bluuebunny/crossref_metadata_2025_split huggingface dataset:
Power fluctuations in high-installation- density offshore wind fleets
Authors: Murcia Leon Juan Pablo , Koivisto Matti Juhani , Sørensen Poul , Magnant Philippe 
Published: March 2021

Abstract. Detailed simulation of wind generation as driven by weather patterns is required to quantify the impact on the electrical grid of the power fluctuations in offshore wind power fleets. This paper focuses on studying the power fluctuations of high-installation-density offshore fleets since they present a growing challenge to the operation and planning of power systems in Europe. The Belgian offshore fleet is studied because it has the highest density of installation in Europe by 2020, and a new extension is expected to be fully operational by 2028. Different stages of the future installed capacity, turbine technology, and turbine storm shutdown technologies are examined and compared. This paper analyzes the distribution of power fluctuations both overall and during high wind speeds. The simulations presented in this paper use a new Student t-distributed wind speed fluctuation model that captures the missing spectra from the weather reanalysis simulations. An updated plant storm shutdown model captures the plant behavior of modern high-wind-speed turbine operation. Detailed wake modeling is carried out using a calibrated engineering wake model to capture the Belgium offshore fleet and its tight farm-to-farm spacing. Long generation time series based on 37 years of historical weather data in 5 min resolution are simulated to quantify the extreme fleet-level power fluctuations. The model validation with respect to the operational data of the 2018 fleet shows that the methodology presented in this paper can capture the distribution of wind power and its spatiotemporal characteristics. The results show that the standardized generation ramps are expected to be reduced towards the 4.4 GW of installations due to the larger distances between plants. The most extreme power fluctuations occur during high wind speeds, with large ramp-downs occurring in extreme storm events. Extreme ramp-downs are mitigated using modern turbine storm shutdown technologies, while extreme ramp-ups can be mitigated by the system operator. Extreme ramping events also occur at below-rated wind speeds, but mitigation of such ramping events remains a challenge for transmission system operators.
KEMAMPUAN MENULIS TEKS PROSEDUR SISWA KELAS X OTKP SMK NEGERI 1 MUARA BUNGO KABUPATEN BUNGO
Authors: BAGYO SU 
Published: March 2021

“Kemampuan menulis Teks Prosedur SMK Negeri 1 Muara Bungo”. Penelitian Tindakan Kelas (PTK). Mata Peajaran Bahasa Indonesia, Penelitian ini bertujuan untuk: (1) mendeskripsikan kemampuan menulis teks prosedur siswa kelas X, (2) mendeskripsikan kemampuan menulis teks prosedur siswa kelas X pada aspek isi; (3) mendeskripsikan kemampuan menulis teks prosedur siswa kelas X pada aspek struktur; (4) mendeskripsikan kemampuan menulis teks prosedur siswa kelas X pada aspek kaidah penulisan; (5) mendeskripsikan kemampuan menulis teks prosedur siswa kelas X pada aspek ciri kebahasaan. jenis penelitian deskriptif kuantitatif yaitu penelitian yang menghasilkan bentuk angka-angka untuk mengukur kemampuan menulis teks prosedur siswa kelas X OTKP SMK Negeri 1 Muara Bungo. Hasil penelitian menunjukkan bahwa siswa kelas X OTKP SMK Negeri 1 Muara Bungo memperoleh nilai rata-rata 80,54 dengan persentase 77,41% yaitu mampu menulis teks prosedur. pada aspek isi, nilai rata-rata siswa sampel berada dalam kategori mampu dengan nilai 86,29. Pada aspek struktur, nilai rata-rata siswa smapel berada dalam kategori mampu dengan nilai 85,48. Pada aspek kaidah penulisan, nilai rata-rata siswa sampel berada dalam kategori cukup dengan nilai 73,79, dan pada aspek ciri kebahasaan, nilai rata-rata siswa sampel berada dalam kategori cukup dengan nilai 77,01.
Utopian Views: Paolo Mantegazza's Techniques of the (Im)Possible
Authors: Göschl Albert 
Published: March 2021

AbstractThis article analyzes the depiction of the impossible in Paolo Mantegazza's L'anno 3000 (1897). Starting from the literary theory of possible worlds, it will be shown that the depiction of the impossible in Mantegazza's novel is associated with specific technologies that implicate different types of perception. The three forms of perception developed in the novel (transparent, panoptic, and psychoscopic) move from possible to highly impossible depictions regarding the scientific culture of fin de siècle Italy.
Equality, Liberty, and Fraternity: The Relevance of Edward Bellamy's Utopia for Contemporary Political Theory
Authors: Lizárraga Fernando Alberto 
Published: March 2021

Abstract
Contemporary political theories have made significant progress toward identifying the principles for an egalitarian society. From this perspective, Edward Bellamy's radical and pluralistic egalitarianism can be read not only as a relevant precedent but as a source of sophisticated arguments capable of enriching current debates. Although unfairly overlooked as theoretical works, Bellamy's utopias can be read today as offering insights that bring together and combine key modern ideals of liberty, equality, and fraternity. Therefore, this article argues that Bellamy's conception of equality involves several dimensions and functions as a background condition for effective (republican and liberal) freedoms; that these liberties are not at odds with voluntary equality; and that fraternity—understood in Rawlsian terms—makes sense in a free and equal soci- ety, as it is guaranteed both by institutional means and by personal decisions.
Gottfried Semper
Authors: Herrmann Wolfgang 
Published: March 2021

Herrmann traces his life, analyzes his writings, including his major work, Der Stil, and presents translations of recently uncovered texts.
Preface by Adolf Max Vogt For the generation after Karl Frederich Schinkel, Gottfried Semper (1803-1879) was the most admired architect in Germany. His buildings, such as the opera houses in Dresden and two museums in Vienna, were outstanding examples of their kind. To later generations, however, Semper is known primarily for his writings. Although Semper is arguably the 19th century's most important theoretician, the subtlety of his thought and the difficulty of his German have kept his works from being translated and his contribution from being assessed until now. Herrmann traces his life, analyzes his writings—in particular his major work, Der Stil and presents translations of recently uncovered texts. Der Stil, long a basic source of ideas for architects, had a profound impact on European modernists and proto-modernists alike. H.P. Berlage, Otto Wagner, Bruno Taut, and Walter Gropius were influenced by it, as were any number of American architects, including Bernard Maybeck and Louis Sullivan. Following the biographical chapters, which clarify the extent to which Semper's strongly held political convictions (he was forced to flee Dresden after the revolution of 1849 failed) informed his ideas about architecture, Herrmann presents the colorful genesis of Der Stil. Through his close reading of the texts, Herrmann brings to light Semper's position on iron, on Gothic and contemporary architecture, on the primitive hut, and on the ideas of the archaeologist Karl B. Cher. Among the previously unpublished manuscripts that conclude the book is material essential to a clear understanding of the ideas developed in Der Stil.
Wolfgang Herrmann has spent most of his professional life in England. Political events forced his exile from Germany in 1933. Since then, he has devoted most of his scholarly career to the study of the theory of architecture and has written books on Laugier and Perrault.
De novo assembly ofAmorpha fruticosaL. transcriptome in response to drought stress provides insight into the tolerance mechanisms
Authors: Sun Xinzhu , Hu Songmiao , Wang Xin , Liu He , Zhou Yun wei , Guan Qingjie 
Published: March 2021

BackgroundAmorpha fruticosaL. is a deciduous shrub that is native to North America and has been introduced to China as an ornamental plant. In order to clarify the drought resistance characteristics ofAmorpha fruticosaL. and excavate the related genes involved in drought resistance regulation pathway, the mechanism of drought resistance stress ofAmorpha fruticosaL. was revealed by the changes of transcriptome ofAmorpha fruticosaL. under drought stress.Through the changes of the transcriptome ofAmorpha fruticosaL. under drought stress, the mechanism of anti-stress ofAmorpha fruticosaL. could be revealed.MethodsDifferent concentrations of polyethylene glycol-6000 (PEG-6000) was used to simulate drought stress, and transcriptomic analysis was used to reveal the changes of gene expression patterns inAmorpha fruticosaL. seedlings.ResultsResults showed thatAmorpha fruticosaL. seedlings were seriously affected by PEG-6000. As for the differently expressed genes (DEGs), most of them were up-regulated. The additional Go and KEGG analysis results showed that DEGs were functionally enriched in cell wall, signal transduction and hormonal regulation related pathways. DEGs like AfSOD, AfHSP, AfTGA, AfbZIP and AfGRX play roles in response to drought stress.ConclusionIn conclusion,Amorpha fruticosaL. seedlings were sensitive to drought, which was different fromAmorpha fruticosaL. tree, and the genes functions in drought stress responses via ABA-independent pathways. The up-regulation of Salicylic acid signal related DEGs (AfTGA and AfPR-1) indicated that Salicylic acid play a key role in response to drought stress inAmorpha fruticosaL.
Investigation of the Process of Purification of Wet-Process Phosphoric Acid and Production of Concentrated Phosphoric Fertilizers Based on it
Authors: Kodirova Gulnoza , Shamshidinov Israiljon , Sultonov Boxodir , Najmiddinov Rikxsitilla , Mamurov Bakhodir 
Published: March 2021

Fluoride compounds have the most harmful effects on the environment. The main source of fluoride in the soil is phosphorus-containing fertilizers. Purification of wet-process phosphoric acid (WPPA) from fluorine will significantly reduce its content in phosphorous-containing fertilizers and improve the quality of the resulting products. The aim of the study is to reduce the content of fluorine and sulfates in the wet-process phosphoric acid by introducing calcium carbonate, dolomite or phosphorite into the finished extraction pulp before filtration and obtaining high-quality calcium and magnesium-containing phosphate fertilizers based on it. Phosphates were determined by differential photometric, fluorine – ionometric, calcium, magnesium, aluminum, and iron-complexometric, and sulfates-by weight methods. For the first time, scientifically-based data were obtained on the simultaneous reduction of the content of fluorine and sulfates in WPPA from phosphorites of Central Kyzylkum and the production of calcium-magnesium phosphate fertilizers based on it. Optimal technological parameters of the process of simultaneous defluorination and desulfatation of WPPA from Central Kyzylkum phosphorites with calcium carbonate, dolomite and washed burnt phosphoconcentrate (WСPC) were found by introducing them into the second section of the extractor, into the finished extraction pulp in the amount of 100% for sulfate binding and 100-150% for fluorine binding, as well as obtaining high-quality products based on purified WPPA. The degree of transition of fluorine to the gas phase and phosphogypsum at a rate of 100-150% of calcium oxide for fluorine binding is 86.2-89.4% and its content in the wet-process phosphoric acid decreases from 1.18% to 0.22-0.29%. At the same time, the SO3 content in the acid decreases from 1.21% to 0.24-0.26%. The filtration rate of the sulfate-phosphate pulp varies slightly and is 807.6-812.6 kg/m2·h by dry residue.
Comparative Studies of the Effect of Different Types of Iron Tonics on Umbilical and Middle Cerebral Blood Flow in Cases of Moderate Iron Deficiency Anemia in Late Second Trimester of Pregnant Women
Authors: Elbehiry Basma M. , El-Dakhakhni Raghda A. , Dawood Mohamed F. , Esmail Mohamed M. 
Published: March 2021

Background: Maternal anemia is frequently associated with premature delivery, reduced neonatal weight, infant iron deficiency, neonatal death, and low Apgar scores at 1 min. It is also suspected to reduce the oxygen supply to the growing fetus, leading to the redistribution of fetal blood flow. This study aims to evaluate the effect of the different types of iron medications given to anemic patients on fetal Doppler indices namely umbilical artery and middle cerebral artery in the late second trimester of pregnancy.
Materials and Methods: This cohort prospective study. This study conducted at department of obstetrics and gynecology at Tanta university hospital. Participants consisted of 90 pregnant women during their gestational age (20-28 weeks) they were attended or admitted to obstetric unit.divided into 3 groups. Lactoferrin group included 30 cases received 250 mg lactoferrin capsules once daily for 4 weeks. Iron amino acid chelated group included 30 cases received ferrous bis – glycine chelate (FeBC) 15 mg/day for 4 weeks. Ferrous fumarate group included 30 cases received 350 mg dried ferrous fumarate capsules once daily for 4 weeks. Pre-and post-treatment Doppler measurement of umbilical artery and middle cerebral artery parameter compared 4 weeks after the start of treatment for patients whose anemia successfully treated.
Results: Post hoc analysis of maternal serum hemoglobin of the studied groups show insignificant different between the groups. Pre- and Post-treatment follow-up of resistance index (RI) of the studied groups, Pre- and Post-treatment follow-up of pulsatility index (PI) of the studied groups, Post hoc analysis of pulsatility index (PI) of the studied groups and Post hoc analysis of resistance index (RI) of the studied groups show insignificant different between groups.
Conclusion: Based on our results, it can be concluded that cerebral vasodilatation due to severe maternal anemia is a reversible condition that can be corrected through the prompt treatment of anemia. Additionally, the three therapeutics tested in the current study showed a comparable effect in treating maternal anemia, with subsequent improvement of doppler indices.
The Effect of Different Exercise Intensities on Plasma Endostatin in Healthy Volunteers
Authors: Shah Inayat , Arif Tasleem , Baxendale Ron H. , Iftikhar Muhammad , Khan Alamgir 
Published: March 2021

Background: Physical activity decreases the risk and development of many angiogenesis related health problems including atherosclerosis. Physiological influence of different physical activities on plasma endostatin concentration is contradictory. This study aimed to determine the effects of mild, moderate and vigorous exercise on the concentration of endostatin.
Methodology: 22 participants, 16 males (age = 30.6 ± 7.8 years) and 6 females (age = 26.5 ± 5 years) were recruited. Weekly session of different intensities exercise based on predicted maximum heart (60% (low), 70% (moderate) and 80% (vigorous)] were carried out. One pre and two post exercise samples were taken at 10 and 60 minutes.
Results: Low intensity exercise insignificantly decreased the endostatin concentration at 10 and 60 minutes (P = 0.5 and 0.8). However, moderate (P values = 0.022. 0.004) and vigorous intensities (P= < 0.001, 0.02) increased the endostatin concentrations significantly at both intervals respectively. The effects were not significantly influenced by gender, exercise mode (walking vs running), components of exercise (HR, Speed, Gradients, distance, duration) or metabolism during exercise (VO2 max, VCO2, RER, Energy expenditure).
Conclusion: Low intensity exercises did not influence endostatin concentration. However, moderate to high intensity exercises significantly increase endostatin concentration and may have potential benefits.
Willingness to Test for COVID-19: A Cross-Sectional Study on the Population in the Ha’il Region, KSA
Authors: Khalifa Amany M. , Alshammari Areeb F. , Alrimali Asma M. , Alshammari Rozan A. 
Published: March 2021

Aims: To measure the degree to which the Ha’il community is willing to test for COVID-19 and assess the possible factors that may influence their decision.
Study Design: Descriptive and analytical cross-sectional study.
Place and Duration of Study: The study was conducted in Ḥaʼil Community. And the data was collected from October to November of 2020.
Methodology: Participants comprised of both Saudi and non-Saudi males and females who were 18 years or older and living within the Ha’il region. Participants were recruited via convenience sampling by distributing the electronic questionnaire throughout various social media platforms.
Results: Of the 664 participants, 80.9% reported their willingness to test for COVID-19 if they had olfactory dysfunction with, 80.3% reporting their willingness to test if they had difficulty breathing. However, only 61.7% of participants said that they would be willing to be tested if they had been in contact with someone who had tested positive, whilst they themselves were asymptomatic. More than half of the participants reported that they were confident in the results (81%). Bio-demographic factors that influence the degree of public trust were as follows; females (83.8%); living with others (81.8%); history of not gathering with more than 10 people outside their household (87.9%).
Conclusion: Our finding revealed that the vast majority of the Ha’il community are willing to test for COVID-19, with a high proportion of females, participants who are living with others and participants who do not usually mix with more than 10 people at the same time showing a greater degree of trust in the results of the COVID-19 test. Furthermore, when participants had experienced olfactory dysfunction or\and breathing difficulties themselves, they tended to exhibit greater trust in the COVID-19 test results.
Control Delivery of Multiple Growth Factors to Actively Steer Differentiation and Extracellular Matrix Protein Production
Authors: Damanik Febriyani F. R. , Verkoelen Niels , van Blitterswijk Clemens , Rotmans Joris , Moroni Lorenzo 
Published: March 2021

AbstractIn tissue engineering, biomaterials have been used to steer the host response. This determines the outcome of tissue regeneration, which is modulated by multiple growth factors (GFs). Hence, a sustainable delivery system for GFs is necessary to control tissue regeneration actively. A delivery technique of single and multiple GF combinations, using a layer‐by‐layer (LBL) procedure to improve tissue remodeling, is developed. TGF‐β1, PDGF‐ββ, and IGF‐1 are incorporated on tailor‐made polymeric rods, which could be used as a tool for potential tissue engineering applications, such as templates to induce the formation of in situ tissue engineered blood vessels (TEBVs). Cell response is analyzed in vitro using rat and human dermal fibroblasts for cellular proliferation, fibroblast differentiation, and extracellular matrix (ECM) protein synthesis. Results revealed a higher loading efficiency and control release of GFs incorporated on chloroform and oxygen plasma‐activated (COX) rods. Single PDGF‐ββ and IGF‐1 release, and dual release with TGF‐β1 from COX rods, showed higher cell proliferation when compared to COX rods alone. A substantial increase in α‐smooth muscle actin (α‐SMA) is also observed in GF releasing COX rods, with TGF‐β1 COX rods providing the most pronounced differentiation. A significant increase in collagen and elastin synthesis is observed on all GF releasing COX rods compared to control, with COX rods releasing TGF‐β1 and IGF‐1 providing the highest secretion. TGF‐β1 and IGF‐1 releasing COX rods induced higher Glycosaminoglycan (GAG)/DNA amounts than the other GF releasing COX rods. As PDGF‐ββ and TGF‐β1/PDGF‐ββ COX rods displayed the highest fibroblast attachment, these rods provided the highest total collagen and elastin production. The attractive results from efficiently incorporating single and multiple GFs on COX rods and their sustainable release to steer cellular behavior suggest a promising route to enrich the formation of in situ engineered tissues.
Antibody Engineered Platelets Attracted by Bacteria‐Induced Tumor‐Specific Blood Coagulation for Checkpoint Inhibitor Immunotherapy
Authors: Fan Jin‐Xuan , Liu Xin‐Hua , Wang Xia‐Nan , Niu Mei‐Ting , Chen Qi‐Wen , Zheng Di‐Wei , Wei Jian‐Shuang , Yang Xiao‐Quan , Zeng Xuan , Zhang Xian‐Zheng 
Published: March 2021

AbstractBacteria can act as a promising anti‐tumor platform due to their specific targeting capacity to the tumor microenvironment. In this study, it is discovered that intravenous administration of Escherichia coli TOP10 induces rapid and intense blood coagulation in tumor tissues instead of normal tissues. It is demonstrated that E. coli TOP10 can act as an activator of a coagulation cascade to trigger abnormal hemorrhage, blood coagulation, and inflammation with abundant macrophages recruitment in tumors. In addition, the recruited macrophages are principally polarized by lipopolysaccharide in the bacterial wall to the anti‐tumor M1‐like phenotype. Based on the above finding, coagulation‐tropism blood platelets decorated with CD47 antibodies (Anti‐CD47), which possess tropism for bacteria‐treated tumors are further prepared. As a result, Anti‐CD47 blocks the “don't eat me” signal from tumor cells, consequently promoting the phagocytosis of polarized M1‐like phenotype macrophages for tumor cells. This manipulation of local blood coagulation in tumors may find great potential for accurately delivering immune checkpoint inhibitors and facilitating tumor immunotherapy.
Recent Advances in Electrocatalysts for Proton Exchange Membrane Fuel Cells and Alkaline Membrane Fuel Cells
Authors: Xiao Fei , Wang Yu‐Cheng , Wu Zhi‐Peng , Chen Guangyu , Yang Fei , Zhu Shangqian , Siddharth Kumar , Kong Zhijie , Lu Aolin , Li Jin‐Cheng , Zhong Chuan‐Jian , Zhou Zhi‐You , Shao Minhua 
Published: March 2021

AbstractThe rapid progress of proton exchange membrane fuel cells (PEMFCs) and alkaline exchange membrane fuel cells (AMFCs) has boosted the hydrogen economy concept via diverse energy applications in the past decades. For a holistic understanding of the development status of PEMFCs and AMFCs, recent advancements in electrocatalyst design and catalyst layer optimization, along with cell performance in terms of activity and durability in PEMFCs and AMFCs, are summarized here. The activity, stability, and fuel cell performance of different types of electrocatalysts for both oxygen reduction reaction and hydrogen oxidation reaction are discussed and compared. Research directions on the further development of active, stable, and low‐cost electrocatalysts to meet the ultimate commercialization of PEMFCs and AMFCs are also discussed.