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Influence of Organic Matter Type on Porosity Development in Organic-Rich Shales: Combining Microscopy, Neutron Scattering and Physisorption Approaches 有机物类型对富有机页岩孔隙发育的影响:结合显微镜、中子散射和物理吸附方法
Q4 Physics and Astronomy Pub Date : 2023-04-03 DOI: 10.1080/10448632.2023.2191571
C. Delle Piane, H. Ansari, Zhongsheng Li, J. Mata, W. Rickard, R. Pini, D. Dewhurst, N. Sherwood
Shales are economically significant fine-grained sedi-mentary rocks, acting as sources and seals for energy resources, seals for underground carbon sequestration, and can contain metal enrichments up to low-grade ore lev-els. Critical to the accurate evaluation of shale prospec-tivity as reservoirs for energy resources and as seals for long-term underground retention of fluids and radioac-tive waste is the evaluation of their porosity and pore size distribution to help elucidate and appropriately model the mechanisms of gas/liquid transport and trapping over time and space.
页岩是经济上重要的细粒沉积岩,是能源资源的来源和封存物,也是地下碳封存的封存物,并且可以含有高达低品位矿石水平的金属富集物。准确评估页岩作为能源储层和流体和放射性废物长期地下滞留的密封层的勘探活动的关键是评估其孔隙度和孔径分布,以帮助阐明和适当模拟气体/液体随时间和空间的输送和捕获机制。
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引用次数: 0
Modeling of Flow Rate at Sukkur Barrage using Artificial Neural Networks (ANNs) 苏库尔拦河坝流量的人工神经网络建模
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.179
Rizwan Jokhio, M. Babar, P. M. Ajmal
Modeling of flow discharge plays a significant role in effective planning, sustainable usage, development, and management of water resources in short (hourly) and long-term (monthly) temporal categories. Since the inception of managing water resources, various techniques such as conceptual, metric, and physical models have been introduced all of these require a large amount of data, labor, and expense to be incorporated to obtain reliable results, due to which Artificial Intelligence methods were introduced that require less amount of data, time, expense and as well as experience to model flow discharge. In this research study, an attempt was made by employing two different artificial neural network techniques feedforward neural networks (FFNN), and time-lagged neural networks (TLNN) to model and predict the river flow discharge at daily and monthly timescale. 2010 and 503 no. of observations were used for model calibration and validation in daily time scale while 557 and 139 observations were used in monthly timescale. The result of the study revealed that the FFNN modeling approach has captured the daily and monthly stream flow variability very well than the TLNN model with R2 of 0.91 on the daily and 0.71 on the monthly time scale while R2 for the TLNN model was 0.79, and 0.34 for daily and monthly timescale. This indicates that the FFNN technique requires less no. of observations and is more reliable than TLNN and can be used to model river flow.
流量建模在短期(小时)和长期(月)时间范畴的水资源有效规划、可持续利用、开发和管理中发挥着重要作用。自水资源管理开始以来,引入了各种技术,如概念、度量和物理模型,所有这些都需要大量的数据、劳动力和费用来获得可靠的结果,因此引入了人工智能方法,需要较少的数据、时间、费用和经验来模拟流量排放。本研究尝试采用前馈神经网络(FFNN)和时滞神经网络(TLNN)两种不同的人工神经网络技术,在日和月时间尺度上对河流流量进行建模和预测。2010和503号在日时间尺度上使用了8个观测值进行模型校正和验证,在月时间尺度上使用了557和139个观测值。研究结果表明,与TLNN模型相比,FFNN模型在日和月时间尺度上的R2分别为0.91和0.71,而TLNN模型在日和月时间尺度上的R2分别为0.79和0.34。这表明FFNN技术需要较少的no。它比TLNN更可靠,可以用来模拟河流流量。
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引用次数: 0
COST AND TIME PERFORMANCE ANALYSIS ON CONTROLLING CONTRUCTION PROJECTS WITH “PERT” METHOD 运用“pert”方法控制建设项目的成本和时间绩效分析
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.184
Achmad Safri Syamsudin, Julistyana Tistogondo, Diah Ayu Restuti Wulandari
In the matter of parking lot problems, there are many ways to solve the problems that always arise from the parking lot with more and more and require a very large land with adequate capacity, therefore one of them is by making a multi-storey parking building. The more development of construction work, the more problems that arise during construction, one of which is project management problems which before the implementation or implementation of development are always planned to determine the schedule, time, and cost needed. In the construction of the Airlangga University multi-storey parking building project, controlling the schedule of the plan should have been carried out in 300 days. With the CPM and PERT methods used, the calculation duration is 340 days with a probability of 99.85% to speed up work and delays. Acceleration is carried out by adding workers so that it will affect costs, so after adding workers with normal costs of Rp. 49.139.000.850,26. and after the addition of manpower to speed up the implementation time with a total cost of Rp 49,227,563,678.83. after accelerating.
在停车场问题上,由于停车场越来越多,需要非常大的土地和足够的容量,因此解决停车场问题的方法有很多,其中之一就是建造多层停车场。施工工作越发展,在施工过程中出现的问题越多,其中之一就是项目管理问题,在实施或实施开发之前总是计划确定所需的进度,时间和成本。在Airlangga大学多层停车楼项目的建设中,控制计划的进度应在300天内完成。使用CPM和PERT方法,计算时间为340天,加速工作和延迟的概率为99.85%。加速是通过增加工人来进行的,这样会影响成本,所以增加工人后正常成本为Rp. 49.139.000.850,26。在增加人力以加快执行时间之后,总成本为49,227,563,678.83卢比。后加速。
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引用次数: 0
SOIL STABILIZATION (SUBGRADE) FOR AINARO LOT 2 ROAD PAPER, TIMOR – LESTE 东帝汶阿纳罗2号路纸的土壤稳定(路基)
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.185
Pedro Adelio Verona Soares, Sapto Budy Wasono
Soil conditions in Timor Leste vary greatly in terms of grain and bearing capacity. The soil found at the laulara solerema location is clay because it can be seen from various types of samples and the results of analysis in the laboratory can determine the quality of the soil and the type of soil. This study aims to determine the characteristics of clay soil in Laura – Solerema as a road pavement material, especially the soil foundation  The method used in determining the mixture through several tests, among others, sieve analysis test, compaction test (standard proctor) CBR (California Bearing Ratio) test, Swelling, Atterberg limit test and compaction test. The results of testing the clay soil in Laura – Solerema partially have values that do not meet the requirements as road pavement materials, especially subgrade layers. The stabilization study aims to study and determine the results of soil test data, to be able to determine the optimum moisture content (OMC) and dry volume (MDD), and the Atterberg limit with CBR values of 95% and 100%.
东帝汶的土壤条件在粮食和承载能力方面差别很大。在laulara solerema地点发现的土壤是粘土,因为它可以从各种类型的样品中看到,并且在实验室的分析结果可以确定土壤的质量和土壤的类型。本研究旨在确定粘土在Laura - Solerema作为道路路面材料的特性,特别是土壤基础,采用的方法是通过几种试验来确定混合物,其中包括筛分分析试验、压实试验(标准proctor) CBR(加州承载比)试验、膨胀试验、Atterberg极限试验和压实试验。Laura - Solerema地区的粘土测试结果部分不符合道路路面材料,特别是路基层的要求。稳定化研究旨在研究和确定土壤试验数据的结果,以确定最佳含水率(OMC)和干体积(MDD),以及CBR值为95%和100%时的Atterberg极限。
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引用次数: 0
THE EFFECT OF ADDING FLY ASH AND GLASS POWDER ON THE COMPRESSION STRENGTH OF CONCRETE 掺加粉煤灰和玻璃粉对混凝土抗压强度的影响
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.183
Sandi Indratama, A. Sumarno, Syafwandi Syafwandi, Agyanata Tua Munthe
The purpose of this study was to determine the effect of the use of fly ash waste and glass powder on the compressive strength of concrete. 17.5% at the age of 3 days, 7 days, 14 days, and 28 days. for the specimens used measuring with a diameter of 10 cm and a height of 20 cm as many as 36 test samples by making variations of the day as many as 3 samples of the test object, After testing the compressive strength of concrete, the compressive strength of the characteristic concrete with the addition of 7% fly ash and glass powder 5%, the maximum compressive strength at the age of 7 days was 23.35 Mpa, the age of 14 days was 28.93 Mpa, and the age of 28 days was 33.85 Mpa. These results exceed the value of the compressive strength of normal concrete characteristics and indicate that fly ash and glass powder increase the compressive strength of concrete. There is a strong influence from the addition of fly ash and glass powder with variations in the addition and certain age of concrete  
本研究的目的是确定粉煤灰废料和玻璃粉的使用对混凝土抗压强度的影响。3日龄、7日龄、14日龄、28日龄17.5%。使用的标本测量直径10厘米,高20厘米多达36个测试样本通过一天变化多达3样品的测试对象,之后测试混凝土的抗压强度、抗压强度的特点与添加7%粉煤灰混凝土和玻璃粉末5%,7天的最大抗压强度时为23.35 Mpa, 14天的年龄是28.93 Mpa, 28天的年龄为33.85 Mpa。这些结果超过了普通混凝土的抗压强度特性值,表明粉煤灰和玻璃粉提高了混凝土的抗压强度。粉煤灰和玻璃粉的掺量随混凝土掺量的变化和龄期的不同而有较大的影响
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引用次数: 0
CONCRETE BRIDGE DESIGN PRT 80M SPAN TENSION 混凝土桥梁设计PRT张力跨度80m
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.181
Muhammad Alif Lutfi, Tony Hartono Bagio
Kali warkapi bridge km 49+250 Manokwari, West papua which connects several districts in West papua province stretches 80m based because the bridge previously decreased until it is no longer feasible to use, the type of steel frame bridge structure, then in this final project the design for the replacement of kali warkapi bridge using prestressed concrete structure type at this initial stage the analysis of exsisting conditions, planning of upper and lower bridge structures and calculations is carried out. Superstructure planning takes into account the loads that may occur, namely self-load, additional dead load, traffic load, wind load and earthquake load. In planning the bridge is calculated using Ms.Excel.
Kali warkapi桥km 49+250 Manokwari,连接西巴布亚省的几个地区,延伸80米为基础,因为桥梁以前减少了,直到它不再可行使用,钢框架桥结构的类型,然后在这个最终项目的设计中,使用预应力混凝土结构类型替换Kali warkapi桥,在这个初始阶段的现有条件分析,进行了上、下桥梁结构的规划和计算。上部结构的规划考虑了可能发生的荷载,即自荷载、附加恒荷载、交通荷载、风荷载和地震荷载。在规划桥梁时,使用excel软件进行计算。
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引用次数: 0
Assessment of Groundwater Quality using Water Quality Index, and Geo-Spatial Tools 基于水质指数和地理空间工具的地下水质量评价
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.180
P. M. Ajmal, M. Babar, N. Gul, Rizwan Jokhio
Groundwater is considered a significant component of valuable freshwater resources for the living beings living in the arid and semi-arid regions of Pakistan, factors such as climate change, landfill deposits, application of fertilizers and pesticides on agricultural lands, leakages from septic tanks, industrial effluents, and urbanization jeopardizing the groundwater quality that makes its timely assessment necessary for human survival to protect people from water-borne diseases. This research study was carried out to analyze the 13 physicochemical parameters in the 38 groundwater samples that were taken from nearby different locations of Akram, Pinyari, and Phuleli canal within the jurisdiction of district Hyderabad. 26 samples were taken from hand pumps, electric motors and 12 samples were taken from tube wells to investigate the variability in groundwater quality. The water quality index and kelly’s ratio, magnesium hazard, residual sodium carbonate, sodium absorption ratio, soluble sodium percentage, and permeability index were used to assess the suitability of groundwater for drinking, and agricultural purposes. The result of the study revealed that alkalinity, bicarbonates, carbonates, magnesium, PH, potassium, and sodium were within the permissible limit of WHO Standards in all the samples, while the concentration of calcium was crossing the permissible limit only in one sample. Moreover, the availability of Chloride (Cl) was found in 16 samples that were above the limit ranges from 274.9 to 2549,  High concentration of EC was found in 14 samples than the permissible limit having values from 2212 to 8360 (P26), and Total Hardness (TH) were found only in 6 samples slightly high from the permissible limit ranges from 509 to 651, and TDS were present in excessive amounts than the allowable limit from 1100 to 4180 mg/l (P26) in 10 samples. Considering the Water Quality Index (WQI) it was observed that 8 sample falls in the good category, 2  samples in the poor category, 11 samples in the very poor category, and 17 samples in the unsuitable category of water quality.
地下水被认为是生活在巴基斯坦干旱和半干旱地区的生物宝贵淡水资源的重要组成部分,气候变化、垃圾填埋场沉积物、在农业用地上施用化肥和农药、化粪池泄漏、工业废水和城市化等因素危及地下水质量,因此必须及时评估地下水质量,以保护人们免受水传播疾病的侵害。本研究分析了在海德拉巴区管辖范围内的Akram、Pinyari和Phuleli运河附近不同地点采集的38个地下水样本中的13个物理化学参数,其中26个样本取自手动泵、电动机,12个样本取自管井,以调查地下水质量的变化。采用水质指数和凯利氏比、镁危害、残余碳酸钠、钠吸收比、可溶性钠百分比和渗透指数评价地下水的饮用适宜性和农业适宜性。研究结果显示,所有样品的碱度、碳酸氢盐、碳酸盐、镁、PH、钾和钠均在世界卫生组织标准的允许范围内,而钙的浓度仅在一个样品中超过允许范围。此外,氯(Cl)的可用性被发现在16个样品上面的限制范围从274.9到2549,在14个样本中发现了高浓度的EC比容许极限的值从2212年到8360年(P26)和总硬度(TH)只在6个样品发现略高的容许极限范围从509年到651年,和TDS在场过量比允许上限从1100年到4180 mg / l (P26)在10个样本。考虑水质指数(WQI), 8个样本属于水质良好类别,2个样本属于水质较差类别,11个样本属于极差类别,17个样本属于水质不适宜类别。
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引用次数: 0
Study of the Stability in the High Building: Case Study in Burj Dubai, UAE 高层建筑稳定性研究——以阿联酋迪拜塔为例
Q4 Physics and Astronomy Pub Date : 2023-02-23 DOI: 10.29138/neutron.v22i2.182
Mohammed Ahmed Omar Bakarman, M. I. Setiawan, Adi Prawito
Many people today live in urban cities and it is increasing every year, because of their need to live and work and This paper summarizes the solutions and the importance of stability in high-rise buildings and their tolerance of earthquakes and winds, and all that is needed for the stability of the building and to solve the problems that occur in particular and in detail Highlighted are the key connections of the tallest and ultra-slender buildings that have been designed and built for the world's tallest buildings. He talks about high-rise towers in general and about Burj Dubai in particular, and there will be what the engineers said and suggested before, and I will conclude in a simple way.
现在很多人都住在城市里,而且每年都在增加,因为他们需要生活和工作。本文总结了解决方案,以及高层建筑稳定性的重要性,以及它们对地震和风的耐受性。所有这些都需要建筑的稳定性和解决特别和详细出现的问题,重点强调的是为世界最高建筑设计和建造的最高建筑和超薄建筑之间的关键联系。他一般谈论高层建筑,特别是迪拜塔,还有工程师之前说过的和建议,我将以一种简单的方式总结。
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引用次数: 0
Michael Steiner (1943–2022) 迈克尔·施泰纳(1943–2022)
Q4 Physics and Astronomy Pub Date : 2023-01-02 DOI: 10.1080/10448632.2023.2165385
K. Habicht, K. Siemensmeyer
{"title":"Michael Steiner (1943–2022)","authors":"K. Habicht, K. Siemensmeyer","doi":"10.1080/10448632.2023.2165385","DOIUrl":"https://doi.org/10.1080/10448632.2023.2165385","url":null,"abstract":"","PeriodicalId":39014,"journal":{"name":"Neutron News","volume":"34 1","pages":"20 - 21"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49555054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
James Byrne (1933–2022) 詹姆斯·伯恩(1933-2022)
Q4 Physics and Astronomy Pub Date : 2023-01-02 DOI: 10.1080/10448632.2023.2166762
D. Worcester, J. Morse, C. G. Habeck
{"title":"James Byrne (1933–2022)","authors":"D. Worcester, J. Morse, C. G. Habeck","doi":"10.1080/10448632.2023.2166762","DOIUrl":"https://doi.org/10.1080/10448632.2023.2166762","url":null,"abstract":"","PeriodicalId":39014,"journal":{"name":"Neutron News","volume":"34 1","pages":"22 - 23"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45012818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Neutron News
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