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JOURNAL ARTICLE
Sixi Zhu, Suxia Sun, Wei Zhao, Xiuqin Yang, Huan Mao, Luying Sheng
Selenium pollution can lead to a decrease in crop yield and quality. However, the toxicological mechanisms of high Se concentrations on crops remain unclear. This study aimed to elucidate the physiological and proteomic molecular responses to Se stress in Oryza sativa. The results showed that under selenium stress, enzymatic activities of catalase, peroxidase, and superoxide dismutase in indica rice decreased by 61%, 28%, and 68%, respectively. The contents of non-enzymatic antioxidant substances ascorbic acid, glutathione, cysteine, proline, anthocyanidin, and flavonoids were decreased by 13%, 39%, 46%, 32%, 20%, and 5%, respectively, which significantly inhibited the antioxidant stress process of plants...
April 27, 2024: Chemosphere
#2
JOURNAL ARTICLE
Jin-Bu Li, Qiang Liu, Sai Ma, Yue-Ying Wang, Xing-Zhou Liu, Chao-Wei Wang, Da-Jiang Wang, Zhuang-Zhuang Hu, Jia-Wen Gan, Xiu-Yun Zhu, Bao-Ping Li, Mao-Zhu Yin, Ya-Nan Zhang
In insects, chemosensory proteins (CSPs) play an important role in the perception of the external environment and have been widely used for protein-binding characterization. Riptortus pedestris has received increased attention as a potential cause of soybean staygreen syndrome in recent years. In this study, we found that RpedCSP4 expression in the antennae of adult R. pedestris increased with age, with no significant difference in expression level observed between males and females, as determined through quantitative real-time polymerase chain reaction (qRT-PCR)...
May 2024: Pesticide Biochemistry and Physiology
#3
JOURNAL ARTICLE
Buguo Wang, Yongjie Zhang, Ya Wei, Min Liao, Haiqun Cao, Quan Gao
Plutella xylostella is an important pest showing resistance to various chemical pesticides, development of botanical pesticides is an effective strategy to resolve above problem and decrease utilization of chemical pesticides. Previous study showed that 2,3-dimethyl-6-(1-hydroxy)-pyrazine has significant repellent activity to P. xylostella adult which mainly effect to the olfactory system, however the molecular targets and mechanism are still unclear. Based on the RNA-Seq and RT-qPCR data, eight ORs (Odorant receptor) in P...
May 2024: Pesticide Biochemistry and Physiology
#4
JOURNAL ARTICLE
Xiaoyan Song, Gaomin Zhang, Chang Zhou
Efficient communication is crucial in reducing injuries and fatalities in coal mine accidents, necessitating the study of simulation methods for mine communication. When transceiver antennas are positioned close to the same side of the tunnel, the simulation results from the Ray Tracing (RT) method exhibit significant errors. Additionally, the Finite-Difference Time-Domain (FDTD) method demands substantial computational resources. In response to these challenges, we propose a RT-FDTD method, guided by the law of conservation of energy...
April 29, 2024: Scientific Reports
#5
JOURNAL ARTICLE
Yuhei Nishimura
The primary cilium, an antenna-like structure of cell membrane, detects various signals and regulates cellular functions such as proliferation and differentiation. The impairment of primary cilium is associated with the etiologies of diseases including cancer, obesity, and congenital anomalies. In this review, novel functions of trichoplein, a suppressor of ciliogenesis, on the regulation of adipose progenitors and fibro-adipogenic progenitors are focused. Trichoplein-knockout mice show resistance to high-fat diet-induced obesity and accelerated regeneration after skeletal muscle injury...
April 26, 2024: Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
#6
JOURNAL ARTICLE
Irene K R Tiong, Cher Chien Lau, Patrick Sorgeloos, Mimi Iryani Mat Taib, Tengku Sifzizul Tengku Muhammad, Muhd Danish-Daniel, Min Pau Tan, Liying Sui, Min Wang, Yeong Yik Sung
The potential functional role(s) of heat shock protein 70 (Hsp70) in the brine shrimp, Artemia franciscana, a crucial crustacean species for aquaculture and stress response studies, was investigated in this study. Though we have previously reported that Hsp70 knockdown may have little or no impact on Artemia development, the gestational survival and number of offspring released by adult females were impaired by obscuring Hsp70 synthesis. Transcriptomic analysis revealed that several cuticle and chitin synthetic genes were downregulated, and carbohydrate metabolic genes were differentially expressed in Hsp70-knockdown individuals...
April 29, 2024: Marine Biotechnology
#7
JOURNAL ARTICLE
Lauren Thomson, Hemin P Shah, Victoria Akinwotu Adewale, Alyssa Beise, Camryn Bliayang, Zuzanna Cioch, Mason Craig, Adell Crump, Maya Durdan, Madeleine Espinosa, Kaitlin Feda, Jami Feist, Alexis Fragoso, Genesys Haro, Breanna Hoffman, Paige Horne, Nathan Houha, Shirley Hounnou, Annabel Inman, Daniel Jakobsze, Yolanda Juarez-Morales, Yousuf Khan, Joshua Kohler, Reece Lawlor, Bethany Lieser, Ryan Loitz, Erik Martinez, Alexis Martinez, Michelle Martinez, Brandyn Maza, Brenda Mendoza, Steven Miller, Haniel Mngodo, Sarah O'Shea, Sarah N Piane, Ethan Raivala, Sophie Ruger, Abigail Singer, Jessica E Strand, Alexis Traylor, Asia Wright, Shawn McCabe, Sandesh S Pandit, Kayla Bieser, Paula Croonquist, Elizabeth E Taylor, Jacqueline Wittke-Thompson, Jacob D Kagey, Olivier Devergne
Genetic screens are valuable for identifying novel genes involved in the regulation of developmental processes. To identify genes associated with cell growth regulation in Drosophila melanogaster , a mutagenesis screen was performed. Undergraduate students participating in Fly-CURE phenotypically characterized the E.4.1 mutant which is associated with rough eyes and antennae overgrowth. Following complementation analysis and subsequent genomic sequencing, E.4.1 was identified as a novel mutant allele of GstE14 , a gene involved in ecdysone biosynthesis important for the timing of developmental events...
2024: microPublication. Biology
#8
JOURNAL ARTICLE
Bancha Luadang, Pisit Janpangngern, Khanet Pookkapund, Sitthichai Dentri, Monai Krairiksh, Chuwong Phongcharoenpanich
This research proposes a broadband unidirectional twin-element multiple-input-multiple-output (MIMO) antenna scheme for mid-band 5G and WLAN applications. The twin-element antenna scheme comprises two single-element antennas, and each single-element antenna consists of a T-shaped hemispherical feeding patch, left- and right-arm radiating patches, and a conjoined triangular ground plane. The twin-element MIMO antenna scheme is integrated with a laptop model functioning as the reflector. The measured impedance bandwidth (|S11 |, |S22 |≤ - 6 dB) are 55...
April 27, 2024: Scientific Reports
#9
JOURNAL ARTICLE
Fatih Dikmen, Tunç Dabak, Burcu Daşer Özgişi, Çiğdem Özenirler, Selim Can Kuralay, Selahattin Barış Çay, Yusuf Ulaş Çınar, Onur Obut, Mehmet Ali Balcı, Pınar Akbaba, Esma Gamze Aksel, Gökmen Zararsız, Edwin Solares, Vahap Eldem
Bumblebees are crucial pollinators, providing essential ecosystem services and global food production. The success of pollination services relies on the interaction between sensory organs and the environment. The antenna functions as a versatile multi-sensory organ, pivotal in mediating chemosensory/olfactory information, and governs adaptive responses to environmental changes. Despite an increasing number of RNA-sequencing studies on insect antenna, comprehensive antennal transcriptome studies at the different life stages were not elucidated systematically...
April 27, 2024: Insect Molecular Biology
#10
JOURNAL ARTICLE
Yewande Mariam Aragbaiye, Dustin Isleifson
In this article, we present new design techniques to improve the gain and impedance bandwidth of short backfire antennas. For the gain enhancement procedure, our approach was to flare the rim of the antenna, which simultaneously led to an increase in the impedance bandwidth of the antenna. Parametric studies were carried out to obtain the optimal flaring angle. The peak realized gain was obtained as 17.2 dBi with an impedance bandwidth of 55% (2.4 dB and 28.6% increase in gain and bandwidth, respectively, compared to the unflared antenna)...
April 22, 2024: Sensors
#11
JOURNAL ARTICLE
Mónica Zabala Haro, Ángel Martín Furones, Ana Anquela Julián, María Jesús Jiménez-Martínez
The interest in precise point positioning techniques using smartphones increased with the launch of the world's first dual-frequency L1/L5 GNSS smartphone, Xiaomi Mi 8. The smartphone GNSS antenna is low-cost, sensitive to multipath, and limited by physical space and design. The main purpose of this work is to determine the mechanical location and antenna performance in terms of radiation pattern in an anechoic chamber using a Vector Network Analyzer (VNA) and robotic positioning platform by varying the elevation and azimuth angles between the transmitter and smartphone GNSS antennas; the power received and satellite visibility are developed in an outdoor scenario...
April 17, 2024: Sensors
#12
JOURNAL ARTICLE
Brenda S de S Barbosa, Hugo A O Cruz, Alex S Macedo, Caio M M Cardoso, Filipe C Fernandes, Leslye E C Eras, Jasmine P L de Araújo, Gervásio P S Calvacante, Fabrício J B Barros
The presence of green areas in urbanized cities is crucial to reduce the negative impacts of urbanization. However, these areas can influence the signal quality of IoT devices that use wireless communication, such as LoRa technology. Vegetation attenuates electromagnetic waves, interfering with the data transmission between IoT devices, resulting in the need for signal propagation modeling, which considers the effect of vegetation on its propagation. In this context, this research was conducted at the Federal University of Pará, using measurements in a wooded environment composed of the Pau-Mulato species, typical of the Amazon...
April 16, 2024: Sensors
#13
JOURNAL ARTICLE
Chuan-Kuei Weng, Yu-Zhan Tsai, Artem Vilenskiy, Malcolm Ng Mou Kehn
Recently, the community has seen a rise in interest and development regarding holographic antennas. The planar hologram is made of subwavelength metal patches printed on a grounded dielectric board, constituting flat metasurfaces. When a known reference wave is launched, the hologram produces a pencil beam towards a prescribed direction. Most earlier works on such antennas have considered only a single beam. For the few later ones that studied multiple beams, they were achieved either by having each beam taken care of by a distinct frequency or by partitioning the hologram, thereby depriving each beam of the directivity it could have had it not shared the holographic aperture with other beams...
April 10, 2024: Sensors
#14
JOURNAL ARTICLE
Filipa Antunes, Amélia Ramos, Tiago Varum, João N Matos
Wireless communication systems have grown rapidly, moving towards being highly compact, intelligent, and flexible to adapt to changing operating requirements. Multifunctional and highly versatile antennas are key in this development to ensure system quality. Reconfigurable antennas, particularly regarding polarization, allow frequency reuse and enable the mitigation of fading effects. This work presents a square microstrip patch antenna operating in the ISM 5.8 GHz band with reconfigurable polarization by controlling its feeding...
April 10, 2024: Sensors
#15
JOURNAL ARTICLE
Zhixin Zhou, Hui Wang, Liang Lou
The surface acoustic wave (SAW) temperature sensor has received significant attention due to its wirelessly powered, battery-free, and chipless capabilities. This paper proposes a wireless sensing system comprising a one-port SAW resonator, helix antenna, and transceiver circuit. The SAW resonator used in this system is based on aluminum nitride (AlN) thin film, which exhibits high velocity and excellent piezoelectric properties. Simulations and experiments were conducted to investigate the performance of the designed SAW resonator...
April 18, 2024: Micromachines
#16
JOURNAL ARTICLE
Kun Deng, Naibo Zhang, Guangyao Yang, Yitong Li, Ruiliang Song, Ning Liu
A compact Ka-band antenna array has been proposed to realize broadband and high gain for millimeter-wave applications. The antenna array is divided into a multilayer composed of a driven slot patch layer and a parasitic patch array layer, which is excited by a mixed CPW-Slot-Couple feeding network layer. According to characteristic mode analysis, a pair of narrow coupling slots are introduced in the driven patch to move the resonant frequency of characteristic mode 3 to the resonant frequency of characteristic mode 2 for enhanced bandwidth...
April 16, 2024: Micromachines
#17
REVIEW
Alfredo Gomes Neto, Jefferson Costa E Silva, Joabson Nogueira de Carvalho, Custódio Peixeiro
A review on planar printed structures that are based on Matryoshka-like geometries is presented. These structures use the well-known principle of Matryoshka dolls that are successively nested inside each other. The well-known advantages of the planar printed technology and of the meandered nested Matryoshka geometries are combined to generate miniaturized, multi-resonance, and/or wideband configurations. Both metal and complementary slot structures are considered. Closed and open configurations were analyzed...
March 29, 2024: Micromachines
#18
JOURNAL ARTICLE
Lichao Zheng, Esha Maqbool, Zhanghua Han
Current optical tweezering techniques are actively employed in the manipulation of nanoparticles, e.g., biomedical cells. However, there is still huge room for improving the efficiency of manipulating multiple nanoparticles of the same composition but different shapes. In this study, we designed an array of high-index all-dielectric disk antennas, each with an asymmetric open slot for such applications. Compared with the plasmonic counterparts, this all-dielectric metasurface has no dissipation loss and, thus, circumvents the Joule heating problem of plasmonic antennas...
March 25, 2024: Micromachines
#19
JOURNAL ARTICLE
Xiaohong Han, Mingqing Weng, Wenchao Shi, Yingxin Wen, Yirong Long, Xinran Hu, Guoxi Ji, Yukun Zhu, Xuanye Wen, Feiping Zhang, Songqing Wu
The Japanese pine sawyer Monochamus alternatus serves as the primary vector for pine wilt disease, a devastating pine disease that poses a significant threat to the sustainable development of forestry in the Eurasian region. Currently, trap devices based on informational compounds have played a crucial role in monitoring and controlling the M. alternatus population. However, the specific proteins within M. alternatus involved in recognizing the aforementioned informational compounds remain largely unclear. To elucidate the spatiotemporal distribution of M...
April 22, 2024: International Journal of Molecular Sciences
#20
JOURNAL ARTICLE
Zhanyi Xu, Peitong Chen, Ru Yan, Guoxing Chen, Jiali Qian, Guonian Zhu, Mengli Chen, Yirong Guo
Phyllotreta striolata , the striped flea beetle, is one of the most destructive pests in Brassicaceae plants worldwide. Given the drawbacks associated with long-term use of chemical insecticides, green strategies based on chemical ecology are an effective alternative for beetle control. However, the lack of information on beetle ecology has hindered the development of effective biocontrol strategies. In this report, we identified two odorants, (S)-cis-verbenol and (-)-verbenone, which displayed significant attraction for P...
April 15, 2024: International Journal of Molecular Sciences
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