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Global Research Collaboration for Vapour Intrusion 全球蒸汽入侵研究合作
Pub Date : 2021-04-30 DOI: 10.5539/EP.V10N2P1
J. Provoost, K. Victor
The complexity of the vapour intrusion (VI) transport pathway has received an ever-increased interest worldwide, and an improved and consolidated understanding of the VI issue requires collaboration between international research groups. This study uses the social network analysis methodology, applied to bibliometric authorship for VI research, to discover trends in collaboration, identify lead scientists, organisations, and countries. Furthermore, some of the external factors influencing the collaboration and productivity were assessed. The data suggests that the global research network for VI produced over a time span of 54 years 566 publications via 157 sources. The research network is composed of 437 organisations and 1053 authors from 33 countries. This suggests an increasingly active international collaborative research effort. However, inter-continental cooperation is much less than continental. The top five most central countries in the network are the USA, followed by Canada, China, The Netherlands, and Italy. The researchers with the most publications are from these five countries as well as the top organisations. The social network analysis conducted shows a good approximation of the collaborative structure for the key countries, organisations and researchers involved. Since 2010, the research community has become more stable.
蒸汽侵入(VI)运输途径的复杂性在世界范围内受到越来越多的关注,对VI问题的改进和巩固的理解需要国际研究小组之间的合作。本研究使用社会网络分析方法,应用于VI研究的文献计量作者,以发现合作趋势,确定领先的科学家,组织和国家。此外,还对影响协作和生产力的一些外部因素进行了评估。数据表明,全球VI研究网络在54年的时间跨度中通过157个来源产生了566种出版物。该研究网络由来自33个国家的437个组织和1053位作者组成。这表明国际合作研究的努力日益活跃。然而,洲际合作远不如大陆合作。该网络中最中心的五个国家是美国,其次是加拿大、中国、荷兰和意大利。发表论文最多的研究人员来自这五个国家以及顶级机构。所进行的社会网络分析显示了关键国家、组织和研究人员参与的合作结构的良好近似。自2010年以来,研究界变得更加稳定。
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引用次数: 0
Seedling and Adult Plant Resistance in the Ethiopian Bread Wheat Landraces to Stripe Rust Disease 埃塞俄比亚面包小麦地方品种幼苗和成株对条锈病的抗性
Pub Date : 2021-03-28 DOI: 10.5539/EP.V10N1P57
F. Yirga, A. Badebo, M. Dejene
High yielding farmers’ bread wheat cultivars are threatened by emerging race(s) of stripe (yellow) rust caused by Puccinia striiformis f.sp. tritici (Pst) in the highlands of Ethiopia. In depletion of rust resistance in commercial cultivars, researchers often look for new sources from close relatives and landraces. The objective of this study was to determine stripe rust resistance in selected Ethiopian bread wheat landraces obtained from the Ethiopian Institute of Biodiversity (IBCE). In 2017, a total of 152 accessions were exposed to the prevailing stripe rust races in hot spot areas (Kulumsa and Meraro) in Arsi zone of Oromia region. In the second year (2018), only promising landraces (57) were evaluated both at seedling and adult plant growth stages. The seedling test was conducted in the greenhouse at Kulumsa research center using three (PstS2 (v32), (PstS11) and (PstS11 v25) Pst races. In field evaluations, terminal severity (TRS), coefficient of infection (CI), area under disease progress curve (AUDPC), disease progress rate (DPR) and head infection (HI) were considred. High disease pressure was noted with 100% severity on susceptible entries at both locations and seasons. Highly significant (P<0.001) differences were noted among the landraces for all disease parameters indicated above. Of the 152 landraces, 57(38%) exhibited lower or equal disease reaction compared to the resistant check(Enkoy) across locations. Overall, 18 accessions showed resistance to the prevailing Pst races both at seedling stage and field conditions whereas14 exhibited susceptible /intermediate reaction at seedling stage, but had lower disease reaction under field conditions. This study has identified potential sources of overall and adult plant resistance in the Ethiopian bread wheat landraces to the prevailing Pst races. The authors recommend further studies to determine the diversity and/or novelity of resistance genes in selected accessions. Future wheat improvement should focus on utilization of these genetic resources to minimize the re-current outbreak of rust diseases.
高产农民的面包小麦品种受到了由条锈病引起的条锈病(黄锈病)新变种的威胁。埃塞俄比亚高地的小麦(Pst)。在商品品种抗锈病能力下降的过程中,研究人员经常从近缘品种和地方品种中寻找新的来源。本研究的目的是确定从埃塞俄比亚生物多样性研究所(IBCE)获得的选定的埃塞俄比亚面包小麦地方品种的条锈病抗性。2017年,在奥罗米亚地区Arsi地区的热点地区(Kulumsa和Meraro),共有152只猪接触了流行的条锈病。在第二年(2018年),只有有前途的地方品种(57个)在幼苗和成虫生长阶段进行了评估。以3个(PstS2 (v32)、(PstS11)和(PstS11 v25) Pst品系在Kulumsa研究中心的温室中进行了育苗试验。现场评价主要考虑终末严重程度(TRS)、感染系数(CI)、疾病进展曲线下面积(AUDPC)、疾病进展率(DPR)和头部感染(HI)。在两个地点和季节,易感条目都注意到高疾病压力,严重程度为100%。上述所有疾病参数在地方品种之间的差异非常显著(P<0.001)。在152个地方品种中,57个(38%)与耐药检查(Enkoy)相比,表现出较低或相同的疾病反应。总体而言,18份材料在苗期和田间条件下均表现出抗性,14份材料在苗期表现出敏感/中间反应,但田间条件下病害反应较低。本研究已经确定了埃塞俄比亚面包小麦地方品种对流行的Pst品种的总体抗性和成体抗性的潜在来源。作者建议进一步研究确定抗性基因的多样性和/或新颖性。今后小麦改良应着重利用这些遗传资源,尽量减少锈病的再次发生。
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引用次数: 1
Measuring the Physico-Chemical Impact of Wastewater from the Open Sewer in an Industrial Area: Case of the Kossodo Industrial Area in the City of Ouagadougou in Burkina Faso 测量工业区露天下水道废水的物理化学影响:以布基纳法索瓦加杜古市科索多工业区为例
Pub Date : 2021-03-28 DOI: 10.5539/EP.V10N1P46
Bernard Gouba, Madjoyogo Hervé Sirima, B. Naon
Wastewater from industrial units in the Kossodo district in the city of Ouagadougou has a physicochemical impact on the environment and the population. For several years the Kossodo area was famous for the effects of wastewater from industrial units on the environment (a foul odor). We took samples from various points of the open canals in order to determine the physico-chemical parameters of this wastewater. This choice was guided by a concern to measure the physico-chemical impact of wastewater from the open sewer in the industrial zone of Kossodo in the city of Ouagadougou on the one hand and to show the danger represented by this wastewater from industrial units on the environment and public health on the other hand. The objective also guided the choice of the parameters retained for the measurement of the physicochemical impact of the industrial units wastewater of the open sewer of Kossodo zone in the city of Ouagadougou: MES, DCO, BOD5, pH, Potassium, Sodium. The results show that the wastewater from the open sewers of the industrial units of Kossodo in the city of Ouagadougou, has a high physicochemical parameter content than the authorized discharge standard.
瓦加杜古市科索多区工业单位的废水对环境和人口产生了物理化学影响。几年来,科索多地区因工业废水对环境的影响(恶臭)而闻名。为了确定废水的理化参数,我们从明渠的各个点取样。做出这一选择的原因是,一方面要测量瓦加杜古市科索多工业区露天下水道废水的物理化学影响,另一方面要显示工业单位的这种废水对环境和公共卫生的危害。该目标还指导了为测量瓦加杜古市Kossodo区露天下水道工业单元废水的物理化学影响而保留的参数的选择:MES、DCO、BOD5、pH、钾、钠。结果表明,瓦加杜古市科索多工业装置明渠排放的废水理化参数含量高于规定的排放标准。
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引用次数: 0
Uplift Quantification and Erosion Rate Estimation in Northwestern Tunisia from Topographic and Lithologic Data 基于地形和岩性资料的突尼西亚西北部隆升量化和侵蚀速率估算
Pub Date : 2021-03-26 DOI: 10.5539/EP.V10N1P15
H. Saadouni, R. Alouani
Digital elevation modeling (DEM) was used to determine key morphological features such as hypsometry, slopes and topographic evolution in correlation with tectonic regimes and erosion mechanisms. This contribution discusses the tectonic model of northern Tunisia, which since 1977 has been described by geologists as an allochthonous unity domain of the Serravallian-Tortonian. This study presents new data from the erosion rate calculation following the establishment of these units and then proposes another view on regional tectonics. Therefore, the example used of Oued Sedjnene gives a rising rate of the order of 0.01 mm/year, almost equivalent to the results found in surrounding medeterranean belt (ex. Italy and Turkey). The structure and geomorphology of northern Tunisia is a result of folding of Cenozoic basin. However located tangential structure are related to transcurrent faults and not overthrust structure
利用数字高程模型(DEM)确定了与构造制度和侵蚀机制相关的地形特征,如斜坡、坡度和地形演变。这篇文章讨论了突尼斯北部的构造模型,自1977年以来,该模型一直被地质学家描述为塞拉瓦里亚-托尔顿构造的异域统一域。本研究提出了这些单元建立后的侵蚀速率计算的新数据,并提出了区域构造的另一种观点。因此,Oued Sedjnene的例子给出了0.01毫米/年的上升速度,几乎与周围地中海带(如意大利和土耳其)的结果相当。突尼斯北部的构造和地貌是新生代盆地褶皱作用的结果。切向构造与逆冲构造无关,与逆冲构造无关
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引用次数: 0
Diagnosis of Lead Pollution of Surface Waters of a River: Case of the Djiri River in the Republic of Congo 河流地表水铅污染的诊断:以刚果共和国Djiri河为例
Pub Date : 2021-03-08 DOI: 10.5539/EP.V10N1P30
Roch Corneille Ngoubou, Jean Bienvenu Dinga, D. Nganga
This research work deals with the physico-chemical analysis of the surface water of the Djiri river with the aim of preventing the population against possible water pollution. The analysis of the samples collected in the Djiri river revealed the presence of lead in these waters at levels exceeding the WHO guideline values: an average annual pollution (0.93 mg / l) which is visibly above the WHO guideline value (0.01mg / l). The in situ data of the Djiri river revealed a significant drop in flow between the period 2016 characterized by a divergence index of 0.82344 thus highlighting a hydrological situation for which the actors of national hydrology will absolutely have to implement measures. Remedial mechanisms to protect this river against possible disappearance.
这项研究工作涉及Djiri河地表水的物理化学分析,目的是防止人口遭受可能的水污染。对在Djiri河中采集的样本进行的分析显示,这些水中的铅含量超过了世卫组织的指导值:年平均污染(0.93 mg / l),明显高于世界卫生组织指导值(0.01mg / l)。2016年期间,吉里河的原位数据显示流量显著下降,差异指数为0.82344,因此突出了国家水文行动者必须采取措施的水文状况。保护这条河免遭可能消失的补救机制。
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引用次数: 2
Could Behavioural Nudges Improve the Accuracy of Waste Sorting? An Experimental Survey 行为推动能提高垃圾分类的准确性吗?实验调查
Pub Date : 2021-01-06 DOI: 10.5539/ep.v10n1p1
D. I. J. Samaranayake, R. S. Thennakoon
The study consisted of a survey and field experiment to observe the impact of behavioural nudges on an individual’s attitudes and accuracy on waste sorting. The survey conducted on 203 students of the University of Peradeniya, and then the field experiment within the university premises. The responses to the survey revealed that the participants having a negative attitude toward the usual waste disposal and sorting practices. Also, the majority of the respondents preferred non-monetary incentives as an effective strategy to motivate individuals to improve the accuracy of waste sorting. Then the participants are given nine strategies as separate behavioural nudges to improve the waste sorting behavior. The responses are highly varied and the majority prefer to use a combination of different colours and detailed labels as a motivational strategy. Thus, the preferred strategy was examined at the faculty premises throughout three stages and tested three hypotheses. Findings revealed that the strategy improves the accuracy, and supports the university community for proper waste sorting practices. Further, it exposed that the detail labels and stickers are impactful than the color sensitivity of respondents.
该研究包括调查和实地实验,以观察行为推动对个人态度和垃圾分类准确性的影响。本研究以Peradeniya大学203名学生为调查对象,并在校内进行实地实验。调查的回应显示,参与者对通常的废物处理和分类做法持消极态度。此外,大多数受访者更喜欢非金钱奖励作为激励个人提高废物分类准确性的有效策略。然后给参与者九种策略,作为单独的行为推动,以改善垃圾分类行为。人们的反应各不相同,大多数人更喜欢使用不同颜色和详细标签的组合作为激励策略。因此,首选策略在三个阶段在教师场所进行了检查,并测试了三个假设。调查结果显示,该策略提高了准确性,并支持大学社区采取适当的废物分类做法。此外,它揭示了细节标签和贴纸比受访者的颜色敏感性的影响。
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引用次数: 3
Theorizing the Effect of Smog on Public Health in Lahore, Pakistan 巴基斯坦拉合尔烟雾对公众健康影响的理论化
Pub Date : 2020-09-28 DOI: 10.5539/EP.V9N2P14
A. Akbar
SMOG is a form of horrible air pollution that has recently been declared as a public health emergency in Southeast Asia. This article will talk about the drawback of smog pollution and its outcomes on human health. Smog has become the most important issue for Pakistan, from some past years. Since 2011, nearly all areas of Pakistan especially Lahore has been repeatedly affected by smog. In Many previous types of research, the focus is on Smog and, its source, alarm systems, and safeguard, when a risky Environmental event like smog, the conclusion may be riskier than the event itself will cause if people take irrational actions due to lack of relevant awareness. So, examine people's attitudes and a reaction to smog is theoretically and realistically meaningful. Recent projects of coal as a source of energy, high rates of outpouring from unmonitored industries, a large number of automobiles on roads, play a major role in trends of deforestation to construct new roads and recently the burning of crops leftovers has added fuel to the fire. Vehicles increase by 9% compared to the last five years due to a lack of public transport systems. Pakistan, India, and Bangladesh emit the most hydrocarbons in their fuel emissions compared to SAARC (South Asian Association for Regional Cooperation) countries. As a result of these problems, Pakistan is facing its relatives, losses and various dangerous human diseases.
雾霾是一种可怕的空气污染,最近被宣布为东南亚的突发公共卫生事件。本文将讨论雾霾污染的弊端及其对人体健康的影响。从过去几年开始,雾霾已经成为巴基斯坦最重要的问题。自2011年以来,巴基斯坦几乎所有地区,尤其是拉合尔,都多次受到雾霾的影响。在之前的许多类型的研究中,重点是雾霾及其来源,报警系统和保障措施,当雾霾这样的高风险环境事件发生时,如果人们由于缺乏相关意识而采取不合理的行动,结论可能比事件本身造成的风险更大。因此,考察人们对雾霾的态度和反应具有理论和现实意义。最近将煤炭作为能源的项目,不受监管的工业的高排放率,道路上的大量汽车,在砍伐森林以建设新道路的趋势中发挥了重要作用,最近焚烧农作物的剩余物更是火上浇油。由于缺乏公共交通系统,与过去五年相比,车辆增加了9%。与南亚区域合作联盟(SAARC)国家相比,巴基斯坦、印度和孟加拉国在其燃料排放中排放的碳氢化合物最多。由于这些问题,巴基斯坦面临着亲人、损失和各种危险的人类疾病。
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引用次数: 0
Adsorption Efficiency of Flamboyant Pods for Indigo Dye Removal from Textile Industrial Wastewater 艳丽豆荚对纺织工业废水中靛蓝染料的吸附效果研究
Pub Date : 2020-09-28 DOI: 10.5539/EP.V9N2P1
A. Okoya, Doyinsola Omotoyosi Diisu, O. O. Olaiya, O. S. Adegbaju
This study investigates flamboyant pods (FP) and chitosan [extracted from periwinkle shells (PS)] modified flamboyant pods (CMFP) adsorbents for dye removal from textile industrial wastewater, and were compared with commercial activated carbon (CAC). Physicochemical properties with dye concentrations of wastewater were investigated before and after adsorption using standard methods and Ultraviolet-visible Spectrophotometer respectively. Batch adsorption were performed and pH (3.0, 4.0, 6.0, 9.0, 11.5), adsorbent dosage (0.1, 0.2, 0.3, 0.4, 0.5 g), contact time (10, 20, 30, 40, 50, 60 minutes) and initial concentration (25, 50, 100, 125, 250 mg/L) were optimized for Indigo dye using the adsorbents. Initial concentration data was used to test conformity with Langmuir and Freundlich adsorption isotherms. Adsorption efficiencies for simulation ranged from 11.33±0.70 to 83.8±0.00. Optimum adsorption conditions of indigo dye were pH 6, 0.1g sorbent dosage, 60 minutes contact time and 250 mg/L dye concentration; gave efficiencies of 83.8%, 79.6% and 89.8% for FP, CMFP, CAC respectively with wastewater. Physicochemical parameters of wastewater decreased except nitrate which increased from 11.53±0.00 to 34.65±1.41mg/L. Data best fit Langmuir than Freundlich adsorption isotherm. The study inferred that FP and PS could be processed as less expensive, environment friendly alternative adsorbent to the costly CAC for treating textile wastewater.
研究了花荚(FP)和壳聚糖(从长春花壳(PS)中提取)改性花荚(CMFP)吸附剂对纺织工业废水中染料的去除效果,并与商用活性炭(CAC)进行了比较。采用标准法和紫外可见分光光度计分别考察了吸附前后废水的理化性质与染料浓度的关系。对靛蓝染料进行了批量吸附,优化了吸附剂对靛蓝染料的pH(3.0、4.0、6.0、9.0、11.5)、吸附剂用量(0.1、0.2、0.3、0.4、0.5 g)、接触时间(10、20、30、40、50、60分钟)和初始浓度(25、50、100、125、250 mg/L)。初始浓度数据用Langmuir和Freundlich吸附等温线进行验证。模拟吸附效率范围为11.33±0.70 ~ 83.8±0.00。靛蓝染料的最佳吸附条件为pH 6、吸附剂用量0.1g、接触时间60 min、染料浓度250 mg/L;FP、CMFP、CAC对废水的处理效率分别为83.8%、79.6%和89.8%。除硝态氮由11.53±0.00 mg/L上升至34.65±1.41mg/L外,其余理化参数均有所下降。Langmuir吸附等温线比Freundlich吸附等温线最适合。研究表明,FP和PS可作为廉价、环保的吸附剂替代昂贵的CAC处理纺织废水。
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引用次数: 2
Global Environmental Pollution and Coronavirus 全球环境污染与冠状病毒
Pub Date : 2020-09-28 DOI: 10.5539/EP.V9N2P19
M. Quader
Discussions, analyses and modelling are based on global level data The natural environment is causing deaths to its habitants The ongoing coronavirus is also doing damage to the lives of the glove Worldwide people are too much worried putting extra ordinary efforts to contain the coronavirus pandemic But the damage being done to the lives of the people on the glove by natural environment problems is substantially higher than that done by the coronavirus Air pollution death rate is 6 02 times of death rate due to coronavirus and the total environmental death rate is 10 85 times that of coronavirus death rate Three statistical models regarding coronavirus development, coronavirus spread and coronavirus fatality are developed
讨论,分析和建模是基于全球层面数据的自然环境是造成其居民的死亡的冠状病毒也做损害手套全世界人们的生活太多担心把额外的普通努力抑制做冠状病毒大流行,但损害到手套上的人的生活自然环境问题是由冠状病毒大大高于空气污染死亡率是6 02年死亡率建立了冠状病毒发病、传播和病死率的3个统计模型
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引用次数: 0
Assessment of Nine Micronutrients in Jasmine 85 Rice Grown in Ghana Using Neutron Activation Analysis 用中子活化分析法评价加纳茉莉花85稻中9种微量营养素
Pub Date : 2020-09-28 DOI: 10.5539/EP.V9N2P29
M. K. Vowotor, G. Amoako, B. Sefa-Ntiri, S. Amoah, S. S. Sackey, C. Amuah
The amount of micronutrients in food is a key factor that determines the health status of a person. The concentrations of nine micronutrients, Sodium (Na), Magnesium (Mg), Chlorine (Cl), Potassium (K), Calcium (Ca), Vanadium (V), Manganese (Mn), Copper (Cu) and Iodine (I), in polished Jasmine 85 rice, locally cultivated in five rice farming areas in Ghana (Afienya, Afife, Dawhenya, Ashaiman and Aveyime), were determined using Neutron Activation Analysis. The standard materials used as reference were the International Atomic Energy Agency (IAEA)-530 Tuna fish homogenate and the National Institute of Standard and Technology (NIST) USA 1566b Oyster Tissue. Recoveries of the elemental concentrations ranged from 88% to 111% of the certified values. Relative standardization method was used in the quantification of the elements. The range of concentrations measured in the rice are: 142.3-188.1 mg/kg for Na, 483.2-875.7 mg/kg for Mg, 465.6-718.0 mg/kg for Cl, 514.62949.0 mg/kg for K, 2303.0-2622.0 mg/kg for Ca, 0.0698-0.1925 mg/kg for V, 9.956-14.460 mg/kg for Mn, 0.8728-1.6790 mg/kg for Cu and 0.1181-0.1447 mg/kg for I. Using Hierarchical clustering analysis and Principal Component Analysis to evaluate the intensities of measured concentrations, K was established to be the most abundant, and was used to categorize two distinct clusters; Group 1 farms (Ashaiman, Afienya, and Dawhenya) and Group 2 farms (Aveyime and Afife). Group 2 farms recorded elevated intensities of micronutrients. With Pearson's correlation coefficient, some noteworthy correlations realized were between Na and K (r = 0.951), Na and V (r = 0.842) and K and V (r = 0.812). This indicated the same or similar source inputs for each pair. The calculated mean daily intake of K exceeded the mean Recommended Dietary Allowable and Adequate Intake for all Life Stage Groups. Estimated health risk associated with the consumption of rice was only present for children between the ages of 1 and 3 for Mg. The information on these nine micronutrients content of the rice from these five farming areas would be valuable in rice consumption studies to evaluate the overall availability of micronutrients to the Ghanaian populace and age groups and also in nutrition planning for analysis of nationwide rice supplies, mainly for regions and countries known to be susceptible to deficiencies of these micronutrients. The techniques espoused in this research can be used to accurately determine the concentration of micronutrients in rice and also trace the area where the rice was produced.
食物中微量营养素的含量是决定一个人健康状况的关键因素。采用中子活化分析法测定了加纳5个水稻产区(Afienya、Afife、Dawhenya、Ashaiman和Aveyime)当地种植的茉莉花85抛光大米中钠(Na)、镁(Mg)、氯(Cl)、钾(K)、钙(Ca)、钒(V)、锰(Mn)、铜(Cu)和碘(I) 9种微量元素的浓度。作为参考的标准材料是国际原子能机构(IAEA)-530金枪鱼匀浆和美国国家标准与技术研究所(NIST) 1566b牡蛎组织。元素浓度的回收率为认证值的88% ~ 111%。定量方法采用相对标准化方法。在大米中测量的浓度范围如下:Na含量为142.3 ~ 188.1 mg/kg, mg含量为483.2 ~ 875.7 mg/kg, Cl含量为465.6 ~ 718.0 mg/kg, K含量为514.62949.0 mg/kg, Ca含量为2303.0 ~ 2622.0 mg/kg, V含量为0.0698 ~ 0.1925 mg/kg, Mn含量为9.956 ~ 14.460 mg/kg, Cu含量为0.8728 ~ 1.6790 mg/kg, i含量为0.1181 ~ 0.1447 mg/kg。第一组农场(Ashaiman、Afienya和Dawhenya)和第二组农场(aveytime和Afife)。第二组农场微量营养素含量升高。通过Pearson相关系数分析,Na与K (r = 0.951)、Na与V (r = 0.842)、K与V (r = 0.812)之间存在显著相关性。这表明每一对的源输入相同或相似。计算出的K的平均每日摄入量超过了所有生命阶段组的平均推荐膳食允许摄入量和充足摄入量。据估计,与食用大米有关的健康风险仅存在于1至3岁的儿童中。来自这五个农业地区的大米中这九种微量营养素含量的信息对于大米消费研究非常有价值,可以评估加纳民众和年龄组的总体微量营养素供应情况,也可以用于分析全国大米供应的营养规划,主要针对已知容易缺乏这些微量营养素的地区和国家。这项研究采用的技术可用于准确测定大米中微量营养素的浓度,并追踪大米的产地。
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引用次数: 0
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Environment and Pollution
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