Miracle-dz/UniFAR-FTUs huggingface dataset:
Development of sustainable concrete using iron ore tailings as sand replacement

The increasing demands for iron ore worldwide have resulted in the generation of billion tonnes of iron ore tailings (IOT) which were found in all the iron ore mining industries. Rapid increase in consumption of river sand due to the increased in construction activities over exploited the riverbeds. This has led to a range of problems which include: depletion of natural sand, increased riverbed depth, water table lowering, intrusion of salinity and destruction of river embankment. This study explored the possibility of using IOT as a replacement for natural river sand in concrete production. Laboratory investigations were conducted to evaluate the characterization of IOT materials in terms of microstructure, physical and chemical properties. Leaching behaviour of IOT materials was also determined. Furthermore, mix design and the evaluation of the fresh and hardened properties of the IOT concrete were executed. Series of concrete were prepared with IOT at a replacement level of 25%, 50%, 75% and 100%, using water to cement ratio (w/c) of 0.40 and 0.60. Fresh properties of mixtures in terms of concrete slumps and density were studied. The hardened properties examined are mechanical strengths, deformation characteristics, durability properties and corrosion measurement. Corrosion rate were evaluated using linear polarization techniques. Finally, microstructural tests in terms of X-ray Diffraction (XRD), Field emission scanning microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR) and Thermo gravimetric analysis (TGA) were concurrently conducted on control and IOT concrete in order to determine the interaction and effect of the IOT material that brings about the performance of the concrete. A correlation coefficient using fitted linear regression analysis was performed on compressive strength to evaluate the significant level of concretes containing IOT. Results showed that IOT affect mixture workability negatively. However, the inclusion of super plasticiser showed tremendous influence in increasing the workability and reduced this drawback. At 50% replacement, the compressive strength of the concrete at 28 days was 65.6 and 37.7 MPa for 0.40 and 0.60 w/c ratio, respectively, which shows an improvement of 9% and 12% over the concrete with river sand. Concrete with IOT indicates a good resistance to carbonation compared to control specimen. Linear polarization resistance (LPR) results indicates that, corrosion rates of 0.02 mm/year for IOT concretes were the same with control at 0.60 w/c ratio while 0.01 mm/year was observed for control at 0.40 w/c ratio. Considering all these test results, 50% river sand replacement with IOT resulted in concrete of excellent strength and adequate durability performance except for exposure to acid attack. However, it has the quality to be used as partial replacement of sand.
Engine knock detection and evaluation: a review

The paper aims at providing a concise revision of current knowledge of engine knock phenomenon based on previously published works. Theories behind the origin of knock are discussed. Differences between knocking combustion in spark-ignition and hard work of compression-ignition engines are explained. An overview of direct and indirect methods of knock occurrence detection is given. The most commonly used indices for the evaluation of knock intensity are presented.
MODELING OF A DUPLEX MILLER AND CONDITIONS OF FORMATION OF TREATMENT OF WHEEL PAIRS OF MAIN ELECTRIC CARDS, DUAL CARS, ELECTRO SECTIONS

The subject matter of the research in the article is the process of restoring the quality and accuracy of the working surface of the wheelsets of the main electric locomotives, electric sections. The purpose of the work is to develop a modeling method for a special shaped cutter with increased productivity, designed to process the profile of locomotive railway wheels taking into account the shaping processes, which is based on the theory of modeling the high-speed milling process through the shaping efficiency coefficient. The article solves the following tasks: substantiation of the importance of upgrading the most promising designs of "duplex" mills, taking into account the reduction of vibrations due to chip crushing, to increase tool wear resistance, machining accuracy, reduce tool readjustment time and, accordingly, reduce equipment downtime, increase processing productivity, determine the mathematical apparatus for calculating model parameters; development of a method for modeling and optimization of shaping processes in the processing of locomotive wheel sets. Such methods were used: fundamentals of system analysis, simulation method. The following results were obtained: the design of a "duplex" milling cutter with a predicted increase in resistance and increase in processing productivity due to modeling of forming processes with a decrease in the sliding angle by three to five times, which was not previously taken into account when designating and selecting cutting parameters, is provided. It is concluded that the model design of the cutter, taking into account "duplex" and the tribological process of modeling shaping during processing, can increase the resistance of the cutters and ensure the full operation of all cups of the cutter. The forming component of the cutting conditions was evaluated taking into account the coefficient of efficiency of the process of forming the surface layer of the machined wheel. The conclusion was made about the need to create new processes of shaping the design and modernization of tools. Various ways of modeling tool systems are considered. A method for creating a "duplex" cutter model is defined. A "duplex" mill is considered and design features of the algorithm for creating such tools are given. The functioning of the shaping parameters during the processing of locomotive wheelsets is formalized in the form of separate mathematical models and formulas, on the basis of which a method for modeling the process of increasing productivity and increasing the resistance of mills is described. Findings: Thus, a new method was created for modeling the process of shaping when machining wheel sets of locomotives with a "duplex" cutter with minimizing the cost of operating the tool and reducing the sliding angle on the arc of cutting the cutter cup with an increase in the quality and accuracy of processing, which makes it possible to significantly reduce the cost of preparing the production and increase processing efficiency.
Relationship between the polymorphisms of MTHFR and MTRR gene and the susceptibility of delivering a child with Down syndrome

Objective To study the relationship between the polymorphisms of methylenetetrahydrofolate reductase (MTHFR) gene C667T and methionine synthase reductase (MTRR) gene A66G involving folate metabolism and the susceptibility of delivering a child with DS in the Chinese Han ethnic females. Methods This study included two groups: mothers who delivered a child with DS (n=30) and the controlled mothers (n=70). The polymorphisms of MTHFR gene C667T and MTRR gene A66G were detected by polymerase chain reaction- restriction fragment length polymorphism (PCR- RFLP). Results The risk of having a child with DS by a pregnant female with mutation genotype in MTHFR and MTRR did not increase. From the analysis on the combined action of the two genes, it also showed that there was no increased risk of having offspring with DS by a female carrier with a MTRR mutation site and any MTHFR mutation site. There was no significant difference in the distribution of MTHFR and MTRR mutation genes between the case group and the control group (P 0.05). Conclusion The polymorphisms of MTRR and MTHFR don′ t increase the risk of having a child with DS by a pregnant female, and the MTRR and MTHFR mutation sites are not the risk factor for a pregnant female to have a child with DS.
A Multivariate Model to Classify Methicillin-Resistant Staphylococcus aureus Infections as Health Care–Associated or Community-Associated Pathogen

I nfections caused by methicillin-resistant Staphylococcus aureus (MRSA) are associated with con- siderable morbidity and mortality. Methicillin-resistant Staphylococcus aureus has been predominantly a health care Y associated (HA-MRSA) pathogen occurring in patients who are chronically debilitated with multiple underlying comorbid conditions. In the 1990s, community-acquired MRSA (CA-MRSA) emerged and differed from HA-MRSA in that it occurred in young healthy individuals. It was also associated with predominantly skin and soft tissue infections, as well as with more severe infections. 1,2 It has been postulated that most isolates of CA-MRSA contain genes encoding for a toxin called Panton-Valentine leukocidin (PVL). This toxin is associated with more severe infections such as necrotizing pneumonia and invasive skin and soft tissue infections. 3 Earlier on, these 2 strains of MRSA had distinct characteristics. However, as the reservoir of the CA-MRSA increased in the community, it started spreading to the health care environment, displacing HA-MRSA. 4,5 In fact, a mathematical model has been developed, which suggests that eventually, CA-MRSA will become the dominant MRSA strain in hospital and health care facilities. 6 Despite this spread, the rates of HA-MRSA are increasing in the community, as it is often associated with health care exposure. Therefore, the boundaries between HA-MRSA and CA-MRSA are pro-gressively blurring. However, for now, CA-MRSA is still distinct from HA-MRSA based on genotypic, phenotypic, and epidemiologic characteristics. Several sets of criteria have been proposed, including one by the Centers for Disease Control and Prevention, 7 to
Factors that influencing patients' decision making for breast conserving surgery

Objective Breast conserving surgery(BCS) has become a standard therapy for early breast cancer patients.This study investigated the relationship between the treatment choice and the social and psychological factors of the patients who were fit for BCS. Methods One hundred and fifteen patients diagnosed as breast cancer in our department were interviewed using a questionnaire.The related factors were compared between the two choice groups. Results Having jobs(OR=17.975,95%CI:1.750-184.571,P=0.015),patient's wish(OR=0.015,95%CI:0.002-0.101,P=0.000),husband's suggestion(OR=0.251,95%CI:0.068-0.926,P=0.038) and the patient's attitude to BCS(OR=0.157,95%CI:0.025-0.989,P=0.049) were all independent factors influencing the patient's decision making for BCS. Conclusions We should include the patients' characteristics and social and psychological factors into consideration when performing BCS.Appropriately introducing the knowledge about BCS to patients and their husbands may help improving the rate of BCS.
P‐9.13: A Vertical Type Photodetector Based on All‐inorganic Perovskite Quantum Dots

In this work, the vertical type photodetector (PD) based on CsPbBr3 QDs with a structure of indium tin oxide (ITO)/ zinc oxide (ZnO)/ CsPbBr3 QDs/ Au is reported. In this device, the ZnO layer acts as a buffer layer, which can improve the uniformity and surface coverage of the CsPbBr3 QDs film to eliminate the current leakage. As a result, the on/ off ratio, D* and rise time (decay time) of CsPbBr3/ZnO hybrid PD is measured to be 2.2x104, 1.06x1011 and 62ms (82ms) under low reverse bias. This work inspires the development of vertical type photodetectors based on the all‐inorganic perovskite quantum dots.
Clinical observation of "Xiezhuo Jiangsuan Decoction" in treating uric acid nephropathy

Objective To observe the clinical efficacy of "Xiezhuo Jiangsuan Decoction" in the treatment of uric acid nephropathy.Methods Seventy-four subjects were randomized into two groups: control group in which 37 cases were treated with Allopurinol and treatment group in which 37 cases were treated with Allopurinol and "Xiezhuo Jiangsuan Decoction",with a course of eight weeks.Results The clinical efficacy was better in the treatment group than in the control group(P0.05);after treatment,the contents of UA,Scr,BUN and 24 h urinary protein were lowered in both groups(P0.05),with lower contents in the treatment group than in the control group(P0.05). Conclusion "Xiezhuo Jiangsuan Decoction" is effective to reduce uric acid and improve kidney functions in the treatment of uric acid nephropathy.
Evaluation of Safe Sleep Practices of Cribs for Kids Class Attendees

Sudden Infant Death Syndrome (SIDS) is a major cause of infant mortality, and sleep-related causes of SIDS are a focus of many strategies to combat infant mortality because they are largely preventable. One intervention that combines the distribution of a portable crib and safe sleep education to families that indicate a financial need is the Cribs for Kids program. The purpose of this study was to assess any changes in recommended safe sleep practices by Cribs for Kids attendees before and after the receipt of a portable crib and safe sleep education. Families who met eligibility criteria were enrolled in the program and provided with a Pack n’ Play portable crib. They completed a survey at the beginning of the class (pre-survey), and telephone surveys were conducted three months after the class (follow up survey). McNemar’s test was used to determine any significant differences between self-reported safe sleep practices during the presurvey and follow up. A total of 94 matched pre-survey and follow up surveys were included in the analyses. Cribs for Kids was successful in providing a safe sleep option for families as significantly more families reported using a Pack n’ Play at night during their follow up than the pre-survey (28.7% vs. 51.1%, p = .002). However, there was a significant decrease in breastfeeding/combination (56.4% vs. 30.9%, p < .001). Other survey items were not significant. However, an increase in the proportion of families adhering to safe sleep recommendations was noted.
Influenza: A Collaborative Approach to Screening and Vaccinating Hospitalized Patients

Project Team Members • Dr. Susan Moffatt-Bruce, Quality and Patient Safety • Dr. Julie Mangino, Epidemiology • Anne VanBuren, Quality and Patient Safety • Jacalyn Buck, Nursing Administration • Amy Knupp, Nursing Quality and Patient Safety • Ruth Labardee, Nursing Quality • Carol Colussi, James Quality • Lindy Martz, James Nursing Quality • Dawn Elsea, OSU East Quality • Trisha Jordan, Pharmacy • John Plant, Legal Services • Linda Locke, Clinical Applications • Kelly Kent, Senior Systems Consultant • Chip Murray, Graduate Administrative Associate • Real-time dashboard report available in the EMR system for real-time patient follow-up and vaccination status.
Controlled Nitrogen Doping of Graphene Quantum Dots through Laser Ablation in Aqueous Solutions for Photoluminescence and Electrocatalytic Applications

Nitrogen-doped graphene quantum dots (N-GQDs) have promising applications in catalysis and photoluminescence, but many existing synthetic methods require uses of harsh chemicals, long reaction times, and complicated purification steps and have poor control over the surface functional groups. Laser ablation in liquid (LAL) is a promising alternative method to prepare nanomaterials because of its fast production, use of fewer chemicals, simple purification, and fewer byproducts and its control of the product by precise tuning of laser ablation parameters. We report the use of LAL to produce N-GQDs from carbon nano-onions in aqueous solutions of ammonia, ethylenediamine, and pyridine. The choice of these dopants allowed for tuning the overall nitrogen content and the distribution of functional groups that led to the control over the photoluminescence emission wavelengths and lifetimes. High concentrations of amine groups tended to red-shift emission and exhibit shorter lifetimes, whereas pyridinic groups wou.
Comparison of Refractive Errors Measured by Plusoptix S08, Potec PRK-6000 and Nidek ARK-30 Hand-Held Autorefractometer in School-Age Children and Adult Population

Yaz›flma Adresi/Address for Correspondence: Dr. Ceyhun Ar›c›, Gülhane Askeri T›p Akademisi, Göz Hastal›klar› Anabilim Dal›, Ankara, Türkiye Tel. : +90 212 572 26 42 Gsm: +90 532 340 93 51 E-posta: ceyhundr@gmail.com Gelifl Tarihi/Received: 02.07. 2010 Kabul Tarihi/Accepted: 27.08. 2010 Özet Amaç: Okulça¤› çocuklar›nda ve yetiflkinlerde Plusoptix SO8 fotorefraktometre, Nidek ARK-30 elde tafl›n›r otorefraktometre ve Potec PRK-6000 otorefraktometre ile saptanan refraksiyon kusurlar›n› karfl›laflt›rmak. Gereç ve Yöntem: Çal›flmaya refraksiyon kusuru d›fl›nda ek bir oküler patoloji bulunmayan 45 hastan›n 90 gözü dahil edildi. Refraksiyon kusurlar› s›ras›yla Potec PRK-6000 otorefraktometre, Nidek ARK-30 elde tafl›n›r otorefraktometre ve Plusoptix S08 fotorefraktometre ile ölçüldü. Çal›flmadaki olgular okul ça¤› pediatrik (Grup 1) ve eriflkin (Grup 2) olmak üzere iki gruba ayr›ld›. Her iki gruptan üç cihazla elde edilen sferik, silindirik, silindirik aks, sferik eflde¤er ve interpupiller mesafe de¤erleri birbiriyle istatistiksel olarak karfl›laflt›r›ld›. Sonuçlar: Olgular›n ortalama yafl› Grup 1’de (n=21) 9,95±3,14, Grup 2’de (n=24) 23,46±5,36 idi. Her iki grupta da üç cihaz ile elde edilen sferik güç ve sferik eflde¤er de¤erleri aç›s›ndan istatistiksel olarak anlaml› bir farkl›l›k mevcutken (p<0,05), silindirik güç aç›s›ndan anlaml› bir farjkl›l›k yoktu (s›ras›yla p=0,641, p=0,431). Her iki grupta cihazlar aras›nda 0° ve 45° akstaki Jackson çapraz silindir güç de¤erlerinde istatistiksel olarak anlaml› bir farkl›l›k bulunmamaktayd› (p>0,05). Potec PRK6000 ve Plusoptix S08 ile saptanan interpupiller mesafe de¤erleri Grup 1’de istatistiksel olarak anlaml› bir fark sergilerken, Grup 2’deki fark anlaml› de¤ildi. Tart›flma: ‹ki grupta da üç cihazla elde edilen silindirik güç ve silindirik aks ölçümleri birbirleriyle uyumlu bulunurken, sferik refraksiyon ve sferik eflde¤er de¤erleri uyumlu bulunmam›flt›r. Akomodasyon, okulça¤› çocuklar› ve genç eriflkinlerdeki sferik refraksiyon ölçümlerinde belirgin flekilde etkili bir faktördür. Bu yüzden cihazlar aras›ndaki farkl›l›ktan akomodasyon sorumlu tutulabilir. (Turk J Ophthalmol 2010; 40: 328-32) Anahtar Kelimeler: Fotorefraksiyon, interpupiller mesafe, k›rma kusurlar›, otorefraksiyon, refraksiyon
Enhancement of Voltammetric Signals Using a Graphene Oxide Modified Carbon Electrode for Electrochemical Paper-Based Analytical Devices

This work presents an enhancement of the voltammetric signal on an electrochemical paper-based analytical device (ePAD) using a graphene oxide (GO) modified carbon electrode. The ePAD is fabricated using a screen printing technique for fabrication of the hydrophobic area and three electrode strips. The graphene film was directly prepared on ePAD by dropping 2 µL of GO dispersed in water onto the working electrode surface and leaving it to dry at room temperature. The electrochemical reduction process of GO was carried out by applying a constant voltage of -1.20 V (vs. Ag/AgCl electrode strip) in 0.1 M KCl for 800 s. The GO-modified carbon working electrode on ePAD was readily obtained and ready to use after removing KCl solution. We tested the enhancement of the voltammetric signal on ePAD with a 6 mM [Fe(CN)6]4–/3– redox couple in 0.1 M KCl supporting electrolyte solution. Our results obtained from cyclic voltammograms showed that the unmodified working electrode and the GO-modified working electrode on ePAD provided similar anodic and cathodic peaks. Due to accelerated electron transfer process, it was found that the GO-modified working electrode on ePAD provided approximately a 2-fold increase in voltammetric signals when compared to the unmodified working electrode on ePAD. The reproducibility (inter-day precision) of the voltammetric signal measurement using a GO-modified working electrode on ePAD was acceptable. The relative standard deviation (RSD) was 5-8%. Therefore, the GO-modified carbon working electrode on ePAD offers an effective approach to enhance the signal and sensitivity for chemical analysis.
A Survey on Tetraethyllead Poisoning during Petroleum-Tank-Cleaning

同石油貯蔵 タ ンクは,戦 前,日 本海軍に よつて建 設 さ れた もので,す べ て道路脇 小山の斜面 を利用 した地下式 で あ り,隧 道 に よつて連絡 されてい る。 直径約40m,高 さ約34mの 円鋳形,鋼 板製で,底 部は コンク リー トでか ため られ,貯 蔵 量は約3万 トンといわれてい る。 タンクの上部 中央 に直径約1. 3mの 穴 があけ られ,作 業者 あるい は作業 に必 要な機 械類 は この中央の穴 より, 簡易 なエ レベ ーターに よつて出入 してい る。 この中央 の 穴 から約10mは なれた ところに,別 の直径約0. 7mの 穴 があ り,送 風機 に よつて ここか ら必要 と思われ るときに 送風 され るとい うこ とであつた。 作業の内容 は,タ ンク 内部の サ ビ落 し,水 洗 い が主 で,そ の方法は,ま ず燃料 を排 除 したの ち,海 水 を満 た し(海 岸に近いた め),タ ンク内に空 ドラム缶を多数 入れ て水面 に浮か し,こ の上に 十字形 の イカ ダを組んでの せ,内 壁 を清掃,次 第 に海水 を抜いて下降 しつつ清掃 を 続 ける。 海水 を抜 くパイ プは タンクの底 から約1. 5mの 高 さにあるため,こ の位置にいた るともはや海水 を抜 く ことがで きないの でイカ ダを解体 し,こ の 間,海 水 はタ ンク底部のパ イプよ り隧道内に あるピッ トに移す 。 最 後 にタ ンクの底 には泥状の汚物が残 るが,こ れはスコ ップ な どでで きるだけかき集め,ド ラム缶に入れてエ レベー ターで吊 り上 げ,タ ンクの外に捨てていた。 作 業者は,白 木綿厚布地製上下つ な ぎ作業 衣,安 全 帽,送 気式 ガスマ スク,ゴ ム手袋,ゴ ム長靴(大 腿 まで のもの),イ カダ上の作業の ときはさらに救命具 も着用 し て作業に従事 していた。 各保護具 は,午 前,午 後,そ れぞれ タンク より上つて きた ときに点検,穴 の あい てい るものや破損 してい るも のは新品 と取換 えるこ とになつてお り,汚 染 の著 しくな い場合は1日,汚 染の とくに著 しい場合は午前 の作 業終 了時に取換 えていた とい う。 保護具の着用 はかな り厳重 に指示 されていた ようであ るが,作 業 者は素裸 の上 に直接 に作業衣 を着用 し てお り,ま た頚部や後頭部 は露 出 していた し,と くにタ ンク 底部 の泥状汚物のす くい上 げの作業時には,半 日で真 黒 になるほ ど汚染 された といわれ る。 1日 の作業時間 は実働7時 間で,毎 日8時 までに現場 事務所 に集 合,8時10分 頃か ら作業開始,12時 か ら13時 まで事務所 で昼食,休 憩,13時10分 頃か ら16時 まで作業 す るのが所定 の労働 時間 となつてい る。 各作業者の タ ン ク内の作業時間は,平 均6時 間 といわれてい る。
Study on the relationship between insufficiency of the kidney yang and airway inflammation in asthmatics in the remmision stage——analysis of 175 cases of asthmatics

mild or moderate asthmatics in the remmision stage were divided into the group of insufficiency of the kidney yang and non insufficiency of the kidney yang in the light of differentiation standard of insufficiency of the kidney yang,the relationship was further observed between insufficiency of the kidney yang and IL 5,ECP.the result indicates that the 124 cases of 175 asthmatics belong to insufficiency of the kidney yang (70.86%);the contents of IL 5 and ECP in serum of the group of insufficiency of the kidney yang are higher than non insufficiency of the kidney yang( P0.05 ). It was showed by this research that asthmatics,especially with insufficiency of the kidney yang,still require positive treatmeat in the remmision stage.
Oxidative Stress in Parkinson's Disease

Summary: Oxidative stress has been hypothesized to contribute to the pathogenesis of Parkinson's disease (PD) on the basis of the propensity for the oxidation of dopamine to generate hydrogen peroxide and the capacity of neuromelanin to attract transition metals that can promote oxidative reactions. An interaction between hydrogen peroxide and iron could yield the cytotoxic hydroxyl radical and induce local tissue damage. Postmortem studies in the substantia nigra of PD patients have shown an increase in iron, a decrease in glutathione, and evidence of oxidative damage to a variety of molecules, including lipids, proteins, and DNA. Moreover, progressive models of parkinsonism have been induced by iron infusion into the substantia nigra, and decreased glutathione has been found in individuals with incidental Lewy bodies who are believed to have preclinical PD. More recently, links have been described between oxidative stress, trophic factors, and apoptosis. These findings suggest that oxidative stress may be an important factor in the pathogenesis of neurodegeneration and an important avenue for continued research. By delaying the introduction of levodopa therapy and by using reduced levodopa levels during the course of treatment, physicians can minimize oxidative stress related to the metabolism of dopamine in PD patients. Dopamine agonists are one treatment option to achieve this goal.