Development of self-rectifying ZnO thin film resistive switching memory device using successive ionic layer adsorption and reaction method

Dongle, Vrushali S.,Dongare, Akshata A.,Mullani, Navaj B.,Pawar, Pravin S.,Patil, Prashant B.,Heo, Jaeyeong,Park, Tae Joo,Dongale, Tukaram D. Springer-Verlag 2018 Journal of materials science Materials in electron Vol.29 No.21

Anaerobic membrane bioreactors for antibiotic wastewater treatment: Performance and membrane fouling issues

Cheng, Dongle,Ngo, Huu Hao,Guo, Wenshan,Liu, Yiwen,Chang, Soon Woong,Nguyen, Dinh Duc,Nghiem, Long Duc,Zhou, Junliang,Ni, Bingjie Elsevier 2018 Bioresource technology Vol.267 No.-

<P><B>Abstract</B></P> <P>Antibiotic wastewater has become a major concern due to the toxicity and recalcitrance of antibiotics. Anaerobic membrane bioreactors (AnMBRs) are considered alternative technology for treating antibiotic wastewater because of their advantages over the conventional anaerobic processes and aerobic MBRs. However, membrane fouling remains the most challenging issue in the AnMBRs’ operation and this limits their application. This review critically discusses: (i) antibiotics removal and antibiotic resistance genes (ARGs) in different types of AnMBRs and the impact of antibiotics on membrane fouling and (ii) the integrated AnMBRs systems for fouling control and removal of antibiotics. The presence of antibiotics in AnMBRs could aggravate membrane fouling by influencing fouling-related factors (i.e., sludge particle size, extracellular polymeric substances (EPS), soluble microbial products (SMP), and fouling-related microbial communities). Conclusively, integrated AnMBR systems can be a practical technology for antibiotic wastewater treatment.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Removal of antibiotics and their effects on membrane fouling in AnMBRs are reviewed. </LI> <LI> AnMBRs are efficient for treating antibiotic wastewater mainly by biodegradation. </LI> <LI> The presence of antibiotics in AnMBRs will aggravate membrane fouling. </LI> <LI> Integrating AnMBRs with biofilm carriers and BES is efficient in fouling control. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Influence of Sea Surface Fluctuation on Internal Waves’ Vertical Structures in a Two-Layer Model

Dongling Zhang,Yufei Zhang,Xu Lu,Ming Zhang 한국해양과학기술원 2022 Ocean science journal Vol.57 No.2

Using a two-layer linear ocean wave model that is quasi-incompressible and two-dimensional, we studied the relationships between surface fluctuation and ocean internal waves (IWs). The main conclusions were as follows. In a two-layer ocean, the analytical solution of IW was obtained by solving a homogeneous ordinary differential equation with constant coefficients according to the frequency, wave number (wavelength), and vertical velocity amplitude of the ocean surface fluctuation. The vertical structure and characteristics of IW in the ocean were analyzed under the conditions of different stratification parameters and background currents. Once the surface fluctuations were determined, the features of IW showed different shapes, which indicated the indeterminacy of the solution. Such indeterminacy reflects the characteristics of the inverse problem. To obtain a definite solution, the constraint conditions of the inverse problem should be provided—that is, the environmental parameters of the two layers, such as the background flow, stratification parameters, thickness of the two layers, and geostrophic parameters. If the environmental parameters are fixed, four situations of solutions can be determined. The first three solutions have IWs, and the fourth solution only has an external wave. For certain environmental parameters, the wave number and natural frequency (characteristic frequency) of the first three situations of IWs were determined in this study. We showed that a resonance phenomenon will occur and cause very severe ocean internal waves when the wave number and frequency of the surface fluctuation are analogous or equivalent to the natural wave number and natural frequency.

Relationship between Ambidexterity Learning and Innovation Performance: The Moderating Effect of Redundant Resources

Dongling Wang,Kelvin C.K. Lam 한국유통과학회 2019 The Journal of Asian Finance, Economics and Busine Vol.6 No.1

Researchers have confirmed the relationship between ambidexterity learning and innovation performance, but according to the resourcebased theory, the relationship between ambidexterity learning and innovation performance is also affected by the internal resources of the organization. Internal resources are an important factor affecting the transformation of learning outcomes into performance. In addition, few scholars have pointed out whether different types of learning have different effects on different types of innovation performance. This study collects data from 170 High-tech enterprises in Shandong, china, and discusses the effects of exploitative learning and explorative learning on management innovation performance and technological innovation performance .This study further examines the moderating role of slack resource on the relationship between ambidexterity learning and innovation performance. Results show that ambidexterity learning has positive effect on innovation performance. Compared with exploitative learning, explorative learning has a greater impact on management innovation performance; compared with explorative learning, exploitative learning has a greater impact on technological innovation performances. Slack resource has positive moderating role between the relationship of exploitative learning, explorative learning and technology innovation performance. But Slack resource has no moderating role between the relationship of exploitative learning, explorative learning and management innovation performance.

Nucleation-type Magnetization Reversal Process in Microfabricated FePt (001) Dots

Dongling Wang,Takeshi Seki,Koki Takanashi 한국자기학회 2007 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Molecular dynamics simulation of nanoindentation influence of indenter velocity on 3C-SiC ceramics

Yu Dongling,Liu Dongliang,Yi Jiaqi,Zhou Jianzhen,Wu Nanxing 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.2

To investigate the effect of nanoindentation velocity on dislocation nucleation, development and elastic deformation of 3C-SiCceramic specimens, the nanoindentation loading process of 3C-SiC ceramic specimens under a diamond indenter is simulated. The molecular dynamics models of diamond indenter and 3C-SiC amorphous layer are constructed, and the nanoindentationconditions such as potential function, relaxation synthesis and time step are optimized. The dislocation analysis method andthe identify diamond structure method are used to analyze the internal structure change of the specimen and the dislocationgeneration, change and transfer of different positions after nanoindentation simulation. It is found that with the increase ofindenter velocity, the elastic threshold decreases and the plasticity increases, and tends to be stable at a certain stage. The loadfluctuation tends to be flat, the total amount of dislocation generated continues to decrease, and the diffusion rate of dislocationslows down. The length of 1/2<110> and 1/6<112> type dislocation becomes shorter, indentation formation of the 'lotus' shapemore regularly. The elastic-plastic threshold of 3C-SiC ceramic material also changes with the change of indenter velocity, andthe dislocation formation rate and total amount also affect while show a certain regularity.

Improving Efficiency of Timeslot Assignment for Non-realtime Data in a DVB-RCS Return Link: Modeling and Algorithm

Ki-DongLee,조용훈,이호진,오덕길 한국전자통신연구원 2003 ETRI Journal Vol.25 No.4

This paper presents a dynamic resource allocation algorithm with multi-frequency time-division multiple access for the return link of interactive satellite multimedia networks such as digital video broadcasting return channel via satellite systems. The proposed timeslot assignment algorithm, called the very efficient dynamic timeslot assignment (VEDTA) algorithm, gives an optimal assignment plan within a very short period. The optimality and computational efficiency of this algorithm demonstrate that it will be useful in field applications.

Effects of Carbonization Temperature on Nature of Nanostructured Electrode Materials Derived from Fe-MOF for Supercapacitors

Yanwei Sui,Dongling Zhang,Yongpeng Han,Zhi Sun,Jiqiu Qi,Fuxiang Wei,Yezeng He,Qingkun Meng 대한금속·재료학회 2018 ELECTRONIC MATERIALS LETTERS Vol.14 No.5

This work successfully demonstrates various temperature carbonization of iron based metal organic framework to deriveelectrode materials for supercapacitors. Furthermore, impacts of calcined temperatures on the nature of as-prepared productsare reported, and samples obtained at 300, 400, 500, 600 and 700 °C were investigated respectively. The products revealsexcellent electrochemical performance. Carbonized at 600 °C, the composite materials display the highest specific capacitanceof 972 F/g at a current density of 1 A/g. Carbonized at 500 °C, the capacitance retention of materials reach up to 93%. The high specific capacitance and excellent cyclic stability of the developed materials would exhibit nice prospect for thepractical utilization of electrode materials.

A Study on the criteria for judging the responsibilities of the parties involved in Back to Back L/C fraud trade transactions

Yongki Lee,Donglee Kim 한국무역금융보험학회(구 한국무역보험학회) 2021 무역보험연구 Vol.22 No.5

본 논문은 대법원 판례를 분석하여 대법원의 법리적 해석과 문제점을 매입은행에 관한 법리적 해석, Fraud Rule에 의한 법리적 해석, 선적서류 위조의 당사자에 관한 법리적 해석으로 제시하 였고 마스터와 백투백 신용장의 거래사실을 근거로 무역사기의 흔적을 분석하여 마스터와 백 투백 신용장 거래방식이 무역사기에 활용되고 있는 결제방식의 한계를 밝히었다. 마스터 신용 장의 거래당사자가 무역사기에 개입하였는지를 판단하는 기준을 제시하였다. 마스터 신용장의 개설의뢰인이 무역사기의 당사자인지는 마스터 신용장 개설의뢰인의 무역사 기 기획, 마스터와 백투백 신용장의 금융비용, 통관용 선하증권의 발행요청자로 판단하도록 하였다. 마스터 신용장의 수익자가 무역사기에 개입하였는지는 마스터 신용장의 선적서류와 환어음의 발행자, 마스터 신용장 선적서류와 환어음의 매입 요청일자, 스위치 선하증권의 발 행 요청자, 통관용 선하증권의 발행인지 여부로 판단하도록 하였다. 마스터 신용장 매입은행 이 무역사기를 인지하였는지는 매입은행의 마스터 신용장 선적서류와 환어음의 매입요청 일 자, 원 선하증권과 스위치 선하증권 발행자의 확인 여부, 매입대금 지급 근거, 통관용 선하증권 의 발행인지 여부로 판단하도록 하였다. 대법원 판례분석을 통하여 마스터 신용장의 개설은행 과 매입은행, 해상운송인에게 주는 시사점을 도출하였다. Purpose : To investigate the legal problems regarding the relationship between parties in Back to Back L/C fraud trade transactions, to present the criteria for judging trade fraud based on the relationship between the Master L/C and Back to Back L/C, and to prevent Back to Back L/C trade fraud by deducting the implications for the issuing bank and shipping carrier of the Master L/C. Research design, data, methodology : Literature review and analyzed Supreme Court Decision 2017Da21776 decided on November. 14, 2017 Results : First, the Supreme Court's legal interpretations of the negotiating bank, Fraud Rule, and the forgery of shipping documents were introduced as problems. Second, the limitations of the payment methods used in trade fraud between the Master L/C and Back to Back L/C were investigated. Third, the criteria for judging whether the parties of the Master L/C were involved was presented. Finally, through the analysis of the Supreme Court, the implications for the issuing bank, negotiating bank, and shipping carrier of the Master L/C were deducted. Conclusions : The Master L/C and Back to Back L/C payment method has loopholes where the issuing bank and the negotiating bank of Master L/C can be subjected to trade fraud. Given that the L/C trade fraud starts and ends with a bill of lading, the shipper who issues this bill of lading must be held accountable.

Obesity parameters in relation to lung function levels in a large Chinese rural adult population

Zeng Xiang,Liu Dongling,An Zhen,Li Huijun,Song Jie,Wu Weidong 한국역학회 2021 Epidemiology and Health Vol.43 No.-

OBJECTIVES: The association between obesity parameters and lung function indicators in the general Chinese rural adult population remains unclear. METHODS: In total, 8,284 Chinese adults aged 20 years to 80 years old from Xinxiang were recruited. Obesity-related parameters, including body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), waistto-height ratio (WHtR), body fat percentage (BFP), basal metabolism, and visceral fat index, and lung function parameters such as forced vital capacity and forced expiratory volume in first second were measured. RESULTS: The total prevalence of obesity defined by BMI, WC, WHR, WHtR, and BFP was 23.2%, 58.2%, 66.7%, 69.2%, and 56.5%, respectively. Spearman correlation analyses showed significant correlations between all obesity-related parameters and lung function. Linear regression analyses further demonstrated that BMI, WHtR, BFP, and general obesity defined using those indicators were negatively associated with lung function, while WC, WHR, and central obesity defined accordingly were positively associated with lung function. The relationship between general obesity and lung function was more evident in women than in men, while the link between central obesity and lung function was more obvious in men than in women. CONCLUSIONS: Obesity is closely related to lung function in the general Chinese adult population. Weight control and loss are important strategies to improve lung function and respiratory health.