Hyperspectral Response of Rice Canopy and Prediction of Its Chlorophyll Content in Cold Regions

Jianqing Yuan,Zhongbin Su,Qingming Kong,Li Kang,Qi Zhang,Yu Zhang 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.10

Based on field trials of different nitrogen levels, rice canopy chlorophyll content and canopy spectrum of its booting stage were respectively measured using the nitrogen balance index meter and the hyperspectral imager, in the Northeast of china. Analyzing the rice canopy spectral response characteristics under nitrogen gradient after canopy reflectance spectra were first extracted and filtered for noise, then the original reflectance spectra were transformed into the first derivative reflectance for further analysis. Stepwise analysis was carried out to select sensitive bands for canopy chlorophyll content by making correlation analysis and to build spectral indexes, and then chlorophyll content prediction models were generated and tested. After comparing, the two models with better estimation precision were the model with reflectivity at 572nm as a variable and the model with the index DSI(572,682) constructed the reflectivity at 572 and 682nm as a variable, the coefficients of determination R2 were 0.733 and 0.694, the root mean square errors RMSE were 2.9656 and 3.0346, and the relative errors RE% were 7.07% and 7.43%.

A novel adaptive unscented Kalman Filter with forgetting factor for the identification of the time-variant structural parameters

Jianqing Bu,Yanzhe Zhang,Yong Ding,Lina Guo 국제구조공학회 2023 Smart Structures and Systems, An International Jou Vol.32 No.1

The parameters of civil engineering structures have time-variant characteristics during their service. When extremely large external excitations, such as earthquake excitation to buildings or overweight vehicles to bridges, apply to structures, sudden or gradual damage may be caused. It is crucially necessary to detect the occurrence time and severity of the damage. The unscented Kalman filter (UKF), as one efficient estimator, is usually used to conduct the recursive identification of parameters. However, the conventional UKF algorithm has a weak tracking ability for time-variant structural parameters. To improve the identification ability of time-variant parameters, an adaptive UKF with forgetting factor (AUKF-FF) algorithm, in which the state covariance, innovation covariance and cross covariance are updated simultaneously with the help of the forgetting factor, is proposed. To verify the effectiveness of the method, this paper conducted two case studies as follows: the identification of time-variant parameters of a simply supported bridge when the vehicle passing, and the model updating of a sixstory concrete frame structure with field test during the Yangbi earthquake excitation in Yunnan Province, China. The comparison results of the numerical studies show that the proposed method is superior to the conventional UKF algorithm for the time-variant parameter identification in convergence speed, accuracy and adaptability to the sampling frequency. The field test studies demonstrate that the proposed method can provide suggestions for solving practical problems.

Cardamonin Inhibited IL-1β Induced Injury by Inhibition of NLRP3 Inflammasome via Activating Nrf2/NQO-1 Signaling Pathway in Chondrocyte

( Jianqing Jiang ),( Mingsong Cai ) 한국미생물생명공학회(구 한국산업미생물학회) 2021 Journal of microbiology and biotechnology Vol.31 No.6

In this study we investigated the role and mechanism of cardamonin on IL-1β induced injury in OA. CHON-001 cells were treated with cardamonin and IL-1β and transfected with silencing nuclear factor erythroid 2-related factor 2 (siNrf2). Cell viability was detected by Cell Counting Kit-8 assay and flow cytometer assay was utilized for cell apoptosis assessment. IL-6, IL-8, TNF-α and Nrf2 mRNA expression was tested by qRT-PCR. Western blot was employed to evaluate MMP-3, MMP-13, Collagen II, Nrf2, NQO-1, NLRP3, Caspase 1 and apoptosis-associated speck-like protein containing a caspase-1 recruitment domain (ASC) protein levels. In CHON-001 cells, IL-1β suppressed cell viability and Collagen II level while promoting cell apoptosis and expression of pro-inflammatory cytokines (IL-6, IL-8, TNF-α), MMPs (MMP-3, MMP-13), NQO-1, and NLRP3 inflammasome (NLRP3, Caspase 1 and ASC), with no significant influence on Nrf2. Cardamonin reversed the effect of IL-1β on cell viability, cell apoptosis, pro-inflammatory cytokines, MMPs, Collagen II, and NLRP3 inflammasome levels. In addition, cardamonin advanced Nrf2 and NQO-1 expression of CHON-001 cells. SiNrf2 reversed the function of cardamonin on IL-1β-induced cell apoptosis and expression of proinflammatory cytokines, Nrf2, NQO-1, and NLRP3 inflammasome in chondrocytes. Taken together Cardamonin inhibited IL-1β induced injury by inhibition of NLRP3 inflammasome via activating Nrf2/NQO1 signaling pathway in chondrocyte.

Nine facultative endosymbionts in aphids. A review

Jianqing Guo,Séverin Hatta,Kang-lai He,Julian Chen,Frédéric Francis,Zhen-ying Wang 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.3

Aphids are frequently engaged in mutualistic associations with endosymbionts. Symbionts are bacterial or fungal microorganisms that can be obligate or facultative to aphids. Research showed facultative (or secondary) symbionts have numerous effects on their host aphids such as resistance to heat shock, parasitoids and fungus etc., which may consequently promote a co-evolution between symbionts and hosts. However, this symbiotic relation may be affected by several factors, such as the ability of symbionts to spread from aphids to others within and across populations, and the cost of infections for hosts. Moreover, aphid-symbionts interactions may be affected by aphid living environment such as its host plant, the presence of natural enemies or the temperature. Here we firstly described the functions of nine facultative symbionts (Serratia symbiotica, Hamiltonella defensa, Regiella insecticola, Rickettsia, Rickettsiella, PAXS (pea aphid X-type symbiont), Spiroplasma, Wolbachia and Arsenophonus) studied in aphids one by one, and discussed the associations between these symbionts and aphids, plants and environment. We aim to have a better knowledge of the roles the facultative symbionts play in aphid biology, ecology and evolution, which we believe can provide new inspirations for aphid control.

Efficiency calculation of the ⁿMCP with ¹⁰B doping based on mathematical models

Yang, Jianqing,Zhou, Jianrong,Zhang, Lianjun,Tan, Jinhao,Jiang, Xingfen,Zhou, Jianjin,Zhou, Xiaojuan,Hou, Linjun,Song, Yushou,Sun, XinLi,Zhang, Quanhu,Sun, Zhijia,Chen, Yuanbo Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.7

The ⁿMCP (Neutron sensitive microchannel plate) combined with advanced readout electronics is widely used in energy selective neutron imaging because of its good spatial and timing resolution. Neutron detection efficiency is a crucial parameter for the ⁿMCP. In this paper, a mathematical model based on the oblique cylindrical channel and elliptical pore was established to calculate the neutron absorption probability, the escape probability of charged particles and overall detection efficiency of ⁿMCP and analyze the effects of neutron incident position, pore diameter, wall thickness and bias angle. It was shown that when the doping concentration of the ⁿMCP was 10 mol%, the thickness of ⁿMCP was 0.6 mm, the detection efficiency could reach maximum value, about 24% for thermal neutrons if the pore diameter was 6 ㎛, the wall thickness was 2 ㎛ and the bias angle was 3 or 6°. The calculated results are of great significance for evaluating the detection efficiency of the ⁿMCP. In a subsequent companion paper, the mathematical model would be extended to the case of the spatial resolution and detection efficiency optimization of the coating ⁿMCP.

A ²³⁵U mass measurement method for UO₂ rod assembly based on the n/γ joint measurement system

Yang, Jianqing,Zhang, Quanhu,Su, Xianghua,Li, Sufen,Zhuang, Lin,Hou, Suxia,Huo, Yonggang,Zhou, Hao,Liu, Guorong Korean Nuclear Society 2020 Nuclear Engineering and Technology Vol.52 No.5

Fast-Neutron Multiplicity Counter based on Liquid Scintillator Detector can directly measure the fast neutron multiplicity emitted by UO₂ rod. HPGe gamma spectrometer; which has superior energy resolution; is routinely used for the gamma energy spectrum measurement. Combing Fast-Neutron Multiplicity Counter and HPGe γ-spectrometer, the n/γ joint measurement system is developed. The fast neutron multiplicity and gamma energy spectrum of UO₂ rod assemblies under different conditions are measured by the n/γ joint measurement system. The induced fission rate and the ²³⁵U abundance, thereby the ²³⁵U mass; can be obtained for UO₂ rod assemblies. The ²³⁵U mass deviation of the measured value from the reference value is less than 5%. The results show that the n/γ joint measurement system is effective and applicable in the measurement of the ²³⁵U mass in samples.

9,9-Dimethyl-9,10-dihydroacridine functionalized phosphoindole oxides with AIE property for OLED application

Li Jianqing,Zhuang Zeyan,Zhu Xiangyu,Zhao Zujin,BEN ZHONG TANG 한국정보디스플레이학회 2020 Journal of information display Vol.21 No.3

Aggregation-induced emission (AIE) has attracted widespread attention of late in academic and industrial circles owing to its diverse applications. Developing AIE-active materials for application in organic light-emitting diodes (OLEDs) has become an effective method of improving device efficiency and stability. In this work, two novel luminogens (PIO-α-DMAc and PIO-β-DMAc) consisting of 9,9-dimethyl-9,10-dihydroacridine and phosphoindole oxide were synthesized and systemically characterized. Their crystal structures, thermal stabilities, electronic structures, and electrochemical behaviors were studied. They showed apparent AIE properties and emitted strongly in the aggregated state. Non-doped and doped green OLEDs were fabricated using these luminogens as light-emitting layers, and exhibited high brightness, good electroluminescence efficiencies, and low turn-on voltages

A Temporal Formal Languages Model Based on Categorical Methods

Decheng Miao Jianqing Xi,Jindian Su 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.5

Temporal data model ensures the correctness, validity and compability of data in temporal database, and temporal formal languages model describes the semantic specification of temporal database, both two are core and basis of temporal database system design and development. The paper has exploited the quo of temporal data models and temporal formal languages models, presented FTDM (Formal Temporal Data Model) and L (FTDM) over FTDM by denotation semantics methods. Referring to thinking of software reuse, this paper proposed the definition of languages reuse. Based on the previous works the authors further made temporal formal languages models family {Li} with its particular categorical properties analyzed in this paper by categorical methods, also demonstrated rigorously inherent relationships between temporal formal languages models in {Li}. Their works provided a category theoretic method with universality and flexible expansion for temporal formal languages models, meantime, proposed solid theoretical foundations for design and development of temporal database system.

韓中儒敎文化認知:唐前“四史”韓半島文獻源流疏證及現代闡釋

이검청 ( Li Jianqing ),양쇠 ( Liang Zhao ) 경북대학교 퇴계연구소 2016 퇴계학과 유교문화 Vol.59 No.-

唐前“四史”中的韓半島文獻資料是東亞儒敎文化圈的歷史書寫。對韓國而言,這些屬於一種“域外之文獻”。 本文對唐前“四史”的韓半島文獻進行源流疏證與現代闡釋,認爲唐前韓半島文化認知有三個的基本特徵:一、從文獻增量看,相較于《史》《漢》而言,《三國志》《後漢書》中關於韓半島文獻的累增性,體現了對韓半島文化認知的漸進性特徵;二、從敍事模式上看,唐前“四史”中的《史記》《漢書》延續著“在重大歷史事件中展現人物性格、命運”的敍事模式變爲《三國志》《後漢書》中的“山海經”敍事模式,體現了對韓半島文化認知維度的更新性特徵;三從地理空間格局來看,唐前“四史”對韓半島地理空間的認知發生了兩次飜天覆地的變化。具體說,一是司馬遷首次將韓半島納入史學視野之中,形成了“漢四郡”地理空間的認知。二是陳壽《三國志》中將高句麗、東沃沮、三韓等地囊括其中,擴大了對樂浪郡(今屬朝鮮)周邊地域的認知。20世紀初,中韓兩國雖已超越了朝貢關係,但兩國在文化上依然同根同源,是東亞“儒敎文化圈”的重要組成部分。因此,唐前韓半島文化認知具有以下三個方面的現代價値:一、對於韓半島文化而言,唐前“四史”中的韓半島文獻是韓國文化悠久性的一大確證。二、唐前“四史”中的韓半島文獻是理解中韓文化的同源性一大鏡像。三、唐前“四史”中的韓半島文獻是中韓文化交流的見證。總之,唐前“四史”中的韓半島文獻成爲理解東亞儒敎文化的同源性,實現中韓文化對話的基礎。 Rooting from Chinese Pre-Tang Dynasty, China-Korea cultural cognition literature, for the South Korea, is foreign literature. By analyzing the Koreans’ Literature Origin of the Four Famous History Books in Pre-Tang Dynasty, this paper investigates that the Two Koreas’ cultural cognition before Tang Dynasty has there characteristics as follows:Firstly, the cognitive historical data is progressive. Secondly, the cognitive dimension is renewal. Finally, the cognitive pattern is pioneering. The significance of the cultural cognition has three important points: Firstly, for Korean culture, the Four Famous History Books in Pre-Tang Dynasty confirms the Korean culture has a long history. Secondly, the Korean literature is the mirror to understand the homology of China-Korea culture. Thirdly, the Korean literature is the witness of cultural communication between China and Korea.

Study of upfront surgery versus neoadjuvant chemotherapy followed by interval debulking surgery for patients with stage IIIC and IV ovarian cancer, SGOG SUNNY (SOC-2) trial concept

Rong Jiang,Jianqing Zhu,김재원,Jihong Liu,Kazuyoshi Kato,김희승,Yuqin Zhang,Ping Zhang,Tao Zhu,Daisuke Aoki,Aijun Yu,Xiaojun Chen,Xipeng Wang,Ding Zhu,Wei Zhang,Huixun Jia,Ting-Yan Shi,Wen Gao,Sheng Yin,Yan 대한부인종양학회 2020 Journal of Gynecologic Oncology Vol.31 No.5

Background: Two randomized phase III trials (EORTC55971 and CHORUS) showed similarprogression-free and overall survival in primary or interval debulking surgery in ovariancancer, however both studies had limitations with lower rate of complete resection and lack ofsurgical qualifications for participating centers. There is no consensus on whether neoadjuvantchemotherapy followed by interval debulking surgery (NACT-IDS) could be a preferred approachin the management of advanced epithelial ovarian cancer (EOC) in the clinical practice. Methods: The Asian SUNNY study is an open-label, multicenter, randomized controlled,phase III trial to compare the effect of primary debulking surgery (PDS) to NACT-IDS instages IIIC and IV EOC, fallopian tube cancer (FTC) or primary peritoneal carcinoma (PPC). The hypothesis is that PDS enhances the survivorship when compared with NACT-IDS inadvanced ovarian cancer. The primary objective is to clarify the role of PDS and NACT-IDS inthe treatment of advanced ovarian cancer. Surgical quality assures include at least 50% of nogross residual (NGR) in PDS group in all centers and participating centers should be nationalcancer centers or designed ovarian cancer section or those with the experience participatingsurgical trials of ovarian cancer. Any participating center should be monitored evaluatingthe proportions of NGR by a training set. The aim of the surgery in both arms is maximalcytoreduction. Tumor burden of the disease is evaluated by diagnostic laparoscopy orpositron emission tomography/computed tomography scan. Patients assigned to PDS groupwill undergo upfront maximal cytoreductive surgery within 3 weeks after biopsy, followed by6 cycles of standard adjuvant chemotherapy. Patients assigned to NACT group will undergo 3cycles of NACT-IDS, and subsequently 3 cycles of adjuvant chemotherapy. The maximal timeinterval between IDS and the initiation of adjuvant chemotherapy is 8 weeks. Major inclusioncriteria are pathologic confirmed stage IIIC and IV EOC, FTC or PPC; ECOG performancestatus of 0 to 2; ASA score of 1 to 2. Major exclusion criteria are non-epithelial tumors as wellas borderline tumors; low-grade carcinoma; mucinous ovarian cancer. The sample size is 456subjects. Primary endpoint is overall survival. Trial Registration: ClinicalTrials.gov Identifier: NCT02859038