (2006): 989. http://dx.doi.org/10.1182/blood.v108.11.989.989.

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Abstract Fanconi Anemia (FA) is an autosomal recessive and X-linked disorder characterized by congenital abnormalities, progressive bone marrow failure, and a high incidence of hematological (acute leukemia) and non-hematological malignancies (squamous cell carcinomas of the head and neck or gynecologic system). FA is genetically heterogeneous disease and to date 12 complementation groups are known of which 11 gene products have been identified (FANC- A, B, C, D1, D2, E, F, G, J, L, M). Eight of the FA gene products, FANCA, FANCB, FANC, FANCE, FANCF, FANCG, FANCL and FANCM form a multiprotein FA core complex. This complex is required for the monoubiquitination of FANCD2 upon DNA damage by various genotoxic agents. The other two FA proteins; FANCD1/BRCA2 and FANCJ are believed to act “downstream” of FANCD2. In order to understand the role of FA proteins in DNA repair pathway it is necessary to find all the FA genes and their interacting partners. We have established a two-step purification method using 6XHis and FLAG tags for the biochemical and functional characterization of the FA core complex proteins. In an attempt to isolate interacting partners of FANCM and FANCL proteins; we have established two different HeLa cell lines; HeLa-HF-FANCM and HeLa-HF-FANCL, stably expressing HF-FANCM and HF-FANCL recombinant proteins respectively. Two step affinity purification was carried out to isolate the complexes from the extracts prepared from stable cell lines. Two polypeptides, namely, FAAP16 and FAAP100 were identified by mass-spectrometry as major interacting partners of FANCM and FANCL respectively. The interaction of FAAP16 and FAAP100 with other FA core complex proteins was confirmed by reciprocal affinity purification coupled mass-spectrometry using HeLa cells stably expressing HF-FAAP16 and HF-FAAP100 proteins. Furthermore, suppression of FAAP16 and FAAP100 in HeLa cells using siRNA resulted in a reduced MMC-induced FANCD2 monoubiquitination. Studies are being carried out to understand the precise role of these proteins in the FA core complex. These data suggest additional proteins interact with FA core complex members and demonstrate the utility of the purification method in delineating interacting proteins involved in FA.

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Mi, Jian, and Yasutake Takahashi. "Design of an HF-Band RFID System with Multiple Readers and Passive Tags for Indoor Mobile Robot Self-Localization." Sensors 16, no. 8 (2016): 1200. http://dx.doi.org/10.3390/s16081200.

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Zurita, Marcos, Raimundo C. S. Freire, and Smail Tedjini. "A 1 to 10-bit, 85.3 fJ/Conv-step ADC for RFID Sensors." Journal of Integrated Circuits and Systems 11, no. 3 (2016): 177–84. http://dx.doi.org/10.29292/jics.v11i3.442.

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This paper presents the design results of an ultra-low power 1 to 10 bit arbitrary resolution switched capacitor analog to digital converter. In addition to using low-power elements, his project also used a library specifically optimized for the proposed converter rather than a standard library as in traditional approach. This approach enabled the overall converter consumption to be reduced by about 70 %. Consuming 7.29 μA at 1 V supply and taking less than 9 μs per conversion (10 bit mode) it can be used in LF, HF or UHF RFID passive sensor tags. The presented converter was designed in 180 nm CMOS technology occupying about 0.052 mm2 of silicon area. A simulation result shows a figure of merit equal to 85.3 fJ/Conversion-step and 9.5 effective number of bits.

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Jantunen, Joni, Ilari Teikari, Michael Pelissier, Bertrand Gomez, and Florent Lepin. "Implementation and verification of a new impulse UWB radio system with HF/UHF remote-powering for passive wireless memory tags." International Journal of Embedded Systems 9, no. 2 (2017): 130. http://dx.doi.org/10.1504/ijes.2017.083733.

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Lepin, Florent, Bertrand Gomez, Joni Jantunen, Ilari Teikari, and Michael Pelissier. "Implementation and verification of a new impulse UWB radio system with HF/UHF remote-powering for passive wireless memory tags." International Journal of Embedded Systems 9, no. 2 (2017): 130. http://dx.doi.org/10.1504/ijes.2017.10004391.

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Álvarez López, Yuri, Jacqueline Franssen, Guillermo Álvarez Narciandi, Janet Pagnozzi, Ignacio González-Pinto Arrillaga, and Fernando Las-Heras Andrés. "RFID Technology for Management and Tracking: e-Health Applications." Sensors 18, no. 8 (2018): 2663. http://dx.doi.org/10.3390/s18082663.

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Radio frequency identification (RFID) has become a key technology in the logistics and management industry, thanks to distinctive features such as the low cost of RFID tags, and the easiness of the RFID tags’ deployment and integration within the items to be tracked. In consequence, RFID plays a fundamental role in the so-called digital factory or 4.0 Industry, aiming to increase the level of automatization of industrial processes. In addition, RFID has also been found to be of great help in improving the tracking of patients, medicines, and medical assets in hospitals, where the digitalization of these operations improves their efficiency and safety. This contribution reviews the state-of-the-art of RFID for e-Health applications, describing the contributions to improve medical services and discussing the limitations. In particular, it has been found that a lot of effort has been put into software development, but in most of the cases a detailed study of the physical layer (that is, the characterization of the RFID signals within the area where the system is deployed) is not properly conducted. This contribution describes a basic RFID system for tracking and managing assets in hospitals, aiming to provide additional details about implementation aspects that must be considered to ensure proper functionality of the system. Although the scope of the RFID system described in this contribution is restricted to a small area of the hospital, the architecture is fully scalable to cover the needs of the different medical services in the hospital. Ultra high-frequency (UHF) RFID technology is selected over the most extended near-field communication (NFC) and high-frequency (HF) RFID technology to minimize hardware infrastructure. In particular, UHF RFID also makes the coverage/reading area conformation easier by using different kinds of antennas. Information is stored in a database, which is accessed from end-user mobile devices (tablets, smartphones) where the position and status of the assets to be tracked are displayed.

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Yoshihara, Hiroshi, and Masahiro Yoshinobu. "In-plane shear strength of paper measured by asymmetric four-point bending test." Holzforschung 69, no. 1 (2015): 41–46. http://dx.doi.org/10.1515/hf-2014-0047.

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Abstract The in-plane shear strengths (IPSS) of copy paper, filter paper, and sack paper were obtained from an asymmetric four-point bending (AFPB) test. Rectangular tabs of medium-density fibreboard (MDF) were bonded to the paper specimen. The length of the clearance between the tabs was varied, and the influence of the clearance on the IPSS value was investigated. The IPSS obtained from the AFPB test was compared with that obtained from a 35° off-axis tension (OAT) test, which was proposed in a previous study. The IPSS values obtained from the AFPB tests on the copy paper and sack paper were significantly lower than those obtained from the 35° OAT tests because of the localised buckling caused by the negative principal stress. In contrast, the IPSS values obtained from the AFPB and OAT tests on the filter paper were in agreement when the clearance length was >5 mm because the buckling effect was excluded.

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Janeczek, Kamil, Aneta Arazna, and Krzysztof Lipiec. "Thermomechanical reliability of conductive tracks screen printed on flexible magnetic sheets." Microelectronics International 35, no. 1 (2018): 45–51. http://dx.doi.org/10.1108/mi-11-2016-0075.

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Purpose The aim of this paper is to present thermal and mechanical durability of conductive tracks screen-printed with silver polymer pastes on flexible magnetic sheets. Design/methodology/approach A test pattern that consisted of three straight lines was printed with two different silver pastes on a flexible magnetic sheet and a polyethylene naphthalate (PEN) foil for comparison. Electrical properties of these lines were examined by resistance measurements and their thickness was measured with a digital microscope on cross sections. Cyclic bending was performed to investigate mechanical properties of prepared samples as well as thermal shocks to analyse their thermal durability. Further, samples after thermal shocks underwent cyclic bending to test influence of thermal exposure on mechanical properties of the prepared samples. Changes in the test lines after the thermal and mechanical tests were assessed by resistance measurements and microscopic analysis of surface and internal structure of the test lines. Findings It was found that the most important factor having an impact on electrical, mechanical and thermal properties of the conductive tracks screen-printed on magnetic sheets is a type of paste used. The samples made with the paste PM-406 exhibited lower resistance because of a higher layer thickness compared to the lines printed with the paste PF-050. The PM-406 layers were revealed to be less durable to mechanical and thermal exposures. An analogical relationship was noticed for the samples made with PM-406 and PF-050 on a PEN foil after thermal shocks and cyclic bending. When magnetic sheets were used as a substrate, a bigger degree of damage was observed for the PF-050 samples, which even lost their electrical continuity after 1,000 bending cycles and thermal cycles, irrespective of their number. Some damage was also noticed in the magnetic sheet after the bending and thermal cycles. Research limitations/implications Further investigations are required to examine the influence of other types of thermal exposure on electrical properties of lines printed on magnetic sheets. Other types of magnetic sheets are also recommended to be investigated as substrate materials. Practical implications The results reported in this study can be useful among others for designers of radio frequency identification (RFID) systems, which are intended to operate in a challenging environment with strong mechanical and thermal exposures. Originality/value This paper contains valuable information concerning mechanical and thermal properties of conductive tracks screen-printed on magnetic sheets which can be used, i.e. for designing of reliable near field communication/high frequency (NFC/HF)-RFID tags suitable for metallic surface.

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Carmichael, Remy N., Olivia N. Genther-Schroeder, Erin L. Deters, et al. "The influence of supplemental zinc and dietary fiber concentration on mineral retention of beef steers1." Translational Animal Science 3, no. 2 (2019): 784–95. http://dx.doi.org/10.1093/tas/txz032.

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Abstract The objective was to determine if zinc (Zn) retention improved with supplemental Zn above recommended concentrations with increasing dietary fiber concentration. Angus steers (n = 32; 309 ± 4.2 kg body weight [BW]) with GeneMax gain scores of 3, 4, or 5 were utilized in a 2 × 2 factorial arrangement (8 steers per treatment). Steers were stagger started (four blocks of eight steers) and stratified by BW within growing diets to one of two Zn strategies (ZNTRT), no supplemental Zn (analyzed 36 mg Zn/kg dry matter [DM]; CON) or supranutritional Zn (CON + 60 mg Zn/kg DM as ZnSO4 + 60 mg Zn/kg DM as Zn–amino acid complex; SUPZN). Dietary fiber strategies (FIBER) were formulated to target two fiber supplementation rates representing high fiber (HF; ~35% neutral detergent fiber [NDF]) or low fiber (LF; ~25% NDF). Within block, steers received HF for 60 d; then pens were randomly assigned to LF or HF for finishing. Steers fed LF were transitioned for 15 d; on day 75, steers were moved to metabolism crates and adapted for 10 d, followed by 5 d of total fecal and urine collection. Retention of Zn, Mn, Fe, Cu, and N were calculated. The model for analysis of metabolism data included the fixed effects of ZNTRT, FIBER, block, and the interaction of ZNTRT × FIBER, with the three-way interaction of ZNTRT × FIBER × block as random. Steer was the experimental unit (n = 8 per treatment combination). Zinc did not affect initial 60-d performance (P ≥ 0.62). DM and organic matter digestibility were lesser (P = 0.02) and N digestibility tended to be lesser (P = 0.07) in CON vs. SUPZN. Intake and digestibility of NDF and acid detergent fiber were greater (P ≤ 0.01) in HF vs. LF. Digestibility and retention of N as a percentage of intake were greater (P ≤ 0.04) whereas N retention as grams per day tended to be greater in HF vs. LF (P = 0.06). Apparent absorption of Zn tended to be greater (P = 0.06) in CON vs. SUPZN. A ZNTRT × FIBER effect was identified for Zn retention (milligrams per day; P = 0.01) where within SUPZN Zn retention was greater in HF vs. LF (P &lt; 0.01). Apparent absorption and retention of Zn were greater (% of intake; P ≤ 0.02) in HF vs. LF. Apparent absorption of Cu, Fe, and Mn was unaffected by ZNTRT or FIBER (P ≥ 0.24). Increasing dietary Zn increased Zn retained regardless of changes in coefficient of absorption. In addition, dietary fiber content may impact trace mineral and N metabolism by steers, potentially due to increased release of these nutrients from feed as fiber digestibility increases. It appears dietary Zn concentrations and diet composition influence trace mineral absorption in beef steers.

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Fabrizio, G. A., A. B. Gershman, and M. D. Turley. "Robust adaptive beamforming for HF surface wave over-the-horizon radar." IEEE Transactions on Aerospace and Electronic Systems 40, no. 2 (2004): 510–25. http://dx.doi.org/10.1109/taes.2004.1310001.

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Steinhardt, M. "Effekte des Absetzens auf physiologische Reaktionen von Jungrindern aus der Mutterkuhhaltung bei Transport mit Straßenfahrzeugen." Tierärztliche Praxis Ausgabe G: Großtiere / Nutztiere 34, no. 05 (2006): 307–18. http://dx.doi.org/10.1055/s-0037-1621084.

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Zusammenfassung: Zieh: Prüfung des Einflusses des Absetzens von den Muttertieren auf Reaktionsfähigkeit und physiologische Messwerte von Jungrindern bei einem Transport (TP). Material und Methoden: An 16 Jungrindern der Mutterkuhherde (Weidehaltung, je acht behandelte Tiere und Kontrolltiere) erfolgten vor und 13-18 Tage nach dem Absetzen (23-27 Tage nach erstem Test) Langzeitmessungen der Herzschlagfrequenz (HF) und Punktmessungen der Blutzusammensetzung und der Rektaltemperatur (RT) vor TP, unmittelbar nach TP sowie am folgenden Tag. Die behandelten Tiere waren vier Monate lang an drei Tagen pro Woche für 90 Minuten aufgestallt und einem intensiven Einfluss durch zwei Personen ausgesetzt worden. Ergebnisse: Kontroll- und behandelte Tiere differierten signifikant in der HF nach der Aufstallung und beimTPund an den meisten der physiologischen Variablen in den drei Untersuchungen vor und nach dem TP. Das Absetzen beeinflusste signifikant die HF nach der Aufstallung und während der Wartezeit auf dem Fahrzeug, nicht die HF bei Verladen, TP und Entladen. Bei behandelten Tieren war die HF aller Phasen des TP-Vor- gangs, bei den Kontrolltieren nur dieHFbeimVerladen und nach dem Absetzen auch die HFzu TP-Beginn signifikant gegenüber der HF nach Aufstallung und derjenigen nach TP auf der Weide erhöht. Unterschiedliche Erregungssteigerungen der Tiere zeigten sich in größeren Werten fürHb, Hk, O2CAP, O2CONT, O2SAT, pO2, pH und kleineren Werten für pCO2, BE und HCO3 der Kontrolltiere gegenüber den behandelten Tieren insbesondere vor dem ersten TP-Test. Durch den TP änderten sich nur pO2 und RT signifikant. Nach dem Absetzen war eine signifikant verringerte RT beim TP-Vorgang festzustellen. Schlussfolgerungen: Reaktionen der Jungrinder aus Mutterkuhhaltung können bei der Vorbereitung zum TP vor und nach dem Absetzen so stark sein, dass in den übrigen Phasen des TP nur mäßige änderungen physiologischer Variablen vorliegen. Effekte der Gewöhnung der Tiere an Aufstallung und Manipulationen waren nach dem Absetzen an den physiologischen Variablen der behandelten Jungrinder nicht mehr so deutlich wie vorher, der schnellere Rückgang der Erregung während der Wartezeit auf dem Fahrzeug war unverändert.

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Su, Hongtao, Hongwei Liu, Penglang Shui, and Zheng Bao. "Adaptive Beamforming for Nonstationary HF Interference Cancellation in Skywave Over-the-Horizon Radar." IEEE Transactions on Aerospace and Electronic Systems 49, no. 1 (2013): 312–24. http://dx.doi.org/10.1109/taes.2013.6404105.

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Besshaposhnikova, Valentina Iosifovna, Natalia Vladimirovna Besshaposhnikova, Tatiana Stanislavovna Lebedeva, and Marina Vladimirovna Zagoruiko. "FLAME-RETARDANT MODIFICATION OF POLEACRYLONITRILE FIBERS PROCESSED HF CAPACITIVE PLASMA OF LOW PRESSURE." Theoretical & Applied Science 67, no. 11 (2018): 47–53. http://dx.doi.org/10.15863/tas.2018.11.67.9.

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Dippon, Matthias, Wolfram Petzl, Dorothee Lange, and Holm Zerbe. "Automatische Geburtsüberwachung bei primi- und pluriparen Rindern einer Kreuzungsherde aus Holstein Friesian und Fleckvieh." Tierärztliche Praxis Ausgabe G: Großtiere / Nutztiere 45, no. 01 (2017): 18–23. http://dx.doi.org/10.15653/tpg-160812.

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Zusammenfassung Gegenstand und Ziel: Hohe Kälberverluste im perinatalen Zeitraum sind nach wie vor ein ethisches und wirtschaftliches Problem in Milchviehbetrieben. Die Verbesserung des Geburtsmanagements durch eine frequente Geburtsüberwachung kann hierbei die Überlebensraten der Kälber nachhaltig erhöhen. Ziel der Studie war, in einer Kreuzungsherde den Einfluss des Rasseanteils und der Parität auf Praktikabilität und Zuverlässigkeit eines neu entwickelten Geburtsüberwachungssystems zu evaluieren. Material und Methoden: Das Geburtsüberwachungssystem wurde bei 23 primiparen und 31 multiparen Kühen einer Kreuzungsherde aus Holstein Friesian (HF) und Fleckvieh (FV) 7 Tage vor dem errechneten Geburtstermin eingesetzt. Nach dem dritten Fehlalarm wurde der Versuch abgebrochen und als falsch positiv (FP) bewertet. Die Abhängigkeit der Versuchsabbrüche vom genetischen Anteil der Rasse HF wurde mittels Mann-Whitney-U-Test statistisch berechnet. Ergebnisse: Bei Tieren mit überwiegendem HF-Anteil (> 66%) konnte der Geburtsmelder in allen Fällen erfolgreich angewendet werden. Überwog der FV-Anteil (> 66%), kam es zu Fehlalarmen durch Senderverlust, was zu zahlreichen Versuchsabbrüchen (FP) führte (31,6%). Multipare Kühe verloren den intravaginalen Sender häufiger als primipare Kühe (29,0% vs. 8,7%). Bei 72,2% der hochtragenden Kühe mit einem Geburtsmelder trat eitriger Scheidenausfluss auf. Schlussfolgerung und klinische Relevanz: Das automatische Geburtsüberwachungssystem lässt sich bei HF-Kühen zuverlässig einsetzen. Aufgrund der hohen Anzahl an Senderverlusten kann sein Einsatz derzeit nicht bei Tieren empfohlen werden, deren genetischer FV-Anteil 66% übersteigt. Zukünftige Entwicklungen automatischer Geburtsmelder sollten unter Berücksichtigung des Rasseeinflusses erfolgen.

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Liu, Qian, Guochun Zhao, Jianhua Li, et al. "Detrital Zircon U-Pb-Hf Isotopes of Middle Neoproterozoic Sedimentary Rocks in the Altyn Tagh Orogen, Southeastern Tarim: Insights for a Tarim-South China-North India Connection in the Periphery of Rodinia." Lithosphere 2020, no. 1 (2020): 1–10. http://dx.doi.org/10.2113/2020/8895888.

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Abstract The location of the Tarim craton during the assembly and breakup of the Rodinia supercontinent remains enigmatic, with some models advocating a Tarim-Australia connection and others a location at the heart of the unified Rodinia supercontinent between Australia and Laurentia. In this study, our new zircon U-Pb dating results suggest that middle Neoproterozoic sedimentary rocks in the Altyn Tagh orogen of the southeastern Tarim craton were deposited between ca. 880 and 760 Ma in a rifting-related setting slightly prior to the breakup of Rodinia at ca. 750 Ma. A compilation of existing Neoproterozoic geological records also indicates that the Altyn Tagh orogen of the southeastern Tarim craton underwent collision at ca. 1.0-0.9 Ga and rifting at ca. 850-600 Ma related to the assembly and breakup of Rodinia. Furthermore, in order to establish the paleoposition of the Tarim craton with respect to Rodinia, available detrital zircon U-Pb ages and Hf isotopes from Meso- to Neoproterozoic sedimentary rocks were compiled. Comparable detrital zircon ages (at ca. 0.9, 1.3-1.1, and 1.7 Ga) and Hf isotopes indicate a close linkage among rocks of the southeastern Tarim craton, Cathaysia, and North India but exclude a northern or western Australian affinity. In addition, detrital zircons from the northern Tarim craton exhibit a prominent age peak at ca. 830 Ma with minor spectra at ca. 1.9 and 2.5 Ga but lack Mesoproterozoic ages, comparable to the northern and western Yangtze block. Together with comparable geological responses to the assembly and breakup of the Rodinia supercontinent, we offer a new perspective of the location of the Tarim craton between South China and North India in the periphery of Rodinia.

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CHEN, Hongjie, Nan WANG, Cailai WU, et al. "Geochemistry, Zircon U-Pb Dating and Hf Isotopic Characteristics of Neoproterozoic Granitoids in the Yaganbuyang Area, Altyn Tagh, NW China." Acta Geologica Sinica - English Edition 92, no. 4 (2018): 1366–83. http://dx.doi.org/10.1111/1755-6724.13632.

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Li, Yunshuai, Jianxin Zhang, Shengyao Yu, Shengrong Li, and Jianghua Gong. "Origin of Early Paleozoic garnet peridotite and associated garnet pyroxenite in the south Altyn Tagh, NW China: Constraints from geochemistry, SHRIMP U–Pb zircon dating and Hf isotopes." Journal of Asian Earth Sciences 100 (March 2015): 60–77. http://dx.doi.org/10.1016/j.jseaes.2015.01.004.

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Yao, Lei, Zhicheng Lü, Caisheng Zhao, et al. "Zircon U–Pb geochronological, trace element, and Hf isotopic constraints on the genesis of the Fe and Cu skarn deposits in the Qiman Tagh area, Qinghai Province, Eastern Kunlun Orogen, China." Ore Geology Reviews 91 (December 2017): 387–403. http://dx.doi.org/10.1016/j.oregeorev.2017.09.017.

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Wang, Zhong-Mei, Chun-Ming Han, Wen-Jiao Xiao, Ben-Xun Su, Jia-Xin Ding, and Shuai-Hua Song. "Geochemical and zircon U-Pb and Lu-Hf isotopic constraints on the origin of supracrustal rocks from the mid-Qilian terrane: A comparison between supracrustal rocks on the two sides of the eastern segment of the Altyn Tagh Fault." Precambrian Research 294 (June 2017): 284–306. http://dx.doi.org/10.1016/j.precamres.2017.04.005.

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Long, Xiaoping, Chao Yuan, Min Sun, Alfred Kröner, and Guochun Zhao. "New geochemical and combined zircon U–Pb and Lu–Hf isotopic data of orthogneisses in the northern Altyn Tagh, northern margin of the Tibetan plateau: Implication for Archean evolution of the Dunhuang Block and crust formation in NW China." Lithos 200-201 (July 2014): 418–31. http://dx.doi.org/10.1016/j.lithos.2014.05.008.

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"New HF RFID tags give Texas Instruments the industrys widest range of tags and features available." Assembly Automation 26, no. 2 (2006). http://dx.doi.org/10.1108/aa.2006.03326bab.005.

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"Murata launches one of the worlds smallest HF-band RFID tags." Assembly Automation 33, no. 2 (2013). http://dx.doi.org/10.1108/aa.2013.03333baa.003.

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Yang, Ni, Ting Liu, Robert O’Meally, et al. "Abstract 246: Rescuing an Acquired Cardiac Retinoic Acid Deficiency Prevents Hypertrophy and Sudden Cardiac Death in a Pressure Overload/Chronic Catecholamine Model of Hypertrophy and Heart Failure." Circulation Research 121, suppl_1 (2017). http://dx.doi.org/10.1161/res.121.suppl_1.246.

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Introduction: Recently, we have investigated a pressure-overload/chronic catecholamine guinea pig model (ACi) of cardiac hypertrophy (HYP) and HF with the unique features of acquired long QT syndrome and sudden cardiac death (SCD) by quantitative global-scale proteomics using isobaric tags for relative and absolute quantitation. Hypothesis: By compiling proteins altered significantly both compensated HYP and HF, it may be possible to identify novel early contributors to pressure overload- induced HF pathogenesis. Results: Pathway mapping of proteins differentially regulated in HYP that were also changed in HF (p<0.05 in both HYP and HF) revealed altered “retinoate biosynthesis” (p<0.01) and “RAR Activation” (p<0.05), suggesting that guinea pig HYP &HF might be related to impaired Vitamin A metabolism, specifically, to a deficit in the bioactive metabolite, all-trans retinoic acid. Causal Regulator Analysis indicated that coordinate regulation of ATRA-responsive proteins was unlikely to have occurred by chance (p=1.88x10 -11 ) and that the ATRA program was downregulated (z-score<-1.2). ATRA deficit would attenuate transcriptional programs that control fatty acid oxidation, excitation/contraction-coupling, contraction, and antioxidant defense - all of which were decreased in heart failure. Metabolomic profiling by mass spectrometry showed that ATRA, alone among the resident cardiac retinoids, was downregulated in HYP and HF (Down 32% & 33% respectively p<0.05). Secondly, the specific agonist of RXR signaling, 9-cis RA, is not present in adult guinea pig hearts. Proteome and transcriptome data indicate that the ATRA deficit stems from downregulation of retinaldehyde dehydrogenase 1 (RALDH1) by 23% in HYP and 39% in HF (p<0.01 each). Treatment with ATRA (2mg/kg/day) mitigated heart weight/tibia length (ACi: 0.71 , ACi + ATRA: 0.57; p<0.01), improved fractional shortening (27.4% vs 37.5%, p<0.01) and ejection fraction (50.4% vs. 64.8%, p<0.01). Preliminary studies indicate that ATRA treatment also reduces the incidence of sudden cardiac death (55% vs 15% (p<0.01)) in the guinea pig ACi model. Conclusion: The data support a causal role for ATRA deficiency in the pathogenesis of pressure overload-induced HF and susceptibility to SCD.

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Bradel-Tretheway, Birgit G., J. Lizbeth Reyes Zamora, Jacquelyn A. Stone, Qian Liu, Jenny Li, and Hector C. Aguilar. "Nipah and Hendra Virus Glycoproteins Induce Comparable Homologous but Distinct Heterologous Fusion Phenotypes." Journal of Virology 93, no. 13 (2019). http://dx.doi.org/10.1128/jvi.00577-19.

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ABSTRACTNipah and Hendra viruses (NiV and HeV) exhibit high lethality in humans and are biosafety level 4 (BSL-4) paramyxoviruses in the growing genusHenipavirus. The attachment (G) and fusion (F) envelope glycoproteins are both required for viral entry into cells and for cell-cell fusion, which is pathognomonic of henipaviral infections. Here, we compared the fusogenic capacities between homologous and heterologous pairs of NiV and HeV glycoproteins. Importantly, to accurately measure their fusogenic capacities, as these depend on glycoprotein cell surface expression (CSE) levels, we inserted identical extracellular tags to both fusion (FLAG tags) or both attachment (hemagglutinin [HA] tags) glycoproteins. Importantly, these tags were placed in extracellular sites where they did not affect glycoprotein expression or function. NiV and HeV glycoproteins induced comparable levels of homologous HEK293T cell-cell fusion. Surprisingly, however, while the heterologous NiV F/HeV G (NF/HG) combination yielded a hypofusogenic phenotype, the heterologous HeV F/NiV G (HF/NG) combination yielded a hyperfusogenic phenotype. Pseudotyped viral entry levels primarily corroborated the fusogenic phenotypes of the glycoprotein pairs analyzed. Furthermore, we constructed G and F chimeras that allowed us to map the overall regions in G and F that contributed to these hyperfusogenic or hypofusogenic phenotypes. Importantly, the fusogenic phenotypes of the glycoprotein combinations negatively correlated with the avidities of F-G interactions, supporting the F/G dissociation model of henipavirus-induced membrane fusion, even in the context of heterologous glycoprotein pairs.IMPORTANCEThe NiV and HeV henipaviruses are BSL-4 pathogens transmitted from bats. NiV and HeV often lead to human death and animal diseases. The formation of multinucleated cells (syncytia) is a hallmark of henipaviral infections and is caused by fusion of cells coordinated by interactions of the viral attachment (G) and fusion (F) glycoproteins. We found via various assays that viral entry and syncytium formation depend on the viral origin of the glycoproteins, with HeV F and NiV G promoting higher membrane fusion levels than their counterparts. This is important knowledge, since both viruses use the same bat vector species and potential coinfections of these or subsequent hosts may alter the outcome of disease.

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Hakola, Liisa, Elina Jansson, Romain Futsch, et al. "Sustainable roll-to-roll manufactured multi-layer smart label." International Journal of Advanced Manufacturing Technology, August 19, 2021. http://dx.doi.org/10.1007/s00170-021-07640-z.

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AbstractSustainability in electronics has a growing importance due to, e.g. increasing electronic waste, and global and European sustainability goals. Printing technologies and use of paper as a substrate enable manufacturing of sustainable electronic devices for emerging applications, such as the multi-layer anti-counterfeit label presented in this paper. This device consisted of electrochromic display (ECD) element, NFC (near field communication) tag and circuitry, all fully roll-to-roll (R2R) printed and assembled on plastic-free paper substrate, thus leading to a sustainable and recyclable device. Our setup uses harvested energy from HF field of a smartphone or reader, to switch an electrochromic display after rectification to prove authenticity of a product. Our novelty is in upscaling the manufacturing process to be fully printable and R2R processable in high-throughput conditions simulating industrial environment, i.e. in pilot scale. The printing workflow consisted of 11 R2R printed layers, all done in sufficient quality and registration. The printed antennas showed sheet resistance values of 32.9±1.9 mΩ/sq. The final yield was almost 1500 fully printed devices, and in R2R assembly over 1400 labels were integrated with 96.5% yield. All the assembled tags were readable with mobile phone NFC reader. The optical contrast (ΔE*) measured for the ECDs was over 15 for all the printed displays, a progressive switching time with a colour change visible in less than 5 s. The smart tag is ITO-free, plastic-free, fully printed in R2R and has a good stability over 50 cycles and reversible colour change from light to dark blue.

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Ogunade, Ibukun M., and Megan McCoun. "Average daily gain divergence in beef steers is associated with altered plasma metabolome and whole blood immune-related gene expression." Translational Animal Science 4, no. 3 (2020). http://dx.doi.org/10.1093/tas/txaa074.

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Abstract We evaluated the plasma amine/phenol- and carbonyl-metabolome and whole-blood immune gene expression profiles in beef steers with divergent average daily gain (ADG). Forty-eight Angus crossbred beef steers (21 days postweaning; 210 ± 8.5 kg of body weight) were fed the same total mixed ration ad libitum for 42 days with free access to water. After 42 days of feeding, the steers were divided into two groups of lowest (LF: n = 8) and highest ADG (HF: n = 8). Blood samples were taken from all steers. The blood samples from LF and HF steers were used for further analysis. A subsample of the whole blood was immediately transferred into RNA-protect tubes for RNA extraction and messenger RNA expressions of 84 genes involved in innate and adaptive immune responses. Another subsample of the whole blood was immediately centrifuged to harvest the plasma for subsequent metabolome analysis. The average daily dry matter intake of the steers in LF and HF was 6.08 kg ± 0.57 and 6.04 kg ± 0.42, respectively, and was similar between the two groups (P = 0.72). The ADG (1.09 kg ± 0.13) of LF was lower (P = 0.01) than that of HF (1.63 kg ± 0.20). The expressions of 10 immune-related genes were upregulated (FC ≥ 1.2; P ≤ 0.05) in HF steers; these genes were involved in viral pathogen recognition and eradication, defense against intracellular and extracellular pathogens and parasites, and immune response homeostasis. A total number of 42 carbonyl-containing metabolites and 229 amine/phenol-containing metabolites were identified in the plasma samples of both groups. No alteration in carbonyl-metabolome was detected. Ten metabolites with immunomodulatory, anti-inflammatory, and reactive oxygen-scavenging properties were greater (FDR ≤ 0.05) in HF steers, whereas eight metabolites including arginine, phenylalanine, guanidoacetic acid, and aspartyl-threonine were greater in LF steers. This study demonstrated that beef steers with divergent ADG had altered plasma amine/phenol metabolome and immune-related gene expressions in the blood. Notably, plasma metabolites and immune-related genes of great health benefits were greater in steers with high ADG.

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Liu, Qian, Guochun Zhao, Jianhua Li, et al. "Provenance of early Paleozoic sedimentary rocks in the Altyn Tagh orogen: Insights into the paleoposition of the Tarim craton in northern Gondwana associated with final closure of the Proto−Tethys Ocean." GSA Bulletin, June 30, 2020. http://dx.doi.org/10.1130/b35576.1.

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The evolution of the northern margin of Gondwana, especially to the north of India and Australia, remains enigmatic. Much controversy concerns when and where the Tarim craton was amalgamated with northern Gondwana due to final closure of the North and South Altyn Oceans (two branches of the Proto−Tethys Ocean between southeastern Tarim and northern Gondwana). This study addressed these issues through systematic field-based zircon U-Pb dating and Hf-isotope analyses of early Paleozoic sedimentary rocks in the Altyn Tagh orogen. New dating results reveal depositional ages from ca. 494 to 426 Ma. Provenance tracing indicates the ca. 494−477 Ma samples were dominantly sourced from local Altyn Tagh areas to the south of the North Altyn Ocean, whereas the ca. 465−449 Ma samples are characterized by a significant increase in ca. 2.7−2.4 Ga, 2.0−1.7 Ga, and 840−780 Ma detrital zircons, indicating an augmented supply of detritus from the Tarim craton to the north of the North Altyn Ocean. This change indicates a major provenance shift from a single to multiple source regions between ca. 477 and 465 Ma, marking the timing of the final closure of the North Altyn Ocean. Zircon U-Pb and Hf-isotopic data from the ca. 444−426 Ma samples resemble those from the ca. 465−449 Ma samples, suggesting local sediment recycling related to a postcollisional regime. Considering the South Altyn Ocean and other branches of the Proto−Tethys Ocean, we infer that the entire Proto−Tethys Ocean might have been progressively closed at ca. 500−420 Ma, leading to the amalgamation of most East Asian blocks with northern Gondwana. Detrital zircon U-Pb and Hf-isotope comparisons indicate that Tarim shared a North Indian affinity with many East Asian terranes (such as North Qilian, North Qinling, South China, Indochina, South Qiangtang, etc.), rather than with Arabia-Iran or other terranes (e.g., Lhasa and Sibumasu) that were adjacent to western Australia along the northern margin of Gondwana.

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Gupta, Kapil, Aleksandra A. Watson, Tiago Baptista, et al. "Architecture of TAF11/TAF13/TBP complex suggests novel regulation properties of general transcription factor TFIID." eLife 6 (November 7, 2017). http://dx.doi.org/10.7554/elife.30395.

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General transcription factor TFIID is a key component of RNA polymerase II transcription initiation. Human TFIID is a megadalton-sized complex comprising TATA-binding protein (TBP) and 13 TBP-associated factors (TAFs). TBP binds to core promoter DNA, recognizing the TATA-box. We identified a ternary complex formed by TBP and the histone fold (HF) domain-containing TFIID subunits TAF11 and TAF13. We demonstrate that TAF11/TAF13 competes for TBP binding with TATA-box DNA, and also with the N-terminal domain of TAF1 previously implicated in TATA-box mimicry. In an integrative approach combining crystal coordinates, biochemical analyses and data from cross-linking mass-spectrometry (CLMS), we determine the architecture of the TAF11/TAF13/TBP complex, revealing TAF11/TAF13 interaction with the DNA binding surface of TBP. We identify a highly conserved C-terminal TBP-interaction domain (CTID) in TAF13, which is essential for supporting cell growth. Our results thus have implications for cellular TFIID assembly and suggest a novel regulatory state for TFIID function.

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Qian, Tao, Zongxiu Wang, Yu Wang, Shaofeng Liu, Wanli Gao, and Wangpeng Li. "Jurassic evolution of the Qaidam Basin in western China: Constrained by stratigraphic succession, detrital zircon U-Pb geochronology and Hf isotope analysis." GSA Bulletin, February 26, 2021. http://dx.doi.org/10.1130/b35757.1.

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The formation and evolution of an intracontinental basin triggered via the subduction or collision of plates at continental margins can record intracontinental tectonic processes. As a typical intracontinental basin during the Jurassic, the Qaidam Basin in western China records how this extensional basin formed and evolved in response to distant subduction or collisional processes and tectonism caused by stresses transmitted from distant convergent plate margins. The Jurassic evolution of the Qaidam Basin, in terms of basin-filling architecture, sediment dispersal pattern and basin properties, remains speculative; hence, these uncertainties need to be revisited. An integrated study of the stratigraphic succession, conglomerates, U-Pb geochronology, and Hf isotopes of detrital zircons was adopted to elucidate the Jurassic evolutionary process of the Qaidam Basin. The results show that a discrete Jurassic terrestrial succession characterized by alluvial fan, braided stream, braided river delta, and lacustrine deposits developed on the western and northern margins of the Qaidam Basin. The stratigraphic succession, U-Pb age dating, and Hf isotope analysis, along with the reconstructed provenance results, suggest small-scale distribution of Lower Jurassic sediments deposited via autochthonous sedimentation on the western margin of the basin, with material mainly originating from the Altyn Tagh Range. Lower Jurassic sediments in the western segment of the northern basin were shed from the Qilian Range (especially the South Qilian) and Eastern Kunlun Range. And coeval sediments in the eastern segment of the northern basin were originated from the Quanji massif. During the Middle-Late Jurassic, the primary source areas were the Qilian Range and Eastern Kunlun Range, which fed material to the whole basin. The Jurassic sedimentary environment in the Qaidam Basin evolved from a series of small-scale, scattered, and rift-related depressions distributed on the western and northern margins during the Early Jurassic to a larger, extensive, and unified depression occupying the whole basin in the Middle Jurassic. The Altyn Tagh Range rose to a certain extent during the Early Jurassic but lacked large-scale strike-slip tectonism throughout the Jurassic. At that time, the North Qaidam tectonic belt had not yet been uplifted and did not shed material into the basin during the Jurassic. The Qaidam Basin experienced intracontinental extensional tectonism with a northeast-southwest trend throughout the Jurassic in response to far-field effects driven by the sequential northward or northeastward amalgamation of blocks to the southern margin of the Qaidam Block and successive accretion of the Qiangtang Block and Lhasa Block onto the southern Eurasian margin during the Late Triassic−Early Jurassic and Late Jurassic−Early Cretaceous, respectively.

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Mills, Kayla M., Allan P. Schinckel, Jebadiah G. Stevens, Theresa M. Casey, and Kara R. Stewart. "Evaluation of on-farm indicators of gilt reproductive performance potential at 21 days of age1." Translational Animal Science 4, no. 4 (2020). http://dx.doi.org/10.1093/tas/txaa210.

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Abstract Selection of replacements for the sow herd is one of the most important facets in swine production. Although our current methods of selection are effective, there is still a large amount of variation in sow reproductive performance traits such as pigs per sow per year (PSY). Therefore, the objective of this study was to determine if on-farm phenotypic traits at 21 d postnatal (PN) or perinatal environmental factors could predict sow reproductive performance. Data were prospectively collected from 2,146 gilts born on a commercial sow production facility and included birth and weaning weights, vulva length and width at 21 d PN, birth and nursing litter size, days nursed, average daily gain from birth to weaning, and age at first estrus. Of the initial animals, 400 (17%) were selected for the sow herd, 353 remained after removal of animals culled for non-reproductive reasons. Animals were assigned to 1 of 5 reproductive performance categories based on observation of estrus or pigs per sow per year (PSY) across two farrowings: High Fertility (HF; 23%; n = 82; ≥26 PSY), Middle Fertility (MF2; 12%; n = 43; 20–25 PSY), Low Fertility (MF3; 15%; n = 54; &lt;20 PSY), Infertile-Estrus (IFe; 10%; n = 36; estrus, no pregnancy), and Infertile-No Estrus (IFno; 39%; n = 138; no estrus, no pregnancy). Generalized linear model analysis indicated vulva width (P = 0.03) was related to PSY, however, it only explained 1.5% of the total variation in PSY. To determine if preweaning variables were predictive of gilt fertility outcome, animals were grouped as those that became pregnant (n = 179) or not (n = 174). Vulva width tended to be greater in fertile animals versus infertile (P = 0.07). Binomial regression analysis revealed a positive relationship between vulva width and gilt fertility, however, this relationship is not strong enough to make sow herd selection decisions.

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Journal articles on the topic 'HF tags'

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