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The Works and Lives of the Informal Waste Picker; A Case Study at Anandabazar Open Dumping Site, Chattogram City Corporation, Bangladesh 非正规拾荒者的工作与生活孟加拉Chattogram市公司Anandabazar露天倾倒场个案研究
Pub Date : 2023-01-02 DOI: 10.24203/ajas.v10i6.7073
N. Begum, Tarakul Hoque MD Rifat, M. K. Hossain
The study examined the sociodemographic characteristics, health and working conditions of waste pickers at the Anandabazar dumping site, Chattogram, Bangladesh. Through questionnaire surveys data was gathered from waste pickers. The study identifies that 61% of respondents were men and 39% were women. The mean age of the participants was 28.29 ± 9.85 and 84% were uneducated. The majority of them work 8-10 hours per day. Daily average income from recyclables was found BDT 443.5 (US$ 5.15). In terms of health conditions, they were suffering mostly from digestive gastrointestinal issues, such as episodic diarrhea (39%), intestinal worms (57%), and hepatitis A (2.5%). The waste pickers’ living status was appalling, working conditions were hazardous. Yet, many were drawn to informal recycling due to the lack of alternatives. Therefore, special attention is required to enhance their health and working conditions as well as to integrate them into the city's formal SWM system.  
该研究调查了孟加拉国Chattogram的Anandabazar倾倒场拾取废物者的社会人口特征、健康和工作条件。通过问卷调查,从拾荒者那里收集数据。研究指出,61%的受访者都是男性,39%是女性。参与者的平均年龄为28.29±9.85岁,84%未受教育。他们中的大多数人每天工作8-10小时。每天从可回收物中获得的平均收入为443.5泰铢(5.15美元)。在健康状况方面,他们主要患有消化胃肠道问题,如间歇性腹泻(39%)、肠道蠕虫(57%)和甲型肝炎(2.5%)。拾荒者的生活状况骇人听闻,工作条件十分危险。然而,由于缺乏替代品,许多人被非正式的回收所吸引。因此,需要特别注意提高他们的健康和工作条件以及他们融入城市的正式SWM系统。
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引用次数: 0
A Study of the Magnetic Nanocomposites with Natural Polymer Coating From the Perspective of the Targeted Drug Delivery 天然高分子涂层磁性纳米复合材料的靶向给药研究
Pub Date : 2023-01-02 DOI: 10.24203/ajas.v10i6.7117
F. Soleymani
Recent research on the resistance of pathogenic bacteria to existing antibiotics has shown the rapid spread of this problem and has raised concerns in scientific circles and international organizations. The development of new antibiotics is still slow in the face of growing needs. In addition, the overuse of antibiotics in developing countries has exacerbated the problem. Therefore, the development of new and multidimensional strategies is necessary to address this global problem. One of the solutions that has been considered by researchers in recent years is the development of targeted drug delivery systems based on magnetic nanoparticles. Unique magnetic properties the physicochemical and physiological properties of magnetic nanoparticles have made them useful as carriers for delivering drugs to the target tissue. In this study, we try to provide a general study to some subjects such as synthesis of magnetic nanoparticles and coating of these nanoparticles with natural polymer to grain (mucilage to grain) as a biocompatible, non-toxic and oral polymeric agent for maximum loading of ciprofloxacin antibiotic on nanostructured nuclei Magnetite and shell to mucilage to grain, to study the effect of different parameters and fabrication conditions of samples on the structural, physicochemical, magnetic, colloidal stability and antibacterial properties of samples, and also to investigate the effect of pH on ciprofloxacin adsorption on magnet nanoparticles by mucilage to the grain and release of the drug from these nanoparticles.
最近关于致病菌对现有抗生素的耐药性的研究表明,这一问题迅速蔓延,并引起了科学界和国际组织的关注。面对日益增长的需求,新抗生素的开发仍然缓慢。此外,发展中国家过度使用抗生素加剧了这一问题。因此,有必要制定新的多维战略来解决这一全球性问题。近年来,研究人员考虑的解决方案之一是开发基于磁性纳米颗粒的靶向药物递送系统。磁性纳米颗粒独特的磁性、物理化学和生理特性使其成为将药物输送到靶组织的有效载体。在本研究中,我们试图对磁性纳米颗粒的合成和天然聚合物对颗粒(黏液对颗粒)的包覆作为一种生物相容性、无毒的口服聚合物剂,在纳米结构核磁铁矿和壳黏液对颗粒上最大负载环丙沙星抗生素等课题进行一般的研究,研究不同参数和制备条件对样品的结构、物理化学、磁性、考察了pH对磁性纳米颗粒吸附环丙沙星的影响,以及pH对颗粒黏液吸附环丙沙星和药物释放的影响。
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引用次数: 0
A Proposed Algorithm for Determining the Suitable Number of Significant Digits of Force Transducer Calibration Constants 一种确定力传感器校准常数有效位数的算法
Pub Date : 2022-11-05 DOI: 10.24203/ajas.v10i5.7072
R. Hegazy, Magdi Ibrahim, G. M. Mahmoud
Precision measurement is one of the important goals of measurement and calibration. Positive measures are designed to provide researches with the highest accuracy and precision levels. In force measurements, force measuring instrument manufacturers are striving to achieve the best force measurement resolution to accompany the high level of calibration measurement capabilities achieved by the primary deadweight machines. In the calibration of the force transducers, polynomial equations which correlate, the applied load on the transducer and its corresponding output signal in mV/V are deduced. These equations contain numerical constants A, B and C. This paper introduces a mechanism to determine the suitable number of significant digits for these constants. Error analysis procedure for the calibration polynomial equation is proposed. This proposed algorithm safeguards the most accurate and realistic method for rounding the calibration constants
精密测量是测量与校准的重要目标之一。积极的措施旨在为研究提供最高的准确性和精度水平。在力测量中,力测量仪器制造商正在努力实现最佳的力测量分辨率,以配合主要自重机实现的高水平校准测量能力。在力传感器的标定中,推导出了力传感器所受载荷与输出信号(mV/V)之间的多项式方程。这些方程包含数值常数A、B和c。本文介绍了一种确定这些常数的有效位数的机制。给出了标定多项式方程的误差分析方法。该算法保证了最准确、最真实的校准常数舍入方法
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引用次数: 0
Deep Learning Applications and Their Worth: A Short Review 深度学习应用及其价值:简短回顾
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7078
Maad M. Mijwil, Dhamyaa Salim Mutar, Enas Sh. Mahmood, Murat Gök, Süleyman Uzun, R. Doshi
Deep learning has become a favoured trend in many applications serving humanity in the past few years. Since deep learning seeks useful investigation and can learn and train huge amounts of unlabelled data, deep learning has been applied in many fields including the medical field. In this article, the most noteworthy applications of deep learning are presented shortly and positively, they are image recognition, automatic speech recognition, natural language processing, drug discovery and toxicology, customer relationship management, recommendation systems and bioinformatics. The report concluded that these applications have a significant and vital role in all areas of life.
在过去的几年里,深度学习已经成为许多服务于人类的应用程序的一个受欢迎的趋势。由于深度学习寻求有用的调查,并且可以学习和训练大量未标记的数据,因此深度学习已经应用于包括医疗领域在内的许多领域。本文简要介绍了深度学习最值得关注的应用,包括图像识别、自动语音识别、自然语言处理、药物发现和毒理学、客户关系管理、推荐系统和生物信息学。报告的结论是,这些应用在生活的各个领域都发挥着重要而至关重要的作用。
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引用次数: 1
Employing a Convolutional Neural Network to Classify Medical Images: A Case Study 使用卷积神经网络对医学图像进行分类:一个案例研究
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7075
Maad M. Mijwil, Anmar Alkhazraji, Abdel-Hameed W. Al-Mistarehi, R. Doshi, Enas Sh. Mahmood
A convolutional neural network is one of the deep learning architectures that has been involved in a lot of the literature, and it's incredible at work. The convolutional neural network is distinguished in its use in computer vision and graphical analysis applications. It is characterised by the actuality of one or more hidden layers that extract features in images or videos, and there is also a layer to show the effects. In this regard, the authors decided to involve the convolutional neural network algorithm to classify a few chest X-ray images of COVID-19 patients and study the behaviour of this algorithm and the effects that will be obtained at the time of training. Finally, this study concluded that the performance and practices of this algorithm are very excellent and give satisfactory effects with a perfect training time.
卷积神经网络是深度学习架构之一,在很多文献中都有涉及,它在工作中是令人难以置信的。卷积神经网络以其在计算机视觉和图形分析应用中的应用而闻名。它的特点是一个或多个隐藏层的现实性,提取图像或视频中的特征,还有一个层来显示效果。因此,作者决定使用卷积神经网络算法对几张COVID-19患者的胸部x线图像进行分类,并研究该算法的行为以及在训练时将获得的效果。最后,本文的研究表明,该算法的性能和实践是非常优秀的,并且在一个完美的训练时间内取得了令人满意的效果。
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引用次数: 0
Exogenous Putrescine Enhances Rice Seed Germination in Salinity Stress 外源腐胺促进盐胁迫下水稻种子萌发
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7044
Md. Abdus Sabur, Md. Anwarul Haque, M. Islam, Muhammad Angkan Khan, H. M. Faruquee, Md. Azizul Islam
Putrescine plays a distinct role in various types of biological functions in all living organisms, as well as environmental stress. The aim of the study is to effect of exogenous putrescine on the physiological condition of the rice seeds investigated. Salt treatment resulted in the reduction of speed of germination, germination, germination energy, germination energy percentage, final germination percentage, shoot and root length, and plant dry weight, where proline content was remarkably increased. Among the rice varieties, BRRI 48 was affected maximum by way of salinity in case of germination and growth, and GHORIAL become least affected in comparison to other varieties. However, exogenous putrescine treatment significantly enhances rice seeds germination, as well as shoot and root length in all varieties.  Our findings reveal that plant putrescine tremendously reduced rice salt tolerance. 
腐胺在所有生物体内的各种生物功能以及环境胁迫中发挥着独特的作用。研究外源腐胺对水稻种子生理状况的影响。盐处理降低了种子的萌发速度、发芽率、发芽率、最终发芽率、茎长和根长以及植株干重,其中脯氨酸含量显著增加。在水稻品种中,BRRI 48在萌发和生长过程中受盐度影响最大,ghorio受盐度影响最小。然而,外源腐胺处理显著提高了所有品种的种子萌发率,以及茎和根的长度。我们的研究结果表明,植物腐胺极大地降低了水稻的耐盐性。
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引用次数: 0
Pattern and Determinants of Rice Combine Harvester Adoption in Isabela, Philippines 菲律宾伊莎贝拉水稻联合收割机采用的模式和决定因素
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7050
Hernaiz G. Malanon, I. Pabuayon
With the need to promote wider adoption of rice combine harvesters (RCH) in the Philippines, this study analyzed the adoption process and investigated the factors that influenced complete adoption of the technology. Data was gathered through survey of 230 rice farmers and supplemented by key informant interviews in 24 rice-producing municipalities of the province. Results showed that RCH was adopted by farmers with higher level of education, higher income, larger farm holdings and with irrigated farms situated in the lowlands. About 90 percent of rice farmers in the area are already using RCH and adoption was considered permanent since all adopters did not revert to traditional practice after initially using the technology. The remaining non-mechanized farms are the rain-fed areas with poor road access, terraced small plots and waterlogged farms that deter the use of heavy machines. The respondents cited reduction of harvesting-threshing time which averts the exposure of farmers to climate risks brought by tropical cyclones and reduction of harvesting-threshing costs and postproduction losses as primary reasons for adoption of RCH. Empirical estimates using Logistic Regression revealed that RCH adoption increases with farm size and educational attainment. Topography is also an important determinant of adoption as farms situated in the lowland are more likely to adopt RCH than in the upland areas. With these findings, it is recommended that drivers and barriers of RCH adoption RCH be considered in the technology promotion.
为了促进菲律宾水稻联合收割机(RCH)的广泛采用,本研究分析了采用过程,并调查了影响该技术完全采用的因素。数据通过对该省24个水稻生产市的230名稻农的调查收集,并辅以对关键信息提供者的访谈。结果表明,教育程度高、收入高、农田面积大、灌溉农田位于低地的农民采用RCH。该地区约90%的稻农已经在使用RCH,由于所有采用者在最初使用该技术后都没有恢复传统做法,因此这种采用被认为是永久性的。其余的非机械化农场都是雨水灌溉的地区,道路通道不好,梯田小块和水淹的农场阻碍了重型机器的使用。受访者指出,采用RCH的主要原因是减少了收获-脱粒时间,避免了农民面临热带气旋带来的气候风险,减少了收获-脱粒成本和后期损失。使用Logistic回归的实证估计表明,RCH的采用随着农场规模和教育程度的增加而增加。地形也是采用RCH的一个重要决定因素,因为位于低地的农场比位于高地的农场更有可能采用RCH。根据这些发现,建议在技术推广中考虑采用RCH的驱动因素和障碍。
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引用次数: 0
Physico-chemical Characterization of Household Waste from the City of Tsévié (Togo) 多哥tsassimvi<e:1>市生活垃圾的理化性质研究
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7043
M. B. Bodjona, E. Kondoh, S. Tchegueni, E. Kolédzi, K. Kili, G. Tchangbedji
No previous studies have been carried out on the type of waste in the municipality of Tsévié, the capital of the maritime region in Togo. As part of the implementation of the Water and Sanitation project in Togo (PEAT2), two characterization campaigns were carried out on the household solid waste in this city. The characterization method used is that of MODECOM (Method of Characterization of Household Waste). This method involves sampling 500 kg of waste on all collected waste. Two types of sorting are carried out. Sorting by size (<10 m, 20-100 mm >100 mm) and sorting by category (13 categories). Since waste varies according to its source, samples are made up of two types: market waste and household waste. The results indicate that the fine and extra fine fractions are the majority with 54.45% in the rainy season and 56.57% in the dry season. These physico-chemical analyses carried out on the waste of the city of Tsévié, constitute a database and allow the local authorities to plan a better waste management in the municipality.
以前没有对多哥沿海地区首府茨萨维耶斯市的废物类型进行过研究。作为多哥水和卫生项目(PEAT2)实施的一部分,对该市的家庭固体废物进行了两次定性活动。所使用的表征方法是MODECOM(生活垃圾表征方法)。这种方法包括在所有收集到的废物中抽样500公斤废物。进行两种类型的分类。按尺寸排序(100mm),按类别排序(13类)。由于废物的来源不同,样本由两类组成:市场废物和家庭废物。结果表明:细粒和超细粒组分在雨季占54.45%,在旱季占56.57%;对茨萨梅耶维奇市的废物进行的这些物理化学分析构成了一个数据库,使地方当局能够在该市规划更好的废物管理。
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引用次数: 0
The Distinction between R-CNN and Fast R-CNN in Image Analysis: A Performance Comparison R-CNN与Fast R-CNN在图像分析中的区别:性能比较
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.7064
Maad M. Mijwil, Karan Aggarwal, Ruchi Doshi, K. Hiran, Murat Gök
Deep learning techniques have become vital in many fields in the modern era because they are excellent at analysing and predicting real big data to act in different situations. Although it is marvellous in many aspects, it is prone to misinterpretation of data, so teams of experienced specialists cannot be dispensed with in following up on the execution stages of data analysis. Convolutional Neural Network is one of the most significant deep learning techniques. It is widely employed in visual image analysis. In this article, R-CNN and Fast R-CNN are summarised and compared and are the best in image analysis. This article concluded that the most suitable performance is for Fast R-CNN in testing and training.
深度学习技术在现代许多领域都变得至关重要,因为它们擅长分析和预测真实的大数据,以便在不同情况下采取行动。虽然它在很多方面都是不可思议的,但它容易对数据产生误解,因此在数据分析的执行阶段跟进时,不可缺少经验丰富的专家团队。卷积神经网络是最重要的深度学习技术之一。它广泛应用于视觉图像分析。本文对R-CNN和Fast R-CNN进行了总结和比较,两者在图像分析方面是最好的。本文的结论是Fast R-CNN在测试和训练中最适合的性能。
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引用次数: 10
Energy Conservation Principle from the Perspective of the Energy Structure Theory 从能量结构理论看能量守恒原理
Pub Date : 2022-11-04 DOI: 10.24203/ajas.v10i5.6950
Saeed Shahsavari, Pooya Torkaman
In this paper, the energy conservation principle is investigated from the perspective of the energy structure theory. Energy structure theory presents the basic equation as energy structure equation has been developed to study physical processes considering effects of the second law of thermodynamics directly. Energy components are used as basis of the energy structure equation. In this paper, to investigate the energy conservation principle using the energy structure equation, the variation of the energy structure equation is studied in different paths for the same amount energy applying to the system. In fact, a quasi-static path is used as a reference path, and other paths are studied using this reference when the same amount of energy is applied to the system in different conditions. Using this approach, in fact, energy conservation principle is applied to the energy structure equation, and therefore, the resultant relation has the first and second laws of thermodynamics as its basis together that has been developed in one relation. Therefore, the extracted relation will be a bidirectional relation that means all processes must satisfy this relation and vice versa.
本文从能量结构理论的角度对能量守恒原理进行了研究。当能量结构方程被发展为直接考虑热力学第二定律影响的物理过程时,能量结构理论给出了基本方程。能量分量作为能量结构方程的基础。本文利用能量结构方程来研究能量守恒原理,研究了施加在系统上相同能量时,能量结构方程在不同路径上的变化。实际上,采用准静态路径作为参考路径,在不同条件下对系统施加相同能量时,使用该参考路径研究其他路径。利用这种方法,实际上是把能量守恒原理应用到能量结构方程中,因此,结果关系以热力学第一定律和第二定律为基础,在一个关系中发展起来。因此,提取的关系将是一个双向关系,这意味着所有进程都必须满足这个关系,反之亦然。
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引用次数: 1
期刊
Asian Journal of Applied Sciences
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