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Dssc Performance of Zinc - Tin - Vanadium Oxide Nanocomposite Using Beetroot (Beta Vulgaris) as Dye Sensitizer 甜菜根(Beta Vulgaris)染料敏化剂对锌-锡-氧化钒纳米复合材料Dssc性能的影响
Q4 Materials Science Pub Date : 2021-02-05 DOI: 10.21203/RS.3.RS-430495/V1
K. Uthayarani, C. M, R. Vasanthapriya, N. Neelakandeswari, E. Girija
In this present work, zinc - tin - vanadium oxide (ZTVO) nanocomposite was prepared using hydrothermal route and was subjected to calcination at 600 0 C. The sample was systematically characterized by Powder X-ray Diffractometer (XRD), Attenuated Total Reflectance (ATR), Field Emission Scanning electron Microscope (FE-SEM), Transmission Electron Microscope (TEM) and Ultraviolet- Diffuse Reflectance Spectroscopic techniques. From the investigations, it is observed that this composite possess the combination of both individual and binary phases. The elongated nanostructures obtained due to the binary phases and spherical shaped nanostructures obtained due to the individual phase were observed from the FE-SEM image. The formation of the nanocomposite has further been confirmed from TEM and HRTEM images. ZTVO nanocomposite possess large surface area of 167.3 m2/g and pore size value around 11 nm. Also, the band gap of the material has been found to be 1.97 eV. Dye-sensitized solar cell (DSSC) has been fabricated using this ZTVO nanocomposite as the photoanode and betalain dye extracted from beetroot (Beta vulgaris) as the natural dye. This simple protocol was formulated at a low cost for the first time for DSSC fabrication and it has attained the efficiency of 3.41%. This better efficiency of ZTVO might be due to larger surface area, presence of pores in addition to smaller band gap.
本工作采用水热法制备了锌-锡-钒氧化物(ZTVO)纳米复合材料,并在600℃下煅烧。通过粉末X射线衍射仪(XRD)、衰减全反射仪(ATR)、场发射扫描电子显微镜(FE-SEM)对样品进行了系统表征,透射电子显微镜(TEM)和紫外漫反射光谱技术。从研究中可以观察到,这种复合物同时具有单个相和二元相的组合。从FE-SEM图像中观察到由二元相获得的细长纳米结构和由单个相获得的球形纳米结构。TEM和HRTEM图像进一步证实了纳米复合材料的形成。ZTVO纳米复合材料具有167.3m2/g的大表面积和11nm左右的孔径值。此外,已发现该材料的带隙为1.97eV。使用这种ZTVO纳米复合材料作为光阳极,并使用从甜菜根(Beta vulgaris)中提取的甜菜碱染料作为天然染料,制备了染料敏化太阳能电池(DSSC)。这种简单的方案首次以低成本制定用于DSSC制造,其效率达到3.41%。ZTVO的这种更好的效率可能是由于更大的表面积、除了更小的带隙之外还存在孔隙。
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引用次数: 1
On the Problem of Operation of Self-Propelled Drilling Rigs in the Harsh Winter Conditions of the Far North 关于自行式钻机在极北严寒冬季作业问题的探讨
Q4 Materials Science Pub Date : 2020-12-01 DOI: 10.35940/ijeat.b3547.129219
D. Tatarinov, N. Timofeev, R. M. Skryabin
In the North-East and Arctic regions of the Russian Federation, self-propelled drilling rigs ofvarious modifications are in high demand for drilling of various purpose wells duringexploration and engineering works. Due to the geographical inaccessibility of the productionsites during the warm season, the bulk of drilling work is carried out in winter.The drilling fleet of exploration companies is becoming obsolete due to the lack of stableproduction of new generation drilling equipment by domestic plants, so now the process ofpurchasing imported equipment with higher technological capabilities, but not enough adaptedto work in the harsh climatic conditions of the cryolithic zones of the northern and arcticregions, has begun. Besides, the enthusiasm for imported equipment, as we know, leads toconstant dependence on foreign companies - suppliers of spare parts, technological means andmaterials and providing maintenance of drilling rigs.
在俄罗斯联邦的东北部和北极地区,在勘探和工程施工中,对各种改装的自行式钻机的需求很大。由于生产地点在温暖季节的地理位置难以到达,大部分钻井工作都在冬季进行。由于国内工厂缺乏新一代钻井设备的稳定生产,勘探公司的钻井船队正在过时,因此现在已经开始购买技术能力更高但不适应北方和北极地区冰石器带恶劣气候条件的进口设备。此外,正如我们所知,对进口设备的热情导致了对外国公司的持续依赖——备件、技术手段和材料的供应商以及提供钻机的维护。
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引用次数: 0
Design and analysis of alcohol gas sensors using nano particles for micro heaters 微型加热器用纳米颗粒酒精气体传感器的设计与分析
Q4 Materials Science Pub Date : 2020-10-17 DOI: 10.31838/ijpr/2020.sp2.116
D. Kumar, P. Pardhasaradhi, N. Siddaiah, P. Prasad
This research describes simulation of MEMS-based Alcohol Gas Sensor study of nanoparticles coated with various parameters such as power consumption, temperature uniformity, change in resistance, sensitivity and selectivity. This is done by calculating the resistance changes as gas is spread over the sensing layer. This instant response in gas detection helps in various applications such as vehicle breath analyser, breath analyzer, food quality control, etc. The gas sensor uses a micro-hotplate structure made of poly silicone mesh. The sensor holds a very thin conductive titanium film which detects the existence of vapors of ethyl alcohol on it. The temperature produced by the hot-plate influences different factors, such as the film's conductance and the amount of a particular gas adsorbed thereon. When the sensor film is brought to the right boiling point temperature, the residual vapor particles evaporate. We configure the supply voltage (around 3 volts) and evaluate the microheater's uniform temperature profile (619.29 K) along with sensitivity and selectivity for efficient sensing of alcohol gas. For the analysis of gas sensing, we have to equate the sensitivity of ZnO, TiO2 and SnO thin film coating. The concept was implemented using heating joules, thermal expansion and FEM simulation with electric current.
本研究描述了基于MEMS的酒精气体传感器的模拟研究,研究了涂覆有各种参数的纳米颗粒,如功耗、温度均匀性、电阻变化、灵敏度和选择性。这是通过计算气体在传感层上扩散时的电阻变化来实现的。这种气体检测的即时响应有助于各种应用,如车辆呼吸分析仪、呼吸分析仪、食品质量控制等。气体传感器使用由多晶硅网制成的微热板结构。该传感器有一层非常薄的导电钛膜,可以检测其上是否存在乙醇蒸汽。热板产生的温度会影响不同的因素,如膜的导电性和吸附在膜上的特定气体的量。当传感器膜达到合适的沸点温度时,残留的蒸汽颗粒蒸发。我们配置了电源电压(约3伏),并评估了微加热器的均匀温度分布(619.29 K)以及有效感测酒精气体的灵敏度和选择性。对于气敏分析,我们必须将ZnO、TiO2和SnO薄膜涂层的灵敏度等同起来。该概念是通过加热焦耳、热膨胀和电流有限元模拟来实现的。
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引用次数: 0
Exploring The Lived Experiences Of Young Arnisadors: The Curricular and Co-Curricular Challenges 探索青年剑士的生活经验:课程与课外挑战
Q4 Materials Science Pub Date : 2020-10-01 DOI: 10.35877/jsst.v63.i2s.4114
Domenic T. Sanchez, Larry B. Peconcillo, Rumuela L. Wong, Rennelie C. Panzo, Maria Christina A. Flores, Ofelia A. Labrado, Julie Anne T. Godinez
Arnis has been identified as a combative, full-contact sport in the context of the school's co-curricular activities, in which students may have acquired meaningful learning, skills, and physical well-being. This qualitative study explores the experiences of arnis players or arnisadors in their curricular and co-curricular pursuits; has utilized non-probability purposive sampling; and employed Colaizzi's seven-step phenomenological method as a reference in interpreting and formulating relevant themes that reflect the curricular and co-curricular experiences of the participants. Data collection was carried out employing interviews and observation methods. Relative themes that emerged from this study were commitment, milestones, physical development, self-discipline, realization, pride and passion, training, competition, camaraderie, support, and aspiration. Curiosity and peer influence were the main factors that led participants to join the arnis team, and the rigors of the training changed their perspective towards the fulfillment of curricular and co-curricular objectives. Significant benefits from joining Arnis have been highlighted, such as sound health, asthma healing, physical and character development, and other positive attributes have been enhanced. Their aspiration as senior practitioners would be to share the kind of discipline, advancement, and expertise they have achieved with the beginners to express gratitude to the team. Furthermore, it was revealed that the ideal peer influence would lead to something beneficial, such as an affiliation to a sport like Arnis. At the same time, the loco parentis is essential for the role modeling to student-athletes who have been successful in managing difficulties due to genuine friendship and love. And the support of teammates, coaches, family, and school.
在学校的课外活动中,Arnis被认为是一项好斗、全面接触的运动,在这些活动中,学生可能获得了有意义的学习、技能和身体健康。这项定性研究探讨了arnis玩家或arnisador在课程和课外活动中的经历;采用了非概率目的抽样;并借鉴了Colaizzi的七步现象学方法来解释和制定反映参与者课程和课外经历的相关主题。数据收集采用访谈和观察方法。这项研究中出现的相关主题是承诺、里程碑、身体发展、自律、实现、自豪感和激情、训练、竞争、友情、支持和抱负。好奇心和同伴影响是导致参与者加入arnis团队的主要因素,而严格的培训改变了他们对实现课程和课外目标的看法。加入Arnis的显著好处得到了强调,如健康、哮喘治疗、身体和性格发展,以及其他积极属性得到了增强。作为资深从业者,他们的愿望是与初学者分享他们所获得的纪律、进步和专业知识,以表达对团队的感激之情。此外,研究表明,理想的同伴影响会带来一些有益的东西,比如加入像阿尼斯这样的运动。同时,对于那些因真诚的友谊和爱而成功应对困难的学生运动员来说,替代父母的角色塑造至关重要。以及队友、教练、家人和学校的支持。
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引用次数: 1
Containerized Okra (Ladies' Fingers, Abelmoschus Esculentus): Organic Fertilizers Result For Growth 集装箱秋葵(女士的手指,Abelmoschus Esculentus):有机肥料的生长结果
Q4 Materials Science Pub Date : 2020-10-01 DOI: 10.35877/jsst.v63.i4.2369
Domenic T. Sanchez
Staying at home during the quarantine could be an excellent opportunity for home gardening. The study highlights the growth of Okra, one of the most common, easy-to-grow, and nutritious vegetables for home-grown container gardening. Chicken manure, vermicompost, and liquid bio-inoculants (FAA, FFJ, and CalPhos) were the organic fertilizers used to distinguish the growth effect on containerized Okra labeled as Groups A, B, and C and observed for eight (8) weeks. The result has confirmed that the growing effect of chicken manure as a basal fertilizer on Group A was satisfactory. Interestingly, the effect of vermicompost as basal fertilizer in Group B was unsatisfactory, whereas the effect of liquid bio-inoculant as basal and foliar fertilizer was very satisfactory. Containerized plants rely mainly on growers for irrigation and fertilization due to the restricted movement of the root system. Home container gardening has been strongly encouraged in urban areas, as harvesting is within reach of family use. The report addresses much of growing containerized Okra in home gardening. The scope of the study is limited only to the observation of growth rates of Okra plants during the vegetative phase. Future research efforts may be undertaken to identify a different outcome of such organic fertilizers in the form of foliar fertilizer. Due to its superior effect on containerized Okra plants, the use of liquid bio-inoculants as basal and foliar fertilizers for home gardening is recommended.
隔离期间呆在家里可能是家庭园艺的绝佳机会。该研究强调了秋葵的生长,秋葵是家庭种植容器园艺中最常见、最容易种植且营养丰富的蔬菜之一。鸡粪、蚯蚓堆肥和液体生物接种剂(FAA、FFJ和CalPhos)作为有机肥料,用于区分容器秋葵的生长效果,标记为A、B和C组,观察8周。结果表明,鸡粪作为基肥在a组上的生长效果是满意的。有趣的是,在B组中,蚯蚓堆肥作为基肥的效果不理想,而液体生物接种剂作为基肥和叶面肥的效果非常满意。由于根系移动受限,集装箱植物主要依靠种植者进行灌溉和施肥。家庭容器园艺在城市地区得到大力鼓励,因为收获是在家庭使用的范围内。该报告讨论了在家庭园艺中种植集装箱秋葵的问题。本研究的范围仅限于观察秋葵植物在营养期的生长速度。未来的研究工作可能会以叶面肥的形式确定这种有机肥料的不同结果。由于液体生物接种剂对集装箱秋葵植物的效果优越,建议使用液体生物接种剂作为家庭园艺的基面和叶面肥料。
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引用次数: 0
A Novel Granularity Optimal Feature Selection based on Multi-Variant Clustering for High Dimensional Data 基于多变量聚类的高维数据粒度最优特征选择
Q4 Materials Science Pub Date : 2020-04-30 DOI: 10.17762/TURCOMAT.V12I3.2031
SRINIVAS KOLLI, M. Sreedevi
Clustering is the most complex in multi/high dimensional data because of sub feature selection fromoverall features present in categorical data sources. Sub set feature be the aggressive approach to decreasefeature dimensionality in mining of data, identification of patterns. Main aim behind selection of feature withrespect to selection of optimal feature and decrease the redundancy. In-order to compute withredundant/irrelevant features in high dimensional sample data exploration based on feature selection calculationwith data granular described in this document. Propose aNovel Granular Feature Multi-variant Clustering basedGenetic Algorithm (NGFMCGA) model to evaluate the performance results in this implementation. This modelmain consists two phases, in first phase, based on theoretic graph grouping procedure divide features intodifferent clusters, in second phase, select strongly representative related feature from each cluster with respectto matching of subset of features. Features present in this concept are independent because of features selectfrom different clusters, proposed approach clustering have high probability in processing and increasing thequality of independent and useful features.Optimal subset feature selection improves accuracy of clustering andfeature classification, performance of proposed approach describes better accuracy with respect to optimalsubset selection is applied on publicly related data sets and it is compared with traditional supervisedevolutionary approaches.
聚类在多维/高维数据中是最复杂的,因为从分类数据源中存在的总体特征中选择子特征。子集特征是数据挖掘、模式识别中降低特征维数的有效方法。特征选择的主要目的是选择最优特征,减少冗余。为了在高维样本数据探索中进行冗余/不相关特征的计算,本文介绍了基于数据粒度的特征选择计算。提出了一种新的基于颗粒特征多变量聚类的遗传算法(NGFMCGA)模型来评估该实现中的性能结果。该模型主要分为两个阶段,第一阶段,根据理论图分组过程将特征划分到不同的聚类中,第二阶段,根据特征子集的匹配,从每个聚类中选择具有较强代表性的相关特征。该概念中存在的特征是独立的,因为特征是从不同的聚类中选择的,所提出的聚类方法在处理和提高独立有用特征的质量方面具有很高的概率。最优子集特征选择提高了聚类和特征分类的准确性,将最优子集选择应用于公开相关数据集,并与传统的监督进化方法进行了比较。
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引用次数: 7
MIXED COMPLEX COMPOUNDS OF PALMITATE, OLEATE CALCIUMWITH ACETAMIDE, NICOTINAMIDE AND THIOCARBAMIDE 棕榈酸、油酸钙与乙酰胺、烟酰胺和硫代酰胺的混合配合物
Q4 Materials Science Pub Date : 2020-04-30 DOI: 10.51348/fzea2020
А. I. Тursunoy, A. A. Tokhir, R. I. Мavluda
The mixed coordination compounds of palmitate and calcium oleate were synthesized. Thecomposition, individuality, thermal behavior, methods of coordinating the palmitate and oleate fragments,acetamide, nicotinamide and thiocarbamide molecules have been established. Comparison of the diffractionpatterns of calcium palmitate and oleate, free ligand molecules and synthesized compounds showed themismatch of the diffractograms, and this proves that the synthesized complexes have an individual crystallattice different from the starting materials. The method of coordination of amide molecules, theenvironment of the central ion, is proved by IR spectroscopy. Acetamide molecules are coordinated with thecentral atom through an oxygen atom, thiocarbamide and nicotinamide molecules are coordinated throughsulfur and nitrogen atoms, respectively, palmitate and oleate fragments coordinate bidentantly.
合成了棕榈酸酯和油酸钙的混合配位化合物。建立了棕榈酸酯和油酸酯片段、乙酰胺、烟酰胺和硫代氨基酰胺分子的组成、个性、热行为、配位方法。对比了棕榈酸钙和油酸钙、游离配体分子和合成物的衍射图,发现了衍射图的不匹配,证明了合成物具有不同于原料的单个晶体。用红外光谱法证明了酰胺分子的配位方法,即中心离子的环境。乙酰胺分子通过一个氧原子与中心原子配位,硫代氨基酰胺和烟酰胺分子分别通过硫原子和氮原子配位,棕榈酸酯和油酸酯片段斜对配位。
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引用次数: 0
Single phase five-level inverter topology with reduced number of switches for PV application 用于光伏应用的开关数量减少的单相五电平逆变器拓扑
Q4 Materials Science Pub Date : 2020-03-31 DOI: 10.1016/J.MATPR.2020.11.598
K. Selvakumar, K. Vijayakumar, R. Palanisamy, D. Selvabharathi
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引用次数: 1
An Efficient Comparison Analysis of Scheduling Algorithms with a base of Genetic algorithm to Optimization technique of Ant colony and Artificial Bee colony 基于遗传算法的调度算法与蚁群和人工蜂群优化技术的高效比较分析
Q4 Materials Science Pub Date : 2020-02-29 DOI: 10.37896/jxu14.4/120
K. Malathi, K. Priyadarsini
Day by Day so many Task scheduling algorithms are booming in the Cloud computing field. However they are having their own limitations. Now we are in the state to analyze all the algorithms and find out the better one for our efficient output. We know that Genetic Algorithm is one of the powerful metaheuristic Algorithms in task scheduling. But due to the random selection of parameters the process quality is not high. So we go for the combination of two or more optimization Algorithms counts on less execution time, maximum throughput, less makespan, full resource utilization, better quality of service, maximum energy consumption, Quick response time and less cost. In this paper we can analysis Genetic optimization hybrid ACO Algorithm, and genetic algorithm Hybrid with ABC Algorithm .Finally the analysis is tabulated for finding the better Algorithm.
在云计算领域,越来越多的任务调度算法正在蓬勃发展。然而,它们也有自己的局限性。现在我们正处于分析所有算法的状态,并找出更好的算法来实现高效输出。我们知道,遗传算法是任务调度中一种强大的元启发式算法。但由于参数的随机选择,工艺质量不高。因此,我们选择两种或两种以上优化算法的组合,这取决于更少的执行时间、最大的吞吐量、更少的完工时间、充分的资源利用率、更好的服务质量、最大的能耗、快速的响应时间和更低的成本。本文对遗传优化混合ACO算法、遗传算法混合ABC算法进行了分析,最后将分析结果制成表格,找出更好的算法。
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引用次数: 0
Impact of Massive Open Online Course on the Teacher-Enrollees’ Personal Growth and Professional Development 大规模网络公开课程对教师学员个人成长和专业发展的影响
Q4 Materials Science Pub Date : 2020-02-13 DOI: 10.17632/C9M4J8GHN9.2
Jason V. Chavez
Massive Open Online Course (MOOC) refers to a large scale of participants enrolling on freeaccess online courses. It provides professional development to teachers in a convenient format and structure.This descriptive study aims to assess the experiences of 120 teacher-enrollees from the three provinces inMindanao. It used surveys and interviews in data gathering. Findings show that the teachers evaluatedMOOCs as acceptable, effective and reliable. The Content and Structure are compatible with theirexpectations and the courses developed their personal and professional growth
大规模在线开放课程(Massive Open Online Course, MOOC)是指大量参与者参加免费在线课程。它以方便的形式和结构为教师提供专业发展。本描述性研究旨在评估来自棉兰老三省的120名教师的经验。它使用调查和访谈来收集数据。调查结果显示,教师对mooc的评价是可接受的、有效的和可靠的。课程的内容和结构符合学生的期望,同时也促进了他们的个人和专业成长
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引用次数: 0
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Solid State Technology
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