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REDUCTION IN GREENHOUSE GAS EMISSIONS FROM COCONUT MILK PRODUCTION PLANTS IN THAILAND 减少泰国椰奶生产厂的温室气体排放
IF 0.2 Q4 Engineering Pub Date : 2023-12-22 DOI: 10.55766/sujst-2023-05-e01360
Kanya Kosum, W. Arjharn, P. Liplap
This research aimed to study how to reduce the amount of greenhouse gas generated during the production process of UHT coconut milk in Thailand. The system boundary was defined from cradle to gate, starting from whole coconut until coconut milk production by using life cycle assessment methodology based on ISO 14040. The study was divided into three groups: 1) greenhouse gas emission from the baseline process, 2) greenhouse gas emission from the co-product development process, and 3) greenhouse gas emission from biogas wastewater treatment systems used for electricity generation. For the baseline case, it was found that during the production of 1 kg of UHT coconut milk, the highest GHG emissions came from raw material procurement (78.55%) followed by the production process (18.54%). Electric power consumption included electricity consumption in the production process (0.59%) and the support system (41%). In addition, the electrical energy consumption for baseline processing and the co-product model from biogas was decreased and directly led to a decrease in greenhouse gas emissions and a reduction in carbon for the production process.
本研究旨在探讨如何减少泰国超高温灭菌椰奶生产过程中产生的温室气体数量。通过使用基于 ISO 14040 的生命周期评估方法,确定了从整个椰子到椰奶生产的 "从摇篮到大门 "的系统边界。研究分为三组:1)基准工艺的温室气体排放;2)副产品开发工艺的温室气体排放;3)用于发电的沼气废水处理系统的温室气体排放。在基准案例中,我们发现在生产 1 千克超高温灭菌椰奶的过程中,温室气体排放量最高的是原材料采购(78.55%),其次是生产过程(18.54%)。电力消耗包括生产过程(0.59%)和辅助系统(41%)的电力消耗。此外,基线加工和沼气副产品模型的电能消耗减少,直接导致了温室气体排放量的减少和生产过程中碳的减少。
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引用次数: 0
PREVALENCE OF SICKLE CELL ANEMIA IN YOUTH BY COST EFFECTIVE STRATEGY ALONG WITH HPLC 通过具有成本效益的战略和艾滋病毒/艾滋病伙伴关系,降低镰状细胞性贫血在青少 年中的流行率
IF 0.2 Q4 Engineering Pub Date : 2023-12-20 DOI: 10.55766/sujst-2023-03-e03091
Minal Chetan Thakkar, Hitesh Natvarlal Shah, Prakashbhai Hirabhai Parma, Smit Kirtikumar Sukhadiya
This study aimed to determine the prevalence of sickle cell disease among students of Anand People’s Medicare Society (APMS) using cost-effective screening methods and confirming the results with high-performance liquid chromatography (HPLC). A total of 395 students from Anand, Gujarat, were screened using the sickling test and solubility test as primary screening methods. Haemoglobinopathies carriers were diagnosed and confirmed using HPLC at the Indian Red Cross Society, State Branch in Ahmedabad. Complete hemogram analysis was performed, and the results were tabulated and analyzed. The results indicated that HPLC exhibited 100% sensitivity, specificity, and accuracy, while the sickling test demonstrated a sensitivity of 66.66%, specificity of 97.90%, and accuracy of 97.21%. The solubility test showed a sensitivity of 53.84%, specificity of 96.85%, and accuracy of 95.44%. HPLC had a 100% positive predictive value (PPV) and negative predictive value (NPV), whereas the sickling test had a PPV of 55.55% and NPV of 99.20%. The solubility test yielded a PPV of 36.84% and NPV of 98.40%. In conclusion, the sickling test and solubility test are cost-effective and easily conducted, with the sickling test providing more reliable results with higher sensitivity and specificity compared to the solubility test. HPLC is considered the gold standard test for screening.
本研究旨在采用经济有效的筛查方法确定阿南德人民医疗保险协会(APMS)学生中镰状细胞病的患病率,并用高效液相色谱法(HPLC)确认筛查结果。古吉拉特邦阿南德市共有 395 名学生接受了筛查,主要筛查方法是镰状细胞试验和溶解度试验。血红蛋白病携带者在艾哈迈达巴德的印度红十字会州分会通过高效液相色谱法进行诊断和确诊。对血型图进行了全面分析,并将结果列表分析。结果表明,高效液相色谱法的灵敏度、特异性和准确性均为 100%,而镰状染色试验的灵敏度为 66.66%,特异性为 97.90%,准确性为 97.21%。溶解度测试的灵敏度为 53.84%,特异度为 96.85%,准确度为 95.44%。高效液相色谱法的阳性预测值(PPV)和阴性预测值(NPV)均为 100%,而镰刀菌检测法的 PPV 为 55.55%,NPV 为 99.20%。溶解度检测的 PPV 为 36.84%,NPV 为 98.40%。总之,镰刀试验和溶解度试验成本效益高,操作简便,镰刀试验与溶解度试验相比,结果更可靠,灵敏度和特异性更高。高效液相色谱法被认为是筛查的金标准检测方法。
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引用次数: 0
PRELIMINARY DEVELOPMENT OF NURSES’ PRACTICE OF PEACEFUL END-OF-LIFE CARE INSTRUMENT (NP-PECI) 护士和平临终关怀实践工具(NP-PECI)的初步开发
IF 0.2 Q4 Engineering Pub Date : 2023-12-20 DOI: 10.55766/sujst-2023-03-e03093
Xia Li, W. Kongsuwan, K. Yodchai
Peaceful dying process is considered as an important outcome of high-quality of palliative care and end-of-life care. To meet the patients’ needs of peaceful end of life, appropriate nurses’ practice of peaceful end-of-life care is demanded. However,  no specific instrument was found to assess nurses’ practice of peaceful end-of-life care. This paper aims to report a preliminary development of an instrument to measure practice of peaceful end-of-life care among nurses. Theory of Peaceful End of Life developed by Ruland and Moore was employed as a framework in initial creating 30 item questionnaires of Nurses’ Practice of Peaceful End of Life Instrument (NP-PECI) in English language. The steps of validating contents of questionnaires were followed. Three experts in this area were reviewed and gave comments on each item. Content Validity Index (CVI) was evaluated and its average value was 0.94. Some unclear language items were revised. A pilot study in 60 Chinese nurses in a community hospital was done during March, 2021. The reliability of the NP-PECI was measured by using internal consistence reliability in which Cronbach’s alpha was 0.973. The result of this pilot study showed that the NP-PECI with 30 items was valid and reliable. However, rigorous evaluation of psychometric properties of this instrument will be recommended in a large sample size.
安详的死亡过程被认为是高质量姑息治疗和临终关怀的重要成果。为满足患者安详临终的需求,需要护士开展适当的安详临终护理实践。然而,目前尚未发现评估护士安宁临终护理实践的具体工具。本文旨在报告护士安宁临终护理实践测量工具的初步开发情况。以 Ruland 和 Moore 提出的 "安宁临终 "理论为框架,初步编制了英文版的 "护士安宁临终护理实践问卷"(Nurses' Practice of Peaceful End of Life Instrument,NP-PECI),共 30 个项目。问卷内容的验证步骤如下。三位该领域的专家对每个项目进行了审查并给出了意见。对内容效度指数(CVI)进行了评估,其平均值为 0.94。对一些语言不清晰的项目进行了修订。2021 年 3 月,对一家社区医院的 60 名中国护士进行了试点研究。NP-PECI 的信度采用内部一致性信度进行测量,Cronbach's alpha 为 0.973。试点研究结果表明,包含 30 个项目的 NP-PECI 是有效和可靠的。不过,我们建议在大样本量的情况下对该工具的心理测量特性进行严格评估。
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引用次数: 0
ADSORPTION OF DIBENZOXAZEPINE GAS ON TRANSITION METAL-DOPED SILICON CARBIDE NANOTUBES: A THEORETICAL INVESTIGATION 过渡金属掺杂碳化硅纳米管对二苯并氧氮杂卓气体的吸附:理论研究
IF 0.2 Q4 Engineering Pub Date : 2023-12-20 DOI: 10.55766/sujst-2023-03-e0176
Chanukorn Tabtimsai, Chonpakorn Bootwong, Thanakrit Saramakhom, Banchob Wanno
Dibenzoxazepine (CR) molecule is highly toxic gas, therefore, the development of highly sensitive materials for their adsorption and detection is desirable. Density functional theory (DFT) calculation was performed to study the adsorption behavior of CR gas on the pristine and transition metal (TM=Sc, Ti, Y, Zr, La, and Hf) –doped silicon carbide nanotubes (SiCNT) at both Si and C sites. The most stable adsorption configurations, adsorption distances, adsorption energies, charge transfers, energy gaps, orbital distributions, and density of states are obtained to understand the impacts of CR gas on the adsorption abilities and electronic properties of the pristine and TM–doped SiCNT surfaces. The results show that the pristine SiCNT exhibits low adsorption ability to CR gas. Conversely, the SiCNT doping with TM atom at Si and C sites enhances adsorption ability to CR gas. The strong adsorption of CR gas on TM–doped SiCNT surface is due to more favorable orbital interaction as well as shorter adsorption distance and larger charge transfer than pristine SiCNT. Moreover, the results reveal that the adsorption of CR gas significant changes in the electronic properties of TM–doped SiCNT. Therefore, the doping of TM atoms on SiCNT at both Si and C sites could enhance the adsorption ability and suitable for use as sensors for detecting CR gas.
二苯并氧氮杂卓(CR)分子是一种剧毒气体,因此需要开发高灵敏度的吸附和检测材料。研究人员通过密度泛函理论(DFT)计算,研究了 CR 气体在原始碳化硅纳米管(SiCNT)和过渡金属(TM=Sc、Ti、Y、Zr、La 和 Hf)掺杂碳化硅纳米管(SiCNT)的 Si 和 C 位点上的吸附行为。通过获得最稳定的吸附构型、吸附距离、吸附能、电荷转移、能隙、轨道分布和状态密度,了解 CR 气体对原始碳化硅纳米管和掺杂 TM 的碳化硅纳米管表面的吸附能力和电子特性的影响。结果表明,原始 SiCNT 对 CR 气体的吸附能力较低。相反,在 Si 和 C 位点掺杂 TM 原子的 SiCNT 增强了对 CR 气体的吸附能力。与原始 SiCNT 相比,掺杂 TM 原子的 SiCNT 表面具有更有利的轨道相互作用、更短的吸附距离和更大的电荷转移,因而对 CR 气体具有更强的吸附能力。此外,研究结果表明,吸附 CR 气体会显著改变掺杂 TM 的 SiCNT 的电子特性。因此,在 SiCNT 的 Si 和 C 位点上掺杂 TM 原子可以增强吸附能力,适合用作检测 CR 气体的传感器。
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引用次数: 0
ADAPTIVE TRAFFIC SYSTEM CONTROLLERS IN TRAFFIC ENGINEERING : A SURVEY 交通工程中的自适应交通系统控制器:调查
IF 0.2 Q4 Engineering Pub Date : 2023-12-15 DOI: 10.55766/sujst-2023-03-e03030
Amarpreet Singh, Sandeep Singh, Alok Aggarwal
In today’s era, traffic congestion is the widest spread problem observed all over the world, arising as consequence of exponential rise in vehicle count at the traffic intersections. This growth has largely affected the people as they are experiencing enhanced delay in travelling time and increased fuel consumption which led to wastage of billions of dollars. The current road infrastructure design and traffic signal controlling using a cycle of fixed time phase of green/red/yellow lights are not adequate to tackle the rising demands of traffic in an optimum way. These traditional traffic signal systems cannot handle the dynamics of road traffic at the intersections and hence results in exceeding delays. Also, the volume of traffic at any intersection at different times of the day is uncertain and hence it is hard to get an exact mathematical model for this problem. Many researchers have proposed some solution to this problem and their work is reviewed extensively in this paper. Due to its ability to deal with uncertainty, fuzzy logic is considered as the most appropriate technique to solve this problem and is highly recommended method for implementing automated traffic controllers. Due to its inherent advantages, most of the research in the field of traffic engineering is carried out using fuzzy logic techniques. Hence, this paper presents a systematic review of various techniques that are used for an effective management of traffic, especially focusing on different fuzzy based traffic controllers and their performance comparison to identify the best input output parameter.
在当今时代,交通拥堵是全世界最普遍的问题,它是交通路口车辆数量激增的结果。这种增长在很大程度上影响了人们的出行,因为他们的出行时间延迟了,燃料消耗增加了,导致数十亿美元的浪费。目前的道路基础设施设计和交通信号控制采用固定的绿灯/红灯/黄灯时间周期,不足以以最佳方式应对日益增长的交通需求。这些传统的交通信号系统无法处理交叉路口的道路交通动态,从而导致延误时间过长。此外,一天中不同时间任何交叉路口的交通流量都是不确定的,因此很难为这一问题建立精确的数学模型。许多研究人员都针对这一问题提出了一些解决方案,本文将对他们的工作进行广泛综述。由于模糊逻辑具有处理不确定性的能力,因此被认为是解决这一问题的最合适技术,也是实施自动交通控制器的强烈推荐方法。由于其固有的优势,交通工程领域的大部分研究都是使用模糊逻辑技术进行的。因此,本文对用于有效管理交通的各种技术进行了系统综述,尤其侧重于不同的模糊交通控制器及其性能比较,以确定最佳输入输出参数。
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引用次数: 0
DEVELOPMENT OF MODE CHOICE BEHAVIOR MODEL FOR INTER-REGIONAL PUBLIC TRANSPORT– A CASE STUDY OF INDIA 开发区域间公共交通模式选择行为模型--印度案例研究
IF 0.2 Q4 Engineering Pub Date : 2023-12-15 DOI: 10.55766/sujst-2023-03-e0113
Pinakkumar Ramanuj, Harishkumar Varia, Ami Shah, Arvindkumar M Jain
Mode choice behavior of the inter-regional public transport passengers is important for proficient planning and operation of transport systems in developing countries. It is the responsibility of the authority to satisfy the demand for long regional trips having a significant movement of passengers by providing efficient public transport services. Most of the studies for the mode choice behavior of the passengers have been done for the urban mass transport within the urban conglomerate. The study aims to improve knowledge of the factor affecting passengers' decisions on the mode of travel for inter-regional public transportation in India. The Multinomial Logit (MNL) model and Artificial Neural Network (ANN) models among Gujarat State Road Transport Corporation (GSRTC) buses, Railways, and privately operated buses were developed for the trips between Surat city and Bhavnagar region of Gujarat, India. The final ANN model reflects a difference of attributes has 90.52% mode prediction capability against 70.11% of the MNL model. The developed model gives the proper insight for improving the transportation facilities in the region. It is revealed that the improvement in the service level and egress parameters are more important to attract travelers. The sleeper seat availability, lesser travel cost, lesser egress distance, and availability of night journey have been found important during travelers' thinking process to select the traveling mode. There are 13.1% and 20.1% rises in the probability of choosing GSRTC bus and train mode, respectively, with the improvement in the service level. Moreover, the GSRTC bus should improve its connectivity.
区域间公共交通乘客的模式选择行为对于发展中国家交通系统的有效规划和运营非常重要。当局有责任通过提供高效的公共交通服务来满足乘客大量流动的长距离区域旅行需求。大多数关于乘客出行方式选择行为的研究都是针对城市群内的城市公共交通进行的。本研究旨在进一步了解影响印度地区间公共交通乘客出行方式决策的因素。针对印度古吉拉特邦苏拉特市和巴夫纳加尔地区之间的旅行,开发了古吉拉特邦道路交通公司(GSRTC)公交车、铁路和私人运营公交车之间的多项式对数(MNL)模型和人工神经网络(ANN)模型。最终的 ANN 模型反映了属性差异,其模式预测能力为 90.52%,而 MNL 模型为 70.11%。所开发的模型为改善该地区的交通设施提供了正确的见解。结果表明,提高服务水平和出口参数对吸引旅客更为重要。在旅客选择出行方式的思考过程中,卧铺供应、较低的旅行成本、较短的出口距离和夜间旅行的可 用性被认为是重要因素。随着服务水平的提高,旅客选择海沙铁路运输公司巴士和火车的概率分别提高了 13.1%和 20.1%。此外,GSRTC 巴士应改善其连接性。
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引用次数: 0
OIL PALM SHELL CONCRETE (OPSC): A SHORT REVIEW 油棕壳混凝土(OPSC):简评
IF 0.2 Q4 Engineering Pub Date : 2023-12-14 DOI: 10.55766/sujst-2023-03-e02353
M. F. Hama, M. P. Anwar, T. L. Lau
With the increase of the world’s population, industrial development and the construction of housebuilding and infrastructure activities, the demand for construction material is increasing. Disposals of agricultural waste have been making serious damages to the environment. Thus, by replacing the conventional raw materials used in concrete today by agricultural waste will intensely decrease unwanted impacts caused by the current concrete industry. A novel replacement for the conventional aggregate in the past 4 decades has been the utilization of oil palm shells (OPS) in concrete. This paper reviews published reports on OPS being used as aggregate for concrete in its current stand. Physical properties of OPS, fresh properties of OPSC, mechanical properties of OPSC, Structural behaviour and OPS with other materials have all been reviewed in this paper. Recently, however, development in high yield oil palm fruit has led to waning compressive strengths. This review also indicates the necessity for new investigations based on the new fruit breeding type of oil palm tree which is known as Tenera OPS.
随着世界人口的增加、工业的发展以及房屋建筑和基础设施建设活动的开展,对建筑材料的需求日益增加。农业废弃物的处理对环境造成了严重破坏。因此,用农业废弃物替代目前混凝土中使用的传统原材料,将大大减少目前混凝土行业造成的不良影响。在过去 40 年里,混凝土中使用油棕壳(OPS)是替代传统骨料的一种新方法。本文回顾了已发表的关于油棕壳用作混凝土骨料的报告。本文对 OPS 的物理性质、OPSC 的新拌特性、OPSC 的机械特性、结构行为以及 OPS 与其他材料的搭配进行了综述。然而,最近高产油棕果的发展导致抗压强度下降。本综述还指出,有必要根据油棕树的新果实育种类型(即 Tenera OPS)进行新的研究。
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引用次数: 0
ND3+-DOPED BORATE GLASSES DEVELOPMENT FOR EFFICIENT NIR LASER MEDIUM MATERIAL 开发掺杂 nd3+ 的硼酸盐玻璃,用于高效 nir 激光介质材料
IF 0.2 Q4 Engineering Pub Date : 2023-12-14 DOI: 10.55766/sujst-2023-05-e03038
N. Luewarasirikul, J. Rajagukguk, J. Kaewkhao
This study aims to determine the effect of neodymium concentration on barium sodium borate glasses. The glass samples were fabricated using the melt-quenching technique for analyzing the physical properties, absorption spectra, and NIR emission spectra. The twelve absorption bands increased with the increase in Nd3+ concentration. The most intense absorption band is centered at 583 nm (corresponding to the 4I9/2→4G5/2 transition), which is chosen to investigate the NIR emission spectra. The NIR emission spectra exhibited the most intense emission band at 1,077 nm under 583 nm excitation wavelength, corresponding to the 4F3/2→4I11/2 transition, respectively. The maximum NIR emission intensity was observed at the glass sample with 2 mol% of Nd3+. The NIR emission spectra and the results from Judd-Ofelt theory confirm that 2 mol% of Nd3+-doped Ba-Na-B glasses with a 1,077 nm emission in this work might be used as an NIR laser medium material.
本研究旨在确定钕浓度对硼酸钡钠玻璃的影响。采用熔融淬火技术制作了玻璃样品,并对其物理性质、吸收光谱和近红外发射光谱进行了分析。随着 Nd3+ 浓度的增加,十二条吸收带也随之增加。最强烈的吸收带集中在 583 nm 处(对应于 4I9/2→4G5/2 转变),我们选择该吸收带来研究近红外发射光谱。在 583 nm 激发波长下,近红外发射光谱在 1,077 nm 处显示出最强烈的发射带,分别对应于 4F3/2→4I11/2 转变。在含有 2 mol% Nd3+ 的玻璃样品中观察到了最大的近红外发射光谱强度。近红外发射光谱和 Judd-Ofelt 理论的结果证实,本研究中掺有 2 mol% Nd3+ 的 Ba-Na-B 玻璃可用作近红外激光介质材料,其发射波长为 1,077 nm。
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引用次数: 0
SURFACE FUNCTIONALIZATION OF LINEN FIBER AND ITS DYE-FASTNESS ASSESSMENT USING (4-[(E)-(4-AMINO-2-HYDROXYPHENYL) DIAZENYL] BENZENE- 1-SULPHONIC ACID AND 4-[(E)-(4-{(Z)-[4-(DIMETHYLAMINO) PHENYL] DIAZENYL}-2-HYDROXYPHENYL) DIAZENYL] BENZENE-1-SULPHONIC ACI 使用(4-[(e)-(4-氨基-2-羟基苯基)偶氮]苯-1-磺酸和 4-[(e)-(4-{(z)-[4-(二甲基氨基)苯基]偶氮}-2-羟基苯基)偶氮]苯对亚麻纤维的表面功能化及其染色牢度评估苯-1-磺酸
IF 0.2 Q4 Engineering Pub Date : 2023-12-14 DOI: 10.55766/sujst-2023-03-e03039
Daniel Uwaremhevho Momodu
Textile fibres find application in many fields, such as; Apparel manufacturing, Medical, Agriculture, Packaging, Civil construction, Shipping. Some of these fibres lack special characteristics required for some specific application without any additional treatment. Large scale production of linen fibre has been limited by the tendency of the fibre to absorb water, degradation by micro-organisms and sunlight. These factors ultimately lower the strength and the service life of the fibre. Hence, the need to improve the hydrophobicity of natural linen fibre before application. Poor dye-fibre interaction has been an area of constant interest in the textile industry. This has been expressed by bleeding, crocking, bleaching of fabric resulting to fading of the fabric. These shortcomings are sometimes due to poor treatment, manufacturing processes and customer handling. Natural linen fiber is an eco-friendly ligno-cellulosic fiber known for its strength, resistance to degradation, hydrophobicity when pointedly modified. In this research, chemical modification of scoured and bleached linen fibre by Acetylation, Methylation and Benzoylation was carried out. The chemically modified fibres were evaluated by techniques such as SEM and FTIR spectroscopy. The mechanical property (strength) was determined after each modification. The result obtained revealed an absorption band at 3432 cm-1 - 3450 cm-1 confirming the OH group in the linen fibre. The band at 704 cm-1 indicated the presence of a benzene ring from benzoyl chloride. The chemical modification changed the morphology of the linen fibre for improved dye–fibre interaction. The chemically modified species were dyed and further subjected to a dye fastness test. The results revealed at 4.33a ± 0.69, 5.00a ± 0.00 and 4.67a ± 0.58 as against3.00a±1.00, 3.33a±0.58 and 2.67a±0.58 for light fastness, wash fastness and rub fastness respectively when subjected to ANOVA analysis. In conclusion, benzoylated linen fibre was observed to most improved dye-fibre interaction.
纺织纤维应用于许多领域,如服装制造、医疗、农业、包装、民用建筑和航运。其中一些纤维缺乏某些特定应用所需的特殊特性,无需进行任何额外处理。由于亚麻纤维容易吸水、被微生物和阳光降解,其大规模生产一直受到限制。这些因素最终降低了纤维的强度和使用寿命。因此,有必要在应用前改善天然亚麻纤维的疏水性。染料与纤维之间的不良相互作用一直是纺织业关注的一个领域。具体表现为织物的渗色、钩色和漂白,导致织物褪色。这些缺陷有时是由于处理不当、生产工艺和客户处理不当造成的。天然亚麻纤维是一种环保型木质纤维素纤维,因其强度高、耐降解、疏水性好而闻名。在这项研究中,通过乙酰化、甲基化和苯甲酰化对经清洗和漂白的亚麻纤维进行了化学改性。通过扫描电镜和傅立叶变换红外光谱等技术对化学改性纤维进行了评估。每次改性后,都会测定其机械性能(强度)。结果显示,3432 cm-1 - 3450 cm-1 处的吸收带证实了亚麻纤维中的羟基。704 cm-1 处的吸收带表明苯甲酰氯中含有苯环。化学改性改变了亚麻纤维的形态,从而改善了染料与纤维的相互作用。对化学改性后的亚麻纤维进行染色,并进一步进行染色牢度测试。结果显示,耐光牢度、耐洗牢度和耐摩擦牢度分别为 4.33a ± 0.69、5.00a ± 0.00 和 4.67a ± 0.58,而耐洗牢度、耐洗牢度和耐摩擦牢度分别为 3.00a±1.00、3.33a±0.58 和 2.67a±0.58。总之,苯甲酰化亚麻纤维对染料与纤维间相互作用的改善最大。
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引用次数: 0
DESIGN AND FABRICATION OF THERMOELECTRIC SOLID-STATE AIR CONDITIONER 热电固态空调的设计与制造
IF 0.2 Q4 Engineering Pub Date : 2023-12-14 DOI: 10.55766/sujst-2023-05-e02930
Archusuek Mameekul, A. Vora–ud, Surasak Ruamruk, W. Namhongsa, P. Pilasuta, K. Singsoog, S. Thaowankaew, T. Seetawan
In this study, we designed and fabricated of thermoelectric solid-state air conditioner (TESSAC) within 400 BTU/hour by using a thermoelectric cooling (TEC) module (model: TEC1-12710) for 3 modules. Thermal management was carried out with the aluminum water-to-radiator system through the liquid moly coolant for controlling the temperature on the hot side of the TEC module. The cooling performance and electrical power were measured during the operating system as performed in one cubic meter for 3 h. According to the experimental results, the TEC1-12710 of one module could be generated cooling by decreasing the temperature to -8.5oC. After useful TEC of 3 modules as useful TESSAC fabrication, TESSAC could be cooled at the cold side around 9.3°C, then the temperature at the center simulation room is around 27.5°C within the ambient temperature of 33.5°C. The coefficient of performance (COP) of TESSAC was calculated to be obtained around 5.5 with the AC power used of 202.31 W.
在这项研究中,我们设计并制造了热电固态空调器(TESSAC),使用热电冷却(TEC)模块(型号:TEC1-12710)的 3 个模块,热量单位为 400 BTU/小时。通过液态钼冷却剂的铝水散热系统进行热管理,以控制 TEC 模块热侧的温度。根据实验结果,一个模块的 TEC1-12710 可通过将温度降至 -8.5oC 产生冷却。3 个模块的有用 TEC 用作有用 TESSAC 制造后,TESSAC 冷端可冷却约 9.3°C,然后模拟室中心温度约为 27.5°C,环境温度为 33.5°C。经计算,在使用 202.31 W 交流电的情况下,TESSAC 的性能系数(COP)约为 5.5。
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引用次数: 0
期刊
Suranaree Journal of Science and Technology
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