197 research outputs found
A method for correcting the GPS navigation bit transitions in the FY-GNOS-II GNSS-R payload
No full textGlobal Navigation Satellite System Reflectometry (GNSS-R) is a remote sensing technology that uses GNSS signals reflected over Earth’s surface, offering advantages such as high spatio-temporal resolution and cost-effectiveness. GPS navigation signals convey navigation information through the navigation bits, in which phase jumps occur randomly at 20 ms interval. However, navigation information is meaningless in GNSS-R and limits the coherent integration time. This study presents a technique to mitigate the impact of the navigation bits on the generation of DDMs by using the raw GNSS-R data from the Fengyun-3E (FY-3E) satellite. Sample results show that, after correcting for the navigation bits, the signal-to-noise ratio (SNR [dB]) of DDMs increased by ~0.4 dB over sea to up to 3 dB over sea ice, showing that this improvement is very significant for coherent targets. The proposed navigation bit correcting method in this study significantly improves the usability of these DDMs, and opens the door to other applications that require larger integration times.The authors would like to acknowledge the National Satellite Meteorological Center, China Meteorological Administration for providing the FY-3E/GNOS-II data. This research has also been partially funded by the National Natural Science Foundation of China under Grants 42174022 (PI: Prof. Kegen Yu); the Fundamental Research Funds for the Central Universities 2023XSCX047, Postgraduate Research & Practice Innovation Program of Jiangsu Province KYCX23_2752, Graduate Innovation Program of China University of Mining and Technology 2023WLKXJ165 (Author: Changyang Wang); the project “GENESIS: GNSS Environmental and Societal Missions – Subproject UPC”, Grant PID2021-126436OB-C21 funded by the Ministerio de Ciencia e Investigación (MCIN)/Agencia Estatal de Investigación (AEI)/10.13039/501100011033 and EU EDRF “A way to make Europe”.Peer ReviewedPostprint (author's final draft
Dascillus nigronotatus
No full textDascillus nigronotatus (Pic, 1914) Specimens examined: Hubei Province, Changyang, Hejiaping, Qinggangping Vill., 2-vii-2012, 1000 m, Mingwen Sun leg. (1 ♀, YZU); Hubei Province, Shennongjia, Qianguping, 10-vi-2018, Ping Wang & Lei Li leg (3 ♀♀, YZU). General distribution: China (Guizhou, Hubei, Yunnan); Vietnam.Published as part of Jin, Zhenyu, Qin, Zhao & Ślipiński, Adam, 2018, New records of the family Dascillidae (Coleoptera) from China, pp. 396-400 in Zootaxa 4471 (2) on page 398, DOI: 10.11646/zootaxa.4471.2.13, http://zenodo.org/record/143964
Complete genome resource of endophytic Bacillus cereus GUCC3, a promising plant growth promoting bacterial strain on passion fruit (Passiflora edulis Sims)
No full textTeratura (Megaconema) geniculata
No full text2. Teratura (Megaconema) geniculata (Bey -Bienko, 1962) (Fig. 13) Xiphidiopsis phyllocerca Tinkham. 1944. Proc. U. S. Nat. Mus., 94: 507, 508, 512 – 514. Xiphidiopsis geniculata Bey-Bienko. 1962. Trudy Zool. Inst. Akad. Nauk. SSSR, 30: 131. Teratura (Megaconema) geniculata Gorochov. 1993. Zoosyst. Rossica. 2 (1): 90; Eades & Otte. 2010. Orthoptera Species File Online. Version 2.0/ 3.5. Material examined. 533 Ƥ, Baligou, Huixian, Henan, 13 July, 2002, collected by Xiu-Juan Yang; 434 Ƥ, Tianquan, Sichuan, 27 July, 2004, 23, Yonghong, Mabian, Sichuan, 21 July, 2004, collected by Fu-Ming Shi; 1 Ƥ, Guanmenshan, Shennongjia, Hubei, 2 Aug., 2002, collected by Yan-Lin Chang; 23, Nanmuping, Changyang, Hubei, 12 Aug., 2005, collected by Yan Kong; 1 Ƥ, Songyuanping, Changyang, Hubei, 14 July, 2005, collected by Li-Ping Yang; 1 Ƥ, Muyuzhen, Shennongjia, Hubei, 14 Aug., 2004, collected by Qiu-Feng Wang; 1 Ƥ, Badagongshan, Sangzhi, Hunan, 10 Aug., 2004, collected by Jian-Feng Wang and Ji-Liang Wang; 1 Ƥ, Zhangjiajie, Hunan, 8 Aug., 200, collected by Fu-Ming Shi; 2 Ƥ, Meigu, Sichuan, 14 Aug., 1998, collected by Fu-Ming Shi; 13, Jinfoshan, Nanchuan, Chongqing, 23 July, 2003, collected by Jian-Feng Wang; 131 Ƥ, Qingchengshan, Dujiangyan, Sichuan, 24 July, 1997, collected by Fu-Ming Shi; 1 Ƥ, Fanjingshan, Guizhou, 3 Aug., 2001, collected by Fu-Ming Shi; 1 Ƥ, Taizhong, Taiwan, 15 Aug., 2006, collected by Xi-Cui Du. Distribution. China (Anhui, Chongqing, Guizhou, Henan, Hubei, Hunan, Sichuan, Shaanxi, Taiwan)Published as part of Qiu, Ming & Shi, Fu-Ming, 2010, Remarks on the species of the genus Teratura Redtenbacher, 1891 (Orthoptera: Meconematinae) from China, pp. 43-50 in Zootaxa 2543 on pages 44-45, DOI: 10.5281/zenodo.19671
Towards a predictive kinetic model of 3-ethyltoluene: Evidence concerning fuel-specific intermediates in the flow reactor pyrolysis with insights into model implications
No full textTo reveal insights into high temperature kinetics of dialkylaromatics, a pyrolysis investigation of 3ethyltoluene in a flow reactor together with its reaction kinetics are presented in this work. Concentrations and chemical structures of specific species covering temperature range from 796 to 1383K at the pressure of 30 and 760 Torr were recorded and quantified by using synchrotron vacuum ultraviolet photoionization molecular-beam mass spectrometry (VUV-PI-MBMS). Important C 8 and C 9 fuel-specific intermediates relevant to primary decomposition of 3-ethyltoluene and isomerization of methylbenzyl and ethylbenzyl radicals were detected and identified. The kinetic model interpreting high temperature pyrolysis chemistry of 3-ethyltoluene was developed and reasonably predicted the measurements in this work. The model analyses reveal that the methyl-dissociated reaction from the ethyl group of 3-ethyltoluene is dominant in the fuel decomposition at low pressure, while the fuel is mainly consumed by hydrogen abstraction reactions at atmospheric pressure. The experimental observations of three methylbenzyl isomers, o -xylylene, p -xylylene, styrene and benzocyclobutene provide evidence for the relationships between products involving isomerization of methylbenzyl radicals, formation of xylylenes and decomposition of o -xylylene. The fuel structure effects of 3-ethyltoluene and m -xylene are revealed by comparing the pyrolysis behaviors in both cases. It has been found that the m -methylbenzyl-generating channel in the 3-ethyltoluene pyrolysis improved the reaction reactivity initially. Furthermore, the fuel with longer substituent ethyl group facilitates the formation of cycloalkenes and aromatics.& COPY; 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved
“Realization–Feedback” Path of Ecological Product Value in Rural Areas from the Perspective of Capital Recycling Theory: A Case Study of Zhengjiabang Village in Changyang County, China
No full textTransforming ecological products into sources of economic value can help mitigate the tension between environmental conservation and economic growth. Using the capital cycle theory and the unique qualities of eco-friendly items, this study utilizes a case study approach, focusing on Zhengjiabang Village located in Changyang, Hubei Province. Meanwhile, we build a value realization chain of ecological products by combining the practical process of the village. On this basis, we reveal the roles of each subject and object in the evolutionary process, from ecological resources to ecological products. We also identify the key issues of eco-industrial expansion and spatial evolution. Taking the industrialization of ecological capital as the key, we add a step of value feedback to create a cycle of ecological product value realization and strengthen the sustainability of capital and industry. Ultimately, we aim to promote the transformation of ecological environmental advantages into economic advantages, and provide a new concept able to promote the construction of endogenous mechanisms for realizing the value of ecological products in rural areas
Biodegradable polymeric micelles coencapsulating paclitaxel and honokiol: a strategy for breast cancer therapy in vitro and in vivo
No full textNing Wang, Zhihan Wang,* Shihong Nie,* Linjiang Song, Tao He, Suleixin Yang, Xi Yang, Cheng Yi, Qinjie Wu, Changyang Gong State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, People’s Republic of China *These authors contributed equally to this work Abstract: The combination of chemotherapy drugs attracts more attention in clinical cancer trials. However, the poor water solubility of chemotherapeutic drugs restricts their anticancer application. In order to improve antitumor efficiency and reduce side effects of free drugs, we prepared paclitaxel (PTX) and honokiol (HK) combination methoxy poly(ethylene glycol)–poly(caprolactone) micelles (P–H/M) by solid dispersion method against breast cancer. The particle size of P–H/M was 28.7±2.5 nm, and transmission electron microscope image confirmed that P–H/M were spherical in shape with small particle size. After being encapsulated in micelles, the release of PTX or HK showed a sustained behavior in vitro. In addition, both the cytotoxicity and the cellular uptake of P–H/M were increased in 4T1 cells, and P–H/M induced more apoptosis than PTX-loaded micelles or HK-loaded micelles, as analyzed by flow cytometry assay and Western blot. Furthermore, the antitumor effect of P–H/M was significantly improved compared with PTX-loaded micelles or HK-loaded micelles in vivo. P–H/M were more effective in inhibiting tumor proliferation, inducing tumor apoptosis, and decreasing the density of microvasculature. Moreover, bioimaging analysis showed that drug-loaded polymeric micelles could accumulate more in tumor tissues compared with the free drug. Our results suggested that P–H/M may have potential applications in breast cancer therapy. Keywords: paclitaxel, honokiol, micelles, codelivery, breast cance
AtNBR1 is a selective autophagic receptor for atExo70E2 in Arabidopsis
No full textPh.D.Selective autophagy is a subcellular process whereby cytoplasmic materials are selectively sequestered into autophagosomes for subsequent delivery to the vacuole for degradation and recycling. Arabidopsis (Arabidopsis thaliana) next to BRCA1 gene 1 protein (AtNBR1) has been proposed to function as a selective autophagy receptor in plants, whereby AtNBR1 anchors the ubiquitinated targets to autophagosomes for degradation. However, the specific cargos of AtNBR1 remain elusive. We previously showed that Arabidopsis exocyst subunit EXO70 family protein E2 (AtExo70E2), a marker for Exocyst-positive organelle (EXPO), colocalized with the autophagosome marker Arabidopsis autophagy-related protein 8 (AtATG8) and was delivered to the vacuole for degradation upon autophagic induction. Here, through multiple analyses, I demonstrate that AtNBR1 is a selective receptor for AtExo70E2 during autophagy in Arabidopsis. First, two novel loss-of-function nbr1 CRISPR mutants (nbr1-c1 and nbr1-c2) showed an early-senescence phenotype under short-day growth conditions. Second, during autophagic induction, the vacuolar delivery of AtExo70E2 or EXPO was significantly reduced in nbr1 mutants compared to wild-type plants. Third, biochemical and recruitment assays demonstrated that AtNBR1 specifically interacted and recruited AtExo70E2 or its EXPO to AtATG8-positive autophagosomes in a UBA (ubiquitin-associated)-independent manner during autophagy. Taken together, our data indicate that AtNBR1 functions as a selective receptor in mediating vacuolar delivery of AtExo70E2 or EXPO in a UBA-independent manner in plant autophagy.選擇性自噬是一種細胞質物質被選擇性地包裹形成自噬體，隨後被遞送到液泡中進行降解和再迴圈的亞細胞過程。擬南芥NBR1蛋白（AtNBR1）被認為是植物中的選擇性自噬受體。在選擇性自噬中AtNBR1將泛素化的目標蛋白錨定在自噬體上以進行降解。但是到目前為止，AtNBR1選擇性自噬受體的具體目標蛋白仍不清楚。在之前的研究中，我們發現在自噬誘導下Exocyst陽性細胞器（EXPO）的標誌物擬南芥Exo70E2（AtExo70E2）與自噬體標誌物擬南芥ATG8蛋白（AtATG8）共定位，並被遞送至液泡進行降解。在這個研究中，我們提供了多種證據證明了在擬南芥自噬過程中，AtNBR1是AtExo70E2的選擇性自噬受體。首先，我們構建了功能缺失的nbr1 CRISPR突變體（nbr1-c1和nbr1-c2），並且發現這兩株突變體在短日生長條件下表現出早期衰老表型。其次，我們發現在自噬誘導條件下，nbr1突變體中的AtExo70E2或EXPO的液泡遞送相比野生型對照有明顯的減少。再次，生化實驗表明AtNBR1在自噬過程中以非UBA結構域依賴的方式與AtExo70E2或EXPO結合並將AtExo70E2招募到自噬體上。綜上，我們的研究表明，AtNBR1作為選擇性自噬受體，在植物自噬中通過非UBA結構域依賴的方式介導AtExo70E2或EXPO的選擇性自噬和液泡遞送。Ji, Changyang."November 2020."Thesis Ph.D. Chinese University of Hong Kong 2021.Includes bibliographical references (leaves 62-71).Abstracts also in Chinese.Title from PDF title page (viewed on March 23, 2022)
- …
