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Wei Zhonghua,Zhao Xiaolin,Ren Guodong 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
Eight new species of the genus Laena Dejean, 1821 (subfamily Lagriinae, tribe Laenini) from Yunnan Province of China were described and illustrated: L. acutidentata Wei & Ren, sp. nov., L. brevicarina Wei & Ren, sp. nov., L. dongchuana Zhao & Ren, sp. nov., L. glabridentipa Wei & Ren, sp. nov., L. nuda Zhao & Ren, sp. nov., L. raropuncta Wei & Ren, sp. nov., L. rugulosa Wei & Ren, sp. nov. and L. spinicla Wei & Ren, sp. nov.. Illus trations and a key to the known Laena species from Yunnan Province are provided.
Caixia Yuan,Maxim Nabozhenko,Guodong Ren 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.4
The genus Erulipus Fairmaire, 1903 (previously in the subfamily Tenebrioninae, tribe Helopini), after the study of the type species (Erulipus fruhstorferi Fairmaire, 1903), is transferred to the genus Ainu Lewis, 1894 (subfamily Stenochiinae, the tribe Cnodalonini) as a subgenus. Consequently, two new combinations are established: Ainu (Erulipus) fruhstorferi (Fairmaire, 1903), comb. nov. and Ainu (s. str.) multicolor (Pic, 1927), comb. nov. The syntypes of Erulipus fruhstorferi and Erulipus multicolor Pic, 1927 are studied and the new synonym is proposed: Erulipus fruhstorferi = Ainu grandis Ren and Yuan, 2005, syn. nov. Two new species are described from China: Ainu linwenxini Nabozhenko & Ren, sp. nov. (Taiwan) and Ainu basifemoratum Nabozhenko & Ren, sp. nov. (Yunnan). Both the new species are closely related to A. sichuanum Ren and Yuan, 2015.
Wei Zhonghua,Zhao Xiaolin,Ren Guodong 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.2
The genus Laena Dejean, 1821 belongs to the subfamily Lagriinae, tribe Laenini. Four new species of this genus are described and illustrated from Sichuan under the following name: Laena ceratina Wei & Ren, sp. nov., Laena edentata Zhao & Ren, sp. nov. (from Sichuan and Qinghai), Laena latitarsia Wei & Ren, sp. nov. (from Sichuan and Yunnan) and Laena sufflofemora Wei & Ren, sp. nov.. A key to the known Laena species from Sichuan is provided.
Shumei Lou,Guodong Ren,Hui Zhang,Baojia Cheng,Peng Chen 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
Carbon fiber composites have excellent properties and can be used in automobile, aircraft, rail transit and otherfields of lightweight, but Its price is very expensive. For reducing the cost and improving the comprehensive properties ofmaterials which contain carbon fiber composites and used in the fields mentioned above, carbon fiber (CF) and glass fiber(GF) were mixed to replace pure carbon fiber composites. Three different methods were used to treat the surface of carbonfiber (ultrasonic surface cleaning, liquid phase oxidation of concentrated nitric acid and ultrasonic combined concentratednitric acid oxidation) and different contents of silane coupling agent KH-550 (0 %, 0.2 %, 0.5 %, 1.0 %) were used to treatthe glass fiber, and the laminated plate was prepared by Vacuum Assisted Resin Transfer Molding (VARTM). The CF/GFhybrid composite laminates were prepared by combining the best surface treatment method and the best stacking scheme ofcarbon fiber and glass fiber. The tests of mechanical properties and the observation of SEM fracture morphology show that,the surface treatment of CF by ultrasonic combined concentrated nitric acid oxidation is the best; mechanical properties of GFreinforced composite were the best when surface treatment was carried out with 0.5 % silane coupling agent; Compared withthe untreated samples, the mechanical properties of CF/GF hybrid composite laminates after surface treatment wereimproved, the thickness and weight are reduced. Thus, the weight reduction and better performances were achieved.
Ai-min Ren,Yu Zhang,Weiwei Yu,Kai Zhao,Zhiru Hu,Zhiquan Zhang,Guodong Feng,Zhi-Guang Song 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-
In this article, a series of coumarin derivativefluorescent probes have been synthesized, which can realizesimple, rapid and sensitive detection of Pd2+. We tested thefluorescence properties of threefluorescentprobes, (E)-N0-(((4-chloropyridin-2-yl) methylene)-7-(diethylamino)-2-oxo-2H-chromene-3-carbohy(CMDCC) has the betterfluorescence properties and anti-interference ability. Then, CMDCC as thefluorescence probe for detection of Pd2+ was systematic studied. Under optimized conditions, this probehas a wide pH range, a lower detection limit (4.4510 8 mol L-1), and a faster response speed (3 min). Inthe Pd2+ concentration range of 0.1 5 mmol L-1, thefluorescence intensity of this probe and concentrationof Pd2+ show a good linear response. In this work, Pd2+ content in organic waste liquid was successfullydetected and a standard addition test was also performed. The satisfactory recovery rate was obtained. Moreover, it can be observed with naked eyes that the palladium ion changes the solution color of CMDCCfrom green to red. This color change can easily be compared with other metal salts. It indicates thatCMDCC can also detect Pd2+ by colorimetric method. Therefore, CMDCC should be used to rapidly,conveniently detect Pd2+ in environmental samples.
Zhonghua Wei,Guodong Ren 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.1
The genus Anaedus Blanchard, 1842 from China is revised. Anaedus serratus sp. nov. (Yunnan) and Anaedus nonedgus sp. nov. (Anhui, Hubei, Zhejiang) are described and illustrated. In addition to, a key to Chinese Anaedus species is given, and their geographical locations have been mapped.
Electronic Structure and Half-metallicity of the Heusler Alloy Co2ZrGe
Songtao Li,Yang Liu,Zhi Ren,Xiaohong Zhang,Guodong Liu 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.7
The site preference, the electronic structure and the magnetic properties of Co2ZrGe have beenstudied by using first-principles calculations, and the stabilities of the Cu2MnAl-type and theHg2CuTi-type structures have been tested in this respect. The Cu2MnAltype structure is morefavorable than the Hg2CuTitype structure for the Co2ZrGe compound, and the equilibrium latticeparameter of the Cu2MnAltype Co2ZrGe alloy is 6.06 °A. The Co2ZrGe alloy is found to have anenergy gap in the minority spin direction at the Fermi level (EF ) and the majority spin band showsstrongly metallic characteristic. As a result, the Co2ZrGe alloy is predicted to be a half-metalwith 100% spin polarization of the conduction electrons at the EF . The calculated total magneticmoment is 2.00μB per unit cell, which is in line with the Slater-Pauling curve of Mt = Zt −24. TheCo atom-projected spin moment is 1.02μB, which mainly determines the total moment. Simultaneously,the Zr and the Ge atom moments are −0.08μB and 0.04μB, respectively. The Co2ZrGe alloymay be a promising material for application in future spintronics devices.
Investigation on crack propagation properties of flange-stiffened plate structure in a sleeve
Qinglin Lian,Huaji Wang,Xiaowei Ren,Xiaochen Fan,Dingshi Li,Jinbiao Zhao,Long Ju,Guodong Zhang 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.11
A 3D FE model has been developed to investigate the crack propagation properties of flange-stiffened plate structure in a sleeve used for loading transition, according to practical observations of the crack morphology. The stress intensity factor (SIF) was applied to analyze the crack propagation properties along crack tip in different positions of the sleeve;simulation models including either one crack or multiple cracks were studied. Results showed that crack formation had insignificant influence on the structural effective stress and deformation variations. The faces of the crack formed at the bolt hole edge were opened, meanwhile the crack possessed the highest potential to grow, while cracks in the connecting fillet between flange and stiffened plate and the flange mounting interface were less likely to propagate. Compared with the one-crack model, when multiple cracks co-existed there were limited changes on the crack respective propagation properties.
Description of Six Blaps Pupae (Coleoptera: Tenebrionidae: Blaptini) From China
Xinjie Tang,Jianying Zhang,Youzhi Yu,Guodong Ren,Long Jia 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.1
The pupal stage of six Blaps species occurring in the northwest China are described and illustrated in detail: Blaps kiritshenkoi Semenov and Bogatchev, 1936, B. rugosa Gebler, 1825, B. miliaria Fischer von Waldheim, 1844, B. gobiensis Frivaldszky, 1889, B. caraboides caraboides Allard, 1882, and B. femoralis Fischer von Waldheim, 1844. A key to the pupae of Blaps is provided.
Huang Lu,Xia Li,Nie Tiejian,Cui Bozhou,Lu Jianjun,Lu Fangfang,Fan Feiyan,Ren Dongni,Lu Yuan,Gao Guodong,Yang Qian 생화학분자생물학회 2024 Experimental and molecular medicine Vol.56 No.-
Traumatic brain injury (TBI) is a major cause of death and disability in adults. The pathological process of TBI involves a multifactorial cascade in which kinases have been proven contribute to interactions between relevant factors and amplification of signaling cascades. Cyclin-dependent kinase 5 (Cdk5) is a promising kinase that has been implicated in various brain disorders, including TBI. However, the mechanism by which Cdk5 induces neuronal damage remains unclear. Here, we show for the first time that Drosha, a key enzyme in microRNA biogenesis, is a pivotal substrate of abnormally activated Cdk5. Cdk5-mediated phosphorylation decreases Drosha expression and exacerbates nerve injury in TBI. We proved that maintaining Drosha expression via the administration of repurposed Cdk5 inhibitors that were previously studied in clinical trials is a promising approach for the early treatment of TBI. Together, our work identifies Drosha as a novel target for neuroprotective strategies after TBI and suggests Cdk5-mediated regulation of Drosha expression as a potential therapeutic strategy for early TBI intervention.