bluuebunny/crossref_metadata_2025_split huggingface dataset:
كێشەكانی ڕێنمایکارانی پەروەردەیی لە خوێندنگا بنەڕەتیيەكان
Authors: Ibrahim Hazhar Q. , Braim Peshawa B. 
Published: February 2021

ئه‌م توێژینه‌وه‌یه‌ ئامانجی كاركردنه‌ له‌سه‌ر گه‌شه‌پێدانی بواری په‌روه‌رده‌ و فێركردن، وه‌ له‌و بواره‌دا‌ گرنگی ده‌دات به‌ یه‌كێك له‌ توێژه‌ هه‌ره‌ گرنگه‌كانی ناو ئه‌م بواره،‌‌ كه‌ ڕێنمایكارانی په‌روه‌رده‌یین كه‌ به‌ به‌شێكی گرنگی ئه‌م بواره‌ داده‌نرێت و پرۆسه‌ی ڕێنمایی و ئاڕاسته‌كردنی په‌روه‌ره‌ی و ده‌رونی و كۆمه‌ڵایه‌تی له‌ ئه‌ستۆ ده‌گرن، له‌م چوارچێوه‌یه‌دا، ئه‌م توێژینه‌وه‌یه‌ ئامانجی زانین و دیاریکردنى ئاست و جۆری ئەو کێشانەیه‌‌،‌ کە لە خوێندنگا بنەڕەتيیەکاندا ڕوبەڕوی ڕێنمایکارانى پەروەردەیى دەبنەوە ، بۆ ئەم مەبەستە و بە سود وەرگرتن لە توێژینەوەکانى پێشو پێوەرێکمان ئامادەکرد, کە لە (٢٦) بڕگە پێکهاتبوو, دوای دەرهێنانى تایبەتمەنديیه‌كانى پێوەرى دەرونى (ڕاستگۆیی و جێگیريى) بەسەر نمونەى توێژینەوەکەدا دابەشکرا, کە ژماره‌یان (٢٠) ڕێنمایکارى پەروەردەيی بوو له‌ سنوری په‌روه‌رده‌ی ڕانیه‌، دوایی کۆکردنەوەى داتا و زانیاريیەکان و شیکردنەوەیان بە هەگبەى ئاماریى بۆ زانستە کۆمەڵایەتییەکان (SPSS), ئەنجامەکان ئەوەیان دەرخست, یه‌كه‌م؛ بە شێوەیەکى گشتى ڕێنمایکارانى پەروەردەیى ڕوبەڕوى کێشە دەبنەوە، دووه‌م زۆربەى ئەو کێشانەى دیاریکرابون بەشێوەی بەرچاو دەرکەوتن, به‌شێوه‌یك كە سه‌رجه‌م ئه‌و كێشه‌كانه‌ی به‌ ئاسته‌ به‌رزه‌كانی یه‌كه‌م و دووه‌م و سێیه‌م كه‌ ڕوبه‌روی ڕێنمایكاران ده‌بێته‌وه‌ په‌یوه‌سته‌ به‌ ده‌ره‌وه‌ی خۆیان له‌لایه‌ن حكومه‌ت و به‌ڕێوه‌به‌ر و باوانه‌وه‌ بۆیان دروست ده‌بێت وه‌ ئه‌و لایه‌نانه‌ی كه‌ په‌یوه‌سته‌ به‌ خۆیانه‌وه‌ كه‌متر بۆته‌ هۆی گرفت بۆیان یان هه‌ر گرفتیان نییه‌, له‌ كۆتاییدا توێژه‌ران به‌ پێی ئه‌و ئه‌نجامانه‌ی به‌ده‌ست هاتبوون چه‌ند ڕاسپارده‌ و پێشنیازێكیان خسته‌ڕو‌.
دور برامج الأطفال المتلفزة في مستوى السلوك العدواني لدى أطفال الكورد
Authors: Ali Jwan B. , Mohammed Salam N. 
Published: February 2021

يهدف البحث الى كشف دور البرامج المتلفزة في مستوى السلوك العدواني لدى التلاميذ في الصفوف(الرابع،والخامس،والسادس) من المرحلة الأساسية في مركز قضاء كويه، بشكل عام وفي ضوء بعض المتغيرات مثل (الجنس، مضمون البرامج, الصفوف الدراسية،وعدد ساعات المشاهدة ) ، ولعدم وجود مقياس ملائم باللغة الكردية قامت الباحثة بإعداد مقياس للسلوك العدواني اإذ تم إستخراج الصدق الظاهري من خلال عرض المقياس على مجموعة من الخبراء في الإعلام ،وعلم الاجتماع ،وعلم النفس ،والتربية كما تم إستخراج ثبات المقياس بطريقة (التجزئة النصفية) فبلغ معامل الثبات (٠،٨٧)، ومن ثم تم توزيع المقياس على عينة من أولياء أمور التلاميذ البالغ عددهم ( ٥٠٤) تلميذ موزعين على (٢٦) مدرسة , وأظهرت النتائج إن افراد العينة بشكل عام يتسمون بسلوك عدواني ما دون المتوسط وهناك فروق ذو دلالة إحصائية بين التلاميذ وفق متغيرات (الجنس ،و مضمون البرامج ،و الصفوف الدراسية ،و عدد ساعات المشاهدة )، حيث كان السلوك العدواني لدى التلاميذ الذكور أعلى من التلاميذ الاناث, و كان مستوى السلوك العدواني لدى مشاهدين البرامج ذات المضمون العنيف أعلى من أقرانهم الذين يشاهدون برامج غير عنيفة , كما إن تلاميذ الصف (الرابع) كانوا أَكثرعدوانيةمقارنة بأقرانهم في الصفوف الدراسية الأخرى و ان التلاميذ اللذين يشاهدون التلفاز (أَكثرمن ثلاث ساعات) يوميا هم الأكثر عدوانية من اقرانهم, وفي ضوء نتائج البحث قدمت الباحثة عددا من التوصيات والمقترحات.
PENEGAKAN HUKUM LINTAS JURISDIKSI TERHADAP PELAKU PENCUCIAN UANG DI ASEAN MELALUI MUTUAL LEGAL ASSISTANCE
Authors: Simanjuntak Efendi Lod 
Published: February 2021

Pencucian uang lintas negara sudah menjadi masalah internasional yang memerlukan solusi internasional. Globalisasi telah menimbulkan berkembangnya kejahatan ini dan memudahkan para pelaku melarikan diri ke jurisdiksi asing untuk menghindari tuntutan hukum. Realitas ini dapat menimbulkan impunitas dan ketidakadilan. Oleh karena itu, saatnya penegakan hukum terhadap pelaku kejahatan ini direkonstruksi melalui Mutual Legal Assistance sebagai alternatif terhadap ekstradisi menyusul berlakukannya ASEAN Treaty on Mutual Legal Assistance 2004 in Criminal Matters 2004. Penelitian ini bersifat doktrinal dan diperkuat dengan penelitian lapangan yang ternyata menunjukkan bahwa implementasi MLAT 2004 ini banyak dipengaruhi politik dan ekonomi, sehingga konsep “free-movement of judgement” diharapkan sebagai suatu solusi.
Przeprowadzka literatury
Authors: Gorliński-Kucik Piotr 
Published: February 2021

W artykule autor dokonuje analizy i interpretacji powieści Jacka Dukaja Starość aksolotla, będącej realizacją poetyki powieści e-bookowej, a więc tworzonej bezpośrednio pod wydanie cyfrowe, wzbogacone licznymi grafikami i hiperłączami do przypisów wyjaśniających świat przedstawiony. Stawia tezę o synergii elementów wydarzenia literackiego, jakim była publikacja powieści, w efekcie której wyczytać da się dobrze uargumentowana teza o przenoszeniu się literatury poza podstawowe dla niej medium, jakim jest drukowana książka (i jednocześnie spójnej z poglądami podmiotu powieści Dukaja na transhumanistyczną ewolucję homo sapiens).
Od przekładu intersemiotycznego do produktów typu tie-in, czyli transmedialny storytelling jako strategia tłumaczenia
Authors: Okulska Inez 
Published: February 2021

Na przykładach literackich, filmowych, muzycznych a także tych wymykających się jednoznacznym gatunkowym klasyfikacjom w artykule przedstawione zostały translatorskie serie, rozumiane jako ciąg utworów (lub wręcz produktów) interpretujących oryginał (lub siebie nawzajem) za pomocą innych mediów. Tradycyjne ujęcie przywołujące przekład intersemiotyczny w przypadku każdego niejęzykowego przekładu zostało tu jednak wzbogacone o marketingowo-rynkowe motywacje takich translatorskich działań, zwane transmedialnym storytellingiem oraz strategią sprzedaży produktu tie-in.
Dodatkowe problemy z historią Stefana Szymutki
Authors: Żurek Łukasz 
Published: February 2021

Głównym celem artykułu jest zrekonstruowanie koncepcji „źródła”, którą Stefan Szymutko przedstawił w artykule Źródło, czyli tekstu historii ciąg dalszy: na przykładzie Końca „Zgody Narodów” Teodora Parnickiego oraz prześledzenie, jakie konsekwencje dla praktyki badawczej śląskiego literaturoznawcy wiązały się z jej użyciem. Aby tego dokonać, pokrótce przedstawione zostają podstawowe dla teorii powieści Szymutki pojęcia „tekstu utworu” i „tekstu historii”, wraz z ich filozoficznymi oraz teoretycznoliterackimi inklinacjami. W zakończeniu autor pokazuje, że komplikacje interpretacyjne wprowadzone przez koncepcję „źródła”, skutecznie uniemożliwiły Szymutce finalizację jednego z jego największych projektów badawczych – edycji krytycznej Słowa i ciała Parnickiego.
Kontekst jest do bani
Authors: Felski Rita 
Published: February 2021

Niniejszy artykuł czerpie z prac Bruno Latoura, aby zakwestionować konwencjonalne metody „historycyzacji” i „kontekstualizacji” dzieł sztuki. Zwyczajowo za kontekst uznaje się oryginalny kontekst historyczny, a akt historycyzacji tekstu polega na połączeniu go z innymi tekstami i zdarzeniami wewnątrz tego samego odcinka czasu. W artykule przekonuję, że takie podejście historystyczne nie jest w stanie wyjaśnić transtemporalnych ruchów tekstów, ich zdolności do rezonowania w różnych okresach i sposobów, na jakie do nas dzisiaj przemawiają. Co więcej, tradycyjne modele kontekstu i jego korelatów (społeczeństwa, władzy, ideologii, itp.) zwykle pomniejszają lub jawnie negują sprawczość dzieł sztuki. Co by się stało, gdybyśmy pomyśleli o owych dziełach jako pozaludzkich aktorach, którzy zmieniają aktualną sytuację, wprowadzając różnicę? Takie podejście wymaga od nas rozpoznania specyfiki dzieł sztuki oraz ich towarzyskości i światowości. Dzieła sztuki nie są heroicznymi aktorami zaangażowanymi w nieskończony sprzeciw, subwersję i opór; są raczej współzależnymi współaktorami zanurzonymi w sieć różnorodnych załączników i powiązań, które pozwalają im przetrwać.
Mikrologia jako narzędzie pracy teoretyka literatury. Studium przypadku: Sługa boży Erskine Caldwella
Authors: Dorna Małgorzata 
Published: February 2021

Celem tego eseju jest pokazanie sposobu wykorzystania narzędzi mikropoetyki do analizy konkretnego tekstu, opowieści Erskine Caldwella Sługa boży, stanowiącej specyficzny gatunek wypowiedzi literackiej, a także – wpływu The New Journalism na warsztat pisarza. Ważna jest tutaj niewielka objętość analizowanego utworu, przekonanie o roli przypadku, codziennego zdarzenia, styl kolokwialny, brak literackich odniesień i zapożyczeń, szczególny sposób przedstawienia bohaterów. Cechą charakterystyczną prozy E. Caldwella jest także fakt udramatyzowania poszczególnych scen oraz podjęcie próby „teatralizacji” postaci.
Existence of Solutions for Choquard Type Elliptic Problems with Doubly Critical Nonlinearities
Authors: Shen Yansheng 
Published: February 2021

Abstract
In this article, we first study the existence of nontrivial solutions to the nonlocal elliptic problems in

ℝ
N

{\mathbb{R}^{N}}

involving fractional Laplacians and the Hardy–Sobolev–Maz’ya potential. Using variational methods, we investigate the attainability of the corresponding minimization problem, and then obtain the existence of solutions. We also consider another Choquard type equation involving the p-Laplacian and critical nonlinearities in

ℝ
N

{\mathbb{R}^{N}}

.
Liouville Results and Asymptotics of Solutions of a Quasilinear Elliptic Equation with Supercritical Source Gradient Term
Authors: Bidaut-Véron Marie-Françoise 
Published: February 2021

Abstract
We consider the elliptic quasilinear equation

-

Δ
m

⁢
u

=

u
p

⁢

|

∇
⁡
u

|

q

{-\Delta_{m}u=u^{p}\lvert\nabla u\rvert^{q}}

in

ℝ
N

{\mathbb{R}^{N}}

,

q
≥
m

{q\geq m}

and

p
>
0

{p>0}

,

1
<
m
<
N

{1<m<N}

. Our main result is a Liouville-type property, namely, all the positive

C
1

{C^{1}}

solutions in

ℝ
N

{\mathbb{R}^{N}}

are constant. We also give their asymptotic behaviour; all the solutions in an exterior domain

ℝ
N

∖

B

r
0

{\mathbb{R}^{N}\setminus B_{r_{0}}}

are bounded. The solutions in

B

r
0

∖

{
0
}

{B_{r_{0}}\setminus\{0\}}

can be extended as continuous functions in

B

r
0

{B_{r_{0}}}

. The solutions in

ℝ
N

∖

{
0
}

{\mathbb{R}^{N}\setminus\{0\}}

has a finite limit

l
≥
0

{l\geq 0}

as

|
x
|

→
∞

{\lvert x\rvert\to\infty}

. Our main argument is a Bernstein estimate of the gradient of a power of the solution, combined with a precise Osserman-type estimate for the equation satisfied by the gradient.
In Our Image: The Ethics of CRISPR Genome Editing
Authors: Eissenberg Joel C. 
Published: February 2021

Abstract
The advent of genome editing technology promises to transform human health, livestock and agriculture, and to eradicate pest species. This transformative power demands urgent scrutiny and resolution of the ethical conflicts attached to the creation and release of engineered genomes. Here, I discuss the ethics surrounding the transformative CRISPR/Cas9-mediated genome editing technology in the contexts of human genome editing to eradicate genetic disease and of gene drive technology to eradicate animal vectors of human disease.
Recovery of γ-Fe2O3 from copper ore tailings by magnetization roasting and magnetic separation
Authors: Luo Bing , Peng Tongjiang , Sun Hongjuan 
Published: February 2021

Abstract
To comprehensively reuse copper ore tailings, the recovery of γ-Fe2O3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect to roasting temperature, residence time, airflow, particle size distribution, magnetic field intensity, and the ratio of sodium dodecyl sulfonate to roasted slag were investigated. Under optimum parameters, a great number of γ-Fe2O3 is recycled with a grade of 66.86% and a yield rate of 67.21%. Meanwhile, the microstructure, phase transformation and magnetic property of copper ore tailings, roasted slag, and magnetic concentrate are carried out.
Towards a Formal Specification of Production Processes Suitable for Automatic Execution
Authors: Vještica Marko , Dimitrieski Vladimir , Pisarić Milan , Kordić Slavica , Ristić Sonja , Luković Ivan 
Published: February 2021

Abstract
Technological advances and increasing customer need for highly customized products have triggered a fourth industrial revolution. A digital revolution in the manufacturing industry is enforced by introducing smart devices and knowledge bases to form intelligent manufacturing information systems. One of the goals of the digital revolution is to allow flexibility of smart factories by automating shop floor changes based on the changes in input production processes and ordered products. In order to make this possible, a formal language to describe production processes is needed, together with a code generator for its models and an engine to execute the code on smart devices. Existing process modeling languages are not usually tailored to model production processes, especially if models are needed for automatic code generation. In this paper we propose a research on Industry 4.0 manufacturing using a Domain-Specific Modeling Language (DSML) within a Model-Driven Software Development (MDSD) approach to model production processes. The models would be used to generate instructions to smart devices and human workers, and gather a feedback from them during the process execution. A pilot comparative analysis of three modeling languages that are commonly used for process modeling is given with the goal of identifying supported modeling concepts, good practices and usage patterns.
Structuring of hydroxy-terminated polydimethylsiloxane filled by fumed silica
Authors: Peng Zhengwei , Qin Yan , Song Jiuqiang , Zhu Di , Chen Shuisheng , Ren Jingwen , Li ZhuangZhuang , Zou Zhenyue 
Published: February 2021

Abstract
The term “structuring” used in silicone rubber describes a phenomenon of the increase in the viscosity of polydimethylsiloxane filled with silica during storage, which limits the applications of the room temperature vulcanized (RTV) silicone rubber in the field of aerospace and military. In this pursuit, the present study was envisaged to solve the problem of structuring of the RTV. A solvent-free method was used to hydrophobize the hydrophilic silica with hexamethyldisilazane. An RTV composition prepared using eight parts of hydrophobic silica with 2.91% C content exhibited a viscosity of less than 100 Pa s, with no significant change in 21 days. In contrast, eight parts of the hydrophilic fumed silica showed an initial viscosity of RTV to be greater than 2,000 Pa s. Silica samples with different adsorbed water content were used to prepare the RTV compositions. It was found that the viscosity of the RTV prepared using the sufficiently dried silica was 5.6 times lower than that of the wet silica. The “dissolution” model of the silica–silica hydrogen bonds in water was proposed. Furthermore, the change in the viscosity of the RTV compositions at different temperatures in the range of −15°C to 30°C was studied. The viscosity of RTV stored at –15°C for 34 days did not change significantly, whereas that stored at room temperature increased from 100 to 1,710 Pa s within 21 days.
Influence of composite structure design on the ablation performance of ethylene propylene diene monomer composites
Authors: Ren Jingwen , Qin Yan , Peng Zhengwei , Li Zhuangzhuang 
Published: February 2021

Abstract
By introducing functional fillers into the ethylene propylene diene monomer matrix, the anti-ablation, thermal insulation, and adhesive layer were prepared, respectively. We have studied the mechanical properties, ablation properties, thermal insulation properties, and bonding properties of different composite structures after design and analyzed the ceramic mechanism. The results showed that the content of ceramic fillers improved the thermal stability and ablation properties of anti-ablation layer composites. The formation of liquid structure can fill the hole defects and ablation pit. The foaming agent improved thermal insulation properties of the thermal insulation layer, and the strength of the bonding layer has been greatly improved. The design of the composite structure can not only reduce the density but also have an excellent thermal insulation effect. And as the thickness of the heat insulation layer increases, the heat blocking effect becomes more excellent.
Potent antibacterial action of phycosynthesized selenium nanoparticles using Spirulina platensis extract
Authors: ElSaied Basant E.F. , Diab Amany M. , Tayel Ahmed A. , Alghuthaymi Mousa A. , Moussa Shaaban H. 
Published: February 2021

Abstract
Selenium nanoparticles (SeNPs) are reinforced safe forms of the essential micronutrient selenium (Se) which take a lead in countless biotechnological and biomedical applications. The phycosynthesis of SeNPs was successfully investigated using cell-free extract of the microalgae, Spirulina platensis. The phycosynthesized S. platensis-SeNPs (SpSeNPs) were characterized using several characterization techniques such as UV-Visible, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and energy dispersive X-ray. They were effectually achieved using different concentration from sodium selenite (Na2SeO3) (1, 5, and 10 mM) to give size means of 12.64, 8.61, and 5.93 nm, respectively, with spherical shapes and highly negative zeta potentialities. The infrared analyses revealed the involvement of many phycochemials in SpSeNPs production. The antibacterial properties of SpSeNPs were confirmed, qualitatively and quantitatively, against foodborne microorganisms (Staphylococcus aureus and Salmonella typhimurium); the antibacterial activity was correlated and increased with SeNPs’ size diminution. The scanning micrographs of S. typhimurium cells treated with SpSeNPs indicated the severe action of nanoparticles to destroy bacterial cells in time-dependent manners. The innovative facile phycosynthesis of SeNPs using S. platensis is recommended to generate effectual bioactive agents to control hazardous bacterial species.
Anticancer activity of novel Schiff bases and azo dyes derived from 3-amino-4-hydroxy-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione
Authors: Saeed Abdeltawab Mohamed , AlNeyadi Shaikha S. , Abdou Ibrahim M. 
Published: February 2021

Abstract
New Schiff bases and azo dyes derivatives have been synthesized via appropriate conventional methods using pyranoquinolinone as a starting material. The compounds obtained were characterized by spectral analysis and evaluated for anticancer activity in several human tumor cell lines: MCF-7 breast cancer, HepG2 liver cancer and HCT-116 colon carcinoma. 5-fluorouracil was used as a reference drug. The in vitro cytotoxicity screening results revealed that all tested compounds showed promising activity against MCF-7 cells. In particular, compounds 6a, 6b, and 7b showed excellent activity against the three human tumor cell lines. Structure-activity relationship studies indicated that the azo derivative with a trifluoromethoxy group (compound 7b) was the most potent candidate against the three human tumor cell lines (IC50, 1.82-8.06 μg/mL). Our findings highlight pyranoquinolinone analogues as a promising class of compounds for new anticancer therapies.
Design, Synthesis and Biological Evaluation of N-((2-phenyloxazol-4-yl)methyl) Pyrimidine Carboxamide Derivatives as Potential Fungicidal Agents
Authors: Huang Danling , Zheng Shumin , Cheng Yong-Xian 
Published: February 2021

Abstract
Twelve N-((2-phenyloxazol-4-yl)methyl) pyrimidine carboxamide derivatives were designed, synthesized, and characterized by 1H NMR, 13C NMR, and HRMS. The fungicidal activities of these new compounds against Sclerotinia sclerotiorum, Botrytis cinereal, and Colletotrichum fragariae were evaluated. The results indicated that compounds 5b, 5f, and 5g displayed potential fungicidal activities against tested fungi, especially 5f exhibited IC50 value of 28.9 mg/L against S. sclerotiorum. Moreover, the compounds 5f and 5g showed IC50 values of 54.8 mg/L and 62.2 mg/L against C. fragariae respectively, which shows that they were more active than the commercial fungicide hymexazol. The superficial structure-activity relationships were discussed, which may be of benefit for the development of fungicides and discovery of novel fungicides.
Dynamic recrystallisation and modelling of microstructural evolution of high-titanium-content 6061 aluminium alloy
Authors: Chen Wei , Gu Yanfei , Guan Yingping , Dong Chunfa 
Published: February 2021

Abstract
The dynamic recrystallisation behaviour of high-titaniumcontent 6061 aluminium alloy was investigated by hot compression tests within the temperature range of 623- 783 K and at strain rates of 0.01 -10 s-1. The characteristics of the true stress-strain curves acquired in the hot compression tests were investigated, and it was observed that the dynamic recrystallisation of high-titanium-content 6061 aluminium alloy occurs within the range of deformation temperatures of 623 -783 K, with strain rates of 0.001 - 0.1 s-1as evinced by a physically-based constitutive analysis. The kinetic model of dynamic recrystallisation was deduced to describe the dynamic recrystallisation behaviour of high-titanium-content 6061 aluminium alloy, and the dynamic recrystallisation grain size model was also constructed.
High-strength wire + arc additive manufactured steel
Authors: Guo Chun , Liu Maoxue , Hu Ruizhang , Yang Tuoyu , Wei Baoli , Chen Feng , Zhang Liyong 
Published: February 2021

Abstract
High-strength 690-MPa steel was prepared using a wire + arc additive manufacturing (WAAM) technology. The phase composition, microstructure, and crystal structure of highstrength 690-MPa steel samples were analysed, and the results show that a sample prepared using WAAM technology achieves a good formation quality. The metallographic structure was mainly acicular ferrite, massive ferrite, and granular bainite. The microhardness distribution of the vertical and horizontal sections of the samples is uniform. Excellent mechanical properties of the specimen were shown, including a horizontal yield strength of 536 MPa, a tensile strength of 760 MPa, an elongation of 23.5%, a Charpy impact value of 70 J at -508C, a vertical yield strength of 486 MPa, a tensile strength of 758 MPa, an elongation of 21.5%, and a Charpy impact value of 51 J at -508C.
Investigation of time-dependent corrosion behavior of Sr-modified AlSi12 alloy
Authors: Hapçı Aǧaoǧlu Gökçe , Kaan Duygun İnal , Orhan Gökhan 
Published: February 2021

Abstract
The effect of Sr addition on the microstructure and time-dependent corrosion properties of the AlSi12 eutectic alloy was investigated. The modified alloy contained 90 ± 3 ppm Sr. The microstructural differences in the eutectic structure of AlSi12 alloys were assessed in terms of the Si particle size and a-Al volume fraction. The unmodified and Sr-modified alloys were immersed for 1, 24, 72 and 120 h in 3.5 wt.% NaCl. Electrochemical impedance spectroscopy and potentiodynamic polarization techniques were performed to analyze the corrosion characteristics of the alloys. Sr addition led to a decrease in the Si particle size, and the formation of long dendritic a-Al. It was found that the presence of Sr resulted in more stable corrosion behavior up to 24 h. The deterioration of the corrosion behavior of Sr-modified alloy was observed with the further increase of immersion time.
Synthesis of LiCoO2 particles with tunable sizes by a urea-based-homogeneous-precipitation method
Authors: Motoyama Munekazu , Iwasaki Hiroki , Sakakura Miyuki , Yamamoto Takayuki , Iriyama Yasutoshi 
Published: February 2021

Abstract
This paper reports the synthesis of monodisperse spherical LiCoO2 particles in a wide range of average diameter using a urea-based-uniform-precipitation method. The average diameter of LiCoO2 particles can be varied from 2 to 14 lm with a uniform size distribution. The effective approach to maintain the size uniformity while changing the average size of LiCoO2 particles is to keep the ratio of [CO(NH2)2] to [CoSO4] at 8 even when the CoSO4 and urea concentrations are changed.