bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of rollers thermal state at hot rolling of long products profiles at 370/150 mill of OJSC “Belorussky steel-works – UKKh “Belorusskaya metallurgical company”
Authors: Strel’chenko A. V. , Astapenko I. V.
Published: September 2019

In the rolling production, rolls with box passes are widely used, which is explained by the best gripping ability and high draw ratio. However, along with these advantages, there are significant drawbacks - the formation of an erosion net along the bottom of the pass and side cracks on the side outlets, since hot rolling of metals and alloys is accompanied by intense wear of the working rollers and welding fixtures, which happens due to exposure to high temperatures and stresses. Therefore, the task of elaboration of rational temperature regime to provide not only stable mill operation, but also high rollers endurance, is rather actual and requires its solution. It is very important to follow the today’s trend to increase continuous mills rolling speed, which will result in still heavier temperature conditions of rollers operation. Results of the study of the rolling process main technological parameters influence on the formation of erosion net across the bottom of the pass presented, as well as magnitude and nature of the distribution of thermal cyclic stresses along the surface layers of the bottom of pass. Study of the thermal state of roughing stands rollers of OJSC “Belorussky steel-works” 370/150 continuous wire-rod mill show, that comparing with intermediate and finished stands rollers they subject more to thermo-cyclic destruction of passes surface, but not to mechanical one. As a result of the computer simulation new data obtained on the character and peculiarities of dynamics of surface thermal state of rollers passes. The possibilities to reduce thermal cyclic stresses by improving the cooling regime of the rolls shown. Using the simulation by the finite elements method, the study of the dynamics of heating and stress state of the surface and subsurface layers of the pass bottom was accomplished. Based on the analysis results of numerical experiments and analytical calculations, isotherms of the surface layers of the bottom of the pass were compiled to select the optimal cooling mode. The data obtained can be used to control the cooling systems of roughing stands rollers of continuous section and pipe hot rolling mills.
COMPARISON OF IMMUNOHISTOCHEMICAL MARKER WITH SPECIAL STAINS IN THE PROGNOSIS OF THE DIFFERENT GRADES OF ORAL SQUAMOUS CELL CARCINOMA
Authors: Nallaiyan Dr. Parthiban , Ramakrishnan Dr. Bharathi , Santigo Dr. Gnanadeepam , Jeyasivanesan Dr. Dhanalakshmi
Published: September 2019

Objectives: The aim of the study is to compare the efficiency of Ki-67 with special stains in the stroma of different grades of Oral Squamous Cell Carcinoma (OSCC) and to evaluate the influence of these changes in predicting the prognosis of these tumors.

Materials and Methods: A total of 30 cases of different grades of Oral Squamous Cell Carcinoma and 6 cases of control were sections and stained with Picrosirus red (PR), combined Alcian blue-periodic acid Schiff reagent (AB-PAS) and Immunohistochemical (IHC) marker Ki-67.

Results: Collagen fibre nature using PR stain and proliferative activity of malignant epithelial cells using IHC marker Ki-67 was found to be statistically significant. Mucin presence using AB-PAS was statistically insignificant.

Conclusion: Prognosis in different grades of oral squamous cell carcinoma can be accessed by change in collagen fibres birefringence, as the tumour progresses there is change from mature to immature collagen. Ki-67 is a good proliferative marker and shows that there is positive correlation with histological grading of oral squamous cell carcinoma. Presence of acidic or neutral mucin in OSCC needed to be further studied. For assessing the prognosis in different grades of OSCC, special stains can also be used.

Keywords: Collagen, Mucin, Squamous cell carcinoma, Ki-67.
水利工程施工管理的质量控制措施分析
Authors: 白 艳玲
Published: September 2019

水利工程是我国民生项目中的重要组成部分,其质量高低对人们的生产生活具有重要影响,因此为有效提高水利工程质量,就要做好施工管理中的质量控制,这样才能保证施工质量,实现施工企业的可持续发展。为了更好地促进水利施工工程在具体实践中能够充分发挥保护周边生态环境的功效,同时为了不断提升我国水利工程建设事业的水平,必须加强对水利工程建设的创新性管理与应用。
青狮潭灌区抢险工程的施工技术措施
Authors: 蒋 海涵
Published: September 2019

青狮潭灌区渠系水工建筑物繁多,地形复杂,险工险段多,容易发生工程抢险事故,通过建立健全工程管理体制,增加工程投资,加强抢险施工技术措施,确保工程安全。
探析电力系统电气设备安装与调试的技术
Authors: 叶 超
Published: September 2019

在电力系统中,电气设备安装与调试技术人员应全面掌握设计图纸,优选安装调试技术,保证电缆和高压开关柜的安装质量,以此推动电力系统的正常运行,满足各行业的电力能源供应需求。
轴瓦冷却器在博斯腾湖泵站的应用
Authors: 姬 疆燕
Published: September 2019

泵站技术供水系统的可靠性是保证水泵机组安全运行的前提。博斯腾湖泵站技术供水系统受湖水水质影响管路堵塞、锈蚀严重,冷却能力降低,不能安全运行。经调研国家实用新型专利产品封闭式内循环冷却水的轴瓦冷却器,采用微电脑控制、自动化程度高、可实现远程监测,易融入现有控制系统,也能够适应将来泵站自动化和信息化改造的要求,用于东泵站技术供水系统改造项目中,运行稳定、安全可靠。
防洪度汛智能指挥决策系统框架研究
Authors: 张 垚
Published: September 2019

从防洪度汛指挥决策的流程出发,分析了传统防汛抗洪指挥决策系统的不足,提出了一种防汛抗洪智能决策系统,详细阐述系统框架结构和功能,指出了智能系统构建过程中的关键问题。该智能系统能在实时信息监测系统基础上,预报下一阶段水文气象、洪水等有关信息,帮助决策者进行风险识别,优化出最佳防洪调度方案供决策者选择。
节能减排理念下的建筑给排水设计研究
Authors: 张 琳 , 赵 娟
Published: September 2019

在可持续发展背景下,建筑行业首当其冲,节能减排成为主要目标,打造环境友好型建筑,对于建筑企业市场竞争优势提升具有积极意义。在建筑设计中,给排水作为重要环节,设计中渗透节能减排理念,结合区域实际情况合理开发和利用水资源,有助于降低资源损耗,减少对环境带来的污染和破坏,创造更为可观的经济效益和环保效益。基于此,本文就建筑给排水设计中节能减排理念渗透展开探究,把握设计要点,编制合理设计方案,指导后续施工活动高质量展开。
加强水利工程施工项目管理的思考
Authors: 李 子明
Published: September 2019

水利施工期间的项目管理属于一项复杂并且长期性的工作,而且水利工程还是经济发展以及社会发展期间的重要基础,其对水利建设整体质量起到重要作用,属于一项基础性的利民工程。伴随我国经济高速发展,国内水利施工期间的项目管理同样取得较大突破和提升。然而因为观念、制度以及组织形式多个方面限制,水利施工期间的项目管理依然存在不少问题。基于此,本文旨在分析水利施工当中项目管理现存问题,并提出相应的改进措施,以期推动水利建设良好发展。
探讨勘测合理开发利用水利水资源的策略
Authors: 崔 俊
Published: September 2019

水资源是国民经济发展的重要资源,是自然资源可持续发展的重要制约因素,也是构成地区农业发展的重要环节。而水文水资源勘测工作对于水资源的合理利用非常重要,其关系到社会经济发展和人们日常生活,基于此,本文阐述了水文水资源勘测的基本要求,结合某水库,对水文水资源勘测现状以及加强水文水资源勘测合理开发利用水资源的策略进行了探讨分析。
关于水文水资源管理及其监测的探讨
Authors: 刘 峰艺
Published: September 2019

目前我国水资源总量相对比较丰富,但真正能够利用的水资源并不多,再加上我国人口基数大,使得人均水资源的占有量非常少,随着社会经济的发展和工业的不断完善,水污染日益严重,对人们赖以生存的栖息地产生了严重影响。因此,为了提高水文和水资源的管理现状,对水文水资源管理及其监测要点进行了探讨分析。
农田水利灌溉渠道工程运行维护及管理
Authors: 李 志坚
Published: September 2019

农田水利灌溉渠道的维护和管理是关乎国计民生的大事,必须要予以足够的重视。文章以农田水利灌溉渠道维护及管理的重要意义为研究起点,详细探讨了当前灌溉渠道维护及管理的主要内容,并结合我国农田水利建设管理的实际,提出了农田水利灌溉渠道工程运行维护及管理保障措施。文章结论对提高我国农田水利灌溉渠道的维护和管理水平,促进农业发展和农民增收具有重要价值。
对两起10kV全冷缩室外电缆终端故障分析
Authors: 林 涛
Published: September 2019

介绍了两起10kV室外终端电缆头故障,通过对故障电缆剥开观察,分析造成电缆故障的原因,并提出了相应的预防措施。
Correlations between air pollutant concentrations in selected urban and rural areas in Poland
Authors: Stelęgowski Artur
Published: September 2019

Correlations between concentrations of selected air pollutants were analyzed in different areas in central Poland from 2012-2016. Three neighboring voivodeships (Lower Silesian, Lodz, and Masovian), were selected for which specific measurement locations were designated in urban and rural areas. The characteristics of the location of monitoring stations allowed to distinguish the following types of measurement stations: “urbantransport”, “urban-background", "suburban-background", "town-background", and "rural-background". Therefore, using the Pearson's linear correlation coefficient, it was possible to analyze the interrelations between the occurrence of air pollution in various types of areas. It was found that the coefficient changed along with the type of area. Moreover, it turned out that the coefficient decreased in each voivodeship along
with a decrease in the population density of the analyzed areas. In addition, concentrations of various air pollutants in given areas were compared. Also, it was observed that the strongest correlations occur between the results of calculations from measurement stations located in the same province.
Green roofs dissemination regarding their potential contribution in addressing the UHI effect
Authors: Klimek Andrzej , Ziogou Isidoros , Michopoulos Apostolos , Zachariadis Theodoros , Gulma Sadiq , Suhanova Dina , Agbonlahor Mure , Jung-Waclik Sabine
Published: September 2019

The article aims at summarising the state of the art in the efforts of researchers and innovators to find viable solutions to mitigate the urban heat island (UHI) effect. This effect is loosely connected with the greenhouse effect, however, it certainly creates a severe negative synergy together with it. As green roofs are a well-known answer how to address the UHI effect, the ways how to make their massive and global deployment convenient are discussed. Initially, the differences and similarities between urbanisation in developed and developing countries are described. Then the paper depicts solutions, especially synergic ones, for making the dissemination of green roofs viable, such as rainwater and energy harvesting or urban agriculture. Then the authors conclude that retrofitting the existing roofs is the only method for reaching the desired scale and discuss available business models necessary for introducing the prosumer approach to the retrofitting.
Kraft pulp bleaching with a P-stage catalyzed by both bicarbonate and TAED
Authors: DAS N. , BOSE S.K. , FRANCIS R.C.
Published: September 2019

Peroxide bleaching of softwood and hardwood (eucalypt) kraft pulps was performed in solutions of sodium bicarbonate (NaHCO3), sodium carbonate (Na2CO3), and sodium hydroxide (NaOH). The conventional P stage (hydrogen peroxide + sodium hydroxide; H2O2 + NaOH) was the most effective brightening system without an additional activator. However, peroxide activation by bicarbonate anion (HCO3–) was obvious in all cases where NaHCO3 or Na2CO3 was used. When N,N,N’,N’-tetraacetylethylenediamine (TAED) was added to the bleaching system, Na2CO3 as the alkali source afforded equal or slightly higher bleached brightness compared to NaOH usage for both the softwood and hardwood pulps. This outcome is attributed to simultaneous peroxide activation by HCO3 and TAED. When applied to the eucalypt pulp, the H2O2/Na2CO3/TAED bleaching system also decreased the brightness loss due to thermal reversion.
Tingkat Kerusakan Lahan Akibat Penambangan Mineral Non-Logam dan Batuan di Daerah Semin, Kabupaten Gunungkidul, Daerah Istimewa Yogyakarta dengan Metode Analytical Hierarchy Process (AHP)
Authors: Ardiansyah Dodi , Budianta Wawan
Published: September 2019

Mining activities often cause land damage. Land damage can be monitored from time to time, so it canbe controlled and solved. This research was conducted in Semin, Gunungkidul Regency, SpecialRegion of Yogyakarta, from November 2017 until March 2018. Semin area consist of many miningactivities and also directly adjacent with Central Java Province in the east and north. Therefore, thestudy of land damage caused by mining activities in this area is very important. The purpose of thisresearch is to know and study the condition of land damage caused by current mining activities. Themethod used in this research is weighting method by using Analytical Hierarchy Process (AHP) tosome parameters which mostly refers to the Decision of Governor of DIY Number 63 year 2003 asobserved parameter, that is 1) The character of rock compilation of excavation, 2) rock fracturing level3) Utilization and management of top soil, 4) Depth of excavation / height of wall, 5) Limit of slope ofexcavation, 6) Reclamation time, 7) Amount of erosion, 8) River flow / sedimentation. The level ofdamage is divided into three, based on the value, that is 1) Good (1.00-1.66), 2) Medium (1.67 - 2.33),and 3) Damaged (2.34 - 3.00). Total mine sites observed were 81 mine sites. There are 10 mine sitesincluded in the Good category, 68 mine sites belonging to the Medium category, and 3 mine sites inthe Damaged category.
Study Of Shape and Inclined Surface Pillar Effect On Strength Of Pillar
Authors: Ramadani Rully Nurhasan , Iswandaru Iswandaru , Wattimena Ridho K. , Rai Made A
Published: September 2019

Study of stability and pillar failure mechanism with a variety of methods have beencarried with empirical and analytical approach. H. Moomivand dan V.S. Vutukuri in 2008 doto research with physical model of coal cubic with ratio of 0,25 to 10 with surface of pillar ishorizontal, this research aims to investigated changes in the ratio of pillar on compressivestrength and pillar mine failure mechanism, to study the relationship do the physical modellingwith 5 variations of height of 5 cm – 40 cm each pillar geometry has 7 variatons inclinedsurface 0o-30o. Samples of the pillar of testing with direction of the axial load on the body pillaruntil failure. Other than that do to 2D numerical modelling with finite element methods withassisted of software Phase2 (Rockscience). Physical modelling result showed the value ofthe compressive strength and the strength of pillar will be increased with the increasing ratioof pillars w/h. Effect of change in the inclined surface pillar to the compressive strength andpillar of strength showed no behavioral changes in the compressive strength and the strengthof the pillars to change the angle of the surface of the pillar. Changes in strength factor andsigma 1 showed decreasing of the value when the angle of the pillar is increasing eventhough the changes in the value of the numerical modeling results are not significant.
Analysis Stability Of Slope in Pit B Miyor Pratama Coal Accompany, Kumanis Atas Village, Talawi Regency, Sawahlunto, West Sumatera
Authors: Nata Refky Adi , Alexander Alexander
Published: September 2019

The purpose of this research is a classification of rock from slopes and analyzes safety factor of slope by fellenius and janbu method. This type of research classified as descriptive. For class of rock mass based on bieniawski 1989 and for processing helped with software slide v. 6.0. Research results explain the total weights of Rock Mass Rating (RMR) from the results of the data from field, the total weights is = 46 so the rocks are at class III (moderate), with cohesion value 250 kPa and the friction angle is 30 o. The value of the slope safety factor pit B PT. Miyor Pratama Coal after using the slide programme V. 6.0 with method of Bishop has Safety factor = 2,093, and with Janbu method has safety factor = 2,180. From two methods include safe condition > 1.
Schema saffico e schema zaglialesco
Authors: Mainini Lorenzo
Published: September 2019

Abstract

The article proposes a new historical and stylistic derivation for the Latin-Romance rhyme structure aaaz. In place of the
Arabic origin (zajal), it supposes a parallelism with the Classical and Medieval Latin Sapphic strophe.

Keywords

Zajal, Sapphic strophe, Early Romance Poetry, Hymnody, Medieval Latin Poetry
水利工程管理的现代化与精细化建设探究
Authors: 李 洪娟
Published: September 2019

水利工程对建设基础设施意义重大，也关系着人们的日常生活。在科学技术的发展和广泛应用中必须紧跟时代发展的步伐，将现代化与精细化管理运用到其中。建设水利工程的主要目的是对地下和地表水资源实施合理调控，做到水资源利用的最大化。主要介绍水利工程在管理中实现精细化和现代化建设的内涵，并探究精细化和现代化建设的具体措施，以期提高水利工程的管理效能。
外加碳源投加点对碳源投加量和总氮去除效率影响的研究
Authors: 连 龙飞
Published: September 2019

2018年7月、9月、10月，在中原环保股份有限公司港区水务分公司进行了外加碳源投加点的试验研究。结果表明：将外加碳源（甲醇）投加点从A2O池厌氧段进口分别调整到缺氧段B段末、C段末和E段末（缺氧段按水流方向划分为5个池容相同的区，依次为ABCDE区）后，在出水各项指标均达标的情况下，外加碳源日均投加量发生了较大的变化。投加在缺氧B区末端的效果最佳，比投加在厌氧进口时节省碳源投加量22.26%，总氮去除率提高3.5%。
新时期基层水土保持监督管理工作的思考
Authors: 赵 霞
Published: September 2019

简政放权、放管结合、优化服务，是党中央国务院在新时期对政府职能部门提出的新要求。按照水利部“水利工程补短板，水利工程强监管”总基调，如何推进“放管服”改革、强化水土保持监督管理，是基层水土保持工作者所面临的一个新课题，需要进一步转变工作作风，创新工作思路，改进工作方法，落实工作责任，提高工作效率。
配电网规划及项目可行性研究探析
Authors: 潘 伟正
Published: September 2019

随着我国电力事业的发展，配电网项目的建设水平有了很大的提升，而前期规划与项目可行性研究作为配电网项目建设的关键，也逐渐得到了电力企业的重视。为此，此文结合配电网建设现状，对当前配电网项目前期规划与可行性研究工作存在的问题展开了深入分析，并在此基础上对有效开展配电网项目规划与可行性分析的策略进行了探讨，希望能够对配电网建设起到一定帮助。
水利工程建设管理创新思路分析
Authors: 张 庆军
Published: September 2019

水利工程是城市建设的基础，是一项惠民设施。随着城市化进程的加快，水利工程在建设数量和规模上都在扩大，这对水利工程管理也提出了新要求。水利建设的管理需要结合工程的实际情况进行改革，这样才可以有效提高工程的建设和质量问题，从而使得水利在各个方面发挥最大的作用。
尾矿库排洪系统设计及优化方法
Authors: 尚 晓军 , 苏 醒龙
Published: September 2019

随着经济社会不断发展，排洪工程日渐增多，与此同时人们的环保意识也不断增强，越发认识到水土保持的重要性，对矿山排洪的重视程度也越来越高，为了更好保障矿区周围人民群众生命财产安全，必须将尾矿库排系统设计和方法做到最优化。从尾矿库排洪系统设计及优化方法进行了探讨。
浅谈水资源在水生态环境中的应用
Authors: 王 江波
Published: September 2019

如今城市规划和发展十分重视生态性建设，建设生态城市的关键在于水生态环境的建设，要注意城市水资源的合理利用，将生态价值发挥到最大值。基于此，文章先分析了建设水生态环境的目标，阐述了水资源和水生态环境的关系，并提出了建设水生态环境中水资源的应用策略。以期合理利用水资源建设水生态环境，让城市生态环境得到优化，利用生态景观推动城市经济的可持续发展。
沟槽开挖施工方案分析
Authors: 杨 磊
Published: September 2019

管道工程在进行沟槽开挖过程中，土方开挖工程施工技术方案直接影响工程进度、质量与成本控制等目标能否实现，开挖方案对工程成本控制与施工安全有着至关重要的作用，在开挖过程中要认真观察地质、地下水等不可见因素，经过观察确认、全方位分析、科学部署，选取相应的机械设备、支护方案、降水措施等等，以此保证沟槽开挖安全的顺利进行，为后续工程施工奠定基础。
风力发电用大功率并网逆变器研究
Authors: 王 振欣
Published: September 2019

在高功率风力发电系统中，连接到电力网络的GTI是实现电力上网的一个整体的重要组成部分，但由于GTI使用的脉冲宽度调制信号开关电源的频率相对来说比较低。因此在发电网络中，输出电流往往包含高电流谐波。高谐波将会增加电路的电能损耗，影响电路的正常运行，加促电路老化甚至产生电路的安全事故，为了减少电流谐振，将T型滤波器连接到电网络GTI系统中，以替换掉传统上的电感滤波器，并将T型滤波器引起的不稳定性提供了一种基于桥臂的闭合电流回路与电压和电流的前馈控制组合的间接控制方案。有效地实现与电力网络连接的GTI可以持久稳定的正常工作，并发挥良好的电力性能。
±800kV特高压直流输电线路的维护措施分析
Authors: 李 明 , 胡 洪炜
Published: September 2019

以预防±800kV特高压直流输电线路故障为目的，针对线路维护措施展开分析。介绍比较常用的检测技术，了解运行维护的重要性;针对线路可能出现的故障，提出预防、维护建议，避免线路因为树障和山火影响其安全性。最终得出结论，±800kV特高压直流输电线路要想实现稳定运行，必须要定期做好维护。
基于BIM技术的面板堆石坝施工管理研究
Authors: 尹 博韬
Published: September 2019

施工过程中出现的问题不能有效预测，造成施工缓慢，工期延长。基于BIM技术和三维模拟软件Navisworks对面板堆石坝的施工过程进行动态模拟，设定不同评价指标将BIM技术的应用情况采用灰色系统理论进行评价。结果表明：BIM技术可以很好地应用于面板堆石坝的施工管理中，并且技术应用的成熟度较高，可有效提高工程施工效率。
KEANEKARAGAMAN MIKROFUNGI TANAH DI TAMAN WISATA ALAM BAUMATA DESA BAUMATA KECAMATAN TAEBENU KABUPATEN KUPANG
Authors: Feni Ewinda Isensi , Ledo Mellissa E.s
Published: September 2019

Abstrak

Penelitian ini bertujuan untuk mengetahui jenis-jenis mikrofungi dan keanekaragaman jenis mikrofungi yang terdapat pada Taman Wisata Alam (TWA) Baumata. Pada penelitian ini mengunakan metode observasi langsung dan Direct metoch .

Penelitian dilakukan di TWA Baumata dan proses isolasi dan identifikasi mikrofungi tanah pada laboratorium biologi Program Studi Pendidikan Biologi Universitas Kristen Artha Wacana Kupang dan laboratorium Penyakit Tumbuhan Fakultas Pertanian Universitas Nusa Cendana Kupang dari bulan November 2017 sampai dengan bulan April 2018. Mikrofungi yang teridentifikasi dibedakan jenisnya kemudian di hitung indeks keanekaragamannya. Hasil menunjukkan bahwa ditemukan 5 jenis mikrofungi tanah yang terdapat pada TWA Baumata yakni Mikrofungi Aspergilus terreus, Aspergilus flavus, Aspergilus niger, Penicillium sp., Thamnidium elegans. Tahapan yang dilalui untuk mendapatkan kelima jenis mikrofungi tanah ini adalah melalui tahapan isolasi, pemurnian dan identifikasi. Dengan menggunakan rumus shannon wiener hasil analisis memperlihatkan bahwa tingkat keanekaragam mikrofungi pada TWA Baumata tergolong sedang dengan nilai indeks keanekaragaman (H’) = 1.2691. Hasil Analisis ini menunjukkan bahwa kondisi tanah TWA Baumata memiliki produktivitas cukup, tekanan ekologi sedang dan kondisi ekosistem yang cukup seimbang.

Kata kunci: Keanekaragaman, Mikrofungi Tanah, dan Taman Wisata Alam Baumata.

Abstract

The research to purpose determine the types of microfungi and the diversity of microfungi found in Baumata Natural Tourism Park (TWA). In the reaseaech using direct observation methods and direct metoch. The research was conducted in Baumata TWA and the process of isolation and identification of soil microfungi in the biology laboratory of the Biology Education Study Program at the Arta Wacana Kupang Christian University and the Plant Disease Laboratory of the Faculty of Agriculture, Nusa Cendana Kupang, from November 2017 to April 2018. The identified microfungi are of different types and then count the diversity index The results showed that there were found 5 types of soil microfungi found in Baumata TWA is Microfungi of Aspergilus terreus, Aspergilus flavus, Aspergilus niger, Penicillium sp., Thamnidium elegans. The stages that are passed to get these five types of microfungi are through the stages of isolation, purification and identification. By using the shannon wiener formula the results of the analysis show that the diversity of microfungi in Baumata TWA is classified as moderate with a diversity index (H ') = 1.2691. The results of this analysis indicate that Baumata TWA soil conditions have sufficient productivity, moderate ecological pressure and fairly balanced ecosystem conditions.

Keywords: Diversity, Soil Microfungi, and Natural Park Baumata
Sistema misto steel deck e suas aplicações na construção civil
Authors: Salomão Pedro Emílio Amador , Santos Alex Abrantes dos , Lorentz Larissa Petrini Alves , Paula Larissa Tatiane Gonçalves de
Published: September 2019

O conceito de laje mista ou então laje com fôrma colaborante, surgiu nos Estados Unidos na década de 1950 e desde então passou a ser amplamente empregado, claramente em edificações metálicas de vários andares. Já no Brasil, começou a ser difundida na década de 1970 pela empresa Robtek (associação entre a empresa americana Robertson e a empresa brasileira Tekno). A laje steel deck ou laje colaborante ou mista como também é conhecida, é uma técnica usada na construção de lajes em edificações de vários portes. Uma laje composta basicamente por chapas ou telhas de aço galvanizado e uma camada de concreto. O uso da laje com formas colaborantes pode ser considerado em projetos de edifícios industriais; em lajes de escolas, rodoviárias; hospitais e órgãos públicos; terminais de aeroportos, passarelas ou pontes; cinemas e em shopping centers; edifícios de escritórios com vários andares. Elas podem usadas em estruturas de concreto e também estruturas metálicas. Esse tipo de laje está sendo muito utilizado, pois a velocidade de execução é muito maior, uma das principais características ditas por especialistas da área. Tanto em obras comerciais, residenciais ou industriais, esse tipo de laje geralmente é aplicada em obras onde há entrega em prazos curtos e a necessidade de racionalização dos processos construtivos.
Marketing digital e suas contribuições na divulgação das lojas de Cajazeiras – PB
Authors: Farias Davi Moreira de , Oliveira Mayara Muniz de
Published: September 2019

Com o crescente número de usuários no meio digital e em decorrência das mudanças constantes nesse tipo de ambiente, o público está se conectando em busca de entretenimento e informações, mas em meio a eles, as empresas também querem se adequar aos usuários e estar presente neste espaço. Pensando como é a forma que essas empresas agem na web quando vão atingir o seu público com os conteúdos online, levantou-se o objetivo desta pesquisa, que foi identificar como as ferramentas do Marketing Digital contribuem na divulgação da imagem destas lojas da cidade de Cajazeiras – PB. Para isso, buscamos compreender como esses comércios realizam suas divulgações na internet para atingir seu determinado público, tentando também identificar quais as ferramentas do Marketing Digital que as empresas têm mais resultado, e que tipos de benefícios esta ação do Marketing pode trazer para a empresa. Para isso, foi realizada pesquisas em livros, artigos e internet sobre o tema abordado, para entender a temática em estudo e uma pesquisa empírica nas lojas do comércio da cidade. Os resultados indicam que dos recursos utilizados pelas empresas, muitas fazem o uso do Marketing Digital sem terem um bom conhecimento, elas conseguem ter resultados com a ação mesmo ainda sendo pouco, pois muitas necessitam de um profissional que seja contratado para auxiliar em diversos favores dentro empresa.
Optimizing Face To Face Interactions In English Classroom Blended Learning Of Higher Education Level
Authors: Tantri Niki Raga
Published: September 2019

This article discussed Blended Learning after the flourished utilization of Learning Management System (LMS) in English classrooms.  LMS is found to be one of the efficient digital tools in delivering the content learning, especially English subject. Almost all language skills can be exploited by LMS. It provides English learning both synchronous and asynchronous modes; which meet the purpose of personalized learning. However, there still could be found that LMS has been mistakenly used and created blended learning becomes inefficient learning strategy in the classroom, mostly in face to face meetings. To tackle the problems, this paper attempts to propose the concept of face to face interactions in blended learning classroom. It will be seen from LMS’s ability in the classroom, characteristics of Generation Z students, and the demand of 21st century skills for future workforce.
The Phonetics System in Buginese Language
Authors: Talaohu Ahmad Rifani
Published: September 2019

Buginese language or Bahasa Bugis is the language of people who inhabited in the Celebes (Sulawesi) island, eastern part of Indonesia, which is exactly in South Sulawesi province. Buginese has affiliation with Austronesian language family that spreads into the several parts of the province, such as Bone, Pinrang, Soppeng, Parepare, Sidrap, Barru, Sinjai and Sengkang. Buginese has roughly 3.6 million native speakers which is the largest among any other three ethnic groups in South Sulawesi; Makassar, Mandar, and Toraja. This paper aims to examine the phonetics system of this largest active language in South Sulawesi. Simply put, this article will identify the consonants and vowels which exist in Buginese language and analyse the occurrence of those consonants and vowels.
Drug Carriers With Star Polymer Structures
Authors: KOTRCHOVÁ L. , KOSTKA L. , ETRYCH T.
Published: September 2019

In this review we summarize several synthetic approaches to the advanced synthesis of star-like polymer-based drug carriers. Moreover, their application as nanomedicines for therapy or the diagnosis of neoplastic diseases and their biodistribution are reviewed in detail. From a broad spectrum of star-like systems, we focus only on fully water-soluble systems, mainly based on poly(ethylene glycol) or N-(2-hydroxypropyl)methacrylamide polymer and copolymer arms and polyamidoamine dendrimers serving as the core of the star-like systems.
Synthesis of Water-Soluble Star Polymers Based on Cyclodextrins
Authors: KOTRCHOVÁ L. , ETRYCH T.
Published: September 2019

Novel star polymers based on the water-soluble N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer and cyclodextrin were synthesized and the physico-chemical behavior of these precursors was studied. Semitelechelic HPMA copolymers were grafted onto the cyclodextrin core, thus forming star-like structure. Both prepared systems were designed as possible polymer carriers for the controlled release of cytostatic drugs, which after the drug release and degradation will be eliminated from the organism. Two synthesis approaches were used to obtain similar polymer carriers with different degradation rates. All the polymers were prepared by reversible addition-fragmentation chain-transfer polymerization, which guarantees low dispersity of the prepared systems.
The Principle of Good Faith in Contractual Performance: A Scottish-Canadian Comparison
Authors: MacQueen Hector , O'Byrne Shannon
Published: September 2019

In 2014 the Supreme Court of Canada in Bhasin v Hrynew formally but cautiously acknowledged good faith as a general organising principle of contractual performance at common law and that the principle largely manifests by way of implied terms and through the new duty of honesty. Rejecting English recalcitrance on the subject, the SCC concluded that recognising a good faith principle makes the common law less unsettled and piecemeal, more coherent and just. The article suggests that the limitations placed on the good faith principle by the SCC make its potential adoption in Scotland offer more opportunity than risk, especially in relation to the exercise of contractual discretions and contractual remedies.
Design and Analysis of a Clutched Parallel Elastic Actuator
Authors: Penzlin Bernhard , Enes Fincan Mustafa , Li Yinbo , Ji Linhong , Leonhardt Steffen , Ngo Chuong
Published: September 2019

Various actuator topologies are discussed for the purpose of powering periodic processes and particularly walking robots. The Clutched Parallel Elastic Actuator (CPEA) is proposed to reduce the energy consumption of active exoskeletons. A nonlinear model of the CPEA is presented in addition to the mechanical design. The CPEA prototype is operated with a passive load on the walking trajectory of the hip joint. The actuator is controlled with a cascaded position control and a superimposed Iterative Learning Controller (ILC). The controller was chosen to ensure comparability between active and deactivated spring operation. The application of the CPEA has the potential to increase efficiency in the design of exoskeletons.
An Update on the Impact of Climate Change in Viticulture and Potential Adaptations
Authors: van Leeuwen Cornelis , Destrac-Irvine Agnès , Dubernet Matthieu , Duchêne Eric , Gowdy Mark , Marguerit Elisa , Pieri Philippe , Parker Amber , de Rességuier Laure , Ollat Nathalie
Published: September 2019

Climate change will impose increasingly warm and dry conditions on vineyards. Wine quality and yield are strongly influenced by climatic conditions and depend on complex interactions between temperatures, water availability, plant material, and viticultural techniques. In established winegrowing regions, growers have optimized yield and quality by choosing plant material and viticultural techniques according to local climatic conditions, but as the climate changes, these will need to be adjusted. Adaptations to higher temperatures include changing plant material (e.g., rootstocks, cultivars and clones) and modifying viticultural techniques (e.g., changing trunk height, leaf area to fruit weight ratio, timing of pruning) such that harvest dates are maintained in the optimal period at the end of September or early October in the Northern Hemisphere. Vineyards can be made more resilient to drought by planting drought resistant plant material, modifying training systems (e.g., goblet bush vines, or trellised vineyards at wider row spacing), or selecting soils with greater soil water holding capacity. While most vineyards in Europe are currently dry-farmed, irrigation may also be an option to grow sustainable yields under increasingly dry conditions but consideration must be given to associated impacts on water resources and the environment.
Tobramycin Promotes Melanogenesis by Upregulating p38 MAPK Protein Phosphorylation in B16F10 Melanoma Cells
Authors: Moon Seung-Hyun , Chung You Chul , Hyun Chang-Gu
Published: September 2019

Tobramycin is an aminoglycoside-based natural antibiotic derived from Streptomyces tenebrarius, which is primarily used for Gram-negative bacterial infection treatment. Although tobramycin has been utilized in clinical practice for a long time, it has exhibited several side effects, leading to the introduction of more effective antibiotics. Therefore, we conducted our experiments focusing on new possibilities for the clinical use of tobramycin. How tobramycin affects skin melanin formation is unknown. This study used B16F10 melanoma cells to assess the effect of tobramycin on melanin production. After cytotoxicity was assessed by MTT assay, melanin content and tyrosinase activity analyses revealed that tobramycin induces melanin synthesis in B16F10 cells. Next, Western blot analyses were performed to elucidate the mechanism by which tobramycin increases melanin production; phosphorylated p38 protein expression was upregulated. Protein inhibitors have been used to elucidate the mechanism of tobramycin. Kanamycin A and B are structurally similar to tobramycin, and 2-DOS represents the central structure of these antibiotics. The effects of these substances on melanogenesis were evaluated. Kanamycin A reduced melanin production, whereas kanamycin B and 2-DOS had no effect. Overall, our data indicated that tobramycin increases melanin production by promoting p38 protein phosphorylation in B16F10 melanoma cells.
SI ‘Multiscale Fatigue Design’
Authors: Berto Filippo
Published: September 2019

Prevention of unexpected failures is a fundamental design objective in any engineering structure or system subjected to fatigue [...]
Artificial Intelligence and Music: Open Questions of Copyright Law and Engineering Praxis
Authors: Sturm Bob L. T. , Iglesias Maria , Ben-Tal Oded , Miron Marius , Gómez Emilia
Published: September 2019

The application of artificial intelligence (AI) to music stretches back many decades, and presents numerous unique opportunities for a variety of uses, such as the recommendation of recorded music from massive commercial archives, or the (semi-)automated creation of music. Due to unparalleled access to music data and effective learning algorithms running on high-powered computational hardware, AI is now producing surprising outcomes in a domain fully entrenched in human creativity—not to mention a revenue source around the globe. These developments call for a close inspection of what is occurring, and consideration of how it is changing and can change our relationship with music for better and for worse. This article looks at AI applied to music from two perspectives: copyright law and engineering praxis. It grounds its discussion in the development and use of a specific application of AI in music creation, which raises further and unanticipated questions. Most of the questions collected in this article are open as their answers are not yet clear at this time, but they are nonetheless important to consider as AI technologies develop and are applied more widely to music, not to mention other domains centred on human creativity.
Spatial Profile of Neutral Temperature Measurement in Aditya-U Tokamak Plasmas
Authors: Yadava Nandini , Ghosh Joydeep , Chowdhuri Malay Bikas , Manchanda Ranjana , Punchithaya K Sripathi , Dey Ritu , Jadeja Kumarpalsinh A. , Tanna Rakesh L. , Tripathi Deepti ,   Aditya-U Team
Published: September 2019

The spatial profile of neutral hydrogen temperatures in Aditya-U tokamak plasma has been estimated from the spatial profile of the Hα spectral emissions measured using a high-resolution multi-track spectrometer, having a spectral resolution of 0.023 nm at a 50 μm entrance slit width. The neutral temperature estimation from the Doppler broadened spectral line was carried out after considering the Zeeman effect due to the magnetic field present in the tokamak. To accurately obtain the temperature of the neutral hydrogen, two temperature components (warm and hot) were required to be considered. A code was developed to obtain the neutral temperature and is used to analyze two typical plasma discharges. The temperature of warm components varies between 3 and 5 eV, while hot atoms have temperatures in the range of 15–30 eV. It was observed that the chord-integrated neutral temperature increases slightly towards the plasma core region compared to the plasma edge of Aditya-U tokamak.
Maneuvering Performance in the Colonial Siphonophore, Nanomia bijuga
Authors: Sutherland Kelly R. , Gemmell Brad J. , Colin Sean P. , Costello John H.
Published: September 2019

The colonial cnidarian, Nanomia bijuga, is highly proficient at moving in three-dimensional space through forward swimming, reverse swimming and turning. We used high speed videography, particle tracking, and particle image velocimetry (PIV) with frame rates up to 6400 s−1 to study the kinematics and fluid mechanics of N. bijuga during turning and reversing. N. bijuga achieved turns with high maneuverability (mean length–specific turning radius, R/L = 0.15 ± 0.10) and agility (mean angular velocity, ω = 104 ± 41 deg. s−1). The maximum angular velocity of N. bijuga, 215 deg. s−1, exceeded that of many vertebrates with more complex body forms and neurocircuitry. Through the combination of rapid nectophore contraction and velum modulation, N. bijuga generated high speed, narrow jets (maximum = 1063 ± 176 mm s−1; 295 nectophore lengths s−1) and thrust vectoring, which enabled high speed reverse swimming (maximum = 134 ± 28 mm s−1; 37 nectophore lengths s−1) that matched previously reported forward swimming speeds. A 1:1 ratio of forward to reverse swimming speed has not been recorded in other swimming organisms. Taken together, the colonial architecture, simple neurocircuitry, and tightly controlled pulsed jets by N. bijuga allow for a diverse repertoire of movements. Considering the further advantages of scalability and redundancy in colonies, N. bijuga is a model system for informing underwater propulsion and navigation of complex environments.
Polycondensation of Hexamethylenetetramine in Anhydrous Acid Media as a New Approach to Carbyne-Like Materials and Its Application as Dispersant of Carbon Materials
Authors: Gerasimova Alyona V. , Alekhina Olga V. , García-Cruz Leticia , Iniesta Jesús , Melezhik Alexander V. , Tkachev Aleksey G.
Published: September 2019

Aminocumulene (AC), a technical name that results from the hexamethylenetetramine polycondensation in anhydrous sulfuric acid, was successfully performed toward the synthesis of oligomeric cumulenic compounds made up of carbyne-like (=C=C)x fragments as a main moiety together with amino endcapping groups. The tentative mechanism for the synthesis of the soluble and insoluble AC likely included the participation of carbene species as an intermediate. Spectral properties obtained from UV-Vis, infrared, and Raman spectroscopies, and surface chemistry analysis through X-ray photoelectron spectroscopy of the soluble AC confirmed the presence of a mixture of linear and branched aminocumulene-based oligomers. AC displayed high performance as a dispersant and stabilizer agent of both multi-walled carbon nanotubes and graphene in aqueous solutions after powerful insonation treatment under controlled temperature compared to the most commonly used dispersant agents. Thereby, AC is vitally important for the preparation of carbonaceous materials based on nanoinks in a wide variety of fields.
Regulation of Rho GTPases by RhoGDIs in Human Cancers
Authors: Cho Hee Jun , Kim Jong-Tae , Baek Kyoung Eun , Kim Bo-Yeon , Lee Hee Gu
Published: September 2019

Rho GDP dissociation inhibitors (RhoGDIs) play important roles in various cellular processes, including cell migration, adhesion, and proliferation, by regulating the functions of the Rho GTPase family. Dissociation of Rho GTPases from RhoGDIs is necessary for their spatiotemporal activation and is dynamically regulated by several mechanisms, such as phosphorylation, sumoylation, and protein interaction. The expression of RhoGDIs has changed in many human cancers and become associated with the malignant phenotype, including migration, invasion, metastasis, and resistance to anticancer agents. Here, we review how RhoGDIs control the function of Rho GTPases by regulating their spatiotemporal activity and describe the regulatory mechanisms of the dissociation of Rho GTPases from RhoGDIs. We also discuss the role of RhoGDIs in cancer progression and their potential uses for therapeutic intervention.
Key Management Systems at the Cloud Scale
Authors: Campagna Matthew , Gueron Shay
Published: September 2019

This paper describes a cloud-scale encryption system. It discusses the constraints that shaped the design of Amazon Web Services’ Key Management Service, and in particular, the challenges that arise from using a standard mode of operation such as AES-GCM while safely supporting huge amounts of encrypted data that is (simultaneously) generated and consumed by a huge number of users employing different keys. We describe a new derived-key mode that is designed for this multi-user-multi-key scenario typical at the cloud scale. Analyzing the resulting security bounds of this model illustrates its applicability for our setting. This mode is already deployed as the default mode of operation for the AWS key management service.
Consequences of Model Misspecification for Maximum Likelihood Estimation with Missing Data
Authors: Golden Richard M. , Henley Steven S. , White Halbert , Kashner T. Michael
Published: September 2019

Researchers are often faced with the challenge of developing statistical models with incomplete data. Exacerbating this situation is the possibility that either the researcher’s complete-data model or the model of the missing-data mechanism is misspecified. In this article, we create a formal theoretical framework for developing statistical models and detecting model misspecification in the presence of incomplete data where maximum likelihood estimates are obtained by maximizing the observable-data likelihood function when the missing-data mechanism is assumed ignorable. First, we provide sufficient regularity conditions on the researcher’s complete-data model to characterize the asymptotic behavior of maximum likelihood estimates in the simultaneous presence of both missing data and model misspecification. These results are then used to derive robust hypothesis testing methods for possibly misspecified models in the presence of Missing at Random (MAR) or Missing Not at Random (MNAR) missing data. Second, we introduce a method for the detection of model misspecification in missing data problems using recently developed Generalized Information Matrix Tests (GIMT). Third, we identify regularity conditions for the Missing Information Principle (MIP) to hold in the presence of model misspecification so as to provide useful computational covariance matrix estimation formulas. Fourth, we provide regularity conditions that ensure the observable-data expected negative log-likelihood function is convex in the presence of partially observable data when the amount of missingness is sufficiently small and the complete-data likelihood is convex. Fifth, we show that when the researcher has correctly specified a complete-data model with a convex negative likelihood function and an ignorable missing-data mechanism, then its strict local minimizer is the true parameter value for the complete-data model when the amount of missingness is sufficiently small. Our results thus provide new robust estimation, inference, and specification analysis methods for developing statistical models with incomplete data.
A Novel Experimental Investigation of Cement Mechanical Properties with Application to Geothermal Wells
Authors: Teodoriu Catalin , Yi Mi Chin , Salehi Saeed
Published: September 2019

Geothermal well integrity has proven to be of high importance, especially because the geothermal life span is expected to be longer than that of conventional oil and gas wells. Recent studies have demonstrated that cement-casing interfacial bonding is a classical well failure in such wells, but field measurements do not correlate with the simulations. We believe that this discrepancy is due to limitations of the simulation itself, which in most cases assumes a free movement of the casing after the interfacial bonding has been exceeded. Since the casing is cemented using a complex hardware package such as centralizer and other cementing components, the free movement of the casing is only possible when no-cement exists behind the casing. This paper proposes a novel experimental method to understand cement strength properties other than the standardized unconfined cement strength (UCS). The novel setup allows the measurement of interfacial bonding strength between cement and casing and the pure cement shear strength. The later becomes an important parameter as the interaction between casing couplings and cement will show. In the past, standard cement bending tests were designed to measure cement shear, but the value obtained from such tests is not relevant for the geothermal in situ casing-cement interaction, and thus the need for a new testing method arose. The new method is capable to mimic the interaction between the casing connection edges and the cement. We believe that the results presented within this paper will help engineers to validate their numerical simulations and to optimize the geothermal well design which will result in the increase of the well integrity for the life of the geothermal well.
Spatial Positioning and Operating Parameters of a Rotary Bell Sprayer: 3D Mapping of Droplet Size Distributions
Authors: Darwish Ahmad Adnan , Singh Binit B. , Doerre Mark , Abubaker Ahmad M. , Arabghahestani Masoud , Salaimeh Ahmad A. , Akafuah Nelson K.
Published: September 2019

In this study, we evaluated the fundamental physical behavior during droplet formation and flow from a rotary bell spray in the absence of an electrostatic field. The impact of a wide range of operating parameters of the rotary bell sprayer, such as flow rates, rotational speeds, and spatial positioning, on droplet sizes and size distributions using a three-dimensional (3-D) mapping was studied. The results showed that increasing the rotational speed caused the Sauter mean diameter of the droplets to decrease while increasing flow rate increased the droplet sizes. The rotational speed effect, however, was dominant compared to the effect of flow rate. An increase in droplet size radially away from the cup was noted in the vicinity of the cup, nevertheless, as the lateral distances from the cup and rotational speed were increased, the droplet sizes within the flow field became more uniform. This result is of importance for painting industries, which are looking for optimal target distances for uniform painting appearance. Furthermore, the theoretical formulation was validated with experimental data, which provides a wider range of applicability in terms of environment and parameters that could be tested. This work also provides an abundance of measurements, which can serve as a database for the validation of future droplet disintegration simulations.
Focal Recurrent Copy Number Alterations Characterize Disease Relapse in High Grade Serous Ovarian Cancer Patients with Good Clinical Prognosis: A Pilot Study
Authors: Dugo Matteo , Devecchi Andrea , De Cecco Loris , Cecchin Erika , Mezzanzanica Delia , Sensi Marialuisa , Bagnoli Marina
Published: September 2019

High grade serous ovarian cancer (HGSOC) retains high molecular heterogeneity and genomic instability, which currently limit the treatment opportunities. HGSOC patients receiving complete cytoreduction (R0) at primary surgery and platinum-based therapy may unevenly experience early disease relapse, in spite of their clinically favorable prognosis. To identify distinctive traits of the genomic landscape guiding tumor progression, we focused on the R0 patients of The Cancer Genome Atlas (TCGA) ovarian serous cystadenocarcinoma (TCGA-OV) dataset and classified them according to their time to relapse (TTR) from surgery. We included in the study two groups of R0-TCGA patients experiencing substantially different outcome: Resistant (R; TTR ≤ 12 months; n = 11) and frankly Sensitive (fS; TTR ≥ 24 months; n = 16). We performed an integrated clinical, RNA-Sequencing, exome and somatic copy number alteration (sCNA) data analysis. No significant differences in mutational landscape were detected, although the lack of BRCA-related mutational signature characterized the R group. Focal sCNA analysis showed a higher frequency of amplification in R group and deletions in fS group respectively, involving cytobands not commonly detected by recurrent sCNA analysis. Functional analysis of focal sCNA with a concordantly altered gene expression identified in R group a gain in Notch, and interferon signaling and fatty acid metabolism. We are aware of the constraints related to the low number of OC cases analyzed. It is worth noting, however, that the sCNA identified in this exploratory analysis and characterizing Pt-resistance are novel, deserving validation in a wider cohort of patients achieving complete surgical debulking.