bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photo-activated platelet-rich plasma (PRP)-based patient-specific bio-ink for cartilage tissue engineering
Authors: Irmak Gülseren , Gümüşderelioğlu Menemşe 
Published: June 2020

Abstract
Nowadays, scientists focus on the development of tissue-specific and personalized bio-ink that can be used in 3D bioprinting technologies. Platelet-rich plasma (PRP) is a person-specific source that is used as a therapeutic adjunct for the treatment of cartilage damage because it offers a cocktail of growth factors that are necessary for wound healing and tissue regeneration. However, PRP treatments in the clinic are not satisfactory and require upgrading, especially the point of maintaining bioactivity. In this study, we presented PRP as a photo-activated and photo-crosslinkable bio-ink in terms of tissue-specific structures for the first time. We achieved long-term and constant rate growth factor release and bioactivity protection of PRP with satisfactory mechanical characteristics. Photo-crosslinked PRP hydrogel was enabled by the addition of microwave-induced methacrylated gelatin (Gel-MA), which is connected to platelets in PRP via integrin receptors in its structure and chemically cross-linked upon UV irradiation (300–500 nm). Photo-activation of PRP was realized by a polychromatic light source in the near-infrared region (PAC, 600–1200 nm). Our results showed that Gel-MA/PRP hydrogels with the desired mechanical properties (low degradation rate and high mechanical strength) released growth factors at a constant rate for the long-term by the periodic PAC application. In vitro cell culture studies (viability, proliferation, morphology, histology, immunochemistry, biochemistry, gene expression analyses) proved that proliferation and differentiation of the ATDC5 cells increased in the periodically light-applied Gel-MA/PRP hydrogel without any external chemical agents.
Enhancing the fire weather index with atmospheric instability information
Authors: Pinto Miguel M , DaCamara Carlos C , Hurduc Alexandra , Trigo Ricardo M , Trigo Isabel F 
Published: June 2020

Abstract
The Fire Weather Index (FWI) is widely used to assess the meteorological fire danger in several ecosystems worldwide. One shortcoming of the FWI is that only surface weather conditions are considered, despite the important role often played by atmospheric instability in the development of very large wildfires. In this work, we focus on the Iberian Peninsula for the period spanning 2004–2018. We show that atmospheric instability, assessed by the Continuous Haines Index (CHI), can be used to improve estimates of the probability of exceedance of energy released by fires. To achieve this, we consider a Generalized Pareto (GP) model and we show that by stepwisely introducing the FWI and then the CHI as covariates of the GP parameters, the model is improved at each stage. A comprehensive comparison of results using the GP with the FWI as a covariate and the GP with both the FWI and CHI as covariates allowed us to then define a correction to the FWI, dependent on the CHI, that we coined enhanced FWI (FWIe). Besides ensuring a better performance of this improved FWI version, it is important to stress that the proposed FWIe incorporates efficiently the effect of atmospheric instability into an estimation of fire weather danger and can be easily incorporated into existing systems.
Compelling bounds on equilibration times—the issue with Fermi’s golden rule
Authors: Heveling Robin , Knipschild Lars , Gemmer Jochen 
Published: June 2020

Abstract
Putting a general, physically relevant upper bound on equilibration times in closed quantum systems is a recently much pursued endeavor. In 2017 Phys. Rev. X 7 031027 García-Pintos et al suggest such a bound. We point out that the general assumptions which allow for an actual estimation of this bound are violated in cases in which Fermi’s golden rule and related open quantum system theories apply. To probe the range of applicability of Fermi’s golden rule for systems of the type addressed in the above work, we numerically solve the corresponding Schrödinger equation for some finite spin systems comprising up to 25 spins. These calculations shed light on the breakdown of standard quantum master equations in the ‘superweak’ coupling limit, which occurs for finite sized baths.
Seasonal and regional variation of particulate matter dispersion in Yangon City and Taunggyi City, Myanmar
Authors: Nway Nay Chi , Aung Win Yu , Yi Ei Ei Pan Nu , Thant Zarli , Yagishita Mayuko , Ishigaki Yang , Suzuki Takehiro , Nakajima Daisuke , Win-Shwe Tin-Tin , Mar Ohn 
Published: June 2020

Abstract
Particulate matter (PM) pollution is well-known to be associated with hazardous health outcomes. Data on the PM concentrations in Myanmar are, however, limited. Since, it is very important to determine the air pollution status for further prevention of PM-related health risks in exposed populations, we conducted this preliminary study to assess the PM2.5 and PM10 concentrations in Yangon and Taunggyi Cities during the dry and wet seasons. The PM measurements were made by mobile sensing using Pocket PM2.5 Sensors (Yaguchi Electric Co., Ltd., Miyagi, Japan) in six randomly selected townships of Yangon from January 25th-29th 2018 (dry season) and September 15th-19th 2018 (wet season) and seven quarters (townships are termed as quarters in Taunggyi) of Taunggyi from July 19th-22nd 2018 (wet season). The findings revealed that the PM concentrations in Yangon were significantly higher in the dry season than in the wet season. In the wet season, the PM levels in Yangon dropped to the WHO guideline. However, while the PM10 levels were higher in Taunggyi than in Yangon, the PM2.5 concentrations were significantly higher in Yangon than in Taunggyi. The highest PM levels were found in the Hlaing Tharyar township of Yangon and Myo-ma quarter of Taunggyi among the measured locations. In conclusion, our findings indicated significant seasonal variations in the PM concentrations in Yangon and significant regional variations between the two cities within the same season.
Investigation on Performance Evaluation of Corrugated Low Finned Tubes Oriented for Energy Saving
Authors: Ren Bin , Pu Zhe , Tang Xiaoying , Si Sun , He Aini , Lu Hongliang 
Published: June 2020

Abstract
Heat exchangers are the energy facilities that exchange heat in process industries.Corrugated low finned tube is a kind of helically corrugated tube with trapezoidal shape groove. In this paper, the comparison approach is adopted to evaluate the overall performance of corrugated low finned tubes. The heat transfer and friction factor correlations were firstly introduced. Then the overall performance was evaluated for the identical pressure drop and identical pumping power. Finally, the performance evaluation criteria were fitted as the function of Reynolds number, Prandtl number, pitch to diameter ratio and rib height to diameter ratio. The results showed thatboth the evaluation factors at identical pumping power and at the identical pressure drop are greater than 1.0 over the entire Reynolds number for all the enhanced tubes, indicating that the enhanced tubes have the second best performance oriented from energy-saving.
Economic Analysis of Low-pressure Economizer Retrofit on 670t/h Coal-fired Unit
Authors: Zhou Xingang , Huang Xinyuan , Ding Lirong , Liu Jinglong , Duan Chuanjun 
Published: June 2020

Abstract
After long operation, heat transfer characteristics and flue gas pressure drop of low-pressure economizer are deviated from design value seriously. Through low-pressure economizer retrofit on a 670t/h coal-fired unit, the flue gas pressure drop is decreased to 597.04pa, less than the guarantee value 750Pa, the water saving of desulfurization spraying is 25.92t/h, the reduction of coal consumption for power generation is 2.80g/kW·h. Its energy-saving effect is obvious and transformation expectation is achieved.
Discussion on Standardization of Energy Consumption Quota in Public Institutions
Authors: Lan ZHANG , Yan BAI , Xue BAI , lijuan ZHANG , yanmei YANG 
Published: June 2020

Abstract
The compilation process of the quota standard of public institutions is the self-checking behavior of their own energy consumption. By analyzing the energy usage and characteristics of different types of public institutions, the refinement of energy conservation management of public institutions is gradually realized. This article introduced the background of energy consumption quota management for public institutions in China and the current situation of energy consumption quota of public institutions at home and abroad, determined the energy quota management mechanism of public institutions, proposed methods of the determination of application scope, the classification of organization, the selection of energy consumption quota index and the determination of energy quota value according to related requirements, and discussed the foreground of applying energy consumption quota standards for public institutions.
Study of Heat Transfer Performance of Insulating Layer of Molten Salt Storage Tank
Authors: Yue Song , Liu Xueqing 
Published: June 2020

Abstract
Molten salt storage tank is one of the core equipment of solar thermal power station. The design of thermal insulation layer of molten salt storage tank plays an important role in its safety and economy. It is of great commercial value and academic significance to study the heat transfer performance of the insulating layer of molten salt storage tank. In this paper, the heat transfer models of molten salt storage tank, external insulation layer and tank foundation are established. The temperature distribution and heat loss of the tank are studied. The influence of the insulation nails on the heat transfer performance of the insulation layer is analyzed. The results show that the maximum heat loss lies in insulation layer of the tank wall. Besides, the thickness of the insulating layer greatly influences the temperature drop of molten salt and the time required for steady-state heat transfer. Reasonable setting the length of insulation nail can effectively reduce the surface temperature and heat loss of the insulating layer of molten salt storage tank.
Research on the sustainable development of energy and environment in Tianjin
Authors: Wanru Wei 
Published: June 2020

Abstract
The rapid economic growth greatly increases the pressure of energy consumption, which also brings a series of severe environmental problems such as global warming, which directly restricts the sustainable development of economy and society.Tianjin is an important part of leading and supporting China’s economic and social development, as well as a demonstration area for ecological restoration and environmental improvement.However, Tianjin is also one of the areas with the most serious air pollution and the most acute contradiction between resources and environment and economic development.This paper studies the current development of energy and the environment in Tianjin region and correlation. The results show that there is an inevitable causal relationship between energy consumption and environmental pollution in Tianjin.The government can promote the development of environmental protection industry and the development of new energy and other measures to promote the sustainable development of the energy economic and environmental system in Tianjin.
Research on combustion properties and thermokinetic of pulverized coal: raw and pre-oxidized samples
Authors: Zhai Xiao-wei , Li Jie , Song Bobo 
Published: June 2020

Abstract
The combustion behaviors of raw and pre-oxidized samples for two pulverized coals (PC) were investigated using a thermogravimetric (TG) analyzer. The mass variations, characteristic temperatures and combustion characteristic parameters, et al. of PC during oxidation combustion were analyzed. The results demonstrated that the ignition temperatures (T
i) and burnout temperatures (T
b) of pre-oxidized PC were lower than those of raw PC. The total mass losses of the four samples were 91.33, 92.32, 88.85, and 90.02 mass% respectively, which were consistent with the volatile matter and fixed carbon contents (Vad+FCad). The calculated combustion characteristic parameters (the ignition index C
i, burnout index C
b, and comprehensive combustibility index S
n) of pre-oxidized samples were all greater than those of raw samples, which indicated that pre-oxidized PC was more prone to self-ignition than raw PC under the same conditions. The thermokinetic parameters of PC during pyrolysis and combustion were studied by Coats–Redfern method. The apparent activation energy E
a of these four PC samples ranged from 45.12 to 55.37 kJ/mol.
Application of Distributed Energy System in Iron and Steel Industry and Its Policy Impacts
Authors: Kim Sewon , Li Zhaoyou , An Yongjae 
Published: June 2020

Abstract
After years of development, the concept and connotation of Distributed Energy System (called as DES) are gradually unified. As a way of energy supply in the demand, a revolution of traditional energy system, DES is a new concept of energy conservation in the iron and steel industry, which has been vigorously advocated by the state, and warmly supported and concerned by the international environmental protection work. Iron and steel industry is a high energy consumption industry. With a large number of complex energy conversion and utilization, the production process has developed or is developing a certain amount of DES. According to the definition of the World Alliance for Decentralized Energy (WADE), this paper describes the most representative several DESs in China, and discusses its influences on the energy system of iron and steel enterprises. Finally, some policy suggestions for distributed energy system utilization in iron and steel industry are put forward for the developing countries.
Research on Slow Sand Filtration Simulation System for Salty, Phosphate and Zinc Removal
Authors: Anqi Tu , Zhiyong ZHANG , Yujie Zhu 
Published: June 2020

Abstract
The research focuses on slow sand filtration (SSF) simulation system for salty, phosphate and zinc removal. Salty, phosphate and zinc are all the polluted compostions of rainwater runoff. SSF system is an ideal way to purify the rainwater runoff due to its simplicity of construction and low cost. The paper also introduces the practical applications of SSF system nowadays. With the remarkable economic and human pupulation developments, our world faces the challenges of water scarcity. SSF system has great potential in filtering rainwater to provide no-potable water even potable water.
Research Progress in Application of Low Temperature Plasma Technology for Wastewater Treatment
Authors: Du Zhehua , Lin Xin 
Published: June 2020

Abstract
As a new advanced oxidation technology, low temperature plasma integrates strong oxidizing particles, ultraviolet light decomposition, wet oxidation and other technologies. Compared with other technologies, it has the advantages of no selectivity, no secondary pollution, and mild reaction conditions. At present, low temperature plasma technology has made some achievements, but there are some limitations in the actual scale water treatment application.The mechanism of low temperature plasma oxidation needs to be further studied. The reaction and active factors produced by low temperature plasma in the process of water treatment are very complicated, and there is no uniform conclusion on the reaction mechanism. The stability of plasma discharge depends not only on the parameters of power supply equipment and solution, but also on the design of reactor. How to design a reasonable, efficient and mass transfer reactor by combining various influencing factors is also the future research direction.The combination of low temperature plasma water treatment technology with various advanced oxidation technologies should be strengthened.
Wet air oxidation (WAO) on sludge treatment and its first industrial application in China
Authors: Hu Linlong , Guo Na , Hu Min , Yan Zibo , Gao Rao , Ma Junjie , Hu Yanlong , Peng Li 
Published: June 2020

Abstract
Typical commercial application of WAO on sludge treatment is first used in China, system design and debugging, and effect and cost performance is illustrated in this article. It reduces the temperature and pressure of a typical wet oxidation reaction, and the oxygen supplied is only 30- 50 % of the COD, which is specifically used to treat sludge. After the treatment, the sludge moisture content from 80 % to 45-48 %, and become harmless and stabilized, so it can be used as soil for gardens directly or mixed with other materials. As a supplementary carbon source for the nitrogen removal and phosphorus removal process, the separation solution is rich in organic acids and returned to the sewage plant after the heavy metal removal process. The operating cost of the entire process is 180-200 yuan per ton (80 % moisture content), mainly for electricity consumption.
The Response of Soil Bacterial Communities to Land-use Types in a Subtropical Mountainous Region, Southwestern China
Authors: Zhang Wen , Ding Leilei , Wang Puchang , Zhang Yu , Zhang Yujun 
Published: June 2020

Abstract
In this study, the characteristics of soil bacterial composition and diversity were investigated under four land-use types (afforestation land, FL; abandoned land, SL; native grassland, GL; cultivated land, CL) to explore correlations between land-use types and the bacterial communites in soil in a subtropical mountainous region of southwestern China. The results showed that the dominant taxonomic genera were Actinobacteria and Proteobacteria. Land-use type influenced the bacterial richness and diversity, and ranked as follows: FL>CL>SL>GL. Marked differences in the distribution of taxon assemblages among the different land-use types in soil were found. The relative abundances of Acidobacteria in SL, Proteobacteria in FL, and Chloroflexi in GL presented as being higher than in other land-use types. Among all the physicochemical properties, significant pearson linear correlations between soil bacterial taxonomic genera (Flavobacterium, Sphingomonas, Blastocatella, Zymomonas, Pedomicrobium, Reyranella, Rhodanomonas, Flavisolibacter, Candidatus and Telmatobacter ) and physicochemical properties (pH, TP and LAP) were observed. These findings suggested that land-use type is a major factor that affects the bacterial composition and diversity, and that changes in soil bacterial composition and diversity are associated with shifts in physicochemical properties.
Planning of Humanistic Ecological Landscape in Urban Waterfront Area
Authors: Ying Song 
Published: June 2020

Abstract
In order to relieve the mental pressure in urban life, the ecological landscape park in waterfront area has become the first choice. However, most urban rivers are currently polluted, and worsen the quality of waterfront greening. The paper puts forward the ecological landscape planning of urban waterfront area. The paper expounds the meaning and characteristics of urban waterfront landscape based on Landscape Ecology, including ideas and principles of waterfront ecological landscape design. The waterfront area could be built into humanistic ecological garden landscape and designed rationally plants. The results show that the planning of ecological landscape in waterfront area is consistent with the real landscape, and its idea is expected to provide reference to the planning of waterfront ecological landscape for the city’s future.
Hierarchical porous g-C3N4/Bi5O7I photocatalyst for high gaseous mercury removal
Authors: Zhang Hui , Rao Dao , Wu Jiang , Guan Yu 
Published: June 2020

Abstract
The g-C3N4/Bi5O7I photocatalyst with a hierarchical porous nanostructure (CB-HPN) was successfully synthesized via one-step calcination method. The materials were characterized by XRD, SEM, XPS and PL to investigate the properties of porous nanostructure. The mercury removal efficiency of g-C3N4/Bi5O7I reached up to 80.3%, which was much higher than that of Bi5O7I. It was found that the hierarchical porous nanostructure could modulate the interface charge transfer tracks efficiently and increase the ratio of active factors, thus accelerating photocatalytic oxidation of gaseous mercury (Hg0). Based on the characterization and experiment analysis, a reasonable charge transfer and reaction mechanism for Hg0 oxidation is proposed.
Numerical simulation and field test of double-storey sedimentation tank in potable water treatment
Authors: Zhang Shuo , Wang Ruhua , Xu Jiajiong 
Published: June 2020

Abstract
A method combining CFD and field test is applied to study the influence of geometric parameters of double-storey sedimentation tank on hydraulic characteristics. The results show that the flow field of the sedimentation tank is close to the clear water sedimentation tank and the effect of particles on water flow is relatively small. Longer width, longer length, upper and lower stories with comparable depths, and longer sumps are beneficial for reducing the particle concentration at the outlet. The velocity of the bottom is small and the velocity of the upper storey is large. The floc particles in the front section are larger and the sedimentation speed is larger, and the flocs in the rear section are opposite.
Modelling for Water Resources Protection
Authors: Wuhang Zhang 
Published: June 2020

Abstract
This paper emphasizes the importance of water resource modelling. Due to the transferability and tradability of water resources, all water users will pursue a cost-effective strategy, thus forming the behavior of rational water use and saving water in subconscious. To increase the reliability of water supply and to provide a hedge against future water price volatilities, financial derivatives are incorporated in the water market and analytical solutions for pricing the European option are provided. This research provides a solution for water management problem if water resource is fully marketized, and the solution is applicable for other resources management such as gas, oil, electricity.
Sludge Conditioning Soft Measuement Based on GA-RVM
Authors: Long Luo 
Published: June 2020

Abstract
To solve the highly non-linear problem of sludge conditioning, the Relevance Vector Machine (RVM), was used to softly measure the sludge conditioning process.The parameters of the kernel function seriously affect the comprehensive performance of RVM. Using genetic algorithm (GA)to obtain the optimal kernel function parameters is an effective solution. The simulation results indicated that the filtering performance was basically consistent with the actual value of dosage and the model prediction result, and the target value could be well predicted. It showed that the model had a certain value for industrial application.
Study on Present Situation of Active Stimulation of Recycled Fine Powder
Authors: Li Qinyu , Xu Qian , Ai Wenbo 
Published: June 2020

Abstract
The text describes the current research status of activation technology of recycled fine powder. The influences of all excitation methods on recycled fine powder are introduced, Based on the analysis of the advantages and disadvantages of the existing excitation methods, the paper puts forward suggestions for energy-saving improvement of mechanical grinding, searching for new chemical activators, controlling temperature and humidity and so on, so as to further promote the recycling of recycled fine powder in China.