bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Environmental Impacts and High-Effective Solutions of Invasion of Water Hyacinth
Authors: Wang Yajun 
Published: April 2022

Abstract
Water hyacinth is a fast growing and floating aquatic plant native to South America. Water hyacinth is extremely invasive and its high reproduction rate causes water pollution, waterway closure, and death of aquatic organisms. Based on past studies linked to water hyacinth invasion, this paper first analyzes the features of water hyacinth and the effects of excessive growth. Then, they synthesize and assess the effective and efficient solutions to the ecological hazard of water hyacinth invasion from the domains of technology, government, human, and enterprises. In terms of technology, they recommend the authorities adopt water hyacinth removal machines that may also be utilized for animal feed production. The adoption of anaerobic methods to convert water hyacinth leaves into biogas for power generation is also appropriate, as is replacing existing traditional herbicide types with novel herbicide structures. The government should strengthen legal restrictions, prohibit commercial water hyacinth trafficking, and minimize industrial wastewater discharge. Finally, the research revealed that these methods may effectively decrease the environmental destruction caused by the water hyacinth invasion. Therefore, people should enhance the treatment of water hyacinth invasion hazards in order to control the ecology of the watershed and minimize wastewater discharge.
Zoning Study on the Influence of Sluice Operation on Flood Drainage of Plain River Network
Authors: Fang Zhihao , Li Dongfeng , Wang Yanfei , Hu Donghui , Li Zihao 
Published: April 2022

Abstract
The drainage of river network in Yaobei plain is of great significance to the social and economic development of Yuyao and Ningbo. Linhai Pujiang gate and Taojia Road gate are two important gates for drainage of the river network in Yaobei plain. With the different time of opening the gate for dispatching, the water level reduction values of different towns, streets and communities in the river network are different. If the water level decline in the river network area is classified according to a certain way, the impact degree and impact range of sluice drainage on river network drainage can be studied, so as to classify and partition the impact of drainage according to the degree of impact, township streets can formulate different drainage countermeasures. Therefore, it is of great significance to study the impact of gate operation on river network drainage. In order to fully study the flood drainage function of the sea gate of Yaobei plain river network, based on the preliminary establishment and verification of the plane two-dimensional mathematical model of Yuyao plain river network, this paper calculates the changes of water level and velocity in different areas of towns and streets of Yuyao river network with time and region after the flood drainage operation of the gate for 7 hours under different conditions, according to the range of water level drop of 0.05m and different numerical ranges, this paper classifies the influence areas of large gate drainage on Yaobei river network drainage, and obtains seven partitions of the influence of large gate dispatching on Yaobei river network drainage. According to this partition, the regional river network drainage countermeasures are preliminarily analyzed, which provides a reference basis for the drainage decision-making of township streets.
Construction risk evaluation of power mass entrepreneurship and innovation demonstration park under collaborative innovation
Authors: Luo Peng , Jia Xuefeng 
Published: April 2022

Abstract
The power mass entrepreneurship and innovation demonstration park (PMEIDP) provides an incubation and transformation platform and the environment by converging resources such as technology, capital, and demand to promote regional economic development. This paper evaluates the effectiveness of further promoting systematic innovation and efficient use of resources from the perspective of collaborative innovation. Firstly, we build a risk indicators system for the construction risk evaluation of the PMEIDP. Secondly, we adopt the mutual information coefficient (MIC) to simplify the construction risk indicators. Thirdly, we train the fuzzy neural network (FNN) for the risk evaluation of the PMEIDP. Finally, we conduct a case analysis of 5 PMEIDP and provide support for the management of the future development and construction of the PMEIDP.
The Effects of Climate Change on Birds and Approaches to Response
Authors: Li Xiaohan , Liu Yang , Zhu Yuhui 
Published: April 2022

Abstract
Complex changes in climate change have caused numerous changes, such as rising temperature and increasing in precipitation frequency, representing dynamic environmental changes for birds. It results in birds’ responses, such as changes in migration routes. To better understand the responses, the study aims to reveal the impacts of climate change on birds’ behavior and proper approaches toward addressing its effects. The study shows that climate change has caused advanced spring migration, changes in birds’ habitat, higher possibility of disease transmission, earlier egg-laying time, less food availability, and a decline in the bird population. The study also lists possible measures to mitigate climate change’s influence, including environmental policies, partnership with non-government organizations, and decreasing greenhouse emissions. In the future, people should consider identifying knowledge gaps of the link between climate change birds from efforts of interdisciplinarity and multi-academic fields. The same approach also applies to plausible solutions exploration. The study provides a comprehensive summary of the effects of climate change on birds, as well as briefly illustrates the current approaches to mitigate its impacts. It increases the awareness of climate change’s impacts for the present generation, in turn encouraging them to take progressive actions to address the problem for the future generation.
Interstitial doping of K and Mn induced structural distortion and electronic properties changes in all‐inorganic CsPbI2Br perovskite
Authors: Xue Hong-Tao , Hu Zhong-Lin , Luo Ya-Qiao , An Jun-Peng , Tang Fu-Ling 
Published: April 2022

Abstract
CsPbI2Br and its derivatives are promising light harvesters for all-inorganic perovskite photovoltaic devices, whereas the effects of doping on local lattice structures and electronic properties of CsPbI2Br remain unclear. Here the structural distortion and the electronic properties changes of CsPbI2Br caused by the interstitial alkali-metal K and transition-metal Mn dopants were investigated from first-principles calculations. The bond lengths, bond angles, distortion magnitude and volume of both PbI4Br2 octahedrons and dopant-occupied octahedral interstices, as well as density of states and crystal orbital Hamilton population were provided. We found that both the PbI4Br2 octahedrons neighboring to Mn atom and the Mn-occupied octahedral interstice undergo a more significant structural distortion than those in the K-doped CsPbI2Br. Contrary to the exothermic K-doping, the endothermic Mn-doping reduces the volume of Mn-occupied octahedral interstice by shrinking Mn-Br-I atomic plane and elongating Cs-Cs interatomic distance. The interstitial K-doping has little effect on the position and orbital component of valance band (VB) maximum and conduction band (CB) minimum of CsPbI2Br, while the interstitial Mn-doping can not only shift up the VB edge by 0.41 eV but also introduce new unoccupied gap states (Mn-3d states) at the CB edge.
Experimental study on dynamic recrystallization of titanium alloy Ti6Al4V at different strain rates
Authors: Liu Lijuan , Wu Wenge , Zhao Yongjuan , Cheng Yunping , Xiaojun Du , Ma Shuai 
Published: April 2022

Abstract
The dynamic recrystallization condition and law of Ti6Al4V alloy at all strain rates are investigated through thermal processing simulation test, split Hopkinson compression bar test and milling test. The theoretical calculation of the experimental results and the microstructure observation showed that the dynamic recrystallization become possible under the conditions of high strain rate and low strain rate. The model uses two expressions to describe the material constitutive characteristics of different critical strain value intervals; the subprogram written in Fortran language is imported into AdvantEdge FEM software, and the finite element analysis of John-Cook constitutive and improved constitutive is carried out respectively. The comparative study of simulation proves that the improved constitutive equation is closer to the high temperature and high impact environment of high-speed cutting of titanium alloy, which has certain guiding significance for high-speed cutting of titanium alloy.
A simple derivative spectrophotometric method for simultaneously detecting nitrate and nitrite in plasma treated water
Authors: XU Liangsheng , WU Huihong , WANG Xin , CHEN Qiang , OSTRIKOV Kostya (Ken) 
Published: April 2022

Abstract
A spectrophotometric technique is developed to simultaneously quantify nitrate and nitrite in plasma treated water. The measurement is based on examining the inflection points (wavelengths) in the derivative absorbance of the nitrate or nitrite solution. At the inflection points of the pure nitrate solution, the derivative absorbance is zero and independent of the nitrate’s concentration, and thus the nitrite’s concentration in a mixed nitrate and nitrite solution can be obtained by using the Beer’s law at these points. The nitrate’s concentration can also be achieved from the inflection points of nitrite in the same manner. The relation between the tested substance’s (nitrate or nitrite) concentration and the second- or the third-order absorbances is obtained at these inflection points. Test measurements for mixed aqueous solutions of nitrate and nitrite with or without hydrogen peroxide confirm the reliability of this technique. We applied this technique to quantify the nitrate and nitrite generated in air plasma treated aqueous solutions. The results indicate that both nitrate and nitrite concentrations increase with the plasma treatment time, and the nitrite species is found to be generated prior to the nitrate species in the air plasma treated aqueous solution. Moreover, the production rate of total nitrogen species is independent of the solutions’ pH value. These results are relevant to diverse applications of plasma activated solutions in materials processing, biotechnology, medicine and other fields.
Recent progresses of organic photonic synaptic transistors
Authors: Deng Zhonghui , Zhou Bosheng , Xu Yunchao , Jin Chenxing , Liu Wanrong , Liu Biao , Sun Jia , Yang Junliang 
Published: April 2022

Abstract
The use of electronic devices to emulate the unique properties of biological synapses is regarded as the key for the development of the artificial intelligence era to replace the conventional von Neumann’s computing systems. Nowadays, many electronic devices have been proposed to simulate synaptic functions. However, organic photonic synaptic transistors (OPSTs) arise as an ideal candidate due to their comparative advantages, including the facile preparation process, the easy integration, and the tunable optoelectronic properties than the other devices configurations. As a result, they have attracted tremendous attention. Along these lines, in this review, the structure, working principle and synaptic function of the OPSTs are introduced in detail, while several common channel materials and their working mechanism are listed. Finally, the latest progress in the related application fields is introduced, and the perspectives for the future development of photonic synaptic transistors.
A detailed performance analysis of a novel UWB flexible monopole antenna realized with airbrush technique for different technologies
Authors: Geyikoglu Mirac Dilruba , Cavusoglu Bulent 
Published: April 2022

Abstract
In this article, a detailed performance analysis of a novel flexible monopole antenna with a 141.46% impedance bandwidth in the 2.4–14 GHz ultrawideband (UWB) range is present. The antenna is fabricated on a flexible Kapton substrate with compact geometry for different technology applications under different bending conditions. The airbrush printed technique was preferred due to its advantages such as easy production, conductivity control, and no loss of surface waves. The antenna has dimensions of 82 × 57 × 0.125 mm3 and is fed by a coplanar waveguide transmission line. All necessary antenna simulations are performed using Computer Simulation Technology (CST). According to the positions of identical antennas face to face, face to side, side to side, time-domain analysis is performed for the impact response analysis. The transmission coefficient characteristics (S
21) and the group delay are measured for various bending conditions. Time and frequency domain analyzes show that the proposed UWB antenna has the much-needed stable performance in UWB antenna. The proposed UWB antenna has good performance over the operating spectrum for a flat and bending configuration.
Fully solution-processed, light-weight, and ultraflexible organic solar cells
Authors: Güler Ezgi Nur , Distler Andreas , Basu Robin , Brabec Christoph J , Egelhaaf Hans-Joachim 
Published: April 2022

Abstract
Organic photovoltaic (OPV) devices have the potential to be superior to other PV technologies for the use in applications that require very high flexibility or maximum specific power (power-per-weight ratio), such as textile integration, wearable electronics, or outer space applications. However, OPV devices also require encapsulation by barrier films to reduce the degradation driven by extrinsic factors, which in turn limits their flexibility and leads to lower specific power values. In this work, fully solution-processed (including both electrodes) semitransparent organic solar cells (OSCs) with performance comparable with conventional indium tin oxide-based devices are processed directly onto different barrier films of varying thicknesses. Direct cell fabrication onto barrier films leads to the elimination of the additional polyethylene terephthalate substrate and one of the two adhesive layers in the final stack of an encapsulated OPV device by replacing the industrial state-of-the-art sandwich encapsulation with a top-only encapsulation process, which yields significantly thinner and lighter ‘product-relevant’ PV devices. In addition to the increase of the specific power to 0.38 W g−1, which is more than four times higher than sandwich-encapsulated devices, these novel OSCs exhibit better flexibility and survive 5000 bending cycles with 4.5 mm bending radius. Moreover, the devices show comparable stability as conventionally encapsulated devices under constant illumination (1 sun) in ambient air for 1000 h. Finally, degradation under damp heat conditions (65 °C, 85% rh) was investigated and found to be determined by a combination of different factors, namely (UV) light soaking, intrinsic barrier properties, and potential damaging of the barriers during (laser) processing.
Responses of vegetation growth to climate change over the Tibetan Plateau from 1982 to 2018
Authors: Li Xi , Zhang Ke , Li Xin 
Published: April 2022

Abstract
The Tibetan Plateau (TP) plays a critical role in Earth’s climate system and is highly sensitive to global warming. However, comprehensive analysis of the interaction between various climatic factors and vegetation growth across the TP is still limited. Using daily normalized difference vegetation index (NDVI) series interpolated from the 16-day satellite measurements and climatic data during 1982–2018, we investigated the spatiotemporal changes in growing season NDVI (NDVIGS) and associated climatic drivers over the TP and analyzed the responses of NDVIGS to climatic drivers for different vegetation types. Our results show that NDVIGS of the TP as a whole exhibits a significant rising trend (0.0011 year−1; P < 0.01) from 1982 to 2018. However, trends in NDVIGS show apparent spatial heterogeneity over the TP with higher growth rates in forests (trend = 0.012 de−1; P < 0.01) and shrubs (trend = 0.009 de−1; P < 0.01) in the east and southeast than in alpine steppe (trend = 0.003 de−1; P < 0.01) and alpine meadow (trend = 0.006 de−1; P < 0.01) in the west and north. Air temperature, precipitation, and VPD serve as the dominant climatic factor affecting the NDVIGS trends in 62%, 19%, and 12% of the TP, respectively. Additionally, climatic factors show differential impacts on NDVIGS among different vegetation types. Air temperature has a predominantly positive correlation with NDVIGS for all vegetation types, while precipitation has a negative impact on plant growth in the eastern humid forest region but a generally positive impact in the other areas. Our results also highlight that the effect of VPD on NDVIGS varies among different vegetation types. These findings contribute to a systematic understanding of the possible mechanisms underlying the responses of vegetation growth to various climatic drivers across the TP.
Impacts of changing snowfall on seasonal complementarity of hydroelectric and solar power
Authors: Marshall Adrienne M , Chen Jie M 
Published: April 2022

Abstract
Complementarity of variable renewable energy sources at multiple temporal scales is important in order to ensure reliability of a decarbonizing energy system. In this study, we investigate the hypothesis that a decrease in the fraction of precipitation falling as snow (SWE/P) would increase monthly complementarity of hydro and solar power generation in the western U.S. With a focus on 123 dams responsible for 93% of generation, we found that these resources are seasonally complementary at about half of dams, as indicated by the sign of correlation coefficients (ρ). As hypothesized, average SWE/P at individual dams was generally positively correlated with ρ, but the dependence of ρ on SWE/P was non-linear and SWE/P only explained a modest portion of the variance in complementarity. At each dam, the dependence of annual ρ on interannual variations in SWE/P between 2002–2020 was assessed; these relationships were positive at 72% of dams but not statistically significant at the level of individual dams. Finally, at the system scale ρ was significantly related to SWE/P, with a stronger relationship observed than the dependence of total hydropower generation on SWE/P. Notably, the system-scale relationship between ρ and SWE/P changed dramatically in the latter part of the temporal domain (2012–2020), with a much steeper slope and greater fraction of variance explained by SWE/P. These results illustrate the historical relationship between SWE/P, monthly complementarity of hydro and solar power, complexities of these relationships due to snow and watershed hydrology and reservoir management, and a change in the observed relationship between SWE/P and hydropower generation timing. To the extent that hydro and solar power generation complementarity is responsive to SWE/P, expected declines in SWE/P may indicate greater seasonal complementarity but reduced hydropower available for load-balancing when solar power generation is highest.
Venous Thromboembolism Prophylaxis in Plastic Surgery Patients Undergoing Facelift
Authors: Gupta Rohun , John Jithin , Gupta Monik , Shaheen Kenneth 
Published: April 2022

Abstract

Background
In 2011, the American Society of Plastic Surgeons approved the Venous Thromboembolism (VTE) Task Force Report, which recommended the use of the Caprini scoring system, which has been adopted for VTE prophylaxis by most surgical societies in America.

Objectives
The aim of this study is to investigate the incidence of deep vein thrombosis (DVT) and pulmonary embolism (PE) in patients undergoing facelifts at a single institution who did not undergo VTE chemoprophylaxis based on the Caprini scoring system.

Methods
A retrospective chart review was conducted of patients who underwent facelift at a single institution. Patients were included if they were operated on between 2016 and 2021 by the lead surgeon and excluded if they received VTE prophylaxis. Descriptive statistics were conducted to analyze the collected data.

Results
In total, 136 patients were isolated after chart review, and no patients were found to have had DVT or VTE. The average Caprini score was 5.625 and ranged from 3 to 10. There were 3 patients with evidence of postoperative hematoma (Caprini score = 5, 5, 7). The overall hematoma percentage was 2.21%.

Conclusions
Based on the average Caprini score for the patients, all patients should have received VTE chemoprophylaxis. The authors found no VTE-related events in the patients without chemoprophylaxis. This study suggests that while the Caprini scoring system is a critical diagnostic tool for certain surgical procedures, it might not be optimal in predicting VTE in aesthetic patients undergoing surgical procedures.

Level of Evidence: 4
Measurement of changes in CO2 generated from propionate in Caenorhabditis elegans using novel 13CO2 gas analysis
Authors: Miura Kiyoshi , Yamaguchi Hiroki , Miyata Keita , Miyada Tomihiro 
Published: April 2022

Abstract
Caenorhabditis elegans contains two pathways for propionate metabolism, the vitamin B12-dependent and shunt pathways, which are similar to those in humans. In this study, we monitored the changes in propionate metabolism in the whole body of C. elegans using novel 13CO2 gas analysis. We measured the increase in 13CO2 excreted in the air after administering [1-13C]-labeled propionate ([13C]propionate) to the worms. The 13CO2 generated from [13C]propionate in C. elegans increased in a dose-dependent manner, reaching a maximum at 48 h. Enhanced expression of propionate metabolism-related genes was observed after administration of propionate. Knockdown of mmcm-1, which encodes the rate-limiting enzyme of the propionate metabolism, using RNAi reduced 13CO2 excretion. Thus, 13CO2 gas analysis could be confirmed 13CO2 excretion associated with changes in the metabolism of [13C]propionate in nematodes. This analysis can contribute to further understanding of the physiological effects of short-chain fatty acids.