Environmental impacts

环境影响
  • 文章类型: Journal Article
    参与具有个人和社区意义的日常生活活动是健康和福祉的重要组成部分。尽管有越来越多的报道称创伤后应激障碍(PTSD)患者在日常生活功能的各个方面面临挑战,迄今为止,对他们全面的参与模式进行的研究很少。该研究旨在描述与健康对照相比的PTSD的客观和主观参与维度,并调查个人和环境因素与参与之间的关联。
    61个人被纳入两组:PTSD(N=31;年龄:M=34.3;女性:77.4%)和年龄和性别相匹配的健康对照。PTSD组完成了症状严重程度的标准评估,一般认知,执行功能(EF),感官加工,自我效能感,功能能力,和环境属性。两组均完成了参与问卷。
    患有创伤后应激障碍的个体以低强度和多样性参与,更多的职业被放弃(-4.73该研究表明,在参与PTSD方面存在深刻的限制,引起了严重的关注。客观参与维度之间存在独特的关联模式,主观认知指标,感官调制,和环境因素,建议需要针对PTSD特征的干预方法,以促进PTSD患者的参与,以此作为促进健康和福祉的手段。
    UNASSIGNED: Participation in daily life activities with both the personal and community meaning is an important component of health and well-being. Even though there are mounting reports on the challenges in various aspects of daily-life functioning among individuals with post-traumatic stress disorder (PTSD), to date little research has been conducted on their comprehensive patterns of participation. The study aimed to describe objective and subjective participation dimensions in PTSD compared to healthy controls and investigate the association between personal and environmental factors and participation.
    UNASSIGNED: Sixty-one individuals were enrolled in two groups: PTSD (N=31; age: M=34.3; women:77.4%) and healthy controls matched by age and gender. The PTSD group completed standard assessments for symptom severity, general cognition, executive function (EF), sensory processing, self-efficacy, functional capacity, and environmental properties. Both groups completed a participation questionnaire.
    UNASSIGNED: Individuals with PTSD participated with low intensity and diversity, more occupations were abandoned (-4.73UNASSIGNED: The study demonstrates profound restrictions in participation in PTSD raising serious concerns. There are unique patterns of association between objective participation dimensions, subjective cognitive indices, sensory modulation, and environmental factors, suggesting a need for PTSD feature-specific intervention approaches to advance the participation of those with PTSD as a means of promoting health and well-being.
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  • 文章类型: Letter
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  • 文章类型: Journal Article
    本文介绍并描述了用大量木材(MT)建造的建筑物的材料清单数据集,结构钢(SS),和钢筋混凝土(RC),使用Athena的建筑物影响估计器(IE4B)软件生成,以进行整个建筑物生命周期评估(WBLCA)。这些数据与研究文章质量木材的环境影响评估有关,结构钢,和钢筋混凝土建筑基于2021年国际建筑规范规定[1]。该数据集用于估计其环境影响,但可用于估计使用MT建造的建筑物的成本,SS,和RC建筑材料。这些数据可以使用相同的布局复制,系统边界,参考研究期(RSP),和在已发布的作品[1]中使用的构建装配信息。该数据集与每层有11个公寓单元的建筑物的概念设计有关。然而,详细的设计,包括分析内部建筑饰面,如单位内的内部分区,厨房和洗手间固定装置,内部门,地板,等等,可以开发和分析,以获得更全面的生命周期评估估计。该数据集最初是为了比较三种常见框架类型的结构材料选择对环境的影响而开发的。
    This article presents and describes a dataset for the bills of materials for the buildings constructed with mass timber (MT), structural steel (SS), and reinforced concrete (RC), which are generated using Athena\'s Impact Estimator for Buildings (IE4B) software to conduct a whole building life-cycle assessment (WBLCA). These data are associated with the research article Environmental Impact Assessment of Mass Timber, Structural Steel, and Reinforced Concrete Buildings Based on the 2021 International Building Code Provisions [1]. This dataset was utilized to estimate their environmental impacts but can be used to estimate the costs of buildings constructed with MT, SS, and RC building materials. These data could be replicated using the same layout, system boundaries, reference study period (RSP), and building assemblies\' information as used in the published work [1]. This dataset is related to conceptual design of a building with 11 apartment units per floor. However, a detailed design that includes the analysis of interior architectural finishes such as internal partitions within the units, kitchen and washroom fixtures, internal doors, flooring, and so on, could be developed and analyzed to obtain a more comprehensive estimates of life cycle assessment. This dataset was originally developed to compare the environmental impacts of structural materials selection for three common framing typologies.
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  • 文章类型: Journal Article
    废旧磷酸铁锂电池的回收利用最近成为焦点话题。因此,评估不同的废铁磷酸锂回收过程成为工业发展的必要。这里,基于环境的多种视角,经济和技术,对四种典型的废旧磷酸铁锂回收工艺(Hydro-A:湿法冶金总浸出回收工艺;Hydro-B(H2O2/O2):湿法冶金选择性提锂工艺;Pyro:火法冶金回收工艺;直接:直接再生工艺)进行了综合比较。综合评价研究利用环境,经济和技术作为评价指标,并采用熵权法和层次分析法对综合指标权重进行耦合。结果表明,Hydro-A的综合评价值,Hydro-B(H2O2),Hydro-B(O2),Pyro和Direct分别为0.347、0.421、0.442、0.099和0.857。因此,应进一步提高Direct的技术成熟度,以实现早期工业化。在此基础上,本研究综合考虑环境,对废旧磷酸铁锂回收工艺进行了定量评价,经济和技术因素,为制定回收工艺提供进一步的指导。
    The recycling of spent lithium iron phosphate batteries has recently become a focus topic. Consequently, evaluating different spent lithium iron phosphate recycling processes becomes necessary for industrial development. Here, based on multiple perspectives of environment, economy and technology, four typical spent lithium iron phosphate recovery processes (Hydro-A: hydrometallurgical total leaching recovery process; Hydro-B(H2O2/O2): hydrometallurgical selective lithium extraction process; Pyro: Pyrometallurgical recovery process; Direct: Direct regeneration process) were compared comprehensively. The comprehensive evaluation study uses environment, economy and technology as evaluation indicators, and uses the entropy weight method and analytic hierarchy process to couple the comprehensive indicator weights. Results show that the comprehensive evaluation values of Hydro-A, Hydro-B (H2O2), Hydro-B (O2), Pyro and Direct are 0.347, 0.421, 0.442, 0.099 and 0.857, respectively. Therefore, the technological maturity of Direct should be further improved to enable early industrialization. On this basis, this study conducted a quantitative evaluation of the spent lithium iron phosphate recycling process by comprehensively considering environmental, economic and technical factors, providing further guidance for the formulation of recycling processes.
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  • 文章类型: Journal Article
    对研究环境影响的担忧已经在研究领域得到了阐述,但是问题仍然存在,关于什么样的角色责任适合研究人员,如果有的话。本文的研究问题是:使用数据密集型方法的英国卫生研究人员对他们的责任考虑其研究的环境影响有什么看法?使用数据密集型方法对英国卫生研究人员进行了26次访谈。与会者表示希望对他们的研究对环境的影响负责,然而,他们无法巩固这一点,因为经常有障碍阻止他们承担这样的职责。他们提出了解决这个问题的策略,主要与监管监控自己行为的需要有关。本文讨论了采用这种监管方法作为使用新自由主义批判促进研究人员角色责任的机制的含义。
    Concerns about research\'s environmental impacts have been articulated in the research arena, but questions remain about what types of role responsibilities are appropriate to place on researchers, if any. The research question of this paper is: what are the views of UK health researchers who use data-intensive methods on their responsibilities to consider the environmental impacts of their research? Twenty-six interviews were conducted with UK health researchers using data-intensive methods. Participants expressed a desire to take responsibility for the environmental impacts of their research, however, they were unable to consolidate this because there were often obstacles that prevented them from taking such role responsibilities. They suggested strategies to address this, predominantly related to the need for regulation to monitor their own behaviour. This paper discusses the implications of adopting such a regulatory approach as a mechanism to promote researchers\' role responsibilities using a neo-liberal critique.
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  • 文章类型: Journal Article
    合成泡沫作为绝缘材料的重要性源于它们的机械和耐水性以及它们的成本效益。广义上,建筑围护结构的设计还应考虑耐火和抗霉性以及对环境的影响(寿命终止和可堆肥性)。本研究解决了这些问题,考虑到对可持续能源的需求不断增加,以开发高度多孔的绝缘材料。我们介绍了一种基于纤维素纤维的湿泡沫铺设的通用策略,该策略导致分层结构,其性能由桦木醇(BT)的表面掺入而定制。从树皮中提取的生物活性分子,在安装氨基甲酸酯键之后与聚(二甲基硅氧烷)(PDMS)结合。因此,我们介绍了一种环保的替代传统聚氨酯泡沫具有竞争力的机械和保温性能。在低BT负载下纤维泡沫的改性同时赋予超疏水性(水接触角>150°),阻燃性(在10s内自动熄灭),微生物抗性,和耐久性(3个月后在土壤条件下没有退化)。BT作为与PDMS协同实现耐火性的抗微生物剂和疏水剂起关键作用。BT改性泡沫的生命周期评估表明,与硬质聚氨酯泡沫相比,温室气体排放和人体毒性显着减少了96%和92%,分别。总的来说,通过考虑旨在替代石油衍生的固体泡沫的可扩展性和成本效益,证明了树皮衍生的BT的价值。
    The significance of synthetic foams as insulative materials stems from their mechanical and water resistance as well as their cost-effectiveness. Broadly, the design of building envelopes should also consider fire and mold resistance and the impacts on the environment (end of life and compostability). This study addresses these issues considering the ever-increasing demand for sustainable sources to develop highly porous insulative materials. We introduce a versatile strategy based on wet-foam laying of cellulosic fibers that leads to hierarchical structures whose performance is tailored by the surface incorporation of betulin (BT), a bioactive molecule extracted from tree bark, combined with poly(dimethylsiloxane) (PDMS) after installation of urethane linkages. As such, we introduce an eco-friendly alternative to traditional polyurethane foams with competitive mechanical and thermal insulation performance. The modification of the fiber foams at low BT loading simultaneously endows superhydrophobicity (water contact angle >150°), fire retardancy (self-extinguish within 10 s), microbial resistance, and durability (no degradation in soil conditions after 3 months). BT plays a critical role as an antimicrobial and hydrophobic agent that synergizes with PDMS to achieve fire resistance. The life cycle assessment of the BT-modified foams reveals a significant reduction in greenhouse gas emission and human toxicity compared with rigid polyurethane foams by 96 and 92%, respectively. Overall, the valorization of the bark-derived BT is demonstrated by considering the scalability and cost-effectiveness of solid foams designed to substitute petroleum-derived counterparts.
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  • 文章类型: Journal Article
    锰是广泛用于各个领域的不可缺少的金属。中国是第四大锰矿生产国和最大的电解锰金属(EMM)生产国。然而,EMM生产与高能耗和污染有关。本研究对中国锰三角地区的EMM生产进行了生命周期评估(LCA),以全面评估其对环境的影响。结果表明,人类致癌毒性,主要来自发电(65.3%)和采矿活动(24.4%),是最显著的环境影响。铬(VI)被确定为主要有害物质,对人类致癌毒性的贡献高达91%。终点结果估计,1tEMM的产生导致1.01E-02DALY对人类健康的危害,1.97E-05种。对生态系统的危害,和227.15美元的资源消耗。仿真场景表明,用水电代替火电可以减少90%以上的环境污染。最后,根据调查结果,提出了促进EMM清洁生产的技术措施。
    Manganese is an indispensable metal widely used in various fields. China ranks as the fourth-largest producer of manganese ore and the largest producer of electrolytic manganese metal (EMM). However, EMM production is linked to high energy consumption and pollution. This study conducts a life cycle assessment (LCA) of EMM production in the Manganese Triangle region of China to comprehensively evaluate its environmental impact. Results show that Human carcinogenic toxicity, mainly from electricity generation (65.3 %) and mining activities (24.4 %), is the most significant environmental impact. Chromium (VI) is identified as the predominant hazardous substance, contributing up to 91 % to Human carcinogenic toxicity. Endpoint results estimate that the production of 1 t of EMM results in 1.01E-02 DALY of harm to human health, 1.97E-05 species.yr of harm to the ecosystem, and $227.15 worth of resource depletion. Simulation scenarios demonstrate that replacing thermal power with hydropower can reduce environmental pollution by over 90 %. Finally, based on the findings, technical measures for promoting clean production of EMM were proposed.
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  • 文章类型: Journal Article
    了解食物浪费的现状是有效干预的基础。根据133天的实地研究,2022年3月至8月,2022年11月为25天,共计158天,这项研究获得了有关不同地区和城市级别的样本餐馆的十大类103种食品的浪费和消费的第一手数据,在中国有不同的经营规模。共有7759名消费者参与了这项研究,其中10%是儿童。作为这项研究的一部分,将运送到总共2538张桌子的食物计数。在这项研究中,每张桌子的平均人数是3人。研究目标是测量数量,composition,以及食品服务业消费后废物对国家一级的环境影响。发现:(1)中国后消费者产生的食物垃圾总计7.57公吨,或2022年人均每餐43.98克。(2)水果是最重要的废物类型,为1.51Mt。(3)根和块茎的食物浪费率最高(53%)。(4)每年的食物浪费导致了30.67MtCO2-eq的碳足迹,氮足迹为39394万公斤(MkgN),磷足迹为53.87MkgP,1709万公升的水足迹,土地面积为436万公顷(Mha)。
    Understanding the current state of food waste is the basis for effective interventions. Based on field research conducted for 133 days, from March to August 2022, and for 25 days in November 2022, totaling 158 days, this study obtained first-hand data on the waste and consumption of 103 food items in ten categories at sample restaurants in different regions and city levels, and of different operation sizes in China. A total of 7759 consumers were part of this study, of whom 10 % them were children. The food delivered to a total of 2538 tables was counted as part of this study, and the average number of people per table in this study was three. The research objective was to measure the quantity, composition, and environmental impacts of post-consumer waste in the food service industry at the national level. It was discovered that: (1) Food waste generated by post-consumers in China totaled 7.57 Mt, or 43.98 g per capita per meal in 2022. (2) Fruit was the most important type of waste at 1.51 Mt. (3) Roots and tubers had the highest food waste rate (53 %). (4) The annual food waste resulted in a carbon footprint of 30.67 Mt CO2-eq, a nitrogen footprint of 393.94 million kilograms (Mkg N), a phosphorus footprint of 53.87 Mkg P, a water footprint of 17.09 million litres, and a land footprint of 4.36 million hectares (Mha).
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  • 文章类型: Journal Article
    配制猪饮食的传统方法仅基于在满足营养需求的同时最小化成本,因此不考虑与生产饲料成分相关的环境影响。为减少猪肉生产对环境的整体影响,饲料原料可以被认为是制定环境友好的饮食。然而,它们对养猪生产性能的潜在影响可能会降低农场门口的环境效益。这项研究的目的是量化这种生态友好型猪饮食对氮(N)和能量(E)平衡的影响,产热(HP)的组成部分和生长猪的性能。干物质消化率系数(84.5%vs88.2%,P<0.01)和N(80.4%vs86.3%,P<0.01)明显低于对照饮食(法国使用的商业饮食)。饲喂生态友好型饮食的猪组的粪便中的N排泄显着高于饲喂对照饮食的组(9.8vs6.9g/d,分别,P=0.01),而N保留率往往较低(27.8比30.3g/d,分别为;P=0.06)。可代谢的E:可消化的E比例在饮食之间没有差异,但是生态友好饮食组的总HP显着低于对照饮食组(1340vs1388kJ/kg体重(BW)0.60/d,分别,P=0.03)。使用对环境影响较小的饲料原料,例如本地生产的蛋白质或小麦加工的副产品,是减少养猪生产对环境影响的有效途径。然而,这些环保成分的营养成分可能被高估了,特别是氨基酸的真正消化率。这表明需要更好地估计和考虑生态友好型饮食的真正消化率,以减少畜牧业生产对环境的影响,而不降低动物生产性能。
    The traditional approach to formulating pig diets is based only on minimizing cost while meeting nutritional requirements and thus does not consider the environmental impacts associated with producing feed ingredients. To reduce the overall environmental impact of pork production, that of feed ingredients can be considered to formulate environmentally friendly diets. However, their potential effects on pig performance could decrease environmental benefits at the farm gate. The objective of this study was to quantify the effects of such eco-friendly pig diets on nitrogen (N) and energy (E) balances, the components of heat production (HP) and the performance of growing pigs. Digestibility coefficients of dry matter (84.5% vs 88.2%, P < 0.01) and N (80.4% vs 86.3%, P < 0.01) were significantly lower for the eco-friendly diet than the Control-diet (a commercial diet used in France). N excretion in feces was significantly higher for the group of pigs fed the eco-friendly diet than for the group fed the Control-diet (9.8 vs 6.9 g/d, respectively, P = 0.01), while the N retention tended to be lower (27.8 vs 30.3 g/d, respectively; P = 0.06). The metabolizable E:digestible E ratio did not differ between diets, but total HP was significantly lower for the eco-friendly diet group than for the Control-diet group (1340 vs 1388 kJ/kg body weight (BW)0.60/d, respectively, P = 0.03). Using feed ingredients with lower environmental impacts, such as locally produced protein or co-products from wheat processing, is an effective way to decrease environmental impacts of pig production. However, the nutritional composition of these eco-friendly ingredients could be overestimated, in particular the true digestibility of amino acids. This indicates the need to better estimate and consider the true digestibility of eco-friendly diets to decrease environmental impacts of livestock production without decreasing animal performance.
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  • 文章类型: Journal Article
    本文研究了基于淀粉和聚(己二酸丁二醇酯-共对苯二甲酸酯)(PBAT)的黑色可生物降解地膜(MF)在农业土壤中的命运。将原始(BIO-0)和紫外线老化的薄膜样品(BIO-A192)在意大利南部的一个实验场中掩埋了16个月。视觉,物理,化学,形态学,在样品掩埋之前和之后进行了机械分析。在试验结束时分析了土壤中大型和微型塑料形式的薄膜残留物。原始和紫外线老化样品的逐渐劣化,随着表面损失和机械性能的变化,发生在42天的葬礼上。478天后,BIO-0和BIO-A192薄膜的表观表面积分别下降了57%和66%,分别。埋葬确定了聚合物混合物中淀粉的快速消耗,特别是对于BIO-A192,而聚酯相的降解较慢。埋葬时,观察到膜残基中PBAT的芳香族部分的富集,以及微塑料释放到土壤中。对从土壤中提取的MF降解产物(在土壤样品中占质量的0.006-0.008%)的分析表明,主要存在己二酸部分。经过478天的埋葬,分别约为BIO-0和BIO-A192初始量的23%和17%,是从土壤中提取的。这项全面的研究强调了涉及该领域新一代地膜的生物降解现象的复杂性。聚合物组分的不同生物降解性,气候,以及未严格满足针对MFs设计的标准测试方法所需参数的土壤条件,显著影响了它们的降解率。这一发现进一步强调了实施田间试验以准确评估可生物降解的MFs对土壤健康和整体农业生态系统可持续性的实际影响的重要性。
    The fate of black biodegradable mulch film (MF) based on starch and poly(butylene-adipate-co-terephthalate) (PBAT) in agricultural soil is investigated herein. Pristine (BIO-0) and UV-aged film samples (BIO-A192) were buried for 16 months at an experimental field in southern Italy. Visual, physical, chemical, morphological, and mechanical analyses were carried out before and after samples burial. Film residues in the form of macro- and microplastics in soil were analyzed at the end of the trial. Progressive deterioration of both pristine and UV-aged samples, with surface loss and alterations in mechanical properties, occurred from 42 days of burial. After 478 days, the apparent surface of BIO-0 and BIO-A192 films decreased by 57 % and 66 %, respectively. Burial determined a rapid depletion of starch from the polymeric blend, especially for the BIO-A192, while the degradation of the polyester phase was slower. Upon burial, an enrichment of aromatic moieties of PBAT in the film residues was observed, as well as microplastics release to soil. The analysis of the MF degradation products extracted from soil (0.006-0.008 % by mass in the soil samples) revealed the predominant presence of adipate moieties. After 478 days of burial, about 23 % and 17 % of the initial amount of BIO-0 and BIO-A192, respectively, were extracted from the soil. This comprehensive study underscores the complexity of biodegradation phenomena that involve the new generation of mulch films in the field. The different biodegradability of the polymeric components, the climate, and the soil conditions that did not strictly meet the parameters required for the standard test method devised for MFs, have significantly influenced their degradation rate. This finding further emphasizes the importance of implementing field experiments to accurately assess the real effects of biodegradable MFs on soil health and overall agroecosystem sustainability.
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