bluuebunny/crossref_metadata_2025 huggingface dataset:
Polymer modified magnetic-luminescent nanocomposites for combined optical imaging and magnetic fluid hyperthermia in cancer therapy: analysis of Mn2+ doping for enhanced heating effect, hemocompatibility and biocompatibility
Authors: Ningombam Goutam Singh , Srinivasan Baskar , Chidananda Amrutha H. , Kalkura Subbaraya Narayana , Sharma Yogendra , Singh Nongmaithem Rajmuhon
Published: May 2022

Biocompatible polymer modified magnetic-luminescent nanocomposites with efficient heat generation for cancer hyperthermia applications.
A novel all-nitrogen molecular crystal N16 as a promising high-energy-density material
Authors: Zhao Lei , Liu Shijie , Chen Yuanzheng , Yi Wencai , Khodagholian Darlar , Gu Fenglong , Kelson Eric , Zheng Yonghao , Liu Bingbing , Miao Mao-sheng
Published: May 2022

A new all-nitrogen molecular crystal N16 with aromatic units, high molecular symmetry, and efficient crystal packing is predicted as a promising high-energy-density material that can be obtained under high pressure.
To chelate thallium(i) – synthesis and evaluation of Kryptofix-based chelators for 201Tl
Authors: Frei Angelo , Rigby Alex , Yue Thomas T. C. , Firth George , Ma Michelle T. , Long Nicholas J.
Published: May 2022

The synthesis and characterisation of a series of Kryptofix 222-based chelators that can be radiolabelled with 201Tl(i) in high radiochemical yields at ambient temperature are described.
Toward practical lithium-ion battery recycling: adding value, tackling circularity and recycling-oriented design
Authors: Mao Jianfeng , Ye Chao , Zhang Shilin , Xie Fangxi , Zeng Rong , Davey Kenneth , Guo Zaiping , Qiao Shizhang
Published: May 2022

Recent progress in battery recycling is critically reviewed, including closed-loop design of new batteries and recycling-oriented design of battery configurations and components, together with an appraisal of predicted future research.
Two decades of changing anthropogenic mercury emissions in Australia: inventory development, trends, and atmospheric implications
Authors: MacFarlane Stephen , Fisher Jenny A. , Horowitz Hannah M. , Shah Viral
Published: May 2022

Australian anthropogenic emissions of mercury have decreased by a factor of two since 2000, with implications for atmospheric mercury concentrations and deposition to the Australian continent.
Rice exposure to silver nanoparticles in a life cycle study: effect of dose responses on grain metabolomic profile, yield, and soil bacteria
Authors: Yan Xin , Pan Zhengyan , Chen Si , Shi Nibin , Bai Tonghao , Dong Liqiang , Zhou Dongmei , White Jason C. , Zhao Lijuan
Published: May 2022

Under an appropriate exposure dose, AgNPs provide positive impacts on rice tillering, yield, grain metabolite profile, and soil bacteria.
Cyclo(-Phe-Phe) alleviates chick embryo liver injuryviaactivating the Nrf2 pathway
Authors: Zhang Qiong-Yi , Han Shao-Cong , Huang Rong-Ping , Jiang Man-Ya , Yan Chang-Yu , Li Xi-You , Zhan Yu-Jiao , Li Xiao-Min , Li Yi-Fang , Kurihara Hiroshi , Tan Rui-Rong , Li Wei-Xi , He Rong-Rong
Published: May 2022

Cyclo (Phe-Phe) ameliorated hepatic injury and dysplasia induced by oxidative stress, and the mechanism is mainlyviapromoting Nrf2 translocation as well as activating the Nrf2 pathway through binding Keap1.
A polysaccharide from Sargassum pallidum reduces obesity in high-fat diet-induced obese mice by modulating glycolipid metabolism
Authors: Yuan Dan , Huang Qiang , Li Chao , Fu Xiong
Published: May 2022

Sargassum pallidum polysaccharide (SPP) has potential to be used as a promising dietary supplement for ameliorating obesity.
Probiotics and gut microbiota: mechanistic insights into gut immune homeostasis through TLR pathway regulation
Authors: Kaur Harpreet , Ali Syed Azmal
Published: May 2022

Consumption of probiotics as a useful functional food improves the host's wellbeing, and, when paired with prebiotics (indigestible dietary fibre/carbohydrate), often benefits the host through anaerobic fermentation.
A numerical simulation and high-speed photographic study of the audio-frequency noise in an analytical ICP source
Authors: Xie Yundong , Su Yongyang , Li Zhiming , Zhai Lihua , Lan Xiaofei , Wang Wei , Xu Jiang
Published: May 2022

Numerical simulation and theoretical prediction show that the observed exponential decrease of the a.f. noise frequency with sampling depth in an ICP source result from a coupling effect of vortex dissipation both at torch outlet and sampling gap.
Emulsion electrospinning of sodium alginate/poly(ε-caprolactone) core/shell nanofibers for biomedical applications
Authors: Norouzi Mohammad-Reza , Ghasemi-Mobarakeh Laleh , Itel Fabian , Schoeller Jean , Fashandi Hossein , Borzi Aurelio , Neels Antonia , Fortunato Giuseppino , Rossi René M.
Published: May 2022

Sodium alginate/poly(ε-caprolactone) core/shell nanofibers were fabricated via water-in-oil emulsion electrospinning. The sodium alginate concentration, water-to-oil ratio, and surfactant concentration were optimized for the maximum stability.
p-Toluenesulfonic acid-catalyzed regioselective C4–H iodination of isoquinolin-1(2H)-ones
Authors: Yang Cai-Yun , Hu Lin-Ping , Zhang De-Run , Li Xia , Teng Ming-Yu , Liu Bo , Huang Guo-Li
Published: May 2022

An efficient procedure for p-toluenesulfonic acid-catalyzed iodination of isoquinolin-1(2H)-ones with N-iodosuccinimide under mild reaction conditions is reported. This methodology features scalable synthesis, wide substrate scope, and high functional-group tolerance.
Graphene aerogel modified TiO2 photocatalysts with high performances by controllable agglomeration behaviour of TiO2 nanoparticles
Authors: Sun Yunfei , Sun Jiawei , Que Miaoling , Chen Lixiang , Chen Feng , Tang Bo
Published: May 2022

TiO2 nanoparticles from the GA assisted composites with a high uniform distribution degree display high photocatalytic performances.
The synergistic effect of PMS activation by LaCoO3/g-C3N4 for degradation of tetracycline hydrochloride: performance, mechanism and phytotoxicity evaluation
Authors: Yuan Xiaoying , Leng Yue , Fang Changlong , Gao Kangqi , Liu Chenyu , Song Jianjun , Guo Yingshu
Published: May 2022

A LaCoO3/g-C3N4 catalyst with high stability was designed and used for PMS activation to degrade TC.
Synergistic effect of S vacancies and P dopants in MoS2/Mo2C to promote electrocatalytic hydrogen evolution
Authors: Zhao Yaru , Xin Wang , Liu Bitao , Li Hongxing , Xu Yuqing , Zhang Zixuan
Published: May 2022

We synthesize hierarchical heterojunctions of P-MoS2/Mo2C, which exhibit high stability and excellent HER activity. This work will provide new insights into the design of high-efficiency HER catalysts for commercial hydrogen production.
One-pot method for preparation of capsaicin-containing double-network hydrogels for marine antifouling
Authors: Li Pei , Su Xin , Hao Dezhao , Yang Ming , Gui Taijiang , Cong Weiwei , Jiang Wenqiang , Ge Xiuli , Guo Xinglin
Published: May 2022

Double-network hydrogel coatings containing capsaicin analogs were prepared by a one-pot method based on a green strategy, by incorporating a derivative of capsaicin N-(4-hydroxy-3-methoxybenzyl) acrylamide into the polymer network. An antifouling effect can be achieved.
Three-dimensional carbon nanofiber-based anode for high generated current and power from air-cathode micro-sized MFC
Authors: Amen Mohamed Taha , Kim Hak Yong , Barakat Nasser A. M.
Published: May 2022

A super-effective novel 3D carbon nanofiber-based anode for micro-sized microbial fuel cells is reported. The power density generated from the proposed micro-sized MFC was 8100 mW m−2. The fabrication method is simple and applicable.
Mechanistic insights into the chemistry of compound I formation in heme peroxidases: quantum chemical investigations of cytochromecperoxidase
Authors: Aboelnga Mohamed M.
Published: May 2022

Discerning the feasibility of a no-water peroxidase mechanism in the doublet spin state irrespective of the environment surrounding the heme pocket.
Enhanced detection sensitivity through enzyme-induced precipitate accumulation in LSPR-active nano-valleys
Authors: Kwak Su-Heon , Wi Jung-Sub , Lee Jieon , Kim Chunjoong , Na Hee-Kyung
Published: May 2022

Multiple washing and drying cycles of the sample drive the accumulation of enzymatic reaction products in the plasmonic nano-valleys, consequently inducing an additional LSPR peak shift in a concentration-dependent manner.
High-throughput growth of HfO2 films using temperature-gradient laser chemical vapor deposition
Authors: Tu Rong , Liu Ziming , Wang Chongjie , Lu Pengjian , Guo Bingjian , Xu Qingfang , Li Bao-Wen , Zhang Song
Published: May 2022

In this study, HfO2 films were grown using a highly efficient HT-LCVD process with a large gradient (100 K mm−1) temperature field, achieving four novel microstructures which appeared simultaneously on a high-throughput sample.
A designed miniature sensor for the trace level detection and degradation studies of the toxic dye Rhodamine B
Authors: Hayat Mazhar , Shah Afzal , Hakeem Muhammad Kamran , Irfan Muhammad , Haleem Abdul , Khan Sher Bahadar , Shah Iltaf
Published: May 2022

The presence of organic pollutants in water and food samples is a risk for the environment.
Characterization of the volatile organic compounds produced from green coffee in different years by gas chromatography ion mobility spectrometry
Authors: Min Chen , Biyi Mai , Jianneng Lu , Yimin Li , Yijun Liu , Long Cheng
Published: May 2022

The effect of storage time on green coffee VOCs was studied by their separation via HS-SPME and identification via GC-MS.
Non-isothermal crosslinking of ethylene vinyl acetate initiated by crosslinking agents: kinetic modelling
Authors: Zeng Fanwei , Guo Xing , Sun Li , He Xuelian , Zeng Zuoxiang , Liu Zhen
Published: May 2022

The kinetic parameter Ea of EVA crosslinking reaction initiated by a peroxide crosslinking agent showed irregular changes in the early stage of crosslinking, and increase with the increase of conversion rate α in the later stage of crosslinking.
Effect of liquid volume fraction and shear rate on rheological properties and microstructure formation in ternary particle/oil/water dispersion systems under shear flow: two-dimensional direct numerical simulation
Authors: Ishigami Toru , Karasudani Taisei , Onitake Shu , Shirzadi Mohammadreza , Fukasawa Tomonori , Fukui Kunihiro , Mino Yasushi
Published: May 2022

We numerically studied the rheological properties and microstructure formation under shear flow in a ternary particle/oil/water dispersion system.
Bilayer-favored intercalation induced efficient and selective liquid phase production of bilayer graphene
Authors: Wang Huiyong , Wan Qiang , Lu Zhansheng , Wang Yanlei , Jiang Gaopeng , Shen Jie , Zeng Qiaochu , Zhang Suojiang , Chen Zhongwei , Wang Jianji
Published: May 2022

A novel strategy for the scalable liquid phase exfoliation of graphite into bilayer graphene under ambient conditions was developed. The selectivity and yield for bilayer graphene reached record-breaking values of 86.5% and 52.3%, respectively.
A multifunctional hole-transporter for high-performance TADF OLEDs and clarification of factors governing the transport property by multiscale simulation
Authors: Nagamura Natsuo , Sasabe Hisahiro , Sato Hiroki , Kamata Takahiro , Ito Nozomi , Araki Suguru , Abe Shoki , Sukegawa Yoshihito , Yokoyama Daisuke , Kaji Hironori , Kido Junji
Published: May 2022

A record-breaking efficient (EQE: 22%) and long-living (LT50: 28 000 h@1000 nit) TADF OLED is realized by using a multifunctional hole-transporter. The factors governing the transport properties are quantitatively analyzed by multiscale simulation.
A biocompatible, self-adhesive, and stretchable photonic crystal sensor for underwater motion detection
Authors: Li Qi , Liu Songtao , Wang Jialun , Mondele Mbola Nyv , Meng Zihui , Wang Xingyu , Xue Min
Published: May 2022

A biocompatible and self-adhesive photonic crystal sensor is adhered directly on the human skin for real-time underwater movement monitoring with the naked eye.
A high-efficiency actuator with great photoinduced force based on a bioinspired gradient design
Authors: Liu Mingxia , Xu Zhao , Lv Yimei , Zhu Shu , Liu Weiping , Yang Lili , Ge Dengteng
Published: May 2022

Inspired by natural gradient functional materials, a gradient design of a photothermal component is developed to achieve a high-accuracy actuator with great photoinduced force.
Adiponectin Reduces Lipid Content in Chicken Myoblasts by Activating AMPK Signaling Pathway
Authors: Hu Qingmei , Wang Dan , Lin Hai , Li Haifang , Zhao Jingpeng , Jiao Hong Chao , Wang Xiaojuan
Published: May 2022

Studies in mammals have shown that adiponectin is secreted mainly by adipocytes, and it plays a crucial role in glucose and lipid metabolism in muscles. Clarifying the crosstalk role of adiponectin between adipose tissue and skeletal muscle tissue is very important for internal homeostasis. The glucose and lipid metabolism of chicken is different from that of mammals, and the role of adiponectin in chickens is unclear. Therefore, it is of great significance to study the effect and mechanism of adiponectin on lipid metabolism in chickens. In this study, the regulating effect of adiponectin on lipid metabolism in chicken myoblasts was explored by adding a certain concentration of exogenous recombinant adiponectin. Results showed that adiponectin reduced intracellular lipid content, increasing the mRNA expression of adiponectin receptor and cellular uptake of glucose and fatty acids. In addition, adiponectin activated the 5′ adenosine monophosphate activated protein kinase (AMPK) signaling pathway. The above results suggested that adiponectin reduced intracellular lipid content, mainly by binding to adiponectin receptor, activating AMPK pathway, increasing cellular uptake of glucose and fatty acids, and promoting lipid oxidation.
Circadian rhythm of lipid metabolism
Authors: Sinturel Flore , Spaleniak Weronika , Dibner Charna
Published: May 2022

Lipids comprise a diverse group of metabolites that are indispensable as energy storage molecules, cellular membrane components and mediators of inter- and intra-cellular signaling processes. Lipid homeostasis plays a crucial role in maintaining metabolic health in mammals including human beings. A growing body of evidence suggests that the circadian clock system ensures temporal orchestration of lipid homeostasis, and that perturbation of such diurnal regulation leads to the development of metabolic disorders comprising obesity and type 2 diabetes. In view of the emerging role of circadian regulation in maintaining lipid homeostasis, in this review, we summarize the current knowledge on lipid metabolic pathways controlled by the mammalian circadian system. Furthermore, we review the emerging connection between the development of human metabolic diseases and changes in lipid metabolites that belong to major classes of lipids. Finally, we highlight the mechanisms underlying circadian organization of lipid metabolic rhythms upon the physiological situation, and the consequences of circadian clock dysfunction for dysregulation of lipid metabolism.
An analytical model of an eddy‐current coil near the edge of a conductive plate
Authors: Yang Xinyi , Luo Yao , Kyrgiazoglou Athanasios , Tytko Grzegorz , Theodoulidis Theodoros
Published: May 2022

Truncated region eigenfunction expansion (TREE) method is applied to the analysis of impedance change of a coil in the vicinity of the edge of a metal plate. The analysis is carried out with the second order vector potentials (SOVPs) and provided for both cylindrical and rectangular coils. By full discretisation of the eigenvalues, double series solutions are obtained for the field and coil impedance variations. To simplify the solving procedure further, a novel approach for the determination of eigenvalues is proposed by means of the 1D finite element method (FEM), which is easy to implement and works well for the plate of non‐magnetic material. Numerical results for the impedance variations of cylindrical and rectangular coils are compared with those of 3D FEM simulation, by which the efficiency and accuracy of the authors’ method are confirmed, and the former is much faster and more memory efficient.
XMM-Newton study of six massive, X-ray luminous galaxy cluster systems in the redshift range z = 0.25–0.5
Authors: Böhringer H. , Chon G. , Ellis R. S. , Barrena R. , Laporte N.
Published: May 2022

Massive galaxy clusters are interesting astrophysical and cosmological objects to study, but they are relatively rare. In the redshift range z = 0.25–0.5 which is, for example, a favourable region for gravitational lensing studies, about 100 such systems are known. Most of them have been studied in X-rays. In this paper we study the six remaining massive clusters in this redshift interval in the highly complete CLASSIX (Cosmic Large-Scale Structure in X-rays) survey which have so far not been observed with sufficiently deep exposures in X-rays. With data from our new XMM-Newton observations we characterise their structures, derive X-ray properties such as the X-ray luminosity and intracluster medium temperature, and estimate their gas and total masses. We find that one cluster, RXCJ1230.7+3439, is dynamically young with three distinct substructures in the cluster outskirts and RXCJ1310.9+2157/RXCJ1310.4+2151 is a double cluster system. Mass determination is difficult in the systems with substructure. We therefore discuss several methods of mass estimation including scaling relations. In summary, we find that five of the six targets of study are indeed massive clusters as expected, while the last cluster RXCJ2116.2−0309 is a close projection of a distant and a nearby cluster which has led to a previous overestimation of its mass. In the XMM-Newton observation fields, we also find three low redshift clusters close to the targets which are also analysed and described here. In the field of RXCJ2116.2−0309, we discover serendipitously a highly variable X-ray source which has decreased its flux within a year by more than a factor of eight. This source is most probably an active galactic nucleus (AGN).
Wide Green Dike (WGD) concept for grass revetment under coastal conditions
Authors: Kampen Maurits , Maris Henrike , Peters Martijn , Steenbergen-Kajabová Jana , van Zuylen Jos , Jolink Erik , van Norel Henk
Published: May 2022

The Dike along the Dollard estuary in the northeast of the Netherlands has a grass cover. This revetment is not sufficiently strong for the local hydraulic conditions. Traditional dike strengthening leads to the replacement of grass with a hard revetment. An alternative under investigation is the “Wide Green Dike” (WGD) concept: a grass-covered dike with a gentle slope of around 1:7, naturally merging into the salt marsh located in front. The WGD concept is easily adaptable to future challenges, such as sea level rise. Furthermore, sediment of the estuary is currently being ripened to clay near the dike, potentially saving numerous truck movements needed for strengthening. The WGD is therefore the example of a circular, innovative and sustainable concept. However, the WGD needs to comply with the national flood safety standards to make it a feasible alternative, while the current assessment methods and instruments are not yet suited for this particular type of dike. During normative conditions, the grass cover is allowed to fail and the underlaying clay experiences erosion. A clay erosion model is used to design the thickness of the clay layer and proof that the WGD has sufficient residual strength to meet the norms of flood risk.
Utilizing inactive storage in a dam reservoir during extreme drought periods
Authors: Joo Hongjun , Kim Donghyun , Kwak Jaewon , Wang Wonjoon , You Younghoon , Kim Hung Soo
Published: May 2022

The purpose of this study is to suggest a structural plan for improving the utilization of inactive storage in dam reservoirs, to mitigate extreme drought. Inactive storage in the dam is composed of emergency storage and dead storage. The emergency storage can be used in emergencies such as drought. But, in general, the dead storage for sedimentation is not used, even in an emergency. Therefore, we developed a methodology to determine how the dead storage space can be partially used during extreme drought periods when the sedimentation has not occurred yet. We call this partial space in a dam reservoir “drought storage”. An accurate analysis of sediment levels needs to be performed before calculating drought storage, and so the present sediment level in the dam reservoir was estimated using SED-2D linked with the RMA-2 model of SMS. After considering the additional available storage capacity based on the estimated sediment level, drought storage was finally determined. We also predicted future sediment levels after 100 years and suggest the amount of drought storage available in the future. As a result, we found that the available drought storage will be lower in the future compared to present drought storage, due to the gradual increase in reservoir sedimentation over time in the dam. Further research may be needed to effectively reduce sedimentation in order to increase the drought storage capacity.
The Development of Jamrani Multipurpose Project in India from a multilateral development bank perspective
Authors: Cauchois Arnaud , L’Hostis Marie , Mohan Mukesh
Published: May 2022

The State of Uttarakhand in India has been studying the Jamrani Multipurpose Project in the last 40 years. The government’s feasibility study has been completed and all statutory clearances were obtained. It comprises the construction of a 150-meter-high roller compacted concrete dam across the Gola River, a 14-megawatt toe powerhouse, the expansion and modernization of irrigation canal systems and a drinking water component. The project benefits will include 117 million liters per day drinking water for Haldwani Town, increased water availability for 150,000 ha cultivable command area and annual energy generation of 63 gigawatt-hour as a byproduct. The project is estimated to cost $365 million and was proposed in 2019 for the Asian Development Bank’s financial assistance. A memorandum of understanding was signed in 2018 between the states of Uttarakhand and Uttar Pradesh, defining how the cost and benefits will be shared. The paper will discuss the ADB project appraisal process and describe the steps being taken to confirm and enhance the project economic feasibility, improve the mitigation of environmental and social impacts and review and confirm the technical studies.
Proposed Malewa dam in Kenya: Adequate adaptations to original design
Authors: Guerpillon Hervé , Le Peillet Arnaud , Frézet Jean-François
Published: May 2022

Malewa dam in Kenya was first studied in the 1990s at preliminary design stage, through a study funded by Japanese Government who entrusted JICA with it. At that time, its main purpose was water supply to Nakuru, Naivasha and Gilgil cities in the Rift Valley. Thirty years later, its design was reviewed within the frame of a feasibility study funded by World Bank to account for revised needs -now excluding Nakuru- also taking into account increased awareness of environmental impact on downstream Lake Naivasha (Ramsar zone), management of the water scarcity, climate change trends, reliability issue, quality of water, sedimentation, as well as growing concern with operation and maintenance costs. Among studied solutions, focused on supply by gravity for economic reasons, and as ground water poses a serious health problem in this area due to a high fluoride content detrimental to human consumption, the construction of Malewa dam was confirmed to be the best solution after a decision making process, subject to some changes to the basic design, such as using the compensation flow to generate hydro-power to pump water to a WTP nearby the dam, mixing water with groundwater, building check dams and implementing water management and compensation measures.
Long-term modelling of the Arkun multipurpose reservoir
Authors: Haselsteiner Ronald , Pamuk Resul , Tuncer Kemal
Published: May 2022

The Arkun hydropower and dam project is located on the Coruh River in the North-west of Turkey. The project was completed in 2014. The reservoir is mainly used for energy generation. For this purpose, a main powerhouse with 225 MW and an environmental powerhouse with 12 MW were constructed. Additionally, the reservoir and operation scheme shall contribute to mitigate floods. A minimum ecological flow is mandatory in the Coruh River between the river section reaching from the eco powerhouse which is located downstream of the CFSGD dam and the main powerhouse which is connected to the reservoir via a 14 km headrace tunnel. During the feasibility stage the hydropower projects in Turkey frequently applied simplified methods for the estimation of the energy generation potential. This approach led to an overestimation of the energy general in many cases. Therefore, a reservoir operation model was created which considered monthly runoff data from 1963 to 2005. This model considered the operation of the two powerhouses, evaporation, potential irrigation uses, and spilling. In order to provide a reliable annual generation prognosis, the future development status was considered by the adaptation of the run-off time series. The results of this modelling confirm both the estimated power production during feasibility stage and the actual power production during the operation period.
The changing role of the China Three Gorges Corporation in the Yangtze River: exploration from hydropower development to comprehensive watershed management
Authors: Wang Dianchang , Li Chong , Zhou Ruimeng
Published: May 2022

As China’s largest clean energy group and the world’s largest hydropower development company, China Three Gorges Corporation (CTG) accounts for 3/4 of hydropower installed capacity, where most of which are distributed in the Yangtze River Basin. Since 2017, CTG has formally entered the field of water pollution control, taking the “water” as the core and the sewage treatment of cities/towns along the river as an entry point. From a technical point of view, with the advantages of hydropower dispatching and operation, the integration of water resources protection, water pollution control, as well as water ecological restoration will be gradually completed to achieve the “one water” control goal. From a management point of view, through the means of government-enterprise cooperation model, the establishment of a jointly sharing mechanism by relevant stakeholders, as well as the market-oriented commercial operation, the implementation and supervision of the watershed administration will be strengthened. CTG has started a new exploration of enterprises participating in the comprehensive governance of watershed management, which will provide ecological priority and sustainable development experience for the watershed management of the world.
Dynamic coordination and control technology of the operating water level during flood season and its application in Xiluodu-Xiangjiaba - Three Gorges cascade reservoirs
Authors: Zhang Song , Hu Ting , Zhou Man , Hu Xing’e
Published: May 2022

To satisfy the increasing multi-objective scheduling requirements in flood season of the Xiluodu-Xiangjiaba - Three Gorges multi-function cascade reservoir system located in the lower reaches of Jinsha River and the upper reaches of Yangze River, and simultaneously solve the key technical problems of the resource utilization of floods by joint optimal scheduling of cascade reservoirs. This paper explorers and presents a scientific solution of joint dynamic control of the reservoirs’ operating water level during flood season that suitable for the flood resources comprehensive utilization of the large-scale cascade reservoirs in the Yangtze River Basin. Specifically, the solution is composed of a dynamic control mode for the operating water level of the cascade reservoir during the main flood season (ie, forecast and pre-impounding, grade regulating, and staged discharge control), a phased release theory of the flood control capacity at the end of flood season and a risk analysis model for the decision of the cascade reservoir scheduling. These new technical solutions were successfully applied to the 2016-2019 scheduling practices of the Xiluodu- Xiangjiaba - Three Gorges cascade reservoir system, the world’s largest multi-function multi-reservoir system that operation and management by the China Three Gorges Corporation (CTG). The comprehensive benefits of the cascade reservoir in flood control, power generation, shipping, ecology, and the water supply during reservoir impounding and falling periods have been significantly improved, including greatly reducing downstream flood pressure, increasing power generation and water supply, improving navigation condition, promoting fish reproduction. Meanwhile, it also verifies that these new technologies are scientific, practical, universal and have a broad application prospect.
Challenges in flood control operation and dissemination of information - Lessons from the record-breaking heavy rain in July 2018, Japan
Authors: Sumi Tetsuya , Mitsunari Masakazu , Hamaguchi Tatsuo
Published: May 2022

In July 2018, a record-breaking heavy rain hit western part of Japan, leaving severe damages. 213 dams under the jurisdiction of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) were engaged in flood control operation, and greatly contributed to the reduction of flood damages. Meanwhile, in case of 8 dams, the amount of rainfall was so huge that the emergency spillway gate operation by discharging equal to inflow volume was obliged to execute which caused severe flood damages in some of the downstream areas. In December 2018, Special Panel set up by MLIT finalized a report urging enhancement of flood control capability of dams and dissemination of related information, in preparation for the risk of extreme rainfall which may increase under changing climate condition. This paper briefly introduces the report, outlining the flood control activities at the 2018 flood event as well as the contents of the proposal.
Simplifying the Complex: Pool Stage-Frequency Analysis of USACE’s Largest Reservoir
Authors: Melliger Joshua , Poluektov Ilya , Christensen Jennifer , Smith C. Haden
Published: May 2022

Lake Sakakawea in North Dakota, U.S.A., was formed following the closure of Garrison Dam in 1953 and is the largest U.S. Army Corps of Engineers (USACE) reservoir. It is the second of six mainstem reservoirs located in series on the Missouri River operated as a system by USACE. Critical for dam safety risk analysis, a pool stage-frequency curve, extending to water levels above the top of dam, was developed for an Issue Evaluation Study using a combination of tools, including Monte Carlo simulation with the recently released USACE reservoir frequency analysis software, RMCRFA. This paper describes the hydrologic tools leveraged to expedite the pool stage-frequency analysis and discusses the challenges overcome during the study. The methods used to reduce a complex reservoir system to a simplified single reservoir model are presented, and statistical challenges associated with mixed population rain/snow floods, paleofloods, and regulated basin data are discussed. The simplified approach was capable of incorporating a variety of hydrology inputs, while providing a reasonable approximation for the complex reservoir operations. The results were transparent and easily understood by decision makers tasked with making portfolio-wide investment decisions.
Weather modification, solution and innovation to reservoirs water sustainable management (case study: ZayandeRoud reservoir)
Authors: Poormohammadi Samaneh , Falahii Ali , Golkar Farid
Published: May 2022

Climate change has had devastating effects on water resources in many countries. Many volumes of Iran’s water resources have declined due to climate change. Meanwhile, the use of weather modification methods, especially cloud seeding, is a practical solution to adapt to the climate change impact. In Iran, consecutive droughts and climate change have reduced water resources of dams behind and in some cases, they have completely dried up. Nowadays, cloud seeding is used as the most costeffective method for water harvesting in the world… The results of the evaluation of cloud seeding projects in most parts of the country indicate an average runoff increase of between 10% and 15% during the seeding periods. Zayanderud Dam is one of the big dams in Iran in the Zagros Mountain range its water resources have been significantly reduced by overdraft and climate change. Cloud seeding operations have been performing for many years in the Charmahal and Bakhtiari catchment, which are located upstream of the ZayandeRoud reservoirs as new method to sustainable water resources management of dams. In this article, the results of runoff production by cloud seeding operation will be noted in the ZayandeRoud Dam for 10 years Non-consecutive (2006 – 2016).
A nonnegativity preserving scheme for the relaxed Cahn–Hilliard equation with single-well potential and degenerate mobility
Authors: Bubba Federica , Poulain Alexandre
Published: May 2022

We propose and analyze a finite element approximation of the relaxed Cahn–Hilliard equation [Perthame and Poulain, Eur. J. Appl. Math. 32 (2021) 89–112.] with singular single-well potential of Lennard-Jones type and degenerate mobility that is energy stable and nonnegativity preserving. The Cahn–Hilliard model has recently been applied to model evolution and growth for living tissues. Although the choices of degenerate mobility and singular potential are biologically relevant, they induce difficulties regarding the design of a numerical scheme. We propose a finite element scheme, and we show that it preserves the physical bounds of the solutions thanks to an upwind approach adapted to the finite element method. We propose two different time discretizations leading to a non-linear and a linear scheme. Moreover, we show the well-posedness and convergence of solutions of the non-linear numerical scheme. Finally, we validate our scheme by presenting numerical simulations in one and two dimensions.
Ergebnisse und Lebensqualität nach individueller computer-gestützter Rekonstruktion des Mittelgesichtes
Authors: Gellrich Nils-Claudius , Rahlf Björn , Jehn Philipp , Spalthoff Simon , Korn Philippe
Published: May 2022

Defekte im Bereich des Mittelgesichtes sind oftmals nicht nur von funktioneller Bedeutung, auch die ästhetische Komponente solcher angeborenen oder erworbenen Deformitäten beeinträchtigen maßgeblich die Lebensqualität der Patienten. So bedingen Rekonstruktionen des Mittelgesichtes nicht nur lediglich verlorengegangenes oder nicht angelegtes Gewebe zu ersetzen, sondern vielmehr vorhersagbare Ergebnisse sowohl hinsichtlich Ästhtetik als auch Funktion für den individuellen Patienten zu erzielen. Digitale Planungsmöglichkeiten unter Einbeziehung von unterschiedlichen Oberflächen- und Volumendaten in Kombination mit modernen additiven Fertigungstechniken zur Biomodell- und Implantat-Herstellung sowie intraoperativer Unterstützung durch Nutzung realer und virtueller 3D-Volumendaten bei Navigation und intraoperativer Bildgebung aber auch Ergebnissicherung durch postoperative Analyse haben heute in die moderne Mittelgesichtsrekonstruktion Einzug gehalten und setzen neue Standards für die medizinische Versorgung. Ziel dieses Referates ist es im Folgenden die modernen Möglichkeiten der patienten-spezifischen Mittelgesichtsrekonstruktion unter Einbeziehung computer-assistierer Planungs- und Fertigungstechniken darzustellen.
An Improved Scalable Process for the Synthesis of (S,S)-DACH-Ph Trost Ligand
Authors: Zhang Yongda , Chong Eugene , White Jada A. H. , Radomkit Suttipol , Xu Yibo , Kosnik Stephanie C. , Lorenz Jon C.
Published: May 2022

An improved chemical process has been developed for the synthesis of (S,S)-DACH-Ph Trost ligand. The amidation of 2-diphenylphosphinylbenzoic acid and (S,S)-diaminocyclohexane is promoted by stoichiometric CDI and catalytic imidazole hydrochloride. The resulting product, (S,S)-DACH-Ph Trost ligand, is isolated as a white solid in 80% yield with >99% ee by simple filtration without column chromatography. The current facile process is also demonstrated on kilogram scale.
Local well-posedness of strong solution to a climate dynamic model with phase transformation of water vapor
Authors: Ma Jieqiong , Lian Ruxu , Zeng Qingcun
Published: May 2022

The primitive three-dimensional viscous equations for atmospheric dynamics with the phase transformation of water vapor are studied. According to the actual physical process, we give the heating rate, mass of water, and precipitation rate, which are related to temperature and pressure. In fact, this system strictly obeys the conservation of energy and is used to make better climate predictions. Providing H2 initial data and boundary conditions with physical significance, we prove the local well-posedness of a unique strong solution to the moist atmospheric equations by the contractive mapping principle and the energy method in the H2 framework.
Stability analysis of floating wind turbine structure with turned mass damper-nonlinear energy sink
Authors: Mu Anle , Huang Zebo , Hu Juncan , Yang Bin , Wang Jiahui , Qian Ye
Published: May 2022

The conventional tuned mass damper (TMD) has the defect of a narrow tuning band in the stability control of a floating wind turbine (FWT). In this paper, a hybrid vibration reduction method of tuned mass damper-nonlinear energy sink (TMD-NES) is proposed, which makes full use of the broadband advantage of NES and can effectively avoid its initial energy sensitivity disadvantage. A FWT dynamics model with TMD-NES was established, the complex variable average method was used to solve the dynamic response of the system, and the Runge–Kutta method is used to prove the reliability of the analytical method. The bifurcation characteristics of NES and the vibration suppression effect of TMD-NES are analyzed and discussed. The results show that the proposed method reduces the peak energy of the tower surge response by 95.3%, broadens the frequency band of vibration reduction, reduces the sensitivity to the initial energy, and improves the robustness of the system.
Dynamics of chaotic system based on image encryption through fractal-fractional operator of non-local kernel
Authors: Khan Naveed , Ahmad Zubair , Ahmad Hijaz , Tchier Fairouz , Zhang Xiao-Zhong , Murtaza Saqib
Published: May 2022

In this paper, the newly developed fractal-fractional differential and integral operators are used to analyze the dynamics of chaotic system based on image encryption. The problem is modeled in terms of classical order nonlinear, coupled ordinary differential equations that are then generalized through fractal-fractional differential operator of Mittag-Leffler kernel. In addition to that, some theoretical analyses, such as model equilibria, existence, and uniqueness of the solutions, have been proved. Furthermore, the highly non-linear problem is solved by adopting a numerical scheme through MATLAB software. The graphical solution is portrayed through 2D and 3D portraits. Some interesting results are concluded considering the variation of fractional-order parameter and fractal dimension parameter.
Split electrons in partition density functional theory
Authors: Zhang Kui , Wasserman Adam
Published: May 2022

Partition density functional theory is a density embedding method that partitions a molecule into fragments by minimizing the sum of fragment energies subject to a local density constraint and a global electron-number constraint. To perform this minimization, we study a two-stage procedure in which the sum of fragment energies is lowered when electrons flow from fragments of lower electronegativity to fragments of higher electronegativity. The global minimum is reached when all electronegativities are equal. The non-integer fragment populations are dealt with in two different ways: (1) An ensemble approach (ENS) that involves averaging over calculations with different numbers of electrons (always integers) and (2) a simpler approach that involves fractionally occupying orbitals (FOO). We compare and contrast these two approaches and examine their performance in some of the simplest systems where one can transparently apply both, including simple models of heteronuclear diatomic molecules and actual diatomic molecules with two and four electrons. We find that, although both ENS and FOO methods lead to the same total energy and density, the ENS fragment densities are less distorted than those of FOO when compared to their isolated counterparts, and they tend to retain integer numbers of electrons. We establish the conditions under which the ENS populations can become fractional and observe that, even in those cases, the total charge transferred is always lower in ENS than in FOO. Similarly, the FOO fragment dipole moments provide an upper bound to the ENS dipoles. We explain why and discuss the implications.
Remote in-line evaluation of acousto-elastic effects during elastic–plastic transition in an aluminum plate under uniaxial tensile and dynamic fatigue loading by laser generated, optically detected surface acoustic waves
Authors: Yuan Peilong , Sunetchiieva Sevilia , Liu Liwang , Liu Shiyuan , Seresini Tommaso , Yin Anmin , Xu Xiaodong , Glorieux Christ
Published: May 2022

Early detection and monitoring of heavy load induced plastic deformation in the structure is crucial for timely intervention before cracking occurs and the material completely fails. Ultrasound can be used for detecting plastic deformation provided the mechanical modulus, which can be probed via changes in velocities. This work presents a measurement scheme that makes use of optically detected, laser-induced surface acoustic waves (SAWs) for remote, real-time, online monitoring of the wave velocity during the elastic–plastic transition occurring in an aluminum plate undergoing a uniaxial tensile test and a dynamic fatigue test. Monochromatic SAWs were photoacoustically generated in a wavelength-controlled way through a transient thermal grating based laser ultrasonics excitation scheme. The SAWs were detected by a home-built photorefractive interferometer. The results reveal both regions of acceleration and slowing down, indicating that the material first stiffens and then starts to form microcracks that make it behave effectively softer for propagating SAWs.
Numerical study of ice accretion inside an inertial particle separator
Authors: Qiu Changbo , Chen Ningli , Hu Yaping , Wang Biao , Hu Songjun
Published: May 2022

The inertial particle separator (IPS) installed before a helicopter engine runs the risk of ice accretion. This paper describes a numerical study of ice accretion inside an IPS. The effects of the droplet diameter (MVD = 5, 10, and 20 µm), liquid water content (LWC = 0.5, 2, and 4 g/m3), and incoming velocity (U0 = 45, 60, and 90 m/s) on ice accretion are studied. The results show that ice accretes on the windward side of the hub, the bent surface of the shroud, and the leading edge of the splitter. The ice thickness on all the surfaces of the IPS generally increases with increasing U0, MVD, and LWC, with the exception that the ice layer thickness on the splitter surface decreases as the MVD increases. This exception arises because the mass of water droplets impinging on the upper surface of the splitter wall decreases with increasing MVD. The effect of ice accretion on the aerodynamic performance of the IPS is also studied. It is found that ice accretion can block the flow area of the “throat” and the inlet of the scavenge flow channel, thus modifying the aerodynamic shape of the inner surface of the IPS and the internal flow field. When MVD = 10 µm and LWC = 4 g/m3, the scavenge ratio after icing decreases with increasing ice thickness. With the exception of LWC = 0.5 g/m3, the total pressure recovery coefficient of the core flow path of the IPS obviously decreases as the ice layer thickens.
Study on arc extinguishing characteristics of multiple series gap under long clearances
Authors: Li Zijian , Fu Jianjin , Zhou Xueming , Feng Zhiqiang , Yao Yao , Wang Jufeng
Published: May 2022

In order to improve the arcing capability of multiple series gaps, it is very important to understand the arcing principle and the influence of the control length of airflow passage on the arcing process. From the perspective of energy balance, this paper analyzes the feasibility of arc extinguishing by self-ejecting airflow and deduces that the airflow velocity is positively correlated with the control length of the airflow channel. Increasing the control length of the airflow channel can promote airflow development, enhance convection heat dissipation power, accelerate arc cooling, and, thus, improve arc extinguishing efficiency. In this study, a two-dimensional geometric model of the arc extinguishing channel was built through the COMSOL Multiphysics simulation platform, the discharge heat transfer process of the arc under the action of airflow coupling was simulated, and the effectiveness of the arc extinguishing device was verified. The results show that the arc can be extinguished and reignited more quickly and effectively by extending the control length of the airflow passage.
Bulk InAsSb-based upside-down pCBn photodetectors with greater than 5 µm cut-off wavelength
Authors: Chen Dongqiong , Li Dexiang , Xiao Tingting , Shi Jingmei , He Yan , Gong Xiaoxia , Yang Shaopei , Yue Biao , Zhao Jun , Yang Wenyun , Deng Gongrong
Published: May 2022

The InAsSb-based photodetectors covering the whole mid-infrared wavelength at 150 K have been modeled, successfully fabricated, and characterized. In this work, we increased the Sb composition in InAs1−xSbx to extend the cut-off wavelength; simultaneously, the novel upside-down structure was adopted to decrease the dark current to ensure good performance of the device at high operating temperature. The growth sequence of the upside-down InAs0.81Sb0.19/AlAsSb material system was reversed to the conventional nBn structure, and the AlSb/AlAs0.08Sb0.92 electron compound barrier was grown before the InAs0.81Sb0.19 active layer. At 150 K and 0.8 V forward bias, the fabricated photodetector demonstrates a dark current density around 3.46 × 10−4 A/cm2, a peak responsivity up to 1.89 A/W, and a quantum efficiency up to 56% at 4.2 µm, corresponding to 1.23 × 1011 cm Hz1/2/W detectivity.
A computational inspection of the dissociation energy of mid-sized organic dimers
Authors: Czernek Jiří , Brus Jiří , Czerneková Vladimíra
Published: May 2022

The gas-phase value of the dissociation energy (D0) is a key parameter employed in both experimental and theoretical descriptions of noncovalent complexes. The D0 data were obtained for a set of mid-sized organic dimers in their global minima which was located using geometry optimizations that applied ample basis sets together with either the conventional second-order Møller–Plesset (MP2) method or several dispersion-corrected density-functional theory (DFT-D) schemes. The harmonic vibrational zero-point (VZP) and deformation energies from the MP2 calculations were combined with electronic energies from the coupled cluster theory with singles, doubles, and iterative triples [CCSD(T)] extrapolated to the complete basis set (CBS) limit to estimate D0 with the aim of inspecting values that were most recently measured, and an analogous comparison was performed using the DFT-D data. In at least one case (namely, for the aniline⋯methane cluster), the D0 estimate that employed the CCSD(T)/CBS energies differed from experiment in the way that could not be explained by a possible deficiency in the VZP contribution. Curiously, one of the DFT-D schemes (namely, the B3LYP-D3/def2-QZVPPD) was able to reproduce all measured D0 values to within 1.0 kJ/mol from experimental error bars. These findings show the need for further measurements and computations of some of the complexes. In order to facilitate such studies, the physical nature of intermolecular interactions in the investigated dimers was analyzed by means of the DFT-based symmetry-adapted perturbation theory.